/* roulang page: index */
:root {
      --bg-dark: #07090e;
      --bg-card: #131826;
      --accent-purple: #7928CA;
      --accent-cyan: #00DFD8;
      --accent-gold: #D4AF37;
      --text-main: #F8FAFC;
      --text-muted: #94A3B8;
      --border-subtle: #1f273d;
    }
    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;
      overflow-x: hidden;
    }
    .neon-border-cyan:hover {
      border-color: rgba(0, 223, 216, 0.4);
      box-shadow: 0 0 25px rgba(0, 223, 216, 0.15);
    }
    .neon-border-purple:hover {
      border-color: rgba(121, 40, 202, 0.4);
      box-shadow: 0 0 25px rgba(121, 40, 202, 0.15);
    }
    .text-gradient {
      background: linear-gradient(135deg, #00DFD8 0%, #7928CA 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .text-gold-gradient {
      background: linear-gradient(135deg, #FFE79A 0%, #D4AF37 50%, #9B7811 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .gold-box {
      border: 1px solid rgba(212, 175, 55, 0.3);
      background: radial-gradient(circle at top right, rgba(212, 175, 55, 0.08), transparent 70%), #121622;
    }
    details summary::-webkit-details-marker { display: none; }