/* roulang page: index */
:root {
            --color-primary: #0F52BA;
            --color-secondary: #00A8E8;
            --color-ice: #EBF3FA;
            --color-dark: #0B132B;
            --color-title: #0F172A;
            --color-text: #475569;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background-color: #F8FAFC;
            color: var(--color-text);
            overflow-x: hidden;
        }
        details summary::-webkit-details-marker {
            display: none;
        }
        details summary {
            list-style: none;
        }
        .custom-card {
            background-color: #FFFFFF;
            transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
            box-shadow: 0 4px 20px -2px rgba(15, 23, 42, 0.05);
        }
        .custom-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 20px 25px -5px rgba(15, 82, 186, 0.1);
        }
        .banner-mask {
            background: linear-gradient(135deg, rgba(15, 82, 186, 0.94) 0%, rgba(11, 19, 43, 0.92) 100%);
        }
        .dark-pattern {
            background-color: #0B132B;
            background-image: radial-gradient(rgba(0, 168, 232, 0.12) 1px, transparent 1px);
            background-size: 24px 24px;
        }