/* roulang page: index */
:root {
            --color-primary: #1a1a2e;
            --color-primary-light: #16213e;
            --color-accent: #e8a850;
            --color-accent-dark: #c88a3a;
            --color-accent-light: #f5d5a0;
            --color-bg: #f8f9fa;
            --color-white: #ffffff;
            --color-text: #2d3436;
            --color-text-weak: #636e72;
            --color-text-light: #8b949e;
            --color-border: #e0e0e0;
            --color-border-light: #eef0f2;
            --color-success: #27ae60;
            --color-card-bg: #ffffff;
            --color-overlay: rgba(26, 26, 46, 0.75);
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 1px 3px 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-xl: 0 16px 48px rgba(0, 0, 0, 0.16);
            --transition-fast: 0.18s ease;
            --transition-base: 0.28s ease;
            --transition-slow: 0.4s ease;
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --max-width: 1200px;
            --nav-height: 68px;
            --section-gap: 80px;
        }

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

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

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
            overflow-x: hidden;
        }

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

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

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

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

        ul,
        ol {
            list-style: none;
        }

        input {
            font-family: inherit;
            font-size: inherit;
        }

        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* Header & Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: var(--color-white);
            border-bottom: 1px solid var(--color-border-light);
            height: var(--nav-height);
            transition: box-shadow var(--transition-base);
        }

        .site-header.scrolled {
            box-shadow: var(--shadow-md);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--nav-height);
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        .logo-wrap {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 700;
            font-size: 18px;
        }

        .logo-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .nav-links a {
            display: inline-flex;
            align-items: center;
            padding: 8px 18px;
            border-radius: 8px;
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text);
            position: relative;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .nav-links a:hover {
            color: var(--color-accent-dark);
            background: rgba(232, 168, 80, 0.06);
        }

        .nav-links a.active {
            color: var(--color-accent-dark);
            font-weight: 600;
            background: rgba(232, 168, 80, 0.1);
        }

        .nav-mega-trigger {
            position: relative;
        }

        .nav-mega-trigger>a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .nav-mega-trigger>a .arrow-icon {
            font-size: 10px;
            transition: transform var(--transition-fast);
        }

        .nav-mega-trigger:hover>a .arrow-icon {
            transform: rotate(180deg);
        }

        .mega-panel {
            position: absolute;
            top: 100%;
            right: 0;
            margin-top: 10px;
            background: var(--color-white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-xl);
            padding: 24px 28px;
            min-width: 520px;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            opacity: 0;
            visibility: hidden;
            transform: translateY(-8px);
            transition: all var(--transition-base);
            border: 1px solid var(--color-border-light);
            z-index: 1001;
        }

        .nav-mega-trigger:hover .mega-panel {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }

        .mega-card {
            background: var(--color-bg);
            border-radius: var(--radius-md);
            padding: 18px 16px;
            display: flex;
            align-items: flex-start;
            gap: 14px;
            transition: all var(--transition-fast);
            border: 1px solid transparent;
        }

        .mega-card:hover {
            background: var(--color-white);
            border-color: var(--color-border);
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }

        .mega-card-icon {
            width: 44px;
            height: 44px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--color-accent-light), var(--color-accent));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
            flex-shrink: 0;
        }

        .mega-card-info h4 {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-primary);
            margin-bottom: 4px;
        }

        .mega-card-info p {
            font-size: 12px;
            color: var(--color-text-weak);
            line-height: 1.5;
        }

        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            padding: 8px;
            z-index: 1002;
            background: none;
        }

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

        .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);
        }

        .mobile-menu {
            display: none;
            position: fixed;
            top: var(--nav-height);
            left: 0;
            right: 0;
            bottom: 0;
            background: var(--color-white);
            z-index: 999;
            padding: 24px 20px;
            overflow-y: auto;
            flex-direction: column;
            gap: 4px;
        }

        .mobile-menu.active {
            display: flex;
        }

        .mobile-menu a {
            display: block;
            padding: 14px 18px;
            font-size: 16px;
            font-weight: 500;
            color: var(--color-text);
            border-radius: 10px;
            transition: all var(--transition-fast);
        }

        .mobile-menu a:hover,
        .mobile-menu a.active {
            background: rgba(232, 168, 80, 0.08);
            color: var(--color-accent-dark);
        }

        .mobile-menu .mobile-mega-group {
            display: flex;
            flex-direction: column;
            gap: 6px;
            padding: 8px 0 8px 16px;
        }

        .mobile-menu .mobile-mega-group a {
            font-size: 14px;
            padding: 10px 14px;
            color: var(--color-text-weak);
        }

        /* Hero Section */
        .hero {
            position: relative;
            min-height: 620px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            margin-top: var(--nav-height);
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: var(--color-overlay);
            z-index: 1;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 780px;
            padding: 60px 24px;
            color: #fff;
        }

        .hero-badge {
            display: inline-block;
            background: rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.25);
            color: #fff;
            padding: 8px 20px;
            border-radius: 50px;
            font-size: 14px;
            font-weight: 500;
            letter-spacing: 1px;
            margin-bottom: 24px;
        }

        .hero h1 {
            font-size: 44px;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 18px;
            letter-spacing: 0.5px;
        }

        .hero h1 .highlight {
            color: var(--color-accent);
        }

        .hero-description {
            font-size: 18px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.88);
            margin-bottom: 36px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        .hero-actions {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 30px;
            font-size: 16px;
            font-weight: 600;
            border-radius: 50px;
            cursor: pointer;
            transition: all var(--transition-base);
            letter-spacing: 0.3px;
            border: none;
            white-space: nowrap;
        }

        .btn-primary {
            background: var(--color-accent);
            color: #fff;
        }

        .btn-primary:hover {
            background: var(--color-accent-dark);
            box-shadow: 0 8px 28px rgba(232, 168, 80, 0.4);
            transform: translateY(-2px);
        }

        .btn-outline {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.6);
        }

        .btn-outline:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #fff;
            transform: translateY(-2px);
        }

        .btn-sm {
            padding: 10px 22px;
            font-size: 14px;
        }

        .btn-lg {
            padding: 16px 36px;
            font-size: 18px;
        }

        /* Section Common */
        .section {
            padding: var(--section-gap) 0;
        }

        .section-header {
            text-align: center;
            margin-bottom: 50px;
        }

        .section-label {
            display: inline-block;
            background: rgba(232, 168, 80, 0.1);
            color: var(--color-accent-dark);
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.8px;
            margin-bottom: 14px;
            text-transform: uppercase;
        }

        .section-header h2 {
            font-size: 34px;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 12px;
            letter-spacing: 0.3px;
        }

        .section-header p {
            font-size: 16px;
            color: var(--color-text-weak);
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.6;
        }

        /* Features */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .feature-card {
            background: var(--color-card-bg);
            border-radius: var(--radius-lg);
            padding: 32px 24px;
            text-align: center;
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-base);
            position: relative;
            overflow: hidden;
        }

        .feature-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: transparent;
        }

        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--color-accent), var(--color-accent-dark));
            opacity: 0;
            transition: opacity var(--transition-base);
        }

        .feature-card:hover::before {
            opacity: 1;
        }

        .feature-icon-wrap {
            width: 60px;
            height: 60px;
            border-radius: 50%;
            background: rgba(232, 168, 80, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
            font-size: 26px;
            color: var(--color-accent-dark);
            transition: all var(--transition-base);
        }

        .feature-card:hover .feature-icon-wrap {
            background: var(--color-accent);
            color: #fff;
            transform: scale(1.08);
        }

        .feature-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 8px;
        }

        .feature-card p {
            font-size: 14px;
            color: var(--color-text-weak);
            line-height: 1.6;
        }

        /* Categories */
        .categories-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }

        .category-card {
            background: var(--color-card-bg);
            border-radius: var(--radius-xl);
            overflow: hidden;
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
            cursor: pointer;
            position: relative;
        }

        .category-card:hover {
            box-shadow: var(--shadow-xl);
            transform: translateY(-4px);
            border-color: transparent;
        }

        .category-card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }

        .category-card:hover .category-card-img {
            transform: scale(1.04);
        }

        .category-card-body {
            padding: 24px 20px;
        }

        .category-card-body h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 8px;
        }

        .category-card-body p {
            font-size: 14px;
            color: var(--color-text-weak);
            line-height: 1.6;
            margin-bottom: 16px;
        }

        .category-card-body .btn-sm {
            background: var(--color-primary);
            color: #fff;
        }

        .category-card-body .btn-sm:hover {
            background: var(--color-accent-dark);
            box-shadow: 0 4px 16px rgba(232, 168, 80, 0.35);
        }

        /* News / CMS List */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .news-card {
            background: var(--color-card-bg);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
        }

        .news-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
            border-color: transparent;
        }

        .news-card-img-wrap {
            position: relative;
            overflow: hidden;
            height: 180px;
        }

        .news-card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }

        .news-card:hover .news-card-img-wrap img {
            transform: scale(1.05);
        }

        .news-card-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--color-accent);
            color: #fff;
            padding: 4px 12px;
            border-radius: 50px;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.5px;
        }

        .news-card-body {
            padding: 18px 16px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .news-card-body h3 {
            font-size: 16px;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 8px;
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-card-body p {
            font-size: 13px;
            color: var(--color-text-weak);
            line-height: 1.6;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-card-meta {
            display: flex;
            align-items: center;
            gap: 14px;
            margin-top: 12px;
            font-size: 12px;
            color: var(--color-text-light);
        }

        .news-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: 60px 20px;
            color: var(--color-text-weak);
            font-size: 16px;
            background: var(--color-card-bg);
            border-radius: var(--radius-lg);
            border: 1px dashed var(--color-border);
        }

        /* Stats */
        .stats-section {
            background: var(--color-primary);
            color: #fff;
            padding: 60px 0;
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
        }

        .stat-item .stat-number {
            font-size: 42px;
            font-weight: 800;
            color: var(--color-accent);
            letter-spacing: 1px;
            line-height: 1.2;
        }

        .stat-item .stat-label {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.75);
            margin-top: 6px;
            letter-spacing: 0.5px;
        }

        /* Guide Steps */
        .steps-list {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            counter-reset: step;
        }

        .step-item {
            background: var(--color-card-bg);
            border-radius: var(--radius-lg);
            padding: 28px 20px;
            text-align: center;
            border: 1px solid var(--color-border-light);
            position: relative;
            counter-increment: step;
            transition: all var(--transition-base);
        }

        .step-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            border-color: transparent;
        }

        .step-number {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--color-accent);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 18px;
            margin: 0 auto 16px;
        }

        .step-item h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 6px;
        }

        .step-item p {
            font-size: 13px;
            color: var(--color-text-weak);
            line-height: 1.5;
        }

        /* FAQ */
        .faq-list {
            max-width: 760px;
            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-light);
            overflow: hidden;
            transition: all var(--transition-fast);
        }

        .faq-item:hover {
            border-color: var(--color-accent-light);
            box-shadow: var(--shadow-sm);
        }

        .faq-question {
            width: 100%;
            background: none;
            padding: 20px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 16px;
            font-weight: 600;
            color: var(--color-primary);
            cursor: pointer;
            text-align: left;
            gap: 14px;
            transition: color var(--transition-fast);
        }

        .faq-question:hover {
            color: var(--color-accent-dark);
        }

        .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(232, 168, 80, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            font-size: 12px;
            color: var(--color-accent-dark);
            transition: all var(--transition-fast);
        }

        .faq-item.open .faq-icon {
            background: var(--color-accent);
            color: #fff;
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-base);
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
        }

        .faq-answer-inner {
            padding: 0 24px 20px;
            font-size: 14px;
            color: var(--color-text-weak);
            line-height: 1.7;
        }

        /* CTA */
        .cta-section {
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            position: relative;
            padding: 80px 0;
            text-align: center;
            color: #fff;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(26, 26, 46, 0.82);
            z-index: 1;
        }

        .cta-content {
            position: relative;
            z-index: 2;
            max-width: 600px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .cta-content h2 {
            font-size: 34px;
            font-weight: 700;
            margin-bottom: 14px;
            letter-spacing: 0.3px;
        }

        .cta-content p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 30px;
            line-height: 1.6;
        }

        /* Footer */
        .site-footer {
            background: var(--color-primary);
            color: rgba(255, 255, 255, 0.7);
            padding: 50px 0 28px;
            font-size: 14px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 36px;
        }

        .footer-brand .logo-text {
            color: #fff;
            font-size: 20px;
            margin-bottom: 10px;
            display: block;
        }

        .footer-brand p {
            font-size: 13px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.55);
        }

        .footer-col h4 {
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 14px;
            letter-spacing: 0.4px;
        }

        .footer-col a {
            display: block;
            color: rgba(255, 255, 255, 0.6);
            padding: 6px 0;
            font-size: 13px;
            transition: color var(--transition-fast);
        }

        .footer-col a:hover {
            color: var(--color-accent);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 22px;
            text-align: center;
            font-size: 12px;
            color: rgba(255, 255, 255, 0.4);
            letter-spacing: 0.3px;
        }

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

        .footer-bottom a:hover {
            color: var(--color-accent);
        }

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

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

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }

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

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

            .hero h1 {
                font-size: 34px;
            }

            .section-header h2 {
                font-size: 28px;
            }

            .mega-panel {
                min-width: 420px;
                right: -40px;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }

            .hamburger {
                display: flex;
            }

            .hero {
                min-height: 500px;
            }

            .hero h1 {
                font-size: 28px;
            }

            .hero-description {
                font-size: 15px;
            }

            .hero-actions {
                flex-direction: column;
                align-items: center;
            }

            .features-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

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

            .news-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }

            .stat-item .stat-number {
                font-size: 32px;
            }

            .steps-list {
                grid-template-columns: 1fr;
                gap: 14px;
            }

            .section {
                padding: 50px 0;
            }

            .section-header {
                margin-bottom: 32px;
            }

            .section-header h2 {
                font-size: 24px;
            }

            .cta-content h2 {
                font-size: 26px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .mega-panel {
                display: none;
            }
        }

        @media (max-width: 520px) {
            .hero h1 {
                font-size: 24px;
            }

            .hero {
                min-height: 420px;
            }

            .btn {
                padding: 12px 24px;
                font-size: 14px;
            }

            .container {
                padding: 0 16px;
            }

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

            .stat-item .stat-number {
                font-size: 28px;
            }

            .section-header h2 {
                font-size: 22px;
            }

            :root {
                --section-gap: 50px;
            }
        }

/* roulang page: article */
:root {
            --color-primary: #1B1F3B;
            --color-primary-light: #252B4F;
            --color-accent: #D4A853;
            --color-accent-hover: #C4953D;
            --color-accent-light: #F5EDDF;
            --color-blue: #3B82F6;
            --color-blue-light: #EFF6FF;
            --color-bg: #F5F6FA;
            --color-white: #FFFFFF;
            --color-text: #1A1A2E;
            --color-text-secondary: #4B5563;
            --color-text-muted: #6B7280;
            --color-text-light: #9CA3AF;
            --color-border: #E5E7EB;
            --color-border-light: #F0F1F3;
            --color-success: #10B981;
            --color-warning: #F59E0B;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --radius-full: 9999px;
            --shadow-xs: 0 1px 2px rgba(0,0,0,0.04);
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 2px 8px rgba(0,0,0,0.04);
            --shadow-md: 0 4px 16px rgba(0,0,0,0.07), 0 2px 6px rgba(0,0,0,0.05);
            --shadow-lg: 0 8px 32px rgba(0,0,0,0.09), 0 4px 12px rgba(0,0,0,0.06);
            --shadow-xl: 0 16px 48px rgba(0,0,0,0.11), 0 6px 18px rgba(0,0,0,0.07);
            --transition-fast: 0.18s ease;
            --transition-base: 0.25s ease;
            --transition-slow: 0.35s ease;
            --max-width: 1200px;
            --max-width-content: 800px;
            --nav-height: 72px;
            --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
        }

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

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

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

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

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

        button, input, textarea {
            font-family: inherit;
            font-size: inherit;
        }

        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        .container-narrow {
            width: 100%;
            max-width: var(--max-width-content);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* Header & Navigation */
        .site-header {
            background: var(--color-white);
            border-bottom: 1px solid var(--color-border-light);
            position: sticky;
            top: 0;
            z-index: 1000;
            height: var(--nav-height);
            box-shadow: var(--shadow-xs);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            background: rgba(255,255,255,0.97);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--nav-height);
            gap: 24px;
        }

        .logo-link {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.3rem;
            color: var(--color-primary);
            white-space: nowrap;
            letter-spacing: -0.02em;
            flex-shrink: 0;
        }

        .logo-link .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-accent);
            font-size: 1.1rem;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
        }

        .nav-links > a {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: var(--radius-full);
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--color-text-secondary);
            transition: all var(--transition-fast);
            white-space: nowrap;
            position: relative;
        }

        .nav-links > a:hover {
            color: var(--color-primary);
            background: var(--color-bg);
        }

        .nav-links > a.active {
            color: var(--color-primary);
            background: var(--color-accent-light);
            font-weight: 600;
        }

        .nav-mega-trigger {
            position: relative;
        }

        .nav-mega-trigger > a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            border-radius: var(--radius-full);
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--color-text-secondary);
            transition: all var(--transition-fast);
            white-space: nowrap;
            cursor: pointer;
        }

        .nav-mega-trigger > a:hover {
            color: var(--color-primary);
            background: var(--color-bg);
        }

        .arrow-icon {
            font-size: 0.65rem;
            transition: transform var(--transition-fast);
            opacity: 0.6;
        }

        .nav-mega-trigger:hover .arrow-icon {
            transform: rotate(180deg);
        }

        .mega-panel {
            position: absolute;
            top: calc(100% + 10px);
            right: 0;
            background: var(--color-white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-xl);
            padding: 12px;
            display: flex;
            flex-direction: column;
            gap: 6px;
            min-width: 300px;
            opacity: 0;
            visibility: hidden;
            transform: translateY(-8px);
            transition: all var(--transition-base);
            border: 1px solid var(--color-border-light);
            z-index: 1001;
        }

        .nav-mega-trigger:hover .mega-panel {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }

        .mega-card {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            padding: 14px 16px;
            border-radius: var(--radius-md);
            transition: all var(--transition-fast);
            text-decoration: none;
            color: var(--color-text);
        }

        .mega-card:hover {
            background: var(--color-bg);
            transform: translateX(3px);
        }

        .mega-card-icon {
            width: 42px;
            height: 42px;
            border-radius: var(--radius-sm);
            background: var(--color-accent-light);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-accent);
            font-size: 1rem;
            flex-shrink: 0;
        }

        .mega-card-info h4 {
            font-size: 0.93rem;
            font-weight: 600;
            color: var(--color-primary);
            margin-bottom: 3px;
        }

        .mega-card-info p {
            font-size: 0.8rem;
            color: var(--color-text-muted);
            line-height: 1.4;
            margin: 0;
        }

        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            align-items: center;
            justify-content: center;
            color: var(--color-primary);
            font-size: 1.3rem;
            transition: background var(--transition-fast);
        }

        .mobile-menu-toggle:hover {
            background: var(--color-bg);
        }

        .mobile-nav-overlay {
            display: none;
            position: fixed;
            top: var(--nav-height);
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(0,0,0,0.5);
            z-index: 999;
            opacity: 0;
            transition: opacity var(--transition-base);
        }

        .mobile-nav-overlay.open {
            opacity: 1;
        }

        .mobile-nav-panel {
            display: none;
            position: fixed;
            top: var(--nav-height);
            right: 0;
            width: 300px;
            max-width: 85vw;
            bottom: 0;
            background: var(--color-white);
            z-index: 1000;
            padding: 20px;
            overflow-y: auto;
            transform: translateX(100%);
            transition: transform var(--transition-base);
            box-shadow: var(--shadow-xl);
            flex-direction: column;
            gap: 8px;
        }

        .mobile-nav-panel.open {
            transform: translateX(0);
        }

        .mobile-nav-panel a {
            display: block;
            padding: 12px 16px;
            border-radius: var(--radius-md);
            font-weight: 500;
            font-size: 1rem;
            color: var(--color-text-secondary);
            transition: all var(--transition-fast);
        }

        .mobile-nav-panel a:hover,
        .mobile-nav-panel a.active {
            background: var(--color-accent-light);
            color: var(--color-primary);
            font-weight: 600;
        }

        .mobile-nav-panel .mega-card-simple {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 12px 16px;
            border-radius: var(--radius-md);
            background: var(--color-bg);
            margin-top: 4px;
        }

        .mobile-nav-panel .mega-card-simple .mega-card-icon {
            width: 36px;
            height: 36px;
        }

        .mobile-nav-panel .section-label {
            font-size: 0.75rem;
            text-transform: uppercase;
            letter-spacing: 0.06em;
            color: var(--color-text-muted);
            padding: 8px 16px 4px;
            font-weight: 600;
        }

        /* Article Banner */
        .article-banner {
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            position: relative;
            padding: 70px 0 56px;
            color: var(--color-white);
        }

        .article-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(27,31,59,0.82) 0%, rgba(27,31,59,0.9) 60%, rgba(27,31,59,0.95) 100%);
        }

        .article-banner .container-narrow {
            position: relative;
            z-index: 2;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
            font-size: 0.88rem;
            color: rgba(255,255,255,0.75);
            margin-bottom: 20px;
        }

        .breadcrumb a {
            color: rgba(255,255,255,0.85);
            transition: color var(--transition-fast);
            font-weight: 500;
        }

        .breadcrumb a:hover {
            color: var(--color-accent);
        }

        .breadcrumb .sep {
            color: rgba(255,255,255,0.4);
            font-size: 0.7rem;
        }

        .breadcrumb .current {
            color: var(--color-accent);
            font-weight: 500;
            max-width: 300px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        .article-banner .article-title {
            font-size: 2.3rem;
            font-weight: 700;
            line-height: 1.3;
            color: #FFFFFF;
            letter-spacing: -0.02em;
            margin-bottom: 16px;
        }

        .article-meta-row {
            display: flex;
            align-items: center;
            gap: 20px;
            flex-wrap: wrap;
            font-size: 0.9rem;
            color: rgba(255,255,255,0.7);
        }

        .article-meta-row .meta-item {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .article-meta-row .meta-item i {
            font-size: 0.85rem;
            color: var(--color-accent);
        }

        .article-category-tag {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            padding: 5px 14px;
            border-radius: var(--radius-full);
            background: rgba(212,168,83,0.2);
            color: var(--color-accent);
            font-weight: 600;
            font-size: 0.82rem;
            border: 1px solid rgba(212,168,83,0.35);
        }

        /* Main Content */
        .article-main {
            flex: 1;
            padding: 0 0 60px;
            margin-top: -30px;
            position: relative;
            z-index: 10;
        }

        .article-content-card {
            background: var(--color-white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
            padding: 48px 52px;
            margin-bottom: 40px;
        }

        .article-featured-image {
            width: 100%;
            border-radius: var(--radius-md);
            margin-bottom: 32px;
            overflow: hidden;
        }

        .article-featured-image img {
            width: 100%;
            height: auto;
            object-fit: cover;
            max-height: 480px;
            border-radius: var(--radius-md);
        }

        .article-body {
            font-size: 1.05rem;
            line-height: 1.85;
            color: var(--color-text);
        }

        .article-body h2 {
            font-size: 1.55rem;
            font-weight: 700;
            color: var(--color-primary);
            margin: 36px 0 16px;
            line-height: 1.35;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--color-border-light);
        }

        .article-body h3 {
            font-size: 1.25rem;
            font-weight: 600;
            color: var(--color-primary);
            margin: 28px 0 12px;
            line-height: 1.4;
        }

        .article-body p {
            margin-bottom: 18px;
        }

        .article-body ul,
        .article-body ol {
            margin: 16px 0 20px 24px;
        }

        .article-body li {
            margin-bottom: 8px;
            padding-left: 4px;
        }

        .article-body blockquote {
            border-left: 4px solid var(--color-accent);
            padding: 16px 20px;
            margin: 24px 0;
            background: var(--color-accent-light);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--color-text-secondary);
            font-style: italic;
        }

        .article-body img {
            max-width: 100%;
            border-radius: var(--radius-md);
            margin: 24px 0;
        }

        .article-body a {
            color: var(--color-blue);
            text-decoration: underline;
            text-underline-offset: 3px;
        }

        .article-body a:hover {
            color: var(--color-accent);
        }

        .article-body code {
            background: var(--color-bg);
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 0.9em;
            color: var(--color-primary);
        }

        .article-body pre {
            background: var(--color-primary);
            color: #e2e8f0;
            padding: 20px 24px;
            border-radius: var(--radius-md);
            overflow-x: auto;
            margin: 20px 0;
            font-size: 0.9rem;
            line-height: 1.6;
        }

        /* Not Found State */
        .not-found-state {
            text-align: center;
            padding: 60px 24px;
        }

        .not-found-state .nf-icon {
            font-size: 3.5rem;
            color: var(--color-text-light);
            margin-bottom: 20px;
        }

        .not-found-state h2 {
            font-size: 1.5rem;
            color: var(--color-primary);
            margin-bottom: 12px;
        }

        .not-found-state p {
            color: var(--color-text-muted);
            margin-bottom: 28px;
        }

        /* Related Section */
        .related-section {
            padding: 0 0 50px;
        }

        .related-section .section-label-text {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 24px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .related-section .section-label-text::before {
            content: '';
            width: 4px;
            height: 24px;
            background: var(--color-accent);
            border-radius: 2px;
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .related-card {
            background: var(--color-white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
        }

        .related-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
        }

        .related-card-image {
            width: 100%;
            height: 180px;
            overflow: hidden;
            position: relative;
        }

        .related-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }

        .related-card:hover .related-card-image img {
            transform: scale(1.06);
        }

        .related-card-body {
            padding: 20px 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .related-card-body h3 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--color-primary);
            line-height: 1.4;
            margin: 0;
        }

        .related-card-body p {
            font-size: 0.88rem;
            color: var(--color-text-muted);
            line-height: 1.5;
            margin: 0;
            flex: 1;
        }

        .related-card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--color-accent);
            transition: gap var(--transition-fast);
            margin-top: 4px;
        }

        .related-card-link:hover {
            gap: 10px;
            color: var(--color-accent-hover);
        }

        .related-card-link i {
            font-size: 0.75rem;
        }

        /* CTA Section */
        .cta-section {
            background: var(--color-primary);
            padding: 50px 0;
            margin-bottom: 0;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -80px;
            width: 280px;
            height: 280px;
            border-radius: 50%;
            background: rgba(212,168,83,0.08);
            z-index: 0;
        }

        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -50px;
            left: -60px;
            width: 220px;
            height: 220px;
            border-radius: 50%;
            background: rgba(59,130,246,0.06);
            z-index: 0;
        }

        .cta-inner {
            position: relative;
            z-index: 1;
            text-align: center;
            max-width: 650px;
            margin: 0 auto;
        }

        .cta-inner h2 {
            font-size: 1.7rem;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 12px;
        }

        .cta-inner p {
            font-size: 1rem;
            color: rgba(255,255,255,0.75);
            margin-bottom: 28px;
            line-height: 1.6;
        }

        .cta-buttons {
            display: flex;
            gap: 12px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: var(--radius-full);
            font-weight: 600;
            font-size: 0.95rem;
            transition: all var(--transition-base);
            cursor: pointer;
            border: none;
            white-space: nowrap;
            letter-spacing: 0.01em;
        }

        .btn-accent {
            background: var(--color-accent);
            color: var(--color-primary);
            box-shadow: 0 4px 14px rgba(212,168,83,0.35);
        }

        .btn-accent:hover {
            background: var(--color-accent-hover);
            box-shadow: 0 6px 20px rgba(212,168,83,0.45);
            transform: translateY(-2px);
        }

        .btn-outline-light {
            background: transparent;
            color: #FFFFFF;
            border: 2px solid rgba(255,255,255,0.4);
        }

        .btn-outline-light:hover {
            border-color: #FFFFFF;
            background: rgba(255,255,255,0.08);
            transform: translateY(-2px);
        }

        /* Footer */
        .site-footer {
            background: var(--color-primary);
            padding: 50px 0 0;
            color: rgba(255,255,255,0.8);
            font-size: 0.9rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 36px;
            padding-bottom: 36px;
            border-bottom: 1px solid rgba(255,255,255,0.12);
        }

        .footer-brand .logo-text {
            font-size: 1.15rem;
            font-weight: 700;
            color: #FFFFFF;
            display: block;
            margin-bottom: 10px;
        }

        .footer-brand p {
            line-height: 1.6;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.6);
        }

        .footer-col h4 {
            font-size: 0.9rem;
            font-weight: 600;
            color: #FFFFFF;
            margin-bottom: 14px;
            letter-spacing: 0.02em;
        }

        .footer-col a {
            display: block;
            padding: 5px 0;
            color: rgba(255,255,255,0.6);
            transition: color var(--transition-fast);
            font-size: 0.86rem;
        }

        .footer-col a:hover {
            color: var(--color-accent);
        }

        .footer-bottom {
            text-align: center;
            padding: 18px 0;
            font-size: 0.82rem;
            color: rgba(255,255,255,0.45);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .article-content-card {
                padding: 36px 32px;
            }
            .article-banner .article-title {
                font-size: 1.85rem;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }
            .mobile-menu-toggle {
                display: flex;
            }
            .mobile-nav-overlay {
                display: block;
                pointer-events: none;
            }
            .mobile-nav-overlay.open {
                pointer-events: auto;
            }
            .mobile-nav-panel {
                display: flex;
            }
            .article-banner {
                padding: 44px 0 36px;
            }
            .article-banner .article-title {
                font-size: 1.5rem;
            }
            .article-content-card {
                padding: 28px 20px;
                border-radius: var(--radius-md);
            }
            .article-body {
                font-size: 1rem;
            }
            .article-body h2 {
                font-size: 1.3rem;
            }
            .article-body h3 {
                font-size: 1.1rem;
            }
            .related-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .cta-inner h2 {
                font-size: 1.35rem;
            }
            .breadcrumb {
                font-size: 0.8rem;
            }
            .article-meta-row {
                gap: 12px;
                font-size: 0.82rem;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .container-narrow {
                padding: 0 16px;
            }
            .article-banner .article-title {
                font-size: 1.3rem;
            }
            .article-content-card {
                padding: 20px 16px;
            }
            .article-featured-image img {
                max-height: 240px;
            }
            .btn {
                padding: 11px 22px;
                font-size: 0.88rem;
            }
            .cta-buttons {
                flex-direction: column;
                align-items: center;
            }
            .related-card-image {
                height: 160px;
            }
        }

/* roulang page: category1 */
:root {
            --color-primary: #1e3a5f;
            --color-primary-light: #2c5282;
            --color-accent: #e8871e;
            --color-accent-hover: #c97218;
            --color-accent-light: #fdf0e3;
            --color-bg: #f6f8fb;
            --color-white: #ffffff;
            --color-text: #1a1d23;
            --color-text-secondary: #556278;
            --color-text-muted: #8896a8;
            --color-border: #e2e7ef;
            --color-border-light: #eef1f6;
            --color-success: #10a861;
            --color-card-shadow: 0 2px 12px rgba(30, 58, 95, 0.07);
            --color-card-shadow-hover: 0 8px 32px rgba(30, 58, 95, 0.13);
            --color-nav-shadow: 0 1px 8px rgba(30, 58, 95, 0.06);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 18px;
            --radius-xl: 24px;
            --radius-full: 9999px;
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', system-ui, -apple-system, sans-serif;
            --transition-fast: 0.18s ease;
            --transition-base: 0.28s ease;
            --transition-slow: 0.4s ease;
            --container-max: 1200px;
            --container-narrow: 960px;
            --section-gap: 80px;
            --section-gap-sm: 52px;
            --nav-height: 68px;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
            font-size: 16px;
        }

        body {
            font-family: var(--font-sans);
            font-size: 1rem;
            line-height: 1.68;
            color: var(--color-text);
            background-color: var(--color-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            min-height: 100vh;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--color-accent);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            font-weight: 700;
            color: var(--color-text);
        }
        ul,
        ol {
            list-style: none;
            padding: 0;
        }

        .container {
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        .container--narrow {
            max-width: var(--container-narrow);
        }

        .section {
            padding-top: var(--section-gap);
            padding-bottom: var(--section-gap);
        }
        .section--sm {
            padding-top: var(--section-gap-sm);
            padding-bottom: var(--section-gap-sm);
        }
        .section--alt {
            background-color: var(--color-white);
        }
        .section--dark {
            background-color: var(--color-primary);
            color: #ffffff;
        }
        .section--dark h2,
        .section--dark h3,
        .section--dark h4 {
            color: #ffffff;
        }
        .section--dark .section-subtitle {
            color: rgba(255, 255, 255, 0.78);
        }

        .section-label {
            display: inline-block;
            font-size: 0.82rem;
            font-weight: 700;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            color: var(--color-accent);
            background: var(--color-accent-light);
            padding: 6px 16px;
            border-radius: var(--radius-full);
            margin-bottom: 14px;
        }
        .section-title {
            font-size: 2.2rem;
            font-weight: 800;
            margin-bottom: 10px;
            letter-spacing: -0.02em;
        }
        .section-subtitle {
            font-size: 1.08rem;
            color: var(--color-text-secondary);
            max-width: 640px;
            margin: 0 auto 0 0;
            line-height: 1.6;
        }
        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-header .section-subtitle {
            margin: 0 auto;
        }
        .section-header .section-label {
            margin-left: auto;
            margin-right: auto;
        }

        /* ========== HEADER / NAV ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--color-white);
            border-bottom: 1px solid var(--color-border-light);
            box-shadow: var(--color-nav-shadow);
            height: var(--nav-height);
            display: flex;
            align-items: center;
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .header-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.32rem;
            font-weight: 800;
            color: var(--color-primary);
            letter-spacing: -0.01em;
            white-space: nowrap;
            flex-shrink: 0;
        }
        .header-logo i {
            font-size: 1.6rem;
            color: var(--color-accent);
        }
        .header-logo:hover {
            color: var(--color-primary-light);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-links>a {
            display: inline-flex;
            align-items: center;
            padding: 10px 18px;
            border-radius: var(--radius-full);
            font-weight: 600;
            font-size: 0.96rem;
            color: var(--color-text-secondary);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .nav-links>a:hover {
            color: var(--color-primary);
            background: rgba(30, 58, 95, 0.04);
        }
        .nav-links>a.active {
            color: var(--color-white);
            background: var(--color-primary);
            font-weight: 700;
            box-shadow: 0 2px 8px rgba(30, 58, 95, 0.22);
        }
        .nav-links>a.active:hover {
            background: var(--color-primary-light);
            color: var(--color-white);
        }

        .nav-mega-trigger {
            position: relative;
        }
        .nav-mega-trigger>a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 18px;
            border-radius: var(--radius-full);
            font-weight: 600;
            font-size: 0.96rem;
            color: var(--color-text-secondary);
            transition: all var(--transition-fast);
            cursor: pointer;
            white-space: nowrap;
        }
        .nav-mega-trigger>a:hover {
            color: var(--color-primary);
            background: rgba(30, 58, 95, 0.04);
        }
        .nav-mega-trigger .arrow-icon {
            font-size: 0.7rem;
            transition: transform var(--transition-fast);
            display: inline-flex;
        }
        .mega-panel {
            position: absolute;
            top: calc(100% + 10px);
            right: 0;
            background: var(--color-white);
            border-radius: var(--radius-lg);
            box-shadow: 0 16px 48px rgba(30, 58, 95, 0.16);
            padding: 16px;
            display: flex;
            flex-direction: column;
            gap: 8px;
            min-width: 300px;
            opacity: 0;
            visibility: hidden;
            transform: translateY(-8px);
            transition: all var(--transition-base);
            z-index: 1001;
            border: 1px solid var(--color-border-light);
        }
        .nav-mega-trigger:hover .mega-panel {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }
        .nav-mega-trigger:hover .arrow-icon {
            transform: rotate(180deg);
        }
        .mega-card {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            padding: 14px 16px;
            border-radius: var(--radius-md);
            transition: all var(--transition-fast);
            text-decoration: none;
            color: var(--color-text);
        }
        .mega-card:hover {
            background: var(--color-bg);
            color: var(--color-text);
        }
        .mega-card-icon {
            flex-shrink: 0;
            width: 44px;
            height: 44px;
            border-radius: var(--radius-sm);
            background: var(--color-accent-light);
            color: var(--color-accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
        }
        .mega-card-info h4 {
            font-size: 0.94rem;
            font-weight: 700;
            margin-bottom: 2px;
            color: var(--color-text);
        }
        .mega-card-info p {
            font-size: 0.8rem;
            color: var(--color-text-muted);
            line-height: 1.4;
        }

        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            padding: 8px;
            font-size: 1.5rem;
            color: var(--color-primary);
            line-height: 1;
        }

        /* ========== HERO ========== */
        .hero-category {
            position: relative;
            background: linear-gradient(135deg, #142b44 0%, #1e3a5f 40%, #1a3554 100%);
            color: #ffffff;
            padding: 90px 0 80px;
            overflow: hidden;
            min-height: 480px;
            display: flex;
            align-items: center;
        }
        .hero-category::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.28;
            z-index: 0;
        }
        .hero-category::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 120px;
            background: linear-gradient(to top, rgba(20, 43, 68, 0.7), transparent);
            z-index: 1;
            pointer-events: none;
        }
        .hero-category .container {
            position: relative;
            z-index: 2;
            display: flex;
            align-items: center;
            gap: 48px;
        }
        .hero-category-content {
            flex: 1;
        }
        .hero-category-content .hero-badge {
            display: inline-block;
            background: rgba(255, 255, 255, 0.14);
            backdrop-filter: blur(6px);
            -webkit-backdrop-filter: blur(6px);
            color: #ffd28c;
            font-weight: 700;
            font-size: 0.84rem;
            padding: 7px 18px;
            border-radius: var(--radius-full);
            letter-spacing: 0.04em;
            margin-bottom: 20px;
            border: 1px solid rgba(255, 255, 255, 0.18);
        }
        .hero-category-content h1 {
            font-size: 2.9rem;
            font-weight: 800;
            color: #ffffff;
            margin-bottom: 16px;
            letter-spacing: -0.025em;
            line-height: 1.2;
        }
        .hero-category-content h1 .highlight {
            color: #ffd28c;
        }
        .hero-category-content .hero-desc {
            font-size: 1.12rem;
            color: rgba(255, 255, 255, 0.82);
            max-width: 540px;
            line-height: 1.7;
            margin-bottom: 28px;
        }
        .hero-category-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: var(--radius-full);
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            border: none;
            transition: all var(--transition-base);
            white-space: nowrap;
            text-align: center;
            justify-content: center;
        }
        .btn-primary {
            background: var(--color-accent);
            color: #ffffff;
            box-shadow: 0 4px 16px rgba(232, 135, 30, 0.36);
        }
        .btn-primary:hover {
            background: var(--color-accent-hover);
            color: #ffffff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(232, 135, 30, 0.46);
        }
        .btn-outline-light {
            background: transparent;
            color: #ffffff;
            border: 2px solid rgba(255, 255, 255, 0.5);
        }
        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #ffffff;
            color: #ffffff;
            transform: translateY(-2px);
        }
        .btn-lg {
            padding: 16px 34px;
            font-size: 1.08rem;
        }
        .btn-sm {
            padding: 9px 18px;
            font-size: 0.88rem;
        }
        .hero-category-visual {
            flex-shrink: 0;
            width: 340px;
            height: 340px;
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
            border: 3px solid rgba(255, 255, 255, 0.2);
        }
        .hero-category-visual img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        /* ========== CARDS GRID ========== */
        .cards-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(270px, 1fr));
            gap: 24px;
        }
        .cards-grid--3 {
            grid-template-columns: repeat(3, 1fr);
        }
        .cards-grid--4 {
            grid-template-columns: repeat(4, 1fr);
        }
        .card {
            background: var(--color-white);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            box-shadow: var(--color-card-shadow);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
        }
        .card:hover {
            transform: translateY(-4px);
            box-shadow: var(--color-card-shadow-hover);
            border-color: transparent;
        }
        .card-icon-wrap {
            width: 56px;
            height: 56px;
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            margin-bottom: 18px;
            flex-shrink: 0;
        }
        .card-icon-wrap--accent {
            background: var(--color-accent-light);
            color: var(--color-accent);
        }
        .card-icon-wrap--primary {
            background: rgba(30, 58, 95, 0.08);
            color: var(--color-primary);
        }
        .card-icon-wrap--success {
            background: rgba(16, 168, 97, 0.1);
            color: var(--color-success);
        }
        .card h3 {
            font-size: 1.14rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .card p {
            font-size: 0.92rem;
            color: var(--color-text-secondary);
            line-height: 1.6;
            flex-grow: 1;
        }
        .card .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 700;
            font-size: 0.9rem;
            color: var(--color-accent);
            margin-top: 14px;
            transition: gap var(--transition-fast);
        }
        .card .card-link:hover {
            gap: 10px;
            color: var(--color-accent-hover);
        }

        /* ========== IMAGE CARD ========== */
        .card-image-top {
            border-radius: var(--radius-lg) var(--radius-lg) 0 0;
            overflow: hidden;
            aspect-ratio: 16 / 10;
            margin: -28px -24px 18px -24px;
        }
        .card-image-top img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .card:hover .card-image-top img {
            transform: scale(1.04);
        }

        /* ========== FEATURE ROW ========== */
        .feature-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 52px;
            align-items: center;
        }
        .feature-row.reverse {
            direction: rtl;
        }
        .feature-row.reverse>* {
            direction: ltr;
        }
        .feature-image-wrap {
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: var(--color-card-shadow-hover);
            aspect-ratio: 4 / 3;
        }
        .feature-image-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .feature-text h2 {
            font-size: 1.8rem;
            font-weight: 800;
            margin-bottom: 14px;
        }
        .feature-text p {
            color: var(--color-text-secondary);
            line-height: 1.7;
            margin-bottom: 10px;
            font-size: 0.98rem;
        }
        .feature-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
            margin-top: 16px;
        }
        .feature-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 0.94rem;
            color: var(--color-text-secondary);
        }
        .feature-list li i {
            color: var(--color-success);
            font-size: 1.05rem;
            margin-top: 2px;
            flex-shrink: 0;
        }

        /* ========== STATS ROW ========== */
        .stats-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            text-align: center;
        }
        .stat-item {
            background: var(--color-white);
            border-radius: var(--radius-lg);
            padding: 32px 20px;
            box-shadow: var(--color-card-shadow);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-base);
        }
        .stat-item:hover {
            transform: translateY(-3px);
            box-shadow: var(--color-card-shadow-hover);
        }
        .stat-number {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--color-primary);
            line-height: 1;
            margin-bottom: 8px;
            letter-spacing: -0.02em;
        }
        .stat-number .accent {
            color: var(--color-accent);
        }
        .stat-label {
            font-size: 0.9rem;
            color: var(--color-text-muted);
            font-weight: 500;
        }

        /* ========== FLOW STEPS ========== */
        .flow-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            position: relative;
        }
        .flow-step {
            text-align: center;
            position: relative;
            z-index: 1;
        }
        .flow-step-circle {
            width: 64px;
            height: 64px;
            border-radius: var(--radius-full);
            background: var(--color-white);
            border: 3px solid var(--color-border);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--color-primary);
            margin: 0 auto 16px;
            transition: all var(--transition-base);
            position: relative;
            z-index: 2;
        }
        .flow-step:hover .flow-step-circle {
            border-color: var(--color-accent);
            color: var(--color-accent);
            box-shadow: 0 0 0 10px var(--color-accent-light);
        }
        .flow-step h4 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .flow-step p {
            font-size: 0.86rem;
            color: var(--color-text-muted);
            line-height: 1.5;
        }
        .flow-steps::before {
            content: '';
            position: absolute;
            top: 32px;
            left: 12%;
            right: 12%;
            height: 2px;
            background: var(--color-border);
            z-index: 0;
        }
        .flow-steps::after {
            content: '';
            position: absolute;
            top: 32px;
            left: 12%;
            width: 0;
            height: 2px;
            background: var(--color-accent);
            z-index: 1;
            transition: width var(--transition-slow);
        }
        .flow-steps:hover::after {
            width: 76%;
        }

        /* ========== FAQ ========== */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--color-white);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border-light);
            overflow: hidden;
            transition: all var(--transition-fast);
            box-shadow: var(--color-card-shadow);
        }
        .faq-item:hover {
            border-color: var(--color-border);
        }
        .faq-question {
            width: 100%;
            background: none;
            border: none;
            padding: 20px 24px;
            text-align: left;
            font-weight: 700;
            font-size: 1rem;
            color: var(--color-text);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            line-height: 1.4;
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 32px;
            height: 32px;
            border-radius: var(--radius-full);
            background: var(--color-bg);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.8rem;
            color: var(--color-text-muted);
            transition: all var(--transition-fast);
        }
        .faq-item.active .faq-icon {
            background: var(--color-accent);
            color: #ffffff;
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-base), padding var(--transition-base);
            padding: 0 24px;
            font-size: 0.92rem;
            color: var(--color-text-secondary);
            line-height: 1.7;
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            background: linear-gradient(135deg, #1e3a5f 0%, #162d4a 100%);
            border-radius: var(--radius-xl);
            padding: 56px 48px;
            text-align: center;
            color: #ffffff;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            opacity: 0.13;
            z-index: 0;
        }
        .cta-section>* {
            position: relative;
            z-index: 1;
        }
        .cta-section h2 {
            font-size: 2rem;
            font-weight: 800;
            color: #ffffff;
            margin-bottom: 12px;
        }
        .cta-section p {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.78);
            max-width: 520px;
            margin: 0 auto 28px;
            line-height: 1.6;
        }
        .cta-section .btn-primary {
            font-size: 1.1rem;
            padding: 16px 38px;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: #111827;
            color: #c9cdd4;
            padding: 52px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 36px;
            padding-bottom: 36px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-brand .logo-text {
            font-size: 1.24rem;
            font-weight: 800;
            color: #ffffff;
            display: block;
            margin-bottom: 10px;
            letter-spacing: -0.01em;
        }
        .footer-brand p {
            font-size: 0.88rem;
            line-height: 1.7;
            color: #9ca3af;
        }
        .footer-col h4 {
            font-size: 0.94rem;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 14px;
        }
        .footer-col a {
            display: block;
            font-size: 0.88rem;
            color: #9ca3af;
            padding: 5px 0;
            transition: color var(--transition-fast);
        }
        .footer-col a:hover {
            color: #ffd28c;
        }
        .footer-bottom {
            text-align: center;
            padding: 20px 0;
            font-size: 0.82rem;
            color: #6b7280;
        }

        /* ========== MOBILE NAV ========== */
        @media (max-width: 1024px) {
            .cards-grid--4 {
                grid-template-columns: repeat(2, 1fr);
            }
            .cards-grid--3 {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-row {
                grid-template-columns: repeat(2, 1fr);
            }
            .flow-steps {
                grid-template-columns: repeat(2, 1fr);
                gap: 28px;
            }
            .flow-steps::before,
            .flow-steps::after {
                display: none;
            }
            .feature-row {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .hero-category .container {
                flex-direction: column;
                text-align: center;
            }
            .hero-category-content .hero-desc {
                margin-left: auto;
                margin-right: auto;
            }
            .hero-category-actions {
                justify-content: center;
            }
            .hero-category-visual {
                width: 240px;
                height: 240px;
            }
            .hero-category-content h1 {
                font-size: 2.2rem;
            }
        }

        @media (max-width: 768px) {
            :root {
                --section-gap: 52px;
                --section-gap-sm: 36px;
                --nav-height: 60px;
            }
            .section-title {
                font-size: 1.6rem;
            }
            .mobile-menu-toggle {
                display: block;
            }
            .nav-links {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: var(--color-white);
                flex-direction: column;
                padding: 20px 24px;
                gap: 4px;
                box-shadow: 0 12px 32px rgba(0, 0, 0, 0.12);
                border-bottom: 2px solid var(--color-border-light);
                transform: translateY(-120%);
                opacity: 0;
                transition: all var(--transition-base);
                z-index: 999;
                align-items: stretch;
            }
            .nav-links.open {
                transform: translateY(0);
                opacity: 1;
            }
            .nav-links>a {
                padding: 13px 18px;
                border-radius: var(--radius-sm);
                font-size: 1rem;
                justify-content: center;
            }
            .nav-mega-trigger>a {
                justify-content: center;
                width: 100%;
            }
            .mega-panel {
                position: static;
                box-shadow: none;
                border: none;
                padding: 8px 0;
                min-width: auto;
                opacity: 1;
                visibility: visible;
                transform: none;
                background: transparent;
            }
            .mega-card {
                padding: 10px 14px;
                background: var(--color-bg);
                border-radius: var(--radius-sm);
                margin-bottom: 4px;
            }
            .cards-grid,
            .cards-grid--3,
            .cards-grid--4 {
                grid-template-columns: 1fr;
            }
            .stats-row {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .flow-steps {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .hero-category {
                padding: 56px 0 48px;
                min-height: auto;
            }
            .hero-category-content h1 {
                font-size: 1.8rem;
            }
            .hero-category-visual {
                width: 180px;
                height: 180px;
            }
            .cta-section {
                padding: 36px 20px;
                border-radius: var(--radius-lg);
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .btn-lg {
                padding: 14px 26px;
                font-size: 0.96rem;
            }
            .stat-number {
                font-size: 2rem;
            }
            .feature-text h2 {
                font-size: 1.4rem;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .hero-category-content h1 {
                font-size: 1.5rem;
            }
            .hero-category-visual {
                width: 140px;
                height: 140px;
            }
            .stats-row {
                grid-template-columns: 1fr 1fr;
                gap: 8px;
            }
            .stat-item {
                padding: 20px 12px;
            }
            .stat-number {
                font-size: 1.7rem;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .cta-section {
                padding: 28px 16px;
            }
            .btn {
                padding: 11px 20px;
                font-size: 0.9rem;
            }
            .card {
                padding: 20px 16px;
            }
            .card-image-top {
                margin: -20px -16px 14px -16px;
            }
        }

/* roulang page: category2 */
:root {
            --primary: #1a3650;
            --primary-light: #254e6b;
            --primary-dark: #0f1f2e;
            --accent: #d4953a;
            --accent-light: #e8b860;
            --accent-dark: #b07828;
            --bg: #f7f5f2;
            --bg-white: #ffffff;
            --bg-light: #faf9f7;
            --bg-dark: #1a1d22;
            --text: #1e1e1e;
            --text-secondary: #5c5c5c;
            --text-light: #7a7a7a;
            --text-on-dark: #e8e6e2;
            --border: #e0dcd5;
            --border-light: #eeeae4;
            --radius-sm: 6px;
            --radius: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
            --shadow: 0 4px 16px rgba(0, 0, 0, 0.07);
            --shadow-md: 0 8px 28px rgba(0, 0, 0, 0.09);
            --shadow-lg: 0 16px 44px rgba(0, 0, 0, 0.11);
            --shadow-xl: 0 24px 60px rgba(0, 0, 0, 0.14);
            --transition: 0.22s ease;
            --transition-slow: 0.35s ease;
            --font-heading: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
            --font-body: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
            --max-width: 1200px;
            --nav-height: 68px;
        }

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

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

        body {
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background-color: var(--bg);
            min-height: 100vh;
            overflow-x: hidden;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius);
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition);
        }

        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            outline: none;
        }

        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }

        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ==================== HEADER & NAV ==================== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            height: var(--nav-height);
            display: flex;
            align-items: center;
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }

        .logo-wrap {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
            font-weight: 700;
        }

        .logo-text {
            font-family: var(--font-heading);
            font-size: 1.18rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-links>a {
            display: inline-flex;
            align-items: center;
            padding: 9px 16px;
            border-radius: var(--radius);
            font-size: 0.94rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition);
            white-space: nowrap;
            position: relative;
        }

        .nav-links>a:hover {
            color: var(--primary);
            background: rgba(26, 54, 80, 0.04);
        }

        .nav-links>a.active {
            color: var(--primary);
            font-weight: 600;
            background: rgba(26, 54, 80, 0.06);
        }

        .nav-links>a.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 24px;
            height: 3px;
            border-radius: 3px;
            background: var(--accent);
        }

        .nav-mega-trigger {
            position: relative;
        }

        .nav-mega-trigger>a {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            padding: 9px 16px;
            border-radius: var(--radius);
            font-size: 0.94rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition);
            white-space: nowrap;
        }

        .nav-mega-trigger>a:hover {
            color: var(--primary);
            background: rgba(26, 54, 80, 0.04);
        }

        .arrow-icon {
            font-size: 0.65rem;
            transition: transform var(--transition);
            display: inline-flex;
        }

        .nav-mega-trigger:hover .arrow-icon {
            transform: rotate(180deg);
        }

        .mega-panel {
            position: absolute;
            top: 100%;
            right: 0;
            margin-top: 8px;
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-lg);
            padding: 14px 10px;
            display: flex;
            flex-direction: column;
            gap: 6px;
            min-width: 280px;
            opacity: 0;
            visibility: hidden;
            transform: translateY(8px);
            transition: all var(--transition-slow);
            border: 1px solid var(--border-light);
            z-index: 999;
        }

        .nav-mega-trigger:hover .mega-panel {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }

        .mega-card {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 12px 14px;
            border-radius: var(--radius);
            transition: all var(--transition);
            text-decoration: none;
            color: inherit;
        }

        .mega-card:hover {
            background: rgba(26, 54, 80, 0.04);
        }

        .mega-card-icon {
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            background: rgba(212, 149, 58, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent);
            font-size: 1rem;
            flex-shrink: 0;
        }

        .mega-card-info h4 {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text);
            margin: 0 0 3px;
        }

        .mega-card-info p {
            font-size: 0.78rem;
            color: var(--text-light);
            margin: 0;
            line-height: 1.4;
        }

        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--text);
            cursor: pointer;
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: background var(--transition);
        }

        .mobile-menu-toggle:hover {
            background: rgba(0, 0, 0, 0.04);
        }

        /* ==================== HERO ==================== */
        .page-hero {
            position: relative;
            background: linear-gradient(170deg, #1a3650 0%, #1e425e 30%, #1a3650 70%, #0f1f2e 100%);
            min-height: 460px;
            display: flex;
            align-items: center;
            overflow: hidden;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            opacity: 0.18;
            pointer-events: none;
        }

        .page-hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 80px;
            background: linear-gradient(to top, var(--bg) 0%, transparent 100%);
            pointer-events: none;
        }

        .page-hero .container {
            position: relative;
            z-index: 2;
            text-align: center;
            padding-top: 40px;
            padding-bottom: 50px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.2);
            color: #f0e6d2;
            padding: 7px 18px;
            border-radius: 30px;
            font-size: 0.85rem;
            font-weight: 500;
            letter-spacing: 0.04em;
            margin-bottom: 22px;
        }

        .hero-badge i {
            color: var(--accent-light);
            font-size: 0.8rem;
        }

        .page-hero h1 {
            font-family: var(--font-heading);
            font-size: 2.8rem;
            font-weight: 800;
            color: #ffffff;
            margin: 0 0 16px;
            letter-spacing: 0.03em;
            line-height: 1.25;
        }

        .page-hero h1 .highlight {
            color: var(--accent-light);
            position: relative;
        }

        .page-hero .hero-subtitle {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.82);
            max-width: 620px;
            margin: 0 auto 30px;
            line-height: 1.7;
        }

        .hero-cta-row {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: 30px;
            font-size: 0.98rem;
            font-weight: 600;
            letter-spacing: 0.02em;
            transition: all var(--transition);
            text-decoration: none;
            cursor: pointer;
            border: 2px solid transparent;
            white-space: nowrap;
        }

        .btn-primary {
            background: var(--accent);
            color: #fff;
            border-color: var(--accent);
            box-shadow: 0 4px 18px rgba(212, 149, 58, 0.35);
        }

        .btn-primary:hover {
            background: var(--accent-dark);
            border-color: var(--accent-dark);
            box-shadow: 0 8px 26px rgba(212, 149, 58, 0.45);
            transform: translateY(-2px);
        }

        .btn-outline-light {
            background: transparent;
            color: #fff;
            border-color: rgba(255, 255, 255, 0.5);
        }

        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(255, 255, 255, 0.75);
            transform: translateY(-2px);
        }

        .btn-primary:focus-visible,
        .btn-outline-light:focus-visible {
            outline: 3px solid rgba(212, 149, 58, 0.6);
            outline-offset: 3px;
        }

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

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

        .section-label {
            display: inline-block;
            font-size: 0.82rem;
            font-weight: 600;
            letter-spacing: 0.06em;
            color: var(--accent);
            text-transform: uppercase;
            margin-bottom: 10px;
        }

        .section-title {
            font-family: var(--font-heading);
            font-size: 2rem;
            font-weight: 700;
            color: var(--text);
            margin: 0 0 12px;
            letter-spacing: 0.02em;
            line-height: 1.3;
        }

        .section-subtitle {
            font-size: 1rem;
            color: var(--text-secondary);
            max-width: 580px;
            margin: 0 auto;
            line-height: 1.6;
        }

        /* ==================== STEPS / PROCESS ==================== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
            counter-reset: step-counter;
        }

        .step-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 32px 24px 28px;
            text-align: center;
            box-shadow: var(--shadow);
            border: 1px solid var(--border-light);
            position: relative;
            transition: all var(--transition);
            counter-increment: step-counter;
        }

        .step-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
            border-color: var(--border);
        }

        .step-card::before {
            content: counter(step-counter);
            position: absolute;
            top: -18px;
            left: 50%;
            transform: translateX(-50%);
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-weight: 700;
            font-size: 0.9rem;
            display: flex;
            align-items: center;
            justify-content: center;
            z-index: 3;
            box-shadow: 0 3px 10px rgba(26, 54, 80, 0.3);
        }

        .step-icon {
            width: 60px;
            height: 60px;
            border-radius: 50%;
            background: rgba(212, 149, 58, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
            font-size: 1.5rem;
            color: var(--accent);
        }

        .step-card h3 {
            font-family: var(--font-heading);
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text);
            margin: 0 0 8px;
        }

        .step-card p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin: 0;
            line-height: 1.6;
        }

        /* ==================== FEATURE CARDS ==================== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .feature-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 28px 28px 24px;
            display: flex;
            gap: 18px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            align-items: flex-start;
        }

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

        .feature-card-icon {
            width: 48px;
            height: 48px;
            border-radius: var(--radius);
            background: rgba(26, 54, 80, 0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.25rem;
            color: var(--primary);
            flex-shrink: 0;
        }

        .feature-card-info h3 {
            font-family: var(--font-heading);
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text);
            margin: 0 0 6px;
        }

        .feature-card-info p {
            font-size: 0.88rem;
            color: var(--text-secondary);
            margin: 0;
            line-height: 1.6;
        }

        /* ==================== IMAGE + TEXT BLOCK ==================== */
        .split-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }

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

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

        .split-image-wrap {
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            position: relative;
        }

        .split-image-wrap img {
            width: 100%;
            height: auto;
            border-radius: var(--radius-xl);
            object-fit: cover;
        }

        .split-image-accent {
            position: absolute;
            bottom: -14px;
            right: -14px;
            width: 80px;
            height: 80px;
            border-radius: 50%;
            background: var(--accent);
            opacity: 0.3;
            pointer-events: none;
            z-index: -1;
        }

        .split-text h2 {
            font-family: var(--font-heading);
            font-size: 1.7rem;
            font-weight: 700;
            color: var(--text);
            margin: 0 0 14px;
            line-height: 1.35;
        }

        .split-text p {
            font-size: 0.98rem;
            color: var(--text-secondary);
            margin: 0 0 16px;
            line-height: 1.7;
        }

        .split-text .btn {
            margin-top: 8px;
        }

        /* ==================== FAQ ==================== */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: var(--bg-white);
            border-radius: var(--radius);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: all var(--transition);
            box-shadow: var(--shadow-sm);
        }

        .faq-item:hover {
            border-color: var(--border);
            box-shadow: var(--shadow);
            transform: translateY(-1px);
        }

        .faq-question {
            width: 100%;
            background: none;
            border: none;
            padding: 18px 22px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text);
            text-align: left;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            cursor: pointer;
            transition: color var(--transition);
            font-family: var(--font-body);
        }

        .faq-question:hover {
            color: var(--primary);
        }

        .faq-question i {
            font-size: 0.75rem;
            color: var(--text-light);
            transition: transform var(--transition);
            flex-shrink: 0;
        }

        .faq-item.open .faq-question i {
            transform: rotate(180deg);
            color: var(--accent);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
        }

        .faq-answer-inner {
            padding: 0 22px 18px;
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* ==================== CTA ==================== */
        .cta-section {
            background: linear-gradient(160deg, #1a3650 0%, #1e425e 50%, #162d42 100%);
            border-radius: var(--radius-xl);
            padding: 50px 40px;
            text-align: center;
            position: relative;
            overflow: hidden;
            margin: 0 0 70px;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            opacity: 0.12;
            pointer-events: none;
        }

        .cta-section .container {
            position: relative;
            z-index: 2;
        }

        .cta-section h2 {
            font-family: var(--font-heading);
            font-size: 2rem;
            font-weight: 700;
            color: #fff;
            margin: 0 0 12px;
        }

        .cta-section p {
            color: rgba(255, 255, 255, 0.8);
            font-size: 1.05rem;
            margin: 0 auto 24px;
            max-width: 500px;
            line-height: 1.6;
        }

        .cta-section .btn-primary {
            font-size: 1rem;
            padding: 14px 34px;
        }

        /* ==================== FOOTER ==================== */
        .site-footer {
            background: var(--bg-dark);
            color: var(--text-on-dark);
            padding: 50px 0 28px;
            margin-top: 10px;
        }

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

        .footer-brand .logo-text {
            color: #f0e6d2;
            font-size: 1.2rem;
            display: inline-block;
            margin-bottom: 12px;
        }

        .footer-brand p {
            font-size: 0.88rem;
            color: #b0aca5;
            line-height: 1.6;
            margin: 0;
        }

        .footer-col h4 {
            font-size: 0.9rem;
            font-weight: 700;
            color: #e0dcd4;
            margin: 0 0 14px;
            letter-spacing: 0.04em;
        }

        .footer-col a {
            display: block;
            font-size: 0.86rem;
            color: #a09b92;
            padding: 5px 0;
            transition: color var(--transition);
            text-decoration: none;
        }

        .footer-col a:hover {
            color: var(--accent-light);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            text-align: center;
            font-size: 0.82rem;
            color: #7a7670;
        }

        /* ==================== RESPONSIVE ==================== */
        @media (max-width: 1024px) {
            .steps-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 20px;
            }
            .features-grid {
                grid-template-columns: 1fr 1fr;
                gap: 18px;
            }
            .split-block {
                gap: 32px;
            }
            .page-hero h1 {
                font-size: 2.2rem;
            }
            .section-title {
                font-size: 1.7rem;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: var(--bg-white);
                flex-direction: column;
                gap: 0;
                padding: 12px 20px;
                box-shadow: var(--shadow-lg);
                border-bottom: 2px solid var(--border-light);
                display: none;
                z-index: 999;
                max-height: calc(100vh - var(--nav-height));
                overflow-y: auto;
            }
            .nav-links.mobile-open {
                display: flex;
            }
            .nav-links>a {
                padding: 12px 10px;
                border-radius: var(--radius-sm);
                width: 100%;
                font-size: 0.95rem;
            }
            .nav-links>a.active::after {
                display: none;
            }
            .nav-links>a.active {
                background: rgba(26, 54, 80, 0.08);
            }
            .nav-mega-trigger {
                width: 100%;
            }
            .nav-mega-trigger>a {
                width: 100%;
                padding: 12px 10px;
                border-radius: var(--radius-sm);
            }
            .mega-panel {
                position: static;
                box-shadow: none;
                border: none;
                padding: 0 0 0 16px;
                margin-top: 0;
                opacity: 1;
                visibility: visible;
                transform: none;
                min-width: auto;
                background: transparent;
            }
            .mega-card {
                padding: 8px 10px;
            }
            .mobile-menu-toggle {
                display: block;
            }
            .page-hero {
                min-height: 380px;
            }
            .page-hero h1 {
                font-size: 1.75rem;
            }
            .page-hero .hero-subtitle {
                font-size: 0.95rem;
            }
            .steps-grid {
                grid-template-columns: 1fr;
                gap: 22px;
            }
            .step-card {
                padding: 28px 20px 22px;
            }
            .features-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .split-block {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .split-block.reverse {
                direction: ltr;
            }
            .section {
                padding: 44px 0;
            }
            .section-title {
                font-size: 1.45rem;
            }
            .cta-section {
                padding: 34px 20px;
                border-radius: var(--radius-lg);
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 22px;
                text-align: center;
            }
            .footer-col a {
                text-align: center;
            }
            .btn {
                padding: 11px 22px;
                font-size: 0.9rem;
            }
        }

        @media (max-width: 520px) {
            .page-hero h1 {
                font-size: 1.45rem;
            }
            .hero-cta-row {
                flex-direction: column;
                align-items: center;
            }
            .hero-cta-row .btn {
                width: 100%;
                justify-content: center;
            }
            .section-title {
                font-size: 1.3rem;
            }
            .step-card h3 {
                font-size: 1rem;
            }
            .feature-card {
                flex-direction: column;
                align-items: center;
                text-align: center;
                padding: 22px 18px 20px;
            }
            .mega-card {
                flex-direction: column;
                align-items: center;
                text-align: center;
            }
            .container {
                padding: 0 16px;
            }
        }