/* roulang page: index */
:root {
            --primary: #1D4ED8;
            --primary-hover: #1E40AF;
            --navy-dark: #0F172A;
            --bg-light: #F8FAFC;
            --border-subtle: #E2E8F0;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background-color: var(--bg-light);
            color: #1E293B;
            overflow-x: hidden;
        }
        .text-balance {
            text-wrap: balance;
        }
        .hero-bg-overlay {
            background: linear-gradient(135deg, rgba(15, 23, 42, 0.94) 0%, rgba(30, 58, 138, 0.88) 100%);
        }
        .section-separator {
            position: relative;
        }
        .section-separator::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 80%;
            height: 1px;
            background: linear-gradient(90deg, transparent, #E2E8F0, transparent);
        }
        .glass-header {
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
        }