/* roulang page: index */
:root {
            --primary: #1E5BF6;
            --primary-dark: #0B4FD9;
            --accent: #FF6B35;
            --emerald: #00C288;
            --bg-light: #F8FAFC;
            --bg-subtle: #EEF4FF;
            --text-main: #0F172A;
            --text-muted: #334155;
            --text-sub: #64748B;
            --border-color: #E2E8F0;
            --radius-card: 16px;
            --radius-btn: 10px;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background-color: #FFFFFF;
            color: var(--text-main);
            overflow-x: hidden;
        }

        .hero-overlay {
            background: linear-gradient(135deg, rgba(11, 19, 43, 0.88) 0%, rgba(15, 23, 42, 0.78) 50%, rgba(30, 91, 246, 0.7) 100%);
        }

        .cta-gradient {
            background: linear-gradient(135deg, #1E5BF6 0%, #0B4FD9 55%, #083BB0 100%);
        }

        .accent-gradient {
            background: linear-gradient(135deg, #FF6B35 0%, #FF8A50 100%);
        }

        .custom-card-shadow {
            box-shadow: 0 4px 20px -2px rgba(15, 23, 42, 0.05);
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .custom-card-shadow:hover {
            transform: translateY(-4px);
            box-shadow: 0 20px 30px -4px rgba(30, 91, 246, 0.12);
        }

        /* 动画过渡与交互优化 */
        .faq-content {
            transition: max-height 0.35s ease-out, opacity 0.3s ease;
        }

        /* 隐藏滚动条 */
        .no-scrollbar::-webkit-scrollbar {
            display: none;
        }
        .no-scrollbar {
            -ms-overflow-style: none;
            scrollbar-width: none;
        }