/* roulang page: index */
:root {
            --primary: #0E4A3F;
            --primary-dark: #061E1A;
            --accent: #10B981;
            --accent-hover: #059669;
            --ambergold: #D97706;
            --bg-base: #F8FAF9;
            --text-main: #111827;
            --text-muted: #4B5563;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
            background-color: var(--bg-base);
            color: var(--text-main);
            line-height: 1.8;
        }
        .hero-bg {
            background: linear-gradient(180deg, rgba(6, 30, 26, 0.88) 0%, rgba(14, 74, 63, 0.92) 100%), url('/assets/images/52a88ef0166add84.png') center/cover no-repeat;
        }
        .cta-bg {
            background: linear-gradient(135deg, #061E1A 0%, #0E4A3F 100%);
        }
        .card-shadow {
            box-shadow: 0 4px 20px -2px rgba(14, 74, 63, 0.06);
            transition: transform 0.25s ease, box-shadow 0.25s ease;
        }
        .card-shadow:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 28px -4px rgba(14, 74, 63, 0.12);
        }
        summary::-webkit-details-marker {
            display: none;
        }