/* roulang page: index */
:root {
      --primary-color: #1E293B;
      --accent-color: #D97706;
      --accent-hover: #B45309;
      --bg-light: #F8FAFC;
      --text-main: #0F172A;
      --text-muted: #475569;
      --border-color: #E2E8F0;
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
      text-rendering: optimizeLegibility;
      -webkit-font-smoothing: antialiased;
      background-color: #FFFFFF;
      color: var(--text-main);
      overflow-x: hidden;
    }
    .clip-slant {
      clip-path: polygon(0 0, 100% 0, 100% 88%, 0 100%);
    }
    @media (max-width: 768px) {
      .clip-slant {
        clip-path: polygon(0 0, 100% 0, 100% 95%, 0 100%);
      }
    }
    .gold-gradient-text {
      background: linear-gradient(135deg, #F59E0B 0%, #D97706 50%, #92400E 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .dark-card-blur {
      background: rgba(30, 41, 59, 0.7);
      backdrop-filter: blur(12px);
      border: 1px solid rgba(255, 255, 255, 0.1);
    }
    details summary::-webkit-details-marker {
      display: none;
    }
    details[open] summary .faq-arrow {
      transform: rotate(180deg);
    }
    html {
      scroll-behavior: smooth;
    }