/* roulang page: index */
:root {
            --primary: #1e40af;
            --accent: #0ea5e9;
            --text-title: #0f172a;
            --text-body: #334155;
            --bg-light: #f8fafc;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            color: var(--text-body);
            background-color: #ffffff;
            overflow-x: hidden;
        }
        .custom-shadow {
            box-shadow: 0 4px 20px -2px rgba(15, 23, 42, 0.06);
        }
        .custom-hover-shadow:hover {
            box-shadow: 0 20px 25px -5px rgba(30, 64, 175, 0.12);
            transform: translateY(-4px);
        }
        .transition-base {
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }