/* roulang page: index */
:root {
      --primary: #10B981;
      --primary-hover: #059669;
      --accent: #F59E0B;
      --bg-dark: #0B0F19;
      --card-bg: #111827;
      --card-hover: #1F2937;
      --text-main: #F9FAFB;
      --text-muted: #9CA3AF;
      --border-color: rgba(255, 255, 255, 0.08);
    }
    body {
      background-color: var(--bg-dark);
      color: var(--text-main);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      overflow-x: hidden;
      scroll-behavior: smooth;
    }
    .hero-glow {
      background: radial-gradient(circle at 50% 30%, rgba(16, 185, 129, 0.15), transparent 70%);
    }
    .btn-glow {
      box-shadow: 0 0 25px rgba(16, 185, 129, 0.4);
      transition: all 0.3s ease;
    }
    .btn-glow:hover {
      box-shadow: 0 0 35px rgba(16, 185, 129, 0.65);
      transform: translateY(-2px);
    }
    .card-border-glow {
      border: 1px solid var(--border-color);
      transition: all 0.3s ease;
    }
    .card-border-glow:hover {
      border-color: rgba(16, 185, 129, 0.4);
      transform: translateY(-4px);
    }
    .details-arrow {
      transition: transform 0.3s ease;
    }
    details[open] .details-arrow {
      transform: rotate(180deg);
    }
    /* 倒计时环形装饰 */
    .countdown-circle {
      background: conic-gradient(#10B981 78%, #1F2937 0);
    }