/* roulang page: index */
:root {
      --primary-color: #10B981;
      --neon-color: #00F5A0;
      --accent-color: #FF6B00;
      --bg-dark: #0B1117;
      --bg-surface: #131E29;
      --text-main: #0F172A;
      --text-muted: #475569;
    }
    body {
      font-family: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      line-height: 1.7;
      color: #0F172A;
      background-color: #F8FAFC;
      overflow-x: hidden;
    }
    .text-glow {
      text-shadow: 0 0 20px rgba(0, 245, 160, 0.4);
    }
    .border-subtle {
      border: 1px solid rgba(226, 232, 240, 0.9);
    }
    .border-dark-subtle {
      border: 1px solid rgba(255, 255, 255, 0.08);
    }
    .shadow-soft {
      box-shadow: 0 8px 30px -4px rgba(16, 24, 40, 0.06);
    }
    .shadow-glow {
      box-shadow: 0 4px 25px rgba(16, 185, 129, 0.25);
    }
    .transition-smooth {
      transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    }
    details summary::-webkit-details-marker {
      display: none;
    }