/* roulang page: index */
:root {
            --primary: #1a3a5c;
            --primary-light: #2a5a8c;
            --primary-dark: #0f2440;
            --accent: #e8a83e;
            --accent-light: #f0c06a;
            --accent-dark: #c88a1e;
            --bg-light: #f8f9fb;
            --bg-white: #ffffff;
            --bg-dark: #0f1a2e;
            --text-primary: #1a2a3a;
            --text-secondary: #5a6a7a;
            --text-light: #8a9aaa;
            --text-white: #ffffff;
            --border-color: #e2e6ee;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow-md: 0 6px 24px rgba(0,0,0,0.10);
            --shadow-lg: 0 16px 48px rgba(0,0,0,0.14);
            --spacing-xs: 0.5rem;
            --spacing-sm: 1rem;
            --spacing-md: 2rem;
            --spacing-lg: 4rem;
            --spacing-xl: 6rem;
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html { scroll-behavior: smooth; font-size: 16px; }

        body {
            font-family: var(--font-sans);
            color: var(--text-primary);
            background: var(--bg-light);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }

        a { color: var(--primary-light); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--accent); }
        a:focus { outline: 2px solid var(--accent); outline-offset: 2px; }

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

        h1, h2, h3, h4, h5, h6 { font-weight: 700; line-height: 1.3; color: var(--text-primary); }
        h1 { font-size: 2.8rem; letter-spacing: -0.02em; }
        h2 { font-size: 2.2rem; letter-spacing: -0.01em; }
        h3 { font-size: 1.5rem; }
        h4 { font-size: 1.2rem; }

        .container { max-width: 1200px; margin: 0 auto; padding: 0 var(--spacing-sm); }

        /* ===== Header & Nav ===== */
        .site-header {
            background: var(--bg-white);
            box-shadow: 0 2px 16px rgba(0,0,0,0.06);
            position: sticky;
            top: 0;
            z-index: 100;
            border-bottom: 1px solid var(--border-color);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0.6rem 0;
            gap: var(--spacing-sm);
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--primary);
            white-space: nowrap;
        }
        .logo i { color: var(--accent); font-size: 1.6rem; }
        .logo span { background: linear-gradient(135deg, var(--primary), var(--primary-light)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }

        .nav-search-wrap {
            flex: 1;
            max-width: 480px;
            position: relative;
            margin: 0 var(--spacing-sm);
        }
        .nav-search-wrap input {
            width: 100%;
            padding: 0.6rem 1.2rem 0.6rem 2.6rem;
            border: 2px solid var(--border-color);
            border-radius: 40px;
            font-size: 0.9rem;
            background: var(--bg-light);
            transition: var(--transition);
            outline: none;
        }
        .nav-search-wrap input:focus {
            border-color: var(--accent);
            background: var(--bg-white);
            box-shadow: 0 0 0 4px rgba(232,168,62,0.15);
        }
        .nav-search-wrap i {
            position: absolute;
            left: 1rem;
            top: 50%;
            transform: translateY(-50%);
            color: var(--text-light);
            font-size: 1rem;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 0.2rem;
            list-style: none;
            margin: 0;
        }
        .nav-links li a {
            display: block;
            padding: 0.5rem 1rem;
            border-radius: 30px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: var(--transition);
        }
        .nav-links li a:hover,
        .nav-links li a.active {
            background: var(--primary);
            color: var(--text-white);
        }
        .nav-links li a i { margin-right: 0.3rem; font-size: 0.85rem; }

        .nav-cta {
            background: var(--accent) !important;
            color: var(--primary-dark) !important;
            font-weight: 700 !important;
            padding: 0.5rem 1.4rem !important;
        }
        .nav-cta:hover {
            background: var(--accent-light) !important;
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(232,168,62,0.4);
        }

        .mobile-toggle { display: none; background: none; border: none; font-size: 1.6rem; color: var(--primary); cursor: pointer; padding: 0.2rem; }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 75vh;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 60%, var(--primary-light) 100%);
            overflow: hidden;
            padding: var(--spacing-xl) var(--spacing-sm);
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.18;
            pointer-events: none;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(26,58,92,0.4) 0%, transparent 70%);
            pointer-events: none;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 820px;
        }
        .hero-content h1 {
            color: var(--text-white);
            font-size: 3.2rem;
            margin-bottom: 1rem;
            text-shadow: 0 2px 20px rgba(0,0,0,0.3);
        }
        .hero-content h1 i { color: var(--accent); margin-right: 0.3rem; }
        .hero-content p {
            color: rgba(255,255,255,0.85);
            font-size: 1.15rem;
            max-width: 600px;
            margin: 0 auto var(--spacing-md);
            line-height: 1.8;
        }
        .hero-badge {
            display: inline-block;
            background: rgba(232,168,62,0.2);
            color: var(--accent-light);
            padding: 0.3rem 1.2rem;
            border-radius: 40px;
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.05em;
            margin-bottom: 1.2rem;
            border: 1px solid rgba(232,168,62,0.25);
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: var(--spacing-sm);
            justify-content: center;
            margin-top: var(--spacing-md);
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.8rem 2rem;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            text-decoration: none;
        }
        .btn-primary {
            background: var(--accent);
            color: var(--primary-dark);
        }
        .btn-primary:hover {
            background: var(--accent-light);
            transform: translateY(-3px);
            box-shadow: 0 8px 28px rgba(232,168,62,0.4);
            color: var(--primary-dark);
        }
        .btn-secondary {
            background: rgba(255,255,255,0.12);
            color: var(--text-white);
            border: 2px solid rgba(255,255,255,0.25);
            backdrop-filter: blur(4px);
        }
        .btn-secondary:hover {
            background: rgba(255,255,255,0.22);
            transform: translateY(-3px);
            color: var(--text-white);
        }
        .btn-lg { padding: 1rem 2.6rem; font-size: 1.1rem; }
        .btn i { font-size: 1.1rem; }

        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: var(--spacing-md);
            justify-content: center;
            margin-top: var(--spacing-lg);
        }
        .hero-stat {
            text-align: center;
            color: rgba(255,255,255,0.9);
        }
        .hero-stat .num {
            display: block;
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--accent);
        }
        .hero-stat .label {
            font-size: 0.85rem;
            opacity: 0.75;
        }

        /* ===== Sections ===== */
        .section {
            padding: var(--spacing-xl) 0;
        }
        .section-alt { background: var(--bg-white); }
        .section-title {
            text-align: center;
            margin-bottom: var(--spacing-lg);
        }
        .section-title h2 {
            margin-bottom: 0.5rem;
            position: relative;
            display: inline-block;
        }
        .section-title h2::after {
            content: '';
            display: block;
            width: 60px;
            height: 4px;
            background: var(--accent);
            border-radius: 4px;
            margin: 0.6rem auto 0;
        }
        .section-title p {
            color: var(--text-secondary);
            max-width: 560px;
            margin: 0.8rem auto 0;
            font-size: 1.05rem;
        }

        /* ===== Feature Cards ===== */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: var(--spacing-md);
        }
        .feature-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: var(--spacing-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
            text-align: center;
        }
        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: var(--accent);
        }
        .feature-card .icon {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: var(--text-white);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            margin: 0 auto var(--spacing-sm);
        }
        .feature-card h3 { font-size: 1.2rem; margin-bottom: 0.5rem; }
        .feature-card p { color: var(--text-secondary); font-size: 0.95rem; line-height: 1.6; }
        .feature-card .badge {
            display: inline-block;
            background: rgba(232,168,62,0.12);
            color: var(--accent-dark);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 0.2rem 0.8rem;
            border-radius: 20px;
            margin-top: 0.6rem;
        }

        /* ===== Cover Cards ===== */
        .cover-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: var(--spacing-md);
        }
        .cover-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .cover-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
        }
        .cover-card .img-wrap {
            height: 200px;
            overflow: hidden;
            position: relative;
        }
        .cover-card .img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .cover-card:hover .img-wrap img { transform: scale(1.06); }
        .cover-card .img-wrap .tag {
            position: absolute;
            top: var(--spacing-xs);
            left: var(--spacing-xs);
            background: var(--accent);
            color: var(--primary-dark);
            font-size: 0.75rem;
            font-weight: 700;
            padding: 0.2rem 0.8rem;
            border-radius: 20px;
        }
        .cover-card .body {
            padding: var(--spacing-sm) var(--spacing-md) var(--spacing-md);
        }
        .cover-card .body h3 { font-size: 1.15rem; margin-bottom: 0.4rem; }
        .cover-card .body p { color: var(--text-secondary); font-size: 0.9rem; line-height: 1.6; margin-bottom: 0.6rem; }
        .cover-card .meta {
            display: flex;
            align-items: center;
            gap: 1rem;
            font-size: 0.8rem;
            color: var(--text-light);
        }
        .cover-card .meta i { margin-right: 0.25rem; }

        /* ===== Category Intro ===== */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: var(--spacing-sm);
        }
        .category-item {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: var(--spacing-md) var(--spacing-sm);
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
            cursor: pointer;
        }
        .category-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: var(--accent);
        }
        .category-item i {
            font-size: 2rem;
            color: var(--primary-light);
            margin-bottom: 0.5rem;
            display: block;
        }
        .category-item h4 { font-size: 1rem; margin-bottom: 0.2rem; }
        .category-item p { font-size: 0.8rem; color: var(--text-light); }

        /* ===== Process / Steps ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: var(--spacing-md);
            counter-reset: step;
        }
        .step-item {
            text-align: center;
            position: relative;
            padding: var(--spacing-md) var(--spacing-sm);
        }
        .step-item::before {
            counter-increment: step;
            content: counter(step);
            display: block;
            width: 48px;
            height: 48px;
            line-height: 48px;
            border-radius: 50%;
            background: var(--primary);
            color: var(--text-white);
            font-size: 1.2rem;
            font-weight: 800;
            margin: 0 auto var(--spacing-sm);
        }
        .step-item h4 { font-size: 1.05rem; margin-bottom: 0.3rem; }
        .step-item p { color: var(--text-secondary); font-size: 0.9rem; line-height: 1.6; }
        .step-connector { display: none; }

        /* ===== Data / Stats ===== */
        .data-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: var(--spacing-md);
            text-align: center;
        }
        .data-item {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: var(--spacing-md) var(--spacing-sm);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
        }
        .data-item .num {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--primary);
            display: block;
        }
        .data-item .num i { color: var(--accent); font-size: 1.6rem; margin-right: 0.3rem; }
        .data-item .label { color: var(--text-secondary); font-size: 0.9rem; margin-top: 0.2rem; display: block; }

        /* ===== FAQ ===== */
        .faq-list { max-width: 760px; margin: 0 auto; }
        .faq-item {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            margin-bottom: var(--spacing-sm);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover { border-color: var(--accent); box-shadow: var(--shadow-sm); }
        .faq-question {
            width: 100%;
            background: none;
            border: none;
            padding: var(--spacing-sm) var(--spacing-md);
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-primary);
            text-align: left;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: var(--transition);
        }
        .faq-question:hover { color: var(--primary-light); }
        .faq-question i { color: var(--accent); transition: var(--transition); font-size: 0.9rem; }
        .faq-question[aria-expanded="true"] i { transform: rotate(180deg); }
        .faq-answer {
            padding: 0 var(--spacing-md) var(--spacing-md);
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
            display: none;
        }
        .faq-answer.open { display: block; }
        .faq-answer p { margin-bottom: 0.5rem; }
        .faq-answer p:last-child { margin-bottom: 0; }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
            padding: var(--spacing-xl) var(--spacing-sm);
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.08;
            pointer-events: none;
        }
        .cta-section h2 { color: var(--text-white); font-size: 2.4rem; margin-bottom: 0.6rem; position: relative; z-index: 2; }
        .cta-section p { color: rgba(255,255,255,0.8); max-width: 520px; margin: 0 auto var(--spacing-md); font-size: 1.05rem; position: relative; z-index: 2; }
        .cta-section .btn { position: relative; z-index: 2; }

        /* ===== Posts List ===== */
        .posts-list { max-width: 860px; margin: 0 auto; }
        .post-item {
            display: flex;
            gap: var(--spacing-sm);
            padding: var(--spacing-sm) 0;
            border-bottom: 1px solid var(--border-color);
            align-items: flex-start;
            transition: var(--transition);
        }
        .post-item:last-child { border-bottom: none; }
        .post-item:hover { padding-left: var(--spacing-xs); }
        .post-item .thumb {
            width: 120px;
            min-width: 120px;
            height: 80px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            background: var(--border-color);
        }
        .post-item .thumb img { width: 100%; height: 100%; object-fit: cover; }
        .post-item .info { flex: 1; }
        .post-item .info h4 { font-size: 1.05rem; margin-bottom: 0.2rem; }
        .post-item .info h4 a { color: var(--text-primary); }
        .post-item .info h4 a:hover { color: var(--accent); }
        .post-item .info .excerpt { color: var(--text-secondary); font-size: 0.9rem; line-height: 1.6; margin-bottom: 0.3rem; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .post-item .info .meta { font-size: 0.8rem; color: var(--text-light); display: flex; gap: 1rem; flex-wrap: wrap; }
        .post-item .info .meta i { margin-right: 0.2rem; }
        .post-item .info .meta .cat { background: rgba(26,58,92,0.08); padding: 0.1rem 0.6rem; border-radius: 12px; color: var(--primary); font-weight: 500; }

        .empty-posts { text-align: center; padding: var(--spacing-lg) 0; color: var(--text-light); font-size: 1.1rem; }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255,255,255,0.7);
            padding: var(--spacing-lg) 0 var(--spacing-md);
        }
        .footer-inner {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: var(--spacing-md);
        }
        .footer-brand .logo { color: var(--text-white); margin-bottom: 0.6rem; }
        .footer-brand .logo span { -webkit-text-fill-color: var(--text-white); background: none; }
        .footer-brand p { font-size: 0.9rem; line-height: 1.7; max-width: 320px; }
        .footer-col h5 { color: var(--text-white); font-size: 1rem; margin-bottom: var(--spacing-sm); }
        .footer-col ul { list-style: none; }
        .footer-col ul li { margin-bottom: 0.4rem; }
        .footer-col ul li a { color: rgba(255,255,255,0.65); font-size: 0.9rem; transition: var(--transition); }
        .footer-col ul li a:hover { color: var(--accent); padding-left: 4px; }
        .footer-col ul li a i { width: 1.2rem; color: var(--accent); }

        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.08);
            margin-top: var(--spacing-md);
            padding-top: var(--spacing-sm);
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.5);
        }
        .footer-bottom a { color: rgba(255,255,255,0.6); }
        .footer-bottom a:hover { color: var(--accent); }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            h1 { font-size: 2.4rem; }
            h2 { font-size: 1.8rem; }
            .hero-content h1 { font-size: 2.6rem; }
            .footer-inner { grid-template-columns: 1fr 1fr; }
        }

        @media (max-width: 768px) {
            .mobile-toggle { display: block; }
            .nav-links {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: var(--bg-white);
                box-shadow: var(--shadow-md);
                padding: var(--spacing-sm);
                border-radius: 0 0 var(--radius-md) var(--radius-md);
                gap: 0.2rem;
                border-top: 2px solid var(--accent);
            }
            .nav-links.open { display: flex; }
            .nav-links li a { padding: 0.7rem 1rem; border-radius: var(--radius-sm); }
            .nav-search-wrap { max-width: 200px; }
            .nav-search-wrap input { padding: 0.5rem 1rem 0.5rem 2.2rem; font-size: 0.85rem; }

            .hero { min-height: 60vh; padding: var(--spacing-lg) var(--spacing-sm); }
            .hero-content h1 { font-size: 2rem; }
            .hero-content p { font-size: 1rem; }
            .hero-stats { gap: var(--spacing-sm); }
            .hero-stat .num { font-size: 1.4rem; }

            .section { padding: var(--spacing-lg) 0; }
            .feature-grid { grid-template-columns: 1fr 1fr; }
            .cover-grid { grid-template-columns: 1fr; }
            .category-grid { grid-template-columns: 1fr 1fr; }
            .steps-grid { grid-template-columns: 1fr 1fr; }
            .data-grid { grid-template-columns: 1fr 1fr; }

            .post-item { flex-direction: column; }
            .post-item .thumb { width: 100%; min-width: unset; height: 160px; }

            .footer-inner { grid-template-columns: 1fr; text-align: center; }
            .footer-brand p { max-width: 100%; }
            .footer-bottom { flex-direction: column; gap: 0.4rem; text-align: center; }

            .cta-section h2 { font-size: 1.8rem; }
        }

        @media (max-width: 520px) {
            .header-inner { flex-wrap: wrap; }
            .nav-search-wrap { order: 3; max-width: 100%; width: 100%; margin: 0.4rem 0 0; }
            .hero-content h1 { font-size: 1.6rem; }
            .feature-grid { grid-template-columns: 1fr; }
            .category-grid { grid-template-columns: 1fr; }
            .steps-grid { grid-template-columns: 1fr; }
            .data-grid { grid-template-columns: 1fr; }
            .btn-lg { padding: 0.8rem 1.6rem; font-size: 0.95rem; }
            .hero-actions { flex-direction: column; align-items: center; }
            .section-title h2 { font-size: 1.4rem; }
        }

        /* ===== Utility ===== */
        .text-center { text-align: center; }
        .mt-1 { margin-top: var(--spacing-sm); }
        .mt-2 { margin-top: var(--spacing-md); }
        .mb-1 { margin-bottom: var(--spacing-sm); }
        .mb-2 { margin-bottom: var(--spacing-md); }
        .gap-1 { gap: var(--spacing-sm); }
        .flex-center { display: flex; align-items: center; justify-content: center; }

        .divider {
            width: 80px;
            height: 4px;
            background: var(--accent);
            border-radius: 4px;
            margin: 0.6rem auto 1rem;
        }

        .back-to-top {
            position: fixed;
            bottom: 2rem;
            right: 2rem;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary);
            color: var(--text-white);
            border: none;
            font-size: 1.2rem;
            cursor: pointer;
            box-shadow: var(--shadow-md);
            transition: var(--transition);
            z-index: 50;
            display: none;
            align-items: center;
            justify-content: center;
        }
        .back-to-top:hover { background: var(--accent); color: var(--primary-dark); transform: translateY(-4px); }
        .back-to-top.show { display: flex; }

/* roulang page: category1 */
/* ===== :root 设计变量 ===== */
        :root {
            --primary: #1a73e8;
            --primary-dark: #0d4f9f;
            --primary-light: #e8f0fe;
            --secondary: #ff6b35;
            --secondary-light: #fff1e8;
            --accent: #00c9a7;
            --accent-light: #e0f7f2;
            --bg-body: #f8fafc;
            --bg-white: #ffffff;
            --bg-card: #ffffff;
            --bg-dark: #0f1a2e;
            --bg-dark-light: #1a2d44;
            --text-primary: #0b1a2e;
            --text-secondary: #4a5a72;
            --text-muted: #8899aa;
            --text-white: #ffffff;
            --border-light: #e2e8f0;
            --border-medium: #cbd5e0;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.04);
            --shadow-md: 0 6px 24px rgba(0,0,0,0.07);
            --shadow-lg: 0 16px 48px rgba(0,0,0,0.10);
            --shadow-hover: 0 12px 36px rgba(26,115,232,0.15);
            --transition: all 0.25s ease;
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --max-width: 1200px;
            --header-h: 72px;
        }

        /* ===== 基础 Reset / Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.65;
            color: var(--text-primary);
            background: var(--bg-body);
            padding-top: var(--header-h);
        }
        a { color: var(--primary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary-dark); }
        a:focus-visible { outline: 3px solid var(--primary); outline-offset: 2px; border-radius: 4px; }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
        ul, ol { list-style: none; padding: 0; margin: 0; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: var(--text-primary); }
        p { margin-bottom: 0.75rem; color: var(--text-secondary); }
        .container { max-width: var(--max-width); margin: 0 auto; padding: 0 20px; width: 100%; }

        /* ===== Header / 导航 ===== */
        .site-header {
            position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
            height: var(--header-h); background: rgba(255,255,255,0.92);
            backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-light);
            box-shadow: 0 1px 6px rgba(0,0,0,0.03);
            transition: var(--transition);
        }
        .site-header .container {
            display: flex; align-items: center; justify-content: space-between;
            height: 100%; gap: 16px;
        }
        .logo {
            display: flex; align-items: center; gap: 10px; font-size: 1.25rem; font-weight: 800;
            color: var(--primary); white-space: nowrap; flex-shrink: 0;
        }
        .logo i { font-size: 1.5rem; color: var(--secondary); }
        .logo span { color: var(--text-primary); }
        .logo:hover { color: var(--primary-dark); }
        .nav-links { display: flex; align-items: center; gap: 6px; flex-wrap: nowrap; }
        .nav-links li a {
            display: flex; align-items: center; gap: 6px; padding: 8px 16px;
            border-radius: var(--radius-sm); font-size: 0.9rem; font-weight: 500;
            color: var(--text-secondary); transition: var(--transition); white-space: nowrap;
        }
        .nav-links li a i { font-size: 1rem; opacity: 0.75; }
        .nav-links li a:hover { background: var(--primary-light); color: var(--primary); }
        .nav-links li a.active { background: var(--primary); color: #fff; box-shadow: 0 4px 14px rgba(26,115,232,0.25); }
        .nav-links li a.active i { opacity: 1; }
        .nav-links li a.nav-cta {
            background: var(--secondary); color: #fff; border-radius: var(--radius-sm);
            padding: 8px 20px; font-weight: 600; box-shadow: 0 4px 14px rgba(255,107,53,0.25);
        }
        .nav-links li a.nav-cta:hover { background: #e55a2b; transform: translateY(-1px); box-shadow: 0 6px 20px rgba(255,107,53,0.35); }
        .nav-toggle { display: none; background: none; border: none; font-size: 1.5rem; color: var(--text-primary); cursor: pointer; padding: 4px; }
        @media (max-width: 820px) {
            .nav-links { display: none; flex-direction: column; position: absolute; top: var(--header-h); left: 0; right: 0; background: rgba(255,255,255,0.98); backdrop-filter: blur(16px); padding: 12px 20px 20px; border-bottom: 1px solid var(--border-light); box-shadow: var(--shadow-md); gap: 4px; }
            .nav-links.open { display: flex; }
            .nav-links li a { padding: 12px 16px; font-size: 1rem; }
            .nav-toggle { display: flex; align-items: center; justify-content: center; }
        }

        /* ===== 面包屑 ===== */
        .breadcrumb-bar { background: var(--bg-white); border-bottom: 1px solid var(--border-light); padding: 12px 0; }
        .breadcrumb-bar .container { display: flex; align-items: center; gap: 8px; font-size: 0.85rem; color: var(--text-muted); flex-wrap: wrap; }
        .breadcrumb-bar a { color: var(--text-secondary); }
        .breadcrumb-bar a:hover { color: var(--primary); }
        .breadcrumb-bar span { color: var(--text-muted); }
        .breadcrumb-bar .current { color: var(--text-primary); font-weight: 500; }

        /* ===== Hero / Banner ===== */
        .category-hero {
            position: relative; padding: 80px 0 70px; overflow: hidden;
            background: var(--bg-dark); min-height: 340px;
            display: flex; align-items: center;
        }
        .category-hero .hero-bg {
            position: absolute; inset: 0; z-index: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.35; transform: scale(1.02);
        }
        .category-hero .container { position: relative; z-index: 2; text-align: center; }
        .category-hero h1 { font-size: 2.8rem; color: var(--text-white); margin-bottom: 16px; letter-spacing: -0.5px; }
        .category-hero h1 i { color: var(--secondary); margin-right: 12px; }
        .category-hero p { font-size: 1.2rem; color: rgba(255,255,255,0.85); max-width: 680px; margin: 0 auto 24px; line-height: 1.6; }
        .category-hero .hero-tags { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; }
        .category-hero .hero-tags span {
            display: inline-flex; align-items: center; gap: 6px; background: rgba(255,255,255,0.12);
            backdrop-filter: blur(4px); padding: 8px 18px; border-radius: 40px; font-size: 0.9rem; color: rgba(255,255,255,0.9); border: 1px solid rgba(255,255,255,0.15);
        }
        .category-hero .hero-tags span i { color: var(--secondary); }
        @media (max-width: 768px) {
            .category-hero { padding: 56px 0 48px; min-height: 260px; }
            .category-hero h1 { font-size: 2rem; }
            .category-hero p { font-size: 1rem; }
        }
        @media (max-width: 520px) {
            .category-hero h1 { font-size: 1.6rem; }
        }

        /* ===== 通用板块 ===== */
        .section { padding: 70px 0; }
        .section-title { text-align: center; margin-bottom: 48px; }
        .section-title h2 { font-size: 2rem; margin-bottom: 12px; }
        .section-title h2 i { color: var(--primary); margin-right: 8px; }
        .section-title p { font-size: 1.05rem; color: var(--text-muted); max-width: 560px; margin: 0 auto; }
        .section-bg-light { background: var(--bg-white); }
        .section-bg-alt { background: var(--primary-light); }

        /* ===== 卡片网格 ===== */
        .card-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 24px; }
        .card-item {
            background: var(--bg-card); border-radius: var(--radius-md); overflow: hidden;
            box-shadow: var(--shadow-sm); border: 1px solid var(--border-light);
            transition: var(--transition); display: flex; flex-direction: column;
        }
        .card-item:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); border-color: var(--primary); }
        .card-item .card-img { width: 100%; height: 180px; object-fit: cover; border-radius: 0; }
        .card-item .card-body { padding: 20px 22px 24px; flex: 1; display: flex; flex-direction: column; }
        .card-item .card-body h3 { font-size: 1.15rem; margin-bottom: 8px; }
        .card-item .card-body h3 a { color: var(--text-primary); }
        .card-item .card-body h3 a:hover { color: var(--primary); }
        .card-item .card-body p { font-size: 0.92rem; color: var(--text-secondary); flex: 1; margin-bottom: 14px; }
        .card-item .card-meta { display: flex; align-items: center; gap: 14px; font-size: 0.82rem; color: var(--text-muted); margin-top: auto; }
        .card-item .card-meta i { width: 14px; }
        .card-item .badge {
            display: inline-block; padding: 2px 12px; border-radius: 40px; font-size: 0.75rem;
            font-weight: 600; background: var(--primary-light); color: var(--primary); margin-bottom: 10px; align-self: flex-start;
        }
        .card-item .badge.hot { background: var(--secondary-light); color: var(--secondary); }
        .card-item .badge.new { background: var(--accent-light); color: #008b72; }

        /* ===== 特色分类卡片 (大图) ===== */
        .feature-card {
            position: relative; border-radius: var(--radius-lg); overflow: hidden;
            background: var(--bg-dark); min-height: 320px; display: flex; align-items: flex-end;
            box-shadow: var(--shadow-md); transition: var(--transition);
        }
        .feature-card .fc-bg {
            position: absolute; inset: 0; z-index: 0;
            background: center center / cover no-repeat; opacity: 0.45; transition: var(--transition);
        }
        .feature-card:hover .fc-bg { opacity: 0.55; transform: scale(1.03); }
        .feature-card .fc-overlay {
            position: absolute; inset: 0; z-index: 1;
            background: linear-gradient(to top, rgba(15,26,46,0.85) 0%, rgba(15,26,46,0.2) 60%, transparent 100%);
        }
        .feature-card .fc-content { position: relative; z-index: 2; padding: 32px 28px; width: 100%; }
        .feature-card .fc-content h3 { font-size: 1.6rem; color: #fff; margin-bottom: 6px; }
        .feature-card .fc-content h3 i { color: var(--secondary); margin-right: 8px; }
        .feature-card .fc-content p { color: rgba(255,255,255,0.85); font-size: 0.95rem; max-width: 480px; margin-bottom: 14px; }
        .feature-card .fc-content .fc-link { display: inline-flex; align-items: center; gap: 8px; color: #fff; font-weight: 600; background: var(--primary); padding: 10px 22px; border-radius: 40px; font-size: 0.9rem; transition: var(--transition); }
        .feature-card .fc-content .fc-link:hover { background: var(--primary-dark); transform: translateX(4px); }

        /* ===== 数据统计 ===== */
        .stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 20px; text-align: center; }
        .stat-item { padding: 24px 16px; background: var(--bg-card); border-radius: var(--radius-md); box-shadow: var(--shadow-sm); border: 1px solid var(--border-light); }
        .stat-item .stat-number { font-size: 2.4rem; font-weight: 800; color: var(--primary); line-height: 1.2; }
        .stat-item .stat-number i { font-size: 1.8rem; margin-right: 6px; color: var(--secondary); }
        .stat-item .stat-label { font-size: 0.9rem; color: var(--text-muted); margin-top: 6px; }

        /* ===== 流程步骤 ===== */
        .steps { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 30px; counter-reset: step; }
        .step-item { text-align: center; padding: 24px 16px; position: relative; }
        .step-item::before { counter-increment: step; content: counter(step); position: absolute; top: -6px; left: 50%; transform: translateX(-50%); width: 40px; height: 40px; background: var(--primary); color: #fff; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 1.1rem; box-shadow: 0 4px 14px rgba(26,115,232,0.25); }
        .step-item .step-icon { font-size: 2.2rem; color: var(--primary); margin-bottom: 12px; margin-top: 28px; }
        .step-item h4 { font-size: 1.05rem; margin-bottom: 6px; }
        .step-item p { font-size: 0.88rem; color: var(--text-muted); margin: 0; }

        /* ===== FAQ ===== */
        .faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
        .faq-item { background: var(--bg-card); border-radius: var(--radius-md); box-shadow: var(--shadow-sm); border: 1px solid var(--border-light); overflow: hidden; transition: var(--transition); }
        .faq-item:hover { box-shadow: var(--shadow-md); }
        .faq-item .faq-q { padding: 18px 22px; font-weight: 600; font-size: 1rem; cursor: pointer; display: flex; align-items: center; justify-content: space-between; gap: 12px; color: var(--text-primary); background: none; border: none; width: 100%; text-align: left; font-family: inherit; transition: var(--transition); }
        .faq-item .faq-q i { color: var(--primary); transition: var(--transition); font-size: 1.1rem; }
        .faq-item .faq-q[aria-expanded="true"] i { transform: rotate(180deg); }
        .faq-item .faq-a { padding: 0 22px 18px; font-size: 0.92rem; color: var(--text-secondary); line-height: 1.7; display: none; }
        .faq-item .faq-a.show { display: block; }

        /* ===== CTA ===== */
        .cta-section { background: var(--bg-dark); position: relative; overflow: hidden; padding: 70px 0; }
        .cta-section .cta-bg { position: absolute; inset: 0; z-index: 0; background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat; opacity: 0.2; }
        .cta-section .container { position: relative; z-index: 2; text-align: center; }
        .cta-section h2 { font-size: 2.2rem; color: #fff; margin-bottom: 12px; }
        .cta-section p { font-size: 1.1rem; color: rgba(255,255,255,0.8); max-width: 520px; margin: 0 auto 28px; }
        .cta-section .cta-btn {
            display: inline-flex; align-items: center; gap: 10px; background: var(--secondary);
            color: #fff; padding: 14px 36px; border-radius: 50px; font-size: 1.05rem; font-weight: 700;
            transition: var(--transition); box-shadow: 0 6px 24px rgba(255,107,53,0.3);
        }
        .cta-section .cta-btn:hover { background: #e55a2b; transform: translateY(-2px); box-shadow: 0 10px 32px rgba(255,107,53,0.4); color: #fff; }

        /* ===== 页脚 ===== */
        .site-footer { background: var(--bg-dark); color: rgba(255,255,255,0.8); padding: 60px 0 0; }
        .footer-inner { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: 36px; margin-bottom: 36px; }
        .footer-brand .logo { color: #fff; font-size: 1.2rem; margin-bottom: 14px; }
        .footer-brand .logo span { color: #fff; }
        .footer-brand p { font-size: 0.9rem; color: rgba(255,255,255,0.6); max-width: 360px; }
        .footer-col h5 { color: #fff; font-size: 1rem; margin-bottom: 16px; font-weight: 600; }
        .footer-col ul li { margin-bottom: 8px; }
        .footer-col ul li a { color: rgba(255,255,255,0.65); font-size: 0.88rem; display: inline-flex; align-items: center; gap: 8px; }
        .footer-col ul li a i { font-size: 0.7rem; color: var(--primary); }
        .footer-col ul li a:hover { color: #fff; }
        .footer-bottom { border-top: 1px solid rgba(255,255,255,0.08); padding: 20px 0; display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px; font-size: 0.85rem; color: rgba(255,255,255,0.5); }
        .footer-bottom a { color: var(--primary); }
        @media (max-width: 900px) { .footer-inner { grid-template-columns: 1fr 1fr; } }
        @media (max-width: 540px) { .footer-inner { grid-template-columns: 1fr; } .footer-bottom { flex-direction: column; text-align: center; } }

        /* ===== 响应式微调 ===== */
        @media (max-width: 1024px) { .section { padding: 56px 0; } .section-title h2 { font-size: 1.7rem; } }
        @media (max-width: 768px) { .card-grid { grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 18px; } .stats-grid { grid-template-columns: repeat(2, 1fr); } .steps { grid-template-columns: 1fr 1fr; } .section-title { margin-bottom: 32px; } }
        @media (max-width: 520px) { .card-grid { grid-template-columns: 1fr; } .steps { grid-template-columns: 1fr; } .stats-grid { grid-template-columns: 1fr 1fr; } .category-hero h1 { font-size: 1.4rem; } .feature-card { min-height: 240px; } .feature-card .fc-content h3 { font-size: 1.2rem; } .cta-section h2 { font-size: 1.5rem; } }

        /* ===== Foundation override 保持风格一致 ===== */
        .grid-container { max-width: var(--max-width); padding-left: 20px; padding-right: 20px; }
        .cell { margin-bottom: 0; }
        .button { border-radius: var(--radius-sm); transition: var(--transition); }

/* roulang page: article */
/* ===== 设计变量 ===== */
        :root {
            --primary: #2563eb;
            --primary-dark: #1d4ed8;
            --primary-light: #dbeafe;
            --accent: #f59e0b;
            --accent-dark: #d97706;
            --success: #10b981;
            --bg-body: #f8fafc;
            --bg-card: #ffffff;
            --bg-dark: #0f172a;
            --bg-dark-alt: #1e293b;
            --text-primary: #0f172a;
            --text-secondary: #475569;
            --text-muted: #94a3b8;
            --text-inverse: #f1f5f9;
            --border: #e2e8f0;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
            --shadow: 0 4px 16px rgba(0,0,0,0.08);
            --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --font: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
            --max-width: 1200px;
            --header-h: 72px;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body {
            font-family: var(--font);
            background: var(--bg-body);
            color: var(--text-primary);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        a { color: var(--primary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary-dark); }
        img { max-width: 100%; height: auto; display: block; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: var(--text-primary); }
        h1 { font-size: 2rem; }
        h2 { font-size: 1.65rem; }
        h3 { font-size: 1.3rem; }
        h4 { font-size: 1.1rem; }
        p { margin-bottom: 1rem; }
        .container { max-width: var(--max-width); margin: 0 auto; padding: 0 20px; }

        /* ===== Header / Nav ===== */
        .site-header {
            background: var(--bg-card);
            border-bottom: 1px solid var(--border);
            position: sticky; top: 0; z-index: 100;
            box-shadow: var(--shadow-sm);
            height: var(--header-h);
        }
        .site-header .container {
            display: flex; align-items: center; justify-content: space-between;
            height: 100%; gap: 16px;
        }
        .logo {
            display: flex; align-items: center; gap: 10px;
            font-size: 1.2rem; font-weight: 800; color: var(--primary);
            white-space: nowrap;
        }
        .logo i { font-size: 1.4rem; color: var(--accent); }
        .logo span { background: linear-gradient(135deg, var(--primary), var(--primary-dark)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }

        .nav-links { display: flex; align-items: center; gap: 6px; }
        .nav-links li a {
            display: flex; align-items: center; gap: 6px;
            padding: 8px 16px; border-radius: var(--radius-sm);
            font-size: 0.95rem; font-weight: 500; color: var(--text-secondary);
            transition: var(--transition); white-space: nowrap;
        }
        .nav-links li a i { font-size: 0.9rem; }
        .nav-links li a:hover,
        .nav-links li a.active { background: var(--primary-light); color: var(--primary); }
        .nav-links li a.nav-cta {
            background: var(--primary); color: #fff; padding: 8px 20px;
            border-radius: 30px; font-weight: 600;
        }
        .nav-links li a.nav-cta:hover { background: var(--primary-dark); transform: translateY(-1px); box-shadow: var(--shadow); }

        .search-box {
            display: flex; align-items: center; background: var(--bg-body);
            border: 1px solid var(--border); border-radius: 30px;
            padding: 0 16px; transition: var(--transition); flex: 1; max-width: 320px;
        }
        .search-box:focus-within { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(37,99,235,0.15); }
        .search-box i { color: var(--text-muted); font-size: 0.95rem; }
        .search-box input {
            border: none; background: transparent; padding: 8px 10px;
            font-size: 0.95rem; outline: none; width: 100%; color: var(--text-primary);
        }
        .search-box input::placeholder { color: var(--text-muted); }

        .menu-toggle { display: none; background: none; border: none; font-size: 1.5rem; color: var(--text-primary); cursor: pointer; padding: 4px; }

        /* ===== Hero Banner ===== */
        .article-banner {
            position: relative; min-height: 260px; display: flex; align-items: center;
            background: linear-gradient(135deg, var(--bg-dark) 0%, var(--bg-dark-alt) 100%);
            overflow: hidden; margin-bottom: 40px;
        }
        .article-banner .bg-overlay {
            position: absolute; inset: 0; z-index: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.2; mix-blend-mode: overlay;
        }
        .article-banner .container { position: relative; z-index: 1; padding: 60px 20px; text-align: center; }
        .article-banner h1 { color: var(--text-inverse); font-size: 2.2rem; margin-bottom: 12px; }
        .article-banner .meta {
            display: flex; justify-content: center; gap: 24px; flex-wrap: wrap;
            color: var(--text-muted); font-size: 0.95rem;
        }
        .article-banner .meta i { margin-right: 6px; }
        .article-banner .meta .badge {
            display: inline-block; background: var(--accent); color: #fff;
            padding: 2px 14px; border-radius: 30px; font-size: 0.85rem; font-weight: 600;
        }

        /* ===== Article Content ===== */
        .article-main { padding: 0 0 60px; }
        .article-body {
            background: var(--bg-card); border-radius: var(--radius);
            box-shadow: var(--shadow); padding: 40px 48px;
            border: 1px solid var(--border);
        }
        .article-body .content {
            font-size: 1.05rem; line-height: 1.85; color: var(--text-secondary);
        }
        .article-body .content p { margin-bottom: 1.4rem; }
        .article-body .content h2,
        .article-body .content h3 { margin-top: 2rem; margin-bottom: 0.8rem; color: var(--text-primary); }
        .article-body .content ul,
        .article-body .content ol { margin-bottom: 1.4rem; padding-left: 1.5rem; }
        .article-body .content li { margin-bottom: 0.5rem; list-style: disc; }
        .article-body .content a { color: var(--primary); text-decoration: underline; }
        .article-body .content img { border-radius: var(--radius-sm); margin: 1.5rem 0; box-shadow: var(--shadow-sm); }
        .article-body .content blockquote {
            border-left: 4px solid var(--primary); background: var(--primary-light);
            padding: 12px 20px; margin: 1.5rem 0; border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-secondary);
        }
        .article-body .content .tag-list { display: flex; flex-wrap: wrap; gap: 8px; margin: 1.5rem 0; }
        .article-body .content .tag-list span {
            background: var(--bg-body); padding: 4px 14px; border-radius: 30px;
            font-size: 0.85rem; color: var(--text-secondary); border: 1px solid var(--border);
        }

        .article-footer-meta {
            display: flex; justify-content: space-between; align-items: center;
            flex-wrap: wrap; gap: 12px; margin-top: 32px; padding-top: 24px;
            border-top: 1px solid var(--border);
        }
        .article-footer-meta .share a {
            display: inline-flex; align-items: center; justify-content: center;
            width: 38px; height: 38px; border-radius: 50%;
            background: var(--bg-body); color: var(--text-secondary);
            border: 1px solid var(--border); transition: var(--transition);
        }
        .article-footer-meta .share a:hover { background: var(--primary); color: #fff; border-color: var(--primary); }
        .article-footer-meta .back-link a { font-weight: 500; color: var(--primary); }
        .article-footer-meta .back-link a i { margin-right: 6px; }

        /* ===== Related / CTA ===== */
        .related-section { margin-top: 48px; }
        .related-section h3 { margin-bottom: 24px; display: flex; align-items: center; gap: 10px; }
        .related-section h3 i { color: var(--accent); }
        .related-grid {
            display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 20px;
        }
        .related-card {
            background: var(--bg-card); border-radius: var(--radius-sm);
            border: 1px solid var(--border); padding: 20px;
            transition: var(--transition);
        }
        .related-card:hover { box-shadow: var(--shadow); transform: translateY(-3px); }
        .related-card .rc-title { font-weight: 600; font-size: 1rem; margin-bottom: 6px; }
        .related-card .rc-title a { color: var(--text-primary); }
        .related-card .rc-title a:hover { color: var(--primary); }
        .related-card .rc-meta { font-size: 0.85rem; color: var(--text-muted); }

        .article-cta {
            margin-top: 48px; background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            border-radius: var(--radius); padding: 40px 48px; text-align: center;
            color: #fff;
        }
        .article-cta h3 { color: #fff; font-size: 1.5rem; margin-bottom: 8px; }
        .article-cta p { color: rgba(255,255,255,0.85); margin-bottom: 20px; }
        .article-cta .button {
            background: #fff; color: var(--primary); padding: 12px 36px;
            border-radius: 30px; font-weight: 700; font-size: 1rem;
            transition: var(--transition); display: inline-block;
        }
        .article-cta .button:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,0,0,0.2); }

        /* ===== 404 State ===== */
        .not-found-box {
            text-align: center; padding: 80px 20px; background: var(--bg-card);
            border-radius: var(--radius); box-shadow: var(--shadow);
        }
        .not-found-box i { font-size: 4rem; color: var(--text-muted); margin-bottom: 20px; }
        .not-found-box h2 { font-size: 1.8rem; margin-bottom: 12px; }
        .not-found-box p { color: var(--text-secondary); margin-bottom: 24px; }
        .not-found-box .button { background: var(--primary); color: #fff; padding: 12px 32px; border-radius: 30px; font-weight: 600; }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark); color: var(--text-inverse); padding: 60px 0 30px;
            margin-top: 60px;
        }
        .footer-inner { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
        .footer-brand .logo { color: #fff; margin-bottom: 16px; }
        .footer-brand .logo span { -webkit-text-fill-color: #fff; background: none; }
        .footer-brand p { color: var(--text-muted); font-size: 0.95rem; line-height: 1.7; }
        .footer-col h5 { color: #fff; font-size: 1rem; margin-bottom: 16px; font-weight: 600; }
        .footer-col ul li { margin-bottom: 8px; }
        .footer-col ul li a {
            color: var(--text-muted); font-size: 0.92rem; display: flex; align-items: center; gap: 8px;
            transition: var(--transition);
        }
        .footer-col ul li a i { font-size: 0.7rem; color: var(--primary); }
        .footer-col ul li a:hover { color: #fff; padding-left: 4px; }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.08); padding-top: 24px;
            display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px;
            font-size: 0.88rem; color: var(--text-muted);
        }
        .footer-bottom a { color: var(--primary-light); }
        .footer-bottom a:hover { color: #fff; }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .footer-inner { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 768px) {
            .menu-toggle { display: block; }
            .nav-links {
                display: none; position: absolute; top: var(--header-h); left: 0; right: 0;
                background: var(--bg-card); flex-direction: column; padding: 16px 20px;
                border-bottom: 2px solid var(--border); box-shadow: var(--shadow);
            }
            .nav-links.open { display: flex; }
            .nav-links li a { width: 100%; padding: 12px 16px; }
            .search-box { max-width: 200px; }
            .article-body { padding: 24px 20px; }
            .article-banner h1 { font-size: 1.6rem; }
            .article-cta { padding: 28px 20px; }
            .article-cta h3 { font-size: 1.2rem; }
            .related-grid { grid-template-columns: 1fr; }
            .footer-inner { grid-template-columns: 1fr; gap: 28px; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .article-footer-meta { flex-direction: column; align-items: flex-start; }
        }
        @media (max-width: 520px) {
            .site-header .container { gap: 8px; }
            .logo { font-size: 1rem; }
            .logo span { max-width: 120px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
            .search-box { max-width: 140px; }
            .search-box input { font-size: 0.85rem; padding: 6px 8px; }
            .article-banner { min-height: 200px; }
            .article-banner h1 { font-size: 1.3rem; }
            .article-body { padding: 16px 12px; }
            .article-body .content { font-size: 0.98rem; }
            .not-found-box { padding: 40px 16px; }
        }

        /* ===== Utility ===== */
        .text-center { text-align: center; }
        .mt-1 { margin-top: 1rem; }
        .mt-2 { margin-top: 2rem; }
        .mb-1 { margin-bottom: 1rem; }
        .mb-2 { margin-bottom: 2rem; }
        .gap-1 { gap: 1rem; }
        .flex-center { display: flex; align-items: center; justify-content: center; }

/* roulang page: category2 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a4b8c;
            --primary-light: #2a6bc4;
            --primary-dark: #0f2d52;
            --secondary: #e8a838;
            --secondary-light: #f0c060;
            --accent: #1a8c6f;
            --bg-light: #f7f9fc;
            --bg-white: #ffffff;
            --bg-card: #ffffff;
            --text-dark: #1a2a3a;
            --text-mid: #3d4f60;
            --text-light: #6f8a9e;
            --border-light: #e2e8f0;
            --border-card: #eef2f7;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(26, 75, 140, 0.06);
            --shadow-md: 0 6px 24px rgba(26, 75, 140, 0.10);
            --shadow-lg: 0 16px 48px rgba(26, 75, 140, 0.14);
            --shadow-hover: 0 20px 56px rgba(26, 75, 140, 0.18);
            --transition: all 0.30s cubic-bezier(0.22, 1, 0.36, 1);
            --font-base: 'Segoe UI', system-ui, -apple-system, 'Helvetica Neue', Arial, sans-serif;
            --container-max: 1200px;
            --nav-height: 72px;
        }

        /* ===== Reset / Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

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

        body {
            font-family: var(--font-base);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-dark);
            background: var(--bg-light);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover,
        a:focus-visible {
            color: var(--primary-light);
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
            border: none;
            outline: none;
        }

        ul,
        ol {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.25;
            font-weight: 700;
            color: var(--text-dark);
            letter-spacing: -0.01em;
        }

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

        /* ===== 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-light);
            height: var(--nav-height);
            transition: var(--transition);
        }
        .site-header.scrolled {
            box-shadow: var(--shadow-sm);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--nav-height);
            gap: 16px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--primary-dark);
            letter-spacing: -0.02em;
            flex-shrink: 0;
        }
        .logo i {
            font-size: 1.6rem;
            color: var(--secondary);
        }
        .logo span {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .logo:hover span {
            -webkit-text-fill-color: var(--primary-light);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: nowrap;
        }
        .nav-links li a {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: 40px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-mid);
            transition: var(--transition);
            white-space: nowrap;
        }
        .nav-links li a i {
            font-size: 0.9rem;
            color: var(--text-light);
            transition: var(--transition);
        }
        .nav-links li a:hover,
        .nav-links li a:focus-visible {
            background: rgba(26, 75, 140, 0.06);
            color: var(--primary);
        }
        .nav-links li a:hover i,
        .nav-links li a:focus-visible i {
            color: var(--primary);
        }
        .nav-links li a.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(26, 75, 140, 0.25);
        }
        .nav-links li a.active i {
            color: #fff;
        }
        .nav-links li a.nav-cta {
            background: var(--secondary);
            color: #1a2a3a;
            box-shadow: 0 4px 14px rgba(232, 168, 56, 0.30);
            font-weight: 700;
        }
        .nav-links li a.nav-cta i {
            color: #1a2a3a;
        }
        .nav-links li a.nav-cta:hover {
            background: var(--secondary-light);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(232, 168, 56, 0.40);
        }

        /* 搜索框（装饰性） */
        .nav-search {
            display: flex;
            align-items: center;
            background: var(--bg-light);
            border: 1px solid var(--border-light);
            border-radius: 40px;
            padding: 0 16px;
            height: 40px;
            min-width: 200px;
            transition: var(--transition);
        }
        .nav-search:focus-within {
            border-color: var(--primary-light);
            box-shadow: 0 0 0 3px rgba(26, 75, 140, 0.10);
        }
        .nav-search i {
            color: var(--text-light);
            font-size: 0.9rem;
            margin-right: 8px;
        }
        .nav-search input {
            background: transparent;
            border: none;
            padding: 6px 0;
            font-size: 0.9rem;
            color: var(--text-dark);
            width: 100%;
        }
        .nav-search input::placeholder {
            color: var(--text-light);
        }

        /* 移动端汉堡 */
        .hamburger {
            display: none;
            background: none;
            font-size: 1.6rem;
            color: var(--text-dark);
            cursor: pointer;
            padding: 4px 8px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }
        .hamburger:hover {
            background: rgba(26, 75, 140, 0.06);
        }

        /* ===== Hero / 页面 Banner ===== */
        .page-hero {
            margin-top: var(--nav-height);
            padding: 100px 0 70px;
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 70%, var(--primary-light) 100%);
            position: relative;
            overflow: hidden;
            min-height: 320px;
            display: flex;
            align-items: center;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.15;
            mix-blend-mode: overlay;
        }
        .page-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(circle at 30% 40%, rgba(232, 168, 56, 0.12), transparent 70%);
        }
        .page-hero .container {
            position: relative;
            z-index: 2;
            text-align: center;
            color: #fff;
        }
        .page-hero h1 {
            font-size: 3rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: -0.02em;
            text-shadow: 0 4px 20px rgba(0, 0, 0, 0.20);
        }
        .page-hero h1 i {
            color: var(--secondary);
            margin-right: 10px;
        }
        .page-hero p {
            font-size: 1.2rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 660px;
            margin: 0 auto 28px;
            line-height: 1.7;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(6px);
            padding: 6px 20px;
            border-radius: 40px;
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.90);
            border: 1px solid rgba(255, 255, 255, 0.20);
            margin-bottom: 20px;
        }
        .hero-badge i {
            color: var(--secondary);
        }

        /* ===== 通用板块 ===== */
        .section {
            padding: 80px 0;
        }
        .section-alt {
            background: var(--bg-white);
        }
        .section-title {
            text-align: center;
            margin-bottom: 56px;
        }
        .section-title h2 {
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 12px;
        }
        .section-title h2 i {
            color: var(--secondary);
            margin-right: 8px;
        }
        .section-title p {
            font-size: 1.1rem;
            color: var(--text-light);
            max-width: 540px;
            margin: 0 auto;
        }
        .section-divider {
            width: 60px;
            height: 4px;
            background: linear-gradient(90deg, var(--secondary), var(--secondary-light));
            border-radius: 4px;
            margin: 16px auto 0;
        }

        /* ===== 卡片网格 (Foundation) ===== */
        .card-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 28px;
            justify-content: center;
        }
        .card-grid .card-item {
            flex: 1 1 300px;
            max-width: 360px;
            min-width: 260px;
        }

        .tip-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 32px 28px 28px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-card);
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .tip-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: var(--primary-light);
        }
        .tip-card .card-icon {
            width: 56px;
            height: 56px;
            border-radius: var(--radius-md);
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: #fff;
            margin-bottom: 18px;
            flex-shrink: 0;
        }
        .tip-card .card-icon.alt {
            background: linear-gradient(135deg, var(--secondary), var(--secondary-light));
            color: #1a2a3a;
        }
        .tip-card .card-icon.green {
            background: linear-gradient(135deg, var(--accent), #24b88a);
        }
        .tip-card h3 {
            font-size: 1.2rem;
            margin-bottom: 10px;
            font-weight: 700;
        }
        .tip-card p {
            color: var(--text-mid);
            font-size: 0.95rem;
            line-height: 1.6;
            flex: 1;
        }
        .tip-card .tag-group {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            margin-top: 16px;
        }
        .tip-card .tag {
            background: var(--bg-light);
            padding: 4px 14px;
            border-radius: 40px;
            font-size: 0.8rem;
            color: var(--text-light);
            border: 1px solid var(--border-light);
        }

        /* ===== 步骤流程 ===== */
        .steps-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
            justify-content: center;
            counter-reset: step-counter;
        }
        .step-item {
            flex: 1 1 200px;
            max-width: 240px;
            text-align: center;
            position: relative;
            counter-increment: step-counter;
        }
        .step-item::before {
            content: counter(step-counter);
            display: block;
            width: 48px;
            height: 48px;
            line-height: 48px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-size: 1.2rem;
            font-weight: 700;
            margin: 0 auto 14px;
            box-shadow: 0 6px 20px rgba(26, 75, 140, 0.20);
        }
        .step-item h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .step-item p {
            font-size: 0.9rem;
            color: var(--text-light);
            line-height: 1.5;
        }
        .step-item:not(:last-child)::after {
            content: '\f061';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            position: absolute;
            right: -18px;
            top: 20px;
            color: var(--secondary);
            font-size: 1.1rem;
            opacity: 0.6;
        }

        /* ===== 图文区块 (Foundation 网格) ===== */
        .media-block {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 40px;
            margin-bottom: 48px;
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 32px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-card);
        }
        .media-block:last-child {
            margin-bottom: 0;
        }
        .media-block .media-img {
            flex: 1 1 280px;
            max-width: 400px;
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }
        .media-block .media-img img {
            width: 100%;
            height: 220px;
            object-fit: cover;
            border-radius: var(--radius-md);
        }
        .media-block .media-text {
            flex: 1 1 300px;
        }
        .media-block .media-text h3 {
            font-size: 1.3rem;
            margin-bottom: 10px;
        }
        .media-block .media-text h3 i {
            color: var(--secondary);
            margin-right: 6px;
        }
        .media-block .media-text p {
            color: var(--text-mid);
            font-size: 0.95rem;
            line-height: 1.7;
            margin-bottom: 12px;
        }
        .media-block .media-text .btn-sm {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 22px;
            border-radius: 40px;
            background: var(--primary);
            color: #fff;
            font-size: 0.9rem;
            font-weight: 600;
            transition: var(--transition);
            border: none;
            cursor: pointer;
        }
        .media-block .media-text .btn-sm:hover {
            background: var(--primary-light);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(26, 75, 140, 0.25);
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-card);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--primary-light);
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            font-weight: 600;
            font-size: 1.05rem;
            color: var(--text-dark);
            cursor: pointer;
            background: transparent;
            border: none;
            width: 100%;
            text-align: left;
            gap: 12px;
            transition: var(--transition);
        }
        .faq-question i {
            color: var(--primary);
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-question .fa-chevron-down {
            color: var(--text-light);
            font-size: 0.85rem;
            transition: var(--transition);
        }
        .faq-item.open .faq-question .fa-chevron-down {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-answer {
            max-height: 0;
            padding: 0 24px;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            color: var(--text-mid);
            font-size: 0.95rem;
            line-height: 1.7;
            border-top: 0 solid var(--border-light);
        }
        .faq-item.open .faq-answer {
            max-height: 400px;
            padding: 16px 24px 20px;
            border-top-width: 1px;
        }
        .faq-answer a {
            color: var(--primary);
            font-weight: 500;
        }
        .faq-answer a:hover {
            text-decoration: underline;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
            padding: 72px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.08;
            mix-blend-mode: overlay;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            font-size: 2.2rem;
            color: #fff;
            margin-bottom: 14px;
        }
        .cta-section p {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 520px;
            margin: 0 auto 28px;
        }
        .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 16px 44px;
            border-radius: 50px;
            background: var(--secondary);
            color: #1a2a3a;
            font-size: 1.15rem;
            font-weight: 700;
            box-shadow: 0 8px 28px rgba(232, 168, 56, 0.35);
            transition: var(--transition);
            border: none;
            cursor: pointer;
        }
        .cta-btn i {
            font-size: 1.1rem;
        }
        .cta-btn:hover {
            background: var(--secondary-light);
            transform: translateY(-4px);
            box-shadow: 0 16px 40px rgba(232, 168, 56, 0.45);
            color: #1a2a3a;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, 0.80);
            padding: 60px 0 30px;
        }
        .site-footer a {
            color: rgba(255, 255, 255, 0.75);
        }
        .site-footer a:hover {
            color: var(--secondary);
        }
        .footer-inner {
            display: flex;
            flex-wrap: wrap;
            gap: 40px;
            justify-content: space-between;
            margin-bottom: 40px;
        }
        .footer-brand {
            flex: 2 1 280px;
            max-width: 340px;
        }
        .footer-brand .logo {
            font-size: 1.3rem;
            color: #fff;
            margin-bottom: 14px;
        }
        .footer-brand .logo span {
            -webkit-text-fill-color: #fff;
            background: none;
        }
        .footer-brand .logo i {
            color: var(--secondary);
        }
        .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.60);
        }
        .footer-col {
            flex: 1 1 160px;
            min-width: 140px;
        }
        .footer-col h5 {
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.02em;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            font-size: 0.9rem;
            display: flex;
            align-items: center;
            gap: 6px;
            color: rgba(255, 255, 255, 0.65);
            transition: var(--transition);
        }
        .footer-col ul li a i {
            font-size: 0.7rem;
            color: var(--secondary);
        }
        .footer-col ul li a:hover {
            color: var(--secondary);
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.10);
            padding-top: 24px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.50);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.70);
        }
        .footer-bottom a:hover {
            color: var(--secondary);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .page-hero h1 {
                font-size: 2.4rem;
            }
            .section-title h2 {
                font-size: 1.8rem;
            }
            .step-item:not(:last-child)::after {
                display: none;
            }
            .media-block {
                padding: 24px;
                flex-direction: column;
            }
            .media-block .media-img {
                max-width: 100%;
                flex: 1 1 auto;
            }
            .media-block .media-img img {
                height: 200px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --nav-height: 64px;
            }

            .nav-search {
                display: none;
            }

            .hamburger {
                display: block;
            }

            .nav-links {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(16px);
                flex-direction: column;
                padding: 16px 24px 28px;
                gap: 4px;
                box-shadow: var(--shadow-md);
                border-bottom: 1px solid var(--border-light);
                transform: translateY(-120%);
                opacity: 0;
                pointer-events: none;
                transition: var(--transition);
                border-radius: 0 0 var(--radius-lg) var(--radius-lg);
            }
            .nav-links.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: all;
            }
            .nav-links li a {
                padding: 12px 18px;
                font-size: 1rem;
                border-radius: var(--radius-sm);
            }
            .nav-links li a.nav-cta {
                margin-top: 6px;
            }

            .page-hero {
                padding: 80px 0 50px;
                min-height: 260px;
            }
            .page-hero h1 {
                font-size: 1.9rem;
            }
            .page-hero p {
                font-size: 1rem;
            }

            .section {
                padding: 60px 0;
            }
            .section-title {
                margin-bottom: 40px;
            }
            .section-title h2 {
                font-size: 1.5rem;
            }

            .card-grid .card-item {
                flex: 1 1 100%;
                max-width: 100%;
            }
            .tip-card {
                padding: 24px 20px;
            }

            .steps-grid {
                gap: 32px;
            }
            .step-item {
                flex: 1 1 140px;
                max-width: 160px;
            }
            .step-item::before {
                width: 40px;
                height: 40px;
                line-height: 40px;
                font-size: 1rem;
            }

            .media-block {
                padding: 20px;
            }
            .media-block .media-img img {
                height: 170px;
            }

            .faq-question {
                font-size: 0.95rem;
                padding: 14px 18px;
            }
            .faq-answer {
                font-size: 0.9rem;
            }
            .faq-item.open .faq-answer {
                padding: 12px 18px 16px;
            }

            .cta-section h2 {
                font-size: 1.6rem;
            }
            .cta-btn {
                padding: 14px 32px;
                font-size: 1rem;
            }

            .footer-inner {
                flex-direction: column;
                gap: 28px;
            }
            .footer-brand {
                max-width: 100%;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .page-hero h1 {
                font-size: 1.5rem;
            }
            .page-hero p {
                font-size: 0.9rem;
            }
            .hero-badge {
                font-size: 0.8rem;
                padding: 4px 14px;
            }
            .section-title h2 {
                font-size: 1.3rem;
            }
            .section {
                padding: 40px 0;
            }
            .step-item {
                flex: 1 1 100%;
                max-width: 100%;
            }
            .media-block .media-img img {
                height: 140px;
            }
            .tip-card h3 {
                font-size: 1.05rem;
            }
            .cta-section h2 {
                font-size: 1.3rem;
            }
            .cta-btn {
                padding: 12px 24px;
                font-size: 0.95rem;
            }
        }

        /* ===== 辅助 ===== */
        .text-center {
            text-align: center;
        }
        .mt-1 {
            margin-top: 12px;
        }
        .mt-2 {
            margin-top: 24px;
        }
        .mb-1 {
            margin-bottom: 12px;
        }
        .mb-2 {
            margin-bottom: 24px;
        }
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border: 0;
        }

        /* Foundation 覆盖微调 */
        .grid-x {
            margin: 0;
        }
        .cell {
            padding: 0;
        }