/* roulang page: index */
:root {
      --color-primary: #10B981;
      --color-primary-dark: #059669;
      --color-navy: #0F172A;
      --color-navy-card: #1E293B;
      --color-accent: #F59E0B;
      --color-bg-light: #F8FAFC;
      --color-text-main: #0F172A;
      --color-text-muted: #475569;
      --color-border: #E2E8F0;
    }
    html { scroll-behavior: smooth; }
    body { font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif; background-color: var(--color-bg-light); color: var(--color-text-main); overflow-x: hidden; }
    .hero-glow { background: radial-gradient(circle at 50% 30%, rgba(16, 185, 129, 0.18) 0%, rgba(15, 23, 42, 0.95) 75%); }
    .card-hover { transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1); }
    .card-hover:hover { transform: translateY(-4px); box-shadow: 0 12px 28px -6px rgba(16, 185, 129, 0.15), 0 8px 12px -6px rgba(15, 23, 42, 0.08); }
    .faq-answer { transition: max-height 0.35s ease, opacity 0.3s ease; }
    .gradient-border { position: relative; border-radius: 1rem; background: linear-gradient(135deg, rgba(16,185,129,0.4), rgba(245,158,11,0.2), rgba(255,255,255,0.05)); padding: 1px; }