/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1e40af;
            --primary-dark: #1e3a8a;
            --primary-light: #dbeafe;
            --primary-lighter: #eff6ff;
            --secondary: #f59e0b;
            --secondary-dark: #d97706;
            --secondary-light: #fef3c7;
            --accent: #0ea5e9;
            --bg: #ffffff;
            --bg-alt: #f8fafc;
            --bg-dark: #0f172a;
            --bg-card: #ffffff;
            --text: #1e293b;
            --text-secondary: #475569;
            --text-light: #94a3b8;
            --text-white: #ffffff;
            --border: #e2e8f0;
            --border-light: #f1f5f9;
            --radius-sm: 8px;
            --radius: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --radius-full: 9999px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
            --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
            --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.10);
            --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.12);
            --shadow-glow: 0 0 40px rgba(30, 64, 175, 0.15);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --max-width: 1200px;
            --nav-height: 72px;
        }

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

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

        body {
            font-family: var(--font);
            font-size: 16px;
            line-height: 1.6;
            color: var(--text);
            background: var(--bg);
            min-height: 100vh;
        }

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

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

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

        button {
            cursor: pointer;
        }

        ul,
        ol {
            list-style: none;
        }

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

        .container-narrow {
            max-width: 900px;
            margin: 0 auto;
            padding: 0 24px;
        }

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

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

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

        .section-title {
            font-size: 2.25rem;
            font-weight: 700;
            line-height: 1.25;
            text-align: center;
            margin-bottom: 16px;
            color: var(--text);
        }

        .section-dark .section-title {
            color: var(--text-white);
        }

        .section-subtitle {
            font-size: 1.1rem;
            color: var(--text-secondary);
            text-align: center;
            max-width: 640px;
            margin: 0 auto 48px;
            line-height: 1.7;
        }

        .section-dark .section-subtitle {
            color: var(--text-light);
        }

        .section-divider {
            width: 60px;
            height: 4px;
            background: var(--secondary);
            border-radius: var(--radius-full);
            margin: 0 auto 48px;
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed;
            top: 16px;
            left: 0;
            right: 0;
            z-index: 1000;
            display: flex;
            justify-content: center;
            padding: 0 24px;
            pointer-events: none;
        }

        .site-header .container {
            pointer-events: all;
            width: 100%;
        }

        .nav-wrap {
            display: flex;
            align-items: center;
            justify-content: space-between;
            background: rgba(255, 255, 255, 0.88);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-radius: var(--radius-xl);
            padding: 8px 24px 8px 28px;
            box-shadow: 0 4px 32px rgba(0, 0, 0, 0.08), 0 1px 4px rgba(0, 0, 0, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.6);
            height: var(--nav-height);
            transition: box-shadow var(--transition), border-color var(--transition);
        }

        .nav-wrap.scrolled {
            box-shadow: 0 8px 48px rgba(0, 0, 0, 0.12);
            border-color: var(--border);
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--primary);
            white-space: nowrap;
            letter-spacing: -0.3px;
        }

        .logo-icon {
            width: 38px;
            height: 38px;
            background: var(--primary);
            border-radius: var(--radius);
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 1.1rem;
            font-weight: 800;
            flex-shrink: 0;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .nav-links a {
            padding: 8px 18px;
            border-radius: var(--radius-full);
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition);
            position: relative;
        }

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

        .nav-links a.active {
            color: var(--text-white);
            background: var(--primary);
            box-shadow: 0 4px 12px rgba(30, 64, 175, 0.25);
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 22px;
            border-radius: var(--radius-full);
            background: var(--secondary);
            color: var(--text-white);
            font-weight: 600;
            font-size: 0.9rem;
            transition: all var(--transition);
            box-shadow: 0 4px 14px rgba(245, 158, 11, 0.3);
            margin-left: 12px;
        }

        .nav-cta:hover {
            background: var(--secondary-dark);
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(245, 158, 11, 0.4);
        }

        .nav-cta i {
            font-size: 0.8rem;
        }

        /* Mobile menu toggle */
        .menu-toggle {
            display: none;
            width: 44px;
            height: 44px;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius);
            background: var(--bg-alt);
            color: var(--text);
            font-size: 1.3rem;
            cursor: pointer;
            transition: background var(--transition);
        }

        .menu-toggle:hover {
            background: var(--border);
        }

        /* ===== Hero ===== */
        .hero {
            padding: 140px 0 80px;
            background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 50%, #eef2ff 100%);
            position: relative;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: -40%;
            right: -20%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(30, 64, 175, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero::after {
            content: '';
            position: absolute;
            bottom: -30%;
            left: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(245, 158, 11, 0.06) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

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

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

        .hero-content {
            max-width: 580px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 16px;
            border-radius: var(--radius-full);
            background: rgba(30, 64, 175, 0.1);
            color: var(--primary);
            font-size: 0.85rem;
            font-weight: 500;
            margin-bottom: 20px;
            border: 1px solid rgba(30, 64, 175, 0.15);
        }

        .hero-badge i {
            font-size: 0.75rem;
        }

        .hero h1 {
            font-size: 3.2rem;
            font-weight: 800;
            line-height: 1.15;
            color: var(--text);
            margin-bottom: 20px;
            letter-spacing: -0.5px;
        }

        .hero h1 .highlight {
            color: var(--primary);
            position: relative;
        }

        .hero h1 .highlight::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 0;
            right: 0;
            height: 6px;
            background: var(--secondary);
            opacity: 0.3;
            border-radius: var(--radius-full);
        }

        .hero-desc {
            font-size: 1.15rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 32px;
            max-width: 480px;
        }

        .hero-actions {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 32px;
            border-radius: var(--radius-full);
            font-weight: 600;
            font-size: 1rem;
            transition: all var(--transition);
            border: none;
            cursor: pointer;
        }

        .btn-primary {
            background: var(--primary);
            color: var(--text-white);
            box-shadow: 0 4px 20px rgba(30, 64, 175, 0.3);
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 32px rgba(30, 64, 175, 0.4);
        }

        .btn-secondary {
            background: var(--text-white);
            color: var(--text);
            border: 1.5px solid var(--border);
            box-shadow: var(--shadow-sm);
        }

        .btn-secondary:hover {
            border-color: var(--primary);
            color: var(--primary);
            transform: translateY(-2px);
            box-shadow: var(--shadow);
        }

        .btn-lg {
            padding: 16px 40px;
            font-size: 1.05rem;
        }

        .btn-sm {
            padding: 10px 20px;
            font-size: 0.85rem;
        }

        .hero-stats {
            display: flex;
            gap: 32px;
            margin-top: 40px;
            padding-top: 28px;
            border-top: 1px solid var(--border);
        }

        .hero-stat {
            text-align: left;
        }

        .hero-stat-number {
            font-size: 1.75rem;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
        }

        .hero-stat-label {
            font-size: 0.85rem;
            color: var(--text-light);
            margin-top: 4px;
        }

        .hero-visual {
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
        }

        .hero-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 40px 36px;
            box-shadow: var(--shadow-lg);
            border: 1px solid var(--border-light);
            width: 100%;
            max-width: 440px;
            position: relative;
        }

        .hero-card-icon {
            width: 56px;
            height: 56px;
            background: var(--primary-lighter);
            border-radius: var(--radius);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 1.6rem;
            margin-bottom: 20px;
        }

        .hero-card h3 {
            font-size: 1.2rem;
            font-weight: 600;
            margin-bottom: 8px;
        }

        .hero-card p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.6;
            margin-bottom: 20px;
        }

        .hero-card-tags {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
        }

        .tag {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 4px 14px;
            border-radius: var(--radius-full);
            font-size: 0.8rem;
            font-weight: 500;
            background: var(--bg-alt);
            color: var(--text-secondary);
            border: 1px solid var(--border);
            transition: all var(--transition);
        }

        .tag:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-lighter);
        }

        .tag-primary {
            background: var(--primary-light);
            color: var(--primary);
            border-color: transparent;
        }

        .tag-secondary {
            background: var(--secondary-light);
            color: var(--secondary-dark);
            border-color: transparent;
        }

        /* ===== Category Cards ===== */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .category-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 36px 28px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .category-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: var(--primary);
            opacity: 0;
            transition: opacity var(--transition);
        }

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

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

        .category-icon {
            width: 56px;
            height: 56px;
            background: var(--primary-lighter);
            border-radius: var(--radius);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
            color: var(--primary);
            font-size: 1.5rem;
            transition: all var(--transition);
        }

        .category-card:hover .category-icon {
            background: var(--primary);
            color: var(--text-white);
            transform: scale(1.05);
        }

        .category-card h3 {
            font-size: 1.2rem;
            font-weight: 600;
            margin-bottom: 10px;
            color: var(--text);
        }

        .category-card p {
            color: var(--text-secondary);
            font-size: 0.92rem;
            line-height: 1.6;
            margin-bottom: 20px;
        }

        .category-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--primary);
            font-weight: 500;
            font-size: 0.9rem;
            transition: gap var(--transition);
        }

        .category-link i {
            font-size: 0.75rem;
            transition: transform var(--transition);
        }

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

        .category-card:hover .category-link i {
            transform: translateX(2px);
        }

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

        .feature-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 28px 22px;
            text-align: center;
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }

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

        .feature-icon {
            width: 48px;
            height: 48px;
            border-radius: var(--radius);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            font-size: 1.3rem;
        }

        .feature-icon.blue {
            background: var(--primary-lighter);
            color: var(--primary);
        }
        .feature-icon.gold {
            background: var(--secondary-light);
            color: var(--secondary-dark);
        }
        .feature-icon.teal {
            background: #ccfbf1;
            color: #0f766e;
        }
        .feature-icon.rose {
            background: #ffe4e6;
            color: #be123c;
        }

        .feature-card h4 {
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: 8px;
        }

        .feature-card p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.55;
        }

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

        .steps-grid::before {
            content: '';
            position: absolute;
            top: 48px;
            left: 10%;
            right: 10%;
            height: 2px;
            background: var(--border);
            z-index: 0;
        }

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

        .step-number {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
            font-size: 1.3rem;
            font-weight: 700;
            border: 3px solid var(--bg);
            box-shadow: 0 0 0 2px var(--primary);
            transition: all var(--transition);
        }

        .step-item:hover .step-number {
            background: var(--primary);
            color: var(--text-white);
            transform: scale(1.08);
        }

        .step-item h4 {
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: 6px;
        }

        .step-item p {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.5;
        }

        /* ===== Latest Posts (CMS) ===== */
        .posts-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .post-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }

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

        .post-card .post-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.8rem;
            color: var(--text-light);
            margin-bottom: 12px;
        }

        .post-card .post-category {
            display: inline-block;
            padding: 2px 12px;
            border-radius: var(--radius-full);
            background: var(--primary-lighter);
            color: var(--primary);
            font-weight: 500;
            font-size: 0.75rem;
        }

        .post-card .post-date {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .post-card .post-date i {
            font-size: 0.7rem;
        }

        .post-card h3 {
            font-size: 1.1rem;
            font-weight: 600;
            line-height: 1.4;
            margin-bottom: 10px;
            color: var(--text);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .post-card p {
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.6;
            flex-grow: 1;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 16px;
        }

        .post-card .post-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--primary);
            font-weight: 500;
            font-size: 0.88rem;
            align-self: flex-start;
        }

        .post-card .post-link i {
            font-size: 0.7rem;
            transition: transform var(--transition);
        }

        .post-card:hover .post-link i {
            transform: translateX(4px);
        }

        .posts-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: 40px 20px;
            color: var(--text-light);
            background: var(--bg-alt);
            border-radius: var(--radius);
            border: 1px dashed var(--border);
        }

        .posts-empty i {
            font-size: 2rem;
            margin-bottom: 12px;
            display: block;
            color: var(--border);
        }

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

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

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

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 24px;
            font-size: 1rem;
            font-weight: 500;
            color: var(--text);
            background: none;
            border: none;
            cursor: pointer;
            text-align: left;
            transition: background var(--transition);
            gap: 16px;
        }

        .faq-question:hover {
            background: var(--bg-alt);
        }

        .faq-question i {
            font-size: 0.85rem;
            color: var(--text-light);
            transition: transform var(--transition);
            flex-shrink: 0;
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 24px;
        }

        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }

        .faq-answer p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 80px 0;
            text-align: center;
        }

        .cta-box {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            border-radius: var(--radius-lg);
            padding: 60px 40px;
            position: relative;
            overflow: hidden;
        }

        .cta-box::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(255, 255, 255, 0.08) 0%, transparent 70%);
            border-radius: 50%;
        }

        .cta-box::after {
            content: '';
            position: absolute;
            bottom: -30%;
            left: -10%;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(245, 158, 11, 0.1) 0%, transparent 70%);
            border-radius: 50%;
        }

        .cta-box * {
            position: relative;
            z-index: 1;
        }

        .cta-box h2 {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 16px;
        }

        .cta-box p {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 540px;
            margin: 0 auto 28px;
            line-height: 1.7;
        }

        .cta-box .btn {
            background: var(--text-white);
            color: var(--primary);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
        }

        .cta-box .btn:hover {
            background: var(--secondary);
            color: var(--text-white);
            transform: translateY(-2px);
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: var(--text-white);
            padding: 56px 0 32px;
        }

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

        .footer-brand .logo {
            color: var(--text-white);
            margin-bottom: 14px;
        }

        .footer-brand .logo .logo-icon {
            background: var(--secondary);
        }

        .footer-brand p {
            color: var(--text-light);
            font-size: 0.92rem;
            line-height: 1.7;
            max-width: 300px;
        }

        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 16px;
            color: var(--text-white);
        }

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

        .footer-col ul li a {
            color: var(--text-light);
            font-size: 0.9rem;
            transition: color var(--transition);
        }

        .footer-col ul li a:hover {
            color: var(--secondary);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
        }

        .footer-bottom p {
            color: var(--text-light);
            font-size: 0.85rem;
        }

        .footer-bottom a {
            color: var(--text-light);
        }

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

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

        .footer-social a {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-light);
            font-size: 0.95rem;
            transition: all var(--transition);
        }

        .footer-social a:hover {
            background: var(--secondary);
            color: var(--text-white);
            transform: translateY(-2px);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }

            .hero-content {
                max-width: 100%;
                text-align: center;
            }

            .hero-desc {
                max-width: 100%;
                margin-left: auto;
                margin-right: auto;
            }

            .hero-actions {
                justify-content: center;
            }

            .hero-stats {
                justify-content: center;
            }

            .hero-visual {
                order: -1;
            }

            .hero-card {
                max-width: 100%;
            }

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

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

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

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

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

        @media (max-width: 768px) {
            .site-header {
                top: 12px;
                padding: 0 16px;
            }

            .nav-wrap {
                padding: 6px 16px 6px 20px;
                border-radius: var(--radius-lg);
                height: 62px;
            }

            .logo {
                font-size: 1.05rem;
            }

            .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 0.9rem;
            }

            .nav-links {
                display: none;
                position: absolute;
                top: calc(100% + 8px);
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(20px);
                border-radius: var(--radius-lg);
                padding: 12px;
                box-shadow: var(--shadow-lg);
                flex-direction: column;
                gap: 2px;
                border: 1px solid var(--border);
            }

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

            .nav-links a {
                padding: 12px 16px;
                width: 100%;
                text-align: center;
                border-radius: var(--radius);
            }

            .nav-cta {
                margin-left: auto;
                padding: 6px 16px;
                font-size: 0.82rem;
            }

            .nav-cta span {
                display: none;
            }

            .menu-toggle {
                display: flex;
                margin-left: 8px;
            }

            .hero {
                padding: 120px 0 60px;
            }

            .hero h1 {
                font-size: 2.2rem;
            }

            .hero-desc {
                font-size: 1rem;
            }

            .hero-stats {
                gap: 20px;
                flex-wrap: wrap;
            }

            .hero-stat-number {
                font-size: 1.4rem;
            }

            .section {
                padding: 56px 0;
            }

            .section-title {
                font-size: 1.7rem;
            }

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

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

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

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

            .cta-box {
                padding: 40px 24px;
            }

            .cta-box h2 {
                font-size: 1.5rem;
            }

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

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }

            .btn-lg {
                padding: 14px 28px;
                font-size: 0.95rem;
            }
        }

        @media (max-width: 520px) {
            .hero h1 {
                font-size: 1.7rem;
            }

            .hero-actions {
                flex-direction: column;
                width: 100%;
            }

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

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

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

            .section-title {
                font-size: 1.4rem;
            }

            .section-subtitle {
                font-size: 0.95rem;
            }

            .container {
                padding: 0 16px;
            }

            .nav-wrap {
                padding: 6px 12px 6px 16px;
            }
        }

        /* ===== Scrollbar ===== */
        ::-webkit-scrollbar {
            width: 8px;
        }

        ::-webkit-scrollbar-track {
            background: var(--bg-alt);
        }

        ::-webkit-scrollbar-thumb {
            background: var(--border);
            border-radius: var(--radius-full);
        }

        ::-webkit-scrollbar-thumb:hover {
            background: var(--text-light);
        }

        /* ===== Selection ===== */
        ::selection {
            background: var(--primary);
            color: var(--text-white);
        }

        /* ===== Back to top ===== */
        .back-to-top {
            position: fixed;
            bottom: 32px;
            right: 32px;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary);
            color: var(--text-white);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            box-shadow: var(--shadow-md);
            z-index: 999;
            opacity: 0;
            transform: translateY(20px);
            transition: all var(--transition);
            pointer-events: none;
            border: none;
            cursor: pointer;
        }

        .back-to-top.visible {
            opacity: 1;
            transform: translateY(0);
            pointer-events: all;
        }

        .back-to-top:hover {
            background: var(--primary-dark);
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a5cff;
            --primary-light: #e8eeff;
            --primary-dark: #0a3ca6;
            --secondary: #ff6b35;
            --secondary-light: #fff0e8;
            --accent: #00c9a7;
            --accent-light: #e0faf4;
            --bg: #ffffff;
            --bg-alt: #f6f8fc;
            --bg-card: #ffffff;
            --bg-dark: #0f1724;
            --text: #1a1a2e;
            --text-light: #5a6a7e;
            --text-lighter: #8a9aaa;
            --border: #e2e8f0;
            --border-light: #f0f2f5;
            --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);
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --max-width: 1200px;
            --nav-height: 70px;
        }

        /* ===== 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);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
        }

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

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

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

        button {
            cursor: pointer;
        }

        ul,
        ol {
            list-style: none;
        }

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

        /* ===== Header & Navigation ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--nav-height);
            background: rgba(255, 255, 255, 0.88);
            backdrop-filter: blur(16px) saturate(1.4);
            -webkit-backdrop-filter: blur(16px) saturate(1.4);
            border-bottom: 1px solid var(--border-light);
            transition: background var(--transition), box-shadow var(--transition);
        }

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

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 700;
            color: var(--text);
            letter-spacing: -0.3px;
        }

        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-sm);
            font-size: 20px;
            font-weight: 700;
        }

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

        .nav-links a {
            padding: 8px 18px;
            border-radius: 100px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-light);
            transition: all var(--transition);
            position: relative;
        }

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

        .nav-links a.active {
            color: #fff;
            background: var(--primary);
            box-shadow: 0 4px 12px rgba(26, 92, 255, 0.30);
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .nav-search {
            display: flex;
            align-items: center;
            background: var(--bg-alt);
            border-radius: 100px;
            padding: 0 16px;
            height: 40px;
            border: 1px solid var(--border-light);
            transition: border-color var(--transition), box-shadow var(--transition);
            width: 200px;
        }

        .nav-search:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(26, 92, 255, 0.12);
        }

        .nav-search input {
            flex: 1;
            background: none;
            padding: 0 8px;
            font-size: 14px;
            color: var(--text);
            height: 100%;
        }

        .nav-search input::placeholder {
            color: var(--text-lighter);
        }

        .nav-search button {
            color: var(--text-lighter);
            font-size: 15px;
            transition: color var(--transition);
        }

        .nav-search button:hover {
            color: var(--primary);
        }

        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 6px;
            border-radius: var(--radius-sm);
            background: none;
            cursor: pointer;
        }

        .menu-toggle span {
            display: block;
            width: 24px;
            height: 2.5px;
            background: var(--text);
            border-radius: 4px;
            transition: all var(--transition);
        }

        /* ===== Hero ===== */
        .help-hero {
            padding: 120px 0 70px;
            background: linear-gradient(135deg, var(--bg-alt) 0%, #eef3ff 100%);
            position: relative;
            overflow: hidden;
        }

        .help-hero::before {
            content: '';
            position: absolute;
            top: -30%;
            right: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(26, 92, 255, 0.06) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .help-hero::after {
            content: '';
            position: absolute;
            bottom: -20%;
            left: -5%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(255, 107, 53, 0.05) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .help-hero .container {
            position: relative;
            z-index: 1;
            text-align: center;
        }

        .help-hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(26, 92, 255, 0.10);
            color: var(--primary);
            padding: 6px 18px;
            border-radius: 100px;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 20px;
        }

        .help-hero h1 {
            font-size: 44px;
            font-weight: 800;
            letter-spacing: -1px;
            color: var(--text);
            margin-bottom: 16px;
            line-height: 1.2;
        }

        .help-hero h1 span {
            color: var(--primary);
        }

        .help-hero p {
            font-size: 18px;
            color: var(--text-light);
            max-width: 640px;
            margin: 0 auto 32px;
        }

        .help-hero-search {
            display: flex;
            align-items: center;
            max-width: 560px;
            margin: 0 auto;
            background: #fff;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
            padding: 4px;
            border: 1px solid var(--border);
        }

        .help-hero-search input {
            flex: 1;
            padding: 14px 20px;
            font-size: 16px;
            color: var(--text);
            border-radius: var(--radius-md) 0 0 var(--radius-md);
            background: none;
        }

        .help-hero-search input::placeholder {
            color: var(--text-lighter);
        }

        .help-hero-search button {
            background: var(--primary);
            color: #fff;
            padding: 14px 32px;
            border-radius: var(--radius-md);
            font-size: 15px;
            font-weight: 600;
            transition: background var(--transition), transform var(--transition);
            white-space: nowrap;
        }

        .help-hero-search button:hover {
            background: var(--primary-dark);
            transform: scale(1.02);
        }

        .help-hero-tags {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 24px;
        }

        .help-hero-tags a {
            display: inline-block;
            padding: 6px 16px;
            background: rgba(255, 255, 255, 0.7);
            backdrop-filter: blur(4px);
            border: 1px solid var(--border);
            border-radius: 100px;
            font-size: 13px;
            color: var(--text-light);
            transition: all var(--transition);
        }

        .help-hero-tags a:hover {
            background: var(--primary-light);
            color: var(--primary);
            border-color: var(--primary);
        }

        /* ===== 快捷入口 ===== */
        .quick-entry {
            padding: 60px 0;
            background: var(--bg);
        }

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

        .quick-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 28px 20px;
            text-align: center;
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            cursor: pointer;
        }

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

        .quick-card .icon {
            width: 56px;
            height: 56px;
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            font-size: 24px;
            color: #fff;
        }

        .quick-card .icon.blue {
            background: var(--primary);
        }
        .quick-card .icon.orange {
            background: var(--secondary);
        }
        .quick-card .icon.green {
            background: var(--accent);
        }
        .quick-card .icon.purple {
            background: #7c5cbf;
        }

        .quick-card h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 6px;
        }

        .quick-card p {
            font-size: 14px;
            color: var(--text-light);
        }

        /* ===== 常见问题 ===== */
        .help-faq {
            padding: 70px 0;
            background: var(--bg-alt);
        }

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(26, 92, 255, 0.08);
            color: var(--primary);
            padding: 4px 14px;
            border-radius: 100px;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 12px;
        }

        .section-title {
            font-size: 34px;
            font-weight: 800;
            letter-spacing: -0.5px;
            margin-bottom: 12px;
            color: var(--text);
        }

        .section-sub {
            font-size: 17px;
            color: var(--text-light);
            max-width: 600px;
            margin-bottom: 40px;
        }

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

        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 24px 28px;
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            cursor: pointer;
        }

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

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
        }

        .faq-question .arrow {
            font-size: 14px;
            color: var(--text-lighter);
            transition: transform var(--transition);
            flex-shrink: 0;
        }

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

        .faq-answer {
            margin-top: 14px;
            font-size: 15px;
            color: var(--text-light);
            line-height: 1.8;
            display: none;
            border-top: 1px solid var(--border-light);
            padding-top: 14px;
        }

        .faq-item.active .faq-answer {
            display: block;
        }

        /* ===== 分类帮助 ===== */
        .help-categories {
            padding: 70px 0;
            background: var(--bg);
        }

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

        .cat-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 32px 28px;
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }

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

        .cat-card .cat-icon {
            width: 48px;
            height: 48px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: #fff;
            margin-bottom: 18px;
        }

        .cat-card h3 {
            font-size: 19px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .cat-card p {
            font-size: 15px;
            color: var(--text-light);
            margin-bottom: 16px;
            line-height: 1.7;
        }

        .cat-card .art-list {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .cat-card .art-list a {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-light);
            transition: color var(--transition);
        }

        .cat-card .art-list a:hover {
            color: var(--primary);
        }

        .cat-card .art-list a i {
            font-size: 12px;
            color: var(--text-lighter);
        }

        /* ===== 热门文章 ===== */
        .hot-articles {
            padding: 70px 0;
            background: var(--bg-alt);
        }

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

        .hot-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }

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

        .hot-card .hot-img {
            height: 180px;
            background: linear-gradient(135deg, var(--primary-light), #dce5ff);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 40px;
            color: var(--primary);
        }

        .hot-card .hot-body {
            padding: 22px 24px 24px;
        }

        .hot-card .hot-tag {
            display: inline-block;
            padding: 3px 12px;
            border-radius: 100px;
            font-size: 12px;
            font-weight: 600;
            background: var(--primary-light);
            color: var(--primary);
            margin-bottom: 10px;
        }

        .hot-card h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .hot-card p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.7;
            margin-bottom: 14px;
        }

        .hot-card .hot-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 13px;
            color: var(--text-lighter);
        }

        .hot-card .hot-meta i {
            margin-right: 4px;
        }

        /* ===== 联系方式 ===== */
        .help-contact {
            padding: 70px 0;
            background: var(--bg);
        }

        .contact-wrap {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
            background: var(--bg-alt);
            border-radius: var(--radius-lg);
            padding: 48px 52px;
            border: 1px solid var(--border-light);
        }

        .contact-info h2 {
            font-size: 30px;
            font-weight: 800;
            margin-bottom: 12px;
        }

        .contact-info p {
            font-size: 16px;
            color: var(--text-light);
            margin-bottom: 24px;
        }

        .contact-methods {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .contact-method {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 14px 18px;
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }

        .contact-method:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow-sm);
        }

        .contact-method .cm-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: #fff;
            flex-shrink: 0;
        }

        .contact-method .cm-text {
            font-size: 15px;
            font-weight: 600;
        }

        .contact-method .cm-desc {
            font-size: 13px;
            color: var(--text-lighter);
            margin-top: 2px;
        }

        .contact-form {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 32px 30px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
        }

        .contact-form h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 18px;
        }

        .contact-form .form-group {
            margin-bottom: 16px;
        }

        .contact-form label {
            display: block;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 6px;
            color: var(--text);
        }

        .contact-form input,
        .contact-form textarea,
        .contact-form select {
            width: 100%;
            padding: 11px 16px;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            font-size: 15px;
            color: var(--text);
            background: var(--bg);
            transition: border-color var(--transition), box-shadow var(--transition);
        }

        .contact-form input:focus,
        .contact-form textarea:focus,
        .contact-form select:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(26, 92, 255, 0.10);
        }

        .contact-form textarea {
            min-height: 100px;
            resize: vertical;
        }

        .contact-form .btn-submit {
            width: 100%;
            padding: 13px;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-sm);
            font-size: 16px;
            font-weight: 600;
            transition: background var(--transition), transform var(--transition);
        }

        .contact-form .btn-submit:hover {
            background: var(--primary-dark);
            transform: translateY(-1px);
        }

        /* ===== CTA ===== */
        .help-cta {
            padding: 60px 0;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            text-align: center;
            color: #fff;
        }

        .help-cta h2 {
            font-size: 32px;
            font-weight: 800;
            margin-bottom: 12px;
        }

        .help-cta p {
            font-size: 17px;
            opacity: 0.85;
            max-width: 560px;
            margin: 0 auto 28px;
        }

        .help-cta .btn-group {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        .help-cta .btn-white {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            background: #fff;
            color: var(--primary);
            border-radius: var(--radius-sm);
            font-size: 16px;
            font-weight: 600;
            transition: all var(--transition);
        }

        .help-cta .btn-white:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.20);
        }

        .help-cta .btn-outline-white {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            border: 2px solid rgba(255, 255, 255, 0.50);
            color: #fff;
            border-radius: var(--radius-sm);
            font-size: 16px;
            font-weight: 600;
            transition: all var(--transition);
        }

        .help-cta .btn-outline-white:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: #fff;
            transform: translateY(-2px);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.80);
            padding: 60px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .footer-brand .logo {
            color: #fff;
            margin-bottom: 14px;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.55);
            max-width: 320px;
        }

        .footer-col h4 {
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 18px;
        }

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

        .footer-col ul li a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.55);
            transition: color var(--transition);
        }

        .footer-col ul li a:hover {
            color: #fff;
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 24px 0;
            flex-wrap: wrap;
            gap: 12px;
        }

        .footer-bottom p {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.40);
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.50);
            transition: color var(--transition);
        }

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

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

        .footer-social a {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 17px;
            color: rgba(255, 255, 255, 0.50);
            transition: all var(--transition);
        }

        .footer-social a:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }

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

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

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

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

        @media (max-width: 820px) {
            .help-hero h1 {
                font-size: 34px;
            }

            .contact-wrap {
                grid-template-columns: 1fr;
                padding: 32px 24px;
            }

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

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: absolute;
                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 24px;
                border-bottom: 1px solid var(--border-light);
                box-shadow: var(--shadow-md);
                gap: 4px;
            }

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

            .nav-links a {
                padding: 12px 16px;
                border-radius: var(--radius-sm);
                width: 100%;
            }

            .nav-links a.active {
                border-radius: var(--radius-sm);
            }

            .menu-toggle {
                display: flex;
            }

            .nav-search {
                width: 160px;
            }

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

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

            .section-title {
                font-size: 26px;
            }

            .quick-entry .container {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }

            .quick-card {
                padding: 20px 14px;
            }

            .quick-card .icon {
                width: 44px;
                height: 44px;
                font-size: 20px;
            }

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

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

            .contact-form {
                padding: 24px 18px;
            }

            .help-cta h2 {
                font-size: 24px;
            }

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

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

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

            .help-hero {
                padding: 100px 0 50px;
            }

            .help-hero h1 {
                font-size: 24px;
            }

            .help-hero-search {
                flex-direction: column;
                background: none;
                box-shadow: none;
                border: none;
                gap: 10px;
            }

            .help-hero-search input {
                width: 100%;
                background: #fff;
                border-radius: var(--radius-sm);
                border: 1px solid var(--border);
                padding: 12px 16px;
            }

            .help-hero-search button {
                width: 100%;
                border-radius: var(--radius-sm);
            }

            .quick-entry .container {
                grid-template-columns: 1fr 1fr;
            }

            .nav-search {
                width: 120px;
            }

            .nav-search input {
                width: 80px;
            }

            .contact-wrap {
                padding: 20px 14px;
            }

            .help-cta .btn-white,
            .help-cta .btn-outline-white {
                width: 100%;
                justify-content: center;
            }
        }

        /* ===== 面包屑 ===== */
        .breadcrumb {
            padding: 16px 0;
            background: var(--bg-alt);
            border-bottom: 1px solid var(--border-light);
            font-size: 14px;
            color: var(--text-lighter);
        }

        .breadcrumb .container {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: var(--text-light);
            transition: color var(--transition);
        }

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

        .breadcrumb span {
            color: var(--text);
            font-weight: 500;
        }

        .breadcrumb .sep {
            color: var(--text-lighter);
            font-size: 12px;
        }

        /* ===== 统计 ===== */
        .help-stats {
            padding: 50px 0;
            background: var(--bg);
        }

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

        .stat-item .stat-number {
            font-size: 38px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.1;
        }

        .stat-item .stat-label {
            font-size: 15px;
            color: var(--text-light);
            margin-top: 6px;
        }

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

            .stat-item .stat-number {
                font-size: 30px;
            }
        }

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

/* roulang page: article */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1e3a5f;
            --primary-light: #2a5298;
            --primary-dark: #0f2340;
            --secondary: #d4a24e;
            --secondary-light: #e8bc6e;
            --secondary-dark: #b88a30;
            --accent: #2563eb;
            --accent-light: #3b82f6;
            --bg: #f8fafc;
            --bg-card: #ffffff;
            --bg-dark: #0f172a;
            --text: #1e293b;
            --text-weak: #64748b;
            --text-inverse: #ffffff;
            --border: #e2e8f0;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
            --shadow-md: 0 4px 14px rgba(0,0,0,0.08);
            --shadow-lg: 0 10px 40px rgba(0,0,0,0.10);
            --shadow-xl: 0 20px 60px rgba(0,0,0,0.14);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            --max-width: 1160px;
            --nav-height: 72px;
        }

        /* ===== 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: 1.7;
            color: var(--text);
            background: var(--bg);
            padding-top: var(--nav-height);
        }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
        a { color: var(--accent); text-decoration: none; transition: color var(--transition); }
        a:hover { color: var(--primary-light); }
        a:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 2px; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: var(--primary); }
        h1 { font-size: clamp(1.8rem, 4vw, 2.6rem); }
        h2 { font-size: clamp(1.4rem, 3vw, 2.0rem); margin-bottom: 0.5em; }
        h3 { font-size: clamp(1.1rem, 2vw, 1.4rem); }
        p { margin-bottom: 1em; color: var(--text); }
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .section { padding: 80px 0; }
        .section-title {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-title h2 {
            position: relative;
            display: inline-block;
        }
        .section-title h2::after {
            content: '';
            display: block;
            width: 48px;
            height: 4px;
            background: var(--secondary);
            border-radius: 4px;
            margin: 12px auto 0;
        }
        .section-title p {
            color: var(--text-weak);
            max-width: 640px;
            margin: 12px auto 0;
            font-size: 1.05rem;
        }

        /* ===== 导航 ===== */
        .site-header {
            position: fixed;
            top: 18px;
            left: 50%;
            transform: translateX(-50%);
            width: calc(100% - 40px);
            max-width: var(--max-width);
            background: rgba(255,255,255,0.88);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-radius: var(--radius-xl);
            box-shadow: var(--shadow-md);
            z-index: 1000;
            padding: 0 28px;
            height: var(--nav-height);
            display: flex;
            align-items: center;
            justify-content: space-between;
            transition: box-shadow var(--transition), background var(--transition);
            border: 1px solid rgba(255,255,255,0.5);
        }
        .site-header.scrolled {
            background: rgba(255,255,255,0.96);
            box-shadow: var(--shadow-lg);
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.25rem;
            font-weight: 800;
            color: var(--primary);
            text-decoration: none;
            letter-spacing: -0.3px;
            white-space: nowrap;
        }
        .logo:hover { color: var(--primary); opacity: 0.9; }
        .logo-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            color: var(--text-inverse);
            border-radius: var(--radius-md);
            font-size: 1.3rem;
            font-weight: 800;
            flex-shrink: 0;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-links a {
            padding: 8px 18px;
            border-radius: 40px;
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text);
            transition: all var(--transition);
            position: relative;
            white-space: nowrap;
        }
        .nav-links a:hover {
            background: rgba(30, 58, 95, 0.08);
            color: var(--primary);
        }
        .nav-links a.active {
            background: var(--primary);
            color: var(--text-inverse);
            box-shadow: 0 4px 12px rgba(30,58,95,0.25);
        }
        .nav-links a.active:hover {
            background: var(--primary-light);
            color: var(--text-inverse);
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            padding: 6px;
            border: none;
            background: none;
            border-radius: 8px;
            transition: background var(--transition);
        }
        .nav-toggle:hover { background: rgba(30,58,95,0.06); }
        .nav-toggle span {
            display: block;
            width: 24px;
            height: 2.5px;
            background: var(--primary);
            border-radius: 4px;
            transition: all 0.3s ease;
        }
        .nav-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
        .nav-toggle.active span:nth-child(2) { opacity: 0; }
        .nav-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

        /* ===== 面包屑 ===== */
        .breadcrumb {
            padding: 24px 0 8px;
            font-size: 0.9rem;
            color: var(--text-weak);
        }
        .breadcrumb a { color: var(--text-weak); }
        .breadcrumb a:hover { color: var(--accent); }
        .breadcrumb span { color: var(--text-weak); margin: 0 6px; }
        .breadcrumb .current { color: var(--primary); font-weight: 500; }

        /* ===== 文章内容区 ===== */
        .article-wrap {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 48px 52px;
            margin: 16px 0 40px;
            border: 1px solid var(--border);
        }
        .article-header {
            margin-bottom: 36px;
            padding-bottom: 28px;
            border-bottom: 1px solid var(--border);
        }
        .article-header h1 {
            font-size: clamp(1.6rem, 3.5vw, 2.4rem);
            line-height: 1.3;
            margin-bottom: 16px;
            color: var(--primary);
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 20px;
            font-size: 0.92rem;
            color: var(--text-weak);
        }
        .article-meta .meta-item {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .article-meta .meta-item i { font-size: 0.85rem; }
        .article-meta .category-badge {
            display: inline-block;
            padding: 3px 14px;
            background: rgba(212, 162, 78, 0.15);
            color: var(--secondary-dark);
            border-radius: 40px;
            font-size: 0.82rem;
            font-weight: 600;
        }
        .article-body {
            font-size: 1.05rem;
            line-height: 1.85;
            color: var(--text);
        }
        .article-body p { margin-bottom: 1.2em; }
        .article-body h2, .article-body h3, .article-body h4 {
            margin-top: 1.6em;
            margin-bottom: 0.6em;
            color: var(--primary);
        }
        .article-body ul, .article-body ol {
            margin-bottom: 1.2em;
            padding-left: 1.5em;
        }
        .article-body ul { list-style: disc; }
        .article-body ol { list-style: decimal; }
        .article-body li { margin-bottom: 0.4em; }
        .article-body blockquote {
            border-left: 4px solid var(--secondary);
            padding: 16px 24px;
            background: rgba(212, 162, 78, 0.06);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            margin: 1.5em 0;
            color: var(--text-weak);
            font-style: italic;
        }
        .article-body code {
            background: #f1f5f9;
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 0.9em;
            color: var(--primary-dark);
        }
        .article-body pre {
            background: #1e293b;
            color: #e2e8f0;
            padding: 20px 24px;
            border-radius: var(--radius-md);
            overflow-x: auto;
            margin: 1.5em 0;
            font-size: 0.9rem;
            line-height: 1.6;
        }
        .article-body pre code { background: none; color: inherit; padding: 0; }
        .article-body img {
            border-radius: var(--radius-md);
            margin: 1.5em auto;
            box-shadow: var(--shadow-sm);
        }
        .article-body a { color: var(--accent); text-decoration: underline; text-underline-offset: 2px; }
        .article-body a:hover { color: var(--primary-light); }

        /* ===== 文章标签 ===== */
        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 36px;
            padding-top: 24px;
            border-top: 1px solid var(--border);
        }
        .article-tags .tag {
            display: inline-block;
            padding: 5px 16px;
            background: #f1f5f9;
            border-radius: 40px;
            font-size: 0.85rem;
            color: var(--text-weak);
            transition: all var(--transition);
            border: 1px solid transparent;
        }
        .article-tags .tag:hover {
            background: var(--bg-card);
            border-color: var(--primary);
            color: var(--primary);
        }

        /* ===== 内容未找到 ===== */
        .not-found-box {
            text-align: center;
            padding: 80px 24px;
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
        }
        .not-found-box .nf-icon {
            font-size: 4rem;
            color: var(--text-weak);
            opacity: 0.4;
            margin-bottom: 20px;
        }
        .not-found-box h2 { color: var(--primary); margin-bottom: 12px; }
        .not-found-box p { color: var(--text-weak); max-width: 440px; margin: 0 auto 24px; }
        .not-found-box .btn-back {
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 40px;
            font-size: 0.95rem;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            text-decoration: none;
            font-family: var(--font-sans);
            line-height: 1.4;
        }
        .btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
        .btn-primary {
            background: var(--primary);
            color: var(--text-inverse);
            box-shadow: 0 4px 14px rgba(30,58,95,0.25);
        }
        .btn-primary:hover {
            background: var(--primary-light);
            color: var(--text-inverse);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(30,58,95,0.3);
        }
        .btn-primary:active { transform: translateY(0); box-shadow: 0 2px 8px rgba(30,58,95,0.2); }
        .btn-secondary {
            background: var(--secondary);
            color: var(--text-inverse);
            box-shadow: 0 4px 14px rgba(212,162,78,0.3);
        }
        .btn-secondary:hover {
            background: var(--secondary-light);
            color: var(--text-inverse);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(212,162,78,0.35);
        }
        .btn-outline {
            background: transparent;
            color: var(--primary);
            border: 2px solid var(--primary);
        }
        .btn-outline:hover {
            background: var(--primary);
            color: var(--text-inverse);
            transform: translateY(-2px);
        }
        .btn-ghost {
            background: transparent;
            color: var(--text-weak);
            border: 1px solid var(--border);
        }
        .btn-ghost:hover {
            background: #f1f5f9;
            color: var(--primary);
            border-color: var(--primary);
        }

        /* ===== 相关推荐 ===== */
        .related-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
            gap: 24px;
            margin-top: 12px;
        }
        .related-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 24px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }
        .related-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: var(--primary);
        }
        .related-card .rc-category {
            font-size: 0.78rem;
            font-weight: 600;
            color: var(--secondary-dark);
            text-transform: uppercase;
            letter-spacing: 0.5px;
            margin-bottom: 8px;
        }
        .related-card h3 {
            font-size: 1.05rem;
            font-weight: 600;
            line-height: 1.4;
            margin-bottom: 10px;
            flex: 1;
        }
        .related-card h3 a {
            color: var(--primary);
            text-decoration: none;
        }
        .related-card h3 a:hover { color: var(--accent); }
        .related-card .rc-excerpt {
            font-size: 0.9rem;
            color: var(--text-weak);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 14px;
        }
        .related-card .rc-meta {
            font-size: 0.82rem;
            color: var(--text-weak);
            display: flex;
            justify-content: space-between;
            align-items: center;
            border-top: 1px solid var(--border);
            padding-top: 12px;
        }
        .related-card .rc-meta span { display: flex; align-items: center; gap: 4px; }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 780px;
            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);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover { border-color: var(--primary); box-shadow: var(--shadow-sm); }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 24px;
            cursor: pointer;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text);
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            font-family: var(--font-sans);
            transition: color var(--transition);
            gap: 16px;
        }
        .faq-question:hover { color: var(--primary); }
        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(30,58,95,0.06);
            border-radius: 50%;
            transition: all var(--transition);
            font-size: 0.85rem;
            color: var(--text-weak);
        }
        .faq-item.active .faq-question .faq-icon {
            background: var(--primary);
            color: var(--text-inverse);
            transform: rotate(180deg);
        }
        .faq-answer {
            padding: 0 24px 20px;
            font-size: 0.95rem;
            color: var(--text-weak);
            line-height: 1.7;
            display: none;
        }
        .faq-item.active .faq-answer { display: block; }
        .faq-answer p:last-child { margin-bottom: 0; }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            border-radius: var(--radius-lg);
            padding: 64px 52px;
            text-align: center;
            color: var(--text-inverse);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -60%;
            right: -20%;
            width: 500px;
            height: 500px;
            background: rgba(255,255,255,0.04);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -40%;
            left: -10%;
            width: 400px;
            height: 400px;
            background: rgba(255,255,255,0.03);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-section h2 {
            color: var(--text-inverse);
            margin-bottom: 16px;
            position: relative;
            z-index: 1;
        }
        .cta-section p {
            color: rgba(255,255,255,0.8);
            max-width: 600px;
            margin: 0 auto 32px;
            font-size: 1.05rem;
            position: relative;
            z-index: 1;
        }
        .cta-section .btn {
            position: relative;
            z-index: 1;
            background: var(--text-inverse);
            color: var(--primary);
            box-shadow: 0 8px 24px rgba(0,0,0,0.15);
        }
        .cta-section .btn:hover {
            background: var(--secondary);
            color: var(--text-inverse);
            transform: translateY(-2px);
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255,255,255,0.7);
            padding: 60px 0 28px;
            margin-top: 80px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .logo {
            color: var(--text-inverse);
            margin-bottom: 16px;
            font-size: 1.2rem;
        }
        .footer-brand .logo .logo-icon {
            background: var(--secondary);
            color: var(--primary-dark);
        }
        .footer-brand p {
            font-size: 0.92rem;
            color: rgba(255,255,255,0.55);
            line-height: 1.7;
            max-width: 340px;
        }
        .footer-col h4 {
            color: var(--text-inverse);
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 18px;
        }
        .footer-col ul li { margin-bottom: 10px; }
        .footer-col ul li a {
            color: rgba(255,255,255,0.55);
            font-size: 0.9rem;
            transition: color var(--transition);
        }
        .footer-col ul li a:hover { color: var(--secondary); }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.08);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
        }
        .footer-bottom p {
            font-size: 0.85rem;
            color: rgba(255,255,255,0.4);
            margin: 0;
        }
        .footer-bottom a { color: rgba(255,255,255,0.5); }
        .footer-bottom a:hover { color: var(--secondary); }
        .footer-social { display: flex; gap: 14px; }
        .footer-social a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: rgba(255,255,255,0.06);
            border-radius: 50%;
            color: rgba(255,255,255,0.5);
            transition: all var(--transition);
            font-size: 1rem;
        }
        .footer-social a:hover {
            background: var(--secondary);
            color: var(--primary-dark);
            transform: translateY(-2px);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .footer-brand { grid-column: 1 / -1; }
            .related-grid { grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); }
        }

        @media (max-width: 768px) {
            :root { --nav-height: 64px; }
            .site-header {
                top: 12px;
                width: calc(100% - 24px);
                padding: 0 16px;
                height: var(--nav-height);
            }
            .nav-links {
                display: none;
                position: absolute;
                top: calc(var(--nav-height) + 8px);
                right: 0;
                background: rgba(255,255,255,0.98);
                backdrop-filter: blur(18px);
                -webkit-backdrop-filter: blur(18px);
                border-radius: var(--radius-md);
                box-shadow: var(--shadow-lg);
                padding: 12px;
                flex-direction: column;
                gap: 4px;
                min-width: 200px;
                border: 1px solid var(--border);
            }
            .nav-links.open { display: flex; }
            .nav-links a {
                padding: 10px 16px;
                width: 100%;
                border-radius: var(--radius-sm);
            }
            .nav-links a.active { background: var(--primary); color: var(--text-inverse); }
            .nav-toggle { display: flex; }
            .article-wrap { padding: 28px 20px; }
            .section { padding: 48px 0; }
            .section-title { margin-bottom: 32px; }
            .cta-section { padding: 40px 24px; }
            .footer-grid { grid-template-columns: 1fr; gap: 28px; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .related-grid { grid-template-columns: 1fr; }
            .article-meta { gap: 12px; font-size: 0.85rem; }
            .breadcrumb { font-size: 0.82rem; }
        }

        @media (max-width: 520px) {
            .site-header {
                top: 8px;
                width: calc(100% - 16px);
                padding: 0 12px;
                height: 58px;
                border-radius: var(--radius-lg);
            }
            :root { --nav-height: 58px; }
            .logo { font-size: 1.05rem; }
            .logo-icon { width: 32px; height: 32px; font-size: 1rem; }
            .article-wrap { padding: 20px 16px; border-radius: var(--radius-md); }
            .article-header h1 { font-size: 1.3rem; }
            .article-body { font-size: 0.98rem; }
            .cta-section { padding: 32px 20px; border-radius: var(--radius-md); }
            .cta-section h2 { font-size: 1.3rem; }
            .section { padding: 32px 0; }
            .faq-question { padding: 16px 18px; font-size: 0.92rem; }
            .faq-answer { padding: 0 18px 16px; font-size: 0.88rem; }
            .not-found-box { padding: 48px 16px; }
            .not-found-box .nf-icon { font-size: 3rem; }
        }

/* roulang page: category2 */
/* ===== Design Variables ===== */
        :root {
            --primary: #2563eb;
            --primary-dark: #1d4ed8;
            --primary-light: #3b82f6;
            --primary-bg: #eff6ff;
            --secondary: #0ea5e9;
            --secondary-dark: #0284c7;
            --accent: #f59e0b;
            --accent-dark: #d97706;
            --success: #10b981;
            --danger: #ef4444;
            --gray-50: #f9fafb;
            --gray-100: #f3f4f6;
            --gray-200: #e5e7eb;
            --gray-300: #d1d5db;
            --gray-400: #9ca3af;
            --gray-500: #6b7280;
            --gray-600: #4b5563;
            --gray-700: #374151;
            --gray-800: #1f2937;
            --gray-900: #111827;
            --text-primary: #111827;
            --text-secondary: #4b5563;
            --text-muted: #9ca3af;
            --border: #e5e7eb;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.10);
            --shadow-xl: 0 24px 60px rgba(0, 0, 0, 0.12);
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
            --container-max: 1200px;
            --header-height: 72px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background: #ffffff;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.3;
            color: var(--text-primary);
        }
        p {
            color: var(--text-secondary);
            margin-bottom: 0.5em;
        }

        /* ===== Container ===== */
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ===== Header / Navigation (悬浮胶囊) ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            padding: 12px 0;
            background: rgba(255, 255, 255, 0.82);
            backdrop-filter: blur(16px) saturate(180%);
            -webkit-backdrop-filter: blur(16px) saturate(180%);
            border-bottom: 1px solid rgba(229, 231, 235, 0.40);
            transition: background var(--transition), box-shadow var(--transition);
        }
        .site-header.scrolled {
            background: rgba(255, 255, 255, 0.95);
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
            gap: 20px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: -0.3px;
            white-space: nowrap;
        }
        .logo:hover {
            color: var(--primary);
        }
        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-sm);
            font-size: 20px;
            font-weight: 700;
            flex-shrink: 0;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .nav-links a {
            padding: 8px 18px;
            border-radius: 100px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            transition: background var(--transition), color var(--transition);
            white-space: nowrap;
        }
        .nav-links a:hover {
            background: var(--gray-100);
            color: var(--primary);
        }
        .nav-links a.active {
            background: var(--primary);
            color: #ffffff;
            box-shadow: 0 2px 12px rgba(37, 99, 235, 0.30);
        }
        .nav-links a.active:hover {
            background: var(--primary-dark);
            color: #fff;
        }
        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 24px;
            border-radius: 100px;
            background: var(--primary);
            color: #fff !important;
            font-weight: 600;
            font-size: 14px;
            transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
            box-shadow: 0 2px 12px rgba(37, 99, 235, 0.25);
            white-space: nowrap;
        }
        .nav-cta:hover {
            background: var(--primary-dark) !important;
            transform: translateY(-1px);
            box-shadow: 0 6px 24px rgba(37, 99, 235, 0.35);
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 6px;
            background: none;
            border: none;
            cursor: pointer;
        }
        .nav-toggle span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: var(--text-primary);
            border-radius: 4px;
            transition: var(--transition);
        }
        .nav-toggle.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .nav-toggle.active span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }
        @media (max-width: 768px) {
            .nav-toggle {
                display: flex;
            }
            .nav-links {
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(16px);
                flex-direction: column;
                padding: 20px 24px 28px;
                gap: 6px;
                border-bottom: 1px solid var(--border);
                transform: translateY(-110%);
                opacity: 0;
                pointer-events: none;
                transition: transform 0.35s ease, opacity 0.3s ease;
                border-radius: 0 0 var(--radius-lg) var(--radius-lg);
                box-shadow: 0 12px 40px rgba(0, 0, 0, 0.08);
            }
            .nav-links.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav-links a {
                padding: 12px 20px;
                border-radius: var(--radius-sm);
                width: 100%;
                font-size: 16px;
            }
            .nav-cta {
                margin-top: 8px;
                justify-content: center;
                width: 100%;
            }
            .header-inner {
                padding: 0 16px;
            }
        }
        @media (max-width: 420px) {
            .logo {
                font-size: 18px;
            }
            .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 16px;
            }
            .nav-links a {
                font-size: 15px;
                padding: 10px 16px;
            }
        }

        /* ===== Hero (分类页首屏) ===== */
        .category-hero {
            padding: 140px 0 72px;
            background: linear-gradient(135deg, var(--primary-bg) 0%, #ffffff 70%);
            position: relative;
            overflow: hidden;
        }
        .category-hero::after {
            content: '';
            position: absolute;
            top: -40%;
            right: -20%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(37, 99, 235, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .category-hero .container {
            position: relative;
            z-index: 1;
            text-align: center;
            max-width: 820px;
        }
        .category-hero .breadcrumb {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 20px;
            flex-wrap: wrap;
        }
        .category-hero .breadcrumb a {
            color: var(--text-muted);
        }
        .category-hero .breadcrumb a:hover {
            color: var(--primary);
        }
        .category-hero .breadcrumb .sep {
            color: var(--gray-300);
        }
        .category-hero .breadcrumb .current {
            color: var(--text-secondary);
            font-weight: 500;
        }
        .category-hero h1 {
            font-size: 44px;
            font-weight: 800;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
            background: linear-gradient(135deg, var(--text-primary) 0%, var(--primary) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .category-hero p {
            font-size: 18px;
            color: var(--text-secondary);
            max-width: 640px;
            margin: 0 auto 32px;
            line-height: 1.8;
        }
        .category-hero .hero-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
        }
        .category-hero .hero-tags span {
            display: inline-block;
            padding: 6px 18px;
            border-radius: 100px;
            background: rgba(37, 99, 235, 0.10);
            color: var(--primary);
            font-size: 14px;
            font-weight: 500;
        }
        @media (max-width: 768px) {
            .category-hero {
                padding: 120px 0 52px;
            }
            .category-hero h1 {
                font-size: 30px;
            }
            .category-hero p {
                font-size: 16px;
            }
        }
        @media (max-width: 420px) {
            .category-hero h1 {
                font-size: 26px;
            }
        }

        /* ===== Section Shared ===== */
        .section {
            padding: 72px 0;
        }
        .section-alt {
            background: var(--gray-50);
        }
        .section-header {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 48px;
        }
        .section-header h2 {
            font-size: 34px;
            font-weight: 700;
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }
        .section-header p {
            font-size: 17px;
            color: var(--text-secondary);
            line-height: 1.8;
        }
        .section-header .badge {
            display: inline-block;
            padding: 4px 16px;
            border-radius: 100px;
            background: var(--primary-bg);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 12px;
        }
        @media (max-width: 768px) {
            .section {
                padding: 52px 0;
            }
            .section-header h2 {
                font-size: 26px;
            }
            .section-header p {
                font-size: 15px;
            }
        }

        /* ===== Grid / Cards ===== */
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }
        @media (max-width: 1024px) {
            .grid-3 {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 640px) {
            .grid-3,
            .grid-2 {
                grid-template-columns: 1fr;
            }
        }

        .card {
            background: #ffffff;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            padding: 28px 24px;
            transition: transform var(--transition), box-shadow var(--transition);
        }
        .card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }
        .card .card-icon {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: #fff;
            margin-bottom: 16px;
            background: var(--primary);
        }
        .card .card-icon.alt1 {
            background: #8b5cf6;
        }
        .card .card-icon.alt2 {
            background: var(--secondary);
        }
        .card .card-icon.alt3 {
            background: var(--accent);
        }
        .card .card-icon.alt4 {
            background: var(--success);
        }
        .card h3 {
            font-size: 20px;
            margin-bottom: 8px;
        }
        .card p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        .card .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-top: 14px;
            font-weight: 600;
            font-size: 14px;
            color: var(--primary);
        }
        .card .card-link i {
            font-size: 12px;
            transition: transform var(--transition);
        }
        .card .card-link:hover i {
            transform: translateX(4px);
        }

        /* ===== Steps Timeline ===== */
        .steps-list {
            counter-reset: step;
            max-width: 820px;
            margin: 0 auto;
        }
        .step-item {
            display: flex;
            gap: 24px;
            padding: 28px 0;
            border-bottom: 1px solid var(--border);
            counter-increment: step;
        }
        .step-item:last-child {
            border-bottom: none;
        }
        .step-number {
            flex-shrink: 0;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 20px;
            box-shadow: 0 4px 12px rgba(37, 99, 235, 0.25);
        }
        .step-number.alt1 {
            background: #8b5cf6;
        }
        .step-number.alt2 {
            background: var(--secondary);
        }
        .step-number.alt3 {
            background: var(--accent);
        }
        .step-number.alt4 {
            background: var(--success);
        }
        .step-number.alt5 {
            background: #f43f5e;
        }
        .step-content {
            flex: 1;
        }
        .step-content h3 {
            font-size: 20px;
            margin-bottom: 6px;
        }
        .step-content p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        @media (max-width: 640px) {
            .step-item {
                flex-direction: column;
                gap: 12px;
            }
            .step-number {
                width: 40px;
                height: 40px;
                font-size: 17px;
            }
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: #ffffff;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: box-shadow var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            width: 100%;
            padding: 18px 22px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
            background: none;
            text-align: left;
            gap: 12px;
        }
        .faq-question i {
            font-size: 14px;
            color: var(--text-muted);
            transition: transform var(--transition);
        }
        .faq-question.open i {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-answer {
            padding: 0 22px 18px;
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            display: none;
        }
        .faq-answer.open {
            display: block;
        }
        .faq-answer p {
            margin-bottom: 0.4em;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            color: #fff;
            text-align: center;
            padding: 72px 0;
        }
        .cta-section h2 {
            color: #fff;
            font-size: 34px;
            margin-bottom: 12px;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 17px;
            max-width: 560px;
            margin: 0 auto 28px;
        }
        .cta-section .btn-group {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: 100px;
            font-weight: 600;
            font-size: 15px;
            transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
        }
        .btn-primary {
            background: #fff;
            color: var(--primary) !important;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.10);
        }
        .btn-primary:hover {
            background: var(--gray-100);
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.15);
        }
        .btn-outline-light {
            background: transparent;
            color: #fff !important;
            border: 2px solid rgba(255, 255, 255, 0.50);
        }
        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: #fff;
            transform: translateY(-2px);
        }
        @media (max-width: 640px) {
            .cta-section h2 {
                font-size: 26px;
            }
            .btn {
                padding: 12px 24px;
                font-size: 14px;
            }
        }

        /* ===== Tip / Alert ===== */
        .tip-box {
            display: flex;
            gap: 16px;
            padding: 20px 24px;
            border-radius: var(--radius-sm);
            background: #fefce8;
            border-left: 4px solid var(--accent);
            margin: 20px 0;
        }
        .tip-box .tip-icon {
            font-size: 22px;
            color: var(--accent);
            flex-shrink: 0;
            margin-top: 2px;
        }
        .tip-box p {
            font-size: 15px;
            color: var(--text-secondary);
            margin: 0;
        }
        .tip-box strong {
            color: var(--text-primary);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--gray-900);
            color: rgba(255, 255, 255, 0.75);
            padding: 60px 0 32px;
        }
        .site-footer .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .logo {
            color: #fff;
            font-size: 20px;
            margin-bottom: 12px;
        }
        .footer-brand .logo .logo-icon {
            background: var(--primary);
        }
        .footer-brand p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.55);
            line-height: 1.8;
            max-width: 320px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 16px;
            margin-bottom: 16px;
            font-weight: 600;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.60);
            font-size: 14px;
            transition: color var(--transition);
        }
        .footer-col ul li a:hover {
            color: #fff;
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.10);
            flex-wrap: wrap;
            gap: 16px;
        }
        .footer-bottom p {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.45);
            margin: 0;
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.55);
        }
        .footer-bottom a:hover {
            color: #fff;
        }
        .footer-social {
            display: flex;
            gap: 16px;
        }
        .footer-social a {
            color: rgba(255, 255, 255, 0.45);
            font-size: 18px;
            transition: color var(--transition);
        }
        .footer-social a:hover {
            color: #fff;
        }
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1.2fr 1fr 1fr;
                gap: 32px;
            }
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }
        @media (max-width: 420px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .site-footer {
                padding: 40px 0 24px;
            }
        }

        /* ===== Extra Utilities ===== */
        .text-center {
            text-align: center;
        }
        .mb-16 {
            margin-bottom: 16px;
        }
        .mb-24 {
            margin-bottom: 24px;
        }
        .mb-32 {
            margin-bottom: 32px;
        }
        .mt-16 {
            margin-top: 16px;
        }
        .mt-24 {
            margin-top: 24px;
        }
        .mt-32 {
            margin-top: 32px;
        }
        .gap-8 {
            gap: 8px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .flex-wrap {
            flex-wrap: wrap;
        }

        /* ===== Responsive Fine-tune ===== */
        @media (max-width: 520px) {
            .category-hero h1 {
                font-size: 24px;
            }
            .category-hero p {
                font-size: 15px;
            }
            .card {
                padding: 20px 16px;
            }
            .card h3 {
                font-size: 18px;
            }
            .section-header h2 {
                font-size: 22px;
            }
            .faq-question {
                font-size: 15px;
                padding: 14px 16px;
            }
            .faq-answer {
                padding: 0 16px 14px;
                font-size: 14px;
            }
            .step-content h3 {
                font-size: 18px;
            }
        }

/* roulang page: category3 */
/* ===== Design Variables ===== */
        :root {
            --primary: #2563eb;
            --primary-dark: #1d4ed8;
            --primary-light: #dbeafe;
            --primary-gradient: linear-gradient(135deg, #2563eb 0%, #1e40af 100%);
            --secondary: #f59e0b;
            --secondary-light: #fef3c7;
            --accent: #10b981;
            --accent-light: #d1fae5;
            --bg-body: #f8fafc;
            --bg-card: #ffffff;
            --bg-dark: #0f172a;
            --bg-section-alt: #f1f5f9;
            --text-primary: #1e293b;
            --text-secondary: #64748b;
            --text-light: #94a3b8;
            --text-white: #ffffff;
            --border-color: #e2e8f0;
            --border-radius-sm: 8px;
            --border-radius: 12px;
            --border-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 24px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 12px 48px rgba(0, 0, 0, 0.12);
            --shadow-hover: 0 16px 40px rgba(37, 99, 235, 0.18);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-family: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, 'Helvetica Neue', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --container-width: 1200px;
            --header-height: 76px;
            --nav-blur: blur(16px);
        }

        /* ===== 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-family);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background-color: var(--bg-body);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            padding-top: var(--header-height);
        }

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

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

        a:hover {
            color: var(--primary-dark);
        }

        ul,
        ol {
            list-style: none;
        }

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

        button {
            cursor: pointer;
            background: none;
        }

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

        /* ===== Header / Navigation (悬浮胶囊导航) ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-height);
            background: rgba(255, 255, 255, 0.82);
            backdrop-filter: var(--nav-blur);
            -webkit-backdrop-filter: var(--nav-blur);
            border-bottom: 1px solid rgba(226, 232, 240, 0.5);
            transition: background var(--transition), box-shadow var(--transition);
        }

        .site-header.scrolled {
            background: rgba(255, 255, 255, 0.96);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.06);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            max-width: var(--container-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 800;
            color: var(--text-primary);
            text-decoration: none;
            letter-spacing: -0.3px;
        }

        .logo:hover {
            color: var(--text-primary);
        }

        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: var(--primary-gradient);
            color: var(--text-white);
            border-radius: 10px;
            font-size: 20px;
            font-weight: 700;
            flex-shrink: 0;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .nav-links a {
            display: inline-flex;
            align-items: center;
            padding: 8px 20px;
            border-radius: 50px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            text-decoration: none;
            transition: all var(--transition);
            position: relative;
        }

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

        .nav-links a.active {
            color: var(--text-white);
            background: var(--primary-gradient);
            box-shadow: 0 4px 16px rgba(37, 99, 235, 0.30);
        }

        .nav-links a.active:hover {
            color: var(--text-white);
            background: var(--primary-gradient);
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 6px;
            padding: 8px 4px;
            background: none;
            border: none;
            cursor: pointer;
        }

        .nav-toggle span {
            display: block;
            width: 26px;
            height: 3px;
            background: var(--text-primary);
            border-radius: 4px;
            transition: all var(--transition);
        }

        .nav-toggle.active span:nth-child(1) {
            transform: rotate(45deg) translate(6px, 6px);
        }

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

        .nav-toggle.active span:nth-child(3) {
            transform: rotate(-45deg) translate(6px, -6px);
        }

        /* ===== Mobile Nav ===== */
        .mobile-overlay {
            display: none;
            position: fixed;
            top: var(--header-height);
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(15, 23, 42, 0.5);
            backdrop-filter: blur(4px);
            z-index: 999;
            opacity: 0;
            transition: opacity 0.35s ease;
        }

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

        .mobile-drawer {
            position: fixed;
            top: var(--header-height);
            right: 0;
            width: 280px;
            max-width: 80vw;
            height: calc(100vh - var(--header-height));
            background: var(--bg-card);
            box-shadow: -8px 0 40px rgba(0, 0, 0, 0.10);
            padding: 24px 20px;
            transform: translateX(100%);
            transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            z-index: 1000;
            overflow-y: auto;
        }

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

        .mobile-drawer a {
            display: block;
            padding: 14px 16px;
            font-size: 17px;
            font-weight: 500;
            color: var(--text-primary);
            border-radius: var(--border-radius-sm);
            transition: all var(--transition);
            text-decoration: none;
        }

        .mobile-drawer a:hover {
            background: var(--primary-light);
            color: var(--primary);
        }

        .mobile-drawer a.active {
            background: var(--primary-gradient);
            color: var(--text-white);
            box-shadow: 0 4px 16px rgba(37, 99, 235, 0.25);
        }

        /* ===== Hero ===== */
        .help-hero {
            background: var(--primary-gradient);
            padding: 80px 0 100px;
            position: relative;
            overflow: hidden;
        }

        .help-hero::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 500px;
            height: 500px;
            background: rgba(255, 255, 255, 0.05);
            border-radius: 50%;
            pointer-events: none;
        }

        .help-hero::after {
            content: '';
            position: absolute;
            bottom: -30%;
            left: -10%;
            width: 400px;
            height: 400px;
            background: rgba(255, 255, 255, 0.04);
            border-radius: 50%;
            pointer-events: none;
        }

        .help-hero .container {
            position: relative;
            z-index: 1;
            text-align: center;
        }

        .help-hero h1 {
            font-size: 48px;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 16px;
            letter-spacing: -0.5px;
            line-height: 1.2;
        }

        .help-hero p {
            font-size: 20px;
            color: rgba(255, 255, 255, 0.85);
            max-width: 640px;
            margin: 0 auto 36px;
            line-height: 1.6;
        }

        .help-search {
            display: flex;
            max-width: 560px;
            margin: 0 auto;
            background: var(--text-white);
            border-radius: 60px;
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
            overflow: hidden;
            transition: box-shadow var(--transition);
        }

        .help-search:focus-within {
            box-shadow: 0 8px 40px rgba(0, 0, 0, 0.20);
        }

        .help-search input {
            flex: 1;
            padding: 16px 24px;
            font-size: 16px;
            border: none;
            background: transparent;
            color: var(--text-primary);
        }

        .help-search input::placeholder {
            color: var(--text-light);
        }

        .help-search button {
            padding: 16px 32px;
            background: var(--primary);
            color: var(--text-white);
            font-size: 16px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: background var(--transition);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .help-search button:hover {
            background: var(--primary-dark);
        }

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

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

        .section-title {
            font-size: 36px;
            font-weight: 800;
            color: var(--text-primary);
            text-align: center;
            margin-bottom: 12px;
            letter-spacing: -0.4px;
            line-height: 1.25;
        }

        .section-sub {
            font-size: 18px;
            color: var(--text-secondary);
            text-align: center;
            max-width: 640px;
            margin: 0 auto 48px;
            line-height: 1.6;
        }

        /* ===== Help Categories ===== */
        .help-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .help-card {
            background: var(--bg-card);
            border-radius: var(--border-radius);
            padding: 32px 24px 28px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: all var(--transition);
        }

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

        .help-card .icon-wrap {
            width: 64px;
            height: 64px;
            border-radius: 16px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 28px;
            margin-bottom: 18px;
            transition: transform var(--transition);
        }

        .help-card:hover .icon-wrap {
            transform: scale(1.08);
        }

        .help-card .icon-wrap.blue {
            background: var(--primary-light);
            color: var(--primary);
        }

        .help-card .icon-wrap.green {
            background: var(--accent-light);
            color: var(--accent);
        }

        .help-card .icon-wrap.amber {
            background: var(--secondary-light);
            color: var(--secondary);
        }

        .help-card .icon-wrap.purple {
            background: #ede9fe;
            color: #7c3aed;
        }

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

        .help-card p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 16px;
        }

        .help-card .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 15px;
            font-weight: 600;
            color: var(--primary);
            transition: gap var(--transition);
        }

        .help-card .card-link i {
            font-size: 13px;
            transition: transform var(--transition);
        }

        .help-card:hover .card-link i {
            transform: translateX(4px);
        }

        /* ===== 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(--border-radius);
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: box-shadow var(--transition);
        }

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

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 24px;
            font-size: 17px;
            font-weight: 600;
            color: var(--text-primary);
            cursor: pointer;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            transition: color var(--transition);
            gap: 12px;
        }

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

        .faq-question i {
            font-size: 18px;
            color: var(--text-light);
            transition: transform var(--transition);
            flex-shrink: 0;
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 24px;
            color: var(--text-secondary);
            font-size: 16px;
            line-height: 1.7;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }

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

        .contact-card {
            background: var(--bg-card);
            border-radius: var(--border-radius);
            padding: 36px 28px 32px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: all var(--transition);
        }

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

        .contact-card .icon-big {
            width: 72px;
            height: 72px;
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 32px;
            margin-bottom: 20px;
            transition: transform var(--transition);
        }

        .contact-card:hover .icon-big {
            transform: scale(1.06);
        }

        .contact-card .icon-big.blue {
            background: var(--primary-light);
            color: var(--primary);
        }

        .contact-card .icon-big.green {
            background: var(--accent-light);
            color: var(--accent);
        }

        .contact-card .icon-big.amber {
            background: var(--secondary-light);
            color: var(--secondary);
        }

        .contact-card h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 6px;
        }

        .contact-card .contact-desc {
            font-size: 15px;
            color: var(--text-secondary);
            margin-bottom: 12px;
        }

        .contact-card .contact-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 16px;
            font-weight: 600;
            color: var(--primary);
            padding: 8px 20px;
            border-radius: 50px;
            background: var(--primary-light);
            transition: all var(--transition);
        }

        .contact-card .contact-link:hover {
            background: var(--primary);
            color: var(--text-white);
        }

        /* ===== Safety Tips ===== */
        .tips-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .tip-card {
            display: flex;
            gap: 20px;
            background: var(--bg-card);
            border-radius: var(--border-radius);
            padding: 28px 24px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: all var(--transition);
        }

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

        .tip-card .tip-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            flex-shrink: 0;
        }

        .tip-card .tip-icon.green {
            background: var(--accent-light);
            color: var(--accent);
        }

        .tip-card .tip-icon.blue {
            background: var(--primary-light);
            color: var(--primary);
        }

        .tip-card .tip-icon.amber {
            background: var(--secondary-light);
            color: var(--secondary);
        }

        .tip-card .tip-icon.red {
            background: #fee2e2;
            color: #ef4444;
        }

        .tip-card h4 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 4px;
        }

        .tip-card p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.6;
        }

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

        .step-item {
            background: var(--bg-card);
            border-radius: var(--border-radius);
            padding: 32px 24px 28px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            position: relative;
            transition: all var(--transition);
        }

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

        .step-item::before {
            counter-increment: step-counter;
            content: "0" counter(step-counter);
            position: absolute;
            top: 16px;
            right: 20px;
            font-size: 40px;
            font-weight: 900;
            color: rgba(37, 99, 235, 0.08);
            line-height: 1;
            transition: color var(--transition);
        }

        .step-item:hover::before {
            color: rgba(37, 99, 235, 0.18);
        }

        .step-item .step-icon {
            width: 56px;
            height: 56px;
            border-radius: 14px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            margin-bottom: 16px;
            background: var(--primary-light);
            color: var(--primary);
            transition: transform var(--transition);
        }

        .step-item:hover .step-icon {
            transform: scale(1.08);
        }

        .step-item h4 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 6px;
        }

        .step-item p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--primary-gradient);
            padding: 72px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -60%;
            left: -20%;
            width: 500px;
            height: 500px;
            background: rgba(255, 255, 255, 0.05);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -40%;
            right: -10%;
            width: 400px;
            height: 400px;
            background: rgba(255, 255, 255, 0.04);
            border-radius: 50%;
            pointer-events: none;
        }

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

        .cta-section h2 {
            font-size: 36px;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 12px;
            letter-spacing: -0.4px;
        }

        .cta-section p {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.85);
            max-width: 560px;
            margin: 0 auto 32px;
            line-height: 1.6;
        }

        .cta-btn-group {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 16px 36px;
            border-radius: 60px;
            font-size: 17px;
            font-weight: 600;
            transition: all var(--transition);
            text-decoration: none;
            border: none;
            cursor: pointer;
        }

        .btn-white {
            background: var(--text-white);
            color: var(--primary);
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.10);
        }

        .btn-white:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.18);
            color: var(--primary-dark);
        }

        .btn-outline-light {
            background: transparent;
            color: var(--text-white);
            border: 2px solid rgba(255, 255, 255, 0.5);
        }

        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: var(--text-white);
            transform: translateY(-3px);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.75);
            padding: 60px 0 32px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.8fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-brand .logo {
            color: var(--text-white);
            margin-bottom: 12px;
            display: inline-flex;
        }

        .footer-brand .logo .logo-icon {
            background: rgba(255, 255, 255, 0.15);
            color: var(--text-white);
        }

        .footer-brand p {
            font-size: 15px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.6);
            max-width: 320px;
        }

        .footer-col h4 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 16px;
        }

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

        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 15px;
            transition: color var(--transition);
        }

        .footer-col ul li a:hover {
            color: var(--text-white);
        }

        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            font-size: 14px;
            color: rgba(255, 255, 255, 0.5);
        }

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

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

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

        .footer-social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            color: rgba(255, 255, 255, 0.6);
            font-size: 16px;
            transition: all var(--transition);
        }

        .footer-social a:hover {
            background: var(--primary);
            color: var(--text-white);
            transform: translateY(-2px);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .help-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .contact-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .help-hero h1 {
                font-size: 38px;
            }
            .section-title {
                font-size: 30px;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }
            .nav-toggle {
                display: flex;
            }
            .help-hero {
                padding: 60px 0 72px;
            }
            .help-hero h1 {
                font-size: 32px;
            }
            .help-hero p {
                font-size: 17px;
            }
            .help-search {
                flex-direction: column;
                border-radius: var(--border-radius);
            }
            .help-search input {
                padding: 14px 18px;
                border-radius: var(--border-radius) var(--border-radius) 0 0;
            }
            .help-search button {
                padding: 14px 18px;
                border-radius: 0 0 var(--border-radius) var(--border-radius);
                justify-content: center;
            }
            .help-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .contact-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .tips-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .steps-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .section {
                padding: 56px 0;
            }
            .section-title {
                font-size: 28px;
            }
            .section-sub {
                font-size: 16px;
                margin-bottom: 32px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .cta-section h2 {
                font-size: 28px;
            }
            .btn {
                padding: 14px 28px;
                font-size: 16px;
            }
        }

        @media (max-width: 520px) {
            .help-hero h1 {
                font-size: 26px;
            }
            .help-hero p {
                font-size: 15px;
            }
            .section-title {
                font-size: 24px;
            }
            .faq-question {
                font-size: 15px;
                padding: 16px 18px;
            }
            .faq-answer {
                font-size: 14px;
            }
            .contact-card {
                padding: 24px 18px;
            }
            .tip-card {
                flex-direction: column;
                align-items: flex-start;
                padding: 20px 18px;
            }
            .step-item {
                padding: 24px 18px;
            }
            .header-inner {
                padding: 0 16px;
            }
            .container {
                padding: 0 16px;
            }
            .footer-grid {
                gap: 20px;
            }
            .footer-bottom {
                font-size: 13px;
            }
        }

        /* ===== Accessibility ===== */
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 3px solid var(--primary);
            outline-offset: 2px;
        }

        .skip-link {
            position: absolute;
            top: -100%;
            left: 16px;
            padding: 12px 24px;
            background: var(--primary);
            color: var(--text-white);
            border-radius: var(--border-radius-sm);
            z-index: 10000;
            transition: top 0.3s;
        }

        .skip-link:focus {
            top: 12px;
        }

        /* ===== Animations ===== */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .animate-in {
            animation: fadeInUp 0.6s ease forwards;
        }

        .delay-1 {
            animation-delay: 0.1s;
        }
        .delay-2 {
            animation-delay: 0.2s;
        }
        .delay-3 {
            animation-delay: 0.3s;
        }
        .delay-4 {
            animation-delay: 0.4s;
        }