/* roulang page: index */
:root {
      --bg-deep: #0A0E17;
      --bg-card: #1A1F2E;
      --bg-nav: rgba(10, 14, 23, 0.85);
      --accent-green: #00F0A8;
      --accent-green-hover: #00C896;
      --accent-red: #FF4655;
      --accent-red-hover: #FF6B78;
      --border-dim: #2A2F3E;
      --text-primary: #E0E2E8;
      --text-secondary: #8A8F9D;
      --radius-card: 16px;
      --radius-btn: 8px;
      --radius-badge: 20px;
      --shadow-glow: 0 0 20px rgba(0,240,168,0.15);
      --font-mono: 'JetBrains Mono', 'SF Mono', 'Cascadia Code', monospace;
      --font-sans: 'Inter', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
    }

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

    body {
      background: radial-gradient(circle at 30% 10%, #141824 0%, #0A0E17 90%);
      font-family: var(--font-sans);
      color: var(--text-primary);
      line-height: 1.7;
      min-height: 100vh;
      -webkit-font-smoothing: antialiased;
      position: relative;
    }

    /* 隐藏网格纹理层 */
    body::before {
      content: "";
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background-image: 
        linear-gradient(rgba(42, 47, 62, 0.2) 1px, transparent 1px),
        linear-gradient(90deg, rgba(42, 47, 62, 0.2) 1px, transparent 1px);
      background-size: 40px 40px;
      pointer-events: none;
      z-index: 0;
    }

    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 24px;
      position: relative;
      z-index: 2;
    }

    /* 导航 */
    .header {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      z-index: 100;
      background: var(--bg-nav);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid transparent;
      transition: background 0.3s, border-color 0.3s;
    }
    .header.scrolled {
      background: rgba(10, 14, 23, 0.95);
      border-bottom: 1px solid var(--border-dim);
    }

    .nav {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 70px;
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 24px;
    }

    .logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 1.5rem;
      font-weight: 700;
      color: var(--accent-green);
      text-decoration: none;
      letter-spacing: 1px;
      white-space: nowrap;
    }
    .logo-icon {
      font-size: 1.8rem;
      filter: drop-shadow(0 0 6px var(--accent-green));
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 32px;
    }
    .nav-links a {
      color: var(--text-secondary);
      text-decoration: none;
      font-weight: 500;
      font-size: 0.95rem;
      transition: color 0.2s;
      white-space: nowrap;
    }
    .nav-links a:hover {
      color: var(--accent-green);
    }
    .btn-nav {
      background: var(--accent-green);
      color: #0A0E17 !important;
      padding: 10px 22px;
      border-radius: var(--radius-btn);
      font-weight: 600;
      transition: all 0.2s;
      border: none;
      cursor: pointer;
    }
    .btn-nav:hover {
      background: var(--accent-green-hover);
      box-shadow: 0 0 16px rgba(0,240,168,0.4);
    }

    .hamburger {
      display: none;
      flex-direction: column;
      gap: 5px;
      background: transparent;
      border: none;
      cursor: pointer;
    }
    .hamburger span {
      width: 25px;
      height: 2px;
      background: var(--accent-green);
      border-radius: 2px;
      transition: 0.3s;
    }

    /* 移动端菜单 */
    .mobile-menu {
      display: none;
      position: fixed;
      top: 70px;
      left: 0;
      width: 100%;
      background: rgba(10, 14, 23, 0.98);
      backdrop-filter: blur(20px);
      padding: 24px;
      flex-direction: column;
      gap: 24px;
      border-bottom: 1px solid var(--border-dim);
      z-index: 99;
    }
    .mobile-menu a {
      display: block;
      color: var(--text-primary);
      font-size: 1.2rem;
      padding: 10px 0;
      border-bottom: 1px solid var(--border-dim);
      text-decoration: none;
    }

    /* hero */
    .hero {
      padding: 150px 0 80px;
      display: flex;
      align-items: center;
      gap: 40px;
      position: relative;
    }
    .hero-left {
      flex: 1;
    }
    .hero-right {
      flex: 1;
      display: flex;
      justify-content: center;
    }
    h1 {
      font-size: 48px;
      font-weight: 800;
      line-height: 1.2;
      margin-bottom: 20px;
      background: linear-gradient(to right, #fff, var(--accent-green));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-sub {
      font-size: 1.2rem;
      color: var(--text-secondary);
      margin-bottom: 32px;
    }
    .btn-group {
      display: flex;
      gap: 16px;
      flex-wrap: wrap;
    }
    .btn-primary {
      background: var(--accent-green);
      color: #0A0E17;
      padding: 14px 32px;
      border-radius: var(--radius-btn);
      font-weight: 700;
      border: none;
      cursor: pointer;
      transition: 0.2s;
      font-size: 1rem;
    }
    .btn-primary:hover {
      background: var(--accent-green-hover);
      box-shadow: 0 0 20px var(--accent-green);
    }
    .btn-outline {
      background: transparent;
      border: 1px solid var(--accent-green);
      color: var(--accent-green);
      padding: 14px 32px;
      border-radius: var(--radius-btn);
      font-weight: 600;
      cursor: pointer;
      transition: 0.2s;
    }
    .btn-outline:hover {
      background: rgba(0,240,168,0.1);
    }

    .score-card {
      background: var(--bg-card);
      border: 1px solid var(--border-dim);
      border-radius: var(--radius-card);
      padding: 32px;
      width: 100%;
      max-width: 360px;
      box-shadow: var(--shadow-glow);
    }
    .match-teams {
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-weight: 700;
      font-size: 1.3rem;
    }
    .score-number {
      font-family: var(--font-mono);
      font-size: 2.8rem;
      color: var(--accent-green);
      text-shadow: 0 0 12px var(--accent-green);
    }
    .badge-row {
      display: flex;
      gap: 12px;
      margin-top: 30px;
    }
    .badge {
      background: #2A2F3E;
      padding: 8px 18px;
      border-radius: 20px;
      font-size: 0.85rem;
      color: var(--accent-green);
    }

    section {
      padding: 80px 0;
    }
    h2 {
      font-size: 36px;
      font-weight: 700;
      margin-bottom: 20px;
    }
    .section-desc {
      color: var(--text-secondary);
      margin-bottom: 48px;
    }

    .grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .service-card {
      background: var(--bg-card);
      border: 1px solid var(--border-dim);
      border-radius: var(--radius-card);
      padding: 32px 24px;
      transition: 0.3s;
    }
    .service-card:hover {
      border-color: var(--accent-green);
      transform: translateY(-4px);
      box-shadow: 0 0 24px rgba(0,240,168,0.2);
    }
    .icon-green {
      font-size: 2rem;
      color: var(--accent-green);
      margin-bottom: 16px;
    }
    .tag {
      display: inline-block;
      background: rgba(0,240,168,0.15);
      color: var(--accent-green);
      padding: 4px 12px;
      border-radius: 20px;
      font-size: 0.8rem;
      margin-top: 16px;
    }

    .stats-wall {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .stat-item {
      background: var(--bg-card);
      border-radius: 20px;
      padding: 28px 16px;
      text-align: center;
      border: 1px solid var(--border-dim);
    }
    .stat-number {
      font-family: var(--font-mono);
      font-size: 2.5rem;
      font-weight: 700;
    }
    .green-num { color: var(--accent-green); }
    .red-num { color: var(--accent-red); }

    .advantage-row {
      display: flex;
      align-items: center;
      gap: 48px;
      margin-bottom: 60px;
    }
    .adv-text {
      flex: 1;
    }
    .adv-img {
      flex: 1;
      background: var(--bg-card);
      border-radius: var(--radius-card);
      height: 260px;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    .games-scroll {
      display: flex;
      gap: 20px;
      overflow-x: auto;
      padding-bottom: 16px;
    }
    .game-card {
      min-width: 200px;
      background: var(--bg-card);
      border-radius: var(--radius-card);
      padding: 20px;
      border: 1px solid var(--border-dim);
    }

    .faq-item {
      background: var(--bg-card);
      border: 1px solid var(--border-dim);
      border-radius: 12px;
      margin-bottom: 16px;
      padding: 20px;
      cursor: pointer;
    }
    .faq-item.active {
      border-left: 4px solid var(--accent-green);
    }
    .faq-answer {
      color: var(--text-secondary);
      margin-top: 12px;
    }

    .cta-block {
      text-align: center;
      background: radial-gradient(circle at center, #1e2335, #0A0E17);
      border-radius: 32px;
      padding: 64px 24px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 32px;
      padding-bottom: 40px;
    }
    .footer a {
      color: var(--text-secondary);
      text-decoration: none;
    }
    .footer a:hover { color: var(--accent-green); }
    .copyright {
      border-top: 1px solid var(--border-dim);
      padding-top: 24px;
      text-align: center;
      color: var(--text-secondary);
    }

    @media (max-width: 1024px) {
      .grid-3 { grid-template-columns: repeat(2,1fr); }
      .stats-wall { grid-template-columns: repeat(2,1fr); }
    }
    @media (max-width: 768px) {
      .nav-links { display: none; }
      .hamburger { display: flex; }
      .hero { flex-direction: column; padding-top: 120px; }
      h1 { font-size: 36px; }
      .grid-3 { grid-template-columns: 1fr; }
      .advantage-row { flex-direction: column; }
      .footer-grid { grid-template-columns: 1fr 1fr; }
      .stats-wall { grid-template-columns: repeat(2,1fr); }
    }