/* roulang page: index */
:root {
            --bg-main: #060B19;
            --bg-secondary: #0B1528;
            --bg-elevated: #0E1B38;
            --brand-primary: #0066FF;
            --brand-accent: #38BDF8;
            --neon-teal: #00F5D4;
            --text-title: #FFFFFF;
            --text-body: #E2E8F0;
            --text-muted: #94A3B8;
            --glass-bg: rgba(15, 23, 42, 0.72);
            --glass-border: rgba(56, 189, 248, 0.16);
            --glass-border-hover: rgba(0, 245, 212, 0.45);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --shadow-glow: 0 0 25px rgba(0, 102, 255, 0.45);
            --transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
        }

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

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

        body {
            background-color: var(--bg-main);
            color: var(--text-body);
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            line-height: 1.7;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
        }

        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;
        }

        /* 顶部导航 */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(6, 11, 25, 0.88);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--glass-border);
        }

        .header-topbar {
            background: rgba(11, 21, 40, 0.6);
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            font-size: 0.82rem;
            color: var(--text-muted);
            padding: 6px 0;
        }

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

        .topbar-tag {
            color: var(--neon-teal);
            font-weight: 500;
        }

        .nav-wrapper {
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 72px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--text-title);
            letter-spacing: -0.5px;
        }

        .logo-badge {
            background: linear-gradient(135deg, var(--brand-primary), var(--neon-teal));
            color: #060B19;
            font-size: 0.72rem;
            padding: 2px 7px;
            border-radius: 4px;
            font-weight: 800;
            text-transform: uppercase;
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
        }

        .nav-menu a {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-muted);
            position: relative;
            padding: 6px 0;
        }

        .nav-menu a:hover,
        .nav-menu a.active {
            color: var(--brand-accent);
        }

        .nav-menu a.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--neon-teal);
            border-radius: 2px;
        }

        /* 统一通用按钮 */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            font-size: 0.95rem;
            font-weight: 600;
            border-radius: var(--radius-sm);
            cursor: pointer;
            transition: var(--transition);
            border: none;
            white-space: nowrap;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--brand-primary) 0%, #0052cc 60%, var(--neon-teal) 100%);
            color: #ffffff;
            box-shadow: 0 4px 18px rgba(0, 102, 255, 0.4);
        }

        .btn-primary:hover {
            box-shadow: 0 6px 26px rgba(0, 245, 212, 0.5);
            transform: translateY(-2px);
        }

        .btn-outline {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--glass-border);
            color: var(--brand-accent);
        }

        .btn-outline:hover {
            background: rgba(56, 189, 248, 0.1);
            border-color: var(--brand-accent);
            color: #ffffff;
        }

        /* 通用板块与排版 */
        .section {
            padding: 90px 0;
            position: relative;
        }

        .section-alt {
            background: linear-gradient(180deg, var(--bg-main) 0%, var(--bg-secondary) 50%, var(--bg-main) 100%);
        }

        .section-header {
            text-align: center;
            max-width: 760px;
            margin: 0 auto 56px;
        }

        .section-tag {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 1.5px;
            color: var(--neon-teal);
            margin-bottom: 12px;
            background: rgba(0, 245, 212, 0.1);
            padding: 4px 12px;
            border-radius: 30px;
            border: 1px solid rgba(0, 245, 212, 0.25);
        }

        .section-title {
            font-size: 2.3rem;
            color: var(--text-title);
            margin-bottom: 16px;
            font-weight: 700;
            line-height: 1.3;
        }

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

        /* 玻璃拟态卡片通用样式 */
        .glass-card {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-md);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            transition: var(--transition);
        }

        .glass-card:hover {
            border-color: var(--glass-border-hover);
            box-shadow: 0 10px 30px -10px rgba(0, 102, 255, 0.35);
            transform: translateY(-4px);
        }

        /* 板块 1: Hero 创作者/主页式版式 */
        .hero-section {
            padding: 60px 0 90px;
            background: radial-gradient(circle at 50% 20%, rgba(0, 102, 255, 0.18) 0%, rgba(6, 11, 25, 0) 70%);
            position: relative;
        }

        .hero-banner {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--glass-border);
            height: 380px;
            margin-bottom: -70px;
            background-color: #0b1528;
        }

        .hero-banner-img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            filter: brightness(0.65);
        }

        .hero-banner-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(6, 11, 25, 0.2) 0%, rgba(6, 11, 25, 0.95) 100%);
        }

        .hero-profile-card {
            position: relative;
            z-index: 10;
            display: flex;
            justify-content: space-between;
            align-items: flex-end;
            padding: 36px 40px;
            background: rgba(11, 21, 40, 0.85);
            backdrop-filter: blur(20px);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-md);
            margin-bottom: 40px;
        }

        .hero-profile-main {
            display: flex;
            gap: 28px;
            align-items: center;
        }

        .hero-avatar {
            width: 110px;
            height: 110px;
            border-radius: 20px;
            border: 3px solid var(--neon-teal);
            object-fit: cover;
            box-shadow: 0 0 20px rgba(0, 245, 212, 0.4);
        }

        .hero-meta h1 {
            font-size: 2.1rem;
            color: var(--text-title);
            margin-bottom: 8px;
            font-weight: 700;
        }

        .hero-meta p {
            color: var(--text-muted);
            font-size: 0.95rem;
            max-width: 580px;
            line-height: 1.6;
        }

        .hero-badges {
            display: flex;
            gap: 12px;
            margin-top: 12px;
        }

        .badge-pill {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(56, 189, 248, 0.12);
            color: var(--brand-accent);
            border: 1px solid rgba(56, 189, 248, 0.3);
            padding: 4px 12px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
        }

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

        /* 板块 2: 左资讯流 + 右热榜 */
        .content-split-grid {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 32px;
        }

        .stream-card {
            padding: 24px;
            margin-bottom: 20px;
            display: flex;
            gap: 22px;
        }

        .stream-thumb {
            width: 220px;
            height: 140px;
            border-radius: var(--radius-sm);
            object-fit: cover;
            flex-shrink: 0;
        }

        .stream-info h3 {
            font-size: 1.2rem;
            color: var(--text-title);
            margin-bottom: 10px;
        }

        .stream-info p {
            font-size: 0.92rem;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 14px;
        }

        .stream-meta {
            display: flex;
            gap: 18px;
            font-size: 0.82rem;
            color: var(--brand-accent);
        }

        .rank-card {
            padding: 28px;
            height: fit-content;
        }

        .rank-card h3 {
            font-size: 1.25rem;
            color: var(--text-title);
            margin-bottom: 20px;
            border-left: 4px solid var(--neon-teal);
            padding-left: 12px;
        }

        .rank-list {
            list-style: none;
        }

        .rank-item {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 14px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }

        .rank-num {
            font-size: 1.1rem;
            font-weight: 800;
            width: 28px;
            height: 28px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 6px;
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-muted);
        }

        .rank-item:nth-child(1) .rank-num {
            background: rgba(0, 245, 212, 0.2);
            color: var(--neon-teal);
        }

        .rank-item:nth-child(2) .rank-num {
            background: rgba(56, 189, 248, 0.2);
            color: var(--brand-accent);
        }

        .rank-text {
            font-size: 0.92rem;
            color: var(--text-body);
            flex: 1;
        }

        .rank-heat {
            font-size: 0.8rem;
            color: var(--neon-teal);
            font-family: monospace;
        }

        /* 板块 3: 痛点深度剖析 */
        .pain-points-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .pain-card {
            padding: 32px;
            background: rgba(15, 23, 42, 0.8);
            border: 1px solid rgba(239, 68, 68, 0.2);
            border-radius: var(--radius-md);
            position: relative;
            overflow: hidden;
        }

        .pain-badge {
            display: inline-block;
            background: rgba(239, 68, 68, 0.15);
            color: #F87171;
            padding: 4px 10px;
            border-radius: 4px;
            font-size: 0.8rem;
            font-weight: 600;
            margin-bottom: 16px;
        }

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

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

        /* 板块 4: 全案服务矩阵 */
        .about-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .about-img-wrap {
            position: relative;
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--glass-border);
        }

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

        .about-badge-float {
            position: absolute;
            bottom: 20px;
            left: 20px;
            background: rgba(6, 11, 25, 0.85);
            backdrop-filter: blur(10px);
            padding: 12px 20px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--neon-teal);
            color: #ffffff;
            font-size: 0.9rem;
        }

        .about-content h3 {
            font-size: 1.85rem;
            color: var(--text-title);
            margin-bottom: 18px;
        }

        .about-content p {
            font-size: 0.98rem;
            color: var(--text-muted);
            margin-bottom: 20px;
            line-height: 1.8;
        }

        .feature-bullets {
            list-style: none;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 14px;
            margin-top: 24px;
        }

        .feature-bullet-item {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.92rem;
            color: var(--text-body);
        }

        .bullet-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--neon-teal);
        }

        /* 板块 5: 核心营销优势 */
        .advantage-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .adv-card {
            padding: 32px 28px;
        }

        .adv-icon-box {
            width: 52px;
            height: 52px;
            background: rgba(0, 102, 255, 0.15);
            border: 1px solid rgba(56, 189, 248, 0.3);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--neon-teal);
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 20px;
        }

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

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

        /* 板块 6: 热门体育营销产品矩阵 */
        .product-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
        }

        .prod-card {
            padding: 36px 30px;
            display: flex;
            flex-direction: column;
            position: relative;
        }

        .prod-card.featured {
            border-color: var(--neon-teal);
            background: rgba(14, 27, 56, 0.85);
            box-shadow: 0 10px 35px -8px rgba(0, 245, 212, 0.3);
            transform: scale(1.03);
        }

        .prod-tag-top {
            position: absolute;
            top: -12px;
            right: 28px;
            background: var(--neon-teal);
            color: #060B19;
            font-size: 0.75rem;
            font-weight: 700;
            padding: 3px 12px;
            border-radius: 20px;
        }

        .prod-card h3 {
            font-size: 1.45rem;
            color: var(--text-title);
            margin-bottom: 10px;
        }

        .prod-scope {
            font-size: 0.88rem;
            color: var(--brand-accent);
            margin-bottom: 20px;
        }

        .prod-specs {
            list-style: none;
            margin: 20px 0 30px;
            flex-grow: 1;
        }

        .prod-specs li {
            padding: 10px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            font-size: 0.9rem;
            color: var(--text-muted);
            display: flex;
            justify-content: space-between;
        }

        .prod-specs li span:last-child {
            color: var(--text-title);
            font-weight: 500;
        }

        /* 板块 7: 方法论与落地步骤 */
        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            position: relative;
        }

        .process-step-card {
            padding: 28px 22px;
            position: relative;
        }

        .step-number {
            font-size: 2.2rem;
            font-weight: 800;
            font-family: monospace;
            color: rgba(56, 189, 248, 0.25);
            margin-bottom: 14px;
        }

        .process-step-card h3 {
            font-size: 1.15rem;
            color: var(--text-title);
            margin-bottom: 10px;
        }

        .process-step-card p {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.65;
        }

        /* 板块 8: 数据指标大屏 */
        .metrics-banner {
            background: linear-gradient(135deg, rgba(0, 102, 255, 0.15), rgba(0, 245, 212, 0.1));
            border-top: 1px solid var(--glass-border);
            border-bottom: 1px solid var(--glass-border);
            padding: 56px 0;
        }

        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            text-align: center;
        }

        .metric-item .number {
            font-size: 3rem;
            font-weight: 800;
            color: var(--text-title);
            background: linear-gradient(135deg, #ffffff 40%, var(--neon-teal) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            line-height: 1.1;
            margin-bottom: 8px;
            font-family: monospace;
        }

        .metric-item .label {
            font-size: 0.95rem;
            color: var(--text-muted);
            letter-spacing: 0.5px;
        }

        /* 板块 9: 实战案例展示 */
        .cases-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 32px;
        }

        .case-card {
            border-radius: var(--radius-md);
            overflow: hidden;
            display: flex;
            flex-direction: column;
        }

        .case-card-img {
            height: 220px;
            width: 100%;
            object-fit: cover;
        }

        .case-card-body {
            padding: 28px;
        }

        .case-card-body h3 {
            font-size: 1.3rem;
            color: var(--text-title);
            margin-bottom: 12px;
        }

        .case-card-body p {
            font-size: 0.92rem;
            color: var(--text-muted);
            margin-bottom: 18px;
            line-height: 1.7;
        }

        .case-metrics-tag {
            display: flex;
            gap: 16px;
            font-size: 0.85rem;
            color: var(--neon-teal);
            font-weight: 600;
        }

        /* 板块 10: 细分适用人群与场景 */
        .audience-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .audience-card {
            padding: 28px 22px;
            text-align: center;
        }

        .audience-badge {
            width: 60px;
            height: 60px;
            margin: 0 auto 18px;
            border-radius: 50%;
            background: rgba(56, 189, 248, 0.1);
            border: 1px solid var(--glass-border);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--neon-teal);
        }

        .audience-card h3 {
            font-size: 1.15rem;
            color: var(--text-title);
            margin-bottom: 12px;
        }

        .audience-card p {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* 板块 11: 客户口碑反馈 */
        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .review-card {
            padding: 30px;
        }

        .review-header {
            display: flex;
            align-items: center;
            gap: 16px;
            margin-bottom: 18px;
        }

        .review-avatar {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            object-fit: cover;
            border: 2px solid var(--brand-accent);
        }

        .review-user-name {
            font-size: 1rem;
            color: var(--text-title);
            font-weight: 600;
        }

        .review-user-title {
            font-size: 0.82rem;
            color: var(--text-muted);
        }

        .review-text {
            font-size: 0.92rem;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* 板块 12: 媒体合作与生态伙伴 */
        .partner-bar {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 20px;
            padding: 30px 40px;
        }

        .partner-logo-item {
            font-size: 1.1rem;
            font-weight: 700;
            color: rgba(255, 255, 255, 0.45);
            letter-spacing: 1px;
            transition: var(--transition);
        }

        .partner-logo-item:hover {
            color: var(--neon-teal);
        }

        /* 板块 13: 常见问题手风琴 */
        .faq-accordion {
            max-width: 860px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .faq-item {
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-sm);
            background: rgba(15, 23, 42, 0.6);
            overflow: hidden;
        }

        .faq-question {
            padding: 20px 24px;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-title);
        }

        .faq-answer {
            padding: 0 24px 20px;
            color: var(--text-muted);
            font-size: 0.92rem;
            line-height: 1.7;
        }

        /* 板块 14: 底部转化冲刺与表单 */
        .cta-box {
            padding: 56px 48px;
            background: radial-gradient(circle at 50% 50%, rgba(0, 102, 255, 0.25) 0%, rgba(11, 21, 40, 0.9) 100%);
            border: 1px solid var(--glass-border-hover);
            border-radius: var(--radius-lg);
            text-align: center;
        }

        .cta-box h2 {
            font-size: 2.2rem;
            color: var(--text-title);
            margin-bottom: 14px;
        }

        .cta-box p {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 680px;
            margin: 0 auto 36px;
        }

        .cta-form {
            display: flex;
            justify-content: center;
            gap: 16px;
            max-width: 680px;
            margin: 0 auto;
            flex-wrap: wrap;
        }

        .cta-input {
            flex: 1;
            min-width: 200px;
            padding: 14px 20px;
            background: rgba(6, 11, 25, 0.7);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-sm);
            color: #ffffff;
            font-size: 0.95rem;
            outline: none;
            transition: var(--transition);
        }

        .cta-input:focus {
            border-color: var(--neon-teal);
            box-shadow: 0 0 12px rgba(0, 245, 212, 0.3);
        }

        /* 页脚 */
        .site-footer {
            background: #030712;
            border-top: 1px solid var(--glass-border);
            padding: 64px 0 32px;
            font-size: 0.9rem;
            color: var(--text-muted);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 40px;
            margin-bottom: 48px;
        }

        .footer-col h4 {
            font-size: 1.05rem;
            color: var(--text-title);
            margin-bottom: 18px;
        }

        .footer-links {
            list-style: none;
        }

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

        .footer-links a:hover {
            color: var(--neon-teal);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 28px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.82rem;
            flex-wrap: wrap;
            gap: 12px;
        }

        /* 响应式样式适配 */
        @media (max-width: 1024px) {
            .content-split-grid {
                grid-template-columns: 1fr;
            }
            .about-layout {
                grid-template-columns: 1fr;
            }
            .advantage-grid,
            .product-grid,
            .pain-points-grid,
            .reviews-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .process-steps,
            .audience-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .section {
                padding: 60px 0;
            }
            .header-topbar {
                display: none;
            }
            .nav-menu {
                display: none; /* 移动端精简化 */
            }
            .hero-profile-card {
                flex-direction: column;
                align-items: flex-start;
                gap: 20px;
                padding: 24px;
            }
            .hero-profile-main {
                flex-direction: column;
                align-items: flex-start;
            }
            .stream-card {
                flex-direction: column;
            }
            .stream-thumb {
                width: 100%;
                height: 180px;
            }
            .advantage-grid,
            .product-grid,
            .pain-points-grid,
            .reviews-grid,
            .cases-grid,
            .process-steps,
            .audience-grid {
                grid-template-columns: 1fr;
            }
            .prod-card.featured {
                transform: none;
            }
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
            .cta-form {
                flex-direction: column;
            }
            .cta-input,
            .cta-form .btn {
                width: 100%;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }