/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #0a0e27;
            --primary-light: #161b3d;
            --accent: #f0b830;
            --accent-hover: #d4a020;
            --accent-soft: rgba(240, 184, 48, 0.12);
            --bg-light: #f4f6fb;
            --bg-white: #ffffff;
            --text-dark: #0f111e;
            --text-body: #2d3142;
            --text-muted: #6b7280;
            --text-light: #9ca3af;
            --border-color: #e5e7eb;
            --border-light: #f0f2f5;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.05);
            --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.12);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
            --max-width: 1200px;
            --nav-height: 72px;
        }

        /* ===== 基础重置 ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body {
            font-family: var(--font-sans);
            background: var(--bg-light);
            color: var(--text-body);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a { color: var(--accent); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--accent-hover); }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-md); }
        button, input, textarea { font-family: inherit; font-size: inherit; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; color: var(--text-dark); font-weight: 700; }

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

        /* ===== 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            height: var(--nav-height);
            background: rgba(10, 14, 39, 0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            transition: var(--transition);
        }
        .site-header .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .site-header .logo a {
            font-size: 1.4rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: 1px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .site-header .logo a i {
            color: var(--accent);
            font-size: 1.6rem;
        }
        .site-header .logo a:hover { color: var(--accent); }
        .site-header .nav-links {
            display: flex;
            align-items: center;
            gap: 32px;
        }
        .site-header .nav-links a {
            color: rgba(255, 255, 255, 0.75);
            font-size: 0.95rem;
            font-weight: 500;
            padding: 6px 0;
            position: relative;
            letter-spacing: 0.3px;
        }
        .site-header .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent);
            transition: var(--transition);
        }
        .site-header .nav-links a:hover { color: #fff; }
        .site-header .nav-links a:hover::after { width: 100%; }
        .site-header .nav-links a.active { color: var(--accent); }
        .site-header .nav-links a.active::after { width: 100%; }
        .site-header .nav-cta a {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--accent);
            color: var(--primary);
            font-weight: 700;
            padding: 10px 24px;
            border-radius: 50px;
            font-size: 0.9rem;
            letter-spacing: 0.5px;
        }
        .site-header .nav-cta a:hover {
            background: var(--accent-hover);
            color: var(--primary);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(240, 184, 48, 0.35);
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 1.6rem;
            cursor: pointer;
            padding: 4px;
        }
        @media (max-width: 768px) {
            .nav-toggle { display: block; }
            .site-header .nav-links {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                width: 100%;
                flex-direction: column;
                background: rgba(10, 14, 39, 0.98);
                backdrop-filter: blur(16px);
                padding: 24px 20px;
                gap: 16px;
                transform: translateY(-120%);
                opacity: 0;
                transition: var(--transition);
                border-bottom: 1px solid rgba(255,255,255,0.06);
                z-index: 999;
            }
            .site-header .nav-links.open {
                transform: translateY(0);
                opacity: 1;
            }
            .site-header .nav-links a { font-size: 1.05rem; padding: 8px 0; }
            .site-header .nav-cta { display: none; }
            .site-header .nav-cta.mobile-show { display: block; margin-top: 8px; }
            .site-header .nav-cta.mobile-show a { width: 100%; justify-content: center; }
        }

        /* ===== Hero 分屏 ===== */
        .hero-split {
            min-height: 100vh;
            display: flex;
            align-items: stretch;
            margin-top: 0;
            padding-top: var(--nav-height);
            background: var(--primary);
            position: relative;
            overflow: hidden;
        }
        .hero-split .hero-left {
            flex: 1 1 50%;
            display: flex;
            flex-direction: column;
            justify-content: center;
            padding: 80px 60px 80px 60px;
            color: #fff;
            position: relative;
            z-index: 2;
            background: linear-gradient(135deg, #0a0e27 0%, #141a3a 100%);
        }
        .hero-split .hero-left .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(240, 184, 48, 0.15);
            border: 1px solid rgba(240, 184, 48, 0.25);
            padding: 6px 18px;
            border-radius: 50px;
            font-size: 0.85rem;
            color: var(--accent);
            font-weight: 600;
            margin-bottom: 24px;
            width: fit-content;
        }
        .hero-split .hero-left h1 {
            font-size: 3.2rem;
            font-weight: 900;
            color: #fff;
            line-height: 1.15;
            margin-bottom: 20px;
            letter-spacing: -0.5px;
        }
        .hero-split .hero-left h1 span { color: var(--accent); }
        .hero-split .hero-left p {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.7);
            max-width: 520px;
            margin-bottom: 36px;
            line-height: 1.8;
        }
        .hero-split .hero-left .hero-buttons {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
        }
        .hero-split .hero-left .hero-buttons .btn-primary {
            background: var(--accent);
            color: var(--primary);
            padding: 14px 36px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1rem;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            transition: var(--transition);
        }
        .hero-split .hero-left .hero-buttons .btn-primary:hover {
            background: var(--accent-hover);
            transform: translateY(-3px);
            box-shadow: 0 12px 36px rgba(240, 184, 48, 0.3);
        }
        .hero-split .hero-left .hero-buttons .btn-outline {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.25);
            padding: 12px 32px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition);
        }
        .hero-split .hero-left .hero-buttons .btn-outline:hover {
            border-color: var(--accent);
            color: var(--accent);
            transform: translateY(-3px);
        }
        .hero-split .hero-right {
            flex: 1 1 50%;
            background: var(--primary-light);
            position: relative;
            overflow: hidden;
            min-height: 400px;
        }
        .hero-split .hero-right .hero-bg {
            width: 100%;
            height: 100%;
            object-fit: cover;
            opacity: 0.85;
            transition: var(--transition);
        }
        .hero-split .hero-right::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(10,14,39,0.4) 0%, transparent 60%);
        }
        .hero-split .hero-right .hero-overlay-content {
            position: absolute;
            bottom: 40px;
            right: 40px;
            z-index: 3;
            text-align: right;
            color: #fff;
        }
        .hero-split .hero-right .hero-overlay-content .stat-number {
            font-size: 2.8rem;
            font-weight: 900;
            color: var(--accent);
            line-height: 1;
        }
        .hero-split .hero-right .hero-overlay-content .stat-label {
            font-size: 0.95rem;
            opacity: 0.8;
            margin-top: 4px;
        }
        @media (max-width: 1024px) {
            .hero-split .hero-left { padding: 60px 40px 60px 40px; }
            .hero-split .hero-left h1 { font-size: 2.6rem; }
        }
        @media (max-width: 768px) {
            .hero-split { flex-direction: column; min-height: auto; }
            .hero-split .hero-left { flex: none; padding: 60px 24px 48px; }
            .hero-split .hero-left h1 { font-size: 2.2rem; }
            .hero-split .hero-left p { font-size: 1rem; }
            .hero-split .hero-right { flex: none; min-height: 300px; }
            .hero-split .hero-right .hero-overlay-content { bottom: 24px; right: 24px; }
            .hero-split .hero-right .hero-overlay-content .stat-number { font-size: 2rem; }
        }
        @media (max-width: 520px) {
            .hero-split .hero-left h1 { font-size: 1.8rem; }
            .hero-split .hero-left .hero-buttons { flex-direction: column; }
            .hero-split .hero-left .hero-buttons .btn-primary,
            .hero-split .hero-left .hero-buttons .btn-outline { width: 100%; justify-content: center; }
        }

        /* ===== 通用板块 ===== */
        .section {
            padding: 80px 0;
        }
        .section-alt {
            background: var(--bg-white);
        }
        .section-dark {
            background: var(--primary);
            color: #fff;
        }
        .section-dark h2,
        .section-dark h3,
        .section-dark .section-subtitle { color: #fff; }
        .section-dark .section-subtitle { color: rgba(255,255,255,0.6); }
        .section-header {
            text-align: center;
            margin-bottom: 52px;
        }
        .section-header h2 {
            font-size: 2.2rem;
            font-weight: 800;
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }
        .section-header .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 600px;
            margin: 0 auto;
        }
        .section-header .section-badge {
            display: inline-block;
            background: var(--accent-soft);
            color: var(--accent);
            font-weight: 600;
            font-size: 0.8rem;
            padding: 4px 16px;
            border-radius: 50px;
            margin-bottom: 12px;
            border: 1px solid rgba(240, 184, 48, 0.15);
        }
        @media (max-width: 768px) {
            .section { padding: 56px 0; }
            .section-header h2 { font-size: 1.7rem; }
            .section-header { margin-bottom: 36px; }
        }

        /* ===== 平台简介 ===== */
        .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }
        .intro-grid .intro-image img {
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-lg);
            width: 100%;
        }
        .intro-grid .intro-content h3 {
            font-size: 1.8rem;
            margin-bottom: 16px;
        }
        .intro-grid .intro-content p {
            font-size: 1rem;
            color: var(--text-muted);
            margin-bottom: 20px;
        }
        .intro-grid .intro-content .intro-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 20px;
        }
        .intro-grid .intro-content .intro-tags span {
            background: var(--accent-soft);
            color: var(--accent);
            padding: 6px 18px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 600;
            border: 1px solid rgba(240, 184, 48, 0.1);
        }
        @media (max-width: 768px) {
            .intro-grid { grid-template-columns: 1fr; gap: 32px; }
            .intro-grid .intro-content h3 { font-size: 1.5rem; }
        }

        /* ===== 分类入口 ===== */
        .category-cards {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
        }
        .category-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border: 1px solid var(--border-color);
            display: flex;
            flex-direction: column;
        }
        .category-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: var(--accent);
        }
        .category-card .card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
        }
        .category-card .card-body {
            padding: 28px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .category-card .card-body h3 {
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .category-card .card-body p {
            color: var(--text-muted);
            font-size: 0.95rem;
            margin-bottom: 16px;
            flex: 1;
        }
        .category-card .card-body .card-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--accent);
            font-weight: 600;
            font-size: 0.9rem;
        }
        .category-card .card-body .card-link i { transition: var(--transition); }
        .category-card .card-body .card-link:hover i { transform: translateX(4px); }
        @media (max-width: 768px) {
            .category-cards { grid-template-columns: 1fr; gap: 24px; }
        }

        /* ===== 最新资讯 (CMS列表) ===== */
        .news-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }
        .news-item {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: 24px 28px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .news-item:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-md);
            border-color: var(--accent);
        }
        .news-item .news-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.8rem;
            color: var(--text-light);
            margin-bottom: 8px;
        }
        .news-item .news-meta .news-cat {
            background: var(--accent-soft);
            color: var(--accent);
            padding: 2px 12px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.75rem;
        }
        .news-item h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .news-item h4 a { color: var(--text-dark); }
        .news-item h4 a:hover { color: var(--accent); }
        .news-item p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.6;
            flex: 1;
        }
        .news-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: 48px 24px;
            color: var(--text-muted);
            font-size: 1rem;
            background: var(--bg-white);
            border-radius: var(--radius-md);
            border: 1px dashed var(--border-color);
        }
        @media (max-width: 768px) {
            .news-list { grid-template-columns: 1fr; }
        }

        /* ===== 特色亮点 / 数据指标 ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .feature-item {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-md);
            padding: 32px 20px;
            text-align: center;
            transition: var(--transition);
        }
        .feature-item:hover {
            background: rgba(255, 255, 255, 0.1);
            transform: translateY(-4px);
            border-color: var(--accent);
        }
        .feature-item .feature-icon {
            font-size: 2.2rem;
            color: var(--accent);
            margin-bottom: 16px;
        }
        .feature-item .feature-number {
            font-size: 2rem;
            font-weight: 900;
            color: #fff;
            line-height: 1.2;
        }
        .feature-item .feature-number span { color: var(--accent); }
        .feature-item .feature-label {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.6);
            margin-top: 6px;
        }
        @media (max-width: 1024px) {
            .features-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 520px) {
            .features-grid { grid-template-columns: 1fr; }
        }

        /* ===== 使用流程 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
            counter-reset: step;
        }
        .step-item {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 32px 24px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            position: relative;
            transition: var(--transition);
            text-align: center;
        }
        .step-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .step-item::before {
            counter-increment: step;
            content: "0" counter(step);
            position: absolute;
            top: 16px;
            left: 20px;
            font-size: 2.6rem;
            font-weight: 900;
            color: rgba(240, 184, 48, 0.15);
            line-height: 1;
        }
        .step-item .step-icon {
            font-size: 2rem;
            color: var(--accent);
            margin-bottom: 16px;
        }
        .step-item h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .step-item p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.6;
        }
        @media (max-width: 768px) {
            .steps-grid { grid-template-columns: 1fr; gap: 20px; }
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover { border-color: var(--accent); }
        .faq-item .faq-question {
            padding: 18px 24px;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-dark);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
        }
        .faq-item .faq-question i {
            color: var(--accent);
            transition: var(--transition);
            font-size: 1.1rem;
            flex-shrink: 0;
        }
        .faq-item .faq-question[aria-expanded="true"] i {
            transform: rotate(180deg);
        }
        .faq-item .faq-answer {
            padding: 0 24px 18px;
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.7;
            display: none;
        }
        .faq-item .faq-answer.open { display: block; }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, #0a0e27 0%, #1a2045 100%);
            padding: 80px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(240,184,48,0.08) 0%, transparent 70%);
            border-radius: 50%;
        }
        .cta-section h2 {
            font-size: 2.2rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.65);
            font-size: 1.05rem;
            max-width: 560px;
            margin: 0 auto 32px;
        }
        .cta-section .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            background: var(--accent);
            color: var(--primary);
            padding: 16px 44px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1.05rem;
            transition: var(--transition);
        }
        .cta-section .cta-btn:hover {
            background: var(--accent-hover);
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(240, 184, 48, 0.3);
        }
        @media (max-width: 768px) {
            .cta-section { padding: 56px 0; }
            .cta-section h2 { font-size: 1.7rem; }
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #070a1a;
            color: rgba(255, 255, 255, 0.6);
            padding: 48px 0 32px;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }
        .site-footer .footer-brand h4 {
            color: #fff;
            font-size: 1.2rem;
            font-weight: 800;
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .site-footer .footer-brand h4 i { color: var(--accent); }
        .site-footer .footer-brand p {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.5);
            max-width: 300px;
            line-height: 1.7;
        }
        .site-footer .footer-col h5 {
            color: #fff;
            font-size: 0.95rem;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .site-footer .footer-col ul li { margin-bottom: 10px; }
        .site-footer .footer-col ul li a {
            color: rgba(255, 255, 255, 0.5);
            font-size: 0.9rem;
        }
        .site-footer .footer-col ul li a:hover { color: var(--accent); }
        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.4);
        }
        .site-footer .footer-bottom a { color: rgba(255, 255, 255, 0.4); }
        .site-footer .footer-bottom a:hover { color: var(--accent); }
        .site-footer .footer-bottom .footer-links { display: flex; gap: 20px; }
        @media (max-width: 768px) {
            .site-footer .footer-grid { grid-template-columns: 1fr 1fr; gap: 24px; }
        }
        @media (max-width: 520px) {
            .site-footer .footer-grid { grid-template-columns: 1fr; }
            .site-footer .footer-bottom { flex-direction: column; text-align: center; }
        }

        /* ===== 工具类 ===== */
        .text-accent { color: var(--accent); }
        .mb-16 { margin-bottom: 16px; }
        .mb-24 { margin-bottom: 24px; }
        .mb-32 { margin-bottom: 32px; }
        .mt-16 { margin-top: 16px; }
        .mt-24 { margin-top: 24px; }

/* roulang page: article */
/* ===== 设计变量 ===== */
        :root {
            --primary: #c0392b;
            --primary-dark: #a93226;
            --primary-light: #e74c3c;
            --secondary: #2c3e50;
            --secondary-light: #34495e;
            --accent: #f39c12;
            --accent-light: #f1c40f;
            --bg-dark: #0f0f1a;
            --bg-darker: #0a0a14;
            --bg-card: #1a1a2e;
            --bg-card-hover: #222240;
            --text-primary: #f0f0f5;
            --text-secondary: #b0b0c8;
            --text-muted: #6c6c8a;
            --border-color: #2a2a4a;
            --border-light: #3a3a5a;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.3);
            --shadow-md: 0 8px 30px rgba(0,0,0,0.4);
            --shadow-lg: 0 16px 50px rgba(0,0,0,0.5);
            --shadow-glow: 0 0 30px rgba(192,57,43,0.15);
            --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            --font-heading: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --container-width: 1200px;
            --header-height: 72px;
        }

        /* ===== 基础重置 ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; font-size: 16px; }
        body {
            font-family: var(--font-body);
            background: var(--bg-dark);
            color: var(--text-primary);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        a { color: var(--primary-light); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--accent); text-decoration: none; }
        a:focus-visible { outline: 2px solid var(--accent); outline-offset: 4px; border-radius: 4px; }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-md); }
        ul, ol { list-style: none; }
        button, input, textarea { font-family: inherit; font-size: inherit; border: none; outline: none; background: none; color: inherit; }
        button { cursor: pointer; }
        h1, h2, h3, h4, h5, h6 { font-family: var(--font-heading); line-height: 1.3; color: var(--text-primary); font-weight: 700; }
        h1 { font-size: 2.4rem; letter-spacing: -0.02em; }
        h2 { font-size: 2rem; letter-spacing: -0.01em; }
        h3 { font-size: 1.5rem; }
        h4 { font-size: 1.2rem; }
        p { margin-bottom: 1rem; color: var(--text-secondary); }
        .container-custom {
            max-width: var(--container-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .section-padding { padding: 80px 0; }
        .section-title {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 0.5rem;
            background: linear-gradient(135deg, var(--text-primary) 0%, var(--primary-light) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 640px;
            margin: 0 auto 3rem auto;
            text-align: center;
        }
        .text-center { text-align: center; }
        .mb-1 { margin-bottom: 1rem; }
        .mb-2 { margin-bottom: 2rem; }
        .mb-3 { margin-bottom: 3rem; }

        /* ===== 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(15,15,26,0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-color);
            height: var(--header-height);
            transition: var(--transition);
        }
        .site-header.scrolled { background: rgba(10,10,20,0.98); box-shadow: var(--shadow-md); }
        .header-inner {
            max-width: var(--container-width);
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .logo a {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: -0.5px;
            transition: var(--transition);
        }
        .logo a i { color: var(--primary-light); font-size: 1.5rem; }
        .logo a:hover { color: var(--primary-light); }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-links a {
            padding: 8px 18px;
            border-radius: 30px;
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: var(--transition);
            position: relative;
        }
        .nav-links a:hover { color: var(--text-primary); background: rgba(255,255,255,0.06); }
        .nav-links a.active {
            color: #fff;
            background: var(--primary);
            box-shadow: 0 0 20px rgba(192,57,43,0.25);
        }
        .nav-links a.active:hover { background: var(--primary-dark); }
        .nav-cta a {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 26px;
            border-radius: 30px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            font-weight: 600;
            font-size: 0.92rem;
            transition: var(--transition);
            box-shadow: 0 4px 20px rgba(192,57,43,0.3);
        }
        .nav-cta a:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(192,57,43,0.4); color: #fff; }
        .nav-cta.mobile-show { display: none; }
        .nav-toggle {
            display: none;
            width: 44px;
            height: 44px;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: var(--bg-card);
            color: var(--text-primary);
            font-size: 1.3rem;
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .nav-toggle:hover { background: var(--bg-card-hover); }

        /* ===== 文章页 Hero ===== */
        .article-hero {
            padding: 140px 0 60px 0;
            background: linear-gradient(135deg, var(--bg-darker) 0%, var(--bg-dark) 50%, rgba(192,57,43,0.08) 100%);
            position: relative;
            overflow: hidden;
            border-bottom: 1px solid var(--border-color);
        }
        .article-hero::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(192,57,43,0.06) 0%, transparent 70%);
            pointer-events: none;
        }
        .article-hero .container-custom {
            position: relative;
            z-index: 2;
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
            margin-bottom: 24px;
        }
        .article-meta .badge {
            display: inline-block;
            padding: 5px 16px;
            border-radius: 30px;
            font-size: 0.8rem;
            font-weight: 600;
            background: var(--primary);
            color: #fff;
            letter-spacing: 0.3px;
        }
        .article-meta .badge-secondary {
            background: var(--secondary);
            color: var(--text-secondary);
        }
        .article-meta .date {
            font-size: 0.85rem;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .article-meta .date i { font-size: 0.8rem; }
        .article-hero h1 {
            font-size: 2.6rem;
            font-weight: 800;
            line-height: 1.25;
            max-width: 860px;
            margin-bottom: 20px;
            background: linear-gradient(135deg, #fff 0%, var(--primary-light) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .article-hero .lead {
            font-size: 1.1rem;
            color: var(--text-secondary);
            max-width: 720px;
            line-height: 1.8;
        }

        /* ===== 文章内容 ===== */
        .article-content-wrap {
            padding: 60px 0 80px 0;
            background: var(--bg-dark);
        }
        .article-layout {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 50px;
            align-items: start;
        }
        .article-body {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 48px 44px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
        }
        .article-body p {
            font-size: 1.05rem;
            line-height: 1.9;
            color: var(--text-secondary);
            margin-bottom: 1.2rem;
        }
        .article-body h2 {
            font-size: 1.6rem;
            margin-top: 2.2rem;
            margin-bottom: 1rem;
            color: var(--text-primary);
            border-left: 4px solid var(--primary);
            padding-left: 16px;
        }
        .article-body h3 {
            font-size: 1.25rem;
            margin-top: 1.8rem;
            margin-bottom: 0.8rem;
            color: var(--text-primary);
        }
        .article-body ul, .article-body ol {
            padding-left: 24px;
            margin-bottom: 1.2rem;
            color: var(--text-secondary);
        }
        .article-body ul li, .article-body ol li {
            margin-bottom: 0.5rem;
            list-style: disc;
        }
        .article-body ol li { list-style: decimal; }
        .article-body img {
            border-radius: var(--radius-md);
            margin: 2rem 0;
            box-shadow: var(--shadow-md);
            width: 100%;
        }
        .article-body blockquote {
            border-left: 4px solid var(--primary);
            padding: 20px 24px;
            margin: 2rem 0;
            background: rgba(192,57,43,0.06);
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            color: var(--text-secondary);
            font-style: italic;
        }
        .article-body blockquote p { margin-bottom: 0; }
        .article-body a { color: var(--primary-light); text-decoration: underline; text-underline-offset: 3px; }
        .article-body a:hover { color: var(--accent); }

        /* ===== 侧边栏 ===== */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 30px;
        }
        .sidebar-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
        }
        .sidebar-card h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text-primary);
        }
        .sidebar-card h4 i { color: var(--primary-light); }
        .sidebar-card ul li { margin-bottom: 10px; }
        .sidebar-card ul li a {
            color: var(--text-secondary);
            font-size: 0.92rem;
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 6px 0;
            transition: var(--transition);
        }
        .sidebar-card ul li a::before {
            content: '\f105';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 0.75rem;
            color: var(--primary-light);
            opacity: 0.6;
        }
        .sidebar-card ul li a:hover { color: var(--primary-light); padding-left: 4px; }
        .sidebar-cta {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            padding: 32px 24px;
            text-align: center;
            border: none;
        }
        .sidebar-cta h4 { color: #fff; justify-content: center; }
        .sidebar-cta p { color: rgba(255,255,255,0.8); font-size: 0.92rem; margin-bottom: 20px; }
        .sidebar-cta .btn-sidebar {
            display: inline-block;
            padding: 12px 32px;
            border-radius: 30px;
            background: #fff;
            color: var(--primary);
            font-weight: 700;
            font-size: 0.95rem;
            transition: var(--transition);
            box-shadow: 0 4px 20px rgba(0,0,0,0.2);
        }
        .sidebar-cta .btn-sidebar:hover { transform: translateY(-3px); box-shadow: 0 8px 30px rgba(0,0,0,0.3); color: var(--primary-dark); }

        /* ===== 文章导航 ===== */
        .article-nav {
            display: flex;
            justify-content: space-between;
            gap: 20px;
            margin-top: 50px;
            padding-top: 30px;
            border-top: 1px solid var(--border-color);
        }
        .article-nav a {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 14px 24px;
            border-radius: var(--radius-md);
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            color: var(--text-secondary);
            font-size: 0.92rem;
            transition: var(--transition);
            flex: 1;
            max-width: 48%;
        }
        .article-nav a:hover { background: var(--bg-card-hover); color: var(--text-primary); border-color: var(--primary); }
        .article-nav .nav-next { justify-content: flex-end; text-align: right; }

        /* ===== 相关文章 ===== */
        .related-section {
            padding: 60px 0 80px 0;
            background: var(--bg-darker);
            border-top: 1px solid var(--border-color);
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-top: 32px;
        }
        .related-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 24px;
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .related-card:hover { border-color: var(--primary); transform: translateY(-4px); box-shadow: var(--shadow-glow); }
        .related-card .tag {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 20px;
            background: rgba(192,57,43,0.15);
            color: var(--primary-light);
            margin-bottom: 10px;
        }
        .related-card h5 { font-size: 1rem; margin-bottom: 8px; }
        .related-card h5 a { color: var(--text-primary); }
        .related-card h5 a:hover { color: var(--primary-light); }
        .related-card p { font-size: 0.85rem; color: var(--text-muted); margin-bottom: 0; }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-darker);
            border-top: 1px solid var(--border-color);
            padding: 60px 0 30px 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand h4 {
            font-size: 1.3rem;
            font-weight: 800;
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 14px;
            color: var(--text-primary);
        }
        .footer-brand h4 i { color: var(--primary-light); }
        .footer-brand p { font-size: 0.9rem; color: var(--text-muted); max-width: 300px; }
        .footer-col h5 {
            font-size: 0.95rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text-primary);
            letter-spacing: 0.3px;
        }
        .footer-col ul li { margin-bottom: 10px; }
        .footer-col ul li a {
            color: var(--text-muted);
            font-size: 0.88rem;
            transition: var(--transition);
        }
        .footer-col ul li a:hover { color: var(--primary-light); padding-left: 4px; }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: 24px;
            border-top: 1px solid var(--border-color);
            font-size: 0.85rem;
            color: var(--text-muted);
        }
        .footer-links { display: flex; gap: 20px; }
        .footer-links a { color: var(--text-muted); font-size: 0.85rem; }
        .footer-links a:hover { color: var(--primary-light); }

        /* ===== 内容未找到 ===== */
        .not-found-box {
            text-align: center;
            padding: 80px 24px;
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-color);
        }
        .not-found-box i { font-size: 3rem; color: var(--text-muted); margin-bottom: 20px; }
        .not-found-box h2 { font-size: 1.6rem; margin-bottom: 12px; }
        .not-found-box p { color: var(--text-muted); margin-bottom: 24px; }
        .not-found-box a.btn-back {
            display: inline-block;
            padding: 12px 32px;
            border-radius: 30px;
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            transition: var(--transition);
        }
        .not-found-box a.btn-back:hover { background: var(--primary-dark); transform: translateY(-2px); }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .article-layout { grid-template-columns: 1fr; }
            .article-sidebar { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
            .related-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: repeat(2, 1fr); }
        }

        @media (max-width: 768px) {
            .header-inner { padding: 0 16px; }
            .nav-links {
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: rgba(10,10,20,0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 20px 24px 30px;
                gap: 6px;
                border-bottom: 1px solid var(--border-color);
                transform: translateY(-120%);
                opacity: 0;
                transition: var(--transition);
                pointer-events: none;
                z-index: 999;
            }
            .nav-links.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
            .nav-links a { width: 100%; padding: 12px 18px; }
            .nav-cta { display: none; }
            .nav-cta.mobile-show { display: block; width: 100%; margin-top: 8px; }
            .nav-cta.mobile-show a { width: 100%; justify-content: center; }
            .nav-toggle { display: flex; }

            .article-hero { padding: 120px 0 40px 0; }
            .article-hero h1 { font-size: 1.8rem; }
            .article-hero .lead { font-size: 1rem; }
            .article-body { padding: 28px 20px; }
            .article-body h2 { font-size: 1.3rem; }
            .article-body p { font-size: 0.98rem; }
            .article-sidebar { grid-template-columns: 1fr; }
            .article-nav { flex-direction: column; }
            .article-nav a { max-width: 100%; }
            .related-grid { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr; gap: 30px; }
            .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
            .footer-links { flex-wrap: wrap; justify-content: center; }
            .section-padding { padding: 50px 0; }
            .section-title { font-size: 1.5rem; }
        }

        @media (max-width: 520px) {
            .article-hero h1 { font-size: 1.5rem; }
            .article-body { padding: 20px 16px; border-radius: var(--radius-md); }
            .article-meta { gap: 10px; }
            .container-custom { padding: 0 16px; }
            .sidebar-card { padding: 20px 16px; }
        }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #0d1b2a;
            --primary-light: #1b2d45;
            --primary-dark: #070f1a;
            --accent: #f5a623;
            --accent-hover: #e09515;
            --accent-glow: rgba(245, 166, 35, 0.25);
            --bg: #f8f9fb;
            --bg-alt: #eef1f5;
            --bg-card: #ffffff;
            --text: #1a1a2e;
            --text-secondary: #6c757d;
            --text-light: #9ca3af;
            --border: #dee2e6;
            --border-light: #f0f0f0;
            --shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
            --shadow-hover: 0 12px 36px rgba(0, 0, 0, 0.12);
            --shadow-glow: 0 0 30px rgba(245, 166, 35, 0.12);
            --radius: 14px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --transition: 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
            --container-max: 1200px;
            --header-h: 72px;
        }

        /* ===== 基础 Reset ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: var(--accent);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--accent-hover);
        }
        a:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.25;
            font-weight: 700;
            color: var(--text);
        }
        p {
            margin-bottom: 1em;
        }
        p:last-child {
            margin-bottom: 0;
        }

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

        /* ===== 导航 ===== */
        .site-header {
            background: var(--primary);
            position: sticky;
            top: 0;
            z-index: 1000;
            height: var(--header-h);
            display: flex;
            align-items: center;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
        }
        .header-inner {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
        }
        .logo a {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 800;
            color: #ffffff;
            letter-spacing: 0.5px;
        }
        .logo a i {
            color: var(--accent);
            font-size: 1.5rem;
        }
        .logo a:hover {
            color: var(--accent);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            flex: 1;
            justify-content: center;
        }
        .nav-links a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            color: rgba(255, 255, 255, 0.75);
            font-weight: 500;
            font-size: 0.95rem;
            transition: all var(--transition);
            position: relative;
            letter-spacing: 0.3px;
        }
        .nav-links a:hover {
            color: #ffffff;
            background: rgba(255, 255, 255, 0.08);
        }
        .nav-links a.active {
            color: var(--accent);
            background: rgba(245, 166, 35, 0.12);
        }
        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--accent);
            border-radius: 3px;
        }
        .nav-cta {
            flex-shrink: 0;
        }
        .nav-cta a {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 24px;
            background: var(--accent);
            color: #0d1b2a;
            border-radius: var(--radius-sm);
            font-weight: 700;
            font-size: 0.9rem;
            transition: all var(--transition);
            letter-spacing: 0.3px;
        }
        .nav-cta a:hover {
            background: var(--accent-hover);
            color: #0d1b2a;
            transform: translateY(-1px);
            box-shadow: 0 4px 16px var(--accent-glow);
        }
        .nav-cta a i {
            font-size: 0.85rem;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: #ffffff;
            font-size: 1.6rem;
            cursor: pointer;
            padding: 4px 8px;
            border-radius: var(--radius-sm);
            transition: background var(--transition);
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.08);
        }
        .mobile-show {
            display: none;
        }

        @media (max-width: 900px) {
            .nav-links {
                position: fixed;
                top: var(--header-h);
                left: 0;
                right: 0;
                background: var(--primary-dark);
                flex-direction: column;
                padding: 20px 24px 30px;
                gap: 8px;
                transform: translateY(-120%);
                opacity: 0;
                visibility: hidden;
                transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
                box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
                border-bottom: 2px solid var(--accent);
                z-index: 999;
                justify-content: flex-start;
            }
            .nav-links.open {
                transform: translateY(0);
                opacity: 1;
                visibility: visible;
            }
            .nav-links a {
                width: 100%;
                padding: 14px 20px;
                font-size: 1.05rem;
                border-radius: var(--radius-sm);
            }
            .nav-links a.active::after {
                display: none;
            }
            .nav-links a.active {
                background: rgba(245, 166, 35, 0.15);
                color: var(--accent);
            }
            .nav-cta {
                display: none;
            }
            .mobile-show {
                display: block;
                margin-top: 10px;
                width: 100%;
            }
            .mobile-show a {
                display: flex;
                align-items: center;
                justify-content: center;
                gap: 10px;
                padding: 14px 20px;
                background: var(--accent);
                color: #0d1b2a;
                border-radius: var(--radius-sm);
                font-weight: 700;
                font-size: 1rem;
                transition: all var(--transition);
            }
            .mobile-show a:hover {
                background: var(--accent-hover);
                color: #0d1b2a;
            }
            .nav-toggle {
                display: block;
            }
        }
        @media (max-width: 520px) {
            .header-inner {
                padding: 0 12px;
                gap: 8px;
            }
            .logo a {
                font-size: 1.1rem;
            }
            .logo a i {
                font-size: 1.2rem;
            }
        }

        /* ===== Hero ===== */
        .category-hero {
            position: relative;
            min-height: 420px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            background: var(--primary-dark);
            overflow: hidden;
            padding: 80px 24px 60px;
        }
        .category-hero .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.45;
            transform: scale(1.05);
            transition: transform 8s ease;
        }
        .category-hero:hover .hero-bg {
            transform: scale(1);
        }
        .category-hero .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(13, 27, 42, 0.92) 0%, rgba(13, 27, 42, 0.70) 50%, rgba(13, 27, 42, 0.88) 100%);
            z-index: 1;
        }
        .category-hero .hero-content {
            position: relative;
            z-index: 2;
            max-width: 780px;
        }
        .category-hero .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(245, 166, 35, 0.15);
            border: 1px solid rgba(245, 166, 35, 0.25);
            padding: 6px 18px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--accent);
            letter-spacing: 0.5px;
            margin-bottom: 20px;
        }
        .category-hero .hero-badge i {
            font-size: 0.75rem;
        }
        .category-hero h1 {
            font-size: 3rem;
            font-weight: 900;
            color: #ffffff;
            line-height: 1.15;
            margin-bottom: 18px;
            letter-spacing: -0.5px;
        }
        .category-hero h1 span {
            color: var(--accent);
        }
        .category-hero p {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.75);
            max-width: 600px;
            margin: 0 auto 28px;
            line-height: 1.7;
        }
        .category-hero .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            justify-content: center;
        }
        .category-hero .hero-actions .btn-primary {
            padding: 14px 36px;
            background: var(--accent);
            color: #0d1b2a;
            border-radius: var(--radius-sm);
            font-weight: 700;
            font-size: 1rem;
            transition: all var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
            border: none;
            cursor: pointer;
        }
        .category-hero .hero-actions .btn-primary:hover {
            background: var(--accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 8px 30px var(--accent-glow);
        }
        .category-hero .hero-actions .btn-outline {
            padding: 14px 36px;
            background: transparent;
            color: #ffffff;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 1rem;
            transition: all var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
            border: 2px solid rgba(255, 255, 255, 0.25);
            cursor: pointer;
        }
        .category-hero .hero-actions .btn-outline:hover {
            border-color: var(--accent);
            color: var(--accent);
            background: rgba(245, 166, 35, 0.08);
        }
        @media (max-width: 768px) {
            .category-hero {
                min-height: 320px;
                padding: 60px 16px 48px;
            }
            .category-hero h1 {
                font-size: 2rem;
            }
            .category-hero p {
                font-size: 1rem;
            }
            .category-hero .hero-actions .btn-primary,
            .category-hero .hero-actions .btn-outline {
                padding: 12px 28px;
                font-size: 0.9rem;
            }
        }
        @media (max-width: 520px) {
            .category-hero h1 {
                font-size: 1.65rem;
            }
            .category-hero .hero-actions {
                flex-direction: column;
                align-items: center;
            }
        }

        /* ===== 板块通用 ===== */
        .section-pad {
            padding: 80px 0;
        }
        .section-pad-sm {
            padding: 56px 0;
        }
        .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: 1.05rem;
            color: var(--text-secondary);
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.6;
        }
        .section-title .title-tag {
            display: inline-block;
            background: rgba(245, 166, 35, 0.10);
            color: var(--accent);
            font-weight: 600;
            font-size: 0.8rem;
            padding: 4px 14px;
            border-radius: 50px;
            letter-spacing: 1px;
            margin-bottom: 14px;
            border: 1px solid rgba(245, 166, 35, 0.15);
        }
        @media (max-width: 768px) {
            .section-pad {
                padding: 48px 0;
            }
            .section-pad-sm {
                padding: 36px 0;
            }
            .section-title {
                margin-bottom: 32px;
            }
            .section-title h2 {
                font-size: 1.6rem;
            }
            .section-title p {
                font-size: 0.95rem;
            }
        }

        /* ===== 概述板块 ===== */
        .overview-block {
            background: var(--bg-card);
        }
        .overview-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .overview-text h3 {
            font-size: 1.6rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text);
        }
        .overview-text h3 i {
            color: var(--accent);
            margin-right: 8px;
        }
        .overview-text p {
            color: var(--text-secondary);
            margin-bottom: 16px;
            line-height: 1.8;
        }
        .overview-text .feature-list {
            display: grid;
            gap: 12px;
            margin-top: 20px;
        }
        .overview-text .feature-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 10px 16px;
            background: var(--bg);
            border-radius: var(--radius-sm);
            border-left: 3px solid var(--accent);
            font-weight: 500;
            color: var(--text);
        }
        .overview-text .feature-list li i {
            color: var(--accent);
            margin-top: 2px;
            font-size: 0.9rem;
        }
        .overview-stats {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }
        .stat-card {
            background: var(--bg);
            border-radius: var(--radius);
            padding: 28px 20px;
            text-align: center;
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }
        .stat-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: var(--accent);
        }
        .stat-card .stat-number {
            font-size: 2.4rem;
            font-weight: 900;
            color: var(--primary);
            line-height: 1.1;
        }
        .stat-card .stat-number .accent {
            color: var(--accent);
        }
        .stat-card .stat-label {
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin-top: 6px;
            font-weight: 500;
        }
        .stat-card .stat-icon {
            font-size: 1.8rem;
            color: var(--accent);
            margin-bottom: 12px;
            opacity: 0.7;
        }
        @media (max-width: 900px) {
            .overview-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .overview-stats {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 520px) {
            .overview-stats {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-card {
                padding: 20px 12px;
            }
            .stat-card .stat-number {
                font-size: 1.8rem;
            }
            .overview-text h3 {
                font-size: 1.3rem;
            }
        }

        /* ===== 入口类型卡片 ===== */
        .types-block {
            background: var(--bg-alt);
        }
        .types-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .type-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }
        .type-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: var(--accent);
        }
        .type-card .card-img {
            height: 200px;
            background: var(--primary-light);
            position: relative;
            overflow: hidden;
        }
        .type-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.6s ease;
        }
        .type-card:hover .card-img img {
            transform: scale(1.05);
        }
        .type-card .card-img .card-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            background: var(--accent);
            color: #0d1b2a;
            font-size: 0.75rem;
            font-weight: 700;
            padding: 4px 12px;
            border-radius: 50px;
            letter-spacing: 0.3px;
        }
        .type-card .card-body {
            padding: 24px 20px 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .type-card .card-body h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .type-card .card-body h3 i {
            color: var(--accent);
            margin-right: 8px;
            font-size: 1.1rem;
        }
        .type-card .card-body p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.7;
            flex: 1;
        }
        .type-card .card-body .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-top: 16px;
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--accent);
            transition: gap var(--transition);
        }
        .type-card .card-body .card-link:hover {
            gap: 10px;
            color: var(--accent-hover);
        }
        @media (max-width: 900px) {
            .types-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 520px) {
            .types-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .type-card .card-img {
                height: 160px;
            }
        }

        /* ===== 使用指南流程 ===== */
        .steps-block {
            background: var(--bg-card);
        }
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            position: relative;
        }
        .steps-grid::before {
            content: '';
            position: absolute;
            top: 48px;
            left: 10%;
            right: 10%;
            height: 3px;
            background: linear-gradient(90deg, var(--accent), var(--accent-hover), var(--accent));
            opacity: 0.25;
            z-index: 0;
        }
        .step-item {
            text-align: center;
            position: relative;
            z-index: 1;
            padding: 0 8px;
        }
        .step-item .step-number {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--primary);
            color: #ffffff;
            font-size: 1.4rem;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
            border: 3px solid var(--accent);
            box-shadow: 0 0 0 4px rgba(245, 166, 35, 0.10);
            transition: all var(--transition);
        }
        .step-item:hover .step-number {
            background: var(--accent);
            color: #0d1b2a;
            transform: scale(1.08);
            box-shadow: 0 0 0 6px rgba(245, 166, 35, 0.20);
        }
        .step-item h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .step-item p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }
        @media (max-width: 900px) {
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 32px 20px;
            }
            .steps-grid::before {
                display: none;
            }
        }
        @media (max-width: 520px) {
            .steps-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px 12px;
            }
            .step-item .step-number {
                width: 44px;
                height: 44px;
                font-size: 1.1rem;
            }
        }

        /* ===== 安全提示板块 ===== */
        .security-block {
            background: var(--primary);
            color: #ffffff;
        }
        .security-block .section-title h2 {
            color: #ffffff;
        }
        .security-block .section-title p {
            color: rgba(255, 255, 255, 0.7);
        }
        .security-block .section-title .title-tag {
            background: rgba(245, 166, 35, 0.15);
            border-color: rgba(245, 166, 35, 0.25);
        }
        .security-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .security-item {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius);
            padding: 28px 20px;
            text-align: center;
            transition: all var(--transition);
            backdrop-filter: blur(4px);
        }
        .security-item:hover {
            background: rgba(255, 255, 255, 0.10);
            border-color: var(--accent);
            transform: translateY(-4px);
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
        }
        .security-item .sec-icon {
            font-size: 2rem;
            color: var(--accent);
            margin-bottom: 14px;
        }
        .security-item h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 8px;
        }
        .security-item p {
            font-size: 0.88rem;
            color: rgba(255, 255, 255, 0.65);
            line-height: 1.6;
        }
        .security-item .sec-tag {
            display: inline-block;
            margin-top: 12px;
            padding: 3px 12px;
            border-radius: 50px;
            font-size: 0.7rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            background: rgba(245, 166, 35, 0.15);
            color: var(--accent);
            border: 1px solid rgba(245, 166, 35, 0.15);
        }
        @media (max-width: 900px) {
            .security-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .security-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .security-item {
                padding: 20px 16px;
            }
        }

        /* ===== FAQ ===== */
        .faq-block {
            background: var(--bg-alt);
        }
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: grid;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(245, 166, 35, 0.20);
            box-shadow: var(--shadow);
        }
        .faq-item .faq-q {
            padding: 18px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text);
            transition: background var(--transition);
            gap: 16px;
            user-select: none;
        }
        .faq-item .faq-q:hover {
            background: rgba(245, 166, 35, 0.04);
        }
        .faq-item .faq-q .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--bg);
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all var(--transition);
            font-size: 0.8rem;
            color: var(--accent);
        }
        .faq-item.active .faq-q .faq-icon {
            transform: rotate(180deg);
            background: var(--accent);
            color: #0d1b2a;
        }
        .faq-item .faq-a {
            max-height: 0;
            padding: 0 24px;
            overflow: hidden;
            transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .faq-item.active .faq-a {
            max-height: 300px;
            padding: 0 24px 20px;
        }
        .faq-item .faq-a p {
            margin-bottom: 0;
        }
        @media (max-width: 520px) {
            .faq-item .faq-q {
                padding: 14px 16px;
                font-size: 0.95rem;
            }
            .faq-item .faq-a {
                padding: 0 16px;
                font-size: 0.9rem;
            }
            .faq-item.active .faq-a {
                padding: 0 16px 16px;
            }
        }

        /* ===== CTA ===== */
        .cta-block {
            background: var(--bg-card);
            position: relative;
            overflow: hidden;
        }
        .cta-block::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -30%;
            width: 500px;
            height: 500px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(245, 166, 35, 0.06), transparent 70%);
            pointer-events: none;
        }
        .cta-inner {
            max-width: 700px;
            margin: 0 auto;
            text-align: center;
            position: relative;
            z-index: 1;
        }
        .cta-inner h2 {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 14px;
        }
        .cta-inner h2 i {
            color: var(--accent);
            margin-right: 8px;
        }
        .cta-inner p {
            font-size: 1.05rem;
            color: var(--text-secondary);
            margin-bottom: 28px;
            line-height: 1.7;
        }
        .cta-inner .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            padding: 16px 44px;
            background: var(--accent);
            color: #0d1b2a;
            border-radius: var(--radius-sm);
            font-weight: 700;
            font-size: 1.1rem;
            transition: all var(--transition);
            border: none;
            cursor: pointer;
        }
        .cta-inner .cta-btn:hover {
            background: var(--accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 8px 30px var(--accent-glow);
        }
        .cta-inner .cta-btn i {
            font-size: 1rem;
        }
        .cta-inner .cta-note {
            margin-top: 16px;
            font-size: 0.85rem;
            color: var(--text-light);
        }
        @media (max-width: 520px) {
            .cta-inner h2 {
                font-size: 1.5rem;
            }
            .cta-inner .cta-btn {
                padding: 14px 32px;
                font-size: 1rem;
            }
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, 0.8);
            padding: 56px 0 0;
            border-top: 3px solid var(--accent);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.8fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .footer-brand h4 {
            font-size: 1.3rem;
            font-weight: 800;
            color: #ffffff;
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .footer-brand h4 i {
            color: var(--accent);
        }
        .footer-brand p {
            font-size: 0.95rem;
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.7;
            max-width: 280px;
        }
        .footer-col h5 {
            font-size: 1rem;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }
        .footer-col ul {
            display: grid;
            gap: 10px;
        }
        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.9rem;
            transition: all var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .footer-col ul li a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .footer-bottom {
            padding: 24px 0;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.5);
        }
        .footer-bottom .footer-links {
            display: flex;
            gap: 18px;
        }
        .footer-bottom .footer-links a {
            color: rgba(255, 255, 255, 0.5);
            font-size: 0.85rem;
            transition: color var(--transition);
        }
        .footer-bottom .footer-links a:hover {
            color: var(--accent);
        }
        @media (max-width: 900px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
            .footer-brand p {
                max-width: 100%;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 10px;
            }
            .footer-bottom .footer-links {
                gap: 12px;
                flex-wrap: wrap;
                justify-content: center;
            }
            .site-footer {
                padding: 36px 0 0;
            }
        }

        /* ===== 辅助 ===== */
        .text-accent {
            color: var(--accent);
        }
        .bg-accent-soft {
            background: rgba(245, 166, 35, 0.06);
        }
        .mt-1 {
            margin-top: 8px;
        }
        .mt-2 {
            margin-top: 16px;
        }
        .mt-3 {
            margin-top: 24px;
        }
        .gap-1 {
            gap: 8px;
        }
        .gap-2 {
            gap: 16px;
        }

        /* ===== Foundation 补丁 ===== */
        .grid-container {
            max-width: var(--container-max);
        }
        .button.accent {
            background: var(--accent);
            color: #0d1b2a;
            font-weight: 700;
        }
        .button.accent:hover {
            background: var(--accent-hover);
            color: #0d1b2a;
        }
        .card {
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }
        .card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }
        hr {
            border-color: var(--border-light);
            margin: 2rem 0;
        }

/* roulang page: category2 */
/* ========== 设计变量 ========== */
        :root {
            --primary: #1a2a6c;
            --primary-light: #2d4a8e;
            --primary-dark: #0f1a42;
            --secondary: #e8491d;
            --secondary-light: #ff6a3d;
            --accent: #f5a623;
            --accent-glow: rgba(245, 166, 35, 0.3);
            --bg-dark: #0b0f1a;
            --bg-section: #111827;
            --bg-card: #1a2235;
            --bg-card-hover: #1f2a42;
            --text-white: #f0f2f5;
            --text-light: #c8ccd4;
            --text-muted: #8892a4;
            --border-color: rgba(255, 255, 255, 0.08);
            --border-glow: rgba(232, 73, 29, 0.25);
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.45);
            --shadow-hover: 0 14px 48px rgba(232, 73, 29, 0.18);
            --transition: all 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --font-body: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
        }

        /* ========== 基础 Reset ========== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-body);
            background: var(--bg-dark);
            color: var(--text-white);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: var(--secondary-light);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover,
        a:focus {
            color: var(--accent);
            outline: none;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            outline: none;
            border: none;
        }
        ul,
        ol {
            list-style: none;
        }

        /* ========== 容器 ========== */
        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 640px) {
            .container-custom {
                padding: 0 16px;
            }
        }

        /* ========== 导航 ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(11, 15, 26, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .site-header.scrolled {
            background: rgba(11, 15, 26, 0.98);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
            height: 68px;
        }
        .logo a {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--text-white);
            letter-spacing: 0.5px;
            transition: var(--transition);
        }
        .logo a i {
            color: var(--secondary);
            font-size: 1.5rem;
            transition: var(--transition);
        }
        .logo a:hover i {
            transform: rotate(20deg) scale(1.1);
            color: var(--accent);
        }
        .logo a:hover {
            color: var(--secondary-light);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-links a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-light);
            transition: var(--transition);
            position: relative;
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%) scaleX(0);
            width: 60%;
            height: 2px;
            background: var(--secondary);
            border-radius: 2px;
            transition: var(--transition);
        }
        .nav-links a:hover::after,
        .nav-links a.active::after {
            transform: translateX(-50%) scaleX(1);
        }
        .nav-links a:hover {
            color: var(--text-white);
            background: rgba(255, 255, 255, 0.04);
        }
        .nav-links a.active {
            color: var(--secondary-light);
            background: rgba(232, 73, 29, 0.08);
        }
        .nav-links a.active::after {
            background: var(--secondary-light);
        }

        .nav-cta a {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 26px;
            background: linear-gradient(135deg, var(--secondary), var(--secondary-light));
            color: #fff;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.92rem;
            transition: var(--transition);
            box-shadow: 0 4px 18px rgba(232, 73, 29, 0.3);
        }
        .nav-cta a:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(232, 73, 29, 0.45);
            color: #fff;
        }
        .nav-cta a i {
            transition: var(--transition);
        }
        .nav-cta a:hover i {
            transform: translateX(4px);
        }
        .mobile-show {
            display: none;
        }

        .nav-toggle {
            display: none;
            background: transparent;
            color: var(--text-white);
            font-size: 1.5rem;
            padding: 6px 10px;
            border-radius: var(--radius-sm);
            cursor: pointer;
            transition: var(--transition);
            border: 1px solid var(--border-color);
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.06);
            border-color: var(--secondary);
        }

        @media (max-width: 868px) {
            .nav-links {
                position: fixed;
                top: 68px;
                left: 0;
                right: 0;
                background: rgba(11, 15, 26, 0.98);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 20px 24px 30px;
                gap: 6px;
                border-bottom: 1px solid var(--border-color);
                transform: translateY(-120%);
                opacity: 0;
                pointer-events: none;
                transition: var(--transition);
                box-shadow: 0 20px 50px rgba(0, 0, 0, 0.6);
            }
            .nav-links.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav-links a {
                width: 100%;
                padding: 12px 18px;
                font-size: 1.05rem;
                border-radius: var(--radius-sm);
            }
            .nav-links a::after {
                display: none;
            }
            .nav-cta.desktop-show {
                display: none;
            }
            .mobile-show {
                display: block;
                margin-top: 10px;
                width: 100%;
            }
            .mobile-show a {
                justify-content: center;
                width: 100%;
            }
            .nav-toggle {
                display: block;
            }
            .header-inner {
                padding: 0 16px;
            }
        }
        @media (max-width: 480px) {
            .logo a {
                font-size: 1.1rem;
            }
            .logo a i {
                font-size: 1.2rem;
            }
        }

        /* ========== 分类 Banner ========== */
        .category-banner {
            position: relative;
            padding: 140px 0 80px;
            background: var(--bg-section);
            overflow: hidden;
            border-bottom: 1px solid var(--border-color);
        }
        .category-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.18;
            filter: saturate(0.7) brightness(0.5);
            z-index: 0;
        }
        .category-banner::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(11, 15, 26, 0.88) 0%, rgba(26, 42, 108, 0.55) 50%, rgba(11, 15, 26, 0.85) 100%);
            z-index: 1;
        }
        .category-banner .container-custom {
            position: relative;
            z-index: 2;
        }
        .category-banner .breadcrumb {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 24px;
        }
        .category-banner .breadcrumb a {
            color: var(--text-muted);
            transition: var(--transition);
        }
        .category-banner .breadcrumb a:hover {
            color: var(--secondary-light);
        }
        .category-banner .breadcrumb span {
            color: var(--text-light);
        }
        .category-banner .banner-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 16px;
            background: rgba(232, 73, 29, 0.15);
            border: 1px solid rgba(232, 73, 29, 0.3);
            border-radius: 30px;
            font-size: 0.85rem;
            color: var(--secondary-light);
            font-weight: 500;
            margin-bottom: 18px;
        }
        .category-banner h1 {
            font-size: 3rem;
            font-weight: 800;
            line-height: 1.2;
            color: var(--text-white);
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }
        .category-banner h1 i {
            color: var(--secondary);
            margin-right: 8px;
        }
        .category-banner .banner-desc {
            font-size: 1.15rem;
            color: var(--text-light);
            max-width: 680px;
            line-height: 1.8;
        }
        .category-banner .banner-stats {
            display: flex;
            gap: 40px;
            margin-top: 32px;
            padding-top: 28px;
            border-top: 1px solid var(--border-color);
        }
        .category-banner .banner-stats .stat-item {
            display: flex;
            flex-direction: column;
        }
        .category-banner .banner-stats .stat-number {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.2;
        }
        .category-banner .banner-stats .stat-label {
            font-size: 0.85rem;
            color: var(--text-muted);
        }
        @media (max-width: 868px) {
            .category-banner {
                padding: 110px 0 56px;
            }
            .category-banner h1 {
                font-size: 2.2rem;
            }
            .category-banner .banner-desc {
                font-size: 1rem;
            }
            .category-banner .banner-stats {
                gap: 24px;
                flex-wrap: wrap;
            }
            .category-banner .banner-stats .stat-number {
                font-size: 1.4rem;
            }
        }
        @media (max-width: 520px) {
            .category-banner h1 {
                font-size: 1.7rem;
            }
            .category-banner .banner-stats {
                gap: 16px;
            }
            .category-banner .banner-stats .stat-item {
                min-width: 80px;
            }
        }

        /* ========== 板块通用 ========== */
        .section-block {
            padding: 80px 0;
        }
        .section-block.alt-bg {
            background: var(--bg-section);
        }
        .section-title-wrap {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-title-wrap .section-label {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 4px 16px;
            background: rgba(232, 73, 29, 0.1);
            border: 1px solid rgba(232, 73, 29, 0.2);
            border-radius: 30px;
            font-size: 0.82rem;
            color: var(--secondary-light);
            font-weight: 500;
            margin-bottom: 12px;
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        .section-title-wrap h2 {
            font-size: 2.4rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }
        .section-title-wrap h2 i {
            color: var(--secondary);
        }
        .section-title-wrap p {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 600px;
            margin: 0 auto;
        }
        @media (max-width: 868px) {
            .section-block {
                padding: 56px 0;
            }
            .section-title-wrap h2 {
                font-size: 1.8rem;
            }
            .section-title-wrap p {
                font-size: 0.95rem;
            }
            .section-title-wrap {
                margin-bottom: 32px;
            }
        }
        @media (max-width: 520px) {
            .section-title-wrap h2 {
                font-size: 1.5rem;
            }
        }

        /* ========== 卡片 ========== */
        .card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
            box-shadow: var(--shadow-card);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .card:hover {
            transform: translateY(-6px);
            border-color: rgba(232, 73, 29, 0.25);
            box-shadow: var(--shadow-hover);
            background: var(--bg-card-hover);
        }
        .card .card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            transition: var(--transition);
        }
        .card:hover .card-img {
            transform: scale(1.03);
        }
        .card .card-body {
            padding: 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .card .card-tag {
            display: inline-block;
            padding: 3px 12px;
            background: rgba(245, 166, 35, 0.12);
            border: 1px solid rgba(245, 166, 35, 0.2);
            border-radius: 20px;
            font-size: 0.75rem;
            color: var(--accent);
            font-weight: 500;
            margin-bottom: 10px;
            align-self: flex-start;
        }
        .card .card-title {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .card .card-text {
            font-size: 0.92rem;
            color: var(--text-muted);
            line-height: 1.7;
            flex: 1;
        }
        .card .card-footer-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-top: 16px;
            font-weight: 600;
            color: var(--secondary-light);
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .card .card-footer-link i {
            transition: var(--transition);
        }
        .card:hover .card-footer-link i {
            transform: translateX(4px);
        }

        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        @media (max-width: 1024px) {
            .card-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
        }
        @media (max-width: 640px) {
            .card-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }
            .card .card-img {
                height: 180px;
            }
        }

        /* ========== 技巧列表项 ========== */
        .tip-list {
            display: flex;
            flex-direction: column;
            gap: 18px;
        }
        .tip-item {
            display: flex;
            gap: 20px;
            padding: 24px 28px;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            transition: var(--transition);
            align-items: flex-start;
        }
        .tip-item:hover {
            background: var(--bg-card-hover);
            border-color: rgba(232, 73, 29, 0.2);
            transform: translateX(4px);
        }
        .tip-item .tip-icon {
            flex-shrink: 0;
            width: 48px;
            height: 48px;
            border-radius: var(--radius-sm);
            background: rgba(232, 73, 29, 0.1);
            border: 1px solid rgba(232, 73, 29, 0.2);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            color: var(--secondary-light);
            transition: var(--transition);
        }
        .tip-item:hover .tip-icon {
            background: rgba(232, 73, 29, 0.18);
            border-color: var(--secondary);
            transform: scale(1.05);
        }
        .tip-item .tip-content {
            flex: 1;
        }
        .tip-item .tip-content h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 6px;
        }
        .tip-item .tip-content p {
            font-size: 0.92rem;
            color: var(--text-muted);
            line-height: 1.7;
        }
        .tip-item .tip-content .tip-meta {
            display: flex;
            gap: 16px;
            margin-top: 10px;
            font-size: 0.82rem;
            color: var(--text-muted);
        }
        .tip-item .tip-content .tip-meta span {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .tip-item .tip-content .tip-meta i {
            color: var(--accent);
        }
        @media (max-width: 640px) {
            .tip-item {
                flex-direction: column;
                padding: 18px 20px;
                gap: 12px;
            }
            .tip-item .tip-icon {
                width: 40px;
                height: 40px;
                font-size: 1.1rem;
            }
        }

        /* ========== 统计/数据块 ========== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .stat-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 32px 24px;
            text-align: center;
            transition: var(--transition);
        }
        .stat-card:hover {
            transform: translateY(-4px);
            border-color: rgba(232, 73, 29, 0.2);
            box-shadow: var(--shadow-hover);
        }
        .stat-card .stat-icon {
            font-size: 2rem;
            color: var(--secondary);
            margin-bottom: 12px;
        }
        .stat-card .stat-number {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.2;
            margin-bottom: 4px;
        }
        .stat-card .stat-label {
            font-size: 0.92rem;
            color: var(--text-muted);
        }
        @media (max-width: 868px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .stat-card .stat-number {
                font-size: 1.8rem;
            }
        }
        @media (max-width: 480px) {
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-card {
                padding: 20px 16px;
            }
        }

        /* ========== FAQ ========== */
        .faq-grid {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(232, 73, 29, 0.15);
        }
        .faq-item .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 24px;
            cursor: pointer;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-white);
            transition: var(--transition);
            user-select: none;
        }
        .faq-item .faq-question:hover {
            color: var(--secondary-light);
        }
        .faq-item .faq-question i {
            color: var(--secondary);
            transition: var(--transition);
            font-size: 0.9rem;
        }
        .faq-item.active .faq-question i {
            transform: rotate(180deg);
        }
        .faq-item .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px;
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.8;
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }
        @media (max-width: 640px) {
            .faq-item .faq-question {
                padding: 16px 18px;
                font-size: 0.95rem;
            }
            .faq-item .faq-answer {
                font-size: 0.9rem;
            }
            .faq-item.active .faq-answer {
                padding: 0 18px 16px;
            }
        }

        /* ========== CTA ========== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--bg-section) 100%);
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.06;
            z-index: 0;
        }
        .cta-section .container-custom {
            position: relative;
            z-index: 1;
        }
        .cta-box {
            text-align: center;
            padding: 60px 20px;
        }
        .cta-box h2 {
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 12px;
        }
        .cta-box h2 i {
            color: var(--secondary);
        }
        .cta-box p {
            font-size: 1.05rem;
            color: var(--text-light);
            max-width: 560px;
            margin: 0 auto 28px;
        }
        .cta-box .cta-btn-group {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .cta-box .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 36px;
            background: linear-gradient(135deg, var(--secondary), var(--secondary-light));
            color: #fff;
            border-radius: var(--radius-sm);
            font-weight: 700;
            font-size: 1rem;
            transition: var(--transition);
            box-shadow: 0 6px 24px rgba(232, 73, 29, 0.35);
        }
        .cta-box .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 40px rgba(232, 73, 29, 0.5);
            color: #fff;
        }
        .cta-box .btn-primary i {
            transition: var(--transition);
        }
        .cta-box .btn-primary:hover i {
            transform: translateX(4px);
        }
        .cta-box .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 36px;
            background: transparent;
            border: 2px solid var(--border-color);
            color: var(--text-light);
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 1rem;
            transition: var(--transition);
        }
        .cta-box .btn-outline:hover {
            border-color: var(--secondary);
            color: var(--secondary-light);
            background: rgba(232, 73, 29, 0.06);
            transform: translateY(-2px);
        }
        @media (max-width: 640px) {
            .cta-box {
                padding: 40px 16px;
            }
            .cta-box h2 {
                font-size: 1.6rem;
            }
            .cta-box p {
                font-size: 0.95rem;
            }
            .cta-box .btn-primary,
            .cta-box .btn-outline {
                width: 100%;
                justify-content: center;
                padding: 14px 24px;
            }
        }

        /* ========== 相关内容 ========== */
        .related-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .related-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
        }
        .related-card:hover {
            transform: translateY(-4px);
            border-color: rgba(232, 73, 29, 0.2);
            box-shadow: var(--shadow-hover);
        }
        .related-card img {
            width: 100%;
            height: 140px;
            object-fit: cover;
            transition: var(--transition);
        }
        .related-card:hover img {
            transform: scale(1.04);
        }
        .related-card .related-body {
            padding: 16px 18px 18px;
        }
        .related-card .related-body h5 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 4px;
            line-height: 1.4;
        }
        .related-card .related-body span {
            font-size: 0.8rem;
            color: var(--text-muted);
        }
        @media (max-width: 868px) {
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
        }
        @media (max-width: 480px) {
            .related-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .related-card .related-body {
                padding: 12px 14px 14px;
            }
            .related-card .related-body h5 {
                font-size: 0.85rem;
            }
        }

        /* ========== 页脚 ========== */
        .site-footer {
            background: var(--bg-section);
            border-top: 1px solid var(--border-color);
            padding: 60px 0 0;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .site-footer .footer-brand h4 {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .site-footer .footer-brand h4 i {
            color: var(--secondary);
        }
        .site-footer .footer-brand p {
            font-size: 0.92rem;
            color: var(--text-muted);
            line-height: 1.8;
            max-width: 320px;
        }
        .site-footer .footer-col h5 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }
        .site-footer .footer-col ul li {
            margin-bottom: 10px;
        }
        .site-footer .footer-col ul li a {
            font-size: 0.9rem;
            color: var(--text-muted);
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .site-footer .footer-col ul li a:hover {
            color: var(--secondary-light);
            transform: translateX(3px);
        }
        .site-footer .footer-bottom {
            padding: 24px 0;
            border-top: 1px solid var(--border-color);
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.85rem;
            color: var(--text-muted);
        }
        .site-footer .footer-bottom .footer-links {
            display: flex;
            gap: 20px;
        }
        .site-footer .footer-bottom .footer-links a {
            color: var(--text-muted);
            transition: var(--transition);
            font-size: 0.85rem;
        }
        .site-footer .footer-bottom .footer-links a:hover {
            color: var(--secondary-light);
        }
        @media (max-width: 868px) {
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 30px;
            }
            .site-footer .footer-brand {
                grid-column: 1 / -1;
            }
            .site-footer .footer-brand p {
                max-width: 100%;
            }
        }
        @media (max-width: 520px) {
            .site-footer {
                padding: 40px 0 0;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .site-footer .footer-bottom .footer-links {
                gap: 12px;
                flex-wrap: wrap;
                justify-content: center;
            }
        }

        /* ========== 额外响应式 ========== */
        @media (max-width: 868px) {
            .nav-cta:not(.mobile-show) {
                display: none;
            }
        }
        @media (min-width: 869px) {
            .mobile-show {
                display: none !important;
            }
        }

        /* ========== 滚动条 ========== */
        ::-webkit-scrollbar {
            width: 6px;
            height: 6px;
        }
        ::-webkit-scrollbar-track {
            background: var(--bg-dark);
        }
        ::-webkit-scrollbar-thumb {
            background: var(--primary-light);
            border-radius: 6px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: var(--secondary);
        }

        /* ========== 焦点样式 ========== */
        :focus-visible {
            outline: 2px solid var(--secondary);
            outline-offset: 2px;
            border-radius: 2px;
        }

        /* ========== 占位内容保护 ========== */
        .no-wrap {
            white-space: nowrap;
        }