/* roulang page: index */
:root {
      --primary: #0F172A;
      --secondary: #10B981;
      --accent-gold: #D97706;
      --bg-base: #FFFFFF;
      --bg-alt: #F8FAFC;
      --dark-surface: #090D14;
      --text-main: #0F172A;
      --text-muted: #475569;
      --border-light: #E2E8F0;
      --border-dark: rgba(255, 255, 255, 0.08);
      --font-mono: "JetBrains Mono", "Roboto Mono", monospace;
    }

    body {
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      color: var(--text-main);
      background-color: var(--bg-base);
      line-height: 1.75;
      letter-spacing: -0.01em;
    }

    .font-mono-num {
      font-family: var(--font-mono);
    }

    .card-border-edge {
      border: 1px solid var(--border-light);
      border-radius: 4px;
      transition: all 200ms ease-out;
    }

    .card-border-edge:hover {
      border-color: #CBD5E1;
      transform: translateY(-2px);
      box-shadow: 0 8px 24px -4px rgba(15, 23, 42, 0.05);
    }

    .dark-card-edge {
      border: 1px solid var(--border-dark);
      background-color: #0E131F;
      border-radius: 4px;
      transition: all 200ms ease-out;
    }

    .dark-card-edge:hover {
      border-color: rgba(255, 255, 255, 0.2);
      transform: translateY(-2px);
    }

    .hero-gold-glow {
      background: radial-gradient(circle at 50% 30%, rgba(217, 119, 6, 0.12) 0%, rgba(9, 13, 20, 0.98) 75%), #090D14;
    }