/* roulang page: index */
:root {
      --bg-base: #07111E;
      --bg-surface: #0D1D2F;
      --bg-card: #13273E;
      --primary: #00F5D4;
      --accent: #FF5E3A;
      --text-main: #F1F5F9;
      --text-muted: #94A3B8;
      --border-glow: rgba(0, 245, 212, 0.16);
    }
    body {
      background-color: var(--bg-base);
      color: var(--text-main);
      font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      overflow-x: hidden;
    }
    .glow-border {
      border: 1px solid var(--border-glow);
      box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
      transition: all 0.3s ease;
    }
    .glow-border:hover {
      border-color: rgba(0, 245, 212, 0.45);
      transform: translateY(-4px);
      box-shadow: 0 14px 35px -8px rgba(0, 245, 212, 0.2);
    }
    .clip-slant {
      clip-path: polygon(0 0, 100% 0, 100% 90%, 0 100%);
    }
    @media (max-width: 768px) {
      .clip-slant {
        clip-path: polygon(0 0, 100% 0, 100% 95%, 0 100%);
      }
    }
    .hero-mask {
      background: linear-gradient(135deg, rgba(7, 17, 30, 0.94) 15%, rgba(13, 29, 47, 0.82) 65%, rgba(0, 245, 212, 0.18) 100%);
    }