/* roulang page: index */
:root {
      --primary: #00D084;
      --primary-dark: #00A86B;
      --accent: #FF6B00;
      --bg-dark: #0D1117;
      --card-dark: #161B22;
      --border-dark: #30363D;
      --text-main: #E6EDF3;
      --text-muted: #8B949E;
      --bg-light: #F8FAFC;
      --text-light-main: #1F2937;
      --text-light-muted: #4B5563;
      --radius-sm: 8px;
      --radius-md: 12px;
      --radius-lg: 16px;
      --shadow: 0 8px 24px rgba(0, 208, 132, 0.08);
      --transition: all 0.25s ease;
    }
    
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
      scroll-behavior: smooth;
    }

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

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

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

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

    /* 顶部双行导航 */
    .top-bar {
      height: 36px;
      background-color: #080B0E;
      border-bottom: 1px solid var(--border-dark);
      font-size: 13px;
      color: var(--text-muted);
      display: flex;
      align-items: center;
    }
    .top-bar-inner {
      display: flex;
      justify-content: space-between;
      width: 100%;
      align-items: center;
    }
    .top-bar-left span {
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .pulse-dot {
      width: 8px;
      height: 8px;
      background-color: var(--primary);
      border-radius: 50%;
      box-shadow: 0 0 8px var(--primary);
    }
    .top-bar-right {
      display: flex;
      gap: 20px;
    }

    .main-header {
      position: sticky;
      top: 0;
      z-index: 999;
      height: 70px;
      background: rgba(13, 17, 23, 0.88);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
      display: flex;
      align-items: center;
    }
    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      width: 100%;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 20px;
      font-weight: 700;
      color: #FFF;
      letter-spacing: 0.05em;
    }
    .brand-logo svg {
      width: 30px;
      height: 30px;
      fill: var(--primary);
    }
    .nav-menu {
      display: flex;
      align-items: center;
      gap: 24px;
      list-style: none;
    }
    .nav-menu a {
      font-size: 15px;
      font-weight: 500;
      color: var(--text-main);
    }
    .nav-menu a:hover {
      color: var(--primary);
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      font-size: 15px;
      font-weight: 600;
      border-radius: var(--radius-sm);
      cursor: pointer;
      transition: var(--transition);
      border: 1px solid transparent;
    }
    .btn-primary {
      background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
      color: #0D1117;
      box-shadow: 0 4px 14px rgba(0, 208, 132, 0.25);
    }
    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(0, 208, 132, 0.4);
      filter: brightness(1.1);
    }
    .btn-accent {
      background: var(--accent);
      color: #FFF;
    }
    .btn-accent:hover {
      background: #E05E00;
      transform: translateY(-2px);
    }
    .btn-outline {
      background: transparent;
      border-color: var(--border-dark);
      color: var(--text-main);
    }
    .btn-outline:hover {
      border-color: var(--primary);
      color: var(--primary);
    }

    /* 通用板块与排版 */
    section {
      padding: 80px 0;
      position: relative;
    }
    .section-header {
      text-align: center;
      margin-bottom: 50px;
      max-width: 820px;
      margin-left: auto;
      margin-right: auto;
    }
    .section-tag {
      display: inline-block;
      font-size: 13px;
      font-weight: 600;
      text-transform: uppercase;
      color: var(--primary);
      background: rgba(0, 208, 132, 0.1);
      padding: 4px 12px;
      border-radius: 20px;
      margin-bottom: 12px;
    }
    .section-title {
      font-size: 32px;
      font-weight: 700;
      color: #FFF;
      margin-bottom: 16px;
      line-height: 1.35;
    }
    .section-desc {
      font-size: 16px;
      color: var(--text-muted);
      line-height: 1.7;
    }
    .light-section {
      background-color: var(--bg-light);
      color: var(--text-light-main);
    }
    .light-section .section-title {
      color: var(--text-light-main);
    }
    .light-section .section-desc {
      color: var(--text-light-muted);
    }

    /* 板块 1: 首屏高能大图 Hero */
    .hero-section {
      padding: 90px 0 100px;
      background: radial-gradient(circle at 80% 20%, rgba(0, 208, 132, 0.15) 0%, rgba(13, 17, 23, 0) 60%),
                  linear-gradient(rgba(13, 17, 23, 0.7), rgba(13, 17, 23, 0.95)),
                  url('/assets/images/93a255decc805488.jpg') center/cover no-repeat;
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 40px;
      align-items: center;
    }
    .hero-content h1 {
      font-size: 42px;
      font-weight: 800;
      line-height: 1.25;
      margin-bottom: 20px;
      color: #FFFFFF;
    }
    .hero-content h1 span {
      background: linear-gradient(120deg, #00D084, #4EFA94);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-p {
      font-size: 16px;
      color: var(--text-muted);
      margin-bottom: 30px;
      line-height: 1.8;
    }
    .hero-actions {
      display: flex;
      gap: 16px;
      flex-wrap: wrap;
    }
    /* 右侧模拟数据面板 */
    .faux-dashboard {
      background: var(--card-dark);
      border: 1px solid var(--border-dark);
      border-radius: var(--radius-lg);
      padding: 24px;
      box-shadow: 0 20px 40px rgba(0,0,0,0.6);
      position: relative;
    }
    .dashboard-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      border-bottom: 1px solid var(--border-dark);
      padding-bottom: 16px;
      margin-bottom: 20px;
    }
    .dashboard-title {
      font-size: 15px;
      font-weight: 600;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .dashboard-title::before {
      content: "";
      width: 10px;
      height: 10px;
      background: var(--accent);
      border-radius: 50%;
    }
    .dashboard-tag {
      background: rgba(255, 107, 0, 0.15);
      color: var(--accent);
      font-size: 12px;
      padding: 3px 8px;
      border-radius: 4px;
      font-weight: bold;
    }
    .match-item {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 12px 14px;
      background: #0D1117;
      border-radius: var(--radius-sm);
      margin-bottom: 12px;
      border: 1px solid rgba(255, 255, 255, 0.05);
    }
    .match-team {
      font-size: 14px;
      font-weight: 600;
      color: #FFF;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .match-score {
      font-size: 16px;
      font-weight: 700;
      color: var(--primary);
    }
    .match-status {
      font-size: 12px;
      color: var(--text-muted);
    }

    /* 板块 2: 品牌与底层协议 */
    .about-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 50px;
      align-items: center;
    }
    .about-image {
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow);
      border: 1px solid var(--border-dark);
    }
    .about-spec-list {
      margin-top: 24px;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
    }
    .spec-box {
      background: var(--card-dark);
      padding: 16px;
      border-radius: var(--radius-sm);
      border: 1px solid var(--border-dark);
    }
    .spec-value {
      font-size: 22px;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 4px;
    }
    .spec-label {
      font-size: 13px;
      color: var(--text-muted);
    }

    /* 板块 3: 核心优势六宫格 */
    .features-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .feature-card {
      background: var(--card-dark);
      border: 1px solid var(--border-dark);
      border-radius: var(--radius-md);
      padding: 30px;
      transition: var(--transition);
      position: relative;
    }
    .feature-card:hover {
      transform: translateY(-5px);
      border-color: var(--primary);
      box-shadow: var(--shadow);
    }
    .feature-icon-badge {
      width: 48px;
      height: 48px;
      border-radius: var(--radius-sm);
      background: rgba(0, 208, 132, 0.12);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 22px;
      margin-bottom: 20px;
    }
    .feature-title {
      font-size: 18px;
      font-weight: 700;
      color: #FFF;
      margin-bottom: 10px;
    }
    .feature-desc {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.65;
    }

    /* 板块 4: 热门赛事流与终端矩阵 */
    .products-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }
    .product-card {
      background: var(--card-dark);
      border: 1px solid var(--border-dark);
      border-radius: var(--radius-lg);
      padding: 30px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .product-badge {
      align-self: flex-start;
      font-size: 12px;
      color: var(--accent);
      background: rgba(255, 107, 0, 0.1);
      padding: 4px 10px;
      border-radius: 4px;
      margin-bottom: 16px;
    }
    .product-name {
      font-size: 22px;
      font-weight: 700;
      color: #FFF;
      margin-bottom: 12px;
    }
    .product-list {
      list-style: none;
      margin: 20px 0;
      color: var(--text-muted);
      font-size: 14px;
    }
    .product-list li {
      margin-bottom: 10px;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .product-list li::before {
      content: "✓";
      color: var(--primary);
      font-weight: bold;
    }

    /* 板块 5: 技术壁垒与理念 */
    .tech-bg {
      background: radial-gradient(ellipse at center, #16241C 0%, #0D1117 70%);
      border-top: 1px solid var(--border-dark);
      border-bottom: 1px solid var(--border-dark);
    }
    .tech-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }
    .tech-node {
      background: rgba(22, 27, 34, 0.7);
      backdrop-filter: blur(10px);
      padding: 30px;
      border-radius: var(--radius-md);
      border: 1px solid rgba(255, 255, 255, 0.08);
    }
    .tech-node-num {
      font-size: 32px;
      font-weight: 800;
      color: var(--primary);
      opacity: 0.8;
      margin-bottom: 10px;
    }
    .tech-node h3 {
      font-size: 18px;
      color: #FFF;
      margin-bottom: 12px;
    }
    .tech-node p {
      font-size: 14px;
      color: var(--text-muted);
    }

    /* 板块 6: 多场景应用与演示 */
    .scenarios-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
    }
    .scenario-tabs {
      display: flex;
      flex-direction: column;
      gap: 14px;
    }
    .scenario-tab-item {
      padding: 18px 22px;
      background: var(--card-dark);
      border: 1px solid var(--border-dark);
      border-radius: var(--radius-md);
      cursor: pointer;
      transition: var(--transition);
    }
    .scenario-tab-item.active {
      border-color: var(--primary);
      background: rgba(0, 208, 132, 0.05);
    }
    .scenario-tab-title {
      font-size: 16px;
      font-weight: 700;
      color: #FFF;
      margin-bottom: 6px;
    }
    .scenario-tab-desc {
      font-size: 13px;
      color: var(--text-muted);
    }
    .scenario-view-box {
      border-radius: var(--radius-lg);
      overflow: hidden;
      border: 1px solid var(--border-dark);
      position: relative;
    }

    /* 板块 7: 关键指标与数据条 */
    .stats-bar-section {
      background: #11161D;
      border-top: 1px solid var(--border-dark);
      border-bottom: 1px solid var(--border-dark);
      padding: 60px 0;
    }
    .stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      text-align: center;
    }
    .stat-metric {
      font-size: 40px;
      font-weight: 800;
      color: var(--primary);
      font-family: monospace, sans-serif;
      margin-bottom: 8px;
    }
    .stat-label {
      font-size: 14px;
      color: var(--text-muted);
    }

    /* 板块 8: 解说员与专业用户故事 */
    .stories-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 30px;
    }
    .story-card {
      background: var(--card-dark);
      border: 1px solid var(--border-dark);
      border-radius: var(--radius-md);
      padding: 30px;
      position: relative;
    }
    .story-quote {
      font-size: 15px;
      line-height: 1.7;
      color: var(--text-main);
      margin-bottom: 24px;
      font-style: italic;
    }
    .story-author {
      display: flex;
      align-items: center;
      gap: 16px;
    }
    .author-img {
      width: 50px;
      height: 50px;
      border-radius: 50%;
      object-fit: cover;
      border: 2px solid var(--primary);
    }
    .author-name {
      font-size: 16px;
      font-weight: 700;
      color: #FFF;
    }
    .author-role {
      font-size: 13px;
      color: var(--text-muted);
    }

    /* 板块 9: 球迷社群评价瀑布流 */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .review-card {
      background: var(--card-dark);
      border: 1px solid var(--border-dark);
      border-radius: var(--radius-md);
      padding: 24px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .review-text {
      font-size: 14px;
      color: var(--text-main);
      margin-bottom: 16px;
      line-height: 1.6;
    }
    .review-stars {
      color: #FFB800;
      margin-bottom: 10px;
      font-size: 13px;
    }
    .review-user-info {
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 12px;
      color: var(--text-muted);
      border-top: 1px solid rgba(255, 255, 255, 0.05);
      padding-top: 10px;
    }

    /* 板块 10: 赛事资讯与前瞻 */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .news-card {
      background: var(--card-dark);
      border: 1px solid var(--border-dark);
      border-radius: var(--radius-md);
      overflow: hidden;
      display: flex;
      flex-direction: column;
    }
    .news-thumb {
      height: 140px;
      object-fit: cover;
      width: 100%;
    }
    .news-body {
      padding: 16px;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
      justify-content: space-between;
    }
    .news-cat {
      font-size: 11px;
      color: var(--primary);
      text-transform: uppercase;
      font-weight: 700;
      margin-bottom: 6px;
    }
    .news-title {
      font-size: 15px;
      font-weight: 700;
      color: #FFF;
      margin-bottom: 10px;
      line-height: 1.4;
    }
    .news-excerpt {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* 板块 11: 异议拆解 FAQ */
    .faq-container {
      max-width: 800px;
      margin: 0 auto;
    }
    .faq-item {
      background: var(--card-dark);
      border: 1px solid var(--border-dark);
      border-radius: var(--radius-sm);
      margin-bottom: 14px;
      overflow: hidden;
    }
    .faq-question {
      padding: 18px 24px;
      font-size: 16px;
      font-weight: 600;
      color: #FFF;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      user-select: none;
    }
    .faq-question::after {
      content: "+";
      font-size: 20px;
      color: var(--primary);
      transition: var(--transition);
    }
    .faq-item.active .faq-question::after {
      content: "−";
    }
    .faq-answer {
      padding: 0 24px 20px 24px;
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
      display: none;
    }
    .faq-item.active .faq-answer {
      display: block;
    }

    /* 板块 12: 安全观赛与服务保障 */
    .guarantee-bar {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .guarantee-box {
      background: #11161D;
      border: 1px solid var(--border-dark);
      padding: 24px;
      border-radius: var(--radius-md);
      text-align: center;
    }
    .guarantee-icon {
      font-size: 28px;
      color: var(--primary);
      margin-bottom: 12px;
    }
    .guarantee-box h4 {
      font-size: 16px;
      color: #FFF;
      margin-bottom: 6px;
    }
    .guarantee-box p {
      font-size: 13px;
      color: var(--text-muted);
    }

    /* 板块 13: 沉底行动召唤 CTA */
    .cta-banner {
      background: linear-gradient(135deg, rgba(0, 208, 132, 0.15) 0%, rgba(22, 27, 34, 0.9) 100%),
                  url('/assets/images/7506f8966f4ff8c2.jpg') center/cover no-repeat;
      border: 1px solid var(--primary);
      border-radius: var(--radius-lg);
      padding: 60px 40px;
      text-align: center;
      box-shadow: 0 10px 30px rgba(0, 208, 132, 0.1);
    }
    .cta-banner h2 {
      font-size: 34px;
      color: #FFF;
      margin-bottom: 18px;
      font-weight: 800;
    }
    .cta-banner p {
      font-size: 16px;
      color: var(--text-main);
      max-width: 680px;
      margin: 0 auto 30px;
    }
    .cta-actions {
      display: flex;
      justify-content: center;
      gap: 16px;
      flex-wrap: wrap;
    }

    /* 底部固定转化条 */
    .sticky-bottom-bar {
      position: fixed;
      bottom: 0;
      left: 0;
      width: 100%;
      height: 60px;
      background: rgba(13, 17, 23, 0.96);
      border-top: 1px solid var(--border-dark);
      backdrop-filter: blur(10px);
      z-index: 998;
      display: flex;
      align-items: center;
      box-shadow: 0 -4px 16px rgba(0,0,0,0.5);
    }
    .sticky-bar-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
      width: 100%;
    }
    .sticky-bar-left {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 14px;
      color: #FFF;
      font-weight: 500;
    }

    /* 页脚 */
    .main-footer {
      background: #080B0E;
      border-top: 1px solid var(--border-dark);
      padding: 60px 0 90px;
      font-size: 14px;
      color: var(--text-muted);
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr;
      gap: 40px;
      margin-bottom: 40px;
    }
    .footer-about p {
      margin-top: 14px;
      line-height: 1.7;
    }
    .footer-links h4 {
      color: #FFF;
      font-size: 15px;
      margin-bottom: 16px;
    }
    .footer-links ul {
      list-style: none;
    }
    .footer-links li {
      margin-bottom: 8px;
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      padding-top: 24px;
      display: flex;
      flex-direction: column;
      gap: 12px;
      text-align: center;
      font-size: 13px;
    }

    /* 响应式调整 */
    @media (max-width: 992px) {
      .hero-grid, .about-grid, .scenarios-grid, .stories-grid {
        grid-template-columns: 1fr;
      }
      .features-grid, .products-grid, .tech-grid, .reviews-grid, .news-grid {
        grid-template-columns: 1fr 1fr;
      }
      .stats-grid, .guarantee-bar {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      .top-bar { display: none; }
      .nav-menu { display: none; }
      .features-grid, .products-grid, .tech-grid, .reviews-grid, .news-grid {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .hero-content h1 {
        font-size: 30px;
      }
      .section-title {
        font-size: 24px;
      }
      .sticky-bar-left {
        font-size: 12px;
      }
    }