/* roulang page: index */
:root {
      --bg-dark: #0B0E14;
      --bg-surface: #141822;
      --bg-surface-elevated: #1B2130;
      --primary-cyan: #00F0FF;
      --accent-purple: #7928CA;
      --accent-gold: #FFB800;
      --text-main: #F8FAFC;
      --text-muted: #94A3B8;
      --text-sub: #64748B;
      --border-color: rgba(0, 240, 255, 0.14);
      --border-glow: rgba(0, 240, 255, 0.35);
      --radius-sm: 8px;
      --radius-md: 12px;
      --radius-lg: 20px;
      --transition-standard: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
    }

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

    body {
      background-color: var(--bg-dark);
      color: var(--text-main);
      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 {
      text-decoration: none;
      color: inherit;
      transition: var(--transition-standard);
    }

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

    /* 顶部超细状态条 */
    .top-status-bar {
      background-color: #07090D;
      border-bottom: 1px solid rgba(255, 255, 255, 0.06);
      font-size: 0.8rem;
      color: var(--text-muted);
      padding: 6px 0;
    }
    .status-pulse {
      display: inline-block;
      width: 7px;
      height: 7px;
      border-radius: 50%;
      background-color: #00FF88;
      box-shadow: 0 0 8px #00FF88;
      margin-right: 6px;
    }

    /* 主顶栏 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1030;
      background: rgba(11, 14, 20, 0.88);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border-bottom: 1px solid var(--border-color);
      padding: 14px 0;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 1.35rem;
      font-weight: 800;
      color: var(--text-main);
      letter-spacing: 0.5px;
    }
    .brand-icon {
      width: 36px;
      height: 36px;
      background: linear-gradient(135deg, var(--primary-cyan), var(--accent-purple));
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #050505;
      font-weight: 900;
      box-shadow: 0 0 16px rgba(0, 240, 255, 0.4);
    }
    .btn-action-glow {
      background: linear-gradient(135deg, var(--primary-cyan), #00A3FF);
      color: #050811 !important;
      font-weight: 700;
      padding: 8px 22px;
      border-radius: 30px;
      border: none;
      box-shadow: 0 4px 18px rgba(0, 240, 255, 0.35);
      transition: var(--transition-standard);
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .btn-action-glow:hover {
      background: linear-gradient(135deg, #4ef4ff, var(--primary-cyan));
      transform: translateY(-2px);
      box-shadow: 0 6px 24px rgba(0, 240, 255, 0.55);
    }

    /* 通用板块与排版 */
    section {
      padding: 85px 0;
      position: relative;
    }
    .section-alt {
      background-color: var(--bg-surface);
      border-top: 1px solid rgba(255, 255, 255, 0.04);
      border-bottom: 1px solid rgba(255, 255, 255, 0.04);
    }
    .badge-pill-tech {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 4px 14px;
      background: rgba(0, 240, 255, 0.08);
      border: 1px solid rgba(0, 240, 255, 0.25);
      border-radius: 20px;
      color: var(--primary-cyan);
      font-size: 0.8rem;
      font-weight: 600;
      margin-bottom: 14px;
    }
    .section-title {
      font-size: 2.2rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 14px;
      line-height: 1.35;
    }
    .section-desc {
      color: var(--text-muted);
      font-size: 1.05rem;
      max-width: 780px;
      margin: 0 auto 46px;
      line-height: 1.75;
    }

    /* 卡片底座规范 */
    .esports-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 30px 26px;
      height: 100%;
      transition: var(--transition-standard);
      position: relative;
      overflow: hidden;
    }
    .section-alt .esports-card {
      background: var(--bg-surface-elevated);
    }
    .esports-card:hover {
      border-color: var(--border-glow);
      box-shadow: 0 10px 32px rgba(0, 240, 255, 0.16);
      transform: translateY(-4px);
    }

    /* 板块 1: Hero */
    .hero-section {
      padding: 100px 0 90px;
      background: radial-gradient(circle at 80% 20%, rgba(121, 40, 202, 0.18), transparent 45%),
                  radial-gradient(circle at 10% 80%, rgba(0, 240, 255, 0.12), transparent 45%),
                  var(--bg-dark);
      border-bottom: 1px solid var(--border-color);
    }
    .hero-h1 {
      font-size: 3.1rem;
      font-weight: 900;
      line-height: 1.25;
      margin-bottom: 22px;
      color: #FFFFFF;
      letter-spacing: -0.5px;
    }
    .hero-h1 span {
      background: linear-gradient(120deg, #FFFFFF, var(--primary-cyan));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-text {
      color: var(--text-muted);
      font-size: 1.1rem;
      line-height: 1.8;
      margin-bottom: 34px;
    }
    .hero-stage-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 18px;
      position: relative;
      box-shadow: 0 20px 50px rgba(0, 0, 0, 0.6);
    }
    .hero-stage-card img {
      border-radius: var(--radius-md);
      width: 100%;
      height: 380px;
      object-fit: cover;
    }

    /* 板块 2: 指标看板 */
    .metric-value {
      font-size: 2.7rem;
      font-weight: 900;
      color: var(--primary-cyan);
      line-height: 1.1;
      margin-bottom: 8px;
      font-family: monospace;
    }

    /* 板块 6: 对比表格卡片 */
    .versus-table {
      width: 100%;
      border-collapse: separate;
      border-spacing: 0;
      background: var(--bg-surface);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
    }
    .versus-table th, .versus-table td {
      padding: 18px 24px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.05);
      text-align: left;
    }
    .versus-table th {
      background-color: var(--bg-surface-elevated);
      color: var(--text-main);
      font-weight: 700;
    }
    .versus-table td:last-child {
      color: var(--primary-cyan);
      font-weight: 600;
      background: rgba(0, 240, 255, 0.03);
    }

    /* 板块 7: 时间轴 */
    .timeline-item {
      border-left: 2px solid rgba(0, 240, 255, 0.3);
      padding-left: 28px;
      padding-bottom: 38px;
      position: relative;
    }
    .timeline-item:last-child {
      border-left-color: transparent;
      padding-bottom: 0;
    }
    .timeline-dot {
      position: absolute;
      left: -9px;
      top: 2px;
      width: 16px;
      height: 16px;
      border-radius: 50%;
      background: var(--primary-cyan);
      box-shadow: 0 0 10px var(--primary-cyan);
    }

    /* 板块 12: 手风琴 FAQ */
    .accordion-esports .accordion-item {
      background-color: var(--bg-surface);
      border: 1px solid var(--border-color);
      margin-bottom: 14px;
      border-radius: var(--radius-md) !important;
      overflow: hidden;
    }
    .accordion-esports .accordion-button {
      background-color: var(--bg-surface);
      color: var(--text-main);
      font-weight: 700;
      box-shadow: none;
      padding: 20px 24px;
      border: none;
    }
    .accordion-esports .accordion-button:not(.collapsed) {
      background-color: var(--bg-surface-elevated);
      color: var(--primary-cyan);
    }
    .accordion-esports .accordion-button::after {
      filter: invert(1);
    }
    .accordion-esports .accordion-body {
      color: var(--text-muted);
      line-height: 1.8;
      padding: 10px 24px 24px;
      background-color: var(--bg-surface-elevated);
    }

    /* 表单组件 */
    .form-control-esports {
      background-color: rgba(7, 9, 13, 0.8);
      border: 1px solid rgba(0, 240, 255, 0.2);
      color: #FFFFFF;
      border-radius: var(--radius-sm);
      padding: 12px 16px;
    }
    .form-control-esports:focus {
      background-color: #07090D;
      border-color: var(--primary-cyan);
      box-shadow: 0 0 12px rgba(0, 240, 255, 0.3);
      color: #FFFFFF;
      outline: none;
    }

    /* 页脚 */
    .site-footer {
      background-color: #07090D;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding: 70px 0 35px;
      color: var(--text-muted);
      font-size: 0.92rem;
    }
    .footer-title {
      color: var(--text-main);
      font-size: 1.05rem;
      font-weight: 700;
      margin-bottom: 20px;
    }
    .footer-links {
      list-style: none;
      padding: 0;
      margin: 0;
    }
    .footer-links li {
      margin-bottom: 10px;
    }
    .footer-links a:hover {
      color: var(--primary-cyan);
    }

    @media (max-width: 991px) {
      .hero-h1 {
        font-size: 2.3rem;
      }
      .section-title {
        font-size: 1.85rem;
      }
      .hero-stage-card img {
        height: 280px;
      }
    }