/* roulang page: index */
:root {
      --bg-dark: #070D18;
      --bg-navy: #0B1528;
      --primary: #0EA5E9;
      --accent: #38BDF8;
      --gold: #F59E0B;
      --text-main: #F8FAFC;
      --text-muted: #94A3B8;
      --border-line: rgba(56, 189, 248, 0.15);
    }
    body {
      background-color: var(--bg-dark);
      color: var(--text-main);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", "PingFang SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
      overflow-x: hidden;
    }
    .glass-card {
      background: rgba(16, 28, 54, 0.68);
      backdrop-filter: blur(14px);
      -webkit-backdrop-filter: blur(14px);
      border: 1px solid var(--border-line);
      box-shadow: 0 8px 30px rgba(0, 0, 0, 0.35);
    }
    .glass-card-hover {
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .glass-card-hover:hover {
      border-color: rgba(56, 189, 248, 0.45);
      transform: translateY(-3px);
      box-shadow: 0 14px 34px rgba(14, 165, 233, 0.18);
    }
    .btn-glow {
      background: linear-gradient(135deg, #0EA5E9 0%, #0284C7 100%);
      transition: all 0.25s ease;
      box-shadow: 0 2px 10px rgba(14, 165, 233, 0.3);
    }
    .btn-glow:hover {
      box-shadow: 0 0 22px rgba(56, 189, 248, 0.6);
      transform: translateY(-1px);
    }
    .btn-glow:active {
      transform: translateY(1px);
    }
    .neon-text {
      background: linear-gradient(135deg, #FFFFFF 30%, #38BDF8 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .gold-neon-text {
      background: linear-gradient(135deg, #FDE68A 20%, #F59E0B 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    input:focus, select:focus, textarea:focus {
      outline: none;
      border-color: #38BDF8 !important;
      box-shadow: 0 0 15px rgba(56, 189, 248, 0.35) !important;
    }