/* roulang page: index */
:root {
            --bg-900: #0B0F0D;
            --bg-850: #101613;
            --bg-800: #151B17;
            --bg-750: #1A201B;
            --bg-700: #1E251F;
            --primary: #24C26A;
            --primary-hi: #2EE67D;
            --amber: #F5A524;
            --orange: #FF5C35;
            --cyan: #38C7E8;
            --magenta: #E84D8A;
            --text-hi: #F4F7F5;
            --text-main: #C9D1CC;
            --text-muted: #8A9A90;
            --border-dim: rgba(255, 255, 255, 0.08);
            --border-mid: rgba(255, 255, 255, 0.14);
            --border-green: rgba(36, 194, 106, 0.25);
            --border-green-strong: rgba(36, 194, 106, 0.45);
            --radius-card: 10px;
            --radius-btn: 8px;
            --radius-input: 8px;
            --radius-badge: 20px;
            --shadow-card: 0 8px 24px rgba(0, 0, 0, 0.35);
            --shadow-card-hover: 0 12px 32px rgba(36, 194, 106, 0.12);
            --font-mono: 'SF Mono', 'Cascadia Code', 'Consolas', 'Menlo', monospace;
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', 'Segoe UI', system-ui, -apple-system, sans-serif;
            --section-spacing: 80px;
            --section-spacing-mobile: 52px;
            --container-max: 1160px;
        }

        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-sans);
            background-color: var(--bg-900);
            color: var(--text-main);
            line-height: 1.85;
            font-size: 15px;
            margin: 0;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        h1, h2, h3, h4, h5, h6 {
            color: var(--text-hi);
            font-family: var(--font-sans);
            line-height: 1.4;
            margin-top: 0;
            letter-spacing: -0.01em;
        }

        h1 {
            font-size: 38px;
            font-weight: 800;
            letter-spacing: -0.02em;
        }

        h2 {
            font-size: 26px;
            font-weight: 700;
            letter-spacing: -0.01em;
        }

        h3 {
            font-size: 18px;
            font-weight: 600;
        }

        p {
            margin-bottom: 1em;
            color: var(--text-main);
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.2s ease, border-color 0.2s ease, background-color 0.2s ease;
        }

        a:hover {
            color: var(--primary-hi);
        }

        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 4px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        ul, ol {
            padding-left: 1.4em;
            margin-bottom: 1em;
        }

        li {
            margin-bottom: 0.4em;
        }

        /* Container */
        .container-site {
            max-width: var(--container-max);
            margin-left: auto;
            margin-right: auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        @media (min-width: 1400px) {
            .container-site {
                max-width: 1220px;
            }
        }

        @media (max-width: 767.98px) {
            .container-site {
                padding-left: 16px;
                padding-right: 16px;
            }
        }

        /* Section */
        .section-block {
            padding-top: var(--section-spacing);
            padding-bottom: var(--section-spacing);
            position: relative;
        }

        @media (max-width: 767.98px) {
            .section-block {
                padding-top: var(--section-spacing-mobile);
                padding-bottom: var(--section-spacing-mobile);
            }
        }

        .section-block-alt {
            background-color: var(--bg-850);
        }

        .section-label {
            display: inline-block;
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            margin-bottom: 8px;
            padding: 3px 10px;
            border-radius: var(--radius-badge);
            background: rgba(36, 194, 106, 0.1);
            border: 1px solid var(--border-green);
        }

        .section-title {
            font-size: 26px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-hi);
        }

        .section-desc {
            font-size: 15px;
            color: var(--text-main);
            max-width: 680px;
            line-height: 1.9;
            margin-bottom: 0;
        }

        /* Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background-color: rgba(11, 15, 13, 0.72);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid transparent;
            transition: background-color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
        }

        .site-header.scrolled {
            background-color: rgba(11, 15, 13, 0.94);
            border-bottom-color: rgba(255, 255, 255, 0.08);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
        }

        .site-header .navbar {
            padding: 12px 0;
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text-hi);
            font-weight: 700;
            font-size: 18px;
            letter-spacing: -0.01em;
            text-decoration: none;
            transition: color 0.2s ease;
        }

        .brand-logo:hover {
            color: var(--primary-hi);
        }

        .brand-logo .logo-mark {
            width: 34px;
            height: 34px;
            border-radius: 6px;
            background: linear-gradient(135deg, var(--primary) 0%, #0E8A4D 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 14px;
            color: #0B0F0D;
            letter-spacing: 0;
            flex-shrink: 0;
        }

        .navbar-nav .nav-link {
            color: var(--text-muted);
            font-size: 14px;
            padding: 8px 12px;
            border-radius: 6px;
            transition: color 0.2s ease, background-color 0.2s ease;
            font-weight: 500;
            letter-spacing: 0.01em;
        }

        .navbar-nav .nav-link:hover {
            color: var(--text-hi);
            background-color: rgba(255, 255, 255, 0.04);
        }

        .navbar-nav .nav-link.active {
            color: var(--primary);
            background-color: rgba(36, 194, 106, 0.08);
            border-bottom: 2px solid var(--primary);
            border-radius: 6px 6px 0 0;
        }

        .command-search {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--border-mid);
            border-radius: var(--radius-input);
            padding: 6px 12px;
            display: flex;
            align-items: center;
            gap: 8px;
            color: var(--text-muted);
            font-size: 13px;
            min-width: 180px;
            cursor: text;
            transition: border-color 0.2s ease, background-color 0.2s ease;
        }

        .command-search:hover {
            border-color: var(--border-green);
            background: rgba(255, 255, 255, 0.08);
        }

        .command-search .kbd-hint {
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid var(--border-dim);
            border-radius: 4px;
            padding: 1px 6px;
            font-size: 10px;
            font-family: var(--font-mono);
            color: var(--text-muted);
            margin-left: auto;
            white-space: nowrap;
        }

        .btn-primary-cta {
            background-color: var(--orange);
            color: #fff;
            border: none;
            border-radius: var(--radius-btn);
            padding: 8px 16px;
            font-size: 14px;
            font-weight: 600;
            letter-spacing: 0.02em;
            transition: background-color 0.25s ease, box-shadow 0.25s ease, transform 0.15s ease;
            box-shadow: 0 2px 8px rgba(255, 92, 53, 0.2);
        }

        .btn-primary-cta:hover {
            background-color: #E64A25;
            box-shadow: 0 4px 16px rgba(255, 92, 53, 0.35);
            color: #fff;
            transform: translateY(-1px);
        }

        .btn-primary-cta:active {
            transform: scale(0.98);
        }

        .btn-green {
            background-color: var(--primary);
            color: #0B0F0D;
            border: none;
            border-radius: var(--radius-btn);
            padding: 10px 20px;
            font-size: 15px;
            font-weight: 700;
            letter-spacing: 0.01em;
            transition: background-color 0.25s ease, box-shadow 0.25s ease, transform 0.15s ease;
        }

        .btn-green:hover {
            background-color: var(--primary-hi);
            box-shadow: 0 0 0 2px rgba(46, 230, 125, 0.3), 0 8px 24px rgba(36, 194, 106, 0.2);
            color: #0B0F0D;
            transform: translateY(-1px);
        }

        .btn-green:active {
            transform: scale(0.98);
        }

        .btn-outline-green {
            background: transparent;
            color: var(--primary);
            border: 1px solid var(--border-green-strong);
            border-radius: var(--radius-btn);
            padding: 10px 20px;
            font-size: 15px;
            font-weight: 600;
            transition: background-color 0.25s ease, border-color 0.25s ease, color 0.25s ease;
        }

        .btn-outline-green:hover {
            background-color: rgba(36, 194, 106, 0.12);
            border-color: var(--primary);
            color: var(--primary-hi);
        }

        .btn-link-green {
            color: var(--primary);
            font-size: 14px;
            font-weight: 500;
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: color 0.2s ease;
        }

        .btn-link-green:hover {
            color: var(--primary-hi);
            text-decoration: underline;
        }

        /* Hero */
        .hero-section {
            padding-top: 64px;
            padding-bottom: 72px;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            position: relative;
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(105deg, rgba(11, 15, 13, 0.92) 25%, rgba(11, 15, 13, 0.65) 62%, rgba(11, 15, 13, 0.45) 100%);
            z-index: 1;
        }

        .hero-section .container-site {
            position: relative;
            z-index: 2;
        }

        .hero-grid {
            display: grid;
            grid-template-columns: 5fr 7fr;
            gap: 36px;
            align-items: center;
        }

        @media (max-width: 991.98px) {
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
        }

        .hero-kicker {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(36, 194, 106, 0.12);
            border: 1px solid var(--border-green);
            border-radius: var(--radius-badge);
            padding: 4px 14px;
            font-size: 12px;
            font-weight: 600;
            color: var(--primary);
            letter-spacing: 0.04em;
            margin-bottom: 16px;
        }

        .hero-kicker .dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background-color: var(--primary-hi);
            animation: pulse-dot 1.8s ease-in-out infinite;
        }

        @keyframes pulse-dot {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.5; transform: scale(1.5); }
        }

        .hero-title {
            font-size: 38px;
            font-weight: 800;
            line-height: 1.3;
            color: var(--text-hi);
            letter-spacing: -0.02em;
            margin-bottom: 16px;
        }

        .hero-title .highlight {
            color: var(--primary);
        }

        .hero-subtitle {
            font-size: 17px;
            line-height: 1.9;
            color: var(--text-main);
            max-width: 540px;
            margin-bottom: 24px;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }

        .hero-data-float {
            background: rgba(16, 22, 19, 0.82);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--border-green);
            border-radius: var(--radius-card);
            padding: 18px 16px;
            box-shadow: var(--shadow-card);
        }

        .hero-float-badge {
            font-size: 11px;
            color: var(--amber);
            font-weight: 600;
            letter-spacing: 0.04em;
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .hero-float-row {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 8px 0;
            border-bottom: 1px solid var(--border-dim);
        }

        .hero-float-row:last-child {
            border-bottom: none;
        }

        .hero-float-label {
            font-size: 12px;
            color: var(--text-muted);
        }

        .hero-float-value {
            font-family: var(--font-mono);
            font-size: 16px;
            font-weight: 600;
            color: var(--text-hi);
        }

        .trend-up {
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
        }

        .trend-down {
            color: var(--orange);
            font-size: 12px;
            font-weight: 600;
        }

        .trend-flat {
            color: var(--text-muted);
            font-size: 12px;
            font-weight: 600;
        }

        /* Metrics */
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }

        @media (max-width: 991.98px) {
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 575.98px) {
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 10px;
            }
        }

        .metric-card {
            background: var(--bg-750);
            border: 1px solid var(--border-dim);
            border-top: 3px solid var(--primary);
            border-radius: var(--radius-card);
            padding: 18px 16px;
            transition: border-color 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
        }

        .metric-card:hover {
            border-color: var(--border-green);
            transform: translateY(-2px);
            box-shadow: var(--shadow-card-hover);
        }

        .metric-value {
            font-family: var(--font-mono);
            font-size: 30px;
            font-weight: 700;
            color: var(--text-hi);
            line-height: 1.2;
            letter-spacing: -0.01em;
            margin-bottom: 4px;
        }

        .metric-label {
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 6px;
        }

        .metric-trend {
            font-size: 12px;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        .sparkline {
            display: flex;
            align-items: flex-end;
            gap: 3px;
            height: 28px;
            margin-top: 10px;
        }

        .sparkline span {
            flex: 1;
            background: var(--primary);
            border-radius: 2px 2px 0 0;
            opacity: 0.55;
            min-height: 4px;
        }

        .sparkline span:nth-child(even) {
            background: var(--cyan);
        }

        .sparkline span:nth-child(3n) {
            background: var(--amber);
        }

        /* Service Matrix */
        .service-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        @media (max-width: 991.98px) {
            .service-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 575.98px) {
            .service-grid {
                grid-template-columns: 1fr;
            }
        }

        .service-card {
            background: var(--bg-700);
            border: 1px solid var(--border-dim);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: border-color 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
            display: flex;
            flex-direction: column;
        }

        .service-card:hover {
            border-color: var(--border-green);
            transform: translateY(-2px);
            box-shadow: var(--shadow-card-hover);
        }

        .service-card-img {
            aspect-ratio: 16 / 9;
            background-size: cover;
            background-position: center;
            transition: transform 0.35s ease;
            position: relative;
            overflow: hidden;
        }

        .service-card:hover .service-card-img {
            transform: scale(1.03);
        }

        .service-card-img::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(11, 15, 13, 0.1) 40%, rgba(11, 15, 13, 0.55) 100%);
        }

        .service-card-body {
            padding: 18px 16px 16px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .service-card-title {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-hi);
            margin-bottom: 6px;
        }

        .service-card-desc {
            font-size: 13px;
            line-height: 1.75;
            color: var(--text-main);
            margin-bottom: 12px;
            flex: 1;
        }

        .service-card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .status-badge {
            display: inline-block;
            font-size: 11px;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: var(--radius-badge);
            letter-spacing: 0.03em;
        }

        .status-badge.hot {
            background: rgba(255, 92, 53, 0.14);
            color: var(--orange);
            border: 1px solid rgba(255, 92, 53, 0.25);
        }

        .status-badge.live {
            background: rgba(36, 194, 106, 0.1);
            color: var(--primary);
            border: 1px solid var(--border-green);
        }

        .status-badge.new {
            background: rgba(56, 199, 232, 0.1);
            color: var(--cyan);
            border: 1px solid rgba(56, 199, 232, 0.25);
        }

        /* Compare Section */
        .compare-table-wrap {
            background: var(--bg-700);
            border-radius: var(--radius-card);
            overflow: hidden;
            border: 1px solid var(--border-dim);
        }

        .compare-table {
            width: 100%;
            border-collapse: collapse;
            font-size: 14px;
        }

        .compare-table th {
            background: var(--bg-800);
            color: var(--text-hi);
            font-weight: 600;
            padding: 14px 16px;
            text-align: left;
            border-bottom: 1px solid var(--border-mid);
            font-size: 13px;
            letter-spacing: 0.02em;
        }

        .compare-table td {
            padding: 12px 16px;
            border-bottom: 1px solid var(--border-dim);
            color: var(--text-main);
        }

        .compare-table tr:last-child td {
            border-bottom: none;
        }

        .compare-table .col-highlight {
            background: rgba(36, 194, 106, 0.06);
            border-left: 3px solid var(--primary);
        }

        .compare-table .col-amber {
            background: rgba(245, 165, 36, 0.06);
            border-left: 3px solid var(--amber);
        }

        .compare-table .value-strong {
            font-family: var(--font-mono);
            font-weight: 700;
            color: var(--text-hi);
            font-size: 16px;
        }

        .compare-table .value-green {
            color: var(--primary);
            font-weight: 600;
            font-family: var(--font-mono);
        }

        .compare-table .value-amber {
            color: var(--amber);
            font-weight: 600;
            font-family: var(--font-mono);
        }

        /* News Module */
        .news-list {
            list-style: none;
            padding: 0;
            margin: 0;
            display: grid;
            grid-template-columns: 1fr;
            gap: 12px;
        }

        .news-item {
            background: var(--bg-700);
            border: 1px solid var(--border-dim);
            border-radius: var(--radius-card);
            padding: 16px 20px;
            display: flex;
            gap: 16px;
            align-items: flex-start;
            transition: border-color 0.25s ease, transform 0.25s ease;
        }

        .news-item:hover {
            border-color: var(--border-green);
            transform: translateY(-1px);
        }

        .news-date {
            font-family: var(--font-mono);
            font-size: 12px;
            color: var(--text-muted);
            white-space: nowrap;
            padding-top: 2px;
        }

        .news-content {
            flex: 1;
        }

        .news-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-hi);
            margin-bottom: 4px;
            line-height: 1.5;
        }

        .news-summary {
            font-size: 13px;
            line-height: 1.8;
            color: var(--text-main);
            margin-bottom: 0;
        }

        .news-tag {
            display: inline-block;
            font-size: 10px;
            font-weight: 600;
            padding: 2px 8px;
            border-radius: var(--radius-badge);
            background: rgba(36, 194, 106, 0.08);
            color: var(--primary);
            border: 1px solid var(--border-green);
            margin-right: 6px;
            white-space: nowrap;
        }

        /* Testimonials */
        .testimonial-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 16px;
        }

        @media (max-width: 991.98px) {
            .testimonial-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 575.98px) {
            .testimonial-grid {
                grid-template-columns: 1fr;
            }
        }

        .testimonial-card {
            background: var(--bg-700);
            border: 1px solid var(--border-dim);
            border-radius: var(--radius-card);
            padding: 18px 16px;
            transition: border-color 0.25s ease;
        }

        .testimonial-card:hover {
            border-color: var(--border-green);
        }

        .testimonial-stars {
            color: var(--amber);
            font-size: 13px;
            letter-spacing: 2px;
            margin-bottom: 8px;
        }

        .testimonial-text {
            font-size: 13px;
            line-height: 1.8;
            color: var(--text-main);
            margin-bottom: 12px;
        }

        .testimonial-author {
            font-size: 12px;
            color: var(--text-muted);
            font-weight: 500;
        }

        /* Partner Tags */
        .partner-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .partner-tag {
            background: var(--bg-700);
            border: 1px solid var(--border-dim);
            border-radius: var(--radius-badge);
            padding: 8px 16px;
            font-size: 13px;
            color: var(--text-main);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: border-color 0.25s ease, background-color 0.25s ease;
        }

        .partner-tag:hover {
            border-color: var(--border-green);
            background: rgba(36, 194, 106, 0.06);
        }

        .partner-tag .tag-icon {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--primary);
            flex-shrink: 0;
        }

        /* FAQ */
        .faq-accordion .accordion-item {
            background: var(--bg-700);
            border: 1px solid var(--border-dim);
            border-radius: var(--radius-card) !important;
            margin-bottom: 10px;
            overflow: hidden;
            transition: border-color 0.25s ease;
        }

        .faq-accordion .accordion-item:hover {
            border-color: var(--border-green);
        }

        .faq-accordion .accordion-header {
            margin: 0;
        }

        .faq-accordion .accordion-button {
            background: transparent;
            color: var(--text-hi);
            font-size: 15px;
            font-weight: 600;
            padding: 16px 20px;
            border: none;
            box-shadow: none;
            transition: color 0.2s ease, background-color 0.2s ease;
        }

        .faq-accordion .accordion-button:hover {
            color: var(--primary);
        }

        .faq-accordion .accordion-button:not(.collapsed) {
            background: rgba(36, 194, 106, 0.06);
            color: var(--primary);
            border-bottom: 1px solid var(--border-green);
            border-radius: var(--radius-card) var(--radius-card) 0 0 !important;
        }

        .faq-accordion .accordion-button::after {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%2324C26A'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
        }

        .faq-accordion .accordion-body {
            background: var(--bg-750);
            color: var(--text-main);
            font-size: 14px;
            line-height: 1.8;
            padding: 16px 20px;
            border-radius: 0 0 var(--radius-card) var(--radius-card);
        }

        /* CTA Form */
        .cta-section {
            background: linear-gradient(135deg, var(--bg-850) 0%, #0D1410 60%, #0F1A13 100%);
            border-top: 1px solid var(--border-dim);
            border-bottom: 1px solid var(--border-dim);
        }

        .cta-card {
            background: var(--bg-750);
            border: 1px solid var(--border-green);
            border-radius: var(--radius-card);
            padding: 32px 28px;
            box-shadow: var(--shadow-card);
        }

        .cta-card h2 {
            font-size: 22px;
            margin-bottom: 8px;
        }

        .cta-card p {
            font-size: 15px;
            line-height: 1.85;
            color: var(--text-main);
            margin-bottom: 20px;
        }

        .form-control-dark {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: var(--radius-input);
            color: var(--text-hi);
            padding: 10px 14px;
            font-size: 14px;
            transition: border-color 0.25s ease, box-shadow 0.25s ease, background-color 0.25s ease;
        }

        .form-control-dark:focus {
            background: rgba(255, 255, 255, 0.08);
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(36, 194, 106, 0.2);
            color: var(--text-hi);
            outline: none;
        }

        .form-control-dark::placeholder {
            color: var(--text-muted);
        }

        .form-label-dark {
            color: var(--text-main);
            font-size: 13px;
            font-weight: 500;
            margin-bottom: 6px;
        }

        .privacy-note {
            font-size: 12px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        .value-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .value-list li {
            display: flex;
            align-items: flex-start;
            gap: 8px;
            font-size: 14px;
            color: var(--text-main);
            margin-bottom: 8px;
            line-height: 1.7;
        }

        .value-list li::before {
            content: '';
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--primary);
            flex-shrink: 0;
            margin-top: 6px;
        }

        /* Brand Story */
        .brand-story {
            background: var(--bg-750);
            border-left: 4px solid var(--primary);
            border-radius: 0 var(--radius-card) var(--radius-card) 0;
            padding: 24px 28px;
        }

        .brand-story h3 {
            color: var(--primary);
            font-size: 18px;
            margin-bottom: 10px;
        }

        .brand-story p {
            font-size: 15px;
            line-height: 1.95;
            color: var(--text-main);
        }

        /* Footer */
        .site-footer {
            background: var(--bg-900);
            border-top: 1px solid var(--border-dim);
            padding-top: 48px;
            padding-bottom: 24px;
        }

        .footer-col-title {
            color: var(--text-hi);
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 14px;
            letter-spacing: 0.03em;
        }

        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-links li {
            margin-bottom: 8px;
        }

        .footer-links a {
            color: var(--text-muted);
            font-size: 13px;
            text-decoration: none;
            transition: color 0.2s ease;
        }

        .footer-links a:hover {
            color: var(--primary);
        }

        .footer-bottom {
            border-top: 1px solid var(--border-dim);
            margin-top: 36px;
            padding-top: 20px;
            font-size: 12px;
            color: var(--text-muted);
            line-height: 1.8;
        }

        .footer-bottom a {
            color: var(--text-muted);
            text-decoration: none;
        }

        .footer-bottom a:hover {
            color: var(--primary);
        }

        .risk-note {
            font-size: 12px;
            color: #6A7A70;
            line-height: 1.8;
            margin-top: 10px;
            padding: 10px 14px;
            background: rgba(255, 92, 53, 0.05);
            border-radius: 6px;
            border-left: 3px solid rgba(255, 92, 53, 0.35);
        }

        /* Mobile menu adjustments */
        @media (max-width: 991.98px) {
            .navbar-collapse {
                background: var(--bg-900);
                border-radius: var(--radius-card);
                padding: 16px;
                margin-top: 8px;
                border: 1px solid var(--border-dim);
            }
            .command-search {
                min-width: 100%;
                margin-top: 8px;
            }
            .hero-title {
                font-size: 28px;
            }
            .section-title {
                font-size: 22px;
            }
            .metric-value {
                font-size: 24px;
            }
        }

        @media (max-width: 575.98px) {
            .hero-title {
                font-size: 24px;
            }
            .hero-subtitle {
                font-size: 15px;
            }
            .section-title {
                font-size: 20px;
            }
            .cta-card {
                padding: 20px 16px;
            }
            .compare-table {
                font-size: 12px;
            }
            .compare-table th,
            .compare-table td {
                padding: 8px 10px;
            }
        }

        /* Scroll progress accent */
        .section-divider {
            width: 60px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            margin-bottom: 20px;
        }

/* roulang page: category2 */
:root {
  --bg-900: #0B0F0D;
  --bg-850: #101613;
  --bg-800: #151B17;
  --bg-750: #1A201B;
  --bg-700: #1E251F;
  --primary: #24C26A;
  --primary-hi: #2EE67D;
  --amber: #F5A524;
  --orange: #FF5C35;
  --cyan: #38C7E8;
  --magenta: #E84D8A;
  --text-hi: #F4F7F5;
  --text-main: #C9D1CC;
  --text-muted: #8A9A90;
  --border-dim: rgba(255, 255, 255, 0.08);
  --border-mid: rgba(255, 255, 255, 0.14);
  --border-green: rgba(36, 194, 106, 0.25);
  --border-green-strong: rgba(36, 194, 106, 0.45);
  --radius-card: 10px;
  --radius-btn: 8px;
  --radius-input: 8px;
  --radius-badge: 20px;
  --shadow-card: 0 8px 24px rgba(0, 0, 0, 0.35);
  --shadow-card-hover: 0 12px 32px rgba(36, 194, 106, 0.12);
  --font-mono: 'SF Mono', 'Cascadia Code', 'Consolas', 'Menlo', monospace;
  --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', 'Segoe UI', system-ui, -apple-system, sans-serif;
  --section-spacing: 80px;
  --section-spacing-mobile: 52px;
  --container-max: 1160px;
}
html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}
body {
  font-family: var(--font-sans);
  background-color: var(--bg-900);
  color: var(--text-main);
  line-height: 1.85;
  font-size: 15px;
  margin: 0;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
a {
  color: var(--primary);
  text-decoration: none;
  transition: color 0.2s ease, border-color 0.2s ease, background-color 0.2s ease;
}
a:hover {
  color: var(--primary-hi);
}
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
  border-radius: 4px;
}
img {
  max-width: 100%;
  height: auto;
  display: block;
}
.container-site {
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}
.section-block {
  padding-top: var(--section-spacing);
  padding-bottom: var(--section-spacing);
  position: relative;
}
.section-block-alt {
  background-color: var(--bg-850);
}
.section-label {
  display: inline-block;
  color: var(--primary);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 8px;
  padding: 3px 10px;
  border-radius: var(--radius-badge);
  background: rgba(36, 194, 106, 0.1);
  border: 1px solid var(--border-green);
}
.section-title {
  font-size: 26px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text-hi);
}
.section-desc {
  font-size: 15px;
  color: var(--text-main);
  max-width: 680px;
  line-height: 1.9;
  margin-bottom: 0;
}
/* Navigation */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1050;
  background-color: rgba(11, 15, 13, 0.72);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  transition: background-color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}
.site-header.scrolled {
  background-color: rgba(11, 15, 13, 0.94);
  border-bottom-color: rgba(255, 255, 255, 0.08);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}
.site-header .navbar {
  padding: 12px 0;
}
.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-hi);
  font-weight: 700;
  font-size: 18px;
  letter-spacing: -0.01em;
  text-decoration: none;
  transition: color 0.2s ease;
}
.brand-logo:hover {
  color: var(--primary-hi);
}
.brand-logo .logo-mark {
  width: 34px;
  height: 34px;
  border-radius: 6px;
  background: linear-gradient(135deg, var(--primary) 0%, #0E8A4D 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 14px;
  color: #0B0F0D;
  letter-spacing: 0;
  flex-shrink: 0;
}
.navbar-nav .nav-link {
  color: var(--text-muted);
  font-size: 14px;
  padding: 8px 12px;
  border-radius: 6px;
  transition: color 0.2s ease, background-color 0.2s ease;
  font-weight: 500;
  letter-spacing: 0.01em;
}
.navbar-nav .nav-link:hover {
  color: var(--primary-hi);
  background: rgba(36, 194, 106, 0.08);
}
.navbar-nav .nav-link.active {
  color: var(--primary);
  background: rgba(36, 194, 106, 0.12);
  font-weight: 600;
}
.command-search {
  display: flex;
  align-items: center;
  gap: 10px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--border-green);
  border-radius: var(--radius-input);
  padding: 6px 14px;
  font-size: 13px;
  color: var(--text-muted);
  min-width: 200px;
  cursor: text;
  transition: border-color 0.2s ease, background-color 0.2s ease;
}
.command-search:hover, .command-search:focus {
  border-color: var(--border-green-strong);
  background: rgba(255, 255, 255, 0.12);
}
.command-search .kbd-hint {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
  border: 1px solid var(--border-mid);
  padding: 2px 6px;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.06);
  margin-left: auto;
  white-space: nowrap;
}
.btn-primary-cta {
  background: var(--orange);
  color: #fff;
  border: none;
  border-radius: var(--radius-btn);
  padding: 8px 18px;
  font-weight: 600;
  font-size: 14px;
  transition: all 0.2s ease;
  white-space: nowrap;
}
.btn-primary-cta:hover {
  background: #ff6b45;
  color: #fff;
  box-shadow: 0 0 16px rgba(255, 92, 53, 0.35);
}
.btn-primary-cta:active {
  transform: scale(0.98);
}
.btn-outline-primary-custom {
  background: transparent;
  border: 1px solid var(--primary);
  color: var(--primary);
  border-radius: var(--radius-btn);
  padding: 8px 18px;
  font-weight: 600;
  font-size: 14px;
  transition: all 0.2s ease;
  white-space: nowrap;
}
.btn-outline-primary-custom:hover {
  background: rgba(36, 194, 106, 0.12);
  border-color: var(--primary-hi);
  color: var(--primary-hi);
}
.navbar-toggler {
  border: 1px solid var(--border-mid);
  border-radius: 6px;
  padding: 6px 10px;
}
.navbar-toggler-icon {
  background-image: none;
  position: relative;
  width: 24px;
  height: 18px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.navbar-toggler-icon::before,
.navbar-toggler-icon::after {
  content: '';
  display: block;
  width: 100%;
  height: 2px;
  background: var(--text-hi);
  border-radius: 2px;
}
.navbar-toggler-icon::before {
  box-shadow: 0 7px 0 var(--text-hi);
}

/* Hero for category page */
.category-hero {
  position: relative;
  padding: 100px 0 80px;
  background: var(--bg-850);
  border-bottom: 1px solid var(--border-dim);
  overflow: hidden;
}
.category-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  opacity: 0.18;
  pointer-events: none;
}
.category-hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(11, 15, 13, 0.55) 0%, rgba(11, 15, 13, 0.9) 100%);
  pointer-events: none;
}
.category-hero .container-site {
  position: relative;
  z-index: 1;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(36, 194, 106, 0.12);
  border: 1px solid var(--border-green);
  color: var(--primary);
  font-size: 12px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: var(--radius-badge);
  margin-bottom: 16px;
}
.hero-badge .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--primary);
  animation: pulse-dot 2s infinite;
}
@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}
.category-hero h1 {
  font-size: 38px;
  font-weight: 800;
  color: var(--text-hi);
  line-height: 1.3;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}
.category-hero .hero-lead {
  font-size: 17px;
  color: var(--text-main);
  max-width: 620px;
  line-height: 1.9;
  margin-bottom: 28px;
}
.hero-stats-row {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}
.hero-stat-item {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-dim);
  border-radius: var(--radius-card);
  padding: 14px 20px;
  min-width: 140px;
}
.hero-stat-item .stat-num {
  font-family: var(--font-mono);
  font-size: 24px;
  font-weight: 700;
  color: var(--primary);
  display: block;
}
.hero-stat-item .stat-label {
  font-size: 12px;
  color: var(--text-muted);
}

/* Card grid section */
.card-grid-section {
  padding-top: 64px;
  padding-bottom: 72px;
}
.card-grid-section .section-header {
  margin-bottom: 32px;
}
.filter-bar {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 28px;
}
.filter-chip {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-dim);
  border-radius: var(--radius-badge);
  padding: 6px 14px;
  font-size: 13px;
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.2s ease;
}
.filter-chip:hover {
  color: var(--primary);
  border-color: var(--border-green);
  background: rgba(36, 194, 106, 0.06);
}
.filter-chip.active {
  color: var(--primary);
  border-color: var(--primary);
  background: rgba(36, 194, 106, 0.12);
  font-weight: 600;
}
.data-card {
  background: var(--bg-800);
  border: 1px solid var(--border-dim);
  border-radius: var(--radius-card);
  overflow: hidden;
  transition: all 0.25s ease;
  height: 100%;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-card);
}
.data-card:hover {
  border-color: var(--border-green);
  transform: translateY(-2px);
  box-shadow: var(--shadow-card-hover);
}
.data-card .card-img {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--bg-700);
}
.data-card .card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}
.data-card:hover .card-img img {
  transform: scale(1.03);
}
.data-card .card-img .img-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(11, 15, 13, 0.1) 0%, rgba(11, 15, 13, 0.7) 100%);
  pointer-events: none;
}
.data-card .card-badge-corner {
  position: absolute;
  top: 10px;
  right: 10px;
  background: rgba(11, 15, 13, 0.75);
  backdrop-filter: blur(8px);
  border: 1px solid var(--border-green);
  color: var(--primary);
  font-size: 11px;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: var(--radius-badge);
}
.data-card .card-body {
  padding: 18px 20px 16px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.data-card .card-title {
  font-size: 17px;
  font-weight: 700;
  color: var(--text-hi);
  margin-bottom: 6px;
  line-height: 1.4;
}
.data-card .card-summary {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 12px;
  flex: 1;
}
.data-card .card-metrics {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 12px;
}
.metric-tag {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-dim);
  border-radius: 6px;
  padding: 4px 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  color: var(--text-main);
}
.metric-tag.positive {
  color: var(--primary);
  border-color: var(--border-green);
}
.metric-tag.negative {
  color: #ff6b6b;
  border-color: rgba(255, 107, 107, 0.3);
}
.metric-tag.neutral {
  color: var(--amber);
  border-color: rgba(245, 165, 36, 0.3);
}
.card-entry-link {
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: color 0.2s ease;
}
.card-entry-link:hover {
  color: var(--primary-hi);
}
.card-entry-link .arrow {
  transition: transform 0.2s ease;
}
.card-entry-link:hover .arrow {
  transform: translateX(3px);
}

/* Info strip */
.info-strip {
  background: var(--bg-750);
  border-top: 1px solid var(--border-dim);
  border-bottom: 1px solid var(--border-dim);
  padding: 28px 0;
}
.info-strip .strip-item {
  display: flex;
  align-items: center;
  gap: 12px;
}
.info-strip .strip-icon {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: rgba(36, 194, 106, 0.1);
  border: 1px solid var(--border-green);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 16px;
  flex-shrink: 0;
}
.info-strip .strip-text strong {
  display: block;
  color: var(--text-hi);
  font-size: 13px;
  font-weight: 600;
}
.info-strip .strip-text span {
  font-size: 12px;
  color: var(--text-muted);
}

/* CTA section */
.cta-section {
  background: var(--bg-850);
  padding: 64px 0;
  border-bottom: 1px solid var(--border-dim);
}
.cta-card {
  background: linear-gradient(135deg, var(--bg-750) 0%, #0D1F16 100%);
  border: 1px solid var(--border-green);
  border-radius: var(--radius-card);
  padding: 32px 36px;
  box-shadow: var(--shadow-card);
}
.cta-card h2 {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-hi);
  margin-bottom: 8px;
}
.cta-card p {
  font-size: 14px;
  color: var(--text-main);
  margin-bottom: 20px;
  line-height: 1.8;
}

/* FAQ */
.faq-section {
  padding: 64px 0;
}
.faq-item {
  border: 1px solid var(--border-dim);
  border-radius: var(--radius-card);
  margin-bottom: 10px;
  overflow: hidden;
  transition: border-color 0.25s ease;
  background: var(--bg-800);
}
.faq-item:hover {
  border-color: var(--border-green);
}
.faq-item.open {
  border-color: var(--border-green-strong);
}
.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 20px;
  background: transparent;
  border: none;
  color: var(--text-hi);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  text-align: left;
  transition: color 0.2s ease;
}
.faq-question:hover {
  color: var(--primary);
}
.faq-question .faq-icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  border: 1px solid var(--border-mid);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  color: var(--text-muted);
  transition: all 0.25s ease;
}
.faq-item.open .faq-icon {
  transform: rotate(45deg);
  color: var(--primary);
  border-color: var(--primary);
}
.faq-answer {
  display: none;
  padding: 0 20px 16px;
  font-size: 14px;
  color: var(--text-main);
  line-height: 1.8;
}
.faq-item.open .faq-answer {
  display: block;
}

/* Footer */
.site-footer {
  background: var(--bg-900);
  border-top: 1px solid var(--border-dim);
  padding: 48px 0 0;
}
.site-footer .footer-col-title {
  font-size: 13px;
  font-weight: 700;
  color: var(--text-hi);
  margin-bottom: 14px;
  letter-spacing: 0.03em;
}
.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}
.footer-links li {
  margin-bottom: 8px;
}
.footer-links a {
  font-size: 13px;
  color: var(--text-muted);
  transition: color 0.2s ease;
}
.footer-links a:hover {
  color: var(--primary);
}
.footer-bottom {
  border-top: 1px solid var(--border-dim);
  padding: 16px 0;
  margin-top: 32px;
  font-size: 12px;
  color: var(--text-muted);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}
.footer-bottom a {
  color: var(--text-muted);
  font-size: 12px;
}
.footer-bottom a:hover {
  color: var(--primary);
}
.footer-risk {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 8px;
  line-height: 1.7;
}

/* Responsive */
@media (max-width: 991.98px) {
  .command-search {
    display: none;
  }
  .navbar-nav {
    padding: 12px 0;
  }
  .navbar-nav .nav-link {
    padding: 8px 8px;
    font-size: 13px;
  }
  .category-hero {
    padding: 70px 0 50px;
  }
  .category-hero h1 {
    font-size: 30px;
  }
}
@media (max-width: 767.98px) {
  .section-block {
    padding-top: var(--section-spacing-mobile);
    padding-bottom: var(--section-spacing-mobile);
  }
  .category-hero {
    padding: 48px 0 36px;
  }
  .category-hero h1 {
    font-size: 26px;
  }
  .category-hero .hero-lead {
    font-size: 15px;
  }
  .hero-stats-row {
    gap: 10px;
  }
  .hero-stat-item {
    padding: 10px 14px;
    min-width: 100px;
  }
  .hero-stat-item .stat-num {
    font-size: 18px;
  }
  .card-grid-section {
    padding-top: 36px;
    padding-bottom: 40px;
  }
  .section-title {
    font-size: 21px;
  }
  .data-card .card-body {
    padding: 14px 16px 12px;
  }
  .data-card .card-title {
    font-size: 15px;
  }
  .cta-card {
    padding: 20px 18px;
  }
  .cta-card h2 {
    font-size: 19px;
  }
  .faq-question {
    font-size: 13px;
    padding: 12px 14px;
  }
  .faq-answer {
    padding: 0 14px 12px;
    font-size: 13px;
  }
  .container-site {
    padding-left: 16px;
    padding-right: 16px;
  }
  .filter-bar {
    gap: 6px;
  }
  .filter-chip {
    padding: 4px 10px;
    font-size: 11px;
  }
}
@media (max-width: 575.98px) {
  .brand-logo {
    font-size: 15px;
    gap: 6px;
  }
  .brand-logo .logo-mark {
    width: 28px;
    height: 28px;
    font-size: 12px;
    border-radius: 5px;
  }
  .btn-primary-cta {
    padding: 6px 12px;
    font-size: 12px;
  }
  .category-hero h1 {
    font-size: 22px;
  }
  .category-hero .hero-lead {
    font-size: 13px;
  }
  .hero-stat-item .stat-num {
    font-size: 15px;
  }
  .hero-stat-item .stat-label {
    font-size: 10px;
  }
  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }
}

/* roulang page: category1 */
:root {
            --bg-900: #0B0F0D;
            --bg-850: #101613;
            --bg-800: #151B17;
            --bg-750: #1A201B;
            --bg-700: #1E251F;
            --primary: #24C26A;
            --primary-hi: #2EE67D;
            --amber: #F5A524;
            --orange: #FF5C35;
            --cyan: #38C7E8;
            --magenta: #E84D8A;
            --text-hi: #F4F7F5;
            --text-main: #C9D1CC;
            --text-muted: #8A9A90;
            --border-dim: rgba(255, 255, 255, 0.08);
            --border-mid: rgba(255, 255, 255, 0.14);
            --border-green: rgba(36, 194, 106, 0.25);
            --border-green-strong: rgba(36, 194, 106, 0.45);
            --radius-card: 10px;
            --radius-btn: 8px;
            --radius-input: 8px;
            --radius-badge: 20px;
            --shadow-card: 0 8px 24px rgba(0, 0, 0, 0.35);
            --shadow-card-hover: 0 12px 32px rgba(36, 194, 106, 0.12);
            --font-mono: 'SF Mono', 'Cascadia Code', 'Consolas', 'Menlo', monospace;
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', 'Segoe UI', system-ui, -apple-system, sans-serif;
            --section-spacing: 80px;
            --section-spacing-mobile: 52px;
            --container-max: 1160px;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-sans);
            background-color: var(--bg-900);
            color: var(--text-main);
            line-height: 1.85;
            font-size: 15px;
            margin: 0;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.2s ease, border-color 0.2s ease, background-color 0.2s ease;
        }
        a:hover {
            color: var(--primary-hi);
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 4px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container-site {
            max-width: var(--container-max);
            margin-left: auto;
            margin-right: auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        @media (min-width: 1200px) {
            .container-site {
                max-width: 1220px;
            }
        }
        @media (max-width: 576px) {
            .container-site {
                padding-left: 16px;
                padding-right: 16px;
            }
        }
        .section-block {
            padding-top: var(--section-spacing);
            padding-bottom: var(--section-spacing);
            position: relative;
        }
        @media (max-width: 768px) {
            .section-block {
                padding-top: var(--section-spacing-mobile);
                padding-bottom: var(--section-spacing-mobile);
            }
        }
        .section-block-alt {
            background-color: var(--bg-850);
        }
        .section-label {
            display: inline-block;
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            margin-bottom: 8px;
            padding: 3px 10px;
            border-radius: var(--radius-badge);
            background: rgba(36, 194, 106, 0.1);
            border: 1px solid var(--border-green);
        }
        .section-title {
            font-size: 26px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-hi);
        }
        .section-desc {
            font-size: 15px;
            color: var(--text-main);
            max-width: 680px;
            line-height: 1.9;
            margin-bottom: 0;
        }
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background-color: rgba(11, 15, 13, 0.72);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid transparent;
            transition: background-color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
        }
        .site-header.scrolled {
            background-color: rgba(11, 15, 13, 0.94);
            border-bottom-color: rgba(255, 255, 255, 0.08);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
        }
        .site-header .navbar {
            padding: 12px 0;
        }
        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text-hi);
            font-weight: 700;
            font-size: 18px;
            letter-spacing: -0.01em;
            text-decoration: none;
            transition: color 0.2s ease;
        }
        .brand-logo:hover {
            color: var(--primary-hi);
        }
        .brand-logo .logo-mark {
            width: 34px;
            height: 34px;
            border-radius: 6px;
            background: linear-gradient(135deg, var(--primary) 0%, #0E8A4D 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 14px;
            color: #0B0F0D;
            letter-spacing: 0;
            flex-shrink: 0;
        }
        .navbar-nav .nav-link {
            color: var(--text-muted);
            font-size: 14px;
            padding: 8px 12px;
            border-radius: 6px;
            transition: color 0.2s ease, background-color 0.2s ease;
            font-weight: 500;
            letter-spacing: 0.01em;
        }
        .navbar-nav .nav-link:hover {
            color: var(--text-hi);
            background-color: rgba(36, 194, 106, 0.08);
        }
        .navbar-nav .nav-link.active {
            color: var(--primary);
            font-weight: 600;
            position: relative;
        }
        .navbar-nav .nav-link.active::after {
            content: '';
            position: absolute;
            left: 12px;
            right: 12px;
            bottom: 4px;
            height: 2px;
            border-radius: 2px;
            background-color: var(--primary);
        }
        .command-search {
            display: flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid var(--border-green);
            border-radius: var(--radius-btn);
            padding: 6px 14px;
            font-size: 13px;
            color: var(--text-muted);
            cursor: pointer;
            transition: border-color 0.2s ease, background-color 0.2s ease;
            white-space: nowrap;
        }
        .command-search:hover {
            border-color: var(--border-green-strong);
            background: rgba(255, 255, 255, 0.12);
        }
        .kbd-hint {
            font-family: var(--font-mono);
            font-size: 11px;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 4px;
            padding: 1px 6px;
            color: var(--text-muted);
        }
        .btn-primary-cta {
            background-color: var(--orange);
            border: none;
            color: #fff;
            font-weight: 600;
            font-size: 14px;
            padding: 8px 18px;
            border-radius: var(--radius-btn);
            transition: background-color 0.2s ease, box-shadow 0.2s ease, transform 0.15s ease;
            white-space: nowrap;
        }
        .btn-primary-cta:hover,
        .btn-primary-cta:focus {
            background-color: #ff6a45;
            color: #fff;
            box-shadow: 0 0 0 3px rgba(255, 92, 53, 0.25);
        }
        .btn-primary-cta:active {
            transform: scale(0.98);
        }
        .navbar-toggler {
            border: 1px solid var(--border-mid);
            border-radius: 6px;
            padding: 6px 10px;
        }
        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='%2324C26A' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }
        .hero-bento {
            position: relative;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            padding-top: 72px;
            padding-bottom: 72px;
            overflow: hidden;
        }
        .hero-bento::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(105deg, rgba(11, 15, 13, 0.96) 0%, rgba(11, 15, 13, 0.82) 45%, rgba(11, 15, 13, 0.55) 100%);
            z-index: 1;
        }
        .hero-bento::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(circle at 80% 20%, rgba(36, 194, 106, 0.15) 0%, transparent 55%);
            z-index: 2;
            pointer-events: none;
        }
        .hero-bento .container-site {
            position: relative;
            z-index: 3;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(36, 194, 106, 0.12);
            border: 1px solid var(--border-green);
            color: var(--primary-hi);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: var(--radius-badge);
            margin-bottom: 16px;
            letter-spacing: 0.04em;
        }
        .hero-badge .dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--primary-hi);
            animation: pulse-dot 1.8s ease-in-out infinite;
        }
        @keyframes pulse-dot {
            0%,
            100% {
                opacity: 1;
                transform: scale(1);
            }
            50% {
                opacity: 0.5;
                transform: scale(1.5);
            }
        }
        .hero-title {
            font-size: 38px;
            font-weight: 800;
            line-height: 1.25;
            color: var(--text-hi);
            margin-bottom: 16px;
            letter-spacing: -0.02em;
        }
        .hero-title .accent-green {
            color: var(--primary-hi);
        }
        .hero-title .accent-amber {
            color: var(--amber);
        }
        .hero-subtitle {
            font-size: 17px;
            color: var(--text-main);
            line-height: 1.9;
            max-width: 560px;
            margin-bottom: 24px;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-bottom: 28px;
        }
        .btn-primary-green {
            background-color: var(--primary);
            border: none;
            color: #0B0F0D;
            font-weight: 700;
            font-size: 15px;
            padding: 10px 24px;
            border-radius: var(--radius-btn);
            transition: background-color 0.2s ease, box-shadow 0.2s ease, transform 0.15s ease;
        }
        .btn-primary-green:hover,
        .btn-primary-green:focus {
            background-color: var(--primary-hi);
            color: #0B0F0D;
            box-shadow: 0 0 0 3px rgba(36, 194, 106, 0.25);
        }
        .btn-primary-green:active {
            transform: scale(0.98);
        }
        .btn-outline-green {
            background: transparent;
            border: 1px solid var(--border-green-strong);
            color: var(--primary);
            font-weight: 600;
            font-size: 15px;
            padding: 10px 24px;
            border-radius: var(--radius-btn);
            transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease;
        }
        .btn-outline-green:hover,
        .btn-outline-green:focus {
            background-color: rgba(36, 194, 106, 0.12);
            border-color: var(--primary-hi);
            color: var(--primary-hi);
        }
        .hero-bento-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr;
            gap: 20px;
            align-items: stretch;
        }
        .hero-main-block {
            background: rgba(11, 15, 13, 0.6);
            border: 1px solid var(--border-dim);
            border-radius: var(--radius-card);
            padding: 32px;
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
        }
        .hero-side-stack {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .hero-mini-card {
            background: rgba(11, 15, 13, 0.7);
            border: 1px solid var(--border-green);
            border-radius: var(--radius-card);
            padding: 18px 20px;
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            display: flex;
            align-items: center;
            gap: 14px;
            transition: border-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
        }
        .hero-mini-card:hover {
            border-color: var(--border-green-strong);
            transform: translateY(-2px);
            box-shadow: var(--shadow-card-hover);
        }
        .hero-mini-icon {
            width: 40px;
            height: 40px;
            border-radius: 8px;
            background: rgba(36, 194, 106, 0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            flex-shrink: 0;
        }
        .hero-mini-info .mini-label {
            font-size: 11px;
            color: var(--text-muted);
            margin-bottom: 2px;
        }
        .hero-mini-info .mini-value {
            font-family: var(--font-mono);
            font-size: 18px;
            font-weight: 600;
            color: var(--text-hi);
        }
        .hero-mini-info .mini-trend {
            font-size: 12px;
            font-weight: 600;
        }
        .trend-up {
            color: var(--primary-hi);
        }
        .trend-down {
            color: var(--orange);
        }
        .hero-cta-strip {
            margin-top: 20px;
            background: rgba(36, 194, 106, 0.1);
            border: 1px solid var(--border-green);
            border-radius: var(--radius-btn);
            padding: 14px 20px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
        }
        .hero-cta-strip .strip-text {
            font-size: 13px;
            color: var(--text-main);
            margin: 0;
        }
        .hero-cta-strip .strip-link {
            font-size: 13px;
            font-weight: 600;
            color: var(--primary-hi);
            white-space: nowrap;
        }
        .dashboard-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }
        .dashboard-card {
            background: var(--bg-750);
            border: 1px solid var(--border-dim);
            border-top: 2px solid var(--primary);
            border-radius: var(--radius-card);
            padding: 20px;
            transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
        }
        .dashboard-card:hover {
            border-color: var(--border-green-strong);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }
        .dashboard-value {
            font-family: var(--font-mono);
            font-size: 30px;
            font-weight: 700;
            color: var(--text-hi);
            line-height: 1.2;
            margin-bottom: 4px;
        }
        .dashboard-label {
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 10px;
        }
        .dashboard-badge {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 12px;
            font-weight: 600;
            padding: 2px 10px;
            border-radius: var(--radius-badge);
        }
        .dashboard-badge.up {
            background: rgba(36, 194, 106, 0.12);
            color: var(--primary-hi);
        }
        .dashboard-badge.down {
            background: rgba(255, 92, 53, 0.12);
            color: var(--orange);
        }
        .dashboard-badge.flat {
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-muted);
        }
        .sparkline-bars {
            display: flex;
            align-items: flex-end;
            gap: 3px;
            height: 24px;
            margin-top: 8px;
        }
        .sparkline-bars .bar {
            flex: 1;
            border-radius: 2px;
            background: rgba(36, 194, 106, 0.4);
            min-height: 3px;
        }
        .sparkline-bars .bar:nth-child(1) {
            height: 40%;
        }
        .sparkline-bars .bar:nth-child(2) {
            height: 65%;
        }
        .sparkline-bars .bar:nth-child(3) {
            height: 45%;
        }
        .sparkline-bars .bar:nth-child(4) {
            height: 80%;
        }
        .sparkline-bars .bar:nth-child(5) {
            height: 60%;
        }
        .sparkline-bars .bar:nth-child(6) {
            height: 90%;
        }
        .sparkline-bars .bar:nth-child(7) {
            height: 75%;
        }
        .sparkline-bars .bar:nth-child(8) {
            height: 95%;
        }
        .sparkline-bars .bar.highlight {
            background: var(--primary);
        }
        .service-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .service-card {
            background: var(--bg-750);
            border: 1px solid var(--border-dim);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
            display: flex;
            flex-direction: column;
        }
        .service-card:hover {
            border-color: var(--border-green-strong);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }
        .service-card-img {
            height: 160px;
            overflow: hidden;
            position: relative;
            background-color: var(--bg-700);
        }
        .service-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.3s ease;
        }
        .service-card:hover .service-card-img img {
            transform: scale(1.03);
        }
        .service-card-img::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to bottom, transparent 60%, rgba(11, 15, 13, 0.7));
            pointer-events: none;
        }
        .service-card-body {
            padding: 18px 20px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .service-card-title {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-hi);
            margin-bottom: 6px;
        }
        .service-card-desc {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 12px;
            flex: 1;
        }
        .service-card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 8px;
        }
        .service-badge {
            font-size: 11px;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: var(--radius-badge);
            background: rgba(36, 194, 106, 0.1);
            color: var(--primary);
            border: 1px solid var(--border-green);
        }
        .service-badge.hot {
            background: rgba(255, 92, 53, 0.1);
            color: var(--orange);
            border-color: rgba(255, 92, 53, 0.25);
        }
        .service-link {
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            white-space: nowrap;
        }
        .compare-section {
            background: var(--bg-850);
        }
        .compare-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 16px;
            margin-top: 24px;
        }
        .compare-card {
            background: var(--bg-750);
            border: 1px solid var(--border-dim);
            border-radius: var(--radius-card);
            padding: 24px 20px;
            text-align: center;
            transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
        }
        .compare-card:hover {
            border-color: var(--border-green-strong);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }
        .compare-card.featured {
            border-color: var(--border-green-strong);
            background: rgba(36, 194, 106, 0.08);
        }
        .compare-card-name {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-hi);
            margin-bottom: 8px;
        }
        .compare-card-score {
            font-family: var(--font-mono);
            font-size: 32px;
            font-weight: 700;
            color: var(--amber);
            margin-bottom: 8px;
        }
        .compare-card-score.green {
            color: var(--primary-hi);
        }
        .compare-card-score.orange {
            color: var(--orange);
        }
        .compare-card-desc {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 0;
        }
        .news-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
            margin-top: 24px;
        }
        .news-item {
            background: var(--bg-750);
            border: 1px solid var(--border-dim);
            border-radius: var(--radius-card);
            padding: 20px;
            transition: border-color 0.2s ease, box-shadow 0.2s ease;
        }
        .news-item:hover {
            border-color: var(--border-green-strong);
            box-shadow: var(--shadow-card-hover);
        }
        .news-item-header {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 8px;
            flex-wrap: wrap;
        }
        .news-tag {
            font-size: 11px;
            font-weight: 600;
            padding: 2px 10px;
            border-radius: var(--radius-badge);
            background: rgba(36, 194, 106, 0.1);
            color: var(--primary);
            border: 1px solid var(--border-green);
        }
        .news-tag.amber {
            background: rgba(245, 165, 36, 0.1);
            color: var(--amber);
            border-color: rgba(245, 165, 36, 0.25);
        }
        .news-tag.cyan {
            background: rgba(56, 199, 232, 0.1);
            color: var(--cyan);
            border-color: rgba(56, 199, 232, 0.25);
        }
        .news-date {
            font-size: 12px;
            color: var(--text-muted);
            font-family: var(--font-mono);
        }
        .news-item-title {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-hi);
            margin-bottom: 6px;
            line-height: 1.5;
        }
        .news-item-desc {
            font-size: 13px;
            color: var(--text-main);
            line-height: 1.8;
            margin-bottom: 0;
        }
        .testimonial-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 16px;
            margin-top: 24px;
        }
        .testimonial-card {
            background: var(--bg-750);
            border: 1px solid var(--border-dim);
            border-radius: var(--radius-card);
            padding: 20px;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .testimonial-stars {
            color: var(--amber);
            font-size: 13px;
            letter-spacing: 2px;
        }
        .testimonial-text {
            font-size: 13px;
            color: var(--text-main);
            line-height: 1.8;
            flex: 1;
            margin-bottom: 0;
        }
        .testimonial-author {
            font-size: 12px;
            font-weight: 600;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .testimonial-author .avatar-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--primary);
            flex-shrink: 0;
        }
        .capability-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 14px;
            margin-top: 24px;
        }
        .capability-tag {
            background: var(--bg-750);
            border: 1px solid var(--border-dim);
            border-radius: var(--radius-card);
            padding: 16px 18px;
            transition: border-color 0.2s ease, box-shadow 0.2s ease;
        }
        .capability-tag:hover {
            border-color: var(--border-green-strong);
            box-shadow: var(--shadow-card-hover);
        }
        .capability-tag-name {
            font-size: 14px;
            font-weight: 700;
            color: var(--text-hi);
            margin-bottom: 4px;
        }
        .capability-tag-desc {
            font-size: 12px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 0;
        }
        .brand-story-block {
            background: var(--bg-850);
            border: 1px solid var(--border-dim);
            border-radius: var(--radius-card);
            padding: 32px;
            margin-top: 24px;
        }
        .brand-story-block p {
            margin-bottom: 14px;
            font-size: 14px;
            line-height: 2;
            color: var(--text-main);
        }
        .brand-story-block p:last-child {
            margin-bottom: 0;
        }
        .brand-story-block .highlight-stat {
            display: inline-block;
            font-family: var(--font-mono);
            font-weight: 700;
            color: var(--primary-hi);
            background: rgba(36, 194, 106, 0.08);
            padding: 0 8px;
            border-radius: 4px;
        }
        .faq-list {
            max-width: 780px;
            margin: 24px auto 0;
        }
        .faq-item {
            border: 1px solid var(--border-dim);
            border-radius: var(--radius-card);
            margin-bottom: 12px;
            transition: border-color 0.2s ease, box-shadow 0.2s ease;
            overflow: hidden;
        }
        .faq-item:hover {
            border-color: var(--border-green-strong);
            box-shadow: var(--shadow-card-hover);
        }
        .faq-question {
            width: 100%;
            background: var(--bg-750);
            border: none;
            color: var(--text-hi);
            font-size: 15px;
            font-weight: 600;
            padding: 16px 20px;
            text-align: left;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            transition: background-color 0.2s ease, color 0.2s ease;
        }
        .faq-question:hover {
            background: var(--bg-700);
            color: var(--primary-hi);
        }
        .faq-question .faq-icon {
            font-size: 18px;
            color: var(--primary);
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            background: var(--bg-800);
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
        }
        .faq-answer-inner {
            padding: 16px 20px;
            font-size: 14px;
            color: var(--text-main);
            line-height: 1.8;
        }
        .cta-form-block {
            background: var(--bg-850);
            border-radius: var(--radius-card);
            padding: 36px 32px;
            border: 1px solid var(--border-green);
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
            align-items: center;
        }
        .cta-form-left h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--text-hi);
            margin-bottom: 12px;
        }
        .cta-form-left p {
            font-size: 14px;
            color: var(--text-main);
            line-height: 1.9;
            margin-bottom: 0;
        }
        .cta-value-list {
            list-style: none;
            padding: 0;
            margin: 16px 0 0;
        }
        .cta-value-list li {
            font-size: 13px;
            color: var(--text-main);
            padding-left: 20px;
            position: relative;
            margin-bottom: 8px;
        }
        .cta-value-list li::before {
            content: '✓';
            position: absolute;
            left: 0;
            color: var(--primary);
            font-weight: 700;
        }
        .cta-form-card {
            background: var(--bg-750);
            border: 1px solid var(--border-dim);
            border-radius: var(--radius-card);
            padding: 24px;
        }
        .cta-form-card .form-label {
            font-size: 13px;
            color: var(--text-main);
            font-weight: 500;
            margin-bottom: 4px;
        }
        .cta-form-card .form-control {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: var(--radius-input);
            color: var(--text-hi);
            font-size: 14px;
            padding: 10px 14px;
            transition: border-color 0.2s ease, box-shadow 0.2s ease;
        }
        .cta-form-card .form-control:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(36, 194, 106, 0.2);
            background: rgba(255, 255, 255, 0.08);
            color: var(--text-hi);
        }
        .cta-form-card .form-control::placeholder {
            color: var(--text-muted);
        }
        .cta-submit-btn {
            background: var(--orange);
            border: none;
            color: #fff;
            font-weight: 700;
            font-size: 15px;
            padding: 10px 20px;
            border-radius: var(--radius-btn);
            width: 100%;
            transition: background-color 0.2s ease, box-shadow 0.2s ease, transform 0.15s ease;
        }
        .cta-submit-btn:hover,
        .cta-submit-btn:focus {
            background: #ff6a45;
            color: #fff;
            box-shadow: 0 0 0 3px rgba(255, 92, 53, 0.25);
        }
        .cta-submit-btn:active {
            transform: scale(0.98);
        }
        .cta-privacy-hint {
            font-size: 12px;
            color: var(--text-muted);
            text-align: center;
            margin-top: 10px;
            margin-bottom: 0;
        }
        .site-footer {
            background: var(--bg-900);
            border-top: 1px solid var(--border-dim);
            padding: 48px 0 24px;
            margin-top: 0;
        }
        .footer-col-title {
            font-size: 14px;
            font-weight: 700;
            color: var(--text-hi);
            margin-bottom: 12px;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li {
            margin-bottom: 8px;
        }
        .footer-links a {
            font-size: 13px;
            color: var(--text-muted);
            transition: color 0.2s ease;
        }
        .footer-links a:hover {
            color: var(--primary-hi);
        }
        .footer-bottom {
            border-top: 1px solid var(--border-dim);
            margin-top: 32px;
            padding-top: 16px;
            font-size: 12px;
            color: var(--text-muted);
        }
        .footer-bottom a {
            color: var(--text-muted);
        }
        .footer-bottom a:hover {
            color: var(--primary-hi);
        }
        .footer-risk-hint {
            font-size: 12px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-top: 8px;
        }
        @media (max-width: 992px) {
            .hero-bento-grid {
                grid-template-columns: 1fr;
            }
            .hero-side-stack {
                flex-direction: row;
                flex-wrap: wrap;
            }
            .hero-mini-card {
                flex: 1;
                min-width: 200px;
            }
            .dashboard-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .service-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .compare-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .testimonial-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .capability-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .cta-form-block {
                grid-template-columns: 1fr;
            }
            .news-grid {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 768px) {
            .hero-title {
                font-size: 27px;
            }
            .hero-subtitle {
                font-size: 15px;
            }
            .hero-main-block {
                padding: 20px;
            }
            .hero-side-stack {
                flex-direction: column;
            }
            .hero-mini-card {
                min-width: 100%;
            }
            .hero-cta-strip {
                flex-direction: column;
                align-items: flex-start;
            }
            .dashboard-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 10px;
            }
            .dashboard-card {
                padding: 14px;
            }
            .dashboard-value {
                font-size: 22px;
            }
            .service-grid {
                grid-template-columns: 1fr;
            }
            .compare-grid {
                grid-template-columns: 1fr;
            }
            .testimonial-grid {
                grid-template-columns: 1fr;
            }
            .capability-grid {
                grid-template-columns: 1fr;
            }
            .cta-form-block {
                padding: 20px;
            }
            .cta-form-card {
                padding: 16px;
            }
            .brand-story-block {
                padding: 20px;
            }
            .section-title {
                font-size: 21px;
            }
            .news-item {
                padding: 16px;
            }
        }
        @media (max-width: 520px) {
            .hero-title {
                font-size: 23px;
            }
            .hero-actions {
                flex-direction: column;
            }
            .hero-actions .btn {
                width: 100%;
            }
            .dashboard-grid {
                grid-template-columns: 1fr 1fr;
                gap: 8px;
            }
            .dashboard-value {
                font-size: 18px;
            }
            .dashboard-label {
                font-size: 11px;
            }
            .hero-mini-info .mini-value {
                font-size: 15px;
            }
            .faq-question {
                font-size: 13px;
                padding: 12px 16px;
            }
            .faq-answer-inner {
                padding: 12px 16px;
                font-size: 13px;
            }
        }

/* roulang page: category3 */
:root {
            --bg-900: #0B0F0D;
            --bg-850: #101613;
            --bg-800: #151B17;
            --bg-750: #1A201B;
            --bg-700: #1E251F;
            --primary: #24C26A;
            --primary-hi: #2EE67D;
            --amber: #F5A524;
            --orange: #FF5C35;
            --cyan: #38C7E8;
            --magenta: #E84D8A;
            --text-hi: #F4F7F5;
            --text-main: #C9D1CC;
            --text-muted: #8A9A90;
            --border-dim: rgba(255, 255, 255, 0.08);
            --border-mid: rgba(255, 255, 255, 0.14);
            --border-green: rgba(36, 194, 106, 0.25);
            --border-green-strong: rgba(36, 194, 106, 0.45);
            --radius-card: 10px;
            --radius-btn: 8px;
            --radius-input: 8px;
            --radius-badge: 20px;
            --shadow-card: 0 8px 24px rgba(0, 0, 0, 0.35);
            --shadow-card-hover: 0 12px 32px rgba(36, 194, 106, 0.12);
            --font-mono: 'SF Mono', 'Cascadia Code', 'Consolas', 'Menlo', monospace;
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', 'Segoe UI', system-ui, -apple-system, sans-serif;
            --section-spacing: 80px;
            --section-spacing-mobile: 52px;
            --container-max: 1160px;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-sans);
            background-color: var(--bg-900);
            color: var(--text-main);
            line-height: 1.85;
            font-size: 15px;
            margin: 0;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.2s ease, border-color 0.2s ease, background-color 0.2s ease;
        }

        a:hover {
            color: var(--primary-hi);
        }

        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 4px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        .container-site {
            max-width: var(--container-max);
            margin-left: auto;
            margin-right: auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        @media (min-width: 1400px) {
            .container-site {
                max-width: 1220px;
            }
        }

        @media (max-width: 575.98px) {
            .container-site {
                padding-left: 16px;
                padding-right: 16px;
            }
        }

        .section-block {
            padding-top: var(--section-spacing);
            padding-bottom: var(--section-spacing);
            position: relative;
        }

        @media (max-width: 767.98px) {
            .section-block {
                padding-top: var(--section-spacing-mobile);
                padding-bottom: var(--section-spacing-mobile);
            }
        }

        .section-block-alt {
            background-color: var(--bg-850);
        }

        .section-label {
            display: inline-block;
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            margin-bottom: 8px;
            padding: 3px 10px;
            border-radius: var(--radius-badge);
            background: rgba(36, 194, 106, 0.1);
            border: 1px solid var(--border-green);
        }

        .section-title {
            font-size: 26px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-hi);
        }

        .section-desc {
            font-size: 15px;
            color: var(--text-main);
            max-width: 680px;
            line-height: 1.9;
            margin-bottom: 0;
        }

        /* Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background-color: rgba(11, 15, 13, 0.72);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid transparent;
            transition: background-color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
        }

        .site-header.scrolled {
            background-color: rgba(11, 15, 13, 0.94);
            border-bottom-color: rgba(255, 255, 255, 0.08);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
        }

        .site-header .navbar {
            padding: 12px 0;
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text-hi);
            font-weight: 700;
            font-size: 18px;
            letter-spacing: -0.01em;
            text-decoration: none;
            transition: color 0.2s ease;
        }

        .brand-logo:hover {
            color: var(--primary-hi);
        }

        .brand-logo .logo-mark {
            width: 34px;
            height: 34px;
            border-radius: 6px;
            background: linear-gradient(135deg, var(--primary) 0%, #0E8A4D 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 14px;
            color: #0B0F0D;
            letter-spacing: 0;
            flex-shrink: 0;
        }

        .navbar-nav .nav-link {
            color: var(--text-muted);
            font-size: 14px;
            padding: 8px 12px;
            border-radius: 6px;
            transition: color 0.2s ease, background-color 0.2s ease;
            font-weight: 500;
            letter-spacing: 0.01em;
        }

        .navbar-nav .nav-link:hover {
            color: var(--text-hi);
            background-color: rgba(255, 255, 255, 0.04);
        }

        .navbar-nav .nav-link.active {
            color: var(--primary);
            background-color: rgba(36, 194, 106, 0.08);
            font-weight: 600;
            position: relative;
        }

        .navbar-nav .nav-link.active::after {
            content: '';
            position: absolute;
            left: 12px;
            right: 12px;
            bottom: 2px;
            height: 2px;
            background-color: var(--primary);
            border-radius: 1px;
        }

        .command-search {
            display: flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--border-mid);
            border-radius: var(--radius-input);
            padding: 7px 12px;
            font-size: 13px;
            color: var(--text-muted);
            cursor: pointer;
            transition: border-color 0.2s ease, background-color 0.2s ease;
            min-width: 150px;
            white-space: nowrap;
        }

        .command-search:hover {
            border-color: var(--border-green);
            background-color: rgba(36, 194, 106, 0.06);
        }

        .command-search .kbd-hint {
            margin-left: auto;
            font-size: 11px;
            color: var(--text-muted);
            background-color: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--border-dim);
            border-radius: 4px;
            padding: 1px 5px;
            font-family: var(--font-mono);
        }

        .btn-primary-cta {
            background-color: var(--orange);
            border: none;
            color: #fff;
            font-weight: 600;
            font-size: 13px;
            padding: 8px 16px;
            border-radius: var(--radius-btn);
            transition: background-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
            white-space: nowrap;
        }

        .btn-primary-cta:hover {
            background-color: #ff6b3d;
            color: #fff;
            box-shadow: 0 0 0 3px rgba(255, 92, 53, 0.18);
            transform: translateY(-1px);
        }

        .btn-primary-cta:active {
            transform: scale(0.98);
        }

        .navbar-toggler {
            border: 1px solid var(--border-mid);
            border-radius: 6px;
            padding: 6px 8px;
            background-color: transparent;
        }

        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='%238A9A90' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }

        /* Buttons */
        .btn {
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 14px;
            padding: 10px 20px;
            transition: all 0.2s ease;
        }

        .btn-green {
            background-color: var(--primary);
            border: none;
            color: #0B0F0D;
            font-weight: 700;
        }

        .btn-green:hover {
            background-color: var(--primary-hi);
            color: #0B0F0D;
            box-shadow: 0 0 0 3px rgba(36, 194, 106, 0.2);
            transform: translateY(-1px);
        }

        .btn-green:active {
            transform: scale(0.98);
        }

        .btn-outline-green {
            background: transparent;
            border: 1px solid var(--border-green-strong);
            color: var(--primary);
            font-weight: 600;
        }

        .btn-outline-green:hover {
            background-color: rgba(36, 194, 106, 0.12);
            border-color: var(--primary);
            color: var(--primary-hi);
        }

        .btn-cta-orange {
            background-color: var(--orange);
            border: none;
            color: #fff;
            font-weight: 700;
            font-size: 15px;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
        }

        .btn-cta-orange:hover {
            background-color: #ff6b3d;
            color: #fff;
            box-shadow: 0 0 0 3px rgba(255, 92, 53, 0.2);
            transform: translateY(-1px);
        }

        /* Cards */
        .card-custom {
            background-color: var(--bg-800);
            border: 1px solid var(--border-dim);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
            overflow: hidden;
        }

        .card-custom:hover {
            transform: translateY(-2px);
            border-color: var(--border-green-strong);
            box-shadow: var(--shadow-card-hover);
        }

        /* Badges */
        .badge-custom {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 12px;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: var(--radius-badge);
            line-height: 1.5;
            white-space: nowrap;
        }

        .badge-hot {
            background-color: rgba(255, 92, 53, 0.12);
            color: var(--orange);
            border: 1px solid rgba(255, 92, 53, 0.3);
        }

        .badge-live {
            background-color: rgba(36, 194, 106, 0.12);
            color: var(--primary);
            border: 1px solid var(--border-green);
        }

        .badge-rising {
            background-color: rgba(36, 194, 106, 0.1);
            color: var(--primary-hi);
            border: 1px solid rgba(36, 194, 106, 0.25);
        }

        .badge-stable {
            background-color: rgba(255, 255, 255, 0.06);
            color: var(--text-muted);
            border: 1px solid var(--border-dim);
        }

        .badge-falling {
            background-color: rgba(255, 92, 53, 0.1);
            color: var(--orange);
            border: 1px solid rgba(255, 92, 53, 0.25);
        }

        .badge-amber {
            background-color: rgba(245, 165, 36, 0.12);
            color: var(--amber);
            border: 1px solid rgba(245, 165, 36, 0.3);
        }

        /* Hero */
        .hero-rank {
            position: relative;
            padding: 72px 0 64px;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            overflow: hidden;
        }

        .hero-rank::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(105deg, rgba(11, 15, 13, 0.96) 0%, rgba(11, 15, 13, 0.88) 40%, rgba(11, 15, 13, 0.72) 100%);
            z-index: 1;
        }

        .hero-rank .container-site {
            position: relative;
            z-index: 2;
        }

        .hero-rank h1 {
            font-size: 38px;
            font-weight: 800;
            color: var(--text-hi);
            line-height: 1.25;
            margin-bottom: 16px;
            letter-spacing: -0.01em;
        }

        .hero-rank .hero-subtitle {
            font-size: 17px;
            color: var(--text-main);
            line-height: 1.9;
            max-width: 580px;
            margin-bottom: 24px;
        }

        .hero-rank .hero-buttons {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        .hero-rank .hero-data-card {
            background: rgba(21, 27, 23, 0.82);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--border-green);
            border-radius: var(--radius-card);
            padding: 20px 18px;
            box-shadow: var(--shadow-card);
        }

        .hero-rank .hero-data-card .data-item {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 8px 0;
            border-bottom: 1px solid var(--border-dim);
        }

        .hero-rank .hero-data-card .data-item:last-child {
            border-bottom: none;
        }

        .hero-rank .hero-data-card .data-label {
            font-size: 12px;
            color: var(--text-muted);
        }

        .hero-rank .hero-data-card .data-value {
            font-family: var(--font-mono);
            font-size: 16px;
            font-weight: 600;
            color: var(--text-hi);
        }

        .hero-rank .hero-data-card .data-value.up {
            color: var(--primary);
        }

        .hero-rank .hero-data-card .data-value.down {
            color: var(--orange);
        }

        /* Ranking Section */
        .ranking-section {
            background-color: var(--bg-900);
        }

        .filter-bar {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
            align-items: center;
            margin-bottom: 24px;
            padding: 14px 16px;
            background-color: var(--bg-800);
            border: 1px solid var(--border-dim);
            border-radius: var(--radius-card);
        }

        .filter-bar select,
        .filter-bar input {
            background-color: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--border-mid);
            border-radius: var(--radius-input);
            color: var(--text-main);
            padding: 7px 12px;
            font-size: 13px;
            transition: border-color 0.2s ease;
            min-width: 130px;
        }

        .filter-bar select:focus,
        .filter-bar input:focus {
            border-color: var(--primary);
            outline: none;
            box-shadow: 0 0 0 3px rgba(36, 194, 106, 0.15);
        }

        .filter-bar .filter-label {
            font-size: 12px;
            color: var(--text-muted);
            font-weight: 500;
        }

        .ranking-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .ranking-row {
            display: flex;
            align-items: center;
            gap: 16px;
            background-color: var(--bg-800);
            border: 1px solid var(--border-dim);
            border-radius: var(--radius-card);
            padding: 14px 18px;
            transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
            position: relative;
        }

        .ranking-row:hover {
            border-color: var(--border-green-strong);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }

        .ranking-row.top-1 {
            border-color: rgba(245, 165, 36, 0.4);
            background: linear-gradient(135deg, rgba(245, 165, 36, 0.06) 0%, var(--bg-800) 60%);
        }

        .ranking-row.top-2 {
            border-color: rgba(200, 200, 205, 0.3);
            background: linear-gradient(135deg, rgba(200, 200, 205, 0.05) 0%, var(--bg-800) 60%);
        }

        .ranking-row.top-3 {
            border-color: rgba(232, 77, 138, 0.3);
            background: linear-gradient(135deg, rgba(232, 77, 138, 0.05) 0%, var(--bg-800) 60%);
        }

        .rank-number {
            font-family: var(--font-mono);
            font-size: 26px;
            font-weight: 800;
            min-width: 48px;
            text-align: center;
            color: var(--text-muted);
            flex-shrink: 0;
        }

        .ranking-row.top-1 .rank-number {
            color: var(--amber);
        }

        .ranking-row.top-2 .rank-number {
            color: #C8C8CD;
        }

        .ranking-row.top-3 .rank-number {
            color: var(--magenta);
        }

        .rank-thumb {
            width: 72px;
            height: 48px;
            border-radius: 6px;
            overflow: hidden;
            flex-shrink: 0;
            background-color: var(--bg-700);
        }

        .rank-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .rank-info {
            flex: 1;
            min-width: 0;
        }

        .rank-info h3 {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-hi);
            margin-bottom: 4px;
            line-height: 1.4;
        }

        .rank-info p {
            font-size: 12px;
            color: var(--text-muted);
            margin-bottom: 0;
            line-height: 1.6;
        }

        .rank-score {
            text-align: center;
            flex-shrink: 0;
            min-width: 70px;
        }

        .rank-score .score-value {
            font-family: var(--font-mono);
            font-size: 26px;
            font-weight: 700;
            color: var(--primary);
            display: block;
            line-height: 1.2;
        }

        .rank-score .score-unit {
            font-size: 11px;
            color: var(--text-muted);
        }

        .rank-trend {
            flex-shrink: 0;
            width: 120px;
        }

        .rank-trend .trend-bar {
            height: 6px;
            background-color: rgba(255, 255, 255, 0.08);
            border-radius: 3px;
            overflow: hidden;
            margin-bottom: 4px;
        }

        .rank-trend .trend-fill {
            height: 100%;
            border-radius: 3px;
            background-color: var(--primary);
            transition: width 0.6s ease;
        }

        .rank-trend .trend-fill.falling {
            background-color: var(--orange);
        }

        .rank-trend .trend-fill.stable {
            background-color: var(--text-muted);
        }

        .rank-trend .trend-label {
            font-size: 11px;
            font-weight: 600;
            color: var(--primary);
        }

        .rank-trend .trend-label.falling {
            color: var(--orange);
        }

        .rank-trend .trend-label.stable {
            color: var(--text-muted);
        }

        .rank-badge {
            flex-shrink: 0;
        }

        /* Insight Section */
        .insight-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 18px;
        }

        .insight-card {
            background-color: var(--bg-800);
            border: 1px solid var(--border-dim);
            border-radius: var(--radius-card);
            padding: 22px;
            transition: border-color 0.2s ease, box-shadow 0.2s ease;
        }

        .insight-card:hover {
            border-color: var(--border-green-strong);
            box-shadow: var(--shadow-card-hover);
        }

        .insight-card .insight-icon {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background-color: rgba(36, 194, 106, 0.1);
            border: 1px solid var(--border-green);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 12px;
            font-size: 16px;
            color: var(--primary);
        }

        .insight-card h3 {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-hi);
            margin-bottom: 8px;
        }

        .insight-card p {
            font-size: 13px;
            color: var(--text-main);
            line-height: 1.8;
            margin-bottom: 0;
        }

        /* Service mini */
        .service-mini-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 18px;
        }

        .service-mini-card {
            background-color: var(--bg-800);
            border: 1px solid var(--border-dim);
            border-radius: var(--radius-card);
            padding: 20px;
            display: flex;
            flex-direction: column;
            gap: 8px;
            transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
        }

        .service-mini-card:hover {
            border-color: var(--border-green-strong);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }

        .service-mini-card h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-hi);
            margin-bottom: 4px;
        }

        .service-mini-card p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 0;
        }

        .service-mini-card .service-link {
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
        }

        .service-mini-card .service-link:hover {
            color: var(--primary-hi);
        }

        /* FAQ */
        .faq-accordion .accordion-item {
            background-color: var(--bg-800);
            border: 1px solid var(--border-dim);
            border-radius: var(--radius-card) !important;
            margin-bottom: 10px;
            overflow: hidden;
            transition: border-color 0.2s ease;
        }

        .faq-accordion .accordion-item:hover {
            border-color: rgba(36, 194, 106, 0.3);
        }

        .faq-accordion .accordion-button {
            background-color: transparent;
            color: var(--text-hi);
            font-weight: 600;
            font-size: 14px;
            padding: 16px 18px;
            box-shadow: none;
            border-radius: var(--radius-card) !important;
            transition: color 0.2s ease;
        }

        .faq-accordion .accordion-button:not(.collapsed) {
            color: var(--primary);
            background-color: rgba(36, 194, 106, 0.05);
            box-shadow: none;
        }

        .faq-accordion .accordion-button:focus {
            box-shadow: none;
            border-color: rgba(36, 194, 106, 0.3);
        }

        .faq-accordion .accordion-button::after {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%238A9A90'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
            transition: transform 0.3s ease;
        }

        .faq-accordion .accordion-button:not(.collapsed)::after {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%2324C26A'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
            transform: rotate(180deg);
        }

        .faq-accordion .accordion-body {
            color: var(--text-main);
            font-size: 14px;
            line-height: 1.8;
            padding: 14px 18px 18px;
            background-color: rgba(0, 0, 0, 0.15);
            border-top: 1px solid var(--border-dim);
        }

        /* CTA Form */
        .cta-section {
            background-color: var(--bg-850);
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(36, 194, 106, 0.06) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-card {
            background-color: var(--bg-800);
            border: 1px solid var(--border-green);
            border-radius: var(--radius-card);
            padding: 32px 28px;
            box-shadow: var(--shadow-card);
            position: relative;
            z-index: 1;
        }

        .cta-card .form-control {
            background-color: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--border-mid);
            border-radius: var(--radius-input);
            color: var(--text-hi);
            padding: 10px 14px;
            font-size: 14px;
            transition: border-color 0.2s ease, box-shadow 0.2s ease;
        }

        .cta-card .form-control:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(36, 194, 106, 0.18);
            background-color: rgba(255, 255, 255, 0.08);
        }

        .cta-card .form-control::placeholder {
            color: var(--text-muted);
        }

        .cta-card label {
            font-size: 13px;
            color: var(--text-main);
            font-weight: 600;
            margin-bottom: 6px;
        }

        .cta-value-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .cta-value-list li {
            padding: 10px 0;
            border-bottom: 1px solid var(--border-dim);
            font-size: 13px;
            color: var(--text-main);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .cta-value-list li:last-child {
            border-bottom: none;
        }

        .cta-value-list li::before {
            content: '✓';
            color: var(--primary);
            font-weight: 700;
            flex-shrink: 0;
        }

        .privacy-note {
            font-size: 12px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* Footer */
        .site-footer {
            background-color: var(--bg-900);
            border-top: 1px solid var(--border-dim);
            padding: 48px 0 24px;
        }

        .site-footer .footer-col-title {
            font-size: 13px;
            font-weight: 700;
            color: var(--text-hi);
            margin-bottom: 14px;
            letter-spacing: 0.03em;
        }

        .site-footer .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .site-footer .footer-links li {
            margin-bottom: 8px;
        }

        .site-footer .footer-links a {
            color: var(--text-muted);
            font-size: 13px;
            transition: color 0.2s ease;
        }

        .site-footer .footer-links a:hover {
            color: var(--primary);
        }

        .site-footer .footer-bottom {
            margin-top: 32px;
            padding-top: 16px;
            border-top: 1px solid var(--border-dim);
            font-size: 12px;
            color: var(--text-muted);
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            align-items: center;
            justify-content: space-between;
        }

        .site-footer .footer-bottom a {
            color: var(--text-muted);
            font-size: 12px;
        }

        .site-footer .footer-bottom a:hover {
            color: var(--primary);
        }

        .site-footer .risk-note {
            font-size: 12px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-top: 8px;
        }

        /* Responsive */
        @media (max-width: 991.98px) {
            .hero-rank h1 {
                font-size: 30px;
            }
            .hero-rank .hero-data-card {
                margin-top: 24px;
            }
            .command-search {
                display: none;
            }
            .rank-trend {
                width: 90px;
            }
        }

        @media (max-width: 767.98px) {
            .hero-rank {
                padding: 48px 0 40px;
            }
            .hero-rank h1 {
                font-size: 26px;
            }
            .hero-rank .hero-subtitle {
                font-size: 15px;
            }
            .section-title {
                font-size: 22px;
            }
            .ranking-row {
                flex-wrap: wrap;
                gap: 10px;
                padding: 12px 14px;
            }
            .rank-number {
                font-size: 22px;
                min-width: 36px;
            }
            .rank-thumb {
                width: 56px;
                height: 40px;
            }
            .rank-score {
                min-width: 56px;
            }
            .rank-score .score-value {
                font-size: 20px;
            }
            .rank-trend {
                width: 100%;
                order: 5;
            }
            .rank-badge {
                margin-left: auto;
            }
            .filter-bar {
                flex-direction: column;
                align-items: stretch;
            }
            .filter-bar select,
            .filter-bar input {
                width: 100%;
                min-width: auto;
            }
            .cta-card {
                padding: 20px 16px;
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
        }

        @media (max-width: 575.98px) {
            .hero-rank h1 {
                font-size: 24px;
            }
            .hero-rank .hero-buttons .btn {
                width: 100%;
                text-align: center;
            }
            .rank-info h3 {
                font-size: 14px;
            }
            .rank-score .score-value {
                font-size: 18px;
            }
            .rank-number {
                font-size: 20px;
                min-width: 30px;
            }
            .section-block {
                padding-top: 44px;
                padding-bottom: 44px;
            }
        }

/* roulang page: category4 */
:root {
            --bg-900: #0B0F0D;
            --bg-850: #101613;
            --bg-800: #151B17;
            --bg-750: #1A201B;
            --bg-700: #1E251F;
            --primary: #24C26A;
            --primary-hi: #2EE67D;
            --amber: #F5A524;
            --orange: #FF5C35;
            --cyan: #38C7E8;
            --magenta: #E84D8A;
            --text-hi: #F4F7F5;
            --text-main: #C9D1CC;
            --text-muted: #8A9A90;
            --border-dim: rgba(255, 255, 255, 0.08);
            --border-mid: rgba(255, 255, 255, 0.14);
            --border-green: rgba(36, 194, 106, 0.25);
            --border-green-strong: rgba(36, 194, 106, 0.45);
            --radius-card: 10px;
            --radius-btn: 8px;
            --radius-input: 8px;
            --radius-badge: 20px;
            --shadow-card: 0 8px 24px rgba(0, 0, 0, 0.35);
            --shadow-card-hover: 0 12px 32px rgba(36, 194, 106, 0.12);
            --font-mono: 'SF Mono', 'Cascadia Code', 'Consolas', 'Menlo', monospace;
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', 'Segoe UI', system-ui, -apple-system, sans-serif;
            --section-spacing: 72px;
            --section-spacing-mobile: 48px;
            --container-max: 1160px;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-sans);
            background-color: var(--bg-900);
            color: var(--text-main);
            line-height: 1.85;
            font-size: 15px;
            margin: 0;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.2s ease, border-color 0.2s ease, background-color 0.2s ease;
        }
        a:hover {
            color: var(--primary-hi);
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 4px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        .container-site {
            max-width: var(--container-max);
            margin-left: auto;
            margin-right: auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        .section-block {
            padding-top: var(--section-spacing);
            padding-bottom: var(--section-spacing);
            position: relative;
        }
        .section-block-alt {
            background-color: var(--bg-850);
        }

        .section-label {
            display: inline-block;
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            margin-bottom: 8px;
            padding: 3px 10px;
            border-radius: var(--radius-badge);
            background: rgba(36, 194, 106, 0.1);
            border: 1px solid var(--border-green);
        }
        .section-title {
            font-size: 26px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-hi);
        }
        .section-desc {
            font-size: 15px;
            color: var(--text-main);
            max-width: 680px;
            line-height: 1.9;
            margin-bottom: 0;
        }

        /* Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background-color: rgba(11, 15, 13, 0.72);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid transparent;
            transition: background-color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
        }
        .site-header.scrolled {
            background-color: rgba(11, 15, 13, 0.94);
            border-bottom-color: rgba(255, 255, 255, 0.08);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
        }
        .site-header .navbar {
            padding: 12px 0;
        }
        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text-hi);
            font-weight: 700;
            font-size: 18px;
            letter-spacing: -0.01em;
            text-decoration: none;
            transition: color 0.2s ease;
        }
        .brand-logo:hover {
            color: var(--primary-hi);
        }
        .brand-logo .logo-mark {
            width: 34px;
            height: 34px;
            border-radius: 6px;
            background: linear-gradient(135deg, var(--primary) 0%, #0E8A4D 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 14px;
            color: #0B0F0D;
            letter-spacing: 0;
            flex-shrink: 0;
        }

        .navbar-nav .nav-link {
            color: var(--text-muted);
            font-size: 14px;
            padding: 8px 12px;
            border-radius: 6px;
            transition: color 0.2s ease, background-color 0.2s ease;
            font-weight: 500;
            letter-spacing: 0.01em;
        }
        .navbar-nav .nav-link:hover {
            color: var(--text-hi);
            background-color: rgba(255, 255, 255, 0.04);
        }
        .navbar-nav .nav-link.active {
            color: var(--primary);
            background-color: rgba(36, 194, 106, 0.08);
        }

        .command-search {
            display: flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--border-green);
            border-radius: var(--radius-btn);
            padding: 8px 14px;
            color: var(--text-muted);
            font-size: 13px;
            cursor: pointer;
            transition: border-color 0.2s ease, background-color 0.2s ease;
            min-width: 160px;
        }
        .command-search:hover {
            border-color: var(--primary);
            background-color: rgba(36, 194, 106, 0.08);
        }
        .command-search .kbd-hint {
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid var(--border-dim);
            border-radius: 4px;
            padding: 1px 6px;
            font-size: 11px;
            font-family: var(--font-mono);
            color: var(--text-muted);
            margin-left: auto;
        }

        .btn-primary-cta {
            background: var(--orange);
            color: #fff;
            border: none;
            border-radius: var(--radius-btn);
            padding: 9px 20px;
            font-size: 14px;
            font-weight: 600;
            transition: background-color 0.2s ease, box-shadow 0.2s ease, transform 0.15s ease;
            white-space: nowrap;
        }
        .btn-primary-cta:hover {
            background: #ff6e47;
            color: #fff;
            box-shadow: 0 0 18px rgba(255, 92, 53, 0.35);
        }
        .btn-primary-cta:active {
            transform: scale(0.98);
        }

        .navbar-toggler {
            border: 1px solid var(--border-mid);
            border-radius: 6px;
            padding: 6px 10px;
            background: transparent;
        }
        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(201, 209, 204, 0.8)' stroke-width='2' stroke-linecap='round' stroke-miterlimit='10' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
            width: 24px;
            height: 24px;
        }

        /* Hero */
        .hero-intel {
            position: relative;
            padding: 70px 0 56px;
            background: linear-gradient(135deg, rgba(11,15,13,0.95) 0%, rgba(16,22,19,0.88) 50%, rgba(11,15,13,0.95) 100%);
            border-bottom: 1px solid var(--border-dim);
            overflow: hidden;
        }
        .hero-intel::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.18;
            z-index: 0;
        }
        .hero-intel .container-site {
            position: relative;
            z-index: 1;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(36, 194, 106, 0.12);
            border: 1px solid var(--border-green);
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
            padding: 5px 14px;
            border-radius: var(--radius-badge);
            margin-bottom: 16px;
        }
        .hero-intel h1 {
            font-size: 38px;
            font-weight: 800;
            color: var(--text-hi);
            margin-bottom: 14px;
            line-height: 1.35;
            letter-spacing: -0.02em;
        }
        .hero-intel .hero-desc {
            font-size: 17px;
            color: var(--text-main);
            max-width: 720px;
            line-height: 1.9;
            margin-bottom: 24px;
        }
        .hero-metrics {
            display: flex;
            gap: 28px;
            flex-wrap: wrap;
            margin-top: 20px;
        }
        .hero-metric-item {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }
        .hero-metric-value {
            font-family: var(--font-mono);
            font-size: 26px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
        }
        .hero-metric-label {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* Featured Article */
        .featured-article {
            background: var(--bg-850);
            border: 1px solid var(--border-dim);
            border-radius: var(--radius-card);
            overflow: hidden;
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 0;
            transition: border-color 0.3s ease, box-shadow 0.3s ease;
        }
        .featured-article:hover {
            border-color: var(--border-green);
            box-shadow: var(--shadow-card-hover);
        }
        .featured-article-img {
            min-height: 340px;
            background-size: cover;
            background-position: center;
            position: relative;
        }
        .featured-article-img::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(180deg, rgba(11,15,13,0.05) 0%, rgba(11,15,13,0.55) 100%);
        }
        .featured-article-body {
            padding: 36px 32px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .featured-article-tag {
            display: inline-block;
            background: rgba(245, 165, 36, 0.12);
            border: 1px solid rgba(245, 165, 36, 0.3);
            color: var(--amber);
            font-size: 11px;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: var(--radius-badge);
            margin-bottom: 12px;
            width: fit-content;
        }
        .featured-article-body h2 {
            font-size: 22px;
            font-weight: 700;
            color: var(--text-hi);
            margin-bottom: 12px;
            line-height: 1.5;
        }
        .featured-article-body p {
            font-size: 14px;
            color: var(--text-main);
            line-height: 1.8;
            margin-bottom: 16px;
        }
        .featured-article-meta {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            font-size: 12px;
            color: var(--text-muted);
        }
        .featured-article-meta span {
            display: flex;
            align-items: center;
            gap: 5px;
        }

        /* Article Stream */
        .article-stream-item {
            display: grid;
            grid-template-columns: 220px 1fr;
            gap: 24px;
            background: var(--bg-850);
            border: 1px solid var(--border-dim);
            border-radius: var(--radius-card);
            padding: 20px;
            transition: border-color 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease;
            margin-bottom: 16px;
        }
        .article-stream-item:hover {
            border-color: var(--border-green);
            transform: translateY(-2px);
            box-shadow: var(--shadow-card-hover);
        }
        .article-stream-thumb {
            width: 220px;
            height: 150px;
            background-size: cover;
            background-position: center;
            border-radius: 8px;
            flex-shrink: 0;
            position: relative;
            overflow: hidden;
        }
        .article-stream-body {
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .article-stream-tags {
            display: flex;
            gap: 6px;
            flex-wrap: wrap;
            margin-bottom: 8px;
        }
        .tag-badge {
            display: inline-block;
            font-size: 11px;
            font-weight: 500;
            padding: 2px 8px;
            border-radius: var(--radius-badge);
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border-dim);
            color: var(--text-muted);
        }
        .tag-badge.green {
            background: rgba(36, 194, 106, 0.1);
            border-color: var(--border-green);
            color: var(--primary);
        }
        .tag-badge.amber {
            background: rgba(245, 165, 36, 0.1);
            border-color: rgba(245, 165, 36, 0.3);
            color: var(--amber);
        }
        .article-stream-body h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-hi);
            margin-bottom: 6px;
            line-height: 1.5;
        }
        .article-stream-body .excerpt {
            font-size: 13px;
            color: var(--text-main);
            line-height: 1.8;
            margin-bottom: 10px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .article-stream-body .data-points {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            font-size: 12px;
            color: var(--text-muted);
        }
        .data-point {
            display: flex;
            align-items: center;
            gap: 5px;
        }
        .data-point .num {
            font-family: var(--font-mono);
            font-weight: 600;
            color: var(--primary);
        }
        .data-point .num.amber {
            color: var(--amber);
        }

        /* Insight Dimensions */
        .dimension-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 20px;
        }
        .dimension-card {
            background: var(--bg-850);
            border: 1px solid var(--border-dim);
            border-radius: var(--radius-card);
            padding: 22px;
            transition: border-color 0.3s ease, box-shadow 0.3s ease;
        }
        .dimension-card:hover {
            border-color: var(--border-green);
            box-shadow: var(--shadow-card-hover);
        }
        .dimension-icon {
            width: 38px;
            height: 38px;
            border-radius: 8px;
            background: rgba(36, 194, 106, 0.12);
            border: 1px solid var(--border-green);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            margin-bottom: 12px;
            color: var(--primary);
        }
        .dimension-card h3 {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-hi);
            margin-bottom: 8px;
        }
        .dimension-card p {
            font-size: 13px;
            color: var(--text-main);
            line-height: 1.75;
            margin-bottom: 0;
        }

        /* Data Strip */
        .data-strip {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 14px;
        }
        .data-strip-item {
            background: var(--bg-850);
            border: 1px solid var(--border-dim);
            border-radius: var(--radius-card);
            padding: 18px 16px;
            text-align: center;
            transition: border-color 0.3s ease;
        }
        .data-strip-item:hover {
            border-color: var(--border-green);
        }
        .data-strip-value {
            font-family: var(--font-mono);
            font-size: 24px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.3;
        }
        .data-strip-value.amber {
            color: var(--amber);
        }
        .data-strip-label {
            font-size: 11px;
            color: var(--text-muted);
            margin-top: 4px;
        }

        /* FAQ */
        .accordion-item {
            background: var(--bg-850);
            border: 1px solid var(--border-dim);
            border-radius: var(--radius-card) !important;
            margin-bottom: 10px;
            overflow: hidden;
            transition: border-color 0.3s ease;
        }
        .accordion-item:hover {
            border-color: var(--border-green);
        }
        .accordion-button {
            background: transparent;
            color: var(--text-hi);
            font-size: 15px;
            font-weight: 600;
            padding: 16px 20px;
            border: none;
            box-shadow: none;
            transition: color 0.2s ease, background-color 0.2s ease;
        }
        .accordion-button:hover {
            color: var(--primary);
        }
        .accordion-button:not(.collapsed) {
            background: rgba(36, 194, 106, 0.08);
            color: var(--primary);
            box-shadow: none;
        }
        .accordion-button::after {
            filter: invert(70%) sepia(12%) saturate(200%) hue-rotate(90deg);
        }
        .accordion-body {
            font-size: 14px;
            color: var(--text-main);
            line-height: 1.8;
            padding: 14px 20px 18px;
            background: rgba(11, 15, 13, 0.5);
        }

        /* CTA Form */
        .cta-section {
            background: var(--bg-850);
            border-radius: var(--radius-card);
            overflow: hidden;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 0;
        }
        .cta-info {
            padding: 36px 32px;
            background: linear-gradient(135deg, rgba(36, 194, 106, 0.08) 0%, rgba(11, 15, 13, 0.9) 100%);
        }
        .cta-info h2 {
            font-size: 22px;
            font-weight: 700;
            color: var(--text-hi);
            margin-bottom: 12px;
        }
        .cta-info p {
            font-size: 14px;
            color: var(--text-main);
            line-height: 1.8;
            margin-bottom: 16px;
        }
        .cta-benefits {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .cta-benefits li {
            font-size: 13px;
            color: var(--text-main);
            padding: 5px 0;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .cta-benefits li::before {
            content: '✓';
            color: var(--primary);
            font-weight: 700;
            font-size: 14px;
        }
        .cta-form {
            padding: 36px 32px;
            background: var(--bg-750);
        }
        .cta-form .form-label {
            color: var(--text-main);
            font-size: 13px;
            font-weight: 500;
            margin-bottom: 6px;
        }
        .cta-form .form-control {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.15);
            color: var(--text-hi);
            border-radius: var(--radius-input);
            padding: 10px 14px;
            font-size: 14px;
            transition: border-color 0.2s ease, box-shadow 0.2s ease;
        }
        .cta-form .form-control:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(36, 194, 106, 0.2);
            background: rgba(255, 255, 255, 0.08);
        }
        .cta-form .btn-submit {
            width: 100%;
            background: var(--orange);
            color: #fff;
            border: none;
            border-radius: var(--radius-btn);
            padding: 11px 20px;
            font-size: 15px;
            font-weight: 600;
            transition: background-color 0.2s ease, box-shadow 0.2s ease, transform 0.15s ease;
        }
        .cta-form .btn-submit:hover {
            background: #ff6e47;
            box-shadow: 0 0 18px rgba(255, 92, 53, 0.3);
        }
        .cta-form .btn-submit:active {
            transform: scale(0.98);
        }
        .privacy-note {
            font-size: 11px;
            color: var(--text-muted);
            margin-top: 10px;
            text-align: center;
        }

        /* Footer */
        .site-footer {
            background: var(--bg-900);
            border-top: 1px solid var(--border-dim);
            padding-top: 48px;
            padding-bottom: 24px;
            margin-top: 0;
        }
        .footer-col-title {
            font-size: 13px;
            font-weight: 700;
            color: var(--text-hi);
            margin-bottom: 14px;
            letter-spacing: 0.02em;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li {
            margin-bottom: 8px;
        }
        .footer-links a {
            color: var(--text-muted);
            font-size: 13px;
            transition: color 0.2s ease;
        }
        .footer-links a:hover {
            color: var(--primary);
        }
        .footer-bottom {
            margin-top: 36px;
            padding-top: 18px;
            border-top: 1px solid var(--border-dim);
            font-size: 12px;
            color: var(--text-muted);
            line-height: 1.7;
        }
        .footer-bottom a {
            color: var(--text-muted);
            font-size: 12px;
        }
        .footer-bottom a:hover {
            color: var(--primary);
        }

        /* Responsive */
        @media (max-width: 991px) {
            .hero-intel h1 {
                font-size: 30px;
            }
            .featured-article {
                grid-template-columns: 1fr;
            }
            .featured-article-img {
                min-height: 220px;
            }
            .article-stream-item {
                grid-template-columns: 1fr;
            }
            .article-stream-thumb {
                width: 100%;
                height: 180px;
            }
            .cta-section {
                grid-template-columns: 1fr;
            }
            .command-search {
                display: none;
            }
            .navbar-collapse {
                background: rgba(11, 15, 13, 0.98);
                border-radius: 10px;
                padding: 16px;
                margin-top: 8px;
                border: 1px solid var(--border-dim);
            }
        }
        @media (max-width: 767px) {
            .section-block {
                padding-top: var(--section-spacing-mobile);
                padding-bottom: var(--section-spacing-mobile);
            }
            .hero-intel {
                padding: 48px 0 40px;
            }
            .hero-intel h1 {
                font-size: 26px;
            }
            .hero-intel .hero-desc {
                font-size: 15px;
            }
            .section-title {
                font-size: 22px;
            }
            .hero-metrics {
                gap: 18px;
            }
            .featured-article-body {
                padding: 24px 18px;
            }
            .article-stream-item {
                padding: 16px;
            }
            .cta-info,
            .cta-form {
                padding: 24px 18px;
            }
            .data-strip {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .container-site {
                padding-left: 14px;
                padding-right: 14px;
            }
            .hero-intel h1 {
                font-size: 23px;
            }
            .article-stream-thumb {
                height: 150px;
            }
        }

/* roulang page: category6 */
:root {
  --bg-900: #0B0F0D;
  --bg-850: #101613;
  --bg-800: #151B17;
  --bg-750: #1A201B;
  --bg-700: #1E251F;
  --primary: #24C26A;
  --primary-hi: #2EE67D;
  --amber: #F5A524;
  --orange: #FF5C35;
  --cyan: #38C7E8;
  --magenta: #E84D8A;
  --text-hi: #F4F7F5;
  --text-main: #C9D1CC;
  --text-muted: #8A9A90;
  --border-dim: rgba(255, 255, 255, 0.08);
  --border-mid: rgba(255, 255, 255, 0.14);
  --border-green: rgba(36, 194, 106, 0.25);
  --border-green-strong: rgba(36, 194, 106, 0.45);
  --radius-card: 10px;
  --radius-btn: 8px;
  --radius-input: 8px;
  --radius-badge: 20px;
  --shadow-card: 0 8px 24px rgba(0, 0, 0, 0.35);
  --shadow-card-hover: 0 12px 32px rgba(36, 194, 106, 0.12);
  --font-mono: 'SF Mono', 'Cascadia Code', 'Consolas', 'Menlo', monospace;
  --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', 'Segoe UI', system-ui, -apple-system, sans-serif;
  --section-spacing: 80px;
  --section-spacing-mobile: 52px;
  --container-max: 1160px;
}
html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}
body {
  font-family: var(--font-sans);
  background-color: var(--bg-900);
  color: var(--text-main);
  line-height: 1.85;
  font-size: 15px;
  margin: 0;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
a {
  color: var(--primary);
  text-decoration: none;
  transition: color 0.2s ease, border-color 0.2s ease, background-color 0.2s ease;
}
a:hover {
  color: var(--primary-hi);
}
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
  border-radius: 4px;
}
img {
  max-width: 100%;
  height: auto;
  display: block;
}
.container-site {
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}
.container-site {
  max-width: 1220px;
}
@media (max-width: 768px) {
  .container-site {
    padding-left: 16px;
    padding-right: 16px;
  }
}
.section-block {
  padding-top: var(--section-spacing);
  padding-bottom: var(--section-spacing);
  position: relative;
}
@media (max-width: 768px) {
  .section-block {
    padding-top: var(--section-spacing-mobile);
    padding-bottom: var(--section-spacing-mobile);
  }
}
.section-block-alt {
  background-color: var(--bg-850);
}
.section-label {
  display: inline-block;
  color: var(--primary);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 8px;
  padding: 3px 10px;
  border-radius: var(--radius-badge);
  background: rgba(36, 194, 106, 0.1);
  border: 1px solid var(--border-green);
}
.section-title {
  font-size: 26px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text-hi);
}
.section-desc {
  font-size: 15px;
  color: var(--text-main);
  max-width: 680px;
  line-height: 1.9;
  margin-bottom: 0;
}
.site-header {
  position: sticky;
  top: 0;
  z-index: 1050;
  background-color: rgba(11, 15, 13, 0.72);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  transition: background-color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}
.site-header.scrolled {
  background-color: rgba(11, 15, 13, 0.94);
  border-bottom-color: rgba(255, 255, 255, 0.08);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}
.site-header .navbar {
  padding: 12px 0;
}
.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-hi);
  font-weight: 700;
  font-size: 18px;
  letter-spacing: -0.01em;
  text-decoration: none;
  transition: color 0.2s ease;
}
.brand-logo:hover {
  color: var(--primary-hi);
}
.brand-logo .logo-mark {
  width: 34px;
  height: 34px;
  border-radius: 6px;
  background: linear-gradient(135deg, var(--primary) 0%, #0E8A4D 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 14px;
  color: #0B0F0D;
  letter-spacing: 0;
  flex-shrink: 0;
}
.navbar-nav .nav-link {
  color: var(--text-muted);
  font-size: 14px;
  padding: 8px 12px;
  border-radius: 6px;
  transition: color 0.2s ease, background-color 0.2s ease;
  font-weight: 500;
  letter-spacing: 0.01em;
}
.navbar-nav .nav-link:hover {
  color: var(--text-hi);
  background-color: rgba(255, 255, 255, 0.06);
}
.navbar-nav .nav-link.active {
  color: var(--primary-hi);
  font-weight: 600;
}
.navbar-nav .nav-link.active::after {
  content: '';
  display: block;
  width: 20px;
  height: 2px;
  background: var(--primary);
  margin-top: 4px;
  border-radius: 2px;
}
.command-search {
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--border-green);
  border-radius: 6px;
  padding: 6px 12px;
  color: var(--text-muted);
  font-size: 13px;
  cursor: pointer;
  transition: border-color 0.2s ease, background-color 0.2s ease;
  min-width: 140px;
}
.command-search:hover {
  border-color: var(--primary);
  background-color: rgba(36, 194, 106, 0.08);
}
.kbd-hint {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
  background: rgba(255, 255, 255, 0.1);
  border-radius: 4px;
  padding: 1px 6px;
  margin-left: auto;
}
.btn-primary-cta {
  background-color: var(--orange);
  color: #fff;
  border: none;
  border-radius: var(--radius-btn);
  padding: 8px 18px;
  font-weight: 600;
  font-size: 14px;
  transition: background-color 0.2s ease, box-shadow 0.2s ease, transform 0.15s ease;
  text-decoration: none;
  display: inline-block;
}
.btn-primary-cta:hover {
  background-color: #ff6b45;
  color: #fff;
  box-shadow: 0 0 12px rgba(255, 92, 53, 0.35);
}
.btn-primary-cta:active {
  transform: scale(0.98);
}
.btn-outline-green {
  background: transparent;
  border: 1px solid var(--primary);
  color: var(--primary);
  border-radius: var(--radius-btn);
  padding: 8px 18px;
  font-weight: 600;
  font-size: 14px;
  transition: background-color 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
  text-decoration: none;
  display: inline-block;
}
.btn-outline-green:hover {
  background-color: rgba(36, 194, 106, 0.12);
  color: var(--primary-hi);
}
.navbar-toggler {
  border: 1px solid var(--border-mid);
  border-radius: 6px;
  padding: 6px 10px;
}
.navbar-toggler-icon {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(36, 194, 106, 0.8)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}
@media (max-width: 991px) {
  .command-search {
    display: none;
  }
  .navbar-collapse {
    background-color: rgba(11, 15, 13, 0.96);
    border-radius: 8px;
    padding: 16px;
    margin-top: 8px;
    border: 1px solid var(--border-dim);
  }
  .navbar-nav .nav-link.active::after {
    display: none;
  }
}
.hero-compare {
  position: relative;
  padding: 64px 0 56px;
  background-color: var(--bg-900);
  overflow: hidden;
}
.hero-compare::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 80% 20%, rgba(36, 194, 106, 0.12) 0%, transparent 55%),
              radial-gradient(ellipse at 20% 80%, rgba(245, 165, 36, 0.08) 0%, transparent 45%);
  pointer-events: none;
}
.hero-compare .hero-content {
  position: relative;
  z-index: 1;
}
.hero-compare h1 {
  font-size: 38px;
  font-weight: 800;
  color: var(--text-hi);
  line-height: 1.3;
  margin-bottom: 16px;
  letter-spacing: -0.01em;
}
.hero-compare h1 .accent {
  color: var(--primary-hi);
}
.hero-compare .hero-sub {
  font-size: 17px;
  color: var(--text-main);
  line-height: 1.9;
  max-width: 720px;
  margin-bottom: 24px;
}
.hero-compare .compare-hero-badge {
  display: inline-block;
  background: rgba(36, 194, 106, 0.12);
  border: 1px solid var(--border-green);
  color: var(--primary);
  font-size: 12px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: var(--radius-badge);
  margin-bottom: 14px;
  letter-spacing: 0.03em;
}
.compare-selector-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  background: var(--bg-850);
  border: 1px solid var(--border-dim);
  border-radius: var(--radius-card);
  padding: 16px 20px;
  margin-bottom: 32px;
}
.compare-selector-bar .selector-label {
  color: var(--text-muted);
  font-size: 13px;
  font-weight: 500;
  white-space: nowrap;
}
.compare-selector-bar .selector-option {
  background: var(--bg-700);
  border: 1px solid var(--border-mid);
  border-radius: 6px;
  padding: 8px 16px;
  color: var(--text-main);
  font-size: 13px;
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
}
.compare-selector-bar .selector-option.active {
  border-color: var(--primary);
  color: var(--primary-hi);
  background: rgba(36, 194, 106, 0.1);
  font-weight: 600;
}
.compare-selector-bar .selector-option:hover {
  border-color: var(--primary);
  color: var(--text-hi);
}
.compare-selector-bar .selector-sep {
  color: var(--text-muted);
  font-size: 14px;
  padding: 0 4px;
}
.compare-cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
@media (max-width: 991px) {
  .compare-cards-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 767px) {
  .compare-cards-grid {
    grid-template-columns: 1fr;
  }
}
.compare-card {
  background: var(--bg-850);
  border: 1px solid var(--border-dim);
  border-radius: var(--radius-card);
  padding: 24px 20px;
  box-shadow: var(--shadow-card);
  transition: border-color 0.25s ease, box-shadow 0.25s ease, transform 0.25s ease;
  position: relative;
}
.compare-card:hover {
  border-color: var(--border-green-strong);
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-2px);
}
.compare-card.highlight {
  border-color: var(--primary);
  box-shadow: 0 0 20px rgba(36, 194, 106, 0.15);
}
.compare-card .compare-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}
.compare-card .compare-card-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-hi);
}
.compare-card .compare-card-badge {
  background: rgba(36, 194, 106, 0.12);
  color: var(--primary);
  font-size: 11px;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: var(--radius-badge);
  border: 1px solid var(--border-green);
}
.compare-card .compare-metric {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 0;
  border-bottom: 1px solid var(--border-dim);
}
.compare-card .compare-metric:last-of-type {
  border-bottom: none;
}
.compare-card .metric-name {
  color: var(--text-muted);
  font-size: 13px;
}
.compare-card .metric-value {
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 600;
  color: var(--text-hi);
}
.compare-card .metric-value.trend-up {
  color: var(--primary-hi);
}
.compare-card .metric-value.trend-down {
  color: var(--orange);
}
.compare-card .metric-value.trend-flat {
  color: var(--text-muted);
}
.compare-card .metric-value.amber {
  color: var(--amber);
}
.compare-card .card-cover {
  height: 140px;
  background-size: cover;
  background-position: center;
  border-radius: 6px;
  margin-bottom: 16px;
  position: relative;
  overflow: hidden;
}
.compare-card .card-cover::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 30%, rgba(11, 15, 13, 0.85) 100%);
}
.detail-compare-table {
  background: var(--bg-850);
  border: 1px solid var(--border-dim);
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}
.detail-compare-table .compare-table-head {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  background: var(--bg-700);
  padding: 14px 20px;
  border-bottom: 1px solid var(--border-dim);
}
.detail-compare-table .compare-table-head span {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-hi);
  text-align: center;
}
.detail-compare-table .compare-table-head span:first-child {
  text-align: left;
}
.compare-table-row {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  padding: 14px 20px;
  border-bottom: 1px solid var(--border-dim);
  transition: background-color 0.2s ease;
}
.compare-table-row:hover {
  background-color: rgba(36, 194, 106, 0.04);
}
.compare-table-row:last-child {
  border-bottom: none;
}
.compare-table-row .row-label {
  color: var(--text-main);
  font-size: 14px;
  font-weight: 500;
}
.compare-table-row .row-value {
  text-align: center;
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--text-hi);
  font-weight: 600;
}
.compare-table-row .row-value.green {
  color: var(--primary-hi);
}
.compare-table-row .row-value.amber {
  color: var(--amber);
}
.compare-table-row .row-value.red {
  color: var(--orange);
}
@media (max-width: 767px) {
  .detail-compare-table .compare-table-head,
  .compare-table-row {
    grid-template-columns: 1.2fr 1fr 1fr;
  }
  .detail-compare-table .compare-table-head span:nth-child(4),
  .compare-table-row .row-value:nth-child(4) {
    display: none;
  }
}
.faq-accordion .accordion-item {
  background: var(--bg-850);
  border: 1px solid var(--border-dim);
  border-radius: var(--radius-card) !important;
  margin-bottom: 12px;
  overflow: hidden;
  transition: border-color 0.25s ease;
}
.faq-accordion .accordion-item:hover {
  border-color: var(--border-green);
}
.faq-accordion .accordion-button {
  background: transparent;
  color: var(--text-hi);
  font-size: 15px;
  font-weight: 600;
  padding: 18px 20px;
  box-shadow: none;
  border-radius: var(--radius-card) !important;
}
.faq-accordion .accordion-button:not(.collapsed) {
  background: rgba(36, 194, 106, 0.06);
  color: var(--primary-hi);
  box-shadow: none;
}
.faq-accordion .accordion-button::after {
  filter: invert(60%) sepia(60%) saturate(400%) hue-rotate(90deg);
}
.faq-accordion .accordion-button:focus {
  box-shadow: 0 0 0 2px rgba(36, 194, 106, 0.3);
}
.faq-accordion .accordion-body {
  background: rgba(11, 15, 13, 0.5);
  color: var(--text-main);
  font-size: 14px;
  line-height: 1.8;
  padding: 16px 20px;
}
.cta-section {
  background: linear-gradient(135deg, var(--bg-850) 0%, var(--bg-800) 60%, var(--bg-750) 100%);
  border: 1px solid var(--border-green);
  border-radius: var(--radius-card);
  padding: 40px 36px;
  box-shadow: var(--shadow-card);
}
.cta-section .cta-title {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-hi);
  margin-bottom: 8px;
}
.cta-section .cta-desc {
  color: var(--text-main);
  font-size: 15px;
  line-height: 1.8;
  margin-bottom: 20px;
}
.cta-section .form-control {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-input);
  color: var(--text-hi);
  padding: 10px 14px;
  font-size: 14px;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.cta-section .form-control::placeholder {
  color: var(--text-muted);
}
.cta-section .form-control:focus {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(36, 194, 106, 0.2);
  color: var(--text-hi);
}
.cta-section .btn-submit {
  background: var(--orange);
  color: #fff;
  border: none;
  border-radius: var(--radius-btn);
  padding: 10px 24px;
  font-weight: 600;
  font-size: 15px;
  transition: background-color 0.2s ease, box-shadow 0.2s ease, transform 0.15s ease;
  width: 100%;
}
.cta-section .btn-submit:hover {
  background-color: #ff6b45;
  box-shadow: 0 0 16px rgba(255, 92, 53, 0.4);
}
.cta-section .btn-submit:active {
  transform: scale(0.98);
}
.cta-section .privacy-note {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 10px;
}
.site-footer {
  background-color: var(--bg-850);
  border-top: 1px solid var(--border-dim);
  padding: 48px 0 24px;
}
.site-footer .footer-col-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-hi);
  margin-bottom: 14px;
  letter-spacing: 0.02em;
}
.site-footer .footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}
.site-footer .footer-links li {
  margin-bottom: 8px;
}
.site-footer .footer-links a {
  color: var(--text-muted);
  font-size: 13px;
  transition: color 0.2s ease;
}
.site-footer .footer-links a:hover {
  color: var(--primary-hi);
}
.site-footer .footer-bottom {
  border-top: 1px solid var(--border-dim);
  padding-top: 18px;
  margin-top: 28px;
  font-size: 12px;
  color: var(--text-muted);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 10px;
}
.site-footer .footer-bottom a {
  color: var(--text-muted);
  font-size: 12px;
}
.site-footer .footer-bottom a:hover {
  color: var(--primary-hi);
}
.risk-disclaimer {
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.7;
  border-top: 1px solid var(--border-dim);
  padding-top: 14px;
  margin-top: 14px;
}
.section-number {
  font-family: var(--font-mono);
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.04em;
  display: inline-block;
  margin-bottom: 6px;
}
.mini-trend-bar {
  display: flex;
  align-items: flex-end;
  gap: 2px;
  height: 24px;
  margin-top: 8px;
}
.mini-trend-bar span {
  width: 6px;
  background: var(--primary);
  border-radius: 2px;
  display: block;
}
.mini-trend-bar span.dim {
  background: var(--border-mid);
}
.mini-trend-bar span.amber {
  background: var(--amber);
}
@media (max-width: 767px) {
  .hero-compare h1 {
    font-size: 28px;
  }
  .hero-compare .hero-sub {
    font-size: 15px;
  }
  .section-title {
    font-size: 22px;
  }
  .compare-cards-grid {
    grid-template-columns: 1fr;
  }
  .compare-selector-bar {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* roulang page: category5 */
:root {
  --bg-900: #0B0F0D;
  --bg-850: #101613;
  --bg-800: #151B17;
  --bg-750: #1A201B;
  --bg-700: #1E251F;
  --primary: #24C26A;
  --primary-hi: #2EE67D;
  --amber: #F5A524;
  --orange: #FF5C35;
  --cyan: #38C7E8;
  --magenta: #E84D8A;
  --text-hi: #F4F7F5;
  --text-main: #C9D1CC;
  --text-muted: #8A9A90;
  --border-dim: rgba(255, 255, 255, 0.08);
  --border-mid: rgba(255, 255, 255, 0.14);
  --border-green: rgba(36, 194, 106, 0.25);
  --border-green-strong: rgba(36, 194, 106, 0.45);
  --radius-card: 10px;
  --radius-btn: 8px;
  --radius-input: 8px;
  --radius-badge: 20px;
  --shadow-card: 0 8px 24px rgba(0, 0, 0, 0.35);
  --shadow-card-hover: 0 12px 32px rgba(36, 194, 106, 0.12);
  --font-mono: 'SF Mono', 'Cascadia Code', 'Consolas', 'Menlo', monospace;
  --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', 'Segoe UI', system-ui, -apple-system, sans-serif;
  --section-spacing: 80px;
  --section-spacing-mobile: 52px;
  --container-max: 1160px;
}
html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}
body {
  font-family: var(--font-sans);
  background-color: var(--bg-900);
  color: var(--text-main);
  line-height: 1.85;
  font-size: 15px;
  margin: 0;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
a {
  color: var(--primary);
  text-decoration: none;
  transition: color 0.2s ease, border-color 0.2s ease, background-color 0.2s ease;
}
a:hover {
  color: var(--primary-hi);
}
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
  border-radius: 4px;
}
img {
  max-width: 100%;
  height: auto;
  display: block;
}
.container-site {
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}
.section-block {
  padding-top: var(--section-spacing);
  padding-bottom: var(--section-spacing);
  position: relative;
}
.section-block-alt {
  background-color: var(--bg-850);
}
.section-label {
  display: inline-block;
  color: var(--primary);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 8px;
  padding: 3px 10px;
  border-radius: var(--radius-badge);
  background: rgba(36, 194, 106, 0.1);
  border: 1px solid var(--border-green);
}
.section-title {
  font-size: 26px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text-hi);
}
.section-desc {
  font-size: 15px;
  color: var(--text-main);
  max-width: 680px;
  line-height: 1.9;
  margin-bottom: 0;
}
.site-header {
  position: sticky;
  top: 0;
  z-index: 1050;
  background-color: rgba(11, 15, 13, 0.72);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  transition: background-color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}
.site-header.scrolled {
  background-color: rgba(11, 15, 13, 0.94);
  border-bottom-color: rgba(255, 255, 255, 0.08);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}
.site-header .navbar {
  padding: 12px 0;
}
.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-hi);
  font-weight: 700;
  font-size: 18px;
  letter-spacing: -0.01em;
  text-decoration: none;
  transition: color 0.2s ease;
}
.brand-logo:hover {
  color: var(--primary-hi);
}
.brand-logo .logo-mark {
  width: 34px;
  height: 34px;
  border-radius: 6px;
  background: linear-gradient(135deg, var(--primary) 0%, #0E8A4D 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 14px;
  color: #0B0F0D;
  letter-spacing: 0;
  flex-shrink: 0;
}
.navbar-nav .nav-link {
  color: var(--text-muted);
  font-size: 14px;
  padding: 8px 12px;
  border-radius: 6px;
  transition: color 0.2s ease, background-color 0.2s ease;
  font-weight: 500;
  letter-spacing: 0.01em;
}
.navbar-nav .nav-link:hover {
  color: var(--text-hi);
  background-color: rgba(255,255,255,0.04);
}
.navbar-nav .nav-link.active {
  color: var(--primary);
  background-color: rgba(36,194,106,0.08);
}
.command-search {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border: 1px solid var(--border-green);
  border-radius: var(--radius-input);
  background: rgba(255,255,255,0.06);
  color: var(--text-muted);
  font-size: 13px;
  cursor: text;
  transition: border-color 0.2s ease, background-color 0.2s ease;
  min-width: 160px;
}
.command-search:hover {
  border-color: var(--border-green-strong);
  background: rgba(255,255,255,0.08);
}
.command-search .kbd-hint {
  font-size: 11px;
  padding: 1px 6px;
  border-radius: 4px;
  background: rgba(255,255,255,0.08);
  border: 1px solid var(--border-mid);
  color: var(--text-muted);
  margin-left: auto;
}
.btn-primary-cta {
  background-color: var(--primal);
  color: #0B0F0D;
  font-weight: 600;
  font-size: 14px;
  padding: 8px 18px;
  border-radius: var(--radius-btn);
  border: 1px solid var(--primary);
  transition: background-color 0.2s ease, box-shadow 0.2s ease, transform 0.1s ease;
  white-space: nowrap;
}
.btn-primary-cta:hover,
.btn-primary-cta:focus {
  background-color: var(--primary-hi);
  color: #0B0F0D;
  box-shadow: 0 0 0 2px rgba(36,194,106,0.3);
}
.btn-primary-cta:active {
  transform: scale(0.98);
}
.navbar-toggler {
  border: 1px solid var(--border-mid);
  padding: 6px 10px;
  border-radius: 6px;
}
.navbar-toggler:focus {
  box-shadow: 0 0 0 2px rgba(36,194,106,0.3);
}
.navbar-toggler-icon {
  background-image: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 2px;
  background-color: var(--text-hi);
  position: relative;
  border-radius: 2px;
}
.navbar-toggler-icon::before,
.navbar-toggler-icon::after {
  content: '';
  position: absolute;
  left: 0;
  width: 24px;
  height: 2px;
  background-color: var(--text-hi);
  border-radius: 2px;
  transition: transform 0.2s ease;
}
.navbar-toggler-icon::before {
  top: -7px;
}
.navbar-toggler-icon::after {
  top: 7px;
}
.btn-outline-green {
  background-color: transparent;
  color: var(--primary);
  border: 1px solid var(--primary);
  font-weight: 600;
  font-size: 14px;
  padding: 10px 20px;
  border-radius: var(--radius-btn);
  transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}
.btn-outline-green:hover,
.btn-outline-green:focus {
  background-color: rgba(36,194,106,0.12);
  border-color: var(--primary-hi);
  color: var(--primary-hi);
}
.btn-orange-cta {
  background-color: var(--orange);
  color: #FFFFFF;
  font-weight: 600;
  font-size: 14px;
  padding: 10px 22px;
  border-radius: var(--radius-btn);
  border: 1px solid var(--orange);
  transition: background-color 0.2s ease, box-shadow 0.2s ease, transform 0.1s ease;
  white-space: nowrap;
}
.btn-orange-cta:hover,
.btn-orange-cta:focus {
  background-color: #E94A22;
  border-color: #E94A22;
  color: #FFFFFF;
  box-shadow: 0 0 0 2px rgba(255,92,53,0.3);
}
.btn-orange-cta:active {
  transform: scale(0.98);
}

/* Tool Hero */
.tool-hero {
  position: relative;
  background-color: var(--bg-850);
  background-image: linear-gradient(160deg, rgba(11,15,13,0.9) 40%, rgba(36,194,106,0.06) 100%), url('/assets/images/backpic/back-3.webp');
  background-size: cover;
  background-position: center;
  padding: 56px 0 72px;
  border-bottom: 1px solid var(--border-dim);
}
.tool-hero .badge-kicker {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(36,194,106,0.1);
  border: 1px solid var(--border-green);
  color: var(--primary);
  font-size: 12px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: var(--radius-badge);
  letter-spacing: 0.06em;
}
.tool-hero h1 {
  font-size: 36px;
  font-weight: 800;
  color: var(--text-hi);
  margin: 12px 0 10px;
  letter-spacing: -0.02em;
}
.tool-hero .hero-desc {
  font-size: 17px;
  color: var(--text-main);
  max-width: 640px;
  line-height: 1.9;
}
.tool-hero .hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 22px;
}

/* Tool Calculator Panel */
.tool-calculator {
  background-color: var(--bg-800);
  border: 1px solid var(--border-green);
  border-radius: var(--radius-card);
  overflow: hidden;
  margin-top: -48px;
  position: relative;
  z-index: 10;
  box-shadow: var(--shadow-card);
}
.tool-calculator .calc-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  background: var(--bg-700);
  border-bottom: 1px solid var(--border-dim);
}
.tool-calculator .calc-header h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-hi);
  margin: 0;
}
.tool-calculator .calc-body {
  display: flex;
  flex-wrap: wrap;
}
.calc-inputs {
  flex: 1 1 55%;
  padding: 24px;
  min-width: 280px;
}
.calc-output {
  flex: 1 1 40%;
  padding: 24px;
  background: var(--bg-850);
  border-left: 1px solid var(--border-dim);
  min-width: 260px;
}
.calc-group {
  margin-bottom: 20px;
}
.calc-group label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 6px;
}
.calc-group select,
.calc-group input[type="text"] {
  width: 100%;
  padding: 10px 12px;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--border-mid);
  border-radius: var(--radius-input);
  color: var(--text-hi);
  font-size: 14px;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.calc-group select:focus,
.calc-group input[type="text"]:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(36,194,106,0.2);
  outline: none;
}
.calc-group select option {
  background: var(--bg-800);
  color: var(--text-hi);
}
.range-group {
  display: flex;
  align-items: center;
  gap: 12px;
}
.range-slider {
  flex: 1;
  -webkit-appearance: none;
  appearance: none;
  height: 6px;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--primary) 0%, rgba(36,194,106,0.3) 50%, var(--border-mid) 50%);
  outline: none;
  cursor: pointer;
}
.range-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--primary);
  border: 3px solid #0B0F0D;
  box-shadow: 0 0 6px rgba(36,194,106,0.5);
  cursor: pointer;
  transition: background 0.2s ease, box-shadow 0.2s ease;
}
.range-slider::-webkit-slider-thumb:hover {
  background: var(--primary-hi);
  box-shadow: 0 0 10px rgba(46,230,125,0.6);
}
.range-slider::-moz-range-thumb {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--primary);
  border: 3px solid #0B0F0D;
  box-shadow: 0 0 6px rgba(36,194,106,0.5);
  cursor: pointer;
}
.range-value {
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 600;
  color: var(--primary);
  min-width: 40px;
  text-align: right;
}
.radio-group {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.radio-group .form-check {
  margin: 0;
  padding: 0;
}
.radio-group .form-check-input {
  display: none;
}
.radio-group .form-check-label {
  display: inline-block;
  padding: 6px 14px;
  border: 1px solid var(--border-mid);
  border-radius: var(--radius-btn);
  color: var(--text-muted);
  font-size: 13px;
  cursor: pointer;
  transition: border-color 0.2s ease, background-color 0.2s ease, color 0.2s ease;
  user-select: none;
}
.radio-group .form-check-input:checked + .form-check-label {
  border-color: var(--primary);
  background: rgba(36,194,106,0.12);
  color: var(--primary);
}
.radio-group .form-check-label:hover {
  border-color: var(--border-green-strong);
}
.calc-output .result-card {
  background: var(--bg-900);
  border: 1px solid var(--border-green);
  border-radius: var(--radius-card);
  padding: 20px;
  margin-bottom: 16px;
}
.calc-output .result-card .result-label {
  font-size: 12px;
  color: var(--text-muted);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-weight: 600;
}
.calc-output .result-card .result-value {
  font-family: var(--font-mono);
  font-size: 28px;
  font-weight: 700;
  color: var(--primary);
  margin: 4px 0 2px;
}
.calc-output .result-card .result-sub {
  font-size: 13px;
  color: var(--text-muted);
}
.result-metrics {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 12px;
}
.result-metric-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  background: var(--bg-800);
  border-radius: 8px;
  border-left: 3px solid var(--primary);
}
.result-metric-item .metric-name {
  font-size: 13px;
  color: var(--text-main);
}
.result-metric-item .metric-value {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 600;
  color: var(--text-hi);
}

/* Feature Cards */
.feature-card {
  background: var(--bg-800);
  border: 1px solid var(--border-dim);
  border-radius: var(--radius-card);
  padding: 22px;
  height: 100%;
  transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}
.feature-card:hover {
  border-color: var(--border-green);
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-2px);
}
.feature-card .feature-icon {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  background: rgba(36,194,106,0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: var(--primary);
  margin-bottom: 12px;
  flex-shrink: 0;
}
.feature-card h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-hi);
  margin-bottom: 6px;
}
.feature-card p {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.8;
  margin-bottom: 0;
}

/* Steps */
.step-item {
  position: relative;
  padding-left: 44px;
  padding-bottom: 28px;
}
.step-item:last-child {
  padding-bottom: 0;
}
.step-item::before {
  content: '';
  position: absolute;
  left: 16px;
  top: 40px;
  bottom: 0;
  width: 1px;
  background: var(--border-mid);
}
.step-item:last-child::before {
  display: none;
}
.step-number {
  position: absolute;
  left: 0;
  top: 0;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary) 0%, #0E8A4D 100%);
  color: #0B0F0D;
  font-weight: 700;
  font-size: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2;
}
.step-item h4 {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-hi);
  margin: 0 0 4px;
}
.step-item p {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.8;
  margin: 0;
}

/* Data Strip */
.data-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  margin-top: 24px;
}
.data-strip-item {
  background: var(--bg-800);
  border: 1px solid var(--border-dim);
  border-top: 3px solid var(--primary);
  border-radius: 8px;
  padding: 16px;
  text-align: center;
}
.data-strip-item .strip-value {
  font-family: var(--font-mono);
  font-size: 24px;
  font-weight: 700;
  color: var(--text-hi);
  line-height: 1.3;
}
.data-strip-item .strip-label {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 4px;
}

/* FAQ */
.accordion-custom .accordion-item {
  background: var(--bg-800);
  border: 1px solid var(--border-dim);
  border-radius: 8px !important;
  margin-bottom: 12px;
  overflow: hidden;
  transition: border-color 0.2s ease;
}
.accordion-custom .accordion-item:hover {
  border-color: var(--border-green);
}
.accordion-custom .accordion-header {
  margin: 0;
}
.accordion-custom .accordion-button {
  background: transparent;
  color: var(--text-hi);
  font-size: 14px;
  font-weight: 600;
  padding: 16px 20px;
  border-radius: 8px !important;
  box-shadow: none !important;
  transition: color 0.2s ease;
}
.accordion-custom .accordion-button:hover {
  color: var(--primary);
}
.accordion-custom .accordion-button:not(.collapsed) {
  background: rgba(36,194,106,0.06);
  color: var(--primary);
  box-shadow: none;
}
.accordion-custom .accordion-button::after {
  background-image: none;
  content: '+';
  font-size: 18px;
  font-weight: 400;
  transition: transform 0.2s ease;
  width: 20px;
  text-align: center;
}
.accordion-custom .accordion-button:not(.collapsed)::after {
  content: '×';
  transform: rotate(0deg);
}
.accordion-custom .accordion-body {
  font-size: 14px;
  color: var(--text-main);
  line-height: 1.85;
  padding: 16px 20px;
  background: var(--bg-850);
}

/* CTA Section */
.cta-panel {
  background: var(--bg-850);
  border: 1px solid var(--border-green);
  border-radius: var(--radius-card);
  padding: 32px;
  position: relative;
  overflow: hidden;
}
.cta-panel::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 220px;
  height: 220px;
  background: radial-gradient(circle, rgba(36,194,106,0.12) 0%, transparent 70%);
  pointer-events: none;
}
.cta-panel h2 {
  font-size: 22px;
  font-weight: 700;
  color: var(--text-hi);
  margin-bottom: 8px;
}
.cta-panel p {
  font-size: 15px;
  color: var(--text-main);
  line-height: 1.8;
  max-width: 520px;
}
.form-input {
  width: 100%;
  padding: 11px 14px;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--border-mid);
  border-radius: var(--radius-input);
  color: var(--text-hi);
  font-size: 14px;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.form-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(36,194,106,0.2);
  outline: none;
}
.form-input::placeholder {
  color: var(--text-muted);
}
.privacy-note {
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.6;
  margin-top: 10px;
}

/* Footer */
.site-footer {
  background-color: var(--bg-900);
  border-top: 1px solid var(--border-dim);
  padding: 48px 0 24px;
  color: var(--text-muted);
}
.footer-col-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-hi);
  margin-bottom: 14px;
  letter-spacing: 0.04em;
}
.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}
.footer-links li {
  margin-bottom: 8px;
}
.footer-links a {
  font-size: 13px;
  color: var(--text-muted);
  transition: color 0.2s ease;
}
.footer-links a:hover {
  color: var(--primary);
}
.footer-bottom {
  border-top: 1px solid var(--border-dim);
  margin-top: 32px;
  padding-top: 20px;
  font-size: 12px;
  color: var(--text-muted);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
}
.footer-bottom a {
  color: var(--text-muted);
  font-size: 12px;
}
.footer-bottom a:hover {
  color: var(--primary);
}
.risk-tip {
  font-size: 12px;
  color: var(--text-muted);
  background: rgba(36,194,106,0.06);
  border-left: 3px solid var(--amber);
  padding: 10px 14px;
  border-radius: 0 8px 8px 0;
  margin-top: 14px;
  line-height: 1.7;
}

/* Responsive */
@media (max-width: 991px) {
  .navbar-nav {
    padding-top: 12px;
  }
  .command-search {
    min-width: 120px;
  }
  .calc-output {
    border-left: none;
    border-top: 1px solid var(--border-dim);
  }
  .data-strip {
    grid-template-columns: repeat(2, 1fr);
  }
  .tool-hero h1 {
    font-size: 30px;
  }
}
@media (max-width: 767px) {
  .container-site {
    padding-left: 16px;
    padding-right: 16px;
  }
  .section-block {
    padding-top: var(--section-spacing-mobile);
    padding-bottom: var(--section-spacing-mobile);
  }
  .tool-hero {
    padding: 40px 0 56px;
  }
  .tool-hero h1 {
    font-size: 24px;
  }
  .tool-hero .hero-desc {
    font-size: 15px;
  }
  .tool-calculator {
    margin-top: -36px;
  }
  .calc-inputs,
  .calc-output {
    padding: 16px;
  }
  .calc-output {
    border-left: none;
    border-top: 1px solid var(--border-dim);
  }
  .result-metric-item {
    padding: 8px 10px;
  }
  .data-strip {
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
  }
  .data-strip-item .strip-value {
    font-size: 20px;
  }
  .cta-panel {
    padding: 22px 16px;
  }
  .section-title {
    font-size: 20px;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
  .feature-card {
    padding: 16px;
  }
  .result-metric-item .metric-value {
    font-size: 13px;
  }
}
@media (max-width: 520px) {
  .data-strip {
    grid-template-columns: 1fr 1fr;
  }
  .tool-hero h1 {
    font-size: 21px;
  }
  .btn-orange-cta,
  .btn-primary-cta {
    font-size: 13px;
    padding: 8px 14px;
  }
  .calc-output .result-card .result-value {
    font-size: 22px;
  }
  .navbar-brand span:last-child {
    font-size: 15px;
  }
}

/* roulang page: category7 */
:root {
            --bg-900: #0B0F0D;
            --bg-850: #101613;
            --bg-800: #151B17;
            --bg-750: #1A201B;
            --bg-700: #1E251F;
            --primary: #24C26A;
            --primary-hi: #2EE67D;
            --amber: #F5A524;
            --orange: #FF5C35;
            --cyan: #38C7E8;
            --magenta: #E84D8A;
            --text-hi: #F4F7F5;
            --text-main: #C9D1CC;
            --text-muted: #8A9A90;
            --border-dim: rgba(255, 255, 255, 0.08);
            --border-mid: rgba(255, 255, 255, 0.14);
            --border-green: rgba(36, 194, 106, 0.25);
            --border-green-strong: rgba(36, 194, 106, 0.45);
            --radius-card: 10px;
            --radius-btn: 8px;
            --radius-input: 8px;
            --radius-badge: 20px;
            --shadow-card: 0 8px 24px rgba(0, 0, 0, 0.35);
            --shadow-card-hover: 0 12px 32px rgba(36, 194, 106, 0.12);
            --font-mono: 'SF Mono', 'Cascadia Code', 'Consolas', 'Menlo', monospace;
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', 'Segoe UI', system-ui, -apple-system, sans-serif;
            --section-spacing: 80px;
            --section-spacing-mobile: 52px;
            --container-max: 1160px;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-sans);
            background-color: var(--bg-900);
            color: var(--text-main);
            line-height: 1.85;
            font-size: 15px;
            margin: 0;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.2s ease, border-color 0.2s ease, background-color 0.2s ease;
        }
        a:hover {
            color: var(--primary-hi);
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 4px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        .container-site {
            max-width: var(--container-max);
            margin-left: auto;
            margin-right: auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        .section-block {
            padding-top: var(--section-spacing);
            padding-bottom: var(--section-spacing);
            position: relative;
        }
        .section-block-alt {
            background-color: var(--bg-850);
        }
        .section-label {
            display: inline-block;
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            margin-bottom: 8px;
            padding: 3px 10px;
            border-radius: var(--radius-badge);
            background: rgba(36, 194, 106, 0.1);
            border: 1px solid var(--border-green);
        }
        .section-title {
            font-size: 26px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-hi);
        }
        .section-desc {
            font-size: 15px;
            color: var(--text-main);
            max-width: 680px;
            line-height: 1.9;
            margin-bottom: 0;
        }

        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background-color: rgba(11, 15, 13, 0.72);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid transparent;
            transition: background-color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
        }
        .site-header.scrolled {
            background-color: rgba(11, 15, 13, 0.94);
            border-bottom-color: rgba(255, 255, 255, 0.08);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
        }
        .site-header .navbar {
            padding: 12px 0;
        }
        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text-hi);
            font-weight: 700;
            font-size: 18px;
            letter-spacing: -0.01em;
            text-decoration: none;
            transition: color 0.2s ease;
        }
        .brand-logo:hover {
            color: var(--primary-hi);
        }
        .brand-logo .logo-mark {
            width: 34px;
            height: 34px;
            border-radius: 6px;
            background: linear-gradient(135deg, var(--primary) 0%, #0E8A4D 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 14px;
            color: #0B0F0D;
            letter-spacing: 0;
            flex-shrink: 0;
        }
        .navbar-nav .nav-link {
            color: var(--text-muted);
            font-size: 14px;
            padding: 8px 12px;
            border-radius: 6px;
            transition: color 0.2s ease, background-color 0.2s ease;
            font-weight: 500;
            letter-spacing: 0.01em;
        }
        .navbar-nav .nav-link:hover {
            color: var(--text-hi);
            background-color: rgba(255, 255, 255, 0.04);
        }
        .navbar-nav .nav-link.active {
            color: var(--primary);
            background-color: rgba(36, 194, 106, 0.08);
            position: relative;
        }
        .navbar-nav .nav-link.active::after {
            content: '';
            position: absolute;
            left: 12px;
            right: 12px;
            bottom: 2px;
            height: 2px;
            background-color: var(--primary);
            border-radius: 2px;
        }
        .command-search {
            display: flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid var(--border-green);
            border-radius: var(--radius-btn);
            padding: 7px 14px;
            color: var(--text-muted);
            font-size: 13px;
            cursor: text;
            transition: border-color 0.2s ease, background-color 0.2s ease;
            min-width: 150px;
        }
        .command-search:hover {
            border-color: var(--border-green-strong);
            background: rgba(255, 255, 255, 0.1);
        }
        .kbd-hint {
            background: rgba(255, 255, 255, 0.1);
            border-radius: 4px;
            padding: 1px 6px;
            font-size: 11px;
            font-family: var(--font-mono);
            color: var(--text-muted);
        }

        .btn-primary-cta {
            background-color: var(--orange);
            color: #fff;
            border: none;
            font-weight: 600;
            font-size: 14px;
            padding: 8px 18px;
            border-radius: var(--radius-btn);
            transition: background-color 0.2s ease, box-shadow 0.2s ease, transform 0.15s ease;
        }
        .btn-primary-cta:hover {
            background-color: #ff6f4a;
            color: #fff;
            box-shadow: 0 0 0 4px rgba(255, 92, 53, 0.15);
        }
        .btn-primary-cta:active {
            transform: scale(0.98);
        }
        .btn-primary-cta:focus-visible {
            outline: 2px solid var(--orange);
            outline-offset: 2px;
        }

        .btn-main {
            background-color: var(--primary);
            color: #0B0F0D;
            border: none;
            font-weight: 700;
            font-size: 15px;
            padding: 12px 24px;
            border-radius: var(--radius-btn);
            transition: background-color 0.2s ease, box-shadow 0.2s ease, transform 0.15s ease;
        }
        .btn-main:hover {
            background-color: var(--primary-hi);
            color: #0B0F0D;
            box-shadow: 0 0 0 4px rgba(36, 194, 106, 0.15);
        }
        .btn-main:active {
            transform: scale(0.98);
        }
        .btn-ghost {
            background: transparent;
            color: var(--primary);
            border: 1px solid var(--border-green-strong);
            font-weight: 600;
            font-size: 15px;
            padding: 12px 24px;
            border-radius: var(--radius-btn);
            transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
        }
        .btn-ghost:hover {
            background-color: rgba(36, 194, 106, 0.12);
            color: var(--primary-hi);
            border-color: var(--primary);
        }

        /* Banner */
        .topic-banner {
            position: relative;
            min-height: 520px;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            display: flex;
            align-items: center;
            overflow: hidden;
        }
        .topic-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(11, 15, 13, 0.9) 0%, rgba(11, 15, 13, 0.75) 40%, rgba(11, 15, 13, 0.55) 100%);
            z-index: 1;
        }
        .topic-banner .banner-content {
            position: relative;
            z-index: 2;
            padding: 80px 0;
        }
        .banner-badge {
            display: inline-block;
            background: rgba(36, 194, 106, 0.15);
            border: 1px solid var(--border-green);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: var(--radius-badge);
            margin-bottom: 16px;
        }
        .banner-h1 {
            font-size: 38px;
            font-weight: 800;
            color: var(--text-hi);
            margin-bottom: 16px;
            line-height: 1.3;
            letter-spacing: -0.01em;
        }
        .banner-sub {
            font-size: 17px;
            color: var(--text-main);
            max-width: 620px;
            line-height: 1.9;
            margin-bottom: 28px;
        }
        .banner-actions {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }
        .banner-stats {
            display: flex;
            gap: 20px;
            margin-top: 32px;
            flex-wrap: wrap;
        }
        .banner-stat-item {
            background: rgba(11, 15, 13, 0.65);
            border: 1px solid var(--border-green);
            border-radius: var(--radius-card);
            padding: 14px 20px;
            min-width: 130px;
        }
        .banner-stat-num {
            font-size: 26px;
            font-weight: 700;
            color: var(--primary-hi);
            font-family: var(--font-mono);
        }
        .banner-stat-label {
            font-size: 12px;
            color: var(--text-muted);
            margin-top: 2px;
        }

        /* Sub Topic Grid */
        .subtopic-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 16px;
        }
        .subtopic-card {
            background: var(--bg-800);
            border: 1px solid var(--border-dim);
            border-radius: var(--radius-card);
            padding: 20px;
            transition: border-color 0.25s ease, box-shadow 0.25s ease, transform 0.2s ease;
            display: flex;
            align-items: flex-start;
            gap: 14px;
            text-decoration: none;
            color: var(--text-main);
        }
        .subtopic-card:hover {
            border-color: var(--border-green-strong);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
            color: var(--text-hi);
        }
        .subtopic-icon {
            width: 44px;
            height: 44px;
            border-radius: 8px;
            background: rgba(36, 194, 106, 0.12);
            border: 1px solid var(--border-green);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 18px;
            color: var(--primary);
            flex-shrink: 0;
        }
        .subtopic-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-hi);
            margin-bottom: 4px;
        }
        .subtopic-desc {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* Featured Cards */
        .featured-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }
        .featured-card {
            background: var(--bg-800);
            border: 1px solid var(--border-dim);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: border-color 0.25s ease, box-shadow 0.25s ease, transform 0.2s ease;
        }
        .featured-card:hover {
            border-color: var(--border-green-strong);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
        }
        .featured-img {
            height: 210px;
            overflow: hidden;
            background-color: var(--bg-700);
            position: relative;
        }
        .featured-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.3s ease;
        }
        .featured-card:hover .featured-img img {
            transform: scale(1.03);
        }
        .featured-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            background: rgba(11, 15, 13, 0.8);
            backdrop-filter: blur(8px);
            border: 1px solid var(--border-green);
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: var(--radius-badge);
        }
        .featured-body {
            padding: 20px;
        }
        .featured-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-hi);
            margin-bottom: 8px;
        }
        .featured-summary {
            font-size: 14px;
            color: var(--text-main);
            line-height: 1.8;
            margin-bottom: 14px;
        }
        .featured-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
        }
        .featured-stat {
            display: flex;
            align-items: center;
            gap: 5px;
            font-size: 13px;
            color: var(--text-muted);
        }
        .featured-stat .stat-num {
            font-family: var(--font-mono);
            font-weight: 600;
            color: var(--primary);
        }
        .featured-stat .stat-num.amber {
            color: var(--amber);
        }
        .featured-stat .stat-num.cyan {
            color: var(--cyan);
        }

        /* Data Strip */
        .data-strip-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 14px;
        }
        .data-strip-card {
            background: var(--bg-800);
            border: 1px solid var(--border-dim);
            border-top: 2px solid var(--primary);
            border-radius: var(--radius-card);
            padding: 18px;
            transition: border-color 0.25s ease, box-shadow 0.25s ease;
        }
        .data-strip-card:hover {
            border-color: var(--border-green-strong);
            box-shadow: var(--shadow-card);
        }
        .data-strip-num {
            font-size: 30px;
            font-weight: 700;
            font-family: var(--font-mono);
            color: var(--text-hi);
            margin-bottom: 4px;
        }
        .data-strip-num.green {
            color: var(--primary);
        }
        .data-strip-num.amber {
            color: var(--amber);
        }
        .data-strip-num.cyan {
            color: var(--cyan);
        }
        .data-strip-label {
            font-size: 13px;
            color: var(--text-muted);
        }
        .data-strip-trend {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 12px;
            font-weight: 600;
            padding: 2px 8px;
            border-radius: var(--radius-badge);
        }
        .trend-up {
            color: var(--primary);
            background: rgba(36, 194, 106, 0.1);
        }
        .trend-down {
            color: var(--orange);
            background: rgba(255, 92, 53, 0.1);
        }
        .trend-flat {
            color: var(--text-muted);
            background: rgba(255, 255, 255, 0.06);
        }

        /* Reading Section */
        .reading-list {
            display: flex;
            flex-direction: column;
            gap: 0;
        }
        .reading-item {
            display: grid;
            grid-template-columns: 1fr 220px;
            gap: 20px;
            padding: 22px 0;
            border-bottom: 1px solid var(--border-dim);
            transition: background-color 0.2s ease;
        }
        .reading-item:first-child {
            border-top: 1px solid var(--border-dim);
        }
        .reading-item:hover {
            background-color: rgba(255, 255, 255, 0.02);
        }
        .reading-content h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-hi);
            margin-bottom: 6px;
        }
        .reading-content p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.8;
            margin-bottom: 0;
        }
        .reading-img {
            height: 130px;
            border-radius: 8px;
            overflow: hidden;
            background-color: var(--bg-700);
        }
        .reading-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        /* FAQ */
        .faq-list {
            max-width: 820px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-800);
            border: 1px solid var(--border-dim);
            border-radius: var(--radius-card);
            margin-bottom: 12px;
            overflow: hidden;
            transition: border-color 0.3s ease;
        }
        .faq-item:hover {
            border-color: var(--border-green);
        }
        .faq-item.open {
            border-color: var(--border-green-strong);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 20px;
            cursor: pointer;
            user-select: none;
            transition: color 0.2s ease;
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question-text {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-hi);
            margin: 0;
        }
        .faq-question:hover .faq-question-text {
            color: var(--primary);
        }
        .faq-icon {
            width: 22px;
            height: 22px;
            flex-shrink: 0;
            transition: transform 0.3s ease;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 18px;
            font-weight: 700;
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
        }
        .faq-answer {
            padding: 0 20px 18px;
            font-size: 14px;
            color: var(--text-main);
            line-height: 1.8;
            display: none;
        }
        .faq-item.open .faq-answer {
            display: block;
        }

        /* CTA Form */
        .cta-card {
            background: var(--bg-800);
            border: 1px solid var(--border-green-strong);
            border-radius: var(--radius-card);
            padding: 36px;
            box-shadow: var(--shadow-card);
        }
        .cta-input {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: var(--radius-input);
            color: var(--text-hi);
            padding: 12px 16px;
            font-size: 14px;
            transition: border-color 0.25s ease, box-shadow 0.25s ease;
            width: 100%;
        }
        .cta-input::placeholder {
            color: var(--text-muted);
        }
        .cta-input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(36, 194, 106, 0.2);
            outline: none;
        }
        .cta-submit {
            background-color: var(--orange);
            color: #fff;
            border: none;
            font-weight: 600;
            font-size: 15px;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            transition: background-color 0.2s ease, box-shadow 0.2s ease, transform 0.15s ease;
        }
        .cta-submit:hover {
            background-color: #ff6f4a;
            color: #fff;
            box-shadow: 0 0 0 4px rgba(255, 92, 53, 0.15);
        }
        .cta-submit:active {
            transform: scale(0.98);
        }
        .privacy-note {
            font-size: 12px;
            color: var(--text-muted);
            margin-top: 10px;
        }

        /* Footer */
        .site-footer {
            background-color: var(--bg-900);
            border-top: 1px solid var(--border-dim);
            padding-top: 56px;
            padding-bottom: 28px;
            color: var(--text-muted);
        }
        .footer-col-title {
            font-size: 14px;
            font-weight: 700;
            color: var(--text-hi);
            margin-bottom: 16px;
            letter-spacing: 0.03em;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .footer-links a {
            font-size: 13px;
            color: var(--text-muted);
            transition: color 0.2s ease;
        }
        .footer-links a:hover {
            color: var(--primary);
        }
        .footer-bottom {
            border-top: 1px solid var(--border-dim);
            padding-top: 20px;
            margin-top: 40px;
            font-size: 13px;
            color: var(--text-muted);
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 12px;
        }
        .footer-bottom a {
            color: var(--text-muted);
        }
        .footer-bottom a:hover {
            color: var(--primary);
        }

        .navbar-toggler {
            border: 1px solid var(--border-green);
            padding: 6px 10px;
            border-radius: 6px;
        }
        .navbar-toggler:focus {
            box-shadow: none;
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }
        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='%2324C26A' stroke-linecap='round' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }

        /* Responsive */
        @media (max-width: 992px) {
            .banner-h1 {
                font-size: 30px;
            }
            .subtopic-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .featured-grid {
                grid-template-columns: 1fr;
            }
            .data-strip-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .reading-item {
                grid-template-columns: 1fr;
            }
            .reading-img {
                height: 180px;
            }
            .command-search {
                display: none;
            }
        }
        @media (max-width: 768px) {
            :root {
                --section-spacing: 64px;
                --section-spacing-mobile: 48px;
            }
            .container-site {
                padding-left: 16px;
                padding-right: 16px;
            }
            .banner-h1 {
                font-size: 25px;
            }
            .banner-sub {
                font-size: 15px;
            }
            .subtopic-grid {
                grid-template-columns: 1fr;
            }
            .data-strip-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .banner-stats {
                gap: 10px;
            }
            .banner-stat-item {
                min-width: 100px;
                padding: 10px 14px;
            }
            .banner-stat-num {
                font-size: 20px;
            }
            .cta-card {
                padding: 24px 18px;
            }
            .featured-img {
                height: 170px;
            }
            .site-footer {
                padding-top: 40px;
            }
        }
        @media (max-width: 540px) {
            .section-title {
                font-size: 22px;
            }
            .banner-h1 {
                font-size: 22px;
            }
            .btn-main,
            .btn-ghost {
                width: 100%;
                text-align: center;
            }
            .banner-actions {
                flex-direction: column;
                width: 100%;
            }
            .data-strip-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .data-strip-num {
                font-size: 24px;
            }
        }