/* roulang page: index */
:root {
      --bg-main: #0c111d;
      --card-bg: rgba(22, 31, 48, 0.75);
      --border-color: rgba(255, 255, 255, 0.08);
      --neon-primary: #00f59b;
      --text-main: #f3f4f6;
      --text-muted: #9ca3af;
    }
    * { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; }
    body {
      background-color: var(--bg-main);
      color: var(--text-main);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      line-height: 1.75;
      overflow-x: hidden;
    }
    .glass-card {
      background: var(--card-bg);
      backdrop-filter: blur(14px);
      -webkit-backdrop-filter: blur(14px);
      border: 1px solid var(--border-color);
      border-radius: 1.25rem;
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .glass-card:hover {
      border-color: rgba(0, 245, 155, 0.3);
      transform: translateY(-4px);
      box-shadow: 0 12px 30px -10px rgba(0, 245, 155, 0.15);
    }
    .neon-badge {
      display: inline-flex;
      align-items: center;
      gap: 0.5rem;
      background: rgba(0, 245, 155, 0.1);
      border: 1px solid rgba(0, 245, 155, 0.3);
      color: var(--neon-primary);
      padding: 0.35rem 0.85rem;
      border-radius: 9999px;
      font-size: 0.875rem;
      font-weight: 500;
    }
    .section-spacing {
      padding-top: 5.5rem;
      padding-bottom: 5.5rem;
    }
    .glow-effect {
      box-shadow: 0 0 25px rgba(0, 245, 155, 0.35);
    }