/* roulang page: index */
:root {
            --primary: #1E3A5F;
            --accent: #C5A880;
            --accent-hover: #b3956e;
            --dark-bg: #0F172A;
            --light-bg: #F8FAFC;
            --text-main: #0F172A;
            --text-body: #334155;
            --text-muted: #64748B;
        }
        body {
            font-family: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            color: var(--text-body);
            background-color: var(--light-bg);
            line-height: 1.75;
            scroll-behavior: smooth;
        }
        .text-primary-navy { color: var(--primary); }
        .bg-primary-navy { background-color: var(--primary); }
        .text-champagne { color: var(--accent); }
        .bg-champagne { background-color: var(--accent); }
        .border-champagne { border-color: var(--accent); }
        .btn-gold {
            background-color: var(--accent);
            color: #0F172A;
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .btn-gold:hover {
            background-color: var(--accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 10px 15px -3px rgba(197, 168, 128, 0.3);
        }
        .card-custom {
            transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
        }
        .card-custom:hover {
            transform: translateY(-5px);
            border-color: rgba(197, 168, 128, 0.5);
            box-shadow: 0 12px 24px -6px rgba(30, 58, 95, 0.12);
        }
        .accordion-content {
            transition: max-height 0.3s ease-out, opacity 0.3s ease-out;
            max-height: 0;
            opacity: 0;
            overflow: hidden;
        }
        .accordion-content.active {
            max-height: 200px;
            opacity: 1;
        }