/* roulang page: index */
:root {
            --primary: #1E3A34;
            --secondary: #2E564D;
            --accent: #C5A880;
            --text-main: #1A1D1C;
            --bg-light: #F8F9FA;
            --bg-soft: #F0F3F2;
            --border-ui: #E2E8F0;
        }
        * {
            box-sizing: border-box;
        }
        body {
            color: var(--text-main);
            background-color: #FFFFFF;
            font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
            line-height: 1.75;
            letter-spacing: 0.015em;
            overflow-x: hidden;
        }
        .header-glass {
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            background-color: rgba(30, 58, 52, 0.94);
        }
        .gold-glow {
            box-shadow: 0 4px 20px -2px rgba(197, 168, 128, 0.35);
        }
        .gold-border {
            border-color: rgba(197, 168, 128, 0.4);
        }
        .card-hover-trans {
            transition: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .card-hover-trans:hover {
            transform: translateY(-4px);
            box-shadow: 0 16px 28px -6px rgba(30, 58, 52, 0.12);
        }
        .faq-panel {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease-out;
        }
        .faq-panel.active {
            max-height: 280px;
        }