/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #0d1b2a;
            --primary-light: #1b3a5c;
            --primary-dark: #070f1a;
            --secondary: #f0b429;
            --secondary-light: #f7d06a;
            --secondary-dark: #d49a1a;
            --accent: #e8922a;
            --bg-body: #f4f6f9;
            --bg-card: #ffffff;
            --bg-dark: #0a1628;
            --text-primary: #1a1a2e;
            --text-secondary: #4a4a5a;
            --text-light: #f0f4f8;
            --text-muted: #8a8a9a;
            --border: #e2e6ed;
            --radius: 14px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
            --shadow-hover: 0 12px 40px rgba(0, 0, 0, 0.12);
            --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.10);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-primary: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --container-max: 1200px;
            --header-height: 72px;
        }
        /* ===== 基础 Reset ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body {
            font-family: var(--font-primary);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-body);
            min-height: 100vh;
        }
        a { color: var(--primary-light); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--secondary); }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
        button, input, textarea, select { font-family: inherit; font-size: inherit; outline: none; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.25; font-weight: 700; color: var(--primary); }
        /* ===== 容器 ===== */
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        .container-narrow { max-width: 880px; }
        /* ===== 通用间距 ===== */
        .section { padding: 80px 0; }
        .section-sm { padding: 48px 0; }
        .section-lg { padding: 120px 0; }
        .section-title {
            font-size: 2.2rem;
            margin-bottom: 12px;
            letter-spacing: -0.02em;
            color: var(--primary);
        }
        .section-subtitle {
            font-size: 1.1rem;
            color: var(--text-secondary);
            max-width: 640px;
            margin: 0 auto 48px;
            text-align: center;
            line-height: 1.6;
        }
        .section-header { text-align: center; margin-bottom: 56px; }
        .section-header .section-title { margin-bottom: 16px; }
        .divider {
            width: 60px;
            height: 4px;
            background: linear-gradient(90deg, var(--secondary), var(--accent));
            border-radius: 4px;
            margin: 0 auto 20px;
        }
        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 14px 36px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            text-align: center;
            line-height: 1.2;
            background: var(--secondary);
            color: var(--primary-dark);
            box-shadow: 0 4px 16px rgba(240, 180, 41, 0.30);
        }
        .btn:hover {
            background: var(--secondary-light);
            color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(240, 180, 41, 0.40);
        }
        .btn:active { transform: translateY(0); box-shadow: 0 2px 8px rgba(240, 180, 41, 0.25); }
        .btn:focus-visible { outline: 3px solid var(--secondary); outline-offset: 3px; }
        .btn-outline {
            background: transparent;
            border: 2px solid var(--secondary);
            color: var(--secondary);
            box-shadow: none;
        }
        .btn-outline:hover { background: var(--secondary); color: var(--primary-dark); box-shadow: 0 4px 16px rgba(240, 180, 41, 0.25); }
        .btn-primary {
            background: var(--primary-light);
            color: var(--text-light);
            box-shadow: 0 4px 16px rgba(27, 58, 92, 0.30);
        }
        .btn-primary:hover { background: var(--primary); color: var(--text-light); transform: translateY(-2px); }
        .btn-lg { padding: 18px 48px; font-size: 1.1rem; }
        .btn-sm { padding: 10px 22px; font-size: 0.9rem; }
        /* ===== 标签/徽章 ===== */
        .badge {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 600;
            background: rgba(240, 180, 41, 0.12);
            color: var(--secondary-dark);
            border: 1px solid rgba(240, 180, 41, 0.20);
            margin-bottom: 12px;
        }
        .badge-primary {
            background: rgba(27, 58, 92, 0.10);
            color: var(--primary-light);
            border-color: rgba(27, 58, 92, 0.15);
        }
        .badge-light {
            background: rgba(255, 255, 255, 0.15);
            color: var(--text-light);
            border-color: rgba(255, 255, 255, 0.20);
        }
        /* ===== 卡片 ===== */
        .card {
            background: var(--bg-card);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            transition: var(--transition);
            overflow: hidden;
            border: 1px solid var(--border);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .card:hover { box-shadow: var(--shadow-hover); transform: translateY(-4px); }
        .card-image { width: 100%; aspect-ratio: 16 / 10; object-fit: cover; border-radius: var(--radius) var(--radius) 0 0; }
        .card-body { padding: 28px 24px; flex: 1; display: flex; flex-direction: column; }
        .card-title { font-size: 1.2rem; font-weight: 700; margin-bottom: 8px; color: var(--primary); }
        .card-text { color: var(--text-secondary); font-size: 0.95rem; line-height: 1.6; flex: 1; }
        .card-meta { font-size: 0.85rem; color: var(--text-muted); margin-top: 16px; display: flex; align-items: center; gap: 12px; }
        .card-tag { display: inline-block; padding: 2px 10px; border-radius: 50px; font-size: 0.75rem; font-weight: 600; background: rgba(240, 180, 41, 0.10); color: var(--secondary-dark); }
        /* ===== 网格 ===== */
        .grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }
        .grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 32px; }
        .grid-4 { display: grid; grid-template-columns: 1fr 1fr 1fr 1fr; gap: 28px; }
        .flex-center { display: flex; align-items: center; justify-content: center; }
        .flex-between { display: flex; align-items: center; justify-content: space-between; }
        .gap-12 { gap: 12px; }
        .gap-24 { gap: 24px; }
        /* ===== Header / 导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(13, 27, 42, 0.96);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            height: var(--header-height);
            display: flex;
            align-items: center;
        }
        .site-header .container { display: flex; align-items: center; justify-content: space-between; width: 100%; }
        .logo {
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--text-light);
            letter-spacing: -0.02em;
            background: linear-gradient(135deg, var(--secondary), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            white-space: nowrap;
        }
        .logo:hover { opacity: 0.9; }
        .nav-list { display: flex; align-items: center; gap: 8px; }
        .nav-list a {
            padding: 8px 20px;
            border-radius: 50px;
            font-weight: 500;
            font-size: 0.95rem;
            color: rgba(255, 255, 255, 0.75);
            transition: var(--transition);
            position: relative;
        }
        .nav-list a:hover { color: var(--text-light); background: rgba(255, 255, 255, 0.08); }
        .nav-list a.active { color: var(--secondary); background: rgba(240, 180, 41, 0.12); }
        .nav-cta {
            background: var(--secondary) !important;
            color: var(--primary-dark) !important;
            font-weight: 700 !important;
            padding: 8px 24px !important;
            border-radius: 50px !important;
        }
        .nav-cta:hover { background: var(--secondary-light) !important; color: var(--primary-dark) !important; transform: translateY(-1px); }
        .hamburger { display: none; background: none; border: none; color: var(--text-light); font-size: 1.6rem; cursor: pointer; padding: 4px; }
        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 85vh;
            display: flex;
            align-items: center;
            background: var(--primary-dark);
            overflow: hidden;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.35;
            transform: scale(1.02);
            transition: transform 0.6s ease;
        }
        .hero:hover .hero-bg { transform: scale(1.04); }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(13, 27, 42, 0.88) 0%, rgba(13, 27, 42, 0.60) 50%, rgba(13, 27, 42, 0.85) 100%);
        }
        .hero-content { position: relative; z-index: 2; max-width: 720px; padding: 60px 0; }
        .hero-content .badge { margin-bottom: 16px; }
        .hero-title {
            font-size: 3.6rem;
            font-weight: 800;
            color: var(--text-light);
            line-height: 1.15;
            letter-spacing: -0.03em;
            margin-bottom: 24px;
            text-shadow: 0 2px 20px rgba(0,0,0,0.30);
        }
        .hero-title span { color: var(--secondary); }
        .hero-text {
            font-size: 1.2rem;
            color: rgba(255, 255, 255, 0.80);
            max-width: 580px;
            line-height: 1.7;
            margin-bottom: 36px;
        }
        .hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
        /* ===== 平台简介 ===== */
        .intro-section {
            background: var(--bg-card);
            border-top: 1px solid var(--border);
        }
        .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }
        .intro-image {
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-lg);
            width: 100%;
            aspect-ratio: 4 / 3;
            object-fit: cover;
        }
        .intro-content h2 { font-size: 2rem; margin-bottom: 20px; }
        .intro-content p { color: var(--text-secondary); font-size: 1.05rem; margin-bottom: 16px; line-height: 1.8; }
        /* ===== 核心优势 ===== */
        .features-section { background: var(--bg-body); }
        .feature-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 36px 28px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            transition: var(--transition);
            text-align: center;
            height: 100%;
        }
        .feature-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-6px); }
        .feature-icon {
            width: 64px;
            height: 64px;
            border-radius: 16px;
            background: linear-gradient(135deg, rgba(240, 180, 41, 0.12), rgba(232, 146, 42, 0.08));
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            font-size: 1.8rem;
            color: var(--secondary-dark);
        }
        .feature-card h3 { font-size: 1.2rem; margin-bottom: 12px; }
        .feature-card p { color: var(--text-secondary); font-size: 0.95rem; line-height: 1.6; }
        /* ===== 分类入口 ===== */
        .categories-section { background: var(--primary-dark); color: var(--text-light); }
        .categories-section .section-title { color: var(--text-light); }
        .categories-section .section-subtitle { color: rgba(255, 255, 255, 0.70); }
        .categories-section .divider { background: linear-gradient(90deg, var(--secondary), var(--accent)); }
        .cat-card {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.10);
            border-radius: var(--radius);
            padding: 32px 24px;
            text-align: center;
            transition: var(--transition);
            height: 100%;
            backdrop-filter: blur(4px);
        }
        .cat-card:hover { background: rgba(255, 255, 255, 0.10); border-color: var(--secondary); transform: translateY(-4px); }
        .cat-card i { font-size: 2.4rem; color: var(--secondary); margin-bottom: 16px; display: block; }
        .cat-card h3 { font-size: 1.2rem; color: var(--text-light); margin-bottom: 8px; }
        .cat-card p { color: rgba(255, 255, 255, 0.60); font-size: 0.9rem; line-height: 1.5; }
        .cat-card a { color: inherit; display: block; }
        .cat-card a:hover { color: var(--secondary); }
        /* ===== 使用流程 ===== */
        .steps-section { background: var(--bg-card); }
        .step-item {
            display: flex;
            gap: 24px;
            padding: 28px 0;
            border-bottom: 1px solid var(--border);
            align-items: flex-start;
        }
        .step-item:last-child { border-bottom: none; }
        .step-number {
            flex-shrink: 0;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--secondary), var(--accent));
            color: var(--primary-dark);
            font-weight: 800;
            font-size: 1.2rem;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .step-content h4 { font-size: 1.15rem; margin-bottom: 6px; }
        .step-content p { color: var(--text-secondary); font-size: 0.95rem; line-height: 1.6; }
        /* ===== 最新资讯 (CMS) ===== */
        .news-section { background: var(--bg-body); }
        .news-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            overflow: hidden;
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .news-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-4px); }
        .news-card .card-image { aspect-ratio: 16 / 9; }
        .news-card .card-body { padding: 22px 20px; flex: 1; }
        .news-card .card-title { font-size: 1.05rem; }
        .news-card .card-text { font-size: 0.9rem; }
        .news-empty {
            text-align: center;
            padding: 48px 24px;
            color: var(--text-muted);
            font-size: 1.05rem;
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px dashed var(--border);
        }
        /* ===== FAQ ===== */
        .faq-section { background: var(--bg-card); }
        .faq-item {
            border-bottom: 1px solid var(--border);
            padding: 20px 0;
        }
        .faq-item:first-child { padding-top: 0; }
        .faq-question {
            font-weight: 600;
            font-size: 1.05rem;
            color: var(--primary);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            user-select: none;
        }
        .faq-question i { color: var(--secondary); transition: var(--transition); font-size: 1.1rem; }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .faq-answer.open { max-height: 300px; padding-top: 16px; }
        .faq-question.active i { transform: rotate(180deg); }
        /* ===== CTA ===== */
        .cta-section {
            background: var(--primary-dark);
            text-align: center;
            padding: 80px 0;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.12;
        }
        .cta-section .container { position: relative; z-index: 2; }
        .cta-section h2 { color: var(--text-light); font-size: 2.2rem; margin-bottom: 16px; }
        .cta-section p { color: rgba(255, 255, 255, 0.75); font-size: 1.1rem; max-width: 560px; margin: 0 auto 32px; }
        .cta-section .btn { font-size: 1.1rem; padding: 16px 44px; }
        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--primary);
            color: rgba(255, 255, 255, 0.70);
            padding: 48px 0 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 48px; margin-bottom: 32px; }
        .footer-brand .logo { font-size: 1.3rem; margin-bottom: 12px; display: inline-block; }
        .footer-brand p { font-size: 0.9rem; line-height: 1.7; max-width: 320px; }
        .footer-links h4 { color: var(--text-light); font-size: 1rem; margin-bottom: 16px; }
        .footer-links a { display: block; padding: 4px 0; font-size: 0.9rem; color: rgba(255, 255, 255, 0.60); }
        .footer-links a:hover { color: var(--secondary); }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.45);
        }
        .footer-bottom a { color: rgba(255, 255, 255, 0.55); }
        .footer-bottom a:hover { color: var(--secondary); }
        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .grid-4 { grid-template-columns: 1fr 1fr; }
            .intro-grid { gap: 40px; }
            .hero-title { font-size: 2.8rem; }
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 768px) {
            .hamburger { display: block; }
            .nav-list {
                display: none;
                position: absolute;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: rgba(13, 27, 42, 0.98);
                flex-direction: column;
                padding: 20px 24px;
                gap: 4px;
                border-bottom: 1px solid rgba(255, 255, 255, 0.06);
                backdrop-filter: blur(12px);
            }
            .nav-list.open { display: flex; }
            .nav-list a { width: 100%; padding: 12px 16px; }
            .section { padding: 56px 0; }
            .section-lg { padding: 72px 0; }
            .hero { min-height: 70vh; }
            .hero-title { font-size: 2.2rem; }
            .hero-text { font-size: 1.05rem; }
            .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; gap: 24px; }
            .intro-grid { grid-template-columns: 1fr; gap: 32px; }
            .intro-image { aspect-ratio: 16 / 10; }
            .section-title { font-size: 1.7rem; }
            .footer-grid { grid-template-columns: 1fr; gap: 32px; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .news-card .card-image { aspect-ratio: 16 / 9; }
            .step-item { flex-direction: column; gap: 12px; }
            .cta-section h2 { font-size: 1.7rem; }
        }
        @media (max-width: 520px) {
            .container { padding: 0 16px; }
            .hero-title { font-size: 1.8rem; }
            .hero-actions { flex-direction: column; }
            .btn-lg { padding: 14px 32px; font-size: 1rem; }
            .logo { font-size: 1.1rem; }
            .section-title { font-size: 1.4rem; }
            .feature-card { padding: 24px 18px; }
            .cat-card { padding: 24px 16px; }
        }
        /* ===== 辅助 ===== */
        .text-center { text-align: center; }
        .mt-24 { margin-top: 24px; }
        .mb-24 { margin-bottom: 24px; }
        .mb-48 { margin-bottom: 48px; }
        .w-full { width: 100%; }
        .relative { position: relative; }
        .overflow-hidden { overflow: hidden; }
        .bg-cover { background-size: cover; background-position: center; background-repeat: no-repeat; }
        .rounded-full { border-radius: 50%; }
        .shadow-md { box-shadow: var(--shadow); }
        .transition { transition: var(--transition); }
        .flex-wrap { flex-wrap: wrap; }
        .gap-16 { gap: 16px; }
        .gap-8 { gap: 8px; }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a3a6b;
            --primary-light: #2a5a9b;
            --primary-dark: #0f2444;
            --accent: #e8a838;
            --accent-light: #f0c060;
            --accent-dark: #c88820;
            --bg-body: #f5f7fb;
            --bg-white: #ffffff;
            --bg-section-alt: #eef1f7;
            --bg-dark: #0f1a2e;
            --text-dark: #1a2a3a;
            --text-body: #3a4a5a;
            --text-muted: #7a8a9a;
            --text-light: #f0f4fa;
            --border-color: #dce2ec;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 6px 24px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.12);
            --shadow-accent: 0 6px 24px rgba(232, 168, 56, 0.35);
            --font-main: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --max-width: 1200px;
            --header-height: 72px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-main);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-body);
            background: var(--bg-body);
            -webkit-font-smoothing: antialiased;
            padding-top: var(--header-height);
        }
        a {
            color: var(--primary-light);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--accent);
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 3px solid var(--accent);
            outline-offset: 2px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-md);
        }
        ul,
        ol {
            list-style: none;
            padding: 0;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            color: var(--text-dark);
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 0.5em;
        }
        p {
            margin-bottom: 1em;
        }

        /* ===== Container ===== */
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
            width: 100%;
        }

        /* ===== 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 999;
            height: var(--header-height);
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-color);
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
            transition: box-shadow var(--transition);
        }
        .site-header.scrolled {
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--header-height);
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        .logo {
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
        }
        .logo i {
            color: var(--accent);
            font-size: 1.5rem;
        }
        .logo:hover {
            color: var(--primary-light);
        }
        .nav-list {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-list a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-body);
            transition: all var(--transition);
            position: relative;
        }
        .nav-list a:hover {
            color: var(--primary);
            background: rgba(26, 58, 107, 0.06);
        }
        .nav-list a.active {
            color: var(--primary);
            background: rgba(26, 58, 107, 0.10);
            font-weight: 600;
        }
        .nav-list a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 60%;
            height: 3px;
            background: var(--accent);
            border-radius: 4px;
        }
        .nav-list a.nav-cta {
            background: var(--accent);
            color: var(--primary-dark);
            font-weight: 700;
            padding: 10px 24px;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-accent);
            margin-left: 8px;
        }
        .nav-list a.nav-cta:hover {
            background: var(--accent-light);
            transform: translateY(-1px);
            box-shadow: 0 8px 28px rgba(232, 168, 56, 0.40);
        }
        .nav-list a.nav-cta i {
            margin-right: 6px;
            font-size: 0.85rem;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.6rem;
            color: var(--primary);
            cursor: pointer;
            padding: 4px 8px;
            border-radius: var(--radius-sm);
        }
        .nav-toggle:hover {
            background: rgba(26, 58, 107, 0.06);
        }

        /* ===== 移动端导航 ===== */
        @media (max-width: 768px) {
            .nav-toggle {
                display: block;
            }
            .nav-list {
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: var(--bg-white);
                flex-direction: column;
                padding: 16px 20px 24px;
                gap: 4px;
                box-shadow: 0 12px 32px rgba(0, 0, 0, 0.12);
                transform: translateY(-120%);
                opacity: 0;
                pointer-events: none;
                transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
                border-bottom: 3px solid var(--accent);
                z-index: 998;
            }
            .nav-list.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav-list a {
                padding: 12px 16px;
                width: 100%;
                text-align: left;
                font-size: 1.05rem;
                border-radius: var(--radius-sm);
            }
            .nav-list a.active::after {
                display: none;
            }
            .nav-list a.nav-cta {
                margin-left: 0;
                margin-top: 8px;
                text-align: center;
                justify-content: center;
            }
        }

        @media (min-width: 769px) {
            .nav-list {
                display: flex !important;
                opacity: 1 !important;
                pointer-events: auto !important;
                transform: none !important;
                position: static !important;
                box-shadow: none !important;
                padding: 0 !important;
                background: transparent !important;
                border-bottom: none !important;
            }
        }

        /* ===== Banner ===== */
        .page-banner {
            position: relative;
            background: var(--primary-dark);
            min-height: 280px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            overflow: hidden;
            padding: 60px 20px;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.25;
            z-index: 0;
        }
        .page-banner::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 36, 68, 0.88) 0%, rgba(26, 58, 107, 0.78) 100%);
            z-index: 1;
        }
        .banner-content {
            position: relative;
            z-index: 2;
            max-width: 800px;
            color: var(--text-light);
        }
        .banner-content h1 {
            font-size: 2.6rem;
            color: #fff;
            margin-bottom: 16px;
            font-weight: 800;
            letter-spacing: -0.5px;
        }
        .banner-content h1 i {
            color: var(--accent);
            margin-right: 10px;
        }
        .banner-content p {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 640px;
            margin: 0 auto 20px;
            line-height: 1.7;
        }
        .banner-breadcrumb {
            display: flex;
            justify-content: center;
            gap: 12px;
            font-size: 0.95rem;
            color: rgba(255, 255, 255, 0.7);
        }
        .banner-breadcrumb a {
            color: var(--accent);
        }
        .banner-breadcrumb a:hover {
            color: var(--accent-light);
        }
        .banner-breadcrumb span {
            color: rgba(255, 255, 255, 0.9);
        }

        @media (max-width: 768px) {
            .page-banner {
                min-height: 200px;
                padding: 40px 16px;
            }
            .banner-content h1 {
                font-size: 1.8rem;
            }
            .banner-content p {
                font-size: 1rem;
            }
        }
        @media (max-width: 520px) {
            .banner-content h1 {
                font-size: 1.5rem;
            }
            .banner-content p {
                font-size: 0.92rem;
            }
        }

        /* ===== 通用板块 ===== */
        .section {
            padding: 70px 0;
        }
        .section-alt {
            background: var(--bg-section-alt);
        }
        .section-white {
            background: var(--bg-white);
        }
        .section-dark {
            background: var(--bg-dark);
            color: var(--text-light);
        }
        .section-dark h2,
        .section-dark h3,
        .section-dark h4 {
            color: #fff;
        }
        .section-title {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-title h2 {
            font-size: 2.2rem;
            font-weight: 800;
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }
        .section-title h2 i {
            color: var(--accent);
            margin-right: 8px;
        }
        .section-title p {
            font-size: 1.1rem;
            color: var(--text-muted);
            max-width: 640px;
            margin: 0 auto;
        }
        .section-title .title-line {
            display: inline-block;
            width: 60px;
            height: 4px;
            background: var(--accent);
            border-radius: 4px;
            margin-top: 12px;
        }

        @media (max-width: 768px) {
            .section {
                padding: 48px 0;
            }
            .section-title h2 {
                font-size: 1.6rem;
            }
            .section-title p {
                font-size: 1rem;
            }
        }

        /* ===== 指南步骤 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }
        .step-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 36px 28px 32px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: all var(--transition);
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .step-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: var(--accent);
        }
        .step-card .step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-size: 1.4rem;
            font-weight: 800;
            margin-bottom: 18px;
            transition: all var(--transition);
        }
        .step-card:hover .step-number {
            background: var(--accent);
            color: var(--primary-dark);
            transform: scale(1.08);
        }
        .step-card h3 {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .step-card p {
            font-size: 0.95rem;
            color: var(--text-muted);
            margin-bottom: 0;
            line-height: 1.6;
        }
        .step-card .step-icon {
            font-size: 2rem;
            color: var(--accent);
            margin-bottom: 12px;
        }

        @media (max-width: 768px) {
            .steps-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .step-card {
                padding: 28px 20px 24px;
            }
        }
        @media (min-width: 769px) and (max-width: 1024px) {
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        /* ===== 内容区块 ===== */
        .content-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .content-block.reverse {
            direction: rtl;
        }
        .content-block.reverse>* {
            direction: ltr;
        }
        .content-text h3 {
            font-size: 1.6rem;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .content-text h3 i {
            color: var(--accent);
            margin-right: 8px;
        }
        .content-text p {
            font-size: 1rem;
            color: var(--text-body);
            line-height: 1.8;
            margin-bottom: 16px;
        }
        .content-text ul {
            padding: 0;
            margin: 16px 0 0;
        }
        .content-text ul li {
            padding: 6px 0 6px 28px;
            position: relative;
            font-size: 0.98rem;
            color: var(--text-body);
        }
        .content-text ul li::before {
            content: '\f00c';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            position: absolute;
            left: 0;
            top: 6px;
            color: var(--accent);
            font-size: 0.85rem;
        }
        .content-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            background: var(--bg-section-alt);
            min-height: 280px;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .content-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: var(--radius-lg);
        }

        @media (max-width: 768px) {
            .content-block {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .content-block.reverse {
                direction: ltr;
            }
            .content-text h3 {
                font-size: 1.3rem;
            }
            .content-image {
                min-height: 200px;
                order: -1;
            }
        }

        /* ===== 功能卡片网格 ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .feature-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: 28px 22px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: all var(--transition);
            text-align: center;
        }
        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: var(--accent);
        }
        .feature-card .f-icon {
            font-size: 2.2rem;
            color: var(--primary);
            margin-bottom: 14px;
            display: block;
            transition: all var(--transition);
        }
        .feature-card:hover .f-icon {
            color: var(--accent);
            transform: scale(1.1);
        }
        .feature-card h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .feature-card p {
            font-size: 0.92rem;
            color: var(--text-muted);
            margin-bottom: 0;
            line-height: 1.6;
        }

        @media (max-width: 768px) {
            .features-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
        }
        @media (min-width: 769px) and (max-width: 1024px) {
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            border-color: var(--accent);
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            padding: 18px 24px;
            font-weight: 600;
            font-size: 1.05rem;
            color: var(--text-dark);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            font-family: var(--font-main);
            transition: background var(--transition);
        }
        .faq-question:hover {
            background: rgba(26, 58, 107, 0.03);
        }
        .faq-question i {
            color: var(--accent);
            font-size: 1.1rem;
            transition: transform var(--transition);
            flex-shrink: 0;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }
        .faq-answer {
            padding: 0 24px 18px;
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.7;
            display: none;
        }
        .faq-item.open .faq-answer {
            display: block;
        }
        .faq-answer p {
            margin-bottom: 0;
        }

        @media (max-width: 768px) {
            .faq-question {
                padding: 14px 16px;
                font-size: 0.98rem;
            }
            .faq-answer {
                padding: 0 16px 14px;
                font-size: 0.9rem;
            }
        }

        /* ===== CTA ===== */
        .cta-block {
            text-align: center;
            padding: 60px 20px;
            border-radius: var(--radius-xl);
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .cta-block::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            opacity: 0.10;
            z-index: 0;
        }
        .cta-block>* {
            position: relative;
            z-index: 1;
        }
        .cta-block h3 {
            font-size: 2rem;
            color: #fff;
            font-weight: 800;
            margin-bottom: 12px;
        }
        .cta-block p {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 560px;
            margin: 0 auto 24px;
        }
        .cta-block .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: var(--accent);
            color: var(--primary-dark);
            font-weight: 700;
            font-size: 1.1rem;
            padding: 16px 40px;
            border-radius: 50px;
            box-shadow: var(--shadow-accent);
            transition: all var(--transition);
            border: none;
            cursor: pointer;
        }
        .cta-block .cta-btn:hover {
            background: var(--accent-light);
            transform: translateY(-3px);
            box-shadow: 0 10px 32px rgba(232, 168, 56, 0.45);
        }
        .cta-block .cta-btn i {
            font-size: 1rem;
        }

        @media (max-width: 768px) {
            .cta-block {
                padding: 40px 16px;
            }
            .cta-block h3 {
                font-size: 1.5rem;
            }
            .cta-block p {
                font-size: 0.98rem;
            }
            .cta-block .cta-btn {
                padding: 14px 28px;
                font-size: 1rem;
            }
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.75);
            padding: 56px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 36px;
        }
        .footer-brand .logo {
            color: #fff;
            font-size: 1.3rem;
            margin-bottom: 14px;
            display: inline-block;
        }
        .footer-brand .logo i {
            color: var(--accent);
        }
        .footer-brand p {
            font-size: 0.92rem;
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.7;
            max-width: 360px;
        }
        .footer-links h4 {
            color: #fff;
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .footer-links a {
            display: block;
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.92rem;
            padding: 5px 0;
            transition: all var(--transition);
        }
        .footer-links a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.10);
            padding: 20px 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.88rem;
            color: rgba(255, 255, 255, 0.5);
        }
        .footer-bottom a {
            color: var(--accent);
        }
        .footer-bottom a:hover {
            color: var(--accent-light);
        }

        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-brand p {
                max-width: 100%;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== 工具类 ===== */
        .text-center {
            text-align: center;
        }
        .mt-24 {
            margin-top: 24px;
        }
        .mb-24 {
            margin-bottom: 24px;
        }
        .gap-20 {
            gap: 20px;
        }

        /* ===== 分类标签 ===== */
        .tag-list {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
            margin: 20px 0 10px;
        }
        .tag {
            display: inline-block;
            padding: 6px 18px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 500;
            background: var(--bg-section-alt);
            color: var(--text-body);
            border: 1px solid var(--border-color);
            transition: all var(--transition);
        }
        .tag:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            transform: translateY(-2px);
        }
        .tag.accent {
            background: var(--accent);
            color: var(--primary-dark);
            border-color: var(--accent);
            font-weight: 600;
        }

        /* ===== 提示框 ===== */
        .tip-box {
            background: linear-gradient(135deg, #fef9e7, #fdf2d5);
            border-left: 4px solid var(--accent);
            border-radius: var(--radius-sm);
            padding: 20px 24px;
            margin: 20px 0;
        }
        .tip-box p {
            margin-bottom: 0;
            font-size: 0.95rem;
            color: var(--text-dark);
        }
        .tip-box i {
            color: var(--accent);
            margin-right: 8px;
        }

        /* ===== 响应式额外 ===== */
        @media (max-width: 520px) {
            .container {
                padding: 0 14px;
            }
            .section {
                padding: 36px 0;
            }
            .section-title {
                margin-bottom: 28px;
            }
            .section-title h2 {
                font-size: 1.3rem;
            }
            .step-card {
                padding: 20px 16px;
            }
            .feature-card {
                padding: 20px 16px;
            }
            .content-text h3 {
                font-size: 1.15rem;
            }
            .cta-block h3 {
                font-size: 1.25rem;
            }
        }

        /* ===== 打印 ===== */
        @media print {
            .site-header {
                position: static;
            }
            body {
                padding-top: 0;
            }
            .nav-toggle,
            .nav-cta {
                display: none !important;
            }
            .page-banner {
                padding: 30px 0;
                min-height: auto;
            }
            .cta-block {
                padding: 30px 0;
                background: var(--primary);
            }
            .site-footer {
                break-inside: avoid;
            }
        }

/* roulang page: article */
:root {
            --primary: #e63946;
            --primary-dark: #c1121f;
            --primary-light: #ff6b6b;
            --secondary: #1d3557;
            --secondary-light: #457b9d;
            --accent: #f4a261;
            --bg: #f8f9fa;
            --bg-alt: #ffffff;
            --bg-dark: #1a1a2e;
            --text: #2b2d42;
            --text-light: #6c757d;
            --text-white: #ffffff;
            --border: #dee2e6;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.12);
            --shadow-hover: 0 8px 30px rgba(230, 57, 70, 0.15);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --max-width: 1200px;
            --header-h: 72px;
        }

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

        html {
            scroll-behavior: smooth;
        }

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

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

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

        ul,
        ol {
            list-style: none;
        }

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

        /* Header */
        .site-header {
            background: var(--bg-alt);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 1000;
            height: var(--header-h);
            display: flex;
            align-items: center;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
        }

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

        .logo {
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.5px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .logo:hover {
            opacity: 0.85;
        }

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

        .nav-list a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text);
            transition: var(--transition);
            position: relative;
        }

        .nav-list a:hover {
            background: rgba(230, 57, 70, 0.06);
            color: var(--primary);
        }

        .nav-list a.active {
            background: var(--primary);
            color: #fff;
        }

        .nav-list a.active::after {
            display: none;
        }

        .nav-list a.nav-cta {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            padding: 8px 22px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .nav-list a.nav-cta:hover {
            transform: translateY(-1px);
            box-shadow: var(--shadow-hover);
        }

        .nav-list a.nav-cta i {
            font-size: 0.85rem;
        }

        .menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.6rem;
            color: var(--text);
            cursor: pointer;
            padding: 4px 8px;
        }

        /* Article Banner */
        .article-banner {
            background: linear-gradient(135deg, var(--secondary) 0%, var(--secondary-light) 100%);
            padding: 60px 0 50px;
            position: relative;
            overflow: hidden;
            min-height: 280px;
            display: flex;
            align-items: center;
        }

        .article-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.12;
            mix-blend-mode: overlay;
        }

        .article-banner .container {
            position: relative;
            z-index: 2;
            text-align: center;
            color: var(--text-white);
        }

        .article-banner .breadcrumb {
            font-size: 0.9rem;
            opacity: 0.85;
            margin-bottom: 16px;
            display: flex;
            justify-content: center;
            gap: 8px;
            flex-wrap: wrap;
        }

        .article-banner .breadcrumb a {
            color: rgba(255, 255, 255, 0.85);
        }
        .article-banner .breadcrumb a:hover {
            color: #fff;
        }
        .article-banner .breadcrumb span {
            opacity: 0.6;
        }

        .article-banner h1 {
            font-size: 2.4rem;
            font-weight: 800;
            line-height: 1.3;
            max-width: 800px;
            margin: 0 auto 14px;
            letter-spacing: -0.5px;
        }

        .article-banner .meta {
            display: flex;
            justify-content: center;
            gap: 24px;
            font-size: 0.95rem;
            opacity: 0.85;
            flex-wrap: wrap;
        }

        .article-banner .meta i {
            margin-right: 6px;
        }

        /* Article Main */
        .article-main {
            padding: 50px 0 70px;
        }

        .article-wrapper {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 40px;
            align-items: start;
        }

        .article-content {
            background: var(--bg-alt);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 40px 44px;
        }

        .article-content .lead {
            font-size: 1.15rem;
            color: var(--text-light);
            border-left: 4px solid var(--primary);
            padding-left: 20px;
            margin-bottom: 28px;
            line-height: 1.8;
        }

        .article-content h2 {
            font-size: 1.65rem;
            font-weight: 700;
            margin: 36px 0 16px;
            color: var(--secondary);
        }

        .article-content h3 {
            font-size: 1.3rem;
            font-weight: 600;
            margin: 28px 0 12px;
            color: var(--secondary);
        }

        .article-content p {
            margin-bottom: 18px;
            font-size: 1.05rem;
            line-height: 1.85;
            color: var(--text);
        }

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

        .article-content ul li,
        .article-content ol li {
            margin-bottom: 10px;
            font-size: 1.05rem;
            line-height: 1.7;
            list-style: disc;
        }

        .article-content ol li {
            list-style: decimal;
        }

        .article-content .highlight-box {
            background: linear-gradient(135deg, rgba(230, 57, 70, 0.04), rgba(69, 123, 157, 0.06));
            border-radius: var(--radius-sm);
            padding: 24px 28px;
            margin: 24px 0;
            border-left: 4px solid var(--primary);
        }

        .article-content .highlight-box p:last-child {
            margin-bottom: 0;
        }

        .article-content .tag-list {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin: 30px 0 0;
            padding-top: 24px;
            border-top: 1px solid var(--border);
        }

        .article-content .tag-list .tag {
            background: rgba(230, 57, 70, 0.08);
            color: var(--primary);
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 500;
            transition: var(--transition);
        }

        .article-content .tag-list .tag:hover {
            background: var(--primary);
            color: #fff;
        }

        /* Sidebar */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 28px;
        }

        .sidebar-card {
            background: var(--bg-alt);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 28px 24px;
        }

        .sidebar-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 18px;
            padding-bottom: 12px;
            border-bottom: 2px solid var(--primary);
            display: inline-block;
        }

        .sidebar-card .related-list li {
            padding: 12px 0;
            border-bottom: 1px solid var(--border);
        }

        .sidebar-card .related-list li:last-child {
            border-bottom: none;
        }

        .sidebar-card .related-list a {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            color: var(--text);
            font-size: 0.95rem;
            line-height: 1.4;
        }

        .sidebar-card .related-list a:hover {
            color: var(--primary);
        }

        .sidebar-card .related-list a i {
            color: var(--primary);
            font-size: 0.8rem;
            margin-top: 4px;
            flex-shrink: 0;
        }

        .sidebar-card .cta-box {
            text-align: center;
            padding: 10px 0 0;
        }

        .sidebar-card .cta-box p {
            font-size: 0.95rem;
            color: var(--text-light);
            margin-bottom: 16px;
        }

        .sidebar-card .btn-block {
            display: block;
            width: 100%;
            padding: 14px 20px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 1rem;
            text-align: center;
            transition: var(--transition);
        }

        .sidebar-card .btn-block:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
            color: #fff;
        }

        .sidebar-card .btn-block i {
            margin-right: 8px;
        }

        .sidebar-card .feature-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 12px;
        }

        .sidebar-card .feature-list .item {
            background: rgba(69, 123, 157, 0.06);
            border-radius: var(--radius-sm);
            padding: 14px 12px;
            text-align: center;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--secondary);
            transition: var(--transition);
        }

        .sidebar-card .feature-list .item:hover {
            background: rgba(230, 57, 70, 0.08);
            color: var(--primary);
        }

        .sidebar-card .feature-list .item i {
            display: block;
            font-size: 1.4rem;
            margin-bottom: 6px;
            color: var(--primary);
        }

        /* Not Found */
        .not-found-box {
            text-align: center;
            padding: 80px 20px;
            background: var(--bg-alt);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
        }

        .not-found-box i {
            font-size: 3.6rem;
            color: var(--primary-light);
            margin-bottom: 20px;
            display: block;
        }

        .not-found-box h2 {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 12px;
        }

        .not-found-box p {
            font-size: 1.1rem;
            color: var(--text-light);
            margin-bottom: 24px;
        }

        .not-found-box .btn-back {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 32px;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-sm);
            font-weight: 600;
            transition: var(--transition);
        }

        .not-found-box .btn-back:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
            color: #fff;
        }

        /* CTA Section */
        .article-cta {
            background: linear-gradient(135deg, var(--secondary) 0%, var(--secondary-light) 100%);
            padding: 60px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .article-cta::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center/cover no-repeat;
            opacity: 0.08;
            mix-blend-mode: overlay;
        }

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

        .article-cta h2 {
            font-size: 2rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 14px;
        }

        .article-cta p {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 600px;
            margin: 0 auto 28px;
        }

        .article-cta .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 16px 42px;
            background: #fff;
            color: var(--primary);
            border-radius: var(--radius-sm);
            font-weight: 700;
            font-size: 1.05rem;
            transition: var(--transition);
        }

        .article-cta .btn-cta:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 32px rgba(0, 0, 0, 0.25);
            color: var(--primary-dark);
        }

        /* Footer */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.8);
            padding: 52px 0 28px;
        }

        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 32px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .site-footer .footer-brand .logo {
            font-size: 1.4rem;
            display: inline-block;
            margin-bottom: 14px;
        }

        .site-footer .footer-brand p {
            font-size: 0.95rem;
            line-height: 1.7;
            opacity: 0.75;
            max-width: 420px;
        }

        .site-footer .footer-links h4 {
            color: #fff;
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: 16px;
        }

        .site-footer .footer-links a {
            display: block;
            color: rgba(255, 255, 255, 0.65);
            font-size: 0.92rem;
            padding: 5px 0;
            transition: var(--transition);
        }

        .site-footer .footer-links a:hover {
            color: #fff;
            padding-left: 4px;
        }

        .site-footer .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: 24px;
            font-size: 0.88rem;
            opacity: 0.6;
            flex-wrap: wrap;
            gap: 12px;
        }

        .site-footer .footer-bottom a {
            color: rgba(255, 255, 255, 0.7);
        }
        .site-footer .footer-bottom a:hover {
            color: #fff;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .article-wrapper {
                grid-template-columns: 1fr;
            }

            .article-banner h1 {
                font-size: 2rem;
            }

            .article-content {
                padding: 30px 28px;
            }

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

        @media (max-width: 768px) {
            .nav-list {
                display: none;
                flex-direction: column;
                background: var(--bg-alt);
                position: absolute;
                top: var(--header-h);
                left: 0;
                right: 0;
                padding: 16px 24px;
                box-shadow: var(--shadow-lg);
                border-bottom: 2px solid var(--primary);
                gap: 4px;
            }

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

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

            .nav-list a.nav-cta {
                margin-top: 8px;
                justify-content: center;
            }

            .menu-toggle {
                display: block;
            }

            .article-banner {
                padding: 40px 0 36px;
                min-height: 200px;
            }

            .article-banner h1 {
                font-size: 1.6rem;
            }

            .article-banner .meta {
                gap: 14px;
                font-size: 0.85rem;
            }

            .article-content {
                padding: 24px 18px;
            }

            .article-content h2 {
                font-size: 1.35rem;
            }
            .article-content h3 {
                font-size: 1.15rem;
            }
            .article-content p,
            .article-content li {
                font-size: 0.98rem;
            }

            .article-sidebar {
                margin-top: 10px;
            }

            .article-cta h2 {
                font-size: 1.5rem;
            }
            .article-cta p {
                font-size: 1rem;
            }
            .article-cta .btn-cta {
                padding: 14px 30px;
                font-size: 0.95rem;
            }

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

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

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

            .article-banner h1 {
                font-size: 1.3rem;
            }

            .article-content {
                padding: 18px 14px;
            }

            .sidebar-card {
                padding: 20px 16px;
            }

            .sidebar-card .feature-list {
                grid-template-columns: 1fr 1fr;
                gap: 8px;
            }

            .article-cta {
                padding: 40px 0;
            }
            .article-cta h2 {
                font-size: 1.25rem;
            }
        }