/* roulang page: index */
:root {
      --primary-green: #00E575;
      --bg-dark: #080E1A;
      --bg-card: #0F172A;
      --accent-orange: #FF5A1F;
      --text-muted: #94A3B8;
      --border-subtle: rgba(255, 255, 255, 0.08);
    }
    html {
      scroll-behavior: smooth;
    }
    body {
      background-color: var(--bg-dark);
      color: #F8FAFC;
      font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    }
    .gradient-hero-overlay {
      background: linear-gradient(180deg, rgba(8, 14, 26, 0.82) 0%, rgba(8, 14, 26, 0.96) 80%, #080E1A 100%);
    }
    .text-balance-header {
      line-height: 1.35;
      word-break: break-word;
    }
    .coupon-edge {
      background: radial-gradient(circle at 0 50%, transparent 12px, #0D1627 13px),
                  radial-gradient(circle at 100% 50%, transparent 12px, #0D1627 13px);
    }
    .card-hover-fx {
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .card-hover-fx:hover {
      transform: translateY(-3px);
      box-shadow: 0 12px 30px -8px rgba(0, 229, 117, 0.15);
      border-color: rgba(0, 229, 117, 0.35);
    }