/* roulang page: index */
:root {
            --brand-primary: #FF5500;
            --brand-secondary: #FF385C;
            --brand-accent: #00DC82;
            --bg-light: #F8FAFC;
            --text-main: #0F172A;
            --text-muted: #64748B;
            --card-border: #E2E8F0;
        }

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

        .brand-gradient {
            background: linear-gradient(135deg, #FF5500 0%, #FF385C 100%);
        }

        .brand-gradient-text {
            background: linear-gradient(135deg, #FF5500 0%, #FF385C 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .brand-btn-shadow {
            box-shadow: 0 10px 25px -5px rgba(255, 85, 0, 0.35);
        }

        .pulse-dot {
            animation: pulse-dot 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
        }

        @keyframes pulse-dot {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.4; transform: scale(0.85); }
        }

        .card-hover-effect {
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .card-hover-effect:hover {
            transform: translateY(-5px);
            box-shadow: 0 20px 30px -10px rgba(15, 23, 42, 0.08);
            border-color: rgba(255, 85, 0, 0.3);
        }

        /* 隐藏原生手风琴箭头 */
        details summary::-webkit-details-marker {
            display: none;
        }