/* roulang page: index */
:root {
      --brand-primary: #FF5500;
      --brand-accent: #10B981;
      --brand-dark: #0F172A;
      --brand-light: #F8FAFC;
    }
    html {
      scroll-behavior: smooth;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    }
    .hero-mask {
      background: linear-gradient(135deg, rgba(15, 23, 42, 0.94) 0%, rgba(15, 23, 42, 0.82) 100%);
    }
    .badge-live {
      box-shadow: 0 0 10px rgba(16, 185, 129, 0.6);
    }
    .btn-glow {
      box-shadow: 0 6px 20px rgba(255, 85, 0, 0.35);
    }
    .btn-glow:hover {
      box-shadow: 0 8px 25px rgba(255, 85, 0, 0.5);
    }
    .accordion-content {
      transition: max-height 0.3s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.3s ease;
    }