/* roulang page: index */
:root {
            --color-primary: #0D1B2A;
            --color-primary-light: #152238;
            --color-accent: #00A896;
            --color-accent-dark: #008B7A;
            --color-accent-light: #00B4A6;
            --color-emphasis: #FFB703;
            --color-emphasis-glow: rgba(255, 183, 3, 0.55);
            --color-text: #E0E6ED;
            --color-text-secondary: #8A9BB5;
            --color-text-dark: #1A2B3C;
            --color-bg-light: #F4F6F9;
            --color-card-bg: #FFFFFF;
            --color-border: rgba(0, 0, 0, 0.06);
            --color-border-light: #E2E8F0;
            --color-glass-bg: rgba(13, 27, 42, 0.75);
            --color-glass-border: rgba(255, 255, 255, 0.08);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);
            --shadow-glow: 0 0 20px rgba(0, 168, 150, 0.35);
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --font-mono: 'SF Mono', 'Consolas', 'Monaco', monospace;
            --max-width: 1200px;
            --nav-height: 68px;
            --transition-fast: 0.2s ease;
            --transition-normal: 0.3s ease;
            --transition-slow: 0.5s ease;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-sans);
            line-height: 1.7;
            color: var(--color-text-dark);
            background: #FAFBFC;
            min-height: 100vh;
            overflow-x: hidden;
            letter-spacing: 0.01em;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            color: var(--color-accent);
            text-decoration: none;
            transition: color var(--transition-fast), text-decoration var(--transition-fast);
        }

        a:hover {
            color: var(--color-accent-dark);
            text-decoration: underline;
        }

        a:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 3px;
            border-radius: 4px;
        }

        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            background: none;
            transition: all var(--transition-fast);
        }

        button:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 3px;
            border-radius: 4px;
        }

        input {
            font-family: inherit;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
        }

        input:focus-visible {
            outline: none;
            border-color: var(--color-accent);
            box-shadow: 0 0 0 3px rgba(0, 168, 150, 0.2);
        }

        ul,
        ol {
            list-style: none;
        }

        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }

        /* ========== HEADER / NAVIGATION ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--nav-height);
            background: var(--color-glass-bg);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--color-glass-border);
            transition: background var(--transition-normal), backdrop-filter var(--transition-normal), box-shadow var(--transition-normal);
        }

        .site-header.glass--solid {
            background: var(--color-primary);
            backdrop-filter: none;
            -webkit-backdrop-filter: none;
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.25);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }

        .header-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 700;
            color: #FFFFFF;
            letter-spacing: 0.03em;
            white-space: nowrap;
            text-decoration: none;
            flex-shrink: 0;
        }
        .header-logo:hover {
            color: #FFFFFF;
            text-decoration: none;
            opacity: 0.9;
        }
        .header-logo .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--color-accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            color: #fff;
            flex-shrink: 0;
        }

        .header-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            flex-wrap: nowrap;
        }
        .header-nav a {
            display: inline-flex;
            align-items: center;
            padding: 8px 14px;
            border-radius: 6px;
            color: rgba(255, 255, 255, 0.85);
            font-size: 0.9rem;
            font-weight: 500;
            white-space: nowrap;
            transition: all var(--transition-fast);
            text-decoration: none;
            letter-spacing: 0.02em;
        }
        .header-nav a:hover {
            color: #FFFFFF;
            background: rgba(255, 255, 255, 0.08);
            text-decoration: none;
        }
        .header-nav a.active {
            color: #FFFFFF;
            background: rgba(0, 168, 150, 0.25);
            font-weight: 600;
        }
        .header-nav .nav-cta {
            background: var(--color-accent);
            color: #fff;
            padding: 9px 18px;
            border-radius: 8px;
            font-weight: 600;
            margin-left: 6px;
            letter-spacing: 0.03em;
        }
        .header-nav .nav-cta:hover {
            background: var(--color-accent-dark);
            color: #fff;
            text-decoration: none;
            box-shadow: var(--shadow-glow);
        }

        .header-search {
            position: relative;
            margin-left: 4px;
        }
        .header-search .search-toggle {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            color: rgba(255, 255, 255, 0.85);
            font-size: 1.1rem;
            transition: all var(--transition-fast);
            background: transparent;
        }
        .header-search .search-toggle:hover {
            color: #FFFFFF;
            background: rgba(255, 255, 255, 0.1);
        }
        .header-search .search-dropdown {
            position: absolute;
            right: 0;
            top: 100%;
            margin-top: 8px;
            background: rgba(13, 27, 42, 0.95);
            backdrop-filter: blur(16px);
            border-radius: 12px;
            padding: 10px;
            display: none;
            width: 260px;
            border: 1px solid rgba(255, 255, 255, 0.12);
            box-shadow: var(--shadow-lg);
        }
        .header-search .search-dropdown.active {
            display: block;
        }
        .header-search .search-dropdown input {
            width: 100%;
            padding: 10px 14px;
            border-radius: 8px;
            border: 1px solid rgba(255, 255, 255, 0.2);
            background: rgba(255, 255, 255, 0.08);
            color: #fff;
            font-size: 0.9rem;
        }
        .header-search .search-dropdown input::placeholder {
            color: rgba(255, 255, 255, 0.5);
        }

        .mobile-menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            cursor: pointer;
            background: transparent;
            border: none;
            z-index: 1001;
        }
        .mobile-menu-toggle span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: #fff;
            border-radius: 2px;
            transition: all var(--transition-fast);
        }
        .mobile-menu-toggle.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .mobile-menu-toggle.active span:nth-child(2) {
            opacity: 0;
        }
        .mobile-menu-toggle.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        .mobile-nav-panel {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(13, 27, 42, 0.96);
            backdrop-filter: blur(16px);
            z-index: 999;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 16px;
            padding: 40px;
        }
        .mobile-nav-panel.active {
            display: flex;
        }
        .mobile-nav-panel a {
            color: rgba(255, 255, 255, 0.9);
            font-size: 1.2rem;
            font-weight: 500;
            padding: 12px 24px;
            border-radius: 8px;
            transition: all var(--transition-fast);
            text-decoration: none;
        }
        .mobile-nav-panel a:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.08);
        }
        .mobile-nav-panel .nav-cta-mobile {
            background: var(--color-accent);
            color: #fff;
            font-weight: 600;
            padding: 14px 28px;
            border-radius: 10px;
            margin-top: 8px;
        }

        /* ========== HERO SECTION ========== */
        .hero-section {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            background: var(--color-primary);
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            overflow: hidden;
            padding-top: var(--nav-height);
        }
        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(13, 27, 42, 0.82) 0%, rgba(13, 27, 42, 0.5) 60%, rgba(13, 27, 42, 0.78) 100%);
            z-index: 1;
        }
        .hero-section .hero-bg-particles {
            position: absolute;
            inset: 0;
            z-index: 0;
            opacity: 0.35;
            background: radial-gradient(ellipse at 30% 50%, rgba(0, 168, 150, 0.2) 0%, transparent 55%),
                radial-gradient(ellipse at 70% 30%, rgba(255, 183, 3, 0.15) 0%, transparent 50%),
                radial-gradient(ellipse at 50% 80%, rgba(0, 168, 150, 0.1) 0%, transparent 45%);
        }
        .hero-content {
            position: relative;
            z-index: 2;
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 60px 20px 80px;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }
        .hero-text {
            color: #fff;
        }
        .hero-text .hero-badge {
            display: inline-block;
            background: rgba(255, 183, 3, 0.2);
            color: var(--color-emphasis);
            font-size: 0.85rem;
            font-weight: 600;
            padding: 6px 14px;
            border-radius: 20px;
            margin-bottom: 18px;
            letter-spacing: 0.04em;
            border: 1px solid rgba(255, 183, 3, 0.3);
        }
        .hero-text h1 {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 16px;
            letter-spacing: 0.02em;
            text-shadow: 0 2px 12px rgba(0, 0, 0, 0.4);
            color: #FFFFFF;
        }
        .hero-text h1 .highlight {
            color: var(--color-emphasis);
        }
        .hero-text .hero-subtitle {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.8);
            line-height: 1.6;
            margin-bottom: 28px;
            max-width: 480px;
        }
        .hero-text .hero-cta-group {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.95rem;
            letter-spacing: 0.03em;
            transition: all var(--transition-fast);
            text-decoration: none;
            white-space: nowrap;
            cursor: pointer;
        }
        .btn-primary {
            background: var(--color-emphasis);
            color: #1A1A1A;
            box-shadow: 0 4px 16px rgba(255, 183, 3, 0.35);
        }
        .btn-primary:hover {
            background: #E5A800;
            box-shadow: 0 6px 24px rgba(255, 183, 3, 0.5);
            transform: translateY(-2px);
            text-decoration: none;
            color: #1A1A1A;
        }
        .btn-accent {
            background: var(--color-accent);
            color: #fff;
            box-shadow: 0 4px 14px rgba(0, 168, 150, 0.3);
        }
        .btn-accent:hover {
            background: var(--color-accent-dark);
            box-shadow: 0 6px 22px rgba(0, 168, 150, 0.45);
            transform: translateY(-2px);
            text-decoration: none;
            color: #fff;
        }
        .btn-outline {
            background: transparent;
            color: #fff;
            border: 1.5px solid rgba(255, 255, 255, 0.4);
        }
        .btn-outline:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.08);
            text-decoration: none;
            color: #fff;
        }
        .btn-lg {
            padding: 16px 34px;
            font-size: 1.05rem;
            border-radius: 10px;
        }

        .hero-card-highlight {
            background: rgba(255, 255, 255, 0.06);
            backdrop-filter: blur(20px);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            color: #fff;
            position: relative;
            z-index: 2;
            box-shadow: 0 16px 48px rgba(0, 0, 0, 0.3);
        }
        .hero-card-highlight .card-recommend-tag {
            position: absolute;
            top: -14px;
            left: 24px;
            background: var(--color-emphasis);
            color: #1A1A1A;
            font-weight: 700;
            font-size: 0.8rem;
            padding: 6px 16px;
            border-radius: 20px;
            letter-spacing: 0.04em;
            box-shadow: 0 4px 14px rgba(255, 183, 3, 0.4);
        }
        .hero-card-highlight .card-plan-name {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 6px;
            color: #fff;
        }
        .hero-card-highlight .card-plan-price {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--color-emphasis);
            margin-bottom: 4px;
            letter-spacing: 0.02em;
        }
        .hero-card-highlight .card-plan-price span {
            font-size: 0.9rem;
            font-weight: 400;
            color: rgba(255, 255, 255, 0.6);
        }
        .hero-card-highlight .card-features {
            margin: 16px 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .hero-card-highlight .card-features li {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.85);
        }
        .hero-card-highlight .card-features li::before {
            content: '✓';
            color: var(--color-accent);
            font-weight: 700;
            flex-shrink: 0;
        }
        .hero-card-highlight .btn {
            width: 100%;
            justify-content: center;
            margin-top: 8px;
        }

        /* ========== SECTIONS GENERAL ========== */
        section {
            padding: 80px 0;
            position: relative;
        }
        section.section-alt {
            background: var(--color-bg-light);
        }
        section.section-dark {
            background: var(--color-primary);
            color: #fff;
        }
        .section-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 700;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            color: var(--color-accent);
            margin-bottom: 10px;
            padding: 4px 12px;
            background: rgba(0, 168, 150, 0.08);
            border-radius: 4px;
        }
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 12px;
            letter-spacing: 0.02em;
            color: var(--color-text-dark);
        }
        .section-dark .section-title {
            color: #fff;
        }
        .section-desc {
            font-size: 1rem;
            color: var(--color-text-secondary);
            max-width: 640px;
            line-height: 1.7;
            margin-bottom: 32px;
        }
        .section-dark .section-desc {
            color: rgba(255, 255, 255, 0.7);
        }
        .section-header {
            text-align: center;
            margin-bottom: 44px;
        }
        .section-header .section-desc {
            margin-left: auto;
            margin-right: auto;
        }

        /* ========== RESOURCE DIRECTORY ========== */
        .resource-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .resource-card {
            background: #fff;
            border-radius: var(--radius-md);
            padding: 24px 20px;
            text-align: center;
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-normal);
            cursor: pointer;
            text-decoration: none;
            color: inherit;
        }
        .resource-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: var(--color-accent);
            text-decoration: none;
            color: inherit;
        }
        .resource-card .resource-icon {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: rgba(0, 168, 150, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 14px;
            font-size: 1.4rem;
            color: var(--color-accent);
        }
        .resource-card h3 {
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: 6px;
            color: var(--color-text-dark);
        }
        .resource-card p {
            font-size: 0.85rem;
            color: var(--color-text-secondary);
            line-height: 1.5;
        }

        /* ========== VALUE POINTS ========== */
        .value-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .value-card {
            background: #fff;
            border-radius: var(--radius-md);
            padding: 30px 24px;
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-normal);
            position: relative;
            overflow: hidden;
        }
        .value-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .value-card .value-number {
            font-size: 3.5rem;
            font-weight: 800;
            color: rgba(0, 168, 150, 0.08);
            position: absolute;
            top: 6px;
            right: 16px;
            line-height: 1;
            pointer-events: none;
        }
        .value-card .value-icon {
            width: 44px;
            height: 44px;
            border-radius: 10px;
            background: rgba(0, 168, 150, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 14px;
            font-size: 1.2rem;
            color: var(--color-accent);
        }
        .value-card h3 {
            font-size: 1.15rem;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--color-text-dark);
        }
        .value-card p {
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            line-height: 1.6;
        }

        /* ========== BRAND INTRO ========== */
        .brand-intro-block {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 40px 36px;
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-sm);
            max-width: 900px;
            margin: 0 auto;
            line-height: 1.8;
            font-size: 1rem;
            color: var(--color-text-dark);
        }
        .brand-intro-block p {
            margin-bottom: 14px;
        }
        .brand-intro-block p:last-child {
            margin-bottom: 0;
        }

        /* ========== ENTRY MATRIX ========== */
        .entry-matrix {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .entry-card {
            background: #fff;
            border-radius: var(--radius-md);
            padding: 26px 22px;
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-normal);
            text-align: center;
            text-decoration: none;
            color: inherit;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 10px;
        }
        .entry-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: var(--color-accent);
            text-decoration: none;
            color: inherit;
        }
        .entry-card .entry-icon {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--color-accent), var(--color-accent-light));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: #fff;
            margin-bottom: 4px;
        }
        .entry-card h3 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-text-dark);
        }
        .entry-card p {
            font-size: 0.8rem;
            color: var(--color-text-secondary);
        }

        /* ========== NEWS SECTION ========== */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .news-card {
            background: #fff;
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-normal);
            display: flex;
            flex-direction: column;
        }
        .news-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
            border-color: rgba(0, 168, 150, 0.3);
        }
        .news-card .news-img {
            width: 100%;
            aspect-ratio: 16 / 9;
            object-fit: cover;
            background: #E2E8F0;
            display: block;
        }
        .news-card .news-body {
            padding: 18px 16px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .news-card .news-date {
            font-size: 0.8rem;
            color: var(--color-accent);
            font-weight: 600;
            margin-bottom: 6px;
            letter-spacing: 0.03em;
        }
        .news-card h3 {
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--color-text-dark);
            line-height: 1.4;
        }
        .news-card p {
            font-size: 0.85rem;
            color: var(--color-text-secondary);
            line-height: 1.5;
            flex: 1;
            margin-bottom: 12px;
        }
        .news-card .read-more {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-weight: 600;
            font-size: 0.85rem;
            color: var(--color-accent);
            transition: all var(--transition-fast);
            align-self: flex-start;
            border-bottom: 1.5px solid transparent;
            padding-bottom: 2px;
        }
        .news-card .read-more:hover {
            border-bottom-color: var(--color-accent);
            text-decoration: none;
            color: var(--color-accent-dark);
        }

        /* ========== DEEP CONTENT ========== */
        .deep-content-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }
        .deep-content-row.reverse {
            direction: rtl;
        }
        .deep-content-row.reverse>* {
            direction: ltr;
        }
        .deep-content-text h3 {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 14px;
            color: var(--color-text-dark);
        }
        .deep-content-text p {
            font-size: 0.95rem;
            color: var(--color-text-secondary);
            line-height: 1.8;
            margin-bottom: 12px;
        }
        .deep-content-text .btn {
            margin-top: 8px;
        }
        .deep-content-img {
            border-radius: var(--radius-lg);
            overflow: hidden;
            aspect-ratio: 4 / 3;
            background: #E2E8F0;
            box-shadow: var(--shadow-md);
        }
        .deep-content-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .deep-content-full {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 36px 32px;
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-sm);
            max-width: 900px;
            margin: 0 auto;
        }
        .deep-content-full h3 {
            font-size: 1.4rem;
            font-weight: 700;
            margin-bottom: 14px;
            color: var(--color-text-dark);
        }
        .deep-content-full p {
            font-size: 0.95rem;
            color: var(--color-text-secondary);
            line-height: 1.8;
            margin-bottom: 12px;
        }

        /* ========== HOT LIST ========== */
        .hot-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
            max-width: 800px;
            margin: 0 auto;
        }
        .hot-item {
            display: flex;
            align-items: center;
            gap: 16px;
            background: #fff;
            border-radius: var(--radius-md);
            padding: 16px 20px;
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-normal);
            cursor: pointer;
        }
        .hot-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateX(4px);
            border-color: rgba(0, 168, 150, 0.3);
        }
        .hot-item .hot-rank {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--color-accent);
            min-width: 44px;
            text-align: center;
            flex-shrink: 0;
        }
        .hot-item .hot-rank.top {
            color: var(--color-emphasis);
        }
        .hot-item .hot-info h4 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-text-dark);
            margin-bottom: 4px;
        }
        .hot-item .hot-info p {
            font-size: 0.8rem;
            color: var(--color-text-secondary);
        }
        .hot-item .btn {
            margin-left: auto;
            flex-shrink: 0;
        }

        /* ========== TESTIMONIALS ========== */
        .testimonial-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .testimonial-card {
            background: #fff;
            border-radius: var(--radius-md);
            padding: 28px 22px;
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-sm);
            text-align: center;
            transition: all var(--transition-normal);
        }
        .testimonial-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .testimonial-card .avatar-placeholder {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: #E2E8F0;
            margin: 0 auto 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: var(--color-accent);
        }
        .testimonial-card .quote {
            font-size: 0.95rem;
            color: var(--color-text-dark);
            line-height: 1.6;
            margin-bottom: 12px;
            font-style: italic;
        }
        .testimonial-card .author {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--color-text-dark);
        }
        .testimonial-card .author-role {
            font-size: 0.75rem;
            color: var(--color-text-secondary);
        }

        /* ========== STEPS ========== */
        .steps-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            position: relative;
        }
        .step-card {
            text-align: center;
            position: relative;
            z-index: 1;
        }
        .step-card .step-number {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--color-accent);
            color: #fff;
            font-weight: 700;
            font-size: 1.2rem;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 12px;
            box-shadow: 0 4px 12px rgba(0, 168, 150, 0.3);
        }
        .step-card h4 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 6px;
            color: var(--color-text-dark);
        }
        .step-card p {
            font-size: 0.85rem;
            color: var(--color-text-secondary);
            line-height: 1.5;
        }

        /* ========== DATA METRICS ========== */
        .metrics-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
        }
        .metric-item .metric-number {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--color-emphasis);
            letter-spacing: 0.02em;
            line-height: 1;
        }
        .metric-item .metric-label {
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            margin-top: 6px;
        }
        .section-dark .metric-item .metric-label {
            color: rgba(255, 255, 255, 0.7);
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            background: var(--color-primary);
            color: #fff;
            text-align: center;
            padding: 70px 0;
        }
        .cta-section .cta-inner {
            max-width: 600px;
            margin: 0 auto;
        }
        .cta-section h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .cta-section p {
            font-size: 1rem;
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: 24px;
            line-height: 1.6;
        }
        .cta-form {
            display: flex;
            gap: 10px;
            max-width: 460px;
            margin: 0 auto;
            flex-wrap: wrap;
            justify-content: center;
        }
        .cta-form input {
            flex: 1;
            min-width: 220px;
            padding: 13px 18px;
            border-radius: var(--radius-sm);
            border: 1px solid rgba(255, 255, 255, 0.25);
            background: rgba(255, 255, 255, 0.08);
            color: #fff;
            font-size: 0.95rem;
        }
        .cta-form input::placeholder {
            color: rgba(255, 255, 255, 0.45);
        }
        .cta-form .btn {
            flex-shrink: 0;
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: #fff;
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border);
            overflow: hidden;
            transition: all var(--transition-fast);
        }
        .faq-item .faq-question {
            padding: 18px 20px;
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--color-text-dark);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            user-select: none;
            transition: background var(--transition-fast);
        }
        .faq-item .faq-question:hover {
            background: rgba(0, 168, 150, 0.03);
        }
        .faq-item .faq-arrow {
            transition: transform var(--transition-normal);
            flex-shrink: 0;
            color: var(--color-accent);
            font-size: 1rem;
        }
        .faq-item.open .faq-arrow {
            transform: rotate(180deg);
        }
        .faq-item .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-slow);
            padding: 0 20px;
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 20px 18px;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--color-primary);
            color: rgba(255, 255, 255, 0.7);
            padding: 44px 0 28px;
            font-size: 0.85rem;
            line-height: 1.8;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            margin-bottom: 28px;
        }
        .footer-grid h4 {
            color: #fff;
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 10px;
        }
        .footer-grid a {
            color: rgba(255, 255, 255, 0.65);
            font-size: 0.85rem;
            transition: color var(--transition-fast);
            display: block;
            margin-bottom: 4px;
        }
        .footer-grid a:hover {
            color: #fff;
            text-decoration: none;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            font-size: 0.8rem;
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.6);
            transition: color var(--transition-fast);
        }
        .footer-bottom a:hover {
            color: #fff;
            text-decoration: none;
        }
        .footer-social-icons {
            display: flex;
            gap: 12px;
        }
        .footer-social-icons a {
            width: 34px;
            height: 34px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.9rem;
            transition: all var(--transition-fast);
            color: rgba(255, 255, 255, 0.7);
        }
        .footer-social-icons a:hover {
            background: var(--color-accent);
            color: #fff;
            text-decoration: none;
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .hero-content {
                grid-template-columns: 1fr;
                gap: 36px;
                text-align: center;
            }
            .hero-text .hero-subtitle {
                max-width: 100%;
            }
            .hero-text .hero-cta-group {
                justify-content: center;
            }
            .hero-card-highlight {
                max-width: 440px;
                margin: 0 auto;
            }
            .resource-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .value-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .entry-matrix {
                grid-template-columns: repeat(2, 1fr);
            }
            .testimonial-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-row {
                grid-template-columns: repeat(2, 1fr);
            }
            .metrics-row {
                grid-template-columns: repeat(2, 1fr);
            }
            .deep-content-row {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .header-nav {
                display: none;
            }
            .mobile-menu-toggle {
                display: flex;
            }
            .header-search {
                display: none;
            }
            .hero-text h1 {
                font-size: 2.2rem;
            }
            section {
                padding: 56px 0;
            }
            .section-title {
                font-size: 1.6rem;
            }
        }

        @media (max-width: 768px) {
            .hero-text h1 {
                font-size: 1.8rem;
            }
            .hero-text .hero-subtitle {
                font-size: 0.95rem;
            }
            .resource-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .value-grid {
                grid-template-columns: 1fr;
            }
            .news-grid {
                grid-template-columns: 1fr;
            }
            .entry-matrix {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .testimonial-grid {
                grid-template-columns: 1fr;
            }
            .steps-row {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .metrics-row {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            section {
                padding: 44px 0;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .hero-card-highlight {
                padding: 22px 18px;
            }
            .hero-card-highlight .card-plan-price {
                font-size: 1.8rem;
            }
            .hot-item {
                flex-wrap: wrap;
                gap: 10px;
            }
            .hot-item .btn {
                margin-left: 0;
                width: 100%;
                text-align: center;
                justify-content: center;
            }
            .cta-form {
                flex-direction: column;
            }
            .cta-form input {
                min-width: auto;
                width: 100%;
            }
            .brand-intro-block {
                padding: 24px 18px;
            }
            .deep-content-full {
                padding: 22px 16px;
            }
        }

        @media (max-width: 520px) {
            .hero-text h1 {
                font-size: 1.5rem;
            }
            .hero-content {
                padding: 40px 14px 60px;
            }
            .resource-grid {
                grid-template-columns: 1fr;
            }
            .entry-matrix {
                grid-template-columns: 1fr;
            }
            .steps-row {
                grid-template-columns: 1fr;
            }
            .metrics-row {
                grid-template-columns: 1fr;
            }
            .btn {
                padding: 11px 20px;
                font-size: 0.85rem;
            }
            .btn-lg {
                padding: 14px 24px;
                font-size: 0.9rem;
            }
            .hero-card-highlight {
                padding: 18px 14px;
            }
            .section-title {
                font-size: 1.25rem;
            }
        }

/* roulang page: category1 */
:root {
            --color-primary: #0D1B2A;
            --color-primary-light: #152238;
            --color-accent: #00A896;
            --color-accent-dark: #008B7A;
            --color-accent-light: #00B4A6;
            --color-emphasis: #FFB703;
            --color-emphasis-glow: rgba(255, 183, 3, 0.55);
            --color-text: #E0E6ED;
            --color-text-secondary: #8A9BB5;
            --color-text-dark: #1A2B3C;
            --color-bg-light: #F4F6F9;
            --color-card-bg: #FFFFFF;
            --color-border: rgba(0, 0, 0, 0.06);
            --color-border-light: #E2E8F0;
            --color-glass-bg: rgba(13, 27, 42, 0.75);
            --color-glass-border: rgba(255, 255, 255, 0.08);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);
            --shadow-glow: 0 0 20px rgba(0, 168, 150, 0.35);
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --font-mono: 'SF Mono', 'Consolas', 'Monaco', monospace;
            --max-width: 1200px;
            --nav-height: 68px;
            --transition-fast: 0.2s ease;
            --transition-normal: 0.3s ease;
            --transition-slow: 0.5s ease;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-sans);
            line-height: 1.7;
            color: var(--color-text-dark);
            background: #FAFBFC;
            min-height: 100vh;
            overflow-x: hidden;
            letter-spacing: 0.01em;
            padding-top: var(--nav-height);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            color: var(--color-accent);
            text-decoration: none;
            transition: color var(--transition-fast), text-decoration var(--transition-fast);
        }

        a:hover {
            color: var(--color-accent-dark);
            text-decoration: underline;
        }

        a:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 3px;
            border-radius: 4px;
        }

        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            background: none;
            transition: all var(--transition-fast);
        }

        button:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 3px;
            border-radius: 4px;
        }

        input {
            font-family: inherit;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
        }

        input:focus-visible {
            outline: none;
            border-color: var(--color-accent);
            box-shadow: 0 0 0 3px rgba(0, 168, 150, 0.2);
        }

        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }

        /* ========== HEADER / NAVIGATION ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--nav-height);
            background: var(--color-glass-bg);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--color-glass-border);
            transition: background var(--transition-normal), backdrop-filter var(--transition-normal), box-shadow var(--transition-normal);
        }

        .site-header.glass--solid {
            background: var(--color-primary);
            backdrop-filter: none;
            -webkit-backdrop-filter: none;
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.25);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
            gap: 16px;
        }

        .header-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 700;
            color: #FFFFFF;
            letter-spacing: 0.03em;
            white-space: nowrap;
            text-decoration: none;
            flex-shrink: 0;
        }

        .header-logo:hover {
            color: #FFFFFF;
            text-decoration: none;
            opacity: 0.9;
        }

        .header-logo .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--color-accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            color: #fff;
            flex-shrink: 0;
        }

        .header-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            flex-wrap: nowrap;
        }

        .header-nav a {
            display: inline-flex;
            align-items: center;
            padding: 8px 14px;
            border-radius: 6px;
            color: rgba(255, 255, 255, 0.85);
            font-size: 0.9rem;
            font-weight: 500;
            white-space: nowrap;
            transition: all var(--transition-fast);
            text-decoration: none;
        }

        .header-nav a:hover {
            background: rgba(255, 255, 255, 0.1);
            color: #FFFFFF;
            text-decoration: none;
        }

        .header-nav a.active {
            background: rgba(0, 168, 150, 0.25);
            color: #FFFFFF;
            font-weight: 600;
        }

        .header-nav .nav-cta {
            background: var(--color-accent);
            color: #FFFFFF;
            font-weight: 600;
            padding: 10px 20px;
            border-radius: 8px;
            margin-left: 8px;
            transition: all var(--transition-fast);
        }

        .header-nav .nav-cta:hover {
            background: var(--color-accent-dark);
            color: #FFFFFF;
            box-shadow: var(--shadow-glow);
            text-decoration: none;
        }

        .header-search-btn {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            color: rgba(255, 255, 255, 0.85);
            font-size: 1.1rem;
            transition: all var(--transition-fast);
            flex-shrink: 0;
        }

        .header-search-btn:hover {
            background: rgba(255, 255, 255, 0.12);
            color: #FFFFFF;
        }

        .mobile-menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            cursor: pointer;
            z-index: 1001;
            background: none;
            border: none;
        }

        .mobile-menu-toggle span {
            display: block;
            width: 24px;
            height: 2px;
            background: #FFFFFF;
            border-radius: 2px;
            transition: all var(--transition-fast);
        }

        .mobile-menu-toggle.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }

        .mobile-menu-toggle.active span:nth-child(2) {
            opacity: 0;
        }

        .mobile-menu-toggle.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        /* ========== PAGE HERO ========== */
        .page-hero {
            position: relative;
            min-height: 420px;
            display: flex;
            align-items: center;
            background: var(--color-primary);
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            overflow: hidden;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(13, 27, 42, 0.82) 0%, rgba(13, 27, 42, 0.55) 60%, rgba(13, 27, 42, 0.78) 100%);
            z-index: 1;
        }

        .page-hero .hero-content {
            position: relative;
            z-index: 2;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 60px 20px;
            width: 100%;
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .page-hero .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(0, 168, 150, 0.2);
            border: 1px solid rgba(0, 168, 150, 0.35);
            color: var(--color-accent-light);
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 600;
            width: fit-content;
            letter-spacing: 0.04em;
        }

        .page-hero h1 {
            font-size: 2.8rem;
            font-weight: 800;
            color: #FFFFFF;
            line-height: 1.2;
            letter-spacing: 0.02em;
            max-width: 700px;
            text-shadow: 0 2px 12px rgba(0, 0, 0, 0.35);
        }

        .page-hero .hero-subtitle {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.8);
            max-width: 580px;
            line-height: 1.6;
        }

        .page-hero .hero-cta-row {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            margin-top: 8px;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--color-emphasis);
            color: #1A1A1A;
            font-weight: 700;
            padding: 14px 30px;
            border-radius: 8px;
            font-size: 1rem;
            transition: all var(--transition-fast);
            text-decoration: none;
            letter-spacing: 0.02em;
            border: none;
            cursor: pointer;
        }

        .btn-primary:hover {
            background: #E5A800;
            box-shadow: 0 0 22px var(--color-emphasis-glow);
            transform: translateY(-2px);
            text-decoration: none;
            color: #1A1A1A;
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            border: 1.5px solid var(--color-accent);
            color: var(--color-accent-light);
            font-weight: 600;
            padding: 14px 28px;
            border-radius: 8px;
            font-size: 1rem;
            transition: all var(--transition-fast);
            text-decoration: none;
            cursor: pointer;
        }

        .btn-secondary:hover {
            background: rgba(0, 168, 150, 0.1);
            border-color: var(--color-accent-light);
            color: #FFFFFF;
            text-decoration: none;
        }

        .btn-outline-white {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: transparent;
            border: 1.5px solid rgba(255, 255, 255, 0.5);
            color: #FFFFFF;
            font-weight: 500;
            padding: 10px 22px;
            border-radius: 8px;
            font-size: 0.9rem;
            transition: all var(--transition-fast);
            text-decoration: none;
            cursor: pointer;
        }

        .btn-outline-white:hover {
            border-color: #FFFFFF;
            background: rgba(255, 255, 255, 0.08);
            color: #FFFFFF;
            text-decoration: none;
        }

        /* ========== SECTIONS ========== */
        .section {
            padding: 80px 0;
        }

        .section-sm {
            padding: 50px 0;
        }

        .section-bg-light {
            background: var(--color-bg-light);
        }

        .section-bg-dark {
            background: var(--color-primary);
            color: var(--color-text);
        }

        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }

        .section-header h2 {
            font-size: 2rem;
            font-weight: 700;
            color: var(--color-text-dark);
            margin-bottom: 12px;
            letter-spacing: 0.02em;
        }

        .section-bg-dark .section-header h2 {
            color: #FFFFFF;
        }

        .section-header .section-subtitle {
            font-size: 1.05rem;
            color: var(--color-text-secondary);
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.6;
        }

        .section-bg-dark .section-header .section-subtitle {
            color: rgba(255, 255, 255, 0.65);
        }

        /* ========== FEATURE CARDS GRID ========== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .feature-card {
            background: var(--color-card-bg);
            border-radius: var(--radius-md);
            padding: 32px 28px;
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-normal);
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(0, 168, 150, 0.2);
        }

        .feature-card .feature-icon {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-sm);
            background: rgba(0, 168, 150, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            flex-shrink: 0;
        }

        .feature-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--color-text-dark);
            letter-spacing: 0.02em;
        }

        .feature-card p {
            font-size: 0.95rem;
            color: #5A6B7C;
            line-height: 1.65;
            margin: 0;
        }

        /* ========== COVERAGE GRID ========== */
        .coverage-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .coverage-card {
            background: var(--color-card-bg);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-normal);
            cursor: default;
        }

        .coverage-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-md);
            border-color: rgba(0, 168, 150, 0.25);
        }

        .coverage-card .coverage-img {
            width: 100%;
            aspect-ratio: 16 / 10;
            object-fit: cover;
            background: #E2E8F0;
        }

        .coverage-card .coverage-body {
            padding: 18px 16px;
            text-align: center;
        }

        .coverage-card h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--color-text-dark);
            margin-bottom: 4px;
        }

        .coverage-card .coverage-tag {
            font-size: 0.8rem;
            color: var(--color-accent);
            font-weight: 600;
        }

        /* ========== STATS ROW ========== */
        .stats-row {
            display: flex;
            justify-content: center;
            gap: 60px;
            flex-wrap: wrap;
            text-align: center;
        }

        .stat-item {
            display: flex;
            flex-direction: column;
            gap: 6px;
        }

        .stat-number {
            font-size: 3rem;
            font-weight: 800;
            color: var(--color-accent);
            letter-spacing: 0.03em;
            line-height: 1;
            font-family: var(--font-mono);
        }

        .stat-label {
            font-size: 0.95rem;
            color: var(--color-text-secondary);
            font-weight: 500;
        }

        .section-bg-dark .stat-label {
            color: rgba(255, 255, 255, 0.6);
        }

        .section-bg-dark .stat-number {
            color: var(--color-emphasis);
        }

        /* ========== DEEP CONTENT ========== */
        .deep-content-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .deep-content-row.reverse {
            direction: rtl;
        }

        .deep-content-row.reverse>* {
            direction: ltr;
        }

        .deep-content-text h3 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--color-text-dark);
            margin-bottom: 16px;
            letter-spacing: 0.02em;
        }

        .deep-content-text p {
            font-size: 0.98rem;
            color: #4A5B6C;
            line-height: 1.75;
            margin-bottom: 12px;
        }

        .deep-content-text .highlight-box {
            background: rgba(0, 168, 150, 0.06);
            border-left: 3px solid var(--color-accent);
            padding: 14px 18px;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            margin: 16px 0;
            font-weight: 500;
            color: var(--color-text-dark);
        }

        .deep-content-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
        }

        .deep-content-image img {
            width: 100%;
            aspect-ratio: 16 / 11;
            object-fit: cover;
            background: #E2E8F0;
        }

        /* ========== TESTIMONIALS ========== */
        .testimonials-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .testimonial-card {
            background: var(--color-card-bg);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-sm);
            display: flex;
            flex-direction: column;
            gap: 14px;
            transition: all var(--transition-normal);
        }

        .testimonial-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-md);
        }

        .testimonial-card .testimonial-quote {
            font-size: 0.95rem;
            color: #3D4F60;
            line-height: 1.7;
            font-style: italic;
            position: relative;
            padding-left: 20px;
        }

        .testimonial-card .testimonial-quote::before {
            content: '"';
            position: absolute;
            left: 0;
            top: -6px;
            font-size: 2.5rem;
            color: var(--color-accent);
            line-height: 1;
            font-style: normal;
            font-weight: 700;
            opacity: 0.5;
        }

        .testimonial-author {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .testimonial-avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: #E2E8F0;
            flex-shrink: 0;
        }

        .testimonial-author .author-name {
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--color-text-dark);
        }

        .testimonial-author .author-role {
            font-size: 0.8rem;
            color: var(--color-text-secondary);
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: var(--color-card-bg);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border);
            overflow: hidden;
            transition: all var(--transition-fast);
        }

        .faq-item:hover {
            border-color: rgba(0, 168, 150, 0.25);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 22px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-text-dark);
            text-align: left;
            cursor: pointer;
            background: none;
            border: none;
            gap: 12px;
            transition: background var(--transition-fast);
        }

        .faq-question:hover {
            background: rgba(0, 168, 150, 0.03);
        }

        .faq-question .faq-arrow {
            flex-shrink: 0;
            width: 22px;
            height: 22px;
            transition: transform var(--transition-normal);
            color: var(--color-accent);
            font-size: 1.1rem;
        }

        .faq-item.open .faq-arrow {
            transform: rotate(180deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-normal);
            padding: 0 22px;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 22px 20px;
        }

        .faq-answer p {
            font-size: 0.93rem;
            color: #4A5B6C;
            line-height: 1.7;
            margin: 0;
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            background: var(--color-primary);
            padding: 70px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at center, rgba(0, 168, 150, 0.12) 0%, transparent 70%);
            pointer-events: none;
        }

        .cta-section .container {
            position: relative;
            z-index: 1;
        }

        .cta-section h2 {
            font-size: 2rem;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 12px;
            letter-spacing: 0.02em;
        }

        .cta-section .cta-desc {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.7);
            max-width: 500px;
            margin: 0 auto 28px;
            line-height: 1.6;
        }

        .cta-form {
            display: flex;
            gap: 10px;
            max-width: 460px;
            margin: 0 auto;
            flex-wrap: wrap;
            justify-content: center;
        }

        .cta-form input {
            flex: 1;
            min-width: 220px;
            padding: 14px 18px;
            border-radius: 8px;
            border: 1px solid #CBD5E1;
            font-size: 0.95rem;
            background: #FFFFFF;
            color: var(--color-text-dark);
            transition: all var(--transition-fast);
        }

        .cta-form input:focus {
            border-color: var(--color-accent);
            box-shadow: 0 0 0 3px rgba(0, 168, 150, 0.2);
            outline: none;
        }

        .cta-form .btn-primary {
            flex-shrink: 0;
            white-space: nowrap;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--color-primary);
            padding: 50px 0 28px;
            color: var(--color-text);
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 36px;
        }

        .footer-grid h4 {
            font-size: 1rem;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 14px;
            letter-spacing: 0.03em;
        }

        .footer-grid a {
            display: block;
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.9rem;
            padding: 4px 0;
            transition: color var(--transition-fast);
            text-decoration: none;
        }

        .footer-grid a:hover {
            color: var(--color-accent-light);
            text-decoration: none;
        }

        .footer-social-icons {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        .footer-social-icons a {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            transition: all var(--transition-fast);
            text-decoration: none;
            padding: 0;
        }

        .footer-social-icons a:hover {
            background: rgba(0, 168, 150, 0.3);
            color: #FFFFFF;
            text-decoration: none;
        }

        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
            align-items: center;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.45);
            text-align: center;
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
            transition: color var(--transition-fast);
        }

        .footer-bottom a:hover {
            color: var(--color-accent-light);
            text-decoration: none;
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .coverage-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .testimonials-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .deep-content-row {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .deep-content-row.reverse {
                direction: ltr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .page-hero h1 {
                font-size: 2.2rem;
            }
            .header-nav a {
                padding: 6px 10px;
                font-size: 0.82rem;
            }
            .header-nav .nav-cta {
                padding: 8px 14px;
                font-size: 0.82rem;
            }
        }

        @media (max-width: 768px) {
            .header-nav {
                display: none;
                position: fixed;
                top: var(--nav-height);
                left: 0;
                right: 0;
                bottom: 0;
                background: rgba(13, 27, 42, 0.96);
                backdrop-filter: blur(16px);
                -webkit-backdrop-filter: blur(16px);
                flex-direction: column;
                padding: 30px 20px;
                gap: 8px;
                z-index: 999;
                overflow-y: auto;
            }
            .header-nav.mobile-open {
                display: flex;
            }
            .header-nav a {
                font-size: 1.05rem;
                padding: 14px 18px;
                width: 100%;
                border-radius: 8px;
                justify-content: center;
            }
            .header-nav .nav-cta {
                margin-left: 0;
                margin-top: 8px;
                text-align: center;
                justify-content: center;
                padding: 14px 20px;
            }
            .mobile-menu-toggle {
                display: flex;
            }
            .header-search-btn {
                display: none;
            }
            .features-grid {
                grid-template-columns: 1fr;
            }
            .coverage-grid {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }
            .testimonials-grid {
                grid-template-columns: 1fr;
            }
            .stats-row {
                gap: 30px;
            }
            .stat-number {
                font-size: 2.2rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .page-hero {
                min-height: 340px;
            }
            .page-hero h1 {
                font-size: 1.8rem;
            }
            .page-hero .hero-subtitle {
                font-size: 1rem;
            }
            .section {
                padding: 50px 0;
            }
            .section-header h2 {
                font-size: 1.5rem;
            }
            .cta-form {
                flex-direction: column;
                align-items: center;
            }
            .cta-form input {
                width: 100%;
                max-width: 360px;
            }
            .footer-bottom {
                flex-direction: column;
                gap: 8px;
            }
        }

        @media (max-width: 520px) {
            .page-hero h1 {
                font-size: 1.5rem;
            }
            .page-hero {
                min-height: 280px;
            }
            .page-hero .hero-content {
                padding: 40px 16px;
            }
            .coverage-grid {
                grid-template-columns: 1fr;
            }
            .stats-row {
                flex-direction: column;
                gap: 20px;
            }
            .btn-primary,
            .btn-secondary {
                padding: 12px 22px;
                font-size: 0.9rem;
            }
            .hero-cta-row {
                flex-direction: column;
                gap: 10px;
            }
            .hero-cta-row .btn-primary,
            .hero-cta-row .btn-secondary {
                width: 100%;
                text-align: center;
                justify-content: center;
            }
        }

/* roulang page: category2 */
:root {
            --color-primary: #0D1B2A;
            --color-primary-light: #152238;
            --color-accent: #00A896;
            --color-accent-dark: #008B7A;
            --color-accent-light: #00B4A6;
            --color-emphasis: #FFB703;
            --color-emphasis-glow: rgba(255, 183, 3, 0.55);
            --color-text: #E0E6ED;
            --color-text-secondary: #8A9BB5;
            --color-text-dark: #1A2B3C;
            --color-bg-light: #F4F6F9;
            --color-card-bg: #FFFFFF;
            --color-border: rgba(0, 0, 0, 0.06);
            --color-border-light: #E2E8F0;
            --color-glass-bg: rgba(13, 27, 42, 0.75);
            --color-glass-border: rgba(255, 255, 255, 0.08);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);
            --shadow-glow: 0 0 20px rgba(0, 168, 150, 0.35);
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --font-mono: 'SF Mono', 'Consolas', 'Monaco', monospace;
            --max-width: 1200px;
            --nav-height: 68px;
            --transition-fast: 0.2s ease;
            --transition-normal: 0.3s ease;
            --transition-slow: 0.5s ease;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-sans);
            line-height: 1.7;
            color: var(--color-text-dark);
            background: #FAFBFC;
            min-height: 100vh;
            overflow-x: hidden;
            letter-spacing: 0.01em;
            padding-top: var(--nav-height);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            color: var(--color-accent);
            text-decoration: none;
            transition: color var(--transition-fast), text-decoration var(--transition-fast);
        }

        a:hover {
            color: var(--color-accent-dark);
            text-decoration: underline;
        }

        a:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 3px;
            border-radius: 4px;
        }

        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            background: none;
            transition: all var(--transition-fast);
        }

        button:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 3px;
            border-radius: 4px;
        }

        input {
            font-family: inherit;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
        }

        input:focus-visible {
            outline: none;
            border-color: var(--color-accent);
            box-shadow: 0 0 0 3px rgba(0, 168, 150, 0.2);
        }

        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }

        /* ========== HEADER / NAVIGATION ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--nav-height);
            background: var(--color-glass-bg);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--color-glass-border);
            transition: background var(--transition-normal), backdrop-filter var(--transition-normal), box-shadow var(--transition-normal);
        }

        .site-header.glass--solid {
            background: var(--color-primary);
            backdrop-filter: none;
            -webkit-backdrop-filter: none;
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.25);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }

        .header-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 700;
            color: #FFFFFF;
            letter-spacing: 0.03em;
            white-space: nowrap;
            text-decoration: none;
            flex-shrink: 0;
        }

        .header-logo:hover {
            color: #FFFFFF;
            text-decoration: none;
            opacity: 0.9;
        }

        .header-logo .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--color-accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            color: #fff;
            flex-shrink: 0;
        }

        .header-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            flex-wrap: nowrap;
        }

        .header-nav a {
            display: inline-flex;
            align-items: center;
            padding: 8px 14px;
            border-radius: 6px;
            color: rgba(255, 255, 255, 0.85);
            font-size: 0.9rem;
            font-weight: 500;
            white-space: nowrap;
            transition: all var(--transition-fast);
            text-decoration: none;
        }

        .header-nav a:hover {
            color: #FFFFFF;
            background: rgba(255, 255, 255, 0.1);
            text-decoration: none;
        }

        .header-nav a.active {
            color: #FFFFFF;
            background: rgba(0, 168, 150, 0.25);
            font-weight: 600;
        }

        .header-nav .nav-cta {
            background: var(--color-emphasis);
            color: #1A1A1A;
            font-weight: 600;
            padding: 8px 18px;
            border-radius: 20px;
            margin-left: 8px;
        }

        .header-nav .nav-cta:hover {
            background: #FFC940;
            color: #1A1A1A;
            box-shadow: 0 0 14px var(--color-emphasis-glow);
            text-decoration: none;
        }

        .nav-search {
            position: relative;
            display: flex;
            align-items: center;
        }

        .nav-search-btn {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, 0.85);
            font-size: 1.1rem;
            background: transparent;
            cursor: pointer;
            flex-shrink: 0;
        }

        .nav-search-btn:hover {
            background: rgba(255, 255, 255, 0.12);
            color: #fff;
        }

        .nav-search-input-wrap {
            position: absolute;
            right: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 0;
            overflow: hidden;
            transition: width var(--transition-normal);
            background: rgba(255, 255, 255, 0.15);
            border-radius: 20px;
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
        }

        .nav-search-input-wrap.open {
            width: 220px;
        }

        .nav-search-input-wrap input {
            width: 100%;
            padding: 8px 16px;
            border: 1px solid rgba(255, 255, 255, 0.3);
            border-radius: 20px;
            background: transparent;
            color: #fff;
            font-size: 0.9rem;
            outline: none;
        }

        .nav-search-input-wrap input::placeholder {
            color: rgba(255, 255, 255, 0.55);
        }

        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            padding: 8px;
            z-index: 1001;
            background: transparent;
            border: none;
        }

        .hamburger span {
            width: 26px;
            height: 2.5px;
            background: #fff;
            border-radius: 2px;
            transition: all var(--transition-fast);
            display: block;
        }

        .hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }

        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }

        .hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        @media (max-width: 1024px) {
            .header-nav {
                position: fixed;
                top: 0;
                right: -100%;
                width: 75%;
                max-width: 360px;
                height: 100vh;
                background: rgba(13, 27, 42, 0.96);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 90px 30px 40px;
                gap: 6px;
                transition: right var(--transition-normal);
                z-index: 999;
                border-left: 1px solid rgba(255, 255, 255, 0.08);
            }

            .header-nav.open {
                right: 0;
            }

            .header-nav a {
                width: 100%;
                padding: 12px 16px;
                font-size: 1rem;
                border-radius: 8px;
            }

            .header-nav .nav-cta {
                margin-left: 0;
                margin-top: 12px;
                text-align: center;
                justify-content: center;
                border-radius: 8px;
            }

            .hamburger {
                display: flex;
            }

            .nav-search {
                display: none;
            }
        }

        @media (max-width: 520px) {
            .header-logo {
                font-size: 1.1rem;
                gap: 6px;
            }

            .header-logo .logo-icon {
                width: 30px;
                height: 30px;
                font-size: 0.9rem;
            }

            .header-nav {
                width: 85%;
                max-width: none;
                padding: 80px 20px 30px;
            }
        }

        /* ========== SECTION BASE ========== */
        .section {
            padding: 70px 0;
        }

        .section-sm {
            padding: 45px 0;
        }

        .section-lg {
            padding: 90px 0;
        }

        .section-dark {
            background: var(--color-primary);
            color: var(--color-text);
        }

        .section-light {
            background: var(--color-bg-light);
        }

        .section-white {
            background: #FFFFFF;
        }

        .section-accent-bg {
            background: linear-gradient(135deg, #0D1B2A 0%, #152238 50%, #0D1B2A 100%);
            color: var(--color-text);
        }

        /* ========== SECTION TITLES ========== */
        .section-label {
            display: inline-block;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--color-accent);
            text-transform: uppercase;
            letter-spacing: 0.06em;
            margin-bottom: 10px;
            background: rgba(0, 168, 150, 0.08);
            padding: 5px 14px;
            border-radius: 20px;
        }

        .section-title {
            font-size: 1.9rem;
            font-weight: 700;
            color: var(--color-text-dark);
            margin-bottom: 14px;
            line-height: 1.3;
            letter-spacing: 0.02em;
        }

        .section-dark .section-title {
            color: #FFFFFF;
        }

        .section-subtitle {
            font-size: 1.05rem;
            color: var(--color-text-secondary);
            margin-bottom: 30px;
            line-height: 1.6;
            max-width: 700px;
        }

        .section-dark .section-subtitle {
            color: rgba(255, 255, 255, 0.7);
        }

        /* ========== HERO - 白皮书获客风格 ========== */
        .hero-whitepaper {
            background: linear-gradient(160deg, #0D1B2A 0%, #152238 35%, #0F1D30 100%);
            padding: 60px 0 70px;
            position: relative;
            overflow: hidden;
        }

        .hero-whitepaper::before {
            content: '';
            position: absolute;
            top: -80px;
            right: -120px;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(0, 168, 150, 0.12) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero-whitepaper::after {
            content: '';
            position: absolute;
            bottom: -60px;
            left: -80px;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(255, 183, 3, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero-wp-grid {
            display: grid;
            grid-template-columns: 1fr 1.1fr;
            gap: 50px;
            align-items: center;
            position: relative;
            z-index: 1;
        }

        .hero-wp-cover {
            background: #FFFFFF;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg), 0 0 0 1px rgba(255, 255, 255, 0.1);
            position: relative;
        }

        .hero-wp-cover-img {
            width: 100%;
            aspect-ratio: 4/3;
            object-fit: cover;
            display: block;
        }

        .hero-wp-cover-badge {
            position: absolute;
            top: 16px;
            left: 16px;
            background: var(--color-emphasis);
            color: #1A1A1A;
            font-weight: 700;
            font-size: 0.8rem;
            padding: 6px 14px;
            border-radius: 20px;
            letter-spacing: 0.04em;
        }

        .hero-wp-cover-label {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            background: linear-gradient(transparent, rgba(0, 0, 0, 0.75));
            padding: 30px 20px 16px;
            color: #fff;
            font-size: 0.85rem;
            font-weight: 500;
        }

        .hero-wp-content {
            color: #fff;
        }

        .hero-wp-content .section-label {
            background: rgba(0, 168, 150, 0.2);
            color: var(--color-accent-light);
        }

        .hero-wp-content h1 {
            font-size: 2.5rem;
            font-weight: 700;
            line-height: 1.25;
            margin-bottom: 14px;
            color: #FFFFFF;
            letter-spacing: 0.02em;
        }

        .hero-wp-content .hero-desc {
            font-size: 1.08rem;
            color: rgba(255, 255, 255, 0.78);
            line-height: 1.7;
            margin-bottom: 22px;
        }

        .hero-wp-toc {
            background: rgba(255, 255, 255, 0.06);
            border-radius: var(--radius-md);
            padding: 18px 22px;
            margin-bottom: 22px;
            border: 1px solid rgba(255, 255, 255, 0.1);
        }

        .hero-wp-toc h4 {
            font-size: 0.9rem;
            color: var(--color-accent-light);
            margin-bottom: 10px;
            font-weight: 600;
            letter-spacing: 0.04em;
        }

        .hero-wp-toc ul {
            list-style: none;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 7px;
        }

        .hero-wp-toc ul li {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.8);
            padding-left: 20px;
            position: relative;
            line-height: 1.5;
        }

        .hero-wp-toc ul li::before {
            content: '▸';
            position: absolute;
            left: 0;
            color: var(--color-accent);
            font-size: 0.75rem;
            top: 2px;
        }

        .hero-wp-form {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
        }

        .hero-wp-form input {
            flex: 1;
            min-width: 200px;
            padding: 13px 18px;
            border-radius: 25px;
            border: 1.5px solid rgba(255, 255, 255, 0.3);
            background: rgba(255, 255, 255, 0.08);
            color: #fff;
            font-size: 0.95rem;
        }

        .hero-wp-form input::placeholder {
            color: rgba(255, 255, 255, 0.5);
        }

        .hero-wp-form input:focus-visible {
            border-color: var(--color-accent);
            box-shadow: 0 0 0 3px rgba(0, 168, 150, 0.25);
            outline: none;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 28px;
            background: var(--color-emphasis);
            color: #1A1A1A;
            font-weight: 700;
            font-size: 0.95rem;
            border-radius: 25px;
            cursor: pointer;
            white-space: nowrap;
            transition: all var(--transition-fast);
            border: none;
            text-decoration: none;
        }

        .btn-primary:hover {
            background: #FFC940;
            box-shadow: 0 0 18px var(--color-emphasis-glow);
            transform: translateY(-1px);
            color: #1A1A1A;
            text-decoration: none;
        }

        .btn-primary:focus-visible {
            outline: 2px solid var(--color-emphasis);
            outline-offset: 3px;
        }

        @media (max-width: 768px) {
            .hero-wp-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }

            .hero-wp-content h1 {
                font-size: 1.8rem;
            }

            .hero-wp-cover {
                max-width: 400px;
                margin: 0 auto;
            }

            .hero-whitepaper {
                padding: 40px 0 50px;
            }
        }

        @media (max-width: 520px) {
            .hero-wp-content h1 {
                font-size: 1.5rem;
            }

            .hero-wp-form {
                flex-direction: column;
            }

            .hero-wp-form input {
                min-width: auto;
            }

            .hero-wp-form .btn-primary {
                justify-content: center;
                width: 100%;
            }
        }

        /* ========== CARDS GRID ========== */
        .cards-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .cards-grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .cards-grid-4 {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .card {
            background: var(--color-card-bg);
            border-radius: var(--radius-md);
            padding: 28px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border);
            transition: all var(--transition-normal);
            position: relative;
            overflow: hidden;
        }

        .card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: rgba(0, 168, 150, 0.2);
        }

        .card-icon {
            width: 50px;
            height: 50px;
            border-radius: var(--radius-sm);
            background: rgba(0, 168, 150, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            margin-bottom: 16px;
            color: var(--color-accent);
        }

        .card h3 {
            font-size: 1.2rem;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--color-text-dark);
            line-height: 1.4;
        }

        .card p {
            font-size: 0.92rem;
            color: #5A6B7C;
            line-height: 1.6;
            margin: 0;
        }

        .card-img-top {
            width: 100%;
            aspect-ratio: 16/10;
            object-fit: cover;
            border-radius: var(--radius-sm);
            margin-bottom: 16px;
        }

        .card-tag {
            display: inline-block;
            font-size: 0.78rem;
            font-weight: 600;
            padding: 4px 10px;
            border-radius: 14px;
            background: rgba(0, 168, 150, 0.1);
            color: var(--color-accent-dark);
            margin-bottom: 10px;
        }

        .card-meta {
            font-size: 0.82rem;
            color: #8A9BB5;
            margin-top: 10px;
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .card-link {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--color-accent);
            margin-top: 12px;
            transition: all var(--transition-fast);
        }

        .card-link:hover {
            color: var(--color-accent-dark);
            gap: 8px;
        }

        .card-link::after {
            content: '→';
            font-size: 1rem;
            transition: transform var(--transition-fast);
        }

        .card-link:hover::after {
            transform: translateX(3px);
        }

        @media (max-width: 1024px) {
            .cards-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .cards-grid-4 {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .cards-grid,
            .cards-grid-2,
            .cards-grid-4 {
                grid-template-columns: 1fr;
            }

            .card {
                padding: 22px;
            }
        }

        /* ========== FEATURE ROW ========== */
        .feature-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }

        .feature-row.reverse {
            direction: rtl;
        }

        .feature-row.reverse>* {
            direction: ltr;
        }

        .feature-img {
            width: 100%;
            aspect-ratio: 16/11;
            object-fit: cover;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
        }

        .feature-text h3 {
            font-size: 1.6rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--color-text-dark);
            line-height: 1.3;
        }

        .feature-text p {
            font-size: 1rem;
            color: #5A6B7C;
            line-height: 1.7;
            margin-bottom: 10px;
        }

        .feature-text .feature-list {
            list-style: none;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
            margin-top: 14px;
        }

        .feature-text .feature-list li {
            padding-left: 24px;
            position: relative;
            font-size: 0.95rem;
            color: #4A5B6C;
            line-height: 1.5;
        }

        .feature-text .feature-list li::before {
            content: '✓';
            position: absolute;
            left: 0;
            color: var(--color-accent);
            font-weight: 700;
            font-size: 0.85rem;
            top: 0;
        }

        @media (max-width: 768px) {
            .feature-row {
                grid-template-columns: 1fr;
                gap: 28px;
            }

            .feature-text h3 {
                font-size: 1.3rem;
            }

            .feature-row.reverse {
                direction: ltr;
            }
        }

        /* ========== STATS BAR ========== */
        .stats-bar {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            text-align: center;
        }

        .stat-item {
            padding: 24px 16px;
            background: rgba(255, 255, 255, 0.05);
            border-radius: var(--radius-md);
            border: 1px solid rgba(255, 255, 255, 0.08);
        }

        .stat-number {
            font-size: 2.5rem;
            font-weight: 700;
            color: var(--color-accent-light);
            letter-spacing: 0.02em;
            font-family: var(--font-mono);
            line-height: 1.2;
        }

        .stat-label {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 6px;
        }

        @media (max-width: 768px) {
            .stats-bar {
                grid-template-columns: repeat(2, 1fr);
                gap: 14px;
            }

            .stat-number {
                font-size: 2rem;
            }
        }

        @media (max-width: 520px) {
            .stats-bar {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }

            .stat-item {
                padding: 16px 10px;
            }

            .stat-number {
                font-size: 1.6rem;
            }
        }

        /* ========== PROCESS STEPS ========== */
        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            position: relative;
        }

        .process-steps::before {
            content: '';
            position: absolute;
            top: 36px;
            left: 12%;
            right: 12%;
            height: 2px;
            background: var(--color-border-light);
            z-index: 0;
        }

        .process-step {
            text-align: center;
            position: relative;
            z-index: 1;
        }

        .process-step-num {
            width: 72px;
            height: 72px;
            border-radius: 50%;
            background: var(--color-card-bg);
            border: 2px solid var(--color-accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--color-accent);
            margin: 0 auto 16px;
            position: relative;
            z-index: 2;
            transition: all var(--transition-normal);
        }

        .process-step:hover .process-step-num {
            background: var(--color-accent);
            color: #fff;
            box-shadow: var(--shadow-glow);
        }

        .process-step h4 {
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: 6px;
            color: var(--color-text-dark);
        }

        .process-step p {
            font-size: 0.85rem;
            color: #6B7D90;
            line-height: 1.5;
        }

        @media (max-width: 768px) {
            .process-steps {
                grid-template-columns: repeat(2, 1fr);
                gap: 30px 20px;
            }

            .process-steps::before {
                display: none;
            }
        }

        @media (max-width: 520px) {
            .process-steps {
                grid-template-columns: 1fr;
                gap: 24px;
            }
        }

        /* ========== FAQ ========== */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--color-card-bg);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border);
            overflow: hidden;
            transition: all var(--transition-fast);
        }

        .faq-item:hover {
            border-color: rgba(0, 168, 150, 0.25);
        }

        .faq-question {
            width: 100%;
            padding: 18px 22px;
            text-align: left;
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-text-dark);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            background: transparent;
            cursor: pointer;
            border: none;
            line-height: 1.4;
        }

        .faq-question .faq-arrow {
            width: 24px;
            height: 24px;
            flex-shrink: 0;
            transition: transform var(--transition-normal);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-accent);
            font-size: 1.1rem;
        }

        .faq-item.open .faq-question .faq-arrow {
            transform: rotate(180deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-normal);
        }

        .faq-item.open .faq-answer {
            max-height: 400px;
        }

        .faq-answer-inner {
            padding: 0 22px 18px;
            color: #5A6B7C;
            font-size: 0.93rem;
            line-height: 1.7;
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            background: var(--color-primary);
            text-align: center;
            padding: 70px 0;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            left: 50%;
            transform: translateX(-50%);
            width: 350px;
            height: 350px;
            background: radial-gradient(circle, rgba(0, 168, 150, 0.15) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-section .container {
            position: relative;
            z-index: 1;
        }

        .cta-section h2 {
            font-size: 2rem;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 10px;
            letter-spacing: 0.02em;
        }

        .cta-section p {
            color: rgba(255, 255, 255, 0.75);
            font-size: 1.05rem;
            margin-bottom: 24px;
            max-width: 550px;
            margin-left: auto;
            margin-right: auto;
        }

        .cta-form {
            display: flex;
            gap: 10px;
            max-width: 480px;
            margin: 0 auto;
            flex-wrap: wrap;
            justify-content: center;
        }

        .cta-form input {
            flex: 1;
            min-width: 200px;
            padding: 13px 18px;
            border-radius: 25px;
            border: 1.5px solid rgba(255, 255, 255, 0.3);
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
            font-size: 0.95rem;
        }

        .cta-form input::placeholder {
            color: rgba(255, 255, 255, 0.5);
        }

        .cta-form .btn-primary {
            padding: 13px 30px;
            font-size: 0.95rem;
        }

        @media (max-width: 520px) {
            .cta-section h2 {
                font-size: 1.5rem;
            }

            .cta-form {
                flex-direction: column;
                align-items: center;
            }

            .cta-form input {
                min-width: auto;
                width: 100%;
            }
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: #0A1520;
            color: rgba(255, 255, 255, 0.7);
            padding: 50px 0 0;
            font-size: 0.9rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 30px;
            padding-bottom: 30px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .footer-grid h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 14px;
            letter-spacing: 0.03em;
        }

        .footer-grid a {
            display: block;
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.88rem;
            padding: 4px 0;
            transition: color var(--transition-fast);
        }

        .footer-grid a:hover {
            color: #fff;
            text-decoration: none;
        }

        .footer-social-icons {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        .footer-social-icons a {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            transition: all var(--transition-fast);
            color: rgba(255, 255, 255, 0.7);
        }

        .footer-social-icons a:hover {
            background: var(--color-accent);
            color: #fff;
            text-decoration: none;
        }

        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            padding: 20px 0;
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.45);
            align-items: center;
            justify-content: center;
            text-align: center;
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
        }

        .footer-bottom a:hover {
            color: #fff;
        }

        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }

        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .footer-bottom {
                flex-direction: column;
                gap: 8px;
            }
        }

        /* ========== UTILITY ========== */
        .text-center {
            text-align: center;
        }

        .text-accent {
            color: var(--color-accent);
        }

        .mt-sm {
            margin-top: 12px;
        }

        .mt-md {
            margin-top: 24px;
        }

        .mt-lg {
            margin-top: 40px;
        }

        .mb-sm {
            margin-bottom: 12px;
        }

        .mb-md {
            margin-bottom: 24px;
        }

        .mb-lg {
            margin-bottom: 40px;
        }

        .highlight-box {
            background: rgba(0, 168, 150, 0.06);
            border-left: 3px solid var(--color-accent);
            padding: 16px 20px;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            margin: 16px 0;
            font-size: 0.95rem;
            color: #4A5B6C;
            line-height: 1.6;
        }

        .divider {
            width: 60px;
            height: 3px;
            background: var(--color-accent);
            border-radius: 2px;
            margin: 16px 0;
        }

        .divider-center {
            margin-left: auto;
            margin-right: auto;
        }

/* roulang page: category3 */
:root {
            --color-primary: #0D1B2A;
            --color-primary-light: #152238;
            --color-accent: #00A896;
            --color-accent-dark: #008B7A;
            --color-accent-light: #00B4A6;
            --color-emphasis: #FFB703;
            --color-emphasis-glow: rgba(255, 183, 3, 0.55);
            --color-text: #E0E6ED;
            --color-text-secondary: #8A9BB5;
            --color-text-dark: #1A2B3C;
            --color-bg-light: #F4F6F9;
            --color-card-bg: #FFFFFF;
            --color-border: rgba(0, 0, 0, 0.06);
            --color-border-light: #E2E8F0;
            --color-glass-bg: rgba(13, 27, 42, 0.75);
            --color-glass-border: rgba(255, 255, 255, 0.08);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);
            --shadow-glow: 0 0 20px rgba(0, 168, 150, 0.35);
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --font-mono: 'SF Mono', 'Consolas', 'Monaco', monospace;
            --max-width: 1200px;
            --nav-height: 68px;
            --transition-fast: 0.2s ease;
            --transition-normal: 0.3s ease;
            --transition-slow: 0.5s ease;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-sans);
            line-height: 1.7;
            color: var(--color-text-dark);
            background: #FAFBFC;
            min-height: 100vh;
            overflow-x: hidden;
            letter-spacing: 0.01em;
            margin: 0;
            padding: 0;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            color: var(--color-accent);
            text-decoration: none;
            transition: color var(--transition-fast), text-decoration var(--transition-fast);
        }
        a:hover {
            color: var(--color-accent-dark);
            text-decoration: underline;
        }
        a:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 3px;
            border-radius: 4px;
        }

        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            background: none;
            transition: all var(--transition-fast);
        }
        button:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 3px;
            border-radius: 4px;
        }

        input {
            font-family: inherit;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
        }
        input:focus-visible {
            outline: none;
            border-color: var(--color-accent);
            box-shadow: 0 0 0 3px rgba(0, 168, 150, 0.2);
        }

        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }

        /* ========== HEADER / NAVIGATION ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--nav-height);
            background: var(--color-glass-bg);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--color-glass-border);
            transition: background var(--transition-normal), backdrop-filter var(--transition-normal), box-shadow var(--transition-normal);
        }
        .site-header.glass--solid {
            background: var(--color-primary);
            backdrop-filter: none;
            -webkit-backdrop-filter: none;
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.25);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        .header-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 700;
            color: #FFFFFF;
            letter-spacing: 0.03em;
            white-space: nowrap;
            text-decoration: none;
            flex-shrink: 0;
        }
        .header-logo:hover {
            color: #FFFFFF;
            text-decoration: none;
            opacity: 0.9;
        }
        .header-logo .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--color-accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            color: #fff;
            flex-shrink: 0;
        }
        .header-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            flex-wrap: nowrap;
        }
        .header-nav a {
            display: inline-flex;
            align-items: center;
            padding: 8px 14px;
            border-radius: 6px;
            color: rgba(255, 255, 255, 0.85);
            font-size: 0.9rem;
            font-weight: 500;
            white-space: nowrap;
            transition: all var(--transition-fast);
            text-decoration: none;
        }
        .header-nav a:hover {
            color: #FFFFFF;
            background: rgba(255, 255, 255, 0.08);
            text-decoration: none;
        }
        .header-nav a.active {
            color: #FFFFFF;
            background: rgba(0, 168, 150, 0.25);
            font-weight: 600;
        }
        .header-nav a.nav-cta {
            background: var(--color-accent);
            color: #FFFFFF;
            padding: 9px 18px;
            border-radius: 8px;
            font-weight: 600;
            margin-left: 6px;
            transition: all var(--transition-fast);
        }
        .header-nav a.nav-cta:hover {
            background: var(--color-accent-dark);
            box-shadow: var(--shadow-glow);
            color: #FFFFFF;
            text-decoration: none;
        }
        .hamburger-btn {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            cursor: pointer;
            background: none;
            border: none;
            z-index: 1001;
        }
        .hamburger-btn span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: #FFFFFF;
            border-radius: 2px;
            transition: all var(--transition-fast);
        }
        .hamburger-btn.open span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .hamburger-btn.open span:nth-child(2) {
            opacity: 0;
        }
        .hamburger-btn.open span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        /* ========== HERO ========== */
        .page-hero {
            position: relative;
            min-height: 70vh;
            display: flex;
            align-items: center;
            justify-content: center;
            background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            background-attachment: fixed;
            overflow: hidden;
            margin-top: 0;
            padding-top: var(--nav-height);
        }
        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(13, 27, 42, 0.85) 0%, rgba(13, 27, 42, 0.55) 60%, rgba(13, 27, 42, 0.8) 100%);
            z-index: 1;
        }
        .page-hero .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 800px;
            padding: 40px 20px;
        }
        .page-hero .hero-badge {
            display: inline-block;
            background: var(--color-emphasis);
            color: var(--color-primary);
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 700;
            letter-spacing: 0.04em;
            margin-bottom: 20px;
        }
        .page-hero h1 {
            font-size: 3rem;
            font-weight: 800;
            color: #FFFFFF;
            line-height: 1.2;
            margin: 0 0 20px;
            letter-spacing: 0.02em;
            text-shadow: 0 2px 12px rgba(0, 0, 0, 0.4);
        }
        .page-hero .hero-subtitle {
            font-size: 1.2rem;
            color: rgba(255, 255, 255, 0.8);
            line-height: 1.6;
            margin: 0 0 32px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }
        .page-hero .hero-cta-group {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: 8px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: all var(--transition-fast);
            text-decoration: none;
            border: none;
            font-family: inherit;
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--color-emphasis);
            color: var(--color-primary);
            box-shadow: 0 4px 14px rgba(255, 183, 3, 0.35);
        }
        .btn-primary:hover {
            background: #E5A800;
            box-shadow: 0 6px 22px rgba(255, 183, 3, 0.5);
            transform: translateY(-2px);
            color: var(--color-primary);
            text-decoration: none;
        }
        .btn-outline {
            background: transparent;
            color: #FFFFFF;
            border: 2px solid rgba(255, 255, 255, 0.5);
        }
        .btn-outline:hover {
            border-color: #FFFFFF;
            background: rgba(255, 255, 255, 0.08);
            color: #FFFFFF;
            text-decoration: none;
        }
        .btn-accent {
            background: var(--color-accent);
            color: #FFFFFF;
            box-shadow: 0 4px 14px rgba(0, 168, 150, 0.3);
        }
        .btn-accent:hover {
            background: var(--color-accent-dark);
            box-shadow: 0 6px 22px rgba(0, 168, 150, 0.45);
            transform: translateY(-2px);
            color: #FFFFFF;
            text-decoration: none;
        }

        /* ========== SECTIONS ========== */
        .section {
            padding: 80px 0;
        }
        .section-sm {
            padding: 50px 0;
        }
        .section-dark {
            background: var(--color-primary);
            color: var(--color-text);
        }
        .section-light {
            background: var(--color-bg-light);
        }
        .section-white {
            background: #FFFFFF;
        }
        .section-header {
            text-align: center;
            margin-bottom: 50px;
        }
        .section-header h2 {
            font-size: 2rem;
            font-weight: 700;
            color: var(--color-text-dark);
            margin: 0 0 12px;
            line-height: 1.3;
        }
        .section-dark .section-header h2 {
            color: #FFFFFF;
        }
        .section-header .section-lead {
            font-size: 1.1rem;
            color: var(--color-text-secondary);
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.6;
        }
        .section-dark .section-header .section-lead {
            color: rgba(255, 255, 255, 0.65);
        }

        /* ========== CARDS ========== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
            gap: 24px;
        }
        .card {
            background: var(--color-card-bg);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border);
            overflow: hidden;
            transition: all var(--transition-normal);
            display: flex;
            flex-direction: column;
        }
        .card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
            border-color: rgba(0, 168, 150, 0.2);
        }
        .card-img {
            width: 100%;
            aspect-ratio: 16 / 9;
            object-fit: cover;
            background: #E2E8F0;
            display: block;
        }
        .card-body {
            padding: 20px 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .card-tag {
            display: inline-block;
            font-size: 0.78rem;
            font-weight: 600;
            color: var(--color-accent);
            background: rgba(0, 168, 150, 0.08);
            padding: 4px 10px;
            border-radius: 4px;
            margin-bottom: 10px;
            align-self: flex-start;
        }
        .card-title {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--color-text-dark);
            margin: 0 0 8px;
            line-height: 1.4;
        }
        .card-desc {
            font-size: 0.95rem;
            color: #5A6B7C;
            line-height: 1.6;
            margin: 0 0 16px;
            flex: 1;
        }
        .card-link {
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--color-accent);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            text-decoration: none;
            align-self: flex-start;
            transition: all var(--transition-fast);
        }
        .card-link:hover {
            color: var(--color-accent-dark);
            text-decoration: none;
            gap: 8px;
        }
        .card-link::after {
            content: '→';
            transition: transform var(--transition-fast);
        }
        .card-link:hover::after {
            transform: translateX(3px);
        }

        /* ========== STATS ========== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            text-align: center;
        }
        .stat-item {
            padding: 24px 16px;
            background: rgba(255, 255, 255, 0.04);
            border-radius: var(--radius-md);
            border: 1px solid rgba(255, 255, 255, 0.08);
        }
        .stat-number {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--color-emphasis);
            line-height: 1;
            margin-bottom: 8px;
            font-family: var(--font-mono);
        }
        .stat-label {
            font-size: 0.95rem;
            color: rgba(255, 255, 255, 0.7);
            line-height: 1.4;
        }

        /* ========== FEATURE ROW ========== */
        .feature-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }
        .feature-row.reverse {
            direction: rtl;
        }
        .feature-row.reverse>* {
            direction: ltr;
        }
        .feature-img {
            width: 100%;
            aspect-ratio: 16 / 10;
            object-fit: cover;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
            background: #E2E8F0;
        }
        .feature-text h3 {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--color-text-dark);
            margin: 0 0 14px;
            line-height: 1.3;
        }
        .feature-text p {
            font-size: 1rem;
            color: #5A6B7C;
            line-height: 1.7;
            margin: 0 0 10px;
        }
        .feature-text .feature-list {
            list-style: none;
            padding: 0;
            margin: 16px 0 0;
        }
        .feature-text .feature-list li {
            padding: 6px 0 6px 24px;
            position: relative;
            font-size: 0.95rem;
            color: #4A5B6C;
            line-height: 1.6;
        }
        .feature-text .feature-list li::before {
            content: '';
            position: absolute;
            left: 0;
            top: 13px;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--color-accent);
        }

        /* ========== TIMELINE ========== */
        .timeline-list {
            list-style: none;
            padding: 0;
            margin: 0;
            position: relative;
        }
        .timeline-list::before {
            content: '';
            position: absolute;
            left: 20px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: var(--color-border-light);
            border-radius: 1px;
        }
        .timeline-item {
            position: relative;
            padding-left: 50px;
            margin-bottom: 28px;
        }
        .timeline-item:last-child {
            margin-bottom: 0;
        }
        .timeline-dot {
            position: absolute;
            left: 12px;
            top: 6px;
            width: 18px;
            height: 18px;
            border-radius: 50%;
            background: var(--color-accent);
            border: 3px solid #FFFFFF;
            box-shadow: 0 0 0 3px rgba(0, 168, 150, 0.15);
            z-index: 1;
        }
        .timeline-date {
            font-size: 0.85rem;
            font-weight: 700;
            color: var(--color-accent);
            margin-bottom: 4px;
            letter-spacing: 0.03em;
        }
        .timeline-title {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--color-text-dark);
            margin: 0 0 6px;
        }
        .timeline-desc {
            font-size: 0.9rem;
            color: #5A6B7C;
            line-height: 1.6;
            margin: 0;
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--color-card-bg);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border);
            margin-bottom: 12px;
            overflow: hidden;
            transition: all var(--transition-fast);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 22px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-text-dark);
            background: none;
            border: none;
            cursor: pointer;
            text-align: left;
            line-height: 1.5;
            font-family: inherit;
            transition: background var(--transition-fast);
        }
        .faq-question:hover {
            background: rgba(0, 168, 150, 0.03);
        }
        .faq-arrow {
            flex-shrink: 0;
            width: 22px;
            height: 22px;
            transition: transform var(--transition-normal);
            color: var(--color-accent);
            font-size: 1.1rem;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .faq-item.open .faq-arrow {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-slow);
            padding: 0 22px;
        }
        .faq-item.open .faq-answer {
            max-height: 500px;
            padding: 0 22px 20px;
        }
        .faq-answer p {
            margin: 0;
            font-size: 0.95rem;
            color: #5A6B7C;
            line-height: 1.7;
        }

        /* ========== CTA ========== */
        .cta-section {
            background: var(--color-primary);
            padding: 80px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at center, rgba(0, 168, 150, 0.12) 0%, transparent 70%);
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
        }
        .cta-section h2 {
            font-size: 2rem;
            font-weight: 700;
            color: #FFFFFF;
            margin: 0 0 12px;
        }
        .cta-section .cta-desc {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.7);
            margin: 0 0 28px;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
            line-height: 1.6;
        }
        .cta-form {
            display: flex;
            gap: 10px;
            max-width: 480px;
            margin: 0 auto;
            flex-wrap: wrap;
            justify-content: center;
        }
        .cta-form input {
            flex: 1;
            min-width: 220px;
            padding: 13px 16px;
            border-radius: 8px;
            border: 1px solid rgba(255, 255, 255, 0.2);
            background: rgba(255, 255, 255, 0.06);
            color: #FFFFFF;
            font-size: 0.95rem;
        }
        .cta-form input::placeholder {
            color: rgba(255, 255, 255, 0.45);
        }
        .cta-form input:focus {
            border-color: var(--color-accent);
            box-shadow: 0 0 0 3px rgba(0, 168, 150, 0.25);
            outline: none;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: #0A1520;
            color: rgba(255, 255, 255, 0.7);
            padding: 50px 0 30px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 30px;
            margin-bottom: 30px;
        }
        .footer-grid h4 {
            color: #FFFFFF;
            font-size: 1rem;
            font-weight: 700;
            margin: 0 0 14px;
            letter-spacing: 0.02em;
        }
        .footer-grid a {
            display: block;
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.9rem;
            padding: 4px 0;
            transition: color var(--transition-fast);
            text-decoration: none;
        }
        .footer-grid a:hover {
            color: var(--color-accent-light);
            text-decoration: none;
        }
        .footer-social-icons {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }
        .footer-social-icons a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            font-size: 1.1rem;
            transition: all var(--transition-fast);
            text-decoration: none;
        }
        .footer-social-icons a:hover {
            background: rgba(0, 168, 150, 0.2);
            color: var(--color-accent-light);
            text-decoration: none;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.4);
            justify-content: center;
            text-align: center;
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        .footer-bottom a:hover {
            color: var(--color-accent-light);
            text-decoration: none;
        }
        .footer-bottom span {
            white-space: nowrap;
        }

        /* ========== BREADCRUMB ========== */
        .breadcrumb {
            display: flex;
            gap: 8px;
            align-items: center;
            font-size: 0.85rem;
            color: var(--color-text-secondary);
            padding: 16px 0;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--color-accent);
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .breadcrumb .separator {
            color: #CBD5E1;
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .header-nav a {
                padding: 6px 10px;
                font-size: 0.82rem;
            }
            .page-hero h1 {
                font-size: 2.4rem;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .feature-row {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .card-grid {
                grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            }
        }

        @media (max-width: 768px) {
            .header-nav {
                display: none;
                position: fixed;
                top: 0;
                left: 0;
                right: 0;
                bottom: 0;
                background: rgba(13, 27, 42, 0.96);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                flex-direction: column;
                align-items: center;
                justify-content: center;
                gap: 8px;
                z-index: 999;
                padding: 80px 20px 40px;
            }
            .header-nav.open {
                display: flex;
            }
            .header-nav a {
                font-size: 1.1rem;
                padding: 12px 20px;
                width: 100%;
                text-align: center;
                justify-content: center;
            }
            .hamburger-btn {
                display: flex;
            }
            .page-hero {
                min-height: 60vh;
                background-attachment: scroll;
            }
            .page-hero h1 {
                font-size: 1.9rem;
            }
            .page-hero .hero-subtitle {
                font-size: 1rem;
            }
            .section {
                padding: 50px 0;
            }
            .section-header h2 {
                font-size: 1.5rem;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-number {
                font-size: 2rem;
            }
            .card-grid {
                grid-template-columns: 1fr;
            }
            .feature-row {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
                text-align: center;
            }
            .footer-social-icons {
                justify-content: center;
            }
            .cta-form {
                flex-direction: column;
                align-items: center;
            }
            .cta-form input {
                width: 100%;
                max-width: 360px;
            }
            .timeline-list::before {
                left: 14px;
            }
            .timeline-item {
                padding-left: 38px;
            }
            .timeline-dot {
                left: 6px;
                width: 16px;
                height: 16px;
            }
            .btn {
                padding: 11px 22px;
                font-size: 0.9rem;
            }
        }

        @media (max-width: 520px) {
            .page-hero h1 {
                font-size: 1.55rem;
            }
            .page-hero .hero-subtitle {
                font-size: 0.9rem;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 8px;
            }
            .stat-number {
                font-size: 1.6rem;
            }
            .stat-label {
                font-size: 0.8rem;
            }
            .section-header h2 {
                font-size: 1.3rem;
            }
            .hero-cta-group {
                flex-direction: column;
                align-items: center;
            }
            .hero-cta-group .btn {
                width: 100%;
                max-width: 280px;
                justify-content: center;
            }
            .footer-bottom {
                flex-direction: column;
                gap: 8px;
                align-items: center;
            }
        }

/* roulang page: category4 */
:root {
            --color-primary: #0D1B2A;
            --color-primary-light: #152238;
            --color-accent: #00A896;
            --color-accent-dark: #008B7A;
            --color-accent-light: #00B4A6;
            --color-emphasis: #FFB703;
            --color-emphasis-glow: rgba(255, 183, 3, 0.55);
            --color-text: #E0E6ED;
            --color-text-secondary: #8A9BB5;
            --color-text-dark: #1A2B3C;
            --color-bg-light: #F4F6F9;
            --color-card-bg: #FFFFFF;
            --color-border: rgba(0, 0, 0, 0.06);
            --color-border-light: #E2E8F0;
            --color-glass-bg: rgba(13, 27, 42, 0.75);
            --color-glass-border: rgba(255, 255, 255, 0.08);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);
            --shadow-glow: 0 0 20px rgba(0, 168, 150, 0.35);
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --font-mono: 'SF Mono', 'Consolas', 'Monaco', monospace;
            --max-width: 1200px;
            --nav-height: 68px;
            --transition-fast: 0.2s ease;
            --transition-normal: 0.3s ease;
            --transition-slow: 0.5s ease;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-sans);
            line-height: 1.7;
            color: var(--color-text-dark);
            background: #FAFBFC;
            min-height: 100vh;
            overflow-x: hidden;
            letter-spacing: 0.01em;
            padding-top: var(--nav-height);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            color: var(--color-accent);
            text-decoration: none;
            transition: color var(--transition-fast), text-decoration var(--transition-fast);
        }

        a:hover {
            color: var(--color-accent-dark);
            text-decoration: underline;
        }

        a:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 3px;
            border-radius: 4px;
        }

        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            background: none;
            transition: all var(--transition-fast);
        }

        button:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 3px;
            border-radius: 4px;
        }

        input {
            font-family: inherit;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
        }

        input:focus-visible {
            outline: none;
            border-color: var(--color-accent);
            box-shadow: 0 0 0 3px rgba(0, 168, 150, 0.2);
        }

        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }

        /* ========== HEADER / NAVIGATION ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--nav-height);
            background: var(--color-glass-bg);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--color-glass-border);
            transition: background var(--transition-normal), backdrop-filter var(--transition-normal), box-shadow var(--transition-normal);
        }

        .site-header.glass--solid {
            background: var(--color-primary);
            backdrop-filter: none;
            -webkit-backdrop-filter: none;
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.25);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }

        .header-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 700;
            color: #FFFFFF;
            letter-spacing: 0.03em;
            white-space: nowrap;
            text-decoration: none;
            flex-shrink: 0;
        }

        .header-logo:hover {
            color: #FFFFFF;
            text-decoration: none;
            opacity: 0.9;
        }

        .header-logo .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--color-accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            color: #fff;
            flex-shrink: 0;
        }

        .header-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            flex-wrap: nowrap;
        }

        .header-nav a {
            display: inline-flex;
            align-items: center;
            padding: 8px 14px;
            border-radius: 6px;
            color: rgba(255, 255, 255, 0.85);
            font-size: 0.9rem;
            font-weight: 500;
            white-space: nowrap;
            transition: all var(--transition-fast);
            text-decoration: none;
        }

        .header-nav a:hover {
            background: rgba(255, 255, 255, 0.1);
            color: #FFFFFF;
            text-decoration: none;
        }

        .header-nav a.active {
            background: var(--color-accent);
            color: #FFFFFF;
            font-weight: 600;
        }

        .header-nav a.nav-cta {
            background: var(--color-emphasis);
            color: #1A2B3C;
            font-weight: 600;
            padding: 8px 18px;
            border-radius: 20px;
            margin-left: 8px;
        }

        .header-nav a.nav-cta:hover {
            background: #FFC940;
            color: #1A2B3C;
            box-shadow: 0 0 14px var(--color-emphasis-glow);
            text-decoration: none;
        }

        .hamburger-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            padding: 8px;
            z-index: 1001;
            background: none;
            border: none;
        }

        .hamburger-toggle span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: #FFFFFF;
            border-radius: 2px;
            transition: all var(--transition-fast);
        }

        /* ========== HERO SECTION ========== */
        .category-hero {
            position: relative;
            min-height: 520px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--color-primary) url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            overflow: hidden;
        }

        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(13, 27, 42, 0.82) 0%, rgba(13, 27, 42, 0.55) 60%, rgba(13, 27, 42, 0.78) 100%);
            z-index: 1;
        }

        .category-hero .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 750px;
            padding: 40px 20px;
        }

        .category-hero .hero-badge {
            display: inline-block;
            background: var(--color-emphasis);
            color: #1A2B3C;
            font-weight: 700;
            font-size: 0.85rem;
            padding: 6px 16px;
            border-radius: 20px;
            letter-spacing: 0.04em;
            margin-bottom: 20px;
        }

        .category-hero h1 {
            font-size: 2.8rem;
            font-weight: 800;
            color: #FFFFFF;
            line-height: 1.2;
            margin-bottom: 16px;
            letter-spacing: 0.02em;
            text-shadow: 0 2px 12px rgba(0, 0, 0, 0.35);
        }

        .category-hero .hero-subtitle {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: 32px;
            line-height: 1.6;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        .hero-search-box {
            display: flex;
            max-width: 520px;
            margin: 0 auto 28px;
            background: #FFFFFF;
            border-radius: 30px;
            overflow: hidden;
            box-shadow: 0 6px 28px rgba(0, 0, 0, 0.3);
        }

        .hero-search-box input {
            flex: 1;
            border: none;
            padding: 14px 22px;
            font-size: 1rem;
            color: var(--color-text-dark);
            background: transparent;
            outline: none;
        }

        .hero-search-box input::placeholder {
            color: #9CA3AF;
        }

        .hero-search-box button {
            background: var(--color-accent);
            color: #FFFFFF;
            padding: 14px 24px;
            font-weight: 600;
            font-size: 0.95rem;
            white-space: nowrap;
            border-radius: 0 30px 30px 0;
            transition: all var(--transition-fast);
        }

        .hero-search-box button:hover {
            background: var(--color-accent-dark);
        }

        .hero-hot-tags {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 10px;
            max-width: 600px;
            margin: 0 auto;
        }

        .hero-hot-tags a {
            display: inline-block;
            padding: 7px 16px;
            border-radius: 20px;
            background: rgba(255, 255, 255, 0.12);
            color: rgba(255, 255, 255, 0.9);
            font-size: 0.85rem;
            font-weight: 500;
            border: 1px solid rgba(255, 255, 255, 0.18);
            transition: all var(--transition-fast);
            text-decoration: none;
        }

        .hero-hot-tags a:hover {
            background: rgba(255, 255, 255, 0.22);
            color: #FFFFFF;
            border-color: rgba(255, 255, 255, 0.4);
            text-decoration: none;
            transform: translateY(-2px);
        }

        /* ========== SECTIONS ========== */
        .section {
            padding: 70px 0;
        }

        .section-alt {
            background: var(--color-bg-light);
        }

        .section-dark {
            background: var(--color-primary);
            color: var(--color-text);
        }

        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }

        .section-header h2 {
            font-size: 2rem;
            font-weight: 700;
            color: var(--color-text-dark);
            margin-bottom: 10px;
            letter-spacing: 0.02em;
        }

        .section-dark .section-header h2 {
            color: #FFFFFF;
        }

        .section-header .section-desc {
            color: var(--color-text-secondary);
            font-size: 1rem;
            max-width: 600px;
            margin: 0 auto;
        }

        .section-dark .section-header .section-desc {
            color: rgba(255, 255, 255, 0.6);
        }

        /* ========== CARDS GRID ========== */
        .cards-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .card {
            background: var(--color-card-bg);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border);
            transition: all var(--transition-normal);
            display: flex;
            flex-direction: column;
        }

        .card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: rgba(0, 168, 150, 0.25);
        }

        .card-img {
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
            background: #E2E8F0;
        }

        .card-body {
            padding: 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .card-date {
            font-size: 0.8rem;
            color: var(--color-text-secondary);
            margin-bottom: 8px;
            font-family: var(--font-mono);
        }

        .card-title {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--color-text-dark);
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .card-summary {
            font-size: 0.9rem;
            color: #5A6B7F;
            line-height: 1.55;
            flex: 1;
            margin-bottom: 14px;
        }

        .card-link {
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--color-accent);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: all var(--transition-fast);
            text-decoration: none;
        }

        .card-link:hover {
            color: var(--color-accent-dark);
            gap: 8px;
            text-decoration: none;
        }

        .card-link::after {
            content: '→';
            transition: transform var(--transition-fast);
        }

        .card-link:hover::after {
            transform: translateX(3px);
        }

        /* ========== FEATURED BLOCK ========== */
        .featured-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .featured-block.reverse {
            direction: rtl;
        }

        .featured-block.reverse>* {
            direction: ltr;
        }

        .featured-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            aspect-ratio: 4/3;
            background: #E2E8F0;
        }

        .featured-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .featured-text h3 {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--color-text-dark);
            margin-bottom: 14px;
            line-height: 1.35;
        }

        .featured-text p {
            color: #4A5B6F;
            line-height: 1.75;
            margin-bottom: 12px;
            font-size: 0.98rem;
        }

        .featured-text .btn-outline {
            display: inline-block;
            margin-top: 8px;
            padding: 10px 24px;
            border: 1.5px solid var(--color-accent);
            color: var(--color-accent);
            border-radius: 24px;
            font-weight: 600;
            font-size: 0.9rem;
            transition: all var(--transition-fast);
            text-decoration: none;
        }

        .featured-text .btn-outline:hover {
            background: var(--color-accent);
            color: #FFFFFF;
            text-decoration: none;
            box-shadow: var(--shadow-glow);
        }

        /* ========== STATS ROW ========== */
        .stats-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            text-align: center;
        }

        .stat-item {
            background: rgba(255, 255, 255, 0.06);
            border-radius: var(--radius-md);
            padding: 28px 20px;
            border: 1px solid rgba(255, 255, 255, 0.08);
            transition: all var(--transition-normal);
        }

        .stat-item:hover {
            background: rgba(255, 255, 255, 0.12);
            transform: translateY(-3px);
        }

        .stat-number {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--color-emphasis);
            line-height: 1;
            margin-bottom: 8px;
            font-family: var(--font-mono);
        }

        .stat-label {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.65);
            font-weight: 500;
        }

        /* ========== TIMELINE ========== */
        .timeline-list {
            list-style: none;
            position: relative;
            padding-left: 32px;
        }

        .timeline-list::before {
            content: '';
            position: absolute;
            left: 14px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: var(--color-border-light);
            border-radius: 1px;
        }

        .timeline-item {
            position: relative;
            margin-bottom: 28px;
            padding: 16px 20px;
            background: var(--color-card-bg);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border);
            transition: all var(--transition-fast);
        }

        .timeline-item:hover {
            box-shadow: var(--shadow-md);
            border-color: rgba(0, 168, 150, 0.2);
        }

        .timeline-item::before {
            content: '';
            position: absolute;
            left: -24px;
            top: 22px;
            width: 12px;
            height: 12px;
            background: var(--color-accent);
            border-radius: 50%;
            border: 3px solid #FFFFFF;
            box-shadow: 0 0 0 2px var(--color-accent);
        }

        .timeline-date {
            font-size: 0.8rem;
            color: var(--color-accent);
            font-weight: 600;
            font-family: var(--font-mono);
            margin-bottom: 4px;
        }

        .timeline-title {
            font-weight: 700;
            font-size: 1.05rem;
            color: var(--color-text-dark);
            margin-bottom: 4px;
        }

        .timeline-desc {
            font-size: 0.9rem;
            color: #5A6B7F;
            line-height: 1.5;
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--color-card-bg);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            border: 1px solid var(--color-border);
            overflow: hidden;
            transition: all var(--transition-fast);
        }

        .faq-item:hover {
            box-shadow: var(--shadow-sm);
        }

        .faq-question {
            width: 100%;
            text-align: left;
            padding: 18px 22px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-text-dark);
            display: flex;
            justify-content: space-between;
            align-items: center;
            background: none;
            border: none;
            cursor: pointer;
            transition: background var(--transition-fast);
        }

        .faq-question:hover {
            background: #F8FAFB;
        }

        .faq-arrow {
            flex-shrink: 0;
            width: 22px;
            height: 22px;
            transition: transform var(--transition-normal);
            color: var(--color-accent);
            font-size: 1.1rem;
        }

        .faq-item.open .faq-arrow {
            transform: rotate(180deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-slow);
            padding: 0 22px;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 22px 18px;
        }

        .faq-answer p {
            color: #4A5B6F;
            line-height: 1.7;
            font-size: 0.95rem;
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            background: linear-gradient(135deg, var(--color-primary) 0%, #0F2235 100%);
            padding: 70px 0;
            text-align: center;
        }

        .cta-section h2 {
            font-size: 2rem;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 12px;
        }

        .cta-section p {
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 28px;
            font-size: 1.05rem;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
        }

        .cta-form {
            display: flex;
            max-width: 480px;
            margin: 0 auto;
            gap: 10px;
        }

        .cta-form input {
            flex: 1;
            padding: 13px 20px;
            border-radius: 28px;
            border: 1px solid rgba(255, 255, 255, 0.25);
            background: rgba(255, 255, 255, 0.08);
            color: #FFFFFF;
            font-size: 1rem;
            outline: none;
        }

        .cta-form input::placeholder {
            color: rgba(255, 255, 255, 0.45);
        }

        .cta-form input:focus {
            border-color: var(--color-accent);
            box-shadow: 0 0 0 3px rgba(0, 168, 150, 0.25);
            background: rgba(255, 255, 255, 0.14);
        }

        .cta-form button {
            padding: 13px 28px;
            border-radius: 28px;
            background: var(--color-emphasis);
            color: #1A2B3C;
            font-weight: 700;
            font-size: 1rem;
            white-space: nowrap;
            transition: all var(--transition-fast);
        }

        .cta-form button:hover {
            background: #FFC940;
            box-shadow: 0 0 20px var(--color-emphasis-glow);
            transform: translateY(-1px);
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--color-primary);
            color: rgba(255, 255, 255, 0.7);
            padding: 50px 0 24px;
            font-size: 0.9rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }

        .footer-grid h4 {
            color: #FFFFFF;
            font-weight: 600;
            margin-bottom: 14px;
            font-size: 1rem;
        }

        .footer-grid a {
            display: block;
            color: rgba(255, 255, 255, 0.6);
            padding: 4px 0;
            font-size: 0.88rem;
            transition: color var(--transition-fast);
            text-decoration: none;
        }

        .footer-grid a:hover {
            color: #FFFFFF;
            text-decoration: none;
        }

        .footer-social-icons {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        .footer-social-icons a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            font-size: 1.1rem;
            transition: all var(--transition-fast);
            text-decoration: none;
        }

        .footer-social-icons a:hover {
            background: var(--color-accent);
            transform: translateY(-2px);
            text-decoration: none;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 18px;
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: space-between;
            align-items: center;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.45);
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
            text-decoration: none;
        }

        .footer-bottom a:hover {
            color: #FFFFFF;
            text-decoration: underline;
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .cards-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .featured-block {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .featured-block.reverse {
                direction: ltr;
            }
            .stats-row {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .category-hero h1 {
                font-size: 2.2rem;
            }
            .header-nav a {
                padding: 6px 10px;
                font-size: 0.82rem;
            }
        }

        @media (max-width: 768px) {
            .cards-grid {
                grid-template-columns: 1fr;
            }
            .stats-row {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-number {
                font-size: 2rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }
            .category-hero {
                min-height: 400px;
            }
            .category-hero h1 {
                font-size: 1.8rem;
            }
            .category-hero .hero-subtitle {
                font-size: 1rem;
            }
            .hero-search-box {
                flex-direction: column;
                border-radius: var(--radius-md);
            }
            .hero-search-box input {
                border-radius: var(--radius-md) var(--radius-md) 0 0;
            }
            .hero-search-box button {
                border-radius: 0 0 var(--radius-md) var(--radius-md);
                text-align: center;
            }
            .section {
                padding: 48px 0;
            }
            .section-header h2 {
                font-size: 1.5rem;
            }
            .cta-form {
                flex-direction: column;
                padding: 0 20px;
            }
            .cta-form button {
                border-radius: 28px;
            }
            .header-nav {
                position: fixed;
                top: 0;
                right: -100%;
                width: 280px;
                height: 100vh;
                background: var(--color-primary);
                flex-direction: column;
                align-items: flex-start;
                padding: 90px 24px 30px;
                gap: 6px;
                transition: right var(--transition-normal);
                box-shadow: -4px 0 24px rgba(0, 0, 0, 0.4);
                z-index: 999;
            }
            .header-nav.mobile-open {
                right: 0;
            }
            .header-nav a {
                width: 100%;
                padding: 12px 16px;
                font-size: 1rem;
                border-radius: 8px;
            }
            .header-nav a.nav-cta {
                margin-left: 0;
                text-align: center;
                justify-content: center;
                margin-top: 8px;
            }
            .hamburger-toggle {
                display: flex;
            }
            .timeline-list {
                padding-left: 24px;
            }
            .timeline-item::before {
                left: -18px;
                width: 10px;
                height: 10px;
            }
        }

        @media (max-width: 520px) {
            .category-hero h1 {
                font-size: 1.5rem;
            }
            .hero-hot-tags a {
                font-size: 0.78rem;
                padding: 5px 12px;
            }
            .stats-row {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .stat-item {
                padding: 20px 14px;
            }
            .stat-number {
                font-size: 1.7rem;
            }
            .featured-text h3 {
                font-size: 1.3rem;
            }
        }

/* roulang page: category5 */
:root {
            --color-primary: #0D1B2A;
            --color-primary-light: #152238;
            --color-accent: #00A896;
            --color-accent-dark: #008B7A;
            --color-accent-light: #00B4A6;
            --color-emphasis: #FFB703;
            --color-emphasis-glow: rgba(255, 183, 3, 0.55);
            --color-text: #E0E6ED;
            --color-text-secondary: #8A9BB5;
            --color-text-dark: #1A2B3C;
            --color-bg-light: #F4F6F9;
            --color-card-bg: #FFFFFF;
            --color-border: rgba(0, 0, 0, 0.06);
            --color-border-light: #E2E8F0;
            --color-glass-bg: rgba(13, 27, 42, 0.75);
            --color-glass-border: rgba(255, 255, 255, 0.08);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);
            --shadow-glow: 0 0 20px rgba(0, 168, 150, 0.35);
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --font-mono: 'SF Mono', 'Consolas', 'Monaco', monospace;
            --max-width: 1200px;
            --nav-height: 68px;
            --transition-fast: 0.2s ease;
            --transition-normal: 0.3s ease;
            --transition-slow: 0.5s ease;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-sans);
            line-height: 1.7;
            color: var(--color-text-dark);
            background: #FAFBFC;
            min-height: 100vh;
            overflow-x: hidden;
            letter-spacing: 0.01em;
            padding-top: var(--nav-height);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            color: var(--color-accent);
            text-decoration: none;
            transition: color var(--transition-fast), text-decoration var(--transition-fast);
        }

        a:hover {
            color: var(--color-accent-dark);
            text-decoration: underline;
        }

        a:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 3px;
            border-radius: 4px;
        }

        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            background: none;
            transition: all var(--transition-fast);
        }

        button:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 3px;
            border-radius: 4px;
        }

        input {
            font-family: inherit;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
        }

        input:focus-visible {
            outline: none;
            border-color: var(--color-accent);
            box-shadow: 0 0 0 3px rgba(0, 168, 150, 0.2);
        }

        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }

        /* ========== HEADER / NAVIGATION ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--nav-height);
            background: var(--color-glass-bg);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--color-glass-border);
            transition: background var(--transition-normal), backdrop-filter var(--transition-normal), box-shadow var(--transition-normal);
        }

        .site-header.glass--solid {
            background: var(--color-primary);
            backdrop-filter: none;
            -webkit-backdrop-filter: none;
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.25);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }

        .header-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 700;
            color: #FFFFFF;
            letter-spacing: 0.03em;
            white-space: nowrap;
            text-decoration: none;
            flex-shrink: 0;
        }

        .header-logo:hover {
            color: #FFFFFF;
            text-decoration: none;
            opacity: 0.9;
        }

        .header-logo .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--color-accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            color: #fff;
            flex-shrink: 0;
        }

        .header-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            flex-wrap: nowrap;
        }

        .header-nav a {
            display: inline-flex;
            align-items: center;
            padding: 8px 14px;
            border-radius: 6px;
            color: rgba(255, 255, 255, 0.85);
            font-size: 0.9rem;
            font-weight: 500;
            white-space: nowrap;
            transition: all var(--transition-fast);
            text-decoration: none;
        }

        .header-nav a:hover {
            background: rgba(255, 255, 255, 0.1);
            color: #FFFFFF;
            text-decoration: none;
        }

        .header-nav a.active {
            background: rgba(0, 168, 150, 0.25);
            color: #FFFFFF;
            font-weight: 600;
        }

        .header-nav .nav-cta {
            background: var(--color-accent);
            color: #FFFFFF;
            padding: 9px 18px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            margin-left: 8px;
        }

        .header-nav .nav-cta:hover {
            background: var(--color-accent-dark);
            color: #FFFFFF;
            box-shadow: var(--shadow-glow);
        }

        .hamburger-btn {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            cursor: pointer;
            z-index: 1001;
            background: none;
            border: none;
        }

        .hamburger-btn span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: #FFFFFF;
            border-radius: 2px;
            transition: all var(--transition-fast);
        }

        .hamburger-btn.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }

        .hamburger-btn.active span:nth-child(2) {
            opacity: 0;
        }

        .hamburger-btn.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        /* ========== HERO - 白皮书获客 ========== */
        .hero-whitepaper {
            position: relative;
            min-height: 620px;
            display: flex;
            align-items: center;
            background: var(--color-primary);
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            overflow: hidden;
        }

        .hero-whitepaper::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(13, 27, 42, 0.92) 0%, rgba(13, 27, 42, 0.7) 50%, rgba(13, 27, 42, 0.55) 100%);
            z-index: 1;
        }

        .hero-whitepaper .container {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            gap: 50px;
            align-items: center;
        }

        .whitepaper-cover {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 16px;
        }

        .whitepaper-cover .cover-image-wrap {
            position: relative;
            width: 280px;
            height: 370px;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: 0 20px 50px rgba(0, 0, 0, 0.45);
            border: 3px solid rgba(255, 255, 255, 0.15);
            background: #1a2b3c;
        }

        .whitepaper-cover .cover-image-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .whitepaper-cover .cover-badge {
            display: inline-block;
            background: var(--color-emphasis);
            color: #1A1A1A;
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 700;
            letter-spacing: 0.04em;
        }

        .whitepaper-info {
            color: #FFFFFF;
        }

        .whitepaper-info .wp-label {
            display: inline-block;
            background: rgba(0, 168, 150, 0.25);
            color: var(--color-accent-light);
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.03em;
            margin-bottom: 16px;
        }

        .whitepaper-info h1 {
            font-size: 2.6rem;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 12px;
            color: #FFFFFF;
            letter-spacing: 0.02em;
        }

        .whitepaper-info h1 span {
            color: var(--color-emphasis);
        }

        .whitepaper-info .wp-subtitle {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: 20px;
            line-height: 1.6;
        }

        .whitepaper-toc {
            background: rgba(255, 255, 255, 0.07);
            border-radius: var(--radius-md);
            padding: 18px 22px;
            margin-bottom: 22px;
            border: 1px solid rgba(255, 255, 255, 0.1);
        }

        .whitepaper-toc h4 {
            color: var(--color-accent-light);
            font-size: 0.9rem;
            font-weight: 700;
            margin-bottom: 10px;
            letter-spacing: 0.04em;
            text-transform: uppercase;
        }

        .whitepaper-toc ul {
            list-style: none;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 6px 16px;
        }

        .whitepaper-toc ul li {
            color: rgba(255, 255, 255, 0.75);
            font-size: 0.88rem;
            padding-left: 16px;
            position: relative;
            line-height: 1.5;
        }

        .whitepaper-toc ul li::before {
            content: '';
            position: absolute;
            left: 0;
            top: 8px;
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--color-accent);
        }

        .whitepaper-form {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
        }

        .whitepaper-form input {
            flex: 1;
            min-width: 220px;
            padding: 13px 18px;
            border-radius: var(--radius-sm);
            border: 1.5px solid rgba(255, 255, 255, 0.25);
            background: rgba(255, 255, 255, 0.1);
            color: #FFFFFF;
            font-size: 0.95rem;
            backdrop-filter: blur(4px);
        }

        .whitepaper-form input::placeholder {
            color: rgba(255, 255, 255, 0.5);
        }

        .whitepaper-form input:focus {
            border-color: var(--color-accent);
            background: rgba(255, 255, 255, 0.16);
            box-shadow: 0 0 0 3px rgba(0, 168, 150, 0.25);
        }

        .whitepaper-form .btn-download {
            padding: 13px 28px;
            background: var(--color-emphasis);
            color: #1A1A1A;
            font-weight: 700;
            font-size: 0.95rem;
            border-radius: var(--radius-sm);
            white-space: nowrap;
            border: none;
            cursor: pointer;
            transition: all var(--transition-fast);
            letter-spacing: 0.02em;
        }

        .whitepaper-form .btn-download:hover {
            background: #FFC940;
            box-shadow: 0 0 18px var(--color-emphasis-glow);
            transform: translateY(-1px);
        }

        /* ========== SECTION COMMON ========== */
        .section {
            padding: 80px 0;
        }

        .section-dark {
            background: var(--color-primary);
            color: var(--color-text);
        }

        .section-light {
            background: var(--color-bg-light);
        }

        .section-white {
            background: #FFFFFF;
        }

        .section-label {
            display: inline-block;
            font-size: 0.82rem;
            font-weight: 700;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            color: var(--color-accent);
            margin-bottom: 8px;
        }

        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--color-text-dark);
            margin-bottom: 12px;
            line-height: 1.3;
            letter-spacing: 0.02em;
        }

        .section-dark .section-title {
            color: #FFFFFF;
        }

        .section-desc {
            font-size: 1.05rem;
            color: var(--color-text-secondary);
            max-width: 700px;
            line-height: 1.7;
        }

        .section-dark .section-desc {
            color: rgba(255, 255, 255, 0.7);
        }

        /* ========== PAIN POINTS ========== */
        .pain-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-top: 40px;
        }

        .pain-card {
            background: #FFFFFF;
            border-radius: var(--radius-md);
            padding: 28px 24px;
            border: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-normal);
            border-left: 4px solid transparent;
        }

        .pain-card:hover {
            box-shadow: var(--shadow-md);
            border-left-color: var(--color-accent);
            transform: translateY(-3px);
        }

        .pain-card .pain-icon {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: rgba(0, 168, 150, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            margin-bottom: 14px;
        }

        .pain-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--color-text-dark);
            margin-bottom: 8px;
        }

        .pain-card p {
            font-size: 0.92rem;
            color: #5A6B7C;
            line-height: 1.6;
        }

        /* ========== SOLUTION ========== */
        .solution-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
            margin-top: 40px;
        }

        .solution-block.reverse {
            direction: rtl;
        }

        .solution-block.reverse>* {
            direction: ltr;
        }

        .solution-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            aspect-ratio: 16/10;
        }

        .solution-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .solution-text h3 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--color-text-dark);
            margin-bottom: 12px;
        }

        .solution-text p {
            font-size: 1rem;
            color: #5A6B7C;
            line-height: 1.75;
            margin-bottom: 10px;
        }

        .solution-text .highlight-stat {
            display: inline-flex;
            align-items: baseline;
            gap: 6px;
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--color-accent);
            margin: 8px 0;
        }

        .solution-text .highlight-stat small {
            font-size: 0.9rem;
            font-weight: 500;
            color: #5A6B7C;
        }

        /* ========== RESULTS / STATS ========== */
        .stats-strip {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 40px;
        }

        .stat-card {
            text-align: center;
            padding: 28px 16px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: var(--radius-md);
            border: 1px solid rgba(255, 255, 255, 0.1);
            transition: all var(--transition-normal);
        }

        .stat-card:hover {
            background: rgba(255, 255, 255, 0.12);
            transform: translateY(-2px);
        }

        .stat-card .stat-number {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--color-emphasis);
            line-height: 1.1;
            letter-spacing: 0.02em;
        }

        .stat-card .stat-label {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 6px;
        }

        /* ========== DEEP CONTENT ========== */
        .deep-content-block {
            display: grid;
            grid-template-columns: 1fr 1.1fr;
            gap: 40px;
            align-items: start;
            margin-top: 40px;
            background: #FFFFFF;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
        }

        .deep-content-block .dc-image {
            aspect-ratio: 4/3;
            overflow: hidden;
            min-height: 100%;
        }

        .deep-content-block .dc-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .deep-content-block .dc-body {
            padding: 32px 28px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .deep-content-block .dc-body .dc-tag {
            display: inline-block;
            font-size: 0.78rem;
            font-weight: 700;
            color: var(--color-accent);
            background: rgba(0, 168, 150, 0.08);
            padding: 4px 12px;
            border-radius: 14px;
            margin-bottom: 10px;
            letter-spacing: 0.03em;
        }

        .deep-content-block .dc-body h3 {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--color-text-dark);
            margin-bottom: 10px;
            line-height: 1.4;
        }

        .deep-content-block .dc-body p {
            font-size: 0.95rem;
            color: #5A6B7C;
            line-height: 1.7;
            margin-bottom: 14px;
        }

        .deep-content-block .dc-body .dc-link {
            font-weight: 600;
            color: var(--color-accent);
            font-size: 0.9rem;
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: gap var(--transition-fast);
        }

        .deep-content-block .dc-body .dc-link:hover {
            gap: 8px;
            text-decoration: none;
            color: var(--color-accent-dark);
        }

        .deep-content-alt {
            background: var(--color-bg-light);
            border-radius: var(--radius-lg);
            padding: 40px;
            margin-top: 40px;
        }

        .deep-content-alt h3 {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--color-text-dark);
            margin-bottom: 14px;
        }

        .deep-content-alt p {
            font-size: 1rem;
            color: #5A6B7C;
            line-height: 1.8;
            max-width: 800px;
        }

        .deep-content-alt .info-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 12px 24px;
            margin-top: 18px;
            list-style: none;
        }

        .deep-content-alt .info-list li {
            padding: 8px 0;
            padding-left: 20px;
            position: relative;
            font-size: 0.95rem;
            color: #3A4B5C;
            border-bottom: 1px dashed var(--color-border-light);
        }

        .deep-content-alt .info-list li::before {
            content: '';
            position: absolute;
            left: 0;
            top: 14px;
            width: 8px;
            height: 8px;
            border-radius: 2px;
            background: var(--color-accent);
        }

        /* ========== TESTIMONIALS ========== */
        .testimonial-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-top: 40px;
        }

        .testimonial-card {
            background: #FFFFFF;
            border-radius: var(--radius-md);
            padding: 28px 22px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-normal);
            text-align: center;
        }

        .testimonial-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }

        .testimonial-card .t-avatar {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: #E2E8F0;
            margin: 0 auto 14px;
            overflow: hidden;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: var(--color-accent);
            font-weight: 700;
        }

        .testimonial-card .t-avatar img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .testimonial-card .t-quote {
            font-size: 0.95rem;
            color: #4A5B6C;
            line-height: 1.6;
            font-style: italic;
            margin-bottom: 12px;
        }

        .testimonial-card .t-name {
            font-weight: 700;
            font-size: 0.9rem;
            color: var(--color-text-dark);
        }

        .testimonial-card .t-role {
            font-size: 0.8rem;
            color: #8A9BB5;
        }

        /* ========== FAQ ========== */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            margin-top: 36px;
            max-width: 800px;
        }

        .faq-item {
            background: #FFFFFF;
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border-light);
            overflow: hidden;
            transition: all var(--transition-fast);
        }

        .faq-item:hover {
            border-color: #CBD5E1;
        }

        .faq-question {
            width: 100%;
            padding: 18px 22px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-text-dark);
            background: none;
            border: none;
            cursor: pointer;
            text-align: left;
            gap: 12px;
        }

        .faq-question .faq-arrow {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(0, 168, 150, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            transition: transform var(--transition-fast);
            font-size: 0.7rem;
            color: var(--color-accent);
        }

        .faq-item.open .faq-arrow {
            transform: rotate(180deg);
            background: var(--color-accent);
            color: #fff;
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-normal);
            padding: 0 22px;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 22px 18px;
        }

        .faq-answer p {
            font-size: 0.92rem;
            color: #5A6B7C;
            line-height: 1.7;
        }

        /* ========== CTA ========== */
        .cta-section {
            background: linear-gradient(160deg, var(--color-primary) 0%, #0F2238 100%);
            padding: 70px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -80px;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: rgba(0, 168, 150, 0.08);
            z-index: 0;
        }

        .cta-section .container {
            position: relative;
            z-index: 1;
        }

        .cta-section h2 {
            font-size: 2rem;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 10px;
        }

        .cta-section p {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: 24px;
            max-width: 550px;
            margin-left: auto;
            margin-right: auto;
        }

        .cta-form {
            display: flex;
            gap: 10px;
            max-width: 500px;
            margin: 0 auto;
            flex-wrap: wrap;
            justify-content: center;
        }

        .cta-form input {
            flex: 1;
            min-width: 220px;
            padding: 14px 18px;
            border-radius: var(--radius-sm);
            border: 1.5px solid rgba(255, 255, 255, 0.3);
            background: rgba(255, 255, 255, 0.08);
            color: #FFFFFF;
            font-size: 0.95rem;
        }

        .cta-form input::placeholder {
            color: rgba(255, 255, 255, 0.45);
        }

        .cta-form .btn-cta {
            padding: 14px 30px;
            background: var(--color-emphasis);
            color: #1A1A1A;
            font-weight: 700;
            font-size: 0.95rem;
            border-radius: var(--radius-sm);
            white-space: nowrap;
            border: none;
            cursor: pointer;
            letter-spacing: 0.02em;
            transition: all var(--transition-fast);
        }

        .cta-form .btn-cta:hover {
            background: #FFC940;
            box-shadow: 0 0 20px var(--color-emphasis-glow);
            transform: translateY(-2px);
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--color-primary);
            color: rgba(255, 255, 255, 0.7);
            padding: 50px 0 24px;
            font-size: 0.9rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            margin-bottom: 30px;
        }

        .footer-grid h4 {
            color: #FFFFFF;
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 14px;
            letter-spacing: 0.03em;
        }

        .footer-grid a {
            display: block;
            color: rgba(255, 255, 255, 0.6);
            padding: 4px 0;
            font-size: 0.88rem;
            transition: color var(--transition-fast);
            text-decoration: none;
        }

        .footer-grid a:hover {
            color: var(--color-accent-light);
            text-decoration: none;
        }

        .footer-social-icons {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        .footer-social-icons a {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
            transition: all var(--transition-fast);
        }

        .footer-social-icons a:hover {
            background: var(--color-accent);
            color: #fff;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 18px;
            display: flex;
            flex-wrap: wrap;
            gap: 12px 20px;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.5);
            justify-content: center;
            text-align: center;
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
            text-decoration: none;
        }

        .footer-bottom a:hover {
            color: var(--color-accent-light);
            text-decoration: underline;
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .hero-whitepaper .container {
                grid-template-columns: 1fr;
                gap: 30px;
                text-align: center;
            }

            .whitepaper-cover {
                flex-direction: row;
                gap: 20px;
                justify-content: center;
            }

            .whitepaper-cover .cover-image-wrap {
                width: 200px;
                height: 270px;
            }

            .whitepaper-toc ul {
                grid-template-columns: 1fr;
            }

            .whitepaper-form {
                justify-content: center;
            }

            .pain-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .solution-block {
                grid-template-columns: 1fr;
                gap: 30px;
            }

            .solution-block.reverse {
                direction: ltr;
            }

            .stats-strip {
                grid-template-columns: repeat(2, 1fr);
            }

            .deep-content-block {
                grid-template-columns: 1fr;
            }

            .deep-content-block .dc-image {
                aspect-ratio: 16/9;
                min-height: auto;
            }

            .testimonial-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .header-nav {
                gap: 1px;
            }

            .header-nav a {
                padding: 6px 10px;
                font-size: 0.8rem;
            }
        }

        @media (max-width: 768px) {
            .hamburger-btn {
                display: flex;
            }

            .header-nav {
                position: fixed;
                top: 0;
                right: -100%;
                width: 75%;
                max-width: 320px;
                height: 100vh;
                background: rgba(13, 27, 42, 0.96);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                flex-direction: column;
                align-items: flex-start;
                padding: 90px 24px 30px;
                gap: 2px;
                transition: right var(--transition-normal);
                z-index: 999;
                border-left: 1px solid rgba(255, 255, 255, 0.08);
            }

            .header-nav.open {
                right: 0;
            }

            .header-nav a {
                width: 100%;
                padding: 12px 16px;
                font-size: 0.95rem;
                border-radius: 8px;
            }

            .header-nav .nav-cta {
                margin-left: 0;
                margin-top: 8px;
                text-align: center;
                justify-content: center;
            }

            .section {
                padding: 50px 0;
            }

            .section-title {
                font-size: 1.5rem;
            }

            .hero-whitepaper {
                min-height: auto;
                padding: 40px 0 50px;
            }

            .whitepaper-info h1 {
                font-size: 1.8rem;
            }

            .whitepaper-cover {
                flex-direction: column;
                align-items: center;
            }

            .whitepaper-cover .cover-image-wrap {
                width: 180px;
                height: 240px;
            }

            .pain-grid {
                grid-template-columns: 1fr;
            }

            .stats-strip {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }

            .stat-card .stat-number {
                font-size: 2rem;
            }

            .testimonial-grid {
                grid-template-columns: 1fr;
            }

            .deep-content-alt .info-list {
                grid-template-columns: 1fr;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .footer-bottom {
                flex-direction: column;
                gap: 6px;
            }

            .cta-form {
                flex-direction: column;
                align-items: stretch;
            }

            .cta-form input {
                min-width: auto;
            }

            .whitepaper-form {
                flex-direction: column;
                align-items: stretch;
            }

            .whitepaper-form input {
                min-width: auto;
            }

            .deep-content-block .dc-body {
                padding: 20px 16px;
            }

            .deep-content-alt {
                padding: 24px 16px;
            }
        }

        @media (max-width: 520px) {
            .stats-strip {
                grid-template-columns: 1fr;
            }

            .whitepaper-info h1 {
                font-size: 1.5rem;
            }

            .section-title {
                font-size: 1.3rem;
            }

            .whitepaper-toc ul {
                grid-template-columns: 1fr;
            }

            .site-header {
                --nav-height: 58px;
            }

            body {
                padding-top: 58px;
            }
        }

/* roulang page: category6 */
:root {
            --color-primary: #0D1B2A;
            --color-primary-light: #152238;
            --color-accent: #00A896;
            --color-accent-dark: #008B7A;
            --color-accent-light: #00B4A6;
            --color-emphasis: #FFB703;
            --color-emphasis-glow: rgba(255, 183, 3, 0.55);
            --color-text: #E0E6ED;
            --color-text-secondary: #8A9BB5;
            --color-text-dark: #1A2B3C;
            --color-bg-light: #F4F6F9;
            --color-card-bg: #FFFFFF;
            --color-border: rgba(0, 0, 0, 0.06);
            --color-border-light: #E2E8F0;
            --color-glass-bg: rgba(13, 27, 42, 0.75);
            --color-glass-border: rgba(255, 255, 255, 0.08);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);
            --shadow-glow: 0 0 20px rgba(0, 168, 150, 0.35);
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --font-mono: 'SF Mono', 'Consolas', 'Monaco', monospace;
            --max-width: 1200px;
            --nav-height: 68px;
            --transition-fast: 0.2s ease;
            --transition-normal: 0.3s ease;
            --transition-slow: 0.5s ease;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-sans);
            line-height: 1.7;
            color: var(--color-text-dark);
            background: #FAFBFC;
            min-height: 100vh;
            overflow-x: hidden;
            letter-spacing: 0.01em;
            padding-top: var(--nav-height);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            color: var(--color-accent);
            text-decoration: none;
            transition: color var(--transition-fast), text-decoration var(--transition-fast);
        }
        a:hover {
            color: var(--color-accent-dark);
            text-decoration: underline;
        }
        a:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 3px;
            border-radius: 4px;
        }

        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            background: none;
            transition: all var(--transition-fast);
        }
        button:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 3px;
            border-radius: 4px;
        }

        input {
            font-family: inherit;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
        }
        input:focus-visible {
            outline: none;
            border-color: var(--color-accent);
            box-shadow: 0 0 0 3px rgba(0, 168, 150, 0.2);
        }

        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }

        /* ========== HEADER / NAVIGATION ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--nav-height);
            background: var(--color-glass-bg);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--color-glass-border);
            transition: background var(--transition-normal), backdrop-filter var(--transition-normal), box-shadow var(--transition-normal);
        }
        .site-header.glass--solid {
            background: var(--color-primary);
            backdrop-filter: none;
            -webkit-backdrop-filter: none;
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.25);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
            gap: 16px;
        }
        .header-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 700;
            color: #FFFFFF;
            letter-spacing: 0.03em;
            white-space: nowrap;
            text-decoration: none;
            flex-shrink: 0;
        }
        .header-logo:hover {
            color: #FFFFFF;
            text-decoration: none;
            opacity: 0.9;
        }
        .header-logo .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--color-accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            color: #fff;
            flex-shrink: 0;
            font-weight: 700;
        }
        .header-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            flex-wrap: nowrap;
        }
        .header-nav a {
            display: inline-flex;
            align-items: center;
            padding: 8px 14px;
            border-radius: 6px;
            color: rgba(255, 255, 255, 0.85);
            font-size: 0.9rem;
            font-weight: 500;
            white-space: nowrap;
            transition: all var(--transition-fast);
            text-decoration: none;
        }
        .header-nav a:hover {
            color: #FFFFFF;
            background: rgba(255, 255, 255, 0.1);
            text-decoration: none;
        }
        .header-nav a.active {
            color: #FFFFFF;
            background: rgba(0, 168, 150, 0.35);
            font-weight: 600;
        }
        .header-nav .nav-cta {
            background: var(--color-emphasis);
            color: #1A1A1A;
            font-weight: 600;
            padding: 9px 18px;
            border-radius: 8px;
            margin-left: 8px;
            transition: all var(--transition-fast);
        }
        .header-nav .nav-cta:hover {
            background: #FFC940;
            color: #1A1A1A;
            box-shadow: var(--shadow-glow);
            text-decoration: none;
        }
        .hamburger-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            padding: 8px;
            z-index: 1001;
            background: none;
            border: none;
            flex-shrink: 0;
        }
        .hamburger-toggle span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: #FFFFFF;
            border-radius: 2px;
            transition: all var(--transition-fast);
        }
        .hamburger-toggle.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .hamburger-toggle.active span:nth-child(2) {
            opacity: 0;
        }
        .hamburger-toggle.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        /* ========== PAGE BANNER ========== */
        .page-banner {
            position: relative;
            min-height: 380px;
            display: flex;
            align-items: center;
            background: var(--color-primary-light);
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            overflow: hidden;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(13, 27, 42, 0.88) 0%, rgba(13, 27, 42, 0.55) 60%, rgba(0, 168, 150, 0.25) 100%);
            z-index: 1;
        }
        .page-banner .banner-content {
            position: relative;
            z-index: 2;
            padding: 60px 0;
            width: 100%;
        }
        .page-banner .banner-badge {
            display: inline-block;
            background: var(--color-emphasis);
            color: #1A1A1A;
            font-weight: 700;
            font-size: 0.85rem;
            padding: 6px 16px;
            border-radius: 20px;
            letter-spacing: 0.04em;
            margin-bottom: 16px;
            animation: pulse-badge 2.2s ease-in-out infinite;
        }
        @keyframes pulse-badge {
            0%,
            100% {
                box-shadow: 0 0 0 0 rgba(255, 183, 3, 0.55);
            }
            50% {
                box-shadow: 0 0 0 14px rgba(255, 183, 3, 0);
            }
        }
        .page-banner h1 {
            font-size: 2.8rem;
            font-weight: 800;
            color: #FFFFFF;
            line-height: 1.25;
            margin-bottom: 16px;
            letter-spacing: 0.02em;
            text-shadow: 0 2px 12px rgba(0, 0, 0, 0.4);
            max-width: 700px;
        }
        .page-banner .banner-subtitle {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.8);
            max-width: 580px;
            line-height: 1.6;
            margin-bottom: 24px;
        }
        .page-banner .banner-cta-row {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--color-accent);
            color: #FFFFFF;
            font-weight: 600;
            font-size: 1rem;
            padding: 13px 28px;
            border-radius: var(--radius-sm);
            text-decoration: none;
            transition: all var(--transition-fast);
            border: none;
            cursor: pointer;
            letter-spacing: 0.02em;
        }
        .btn-primary:hover {
            background: var(--color-accent-dark);
            box-shadow: var(--shadow-glow);
            transform: translateY(-2px);
            text-decoration: none;
            color: #FFFFFF;
        }
        .btn-emphasis {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--color-emphasis);
            color: #1A1A1A;
            font-weight: 700;
            font-size: 1rem;
            padding: 13px 28px;
            border-radius: var(--radius-sm);
            text-decoration: none;
            transition: all var(--transition-fast);
            border: none;
            cursor: pointer;
            letter-spacing: 0.02em;
        }
        .btn-emphasis:hover {
            background: #FFC940;
            box-shadow: 0 0 22px rgba(255, 183, 3, 0.6);
            transform: translateY(-2px);
            text-decoration: none;
            color: #1A1A1A;
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: #FFFFFF;
            font-weight: 600;
            font-size: 1rem;
            padding: 12px 26px;
            border-radius: var(--radius-sm);
            border: 2px solid rgba(255, 255, 255, 0.55);
            text-decoration: none;
            transition: all var(--transition-fast);
            cursor: pointer;
            letter-spacing: 0.02em;
        }
        .btn-outline:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #FFFFFF;
            color: #FFFFFF;
            text-decoration: none;
        }

        /* ========== SECTIONS ========== */
        .section {
            padding: 80px 0;
        }
        .section-alt {
            background: var(--color-bg-light);
        }
        .section-dark {
            background: var(--color-primary);
            color: var(--color-text);
        }
        .section-dark h2,
        .section-dark h3 {
            color: #FFFFFF;
        }
        .section-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.08em;
            color: var(--color-accent);
            margin-bottom: 8px;
        }
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--color-text-dark);
            margin-bottom: 12px;
            line-height: 1.3;
            letter-spacing: 0.02em;
        }
        .section-dark .section-title {
            color: #FFFFFF;
        }
        .section-desc {
            font-size: 1.05rem;
            color: var(--color-text-secondary);
            max-width: 650px;
            line-height: 1.7;
            margin-bottom: 32px;
        }
        .section-dark .section-desc {
            color: rgba(255, 255, 255, 0.7);
        }

        /* ========== PAIN POINTS ========== */
        .pain-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .pain-card {
            background: var(--color-card-bg);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-normal);
            text-align: center;
        }
        .pain-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: rgba(0, 168, 150, 0.25);
        }
        .pain-card .pain-icon {
            font-size: 2.8rem;
            margin-bottom: 14px;
            display: block;
        }
        .pain-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--color-text-dark);
            margin-bottom: 8px;
        }
        .pain-card p {
            font-size: 0.95rem;
            color: var(--color-text-secondary);
            line-height: 1.6;
        }

        /* ========== SOLUTION AREA ========== */
        .solution-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
            margin-bottom: 48px;
        }
        .solution-block.reverse {
            direction: rtl;
        }
        .solution-block.reverse>* {
            direction: ltr;
        }
        .solution-block .solution-img {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            aspect-ratio: 16/10;
        }
        .solution-block .solution-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .solution-block .solution-text h3 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--color-text-dark);
            margin-bottom: 12px;
            line-height: 1.35;
        }
        .solution-block .solution-text p {
            font-size: 1rem;
            color: var(--color-text-secondary);
            line-height: 1.75;
            margin-bottom: 10px;
        }

        /* ========== STATS STRIP ========== */
        .stats-strip {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .stat-card {
            background: var(--color-card-bg);
            border-radius: var(--radius-md);
            padding: 32px 20px;
            text-align: center;
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-normal);
        }
        .stat-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .stat-card .stat-number {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--color-accent);
            font-family: var(--font-mono);
            letter-spacing: -0.02em;
            line-height: 1;
            margin-bottom: 8px;
        }
        .stat-card .stat-label {
            font-size: 0.95rem;
            color: var(--color-text-secondary);
            font-weight: 500;
        }

        /* ========== RANKING CARDS ========== */
        .ranking-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .ranking-card {
            background: var(--color-card-bg);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-normal);
        }
        .ranking-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
            border-color: rgba(0, 168, 150, 0.3);
        }
        .ranking-card .card-img-wrap {
            position: relative;
            aspect-ratio: 16/9;
            overflow: hidden;
            background: #E2E8F0;
        }
        .ranking-card .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .ranking-card .card-img-wrap .rank-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--color-accent);
            color: #fff;
            font-weight: 700;
            font-size: 0.8rem;
            padding: 5px 12px;
            border-radius: 20px;
            letter-spacing: 0.04em;
            z-index: 2;
        }
        .ranking-card .card-body {
            padding: 20px;
        }
        .ranking-card .card-body h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--color-text-dark);
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .ranking-card .card-body p {
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            line-height: 1.6;
            margin-bottom: 12px;
        }
        .ranking-card .card-body .card-link {
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--color-accent);
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: all var(--transition-fast);
        }
        .ranking-card .card-body .card-link:hover {
            color: var(--color-accent-dark);
            text-decoration: underline;
        }

        /* ========== DEEP CONTENT ========== */
        .deep-content-block {
            display: grid;
            grid-template-columns: 1fr 1.3fr;
            gap: 40px;
            align-items: center;
            background: var(--color-card-bg);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--color-border);
            margin-bottom: 32px;
        }
        .deep-content-block .deep-img {
            aspect-ratio: 4/3;
            overflow: hidden;
            background: #E2E8F0;
            min-height: 280px;
        }
        .deep-content-block .deep-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .deep-content-block .deep-text {
            padding: 32px 28px;
        }
        .deep-content-block .deep-text h3 {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--color-text-dark);
            margin-bottom: 10px;
            line-height: 1.35;
        }
        .deep-content-block .deep-text p {
            font-size: 0.95rem;
            color: var(--color-text-secondary);
            line-height: 1.75;
            margin-bottom: 10px;
        }
        .deep-content-block .deep-text .deep-meta {
            font-size: 0.8rem;
            color: var(--color-accent);
            font-weight: 600;
            letter-spacing: 0.03em;
        }

        /* ========== TESTIMONIALS ========== */
        .testimonial-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .testimonial-card {
            background: var(--color-card-bg);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-normal);
            text-align: center;
        }
        .testimonial-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .testimonial-card .avatar-placeholder {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--color-bg-light);
            margin: 0 auto 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: var(--color-accent);
            font-weight: 700;
            border: 3px solid var(--color-accent-light);
        }
        .testimonial-card .quote {
            font-size: 0.95rem;
            color: var(--color-text-dark);
            line-height: 1.7;
            font-style: italic;
            margin-bottom: 12px;
            quotes: "「""」";
        }
        .testimonial-card .quote::before {
            content: "「";
        }
        .testimonial-card .quote::after {
            content: "」";
        }
        .testimonial-card .author {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--color-text-secondary);
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--color-card-bg);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border);
            margin-bottom: 12px;
            overflow: hidden;
            transition: all var(--transition-fast);
            box-shadow: var(--shadow-sm);
        }
        .faq-item:hover {
            border-color: rgba(0, 168, 150, 0.2);
        }
        .faq-question {
            width: 100%;
            padding: 18px 22px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-text-dark);
            cursor: pointer;
            background: none;
            border: none;
            text-align: left;
            gap: 12px;
            letter-spacing: 0.02em;
        }
        .faq-question .faq-arrow {
            flex-shrink: 0;
            transition: transform var(--transition-fast);
            font-size: 1.1rem;
            color: var(--color-accent);
        }
        .faq-item.open .faq-question .faq-arrow {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-slow);
            padding: 0 22px;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 22px 18px;
        }
        .faq-answer p {
            font-size: 0.95rem;
            color: var(--color-text-secondary);
            line-height: 1.7;
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            position: relative;
            background: var(--color-primary);
            overflow: hidden;
            padding: 70px 0;
            text-align: center;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at center, rgba(0, 168, 150, 0.18) 0%, transparent 65%);
            z-index: 1;
        }
        .cta-section .cta-inner {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            font-size: 2rem;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 12px;
            letter-spacing: 0.02em;
        }
        .cta-section p {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: 24px;
            max-width: 550px;
            margin-left: auto;
            margin-right: auto;
            line-height: 1.6;
        }
        .cta-form {
            display: flex;
            gap: 10px;
            max-width: 460px;
            margin: 0 auto;
            flex-wrap: wrap;
            justify-content: center;
        }
        .cta-form input {
            flex: 1;
            min-width: 220px;
            padding: 13px 18px;
            border-radius: var(--radius-sm);
            border: 1px solid rgba(255, 255, 255, 0.25);
            background: rgba(255, 255, 255, 0.1);
            color: #FFFFFF;
            font-size: 1rem;
            outline: none;
            letter-spacing: 0.02em;
        }
        .cta-form input::placeholder {
            color: rgba(255, 255, 255, 0.45);
        }
        .cta-form input:focus {
            border-color: var(--color-accent);
            box-shadow: 0 0 0 3px rgba(0, 168, 150, 0.25);
        }
        .cta-form .btn-emphasis {
            padding: 13px 24px;
            white-space: nowrap;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--color-primary);
            color: rgba(255, 255, 255, 0.7);
            padding: 50px 0 24px;
            font-size: 0.9rem;
        }
        .site-footer h4 {
            color: #FFFFFF;
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 14px;
            letter-spacing: 0.03em;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-grid a {
            display: block;
            color: rgba(255, 255, 255, 0.6);
            text-decoration: none;
            padding: 4px 0;
            font-size: 0.88rem;
            transition: color var(--transition-fast);
        }
        .footer-grid a:hover {
            color: #FFFFFF;
            text-decoration: none;
        }
        .footer-social-icons {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }
        .footer-social-icons a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            color: rgba(255, 255, 255, 0.7);
            font-size: 1.1rem;
            transition: all var(--transition-fast);
            text-decoration: none;
        }
        .footer-social-icons a:hover {
            background: var(--color-accent);
            color: #FFFFFF;
            text-decoration: none;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 12px 24px;
            justify-content: center;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.5);
            text-align: center;
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        .footer-bottom a:hover {
            color: #FFFFFF;
            text-decoration: underline;
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .header-nav {
                gap: 0;
            }
            .header-nav a {
                padding: 7px 10px;
                font-size: 0.82rem;
            }
            .page-banner h1 {
                font-size: 2.2rem;
            }
            .pain-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .ranking-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .testimonial-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .deep-content-block {
                grid-template-columns: 1fr;
            }
            .solution-block {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .solution-block.reverse {
                direction: ltr;
            }
            .stats-strip {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .hamburger-toggle {
                display: flex;
            }
            .header-nav {
                position: fixed;
                top: 0;
                right: -100%;
                width: 280px;
                height: 100vh;
                background: var(--color-primary);
                flex-direction: column;
                align-items: flex-start;
                padding: 90px 24px 30px;
                gap: 6px;
                transition: right var(--transition-normal);
                box-shadow: -4px 0 24px rgba(0, 0, 0, 0.4);
                z-index: 999;
                overflow-y: auto;
            }
            .header-nav.open {
                right: 0;
            }
            .header-nav a {
                width: 100%;
                padding: 12px 16px;
                font-size: 1rem;
                border-radius: 8px;
            }
            .header-nav .nav-cta {
                margin-left: 0;
                text-align: center;
                justify-content: center;
            }
            .page-banner {
                min-height: 300px;
            }
            .page-banner h1 {
                font-size: 1.7rem;
            }
            .page-banner .banner-subtitle {
                font-size: 0.95rem;
            }
            .section {
                padding: 50px 0;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .pain-grid {
                grid-template-columns: 1fr;
            }
            .ranking-grid {
                grid-template-columns: 1fr;
            }
            .testimonial-grid {
                grid-template-columns: 1fr;
            }
            .stats-strip {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .cta-form {
                flex-direction: column;
            }
            .cta-form input {
                min-width: auto;
            }
            .btn-primary,
            .btn-emphasis,
            .btn-outline {
                padding: 11px 20px;
                font-size: 0.9rem;
            }
        }

        @media (max-width: 520px) {
            .page-banner h1 {
                font-size: 1.4rem;
            }
            .stats-strip {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-card .stat-number {
                font-size: 2rem;
            }
            .deep-content-block .deep-text {
                padding: 20px 16px;
            }
            .footer-bottom {
                flex-direction: column;
                gap: 6px;
                align-items: center;
            }
        }