/* roulang page: index */
:root {
            --bs-body-bg: #0c1219;
            --bs-body-color: #9EB1C7;
            --primary-glow: #00D664;
            --primary-hover: #00b353;
            --accent-yellow: #E2FC52;
            --live-red: #FF5B37;
            --bg-deep: #0c1219;
            --bg-card: #131c26;
            --bg-card-hover: #172330;
            --border-subtle: rgba(255, 255, 255, 0.08);
            --border-highlight: rgba(0, 214, 100, 0.3);
            --text-title: #FFFFFF;
            --text-body: #9EB1C7;
            --text-muted: #5C708A;
            --font-family-base: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", "Noto Sans", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.25);
            --shadow-hover: 0 8px 30px rgba(0, 214, 100, 0.15);
            --shadow-glow: 0 0 12px rgba(0, 214, 100, 0.6);
        }

        /* Base Resets */
        body {
            background-color: var(--bg-deep);
            color: var(--text-body);
            font-family: var(--font-family-base);
            line-height: 1.6;
            overflow-x: hidden;
        }

        a {
            color: var(--primary-glow);
            text-decoration: none;
            transition: all 0.25s ease;
        }
        a:hover {
            color: var(--accent-yellow);
        }

        h1, h2, h3, h4, h5, h6 {
            color: var(--text-title);
            font-weight: 700;
        }

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

        /* Navbar Customization */
        .site-header {
            background-color: rgba(12, 18, 25, 0.9);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-subtle);
            position: sticky;
            top: 0;
            z-index: 1030;
        }

        .navbar-brand {
            font-size: 1.4rem;
            font-weight: 800;
            color: #ffffff !important;
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .navbar-brand .badge-ball {
            display: inline-flex;
            width: 32px;
            height: 32px;
            background: linear-gradient(135deg, var(--primary-glow), #057a3c);
            border-radius: 8px;
            align-items: center;
            justify-content: center;
            color: #000;
            font-size: 1rem;
        }

        .nav-link {
            color: var(--text-body) !important;
            font-weight: 500;
            padding: 0.5rem 1rem !important;
            transition: color 0.2s;
        }
        .nav-link:hover, .nav-link.active {
            color: var(--primary-glow) !important;
        }

        /* Container Limit */
        .container {
            max-width: 1240px;
        }

        /* Section Layouts */
        .page-section {
            padding: 90px 0;
            position: relative;
        }
        .page-section.bg-alt {
            background-color: var(--bg-card);
            border-top: 1px solid var(--border-subtle);
            border-bottom: 1px solid var(--border-subtle);
        }

        .section-header {
            margin-bottom: 48px;
        }
        .section-header h2 {
            font-size: 2.1rem;
            margin-bottom: 12px;
            position: relative;
            display: inline-block;
        }
        .section-header p {
            color: var(--text-body);
            font-size: 1.05rem;
            max-width: 760px;
        }

        /* Custom Cards */
        .custom-card {
            background-color: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 28px;
            box-shadow: var(--shadow-card);
            transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
            height: 100%;
        }
        .page-section.bg-alt .custom-card {
            background-color: #0d151e;
        }
        .custom-card:hover {
            transform: translateY(-4px);
            border-color: var(--border-highlight);
            box-shadow: var(--shadow-hover);
        }

        /* Live Indicator */
        .live-dot {
            display: inline-block;
            width: 10px;
            height: 10px;
            background-color: var(--live-red);
            border-radius: 50%;
            box-shadow: 0 0 8px var(--live-red);
            animation: livePulse 1.8s infinite;
            margin-right: 6px;
        }
        .status-dot-green {
            display: inline-block;
            width: 8px;
            height: 8px;
            background-color: var(--primary-glow);
            border-radius: 50%;
            box-shadow: 0 0 8px var(--primary-glow);
            margin-right: 6px;
        }

        @keyframes livePulse {
            0% { transform: scale(0.95); opacity: 0.8; }
            50% { transform: scale(1.2); opacity: 1; }
            100% { transform: scale(0.95); opacity: 0.8; }
        }

        /* Buttons & Badges */
        .btn-brand-primary {
            background-color: var(--primary-glow);
            color: #061109;
            font-weight: 700;
            border-radius: var(--radius-sm);
            padding: 12px 28px;
            border: none;
            box-shadow: 0 4px 15px rgba(0, 214, 100, 0.3);
            transition: all 0.2s ease;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-brand-primary:hover {
            background-color: var(--accent-yellow);
            color: #061109;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(226, 252, 82, 0.4);
        }

        .btn-brand-secondary {
            background-color: rgba(255, 255, 255, 0.05);
            color: var(--text-title);
            font-weight: 600;
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-sm);
            padding: 12px 24px;
            transition: all 0.2s ease;
        }
        .btn-brand-secondary:hover {
            background-color: rgba(255, 255, 255, 0.1);
            color: var(--primary-glow);
            border-color: var(--border-highlight);
        }

        .badge-tag {
            background-color: rgba(0, 214, 100, 0.12);
            color: var(--primary-glow);
            border: 1px solid rgba(0, 214, 100, 0.25);
            font-size: 0.8rem;
            font-weight: 600;
            padding: 4px 10px;
            border-radius: 4px;
        }

        /* Data Matrix Board */
        .data-metric-box {
            background: linear-gradient(180deg, rgba(19, 28, 38, 0.8) 0%, rgba(12, 18, 25, 0.95) 100%);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 20px;
            text-align: center;
        }
        .data-metric-box .val {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--accent-yellow);
            margin: 6px 0;
        }
        .data-metric-box .label {
            font-size: 0.88rem;
            color: var(--text-muted);
        }

        /* Comparison Table Custom */
        .comparison-table {
            width: 100%;
            border-collapse: separate;
            border-spacing: 0;
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-subtle);
        }
        .comparison-table th, .comparison-table td {
            padding: 18px 24px;
            background-color: var(--bg-card);
            border-bottom: 1px solid var(--border-subtle);
            color: var(--text-body);
        }
        .comparison-table th {
            background-color: #172330;
            color: var(--text-title);
            font-weight: 700;
        }
        .comparison-table tr:last-child td {
            border-bottom: none;
        }
        .comparison-table .feature-col {
            width: 34%;
            font-weight: 600;
            color: #d1dce8;
        }
        .comparison-table .highlight-col {
            background-color: rgba(0, 214, 100, 0.04);
            border-left: 1px solid rgba(0, 214, 100, 0.25);
            border-right: 1px solid rgba(0, 214, 100, 0.25);
            color: #fff;
            font-weight: 600;
        }
        .comparison-table th.highlight-col {
            background-color: rgba(0, 214, 100, 0.12);
            color: var(--primary-glow);
        }

        /* Timeline */
        .timeline-track {
            position: relative;
            padding-left: 36px;
        }
        .timeline-track::before {
            content: '';
            position: absolute;
            left: 11px;
            top: 10px;
            bottom: 10px;
            width: 2px;
            background-color: rgba(255, 255, 255, 0.1);
        }
        .timeline-item {
            position: relative;
            margin-bottom: 32px;
        }
        .timeline-item:last-child {
            margin-bottom: 0;
        }
        .timeline-item::after {
            content: '';
            position: absolute;
            left: -31px;
            top: 6px;
            width: 14px;
            height: 14px;
            border-radius: 50%;
            background-color: var(--bg-deep);
            border: 3px solid var(--primary-glow);
        }

        /* Accordion 重塑 */
        .accordion-item {
            background-color: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-sm) !important;
            margin-bottom: 12px;
            overflow: hidden;
        }
        .accordion-button {
            background-color: var(--bg-card);
            color: var(--text-title);
            font-weight: 600;
            padding: 18px 24px;
            box-shadow: none !important;
        }
        .accordion-button:not(.collapsed) {
            background-color: rgba(0, 214, 100, 0.06);
            color: var(--primary-glow);
        }
        .accordion-button::after {
            filter: invert(1) brightness(0.7);
        }
        .accordion-button:not(.collapsed)::after {
            filter: invert(65%) sepia(85%) saturate(380%) hue-rotate(90deg) brightness(100%) contrast(105%);
        }
        .accordion-body {
            padding: 20px 24px;
            color: var(--text-body);
            background-color: var(--bg-card);
            border-top: 1px solid var(--border-subtle);
        }

        /* Form styling */
        .form-control-dark {
            background-color: #0c1219;
            border: 1px solid var(--border-subtle);
            color: #fff;
            padding: 14px 18px;
            border-radius: var(--radius-sm);
        }
        .form-control-dark:focus {
            background-color: #0c1219;
            border-color: var(--primary-glow);
            box-shadow: 0 0 0 3px rgba(0, 214, 100, 0.2);
            color: #fff;
        }
        .form-control-dark::placeholder {
            color: var(--text-muted);
        }

        /* Partner Badges */
        .partner-badge {
            background: rgba(255, 255, 255, 0.02);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-sm);
            padding: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #8da4be;
            font-weight: 600;
            font-size: 0.95rem;
            transition: all 0.2s ease;
        }
        .partner-badge:hover {
            background: rgba(255, 255, 255, 0.06);
            color: #fff;
            border-color: rgba(255, 255, 255, 0.2);
        }

        /* Hero Specific */
        .hero-banner {
            padding: 70px 0 90px;
            background: radial-gradient(circle at 80% 20%, rgba(0, 214, 100, 0.08) 0%, transparent 60%),
                        linear-gradient(180deg, #0c1219 0%, #111a24 100%);
            border-bottom: 1px solid var(--border-subtle);
        }
        .progress-bar-custom {
            height: 8px;
            background-color: rgba(255, 255, 255, 0.1);
            border-radius: 4px;
            overflow: hidden;
        }
        .progress-bar-fill {
            height: 100%;
            background: linear-gradient(90deg, var(--primary-glow), var(--accent-yellow));
            width: 82%;
            border-radius: 4px;
        }

        /* Footer */
        .site-footer {
            background-color: #080c11;
            border-top: 1px solid var(--border-subtle);
            padding: 60px 0 30px;
            font-size: 0.92rem;
        }
        .site-footer h5 {
            font-size: 1.05rem;
            margin-bottom: 20px;
        }
        .site-footer ul {
            list-style: none;
            padding-left: 0;
        }
        .site-footer ul li {
            margin-bottom: 10px;
        }
        .site-footer ul li a {
            color: var(--text-body);
        }
        .site-footer ul li a:hover {
            color: var(--primary-glow);
        }

        @media (max-width: 991px) {
            .page-section { padding: 60px 0; }
            .section-header h2 { font-size: 1.75rem; }
            .comparison-table-wrapper { overflow-x: auto; }
        }