/* roulang page: index */
:root {
            --primary: #FF5500;
            --primary-dark: #E04B00;
            --accent: #00D1B2;
            --dark: #11161B;
            --deep: #0B0F14;
            --surface: #F8FAFC;
            --border: #E2E8F0;
        }
        html {
            scroll-behavior: smooth;
            font-family: system-ui, -apple-system, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
        }
        .hero-bg {
            background: linear-gradient(135deg, rgba(11, 15, 20, 0.92) 0%, rgba(17, 22, 27, 0.85) 100%), url('/assets/images/20108baeb5bcdf91.png') center/cover no-repeat;
        }
        .vision-bg {
            background: radial-gradient(circle at 80% 20%, rgba(0, 209, 178, 0.12) 0%, rgba(11, 15, 20, 1) 70%), url('/assets/images/783251d6c22a60d0.jpg') center/cover no-repeat;
        }
        .card-hover {
            transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
        }
        .card-hover:hover {
            transform: translateY(-4px);
            box-shadow: 0 16px 32px -8px rgba(17, 22, 27, 0.12);
        }
        .badge-glow {
            box-shadow: 0 0 15px rgba(255, 85, 0, 0.35);
        }
        /* FAQ手风琴样式 */
        details summary::-webkit-details-marker {
            display: none;
        }
        details[open] summary svg {
            transform: rotate(180deg);
        }