/* roulang page: index */
:root {
            --primary: #0F4C81;
            --primary-dark: #0A3D62;
            --accent: #00A896;
            --accent-hover: #028071;
            --surface-light: #F8FAFC;
            --surface-muted: #F1F5F9;
            --text-main: #1E293B;
            --text-muted: #64748B;
            --border-soft: #E2E8F0;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            color: var(--text-main);
            background-color: #FFFFFF;
            line-height: 1.75;
        }
        .scroll-mt-header {
            scroll-margin-top: 90px;
        }
        .accordion-content {
            transition: max-height 0.35s ease-out, opacity 0.25s ease;
            max-height: 0;
            overflow: hidden;
            opacity: 0;
        }
        .accordion-content.open {
            max-height: 480px;
            opacity: 1;
        }
        .tab-panel {
            display: none;
        }
        .tab-panel.active {
            display: block;
        }
        .bento-card-glass {
            background: rgba(255, 255, 255, 0.94);
            backdrop-filter: blur(12px);
            border: 1px solid rgba(226, 232, 240, 0.9);
        }