/* roulang page: index */
:root {
            --primary: #1A56DB;
            --accent: #F97316;
            --dark: #0F172A;
            --text-main: #1E293B;
            --text-muted: #475569;
            --border-color: #E2E8F0;
        }
        html {
            scroll-behavior: smooth;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
        }
        .hero-bg {
            background: linear-gradient(rgba(15, 23, 42, 0.88), rgba(15, 23, 42, 0.92)), url('/assets/images/59a010493da372f3.webp') center/cover no-repeat;
        }
        .stats-bg {
            background: linear-gradient(rgba(15, 23, 42, 0.92), rgba(15, 23, 42, 0.96)), url('/assets/images/625874c7d2e26f24.webp') center/cover no-repeat;
        }
        .industrial-pattern {
            background-color: #f8fafc;
            background-image: radial-gradient(#cbd5e1 1px, transparent 1px);
            background-size: 24px 24px;
        }
        .card-hover {
            transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .card-hover:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 24px -6px rgba(15, 23, 42, 0.12);
        }