/* roulang page: index */
:root {
            --primary: #1E40AF;
            --primary-hover: #1E3A8A;
            --accent: #0284C7;
            --text-main: #0F172A;
            --text-muted: #64748B;
            --bg-light: #F8FAFC;
        }
        html {
            scroll-behavior: smooth;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
        }
        body {
            color: #334155;
            background-color: #FFFFFF;
            overflow-x: hidden;
        }
        .text-midnight { color: #0F172A; }
        .hero-bg {
            background-image: linear-gradient(to right, rgba(15, 23, 42, 0.94), rgba(30, 64, 175, 0.85)), url('/assets/images/d88660f8b55f9783.webp');
            background-size: cover;
            background-position: center;
        }
        .card-hover {
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .card-hover:hover {
            transform: translateY(-4px);
            box-shadow: 0 16px 28px -8px rgba(15, 23, 42, 0.12);
        }
        .btn-focus:focus {
            outline: 2px solid #0284C7;
            outline-offset: 2px;
        }