/* roulang page: index */
:root {
            --bg-base: #0B0E14;
            --bg-card: #121721;
            --primary: #00F59B;
            --primary-glow: rgba(0, 245, 155, 0.18);
            --border-subtle: rgba(255, 255, 255, 0.08);
            --border-active: rgba(0, 245, 155, 0.45);
        }
        
        body {
            background-color: var(--bg-base);
            color: #F8FAFC;
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
            overflow-x: hidden;
            letter-spacing: -0.01em;
        }

        .tabular-nums {
            font-variant-numeric: tabular-nums;
        }

        .glass-nav {
            background: rgba(11, 14, 20, 0.85);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
        }

        .glow-border {
            border: 1px solid var(--border-subtle);
            transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
        }

        .glow-border:hover {
            border-color: var(--border-active);
            box-shadow: 0 0 24px var(--primary-glow);
            transform: translateY(-3px);
        }

        .no-scrollbar::-webkit-scrollbar {
            display: none;
        }
        .no-scrollbar {
            -ms-overflow-style: none;
            scrollbar-width: none;
        }

        .pill-item.active {
            background-color: #00F59B;
            color: #0B0E14;
            font-weight: 600;
            box-shadow: 0 0 16px rgba(0, 245, 155, 0.4);
        }

        .mask-radial {
            mask-image: radial-gradient(circle at center, black 40%, transparent 95%);
            -webkit-mask-image: radial-gradient(circle at center, black 40%, transparent 95%);
        }
        
        .hero-gradient-overlay {
            background: linear-gradient(180deg, rgba(11, 14, 20, 0.4) 0%, rgba(11, 14, 20, 0.95) 85%, #0B0E14 100%);
        }

        .accordion-content {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s cubic-bezier(0.16, 1, 0.3, 1);
        }

        .accordion-item.open .accordion-content {
            max-height: 280px;
        }

        .accordion-item.open .chevron-icon {
            transform: rotate(180deg);
            color: #00F59B;
        }

        /* 统一可点击热区标准 */
        button, a {
            min-height: 40px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
        }