/* roulang page: index */
:root {
            --primary: #0F52BA;
            --primary-dark: #0B3C8A;
            --accent: #00C49F;
            --text-main: #0F172A;
            --text-body: #334155;
            --text-muted: #64748B;
            --border-light: #E2E8F0;
            --radius-box: 12px;
            --shadow-soft: 0 10px 25px -5px rgba(15, 82, 186, 0.08), 0 8px 10px -6px rgba(15, 82, 186, 0.04);
            --shadow-hover: 0 20px 30px -10px rgba(15, 82, 186, 0.16), 0 10px 15px -5px rgba(15, 82, 186, 0.08);
        }
        
        body {
            font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
            color: var(--text-body);
            background-color: #FFFFFF;
            line-height: 1.75;
            overflow-x: hidden;
        }

        .hero-overlay {
            background: linear-gradient(135deg, rgba(11, 15, 25, 0.88) 0%, rgba(15, 82, 186, 0.75) 100%);
        }

        .card-custom {
            border: 1px solid var(--border-light);
            border-radius: var(--radius-box);
            box-shadow: var(--shadow-soft);
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .card-custom:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: #CBD5E1;
        }

        .accordion-content {
            transition: max-height 0.3s ease-out, opacity 0.3s ease-out;
            max-height: 0;
            overflow: hidden;
            opacity: 0;
        }

        .accordion-content.active {
            max-height: 280px;
            opacity: 1;
        }

        .sticky-cta-shadow {
            box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.08);
        }