/* roulang page: index */
:root {
      --bg-dark: #0D1117;
      --panel-dark: #161B22;
      --accent-green: #00F59B;
      --accent-green-dark: #10B981;
      --border-glow: rgba(0, 245, 155, 0.15);
    }
    body {
      background-color: var(--bg-dark);
      color: #E6EDF3;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      overflow-x: hidden;
    }
    .hero-clip {
      clip-path: polygon(0 0, 100% 0, 100% calc(100% - 4vw), 0 100%);
    }
    .glow-card {
      border: 1px solid rgba(255, 255, 255, 0.08);
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .glow-card:hover {
      border-color: rgba(0, 245, 155, 0.4);
      box-shadow: 0 0 25px rgba(0, 245, 155, 0.12);
      transform: translateY(-2px);
    }
    .radar-ping {
      position: relative;
    }
    .radar-ping::after {
      content: '';
      position: absolute;
      width: 100%;
      height: 100%;
      top: 0;
      left: 0;
      border-radius: 50%;
      background: rgba(0, 245, 155, 0.6);
      animation: ping 1.8s cubic-bezier(0, 0, 0.2, 1) infinite;
    }
    @keyframes ping {
      75%, 100% {
        transform: scale(2.4);
        opacity: 0;
      }
    }