/* roulang page: index */
:root {
            --primary: #1e3a5f;
            --primary-light: #2d5a8e;
            --primary-dark: #0f1f33;
            --accent: #d4a843;
            --accent-light: #e8c86a;
            --accent-dark: #b8892e;
            --bg-dark: #0a0e1a;
            --bg-card: #111827;
            --bg-section: #0f172a;
            --text-primary: #f1f5f9;
            --text-secondary: #94a3b8;
            --text-muted: #64748b;
            --border-color: rgba(212, 168, 67, 0.15);
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
            --shadow-md: 0 4px 20px rgba(0,0,0,0.4);
            --shadow-lg: 0 10px 40px rgba(0,0,0,0.5);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        * { margin:0; padding:0; box-sizing:border-box; }
        html { scroll-behavior:smooth; }
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
            background: var(--bg-dark);
            color: var(--text-primary);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        a { color: inherit; text-decoration: none; transition: var(--transition); }
        img { max-width: 100%; height: auto; display: block; }
        button { cursor: pointer; font-family: inherit; }
        input, textarea, select { font-family: inherit; }

        .container { max-width: 1280px; margin: 0 auto; padding: 0 24px; }
        @media (max-width: 768px) { .container { padding: 0 16px; } }

        /* 导航 */
        .site-header {
            position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
            background: rgba(10, 14, 26, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(212, 168, 67, 0.08);
            transition: var(--transition);
        }
        .site-header.scrolled { background: rgba(10, 14, 26, 0.98); box-shadow: 0 4px 30px rgba(0,0,0,0.5); }
        .header-inner {
            display: grid;
            grid-template-columns: 1fr auto 1fr;
            align-items: center;
            height: 72px;
            gap: 16px;
        }
        .nav-left, .nav-right {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-left { justify-content: flex-start; }
        .nav-right { justify-content: flex-end; }
        .nav-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: 8px;
            transition: var(--transition);
            white-space: nowrap;
            position: relative;
        }
        .nav-link:hover { color: var(--accent); background: rgba(212, 168, 67, 0.08); }
        .nav-link.active { color: var(--accent); background: rgba(212, 168, 67, 0.12); }
        .nav-link.active::after {
            content: ''; position: absolute; bottom: 0; left: 50%; transform: translateX(-50%);
            width: 20px; height: 2px; background: var(--accent); border-radius: 1px;
        }
        .logo-wrap {
            display: flex; align-items: center; justify-content: center;
            font-size: 1.35rem; font-weight: 700; letter-spacing: 0.5px;
            color: var(--text-primary); white-space: nowrap;
            padding: 0 8px;
        }
        .logo-wrap .logo-star { color: var(--accent); margin-right: 4px; }
        .mobile-toggle {
            display: none; background: none; border: none; color: var(--text-primary);
            font-size: 1.5rem; padding: 8px; cursor: pointer;
        }
        @media (max-width: 900px) {
            .header-inner { grid-template-columns: 1fr auto 1fr; height: 64px; }
            .nav-left, .nav-right { display: none; }
            .mobile-toggle { display: block; }
            .nav-left { justify-self: start; }
            .nav-right { justify-self: end; }
            .logo-wrap { font-size: 1.15rem; }
        }
        .mobile-menu {
            display: none; position: fixed; top: 64px; left: 0; right: 0;
            background: rgba(10, 14, 26, 0.98); backdrop-filter: blur(16px);
            padding: 20px 24px; border-bottom: 1px solid rgba(212, 168, 67, 0.1);
            z-index: 999; flex-direction: column; gap: 8px;
        }
        .mobile-menu.open { display: flex; }
        .mobile-menu .nav-link { padding: 12px 16px; font-size: 1.05rem; border-radius: 8px; }
        .mobile-menu .nav-link:hover { background: rgba(212, 168, 67, 0.08); }

        /* Hero */
        .hero-section {
            position: relative; min-height: 100vh; display: flex; align-items: center;
            padding: 120px 0 80px; overflow: hidden;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
        }
        .hero-overlay {
            position: absolute; inset: 0;
            background: linear-gradient(135deg, rgba(10,14,26,0.88) 0%, rgba(15,23,42,0.75) 50%, rgba(10,14,26,0.88) 100%);
            z-index: 1;
        }
        .hero-stars {
            position: absolute; inset: 0; z-index: 1;
            background-image:
                radial-gradient(1px 1px at 20% 30%, rgba(255,255,255,0.6), transparent),
                radial-gradient(1px 1px at 40% 70%, rgba(255,255,255,0.4), transparent),
                radial-gradient(1.5px 1.5px at 60% 20%, rgba(255,255,255,0.7), transparent),
                radial-gradient(1px 1px at 80% 50%, rgba(255,255,255,0.5), transparent),
                radial-gradient(1px 1px at 10% 80%, rgba(255,255,255,0.3), transparent),
                radial-gradient(1.5px 1.5px at 70% 90%, rgba(255,255,255,0.6), transparent),
                radial-gradient(1px 1px at 90% 10%, rgba(255,255,255,0.4), transparent),
                radial-gradient(1px 1px at 50% 50%, rgba(255,255,255,0.5), transparent);
            background-size: 200% 200%;
            animation: twinkle 8s ease-in-out infinite alternate;
        }
        @keyframes twinkle { 0% { opacity: 0.5; } 100% { opacity: 1; } }
        .hero-content { position: relative; z-index: 2; text-align: center; max-width: 900px; margin: 0 auto; }
        .hero-badge {
            display: inline-flex; align-items: center; gap: 8px;
            padding: 8px 20px; border-radius: 50px;
            background: rgba(212, 168, 67, 0.12); border: 1px solid rgba(212, 168, 67, 0.2);
            color: var(--accent); font-size: 0.9rem; font-weight: 500; margin-bottom: 28px;
            backdrop-filter: blur(4px);
        }
        .hero-title {
            font-size: clamp(2.2rem, 5.5vw, 4.2rem); font-weight: 800; line-height: 1.15;
            margin-bottom: 24px; letter-spacing: -0.5px;
            background: linear-gradient(135deg, #f1f5f9 0%, var(--accent-light) 100%);
            -webkit-background-clip: text; -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-sub {
            font-size: clamp(1rem, 2vw, 1.3rem); color: var(--text-secondary);
            max-width: 720px; margin: 0 auto 36px; line-height: 1.8;
        }
        .hero-actions { display: flex; flex-wrap: wrap; gap: 16px; justify-content: center; }
        .btn-primary {
            display: inline-flex; align-items: center; gap: 10px;
            padding: 16px 36px; border-radius: 50px;
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
            color: #0a0e1a; font-weight: 600; font-size: 1.05rem;
            border: none; transition: var(--transition);
            box-shadow: 0 4px 20px rgba(212, 168, 67, 0.3);
        }
        .btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(212, 168, 67, 0.4); }
        .btn-secondary {
            display: inline-flex; align-items: center; gap: 10px;
            padding: 16px 36px; border-radius: 50px;
            background: rgba(255,255,255,0.06); border: 1px solid rgba(255,255,255,0.15);
            color: var(--text-primary); font-weight: 500; font-size: 1.05rem;
            transition: var(--transition); backdrop-filter: blur(4px);
        }
        .btn-secondary:hover { background: rgba(255,255,255,0.12); border-color: var(--accent); transform: translateY(-2px); }
        @media (max-width: 768px) {
            .hero-section { min-height: 90vh; padding: 100px 0 60px; }
            .hero-actions { flex-direction: column; align-items: center; }
            .btn-primary, .btn-secondary { width: 100%; max-width: 320px; justify-content: center; }
        }

        /* 通用板块 */
        .section { padding: 80px 0; }
        .section-alt { background: var(--bg-section); }
        .section-dark { background: var(--bg-dark); }
        .section-title {
            font-size: clamp(1.6rem, 3vw, 2.4rem); font-weight: 700; text-align: center;
            margin-bottom: 12px; letter-spacing: -0.3px;
        }
        .section-sub {
            font-size: 1.05rem; color: var(--text-secondary); text-align: center;
            max-width: 680px; margin: 0 auto 48px; line-height: 1.8;
        }
        .section-sub-left { text-align: left; margin: 0 0 40px; max-width: 680px; }

        /* 卡片 */
        .card {
            background: var(--bg-card); border-radius: var(--radius-md);
            border: 1px solid var(--border-color); padding: 32px 28px;
            transition: var(--transition); position: relative; overflow: hidden;
        }
        .card:hover { transform: translateY(-4px); border-color: rgba(212,168,67,0.25); box-shadow: var(--shadow-lg); }
        .card-icon {
            width: 56px; height: 56px; border-radius: 14px;
            display: flex; align-items: center; justify-content: center;
            font-size: 1.6rem; margin-bottom: 20px;
            background: rgba(212,168,67,0.1); color: var(--accent);
        }
        .card h3 { font-size: 1.2rem; font-weight: 600; margin-bottom: 12px; }
        .card p { color: var(--text-secondary); font-size: 0.95rem; line-height: 1.7; }

        /* 统计数据 */
        .stat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
        .stat-item { text-align: center; padding: 32px 16px; }
        .stat-number { font-size: 2.8rem; font-weight: 800; color: var(--accent); line-height: 1.2; margin-bottom: 8px; }
        .stat-label { color: var(--text-secondary); font-size: 1rem; }
        @media (max-width: 768px) { .stat-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; } }
        @media (max-width: 480px) { .stat-grid { grid-template-columns: 1fr 1fr; } }

        /* 特性网格 */
        .features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
        @media (max-width: 1024px) { .features-grid { grid-template-columns: repeat(2, 1fr); } }
        @media (max-width: 640px) { .features-grid { grid-template-columns: 1fr; } }

        /* 资讯列表 */
        .post-list { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
        .post-card {
            display: flex; gap: 20px; background: var(--bg-card);
            border-radius: var(--radius-md); border: 1px solid var(--border-color);
            padding: 20px; transition: var(--transition); cursor: pointer;
        }
        .post-card:hover { transform: translateY(-2px); border-color: rgba(212,168,67,0.2); box-shadow: var(--shadow-md); }
        .post-thumb {
            width: 120px; min-height: 90px; border-radius: var(--radius-sm);
            background: var(--primary-dark); flex-shrink: 0; overflow: hidden;
        }
        .post-thumb img { width: 100%; height: 100%; object-fit: cover; }
        .post-info { flex: 1; min-width: 0; }
        .post-info h4 { font-size: 1rem; font-weight: 600; margin-bottom: 6px; line-height: 1.5; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .post-info p { color: var(--text-secondary); font-size: 0.875rem; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .post-meta { display: flex; gap: 12px; font-size: 0.8rem; color: var(--text-muted); margin-top: 8px; }
        .post-meta .tag {
            padding: 2px 10px; border-radius: 50px; background: rgba(212,168,67,0.1);
            color: var(--accent); font-size: 0.75rem;
        }
        @media (max-width: 768px) { .post-list { grid-template-columns: 1fr; } .post-card { flex-direction: column; } .post-thumb { width: 100%; height: 160px; } }

        /* 流程步骤 */
        .steps-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; position: relative; }
        .step-item { text-align: center; padding: 32px 16px; position: relative; }
        .step-number {
            width: 56px; height: 56px; border-radius: 50%;
            display: flex; align-items: center; justify-content: center;
            margin: 0 auto 16px; font-size: 1.4rem; font-weight: 700;
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
            color: #0a0e1a; position: relative; z-index: 2;
        }
        .step-item h4 { font-size: 1.1rem; font-weight: 600; margin-bottom: 8px; }
        .step-item p { color: var(--text-secondary); font-size: 0.9rem; }
        .step-connector { display: none; }
        @media (max-width: 900px) { .steps-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; } }
        @media (max-width: 480px) { .steps-grid { grid-template-columns: 1fr; } }

        /* FAQ */
        .faq-list { max-width: 860px; 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-color); overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover { border-color: rgba(212,168,67,0.15); }
        .faq-question {
            display: flex; justify-content: space-between; align-items: center;
            padding: 20px 24px; cursor: pointer; font-weight: 500; font-size: 1.05rem;
            transition: var(--transition); user-select: none;
        }
        .faq-question:hover { color: var(--accent); }
        .faq-question .icon { transition: transform 0.3s ease; font-size: 1.2rem; color: var(--accent); }
        .faq-item.active .faq-question .icon { transform: rotate(180deg); }
        .faq-answer {
            max-height: 0; overflow: hidden; transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px; color: var(--text-secondary); line-height: 1.8; font-size: 0.95rem;
        }
        .faq-item.active .faq-answer { max-height: 400px; padding: 0 24px 20px; }

        /* CTA */
        .cta-section {
            position: relative; padding: 100px 0; overflow: hidden;
            background: url('/assets/images/backpic/back-2.webp') center center / cover no-repeat fixed;
        }
        .cta-overlay {
            position: absolute; inset: 0;
            background: linear-gradient(135deg, rgba(10,14,26,0.92) 0%, rgba(15,23,42,0.85) 100%);
            z-index: 1;
        }
        .cta-content { position: relative; z-index: 2; text-align: center; max-width: 700px; margin: 0 auto; }
        .cta-content h2 { font-size: clamp(1.8rem, 3vw, 2.6rem); font-weight: 700; margin-bottom: 16px; }
        .cta-content p { color: var(--text-secondary); font-size: 1.1rem; margin-bottom: 32px; line-height: 1.8; }
        @media (max-width: 768px) { .cta-section { background-attachment: scroll; padding: 60px 0; } }

        /* 页脚 */
        .site-footer {
            background: rgba(10,14,26,0.98); border-top: 1px solid rgba(212,168,67,0.06);
            padding: 60px 0 32px;
        }
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
        .footer-brand .logo-wrap { justify-content: flex-start; margin-bottom: 16px; }
        .footer-brand p { color: var(--text-secondary); font-size: 0.9rem; max-width: 360px; line-height: 1.8; }
        .footer-col h4 { font-size: 1rem; font-weight: 600; margin-bottom: 16px; color: var(--text-primary); }
        .footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 10px; }
        .footer-col ul a { color: var(--text-secondary); font-size: 0.9rem; }
        .footer-col ul a:hover { color: var(--accent); }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.05); padding-top: 24px;
            display: flex; justify-content: space-between; align-items: center;
            flex-wrap: wrap; gap: 12px; font-size: 0.85rem; color: var(--text-muted);
        }
        .footer-socials { display: flex; gap: 12px; }
        .footer-socials a {
            width: 40px; height: 40px; border-radius: 50%; display: flex; align-items: center; justify-content: center;
            background: rgba(255,255,255,0.05); color: var(--text-secondary); font-size: 1.1rem;
            transition: var(--transition);
        }
        .footer-socials a:hover { background: var(--accent); color: #0a0e1a; }
        @media (max-width: 900px) { .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; } }
        @media (max-width: 640px) { .footer-grid { grid-template-columns: 1fr; gap: 28px; } .footer-bottom { flex-direction: column; text-align: center; } }

        /* 图文板块 */
        .media-block { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
        .media-block.reverse { direction: rtl; }
        .media-block.reverse > * { direction: ltr; }
        .media-image { border-radius: var(--radius-md); overflow: hidden; box-shadow: var(--shadow-lg); }
        .media-image img { width: 100%; height: auto; }
        .media-text h2 { font-size: clamp(1.4rem, 2.5vw, 2rem); font-weight: 700; margin-bottom: 16px; }
        .media-text p { color: var(--text-secondary); font-size: 1rem; line-height: 1.8; margin-bottom: 16px; }
        .media-text ul { list-style: none; display: flex; flex-direction: column; gap: 12px; }
        .media-text ul li { display: flex; align-items: flex-start; gap: 12px; color: var(--text-secondary); font-size: 0.95rem; }
        .media-text ul li i { color: var(--accent); margin-top: 4px; flex-shrink: 0; }
        @media (max-width: 900px) { .media-block { grid-template-columns: 1fr; gap: 32px; } .media-block.reverse { direction: ltr; } }

        /* 标签 */
        .tag-group { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; }
        .tag {
            display: inline-flex; align-items: center; gap: 6px;
            padding: 6px 16px; border-radius: 50px; font-size: 0.85rem; font-weight: 500;
            background: rgba(212,168,67,0.08); color: var(--accent); border: 1px solid rgba(212,168,67,0.12);
            transition: var(--transition); cursor: default;
        }
        .tag:hover { background: rgba(212,168,67,0.15); }

        /* 动画 */
        .fade-up { opacity: 0; transform: translateY(30px); transition: opacity 0.6s ease, transform 0.6s ease; }
        .fade-up.visible { opacity: 1; transform: translateY(0); }

        /* 文章详情页占位 */
        .article-detail { max-width: 860px; margin: 120px auto 60px; padding: 0 24px; }
        .article-detail h1 { font-size: 2rem; font-weight: 700; margin-bottom: 16px; }
        .article-detail .meta { color: var(--text-muted); font-size: 0.9rem; margin-bottom: 32px; display: flex; gap: 16px; flex-wrap: wrap; }
        .article-detail .content { color: var(--text-secondary); font-size: 1.05rem; line-height: 1.9; }
        .article-detail .content p { margin-bottom: 20px; }

        /* 工具 */
        .text-accent { color: var(--accent); }
        .bg-accent { background: var(--accent); }
        .border-accent { border-color: rgba(212,168,67,0.3); }

        /* 响应式微调 */
        @media (max-width: 520px) {
            .section { padding: 48px 0; }
            .hero-title { font-size: 1.8rem; }
            .card { padding: 24px 18px; }
            .stat-number { font-size: 2rem; }
        }

        /* 占位空状态 */
        .empty-state { text-align: center; padding: 48px 24px; color: var(--text-muted); }
        .empty-state i { font-size: 3rem; margin-bottom: 16px; opacity: 0.4; }

/* roulang page: category1 */
:root {
            --primary: #1a1a2e;
            --primary-light: #16213e;
            --accent: #e8d44d;
            --accent-hover: #f0e068;
            --accent-light: rgba(232, 212, 77, 0.12);
            --star-glow: #f9e95c;
            --dark-bg: #0f0f1a;
            --card-bg: #1c1c32;
            --card-border: #2a2a4a;
            --text-main: #f0f0f5;
            --text-muted: #a0a0c0;
            --text-dark: #1a1a2e;
            --radius: 16px;
            --radius-sm: 10px;
            --shadow-card: 0 12px 40px rgba(0, 0, 0, 0.5);
            --shadow-glow: 0 0 30px rgba(232, 212, 77, 0.15);
            --font-sans: 'Inter', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

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

        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.25s ease;
        }

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

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

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

        @media (max-width: 640px) {
            .container {
                padding: 0 16px;
            }
        }

        /* Header & Nav */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            background: rgba(15, 15, 26, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(232, 212, 77, 0.08);
            transition: background 0.3s ease;
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 12px;
        }

        .nav-left {
            display: flex;
            align-items: center;
            gap: 4px;
            flex: 1;
        }

        .nav-left .nav-link {
            padding: 8px 16px;
            border-radius: 8px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-muted);
            transition: all 0.25s ease;
            white-space: nowrap;
        }

        .nav-left .nav-link i {
            margin-right: 6px;
            font-size: 0.8rem;
        }

        .nav-left .nav-link:hover {
            color: var(--accent);
            background: var(--accent-light);
        }

        .nav-left .nav-link.active {
            color: var(--accent);
            background: var(--accent-light);
            box-shadow: inset 0 -2px 0 var(--accent);
        }

        .logo-wrap {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--accent);
            letter-spacing: 0.5px;
            flex-shrink: 0;
        }

        .logo-star {
            font-size: 1.6rem;
            color: var(--star-glow);
            filter: drop-shadow(0 0 8px rgba(232, 212, 77, 0.4));
            animation: pulse-star 3s ease-in-out infinite;
        }

        @keyframes pulse-star {
            0%,
            100% {
                transform: scale(1);
                filter: drop-shadow(0 0 8px rgba(232, 212, 77, 0.4));
            }
            50% {
                transform: scale(1.08);
                filter: drop-shadow(0 0 18px rgba(232, 212, 77, 0.7));
            }
        }

        .nav-right {
            display: flex;
            align-items: center;
            gap: 10px;
            flex: 1;
            justify-content: flex-end;
        }

        .mobile-toggle {
            background: transparent;
            color: var(--text-main);
            font-size: 1.5rem;
            padding: 8px 12px;
            border-radius: 8px;
            cursor: pointer;
            transition: background 0.25s;
            display: none;
        }

        .mobile-toggle:hover {
            background: rgba(232, 212, 77, 0.1);
        }

        .mobile-menu {
            display: none;
            flex-direction: column;
            background: rgba(15, 15, 26, 0.98);
            border-top: 1px solid rgba(232, 212, 77, 0.08);
            padding: 12px 24px 20px;
            gap: 4px;
        }

        .mobile-menu .nav-link {
            padding: 12px 16px;
            border-radius: 8px;
            font-size: 1rem;
            font-weight: 500;
            color: var(--text-muted);
            transition: all 0.25s ease;
        }

        .mobile-menu .nav-link i {
            margin-right: 10px;
            width: 20px;
            text-align: center;
        }

        .mobile-menu .nav-link:hover {
            color: var(--accent);
            background: var(--accent-light);
        }

        .mobile-menu .nav-link.active {
            color: var(--accent);
            background: var(--accent-light);
        }

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

        @media (max-width: 860px) {
            .nav-left .nav-link {
                font-size: 0.8rem;
                padding: 6px 10px;
            }
            .nav-left .nav-link i {
                margin-right: 4px;
            }
            .logo-wrap {
                font-size: 1.1rem;
            }
            .logo-star {
                font-size: 1.3rem;
            }
        }

        @media (max-width: 720px) {
            .nav-left .nav-link {
                display: none;
            }
            .mobile-toggle {
                display: block;
            }
            .header-inner {
                height: 60px;
            }
            .logo-wrap {
                font-size: 1rem;
            }
            .logo-star {
                font-size: 1.2rem;
            }
        }

        /* Buttons */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 32px;
            background: linear-gradient(135deg, var(--accent), #d4c03a);
            color: var(--text-dark);
            font-weight: 700;
            font-size: 1rem;
            border-radius: 50px;
            transition: all 0.3s ease;
            box-shadow: 0 4px 20px rgba(232, 212, 77, 0.3);
            border: none;
            cursor: pointer;
        }

        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 30px rgba(232, 212, 77, 0.45);
            background: linear-gradient(135deg, var(--accent-hover), #e0cc50);
            color: var(--text-dark);
        }

        .btn-primary:active {
            transform: translateY(-1px);
            box-shadow: 0 4px 15px rgba(232, 212, 77, 0.3);
        }

        .btn-primary:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 4px;
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 12px 28px;
            background: transparent;
            color: var(--accent);
            font-weight: 600;
            font-size: 0.95rem;
            border-radius: 50px;
            border: 2px solid var(--accent);
            transition: all 0.3s ease;
            cursor: pointer;
        }

        .btn-secondary:hover {
            background: var(--accent-light);
            color: var(--accent-hover);
            border-color: var(--accent-hover);
            transform: translateY(-2px);
        }

        .btn-secondary:active {
            transform: translateY(0);
        }

        .btn-secondary:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 4px;
        }

        @media (max-width: 640px) {
            .btn-primary {
                padding: 12px 24px;
                font-size: 0.9rem;
            }
            .btn-secondary {
                padding: 10px 20px;
                font-size: 0.85rem;
            }
        }

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

        @media (max-width: 768px) {
            section {
                padding: 56px 0;
            }
        }

        .section-title {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--text-main);
            text-align: center;
            margin-bottom: 12px;
            letter-spacing: -0.5px;
        }

        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-muted);
            text-align: center;
            max-width: 680px;
            margin: 0 auto 50px;
            line-height: 1.7;
        }

        @media (max-width: 640px) {
            .section-title {
                font-size: 1.6rem;
            }
            .section-subtitle {
                font-size: 0.95rem;
                margin-bottom: 36px;
            }
        }

        /* Hero */
        .hero-section {
            position: relative;
            min-height: 92vh;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 120px 0 80px;
            background: linear-gradient(135deg, #0a0a15 0%, #12122a 40%, #1a1a3a 100%);
            overflow: hidden;
        }

        .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.2;
            mix-blend-mode: screen;
            z-index: 0;
        }

        .hero-overlay {
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(232, 212, 77, 0.04) 0%, transparent 70%),
                radial-gradient(ellipse at 70% 20%, rgba(100, 120, 255, 0.05) 0%, transparent 60%);
            z-index: 1;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 860px;
            padding: 0 24px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--accent-light);
            color: var(--accent);
            padding: 8px 20px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 28px;
            border: 1px solid rgba(232, 212, 77, 0.15);
            backdrop-filter: blur(4px);
        }

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

        .hero-title {
            font-size: 3.6rem;
            font-weight: 900;
            color: #fff;
            line-height: 1.15;
            margin-bottom: 24px;
            letter-spacing: -1px;
            text-shadow: 0 4px 30px rgba(0, 0, 0, 0.4);
        }

        .hero-title .highlight {
            color: var(--accent);
            text-shadow: 0 0 30px rgba(232, 212, 77, 0.3);
        }

        .hero-desc {
            font-size: 1.15rem;
            color: var(--text-muted);
            max-width: 640px;
            margin: 0 auto 36px;
            line-height: 1.8;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }

        @media (max-width: 768px) {
            .hero-section {
                min-height: 80vh;
                padding: 100px 0 60px;
            }
            .hero-title {
                font-size: 2.2rem;
            }
            .hero-desc {
                font-size: 1rem;
            }
            .hero-badge {
                font-size: 0.75rem;
                padding: 6px 16px;
            }
        }

        @media (max-width: 480px) {
            .hero-title {
                font-size: 1.7rem;
            }
            .hero-actions {
                flex-direction: column;
                align-items: center;
            }
        }

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

        .feature-card {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius);
            padding: 36px 28px 32px;
            transition: all 0.4s ease;
            text-align: center;
        }

        .feature-card:hover {
            transform: translateY(-6px);
            border-color: rgba(232, 212, 77, 0.25);
            box-shadow: var(--shadow-card), var(--shadow-glow);
        }

        .feature-icon {
            font-size: 2.4rem;
            color: var(--accent);
            margin-bottom: 20px;
            display: inline-block;
            filter: drop-shadow(0 0 12px rgba(232, 212, 77, 0.2));
        }

        .feature-card h3 {
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }

        .feature-card p {
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.7;
        }

        @media (max-width: 860px) {
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
        }

        @media (max-width: 540px) {
            .features-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .feature-card {
                padding: 28px 20px 24px;
            }
        }

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

        .scenario-card {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius);
            padding: 32px 20px 28px;
            text-align: center;
            transition: all 0.4s ease;
            position: relative;
            overflow: hidden;
        }

        .scenario-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--accent), #d4c03a);
            opacity: 0;
            transition: opacity 0.4s ease;
        }

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

        .scenario-card:hover {
            transform: translateY(-5px);
            border-color: rgba(232, 212, 77, 0.2);
            box-shadow: var(--shadow-card);
        }

        .scenario-icon {
            font-size: 2.2rem;
            color: var(--accent);
            margin-bottom: 16px;
            display: inline-block;
        }

        .scenario-card h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }

        .scenario-card p {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.6;
        }

        @media (max-width: 960px) {
            .scenarios-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 18px;
            }
        }

        @media (max-width: 480px) {
            .scenarios-grid {
                grid-template-columns: 1fr;
            }
        }

        /* Process */
        .process-section {
            background: linear-gradient(180deg, var(--dark-bg) 0%, #0a0a18 100%);
        }

        .process-steps {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 20px;
            position: relative;
        }

        .process-step {
            text-align: center;
            position: relative;
        }

        .step-number {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent), #d4c03a);
            color: var(--text-dark);
            font-size: 1.3rem;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
            box-shadow: 0 0 24px rgba(232, 212, 77, 0.25);
        }

        .process-step h5 {
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }

        .process-step p {
            color: var(--text-muted);
            font-size: 0.85rem;
            line-height: 1.6;
            max-width: 160px;
            margin: 0 auto;
        }

        .step-connector {
            display: none;
        }

        @media (max-width: 860px) {
            .process-steps {
                grid-template-columns: repeat(3, 1fr);
                gap: 28px 16px;
            }
        }

        @media (max-width: 540px) {
            .process-steps {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px 12px;
            }
            .step-number {
                width: 44px;
                height: 44px;
                font-size: 1rem;
            }
        }

        @media (max-width: 360px) {
            .process-steps {
                grid-template-columns: 1fr;
            }
        }

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

        .tool-card {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius);
            overflow: hidden;
            transition: all 0.4s ease;
        }

        .tool-card:hover {
            transform: translateY(-6px);
            border-color: rgba(232, 212, 77, 0.2);
            box-shadow: var(--shadow-card);
        }

        .tool-card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            border-radius: 0;
        }

        .tool-card-body {
            padding: 24px 22px 28px;
        }

        .tool-card-body h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }

        .tool-card-body p {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.7;
            margin-bottom: 16px;
        }

        .tool-tag {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 600;
            background: var(--accent-light);
            color: var(--accent);
            border: 1px solid rgba(232, 212, 77, 0.15);
            margin-right: 6px;
            margin-bottom: 4px;
        }

        @media (max-width: 860px) {
            .tools-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
        }

        @media (max-width: 540px) {
            .tools-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .tool-card-img {
                height: 160px;
            }
        }

        /* FAQ */
        .faq-section {
            background: #0a0a18;
        }

        .faq-list {
            max-width: 820px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .faq-item {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: border-color 0.3s ease;
        }

        .faq-item:hover {
            border-color: rgba(232, 212, 77, 0.15);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            background: transparent;
            color: var(--text-main);
            font-size: 1rem;
            font-weight: 600;
            text-align: left;
            cursor: pointer;
            border: none;
            transition: color 0.3s ease;
            gap: 16px;
        }

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

        .faq-question i {
            transition: transform 0.3s ease;
            color: var(--accent);
            flex-shrink: 0;
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 24px;
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.75;
        }

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

        @media (max-width: 640px) {
            .faq-question {
                padding: 14px 16px;
                font-size: 0.9rem;
            }
            .faq-answer {
                font-size: 0.85rem;
                padding: 0 16px;
            }
            .faq-item.open .faq-answer {
                padding: 0 16px 16px;
            }
        }

        /* CTA */
        .cta-section {
            background: linear-gradient(135deg, #0a0a15 0%, #12122a 50%, #0a0a15 100%);
            text-align: center;
            padding: 90px 0;
        }

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

        .cta-content h2 {
            font-size: 2.4rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
        }

        .cta-content p {
            color: var(--text-muted);
            font-size: 1.05rem;
            margin-bottom: 32px;
            line-height: 1.7;
        }

        @media (max-width: 640px) {
            .cta-section {
                padding: 60px 0;
            }
            .cta-content h2 {
                font-size: 1.6rem;
            }
            .cta-content p {
                font-size: 0.95rem;
            }
        }

        /* Footer */
        .site-footer {
            background: #080812;
            border-top: 1px solid rgba(232, 212, 77, 0.06);
            padding: 60px 0 30px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-brand .logo-wrap {
            margin-bottom: 16px;
        }

        .footer-brand p {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.7;
            max-width: 300px;
        }

        .footer-col h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 16px;
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

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

        .footer-col ul li a {
            color: var(--text-muted);
            font-size: 0.88rem;
            transition: color 0.25s ease;
            display: inline-flex;
            align-items: center;
        }

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

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
            padding-top: 28px;
            border-top: 1px solid rgba(232, 212, 77, 0.06);
            color: var(--text-muted);
            font-size: 0.85rem;
        }

        .footer-socials {
            display: flex;
            gap: 14px;
        }

        .footer-socials a {
            color: var(--text-muted);
            font-size: 1.1rem;
            transition: color 0.25s ease, transform 0.25s ease;
        }

        .footer-socials a:hover {
            color: var(--accent);
            transform: translateY(-2px);
        }

        @media (max-width: 860px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
            .footer-brand p {
                max-width: 100%;
            }
        }

        @media (max-width: 540px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* Section backgrounds */
        .bg-alt {
            background: #0a0a18;
        }

        .bg-darker {
            background: #060610;
        }

        /* Divider */
        .section-divider {
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(232, 212, 77, 0.08), transparent);
            border: none;
            margin: 0;
        }

        /* Scroll bar */
        ::-webkit-scrollbar {
            width: 6px;
        }

        ::-webkit-scrollbar-track {
            background: #0a0a15;
        }

        ::-webkit-scrollbar-thumb {
            background: #2a2a4a;
            border-radius: 3px;
        }

        ::-webkit-scrollbar-thumb:hover {
            background: #3a3a5a;
        }

        /* Focus visible */
        :focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }

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

        .animate-fade-in-up {
            animation: fadeInUp 0.8s ease forwards;
        }

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

        /* Star particles decoration */
        .star-particle {
            position: absolute;
            width: 3px;
            height: 3px;
            background: #fff;
            border-radius: 50%;
            opacity: 0.3;
            animation: twinkle 4s ease-in-out infinite;
        }

        @keyframes twinkle {
            0%,
            100% {
                opacity: 0.2;
                transform: scale(1);
            }
            50% {
                opacity: 0.8;
                transform: scale(1.3);
            }
        }

/* roulang page: article */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a237e;
            --primary-light: #283593;
            --primary-dark: #0d1b5e;
            --accent: #f9a825;
            --accent-light: #fdd835;
            --accent-dark: #f57f17;
            --bg-dark: #0b0e1a;
            --bg-card: #ffffff;
            --bg-section: #f5f7fc;
            --bg-footer: #0b0e1a;
            --text-primary: #1a1a2e;
            --text-body: #2d2d44;
            --text-muted: #6b7280;
            --text-light: #f8fafc;
            --border: #e2e8f0;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
            --shadow: 0 4px 20px rgba(0,0,0,0.08);
            --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
            --transition: 0.3s cubic-bezier(0.4,0,0.2,1);
            --font-sans: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
        }

        /* ===== Reset ===== */
        *,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
        html{scroll-behavior:smooth;}
        body{font-family:var(--font-sans);background:#ffffff;color:var(--text-body);line-height:1.7;-webkit-font-smoothing:antialiased;}
        a{color:inherit;text-decoration:none;transition:color var(--transition);}
        img{max-width:100%;height:auto;display:block;}
        ul,ol{list-style:none;}
        input,button,textarea{font:inherit;border:none;outline:none;}

        /* ===== Container ===== */
        .container{max-width:1200px;margin:0 auto;padding:0 20px;}

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed;top:0;left:0;width:100%;z-index:1000;
            background: rgba(11,14,26,0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255,255,255,0.06);
            transition: background var(--transition);
        }
        .site-header.scrolled{background:rgba(11,14,26,0.98);}
        .header-inner{display:flex;align-items:center;justify-content:space-between;height:70px;}
        .nav-left,.nav-right{display:flex;align-items:center;gap:6px;}
        .nav-link{
            display:inline-flex;align-items:center;gap:6px;
            padding:8px 18px;border-radius:var(--radius-sm);
            font-size:0.95rem;font-weight:500;color:rgba(255,255,255,0.75);
            transition:all var(--transition);letter-spacing:0.3px;
        }
        .nav-link i{font-size:0.9rem;opacity:0.7;}
        .nav-link:hover{color:#ffffff;background:rgba(255,255,255,0.08);}
        .nav-link.active,.nav-link.active:hover{color:#ffffff;background:var(--accent);color:var(--bg-dark);font-weight:600;}
        .nav-link.active i{opacity:1;}

        /* Logo */
        .logo-wrap{display:flex;align-items:center;gap:10px;cursor:default;}
        .logo-star{font-size:1.6rem;color:var(--accent);filter:drop-shadow(0 0 8px rgba(249,168,37,0.4));}
        .logo-wrap span:last-child{font-size:1.25rem;font-weight:700;color:#ffffff;letter-spacing:0.5px;white-space:nowrap;}

        .mobile-toggle{display:none;background:none;color:#ffffff;font-size:1.5rem;cursor:pointer;padding:8px 12px;border-radius:var(--radius-sm);}
        .mobile-toggle:hover{background:rgba(255,255,255,0.08);}

        /* Mobile Menu */
        .mobile-menu{
            display:none;flex-direction:column;gap:4px;
            padding:12px 20px 20px;background:rgba(11,14,26,0.98);
            border-top:1px solid rgba(255,255,255,0.06);
        }
        .mobile-menu .nav-link{padding:12px 16px;border-radius:var(--radius-sm);font-size:1rem;}
        .mobile-menu.open{display:flex;}

        /* ===== Breadcrumb ===== */
        .breadcrumb-wrap{
            padding:16px 0 0;
            font-size:0.88rem;color:var(--text-muted);
        }
        .breadcrumb-wrap a{color:var(--primary-light);font-weight:500;}
        .breadcrumb-wrap a:hover{color:var(--accent-dark);}
        .breadcrumb-wrap span{color:var(--text-muted);}

        /* ===== Article Banner ===== */
        .article-banner{
            position:relative;
            min-height:320px;
            display:flex;align-items:flex-end;
            padding:120px 0 50px;
            background-size:cover;background-position:center;background-repeat:no-repeat;
        }
        .article-banner::before{
            content:'';position:absolute;inset:0;
            background:linear-gradient(180deg, rgba(11,14,26,0.30) 0%, rgba(11,14,26,0.88) 100%);
        }
        .article-banner .container{position:relative;z-index:2;}
        .article-banner h1{
            font-size:2.6rem;font-weight:800;color:#ffffff;
            line-height:1.25;max-width:900px;text-shadow:0 2px 20px rgba(0,0,0,0.3);
            margin-bottom:16px;
        }
        .article-meta{
            display:flex;flex-wrap:wrap;gap:18px 28px;
            color:rgba(255,255,255,0.85);font-size:0.95rem;
            padding-bottom:6px;
        }
        .article-meta i{margin-right:6px;opacity:0.7;}
        .article-meta .badge-cat{
            display:inline-block;
            background:var(--accent);color:var(--bg-dark);
            padding:2px 16px;border-radius:20px;
            font-weight:600;font-size:0.85rem;
        }

        /* ===== Article Content ===== */
        .article-section{padding:50px 0 60px;background:#ffffff;}
        .article-body{
            max-width:860px;margin:0 auto;
            font-size:1.08rem;line-height:1.9;color:var(--text-body);
        }
        .article-body p{margin-bottom:1.4em;}
        .article-body h2,.article-body h3{margin-top:1.8em;margin-bottom:0.7em;font-weight:700;color:var(--text-primary);}
        .article-body h2{font-size:1.7rem;}
        .article-body h3{font-size:1.3rem;}
        .article-body ul,.article-body ol{padding-left:1.8em;margin-bottom:1.4em;}
        .article-body ul{list-style:disc;}
        .article-body ol{list-style:decimal;}
        .article-body li{margin-bottom:0.4em;}
        .article-body img{border-radius:var(--radius);margin:1.8em auto;box-shadow:var(--shadow);}
        .article-body blockquote{
            border-left:4px solid var(--accent);
            background:var(--bg-section);
            padding:16px 24px;margin:1.6em 0;
            border-radius:0 var(--radius-sm) var(--radius-sm) 0;
            font-style:italic;color:var(--text-muted);
        }
        .article-body a{color:var(--primary);text-decoration:underline;text-underline-offset:3px;}
        .article-body a:hover{color:var(--accent-dark);}
        .article-body code{
            background:#f1f5f9;padding:2px 10px;border-radius:4px;
            font-size:0.92em;color:var(--primary-dark);
        }
        .article-body pre{
            background:var(--bg-dark);color:#e2e8f0;
            padding:20px 24px;border-radius:var(--radius);
            overflow-x:auto;margin:1.6em 0;
            font-size:0.92rem;line-height:1.6;
        }

        /* Not Found */
        .not-found-box{
            text-align:center;padding:80px 20px;max-width:600px;margin:0 auto;
        }
        .not-found-box i{font-size:3.6rem;color:var(--accent);margin-bottom:20px;display:block;}
        .not-found-box h2{font-size:1.8rem;font-weight:700;color:var(--text-primary);margin-bottom:12px;}
        .not-found-box p{color:var(--text-muted);margin-bottom:28px;font-size:1.05rem;}
        .not-found-box .btn-home{
            display:inline-flex;align-items:center;gap:10px;
            background:var(--primary);color:#ffffff;
            padding:12px 36px;border-radius:var(--radius-sm);
            font-weight:600;transition:all var(--transition);
        }
        .not-found-box .btn-home:hover{background:var(--primary-light);transform:translateY(-2px);box-shadow:var(--shadow);}

        /* ===== Share Bar ===== */
        .share-bar{
            max-width:860px;margin:30px auto 0;
            display:flex;flex-wrap:wrap;align-items:center;gap:16px;
            padding-top:28px;border-top:1px solid var(--border);
        }
        .share-bar span{font-weight:600;color:var(--text-primary);font-size:0.95rem;}
        .share-btn{
            display:inline-flex;align-items:center;justify-content:center;
            width:42px;height:42px;border-radius:50%;
            background:var(--bg-section);color:var(--text-muted);
            font-size:1.1rem;transition:all var(--transition);
        }
        .share-btn:hover{background:var(--primary);color:#ffffff;transform:translateY(-2px);box-shadow:var(--shadow);}

        /* ===== Related Section ===== */
        .related-section{padding:60px 0;background:var(--bg-section);}
        .section-title{
            font-size:1.8rem;font-weight:700;color:var(--text-primary);
            text-align:center;margin-bottom:8px;
        }
        .section-sub{text-align:center;color:var(--text-muted);margin-bottom:40px;font-size:1.05rem;}
        .related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
        .related-card{
            background:#ffffff;border-radius:var(--radius);overflow:hidden;
            box-shadow:var(--shadow-sm);transition:all var(--transition);
            border:1px solid var(--border);
        }
        .related-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);}
        .related-card img{width:100%;height:180px;object-fit:cover;}
        .related-card-body{padding:18px 20px 22px;}
        .related-card-body h3{font-size:1.05rem;font-weight:700;color:var(--text-primary);margin-bottom:6px;line-height:1.4;}
        .related-card-body p{font-size:0.9rem;color:var(--text-muted);margin-bottom:12px;line-height:1.5;}
        .related-card-body .read-more{
            font-size:0.88rem;font-weight:600;color:var(--primary);
            display:inline-flex;align-items:center;gap:6px;
        }
        .related-card-body .read-more:hover{color:var(--accent-dark);}
        .related-card-body .read-more i{font-size:0.75rem;}

        /* ===== CTA Section ===== */
        .cta-section{
            padding:80px 0;background:var(--bg-dark);
            background-size:cover;background-position:center;position:relative;
        }
        .cta-section::before{
            content:'';position:absolute;inset:0;
            background:linear-gradient(135deg, rgba(11,14,26,0.92) 0%, rgba(26,35,126,0.70) 100%);
        }
        .cta-section .container{position:relative;z-index:2;text-align:center;}
        .cta-section h2{font-size:2.2rem;font-weight:700;color:#ffffff;margin-bottom:14px;}
        .cta-section p{font-size:1.1rem;color:rgba(255,255,255,0.75);max-width:700px;margin:0 auto 32px;}
        .cta-btns{display:flex;flex-wrap:wrap;justify-content:center;gap:16px;}
        .btn-primary{
            display:inline-flex;align-items:center;gap:10px;
            background:var(--accent);color:var(--bg-dark);
            padding:14px 38px;border-radius:var(--radius-sm);
            font-weight:700;font-size:1.05rem;
            transition:all var(--transition);border:2px solid transparent;
        }
        .btn-primary:hover{background:var(--accent-light);transform:translateY(-3px);box-shadow:0 10px 30px rgba(249,168,37,0.3);}
        .btn-outline-light{
            display:inline-flex;align-items:center;gap:10px;
            background:transparent;color:#ffffff;
            padding:14px 38px;border-radius:var(--radius-sm);
            font-weight:600;font-size:1.05rem;
            border:2px solid rgba(255,255,255,0.35);
            transition:all var(--transition);
        }
        .btn-outline-light:hover{background:rgba(255,255,255,0.1);border-color:#ffffff;transform:translateY(-3px);}

        /* ===== FAQ ===== */
        .faq-section{padding:60px 0;background:#ffffff;}
        .faq-grid{max-width:860px;margin:0 auto;display:flex;flex-direction:column;gap:14px;}
        .faq-item{
            background:var(--bg-section);border-radius:var(--radius);
            padding:20px 24px;border:1px solid var(--border);
            transition:all var(--transition);
        }
        .faq-item:hover{border-color:var(--accent);box-shadow:var(--shadow-sm);}
        .faq-question{
            display:flex;justify-content:space-between;align-items:center;
            font-weight:600;color:var(--text-primary);font-size:1.05rem;
            cursor:pointer;gap:12px;
        }
        .faq-question i{color:var(--accent);font-size:0.9rem;transition:transform var(--transition);flex-shrink:0;}
        .faq-item.open .faq-question i{transform:rotate(180deg);}
        .faq-answer{
            max-height:0;overflow:hidden;
            transition:max-height 0.4s ease, padding 0.3s ease;
            color:var(--text-body);font-size:0.98rem;line-height:1.7;
        }
        .faq-item.open .faq-answer{max-height:300px;padding-top:14px;}

        /* ===== Footer ===== */
        .site-footer{
            background:var(--bg-footer);color:rgba(255,255,255,0.75);
            padding:56px 0 0;
        }
        .footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,0.06);}
        .footer-brand .logo-wrap{margin-bottom:16px;}
        .footer-brand p{font-size:0.92rem;line-height:1.7;color:rgba(255,255,255,0.6);max-width:360px;}
        .footer-col h4{font-size:1rem;font-weight:600;color:#ffffff;margin-bottom:16px;letter-spacing:0.3px;}
        .footer-col ul li{margin-bottom:10px;}
        .footer-col ul li a{font-size:0.9rem;color:rgba(255,255,255,0.6);display:inline-flex;align-items:center;transition:all var(--transition);}
        .footer-col ul li a:hover{color:var(--accent);transform:translateX(4px);}
        .footer-bottom{
            display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;
            padding:24px 0;gap:12px;
            font-size:0.85rem;color:rgba(255,255,255,0.45);
        }
        .footer-socials{display:flex;gap:10px;}
        .footer-socials 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:1rem;transition:all var(--transition);
        }
        .footer-socials a:hover{background:var(--accent);color:var(--bg-dark);transform:translateY(-2px);}

        /* ===== Responsive ===== */
        @media (max-width:1024px){
            .article-banner h1{font-size:2.2rem;}
            .related-grid{grid-template-columns:repeat(2,1fr);}
            .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
        }
        @media (max-width:768px){
            .nav-left,.nav-right .nav-link:not(.mobile-toggle){display:none;}
            .mobile-toggle{display:inline-flex;}
            .header-inner{justify-content:space-between;}
            .logo-wrap span:last-child{font-size:1.05rem;}
            .article-banner{min-height:260px;padding:100px 0 36px;}
            .article-banner h1{font-size:1.7rem;}
            .article-meta{gap:12px 18px;font-size:0.85rem;}
            .article-body{font-size:1rem;}
            .related-grid{grid-template-columns:1fr;}
            .cta-section h2{font-size:1.6rem;}
            .cta-section p{font-size:0.98rem;}
            .footer-grid{grid-template-columns:1fr;gap:24px;}
            .footer-bottom{flex-direction:column;text-align:center;}
            .section-title{font-size:1.5rem;}
            .faq-question{font-size:0.98rem;}
        }
        @media (max-width:520px){
            .container{padding:0 14px;}
            .article-banner h1{font-size:1.4rem;}
            .article-banner{min-height:220px;padding:80px 0 28px;}
            .article-meta{flex-direction:column;gap:8px;}
            .breadcrumb-wrap{font-size:0.8rem;}
            .btn-primary,.btn-outline-light{padding:12px 24px;font-size:0.95rem;width:100%;justify-content:center;}
            .cta-btns{flex-direction:column;}
            .share-bar{flex-wrap:wrap;justify-content:center;}
            .logo-wrap span:last-child{font-size:0.95rem;}
        }