/* roulang page: index */
:root {
            --primary: #0F4C3A;
            --primary-dark: #0B1E17;
            --accent: #D97706;
            --bg-light: #F8FAFC;
            --text-title: #0F172A;
            --text-body: #334155;
            --text-muted: #64748B;
        }
        html {
            scroll-behavior: smooth;
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
        }
        body {
            color: var(--text-body);
            background-color: #FFFFFF;
        }
        .hero-pattern {
            background-color: #0B1E17;
            background-image: linear-gradient(135deg, rgba(11, 30, 23, 0.94) 0%, rgba(15, 76, 58, 0.90) 100%), url('/assets/images/1649fbcca051eeef.jpg');
            background-size: cover;
            background-position: center;
        }
        .cta-pattern {
            background-image: linear-gradient(135deg, rgba(11, 30, 23, 0.96) 0%, rgba(15, 76, 58, 0.94) 100%), url('/assets/images/132a6e67beb250ae.jpg');
            background-size: cover;
            background-position: center;
        }
        .tab-active {
            border-bottom: 2px solid var(--accent);
            color: var(--primary);
            font-weight: 600;
        }
        .faq-accordion[open] summary svg {
            transform: rotate(180deg);
        }