/* roulang page: index */
:root {
            --ng-bg: #17171C;
            --ng-card: #1F1F28;
            --ng-border: #2E2E3A;
            --ng-primary: #FF7A1A;
            --ng-primary-hover: #FF8C3A;
            --ng-secondary: #3B2E5D;
            --ng-success: #8CE99A;
            --ng-gold: #E8C547;
            --ng-text: #E8E8EC;
            --ng-subtext: #A0A0B0;
            --ng-weak: #6E6E7E;
            --ng-radius: 12px;
            --ng-radius-btn: 8px;
            --ng-radius-sm: 6px;
            --ng-shadow-base: 0 4px 16px rgba(0,0,0,0.35);
            --ng-shadow-hover: 0 8px 28px rgba(0,0,0,0.5);
            --ng-shadow-glow: 0 0 24px rgba(255,122,26,0.35);
            --ng-transition: all 0.25s ease;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

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

        body {
            font-family: 'system-ui', '-apple-system', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', 'sans-serif';
            background-color: var(--ng-bg);
            color: var(--ng-text);
            line-height: 1.7;
            font-size: 16px;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: var(--ng-transition);
        }

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

        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            color: inherit;
            outline: none;
            border: none;
            background: none;
        }

        button {
            cursor: pointer;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        @media (min-width: 768px) {
            .container {
                padding: 0 32px;
            }
        }

        @media (min-width: 1024px) {
            .container {
                padding: 0 40px;
            }
        }

        /* Header / Nav */
        .ng-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 50;
            height: 64px;
            background: rgba(23, 23, 28, 0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--ng-border);
            transition: var(--ng-transition);
        }

        .ng-header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }

        .ng-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 800;
            letter-spacing: -0.01em;
            color: var(--ng-text);
            flex-shrink: 0;
        }

        .ng-logo-icon {
            width: 32px;
            height: 32px;
            border-radius: 8px;
            background: linear-gradient(135deg, var(--ng-primary), var(--ng-secondary));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            font-weight: 900;
            color: #fff;
            flex-shrink: 0;
        }

        .ng-nav-desktop {
            display: none;
            align-items: center;
            gap: 4px;
        }

        @media (min-width: 1024px) {
            .ng-nav-desktop {
                display: flex;
            }
        }

        .ng-nav-link {
            display: inline-flex;
            align-items: center;
            padding: 8px 14px;
            font-size: 14px;
            font-weight: 500;
            color: var(--ng-subtext);
            border-radius: 8px;
            position: relative;
            transition: var(--ng-transition);
            white-space: nowrap;
        }

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

        .ng-nav-link.ng-active {
            color: var(--ng-primary);
        }

        .ng-nav-link.ng-active::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 14px;
            right: 14px;
            height: 2px;
            background: var(--ng-primary);
            border-radius: 2px;
        }

        .ng-nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--ng-primary);
            color: #fff;
            font-weight: 600;
            font-size: 14px;
            padding: 10px 20px;
            border-radius: var(--ng-radius-btn);
            transition: var(--ng-transition);
            white-space: nowrap;
            flex-shrink: 0;
        }

        .ng-nav-cta:hover {
            background: var(--ng-primary-hover);
            box-shadow: var(--ng-shadow-glow);
            transform: translateY(-1px);
        }

        .ng-nav-right {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .ng-hamburger {
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            width: 40px;
            height: 40px;
            border-radius: 8px;
            border: 1px solid var(--ng-border);
            background: transparent;
            gap: 5px;
            transition: var(--ng-transition);
        }

        .ng-hamburger span {
            display: block;
            width: 20px;
            height: 2px;
            background: var(--ng-text);
            border-radius: 2px;
            transition: var(--ng-transition);
        }

        .ng-hamburger:hover {
            border-color: var(--ng-primary);
        }

        @media (min-width: 1024px) {
            .ng-hamburger {
                display: none;
            }
        }

        /* Mobile menu */
        .ng-mobile-menu {
            position: fixed;
            top: 64px;
            left: 0;
            right: 0;
            bottom: 0;
            z-index: 49;
            background: rgba(23, 23, 28, 0.98);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            display: none;
            flex-direction: column;
            padding: 20px;
            overflow-y: auto;
        }

        .ng-mobile-menu.ng-open {
            display: flex;
        }

        .ng-mobile-menu-inner {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .ng-mobile-nav-link {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 16px;
            font-size: 16px;
            font-weight: 500;
            color: var(--ng-subtext);
            border-radius: 10px;
            border-bottom: 1px solid var(--ng-border);
            transition: var(--ng-transition);
        }

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

        .ng-mobile-nav-link.ng-active {
            color: var(--ng-primary);
        }

        .ng-mobile-cta {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: var(--ng-primary);
            color: #fff;
            font-weight: 600;
            font-size: 16px;
            padding: 14px 24px;
            border-radius: var(--ng-radius-btn);
            margin-top: 16px;
            transition: var(--ng-transition);
        }

        .ng-mobile-cta:hover {
            background: var(--ng-primary-hover);
        }

        /* Hero */
        .ng-hero {
            position: relative;
            min-height: 70vh;
            display: flex;
            align-items: center;
            padding: 120px 0 80px;
            background-image: url('/assets/images/8b3d77673aa5f35d.webp');
            background-size: cover;
            background-position: center;
            overflow: hidden;
        }

        .ng-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(160deg, rgba(23, 23, 28, 0.82) 0%, rgba(23, 23, 28, 0.55) 45%, rgba(23, 23, 28, 0.88) 100%);
            z-index: 1;
        }

        .ng-hero-content {
            position: relative;
            z-index: 2;
            max-width: 720px;
        }

        .ng-hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 122, 26, 0.15);
            border: 1px solid rgba(255, 122, 26, 0.35);
            color: var(--ng-primary);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: 20px;
            margin-bottom: 18px;
            letter-spacing: 0.5px;
        }

        .ng-hero-h1 {
            font-size: 32px;
            font-weight: 800;
            letter-spacing: -0.01em;
            line-height: 1.25;
            color: #fff;
            margin-bottom: 18px;
        }

        @media (min-width: 768px) {
            .ng-hero-h1 {
                font-size: 38px;
            }
        }

        @media (min-width: 1024px) {
            .ng-hero-h1 {
                font-size: 42px;
            }
        }

        .ng-hero-sub {
            font-size: 16px;
            color: rgba(232, 232, 236, 0.85);
            line-height: 1.85;
            margin-bottom: 28px;
            max-width: 620px;
        }

        @media (min-width: 768px) {
            .ng-hero-sub {
                font-size: 17px;
            }
        }

        .ng-hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-bottom: 24px;
        }

        .ng-btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: var(--ng-primary);
            color: #fff;
            font-weight: 600;
            font-size: 15px;
            padding: 13px 28px;
            border-radius: var(--ng-radius-btn);
            transition: var(--ng-transition);
            letter-spacing: 0.2px;
        }

        .ng-btn-primary:hover {
            background: var(--ng-primary-hover);
            box-shadow: var(--ng-shadow-glow);
            transform: translateY(-1px);
        }

        .ng-btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: transparent;
            color: var(--ng-text);
            font-weight: 500;
            font-size: 15px;
            padding: 13px 28px;
            border-radius: var(--ng-radius-btn);
            border: 1px solid var(--ng-border);
            transition: var(--ng-transition);
            letter-spacing: 0.2px;
        }

        .ng-btn-secondary:hover {
            border-color: var(--ng-primary);
            color: #fff;
        }

        .ng-hero-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .ng-hero-tag {
            font-size: 12px;
            color: var(--ng-subtext);
            padding: 4px 12px;
            border-radius: 16px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.08);
            letter-spacing: 0.3px;
        }

        /* Countdown */
        .ng-countdown {
            display: flex;
            gap: 12px;
            margin-bottom: 22px;
        }

        .ng-countdown-item {
            background: rgba(23, 23, 28, 0.75);
            border: 1px solid var(--ng-border);
            border-radius: 10px;
            padding: 10px 16px;
            text-align: center;
            min-width: 64px;
        }

        .ng-countdown-num {
            font-size: 28px;
            font-weight: 800;
            color: var(--ng-primary);
            line-height: 1.2;
        }

        .ng-countdown-label {
            font-size: 11px;
            color: var(--ng-subtext);
            margin-top: 4px;
        }

        /* Section base */
        .ng-section {
            padding: 64px 0;
        }

        @media (min-width: 768px) {
            .ng-section {
                padding: 80px 0;
            }
        }

        .ng-section-alt {
            background: var(--ng-card);
            border-top: 1px solid var(--ng-border);
            border-bottom: 1px solid var(--ng-border);
        }

        .ng-section-header {
            margin-bottom: 40px;
            max-width: 720px;
        }

        .ng-section-label {
            font-size: 13px;
            font-weight: 600;
            color: var(--ng-primary);
            text-transform: uppercase;
            letter-spacing: 1.5px;
            margin-bottom: 10px;
        }

        .ng-section-title {
            font-size: 26px;
            font-weight: 800;
            letter-spacing: -0.01em;
            color: #fff;
            line-height: 1.35;
            margin-bottom: 14px;
        }

        @media (min-width: 768px) {
            .ng-section-title {
                font-size: 30px;
            }
        }

        .ng-section-desc {
            font-size: 15px;
            color: var(--ng-subtext);
            line-height: 1.85;
        }

        /* Cards */
        .ng-card {
            background: var(--ng-card);
            border: 1px solid var(--ng-border);
            border-radius: var(--ng-radius);
            padding: 24px;
            transition: var(--ng-transition);
            box-shadow: var(--ng-shadow-base);
        }

        .ng-card:hover {
            border-color: var(--ng-primary);
            box-shadow: var(--ng-shadow-hover);
            transform: translateY(-3px);
        }

        .ng-grid-3 {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
        }

        @media (min-width: 768px) {
            .ng-grid-3 {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
        }

        @media (min-width: 1024px) {
            .ng-grid-3 {
                grid-template-columns: repeat(3, 1fr);
                gap: 24px;
            }
        }

        .ng-grid-2 {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
        }

        @media (min-width: 768px) {
            .ng-grid-2 {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
        }

        .ng-grid-4 {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
        }

        @media (min-width: 640px) {
            .ng-grid-4 {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
        }

        @media (min-width: 1024px) {
            .ng-grid-4 {
                grid-template-columns: repeat(4, 1fr);
                gap: 24px;
            }
        }

        /* Feature card */
        .ng-feature-card {
            background: var(--ng-card);
            border: 1px solid var(--ng-border);
            border-radius: var(--ng-radius);
            padding: 24px;
            transition: var(--ng-transition);
        }

        .ng-feature-card:hover {
            border-color: var(--ng-primary);
            box-shadow: var(--ng-shadow-hover);
            transform: translateY(-3px);
        }

        .ng-feature-icon {
            width: 44px;
            height: 44px;
            border-radius: 10px;
            background: var(--ng-secondary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            margin-bottom: 16px;
            flex-shrink: 0;
        }

        .ng-feature-title {
            font-size: 17px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }

        .ng-feature-desc {
            font-size: 14px;
            color: var(--ng-subtext);
            line-height: 1.75;
        }

        /* Data snapshot */
        .ng-data-bar {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
            background: var(--ng-card);
            border: 1px solid var(--ng-border);
            border-radius: var(--ng-radius);
            padding: 24px;
        }

        @media (min-width: 768px) {
            .ng-data-bar {
                grid-template-columns: repeat(4, 1fr);
                padding: 28px 32px;
                gap: 24px;
            }
        }

        .ng-data-item {
            text-align: center;
        }

        .ng-data-num {
            font-size: 30px;
            font-weight: 800;
            color: var(--ng-primary);
            line-height: 1.3;
            letter-spacing: -0.01em;
        }

        .ng-data-label {
            font-size: 13px;
            color: var(--ng-subtext);
            margin-top: 6px;
        }

        /* Scenario cards */
        .ng-scenario-card {
            background: var(--ng-card);
            border: 1px solid var(--ng-border);
            border-radius: var(--ng-radius);
            overflow: hidden;
            transition: var(--ng-transition);
            box-shadow: var(--ng-shadow-base);
        }

        .ng-scenario-card:hover {
            border-color: var(--ng-primary);
            box-shadow: var(--ng-shadow-hover);
            transform: translateY(-3px);
        }

        .ng-scenario-img {
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
            display: block;
        }

        .ng-scenario-body {
            padding: 20px;
        }

        .ng-scenario-title {
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }

        .ng-scenario-desc {
            font-size: 14px;
            color: var(--ng-subtext);
            line-height: 1.7;
        }

        /* Screenshot cards */
        .ng-screenshot-card {
            background: var(--ng-card);
            border: 1px solid var(--ng-border);
            border-radius: var(--ng-radius);
            overflow: hidden;
            transition: var(--ng-transition);
        }

        .ng-screenshot-card:hover {
            border-color: var(--ng-primary);
            transform: translateY(-3px);
            box-shadow: var(--ng-shadow-hover);
        }

        .ng-screenshot-img {
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
            display: block;
        }

        .ng-screenshot-caption {
            padding: 14px 16px;
            font-size: 13px;
            color: var(--ng-subtext);
            border-top: 1px solid var(--ng-border);
        }

        /* Testimonial */
        .ng-testimonial-card {
            background: var(--ng-card);
            border: 1px solid var(--ng-border);
            border-radius: var(--ng-radius);
            padding: 24px;
            transition: var(--ng-transition);
        }

        .ng-testimonial-card:hover {
            border-color: var(--ng-gold);
            box-shadow: var(--ng-shadow-hover);
            transform: translateY(-3px);
        }

        .ng-testimonial-stars {
            display: flex;
            gap: 4px;
            margin-bottom: 12px;
            color: var(--ng-gold);
            font-size: 16px;
        }

        .ng-testimonial-text {
            font-size: 14px;
            color: var(--ng-subtext);
            line-height: 1.75;
            margin-bottom: 14px;
        }

        .ng-testimonial-author {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .ng-testimonial-avatar {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--ng-secondary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            font-weight: 700;
            color: #fff;
            flex-shrink: 0;
        }

        .ng-testimonial-name {
            font-size: 14px;
            font-weight: 600;
            color: #fff;
        }

        .ng-testimonial-meta {
            font-size: 12px;
            color: var(--ng-weak);
        }

        /* Pricing */
        .ng-pricing-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
        }

        @media (min-width: 768px) {
            .ng-pricing-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 24px;
                align-items: stretch;
            }
        }

        .ng-pricing-card {
            background: var(--ng-card);
            border: 1px solid var(--ng-border);
            border-radius: var(--ng-radius);
            padding: 28px 24px;
            transition: var(--ng-transition);
            display: flex;
            flex-direction: column;
            box-shadow: var(--ng-shadow-base);
        }

        .ng-pricing-card:hover {
            box-shadow: var(--ng-shadow-hover);
            transform: translateY(-3px);
        }

        .ng-pricing-card.ng-featured {
            border-color: var(--ng-primary);
            box-shadow: 0 0 32px rgba(255, 122, 26, 0.2);
        }

        .ng-pricing-badge {
            display: inline-flex;
            align-items: center;
            background: var(--ng-primary);
            color: #fff;
            font-size: 12px;
            font-weight: 700;
            padding: 4px 12px;
            border-radius: 16px;
            margin-bottom: 14px;
            align-self: flex-start;
        }

        .ng-pricing-name {
            font-size: 18px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }

        .ng-pricing-price {
            font-size: 32px;
            font-weight: 800;
            color: var(--ng-primary);
            margin-bottom: 4px;
            letter-spacing: -0.01em;
        }

        .ng-pricing-price small {
            font-size: 14px;
            font-weight: 500;
            color: var(--ng-subtext);
        }

        .ng-pricing-desc {
            font-size: 14px;
            color: var(--ng-subtext);
            margin-bottom: 18px;
        }

        .ng-pricing-features {
            list-style: none;
            margin-bottom: 20px;
            flex-grow: 1;
        }

        .ng-pricing-features li {
            font-size: 13px;
            color: var(--ng-subtext);
            padding: 6px 0;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .ng-pricing-features li.ng-check::before {
            content: '✓';
            color: var(--ng-success);
            font-weight: 700;
            width: 18px;
        }

        .ng-pricing-features li.ng-minus::before {
            content: '—';
            color: var(--ng-weak);
            width: 18px;
        }

        /* FAQ */
        .ng-faq-item {
            border-bottom: 1px solid var(--ng-border);
            overflow: hidden;
        }

        .ng-faq-item:first-child {
            border-top: 1px solid var(--ng-border);
        }

        .ng-faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            padding: 18px 4px;
            font-size: 15px;
            font-weight: 600;
            color: var(--ng-text);
            text-align: left;
            gap: 16px;
            transition: var(--ng-transition);
        }

        .ng-faq-question:hover {
            color: var(--ng-primary);
        }

        .ng-faq-arrow {
            flex-shrink: 0;
            transition: transform 0.3s ease;
            color: var(--ng-subtext);
        }

        .ng-faq-item.ng-open .ng-faq-arrow {
            transform: rotate(180deg);
        }

        .ng-faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
            background: transparent;
        }

        .ng-faq-item.ng-open .ng-faq-answer {
            max-height: 500px;
        }

        .ng-faq-answer-inner {
            padding: 0 4px 18px;
            font-size: 14px;
            color: var(--ng-subtext);
            line-height: 1.8;
        }

        /* Table */
        .ng-table-wrap {
            overflow-x: auto;
            background: var(--ng-card);
            border: 1px solid var(--ng-border);
            border-radius: var(--ng-radius);
            padding: 4px;
        }

        .ng-table {
            width: 100%;
            border-collapse: collapse;
            font-size: 14px;
            min-width: 480px;
        }

        .ng-table th,
        .ng-table td {
            padding: 14px 18px;
            text-align: left;
            border-bottom: 1px solid var(--ng-border);
        }

        .ng-table th {
            font-weight: 700;
            color: #fff;
            background: var(--ng-card);
            font-size: 13px;
            letter-spacing: 0.3px;
        }

        .ng-table td {
            color: var(--ng-subtext);
        }

        .ng-table tr:last-child th,
        .ng-table tr:last-child td {
            border-bottom: none;
        }

        /* Form */
        .ng-form {
            display: flex;
            flex-direction: column;
            gap: 12px;
            max-width: 480px;
            margin: 0 auto;
        }

        @media (min-width: 640px) {
            .ng-form {
                flex-direction: row;
                align-items: center;
                max-width: 560px;
            }
        }

        .ng-input {
            flex: 1;
            background: var(--ng-card);
            border: 1px solid var(--ng-border);
            border-radius: var(--ng-radius-sm);
            padding: 12px 16px;
            font-size: 14px;
            color: var(--ng-text);
            transition: var(--ng-transition);
            min-width: 0;
        }

        .ng-input::placeholder {
            color: var(--ng-weak);
        }

        .ng-input:focus {
            border-color: var(--ng-primary);
            box-shadow: 0 0 0 3px rgba(255, 122, 26, 0.15);
        }

        /* CTA section */
        .ng-cta-section {
            background: linear-gradient(145deg, #1F1F28 0%, #17171C 60%, #1F1F28 100%);
            border: 1px solid var(--ng-border);
            border-radius: var(--ng-radius);
            padding: 48px 24px;
            text-align: center;
        }

        @media (min-width: 768px) {
            .ng-cta-section {
                padding: 56px 40px;
            }
        }

        .ng-cta-title {
            font-size: 22px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 14px;
        }

        @media (min-width: 768px) {
            .ng-cta-title {
                font-size: 28px;
            }
        }

        .ng-cta-desc {
            font-size: 15px;
            color: var(--ng-subtext);
            margin-bottom: 24px;
            max-width: 520px;
            margin-left: auto;
            margin-right: auto;
            line-height: 1.8;
        }

        .ng-trust-row {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 16px;
            margin-top: 20px;
            font-size: 12px;
            color: var(--ng-weak);
        }

        /* Footer */
        .ng-footer {
            background: #0F0F14;
            border-top: 1px solid var(--ng-border);
            padding: 48px 0 24px;
        }

        .ng-footer-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }

        @media (min-width: 768px) {
            .ng-footer-grid {
                grid-template-columns: 2fr 1fr 1fr 1fr;
                gap: 40px;
            }
        }

        .ng-footer-brand {
            font-size: 20px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 10px;
        }

        .ng-footer-desc {
            font-size: 13px;
            color: var(--ng-weak);
            line-height: 1.8;
            max-width: 280px;
        }

        .ng-footer-title {
            font-size: 14px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.3px;
        }

        .ng-footer-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .ng-footer-links a {
            font-size: 13px;
            color: var(--ng-weak);
            transition: var(--ng-transition);
        }

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

        .ng-footer-bottom {
            border-top: 1px solid var(--ng-border);
            padding-top: 20px;
            display: flex;
            flex-direction: column;
            gap: 10px;
            font-size: 12px;
            color: var(--ng-weak);
        }

        @media (min-width: 768px) {
            .ng-footer-bottom {
                flex-direction: row;
                justify-content: space-between;
                align-items: center;
                flex-wrap: wrap;
            }
        }

        .ng-footer-bottom-links {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
        }

        .ng-footer-bottom-links a {
            color: var(--ng-weak);
            font-size: 12px;
        }

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

        /* Timeline */
        .ng-timeline {
            position: relative;
            padding-left: 24px;
        }

        .ng-timeline::before {
            content: '';
            position: absolute;
            left: 8px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: var(--ng-border);
        }

        .ng-timeline-item {
            position: relative;
            padding-bottom: 28px;
        }

        .ng-timeline-item:last-child {
            padding-bottom: 0;
        }

        .ng-timeline-dot {
            position: absolute;
            left: -24px;
            top: 4px;
            width: 18px;
            height: 18px;
            border-radius: 50%;
            background: var(--ng-primary);
            border: 3px solid var(--ng-bg);
            box-shadow: 0 0 0 2px var(--ng-primary);
        }

        .ng-timeline-content {
            background: var(--ng-card);
            border: 1px solid var(--ng-border);
            border-radius: var(--ng-radius);
            padding: 18px 20px;
        }

        .ng-timeline-title {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 6px;
        }

        .ng-timeline-desc {
            font-size: 13px;
            color: var(--ng-subtext);
            line-height: 1.75;
        }

        /* News card */
        .ng-news-card {
            background: var(--ng-card);
            border: 1px solid var(--ng-border);
            border-radius: var(--ng-radius);
            overflow: hidden;
            transition: var(--ng-transition);
        }

        .ng-news-card:hover {
            border-color: var(--ng-primary);
            box-shadow: var(--ng-shadow-hover);
            transform: translateY(-3px);
        }

        .ng-news-img {
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
        }

        .ng-news-body {
            padding: 18px 20px;
        }

        .ng-news-title {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
            line-height: 1.5;
        }

        .ng-news-desc {
            font-size: 13px;
            color: var(--ng-subtext);
            line-height: 1.7;
            margin-bottom: 10px;
        }

        .ng-news-meta {
            font-size: 12px;
            color: var(--ng-weak);
            display: flex;
            gap: 12px;
            align-items: center;
        }

        /* Community item */
        .ng-community-item {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 14px 16px;
            background: var(--ng-card);
            border: 1px solid var(--ng-border);
            border-radius: 10px;
            transition: var(--ng-transition);
            margin-bottom: 10px;
        }

        .ng-community-item:hover {
            border-color: var(--ng-primary);
            transform: translateX(4px);
        }

        .ng-community-rank {
            font-size: 20px;
            font-weight: 800;
            color: var(--ng-primary);
            width: 32px;
            text-align: center;
            flex-shrink: 0;
        }

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

        .ng-community-title {
            font-size: 14px;
            font-weight: 600;
            color: var(--ng-text);
            margin-bottom: 2px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .ng-community-meta {
            font-size: 12px;
            color: var(--ng-weak);
        }

        .ng-community-heat {
            font-size: 13px;
            font-weight: 700;
            color: var(--ng-gold);
            flex-shrink: 0;
        }

        /* Step */
        .ng-step-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
        }

        @media (min-width: 640px) {
            .ng-step-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
        }

        @media (min-width: 1024px) {
            .ng-step-grid {
                grid-template-columns: repeat(4, 1fr);
                gap: 24px;
            }
        }

        .ng-step-card {
            background: var(--ng-card);
            border: 1px solid var(--ng-border);
            border-radius: var(--ng-radius);
            padding: 24px;
            text-align: center;
            transition: var(--ng-transition);
        }

        .ng-step-card:hover {
            border-color: var(--ng-primary);
            transform: translateY(-3px);
        }

        .ng-step-num {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--ng-secondary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 800;
            color: var(--ng-primary);
            margin: 0 auto 14px;
        }

        .ng-step-title {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }

        .ng-step-desc {
            font-size: 13px;
            color: var(--ng-subtext);
            line-height: 1.7;
        }

        /* Scene demo */
        .ng-scene-demo {
            display: grid;
            grid-template-columns: 1fr;
            gap: 24px;
            align-items: center;
        }

        @media (min-width: 768px) {
            .ng-scene-demo {
                grid-template-columns: 1fr 1fr;
                gap: 40px;
            }
        }

        .ng-scene-demo-img {
            width: 100%;
            aspect-ratio: 16/10;
            object-fit: cover;
            border-radius: var(--ng-radius);
            border: 1px solid var(--ng-border);
        }

        .ng-scene-demo-text {
            font-size: 15px;
            color: var(--ng-subtext);
            line-height: 1.85;
        }

        /* Brand intro */
        .ng-brand-intro {
            background: var(--ng-card);
            border: 1px solid var(--ng-border);
            border-radius: var(--ng-radius);
            padding: 32px 24px;
            box-shadow: var(--ng-shadow-base);
        }

        @media (min-width: 768px) {
            .ng-brand-intro {
                padding: 40px 36px;
            }
        }

        .ng-brand-intro p {
            font-size: 15px;
            color: var(--ng-subtext);
            line-height: 1.95;
            margin-bottom: 14px;
        }

        .ng-brand-intro p:last-child {
            margin-bottom: 0;
        }

        /* Security list */
        .ng-security-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 16px;
        }

        @media (min-width: 640px) {
            .ng-security-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
        }

        @media (min-width: 1024px) {
            .ng-security-grid {
                grid-template-columns: repeat(4, 1fr);
                gap: 20px;
            }
        }

        .ng-security-item {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 16px 18px;
            background: var(--ng-card);
            border: 1px solid var(--ng-border);
            border-radius: 10px;
            transition: var(--ng-transition);
        }

        .ng-security-item:hover {
            border-color: var(--ng-success);
        }

        .ng-security-icon {
            font-size: 20px;
            color: var(--ng-success);
            flex-shrink: 0;
        }

        .ng-security-text {
            font-size: 13px;
            color: var(--ng-subtext);
            line-height: 1.5;
        }

        /* Tag */
        .ng-tag {
            display: inline-flex;
            align-items: center;
            padding: 3px 10px;
            border-radius: 16px;
            font-size: 12px;
            font-weight: 500;
            letter-spacing: 0.3px;
        }

        .ng-tag-orange {
            background: rgba(255, 122, 26, 0.12);
            color: var(--ng-primary);
            border: 1px solid rgba(255, 122, 26, 0.3);
        }

        .ng-tag-green {
            background: rgba(140, 233, 154, 0.1);
            color: var(--ng-success);
            border: 1px solid rgba(140, 233, 154, 0.25);
        }

        .ng-tag-gold {
            background: rgba(232, 197, 71, 0.1);
            color: var(--ng-gold);
            border: 1px solid rgba(232, 197, 71, 0.3);
        }

        /* Misc */
        .ng-divider {
            height: 1px;
            background: var(--ng-border);
            margin: 40px 0;
        }

        .ng-text-primary {
            color: var(--ng-primary);
        }

        .ng-text-success {
            color: var(--ng-success);
        }

        .ng-text-gold {
            color: var(--ng-gold);
        }

        .ng-font-bold {
            font-weight: 700;
        }

        .ng-mb-20 {
            margin-bottom: 20px;
        }

        .ng-mb-32 {
            margin-bottom: 32px;
        }

        .ng-mb-48 {
            margin-bottom: 48px;
        }

        /* Smooth scroll for anchored elements */
        [id] {
            scroll-margin-top: 80px;
        }

        @media (max-width: 768px) {
            .ng-hero {
                min-height: auto;
                padding: 110px 0 60px;
            }
            .ng-hero-h1 {
                font-size: 27px;
            }
            .ng-section {
                padding: 48px 0;
            }
            .ng-section-title {
                font-size: 22px;
            }
        }

        @media (max-width: 520px) {
            .ng-hero-h1 {
                font-size: 24px;
            }
            .ng-countdown-item {
                min-width: 52px;
                padding: 8px 10px;
            }
            .ng-countdown-num {
                font-size: 22px;
            }
            .ng-hero-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .ng-btn-primary,
            .ng-btn-secondary {
                width: 100%;
                text-align: center;
                justify-content: center;
            }
        }

/* roulang page: category1 */
:root {
            --ng-bg: #17171C;
            --ng-card: #1F1F28;
            --ng-border: #2E2E3A;
            --ng-primary: #FF7A1A;
            --ng-primary-hover: #FF8C3A;
            --ng-secondary: #3B2E5D;
            --ng-success: #8CE99A;
            --ng-gold: #E8C547;
            --ng-text: #E8E8EC;
            --ng-subtext: #A0A0B0;
            --ng-weak: #6E6E7E;
            --ng-radius: 12px;
            --ng-radius-btn: 8px;
            --ng-radius-sm: 6px;
            --ng-shadow-base: 0 4px 16px rgba(0, 0, 0, 0.35);
            --ng-shadow-hover: 0 8px 28px rgba(0, 0, 0, 0.5);
            --ng-shadow-glow: 0 0 24px rgba(255, 122, 26, 0.35);
            --ng-transition: all 0.25s ease;
        }

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

        body {
            font-family: 'system-ui', '-apple-system', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', 'sans-serif';
            background-color: var(--ng-bg);
            color: var(--ng-text);
            line-height: 1.7;
            font-size: 16px;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: var(--ng-transition);
        }

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

        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            color: inherit;
            outline: none;
            border: none;
            background: none;
        }

        button {
            cursor: pointer;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        @media (min-width: 640px) {
            .container {
                padding: 0 32px;
            }
        }

        @media (min-width: 1024px) {
            .container {
                padding: 0 40px;
            }
        }

        /* Header / Nav */
        .ng-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 50;
            height: 64px;
            background: rgba(23, 23, 28, 0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--ng-border);
            transition: var(--ng-transition);
        }

        .ng-header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }

        .ng-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 800;
            letter-spacing: -0.01em;
            color: var(--ng-text);
            flex-shrink: 0;
        }

        .ng-logo-icon {
            width: 32px;
            height: 32px;
            border-radius: 8px;
            background: linear-gradient(135deg, var(--ng-primary), var(--ng-secondary));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            font-weight: 900;
            color: #fff;
            flex-shrink: 0;
        }

        .ng-nav-desktop {
            display: none;
            align-items: center;
            gap: 4px;
        }

        @media (min-width: 768px) {
            .ng-nav-desktop {
                display: flex;
            }
        }

        .ng-nav-link {
            display: inline-flex;
            align-items: center;
            padding: 8px 14px;
            font-size: 14px;
            font-weight: 500;
            color: var(--ng-subtext);
            border-radius: 8px;
            position: relative;
            transition: var(--ng-transition);
            white-space: nowrap;
        }

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

        .ng-nav-link.ng-active {
            color: var(--ng-primary);
        }

        .ng-nav-link.ng-active::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 14px;
            right: 14px;
            height: 2px;
            background: var(--ng-primary);
            border-radius: 2px;
        }

        .ng-nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--ng-primary);
            color: #fff;
            font-weight: 600;
            font-size: 14px;
            padding: 10px 20px;
            border-radius: var(--ng-radius-btn);
            transition: var(--ng-transition);
            white-space: nowrap;
            flex-shrink: 0;
        }

        .ng-nav-cta:hover {
            background: var(--ng-primary-hover);
            box-shadow: var(--ng-shadow-glow);
            transform: translateY(-1px);
        }

        .ng-nav-right {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .ng-hamburger {
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            width: 40px;
            height: 40px;
            border-radius: 8px;
            border: 1px solid var(--ng-border);
            background: transparent;
            gap: 5px;
            transition: var(--ng-transition);
        }

        .ng-hamburger span {
            display: block;
            width: 20px;
            height: 2px;
            background: var(--ng-text);
            border-radius: 2px;
            transition: var(--ng-transition);
        }

        .ng-hamburger:hover {
            border-color: var(--ng-primary);
        }

        @media (min-width: 768px) {
            .ng-hamburger {
                display: none;
            }
        }

        /* Mobile menu */
        .ng-mobile-menu {
            position: fixed;
            top: 64px;
            left: 0;
            right: 0;
            bottom: 0;
            z-index: 49;
            background: rgba(23, 23, 28, 0.98);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            display: none;
            flex-direction: column;
            padding: 20px;
            overflow-y: auto;
        }

        .ng-mobile-menu.ng-open {
            display: flex;
        }

        .ng-mobile-menu .ng-nav-link {
            display: flex;
            padding: 14px 16px;
            font-size: 16px;
            border-bottom: 1px solid var(--ng-border);
            border-radius: 0;
        }

        .ng-mobile-menu .ng-nav-link.ng-active {
            background: rgba(255, 122, 26, 0.08);
            border-left: 3px solid var(--ng-primary);
        }

        .ng-mobile-menu .ng-nav-cta {
            margin-top: 16px;
            justify-content: center;
            padding: 14px 24px;
            font-size: 16px;
        }

        /* Breadcrumb */
        .ng-breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--ng-weak);
            margin-bottom: 12px;
            flex-wrap: wrap;
        }

        .ng-breadcrumb a {
            color: var(--ng-weak);
            transition: var(--ng-transition);
        }

        .ng-breadcrumb a:hover {
            color: var(--ng-primary);
        }

        .ng-breadcrumb .ng-divider {
            color: var(--ng-weak);
            user-select: none;
        }

        .ng-breadcrumb .ng-current {
            color: var(--ng-subtext);
        }

        /* Compact page header */
        .ng-page-header {
            padding: 120px 0 40px;
            background: linear-gradient(180deg, rgba(255, 122, 26, 0.04) 0%, var(--ng-bg) 100%);
            border-bottom: 1px solid var(--ng-border);
        }

        .ng-page-header h1 {
            font-size: 36px;
            font-weight: 800;
            letter-spacing: -0.01em;
            color: var(--ng-text);
            margin-bottom: 12px;
            line-height: 1.3;
        }

        .ng-page-header .ng-subtitle {
            font-size: 16px;
            color: var(--ng-subtext);
            max-width: 720px;
            line-height: 1.8;
        }

        /* Filter tags */
        .ng-filter-bar {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 24px;
        }

        .ng-filter-tag {
            padding: 8px 18px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 500;
            color: var(--ng-subtext);
            background: var(--ng-card);
            border: 1px solid var(--ng-border);
            transition: var(--ng-transition);
            cursor: pointer;
            user-select: none;
        }

        .ng-filter-tag:hover {
            color: var(--ng-text);
            border-color: var(--ng-primary);
        }

        .ng-filter-tag.ng-filter-active {
            background: var(--ng-primary);
            color: #fff;
            border-color: var(--ng-primary);
        }

        /* Game card grid */
        .ng-game-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 24px;
            padding: 48px 0;
        }

        @media (min-width: 640px) {
            .ng-game-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (min-width: 1024px) {
            .ng-game-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }

        .ng-game-card {
            background: var(--ng-card);
            border: 1px solid var(--ng-border);
            border-radius: var(--ng-radius);
            overflow: hidden;
            transition: var(--ng-transition);
            display: flex;
            flex-direction: column;
        }

        .ng-game-card:hover {
            box-shadow: var(--ng-shadow-hover);
            border-color: var(--ng-primary);
            transform: translateY(-3px);
        }

        .ng-game-card-img {
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
            border-bottom: 1px solid var(--ng-border);
        }

        .ng-game-card-body {
            padding: 20px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .ng-game-card-title {
            font-size: 17px;
            font-weight: 700;
            color: var(--ng-text);
            margin-bottom: 6px;
            letter-spacing: -0.01em;
        }

        .ng-game-card-version {
            font-size: 12px;
            color: var(--ng-weak);
            background: rgba(255, 255, 255, 0.04);
            padding: 2px 10px;
            border-radius: 4px;
            display: inline-block;
            margin-bottom: 10px;
            align-self: flex-start;
        }

        .ng-game-card-desc {
            font-size: 14px;
            color: var(--ng-subtext);
            line-height: 1.7;
            margin-bottom: 16px;
            flex: 1;
        }

        .ng-game-card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
        }

        .ng-game-download-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--ng-primary);
            color: #fff;
            font-weight: 600;
            font-size: 13px;
            padding: 10px 18px;
            border-radius: var(--ng-radius-btn);
            transition: var(--ng-transition);
            white-space: nowrap;
        }

        .ng-game-download-btn:hover {
            background: var(--ng-primary-hover);
            box-shadow: var(--ng-shadow-glow);
            transform: translateY(-1px);
        }

        .ng-game-status {
            font-size: 12px;
            font-weight: 600;
            padding: 6px 14px;
            border-radius: 20px;
            border: 1px solid var(--ng-border);
            color: var(--ng-subtext);
        }

        .ng-game-status.ng-status-success {
            color: var(--ng-success);
            border-color: rgba(140, 233, 154, 0.35);
            background: rgba(140, 233, 154, 0.06);
        }

        .ng-game-status.ng-status-gold {
            color: var(--ng-gold);
            border-color: rgba(232, 197, 71, 0.35);
            background: rgba(232, 197, 71, 0.06);
        }

        /* Section styling */
        .ng-section {
            padding: 48px 0;
        }

        .ng-section-alt {
            background: rgba(255, 255, 255, 0.02);
            border-top: 1px solid var(--ng-border);
            border-bottom: 1px solid var(--ng-border);
        }

        .ng-section-title {
            font-size: 24px;
            font-weight: 700;
            letter-spacing: -0.01em;
            color: var(--ng-text);
            margin-bottom: 8px;
        }

        .ng-section-sub {
            font-size: 14px;
            color: var(--ng-subtext);
            margin-bottom: 24px;
        }

        /* Hot ranking list */
        .ng-rank-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .ng-rank-item {
            display: flex;
            align-items: center;
            gap: 16px;
            background: var(--ng-card);
            border: 1px solid var(--ng-border);
            border-radius: var(--ng-radius);
            padding: 14px 18px;
            transition: var(--ng-transition);
        }

        .ng-rank-item:hover {
            border-color: var(--ng-primary);
            box-shadow: var(--ng-shadow-base);
        }

        .ng-rank-number {
            font-size: 22px;
            font-weight: 800;
            color: var(--ng-primary);
            width: 40px;
            text-align: center;
            flex-shrink: 0;
        }

        .ng-rank-item:nth-child(1) .ng-rank-number {
            color: var(--ng-gold);
        }

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

        .ng-rank-name {
            font-size: 15px;
            font-weight: 600;
            color: var(--ng-text);
            margin-bottom: 2px;
        }

        .ng-rank-downloads {
            font-size: 12px;
            color: var(--ng-weak);
        }

        /* New games */
        .ng-new-games {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
        }

        @media (min-width: 640px) {
            .ng-new-games {
                grid-template-columns: repeat(3, 1fr);
            }
        }

        .ng-new-game-card {
            background: var(--ng-card);
            border: 1px solid var(--ng-border);
            border-radius: var(--ng-radius);
            overflow: hidden;
            transition: var(--ng-transition);
        }

        .ng-new-game-card:hover {
            border-color: var(--ng-primary);
            box-shadow: var(--ng-shadow-base);
            transform: translateY(-2px);
        }

        .ng-new-game-img {
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
            border-bottom: 1px solid var(--ng-border);
        }

        .ng-new-game-body {
            padding: 16px;
        }

        .ng-new-game-name {
            font-size: 15px;
            font-weight: 600;
            color: var(--ng-text);
            margin-bottom: 4px;
        }

        .ng-new-game-desc {
            font-size: 13px;
            color: var(--ng-subtext);
            line-height: 1.6;
        }

        /* Download steps */
        .ng-steps {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
        }

        @media (min-width: 640px) {
            .ng-steps {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (min-width: 1024px) {
            .ng-steps {
                grid-template-columns: repeat(4, 1fr);
            }
        }

        .ng-step-item {
            background: var(--ng-card);
            border: 1px solid var(--ng-border);
            border-radius: var(--ng-radius);
            padding: 20px;
            transition: var(--ng-transition);
            position: relative;
        }

        .ng-step-item:hover {
            border-color: var(--ng-primary);
            box-shadow: var(--ng-shadow-base);
        }

        .ng-step-number {
            font-size: 28px;
            font-weight: 800;
            color: var(--ng-primary);
            margin-bottom: 8px;
        }

        .ng-step-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--ng-text);
            margin-bottom: 6px;
        }

        .ng-step-desc {
            font-size: 13px;
            color: var(--ng-subtext);
            line-height: 1.7;
        }

        /* System requirements table */
        .ng-req-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
        }

        @media (min-width: 768px) {
            .ng-req-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        .ng-req-card {
            background: var(--ng-card);
            border: 1px solid var(--ng-border);
            border-radius: var(--ng-radius);
            padding: 24px;
        }

        .ng-req-card.highlight {
            border-color: var(--ng-gold);
            background: rgba(232, 197, 71, 0.04);
        }

        .ng-req-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--ng-text);
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .ng-req-badge {
            font-size: 11px;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: 12px;
            background: var(--ng-primary);
            color: #fff;
        }

        .ng-req-badge.gold {
            background: var(--ng-gold);
            color: #1a1a1a;
        }

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

        .ng-req-list li {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 10px 0;
            border-bottom: 1px solid var(--ng-border);
            font-size: 14px;
        }

        .ng-req-list li:last-child {
            border-bottom: none;
        }

        .ng-req-label {
            color: var(--ng-weak);
        }

        .ng-req-value {
            color: var(--ng-text);
            font-weight: 500;
            text-align: right;
        }

        /* FAQ accordion */
        .ng-faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .ng-faq-item {
            background: var(--ng-card);
            border: 1px solid var(--ng-border);
            border-radius: var(--ng-radius);
            overflow: hidden;
            transition: var(--ng-transition);
        }

        .ng-faq-item:hover {
            border-color: rgba(255, 122, 26, 0.4);
        }

        .ng-faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 20px;
            font-size: 15px;
            font-weight: 600;
            color: var(--ng-text);
            cursor: pointer;
            user-select: none;
            transition: var(--ng-transition);
            width: 100%;
            text-align: left;
        }

        .ng-faq-question:hover {
            color: var(--ng-primary);
        }

        .ng-faq-arrow {
            flex-shrink: 0;
            width: 20px;
            height: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--ng-weak);
            transition: var(--ng-transition);
            font-size: 12px;
        }

        .ng-faq-item.ng-faq-open .ng-faq-arrow {
            transform: rotate(180deg);
            color: var(--ng-primary);
        }

        .ng-faq-answer {
            display: none;
            padding: 0 20px 18px;
            font-size: 14px;
            color: var(--ng-subtext);
            line-height: 1.8;
        }

        .ng-faq-item.ng-faq-open .ng-faq-answer {
            display: block;
        }

        /* Subscribe CTA */
        .ng-cta-box {
            background: linear-gradient(135deg, rgba(255, 122, 26, 0.08) 0%, rgba(59, 46, 93, 0.15) 100%);
            border: 1px solid rgba(255, 122, 26, 0.25);
            border-radius: var(--ng-radius);
            padding: 36px 28px;
            text-align: center;
        }

        .ng-cta-title {
            font-size: 22px;
            font-weight: 700;
            color: var(--ng-text);
            margin-bottom: 8px;
        }

        .ng-cta-desc {
            font-size: 14px;
            color: var(--ng-subtext);
            margin-bottom: 20px;
        }

        .ng-subscribe-form {
            display: flex;
            flex-direction: column;
            gap: 12px;
            max-width: 480px;
            margin: 0 auto;
        }

        @media (min-width: 640px) {
            .ng-subscribe-form {
                flex-direction: row;
            }
        }

        .ng-subscribe-input {
            flex: 1;
            background: var(--ng-card);
            border: 1px solid var(--ng-border);
            border-radius: var(--ng-radius-sm);
            padding: 12px 16px;
            font-size: 14px;
            color: var(--ng-text);
            transition: var(--ng-transition);
        }

        .ng-subscribe-input::placeholder {
            color: var(--ng-weak);
        }

        .ng-subscribe-input:focus {
            border-color: var(--ng-primary);
            box-shadow: 0 0 0 3px rgba(255, 122, 26, 0.12);
        }

        .ng-subscribe-btn {
            background: var(--ng-primary);
            color: #fff;
            font-weight: 600;
            font-size: 14px;
            padding: 12px 28px;
            border-radius: var(--ng-radius-btn);
            transition: var(--ng-transition);
            white-space: nowrap;
            flex-shrink: 0;
        }

        .ng-subscribe-btn:hover {
            background: var(--ng-primary-hover);
            box-shadow: var(--ng-shadow-glow);
            transform: translateY(-1px);
        }

        /* Footer */
        .ng-footer {
            background: #0F0F14;
            border-top: 1px solid var(--ng-border);
            padding: 48px 0 24px;
            margin-top: 0;
        }

        .ng-footer-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }

        @media (min-width: 640px) {
            .ng-footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (min-width: 1024px) {
            .ng-footer-grid {
                grid-template-columns: 2fr 1fr 1fr 1fr;
            }
        }

        .ng-footer-brand {
            font-size: 20px;
            font-weight: 800;
            color: var(--ng-text);
            margin-bottom: 8px;
        }

        .ng-footer-desc {
            font-size: 13px;
            color: var(--ng-weak);
            line-height: 1.8;
        }

        .ng-footer-title {
            font-size: 14px;
            font-weight: 700;
            color: var(--ng-text);
            margin-bottom: 12px;
        }

        .ng-footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .ng-footer-links a {
            font-size: 13px;
            color: var(--ng-weak);
            transition: var(--ng-transition);
        }

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

        .ng-footer-bottom {
            border-top: 1px solid var(--ng-border);
            padding-top: 20px;
            display: flex;
            flex-direction: column;
            gap: 12px;
            font-size: 12px;
            color: var(--ng-weak);
            text-align: center;
        }

        @media (min-width: 768px) {
            .ng-footer-bottom {
                flex-direction: row;
                justify-content: space-between;
                align-items: center;
                text-align: left;
            }
        }

        .ng-footer-bottom-links {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            justify-content: center;
        }

        .ng-footer-bottom-links a {
            color: var(--ng-weak);
            transition: var(--ng-transition);
        }

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

        /* Responsive utility */
        @media (max-width: 767px) {
            .ng-page-header h1 {
                font-size: 28px;
            }

            .ng-section-title {
                font-size: 20px;
            }
        }

/* roulang page: category2 */
:root {
            --ng-bg: #17171C;
            --ng-card: #1F1F28;
            --ng-border: #2E2E3A;
            --ng-primary: #FF7A1A;
            --ng-primary-hover: #FF8C3A;
            --ng-secondary: #3B2E5D;
            --ng-success: #8CE99A;
            --ng-gold: #E8C547;
            --ng-text: #E8E8EC;
            --ng-subtext: #A0A0B0;
            --ng-weak: #6E6E7E;
            --ng-radius: 12px;
            --ng-radius-btn: 8px;
            --ng-radius-sm: 6px;
            --ng-shadow-base: 0 4px 16px rgba(0,0,0,0.35);
            --ng-shadow-hover: 0 8px 28px rgba(0,0,0,0.5);
            --ng-shadow-glow: 0 0 24px rgba(255,122,26,0.35);
            --ng-transition: all 0.25s ease;
        }

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

        body {
            font-family: 'system-ui', '-apple-system', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', 'sans-serif';
            background-color: var(--ng-bg);
            color: var(--ng-text);
            line-height: 1.7;
            font-size: 16px;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: var(--ng-transition);
        }

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

        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            color: inherit;
            outline: none;
            border: none;
            background: none;
        }

        button {
            cursor: pointer;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 32px;
        }

        @media (max-width: 768px) {
            .container {
                padding: 0 20px;
            }
        }

        /* Header / Nav */
        .ng-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 50;
            height: 64px;
            background: rgba(23, 23, 28, 0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--ng-border);
            transition: var(--ng-transition);
        }

        .ng-header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }

        .ng-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 800;
            letter-spacing: -0.01em;
            color: var(--ng-text);
            flex-shrink: 0;
        }

        .ng-logo-icon {
            width: 32px;
            height: 32px;
            border-radius: 8px;
            background: linear-gradient(135deg, var(--ng-primary), var(--ng-secondary));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            font-weight: 900;
            color: #fff;
            flex-shrink: 0;
        }

        .ng-nav-desktop {
            display: none;
            align-items: center;
            gap: 4px;
        }

        @media (min-width: 1024px) {
            .ng-nav-desktop {
                display: flex;
            }
        }

        .ng-nav-link {
            display: inline-flex;
            align-items: center;
            padding: 8px 14px;
            font-size: 14px;
            font-weight: 500;
            color: var(--ng-subtext);
            border-radius: 8px;
            position: relative;
            transition: var(--ng-transition);
            white-space: nowrap;
        }

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

        .ng-nav-link.ng-active {
            color: var(--ng-primary);
        }

        .ng-nav-link.ng-active::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 14px;
            right: 14px;
            height: 2px;
            background: var(--ng-primary);
            border-radius: 2px;
        }

        .ng-nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--ng-primary);
            color: #fff;
            font-weight: 600;
            font-size: 14px;
            padding: 10px 20px;
            border-radius: var(--ng-radius-btn);
            transition: var(--ng-transition);
            white-space: nowrap;
            flex-shrink: 0;
        }

        .ng-nav-cta:hover {
            background: var(--ng-primary-hover);
            box-shadow: var(--ng-shadow-glow);
            transform: translateY(-1px);
        }

        .ng-nav-right {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .ng-hamburger {
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            width: 40px;
            height: 40px;
            border-radius: 8px;
            border: 1px solid var(--ng-border);
            background: transparent;
            gap: 5px;
            transition: var(--ng-transition);
        }

        .ng-hamburger span {
            display: block;
            width: 20px;
            height: 2px;
            background: var(--ng-text);
            border-radius: 2px;
            transition: var(--ng-transition);
        }

        .ng-hamburger:hover {
            border-color: var(--ng-primary);
        }

        @media (min-width: 1024px) {
            .ng-hamburger {
                display: none;
            }
        }

        /* Mobile menu */
        .ng-mobile-menu {
            position: fixed;
            top: 64px;
            left: 0;
            right: 0;
            bottom: 0;
            z-index: 49;
            background: rgba(23, 23, 28, 0.98);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            display: none;
            flex-direction: column;
            padding: 20px;
            overflow-y: auto;
        }

        .ng-mobile-menu.ng-open {
            display: flex;
        }

        .ng-mobile-menu .ng-nav-link {
            display: flex;
            width: 100%;
            padding: 14px 16px;
            font-size: 16px;
            border-bottom: 1px solid var(--ng-border);
            border-radius: 0;
        }

        .ng-mobile-menu .ng-nav-link.ng-active::after {
            display: none;
        }

        .ng-mobile-menu .ng-nav-cta-wrapper {
            margin-top: 16px;
            padding: 0;
        }

        .ng-mobile-menu .ng-nav-cta {
            width: 100%;
            justify-content: center;
            padding: 14px 20px;
            font-size: 16px;
        }

        /* Page specific shared blocks */
        .ng-section {
            padding: 64px 0;
        }

        .ng-section-tight {
            padding: 40px 0;
        }

        .ng-section-alt {
            background: #1B1B22;
            border-top: 1px solid var(--ng-border);
            border-bottom: 1px solid var(--ng-border);
        }

        .ng-section-title {
            font-size: 26px;
            font-weight: 800;
            letter-spacing: -0.01em;
            line-height: 1.3;
            margin-bottom: 8px;
            color: var(--ng-text);
        }

        .ng-section-sub {
            font-size: 15px;
            color: var(--ng-subtext);
            line-height: 1.7;
            max-width: 720px;
            margin-bottom: 32px;
        }

        /* Breadcrumb */
        .ng-breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--ng-weak);
            margin-bottom: 12px;
            flex-wrap: wrap;
        }

        .ng-breadcrumb a {
            color: var(--ng-weak);
            transition: var(--ng-transition);
        }

        .ng-breadcrumb a:hover {
            color: var(--ng-primary);
        }

        .ng-breadcrumb .ng-breadcrumb-sep {
            color: var(--ng-weak);
            user-select: none;
        }

        .ng-breadcrumb .ng-breadcrumb-current {
            color: var(--ng-subtext);
            font-weight: 500;
        }

        /* Page header */
        .ng-page-header {
            padding: 48px 0 28px;
            margin-top: 64px;
            background: linear-gradient(180deg, #1B1B22 0%, var(--ng-bg) 100%);
            border-bottom: 1px solid var(--ng-border);
        }

        .ng-page-header h1 {
            font-size: 34px;
            font-weight: 800;
            letter-spacing: -0.01em;
            line-height: 1.25;
            color: var(--ng-text);
            margin-bottom: 12px;
        }

        .ng-page-header p {
            font-size: 15px;
            color: var(--ng-subtext);
            max-width: 780px;
            line-height: 1.8;
        }

        /* Filter bar */
        .ng-filter-bar {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
            margin: 20px 0 8px;
        }

        .ng-filter-btn {
            display: inline-flex;
            align-items: center;
            padding: 8px 18px;
            font-size: 13px;
            font-weight: 500;
            color: var(--ng-subtext);
            border: 1px solid var(--ng-border);
            border-radius: 999px;
            background: transparent;
            transition: var(--ng-transition);
            cursor: pointer;
        }

        .ng-filter-btn:hover {
            border-color: var(--ng-primary);
            color: var(--ng-text);
        }

        .ng-filter-btn.ng-active {
            background: var(--ng-primary);
            border-color: var(--ng-primary);
            color: #fff;
            font-weight: 600;
        }

        /* Guide cards */
        .ng-guide-card {
            background: var(--ng-card);
            border: 1px solid var(--ng-border);
            border-radius: var(--ng-radius);
            overflow: hidden;
            transition: var(--ng-transition);
            box-shadow: var(--ng-shadow-base);
            display: flex;
            flex-direction: column;
        }

        .ng-guide-card:hover {
            box-shadow: var(--ng-shadow-hover);
            border-color: var(--ng-primary);
            transform: translateY(-3px);
        }

        .ng-guide-card-image {
            width: 100%;
            aspect-ratio: 16 / 9;
            object-fit: cover;
            display: block;
            border-bottom: 1px solid var(--ng-border);
        }

        .ng-guide-card-body {
            padding: 18px 20px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .ng-guide-card-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--ng-text);
            line-height: 1.45;
            margin-bottom: 8px;
            transition: var(--ng-transition);
        }

        .ng-guide-card-title:hover {
            color: var(--ng-primary);
        }

        .ng-guide-card-excerpt {
            font-size: 13px;
            color: var(--ng-subtext);
            line-height: 1.65;
            margin-bottom: 14px;
            flex: 1;
        }

        .ng-guide-card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 10px;
            flex-wrap: wrap;
        }

        .ng-difficulty-tag {
            display: inline-flex;
            align-items: center;
            padding: 4px 12px;
            font-size: 12px;
            font-weight: 600;
            border-radius: 999px;
            background: rgba(255, 122, 26, 0.12);
            color: var(--ng-primary);
            border: 1px solid rgba(255, 122, 26, 0.25);
        }

        .ng-difficulty-tag.ng-difficulty-beginner {
            background: rgba(140, 233, 154, 0.1);
            color: var(--ng-success);
            border-color: rgba(140, 233, 154, 0.25);
        }

        .ng-difficulty-tag.ng-difficulty-advanced {
            background: rgba(232, 197, 71, 0.1);
            color: var(--ng-gold);
            border-color: rgba(232, 197, 71, 0.25);
        }

        .ng-difficulty-tag.ng-difficulty-expert {
            background: rgba(59, 46, 93, 0.5);
            color: #C4B5FD;
            border-color: rgba(59, 46, 93, 0.8);
        }

        .ng-read-count {
            font-size: 12px;
            color: var(--ng-weak);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        /* Feature guide card */
        .ng-feature-guide {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 0;
            background: var(--ng-card);
            border: 1px solid var(--ng-border);
            border-radius: var(--ng-radius);
            overflow: hidden;
            box-shadow: var(--ng-shadow-base);
            transition: var(--ng-transition);
        }

        .ng-feature-guide:hover {
            box-shadow: var(--ng-shadow-hover);
            border-color: var(--ng-primary);
        }

        .ng-feature-guide-image {
            width: 100%;
            height: 100%;
            object-fit: cover;
            display: block;
            border-right: 1px solid var(--ng-border);
        }

        .ng-feature-guide-body {
            padding: 28px 30px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .ng-feature-guide-tag {
            display: inline-flex;
            align-items: center;
            padding: 4px 12px;
            font-size: 12px;
            font-weight: 600;
            border-radius: 999px;
            background: rgba(255, 122, 26, 0.12);
            color: var(--ng-primary);
            border: 1px solid rgba(255, 122, 26, 0.25);
            width: fit-content;
            margin-bottom: 14px;
        }

        .ng-feature-guide-title {
            font-size: 22px;
            font-weight: 800;
            color: var(--ng-text);
            line-height: 1.35;
            margin-bottom: 12px;
        }

        .ng-feature-guide-excerpt {
            font-size: 14px;
            color: var(--ng-subtext);
            line-height: 1.75;
            margin-bottom: 18px;
        }

        .ng-inline-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--ng-primary);
            font-weight: 600;
            font-size: 14px;
            transition: var(--ng-transition);
        }

        .ng-inline-link:hover {
            color: var(--ng-primary-hover);
            gap: 10px;
        }

        /* Ranking list */
        .ng-ranking-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .ng-ranking-item {
            display: flex;
            align-items: center;
            gap: 16px;
            background: var(--ng-card);
            border: 1px solid var(--ng-border);
            border-radius: var(--ng-radius);
            padding: 14px 18px;
            transition: var(--ng-transition);
        }

        .ng-ranking-item:hover {
            border-color: var(--ng-primary);
            transform: translateX(4px);
        }

        .ng-ranking-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            border-radius: 8px;
            font-weight: 800;
            font-size: 15px;
            flex-shrink: 0;
            background: rgba(255, 122, 26, 0.12);
            color: var(--ng-primary);
        }

        .ng-ranking-number.ng-top1 {
            background: var(--ng-primary);
            color: #fff;
        }

        .ng-ranking-number.ng-top2 {
            background: rgba(232, 197, 71, 0.2);
            color: var(--ng-gold);
        }

        .ng-ranking-number.ng-top3 {
            background: rgba(59, 46, 93, 0.6);
            color: #C4B5FD;
        }

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

        .ng-ranking-title {
            font-size: 14px;
            font-weight: 600;
            color: var(--ng-text);
            margin-bottom: 2px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .ng-ranking-meta {
            font-size: 12px;
            color: var(--ng-weak);
        }

        /* Beginner grid */
        .ng-beginner-card {
            background: var(--ng-card);
            border: 1px solid var(--ng-border);
            border-radius: var(--ng-radius);
            padding: 22px 20px;
            transition: var(--ng-transition);
            display: flex;
            flex-direction: column;
            gap: 10px;
            box-shadow: var(--ng-shadow-base);
        }

        .ng-beginner-card:hover {
            border-color: var(--ng-primary);
            transform: translateY(-3px);
            box-shadow: var(--ng-shadow-hover);
        }

        .ng-beginner-card-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 28px;
            height: 28px;
            border-radius: 6px;
            background: rgba(255, 122, 26, 0.15);
            color: var(--ng-primary);
            font-weight: 700;
            font-size: 13px;
        }

        .ng-beginner-card h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--ng-text);
            line-height: 1.4;
        }

        .ng-beginner-card p {
            font-size: 13px;
            color: var(--ng-subtext);
            line-height: 1.65;
        }

        /* Advanced tips */
        .ng-tip-card {
            background: var(--ng-card);
            border: 1px solid var(--ng-border);
            border-radius: var(--ng-radius);
            padding: 24px 22px;
            transition: var(--ng-transition);
            box-shadow: var(--ng-shadow-base);
            border-left: 3px solid var(--ng-primary);
        }

        .ng-tip-card:hover {
            box-shadow: var(--ng-shadow-hover);
            border-color: var(--ng-primary);
        }

        .ng-tip-card h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--ng-text);
            margin-bottom: 8px;
        }

        .ng-tip-card p {
            font-size: 13px;
            color: var(--ng-subtext);
            line-height: 1.7;
        }

        /* Submission CTA */
        .ng-submit-box {
            background: var(--ng-card);
            border: 1px solid var(--ng-border);
            border-radius: var(--ng-radius);
            padding: 28px 30px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 20px;
        }

        .ng-submit-box h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--ng-text);
            margin-bottom: 6px;
        }

        .ng-submit-box p {
            font-size: 13px;
            color: var(--ng-subtext);
        }

        .ng-btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--ng-primary);
            color: #fff;
            font-weight: 600;
            font-size: 14px;
            padding: 12px 24px;
            border-radius: var(--ng-radius-btn);
            transition: var(--ng-transition);
            border: none;
            cursor: pointer;
        }

        .ng-btn-primary:hover {
            background: var(--ng-primary-hover);
            box-shadow: var(--ng-shadow-glow);
            transform: translateY(-1px);
        }

        .ng-btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: transparent;
            color: var(--ng-text);
            font-weight: 500;
            font-size: 14px;
            padding: 12px 24px;
            border-radius: var(--ng-radius-btn);
            border: 1px solid var(--ng-border);
            transition: var(--ng-transition);
            cursor: pointer;
        }

        .ng-btn-secondary:hover {
            border-color: var(--ng-primary);
            color: var(--ng-primary);
        }

        /* FAQ */
        .ng-faq-item {
            border-bottom: 1px solid var(--ng-border);
        }

        .ng-faq-item:last-child {
            border-bottom: none;
        }

        .ng-faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            width: 100%;
            padding: 18px 0;
            text-align: left;
            font-size: 15px;
            font-weight: 600;
            color: var(--ng-text);
            transition: var(--ng-transition);
            cursor: pointer;
            background: transparent;
            border: none;
        }

        .ng-faq-question:hover {
            color: var(--ng-primary);
        }

        .ng-faq-icon {
            flex-shrink: 0;
            width: 20px;
            height: 20px;
            position: relative;
            transition: var(--ng-transition);
        }

        .ng-faq-icon::before,
        .ng-faq-icon::after {
            content: '';
            position: absolute;
            background: var(--ng-subtext);
            border-radius: 2px;
            transition: var(--ng-transition);
        }

        .ng-faq-icon::before {
            width: 12px;
            height: 2px;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
        }

        .ng-faq-icon::after {
            width: 2px;
            height: 12px;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
        }

        .ng-faq-item.ng-open .ng-faq-icon::after {
            transform: translate(-50%, -50%) scaleY(0);
        }

        .ng-faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.3s ease;
            font-size: 14px;
            color: var(--ng-subtext);
            line-height: 1.75;
        }

        .ng-faq-item.ng-open .ng-faq-answer {
            max-height: 260px;
            padding: 0 0 20px;
        }

        /* Subscribe CTA */
        .ng-subscribe-box {
            background: var(--ng-card);
            border: 1px solid var(--ng-border);
            border-radius: var(--ng-radius);
            padding: 32px 30px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
        }

        .ng-subscribe-box h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--ng-text);
            margin-bottom: 4px;
        }

        .ng-subscribe-box p {
            font-size: 13px;
            color: var(--ng-subtext);
        }

        .ng-subscribe-form {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
        }

        .ng-input {
            background: var(--ng-bg);
            border: 1px solid var(--ng-border);
            border-radius: var(--ng-radius-sm);
            padding: 12px 16px;
            font-size: 14px;
            color: var(--ng-text);
            min-width: 240px;
            transition: var(--ng-transition);
        }

        .ng-input::placeholder {
            color: var(--ng-weak);
        }

        .ng-input:focus {
            border-color: var(--ng-primary);
            box-shadow: 0 0 0 3px rgba(255, 122, 26, 0.15);
        }

        /* Footer */
        .ng-footer {
            background: #0F0F14;
            padding: 48px 0 28px;
            border-top: 1px solid var(--ng-border);
            margin-top: 64px;
        }

        .ng-footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            margin-bottom: 32px;
        }

        @media (max-width: 768px) {
            .ng-footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
        }

        @media (max-width: 520px) {
            .ng-footer-grid {
                grid-template-columns: 1fr;
            }
        }

        .ng-footer-brand {
            font-size: 22px;
            font-weight: 800;
            color: var(--ng-text);
            margin-bottom: 10px;
        }

        .ng-footer-desc {
            font-size: 13px;
            color: var(--ng-weak);
            line-height: 1.65;
            max-width: 260px;
        }

        .ng-footer-title {
            font-size: 14px;
            font-weight: 700;
            color: var(--ng-text);
            margin-bottom: 14px;
        }

        .ng-footer-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .ng-footer-links a {
            font-size: 13px;
            color: var(--ng-weak);
            transition: var(--ng-transition);
        }

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

        .ng-footer-bottom {
            border-top: 1px solid var(--ng-border);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            font-size: 12px;
            color: var(--ng-weak);
        }

        .ng-footer-bottom-links {
            display: flex;
            gap: 16px;
        }

        .ng-footer-bottom-links a {
            color: var(--ng-weak);
            transition: var(--ng-transition);
        }

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

        /* Responsive feature guide */
        @media (max-width: 768px) {
            .ng-feature-guide {
                grid-template-columns: 1fr;
            }

            .ng-feature-guide-image {
                border-right: none;
                border-bottom: 1px solid var(--ng-border);
                aspect-ratio: 16 / 9;
                height: auto;
            }

            .ng-feature-guide-body {
                padding: 20px;
            }

            .ng-page-header h1 {
                font-size: 26px;
            }

            .ng-section {
                padding: 40px 0;
            }

            .ng-section-title {
                font-size: 22px;
            }

            .ng-submit-box,
            .ng-subscribe-box {
                flex-direction: column;
                align-items: flex-start;
            }

            .ng-input {
                min-width: 100%;
                width: 100%;
            }
        }

/* roulang page: category3 */
:root {
            --ng-bg: #17171C;
            --ng-card: #1F1F28;
            --ng-border: #2E2E3A;
            --ng-primary: #FF7A1A;
            --ng-primary-hover: #FF8C3A;
            --ng-secondary: #3B2E5D;
            --ng-success: #8CE99A;
            --ng-gold: #E8C547;
            --ng-text: #E8E8EC;
            --ng-subtext: #A0A0B0;
            --ng-weak: #6E6E7E;
            --ng-radius: 12px;
            --ng-radius-btn: 8px;
            --ng-radius-sm: 6px;
            --ng-shadow-base: 0 4px 16px rgba(0, 0, 0, 0.35);
            --ng-shadow-hover: 0 8px 28px rgba(0, 0, 0, 0.5);
            --ng-shadow-glow: 0 0 24px rgba(255, 122, 26, 0.35);
            --ng-transition: all 0.25s ease;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

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

        body {
            font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            background-color: var(--ng-bg);
            color: var(--ng-text);
            line-height: 1.7;
            font-size: 16px;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: var(--ng-transition);
        }

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

        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            color: inherit;
            outline: none;
            border: none;
            background: none;
        }

        button {
            cursor: pointer;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 32px;
        }

        /* Header / Nav */
        .ng-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 50;
            height: 64px;
            background: rgba(23, 23, 28, 0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--ng-border);
            transition: var(--ng-transition);
        }

        .ng-header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }

        .ng-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 800;
            letter-spacing: -0.01em;
            color: var(--ng-text);
            flex-shrink: 0;
        }

        .ng-logo-icon {
            width: 32px;
            height: 32px;
            border-radius: 8px;
            background: linear-gradient(135deg, var(--ng-primary), var(--ng-secondary));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            font-weight: 900;
            color: #fff;
            flex-shrink: 0;
        }

        .ng-nav-desktop {
            display: none;
            align-items: center;
            gap: 4px;
        }

        .ng-nav-link {
            display: inline-flex;
            align-items: center;
            padding: 8px 14px;
            font-size: 14px;
            font-weight: 500;
            color: var(--ng-subtext);
            border-radius: 8px;
            position: relative;
            transition: var(--ng-transition);
            white-space: nowrap;
        }

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

        .ng-nav-link.ng-active {
            color: var(--ng-primary);
        }

        .ng-nav-link.ng-active::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 14px;
            right: 14px;
            height: 2px;
            background: var(--ng-primary);
            border-radius: 2px;
        }

        .ng-nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--ng-primary);
            color: #fff;
            font-weight: 600;
            font-size: 14px;
            padding: 10px 20px;
            border-radius: var(--ng-radius-btn);
            transition: var(--ng-transition);
            white-space: nowrap;
            flex-shrink: 0;
        }

        .ng-nav-cta:hover {
            background: var(--ng-primary-hover);
            box-shadow: var(--ng-shadow-glow);
            transform: translateY(-1px);
        }

        .ng-nav-right {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .ng-hamburger {
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            width: 40px;
            height: 40px;
            border-radius: 8px;
            border: 1px solid var(--ng-border);
            background: transparent;
            gap: 5px;
            transition: var(--ng-transition);
        }

        .ng-hamburger span {
            display: block;
            width: 20px;
            height: 2px;
            background: var(--ng-text);
            border-radius: 2px;
            transition: var(--ng-transition);
        }

        .ng-hamburger:hover {
            border-color: var(--ng-primary);
        }

        .ng-nav-cta-mobile-hide {
            display: none;
        }

        /* Mobile menu */
        .ng-mobile-menu {
            position: fixed;
            top: 64px;
            left: 0;
            right: 0;
            bottom: 0;
            z-index: 49;
            background: rgba(23, 23, 28, 0.98);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            display: none;
            flex-direction: column;
            padding: 20px;
            overflow-y: auto;
        }

        .ng-mobile-menu.ng-open {
            display: flex;
        }

        .ng-mobile-menu .ng-mobile-cta {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            background: var(--ng-primary);
            color: #fff;
            font-weight: 600;
            font-size: 16px;
            padding: 14px 24px;
            border-radius: var(--ng-radius-btn);
            margin-bottom: 16px;
            transition: var(--ng-transition);
        }

        .ng-mobile-menu .ng-mobile-cta:hover {
            background: var(--ng-primary-hover);
        }

        .ng-mobile-menu .ng-mobile-link {
            display: flex;
            align-items: center;
            height: 44px;
            font-size: 15px;
            color: var(--ng-subtext);
            border-bottom: 1px solid var(--ng-border);
            transition: var(--ng-transition);
        }

        .ng-mobile-menu .ng-mobile-link:hover {
            color: var(--ng-text);
            padding-left: 8px;
        }

        .ng-mobile-menu .ng-mobile-link.ng-active {
            color: var(--ng-primary);
        }

        /* Breadcrumb */
        .ng-breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--ng-weak);
            padding: 20px 0 8px;
            flex-wrap: wrap;
        }

        .ng-breadcrumb a {
            color: var(--ng-weak);
            transition: var(--ng-transition);
        }

        .ng-breadcrumb a:hover {
            color: var(--ng-primary);
        }

        .ng-breadcrumb .ng-breadcrumb-sep {
            color: var(--ng-weak);
            user-select: none;
        }

        .ng-breadcrumb .ng-breadcrumb-current {
            color: var(--ng-subtext);
        }

        /* Page Header */
        .ng-page-header {
            padding: 40px 0 32px;
            border-bottom: 1px solid var(--ng-border);
            background: linear-gradient(180deg, rgba(59, 46, 93, 0.15) 0%, rgba(23, 23, 28, 0) 100%);
        }

        .ng-page-header h1 {
            font-size: 34px;
            font-weight: 800;
            letter-spacing: -0.01em;
            color: var(--ng-text);
            line-height: 1.3;
            margin-bottom: 12px;
        }

        .ng-page-header p {
            font-size: 16px;
            color: var(--ng-subtext);
            max-width: 680px;
            line-height: 1.8;
        }

        /* Filter bar */
        .ng-filter-bar {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
            padding: 20px 0;
        }

        .ng-filter-chip {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            border-radius: 20px;
            border: 1px solid var(--ng-border);
            background: var(--ng-card);
            font-size: 13px;
            color: var(--ng-subtext);
            cursor: pointer;
            transition: var(--ng-transition);
            white-space: nowrap;
        }

        .ng-filter-chip:hover {
            border-color: var(--ng-primary);
            color: var(--ng-text);
        }

        .ng-filter-chip.ng-active {
            border-color: var(--ng-primary);
            color: var(--ng-primary);
            background: rgba(255, 122, 26, 0.08);
        }

        /* Timeline */
        .ng-timeline {
            position: relative;
            padding: 40px 0;
        }

        .ng-timeline::before {
            content: '';
            position: absolute;
            left: 20px;
            top: 60px;
            bottom: 60px;
            width: 2px;
            background: linear-gradient(180deg, var(--ng-border), var(--ng-secondary), var(--ng-border));
            border-radius: 2px;
        }

        .ng-timeline-item {
            position: relative;
            padding-left: 60px;
            margin-bottom: 48px;
        }

        .ng-timeline-item:last-child {
            margin-bottom: 0;
        }

        .ng-timeline-dot {
            position: absolute;
            left: 11px;
            top: 6px;
            width: 20px;
            height: 20px;
            border-radius: 50%;
            background: var(--ng-card);
            border: 3px solid var(--ng-primary);
            z-index: 2;
            box-shadow: 0 0 12px rgba(255, 122, 26, 0.3);
        }

        .ng-timeline-dot.ng-minor {
            border-color: var(--ng-secondary);
            box-shadow: 0 0 8px rgba(59, 46, 93, 0.3);
        }

        .ng-timeline-card {
            background: var(--ng-card);
            border: 1px solid var(--ng-border);
            border-radius: var(--ng-radius);
            padding: 28px;
            box-shadow: var(--ng-shadow-base);
            transition: var(--ng-transition);
        }

        .ng-timeline-card:hover {
            border-color: rgba(255, 122, 26, 0.5);
            box-shadow: var(--ng-shadow-hover);
            transform: translateY(-2px);
        }

        .ng-timeline-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            margin-bottom: 16px;
        }

        .ng-version-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--ng-secondary);
            color: var(--ng-text);
            font-size: 15px;
            font-weight: 700;
            padding: 6px 14px;
            border-radius: var(--ng-radius-sm);
            letter-spacing: 0.02em;
        }

        .ng-version-badge.ng-latest {
            background: var(--ng-primary);
            color: #fff;
        }

        .ng-timeline-date {
            font-size: 13px;
            color: var(--ng-weak);
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .ng-timeline-updates {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .ng-timeline-updates li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 14px;
            color: var(--ng-subtext);
            line-height: 1.7;
        }

        .ng-timeline-updates li::before {
            content: '';
            flex-shrink: 0;
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--ng-primary);
            margin-top: 9px;
        }

        .ng-timeline-updates li.ng-feature::before {
            background: var(--ng-gold);
        }
        .ng-timeline-updates li.ng-fix::before {
            background: var(--ng-success);
        }

        .ng-tag {
            display: inline-flex;
            align-items: center;
            font-size: 12px;
            padding: 3px 10px;
            border-radius: 12px;
            font-weight: 500;
            flex-shrink: 0;
        }
        .ng-tag-feature {
            background: rgba(232, 197, 71, 0.12);
            color: var(--ng-gold);
            border: 1px solid rgba(232, 197, 71, 0.25);
        }
        .ng-tag-fix {
            background: rgba(140, 233, 154, 0.1);
            color: var(--ng-success);
            border: 1px solid rgba(140, 233, 154, 0.2);
        }
        .ng-tag-opt {
            background: rgba(255, 122, 26, 0.1);
            color: var(--ng-primary);
            border: 1px solid rgba(255, 122, 26, 0.2);
        }

        /* Review summary */
        .ng-summary-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
            padding: 40px 0;
        }

        .ng-summary-card {
            background: var(--ng-card);
            border: 1px solid var(--ng-border);
            border-radius: var(--ng-radius);
            padding: 24px;
            display: flex;
            flex-direction: column;
            gap: 8px;
            transition: var(--ng-transition);
        }

        .ng-summary-card:hover {
            border-color: rgba(255, 122, 26, 0.4);
            transform: translateY(-2px);
            box-shadow: var(--ng-shadow-hover);
        }

        .ng-summary-number {
            font-size: 32px;
            font-weight: 800;
            color: var(--ng-primary);
            letter-spacing: -0.02em;
            line-height: 1.2;
        }

        .ng-summary-label {
            font-size: 14px;
            color: var(--ng-subtext);
        }

        /* Highlight card */
        .ng-highlight-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
            padding: 40px 0;
        }

        .ng-highlight-card {
            background: var(--ng-card);
            border: 1px solid var(--ng-border);
            border-radius: var(--ng-radius);
            overflow: hidden;
            transition: var(--ng-transition);
        }

        .ng-highlight-card:hover {
            border-color: rgba(255, 122, 26, 0.45);
            box-shadow: var(--ng-shadow-hover);
            transform: translateY(-3px);
        }

        .ng-highlight-card img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            border-bottom: 1px solid var(--ng-border);
        }

        .ng-highlight-body {
            padding: 20px;
        }

        .ng-highlight-body h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--ng-text);
            margin-bottom: 8px;
            letter-spacing: -0.01em;
        }

        .ng-highlight-body p {
            font-size: 14px;
            color: var(--ng-subtext);
            line-height: 1.7;
        }

        /* Compatibility table */
        .ng-compat-table-wrap {
            overflow-x: auto;
            padding: 40px 0;
        }

        .ng-compat-table {
            width: 100%;
            border-collapse: collapse;
            font-size: 14px;
            min-width: 600px;
        }

        .ng-compat-table th {
            text-align: left;
            padding: 14px 16px;
            color: var(--ng-subtext);
            font-weight: 600;
            font-size: 13px;
            border-bottom: 1px solid var(--ng-border);
            background: rgba(255, 255, 255, 0.02);
            white-space: nowrap;
        }

        .ng-compat-table td {
            padding: 14px 16px;
            color: var(--ng-subtext);
            border-bottom: 1px solid var(--ng-border);
            line-height: 1.6;
        }

        .ng-compat-table tr:hover td {
            background: rgba(255, 255, 255, 0.02);
        }

        .ng-compat-table .ng-compat-label {
            color: var(--ng-text);
            font-weight: 600;
            white-space: nowrap;
        }

        .ng-status-dot {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .ng-status-dot::before {
            content: '';
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--ng-success);
            flex-shrink: 0;
        }

        /* CTA Section */
        .ng-cta-section {
            padding: 60px 0;
            background: linear-gradient(135deg, rgba(59, 46, 93, 0.3) 0%, rgba(23, 23, 28, 0.95) 60%);
            border: 1px solid var(--ng-border);
            border-radius: var(--ng-radius);
            margin-bottom: 48px;
            text-align: center;
        }

        .ng-cta-section h2 {
            font-size: 26px;
            font-weight: 800;
            color: var(--ng-text);
            margin-bottom: 12px;
            letter-spacing: -0.01em;
        }

        .ng-cta-section p {
            font-size: 15px;
            color: var(--ng-subtext);
            max-width: 560px;
            margin: 0 auto 24px;
            line-height: 1.8;
        }

        .ng-btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--ng-primary);
            color: #fff;
            font-weight: 600;
            font-size: 15px;
            padding: 14px 32px;
            border-radius: var(--ng-radius-btn);
            transition: var(--ng-transition);
            white-space: nowrap;
        }

        .ng-btn-primary:hover {
            background: var(--ng-primary-hover);
            box-shadow: var(--ng-shadow-glow);
            transform: translateY(-1px);
        }

        .ng-btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            border: 1px solid var(--ng-border);
            color: var(--ng-text);
            font-weight: 500;
            font-size: 15px;
            padding: 13px 28px;
            border-radius: var(--ng-radius-btn);
            transition: var(--ng-transition);
            white-space: nowrap;
        }
        .ng-btn-secondary:hover {
            border-color: var(--ng-primary);
            color: var(--ng-primary);
        }

        /* Section title */
        .ng-section-title {
            font-size: 24px;
            font-weight: 800;
            color: var(--ng-text);
            letter-spacing: -0.01em;
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .ng-section-subtitle {
            font-size: 15px;
            color: var(--ng-subtext);
            max-width: 640px;
            line-height: 1.8;
        }

        .ng-section-head {
            margin-bottom: 24px;
        }

        /* Footer */
        .ng-footer {
            background: #0F0F14;
            border-top: 1px solid var(--ng-border);
            padding: 48px 0 24px;
            margin-top: 40px;
        }

        .ng-footer-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }

        .ng-footer-brand {
            font-size: 22px;
            font-weight: 800;
            color: var(--ng-text);
            margin-bottom: 12px;
            letter-spacing: -0.01em;
        }

        .ng-footer-desc {
            font-size: 14px;
            color: var(--ng-weak);
            line-height: 1.8;
            max-width: 320px;
        }

        .ng-footer-title {
            font-size: 15px;
            font-weight: 700;
            color: var(--ng-text);
            margin-bottom: 14px;
        }

        .ng-footer-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .ng-footer-links a {
            font-size: 14px;
            color: var(--ng-weak);
            transition: var(--ng-transition);
        }

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

        .ng-footer-bottom {
            border-top: 1px solid var(--ng-border);
            padding-top: 20px;
            display: flex;
            flex-direction: column;
            gap: 8px;
            font-size: 13px;
            color: var(--ng-weak);
        }

        .ng-footer-bottom-links {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        .ng-footer-bottom-links a {
            color: var(--ng-weak);
            transition: var(--ng-transition);
        }

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

        /* Responsive */
        @media (min-width: 768px) {
            .ng-nav-desktop {
                display: flex;
            }
            .ng-nav-cta-mobile-hide {
                display: inline-flex;
            }
            .ng-hamburger {
                display: none;
            }
            .ng-summary-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 24px;
            }
            .ng-highlight-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
            .ng-timeline::before {
                left: 28px;
            }
            .ng-timeline-item {
                padding-left: 72px;
            }
            .ng-timeline-dot {
                left: 19px;
                width: 22px;
                height: 22px;
            }
        }

        @media (min-width: 1024px) {
            .container {
                padding: 0 40px;
            }
            .ng-summary-grid {
                grid-template-columns: repeat(4, 1fr);
            }
            .ng-highlight-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .ng-footer-grid {
                grid-template-columns: 2fr 1fr 1fr 1fr;
                gap: 48px;
            }
            .ng-footer-bottom {
                flex-direction: row;
                justify-content: space-between;
                align-items: center;
            }
            .ng-page-header h1 {
                font-size: 38px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 20px;
            }
            .ng-page-header h1 {
                font-size: 26px;
            }
            .ng-timeline-card {
                padding: 20px;
            }
            .ng-timeline-item {
                padding-left: 52px;
                margin-bottom: 32px;
            }
            .ng-timeline::before {
                left: 15px;
            }
            .ng-timeline-dot {
                left: 7px;
                width: 18px;
                height: 18px;
            }
            .ng-cta-section {
                padding: 40px 20px;
            }
            .ng-cta-section h2 {
                font-size: 22px;
            }
            .ng-section-title {
                font-size: 20px;
            }
            .ng-nav-cta-mobile-hide {
                display: none;
            }
            .ng-hamburger {
                display: flex;
            }
        }

        @media (min-width: 521px) and (max-width: 767px) {
            .ng-nav-desktop {
                display: none;
            }
            .ng-nav-cta-mobile-hide {
                display: none;
            }
            .ng-hamburger {
                display: flex;
            }
        }

/* roulang page: category5 */
:root {
            --ng-bg: #17171C;
            --ng-card: #1F1F28;
            --ng-border: #2E2E3A;
            --ng-primary: #FF7A1A;
            --ng-primary-hover: #FF8C3A;
            --ng-secondary: #3B2E5D;
            --ng-success: #8CE99A;
            --ng-gold: #E8C547;
            --ng-text: #E8E8EC;
            --ng-subtext: #A0A0B0;
            --ng-weak: #6E6E7E;
            --ng-radius: 12px;
            --ng-radius-btn: 8px;
            --ng-radius-sm: 6px;
            --ng-shadow-base: 0 4px 16px rgba(0, 0, 0, 0.35);
            --ng-shadow-hover: 0 8px 28px rgba(0, 0, 0, 0.5);
            --ng-shadow-glow: 0 0 24px rgba(255, 122, 26, 0.35);
            --ng-transition: all 0.25s ease;
        }

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

        body {
            font-family: 'system-ui', '-apple-system', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', 'sans-serif';
            background-color: var(--ng-bg);
            color: var(--ng-text);
            line-height: 1.7;
            font-size: 16px;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
            padding-top: 64px;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: var(--ng-transition);
        }

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

        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            color: inherit;
            outline: none;
            border: none;
            background: none;
        }

        button {
            cursor: pointer;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        @media (min-width: 768px) {
            .container {
                padding: 0 32px;
            }
        }

        @media (min-width: 1024px) {
            .container {
                padding: 0 40px;
            }
        }

        /* Header / Nav */
        .ng-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 50;
            height: 64px;
            background: rgba(23, 23, 28, 0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--ng-border);
            transition: var(--ng-transition);
        }

        .ng-header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }

        .ng-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 800;
            letter-spacing: -0.01em;
            color: var(--ng-text);
            flex-shrink: 0;
        }

        .ng-logo-icon {
            width: 32px;
            height: 32px;
            border-radius: 8px;
            background: linear-gradient(135deg, var(--ng-primary), var(--ng-secondary));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            font-weight: 900;
            color: #fff;
            flex-shrink: 0;
        }

        .ng-nav-desktop {
            display: none;
            align-items: center;
            gap: 4px;
        }

        @media (min-width: 1024px) {
            .ng-nav-desktop {
                display: flex;
            }
        }

        .ng-nav-link {
            display: inline-flex;
            align-items: center;
            padding: 8px 14px;
            font-size: 14px;
            font-weight: 500;
            color: var(--ng-subtext);
            border-radius: 8px;
            position: relative;
            transition: var(--ng-transition);
            white-space: nowrap;
        }

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

        .ng-nav-link.ng-active {
            color: var(--ng-primary);
        }

        .ng-nav-link.ng-active::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 14px;
            right: 14px;
            height: 2px;
            background: var(--ng-primary);
            border-radius: 2px;
        }

        .ng-nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--ng-primary);
            color: #fff;
            font-weight: 600;
            font-size: 14px;
            padding: 10px 20px;
            border-radius: var(--ng-radius-btn);
            transition: var(--ng-transition);
            white-space: nowrap;
            flex-shrink: 0;
        }

        .ng-nav-cta:hover {
            background: var(--ng-primary-hover);
            box-shadow: var(--ng-shadow-glow);
            transform: translateY(-1px);
        }

        .ng-nav-right {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .ng-hamburger {
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            width: 40px;
            height: 40px;
            border-radius: 8px;
            border: 1px solid var(--ng-border);
            background: transparent;
            gap: 5px;
            transition: var(--ng-transition);
        }

        .ng-hamburger span {
            display: block;
            width: 20px;
            height: 2px;
            background: var(--ng-text);
            border-radius: 2px;
            transition: var(--ng-transition);
        }

        .ng-hamburger:hover {
            border-color: var(--ng-primary);
        }

        @media (min-width: 1024px) {
            .ng-hamburger {
                display: none;
            }
        }

        /* Mobile menu */
        .ng-mobile-menu {
            position: fixed;
            top: 64px;
            left: 0;
            right: 0;
            bottom: 0;
            z-index: 49;
            background: rgba(23, 23, 28, 0.98);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            display: none;
            flex-direction: column;
            padding: 20px;
            overflow-y: auto;
        }

        .ng-mobile-menu.ng-open {
            display: flex;
        }

        .ng-mobile-menu .ng-nav-link {
            display: flex;
            width: 100%;
            padding: 14px 16px;
            font-size: 16px;
            border-radius: 10px;
            margin-bottom: 4px;
        }

        .ng-mobile-menu .ng-nav-link.ng-active {
            background: rgba(255, 122, 26, 0.1);
            color: var(--ng-primary);
        }

        .ng-mobile-menu .ng-nav-cta {
            margin-top: 16px;
            justify-content: center;
            width: 100%;
            padding: 14px 20px;
            font-size: 16px;
        }

        /* Breadcrumb */
        .ng-breadcrumb {
            padding: 28px 0 8px;
            font-size: 13px;
            color: var(--ng-weak);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .ng-breadcrumb a:hover {
            color: var(--ng-primary);
        }
        .ng-breadcrumb .ng-breadcrumb-sep {
            color: var(--ng-weak);
            user-select: none;
        }
        .ng-breadcrumb .ng-breadcrumb-current {
            color: var(--ng-subtext);
        }

        /* Compact page header (not full hero) */
        .ng-page-header {
            padding: 16px 0 24px;
            border-bottom: 1px solid var(--ng-border);
            margin-bottom: 28px;
        }
        .ng-page-header h1 {
            font-size: 32px;
            font-weight: 800;
            letter-spacing: -0.01em;
            color: var(--ng-text);
            margin-bottom: 8px;
            line-height: 1.3;
        }
        @media (min-width: 768px) {
            .ng-page-header h1 {
                font-size: 38px;
            }
        }
        .ng-page-header .ng-page-header-desc {
            font-size: 15px;
            color: var(--ng-subtext);
            max-width: 680px;
            line-height: 1.8;
        }

        /* Filter bar */
        .ng-filter-bar {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 28px;
        }
        .ng-filter-chip {
            padding: 8px 18px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 500;
            color: var(--ng-subtext);
            background: var(--ng-card);
            border: 1px solid var(--ng-border);
            transition: var(--ng-transition);
            cursor: pointer;
        }
        .ng-filter-chip:hover {
            border-color: var(--ng-primary);
            color: var(--ng-text);
        }
        .ng-filter-chip.ng-chip-active {
            background: var(--ng-primary);
            color: #fff;
            border-color: var(--ng-primary);
        }

        /* News list main */
        .ng-news-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 24px;
            margin-bottom: 48px;
        }
        @media (min-width: 768px) {
            .ng-news-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 28px;
            }
        }

        .ng-news-card {
            background: var(--ng-card);
            border: 1px solid var(--ng-border);
            border-radius: var(--ng-radius);
            overflow: hidden;
            transition: var(--ng-transition);
            display: flex;
            flex-direction: column;
        }
        .ng-news-card:hover {
            border-color: var(--ng-primary);
            box-shadow: var(--ng-shadow-hover);
            transform: translateY(-3px);
        }
        .ng-news-card-img-wrap {
            position: relative;
            width: 100%;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            border-bottom: 1px solid var(--ng-border);
            background: var(--ng-secondary);
        }
        .ng-news-card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .ng-news-card:hover .ng-news-card-img-wrap img {
            transform: scale(1.04);
        }
        .ng-news-card-body {
            padding: 18px 20px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .ng-news-card-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: 4px;
            background: rgba(255, 122, 26, 0.12);
            color: var(--ng-primary);
            margin-bottom: 10px;
            width: fit-content;
        }
        .ng-news-card-title {
            font-size: 17px;
            font-weight: 700;
            line-height: 1.5;
            color: var(--ng-text);
            margin-bottom: 8px;
            letter-spacing: -0.01em;
        }
        .ng-news-card-excerpt {
            font-size: 13px;
            color: var(--ng-subtext);
            line-height: 1.7;
            margin-bottom: 14px;
            flex: 1;
        }
        .ng-news-card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 12px;
            color: var(--ng-weak);
            border-top: 1px solid var(--ng-border);
            padding-top: 14px;
        }
        .ng-news-card-meta .ng-meta-dot {
            width: 4px;
            height: 4px;
            border-radius: 50%;
            background: var(--ng-weak);
        }

        /* Hot news section */
        .ng-section-title {
            font-size: 22px;
            font-weight: 700;
            letter-spacing: -0.01em;
            color: var(--ng-text);
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .ng-section-title::before {
            content: '';
            width: 4px;
            height: 20px;
            background: var(--ng-primary);
            border-radius: 2px;
        }

        .ng-hot-list {
            display: grid;
            grid-template-columns: 1fr;
            gap: 12px;
            margin-bottom: 48px;
        }
        @media (min-width: 768px) {
            .ng-hot-list {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
        }
        .ng-hot-item {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 14px 16px;
            background: var(--ng-card);
            border: 1px solid var(--ng-border);
            border-radius: var(--ng-radius-sm);
            transition: var(--ng-transition);
        }
        .ng-hot-item:hover {
            border-color: var(--ng-primary);
            box-shadow: var(--ng-shadow-base);
        }
        .ng-hot-rank {
            font-size: 22px;
            font-weight: 800;
            color: var(--ng-weak);
            width: 36px;
            text-align: center;
            flex-shrink: 0;
        }
        .ng-hot-rank.ng-rank-top1 {
            color: var(--ng-gold);
        }
        .ng-hot-rank.ng-rank-top2 {
            color: var(--ng-primary);
        }
        .ng-hot-rank.ng-rank-top3 {
            color: var(--ng-success);
        }
        .ng-hot-info {
            flex: 1;
            min-width: 0;
        }
        .ng-hot-info h4 {
            font-size: 14px;
            font-weight: 600;
            color: var(--ng-text);
            line-height: 1.5;
            margin-bottom: 4px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .ng-hot-info span {
            font-size: 12px;
            color: var(--ng-weak);
        }

        /* Special report section */
        .ng-special-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 18px;
            margin-bottom: 48px;
        }
        @media (min-width: 768px) {
            .ng-special-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 20px;
            }
        }
        .ng-special-card {
            background: var(--ng-card);
            border: 1px solid var(--ng-border);
            border-radius: var(--ng-radius);
            overflow: hidden;
            transition: var(--ng-transition);
        }
        .ng-special-card:hover {
            border-color: var(--ng-primary);
            box-shadow: var(--ng-shadow-hover);
            transform: translateY(-3px);
        }
        .ng-special-card-img {
            width: 100%;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            border-bottom: 1px solid var(--ng-border);
        }
        .ng-special-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .ng-special-card-body {
            padding: 16px 18px 18px;
        }
        .ng-special-card-body h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--ng-text);
            line-height: 1.5;
            margin-bottom: 6px;
        }
        .ng-special-card-body p {
            font-size: 13px;
            color: var(--ng-subtext);
            line-height: 1.7;
        }

        /* Subscribe CTA */
        .ng-subscribe-section {
            background: linear-gradient(135deg, #1F1F28 0%, #2a1f3d 100%);
            border: 1px solid var(--ng-border);
            border-radius: var(--ng-radius);
            padding: 32px 24px;
            margin-bottom: 48px;
            text-align: center;
        }
        @media (min-width: 768px) {
            .ng-subscribe-section {
                padding: 40px 48px;
            }
        }
        .ng-subscribe-section h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--ng-text);
            margin-bottom: 8px;
            letter-spacing: -0.01em;
        }
        .ng-subscribe-section p {
            font-size: 14px;
            color: var(--ng-subtext);
            margin-bottom: 20px;
        }
        .ng-subscribe-form {
            display: flex;
            flex-direction: column;
            gap: 12px;
            max-width: 460px;
            margin: 0 auto;
        }
        @media (min-width: 640px) {
            .ng-subscribe-form {
                flex-direction: row;
                gap: 0;
            }
        }
        .ng-subscribe-form input {
            flex: 1;
            padding: 12px 16px;
            background: var(--ng-bg);
            border: 1px solid var(--ng-border);
            border-radius: var(--ng-radius-sm);
            font-size: 14px;
            color: var(--ng-text);
            transition: var(--ng-transition);
        }
        .ng-subscribe-form input::placeholder {
            color: var(--ng-weak);
        }
        .ng-subscribe-form input:focus {
            border-color: var(--ng-primary);
        }
        .ng-subscribe-btn {
            padding: 12px 24px;
            background: var(--ng-primary);
            color: #fff;
            font-weight: 600;
            font-size: 14px;
            border-radius: var(--ng-radius-sm);
            transition: var(--ng-transition);
            white-space: nowrap;
        }
        .ng-subscribe-btn:hover {
            background: var(--ng-primary-hover);
            box-shadow: var(--ng-shadow-glow);
        }

        /* Social links */
        .ng-social-section {
            margin-bottom: 48px;
        }
        .ng-social-links {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }
        .ng-social-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 20px;
            background: var(--ng-card);
            border: 1px solid var(--ng-border);
            border-radius: var(--ng-radius-sm);
            font-size: 13px;
            font-weight: 500;
            color: var(--ng-subtext);
            transition: var(--ng-transition);
        }
        .ng-social-link:hover {
            border-color: var(--ng-primary);
            color: var(--ng-text);
            box-shadow: var(--ng-shadow-base);
            transform: translateY(-1px);
        }

        /* Footer */
        .ng-footer {
            background: #0F0F14;
            border-top: 1px solid var(--ng-border);
            padding: 48px 0 24px;
            margin-top: 32px;
        }
        .ng-footer-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        @media (min-width: 768px) {
            .ng-footer-grid {
                grid-template-columns: 2fr 1fr 1fr 1fr;
                gap: 28px;
            }
        }
        .ng-footer-brand {
            font-size: 24px;
            font-weight: 800;
            color: var(--ng-text);
            letter-spacing: -0.01em;
            margin-bottom: 12px;
        }
        .ng-footer-desc {
            font-size: 13px;
            color: var(--ng-subtext);
            line-height: 1.7;
            max-width: 320px;
        }
        .ng-footer-title {
            font-size: 14px;
            font-weight: 700;
            color: var(--ng-text);
            margin-bottom: 14px;
        }
        .ng-footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .ng-footer-links a {
            font-size: 13px;
            color: var(--ng-subtext);
            transition: var(--ng-transition);
        }
        .ng-footer-links a:hover {
            color: var(--ng-primary);
        }
        .ng-footer-bottom {
            border-top: 1px solid var(--ng-border);
            padding-top: 20px;
            display: flex;
            flex-direction: column;
            gap: 8px;
            font-size: 12px;
            color: var(--ng-weak);
        }
        @media (min-width: 768px) {
            .ng-footer-bottom {
                flex-direction: row;
                justify-content: space-between;
                align-items: center;
                gap: 16px;
            }
        }
        .ng-footer-bottom-links {
            display: flex;
            gap: 16px;
        }
        .ng-footer-bottom-links a:hover {
            color: var(--ng-primary);
        }

        /* Section spacing */
        .ng-section-block {
            margin-bottom: 48px;
        }

/* roulang page: category4 */
:root {
            --ng-bg: #17171C;
            --ng-card: #1F1F28;
            --ng-border: #2E2E3A;
            --ng-primary: #FF7A1A;
            --ng-primary-hover: #FF8C3A;
            --ng-secondary: #3B2E5D;
            --ng-success: #8CE99A;
            --ng-gold: #E8C547;
            --ng-text: #E8E8EC;
            --ng-subtext: #A0A0B0;
            --ng-weak: #6E6E7E;
            --ng-radius: 12px;
            --ng-radius-btn: 8px;
            --ng-radius-sm: 6px;
            --ng-shadow-base: 0 4px 16px rgba(0, 0, 0, 0.35);
            --ng-shadow-hover: 0 8px 28px rgba(0, 0, 0, 0.5);
            --ng-shadow-glow: 0 0 24px rgba(255, 122, 26, 0.35);
            --ng-transition: all 0.25s ease;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
            scroll-padding-top: 80px;
        }

        body {
            font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            background-color: var(--ng-bg);
            color: var(--ng-text);
            line-height: 1.7;
            font-size: 16px;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: var(--ng-transition);
        }

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

        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            color: inherit;
            outline: none;
            border: none;
            background: none;
        }

        button {
            cursor: pointer;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        @media (min-width: 768px) {
            .container {
                padding: 0 32px;
            }
        }

        @media (min-width: 1024px) {
            .container {
                padding: 0 40px;
            }
        }

        /* Header / Nav */
        .ng-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 50;
            height: 64px;
            background: rgba(23, 23, 28, 0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--ng-border);
            transition: var(--ng-transition);
        }

        .ng-header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }

        .ng-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 800;
            letter-spacing: -0.01em;
            color: var(--ng-text);
            flex-shrink: 0;
        }

        .ng-logo-icon {
            width: 32px;
            height: 32px;
            border-radius: 8px;
            background: linear-gradient(135deg, var(--ng-primary), var(--ng-secondary));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            font-weight: 900;
            color: #fff;
            flex-shrink: 0;
        }

        .ng-nav-desktop {
            display: none;
            align-items: center;
            gap: 4px;
        }

        @media (min-width: 1024px) {
            .ng-nav-desktop {
                display: flex;
            }
        }

        .ng-nav-link {
            display: inline-flex;
            align-items: center;
            padding: 8px 14px;
            font-size: 14px;
            font-weight: 500;
            color: var(--ng-subtext);
            border-radius: 8px;
            position: relative;
            transition: var(--ng-transition);
            white-space: nowrap;
        }

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

        .ng-nav-link.ng-active {
            color: var(--ng-primary);
        }

        .ng-nav-link.ng-active::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 14px;
            right: 14px;
            height: 2px;
            background: var(--ng-primary);
            border-radius: 2px;
        }

        .ng-nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--ng-primary);
            color: #fff;
            font-weight: 600;
            font-size: 14px;
            padding: 10px 20px;
            border-radius: var(--ng-radius-btn);
            transition: var(--ng-transition);
            white-space: nowrap;
            flex-shrink: 0;
        }

        .ng-nav-cta:hover {
            background: var(--ng-primary-hover);
            box-shadow: var(--ng-shadow-glow);
            transform: translateY(-1px);
        }

        .ng-nav-right {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .ng-hamburger {
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            width: 40px;
            height: 40px;
            border-radius: 8px;
            border: 1px solid var(--ng-border);
            background: transparent;
            gap: 5px;
            transition: var(--ng-transition);
        }

        .ng-hamburger span {
            display: block;
            width: 20px;
            height: 2px;
            background: var(--ng-text);
            border-radius: 2px;
            transition: var(--ng-transition);
        }

        .ng-hamburger:hover {
            border-color: var(--ng-primary);
        }

        @media (min-width: 1024px) {
            .ng-hamburger {
                display: none;
            }
        }

        .ng-mobile-menu {
            position: fixed;
            top: 64px;
            left: 0;
            right: 0;
            bottom: 0;
            z-index: 49;
            background: rgba(23, 23, 28, 0.98);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            display: none;
            flex-direction: column;
            padding: 20px;
            overflow-y: auto;
        }

        .ng-mobile-menu.ng-open {
            display: flex;
        }

        .ng-mobile-menu a {
            display: block;
            padding: 14px 16px;
            font-size: 16px;
            font-weight: 500;
            color: var(--ng-subtext);
            border-radius: 8px;
            border-bottom: 1px solid rgba(46, 46, 58, 0.6);
            transition: var(--ng-transition);
        }

        .ng-mobile-menu a:hover {
            color: var(--ng-text);
            background: rgba(255, 255, 255, 0.04);
        }

        .ng-mobile-menu a.ng-active {
            color: var(--ng-primary);
            font-weight: 600;
        }

        .ng-mobile-cta {
            margin-top: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: var(--ng-primary);
            color: #fff;
            font-weight: 600;
            font-size: 15px;
            padding: 14px 20px;
            border-radius: var(--ng-radius-btn);
            transition: var(--ng-transition);
        }

        .ng-mobile-cta:hover {
            background: var(--ng-primary-hover);
        }

        /* Breadcrumb */
        .ng-breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--ng-weak);
            padding: 24px 0 0;
            margin-top: 64px;
        }

        .ng-breadcrumb a {
            color: var(--ng-subtext);
            transition: var(--ng-transition);
        }

        .ng-breadcrumb a:hover {
            color: var(--ng-primary);
        }

        .ng-breadcrumb .ng-breadcrumb-sep {
            opacity: 0.5;
        }

        .ng-breadcrumb .ng-breadcrumb-current {
            color: var(--ng-primary);
            font-weight: 500;
        }

        /* Category Header */
        .ng-cat-header {
            padding: 28px 0 24px;
        }

        .ng-cat-header h1 {
            font-size: 32px;
            font-weight: 800;
            letter-spacing: -0.01em;
            color: var(--ng-text);
            margin-bottom: 12px;
            line-height: 1.3;
        }

        .ng-cat-header p {
            font-size: 16px;
            color: var(--ng-subtext);
            max-width: 780px;
            line-height: 1.8;
        }

        @media (max-width: 768px) {
            .ng-cat-header h1 {
                font-size: 26px;
            }
            .ng-cat-header p {
                font-size: 15px;
            }
        }

        /* Filter Bar */
        .ng-filter-bar {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 10px;
            padding: 16px 0;
            border-bottom: 1px solid var(--ng-border);
            margin-bottom: 28px;
        }

        .ng-filter-label {
            font-size: 14px;
            color: var(--ng-weak);
            white-space: nowrap;
            margin-right: 4px;
        }

        .ng-filter-btn {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            font-size: 13px;
            font-weight: 500;
            color: var(--ng-subtext);
            background: transparent;
            border: 1px solid var(--ng-border);
            border-radius: 999px;
            transition: var(--ng-transition);
            white-space: nowrap;
        }

        .ng-filter-btn:hover {
            border-color: var(--ng-primary);
            color: var(--ng-text);
        }

        .ng-filter-btn.ng-filter-active {
            background: var(--ng-primary);
            border-color: var(--ng-primary);
            color: #fff;
            font-weight: 600;
        }

        /* Stat Snapshot */
        .ng-stats-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
            padding: 20px 0 32px;
        }

        @media (min-width: 768px) {
            .ng-stats-row {
                grid-template-columns: repeat(4, 1fr);
                gap: 20px;
            }
        }

        .ng-stat-item {
            background: var(--ng-card);
            border: 1px solid var(--ng-border);
            border-radius: var(--ng-radius);
            padding: 20px;
            text-align: center;
            transition: var(--ng-transition);
        }

        .ng-stat-item:hover {
            border-color: rgba(255, 122, 26, 0.4);
            box-shadow: var(--ng-shadow-base);
        }

        .ng-stat-number {
            font-size: 30px;
            font-weight: 800;
            color: var(--ng-primary);
            letter-spacing: -0.02em;
            line-height: 1.2;
        }

        .ng-stat-label {
            font-size: 13px;
            color: var(--ng-subtext);
            margin-top: 4px;
        }

        /* Review Cards */
        .ng-review-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
            padding: 8px 0 24px;
        }

        @media (min-width: 640px) {
            .ng-review-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
        }

        @media (min-width: 1024px) {
            .ng-review-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 24px;
            }
        }

        .ng-review-card {
            background: var(--ng-card);
            border: 1px solid var(--ng-border);
            border-radius: var(--ng-radius);
            overflow: hidden;
            transition: var(--ng-transition);
            box-shadow: var(--ng-shadow-base);
            display: flex;
            flex-direction: column;
        }

        .ng-review-card:hover {
            border-color: rgba(255, 122, 26, 0.5);
            box-shadow: var(--ng-shadow-hover);
            transform: translateY(-3px);
        }

        .ng-review-thumb {
            width: 100%;
            aspect-ratio: 16/7;
            object-fit: cover;
            border-bottom: 1px solid var(--ng-border);
            background: var(--ng-secondary);
        }

        .ng-review-body {
            padding: 18px 20px 20px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .ng-review-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 10px;
            gap: 10px;
        }

        .ng-review-player {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .ng-review-avatar {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--ng-secondary), var(--ng-primary));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            flex-shrink: 0;
            letter-spacing: -0.02em;
        }

        .ng-review-name {
            font-size: 15px;
            font-weight: 600;
            color: var(--ng-text);
            line-height: 1.3;
        }

        .ng-review-hours {
            font-size: 12px;
            color: var(--ng-weak);
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .ng-review-rating {
            display: flex;
            align-items: center;
            gap: 5px;
            flex-shrink: 0;
        }

        .ng-star {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 16px;
            height: 16px;
            color: var(--ng-gold);
            font-size: 14px;
            line-height: 1;
        }

        .ng-star.ng-star-empty {
            color: var(--ng-weak);
            opacity: 0.4;
        }

        .ng-review-rating-num {
            font-size: 13px;
            font-weight: 700;
            color: var(--ng-gold);
            margin-left: 2px;
        }

        .ng-review-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--ng-text);
            margin-bottom: 8px;
            line-height: 1.5;
        }

        .ng-review-text {
            font-size: 13px;
            color: var(--ng-subtext);
            line-height: 1.75;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 4;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .ng-review-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-top: 12px;
            padding-top: 12px;
            border-top: 1px solid var(--ng-border);
            font-size: 12px;
            color: var(--ng-weak);
        }

        .ng-review-meta span {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .ng-tag {
            display: inline-flex;
            align-items: center;
            padding: 3px 10px;
            font-size: 11px;
            font-weight: 500;
            border-radius: 999px;
            border: 1px solid var(--ng-border);
            color: var(--ng-subtext);
            white-space: nowrap;
        }

        .ng-tag.ng-tag-green {
            border-color: rgba(140, 233, 154, 0.4);
            color: var(--ng-success);
        }

        /* High Score Board */
        .ng-highscore-section {
            padding: 24px 0 32px;
        }

        .ng-highscore-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
        }

        @media (min-width: 768px) {
            .ng-highscore-grid {
                grid-template-columns: 1fr 1fr;
                align-items: start;
            }
        }

        .ng-highscore-panel {
            background: var(--ng-card);
            border: 1px solid var(--ng-border);
            border-radius: var(--ng-radius);
            padding: 24px;
            box-shadow: var(--ng-shadow-base);
        }

        .ng-highscore-panel h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--ng-text);
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .ng-rank-item {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 12px 0;
            border-bottom: 1px solid var(--ng-border);
            transition: var(--ng-transition);
        }

        .ng-rank-item:last-child {
            border-bottom: none;
        }

        .ng-rank-item:hover {
            padding-left: 6px;
        }

        .ng-rank-number {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            font-weight: 700;
            color: var(--ng-text);
            background: rgba(255, 255, 255, 0.05);
            flex-shrink: 0;
        }

        .ng-rank-number.ng-rank-1 {
            background: var(--ng-gold);
            color: #1a1a1a;
        }

        .ng-rank-number.ng-rank-2 {
            background: #C0C0C0;
            color: #1a1a1a;
        }

        .ng-rank-number.ng-rank-3 {
            background: #CD7F32;
            color: #1a1a1a;
        }

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

        .ng-rank-name {
            font-size: 14px;
            font-weight: 600;
            color: var(--ng-text);
            line-height: 1.4;
        }

        .ng-rank-detail {
            font-size: 12px;
            color: var(--ng-weak);
            display: flex;
            gap: 12px;
        }

        .ng-rank-score {
            font-size: 18px;
            font-weight: 800;
            color: var(--ng-gold);
            flex-shrink: 0;
        }

        .ng-highscore-img {
            border-radius: var(--ng-radius);
            overflow: hidden;
            border: 1px solid var(--ng-border);
            box-shadow: var(--ng-shadow-base);
        }

        .ng-highscore-img img {
            width: 100%;
            aspect-ratio: 16/10;
            object-fit: cover;
        }

        .ng-highscore-desc {
            font-size: 13px;
            color: var(--ng-subtext);
            line-height: 1.75;
            margin-top: 16px;
        }

        /* Rating Criteria */
        .ng-criteria-section {
            padding: 24px 0 32px;
        }

        .ng-criteria-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 16px;
        }

        @media (min-width: 768px) {
            .ng-criteria-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 20px;
            }
        }

        .ng-criteria-item {
            background: var(--ng-card);
            border: 1px solid var(--ng-border);
            border-radius: var(--ng-radius);
            padding: 20px;
            transition: var(--ng-transition);
        }

        .ng-criteria-item:hover {
            border-color: rgba(255, 122, 26, 0.4);
            box-shadow: var(--ng-shadow-base);
        }

        .ng-criteria-icon {
            width: 40px;
            height: 40px;
            border-radius: 8px;
            background: rgba(255, 122, 26, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 12px;
            font-size: 20px;
            color: var(--ng-primary);
        }

        .ng-criteria-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--ng-text);
            margin-bottom: 6px;
        }

        .ng-criteria-desc {
            font-size: 13px;
            color: var(--ng-subtext);
            line-height: 1.7;
        }

        /* Submit Entry */
        .ng-submit-section {
            padding: 24px 0 32px;
        }

        .ng-submit-box {
            background: var(--ng-card);
            border: 1px solid var(--ng-border);
            border-radius: var(--ng-radius);
            padding: 28px 24px;
            box-shadow: var(--ng-shadow-base);
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
        }

        @media (min-width: 768px) {
            .ng-submit-box {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
                align-items: center;
                padding: 32px;
            }
        }

        .ng-submit-content h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--ng-text);
            margin-bottom: 10px;
        }

        .ng-submit-content p {
            font-size: 14px;
            color: var(--ng-subtext);
            line-height: 1.8;
            margin-bottom: 18px;
        }

        .ng-submit-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--ng-primary);
            color: #fff;
            font-weight: 600;
            font-size: 15px;
            padding: 12px 28px;
            border-radius: var(--ng-radius-btn);
            transition: var(--ng-transition);
        }

        .ng-submit-btn:hover {
            background: var(--ng-primary-hover);
            box-shadow: var(--ng-shadow-glow);
            transform: translateY(-1px);
        }

        .ng-submit-img {
            border-radius: var(--ng-radius);
            overflow: hidden;
            border: 1px solid var(--ng-border);
        }

        .ng-submit-img img {
            width: 100%;
            aspect-ratio: 16/10;
            object-fit: cover;
        }

        /* Tag Distribution */
        .ng-tags-section {
            padding: 24px 0 32px;
        }

        .ng-tags-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .ng-tag-cloud-item {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            font-size: 13px;
            font-weight: 500;
            color: var(--ng-subtext);
            background: var(--ng-card);
            border: 1px solid var(--ng-border);
            border-radius: 999px;
            transition: var(--ng-transition);
        }

        .ng-tag-cloud-item:hover {
            border-color: var(--ng-primary);
            color: var(--ng-text);
        }

        .ng-tag-cloud-item .ng-tag-count {
            font-size: 11px;
            color: var(--ng-weak);
            background: rgba(255, 255, 255, 0.06);
            padding: 2px 7px;
            border-radius: 999px;
        }

        /* FAQ */
        .ng-faq-section {
            padding: 24px 0 32px;
        }

        .ng-faq-item {
            background: var(--ng-card);
            border: 1px solid var(--ng-border);
            border-radius: var(--ng-radius);
            margin-bottom: 12px;
            overflow: hidden;
            transition: var(--ng-transition);
        }

        .ng-faq-item:hover {
            border-color: rgba(255, 122, 26, 0.3);
        }

        .ng-faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            width: 100%;
            padding: 16px 20px;
            font-size: 15px;
            font-weight: 600;
            color: var(--ng-text);
            text-align: left;
            background: transparent;
            transition: var(--ng-transition);
        }

        .ng-faq-question:hover {
            background: rgba(255, 255, 255, 0.03);
        }

        .ng-faq-arrow {
            width: 20px;
            height: 20px;
            flex-shrink: 0;
            transition: var(--ng-transition);
            color: var(--ng-weak);
        }

        .ng-faq-item.ng-faq-open .ng-faq-arrow {
            transform: rotate(180deg);
        }

        .ng-faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.3s ease;
            padding: 0 20px;
        }

        .ng-faq-item.ng-faq-open .ng-faq-answer {
            max-height: 300px;
            padding: 0 20px 18px;
        }

        .ng-faq-answer p {
            font-size: 14px;
            color: var(--ng-subtext);
            line-height: 1.8;
        }

        /* Load More */
        .ng-loadmore-section {
            padding: 16px 0 40px;
            text-align: center;
        }

        .ng-loadmore-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 32px;
            font-size: 15px;
            font-weight: 600;
            color: var(--ng-text);
            background: transparent;
            border: 1px solid var(--ng-border);
            border-radius: var(--ng-radius-btn);
            transition: var(--ng-transition);
        }

        .ng-loadmore-btn:hover {
            border-color: var(--ng-primary);
            color: var(--ng-primary);
            box-shadow: var(--ng-shadow-base);
        }

        /* Section Title */
        .ng-section-title {
            font-size: 22px;
            font-weight: 700;
            letter-spacing: -0.01em;
            color: var(--ng-text);
            margin-bottom: 16px;
            line-height: 1.4;
        }

        .ng-section-sub {
            font-size: 14px;
            color: var(--ng-subtext);
            margin-bottom: 20px;
            line-height: 1.7;
        }

        @media (max-width: 768px) {
            .ng-section-title {
                font-size: 19px;
            }
        }

        /* Divider */
        .ng-divider {
            border: none;
            border-top: 1px solid var(--ng-border);
            margin: 8px 0;
        }

        /* Footer */
        .ng-footer {
            background: #0F0F14;
            padding: 48px 0 24px;
            margin-top: 20px;
            border-top: 1px solid var(--ng-border);
        }

        .ng-footer-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }

        @media (min-width: 640px) {
            .ng-footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
        }

        @media (min-width: 1024px) {
            .ng-footer-grid {
                grid-template-columns: 2fr 1fr 1fr 1.2fr;
                gap: 40px;
            }
        }

        .ng-footer-brand {
            font-size: 22px;
            font-weight: 800;
            color: var(--ng-text);
            margin-bottom: 10px;
            letter-spacing: -0.01em;
        }

        .ng-footer-desc {
            font-size: 13px;
            color: var(--ng-weak);
            line-height: 1.8;
            max-width: 320px;
        }

        .ng-footer-title {
            font-size: 14px;
            font-weight: 600;
            color: var(--ng-text);
            margin-bottom: 14px;
        }

        .ng-footer-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .ng-footer-links a {
            font-size: 13px;
            color: var(--ng-subtext);
            transition: var(--ng-transition);
        }

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

        .ng-footer-bottom {
            border-top: 1px solid var(--ng-border);
            padding-top: 20px;
            display: flex;
            flex-direction: column;
            gap: 8px;
            font-size: 12px;
            color: var(--ng-weak);
        }

        @media (min-width: 768px) {
            .ng-footer-bottom {
                flex-direction: row;
                justify-content: space-between;
                align-items: center;
                gap: 16px;
            }
        }

        .ng-footer-bottom-links {
            display: flex;
            gap: 16px;
        }

        .ng-footer-bottom-links a {
            color: var(--ng-weak);
            transition: var(--ng-transition);
        }

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

        /* Focus states */
        a:focus-visible,
        button:focus-visible {
            outline: 2px solid var(--ng-primary);
            outline-offset: 2px;
        }

        /* Section spacing */
        .ng-section {
            padding: 20px 0;
        }

        @media (min-width: 768px) {
            .ng-section {
                padding: 28px 0;
            }
        }