/* roulang page: index */
:root {
      --primary: #00FF88;
      --bg-dark: #0A0D0F;
      --card-bg: #12161A;
      --panel-bg: #181D22;
      --text-main: #FFFFFF;
      --text-muted: #8B949E;
      --text-body: #D0D7DE;
      --border-color: rgba(255, 255, 255, 0.08);
    }
    body {
      background-color: var(--bg-dark);
      color: var(--text-body);
      font-family: system-ui, -apple-system, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
      letter-spacing: 0.02em;
      line-height: 1.75;
      overflow-x: hidden;
    }
    .neon-glow {
      box-shadow: 0 0 25px rgba(0, 255, 136, 0.18);
    }
    .neon-border {
      border: 1px solid rgba(0, 255, 136, 0.4);
    }
    .neon-border:hover {
      border-color: #00FF88;
      box-shadow: 0 0 20px rgba(0, 255, 136, 0.25);
    }
    .card-transition {
      transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .card-transition:hover {
      transform: translateY(-3px);
      border-color: rgba(0, 255, 136, 0.6);
      box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5), 0 0 20px rgba(0, 255, 136, 0.12);
    }
    .tactical-grid {
      background-size: 40px 40px;
      background-image: 
        linear-gradient(to right, rgba(255, 255, 255, 0.03) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    }
    details summary::-webkit-details-marker {
      display: none;
    }