/* roulang page: index */
:root {
      --bg-main: #070b19;
      --bg-sec: #0f172a;
      --color-cyan: #06b6d4;
      --color-blue: #3b82f6;
      --text-main: #f8fafc;
      --text-muted: #94a3b8;
    }
    html {
      scroll-behavior: smooth;
    }
    body {
      background-color: var(--bg-main);
      color: var(--text-main);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      overflow-x: hidden;
    }
    .glass-card {
      background: rgba(19, 31, 56, 0.7);
      backdrop-filter: blur(14px);
      -webkit-backdrop-filter: blur(14px);
      border: 1px solid rgba(255, 255, 255, 0.08);
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .glass-card:hover {
      border-color: rgba(6, 182, 212, 0.4);
      box-shadow: 0 12px 36px 0 rgba(0, 0, 0, 0.45);
      transform: translateY(-3px);
    }
    .glow-btn {
      background: linear-gradient(135deg, #06b6d4 0%, #3b82f6 100%);
      box-shadow: 0 0 20px rgba(6, 182, 212, 0.4);
      transition: all 0.3s ease;
    }
    .glow-btn:hover {
      box-shadow: 0 0 30px rgba(59, 130, 246, 0.65);
      transform: translateY(-1px) scale(1.02);
    }
    .glow-border {
      border: 1px solid rgba(6, 182, 212, 0.3);
    }
    .campaign-banner {
      background: linear-gradient(90deg, rgba(245, 158, 11, 0.15) 0%, rgba(6, 182, 212, 0.15) 100%);
      border-bottom: 1px solid rgba(245, 158, 11, 0.3);
    }
    .diagonal-clip {
      clip-path: polygon(0 0, 100% 0, 95% 100%, 0% 100%);
    }
    @media (max-width: 768px) {
      .diagonal-clip {
        clip-path: none;
      }
    }