/* roulang page: index */
:root {
            --primary: #1E3A8A;
            --primary-dark: #0F2E6E;
            --secondary: #0284C7;
            --accent: #F59E0B;
            --bg-light: #F8FAFC;
            --text-main: #0F172A;
            --text-sub: #334155;
            --text-muted: #64748B;
            --border-light: #E2E8F0;
            --radius-main: 12px;
            --shadow-subtle: 0 4px 20px -2px rgba(15, 23, 42, 0.05);
            --shadow-hover: 0 20px 25px -5px rgba(30, 58, 138, 0.1), 0 8px 10px -6px rgba(30, 58, 138, 0.1);
        }

        body {
            color: var(--text-main);
            background-color: #FFFFFF;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

        .card-custom {
            background: #FFFFFF;
            border: 1px solid rgba(226, 232, 240, 0.8);
            border-radius: var(--radius-main);
            box-shadow: var(--shadow-subtle);
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .card-custom:hover {
            transform: translateY(-4px);
            border-color: rgba(2, 132, 199, 0.3);
            box-shadow: var(--shadow-hover);
        }

        .hero-diagonal-skew {
            clip-path: polygon(0 0, 100% 0, 100% 92%, 0 100%);
        }

        .badge-pill {
            display: inline-flex;
            align-items: center;
            padding: 0.35rem 0.85rem;
            border-radius: 9999px;
            font-size: 0.8125rem;
            font-weight: 600;
        }

        .btn-primary {
            background-color: var(--primary);
            color: #FFFFFF;
            transition: all 0.2s ease-in-out;
            box-shadow: 0 4px 14px 0 rgba(30, 58, 138, 0.25);
        }
        .btn-primary:hover {
            background-color: var(--primary-dark);
            transform: translateY(-1px);
            box-shadow: 0 6px 20px 0 rgba(30, 58, 138, 0.35);
        }

        .btn-accent {
            background-color: var(--accent);
            color: #FFFFFF;
            transition: all 0.2s ease-in-out;
            box-shadow: 0 4px 14px 0 rgba(245, 158, 11, 0.3);
        }
        .btn-accent:hover {
            background-color: var(--accent-dark);
            transform: translateY(-1px);
            box-shadow: 0 6px 20px 0 rgba(245, 158, 11, 0.4);
        }

        /* 手风琴平滑旋转效果 */
        .faq-item input:checked ~ .faq-content {
            max-height: 500px;
            opacity: 1;
            padding-top: 1rem;
        }
        .faq-item input:checked ~ label .faq-icon {
            transform: rotate(180deg);
        }