/* roulang page: index */
:root {
            --primary-gradient: linear-gradient(135deg, #10B981 0%, #059669 100%);
            --dark-bg: #090D16;
            --card-bg: rgba(17, 24, 39, 0.75);
            --card-border: rgba(255, 255, 255, 0.08);
            --glow-green: 0 0 25px rgba(16, 185, 129, 0.25);
            --roulang-radius: 24px;
            --text-main: #F9FAFB;
            --text-muted: #9CA3AF;
        }

        body {
            background-color: var(--dark-bg);
            color: var(--text-main);
            font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Microsoft YaHei", sans-serif;
            overflow-x: hidden;
        }

        .roulang-card {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--roulang-radius);
            backdrop-filter: blur(12px);
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .roulang-card:hover {
            border-color: rgba(16, 185, 129, 0.3);
            box-shadow: var(--glow-green);
            transform: translateY(-2px);
        }

        .data-badge {
            font-size: 0.75rem;
            font-weight: 700;
            padding: 0.25rem 0.65rem;
            border-radius: 9999px;
            display: inline-flex;
            align-items: center;
            gap: 0.35rem;
            letter-spacing: 0.02em;
        }
        .data-badge-green {
            background: rgba(16, 185, 129, 0.15);
            color: #34D399;
            border: 1px solid rgba(16, 185, 129, 0.3);
        }
        .data-badge-orange {
            background: rgba(245, 158, 11, 0.15);
            color: #FBBF24;
            border: 1px solid rgba(245, 158, 11, 0.3);
        }

        .pulse-dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background-color: currentColor;
            animation: pulse-ring 2s cubic-bezier(0.455, 0.03, 0.515, 0.955) infinite;
        }

        @keyframes pulse-ring {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.4; transform: scale(1.3); }
        }

        .code-console-bg {
            background: #0D1322;
            border: 1px solid rgba(255, 255, 255, 0.1);
            font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
        }

        .roulang-wave-bg {
            background: radial-gradient(circle at 50% 0%, rgba(16, 185, 129, 0.12) 0%, rgba(9, 13, 22, 0) 70%);
        }

        .roulang-wave-divider {
            width: 100%;
            overflow: hidden;
            line-height: 0;
            transform: rotate(180deg);
        }
        .roulang-wave-divider svg {
            position: relative;
            display: block;
            width: calc(100% + 1.3px);
            height: 48px;
        }

        .scrollbar-none::-webkit-scrollbar {
            display: none;
        }
        .scrollbar-none {
            -ms-overflow-style: none;
            scrollbar-width: none;
        }