/* roulang page: index */
:root {
            --bg-primary: #0F1014;
            --bg-card: #16181F;
            --bg-contrast: #08090B;
            --accent: #FF6B35;
            --gold: #E2C799;
            --text-light: #FFFFFF;
            --text-body: #D1D5DB;
            --text-dim: #8F96A3;
            --border-line: rgba(255, 255, 255, 0.08);
            --transition-smooth: all 250ms cubic-bezier(0.16, 1, 0.3, 1);
        }

        body {
            background-color: var(--bg-primary);
            color: var(--text-body);
            font-family: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            line-height: 1.75;
            letter-spacing: -0.01em;
            overflow-x: hidden;
        }

        .container-custom {
            max-width: 1280px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }

        .glass-panel {
            background: rgba(22, 24, 31, 0.75);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--border-line);
            box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05);
        }

        .hover-card {
            transition: var(--transition-smooth);
        }
        .hover-card:hover {
            transform: translateY(-4px);
            border-color: rgba(255, 107, 53, 0.4);
            box-shadow: 0 12px 24px -10px rgba(0, 0, 0, 0.7), 0 0 16px -2px rgba(255, 107, 53, 0.15);
        }

        .gradient-text-orange {
            background: linear-gradient(135deg, #FFFFFF 20%, #FF6B35 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .gradient-text-gold {
            background: linear-gradient(135deg, #FFFFFF 40%, #E2C799 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

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

        /* 手风琴开关动效 */
        .faq-content {
            max-height: 0;
            overflow: hidden;
            transition: max-height 350ms cubic-bezier(0, 1, 0, 1);
        }
        .faq-item.active .faq-content {
            max-height: 500px;
            transition: max-height 350ms ease-in-out;
        }
        .faq-item.active .faq-arrow {
            transform: rotate(180deg);
        }