/* roulang page: index */
:root {
      --primary-blue: #0284c7;
      --tech-teal: #0f766e;
      --accent-orange: #f97316;
      --accent-orange-hover: #ea580c;
      --bg-light: #f8fafc;
      --bg-white: #ffffff;
      --bg-dark: #0f172a;
      --bg-dark-card: #1e293b;
      --text-main: #0f172a;
      --text-muted: #64748b;
      --text-light: #f1f5f9;
      --border-color: #e2e8f0;
      --border-dark: #334155;
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 24px;
      --shadow-sm: 0 1px 3px rgba(0,0,0,0.05);
      --shadow-md: 0 10px 25px -5px rgba(2,132,199,0.1), 0 8px 10px -6px rgba(0,0,0,0.05);
      --shadow-lg: 0 20px 30px -10px rgba(15,23,42,0.15);
      --transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    }

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

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

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

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

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

    .container {
      width: 100%;
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 24px;
    }

    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.92);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
      transition: var(--transition);
    }
    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 76px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 1.25rem;
      font-weight: 800;
      color: var(--tech-teal);
      letter-spacing: -0.5px;
    }
    .brand-logo-badge {
      background: linear-gradient(135deg, var(--primary-blue), var(--tech-teal));
      color: #fff;
      padding: 6px 10px;
      border-radius: var(--radius-sm);
      font-size: 0.85rem;
      font-weight: 700;
    }
    .nav-menu {
      display: flex;
      align-items: center;
      list-style: none;
      gap: 28px;
    }
    .nav-link {
      font-size: 0.95rem;
      font-weight: 500;
      color: var(--text-main);
      padding: 8px 4px;
      position: relative;
    }
    .nav-link:hover, .nav-link.active {
      color: var(--primary-blue);
    }
    .nav-link.active::after {
      content: "";
      position: absolute;
      bottom: 0;
      left: 0;
      width: 100%;
      height: 2px;
      background: var(--primary-blue);
      border-radius: 2px;
    }
    .nav-cta-btn {
      background: linear-gradient(135deg, var(--accent-orange), var(--accent-orange-hover));
      color: #ffffff !important;
      padding: 10px 22px;
      border-radius: var(--radius-md);
      font-weight: 600;
      font-size: 0.95rem;
      box-shadow: 0 4px 12px rgba(249, 115, 22, 0.25);
    }
    .nav-cta-btn:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 16px rgba(249, 115, 22, 0.35);
    }

    /* 通用组件 */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 48px;
      padding: 12px 28px;
      font-size: 1rem;
      font-weight: 600;
      border-radius: var(--radius-md);
      cursor: pointer;
      border: none;
      transition: var(--transition);
    }
    .btn-primary {
      background: linear-gradient(135deg, var(--accent-orange), var(--accent-orange-hover));
      color: #ffffff;
      box-shadow: 0 4px 14px rgba(249, 115, 22, 0.28);
    }
    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 8px 20px rgba(249, 115, 22, 0.38);
    }
    .btn-outline {
      background: transparent;
      border: 1px solid var(--border-color);
      color: var(--text-main);
    }
    .btn-outline:hover {
      border-color: var(--primary-blue);
      color: var(--primary-blue);
      background: rgba(2, 132, 199, 0.04);
    }
    .badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 4px 12px;
      border-radius: 9999px;
      font-size: 0.8rem;
      font-weight: 600;
      letter-spacing: 0.5px;
      text-transform: uppercase;
    }
    .badge-primary {
      background: rgba(2, 132, 199, 0.1);
      color: var(--primary-blue);
    }
    .badge-teal {
      background: rgba(15, 118, 110, 0.1);
      color: var(--tech-teal);
    }
    .section {
      padding: 88px 0;
    }
    .section-alt {
      background-color: var(--bg-white);
    }
    .section-dark {
      background: linear-gradient(180deg, #090e17 0%, var(--bg-dark) 100%);
      color: var(--text-light);
    }
    .section-dark .section-desc {
      color: #94a3b8;
    }
    .section-head {
      margin-bottom: 56px;
      max-width: 780px;
    }
    .section-head.center {
      text-align: center;
      margin-left: auto;
      margin-right: auto;
    }
    .section-tag {
      font-size: 0.85rem;
      font-weight: 700;
      color: var(--primary-blue);
      text-transform: uppercase;
      margin-bottom: 12px;
      display: inline-block;
    }
    .section-title {
      font-size: 2.2rem;
      font-weight: 800;
      letter-spacing: -0.5px;
      line-height: 1.3;
      margin-bottom: 16px;
    }
    .section-desc {
      font-size: 1.1rem;
      color: var(--text-muted);
      line-height: 1.8;
    }

    /* 1. Hero 板块：杂志分栏首屏 */
    .hero-section {
      padding: 70px 0 90px;
      background: linear-gradient(180deg, #f0f9ff 0%, var(--bg-light) 100%);
      border-bottom: 1px solid var(--border-color);
    }
    .hero-split {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 48px;
      align-items: center;
    }
    .hero-left h1 {
      font-size: 2.85rem;
      line-height: 1.25;
      font-weight: 900;
      color: var(--text-main);
      margin-bottom: 24px;
      letter-spacing: -1px;
    }
    .hero-left h1 span {
      background: linear-gradient(135deg, var(--primary-blue), var(--tech-teal));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-lead {
      font-size: 1.15rem;
      color: var(--text-muted);
      line-height: 1.8;
      margin-bottom: 36px;
    }
    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      margin-bottom: 36px;
    }
    .hero-indicators {
      display: flex;
      gap: 32px;
      border-top: 1px solid rgba(226, 232, 240, 0.8);
      padding-top: 24px;
    }
    .indicator-item h4 {
      font-size: 1.6rem;
      font-weight: 800;
      color: var(--tech-teal);
    }
    .indicator-item p {
      font-size: 0.85rem;
      color: var(--text-muted);
      font-weight: 500;
    }
    .hero-right-card {
      background: #ffffff;
      border-radius: var(--radius-lg);
      padding: 24px;
      box-shadow: var(--shadow-md);
      border: 1px solid var(--border-color);
      position: relative;
    }
    .hero-card-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 18px;
    }
    .live-pulse {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 0.85rem;
      font-weight: 600;
      color: #ef4444;
    }
    .live-dot {
      width: 10px;
      height: 10px;
      border-radius: 50%;
      background: #ef4444;
      animation: pulse 1.5s infinite;
    }
    @keyframes pulse {
      0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.7); }
      70% { transform: scale(1); box-shadow: 0 0 0 10px rgba(239, 68, 68, 0); }
      100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(239, 68, 68, 0); }
    }
    .hero-card-img {
      border-radius: var(--radius-md);
      overflow: hidden;
      margin-bottom: 18px;
      position: relative;
    }
    .hero-card-metrics {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 12px;
    }
    .sub-metric {
      background: var(--bg-light);
      padding: 12px;
      border-radius: var(--radius-sm);
    }
    .sub-metric span {
      font-size: 0.75rem;
      color: var(--text-muted);
      display: block;
    }
    .sub-metric strong {
      font-size: 1.05rem;
      color: var(--text-main);
    }

    /* 2. 片库/列表轨：全赛道转播项目横滑 */
    .stream-tracks {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .track-card {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 24px;
      transition: var(--transition);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .track-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-md);
      border-color: var(--primary-blue);
    }
    .track-icon {
      font-size: 2rem;
      margin-bottom: 16px;
    }
    .track-card h3 {
      font-size: 1.25rem;
      margin-bottom: 10px;
    }
    .track-card p {
      font-size: 0.9rem;
      color: var(--text-muted);
      margin-bottom: 18px;
      line-height: 1.6;
    }

    /* 3. 热播推荐：热点赛事会员并发管理示范 */
    .hot-spotlight {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      background: var(--bg-white);
      border-radius: var(--radius-lg);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }
    .spotlight-media {
      position: relative;
      min-height: 360px;
    }
    .spotlight-media img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .spotlight-content {
      padding: 44px;
      display: flex;
      flex-direction: column;
      justify-content: center;
    }
    .spotlight-content h3 {
      font-size: 1.8rem;
      margin: 12px 0 16px;
      line-height: 1.35;
    }
    .spotlight-content p {
      color: var(--text-muted);
      margin-bottom: 24px;
      line-height: 1.7;
    }
    .spotlight-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-bottom: 28px;
    }

    /* 4. 类型入口：赛事会员分级与方案 */
    .tier-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .tier-card {
      background: var(--bg-white);
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      padding: 36px 28px;
      position: relative;
      transition: var(--transition);
      display: flex;
      flex-direction: column;
    }
    .tier-card.featured {
      border-color: var(--primary-blue);
      box-shadow: var(--shadow-md);
      transform: scale(1.03);
    }
    .tier-card.featured::before {
      content: "推荐配置";
      position: absolute;
      top: -12px;
      left: 50%;
      transform: translateX(-50%);
      background: var(--primary-blue);
      color: #fff;
      font-size: 0.75rem;
      padding: 4px 14px;
      border-radius: 999px;
      font-weight: 600;
    }
    .tier-head {
      margin-bottom: 24px;
      border-bottom: 1px solid var(--border-color);
      padding-bottom: 20px;
    }
    .tier-title {
      font-size: 1.35rem;
      font-weight: 700;
      margin-bottom: 8px;
    }
    .tier-price {
      font-size: 2.2rem;
      font-weight: 800;
      color: var(--tech-teal);
    }
    .tier-price span {
      font-size: 0.95rem;
      color: var(--text-muted);
      font-weight: 400;
    }
    .tier-features {
      list-style: none;
      margin-bottom: 32px;
      flex-grow: 1;
    }
    .tier-features li {
      font-size: 0.92rem;
      color: var(--text-muted);
      margin-bottom: 12px;
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .tier-features li::before {
      content: "✓";
      color: var(--tech-teal);
      font-weight: 800;
    }

    /* 5. 片单分区：多赛道会员管理矩阵 */
    .category-cluster {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .category-box {
      background: var(--bg-white);
      border-radius: var(--radius-lg);
      padding: 28px;
      border: 1px solid var(--border-color);
      transition: var(--transition);
    }
    .category-box:hover {
      box-shadow: var(--shadow-sm);
      border-color: var(--primary-blue);
    }
    .category-box h4 {
      font-size: 1.25rem;
      margin-bottom: 12px;
      color: var(--text-main);
    }
    .category-box p {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 20px;
    }
    .meta-tags {
      display: flex;
      gap: 6px;
      flex-wrap: wrap;
    }

    /* 6. 痛点解析 (Pain Points) */
    .pain-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .pain-card {
      background: var(--bg-white);
      border-radius: var(--radius-lg);
      padding: 32px;
      border: 1px solid #fee2e2;
      box-shadow: var(--shadow-sm);
      position: relative;
    }
    .pain-card::after {
      content: "!";
      position: absolute;
      top: 24px;
      right: 24px;
      width: 28px;
      height: 28px;
      background: #fef2f2;
      color: #ef4444;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 0.9rem;
    }
    .pain-card h4 {
      font-size: 1.2rem;
      color: #b91c1c;
      margin-bottom: 14px;
    }
    .pain-card p {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 7. 核心解决方案 (Solution 架构图解) */
    .solution-block {
      background: var(--bg-white);
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      padding: 48px;
      box-shadow: var(--shadow-md);
    }
    .solution-flow {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
      margin-top: 36px;
    }
    .flow-step {
      background: var(--bg-light);
      padding: 24px;
      border-radius: var(--radius-md);
      position: relative;
      border: 1px solid var(--border-color);
    }
    .step-num {
      font-size: 0.8rem;
      font-weight: 800;
      color: var(--primary-blue);
      text-transform: uppercase;
      margin-bottom: 8px;
      display: block;
    }
    .flow-step h4 {
      font-size: 1.15rem;
      margin-bottom: 8px;
    }
    .flow-step p {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 8. 评分榜 / 性能指标看板 */
    .perf-matrix {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .perf-item {
      background: var(--bg-white);
      border-radius: var(--radius-lg);
      padding: 32px 24px;
      border: 1px solid var(--border-color);
      text-align: center;
      transition: var(--transition);
    }
    .perf-item:hover {
      transform: translateY(-4px);
      border-color: var(--tech-teal);
    }
    .perf-val {
      font-size: 2.6rem;
      font-weight: 900;
      color: var(--primary-blue);
      line-height: 1;
      margin-bottom: 12px;
      letter-spacing: -1px;
    }
    .perf-item h4 {
      font-size: 1.05rem;
      margin-bottom: 8px;
      color: var(--text-main);
    }
    .perf-item p {
      font-size: 0.85rem;
      color: var(--text-muted);
    }

    /* 9. 客户证言 / 用户故事 (Deep Dive) */
    .testimonial-wall {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .quote-card {
      background: var(--bg-dark-card);
      border-radius: var(--radius-lg);
      padding: 36px 30px;
      border: 1px solid var(--border-dark);
      position: relative;
    }
    .quote-icon {
      font-size: 2.2rem;
      color: var(--primary-blue);
      line-height: 1;
      margin-bottom: 16px;
    }
    .quote-text {
      font-size: 0.95rem;
      color: #cbd5e1;
      line-height: 1.7;
      margin-bottom: 24px;
    }
    .quote-author {
      display: flex;
      align-items: center;
      gap: 14px;
    }
    .author-info h5 {
      font-size: 0.95rem;
      color: #ffffff;
    }
    .author-info span {
      font-size: 0.8rem;
      color: #94a3b8;
    }

    /* 10. 适用场景矩阵 */
    .use-cases-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .case-card {
      background: var(--bg-white);
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      overflow: hidden;
      display: flex;
      flex-direction: column;
    }
    .case-img-wrap {
      height: 180px;
      position: relative;
    }
    .case-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .case-body {
      padding: 24px;
      flex-grow: 1;
    }
    .case-body h4 {
      font-size: 1.2rem;
      margin-bottom: 10px;
    }
    .case-body p {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.65;
    }

    /* 11. 行业资讯摘要 (News) */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .news-card {
      background: var(--bg-white);
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      padding: 28px;
      transition: var(--transition);
      display: flex;
      flex-direction: column;
    }
    .news-card:hover {
      box-shadow: var(--shadow-md);
      transform: translateY(-4px);
      border-color: var(--tech-teal);
    }
    .news-date {
      font-size: 0.8rem;
      color: var(--tech-teal);
      font-weight: 700;
      margin-bottom: 12px;
      display: inline-block;
    }
    .news-card h4 {
      font-size: 1.15rem;
      margin-bottom: 12px;
      line-height: 1.45;
    }
    .news-card p {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 20px;
      flex-grow: 1;
    }
    .read-more-link {
      font-size: 0.88rem;
      font-weight: 600;
      color: var(--primary-blue);
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    /* 12. 实施方法步骤 (Steps) */
    .step-timeline {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      counter-reset: timeline-counter;
    }
    .timeline-item {
      background: var(--bg-white);
      padding: 32px 24px;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      position: relative;
    }
    .timeline-item::before {
      counter-increment: timeline-counter;
      content: "0" counter(timeline-counter);
      font-size: 2.5rem;
      font-weight: 900;
      color: rgba(2, 132, 199, 0.12);
      position: absolute;
      top: 16px;
      right: 20px;
      line-height: 1;
    }
    .timeline-item h4 {
      font-size: 1.15rem;
      margin-bottom: 12px;
      position: relative;
      z-index: 2;
    }
    .timeline-item p {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.65;
      position: relative;
      z-index: 2;
    }

    /* 13. FAQ 常见问题手风琴 */
    .faq-list {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .faq-item {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: var(--transition);
    }
    .faq-question {
      padding: 22px 28px;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-weight: 700;
      font-size: 1.05rem;
      user-select: none;
    }
    .faq-question:hover {
      color: var(--primary-blue);
    }
    .faq-toggle-icon {
      font-size: 1.25rem;
      transition: transform 0.3s ease;
      color: var(--primary-blue);
    }
    .faq-answer {
      display: none;
      padding: 0 28px 24px;
      color: var(--text-muted);
      font-size: 0.95rem;
      line-height: 1.75;
      border-top: 1px solid #f1f5f9;
    }
    .faq-item.active {
      border-color: var(--primary-blue);
      box-shadow: var(--shadow-sm);
    }
    .faq-item.active .faq-answer {
      display: block;
      padding-top: 16px;
    }
    .faq-item.active .faq-toggle-icon {
      transform: rotate(45deg);
    }

    /* 14. 追剧入口与预约试用收口行动区 */
    .cta-conversion-box {
      background: linear-gradient(135deg, #075985 0%, #0f766e 100%);
      border-radius: var(--radius-lg);
      padding: 60px 48px;
      color: #ffffff;
      box-shadow: var(--shadow-lg);
    }
    .cta-split {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
    }
    .cta-info h3 {
      font-size: 2.2rem;
      line-height: 1.3;
      margin-bottom: 18px;
    }
    .cta-info p {
      font-size: 1.05rem;
      color: #e0f2fe;
      margin-bottom: 28px;
      line-height: 1.7;
    }
    .fast-form {
      background: #ffffff;
      padding: 32px;
      border-radius: var(--radius-md);
      color: var(--text-main);
      box-shadow: 0 10px 25px rgba(0,0,0,0.15);
    }
    .form-group {
      margin-bottom: 16px;
    }
    .form-label {
      display: block;
      font-size: 0.85rem;
      font-weight: 600;
      margin-bottom: 6px;
      color: var(--text-main);
    }
    .form-input {
      width: 100%;
      height: 44px;
      padding: 0 14px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      font-size: 0.92rem;
      outline: none;
      transition: var(--transition);
    }
    .form-input:focus {
      border-color: var(--primary-blue);
      box-shadow: 0 0 0 3px rgba(2, 132, 199, 0.15);
    }
    .form-submit-btn {
      width: 100%;
      height: 48px;
      background: linear-gradient(135deg, var(--accent-orange), var(--accent-orange-hover));
      color: #fff;
      font-weight: 700;
      font-size: 1rem;
      border: none;
      border-radius: var(--radius-sm);
      cursor: pointer;
      transition: var(--transition);
      margin-top: 8px;
    }
    .form-submit-btn:hover {
      box-shadow: 0 6px 16px rgba(249, 115, 22, 0.4);
      transform: translateY(-1px);
    }

    /* 页脚 */
    .site-footer {
      background: #090e17;
      color: #94a3b8;
      padding: 64px 0 32px;
      border-top: 1px solid var(--border-dark);
      font-size: 0.9rem;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.8fr 1fr 1fr 1.2fr;
      gap: 40px;
      margin-bottom: 48px;
    }
    .footer-brand h4 {
      color: #ffffff;
      font-size: 1.2rem;
      margin-bottom: 16px;
    }
    .footer-brand p {
      line-height: 1.7;
      margin-bottom: 16px;
      font-size: 0.88rem;
    }
    .footer-col h5 {
      color: #ffffff;
      font-size: 0.95rem;
      margin-bottom: 18px;
      font-weight: 700;
    }
    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .footer-links a:hover {
      color: var(--primary-blue);
    }
    .footer-bottom {
      border-top: 1px solid rgba(255,255,255,0.08);
      padding-top: 28px;
      display: flex;
      flex-wrap: wrap;
      justify-content: space-between;
      align-items: center;
      font-size: 0.82rem;
    }

    /* 移动端菜单按钮与响应式 */
    .menu-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 1.5rem;
      color: var(--text-main);
      cursor: pointer;
      padding: 6px;
    }

    @media (max-width: 1024px) {
      .hero-split {
        grid-template-columns: 1fr;
        gap: 40px;
      }
      .stream-tracks, .tier-grid, .category-cluster, .pain-grid, .testimonial-wall, .use-cases-grid, .news-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .solution-flow, .perf-matrix, .step-timeline {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      .menu-toggle {
        display: block;
      }
      .nav-menu {
        position: absolute;
        top: 76px;
        left: 0;
        right: 0;
        background: #ffffff;
        flex-direction: column;
        padding: 24px;
        box-shadow: var(--shadow-lg);
        display: none;
        border-bottom: 1px solid var(--border-color);
        gap: 16px;
      }
      .nav-menu.open {
        display: flex;
      }
      .hot-spotlight, .cta-split {
        grid-template-columns: 1fr;
      }
      .hero-left h1 {
        font-size: 2.1rem;
      }
      .section-title {
        font-size: 1.75rem;
      }
      .stream-tracks, .tier-grid, .category-cluster, .pain-grid, .testimonial-wall, .use-cases-grid, .news-grid, .solution-flow, .perf-matrix, .step-timeline {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
    }