/* roulang page: index */
/* ==================== 设计变量 ==================== */
        :root {
            --primary: #0b1425;
            --primary-light: #16233b;
            --accent: #ff7a18;
            --accent-hover: #ff9240;
            --accent-secondary: #00b4d8;
            --bg: #f5f7fa;
            --bg-white: #ffffff;
            --bg-dark: #0b1425;
            --text: #1a2333;
            --text-light: #66788f;
            --border: #e4e9ef;
            --radius: 16px;
            --radius-sm: 10px;
            --radius-lg: 26px;
            --shadow: 0 8px 30px rgba(0, 0, 0, 0.07);
            --shadow-hover: 0 16px 48px rgba(0, 0, 0, 0.14);
            --shadow-accent: 0 6px 24px rgba(255, 122, 24, 0.35);
            --spacing-section: 100px;
            --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            color: var(--text);
            background-color: var(--bg);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }

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

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

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }

        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 3px solid rgba(255, 122, 24, 0.5);
            outline-offset: 2px;
        }

        /* ==================== 容器 ==================== */
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        .container-wide {
            max-width: 1400px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        .section {
            padding-top: var(--spacing-section);
            padding-bottom: var(--spacing-section);
        }

        .section-dark {
            background-color: var(--bg-dark);
            color: #e8edf5;
        }

        .section-alt {
            background-color: #eef1f6;
        }

        .section-header {
            text-align: center;
            margin-bottom: 56px;
        }

        .section-header .section-tag {
            display: inline-block;
            background: rgba(255, 122, 24, 0.12);
            color: var(--accent);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 18px;
            border-radius: 50px;
            letter-spacing: 2px;
            text-transform: uppercase;
            margin-bottom: 16px;
        }

        .section-header h2 {
            font-size: 36px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--text);
            margin-bottom: 14px;
        }

        .section-dark .section-header h2 {
            color: #fff;
        }

        .section-header p {
            font-size: 17px;
            color: var(--text-light);
            max-width: 600px;
            margin: 0 auto;
        }

        .section-dark .section-header p {
            color: rgba(255, 255, 255, 0.7);
        }

        /* ==================== 按钮 ==================== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: 50px;
            font-size: 15px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            white-space: nowrap;
        }

        .btn-primary {
            background: linear-gradient(135deg, #ff7a18, #ff9a3d);
            color: #fff;
            box-shadow: var(--shadow-accent);
        }

        .btn-primary:hover {
            background: linear-gradient(135deg, #ff9240, #ffb366);
            transform: translateY(-2px);
            box-shadow: 0 10px 32px rgba(255, 122, 24, 0.45);
        }

        .btn-outline {
            background: transparent;
            border: 2px solid rgba(255, 255, 255, 0.6);
            color: #fff;
        }

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

        .btn-dark-outline {
            background: transparent;
            border: 2px solid var(--primary);
            color: var(--primary);
        }

        .btn-dark-outline:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }

        .btn-light {
            background: #fff;
            color: var(--primary);
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1);
        }

        .btn-light:hover {
            background: #f1f3f7;
            transform: translateY(-2px);
            box-shadow: 0 12px 32px rgba(0, 0, 0, 0.15);
        }

        .btn-lg {
            padding: 18px 44px;
            font-size: 17px;
        }

        .btn-sm {
            padding: 9px 22px;
            font-size: 14px;
        }

        .btn .fa {
            font-size: 16px;
            transition: transform 0.3s;
        }

        .btn:hover .fa-arrow-right {
            transform: translateX(4px);
        }

        .btn:hover .fa-play {
            transform: scale(1.1);
        }

        /* ==================== 导航 ==================== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.04);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 76px;
            gap: 24px;
        }

        .logo {
            font-size: 24px;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: 1px;
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .logo .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--accent), #ffb066);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
            box-shadow: 0 4px 12px rgba(255, 122, 24, 0.4);
        }

        /* 分段标签导航 */
        .main-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            background: #f0f2f5;
            padding: 4px;
            border-radius: 50px;
            margin: 0 16px;
            flex: 0 1 auto;
        }

        .main-nav a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 22px;
            border-radius: 50px;
            font-size: 14px;
            font-weight: 600;
            color: var(--text-light);
            transition: var(--transition);
        }

        .main-nav a:hover {
            color: var(--primary);
            background: rgba(255, 255, 255, 0.7);
        }

        .main-nav a.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(11, 20, 37, 0.3);
        }

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

        .header-actions {
            display: flex;
            align-items: center;
            gap: 14px;
            flex-shrink: 0;
        }

        .hamburger-btn {
            display: none;
            background: none;
            border: none;
            font-size: 24px;
            color: var(--primary);
            cursor: pointer;
            width: 42px;
            height: 42px;
            border-radius: 10px;
            align-items: center;
            justify-content: center;
            transition: var(--transition);
        }

        .hamburger-btn:hover {
            background: #f0f2f5;
        }

        /* ==================== Hero ==================== */
        .hero {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            padding: 140px 0 100px;
            overflow: hidden;
            background-color: var(--bg-dark);
        }

        .hero-bg {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            z-index: 0;
        }

        .hero-bg img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            opacity: 0.65;
        }

        .hero-bg::after {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(135deg, rgba(11, 20, 37, 0.92) 0%, rgba(11, 20, 37, 0.75) 50%, rgba(11, 20, 37, 0.45) 100%);
        }

        .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            color: #fff;
            max-width: 850px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .hero-tag {
            display: inline-block;
            background: rgba(255, 122, 24, 0.2);
            border: 1px solid rgba(255, 122, 24, 0.4);
            color: #ffb066;
            font-size: 14px;
            font-weight: 600;
            padding: 8px 24px;
            border-radius: 50px;
            letter-spacing: 2px;
            margin-bottom: 24px;
            backdrop-filter: blur(4px);
        }

        .hero-content h1 {
            font-size: clamp(40px, 7vw, 68px);
            font-weight: 800;
            line-height: 1.15;
            margin-bottom: 20px;
            letter-spacing: 2px;
            text-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
        }

        .hero-content h1 span {
            color: var(--accent);
        }

        .hero-desc {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.85);
            line-height: 1.8;
            max-width: 640px;
            margin: 0 auto 36px;
        }

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

        .hero-info-bar {
            position: relative;
            z-index: 2;
            margin-top: 70px;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 20px;
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            padding: 30px 40px;
            display: flex;
            justify-content: center;
            gap: 60px;
            max-width: 900px;
            margin-left: auto;
            margin-right: auto;
        }

        .hero-info-item {
            text-align: center;
        }

        .hero-info-item .num {
            font-size: 32px;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.2;
        }

        .hero-info-item .label {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 4px;
        }

        /* ==================== 核心特性 ==================== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
            margin-top: 20px;
        }

        .feature-card {
            background: var(--bg-white);
            border-radius: var(--radius);
            padding: 40px 32px;
            text-align: center;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .feature-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background: linear-gradient(90deg, var(--accent), #ffb066);
            transform: scaleX(0);
            transform-origin: left;
            transition: transform 0.4s ease;
        }

        .feature-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-hover);
        }

        .feature-card:hover::before {
            transform: scaleX(1);
        }

        .feature-icon {
            width: 72px;
            height: 72px;
            border-radius: 20px;
            background: linear-gradient(135deg, rgba(255, 122, 24, 0.12), rgba(0, 180, 216, 0.12));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 30px;
            color: var(--accent);
            margin: 0 auto 24px;
            transition: var(--transition);
        }

        .feature-card:hover .feature-icon {
            transform: scale(1.08) rotate(-4deg);
            background: linear-gradient(135deg, rgba(255, 122, 24, 0.18), rgba(0, 180, 216, 0.18));
        }

        .feature-card h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--primary);
        }

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

        /* ==================== 分类入口 ==================== */
        .category-section {
            background: linear-gradient(180deg, #eef1f6 0%, #f5f7fa 100%);
        }

        .category-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 30px;
        }

        .category-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
            height: 100%;
        }

        .category-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-hover);
        }

        .category-card-img {
            position: relative;
            height: 220px;
            overflow: hidden;
        }

        .category-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .category-card:hover .category-card-img img {
            transform: scale(1.06);
        }

        .category-card-img::after {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(180deg, transparent 40%, rgba(11, 20, 37, 0.4));
        }

        .category-card-body {
            padding: 28px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .category-card-body h3 {
            font-size: 22px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 10px;
        }

        .category-card-body p {
            font-size: 14px;
            color: var(--text-light);
            flex: 1;
            line-height: 1.7;
        }

        .category-card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--accent);
            font-weight: 600;
            font-size: 15px;
            margin-top: 18px;
            transition: var(--transition);
        }

        .category-card-link:hover {
            gap: 12px;
        }

        .category-badge {
            position: absolute;
            top: 16px;
            left: 16px;
            background: rgba(255, 122, 24, 0.9);
            color: #fff;
            font-size: 13px;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: 50px;
            z-index: 2;
            backdrop-filter: blur(4px);
        }

        /* ==================== 最新资讯 ==================== */
        .latest-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

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

        .post-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(255, 122, 24, 0.3);
        }

        .post-cat {
            display: inline-block;
            font-size: 12px;
            font-weight: 700;
            color: var(--accent);
            background: rgba(255, 122, 24, 0.1);
            padding: 4px 14px;
            border-radius: 50px;
            align-self: flex-start;
            margin-bottom: 14px;
            letter-spacing: 1px;
        }

        .post-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.5;
            margin-bottom: 10px;
            transition: var(--transition);
        }

        .post-card h3 a:hover {
            color: var(--accent);
        }

        .post-card p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.7;
            flex: 1;
            margin-bottom: 18px;
        }

        .post-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 13px;
            color: #8a9aa9;
            border-top: 1px solid #f0f2f5;
            padding-top: 14px;
            margin-top: auto;
        }

        .empty-tip {
            text-align: center;
            padding: 48px;
            background: var(--bg-white);
            border-radius: var(--radius);
            border: 1px dashed var(--border);
            color: var(--text-light);
            font-size: 16px;
            grid-column: 1 / -1;
        }

        /* ==================== 数据统计 ==================== */
        .stats-section {
            background: var(--bg-dark);
            position: relative;
            overflow: hidden;
        }

        .stats-bg {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            opacity: 0.15;
            z-index: 0;
        }

        .stats-bg img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .stats-bg::after {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(11, 20, 37, 0.6);
        }

        .stats-grid {
            position: relative;
            z-index: 1;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
        }

        .stat-item {
            text-align: center;
            padding: 40px 20px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 20px;
            transition: var(--transition);
        }

        .stat-item:hover {
            background: rgba(255, 255, 255, 0.08);
            transform: translateY(-4px);
        }

        .stat-item .stat-icon {
            font-size: 36px;
            color: var(--accent);
            margin-bottom: 16px;
        }

        .stat-item .stat-num {
            font-size: 44px;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
        }

        .stat-item .stat-num sup {
            font-size: 22px;
            color: var(--accent);
        }

        .stat-item .stat-label {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 10px;
        }

        /* ==================== 流程步骤 ==================== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            position: relative;
        }

        .steps-grid::before {
            content: "";
            position: absolute;
            top: 50px;
            left: 10%;
            width: 80%;
            height: 2px;
            background: linear-gradient(90deg, var(--accent), #ffb066);
            opacity: 0.5;
            z-index: 0;
        }

        .step-item {
            text-align: center;
            padding: 30px 20px;
            position: relative;
            z-index: 1;
        }

        .step-num {
            width: 100px;
            height: 100px;
            border-radius: 30px;
            background: var(--bg-white);
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            font-size: 34px;
            font-weight: 800;
            color: var(--accent);
            transition: var(--transition);
            position: relative;
            background: linear-gradient(135deg, #fff, #f8f9fb);
        }

        .step-item:hover .step-num {
            transform: scale(1.06) rotate(-3deg);
            box-shadow: var(--shadow-hover);
            color: var(--primary);
        }

        .step-item h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 10px;
        }

        .step-item p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.6;
        }

        /* ==================== 图文展示 ==================== */
        .showcase-section {
            background: var(--bg-white);
        }

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

        .showcase-grid:last-child {
            margin-bottom: 0;
        }

        .showcase-grid.reverse .showcase-img {
            order: 2;
        }

        .showcase-grid.reverse .showcase-text {
            order: 1;
        }

        .showcase-img {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-hover);
            position: relative;
        }

        .showcase-img img {
            width: 100%;
            height: 380px;
            object-fit: cover;
            transition: transform 0.6s ease;
        }

        .showcase-img:hover img {
            transform: scale(1.03);
        }

        .showcase-img .img-badge {
            position: absolute;
            bottom: 16px;
            left: 16px;
            background: rgba(11, 20, 37, 0.75);
            backdrop-filter: blur(8px);
            color: #fff;
            font-size: 13px;
            padding: 8px 18px;
            border-radius: 50px;
            font-weight: 500;
        }

        .showcase-text .feature-list {
            list-style: none;
            margin-top: 20px;
        }

        .showcase-text .feature-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            font-size: 15px;
            color: var(--text-light);
            margin-bottom: 12px;
            line-height: 1.6;
        }

        .showcase-text .feature-list li .fa-check-circle {
            color: var(--accent);
            font-size: 18px;
            margin-top: 2px;
            flex-shrink: 0;
        }

        .showcase-text h3 {
            font-size: 28px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 16px;
            line-height: 1.4;
        }

        .showcase-text>p {
            font-size: 15px;
            color: var(--text-light);
            line-height: 1.8;
        }

        /* ==================== FAQ ==================== */
        .faq-wrap {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--bg-white);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            margin-bottom: 16px;
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-item:hover {
            border-color: rgba(255, 122, 24, 0.3);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 22px 28px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--primary);
            transition: var(--transition);
        }

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

        .faq-question .fa-chevron-down {
            color: var(--accent);
            transition: transform 0.3s;
        }

        .faq-item.active .fa-chevron-down {
            transform: rotate(180deg);
        }

        .faq-answer {
            padding: 0 28px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
            color: var(--text-light);
            font-size: 15px;
            line-height: 1.7;
        }

        .faq-item.active .faq-answer {
            max-height: 300px;
            padding-bottom: 22px;
        }

        /* ==================== CTA ==================== */
        .cta-section {
            position: relative;
            padding: 90px 0;
            background: linear-gradient(135deg, #0b1425 0%, #1a2b45 100%);
            overflow: hidden;
        }

        .cta-pattern {
            position: absolute;
            top: -40%;
            right: -10%;
            width: 500px;
            height: 500px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(255, 122, 24, 0.15) 0%, transparent 70%);
        }

        .cta-content {
            position: relative;
            z-index: 2;
            text-align: center;
            color: #fff;
        }

        .cta-content h2 {
            font-size: 40px;
            font-weight: 800;
            margin-bottom: 16px;
            letter-spacing: 1px;
        }

        .cta-content p {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.8);
            max-width: 600px;
            margin: 0 auto 36px;
        }

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

        /* ==================== 页脚 ==================== */
        .site-footer {
            background: #060d18;
            color: rgba(255, 255, 255, 0.6);
            padding: 70px 0 30px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 50px;
            margin-bottom: 50px;
        }

        .footer-brand .logo {
            color: #fff;
            font-size: 22px;
            margin-bottom: 14px;
        }

        .footer-brand .logo .logo-icon {
            width: 34px;
            height: 34px;
            font-size: 16px;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.5);
            max-width: 300px;
        }

        .footer-col h4 {
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 18px;
            position: relative;
            padding-bottom: 10px;
        }

        .footer-col h4::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 0;
            width: 30px;
            height: 2px;
            background: var(--accent);
        }

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

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

        .footer-col ul li a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.5);
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 24px;
            text-align: center;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
        }

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

        /* ==================== 移动端菜单 ==================== */
        .mobile-menu {
            display: none;
            position: fixed;
            top: 76px;
            left: 0;
            width: 100%;
            background: #fff;
            padding: 20px 24px;
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
            border-bottom: 1px solid var(--border);
            z-index: 99;
        }

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

        .mobile-menu a {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 14px 16px;
            border-radius: 12px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
        }

        .mobile-menu a:hover {
            background: #f5f7fa;
        }

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

        .mobile-menu .btn {
            margin-top: 16px;
            width: 100%;
        }

        /* ==================== 响应式 ==================== */
        @media (max-width: 1024px) {
            :root {
                --spacing-section: 80px;
            }

            .hero-info-bar {
                gap: 40px;
                padding: 24px 30px;
            }

            .showcase-grid {
                gap: 40px;
            }

            .showcase-img img {
                height: 320px;
            }

            .footer-grid {
                gap: 30px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --spacing-section: 60px;
            }

            .header-actions .btn-sm {
                display: none;
            }

            .main-nav {
                display: none;
            }

            .hamburger-btn {
                display: flex;
            }

            .hero {
                min-height: auto;
                padding: 120px 0 80px;
            }

            .hero-content h1 {
                font-size: 36px;
            }

            .hero-desc {
                font-size: 16px;
                margin-bottom: 28px;
            }

            .hero-info-bar {
                flex-direction: column;
                gap: 24px;
                margin-top: 50px;
                padding: 24px 20px;
            }

            .hero-btns {
                flex-direction: column;
                align-items: center;
            }

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

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

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

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }

            .stat-item .stat-num {
                font-size: 32px;
            }

            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }

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

            .showcase-grid,
            .showcase-grid.reverse {
                grid-template-columns: 1fr;
            }

            .showcase-grid.reverse .showcase-img {
                order: 0;
            }

            .showcase-grid.reverse .showcase-text {
                order: 0;
            }

            .showcase-img img {
                height: 250px;
            }

            .section-header h2 {
                font-size: 28px;
            }

            .cta-content h2 {
                font-size: 30px;
            }

            .cta-btns {
                flex-direction: column;
                align-items: center;
            }

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

            .footer-brand {
                text-align: center;
            }

            .footer-brand .logo {
                justify-content: center;
            }

            .footer-brand p {
                margin: 0 auto;
            }

            .footer-col {
                text-align: center;
            }

            .footer-col h4::after {
                left: 50%;
                transform: translateX(-50%);
            }

            .footer-col ul li a:hover {
                transform: translateX(0);
            }
        }

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

            .hero-content h1 {
                font-size: 30px;
                letter-spacing: 1px;
            }

            .hero-desc {
                font-size: 15px;
            }

            .btn {
                padding: 12px 24px;
                font-size: 14px;
            }

            .btn-lg {
                padding: 15px 32px;
                font-size: 15px;
            }

            .logo {
                font-size: 19px;
            }

            .logo .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 15px;
            }

            .section-header h2 {
                font-size: 24px;
            }

            .section-header p {
                font-size: 15px;
            }

            .features-grid {
                gap: 18px;
            }

            .feature-card {
                padding: 28px 22px;
            }

            .category-card-img {
                height: 180px;
            }

            .post-card {
                padding: 22px 18px;
            }

            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }

            .stat-item {
                padding: 24px 12px;
            }

            .stat-item .stat-num {
                font-size: 26px;
            }

            .stat-item .stat-icon {
                font-size: 26px;
                margin-bottom: 10px;
            }

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

            .step-item {
                padding: 20px 12px;
            }

            .faq-question {
                padding: 18px 20px;
                font-size: 15px;
            }

            .faq-answer {
                font-size: 14px;
            }

            .cta-content h2 {
                font-size: 26px;
            }

            .cta-content p {
                font-size: 15px;
            }
        }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
:root {
  --primary: #6c5ce7;
  --primary-600: #5746d8;
  --primary-100: #eeeaff;
  --secondary: #ff9f43;
  --secondary-600: #f5802a;
  --ink: #1e1b36;
  --ink-muted: #716d92;
  --bg-body: #f7f7fd;
  --bg-white: #ffffff;
  --bg-dark: #13102d;
  --bg-dark-soft: #1d1940;
  --border: #eae8f6;
  --radius-sm: 8px;
  --radius: 14px;
  --radius-lg: 22px;
  --radius-full: 999px;
  --shadow-xs: 0 2px 6px rgba(30, 27, 54, .04);
  --shadow-sm: 0 4px 16px rgba(30, 27, 54, .06);
  --shadow-md: 0 12px 32px rgba(108, 92, 231, .10);
  --shadow-lg: 0 20px 55px rgba(108, 92, 231, .14);
  --spacer: 96px;
  --header-h: 76px;
  --transition: .35s cubic-bezier(.4, 0, .2, 1);
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.75;
  color: var(--ink);
  background: var(--bg-body);
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
  border: none;
}

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

ul, ol {
  list-style: none;
}

button, input {
  font: inherit;
  border: none;
  background: none;
}

button {
  cursor: pointer;
}

:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ===== 容器 ===== */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 28px;
}

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 13px 30px;
  border-radius: var(--radius-full);
  font-size: 15px;
  font-weight: 600;
  line-height: 1.4;
  letter-spacing: .2px;
  transition: all var(--transition);
  border: 2px solid transparent;
  white-space: nowrap;
}

.btn i {
  font-size: 14px;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), #8d7bf5);
  color: #fff;
  box-shadow: 0 8px 24px rgba(108, 92, 231, .35);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 14px 32px rgba(108, 92, 231, .42);
  color: #fff;
}

.btn-primary:active {
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(108, 92, 231, .30);
}

.btn-ghost {
  background: transparent;
  border-color: rgba(255, 255, 255, .4);
  color: #fff;
  backdrop-filter: blur(4px);
}

.btn-ghost:hover {
  border-color: #fff;
  background: rgba(255, 255, 255, .1);
  color: #fff;
  transform: translateY(-3px);
}

.btn-ghost-light {
  background: var(--bg-white);
  color: var(--primary);
  border-color: transparent;
  box-shadow: 0 8px 24px rgba(30, 27, 54, .12);
}

.btn-ghost-light:hover {
  transform: translateY(-3px);
  box-shadow: 0 14px 32px rgba(30, 27, 54, .16);
  color: var(--primary-600);
}

.btn-lg {
  padding: 16px 40px;
  font-size: 17px;
}

/* ===== 顶部导航 ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(15, 12, 36, .92);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(255, 255, 255, .08);
  height: var(--header-h);
  transition: box-shadow var(--transition);
}

.site-header.is-scrolled {
  box-shadow: 0 10px 40px rgba(5, 3, 20, .45);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
  height: var(--header-h);
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  font-size: 21px;
  font-weight: 800;
  color: #fff;
}

.logo-icon {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), #ff9f43);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 18px;
  box-shadow: 0 6px 16px rgba(108, 92, 231, .4);
}

.logo:hover {
  color: #fff;
}

.logo:hover .logo-icon {
  transform: rotate(-8deg) scale(1.05);
}

.logo .logo-icon {
  transition: transform var(--transition);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 8px;
}

.main-nav a {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 10px 22px;
  border-radius: var(--radius-full);
  font-size: 14px;
  font-weight: 500;
  color: rgba(255, 255, 255, .72);
  transition: all var(--transition);
}

.main-nav a i {
  font-size: 13px;
  opacity: .9;
}

.main-nav a:hover {
  color: #fff;
  background: rgba(255, 255, 255, .08);
}

.main-nav a.active {
  color: #fff;
  background: linear-gradient(135deg, var(--primary), #7d6bf0);
  box-shadow: 0 6px 18px rgba(108, 92, 231, .4);
}

.header-cta {
  padding: 10px 22px;
  font-size: 14px;
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: rgba(255, 255, 255, .08);
  color: #fff;
  font-size: 18px;
  align-items: center;
  justify-content: center;
  transition: background var(--transition);
}

.nav-toggle:hover {
  background: rgba(255, 255, 255, .16);
}

.nav-toggle.active i::before {
  content: "\f00d";
}

/* ===== 分类页首屏 Hero ===== */
.cat-hero {
  position: relative;
  min-height: 520px;
  display: flex;
  align-items: center;
  padding-top: var(--header-h);
  overflow: hidden;
}

.cat-hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  transform: scale(1.05);
  animation: heroZoom 18s ease-out forwards;
}

@keyframes heroZoom {
  to { transform: scale(1); }
}

.cat-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(115deg, rgba(13, 9, 34, .93) 0%, rgba(13, 9, 34, .74) 45%, rgba(13, 9, 34, .45) 100%);
  z-index: 1;
}

.cat-hero::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 140px;
  background: linear-gradient(to top, var(--bg-body), transparent);
  z-index: 2;
}

.cat-hero-content {
  position: relative;
  z-index: 3;
  padding: 70px 28px 90px;
  color: #fff;
  max-width: 780px;
  margin: 0;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, .12);
  border: 1px solid rgba(255, 255, 255, .18);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .4px;
  color: rgba(255, 255, 255, .9);
  margin-bottom: 24px;
  backdrop-filter: blur(8px);
}

.hero-badge i {
  color: var(--secondary);
}

.cat-hero-content h1 {
  font-size: 52px;
  line-height: 1.2;
  font-weight: 900;
  letter-spacing: 1px;
  margin-bottom: 18px;
  text-shadow: 0 4px 30px rgba(0, 0, 0, .25);
}

.cat-hero-content h1 span {
  background: linear-gradient(135deg, var(--secondary), #ffbe76);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.cat-hero-content p {
  font-size: 18px;
  line-height: 1.85;
  color: rgba(255, 255, 255, .85);
  margin-bottom: 36px;
  max-width: 560px;
}

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

/* ===== 数据条 ===== */
.stats-strip {
  background: linear-gradient(120deg, var(--primary), #8d7bf5, #ff9f43);
  padding: 46px 0;
  position: relative;
  z-index: 4;
  margin-top: -2px;
  box-shadow: 0 18px 45px rgba(108, 92, 231, .22);
}

.stat-item {
  text-align: center;
  padding: 10px 20px;
  color: #fff;
}

.stat-item + .stat-item {
  border-left: 1px solid rgba(255, 255, 255, .18);
}

.stat-num {
  font-size: 38px;
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: 1px;
}

.stat-label {
  margin-top: 6px;
  font-size: 14px;
  color: rgba(255, 255, 255, .85);
  letter-spacing: .4px;
}

/* ===== 通用板块 ===== */
.section {
  padding: var(--spacer) 0;
}

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

.section-head {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 58px;
}

.section-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--primary);
  background: var(--primary-100);
  padding: 7px 18px;
  border-radius: var(--radius-full);
  margin-bottom: 16px;
}

.section-eyebrow::before,
.section-eyebrow::after {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--secondary);
}

.section-title {
  font-size: 38px;
  line-height: 1.25;
  font-weight: 800;
  margin-bottom: 14px;
  letter-spacing: .4px;
}

.section-title em {
  font-style: normal;
  color: var(--primary);
}

.section-desc {
  font-size: 16px;
  line-height: 1.8;
  color: var(--ink-muted);
}

/* ===== 平台概览 ===== */
.intro-section {
  background: var(--bg-white);
  padding: var(--spacer) 0;
}

.intro-media {
  position: relative;
}

.intro-media::before {
  content: "";
  position: absolute;
  top: -18px;
  left: -18px;
  width: 180px;
  height: 180px;
  border-radius: 40px;
  background: linear-gradient(135deg, var(--primary-100), rgba(255, 159, 67, .2));
  z-index: 0;
}

.intro-img-wrap {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  aspect-ratio: 4 / 3;
}

.intro-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .8s ease;
}

.intro-img-wrap:hover img {
  transform: scale(1.04);
}

.intro-img-tag {
  position: absolute;
  left: 18px;
  top: 18px;
  padding: 8px 16px;
  border-radius: var(--radius-full);
  background: rgba(19, 16, 45, .72);
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  backdrop-filter: blur(8px);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.intro-img-tag i {
  color: var(--secondary);
}

.intro-content {
  padding-left: 22px;
}

.intro-content .section-eyebrow {
  margin-bottom: 14px;
}

.intro-content h2 {
  font-size: 34px;
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 18px;
}

.intro-content h2 em {
  font-style: normal;
  color: var(--primary);
}

.intro-content .intro-lead {
  font-size: 16px;
  color: var(--ink-muted);
  line-height: 1.9;
  margin-bottom: 22px;
}

.check-list {
  margin-top: 8px;
}

.check-list li {
  position: relative;
  padding: 9px 0 9px 36px;
  font-size: 15px;
  color: var(--ink);
}

.check-list li i {
  position: absolute;
  left: 0;
  top: 12px;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), #8d7bf5);
  color: #fff;
  font-size: 11px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(108, 92, 231, .3);
}

.check-list li strong {
  font-weight: 700;
}

/* ===== 核心功能卡片 ===== */
.features-section {
  background: var(--bg-body);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 26px;
}

.feature-card {
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  padding: 36px 28px 30px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-xs);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}

.feature-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-md);
  border-color: transparent;
}

.feature-card:hover::before {
  transform: scaleX(1);
}

.feature-icon {
  width: 62px;
  height: 62px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin-bottom: 22px;
  color: #fff;
  background: linear-gradient(135deg, var(--primary), #8d7bf5);
  box-shadow: 0 8px 20px rgba(108, 92, 231, .25);
}

.feature-card:nth-child(2) .feature-icon {
  background: linear-gradient(135deg, var(--secondary), #ffbe76);
  box-shadow: 0 8px 20px rgba(255, 159, 67, .25);
}

.feature-card:nth-child(3) .feature-icon {
  background: linear-gradient(135deg, #00b894, #55efc4);
  box-shadow: 0 8px 20px rgba(0, 184, 148, .25);
}

.feature-card:nth-child(4) .feature-icon {
  background: linear-gradient(135deg, #e17055, #fab1a0);
  box-shadow: 0 8px 20px rgba(225, 112, 85, .25);
}

.feature-card h3 {
  font-size: 19px;
  font-weight: 700;
  margin-bottom: 10px;
}

.feature-card p {
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-muted);
}

/* ===== 新手上路 ===== */
.steps-section {
  background: var(--bg-white);
  position: relative;
  overflow: hidden;
}

.steps-section::before {
  content: "";
  position: absolute;
  top: 0;
  right: -120px;
  width: 420px;
  height: 420px;
  background: radial-gradient(circle, rgba(108, 92, 231, .06), transparent 70%);
  pointer-events: none;
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
  position: relative;
  z-index: 1;
}

.step-item {
  position: relative;
  text-align: center;
  padding: 0 12px;
}

.step-item:not(:last-child)::after {
  content: "\f054";
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  position: absolute;
  top: 44px;
  right: -22px;
  color: var(--border);
  font-size: 14px;
  z-index: 2;
}

.step-num {
  width: 84px;
  height: 84px;
  margin: 0 auto 22px;
  border-radius: 26px;
  background: linear-gradient(135deg, var(--primary), #8d7bf5);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 30px;
  font-weight: 900;
  color: #fff;
  box-shadow: 0 14px 30px rgba(108, 92, 231, .3);
  position: relative;
  transition: transform var(--transition);
}

.step-item:hover .step-num {
  transform: rotate(-6deg) scale(1.06);
}

.step-num::after {
  content: "";
  position: absolute;
  inset: -7px;
  border-radius: 31px;
  border: 2px dashed rgba(108, 92, 231, .3);
}

.step-item h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
}

.step-item p {
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-muted);
}

/* ===== 热门内容 ===== */
.content-section {
  background: var(--bg-dark);
  position: relative;
  overflow: hidden;
}

.content-section::before {
  content: "";
  position: absolute;
  top: -180px;
  left: 50%;
  transform: translateX(-50%);
  width: 700px;
  height: 500px;
  background: radial-gradient(ellipse, rgba(108, 92, 231, .2), transparent 70%);
  pointer-events: none;
}

.content-section .section-head {
  position: relative;
  z-index: 1;
}

.content-section .section-title {
  color: #fff;
}

.content-section .section-title em {
  background: linear-gradient(135deg, var(--secondary), #ffbe76);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.content-section .section-desc {
  color: rgba(255, 255, 255, .65);
}

.content-section .section-eyebrow {
  background: rgba(255, 255, 255, .12);
  color: #fff;
}

.content-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  position: relative;
  z-index: 1;
}

.content-card {
  background: rgba(255, 255, 255, .05);
  border: 1px solid rgba(255, 255, 255, .08);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
}

.content-card:hover {
  transform: translateY(-8px);
  background: rgba(255, 255, 255, .09);
  border-color: rgba(108, 92, 231, .4);
  box-shadow: 0 20px 50px rgba(0, 0, 0, .35);
}

.content-card-img {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
}

.content-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .6s ease;
}

.content-card:hover .content-card-img img {
  transform: scale(1.06);
}

.content-card-img::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(19, 16, 45, .55), transparent 60%);
}

.content-tag {
  position: absolute;
  left: 16px;
  bottom: 14px;
  z-index: 2;
  padding: 6px 14px;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, var(--primary), #8d7bf5);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .4px;
  backdrop-filter: blur(6px);
}

.content-body {
  padding: 24px 26px 26px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.content-body h3 {
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  line-height: 1.5;
  margin-bottom: 10px;
}

.content-body h3 a {
  transition: color var(--transition);
}

.content-body h3 a:hover {
  color: var(--secondary);
}

.content-body p {
  font-size: 14px;
  color: rgba(255, 255, 255, .58);
  line-height: 1.75;
  margin-bottom: 18px;
  flex: 1;
}

.content-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  color: rgba(255, 255, 255, .45);
  border-top: 1px solid rgba(255, 255, 255, .1);
  padding-top: 14px;
}

.content-meta span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.content-meta i {
  font-size: 12px;
  color: var(--secondary);
}

/* ===== FAQ ===== */
.faq-section {
  background: var(--bg-body);
}

.faq-wrap {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-xs);
  transition: all var(--transition);
}

.faq-item:hover {
  border-color: rgba(108, 92, 231, .3);
  box-shadow: var(--shadow-sm);
}

.faq-item.active {
  border-color: rgba(108, 92, 231, .4);
  box-shadow: var(--shadow-md);
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 22px 28px;
  font-size: 16px;
  font-weight: 600;
  text-align: left;
  color: var(--ink);
  transition: color var(--transition);
}

.faq-question .faq-q-icon {
  width: 32px;
  height: 32px;
  border-radius: 10px;
  background: var(--primary-100);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 800;
  flex-shrink: 0;
}

.faq-question .faq-toggle {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--bg-body);
  color: var(--ink-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  flex-shrink: 0;
  transition: all var(--transition);
}

.faq-item.active .faq-toggle {
  background: var(--primary);
  color: #fff;
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height .45s ease;
}

.faq-answer-inner {
  padding: 0 28px 24px 60px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink-muted);
}

.faq-answer-inner strong {
  color: var(--ink);
  font-weight: 600;
}

/* ===== CTA ===== */
.cta-section {
  position: relative;
  padding: 100px 0;
  background: linear-gradient(135deg, #13102d 0%, #221a4a 60%, #352a66 100%);
  overflow: hidden;
}

.cta-section::before {
  content: "";
  position: absolute;
  top: 20%;
  left: 10%;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(108, 92, 231, .3), transparent 65%);
  animation: float 8s ease-in-out infinite alternate;
}

.cta-section::after {
  content: "";
  position: absolute;
  bottom: 10%;
  right: 8%;
  width: 260px;
  height: 260px;
  background: radial-gradient(circle, rgba(255, 159, 67, .2), transparent 65%);
  animation: float 10s ease-in-out infinite alternate-reverse;
}

@keyframes float {
  0% { transform: translateY(0) scale(1); }
  100% { transform: translateY(-24px) scale(1.06); }
}

.cta-inner {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 720px;
  margin: 0 auto;
}

.cta-inner h2 {
  font-size: 40px;
  font-weight: 900;
  color: #fff;
  line-height: 1.3;
  margin-bottom: 16px;
}

.cta-inner h2 span {
  background: linear-gradient(135deg, var(--secondary), #ffbe76);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.cta-inner p {
  font-size: 16px;
  color: rgba(255, 255, 255, .7);
  margin-bottom: 34px;
  line-height: 1.85;
}

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

/* ===== 页脚 ===== */
.site-footer {
  background: #0d0a1f;
  color: rgba(255, 255, 255, .7);
  padding: 70px 0 0;
  border-top: 1px solid rgba(255, 255, 255, .06);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 52px;
  border-bottom: 1px solid rgba(255, 255, 255, .08);
}

.footer-brand .logo {
  font-size: 20px;
  margin-bottom: 16px;
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.85;
  color: rgba(255, 255, 255, .55);
  max-width: 380px;
}

.footer-col h4 {
  font-size: 16px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 22px;
  position: relative;
  padding-bottom: 10px;
}

.footer-col h4::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 32px;
  height: 3px;
  border-radius: 4px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-col a {
  font-size: 14px;
  color: rgba(255, 255, 255, .6);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: all var(--transition);
}

.footer-col a i {
  font-size: 11px;
  color: var(--primary);
  transition: transform var(--transition);
}

.footer-col a:hover {
  color: #fff;
  padding-left: 3px;
}

.footer-col a:hover i {
  transform: translateX(3px);
  color: var(--secondary);
}

.footer-bottom {
  padding: 24px 0;
  text-align: center;
  font-size: 13px;
  color: rgba(255, 255, 255, .4);
}

.footer-bottom .domain {
  color: rgba(255, 255, 255, .65);
  font-weight: 600;
}

/* ===== 响应式 ===== */
@media screen and (max-width: 1024px) {
  :root {
    --spacer: 76px;
  }

  .features-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 22px;
  }

  .steps-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 40px 24px;
  }

  .step-item:nth-child(2)::after {
    display: none;
  }

  .step-item:not(:last-child)::after {
    display: none;
  }

  .content-cards {
    gap: 20px;
  }

  .cat-hero-content h1 {
    font-size: 42px;
  }
}

@media screen and (max-width: 768px) {
  :root {
    --spacer: 62px;
  }

  .container {
    padding: 0 20px;
  }

  /* 移动端导航 */
  .nav-toggle {
    display: flex;
  }

  .header-cta {
    display: none;
  }

  .main-nav {
    position: absolute;
    top: var(--header-h);
    left: 0;
    width: 100%;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    background: rgba(15, 12, 36, .97);
    backdrop-filter: blur(20px);
    padding: 14px 20px 20px;
    border-bottom: 1px solid rgba(255, 255, 255, .08);
    box-shadow: 0 30px 40px rgba(0, 0, 0, .4);
    transform: translateY(-16px);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition);
  }

  .main-nav.open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .main-nav a {
    padding: 14px 18px;
    font-size: 15px;
    border-radius: 12px;
  }

  .main-nav a.active {
    box-shadow: none;
  }

  .cat-hero {
    min-height: 460px;
  }

  .cat-hero-content {
    padding: 50px 20px 70px;
  }

  .cat-hero-content h1 {
    font-size: 34px;
  }

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

  .stat-num {
    font-size: 28px;
  }

  .section-title {
    font-size: 29px;
  }

  .section-head {
    margin-bottom: 40px;
  }

  .intro-content {
    padding-left: 0;
    margin-top: 36px;
  }

  .intro-content h2 {
    font-size: 28px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 34px;
  }

  .footer-brand p {
    max-width: none;
  }

  .cta-inner h2 {
    font-size: 30px;
  }

  .stats-strip .grid-x {
    gap: 20px 0;
  }

  .stat-item + .stat-item {
    border-left: none;
  }
}

@media screen and (max-width: 520px) {
  :root {
    --spacer: 52px;
  }

  .container {
    padding: 0 16px;
  }

  .header-inner {
    gap: 12px;
  }

  .logo {
    font-size: 17px;
  }

  .logo-icon {
    width: 36px;
    height: 36px;
    font-size: 15px;
  }

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

  .cat-hero-content p {
    font-size: 15px;
  }

  .hero-actions {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

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

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

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

  .content-cards {
    grid-template-columns: 1fr;
  }

  .section-title {
    font-size: 25px;
  }

  .cta-inner h2 {
    font-size: 25px;
  }

  .cta-actions {
    flex-direction: column;
    align-items: center;
  }

  .cta-actions .btn {
    width: 100%;
  }

  .faq-question {
    padding: 18px 20px;
    font-size: 15px;
  }

  .faq-answer-inner {
    padding: 0 20px 20px 48px;
  }
}

/* roulang page: article */
:root {
    --primary: #6c5ce7;
    --primary-dark: #5a4bd1;
    --primary-light: #a29bfe;
    --primary-100: #eef0fe;
    --accent: #f7b731;
    --accent-dark: #e5a620;
    --accent-100: #fff8e6;
    --dark: #0b0b1a;
    --dark-2: #111128;
    --dark-3: #181838;
    --light: #f6f7fe;
    --white: #ffffff;
    --text: #23233a;
    --text-strong: #15152a;
    --muted: #686880;
    --border: #e7e8f4;
    --shadow-sm: 0 2px 10px rgba(20, 20, 50, 0.06);
    --shadow-md: 0 8px 30px rgba(20, 20, 50, 0.1);
    --shadow-lg: 0 20px 60px rgba(20, 20, 50, 0.18);
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 24px;
    --radius-xl: 36px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --font-base: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-base);
    color: var(--text);
    background: var(--white);
    line-height: 1.7;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

button,
input,
select,
textarea {
    font-family: inherit;
}

.row {
    max-width: 1200px;
}

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

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: 50px;
    font-size: 15px;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: all var(--transition);
    white-space: nowrap;
    letter-spacing: 0.02em;
}

.btn-sm {
    padding: 8px 18px;
    font-size: 13px;
}

.btn-lg {
    padding: 15px 36px;
    font-size: 16px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: #fff;
    box-shadow: 0 4px 18px rgba(108, 92, 231, 0.35);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 28px rgba(108, 92, 231, 0.45);
    color: #fff;
}

.btn-primary:active {
    transform: translateY(0);
    box-shadow: 0 2px 10px rgba(108, 92, 231, 0.3);
}

.btn-outline {
    background: transparent;
    color: var(--primary);
    border: 2px solid var(--primary);
}

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

.btn-light {
    background: rgba(255, 255, 255, 0.95);
    color: var(--dark);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
}

.btn-light:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
    color: var(--primary);
}

.btn-accent {
    background: linear-gradient(135deg, var(--accent), #ffd06e);
    color: #3b2500;
    box-shadow: 0 4px 18px rgba(247, 183, 49, 0.35);
}

.btn-accent:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 28px rgba(247, 183, 49, 0.5);
    color: #1f1400;
}

.btn:focus-visible {
    outline: 3px solid rgba(108, 92, 231, 0.4);
    outline-offset: 2px;
}

/* ===== Badges & Tags ===== */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 5px 14px;
    border-radius: 30px;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.03em;
}

.badge-primary {
    background: var(--primary-100);
    color: var(--primary-dark);
}

.badge-accent {
    background: var(--accent-100);
    color: #b07d00;
}

.category-tag {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 30px;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.05em;
    background: rgba(108, 92, 231, 0.92);
    color: #fff;
    backdrop-filter: blur(4px);
}

/* ===== Section header ===== */
.section-header {
    text-align: center;
    margin-bottom: 44px;
}

.section-header .section-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--primary);
    font-size: 14px;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    margin-bottom: 10px;
}

.section-header .section-eyebrow::before,
.section-header .section-eyebrow::after {
    content: '';
    width: 24px;
    height: 2px;
    background: var(--primary-light);
    border-radius: 2px;
}

.section-header h2 {
    font-size: clamp(1.8rem, 3vw, 2.5rem);
    font-weight: 800;
    color: var(--text-strong);
    line-height: 1.25;
    margin-bottom: 10px;
    letter-spacing: -0.01em;
}

.section-header p {
    color: var(--muted);
    font-size: 16px;
    max-width: 560px;
    margin: 0 auto;
}

/* ===== Header ===== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(11, 11, 26, 0.88);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    transition: all 0.4s ease;
}

.site-header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
}

.logo-icon {
    width: 40px;
    height: 40px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--primary), #8b5cf6);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 18px;
    box-shadow: 0 4px 16px rgba(108, 92, 231, 0.5);
    transition: transform 0.3s ease;
}

.logo:hover .logo-icon {
    transform: rotate(-8deg) scale(1.05);
}

.logo-text {
    color: #fff;
    font-size: 18px;
    font-weight: 800;
    letter-spacing: 0.02em;
    white-space: nowrap;
}

.main-nav {
    display: flex;
    align-items: center;
    gap: 6px;
    background: rgba(255, 255, 255, 0.06);
    border-radius: 40px;
    padding: 5px;
    border: 1px solid rgba(255, 255, 255, 0.06);
}

.main-nav a {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 9px 20px;
    border-radius: 40px;
    color: rgba(255, 255, 255, 0.75);
    font-size: 14px;
    font-weight: 600;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.main-nav a i {
    font-size: 13px;
    opacity: 0.8;
}

.main-nav a:hover {
    color: #fff;
    background: rgba(255, 255, 255, 0.1);
}

.main-nav a.active {
    background: linear-gradient(135deg, var(--primary), #8b5cf6);
    color: #fff;
    box-shadow: 0 4px 14px rgba(108, 92, 231, 0.45);
}

.header-cta {
    background: linear-gradient(135deg, var(--accent), #ffd06e);
    color: #3b2500;
    border-radius: 40px;
    padding: 9px 22px;
    font-size: 13px;
    font-weight: 700;
    display: inline-flex;
    align-items: center;
    gap: 7px;
    box-shadow: 0 4px 16px rgba(247, 183, 49, 0.35);
    transition: all 0.3s ease;
}

.header-cta:hover {
    transform: translateY(-2px) scale(1.02);
    box-shadow: 0 8px 24px rgba(247, 183, 49, 0.5);
    color: #1f1400;
}

/* ===== Article Hero ===== */
.article-hero {
    position: relative;
    min-height: 520px;
    padding: 140px 0 80px;
    background:
        linear-gradient(135deg, rgba(11, 11, 26, 0.96) 0%, rgba(17, 17, 40, 0.88) 45%, rgba(80, 60, 190, 0.52) 100%),
        url('/assets/images/backpic/back-2.png') center / cover no-repeat;
    color: #fff;
    overflow: hidden;
}

.article-hero::before {
    content: '';
    position: absolute;
    top: -200px;
    right: -120px;
    width: 500px;
    height: 500px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(108, 92, 231, 0.25) 0%, transparent 70%);
    pointer-events: none;
}

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

.breadcrumb {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: 32px;
    flex-wrap: wrap;
}

.breadcrumb a {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    color: rgba(255, 255, 255, 0.7);
    transition: color 0.3s ease;
}

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

.breadcrumb .fa-angle-right {
    font-size: 11px;
    opacity: 0.5;
}

.breadcrumb span {
    color: rgba(255, 255, 255, 0.95);
    font-weight: 600;
    max-width: 300px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(8px);
    padding: 6px 16px;
    border-radius: 30px;
    font-size: 13px;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 20px;
}

.article-hero h1 {
    font-size: clamp(1.9rem, 4vw, 3rem);
    font-weight: 900;
    line-height: 1.25;
    letter-spacing: -0.015em;
    max-width: 850px;
    margin-bottom: 16px;
    text-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

.hero-desc {
    font-size: 16px;
    line-height: 1.9;
    color: rgba(255, 255, 255, 0.75);
    max-width: 640px;
    margin-bottom: 28px;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
}

.hero-meta {
    display: flex;
    align-items: center;
    gap: 24px;
    flex-wrap: wrap;
}

.meta-item {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.65);
}

.meta-item i {
    color: var(--accent);
    font-size: 14px;
}

/* ===== Article Main ===== */
.article-main {
    padding: 60px 0 80px;
    background: var(--light);
}

.article-card {
    background: #fff;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    padding: 40px 44px;
    border: 1px solid var(--border);
}

.article-content {
    font-size: 1rem;
    line-height: 2;
    color: var(--text);
}

.article-content h2 {
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--text-strong);
    margin: 2.8rem 0 1.2rem;
    padding-left: 16px;
    border-left: 4px solid var(--primary);
    border-radius: 0 4px 4px 0;
    line-height: 1.4;
}

.article-content h3 {
    font-size: 1.28rem;
    font-weight: 700;
    color: var(--text-strong);
    margin: 2.2rem 0 1rem;
    line-height: 1.5;
}

.article-content h4 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-strong);
    margin: 1.8rem 0 0.8rem;
}

.article-content p {
    margin-bottom: 1.5rem;
}

.article-content a {
    color: var(--primary);
    text-decoration: underline;
    text-underline-offset: 3px;
    text-decoration-color: rgba(108, 92, 231, 0.35);
    transition: color 0.3s ease, text-decoration-color 0.3s ease;
}

.article-content a:hover {
    color: var(--primary-dark);
    text-decoration-color: var(--primary-dark);
}

.article-content img {
    border-radius: var(--radius-md);
    margin: 2rem auto;
    box-shadow: var(--shadow-md);
}

.article-content blockquote {
    border-left: 4px solid var(--primary);
    background: var(--primary-100);
    padding: 1.4rem 1.8rem;
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    margin: 2rem 0;
    color: var(--text);
    font-weight: 500;
}

.article-content blockquote p {
    margin-bottom: 0;
}

.article-content ul,
.article-content ol {
    margin: 1.2rem 0 1.8rem;
    padding-left: 1.5rem;
}

.article-content ul li,
.article-content ol li {
    margin-bottom: 0.6rem;
    padding-left: 6px;
}

.article-content ul li::marker {
    color: var(--primary);
}

.article-content hr {
    border: none;
    height: 1px;
    background: var(--border);
    margin: 2.5rem 0;
}

.article-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 2rem 0;
    font-size: 0.95rem;
}

.article-content table th {
    background: var(--primary-100);
    color: var(--text-strong);
    font-weight: 700;
    padding: 12px 16px;
    border: 1px solid var(--border);
    text-align: left;
}

.article-content table td {
    padding: 10px 16px;
    border: 1px solid var(--border);
}

.article-content table tr:nth-child(even) td {
    background: #fafbfe;
}

/* Article footer info */
.article-footer-info {
    margin-top: 40px;
    padding-top: 28px;
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 18px;
}

.tag-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.tag-list .badge {
    background: var(--light);
    color: var(--muted);
    border: 1px solid var(--border);
    transition: all 0.3s ease;
}

.tag-list .badge:hover {
    background: var(--primary-100);
    color: var(--primary-dark);
    border-color: var(--primary-light);
}

.share-box {
    display: flex;
    align-items: center;
    gap: 10px;
}

.share-box .share-label {
    font-size: 13px;
    color: var(--muted);
    margin-right: 4px;
}

.share-btn {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 15px;
    color: #fff;
    transition: all 0.3s ease;
}

.share-btn:hover {
    transform: translateY(-3px) scale(1.05);
}

.share-btn.wechat {
    background: #09bb07;
    box-shadow: 0 4px 12px rgba(9, 187, 7, 0.3);
}

.share-btn.weibo {
    background: #e6162d;
    box-shadow: 0 4px 12px rgba(230, 22, 45, 0.3);
}

.share-btn.qq {
    background: #12b7f5;
    box-shadow: 0 4px 12px rgba(18, 183, 245, 0.3);
}

/* Article empty state */
.article-empty {
    text-align: center;
    padding: 80px 30px;
}

.article-empty .empty-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 88px;
    height: 88px;
    border-radius: 50%;
    background: var(--primary-100);
    color: var(--primary);
    font-size: 36px;
    margin: 0 auto 24px;
}

.article-empty h2 {
    font-size: 28px;
    font-weight: 800;
    color: var(--text-strong);
    margin-bottom: 12px;
}

.article-empty p {
    color: var(--muted);
    max-width: 400px;
    margin: 0 auto 28px;
}

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

.side-widget {
    background: #fff;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
    padding: 28px;
}

.widget-title {
    font-size: 17px;
    font-weight: 800;
    color: var(--text-strong);
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.widget-title i {
    color: var(--primary);
    font-size: 16px;
}

.side-guide-img {
    position: relative;
    border-radius: var(--radius-md);
    overflow: hidden;
    min-height: 220px;
}

.side-guide-img img {
    width: 100%;
    height: 100%;
    min-height: 220px;
    object-fit: cover;
}

.side-guide-overlay {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 22px;
    background: linear-gradient(180deg, rgba(11, 11, 26, 0.05) 30%, rgba(11, 11, 26, 0.85) 100%);
    color: #fff;
}

.side-guide-overlay .widget-tag {
    align-self: flex-start;
    background: var(--accent);
    color: #1f1400;
    padding: 3px 12px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 700;
    margin-bottom: 10px;
}

.side-guide-overlay h3 {
    font-size: 20px;
    font-weight: 800;
    margin-bottom: 6px;
}

.side-guide-overlay p {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.75);
    margin-bottom: 14px;
    line-height: 1.6;
}

.side-guide-overlay .btn {
    align-self: flex-start;
}

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

.side-tags a {
    display: inline-block;
    padding: 6px 14px;
    border-radius: 30px;
    background: var(--light);
    color: var(--text);
    font-size: 13px;
    font-weight: 500;
    border: 1px solid var(--border);
    transition: all 0.3s ease;
}

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

.side-list {
    list-style: none;
    margin: 0;
}

.side-list li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 9px 0;
    border-bottom: 1px dashed var(--border);
    font-size: 14px;
    color: var(--text);
    line-height: 1.6;
}

.side-list li:last-child {
    border-bottom: none;
}

.side-list li i {
    color: var(--primary);
    font-size: 15px;
    margin-top: 3px;
}

/* ===== Related Section ===== */
.related-section {
    padding: 80px 0;
    background: var(--white);
}

.related-card {
    display: block;
    background: #fff;
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: all var(--transition);
    height: 100%;
}

.related-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-light);
}

.related-cover {
    position: relative;
    height: 180px;
    overflow: hidden;
}

.related-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.related-card:hover .related-cover img {
    transform: scale(1.08);
}

.related-cover .category-tag {
    position: absolute;
    top: 12px;
    left: 12px;
}

.related-body {
    padding: 20px 22px 24px;
}

.related-body h3 {
    font-size: 16px;
    font-weight: 700;
    line-height: 1.5;
    color: var(--text-strong);
    margin-bottom: 10px;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    transition: color 0.3s ease;
}

.related-card:hover .related-body h3 {
    color: var(--primary);
}

.related-body p {
    font-size: 13px;
    color: var(--muted);
    line-height: 1.7;
    margin-bottom: 14px;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

.related-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 12px;
    color: var(--muted);
}

.related-meta .fa-calendar-alt {
    margin-right: 5px;
}

.read-more {
    color: var(--primary);
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 5px;
    transition: gap 0.3s ease;
}

.related-card:hover .read-more {
    gap: 9px;
}

/* ===== FAQ Section ===== */
.faq-section {
    padding: 80px 0;
    background: var(--light);
}

.faq-grid {
    margin-top: 10px;
}

.faq-item {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    margin-bottom: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: box-shadow 0.3s ease;
}

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

.faq-item summary {
    cursor: pointer;
    padding: 20px 26px;
    font-size: 15px;
    font-weight: 700;
    color: var(--text-strong);
    list-style: none;
    display: flex;
    align-items: center;
    gap: 14px;
    position: relative;
    transition: color 0.3s ease;
}

.faq-item summary::-webkit-details-marker {
    display: none;
}

.faq-item summary::before {
    content: '\f059';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    font-size: 17px;
    color: var(--primary);
    flex-shrink: 0;
}

.faq-item summary::after {
    content: '\f078';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    font-size: 14px;
    margin-left: auto;
    color: var(--muted);
    transition: transform 0.3s ease;
}

.faq-item[open] summary::after {
    transform: rotate(180deg);
}

.faq-item[open] summary {
    color: var(--primary);
    border-bottom: 1px solid var(--border);
    background: var(--primary-100);
}

.faq-answer {
    padding: 20px 26px 22px 38px;
    font-size: 14px;
    color: var(--text);
    line-height: 1.9;
    background: #fff;
}

/* ===== CTA Section ===== */
.cta-section {
    padding: 90px 0;
    background:
        linear-gradient(120deg, rgba(11, 11, 26, 0.95), rgba(30, 27, 75, 0.82)),
        url('/assets/images/backpic/back-3.png') center / cover no-repeat;
    position: relative;
    color: #fff;
    text-align: center;
}

.cta-box {
    max-width: 720px;
    margin: 0 auto;
    position: relative;
    z-index: 2;
}

.cta-box h2 {
    font-size: clamp(1.8rem, 3.4vw, 2.8rem);
    font-weight: 900;
    line-height: 1.3;
    margin-bottom: 16px;
    letter-spacing: -0.01em;
}

.cta-box p {
    font-size: 16px;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.75);
    margin-bottom: 36px;
}

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

.cta-note {
    margin-top: 24px;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.5);
}

.cta-note i {
    color: var(--accent);
}

/* ===== Footer ===== */
.site-footer {
    background: var(--dark);
    color: rgba(255, 255, 255, 0.65);
    padding: 70px 0 0;
    position: relative;
}

.site-footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    width: 80%;
    height: 1px;
    transform: translateX(-50%);
    background: linear-gradient(90deg, transparent, rgba(108, 92, 231, 0.5), transparent);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr;
    gap: 48px;
    padding-bottom: 48px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.07);
}

.footer-brand .logo {
    margin-bottom: 20px;
}

.footer-brand p {
    font-size: 14px;
    line-height: 1.9;
    color: rgba(255, 255, 255, 0.55);
    max-width: 380px;
}

.footer-col h4 {
    color: #fff;
    font-size: 15px;
    font-weight: 700;
    margin-bottom: 20px;
    letter-spacing: 0.04em;
}

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

.footer-col ul li {
    margin-bottom: 12px;
}

.footer-col ul li a {
    color: rgba(255, 255, 255, 0.55);
    font-size: 14px;
    transition: color 0.3s ease, padding-left 0.3s ease;
    display: inline-flex;
    align-items: center;
}

.footer-col ul li a i {
    font-size: 11px;
    margin-right: 8px;
    color: rgba(255, 255, 255, 0.25);
    transition: color 0.3s ease;
}

.footer-col ul li a:hover {
    color: var(--accent);
    padding-left: 4px;
}

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

.footer-bottom {
    padding: 24px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.35);
}

.footer-bottom .domain {
    color: var(--primary-light);
    font-weight: 600;
    letter-spacing: 0.04em;
}

/* ===== Foundation column fix ===== */
.columns {
    margin-bottom: 20px;
}

/* ===== Responsive ===== */
@media screen and (max-width: 1024px) {
    .desc-container {
        padding: 0 20px;
    }

    .article-hero {
        padding: 120px 0 60px;
        min-height: auto;
    }

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

    .header-cta {
        display: none;
    }

    .main-nav a {
        padding: 8px 14px;
        font-size: 13px;
    }

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

@media screen and (max-width: 768px) {
    .site-header .container {
        height: auto;
        flex-wrap: wrap;
        padding-top: 12px;
        padding-bottom: 12px;
        gap: 10px;
    }

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

    .main-nav {
        order: 3;
        width: 100%;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
        gap: 4px;
        padding: 4px;
        border-radius: 14px;
    }

    .main-nav::-webkit-scrollbar {
        display: none;
    }

    .main-nav a {
        flex-shrink: 0;
        padding: 8px 14px;
        font-size: 13px;
    }

    .article-hero {
        padding: 110px 0 48px;
    }

    .article-hero h1 {
        font-size: 1.7rem;
    }

    .hero-desc {
        font-size: 14px;
        -webkit-line-clamp: 4;
    }

    .hero-meta {
        gap: 12px;
    }

    .article-main {
        padding: 40px 0 60px;
    }

    .article-card {
        padding: 24px 20px;
        border-radius: 18px;
    }

    .article-content {
        font-size: 15px;
        line-height: 1.95;
    }

    .article-content h2 {
        font-size: 1.35rem;
        margin-top: 2rem;
    }

    .article-content h3 {
        font-size: 1.15rem;
    }

    .article-footer-info {
        flex-direction: column;
        align-items: flex-start;
    }

    .related-section {
        padding: 56px 0;
    }

    .faq-section {
        padding: 56px 0;
    }

    .faq-item summary {
        padding: 16px 18px;
        font-size: 14px;
    }

    .faq-answer {
        padding: 16px 18px 18px 34px;
        font-size: 13px;
    }

    .cta-section {
        padding: 64px 0;
    }

    .cta-buttons .btn {
        width: 100%;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 36px;
    }

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

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

    .logo-text {
        font-size: 16px;
    }

    .logo-icon {
        width: 34px;
        height: 34px;
        font-size: 15px;
        border-radius: 10px;
    }

    .article-hero h1 {
        font-size: 1.45rem;
    }

    .hero-badge {
        padding: 5px 12px;
        font-size: 12px;
    }

    .breadcrumb {
        font-size: 12px;
        margin-bottom: 22px;
    }

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

    .section-header h2 {
        font-size: 1.5rem;
    }

    .section-header p {
        font-size: 14px;
    }

    .side-widget {
        padding: 20px;
    }

    .related-cover {
        height: 160px;
    }

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

    .related-body h3 {
        font-size: 14px;
    }

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

    .cta-box p {
        font-size: 14px;
    }

    .btn-lg {
        padding: 13px 24px;
        font-size: 14px;
    }

    .tag-list {
        gap: 6px;
    }

    .tag-list .badge {
        font-size: 11px;
        padding: 4px 10px;
    }

    .share-box {
        flex-wrap: wrap;
    }

    .share-btn {
        width: 34px;
        height: 34px;
        font-size: 13px;
    }
}