/* roulang page: index */
:root {
            --color-primary: #0b1e33;
            --color-accent: #0ea5e9;
            --color-gold: #f59e0b;
            --color-bg: #f8fafc;
            --color-text: #1e293b;
            --color-muted: #64748b;
            --color-border: #e2e8f0;
            --radius: 16px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 6px 20px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.10);
        }

        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            color: var(--color-text);
            background: var(--color-bg);
            line-height: 1.7;
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.2s ease;
        }

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

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 10px;
            font-weight: 600;
            font-size: 15px;
            line-height: 1.5;
            border: 1.5px solid transparent;
            cursor: pointer;
            transition: all 0.25s ease;
            text-align: center;
        }

        .btn-primary {
            background: #0ea5e9;
            color: #fff;
            box-shadow: 0 4px 16px rgba(14, 165, 233, 0.35);
        }

        .btn-primary:hover {
            background: #0b84c1;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(14, 165, 233, 0.4);
        }

        .btn-primary:focus-visible,
        .btn-outline:focus-visible {
            outline: 3px solid rgba(14, 165, 233, 0.4);
            outline-offset: 2px;
        }

        .btn-outline {
            background: transparent;
            color: #0b1e33;
            border-color: #cbd5e1;
        }

        .btn-outline:hover {
            border-color: #0ea5e9;
            color: #0ea5e9;
            transform: translateY(-2px);
        }

        .btn-light {
            background: #fff;
            color: #0b1e33;
        }

        .btn-light:hover {
            background: #f1f5f9;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
        }

        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 5px 14px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 600;
            background: #e0f2fe;
            color: #0369a1;
            border: 1px solid #bae6fd;
            letter-spacing: 0.02em;
        }

        .badge-gold {
            background: #fef3c7;
            color: #b45309;
            border-color: #fde68a;
        }

        .section {
            padding: 90px 0;
        }

        .section-header {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 56px;
        }

        .section-header .section-kicker {
            font-size: 14px;
            font-weight: 600;
            color: #0ea5e9;
            text-transform: uppercase;
            letter-spacing: 0.08em;
            margin-bottom: 12px;
            display: block;
        }

        .section-header h2 {
            font-size: 38px;
            font-weight: 800;
            color: #0b1e33;
            line-height: 1.2;
            margin: 0 0 16px;
            letter-spacing: -0.02em;
        }

        .section-header p {
            font-size: 17px;
            color: #64748b;
            margin: 0;
        }

        .card {
            background: #fff;
            border-radius: var(--radius);
            border: 1px solid #e2e8f0;
            box-shadow: var(--shadow-sm);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }

        .card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
        }

        .line-clamp-2 {
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .line-clamp-3 {
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(11, 30, 51, 0.92);
            backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            padding: 0;
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }

        .site-logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.01em;
        }

        .site-logo i {
            color: #0ea5e9;
            font-size: 24px;
        }

        .site-logo:hover {
            opacity: 0.9;
        }

        .site-nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .site-nav a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: 8px;
            font-size: 15px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.75);
            transition: all 0.2s ease;
        }

        .site-nav a:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.08);
        }

        .site-nav a.active {
            color: #fff;
            background: rgba(14, 165, 233, 0.2);
            box-shadow: inset 0 0 0 1px rgba(14, 165, 233, 0.3);
        }

        .header-cta {
            display: flex;
            align-items: center;
            gap: 14px;
        }

        .mobile-menu-btn {
            display: none;
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 8px;
            color: #fff;
            width: 42px;
            height: 42px;
            font-size: 18px;
            cursor: pointer;
            transition: background 0.2s;
            align-items: center;
            justify-content: center;
        }

        .mobile-menu-btn:hover {
            background: rgba(255, 255, 255, 0.1);
        }

        .mobile-menu {
            display: none;
            position: fixed;
            top: 72px;
            left: 0;
            right: 0;
            z-index: 99;
            background: #0b1e33;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            padding: 16px 24px 24px;
            box-shadow: 0 24px 48px rgba(0, 0, 0, 0.2);
        }

        .mobile-menu a {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 14px 16px;
            border-radius: 10px;
            color: rgba(255, 255, 255, 0.85);
            font-size: 16px;
            font-weight: 500;
            margin-bottom: 8px;
        }

        .mobile-menu a:hover {
            background: rgba(255, 255, 255, 0.08);
        }

        .mobile-menu a.active {
            background: rgba(14, 165, 233, 0.2);
            color: #fff;
        }

        .hero {
            position: relative;
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            padding: 140px 0 120px;
            overflow: hidden;
        }

        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(11, 30, 51, 0.95) 0%, rgba(11, 30, 51, 0.78) 50%, rgba(14, 165, 233, 0.35) 100%);
        }

        .hero-content {
            position: relative;
            z-index: 2;
        }

        .hero h1 {
            font-size: 56px;
            font-weight: 800;
            line-height: 1.1;
            color: #fff;
            letter-spacing: -0.02em;
            margin: 20px 0 20px;
            max-width: 700px;
        }

        .hero p.lead {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.85);
            max-width: 560px;
            line-height: 1.7;
            margin: 0 0 36px;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            margin-bottom: 60px;
        }

        .hero-stats {
            display: grid;
            grid-template-columns: repeat(3, minmax(0, 1fr));
            gap: 20px;
            max-width: 720px;
        }

        .hero-stat {
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.14);
            border-radius: 14px;
            padding: 20px;
            backdrop-filter: blur(8px);
        }

        .hero-stat .num {
            font-size: 30px;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
        }

        .hero-stat .label {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 4px;
        }

        .about-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }

        .about-image {
            position: relative;
            border-radius: 20px;
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }

        .about-image img {
            width: 100%;
            height: 420px;
            object-fit: cover;
        }

        .about-image::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(0deg, rgba(11, 30, 51, 0.3) 0%, transparent 60%);
        }

        .about-cards {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin-top: 36px;
        }

        .about-card {
            background: #fff;
            border: 1px solid #e2e8f0;
            border-radius: 14px;
            padding: 24px;
            box-shadow: var(--shadow-sm);
            transition: all 0.25s;
        }

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

        .about-card i {
            font-size: 24px;
            color: #0ea5e9;
            margin-bottom: 12px;
        }

        .about-card h4 {
            font-size: 16px;
            font-weight: 700;
            color: #0b1e33;
            margin: 0 0 6px;
        }

        .about-card p {
            font-size: 14px;
            color: #64748b;
            margin: 0;
            line-height: 1.6;
        }

        .category-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .category-card {
            background: #fff;
            border: 1px solid #e2e8f0;
            border-radius: 18px;
            padding: 36px 28px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }

        .category-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, #0ea5e9, #0b84c1);
            opacity: 0;
            transition: opacity 0.3s;
        }

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

        .category-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }

        .category-icon {
            width: 72px;
            height: 72px;
            border-radius: 20px;
            background: #eff6ff;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            font-size: 30px;
            color: #0ea5e9;
        }

        .category-card h3 {
            font-size: 20px;
            font-weight: 700;
            color: #0b1e33;
            margin: 0 0 12px;
        }

        .category-card p {
            font-size: 14px;
            color: #64748b;
            line-height: 1.6;
            margin: 0 0 24px;
        }

        .category-card .arrow {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: #0ea5e9;
            transition: gap 0.2s;
        }

        .category-card:hover .arrow {
            gap: 10px;
        }

        .news-section {
            background: #fff;
            border-top: 1px solid #e2e8f0;
            border-bottom: 1px solid #e2e8f0;
        }

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

        .news-card {
            background: #fff;
            border: 1px solid #e2e8f0;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all 0.3s ease;
            display: block;
        }

        .news-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-6px);
            border-color: transparent;
        }

        .news-card .cover {
            height: 200px;
            overflow: hidden;
            position: relative;
        }

        .news-card .cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

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

        .news-card .body {
            padding: 24px;
        }

        .news-card h3 {
            font-size: 17px;
            font-weight: 700;
            color: #0b1e33;
            margin: 14px 0 10px;
            line-height: 1.4;
            transition: color 0.2s;
        }

        .news-card:hover h3 {
            color: #0ea5e9;
        }

        .news-card p {
            font-size: 14px;
            color: #64748b;
            line-height: 1.6;
            margin: 0 0 16px;
        }

        .news-card .meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 13px;
            color: #94a3b8;
        }

        .process-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
            position: relative;
        }

        .process-step {
            text-align: center;
            padding: 40px 24px;
            background: #fff;
            border: 1px solid #e2e8f0;
            border-radius: 18px;
            box-shadow: var(--shadow-sm);
            position: relative;
            transition: all 0.3s;
        }

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

        .process-step .step-num {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: #0ea5e9;
            color: #fff;
            font-size: 20px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            box-shadow: 0 4px 12px rgba(14, 165, 233, 0.3);
        }

        .process-step h4 {
            font-size: 18px;
            font-weight: 700;
            color: #0b1e33;
            margin: 0 0 10px;
        }

        .process-step p {
            font-size: 14px;
            color: #64748b;
            line-height: 1.6;
            margin: 0;
        }

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

        .faq-item {
            background: #fff;
            border: 1px solid #e2e8f0;
            border-radius: 14px;
            box-shadow: var(--shadow-sm);
            padding: 0;
            overflow: hidden;
            transition: box-shadow 0.2s;
        }

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

        .faq-item details summary {
            list-style: none;
            padding: 24px 56px 24px 24px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: #0b1e33;
            position: relative;
            user-select: none;
        }

        .faq-item details summary::-webkit-details-marker {
            display: none;
        }

        .faq-item details summary::after {
            content: '+';
            position: absolute;
            right: 22px;
            top: 50%;
            transform: translateY(-50%);
            font-size: 26px;
            color: #0ea5e9;
            font-weight: 300;
            transition: transform 0.3s;
        }

        .faq-item details[open] summary::after {
            transform: translateY(-50%) rotate(45deg);
        }

        .faq-item .answer {
            padding: 0 24px 24px;
            font-size: 14px;
            color: #64748b;
            line-height: 1.7;
        }

        .cta-section {
            position: relative;
            background: #0b1e33;
            padding: 100px 0;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -100px;
            right: -100px;
            width: 400px;
            height: 400px;
            background: rgba(14, 165, 233, 0.2);
            border-radius: 50%;
            filter: blur(80px);
        }

        .cta-section .cta-content {
            position: relative;
            text-align: center;
            z-index: 2;
        }

        .cta-section h2 {
            font-size: 38px;
            font-weight: 800;
            color: #fff;
            margin: 0 0 16px;
        }

        .cta-section p {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.75);
            max-width: 500px;
            margin: 0 auto 40px;
        }

        .site-footer {
            background: #081426;
            padding: 60px 0 0;
            color: rgba(255, 255, 255, 0.6);
        }

        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 40px;
        }

        .site-footer h5 {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin: 0 0 16px;
            letter-spacing: 0.04em;
        }

        .site-footer p {
            font-size: 14px;
            line-height: 1.7;
            margin: 0;
        }

        .site-footer .footer-brand {
            font-size: 22px;
            font-weight: 800;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }

        .site-footer .footer-brand i {
            color: #0ea5e9;
            font-size: 26px;
        }

        .site-footer .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .site-footer .footer-links li {
            margin-bottom: 10px;
        }

        .site-footer .footer-links a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            transition: color 0.2s;
        }

        .site-footer .footer-links a:hover {
            color: #0ea5e9;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 24px 0;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
            text-align: center;
        }

        .footer-bottom span {
            color: rgba(255, 255, 255, 0.6);
        }

        .back-to-top {
            position: fixed;
            bottom: 32px;
            right: 32px;
            width: 46px;
            height: 46px;
            border-radius: 50%;
            background: #0ea5e9;
            color: #fff;
            border: none;
            font-size: 18px;
            cursor: pointer;
            display: none;
            align-items: center;
            justify-content: center;
            box-shadow: 0 8px 24px rgba(14, 165, 233, 0.35);
            transition: all 0.3s;
            z-index: 50;
        }

        .back-to-top:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 32px rgba(14, 165, 233, 0.45);
        }

        @media (max-width: 1024px) {
            .hero h1 {
                font-size: 44px;
            }

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

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

            .about-grid {
                gap: 40px;
            }

            .process-grid {
                gap: 20px;
            }
        }

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

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

            .mobile-menu.menu-open {
                display: block;
            }

            .section {
                padding: 60px 0;
            }

            .section-header h2 {
                font-size: 30px;
            }

            .hero {
                padding: 100px 0 80px;
            }

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

            .hero p.lead {
                font-size: 16px;
            }

            .hero-stats {
                grid-template-columns: 1fr;
                gap: 12px;
                max-width: 100%;
            }

            .hero-stat {
                padding: 16px;
            }

            .hero-stat .num {
                font-size: 24px;
            }

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

            .about-image img {
                height: 280px;
            }

            .about-cards {
                grid-template-columns: 1fr;
            }

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

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

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

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

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

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }

            .hero-actions {
                flex-direction: column;
            }

            .hero-actions .btn {
                width: 100%;
            }

            .btn {
                padding: 12px 20px;
                font-size: 14px;
            }

            .header-cta .btn {
                display: none;
            }

            .section-header h2 {
                font-size: 26px;
            }

            .faq-item details summary {
                padding: 20px 48px 20px 20px;
                font-size: 15px;
            }

            .cta-section .btn {
                width: 100%;
            }

            .back-to-top {
                bottom: 20px;
                right: 20px;
                width: 40px;
                height: 40px;
                font-size: 16px;
            }
        }

/* roulang page: article */
:root {
            --primary: #0f766e;
            --primary-dark: #134e4a;
            --primary-light: #ccfbf1;
            --accent: #0ea5e9;
            --ink: #1e293b;
            --soft: #64748b;
            --line: #e2e8f0;
            --bg: #f8fafc;
            --white: #ffffff;
            --radius-sm: 10px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --shadow-sm: 0 2px 8px rgba(15, 118, 110, .06);
            --shadow-md: 0 8px 30px rgba(15, 118, 110, .10);
            --shadow-lg: 0 16px 40px rgba(15, 118, 110, .14);
            --transition: all .28s cubic-bezier(.4, 0, .2, 1);
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            background: var(--bg);
            color: var(--ink);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }
        .container {
            width: 100%;
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 24px;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container-xl {
            max-width: 860px;
        }

        /* ===== 顶部导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, .92);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid rgba(226, 232, 240, .85);
            box-shadow: 0 2px 12px rgba(15, 23, 42, .04);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }
        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 1.35rem;
            color: var(--primary-dark);
            letter-spacing: -.5px;
            white-space: nowrap;
        }
        .site-logo i {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            border-radius: 12px;
            background: linear-gradient(135deg, #0f766e, #14b8a6);
            color: #fff;
            font-size: 1.1rem;
            box-shadow: 0 6px 18px rgba(15, 118, 110, .28);
        }
        .site-nav {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .site-nav a {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 20px;
            border-radius: 999px;
            font-size: .92rem;
            font-weight: 600;
            color: var(--soft);
            border: 1px solid transparent;
            transition: var(--transition);
            white-space: nowrap;
        }
        .site-nav a i {
            font-size: .85rem;
        }
        .site-nav a:hover {
            color: var(--primary);
            background: rgba(15, 118, 110, .06);
        }
        .site-nav a.active {
            color: var(--primary-dark);
            background: var(--primary-light);
            border-color: rgba(15, 118, 110, .18);
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--primary-dark);
            cursor: pointer;
            width: 44px;
            height: 44px;
            border-radius: 10px;
            transition: var(--transition);
        }
        .nav-toggle:hover {
            background: rgba(15, 118, 110, .06);
        }
        @media (max-width: 768px) {
            .site-nav {
                position: absolute;
                top: 72px;
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                align-items: stretch;
                padding: 16px 24px;
                gap: 6px;
                border-bottom: 1px solid var(--line);
                box-shadow: 0 16px 32px rgba(15, 23, 42, .08);
                display: none;
            }
            .site-nav.open {
                display: flex;
            }
            .site-nav a {
                padding: 14px 16px;
                border-radius: 10px;
            }
            .nav-toggle {
                display: inline-flex;
                align-items: center;
                justify-content: center;
            }
        }

        /* ===== 文章页 Banner ===== */
        .article-banner {
            position: relative;
            background: linear-gradient(120deg, rgba(15, 118, 110, .94), rgba(14, 165, 233, .82)), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            padding: 80px 0 96px;
            color: #fff;
            overflow: hidden;
        }
        .article-banner::after {
            content: '';
            position: absolute;
            bottom: -60px;
            right: -30px;
            width: 260px;
            height: 260px;
            background: rgba(255, 255, 255, .06);
            border-radius: 50%;
        }
        .article-banner .container {
            position: relative;
            z-index: 2;
        }
        .article-banner .breadcrumb {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: .9rem;
            margin-bottom: 28px;
            opacity: .82;
            flex-wrap: wrap;
        }
        .article-banner .breadcrumb a:hover {
            opacity: 1;
            text-decoration: underline;
        }
        .article-banner h1 {
            font-size: clamp(1.75rem, 4vw, 2.75rem);
            font-weight: 800;
            line-height: 1.35;
            max-width: 820px;
            letter-spacing: -.5px;
            margin-bottom: 20px;
            text-shadow: 0 4px 16px rgba(0, 0, 0, .18);
        }
        .article-meta {
            display: flex;
            align-items: center;
            gap: 20px;
            flex-wrap: wrap;
            font-size: .92rem;
            opacity: .92;
        }
        .article-meta .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, .18);
            border: 1px solid rgba(255, 255, 255, .22);
            padding: 6px 16px;
            border-radius: 999px;
            font-weight: 600;
            backdrop-filter: blur(4px);
        }

        /* ===== 文章主体 ===== */
        .article-main {
            padding: 64px 0 80px;
        }
        .article-layout {
            display: grid;
            grid-template-columns: 1fr;
            gap: 40px;
            max-width: 860px;
            margin: 0 auto;
        }
        .article-card {
            background: var(--white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--line);
            overflow: hidden;
        }
        .article-body {
            padding: 48px 52px;
            font-size: 1.06rem;
            line-height: 1.9;
            color: #334155;
        }
        .article-body h2 {
            font-size: 1.55rem;
            color: var(--primary-dark);
            font-weight: 800;
            margin: 2em 0 .7em;
            padding-left: 16px;
            border-left: 4px solid var(--primary);
            border-radius: 4px;
            line-height: 1.4;
        }
        .article-body h3 {
            font-size: 1.3rem;
            color: var(--ink);
            font-weight: 700;
            margin: 1.8em 0 .6em;
        }
        .article-body p {
            margin-bottom: 1.2em;
        }
        .article-body ul,
        .article-body ol {
            margin: 1em 0 1.4em 1.4em;
        }
        .article-body ul li,
        .article-body ol li {
            margin-bottom: .55em;
            position: relative;
        }
        .article-body ul li::marker {
            color: var(--primary);
        }
        .article-body img {
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            margin: 1.6em 0;
        }
        .article-body blockquote {
            margin: 1.6em 0;
            padding: 18px 24px;
            background: rgba(15, 118, 110, .05);
            border-left: 4px solid var(--primary);
            border-radius: 0 12px 12px 0;
            color: #475569;
            font-style: normal;
            line-height: 1.7;
        }
        .article-body table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.6em 0;
            font-size: .96rem;
        }
        .article-body table th {
            background: rgba(15, 118, 110, .06);
            color: var(--primary-dark);
            font-weight: 700;
            text-align: left;
            padding: 12px 16px;
            border: 1px solid var(--line);
        }
        .article-body table td {
            padding: 11px 16px;
            border: 1px solid var(--line);
        }
        .article-body table tr:nth-child(even) td {
            background: #f8fafc;
        }
        .article-body a {
            color: var(--primary);
            font-weight: 600;
            text-decoration: underline;
            text-underline-offset: 3px;
            text-decoration-color: rgba(15, 118, 110, .3);
        }
        .article-body a:hover {
            color: var(--primary-dark);
            text-decoration-color: var(--primary-dark);
        }
        .article-footer {
            border-top: 1px solid var(--line);
            margin-top: 32px;
            padding: 32px 52px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 24px;
            flex-wrap: wrap;
            background: #fbfdfc;
        }
        .article-footer .back-home {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: 999px;
            background: var(--primary-light);
            color: var(--primary-dark);
            font-weight: 700;
            font-size: .92rem;
            border: 1px solid rgba(15, 118, 110, .18);
            transition: var(--transition);
        }
        .article-footer .back-home:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            box-shadow: 0 8px 20px rgba(15, 118, 110, .22);
            transform: translateY(-2px);
        }
        .article-footer .share-tag {
            font-size: .88rem;
            color: var(--soft);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        /* ===== 信息卡片 ===== */
        .info-cards {
            padding: 0 0 72px;
        }
        .info-cards .container {
            max-width: 1240px;
        }
        .info-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .info-card {
            background: var(--white);
            border-radius: var(--radius-md);
            padding: 24px;
            border: 1px solid var(--line);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }
        .info-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: rgba(15, 118, 110, .25);
        }
        .info-card i {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 46px;
            height: 46px;
            border-radius: 12px;
            font-size: 1.15rem;
            margin-bottom: 16px;
            color: var(--primary-dark);
            background: var(--primary-light);
        }
        .info-card h4 {
            font-size: 1.06rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--ink);
        }
        .info-card p {
            font-size: .9rem;
            color: var(--soft);
            line-height: 1.65;
            margin: 0;
        }
        @media (max-width: 1024px) {
            .info-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .info-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ===== 推荐阅读 ===== */
        .related-section {
            padding: 72px 0;
            background: var(--white);
            border-top: 1px solid var(--line);
            border-bottom: 1px solid var(--line);
        }
        .section-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 40px;
            gap: 16px;
            flex-wrap: wrap;
        }
        .section-header h2 {
            font-size: 1.7rem;
            font-weight: 800;
            color: var(--ink);
            letter-spacing: -.5px;
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .section-header h2 i {
            color: var(--primary);
            font-size: 1.4rem;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .related-card {
            background: var(--bg);
            border: 1px solid var(--line);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .related-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-md);
            border-color: rgba(15, 118, 110, .26);
        }
        .related-card img {
            height: 170px;
            object-fit: cover;
            width: 100%;
        }
        .related-card .content {
            padding: 22px 24px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .related-card .cat-tag {
            font-size: .8rem;
            font-weight: 700;
            color: var(--primary);
            background: var(--primary-light);
            display: inline-block;
            padding: 4px 14px;
            border-radius: 999px;
            align-self: flex-start;
            margin-bottom: 12px;
        }
        .related-card h3 {
            font-size: 1.08rem;
            font-weight: 700;
            line-height: 1.5;
            margin-bottom: 10px;
            color: var(--ink);
        }
        .related-card h3 a:hover {
            color: var(--primary);
        }
        .related-card p {
            font-size: .88rem;
            color: var(--soft);
            line-height: 1.65;
            margin: 0;
            flex: 1;
        }
        @media (max-width: 1024px) {
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 640px) {
            .related-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ===== FAQ ===== */
        .faq-section {
            padding: 72px 0;
            background: var(--bg);
        }
        .faq-list {
            max-width: 860px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .faq-item {
            background: var(--white);
            border: 1px solid var(--line);
            border-radius: var(--radius-md);
            padding: 24px 28px;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(15, 118, 110, .22);
            box-shadow: var(--shadow-sm);
        }
        .faq-item h4 {
            font-size: 1.02rem;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .faq-item h4 i {
            color: var(--primary);
            font-size: .9rem;
        }
        .faq-item p {
            font-size: .93rem;
            color: var(--soft);
            line-height: 1.7;
            margin: 0;
            padding-left: 28px;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 72px 0;
            background: linear-gradient(120deg, var(--primary-dark), #0d9488);
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -80px;
            right: -40px;
            width: 300px;
            height: 300px;
            border: 1px solid rgba(255, 255, 255, .1);
            border-radius: 50%;
        }
        .cta-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 40px;
            flex-wrap: wrap;
        }
        .cta-inner h2 {
            font-size: 1.8rem;
            font-weight: 800;
            margin-bottom: 12px;
        }
        .cta-inner p {
            font-size: 1rem;
            opacity: .85;
            max-width: 480px;
        }
        .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: #fff;
            color: var(--primary-dark);
            font-weight: 800;
            font-size: 1rem;
            padding: 16px 32px;
            border-radius: 999px;
            box-shadow: 0 8px 28px rgba(0, 0, 0, .16);
            transition: var(--transition);
            border: none;
            cursor: pointer;
        }
        .cta-btn:hover {
            transform: translateY(-3px) scale(1.01);
            box-shadow: 0 16px 36px rgba(0, 0, 0, .22);
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #0f172a;
            color: #94a3b8;
            padding: 72px 0 0;
        }
        .site-footer .container {
            max-width: 1240px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 48px;
            border-bottom: 1px solid rgba(255, 255, 255, .08);
        }
        .footer-brand {
            display: flex;
            align-items: center;
            gap: 12px;
            font-weight: 800;
            font-size: 1.35rem;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: -.5px;
        }
        .footer-brand i {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: linear-gradient(135deg, #0f766e, #14b8a6);
            color: #fff;
            font-size: 1rem;
        }
        .site-footer p {
            font-size: .92rem;
            line-height: 1.7;
            margin-bottom: 0;
        }
        .site-footer h5 {
            color: #fff;
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 20px;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-links a {
            font-size: .9rem;
            color: #94a3b8;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .footer-links a:hover {
            color: #5eead4;
            padding-left: 4px;
        }
        .footer-bottom {
            text-align: center;
            padding: 28px 0;
            font-size: .88rem;
            color: #64748b;
            border-top: 1px solid rgba(255, 255, 255, .05);
        }
        .footer-bottom span {
            color: #94a3b8;
            font-weight: 600;
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
        }

        /* ===== 内容未找到 ===== */
        .not-found-box {
            text-align: center;
            padding: 80px 24px;
        }
        .not-found-box i {
            font-size: 4rem;
            color: var(--primary);
            margin-bottom: 24px;
            display: inline-block;
        }
        .not-found-box h2 {
            font-size: 1.8rem;
            font-weight: 800;
            margin-bottom: 16px;
        }
        .not-found-box p {
            color: var(--soft);
            font-size: 1.05rem;
            margin-bottom: 32px;
        }
        .not-found-box a {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 32px;
            border-radius: 999px;
            background: var(--primary);
            color: #fff;
            font-weight: 700;
            transition: var(--transition);
        }
        .not-found-box a:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 10px 24px rgba(15, 118, 110, .25);
        }

        /* ===== 文章页额外响应式 ===== */
        @media (max-width: 768px) {
            .article-banner {
                padding: 56px 0 72px;
            }
            .article-body {
                padding: 28px 24px;
            }
            .article-footer {
                padding: 24px 24px;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .article-banner h1 {
                font-size: 1.5rem;
            }
            .article-meta {
                gap: 12px;
            }
            .article-card {
                border-radius: 14px;
            }
            .article-body {
                padding: 22px 18px;
                font-size: 1rem;
            }
            .article-body h2 {
                font-size: 1.3rem;
            }
            .info-card {
                padding: 20px;
            }
            .cta-btn {
                width: 100%;
                justify-content: center;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #0f766e;
            --primary-light: #14b8a6;
            --primary-dark: #115e59;
            --accent: #0ea5e9;
            --bg: #f1f5f9;
            --surface: #ffffff;
            --text: #0f172a;
            --text-weak: #64748b;
            --border: #e2e8f0;
            --radius: 16px;
            --radius-sm: 10px;
            --shadow: 0 10px 30px rgba(2, 6, 23, 0.08);
            --shadow-lg: 0 20px 50px rgba(2, 6, 23, 0.14);
            --space: 96px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            text-decoration: none;
            color: inherit;
        }

        button,
        input {
            font-family: inherit;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }

        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 20px;
            color: var(--primary-dark);
            white-space: nowrap;
        }

        .site-logo i {
            color: var(--primary);
            font-size: 22px;
        }

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

        .site-nav a {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 18px;
            border-radius: 999px;
            font-weight: 600;
            font-size: 15px;
            color: var(--text-weak);
            transition: all 0.25s ease;
        }

        .site-nav a:hover {
            background: #f0fdfa;
            color: var(--primary-dark);
        }

        .site-nav a.active {
            background: var(--primary);
            color: #ffffff;
            box-shadow: 0 4px 14px rgba(15, 118, 110, 0.35);
        }

        .nav-toggle {
            display: none;
            background: none;
            border: 0;
            font-size: 22px;
            color: var(--text);
            cursor: pointer;
            padding: 8px;
        }

        /* Hero */
        .page-hero {
            position: relative;
            background: linear-gradient(135deg, rgba(15, 118, 110, 0.95), rgba(14, 116, 144, 0.88)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            padding: 110px 0 150px;
            color: #ffffff;
        }

        .hero-content {
            position: relative;
            z-index: 1;
            max-width: 780px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.18);
            border: 1px solid rgba(255, 255, 255, 0.3);
            padding: 6px 16px;
            border-radius: 999px;
            font-size: 14px;
            backdrop-filter: blur(6px);
            margin-bottom: 22px;
        }

        .page-hero h1 {
            font-size: 48px;
            line-height: 1.2;
            font-weight: 800;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }

        .page-hero p {
            font-size: 18px;
            opacity: 0.95;
            max-width: 640px;
            margin-bottom: 32px;
        }

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

        .hero-stats {
            display: flex;
            gap: 32px;
            margin-top: 40px;
            flex-wrap: wrap;
        }

        .hero-stats div {
            padding-right: 32px;
            border-right: 1px solid rgba(255, 255, 255, 0.25);
        }

        .hero-stats div:last-child {
            border-right: 0;
        }

        .hero-stats b {
            display: block;
            font-size: 28px;
            font-weight: 800;
            line-height: 1.2;
        }

        .hero-stats span {
            font-size: 14px;
            opacity: 0.85;
        }

        /* Buttons */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 13px 26px;
            border-radius: 999px;
            font-weight: 700;
            font-size: 15px;
            transition: all 0.25s ease;
            border: 2px solid transparent;
            cursor: pointer;
        }

        .btn-primary {
            background: #ffffff;
            color: var(--primary-dark);
            box-shadow: 0 4px 18px rgba(0, 0, 0, 0.12);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
        }

        .btn-ghost {
            background: transparent;
            color: #ffffff;
            border-color: rgba(255, 255, 255, 0.7);
        }

        .btn-ghost:hover {
            background: rgba(255, 255, 255, 0.14);
            transform: translateY(-2px);
        }

        .btn-accent {
            background: var(--accent);
            color: #ffffff;
            box-shadow: 0 4px 16px rgba(14, 165, 233, 0.35);
        }

        .btn-accent:hover {
            background: #0284c7;
            transform: translateY(-2px);
        }

        /* Sections */
        .section {
            padding: var(--space) 0;
        }

        .section-alt {
            background: var(--surface);
        }

        .section-head {
            text-align: center;
            max-width: 640px;
            margin: 0 auto 52px;
        }

        .section-tag {
            display: inline-block;
            background: #f0fdfa;
            color: var(--primary);
            font-weight: 700;
            font-size: 14px;
            padding: 5px 14px;
            border-radius: 999px;
            margin-bottom: 12px;
        }

        .section-head h2 {
            font-size: 34px;
            font-weight: 800;
            line-height: 1.3;
            letter-spacing: -0.3px;
        }

        .section-head p {
            color: var(--text-weak);
            margin-top: 10px;
            font-size: 16px;
        }

        /* KPI strip */
        .kpi-strip {
            position: relative;
            z-index: 2;
            margin-top: -60px;
            padding: 0 24px;
        }

        .kpi-grid {
            max-width: 1100px;
            margin: 0 auto;
            background: var(--surface);
            border-radius: var(--radius);
            box-shadow: var(--shadow-lg);
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            overflow: hidden;
            border: 1px solid var(--border);
        }

        .kpi-item {
            padding: 30px 24px;
            text-align: center;
            border-right: 1px solid var(--border);
        }

        .kpi-item:last-child {
            border-right: 0;
        }

        .kpi-item strong {
            display: block;
            font-size: 32px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
        }

        .kpi-item span {
            color: var(--text-weak);
            font-size: 14px;
        }

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

        .step-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 30px;
            position: relative;
            transition: all 0.3s ease;
        }

        .step-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow);
            border-color: var(--primary-light);
        }

        .step-num {
            font-size: 40px;
            font-weight: 800;
            color: #ccfbf1;
            line-height: 1;
            margin-bottom: 16px;
        }

        .step-card h3 {
            font-size: 18px;
            margin-bottom: 10px;
        }

        .step-card p {
            color: var(--text-weak);
            font-size: 15px;
        }

        /* Method cards */
        .methods-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .method-card {
            background: var(--surface);
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--border);
            transition: all 0.3s ease;
        }

        .method-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-lg);
        }

        .method-card .cover {
            height: 200px;
            overflow: hidden;
            position: relative;
            background: #e2e8f0;
        }

        .method-card .cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .method-card:hover .cover img {
            transform: scale(1.05);
        }

        .method-body {
            padding: 26px;
        }

        .method-body h3 {
            font-size: 20px;
            margin-bottom: 10px;
        }

        .method-body p {
            color: var(--text-weak);
            font-size: 15px;
        }

        .method-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 16px;
        }

        .tag {
            display: inline-block;
            background: #f0fdfa;
            color: var(--primary-dark);
            font-size: 13px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 999px;
        }

        /* News */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .news-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 28px;
            transition: all 0.3s ease;
            display: flex;
            flex-direction: column;
        }

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

        .news-date {
            font-size: 13px;
            color: var(--primary);
            font-weight: 600;
            margin-bottom: 10px;
        }

        .news-card h3 {
            font-size: 18px;
            line-height: 1.5;
            margin-bottom: 10px;
        }

        .news-card p {
            color: var(--text-weak);
            font-size: 15px;
            flex: 1;
        }

        .news-link {
            margin-top: 16px;
            color: var(--primary);
            font-weight: 600;
            font-size: 14px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap 0.25s ease;
        }

        .news-link:hover {
            color: var(--primary-dark);
            gap: 10px;
        }

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

        .faq-item {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            margin-bottom: 16px;
            overflow: hidden;
            transition: box-shadow 0.3s ease;
        }

        .faq-item summary {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 22px 26px;
            cursor: pointer;
            font-weight: 600;
            font-size: 16px;
            list-style: none;
            transition: background 0.25s ease;
        }

        .faq-item summary::-webkit-details-marker {
            display: none;
        }

        .faq-item summary:hover {
            background: #f8fafc;
        }

        .faq-item summary i {
            color: var(--primary);
            transition: transform 0.3s ease;
            font-size: 14px;
        }

        .faq-item[open] {
            box-shadow: var(--shadow);
            border-color: var(--primary-light);
        }

        .faq-item[open] summary i {
            transform: rotate(180deg);
        }

        .faq-item .faq-body {
            padding: 0 26px 22px;
            color: var(--text-weak);
            line-height: 1.8;
            font-size: 15px;
        }

        /* CTA */
        .cta-section {
            position: relative;
            background: linear-gradient(135deg, rgba(2, 6, 23, 0.88), rgba(15, 118, 110, 0.9)), url('/assets/images/backpic/back-3.png') center/cover no-repeat;
            color: #ffffff;
            padding: 80px 0;
            text-align: center;
        }

        .cta-inner {
            max-width: 680px;
            margin: 0 auto;
        }

        .cta-inner h2 {
            font-size: 32px;
            margin-bottom: 14px;
            line-height: 1.3;
        }

        .cta-inner p {
            opacity: 0.85;
            margin-bottom: 28px;
            font-size: 16px;
        }

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

        /* Footer */
        .site-footer {
            background: #0b1e2d;
            color: #cbd5e1;
            padding: 64px 0 28px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 48px;
            margin-bottom: 40px;
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 20px;
            color: #ffffff;
            margin-bottom: 14px;
        }

        .footer-brand i {
            color: var(--primary-light);
        }

        .footer-grid h5 {
            color: #ffffff;
            font-size: 16px;
            margin-bottom: 16px;
        }

        .footer-links {
            list-style: none;
        }

        .footer-links li {
            margin-bottom: 10px;
        }

        .footer-links a {
            color: #cbd5e1;
            transition: all 0.25s ease;
        }

        .footer-links a:hover {
            color: var(--primary-light);
            padding-left: 4px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 24px;
            text-align: center;
            font-size: 14px;
            color: #94a3b8;
        }

        .footer-bottom span {
            color: #7dd3fc;
        }

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

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

        @media (max-width: 768px) {
            .section {
                padding: 64px 0;
            }

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

            .kpi-item {
                border-right: 0;
                border-bottom: 1px solid var(--border);
            }

            .kpi-item:nth-child(odd) {
                border-right: 1px solid var(--border);
            }

            .kpi-item:nth-child(3),
            .kpi-item:nth-child(4) {
                border-bottom: 0;
            }

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

            .page-hero p {
                font-size: 16px;
            }

            .page-hero {
                padding: 80px 0 130px;
            }

            .nav-toggle {
                display: block;
            }

            .site-nav {
                position: fixed;
                top: 72px;
                left: 0;
                right: 0;
                background: var(--surface);
                flex-direction: column;
                align-items: stretch;
                padding: 16px;
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow);
                display: none;
            }

            .site-nav.open {
                display: flex;
            }

            .site-nav a {
                justify-content: center;
                padding: 14px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }

            .methods-grid,
            .news-grid {
                grid-template-columns: 1fr;
            }

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

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }

            .hero-stats {
                gap: 16px;
            }

            .hero-stats div {
                padding-right: 16px;
            }

            .hero-stats b {
                font-size: 22px;
            }

            .hero-stats span {
                font-size: 13px;
            }

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

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