/* roulang page: index */
:root {
            --primary: #0F2B3C;
            --primary-dark: #0A1E2B;
            --accent: #0D9488;
            --accent-hover: #0F766E;
            --gold: #C5A880;
            --bg-light: #F8FAFC;
            --bg-dark: #0F172A;
            --text-main: #0F172A;
            --text-body: #334155;
            --text-muted: #64748B;
            --border-color: #E2E8F0;
            --shadow-subtle: 0 4px 20px -2px rgba(15, 23, 42, 0.05);
            --shadow-card: 0 10px 25px -3px rgba(15, 23, 42, 0.08);
        }

        html {
            scroll-behavior: smooth;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
        }

        body {
            background-color: var(--bg-light);
            color: var(--text-body);
            line-height: 1.75;
            overflow-x: hidden;
        }

        .container-custom {
            max-width: 1240px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }

        .hero-bg {
            background: linear-gradient(135deg, rgba(15, 43, 60, 0.94) 0%, rgba(10, 30, 43, 0.96) 100%), url('/assets/images/b4bf491bfac58086.webp') center/cover no-repeat;
        }

        .dark-section-bg {
            background: linear-gradient(180deg, #0F172A 0%, #151F32 100%), url('/assets/images/e466301ce0a41f16.webp') center/cover fixed;
        }

        .badge-gold {
            background: rgba(197, 168, 128, 0.12);
            color: #9A7B4F;
            border: 1px solid rgba(197, 168, 128, 0.35);
        }

        .badge-teal {
            background: rgba(13, 148, 136, 0.1);
            color: #0D9488;
            border: 1px solid rgba(13, 148, 136, 0.25);
        }

        .card-custom {
            background: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            box-shadow: var(--shadow-subtle);
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        .accordion-item {
            transition: all 0.3s ease;
        }

        .accordion-item[open] summary .faq-icon {
            transform: rotate(180deg);
        }