/* roulang page: index */
:root {
            --brand-primary: #00E676;
            --brand-orange: #FF6D00;
            --brand-red: #FF1744;
            --brand-blue: #00B0FF;
            --bg-main: #0F141C;
            --bg-card: #1A2230;
            --bg-card-light: #242E42;
            --bg-deep: #0A0D14;
            --text-title: #FFFFFF;
            --text-body: #94A3B8;
            --text-muted: #64748B;
            --border-color: rgba(255, 255, 255, 0.08);
            --gradient-accent: linear-gradient(135deg, #FF6D00 0%, #FF1744 100%);
            --gradient-lime: linear-gradient(135deg, #00E676 0%, #00B0FF 100%);
            --radius-lg: 24px;
            --radius-md: 16px;
            --radius-pill: 9999px;
            --shadow-card: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
            --shadow-glow: 0 0 25px rgba(0, 230, 118, 0.2);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background-color: var(--bg-main);
            color: var(--text-body);
            line-height: 1.75;
            letter-spacing: 0.02em;
        }

        body {
            overflow-x: hidden;
            background-color: var(--bg-main);
        }

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

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

        .container {
            width: 100%;
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* 顶部通栏与主导航 */
        .top-bar {
            background: rgba(10, 13, 20, 0.95);
            border-bottom: 1px solid var(--border-color);
            font-size: 0.85rem;
            color: var(--text-muted);
            padding: 8px 0;
        }

        .top-bar-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .header-main {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(15, 20, 28, 0.85);
            backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-color);
            padding: 16px 0;
        }

        .nav-wrapper {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .logo {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--text-title);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .logo-badge {
            background: var(--gradient-accent);
            color: #fff;
            font-size: 0.75rem;
            padding: 2px 8px;
            border-radius: var(--radius-pill);
            text-transform: uppercase;
        }

        .nav-links {
            display: flex;
            gap: 24px;
            list-style: none;
        }

        .nav-links a {
            color: #cbd5e1;
            font-weight: 500;
            font-size: 0.95rem;
        }

        .nav-links a:hover {
            color: var(--brand-primary);
        }

        .nav-cta {
            background: var(--gradient-lime);
            color: #051b11;
            font-weight: 700;
            padding: 10px 24px;
            border-radius: var(--radius-pill);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .nav-cta:hover {
            box-shadow: var(--shadow-glow);
            transform: translateY(-2px);
        }

        /* 统一标题与副标 */
        .section-header {
            text-align: center;
            max-width: 780px;
            margin: 0 auto 56px auto;
        }

        .section-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 16px;
            background: rgba(0, 230, 118, 0.1);
            border: 1px solid rgba(0, 230, 118, 0.3);
            border-radius: var(--radius-pill);
            color: var(--brand-primary);
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 16px;
        }

        .section-title {
            font-size: 2.25rem;
            font-weight: 800;
            color: var(--text-title);
            line-height: 1.3;
            margin-bottom: 16px;
        }

        .section-desc {
            font-size: 1.05rem;
            color: var(--text-body);
            line-height: 1.8;
        }

        /* Section 通用 */
        section {
            padding: 80px 0;
            position: relative;
        }

        .bg-deep {
            background-color: var(--bg-deep);
        }

        /* 1. Hero 拼团转化与全宽横幅 */
        .hero-section {
            padding: 90px 0 70px 0;
            background: radial-gradient(circle at 50% 20%, rgba(255, 109, 0, 0.15) 0%, rgba(15, 20, 28, 1) 70%), url('/assets/images/207de663e8019137.jpg') center/cover no-repeat;
            background-blend-mode: overlay;
            border-bottom: 1px solid var(--border-color);
        }

        .hero-banner-card {
            background: rgba(26, 34, 48, 0.85);
            backdrop-filter: blur(20px);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 32px;
            padding: 48px;
            box-shadow: 0 20px 50px rgba(0, 0, 0, 0.6);
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 40px;
            align-items: center;
        }

        .hero-title {
            font-size: 3rem;
            font-weight: 900;
            color: var(--text-title);
            line-height: 1.25;
            margin-bottom: 20px;
        }

        .hero-title span {
            background: var(--gradient-accent);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-lead {
            font-size: 1.1rem;
            color: #cbd5e1;
            margin-bottom: 32px;
        }

        .group-status {
            display: flex;
            align-items: center;
            gap: 16px;
            background: rgba(10, 13, 20, 0.6);
            padding: 14px 20px;
            border-radius: var(--radius-md);
            border: 1px solid rgba(0, 230, 118, 0.2);
            margin-bottom: 32px;
        }

        .group-avatars {
            display: flex;
        }

        .group-avatars div {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            border: 2px solid var(--bg-card);
            margin-left: -8px;
            background-color: #334155;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.75rem;
            color: #fff;
        }

        .group-avatars div:first-child {
            margin-left: 0;
            background: var(--gradient-lime);
            color: #051b11;
        }

        .group-text {
            font-size: 0.95rem;
            color: #f1f5f9;
        }

        .group-text strong {
            color: var(--brand-primary);
        }

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

        .btn {
            padding: 14px 32px;
            border-radius: var(--radius-pill);
            font-weight: 700;
            font-size: 1rem;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: var(--transition);
        }

        .btn-primary {
            background: var(--gradient-accent);
            color: #fff;
            box-shadow: 0 10px 25px rgba(255, 109, 0, 0.3);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 15px 30px rgba(255, 109, 0, 0.4);
        }

        .btn-outline {
            border: 1px solid rgba(255, 255, 255, 0.2);
            background: rgba(255, 255, 255, 0.05);
            color: #fff;
        }

        .btn-outline:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #fff;
        }

        .hero-media-cover {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-color);
        }

        .hero-media-cover img {
            width: 100%;
            height: 380px;
            object-fit: cover;
        }

        .media-badge-float {
            position: absolute;
            bottom: 16px;
            left: 16px;
            right: 16px;
            background: rgba(15, 20, 28, 0.9);
            backdrop-filter: blur(8px);
            padding: 12px 16px;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        /* 2. KPI 看板与技术指标 */
        .kpi-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .kpi-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            padding: 28px;
            border-radius: var(--radius-lg);
            text-align: center;
            transition: var(--transition);
        }

        .kpi-card:hover {
            border-color: var(--brand-primary);
            transform: translateY(-4px);
        }

        .kpi-val {
            font-size: 2.8rem;
            font-weight: 900;
            color: var(--text-title);
            margin-bottom: 8px;
            line-height: 1;
        }

        .kpi-val span {
            color: var(--brand-primary);
            font-size: 1.5rem;
        }

        .kpi-label {
            font-size: 1.05rem;
            font-weight: 700;
            color: #e2e8f0;
            margin-bottom: 6px;
        }

        .kpi-desc {
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        /* 3. 服务矩阵（核心优势 6宫格） */
        .grid-6 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .card-service {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 32px;
            position: relative;
            transition: var(--transition);
        }

        .card-service:hover {
            border-color: rgba(0, 230, 118, 0.4);
            transform: translateY(-4px);
            box-shadow: var(--shadow-card);
        }

        .service-icon-box {
            width: 54px;
            height: 54px;
            border-radius: 16px;
            background: rgba(0, 230, 118, 0.1);
            color: var(--brand-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            font-weight: 800;
            margin-bottom: 20px;
            border: 1px solid rgba(0, 230, 118, 0.2);
        }

        .card-service h3 {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--text-title);
            margin-bottom: 12px;
        }

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

        /* 4. 热门专题与产品功能（3张纵向卡） */
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .feature-big-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-color);
            overflow: hidden;
            display: flex;
            flex-direction: column;
            transition: var(--transition);
        }

        .feature-big-card:hover {
            transform: translateY(-6px);
            border-color: var(--brand-orange);
            box-shadow: 0 16px 36px rgba(0,0,0,0.4);
        }

        .feature-img-wrapper {
            height: 220px;
            overflow: hidden;
            position: relative;
        }

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

        .feature-big-card:hover .feature-img-wrapper img {
            transform: scale(1.05);
        }

        .feature-body {
            padding: 28px;
            flex-grow: 1;
            display: flex;
            flex-direction: column;
        }

        .feature-tag {
            align-self: flex-start;
            font-size: 0.75rem;
            padding: 4px 10px;
            border-radius: var(--radius-pill);
            background: rgba(255, 109, 0, 0.15);
            color: var(--brand-orange);
            font-weight: 600;
            margin-bottom: 12px;
        }

        .feature-body h3 {
            font-size: 1.35rem;
            color: var(--text-title);
            margin-bottom: 12px;
        }

        .feature-body p {
            font-size: 0.92rem;
            color: var(--text-body);
            line-height: 1.7;
        }

        /* 5. 深色剪辑引擎与步骤流程 (方法步骤三连) */
        .process-flow {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-top: 40px;
            position: relative;
        }

        .flow-step-card {
            background: rgba(26, 34, 48, 0.6);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 32px;
            position: relative;
        }

        .step-num {
            font-size: 3rem;
            font-weight: 900;
            line-height: 1;
            color: rgba(255, 255, 255, 0.08);
            position: absolute;
            top: 20px;
            right: 24px;
        }

        .flow-step-card h3 {
            font-size: 1.25rem;
            color: var(--brand-primary);
            margin-bottom: 12px;
        }

        .flow-step-card p {
            font-size: 0.95rem;
            color: #cbd5e1;
            line-height: 1.7;
        }

        /* 6. 结果对比 (对比我们 vs 传统) */
        .comparison-table-wrap {
            background: var(--bg-card);
            border-radius: 28px;
            border: 1px solid var(--border-color);
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }

        .table-row {
            display: grid;
            grid-template-columns: 1.2fr 1fr 1fr;
            padding: 22px 32px;
            border-bottom: 1px solid var(--border-color);
            align-items: center;
        }

        .table-row:last-child {
            border-bottom: none;
        }

        .table-head {
            background: rgba(10, 13, 20, 0.6);
            font-weight: 700;
            color: var(--text-title);
            font-size: 1.05rem;
        }

        .col-highlight {
            color: var(--brand-primary);
            font-weight: 600;
        }

        .col-dim {
            color: var(--text-muted);
        }

        /* 7. 里程碑与发展轨迹 */
        .timeline-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .timeline-box {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 24px;
            border-top: 3px solid var(--brand-orange);
            position: relative;
        }

        .timeline-box .badge-year {
            font-weight: 800;
            color: var(--brand-orange);
            font-size: 1.2rem;
            margin-bottom: 8px;
        }

        .timeline-box h4 {
            font-size: 1.05rem;
            color: var(--text-title);
            margin-bottom: 8px;
        }

        .timeline-box p {
            font-size: 0.85rem;
            color: var(--text-body);
            line-height: 1.6;
        }

        /* 8. 创作者叙事与达人案例 */
        .story-list {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }

        .story-item {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-color);
            padding: 32px;
            display: grid;
            grid-template-columns: 260px 1fr;
            gap: 32px;
            align-items: center;
        }

        .story-cover {
            height: 180px;
            border-radius: var(--radius-md);
            overflow: hidden;
        }

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

        .story-info h3 {
            font-size: 1.35rem;
            color: var(--text-title);
            margin-bottom: 8px;
        }

        .story-meta {
            display: flex;
            gap: 16px;
            margin-bottom: 12px;
            font-size: 0.85rem;
            color: var(--brand-primary);
        }

        .story-info p {
            font-size: 0.95rem;
            color: var(--text-body);
            line-height: 1.7;
        }

        /* 9. 用户真实口碑评价 */
        .testimonials-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .testi-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 24px;
            border: 1px solid var(--border-color);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .testi-card p {
            font-size: 0.92rem;
            color: #cbd5e1;
            margin-bottom: 16px;
            line-height: 1.65;
        }

        .testi-author {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .testi-avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--gradient-lime);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            color: #051b11;
            font-size: 0.85rem;
        }

        .testi-name {
            font-size: 0.95rem;
            color: var(--text-title);
            font-weight: 600;
        }

        .testi-role {
            font-size: 0.75rem;
            color: var(--text-muted);
        }

        /* 10. 适用人群与场景细分 */
        .audience-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .audience-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 24px;
            text-align: center;
            transition: var(--transition);
        }

        .audience-card:hover {
            border-color: var(--brand-primary);
            transform: translateY(-4px);
        }

        .audience-icon {
            font-size: 2rem;
            margin-bottom: 12px;
        }

        .audience-card h3 {
            font-size: 1.15rem;
            color: var(--text-title);
            margin-bottom: 8px;
        }

        .audience-card p {
            font-size: 0.85rem;
            color: var(--text-body);
            line-height: 1.6;
        }

        /* 11. 资讯动态与赛事看点 */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .news-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-color);
            overflow: hidden;
            display: flex;
            flex-direction: column;
        }

        .news-cover {
            height: 160px;
            overflow: hidden;
        }

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

        .news-body {
            padding: 24px;
            flex-grow: 1;
        }

        .news-date {
            font-size: 0.75rem;
            color: var(--brand-orange);
            margin-bottom: 8px;
        }

        .news-body h3 {
            font-size: 1.15rem;
            color: var(--text-title);
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .news-body p {
            font-size: 0.88rem;
            color: var(--text-body);
            line-height: 1.6;
        }

        /* 12. 平台保障与合规体系 */
        .security-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .security-card {
            background: rgba(26, 34, 48, 0.5);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 28px;
        }

        .security-card h3 {
            font-size: 1.2rem;
            color: var(--brand-primary);
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .security-card p {
            font-size: 0.92rem;
            color: var(--text-body);
            line-height: 1.7;
        }

        /* 13. 快速解答与常见问题 */
        .faq-wrap {
            max-width: 860px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
        }

        .faq-summary {
            padding: 20px 24px;
            font-weight: 700;
            color: var(--text-title);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            user-select: none;
        }

        .faq-summary:hover {
            color: var(--brand-primary);
        }

        .faq-content {
            padding: 0 24px 20px 24px;
            font-size: 0.95rem;
            color: var(--text-body);
            line-height: 1.75;
        }

        /* 底部页脚 */
        footer {
            background-color: var(--bg-deep);
            border-top: 1px solid var(--border-color);
            padding: 60px 0 30px 0;
            font-size: 0.9rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-brand h4 {
            font-size: 1.3rem;
            color: var(--text-title);
            margin-bottom: 16px;
        }

        .footer-brand p {
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 16px;
        }

        .footer-col h5 {
            font-size: 1rem;
            color: var(--text-title);
            margin-bottom: 16px;
        }

        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-col a {
            color: var(--text-muted);
        }

        .footer-col a:hover {
            color: var(--brand-primary);
        }

        .footer-bottom {
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: var(--text-muted);
            font-size: 0.8rem;
        }

        /* 响应式断点 */
        @media (max-width: 1024px) {
            .hero-banner-card {
                grid-template-columns: 1fr;
            }
            .kpi-grid, .grid-6, .grid-3, .process-flow, .timeline-grid, .testimonials-grid, .audience-grid, .news-grid, .security-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }
            .hero-title {
                font-size: 2.2rem;
            }
            .kpi-grid, .grid-6, .grid-3, .process-flow, .timeline-grid, .testimonials-grid, .audience-grid, .news-grid, .security-grid {
                grid-template-columns: 1fr;
            }
            .story-item {
                grid-template-columns: 1fr;
            }
            .story-cover {
                height: 200px;
            }
            .table-row {
                grid-template-columns: 1fr;
                gap: 8px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .footer-bottom {
                flex-direction: column;
                gap: 12px;
                text-align: center;
            }
        }