/* roulang page: index */
:root {
            --brand-green: #10B981;
            --brand-green-dark: #059669;
            --accent-orange: #F97316;
            --text-heading: #0F172A;
            --text-body: #334155;
            --text-muted: #64748B;
            --bg-light: #F8FAFC;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            color: var(--text-body);
            background-color: #FFFFFF;
            overflow-x: hidden;
        }
        .hero-bg {
            background: linear-gradient(135deg, rgba(15, 23, 42, 0.92) 0%, rgba(6, 78, 59, 0.88) 100%), url('/assets/images/87cf167ed900ee71.webp') center/cover no-repeat;
        }
        .dark-section-bg {
            background-color: #0F172A;
        }
        .scroll-mt-header {
            scroll-margin-top: 80px;
        }
        .card-shadow {
            box-shadow: 0 4px 20px -2px rgba(16, 185, 129, 0.08), 0 2px 6px -1px rgba(0, 0, 0, 0.04);
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .card-shadow:hover {
            transform: translateY(-4px);
            box-shadow: 0 20px 25px -5px rgba(16, 185, 129, 0.15), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
        }
        details summary::-webkit-details-marker {
            display: none;
        }