/* roulang page: index */
:root {
      --bg-dark: #0B0F19;
      --bg-card: #111827;
      --bg-surface: #161E2E;
      --border-color: #232E42;
      --accent-cyan: #00F2FE;
      --accent-blue: #4FACFE;
      --text-main: #F8FAFC;
      --text-muted: #94A3B8;
    }
    body {
      background-color: var(--bg-dark);
      color: var(--text-main);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      overflow-x: hidden;
    }
    .custom-gradient-border {
      border: 1px solid var(--border-color);
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .custom-gradient-border:hover {
      border-color: rgba(0, 242, 254, 0.4);
      box-shadow: 0 10px 30px -10px rgba(0, 242, 254, 0.15);
    }
    .accent-gradient-text {
      background: linear-gradient(135deg, #00F2FE 0%, #4FACFE 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-mask {
      background: linear-gradient(180deg, rgba(11, 15, 25, 0.85) 0%, rgba(11, 15, 25, 0.98) 100%);
    }