/* roulang page: index */
:root {
            --color-primary: #0F2C59;
            --color-dark: #0A1128;
            --color-accent: #C5A880;
            --color-bg: #F8F9FA;
            --color-text: #1F2937;
            --color-muted: #6B7280;
            --color-border: #E5E7EB;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background-color: var(--color-bg);
            color: var(--color-text);
            scroll-behavior: smooth;
        }
        .hero-bg {
            background-image: linear-gradient(180deg, rgba(10, 17, 40, 0.88) 0%, rgba(6, 11, 24, 0.96) 100%), url('/assets/images/33286faaaea30beb.png');
            background-size: cover;
            background-position: center;
        }
        .card-shadow {
            box-shadow: 0 4px 20px -2px rgba(15, 44, 89, 0.06);
            transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
        }
        .card-shadow:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 25px -4px rgba(15, 44, 89, 0.12);
            border-color: var(--color-accent);
        }