/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #6c3fc5;
            --primary-dark: #4e2a9e;
            --primary-light: #8b6ad6;
            --secondary: #f59e0b;
            --secondary-dark: #d48806;
            --secondary-light: #fbbf24;
            --accent: #10b981;
            --accent-dark: #059669;
            --bg-body: #f8f7fc;
            --bg-white: #ffffff;
            --bg-dark: #1a1028;
            --bg-card: #ffffff;
            --text-primary: #1a1028;
            --text-secondary: #4b3a6b;
            --text-muted: #8a7aa8;
            --text-white: #ffffff;
            --border-color: #e8e3f0;
            --border-radius: 16px;
            --border-radius-sm: 10px;
            --border-radius-lg: 24px;
            --shadow-sm: 0 2px 8px rgba(108, 63, 197, 0.08);
            --shadow-md: 0 8px 30px rgba(108, 63, 197, 0.12);
            --shadow-lg: 0 20px 60px rgba(108, 63, 197, 0.18);
            --shadow-xl: 0 30px 80px rgba(108, 63, 197, 0.25);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Segoe UI', system-ui, -apple-system, 'Helvetica Neue', Arial, sans-serif;
            --container-max: 1280px;
            --header-height: 76px;
            --tab-height: 68px;
            --spacing-section: 5rem;
            --spacing-section-mobile: 3rem;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-tap-highlight-color: transparent;
        }

        body {
            font-family: var(--font-sans);
            font-size: 1rem;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-body);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            padding-top: var(--header-height);
            padding-bottom: var(--tab-height);
        }

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

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

        ul,
        ol {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 0.5rem;
        }

        .container {
            max-width: var(--container-max);
            padding-left: 1.25rem;
            padding-right: 1.25rem;
            margin-left: auto;
            margin-right: auto;
            width: 100%;
        }

        /* ===== 按钮系统 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            padding: 0.7rem 1.8rem;
            font-size: 0.95rem;
            font-weight: 600;
            border-radius: var(--border-radius-sm);
            border: 2px solid transparent;
            transition: var(--transition);
            cursor: pointer;
            text-align: center;
            line-height: 1.4;
            white-space: nowrap;
            letter-spacing: 0.01em;
        }
        .btn:focus-visible {
            outline: 3px solid var(--primary-light);
            outline-offset: 2px;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(108, 63, 197, 0.35);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 4px 12px rgba(108, 63, 197, 0.25);
        }
        .btn-secondary {
            background: var(--secondary);
            color: #fff;
            border-color: var(--secondary);
        }
        .btn-secondary:hover {
            background: var(--secondary-dark);
            border-color: var(--secondary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(245, 158, 11, 0.35);
        }
        .btn-secondary:active {
            transform: translateY(0);
        }
        .btn-outline {
            background: transparent;
            color: var(--primary);
            border-color: var(--primary);
        }
        .btn-outline:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(108, 63, 197, 0.25);
        }
        .btn-outline-light {
            background: transparent;
            color: #fff;
            border-color: rgba(255, 255, 255, 0.6);
        }
        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.15);
            border-color: #fff;
            color: #fff;
            transform: translateY(-2px);
        }
        .btn-lg {
            padding: 0.9rem 2.4rem;
            font-size: 1.05rem;
            border-radius: var(--border-radius);
        }
        .btn-sm {
            padding: 0.45rem 1.2rem;
            font-size: 0.85rem;
        }

        /* ===== 徽章 / 标签 ===== */
        .badge {
            display: inline-flex;
            align-items: center;
            padding: 0.25rem 0.85rem;
            font-size: 0.78rem;
            font-weight: 600;
            border-radius: 50px;
            line-height: 1.4;
            letter-spacing: 0.02em;
            background: var(--primary-light);
            color: #fff;
        }
        .badge-secondary {
            background: var(--secondary);
            color: #fff;
        }
        .badge-accent {
            background: var(--accent);
            color: #fff;
        }
        .badge-outline {
            background: transparent;
            border: 1.5px solid var(--primary);
            color: var(--primary);
        }

        /* ===== 顶部导航 (桌面) ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1040;
            height: var(--header-height);
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-color);
            transition: var(--transition);
            box-shadow: 0 1px 0 rgba(108, 63, 197, 0.05);
        }
        .site-header.scrolled {
            background: rgba(255, 255, 255, 0.97);
            box-shadow: 0 4px 30px rgba(108, 63, 197, 0.1);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 1.25rem;
        }

        .site-logo {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--primary-dark);
            letter-spacing: -0.02em;
        }
        .site-logo:hover {
            color: var(--primary);
        }
        .site-logo .logo-icon {
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.2rem;
            flex-shrink: 0;
        }
        .site-logo .logo-text {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .nav-desktop {
            display: flex;
            align-items: center;
            gap: 0.25rem;
        }
        .nav-desktop .nav-link {
            display: flex;
            align-items: center;
            padding: 0.5rem 1.1rem;
            font-size: 0.92rem;
            font-weight: 600;
            color: var(--text-secondary);
            border-radius: var(--border-radius-sm);
            transition: var(--transition);
            position: relative;
            letter-spacing: 0.01em;
        }
        .nav-desktop .nav-link:hover {
            color: var(--primary);
            background: rgba(108, 63, 197, 0.06);
        }
        .nav-desktop .nav-link.active {
            color: var(--primary);
            background: rgba(108, 63, 197, 0.10);
        }
        .nav-desktop .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--primary);
            border-radius: 4px;
        }
        .nav-desktop .nav-link i {
            margin-right: 0.4rem;
            font-size: 0.85rem;
        }

        /* ===== 移动底部 Tab ===== */
        .mobile-tab-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            height: var(--tab-height);
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-top: 1px solid var(--border-color);
            display: none;
            padding: 0 0.5rem;
            box-shadow: 0 -4px 20px rgba(108, 63, 197, 0.06);
        }
        .mobile-tab-bar .tab-items {
            display: flex;
            align-items: center;
            justify-content: space-around;
            height: 100%;
            max-width: 500px;
            margin: 0 auto;
        }
        .mobile-tab-bar .tab-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 2px;
            padding: 0.3rem 0.6rem;
            color: var(--text-muted);
            font-size: 0.65rem;
            font-weight: 600;
            border-radius: var(--border-radius-sm);
            transition: var(--transition);
            min-width: 64px;
            position: relative;
        }
        .mobile-tab-bar .tab-item i {
            font-size: 1.25rem;
            transition: var(--transition);
        }
        .mobile-tab-bar .tab-item:hover {
            color: var(--text-secondary);
        }
        .mobile-tab-bar .tab-item.active {
            color: var(--primary);
        }
        .mobile-tab-bar .tab-item.active::before {
            content: '';
            position: absolute;
            top: -1px;
            left: 50%;
            transform: translateX(-50%);
            width: 24px;
            height: 3px;
            background: var(--primary);
            border-radius: 4px;
        }
        .mobile-tab-bar .tab-item .tab-label {
            font-size: 0.6rem;
            line-height: 1.2;
            letter-spacing: 0.02em;
        }

        /* ===== Hero ===== */
        .hero-section {
            position: relative;
            min-height: 85vh;
            display: flex;
            align-items: center;
            background: linear-gradient(135deg, #1a1028 0%, #2d1b4e 40%, #3a2566 100%);
            overflow: hidden;
            margin-top: calc(-1 * var(--header-height));
            padding-top: var(--header-height);
        }
        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.25;
            mix-blend-mode: overlay;
            animation: heroParallax 20s ease-in-out infinite alternate;
        }
        @keyframes heroParallax {
            0% {
                transform: scale(1.02) translate(0, 0);
            }
            100% {
                transform: scale(1.08) translate(-10px, -10px);
            }
        }
        .hero-section::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(108, 63, 197, 0.3) 0%, transparent 70%),
                radial-gradient(ellipse at 70% 50%, rgba(245, 158, 11, 0.15) 0%, transparent 60%);
            pointer-events: none;
        }
        .hero-grid {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 4rem;
            align-items: center;
            padding: 4rem 0 5rem;
        }
        .hero-content {
            max-width: 600px;
        }
        .hero-content .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.15);
            padding: 0.4rem 1.2rem;
            border-radius: 50px;
            color: rgba(255, 255, 255, 0.9);
            font-size: 0.85rem;
            font-weight: 500;
            margin-bottom: 1.5rem;
        }
        .hero-content .hero-badge i {
            color: var(--secondary);
        }
        .hero-content h1 {
            font-size: 3.2rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.15;
            margin-bottom: 1.2rem;
            letter-spacing: -0.02em;
        }
        .hero-content h1 .highlight {
            background: linear-gradient(135deg, var(--secondary), #f97316);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-content .hero-desc {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.75);
            line-height: 1.8;
            margin-bottom: 2rem;
            max-width: 520px;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
        }
        .hero-visual {
            display: flex;
            justify-content: center;
            align-items: center;
            position: relative;
        }
        .hero-visual .hero-card-stack {
            position: relative;
            width: 100%;
            max-width: 420px;
            aspect-ratio: 4/3;
        }
        .hero-visual .hero-card-stack .card-layer {
            position: absolute;
            border-radius: var(--border-radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-xl);
            transition: var(--transition);
        }
        .hero-visual .hero-card-stack .card-layer:nth-child(1) {
            inset: 0;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            transform: rotate(-3deg) scale(0.92);
            opacity: 0.6;
        }
        .hero-visual .hero-card-stack .card-layer:nth-child(2) {
            inset: 0;
            background: linear-gradient(135deg, var(--secondary), #f97316);
            transform: rotate(2deg) scale(0.96);
            opacity: 0.7;
        }
        .hero-visual .hero-card-stack .card-layer:nth-child(3) {
            inset: 0;
            background: url('/assets/images/coverpic/cover-1.png') center center / cover no-repeat;
            border: 2px solid rgba(255, 255, 255, 0.15);
        }
        .hero-visual .hero-card-stack .card-layer .layer-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(26, 16, 40, 0.6), transparent 50%);
        }
        .hero-visual .hero-card-stack .card-layer .layer-tag {
            position: absolute;
            bottom: 1.2rem;
            left: 1.2rem;
            color: #fff;
            font-weight: 700;
            font-size: 1.1rem;
            text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
        }
        .hero-stats {
            display: flex;
            gap: 2.5rem;
            margin-top: 2.5rem;
            padding-top: 2rem;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
        }
        .hero-stats .stat-item .stat-num {
            font-size: 1.8rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
        }
        .hero-stats .stat-item .stat-num .num-suffix {
            color: var(--secondary);
        }
        .hero-stats .stat-item .stat-label {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.6);
            font-weight: 500;
        }

        /* ===== 通用板块 ===== */
        .section {
            padding: var(--spacing-section) 0;
        }
        .section-alt {
            background: var(--bg-white);
        }
        .section-dark {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.85);
        }
        .section-dark h2,
        .section-dark h3 {
            color: #fff;
        }
        .section-dark .text-muted {
            color: rgba(255, 255, 255, 0.55) !important;
        }

        .section-header {
            text-align: center;
            max-width: 700px;
            margin: 0 auto 3.5rem;
        }
        .section-header .section-tag {
            display: inline-block;
            padding: 0.3rem 1.2rem;
            background: rgba(108, 63, 197, 0.1);
            color: var(--primary);
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 600;
            margin-bottom: 0.8rem;
            letter-spacing: 0.04em;
        }
        .section-header h2 {
            font-size: 2.2rem;
            font-weight: 800;
            margin-bottom: 1rem;
            letter-spacing: -0.01em;
        }
        .section-header p {
            font-size: 1.05rem;
            color: var(--text-muted);
            line-height: 1.7;
        }
        .section-header.light h2 {
            color: #fff;
        }
        .section-header.light p {
            color: rgba(255, 255, 255, 0.65);
        }
        .section-header.light .section-tag {
            background: rgba(255, 255, 255, 0.1);
            color: rgba(255, 255, 255, 0.9);
        }

        /* ===== 卡片系统 ===== */
        .card-custom {
            background: var(--bg-card);
            border-radius: var(--border-radius);
            border: 1px solid var(--border-color);
            padding: 2rem;
            transition: var(--transition);
            height: 100%;
            box-shadow: var(--shadow-sm);
        }
        .card-custom:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(108, 63, 197, 0.2);
        }
        .card-custom .card-icon {
            width: 54px;
            height: 54px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: #fff;
            margin-bottom: 1.2rem;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
        }
        .card-custom .card-icon.secondary {
            background: linear-gradient(135deg, var(--secondary), var(--secondary-light));
        }
        .card-custom .card-icon.accent {
            background: linear-gradient(135deg, var(--accent), #34d399);
        }
        .card-custom .card-icon.rose {
            background: linear-gradient(135deg, #ec4899, #f472b6);
        }
        .card-custom h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 0.6rem;
        }
        .card-custom p {
            color: var(--text-secondary);
            font-size: 0.92rem;
            line-height: 1.7;
            margin-bottom: 0;
        }
        .card-custom .card-link {
            margin-top: 1rem;
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            font-weight: 600;
            font-size: 0.88rem;
            color: var(--primary);
        }
        .card-custom .card-link i {
            transition: var(--transition);
        }
        .card-custom .card-link:hover i {
            transform: translateX(4px);
        }

        /* ===== 分类入口卡片 ===== */
        .cat-card {
            position: relative;
            border-radius: var(--border-radius-lg);
            overflow: hidden;
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            transition: var(--transition);
            height: 100%;
            box-shadow: var(--shadow-sm);
        }
        .cat-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-xl);
            border-color: rgba(108, 63, 197, 0.15);
        }
        .cat-card .cat-img {
            height: 200px;
            overflow: hidden;
            position: relative;
        }
        .cat-card .cat-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .cat-card:hover .cat-img img {
            transform: scale(1.05);
        }
        .cat-card .cat-img .cat-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(26, 16, 40, 0.5), transparent 50%);
        }
        .cat-card .cat-img .cat-badge {
            position: absolute;
            top: 1rem;
            left: 1rem;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(8px);
            padding: 0.3rem 1rem;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 700;
            color: var(--primary);
        }
        .cat-card .cat-body {
            padding: 1.5rem 1.8rem 1.8rem;
        }
        .cat-card .cat-body h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
        }
        .cat-card .cat-body p {
            color: var(--text-secondary);
            font-size: 0.9rem;
            line-height: 1.7;
            margin-bottom: 1rem;
        }
        .cat-card .cat-body .cat-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.82rem;
            color: var(--text-muted);
        }
        .cat-card .cat-body .cat-meta i {
            margin-right: 0.3rem;
        }

        /* ===== 资讯列表 ===== */
        .news-list {
            display: grid;
            gap: 1.2rem;
        }
        .news-item {
            display: flex;
            align-items: flex-start;
            gap: 1.2rem;
            padding: 1.2rem 1.5rem;
            background: var(--bg-white);
            border-radius: var(--border-radius-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .news-item:hover {
            border-color: rgba(108, 63, 197, 0.2);
            box-shadow: var(--shadow-md);
            transform: translateX(4px);
        }
        .news-item .news-img {
            width: 80px;
            height: 80px;
            border-radius: 10px;
            overflow: hidden;
            flex-shrink: 0;
            background: var(--border-color);
        }
        .news-item .news-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .news-item .news-info {
            flex: 1;
            min-width: 0;
        }
        .news-item .news-info .news-title {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 0.25rem;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            line-height: 1.4;
        }
        .news-item .news-info .news-title a {
            color: inherit;
        }
        .news-item .news-info .news-title a:hover {
            color: var(--primary);
        }
        .news-item .news-info .news-desc {
            font-size: 0.85rem;
            color: var(--text-muted);
            display: -webkit-box;
            -webkit-line-clamp: 1;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 0.3rem;
        }
        .news-item .news-info .news-meta {
            display: flex;
            align-items: center;
            gap: 1rem;
            font-size: 0.75rem;
            color: var(--text-muted);
        }
        .news-item .news-info .news-meta .news-cat {
            display: inline-flex;
            align-items: center;
            gap: 0.25rem;
            padding: 0.1rem 0.6rem;
            background: rgba(108, 63, 197, 0.08);
            color: var(--primary);
            border-radius: 50px;
            font-weight: 600;
        }

        /* ===== 数据统计 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 2rem;
        }
        .stat-card {
            text-align: center;
            padding: 2.5rem 1.5rem;
            background: rgba(255, 255, 255, 0.05);
            border-radius: var(--border-radius);
            border: 1px solid rgba(255, 255, 255, 0.08);
            transition: var(--transition);
        }
        .stat-card:hover {
            background: rgba(255, 255, 255, 0.08);
            transform: translateY(-4px);
        }
        .stat-card .stat-icon {
            font-size: 2rem;
            color: var(--secondary);
            margin-bottom: 1rem;
        }
        .stat-card .stat-number {
            font-size: 2.5rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
        }
        .stat-card .stat-number .suffix {
            color: var(--secondary);
            font-size: 1.5rem;
        }
        .stat-card .stat-label {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.6);
            font-weight: 500;
            margin-top: 0.3rem;
        }

        /* ===== 流程步骤 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 2.5rem;
            position: relative;
        }
        .steps-grid::before {
            content: '';
            position: absolute;
            top: 3rem;
            left: 15%;
            right: 15%;
            height: 2px;
            background: linear-gradient(to right, var(--primary), var(--secondary), var(--accent));
            opacity: 0.3;
        }
        .step-item {
            text-align: center;
            position: relative;
            z-index: 2;
        }
        .step-item .step-num {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            font-weight: 800;
            color: #fff;
            margin: 0 auto 1.2rem;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            box-shadow: 0 8px 25px rgba(108, 63, 197, 0.3);
        }
        .step-item:nth-child(2) .step-num {
            background: linear-gradient(135deg, var(--secondary), var(--secondary-light));
            box-shadow: 0 8px 25px rgba(245, 158, 11, 0.3);
        }
        .step-item:nth-child(3) .step-num {
            background: linear-gradient(135deg, var(--accent), #34d399);
            box-shadow: 0 8px 25px rgba(16, 185, 129, 0.3);
        }
        .step-item h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
            color: #fff;
        }
        .step-item p {
            font-size: 0.88rem;
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.7;
            max-width: 280px;
            margin: 0 auto;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 0.8rem;
        }
        .faq-item {
            background: var(--bg-white);
            border-radius: var(--border-radius-sm);
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(108, 63, 197, 0.15);
        }
        .faq-item .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 1.2rem 1.5rem;
            cursor: pointer;
            font-weight: 600;
            font-size: 0.98rem;
            color: var(--text-primary);
            background: transparent;
            border: none;
            width: 100%;
            text-align: left;
            transition: var(--transition);
            gap: 1rem;
        }
        .faq-item .faq-question:hover {
            color: var(--primary);
        }
        .faq-item .faq-question .faq-icon {
            font-size: 1rem;
            color: var(--primary);
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-item.active .faq-question .faq-icon {
            transform: rotate(45deg);
        }
        .faq-item .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 1.5rem;
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 1.5rem 1.2rem;
        }
        .faq-item .faq-answer p {
            color: var(--text-secondary);
            font-size: 0.9rem;
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, #4e2a9e 100%);
            border-radius: var(--border-radius-lg);
            padding: 4rem 3rem;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.08;
            mix-blend-mode: overlay;
        }
        .cta-section .cta-content {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            font-size: 2rem;
            color: #fff;
            margin-bottom: 0.8rem;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.75);
            font-size: 1.05rem;
            max-width: 600px;
            margin: 0 auto 1.8rem;
        }
        .cta-section .cta-actions {
            display: flex;
            justify-content: center;
            gap: 1rem;
            flex-wrap: wrap;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 4rem 0 2rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 2.5rem;
            margin-bottom: 3rem;
        }
        .footer-brand .site-logo {
            color: #fff;
            margin-bottom: 1rem;
        }
        .footer-brand .site-logo .logo-text {
            background: linear-gradient(135deg, #fff, rgba(255, 255, 255, 0.7));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .footer-brand p {
            font-size: 0.88rem;
            color: rgba(255, 255, 255, 0.5);
            line-height: 1.8;
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 1.2rem;
        }
        .footer-col ul li {
            margin-bottom: 0.5rem;
        }
        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.88rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
        }
        .footer-col ul li a:hover {
            color: var(--secondary);
            transform: translateX(4px);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 1.8rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 1rem;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.35);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.4);
        }
        .footer-bottom a:hover {
            color: var(--secondary);
        }
        .footer-bottom .footer-links {
            display: flex;
            gap: 1.5rem;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 2.5rem;
                text-align: center;
                padding: 3rem 0 4rem;
            }
            .hero-content {
                max-width: 100%;
            }
            .hero-content .hero-desc {
                max-width: 100%;
                margin-left: auto;
                margin-right: auto;
            }
            .hero-actions {
                justify-content: center;
            }
            .hero-stats {
                justify-content: center;
            }
            .hero-visual .hero-card-stack {
                max-width: 320px;
                margin: 0 auto;
            }
            .hero-content h1 {
                font-size: 2.6rem;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 1.5rem;
            }
            .steps-grid {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
            .steps-grid::before {
                display: none;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 2rem;
            }
            .cta-section {
                padding: 3rem 2rem;
            }
            .section-header h2 {
                font-size: 1.8rem;
            }
        }

        @media (max-width: 768px) {
            :root {
                --spacing-section: 3rem;
                --header-height: 64px;
                --tab-height: 62px;
            }
            body {
                padding-top: var(--header-height);
                padding-bottom: var(--tab-height);
            }
            .site-header {
                height: var(--header-height);
            }
            .header-inner {
                padding: 0 1rem;
            }
            .site-logo {
                font-size: 1.1rem;
            }
            .site-logo .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 1rem;
            }
            .nav-desktop {
                display: none;
            }
            .mobile-tab-bar {
                display: block;
                height: var(--tab-height);
            }

            .hero-section {
                min-height: auto;
                padding-top: var(--header-height);
            }
            .hero-content h1 {
                font-size: 2rem;
            }
            .hero-content .hero-desc {
                font-size: 0.95rem;
            }
            .hero-stats {
                gap: 1.5rem;
                flex-wrap: wrap;
            }
            .hero-stats .stat-item .stat-num {
                font-size: 1.4rem;
            }
            .hero-visual .hero-card-stack {
                max-width: 260px;
            }

            .section {
                padding: var(--spacing-section) 0;
            }
            .section-header {
                margin-bottom: 2rem;
            }
            .section-header h2 {
                font-size: 1.5rem;
            }
            .section-header p {
                font-size: 0.92rem;
            }

            .card-custom {
                padding: 1.5rem;
            }
            .card-custom .card-icon {
                width: 44px;
                height: 44px;
                font-size: 1.2rem;
            }
            .card-custom h3 {
                font-size: 1.05rem;
            }

            .cat-card .cat-img {
                height: 150px;
            }
            .cat-card .cat-body {
                padding: 1.2rem 1.2rem 1.5rem;
            }

            .news-item {
                flex-direction: column;
                padding: 1rem;
                gap: 0.8rem;
            }
            .news-item .news-img {
                width: 100%;
                height: 140px;
            }
            .news-item .news-info .news-title {
                font-size: 0.92rem;
            }

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 1rem;
            }
            .stat-card {
                padding: 1.5rem 1rem;
            }
            .stat-card .stat-number {
                font-size: 1.8rem;
            }

            .steps-grid {
                grid-template-columns: 1fr;
                gap: 1.8rem;
            }
            .step-item {
                display: flex;
                align-items: flex-start;
                text-align: left;
                gap: 1.2rem;
            }
            .step-item .step-num {
                margin: 0;
                flex-shrink: 0;
                width: 44px;
                height: 44px;
                font-size: 1rem;
            }
            .step-item p {
                max-width: 100%;
                margin: 0;
            }

            .faq-item .faq-question {
                padding: 1rem 1.2rem;
                font-size: 0.9rem;
            }
            .faq-item .faq-answer {
                padding: 0 1.2rem;
            }
            .faq-item.active .faq-answer {
                padding: 0 1.2rem 1rem;
            }

            .cta-section {
                padding: 2.5rem 1.5rem;
                border-radius: var(--border-radius);
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.8rem;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .footer-bottom .footer-links {
                justify-content: center;
                flex-wrap: wrap;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding-left: 0.9rem;
                padding-right: 0.9rem;
            }
            .hero-content h1 {
                font-size: 1.6rem;
            }
            .hero-stats .stat-item .stat-num {
                font-size: 1.2rem;
            }
            .hero-actions {
                flex-direction: column;
                align-items: center;
            }
            .hero-actions .btn {
                width: 100%;
                max-width: 260px;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 0.8rem;
            }
            .stat-card .stat-number {
                font-size: 1.5rem;
            }
            .section-header h2 {
                font-size: 1.3rem;
            }
            .mobile-tab-bar .tab-item {
                min-width: 56px;
                padding: 0.2rem 0.4rem;
            }
            .mobile-tab-bar .tab-item i {
                font-size: 1.1rem;
            }
            .mobile-tab-bar .tab-item .tab-label {
                font-size: 0.55rem;
            }
            .cta-section .cta-actions {
                flex-direction: column;
                align-items: center;
            }
            .cta-section .cta-actions .btn {
                width: 100%;
                max-width: 260px;
            }
        }

        /* ===== 工具类 ===== */
        .text-gradient {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .gap-grid {
            gap: 1.8rem;
        }
        .mb-0 {
            margin-bottom: 0;
        }
        .mt-1 {
            margin-top: 0.5rem;
        }
        .mt-2 {
            margin-top: 1rem;
        }
        .mt-3 {
            margin-top: 1.5rem;
        }
        .mt-4 {
            margin-top: 2rem;
        }

/* roulang page: article */
:root {
            --primary: #6c3fc5;
            --primary-dark: #522ea0;
            --primary-light: #8b5fd6;
            --secondary: #f59e0b;
            --secondary-light: #fbbf24;
            --accent: #10b981;
            --bg-dark: #0f0a1a;
            --bg-darker: #0a0714;
            --bg-card: #1a1228;
            --bg-card-hover: #221a32;
            --bg-section: #120c1e;
            --text-primary: #f1e8ff;
            --text-secondary: #c4b5e3;
            --text-muted: #8b7aab;
            --border-color: #2d2142;
            --border-light: #3d2d5a;
            --shadow-sm: 0 2px 8px rgba(108, 63, 197, 0.12);
            --shadow-md: 0 8px 32px rgba(108, 63, 197, 0.18);
            --shadow-lg: 0 16px 48px rgba(108, 63, 197, 0.25);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
        }

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

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

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

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

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

        .container-narrow {
            max-width: 880px;
            padding: 0 24px;
            margin: 0 auto;
        }

        /* Header */
        .site-header {
            background: linear-gradient(135deg, var(--bg-darker) 0%, var(--bg-dark) 100%);
            border-bottom: 1px solid var(--border-color);
            padding: 0 24px;
            position: sticky;
            top: 0;
            z-index: 1000;
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
        }

        .header-inner {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }

        .site-logo {
            display: flex;
            align-items: center;
            gap: 12px;
            font-weight: 700;
            font-size: 1.35rem;
            color: var(--text-primary) !important;
            letter-spacing: 0.5px;
        }

        .site-logo .logo-icon {
            width: 42px;
            height: 42px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            color: #fff;
            box-shadow: 0 4px 12px rgba(108, 63, 197, 0.35);
        }

        .site-logo .logo-text {
            background: linear-gradient(90deg, var(--text-primary), var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

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

        .nav-desktop .nav-link {
            padding: 10px 20px;
            border-radius: 10px;
            color: var(--text-secondary);
            font-weight: 500;
            font-size: 0.95rem;
            transition: var(--transition);
            position: relative;
        }

        .nav-desktop .nav-link i {
            margin-right: 6px;
            font-size: 0.9rem;
        }

        .nav-desktop .nav-link:hover {
            color: var(--text-primary);
            background: rgba(108, 63, 197, 0.15);
        }

        .nav-desktop .nav-link.active {
            color: #fff;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            box-shadow: 0 4px 16px rgba(108, 63, 197, 0.3);
        }

        .nav-desktop .nav-link.active i {
            color: var(--secondary-light);
        }

        /* Mobile Bottom Tab */
        .mobile-bottom-tab {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            background: linear-gradient(180deg, rgba(15, 10, 26, 0.98), rgba(10, 7, 20, 0.98));
            border-top: 1px solid var(--border-color);
            z-index: 1001;
            padding: 6px 0;
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
        }

        .mobile-bottom-tab .tab-inner {
            display: flex;
            justify-content: space-around;
            align-items: center;
            max-width: 500px;
            margin: 0 auto;
        }

        .mobile-bottom-tab .tab-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            padding: 6px 12px;
            border-radius: 12px;
            color: var(--text-muted);
            font-size: 0.7rem;
            font-weight: 500;
            transition: var(--transition);
            min-width: 60px;
        }

        .mobile-bottom-tab .tab-item i {
            font-size: 1.3rem;
            margin-bottom: 2px;
        }

        .mobile-bottom-tab .tab-item:hover {
            color: var(--text-secondary);
            background: rgba(108, 63, 197, 0.1);
        }

        .mobile-bottom-tab .tab-item.active {
            color: var(--secondary);
        }

        .mobile-bottom-tab .tab-item.active i {
            color: var(--secondary);
            text-shadow: 0 0 20px rgba(245, 158, 11, 0.3);
        }

        /* Article Hero */
        .article-hero {
            padding: 60px 0 40px;
            background: linear-gradient(135deg, var(--bg-darker) 0%, var(--bg-section) 100%);
            border-bottom: 1px solid var(--border-color);
            position: relative;
            overflow: hidden;
        }

        .article-hero::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(108, 63, 197, 0.08), transparent 70%);
            pointer-events: none;
        }

        .article-hero .breadcrumb-custom {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 20px;
            flex-wrap: wrap;
        }

        .article-hero .breadcrumb-custom a {
            color: var(--text-muted);
        }

        .article-hero .breadcrumb-custom a:hover {
            color: var(--primary-light);
        }

        .article-hero .breadcrumb-custom .sep {
            color: var(--border-light);
        }

        .article-hero .breadcrumb-custom .current {
            color: var(--text-secondary);
        }

        .article-hero .article-hero-title {
            font-size: 2.2rem;
            font-weight: 800;
            line-height: 1.3;
            color: var(--text-primary);
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }

        .article-hero .article-meta {
            display: flex;
            align-items: center;
            gap: 20px;
            flex-wrap: wrap;
            font-size: 0.9rem;
            color: var(--text-muted);
        }

        .article-hero .article-meta .meta-item {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .article-hero .article-meta .meta-item i {
            color: var(--primary-light);
        }

        .article-hero .article-meta .category-badge {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 20px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            font-size: 0.8rem;
            font-weight: 600;
        }

        /* Article Content */
        .article-main {
            padding: 50px 0 80px;
            background: var(--bg-dark);
        }

        .article-body {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 48px;
            line-height: 1.9;
            font-size: 1.05rem;
            color: var(--text-secondary);
        }

        .article-body h2 {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--text-primary);
            margin: 36px 0 16px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--border-color);
        }

        .article-body h3 {
            font-size: 1.25rem;
            font-weight: 600;
            color: var(--text-primary);
            margin: 28px 0 12px;
        }

        .article-body p {
            margin-bottom: 18px;
        }

        .article-body ul,
        .article-body ol {
            margin-bottom: 18px;
            padding-left: 24px;
        }

        .article-body li {
            margin-bottom: 8px;
        }

        .article-body strong {
            color: var(--text-primary);
            font-weight: 600;
        }

        .article-body a {
            color: var(--secondary);
            text-decoration: underline;
            text-underline-offset: 3px;
        }

        .article-body a:hover {
            color: var(--secondary-light);
        }

        .article-body img {
            border-radius: var(--radius-sm);
            margin: 24px 0;
            box-shadow: var(--shadow-md);
        }

        .article-body blockquote {
            border-left: 4px solid var(--primary);
            padding: 16px 24px;
            margin: 24px 0;
            background: rgba(108, 63, 197, 0.06);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-secondary);
            font-style: italic;
        }

        .article-body .content-image-wrapper {
            text-align: center;
            margin: 32px 0;
        }

        .article-body .content-image-wrapper img {
            max-width: 100%;
            border-radius: var(--radius-sm);
        }

        .article-body .content-image-wrapper .image-caption {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-top: 8px;
        }

        .article-not-found {
            text-align: center;
            padding: 80px 24px;
        }

        .article-not-found .not-found-icon {
            font-size: 4rem;
            color: var(--text-muted);
            margin-bottom: 24px;
        }

        .article-not-found h2 {
            font-size: 1.8rem;
            color: var(--text-primary);
            margin-bottom: 16px;
        }

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

        .article-not-found .btn-home {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            font-weight: 600;
            font-size: 1rem;
            transition: var(--transition);
            border: none;
            cursor: pointer;
        }

        .article-not-found .btn-home:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(108, 63, 197, 0.35);
            color: #fff;
        }

        /* Article Footer Nav */
        .article-footer-nav {
            margin-top: 40px;
            padding-top: 32px;
            border-top: 1px solid var(--border-color);
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
        }

        .article-footer-nav .nav-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 24px;
            border-radius: 10px;
            background: var(--bg-card-hover);
            color: var(--text-secondary);
            font-weight: 500;
            font-size: 0.9rem;
            transition: var(--transition);
            border: 1px solid var(--border-color);
        }

        .article-footer-nav .nav-btn:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            transform: translateY(-2px);
        }

        /* CTA */
        .article-cta {
            padding: 60px 0;
            background: linear-gradient(135deg, var(--bg-section), var(--bg-darker));
            border-top: 1px solid var(--border-color);
            text-align: center;
        }

        .article-cta h3 {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 12px;
        }

        .article-cta p {
            color: var(--text-muted);
            font-size: 1.05rem;
            max-width: 600px;
            margin: 0 auto 24px;
        }

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

        .article-cta .btn-cta-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 16px 36px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            font-weight: 600;
            font-size: 1rem;
            transition: var(--transition);
            border: none;
            cursor: pointer;
        }

        .article-cta .btn-cta-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 32px rgba(108, 63, 197, 0.35);
            color: #fff;
        }

        .article-cta .btn-cta-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 16px 36px;
            border-radius: 12px;
            background: transparent;
            color: var(--text-secondary);
            font-weight: 600;
            font-size: 1rem;
            border: 2px solid var(--border-color);
            transition: var(--transition);
        }

        .article-cta .btn-cta-secondary:hover {
            border-color: var(--primary);
            color: var(--text-primary);
            transform: translateY(-3px);
        }

        /* Footer */
        .site-footer {
            background: var(--bg-darker);
            border-top: 1px solid var(--border-color);
            padding: 60px 0 30px;
        }

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

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

        .footer-brand p {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.7;
            max-width: 320px;
        }

        .footer-col h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }

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

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

        .footer-col ul li a {
            color: var(--text-muted);
            font-size: 0.9rem;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: var(--transition);
        }

        .footer-col ul li a i {
            font-size: 0.65rem;
            color: var(--border-light);
        }

        .footer-col ul li a:hover {
            color: var(--primary-light);
            transform: translateX(4px);
        }

        .footer-bottom {
            border-top: 1px solid var(--border-color);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        .footer-bottom .footer-links {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        .footer-bottom .footer-links a {
            color: var(--text-muted);
            font-size: 0.85rem;
        }

        .footer-bottom .footer-links a:hover {
            color: var(--primary-light);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }

            .article-hero .article-hero-title {
                font-size: 1.8rem;
            }

            .article-body {
                padding: 32px;
            }
        }

        @media (max-width: 768px) {
            .nav-desktop {
                display: none !important;
            }

            .mobile-bottom-tab {
                display: block;
            }

            .site-header {
                padding: 0 16px;
            }

            .header-inner {
                height: 64px;
            }

            .site-logo .logo-text {
                font-size: 1.1rem;
            }

            .site-logo .logo-icon {
                width: 36px;
                height: 36px;
                font-size: 1rem;
            }

            .article-hero {
                padding: 40px 0 30px;
            }

            .article-hero .article-hero-title {
                font-size: 1.5rem;
            }

            .article-hero .article-meta {
                gap: 12px;
                font-size: 0.8rem;
            }

            .article-main {
                padding: 30px 0 60px;
            }

            .article-body {
                padding: 24px 20px;
                font-size: 0.95rem;
                border-radius: var(--radius-sm);
            }

            .article-body h2 {
                font-size: 1.3rem;
            }

            .article-body h3 {
                font-size: 1.1rem;
            }

            .article-cta h3 {
                font-size: 1.4rem;
            }

            .article-cta .btn-cta-primary,
            .article-cta .btn-cta-secondary {
                padding: 14px 28px;
                font-size: 0.9rem;
                width: 100%;
                justify-content: center;
            }

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

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

            .footer-bottom .footer-links {
                justify-content: center;
            }

            .article-footer-nav {
                flex-direction: column;
                align-items: stretch;
            }

            .article-footer-nav .nav-btn {
                justify-content: center;
            }

            body {
                padding-bottom: 70px;
            }
        }

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

            .article-hero .article-hero-title {
                font-size: 1.3rem;
            }

            .article-body {
                padding: 16px;
                font-size: 0.9rem;
            }

            .article-body h2 {
                font-size: 1.15rem;
            }

            .mobile-bottom-tab .tab-item {
                padding: 4px 8px;
                min-width: 48px;
                font-size: 0.6rem;
            }

            .mobile-bottom-tab .tab-item i {
                font-size: 1.1rem;
            }
        }

        /* Scrollbar */
        ::-webkit-scrollbar {
            width: 8px;
        }
        ::-webkit-scrollbar-track {
            background: var(--bg-darker);
        }
        ::-webkit-scrollbar-thumb {
            background: var(--border-color);
            border-radius: 4px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: var(--border-light);
        }

        /* Selection */
        ::selection {
            background: var(--primary);
            color: #fff;
        }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #6c5ce7;
            --primary-dark: #5a4bd1;
            --primary-light: #a29bfe;
            --secondary: #fd79a8;
            --accent: #fdcb6e;
            --bg-dark: #0f0a1e;
            --bg-section: #f8f7ff;
            --bg-card: #ffffff;
            --text-dark: #1a1a2e;
            --text-muted: #6c6c8a;
            --text-light: #f0f0f8;
            --border-light: rgba(108,92,231,0.15);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --shadow-sm: 0 4px 12px rgba(108,92,231,0.08);
            --shadow-md: 0 8px 30px rgba(108,92,231,0.12);
            --shadow-lg: 0 20px 50px rgba(108,92,231,0.15);
            --font-main: 'Segoe UI', system-ui, -apple-system, 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body {
            font-family: var(--font-main);
            color: var(--text-dark);
            background: var(--bg-dark);
            line-height: 1.7;
            overflow-x: hidden;
        }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
        a { color: var(--primary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary-dark); }
        ul { list-style: none; padding: 0; margin: 0; }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 20px; width: 100%; }

        /* ===== Header / Nav ===== */
        .site-header {
            background: rgba(15,10,30,0.95);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(108,92,231,0.15);
            position: sticky;
            top: 0;
            z-index: 1000;
            padding: 0 0;
            transition: var(--transition);
        }
        .header-inner {
            max-width: 1200px;
            margin: 0 auto;
            padding: 12px 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            color: #fff;
            font-weight: 700;
            font-size: 1.4rem;
            letter-spacing: -0.3px;
            transition: var(--transition);
        }
        .site-logo:hover { color: var(--primary-light); transform: scale(1.02); }
        .logo-icon {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.2rem;
            box-shadow: 0 4px 15px rgba(108,92,231,0.3);
        }
        .logo-text { font-size: 1.25rem; }

        .nav-desktop { display: flex; align-items: center; gap: 6px; }
        .nav-link {
            padding: 8px 18px;
            border-radius: 50px;
            color: rgba(255,255,255,0.7);
            font-size: 0.95rem;
            font-weight: 500;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 7px;
            white-space: nowrap;
        }
        .nav-link i { font-size: 0.9rem; }
        .nav-link:hover {
            color: #fff;
            background: rgba(108,92,231,0.2);
        }
        .nav-link.active {
            color: #fff;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            box-shadow: 0 4px 15px rgba(108,92,231,0.35);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #0f0a1e;
            border-top: 1px solid rgba(108,92,231,0.12);
            padding: 60px 0 30px;
            color: rgba(255,255,255,0.8);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.8fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .site-logo { font-size: 1.2rem; margin-bottom: 16px; display: inline-flex; }
        .footer-brand p { font-size: 0.92rem; color: rgba(255,255,255,0.55); max-width: 360px; line-height: 1.8; }
        .footer-col h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 18px;
            letter-spacing: 0.3px;
        }
        .footer-col ul li { margin-bottom: 10px; }
        .footer-col ul li a {
            color: rgba(255,255,255,0.55);
            font-size: 0.9rem;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .footer-col ul li a i { font-size: 0.65rem; }
        .footer-col ul li a:hover { color: var(--primary-light); transform: translateX(4px); }
        .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(255,255,255,0.35);
        }
        .footer-links { display: flex; gap: 18px; flex-wrap: wrap; }
        .footer-links a { color: rgba(255,255,255,0.4); font-size: 0.85rem; transition: var(--transition); }
        .footer-links a:hover { color: var(--primary-light); }

        /* ===== 页面通用 ===== */
        .page-banner {
            position: relative;
            padding: 100px 0 80px;
            background: linear-gradient(135deg, #0f0a1e 0%, #1a1040 50%, #0f0a1e 100%);
            overflow: hidden;
            text-align: center;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.15;
            z-index: 0;
        }
        .page-banner::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(15,10,30,0.7) 0%, rgba(15,10,30,0.9) 100%);
            z-index: 1;
        }
        .page-banner .container { position: relative; z-index: 2; }
        .page-banner h1 {
            font-size: 2.8rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
            text-shadow: 0 2px 20px rgba(108,92,231,0.3);
        }
        .page-banner h1 i { color: var(--primary-light); margin-right: 10px; }
        .page-banner p {
            font-size: 1.15rem;
            color: rgba(255,255,255,0.7);
            max-width: 640px;
            margin: 0 auto;
            line-height: 1.8;
        }
        .page-banner .breadcrumb-custom {
            display: flex;
            justify-content: center;
            gap: 10px;
            margin-bottom: 20px;
            font-size: 0.9rem;
            color: rgba(255,255,255,0.5);
        }
        .page-banner .breadcrumb-custom a { color: var(--primary-light); }
        .page-banner .breadcrumb-custom a:hover { color: #fff; }
        .breadcrumb-custom span { color: rgba(255,255,255,0.4); }

        .section-block {
            padding: 80px 0;
            background: var(--bg-section);
        }
        .section-block:nth-child(even) { background: #fff; }
        .section-title {
            text-align: center;
            margin-bottom: 50px;
        }
        .section-title h2 {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }
        .section-title h2 i { color: var(--primary); margin-right: 8px; }
        .section-title p {
            color: var(--text-muted);
            max-width: 560px;
            margin: 0 auto;
            font-size: 1.05rem;
        }
        .title-accent {
            display: inline-block;
            width: 50px;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            border-radius: 4px;
            margin-top: 10px;
        }

        /* ===== 流程步骤 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .step-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 32px 24px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
            position: relative;
        }
        .step-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: var(--primary-light);
        }
        .step-number {
            width: 48px;
            height: 48px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            font-weight: 700;
            margin: 0 auto 18px;
            box-shadow: 0 6px 20px rgba(108,92,231,0.25);
        }
        .step-card h4 { font-size: 1.1rem; font-weight: 600; margin-bottom: 10px; color: var(--text-dark); }
        .step-card p { font-size: 0.92rem; color: var(--text-muted); line-height: 1.7; }

        /* ===== 功能卡片 ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .feature-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 32px 28px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .feature-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-md);
            border-color: var(--primary-light);
        }
        .feature-icon {
            width: 56px;
            height: 56px;
            background: linear-gradient(135deg, rgba(108,92,231,0.1), rgba(253,121,168,0.1));
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--primary);
            margin-bottom: 18px;
            transition: var(--transition);
        }
        .feature-card:hover .feature-icon {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #fff;
            transform: scale(1.05);
        }
        .feature-card h4 { font-size: 1.1rem; font-weight: 600; margin-bottom: 10px; color: var(--text-dark); }
        .feature-card p { font-size: 0.92rem; color: var(--text-muted); line-height: 1.7; flex: 1; }
        .feature-card .tag {
            display: inline-block;
            padding: 4px 14px;
            background: rgba(108,92,231,0.08);
            color: var(--primary);
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 600;
            margin-top: 14px;
            align-self: flex-start;
        }

        /* ===== 图文区块 ===== */
        .media-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }
        .media-block.reverse { direction: rtl; }
        .media-block.reverse > * { direction: ltr; }
        .media-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            background: #eee;
            min-height: 300px;
            background-size: cover;
            background-position: center;
        }
        .media-content h3 {
            font-size: 1.6rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text-dark);
        }
        .media-content h3 i { color: var(--primary); margin-right: 8px; }
        .media-content p {
            color: var(--text-muted);
            font-size: 1rem;
            line-height: 1.8;
            margin-bottom: 16px;
        }
        .media-content ul { display: flex; flex-direction: column; gap: 10px; }
        .media-content ul li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            color: var(--text-dark);
            font-size: 0.95rem;
        }
        .media-content ul li i {
            color: var(--primary);
            margin-top: 4px;
            font-size: 0.85rem;
        }

        /* ===== 统计数字 ===== */
        .stats-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
        }
        .stat-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 32px 16px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .stat-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .stat-number {
            font-size: 2.4rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .stat-label { font-size: 0.95rem; color: var(--text-muted); margin-top: 6px; font-weight: 500; }

        /* ===== 技巧列表 ===== */
        .tips-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }
        .tip-item {
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            padding: 20px 24px;
            border-left: 4px solid var(--primary);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            display: flex;
            gap: 14px;
            align-items: flex-start;
        }
        .tip-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateX(4px);
        }
        .tip-item i {
            color: var(--primary);
            font-size: 1.1rem;
            margin-top: 3px;
            flex-shrink: 0;
        }
        .tip-item strong { display: block; font-weight: 600; margin-bottom: 4px; color: var(--text-dark); }
        .tip-item span { font-size: 0.9rem; color: var(--text-muted); }

        /* ===== FAQ ===== */
        .faq-grid {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover { border-color: var(--primary-light); }
        .faq-question {
            padding: 18px 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-dark);
            background: transparent;
            border: none;
            width: 100%;
            text-align: left;
            transition: var(--transition);
        }
        .faq-question i { color: var(--primary); margin-right: 10px; }
        .faq-question .faq-toggle { color: var(--primary); transition: var(--transition); }
        .faq-item.active .faq-toggle { transform: rotate(180deg); }
        .faq-answer {
            padding: 0 24px 18px;
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.8;
            display: none;
        }
        .faq-item.active .faq-answer { display: block; }

        /* ===== CTA ===== */
        .cta-block {
            background: linear-gradient(135deg, var(--primary-dark), #2d1b69);
            border-radius: var(--radius-lg);
            padding: 60px 40px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-block::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.08;
        }
        .cta-block h3 { font-size: 1.8rem; font-weight: 700; color: #fff; margin-bottom: 14px; position: relative; }
        .cta-block p { color: rgba(255,255,255,0.7); max-width: 520px; margin: 0 auto 28px; font-size: 1.05rem; position: relative; }
        .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 36px;
            background: #fff;
            color: var(--primary-dark);
            font-weight: 700;
            font-size: 1.05rem;
            border-radius: 50px;
            transition: var(--transition);
            box-shadow: 0 8px 30px rgba(0,0,0,0.15);
            position: relative;
        }
        .cta-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(0,0,0,0.25);
            color: var(--primary);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .footer-grid { grid-template-columns: 1fr 1fr; }
            .steps-grid { grid-template-columns: repeat(2, 1fr); }
            .features-grid { grid-template-columns: repeat(2, 1fr); }
            .stats-row { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 768px) {
            .header-inner { padding: 10px 16px; flex-wrap: wrap; }
            .logo-text { font-size: 1.05rem; }
            .nav-desktop { overflow-x: auto; gap: 4px; -webkit-overflow-scrolling: touch; }
            .nav-link { padding: 6px 14px; font-size: 0.85rem; white-space: nowrap; }
            .nav-link i { font-size: 0.8rem; }
            .page-banner { padding: 60px 0 50px; }
            .page-banner h1 { font-size: 1.8rem; }
            .page-banner p { font-size: 0.95rem; }

            .section-block { padding: 50px 0; }
            .section-title h2 { font-size: 1.5rem; }

            .steps-grid { grid-template-columns: 1fr 1fr; gap: 16px; }
            .step-card { padding: 24px 16px; }

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

            .media-block { grid-template-columns: 1fr; gap: 28px; }
            .media-block.reverse { direction: ltr; }
            .media-image { min-height: 220px; }

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

            .tips-list { grid-template-columns: 1fr; }

            .footer-grid { grid-template-columns: 1fr; gap: 30px; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .footer-links { justify-content: center; }

            .cta-block { padding: 40px 24px; }
            .cta-block h3 { font-size: 1.3rem; }
        }
        @media (max-width: 520px) {
            .steps-grid { grid-template-columns: 1fr; }
            .stats-row { grid-template-columns: 1fr; }
            .page-banner h1 { font-size: 1.4rem; }
            .nav-desktop { gap: 2px; }
            .nav-link { padding: 5px 10px; font-size: 0.78rem; }
            .nav-link i { display: none; }
            .logo-text { font-size: 0.95rem; }
            .logo-icon { width: 34px; height: 34px; font-size: 1rem; }
        }

        /* ===== 工具 ===== */
        .mt-1 { margin-top: 10px; }
        .mb-1 { margin-bottom: 10px; }
        .gap-1 { gap: 10px; }
        .text-center { text-align: center; }
        .rounded-full { border-radius: 50px; }

/* roulang page: category2 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #6c3fc5;
            --primary-dark: #4e2a8f;
            --primary-light: #8b6ad8;
            --primary-gradient: linear-gradient(135deg, #6c3fc5 0%, #9b6eff 100%);
            --secondary: #f59e0b;
            --secondary-light: #fbbf24;
            --accent: #ec4899;
            --bg-body: #f8f7fc;
            --bg-white: #ffffff;
            --bg-dark: #1a1028;
            --bg-card: #ffffff;
            --text-dark: #1e1432;
            --text-body: #3d2e5c;
            --text-muted: #8a7aaa;
            --text-light: #b8a8d8;
            --border-color: #e8e2f0;
            --border-light: #f0ecf5;
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --shadow-sm: 0 2px 8px rgba(108, 63, 197, 0.06);
            --shadow-md: 0 8px 30px rgba(108, 63, 197, 0.10);
            --shadow-lg: 0 20px 60px rgba(108, 63, 197, 0.15);
            --shadow-hover: 0 16px 48px rgba(108, 63, 197, 0.20);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            --container-max: 1200px;
            --header-height: 72px;
        }

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

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

        body {
            font-family: var(--font-family);
            background-color: var(--bg-body);
            color: var(--text-body);
            line-height: 1.7;
            margin: 0;
            padding: 0;
            padding-top: var(--header-height);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

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

        /* ===== Header / 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1040;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-light);
            height: var(--header-height);
            transition: var(--transition);
        }
        .site-header.scrolled {
            box-shadow: var(--shadow-md);
            background: rgba(255, 255, 255, 0.97);
        }
        .header-inner {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            text-decoration: none;
            color: var(--text-dark);
            font-weight: 700;
            font-size: 1.35rem;
            letter-spacing: -0.3px;
            transition: var(--transition);
        }
        .site-logo:hover {
            color: var(--primary);
            transform: scale(1.02);
        }
        .logo-icon {
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            background: var(--primary-gradient);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.2rem;
            box-shadow: 0 4px 12px rgba(108, 63, 197, 0.30);
        }
        .logo-text {
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        /* 桌面导航 */
        .nav-desktop {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 20px;
            border-radius: 100px;
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-body);
            transition: var(--transition);
            text-decoration: none;
            position: relative;
        }
        .nav-link i {
            font-size: 0.9rem;
            color: var(--text-muted);
            transition: var(--transition);
        }
        .nav-link:hover {
            background: var(--border-light);
            color: var(--primary);
        }
        .nav-link:hover i {
            color: var(--primary-light);
        }
        .nav-link.active {
            background: var(--primary-gradient);
            color: #fff;
            box-shadow: 0 4px 16px rgba(108, 63, 197, 0.30);
        }
        .nav-link.active i {
            color: rgba(255, 255, 255, 0.90);
        }

        /* 移动端菜单切换 */
        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.6rem;
            color: var(--text-dark);
            cursor: pointer;
            padding: 4px 8px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }
        .mobile-toggle:hover {
            background: var(--border-light);
        }

        /* ===== Mobile Bottom Tab ===== */
        .mobile-bottom-tab {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 1030;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-top: 1px solid var(--border-light);
            padding: 6px 0 env(safe-area-inset-bottom, 6px) 0;
            box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.06);
        }
        .bottom-tab-inner {
            display: flex;
            justify-content: space-around;
            align-items: center;
            max-width: 500px;
            margin: 0 auto;
        }
        .bottom-tab-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 2px;
            padding: 6px 12px;
            border-radius: var(--radius-md);
            text-decoration: none;
            color: var(--text-muted);
            font-size: 0.65rem;
            font-weight: 500;
            transition: var(--transition);
            border: none;
            background: none;
            cursor: pointer;
            min-width: 60px;
        }
        .bottom-tab-item i {
            font-size: 1.25rem;
            transition: var(--transition);
        }
        .bottom-tab-item:hover {
            color: var(--primary);
            background: var(--border-light);
        }
        .bottom-tab-item.active {
            color: var(--primary);
        }
        .bottom-tab-item.active i {
            color: var(--primary);
            text-shadow: 0 0 20px rgba(108, 63, 197, 0.20);
        }

        /* ===== Hero / 分类 Banner ===== */
        .category-hero {
            position: relative;
            padding: 80px 0 72px;
            background: var(--bg-dark);
            overflow: hidden;
            min-height: 320px;
            display: flex;
            align-items: center;
        }
        .category-hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center 30%;
            opacity: 0.35;
            z-index: 0;
        }
        .category-hero-bg::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(26, 16, 40, 0.85) 0%, rgba(108, 63, 197, 0.40) 100%);
            z-index: 1;
        }
        .category-hero .container {
            position: relative;
            z-index: 2;
        }
        .category-hero h1 {
            font-size: 3rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }
        .category-hero h1 i {
            color: var(--secondary);
            margin-right: 12px;
        }
        .category-hero .hero-desc {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.80);
            max-width: 640px;
            line-height: 1.7;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, 0.12);
            backdrop-filter: blur(8px);
            color: #fff;
            padding: 6px 18px;
            border-radius: 100px;
            font-size: 0.85rem;
            font-weight: 500;
            margin-bottom: 20px;
            border: 1px solid rgba(255, 255, 255, 0.10);
        }
        .hero-badge i {
            color: var(--secondary);
        }

        /* ===== 板块通用 ===== */
        .section-block {
            padding: 72px 0;
        }
        .section-block-alt {
            background: var(--bg-white);
        }
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }
        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 600px;
            margin-bottom: 40px;
            line-height: 1.7;
        }
        .section-title-center {
            text-align: center;
        }
        .section-subtitle-center {
            text-align: center;
            margin-left: auto;
            margin-right: auto;
        }
        .divider-center {
            width: 60px;
            height: 4px;
            background: var(--primary-gradient);
            border-radius: 4px;
            margin: 0 auto 16px;
        }

        /* ===== 攻略卡片 ===== */
        .strategy-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .strategy-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .strategy-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: var(--primary-light);
        }
        .strategy-card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            display: block;
            transition: var(--transition);
        }
        .strategy-card:hover .strategy-card-img {
            transform: scale(1.03);
        }
        .strategy-card-body {
            padding: 24px 24px 28px;
        }
        .strategy-card-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 12px;
        }
        .strategy-tag {
            display: inline-block;
            padding: 3px 12px;
            border-radius: 100px;
            font-size: 0.75rem;
            font-weight: 600;
            background: var(--border-light);
            color: var(--primary);
            transition: var(--transition);
        }
        .strategy-tag.hot {
            background: #fef2f2;
            color: #dc2626;
        }
        .strategy-tag.new {
            background: #ecfdf5;
            color: #059669;
        }
        .strategy-tag.tip {
            background: #eff6ff;
            color: #2563eb;
        }
        .strategy-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .strategy-card p {
            font-size: 0.92rem;
            color: var(--text-muted);
            line-height: 1.65;
            margin-bottom: 16px;
        }
        .strategy-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.82rem;
            color: var(--text-muted);
            border-top: 1px solid var(--border-light);
            padding-top: 14px;
        }
        .strategy-meta i {
            margin-right: 4px;
        }
        .strategy-meta .views {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        /* ===== 分类标签 ===== */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: center;
            margin-bottom: 32px;
        }
        .tag-cloud .tag-item {
            padding: 8px 20px;
            border-radius: 100px;
            font-size: 0.88rem;
            font-weight: 500;
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            color: var(--text-body);
            transition: var(--transition);
            cursor: default;
        }
        .tag-cloud .tag-item:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(108, 63, 197, 0.25);
        }
        .tag-cloud .tag-item.active {
            background: var(--primary-gradient);
            color: #fff;
            border-color: transparent;
            box-shadow: 0 4px 16px rgba(108, 63, 197, 0.30);
        }
        .tag-cloud .tag-item i {
            margin-right: 6px;
            font-size: 0.8rem;
        }

        /* ===== 攻略流程 ===== */
        .flow-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            counter-reset: step-counter;
        }
        .flow-step {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 32px 24px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
            position: relative;
        }
        .flow-step:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .flow-step .step-number {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--primary-gradient);
            color: #fff;
            font-size: 1.4rem;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            box-shadow: 0 8px 24px rgba(108, 63, 197, 0.25);
        }
        .flow-step h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 8px;
        }
        .flow-step p {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 0;
        }
        .flow-arrow {
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: var(--primary-light);
            opacity: 0.5;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
            margin-bottom: 12px;
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--primary-light);
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-dark);
            cursor: pointer;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            transition: var(--transition);
            gap: 16px;
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question i {
            color: var(--primary);
            transition: var(--transition);
            font-size: 1.1rem;
            flex-shrink: 0;
        }
        .faq-question .faq-toggle {
            color: var(--text-muted);
            transition: var(--transition);
        }
        .faq-item.active .faq-toggle {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-answer {
            padding: 0 24px 18px;
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.7;
            display: none;
        }
        .faq-item.active .faq-answer {
            display: block;
        }

        /* ===== CTA ===== */
        .cta-block {
            background: var(--primary-gradient);
            border-radius: var(--radius-lg);
            padding: 56px 48px;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .cta-block::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center/cover no-repeat;
            opacity: 0.08;
            z-index: 0;
        }
        .cta-block .container {
            position: relative;
            z-index: 1;
        }
        .cta-block h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: #fff;
        }
        .cta-block p {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 560px;
            margin: 0 auto 28px;
        }
        .cta-block .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 36px;
            border-radius: 100px;
            font-size: 1.05rem;
            font-weight: 600;
            background: #fff;
            color: var(--primary);
            border: none;
            transition: var(--transition);
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.15);
        }
        .cta-block .btn-cta:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.25);
            background: var(--secondary);
            color: #fff;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.75);
            padding: 60px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 36px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .footer-brand .site-logo {
            color: #fff;
            margin-bottom: 14px;
        }
        .footer-brand .site-logo .logo-text {
            -webkit-text-fill-color: #fff;
            background: none;
        }
        .footer-brand p {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.55);
            line-height: 1.7;
            max-width: 320px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 18px;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.9rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .footer-col ul li a i {
            font-size: 0.65rem;
            color: rgba(255, 255, 255, 0.2);
            transition: var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--secondary);
        }
        .footer-col ul li a:hover i {
            color: var(--secondary);
        }
        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            padding: 24px 0;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.35);
        }
        .footer-links {
            display: flex;
            gap: 20px;
            align-items: center;
        }
        .footer-links a {
            color: rgba(255, 255, 255, 0.35);
            transition: var(--transition);
            font-size: 0.82rem;
        }
        .footer-links a:hover {
            color: var(--secondary);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .strategy-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .flow-steps {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .category-hero h1 {
                font-size: 2.4rem;
            }
        }

        @media (max-width: 768px) {
            .nav-desktop {
                display: none;
            }
            .mobile-toggle {
                display: block;
            }
            .nav-desktop.open {
                display: flex;
                flex-direction: column;
                position: absolute;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(18px);
                padding: 16px 24px;
                border-bottom: 1px solid var(--border-light);
                box-shadow: var(--shadow-md);
                gap: 4px;
            }
            .nav-desktop.open .nav-link {
                padding: 12px 16px;
                border-radius: var(--radius-sm);
            }

            .mobile-bottom-tab {
                display: block;
            }
            body {
                padding-bottom: 68px;
            }

            .category-hero {
                padding: 56px 0 48px;
                min-height: 240px;
            }
            .category-hero h1 {
                font-size: 1.8rem;
            }
            .category-hero .hero-desc {
                font-size: 1rem;
            }

            .section-block {
                padding: 48px 0;
            }
            .section-title {
                font-size: 1.5rem;
            }

            .strategy-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }
            .strategy-card-img {
                height: 180px;
            }

            .flow-steps {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .flow-arrow {
                display: none;
            }

            .tag-cloud {
                gap: 8px;
            }
            .tag-cloud .tag-item {
                padding: 6px 14px;
                font-size: 0.8rem;
            }

            .cta-block {
                padding: 36px 24px;
                border-radius: var(--radius-md);
            }
            .cta-block h2 {
                font-size: 1.4rem;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                gap: 12px;
                text-align: center;
            }
            .footer-links {
                justify-content: center;
                flex-wrap: wrap;
                gap: 12px;
            }
        }

        @media (max-width: 520px) {
            .category-hero h1 {
                font-size: 1.5rem;
            }
            .hero-badge {
                font-size: 0.75rem;
                padding: 4px 14px;
            }
            .strategy-card-body {
                padding: 18px 18px 22px;
            }
            .strategy-card h3 {
                font-size: 1rem;
            }
            .faq-question {
                padding: 14px 16px;
                font-size: 0.92rem;
            }
            .faq-answer {
                padding: 0 16px 14px;
                font-size: 0.88rem;
            }
        }

        /* ===== 可访问性 ===== */
        :focus-visible {
            outline: 3px solid var(--primary-light);
            outline-offset: 2px;
        }

        /* ===== 动画 ===== */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .animate-fade-in {
            animation: fadeInUp 0.6s ease forwards;
        }

        /* ===== 分类页特有的额外样式 ===== */
        .strategy-stats {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-bottom: 48px;
        }
        .stat-item {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: 28px 20px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .stat-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .stat-item .stat-number {
            font-size: 2rem;
            font-weight: 800;
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.2;
        }
        .stat-item .stat-label {
            font-size: 0.88rem;
            color: var(--text-muted);
            margin-top: 4px;
        }
        .stat-item i {
            font-size: 1.8rem;
            color: var(--primary-light);
            margin-bottom: 12px;
            display: block;
        }

        @media (max-width: 768px) {
            .strategy-stats {
                grid-template-columns: repeat(2, 1fr);
                gap: 14px;
            }
            .stat-item {
                padding: 20px 14px;
            }
            .stat-item .stat-number {
                font-size: 1.5rem;
            }
        }

        /* 攻略分类二级导航 */
        .sub-nav {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            justify-content: center;
            margin-bottom: 36px;
        }
        .sub-nav a {
            padding: 8px 20px;
            border-radius: 100px;
            font-size: 0.9rem;
            font-weight: 500;
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            color: var(--text-body);
            transition: var(--transition);
            text-decoration: none;
        }
        .sub-nav a:hover,
        .sub-nav a.active {
            background: var(--primary-gradient);
            color: #fff;
            border-color: transparent;
            box-shadow: 0 4px 16px rgba(108, 63, 197, 0.25);
        }