/* roulang page: index */
:root {
            --primary: #059669;
            --primary-hover: #047857;
            --accent: #f97316;
            --dark-bg: #0b1120;
            --card-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.04), 0 8px 10px -6px rgba(0, 0, 0, 0.04);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        html {
            scroll-behavior: smooth;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
        }
        .custom-shadow {
            box-shadow: var(--card-shadow);
        }
        .hover-card {
            transition: var(--transition);
        }
        .hover-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 20px 25px -5px rgba(5, 150, 105, 0.1), 0 10px 10px -5px rgba(5, 150, 105, 0.04);
        }
        /* 手风琴原生交互美化 */
        details summary::-webkit-details-marker {
            display:none;
        }
        details[open] summary .rotate-icon {
            transform: rotate(180deg);
        }