/* roulang page: index */
:root {
      --primary: #0F172A;
      --accent: #00D26A;
      --accent-blue: #0284C7;
      --bg-gray: #F8FAFC;
      --text-main: #0B0F19;
      --text-muted: #64748B;
      --border-color: #E2E8F0;
    }
    html {
      scroll-behavior: smooth;
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", system-ui, sans-serif;
    }
    .custom-shadow {
      box-shadow: 0 4px 20px -2px rgba(15, 23, 42, 0.06);
    }
    .hover-lift {
      transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
    }
    .hover-lift:hover {
      transform: translateY(-4px);
      box-shadow: 0 12px 28px -4px rgba(15, 23, 42, 0.1);
      border-color: #CBD5E1;
    }
    .details-custom summary::-webkit-details-marker {
      display: none;
    }
    .coupon-edge {
      background: radial-gradient(circle at left, transparent 10px, #ffffff 10px) left,
                  radial-gradient(circle at right, transparent 10px, #ffffff 10px) right;
      background-size: 51% 100%;
      background-repeat: no-repeat;
    }