/* roulang page: index */
:root {
            --color-primary: #1a1a28;
            --color-accent: #c9a96e;
            --color-accent-light: #dcc89a;
            --color-accent-dark: #a88b4e;
            --color-bg: #fafaf7;
            --color-bg-alt: #f2f0eb;
            --color-bg-dark: #1a1a28;
            --color-text: #2c2c2c;
            --color-text-light: #6b6b6b;
            --color-text-lighter: #999;
            --color-border: #e8e5df;
            --color-border-light: #f0ede7;
            --color-white: #ffffff;
            --color-success: #3a7d5a;
            --color-warning: #c98d3e;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);
            --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.16);
            --transition-fast: 0.18s ease;
            --transition-base: 0.3s ease;
            --transition-slow: 0.5s ease;
            --font-sans: 'Inter', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            --font-display: 'Playfair Display', 'Noto Serif SC', 'STSong', 'Songti SC', 'SimSun', serif;
            --max-width: 1280px;
            --header-height: 68px;
            --spacing-xs: 8px;
            --spacing-sm: 16px;
            --spacing-md: 24px;
            --spacing-lg: 40px;
            --spacing-xl: 56px;
            --spacing-2xl: 80px;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            font-size: 16px;
        }

        body {
            font-family: var(--font-sans);
            color: var(--color-text);
            background-color: var(--color-bg);
            line-height: 1.7;
            min-height: 100vh;
            overflow-x: hidden;
        }

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

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

        button {
            cursor: pointer;
            border: none;
            font-family: inherit;
            font-size: inherit;
            background: none;
            outline: none;
        }

        button:focus-visible,
        a:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 3px;
            border-radius: var(--radius-sm);
        }

        ul,
        ol {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 600;
            line-height: 1.3;
            color: var(--color-primary);
        }

        /* Container */
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 var(--spacing-md);
        }

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

        /* Header / Nav */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--color-border-light);
            height: var(--header-height);
            display: flex;
            align-items: center;
            transition: box-shadow var(--transition-base);
        }

        .site-header.scrolled {
            box-shadow: var(--shadow-md);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 var(--spacing-md);
        }

        @media (min-width: 1024px) {
            .header-inner {
                padding: 0 var(--spacing-lg);
            }
        }

        .logo {
            font-family: var(--font-display);
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: 0.5px;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
            transition: color var(--transition-fast);
        }
        .logo:hover {
            color: var(--color-accent-dark);
        }
        .logo-icon {
            width: 34px;
            height: 34px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--color-primary) 0%, #2a2a42 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-accent);
            font-size: 0.85rem;
            font-weight: 700;
            flex-shrink: 0;
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .nav-menu a {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--color-text);
            transition: all var(--transition-fast);
            white-space: nowrap;
            position: relative;
        }
        .nav-menu a:hover {
            color: var(--color-accent-dark);
            background: rgba(201, 169, 110, 0.06);
        }
        .nav-menu a.active {
            color: var(--color-accent-dark);
            font-weight: 600;
            background: rgba(201, 169, 110, 0.1);
        }
        .nav-menu a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--color-accent);
            border-radius: 1px;
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            padding: 10px 20px;
            border-radius: var(--radius-md);
            font-size: 0.9rem;
            font-weight: 600;
            background: var(--color-accent);
            color: #fff;
            transition: all var(--transition-fast);
            white-space: nowrap;
            letter-spacing: 0.3px;
        }
        .nav-cta:hover {
            background: var(--color-accent-dark);
            box-shadow: var(--shadow-md);
            transform: translateY(-1px);
            color: #fff;
        }
        .nav-cta:active {
            transform: translateY(0);
            box-shadow: var(--shadow-sm);
        }

        /* Hamburger */
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            cursor: pointer;
            z-index: 1001;
            background: none;
            border: none;
        }
        .hamburger span {
            display: block;
            width: 26px;
            height: 2px;
            background: var(--color-primary);
            border-radius: 2px;
            transition: all var(--transition-base);
            transform-origin: center;
        }
        .hamburger.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
            transform: scaleX(0);
        }
        .hamburger.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        @media (max-width: 1023px) {
            .hamburger {
                display: flex;
            }
            .nav-menu {
                position: fixed;
                top: 0;
                right: -320px;
                width: 300px;
                height: 100vh;
                flex-direction: column;
                background: #fff;
                padding: 90px 28px 40px;
                gap: 8px;
                box-shadow: var(--shadow-xl);
                transition: right var(--transition-base);
                align-items: stretch;
                overflow-y: auto;
                z-index: 999;
            }
            .nav-menu.open {
                right: 0;
            }
            .nav-menu a {
                padding: 12px 16px;
                font-size: 1rem;
                border-radius: var(--radius-md);
            }
            .nav-menu .nav-cta {
                margin-top: 12px;
                text-align: center;
                justify-content: center;
            }
            .mobile-overlay {
                position: fixed;
                inset: 0;
                background: rgba(0, 0, 0, 0.4);
                z-index: 998;
                opacity: 0;
                pointer-events: none;
                transition: opacity var(--transition-base);
            }
            .mobile-overlay.show {
                opacity: 1;
                pointer-events: auto;
            }
        }

        @media (min-width: 1024px) {
            .nav-menu {
                gap: 2px;
            }
            .nav-menu a {
                padding: 8px 14px;
                font-size: 0.88rem;
            }
            .nav-cta {
                margin-left: 10px;
            }
        }

        /* Hero */
        .hero {
            position: relative;
            min-height: 620px;
            display: flex;
            align-items: center;
            background: var(--color-bg-dark);
            background-image: url('assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(160deg, rgba(26, 26, 40, 0.78) 0%, rgba(26, 26, 40, 0.55) 45%, rgba(26, 26, 40, 0.7) 100%);
            z-index: 1;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 700px;
            padding: var(--spacing-2xl) 0;
        }
        .hero-badge {
            display: inline-block;
            padding: 6px 16px;
            border-radius: 50px;
            background: rgba(201, 169, 110, 0.2);
            border: 1px solid rgba(201, 169, 110, 0.4);
            color: var(--color-accent-light);
            font-size: 0.82rem;
            font-weight: 500;
            letter-spacing: 0.5px;
            margin-bottom: var(--spacing-md);
        }
        .hero h1 {
            font-family: var(--font-display);
            font-size: 3rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: var(--spacing-sm);
            letter-spacing: 1px;
            line-height: 1.2;
        }
        .hero h1 span {
            color: var(--color-accent);
        }
        .hero p {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: var(--spacing-lg);
            max-width: 540px;
            line-height: 1.7;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: var(--spacing-sm);
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 28px;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 0.95rem;
            letter-spacing: 0.4px;
            background: var(--color-accent);
            color: #fff;
            transition: all var(--transition-fast);
            box-shadow: 0 4px 20px rgba(201, 169, 110, 0.3);
        }
        .btn-primary:hover {
            background: var(--color-accent-dark);
            box-shadow: 0 6px 28px rgba(168, 139, 78, 0.4);
            transform: translateY(-2px);
            color: #fff;
        }
        .btn-primary:active {
            transform: translateY(0);
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 28px;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 0.95rem;
            letter-spacing: 0.4px;
            background: transparent;
            color: #fff;
            border: 1.5px solid rgba(255, 255, 255, 0.5);
            transition: all var(--transition-fast);
        }
        .btn-outline:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.08);
            color: #fff;
        }
        .btn-outline:active {
            background: rgba(255, 255, 255, 0.14);
        }

        @media (max-width: 768px) {
            .hero {
                min-height: 500px;
            }
            .hero h1 {
                font-size: 2rem;
            }
            .hero p {
                font-size: 1rem;
            }
            .hero-actions {
                flex-direction: column;
                align-items: flex-start;
            }
            .btn-primary,
            .btn-outline {
                width: 100%;
                justify-content: center;
            }
        }

        /* Section */
        .section {
            padding: var(--spacing-2xl) 0;
        }
        .section-alt {
            background: var(--color-bg-alt);
        }
        .section-dark {
            background: var(--color-bg-dark);
            color: #fff;
        }
        .section-dark h2,
        .section-dark h3 {
            color: #fff;
        }
        .section-header {
            text-align: center;
            margin-bottom: var(--spacing-xl);
        }
        .section-header h2 {
            font-family: var(--font-display);
            font-size: 2.2rem;
            font-weight: 700;
            margin-bottom: var(--spacing-xs);
            letter-spacing: 0.5px;
        }
        .section-header p {
            color: var(--color-text-light);
            font-size: 1.05rem;
            max-width: 600px;
            margin: 0 auto;
        }
        .section-dark .section-header p {
            color: rgba(255, 255, 255, 0.65);
        }
        .section-tag {
            display: inline-block;
            padding: 5px 14px;
            border-radius: 50px;
            background: rgba(201, 169, 110, 0.12);
            color: var(--color-accent-dark);
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.6px;
            text-transform: uppercase;
            margin-bottom: var(--spacing-sm);
        }

        @media (max-width: 768px) {
            .section {
                padding: var(--spacing-xl) 0;
            }
            .section-header h2 {
                font-size: 1.6rem;
            }
        }

        /* Data Dashboard */
        .data-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-md);
        }
        .data-card {
            background: var(--color-white);
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg) var(--spacing-md);
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-base);
        }
        .data-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
            border-color: var(--color-accent-light);
        }
        .data-card .data-icon {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-md);
            background: rgba(201, 169, 110, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto var(--spacing-sm);
            font-size: 1.4rem;
            color: var(--color-accent-dark);
        }
        .data-card .data-value {
            font-family: var(--font-display);
            font-size: 2.4rem;
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: 0.5px;
        }
        .data-card .data-label {
            font-size: 0.88rem;
            color: var(--color-text-light);
            margin-top: 4px;
        }
        .data-card .data-trend {
            display: inline-block;
            font-size: 0.78rem;
            font-weight: 600;
            color: var(--color-success);
            margin-top: 6px;
        }

        @media (max-width: 1023px) {
            .data-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .data-grid {
                grid-template-columns: 1fr;
            }
            .data-card .data-value {
                font-size: 1.8rem;
            }
        }

        /* Card Grid */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-md);
        }
        .card-grid.cols-4 {
            grid-template-columns: repeat(4, 1fr);
        }
        .card-grid.cols-2 {
            grid-template-columns: repeat(2, 1fr);
        }

        @media (max-width: 1023px) {
            .card-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .card-grid.cols-4 {
                grid-template-columns: repeat(2, 1fr);
            }
            .card-grid.cols-2 {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 520px) {
            .card-grid,
            .card-grid.cols-4 {
                grid-template-columns: 1fr;
            }
        }

        /* Service Card */
        .service-card {
            background: var(--color-white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
            height: 100%;
        }
        .service-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: var(--color-accent-light);
        }
        .service-card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            background: var(--color-bg-alt);
        }
        .service-card-body {
            padding: var(--spacing-md);
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .service-card-body h3 {
            font-size: 1.1rem;
            font-weight: 600;
            margin-bottom: 6px;
        }
        .service-card-body p {
            font-size: 0.9rem;
            color: var(--color-text-light);
            flex: 1;
            margin-bottom: var(--spacing-sm);
        }
        .service-card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 600;
            font-size: 0.88rem;
            color: var(--color-accent-dark);
            transition: gap var(--transition-fast);
        }
        .service-card-link:hover {
            gap: 10px;
            color: var(--color-accent-dark);
        }

        @media (max-width: 520px) {
            .service-card-img {
                height: 160px;
            }
        }

        /* Info List */
        .info-list {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-sm);
        }
        .info-item {
            display: flex;
            align-items: flex-start;
            gap: var(--spacing-sm);
            padding: var(--spacing-sm) var(--spacing-md);
            background: var(--color-white);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-fast);
            cursor: pointer;
        }
        .info-item:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--color-accent-light);
            transform: translateX(3px);
        }
        .info-item .info-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--color-accent);
            flex-shrink: 0;
            margin-top: 6px;
        }
        .info-item-content h4 {
            font-size: 0.98rem;
            font-weight: 600;
            margin-bottom: 2px;
        }
        .info-item-content p {
            font-size: 0.85rem;
            color: var(--color-text-light);
        }
        .info-item-meta {
            font-size: 0.78rem;
            color: var(--color-text-lighter);
            margin-left: auto;
            white-space: nowrap;
            flex-shrink: 0;
            align-self: center;
        }

        @media (max-width: 520px) {
            .info-item {
                flex-wrap: wrap;
            }
            .info-item-meta {
                margin-left: 0;
                width: 100%;
                margin-top: 4px;
            }
        }

        /* Ranking */
        .ranking-list {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-xs);
        }
        .ranking-item {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
            padding: var(--spacing-sm) var(--spacing-md);
            background: var(--color-white);
            border-radius: var(--radius-md);
            border: 1px solid transparent;
            transition: all var(--transition-fast);
        }
        .ranking-item:hover {
            border-color: var(--color-accent-light);
            box-shadow: var(--shadow-sm);
        }
        .ranking-num {
            width: 34px;
            height: 34px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.9rem;
            flex-shrink: 0;
            background: var(--color-bg-alt);
            color: var(--color-text-light);
        }
        .ranking-item:nth-child(1) .ranking-num {
            background: var(--color-accent);
            color: #fff;
        }
        .ranking-item:nth-child(2) .ranking-num {
            background: #d4c5a0;
            color: #fff;
        }
        .ranking-item:nth-child(3) .ranking-num {
            background: #c9b896;
            color: #fff;
        }
        .ranking-info {
            flex: 1;
            min-width: 0;
        }
        .ranking-info h4 {
            font-size: 0.95rem;
            font-weight: 600;
        }
        .ranking-info p {
            font-size: 0.8rem;
            color: var(--color-text-light);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .ranking-badge {
            padding: 5px 12px;
            border-radius: 50px;
            font-size: 0.78rem;
            font-weight: 600;
            background: rgba(58, 125, 90, 0.1);
            color: var(--color-success);
            white-space: nowrap;
        }

        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-xs);
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--color-white);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border-light);
            overflow: hidden;
            transition: all var(--transition-fast);
        }
        .faq-item:hover {
            border-color: var(--color-accent-light);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: var(--spacing-md);
            font-weight: 600;
            font-size: 0.98rem;
            text-align: left;
            color: var(--color-text);
            cursor: pointer;
            transition: color var(--transition-fast);
            gap: var(--spacing-sm);
        }
        .faq-question:hover {
            color: var(--color-accent-dark);
        }
        .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--color-bg-alt);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            transition: all var(--transition-base);
            font-size: 0.8rem;
            color: var(--color-text-light);
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            background: var(--color-accent);
            color: #fff;
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-slow);
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
        }
        .faq-answer-inner {
            padding: 0 var(--spacing-md) var(--spacing-md);
            font-size: 0.9rem;
            color: var(--color-text-light);
            line-height: 1.7;
        }

        /* CTA */
        .cta-section {
            position: relative;
            background: var(--color-bg-dark);
            background-image: url('assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            border-radius: var(--radius-xl);
            overflow: hidden;
            padding: var(--spacing-2xl) var(--spacing-lg);
            text-align: center;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(26, 26, 40, 0.72);
            z-index: 1;
        }
        .cta-content {
            position: relative;
            z-index: 2;
        }
        .cta-content h2 {
            font-family: var(--font-display);
            font-size: 2rem;
            color: #fff;
            margin-bottom: var(--spacing-sm);
        }
        .cta-content p {
            color: rgba(255, 255, 255, 0.75);
            font-size: 1.05rem;
            margin-bottom: var(--spacing-lg);
        }
        .cta-content .btn-primary {
            font-size: 1rem;
            padding: 16px 36px;
            border-radius: var(--radius-lg);
        }

        @media (max-width: 768px) {
            .cta-section {
                border-radius: var(--radius-lg);
                padding: var(--spacing-xl) var(--spacing-md);
            }
            .cta-content h2 {
                font-size: 1.5rem;
            }
        }

        /* Brand Matrix */
        .matrix-grid {
            display: grid;
            grid-template-columns: repeat(6, 1fr);
            gap: var(--spacing-sm);
        }
        .matrix-item {
            background: var(--color-white);
            border-radius: var(--radius-md);
            padding: var(--spacing-md);
            text-align: center;
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-base);
            cursor: pointer;
        }
        .matrix-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: var(--color-accent-light);
        }
        .matrix-icon {
            width: 44px;
            height: 44px;
            border-radius: var(--radius-sm);
            background: rgba(201, 169, 110, 0.08);
            margin: 0 auto var(--spacing-xs);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
        }
        .matrix-item h4 {
            font-size: 0.9rem;
            font-weight: 600;
            margin-bottom: 2px;
        }
        .matrix-item p {
            font-size: 0.75rem;
            color: var(--color-text-light);
        }

        @media (max-width: 1023px) {
            .matrix-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }
        @media (max-width: 520px) {
            .matrix-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        /* Mobile App Block */
        .app-block {
            display: flex;
            align-items: center;
            gap: var(--spacing-xl);
            background: var(--color-white);
            border-radius: var(--radius-xl);
            padding: var(--spacing-xl);
            border: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-sm);
        }
        .app-block-img {
            flex-shrink: 0;
            width: 220px;
            height: 280px;
            border-radius: var(--radius-lg);
            object-fit: cover;
            background: var(--color-bg-alt);
        }
        .app-block-info h3 {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: var(--spacing-sm);
        }
        .app-block-info p {
            color: var(--color-text-light);
            margin-bottom: var(--spacing-md);
            max-width: 480px;
        }
        .app-badges {
            display: flex;
            gap: var(--spacing-sm);
            flex-wrap: wrap;
        }
        .app-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 18px;
            border-radius: var(--radius-md);
            background: var(--color-primary);
            color: #fff;
            font-weight: 600;
            font-size: 0.85rem;
            cursor: pointer;
            transition: all var(--transition-fast);
        }
        .app-badge:hover {
            background: #2a2a42;
            box-shadow: var(--shadow-md);
        }

        @media (max-width: 768px) {
            .app-block {
                flex-direction: column;
                text-align: center;
            }
            .app-block-img {
                width: 160px;
                height: 200px;
            }
            .app-badges {
                justify-content: center;
            }
        }

        /* Footer */
        .site-footer {
            background: var(--color-bg-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: var(--spacing-2xl) 0 var(--spacing-lg);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: var(--spacing-xl);
        }
        .footer-col h4 {
            color: #fff;
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: var(--spacing-sm);
            letter-spacing: 0.3px;
        }
        .footer-col a {
            display: block;
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.88rem;
            padding: 4px 0;
            transition: color var(--transition-fast);
        }
        .footer-col a:hover {
            color: var(--color-accent-light);
        }
        .footer-brand {
            font-family: var(--font-display);
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: var(--spacing-sm);
        }
        .footer-disclaimer {
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.4);
            margin-top: var(--spacing-sm);
            line-height: 1.6;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            margin-top: var(--spacing-xl);
            padding-top: var(--spacing-md);
            text-align: center;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.4);
        }

        @media (max-width: 1023px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: var(--spacing-lg);
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }

        /* Utility */
        .text-accent {
            color: var(--color-accent);
        }
        .mt-sm {
            margin-top: var(--spacing-sm);
        }
        .mt-md {
            margin-top: var(--spacing-md);
        }
        .mt-lg {
            margin-top: var(--spacing-lg);
        }
        .text-center {
            text-align: center;
        }
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            border: 0;
        }

        /* Animations */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(24px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .animate-in {
            animation: fadeInUp 0.6s ease forwards;
        }

/* roulang page: category3 */
:root {
            --color-brand: #c9a96e;
            --color-brand-dark: #a8863d;
            --color-brand-light: #f0d78c;
            --color-surface-dark: #1c1c1e;
            --color-surface-deeper: #161618;
            --color-surface-card: #242426;
            --color-surface-border: #333336;
            --color-text-primary: #1c1c1e;
            --color-text-secondary: #48484a;
            --color-text-muted: #8e8e93;
            --color-text-on-dark: #f5f5f7;
            --color-text-on-dark-muted: rgba(245, 245, 247, 0.6);
            --color-bg-page: #fafaf9;
            --color-bg-section: #ffffff;
            --color-bg-alt: #f6f5f3;
            --radius-sm: 0.5rem;
            --radius-md: 0.75rem;
            --radius-lg: 1rem;
            --radius-xl: 1.25rem;
            --radius-2xl: 1.5rem;
            --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 1px 3px rgba(0, 0, 0, 0.06), 0 6px 20px rgba(0, 0, 0, 0.04);
            --shadow-lg: 0 4px 20px rgba(0, 0, 0, 0.08), 0 12px 40px rgba(0, 0, 0, 0.05);
            --shadow-xl: 0 8px 32px rgba(0, 0, 0, 0.1), 0 20px 60px rgba(0, 0, 0, 0.06);
            --transition-fast: 180ms ease;
            --transition-base: 260ms ease;
            --transition-slow: 380ms cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            text-rendering: optimizeLegibility;
        }

        body {
            font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
            line-height: 1.7;
            color: var(--color-text-primary);
            background-color: var(--color-bg-page);
            min-height: 100vh;
            letter-spacing: 0.01em;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-fast);
        }
        button {
            cursor: pointer;
            border: none;
            font-family: inherit;
        }
        input,
        select,
        textarea {
            font-family: inherit;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
        }
        @media (min-width: 1280px) {
            .container {
                max-width: 1240px;
                padding-left: 2rem;
                padding-right: 2rem;
            }
        }

        /* ===== HEADER & NAV ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(0, 0, 0, 0.06);
            transition: box-shadow var(--transition-base);
        }
        .site-header.scrolled {
            box-shadow: var(--shadow-md);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
            gap: 1.5rem;
        }
        .header-logo {
            font-family: 'Noto Serif SC', 'Source Han Serif SC', Georgia, serif;
            font-size: 1.35rem;
            font-weight: 700;
            color: #1c1c1e;
            letter-spacing: 0.03em;
            white-space: nowrap;
            flex-shrink: 0;
            transition: color var(--transition-fast);
        }
        .header-logo:hover {
            color: var(--color-brand);
        }
        .header-logo .logo-accent {
            color: var(--color-brand);
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 0.25rem;
            flex-wrap: nowrap;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }
        .nav-menu::-webkit-scrollbar {
            display: none;
        }
        .nav-menu a {
            display: inline-flex;
            align-items: center;
            padding: 0.5rem 0.9rem;
            font-size: 0.9rem;
            font-weight: 500;
            color: #48484a;
            border-radius: var(--radius-md);
            white-space: nowrap;
            transition: all var(--transition-fast);
            position: relative;
            letter-spacing: 0.02em;
        }
        .nav-menu a:hover {
            color: #1c1c1e;
            background: rgba(0, 0, 0, 0.03);
        }
        .nav-menu a.active {
            color: var(--color-brand);
            font-weight: 600;
            background: rgba(201, 169, 110, 0.08);
        }
        .nav-menu a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--color-brand);
            border-radius: 3px;
        }
        .nav-cta {
            background: var(--color-brand) !important;
            color: #fff !important;
            font-weight: 600 !important;
            padding: 0.55rem 1.3rem !important;
            border-radius: 2rem !important;
            transition: all var(--transition-base) !important;
            box-shadow: 0 2px 8px rgba(201, 169, 110, 0.3);
        }
        .nav-cta:hover {
            background: #b8953a !important;
            box-shadow: 0 4px 16px rgba(201, 169, 110, 0.45) !important;
            transform: translateY(-1px);
            color: #fff !important;
        }
        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: #1c1c1e;
            cursor: pointer;
            padding: 0.4rem;
            border-radius: var(--radius-sm);
            transition: background var(--transition-fast);
            flex-shrink: 0;
        }
        .mobile-toggle:hover {
            background: rgba(0, 0, 0, 0.04);
        }

        @media (max-width: 1024px) {
            .nav-menu {
                gap: 0;
                font-size: 0.82rem;
            }
            .nav-menu a {
                padding: 0.4rem 0.6rem;
                font-size: 0.82rem;
            }
            .nav-cta {
                padding: 0.45rem 1rem !important;
                font-size: 0.82rem !important;
            }
        }
        @media (max-width: 768px) {
            .mobile-toggle {
                display: block;
            }
            .nav-menu {
                position: fixed;
                top: 64px;
                left: 0;
                right: 0;
                flex-direction: column;
                background: rgba(255, 255, 255, 0.97);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                padding: 1rem 1.5rem;
                gap: 0.3rem;
                border-bottom: 1px solid rgba(0, 0, 0, 0.06);
                box-shadow: var(--shadow-lg);
                transform: translateY(-120%);
                opacity: 0;
                pointer-events: none;
                transition: all var(--transition-slow);
                z-index: 99;
            }
            .nav-menu.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav-menu a {
                width: 100%;
                padding: 0.7rem 1rem;
                font-size: 0.95rem;
                border-radius: var(--radius-md);
            }
            .nav-menu a.active::after {
                display: none;
            }
            .nav-menu a.active {
                border-left: 3px solid var(--color-brand);
            }
            .nav-cta {
                text-align: center;
                justify-content: center;
                margin-top: 0.5rem;
            }
        }

        /* ===== PAGE BANNER ===== */
        .page-banner {
            position: relative;
            background: linear-gradient(160deg, #1c1c1e 0%, #2a2a2d 30%, #1c1c1e 60%, #161618 100%);
            padding: 4rem 0;
            overflow: hidden;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-image: url('assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.18;
            z-index: 0;
        }
        .page-banner::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 60%;
            background: linear-gradient(to top, rgba(28, 28, 30, 0.95), transparent);
            z-index: 1;
        }
        .page-banner .banner-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 720px;
            margin: 0 auto;
        }
        .page-banner .banner-badge {
            display: inline-block;
            background: rgba(201, 169, 110, 0.2);
            color: var(--color-brand-light);
            font-size: 0.8rem;
            font-weight: 600;
            padding: 0.35rem 1rem;
            border-radius: 2rem;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            margin-bottom: 1.2rem;
            border: 1px solid rgba(201, 169, 110, 0.3);
        }
        .page-banner h1 {
            font-family: 'Noto Serif SC', 'Source Han Serif SC', Georgia, serif;
            font-size: 2.6rem;
            font-weight: 700;
            color: #f5f5f7;
            letter-spacing: 0.03em;
            line-height: 1.3;
            margin-bottom: 1rem;
        }
        .page-banner .banner-subtitle {
            font-size: 1.05rem;
            color: var(--color-text-on-dark-muted);
            line-height: 1.7;
            max-width: 560px;
            margin: 0 auto;
            letter-spacing: 0.02em;
        }
        @media (max-width: 768px) {
            .page-banner {
                padding: 2.8rem 0;
            }
            .page-banner h1 {
                font-size: 1.8rem;
            }
            .page-banner .banner-subtitle {
                font-size: 0.9rem;
            }
        }

        /* ===== SECTION STYLES ===== */
        .section {
            padding: 4rem 0;
        }
        .section-alt {
            background: var(--color-bg-alt);
        }
        .section-header {
            text-align: center;
            margin-bottom: 2.5rem;
        }
        .section-header h2 {
            font-family: 'Noto Serif SC', 'Source Han Serif SC', Georgia, serif;
            font-size: 1.9rem;
            font-weight: 700;
            color: #1c1c1e;
            letter-spacing: 0.03em;
            margin-bottom: 0.6rem;
        }
        .section-header .section-line {
            width: 48px;
            height: 3px;
            background: var(--color-brand);
            margin: 0.8rem auto;
            border-radius: 3px;
        }
        .section-header p {
            color: #6d6d70;
            font-size: 0.95rem;
            max-width: 520px;
            margin: 0 auto;
            letter-spacing: 0.02em;
        }

        /* ===== REVIEW CARDS ===== */
        .review-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
            gap: 1.5rem;
        }
        .review-card {
            background: #fff;
            border-radius: var(--radius-xl);
            overflow: hidden;
            border: 1px solid rgba(0, 0, 0, 0.06);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
        }
        .review-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
            border-color: rgba(201, 169, 110, 0.25);
        }
        .review-card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            display: block;
        }
        .review-card-body {
            padding: 1.4rem 1.5rem 1.5rem;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .review-card-rating {
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
            background: rgba(201, 169, 110, 0.1);
            color: #a8863d;
            font-weight: 700;
            font-size: 0.85rem;
            padding: 0.3rem 0.7rem;
            border-radius: 2rem;
            margin-bottom: 0.7rem;
            width: fit-content;
        }
        .review-card-rating i {
            font-size: 0.75rem;
            color: #d4a853;
        }
        .review-card h3 {
            font-family: 'Noto Serif SC', 'Source Han Serif SC', Georgia, serif;
            font-size: 1.2rem;
            font-weight: 700;
            color: #1c1c1e;
            margin-bottom: 0.5rem;
            letter-spacing: 0.02em;
        }
        .review-card p {
            font-size: 0.88rem;
            color: #6d6d70;
            line-height: 1.6;
            flex: 1;
            margin-bottom: 1rem;
        }
        .review-card-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 0.4rem;
            margin-bottom: 1rem;
        }
        .review-card-tags span {
            font-size: 0.75rem;
            background: #f5f5f7;
            color: #48484a;
            padding: 0.25rem 0.65rem;
            border-radius: 2rem;
            letter-spacing: 0.02em;
        }
        .review-card .btn-outline-sm {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--color-brand);
            border: 1.5px solid var(--color-brand);
            padding: 0.45rem 1.1rem;
            border-radius: 2rem;
            transition: all var(--transition-fast);
            width: fit-content;
        }
        .review-card .btn-outline-sm:hover {
            background: var(--color-brand);
            color: #fff;
        }
        @media (max-width: 768px) {
            .review-grid {
                grid-template-columns: 1fr;
                gap: 1.2rem;
            }
            .review-card-img {
                height: 180px;
            }
        }

        /* ===== COMPARISON TABLE ===== */
        .comparison-wrapper {
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            border-radius: var(--radius-xl);
            border: 1px solid rgba(0, 0, 0, 0.06);
            box-shadow: var(--shadow-sm);
        }
        .comparison-table {
            width: 100%;
            min-width: 700px;
            border-collapse: collapse;
            background: #fff;
            font-size: 0.9rem;
        }
        .comparison-table thead th {
            background: #1c1c1e;
            color: #f5f5f7;
            font-weight: 600;
            padding: 1rem 1.2rem;
            text-align: left;
            letter-spacing: 0.03em;
            font-size: 0.85rem;
            white-space: nowrap;
        }
        .comparison-table thead th:first-child {
            border-radius: var(--radius-xl) 0 0 0;
        }
        .comparison-table thead th:last-child {
            border-radius: 0 var(--radius-xl) 0 0;
        }
        .comparison-table tbody td {
            padding: 0.9rem 1.2rem;
            border-bottom: 1px solid rgba(0, 0, 0, 0.05);
            color: #48484a;
            letter-spacing: 0.02em;
        }
        .comparison-table tbody tr:hover td {
            background: rgba(201, 169, 110, 0.03);
        }
        .comparison-table tbody tr:last-child td {
            border-bottom: none;
        }
        .score-badge {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            font-weight: 700;
            font-size: 0.85rem;
            color: #fff;
            background: var(--color-brand);
        }
        .score-badge.high {
            background: #2d8a4e;
        }
        .score-badge.good {
            background: #c98d2f;
        }
        .score-badge.mid {
            background: #8e8e93;
        }
        @media (max-width: 768px) {
            .comparison-table {
                font-size: 0.78rem;
                min-width: 600px;
            }
            .comparison-table thead th,
            .comparison-table tbody td {
                padding: 0.7rem 0.8rem;
            }
        }

        /* ===== STAT CARDS ROW ===== */
        .stat-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.2rem;
        }
        .stat-card {
            background: #fff;
            border-radius: var(--radius-xl);
            padding: 1.6rem 1.5rem;
            text-align: center;
            border: 1px solid rgba(0, 0, 0, 0.05);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
        }
        .stat-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .stat-card .stat-number {
            font-family: 'Noto Serif SC', 'Source Han Serif SC', Georgia, serif;
            font-size: 2.4rem;
            font-weight: 700;
            color: var(--color-brand);
            letter-spacing: 0.02em;
            line-height: 1;
            margin-bottom: 0.4rem;
        }
        .stat-card .stat-label {
            font-size: 0.85rem;
            color: #6d6d70;
            letter-spacing: 0.03em;
        }
        @media (max-width: 768px) {
            .stat-row {
                grid-template-columns: repeat(2, 1fr);
                gap: 0.8rem;
            }
            .stat-card {
                padding: 1.2rem 1rem;
            }
            .stat-card .stat-number {
                font-size: 1.8rem;
            }
        }
        @media (max-width: 480px) {
            .stat-row {
                grid-template-columns: 1fr 1fr;
            }
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 0.6rem;
        }
        .faq-item {
            background: #fff;
            border-radius: var(--radius-lg);
            border: 1px solid rgba(0, 0, 0, 0.05);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: all var(--transition-fast);
        }
        .faq-item:hover {
            border-color: rgba(201, 169, 110, 0.2);
        }
        .faq-question {
            width: 100%;
            background: none;
            text-align: left;
            padding: 1.1rem 1.4rem;
            font-size: 0.95rem;
            font-weight: 600;
            color: #1c1c1e;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            cursor: pointer;
            letter-spacing: 0.02em;
            transition: color var(--transition-fast);
        }
        .faq-question:hover {
            color: var(--color-brand);
        }
        .faq-question i {
            font-size: 0.85rem;
            color: #8e8e93;
            transition: transform var(--transition-base);
            flex-shrink: 0;
        }
        .faq-item.open .faq-question i {
            transform: rotate(45deg);
            color: var(--color-brand);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-base);
            padding: 0 1.4rem;
            font-size: 0.88rem;
            color: #48484a;
            line-height: 1.65;
            letter-spacing: 0.02em;
        }
        .faq-item.open .faq-answer {
            max-height: 320px;
            padding: 0 1.4rem 1.2rem;
        }

        /* ===== CTA SECTION ===== */
        .cta-section {
            background: linear-gradient(160deg, #1c1c1e 0%, #2a2a2d 40%, #1c1c1e 100%);
            padding: 4rem 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -80px;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(201, 169, 110, 0.18) 0%, transparent 70%);
            border-radius: 50%;
            z-index: 0;
        }
        .cta-section .cta-content {
            position: relative;
            z-index: 1;
            max-width: 600px;
            margin: 0 auto;
        }
        .cta-section h2 {
            font-family: 'Noto Serif SC', 'Source Han Serif SC', Georgia, serif;
            font-size: 2rem;
            font-weight: 700;
            color: #f5f5f7;
            letter-spacing: 0.03em;
            margin-bottom: 0.8rem;
        }
        .cta-section p {
            color: var(--color-text-on-dark-muted);
            font-size: 0.95rem;
            margin-bottom: 1.8rem;
            letter-spacing: 0.02em;
        }
        .btn-brand {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: var(--color-brand);
            color: #fff;
            font-weight: 600;
            font-size: 0.95rem;
            padding: 0.75rem 2rem;
            border-radius: 2rem;
            letter-spacing: 0.03em;
            transition: all var(--transition-base);
            box-shadow: 0 4px 18px rgba(201, 169, 110, 0.35);
        }
        .btn-brand:hover {
            background: #b8953a;
            box-shadow: 0 6px 24px rgba(201, 169, 110, 0.5);
            transform: translateY(-2px);
        }
        @media (max-width: 768px) {
            .cta-section {
                padding: 3rem 0;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
        }

        /* ===== FOOTER ===== */
        .site-footer {
            background: #161618;
            color: #f5f5f7;
            padding: 3.5rem 0 1.5rem;
            font-size: 0.9rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 2.5rem;
            margin-bottom: 2rem;
        }
        .footer-brand {
            font-family: 'Noto Serif SC', 'Source Han Serif SC', Georgia, serif;
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 0.8rem;
            letter-spacing: 0.03em;
            color: #fff;
        }
        .footer-col h4 {
            font-size: 0.85rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.06em;
            color: rgba(255, 255, 255, 0.55);
            margin-bottom: 1rem;
        }
        .footer-col a {
            display: block;
            color: rgba(255, 255, 255, 0.65);
            font-size: 0.88rem;
            padding: 0.25rem 0;
            transition: color var(--transition-fast);
            letter-spacing: 0.02em;
        }
        .footer-col a:hover {
            color: var(--color-brand-light);
        }
        .footer-disclaimer {
            font-size: 0.78rem;
            color: rgba(255, 255, 255, 0.38);
            line-height: 1.6;
            margin-top: 0.6rem;
            letter-spacing: 0.02em;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 1.2rem;
            text-align: center;
            font-size: 0.78rem;
            color: rgba(255, 255, 255, 0.4);
            letter-spacing: 0.03em;
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 1.8rem;
            }
            .footer-col:first-child {
                grid-column: 1 / -1;
            }
        }
        @media (max-width: 480px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
        }

        /* ===== UTILITY ===== */
        .text-brand {
            color: var(--color-brand);
        }
        .mt-0 {
            margin-top: 0;
        }
        .mb-0 {
            margin-bottom: 0;
        }

/* roulang page: category1 */
:root {
            --color-primary: #1c1c1e;
            --color-accent: #c9a96e;
            --color-accent-hover: #b8944f;
            --color-accent-light: #f0e6d3;
            --color-bg: #f9f7f2;
            --color-surface: #ffffff;
            --color-text: #1c1c1e;
            --color-text-secondary: #6e6e73;
            --color-text-tertiary: #9a9a9f;
            --color-border: #e5e2db;
            --color-border-light: #f0ede7;
            --color-rating-star: #d4a853;
            --color-success: #3a7d5a;
            --color-warning: #c9a96e;
            --color-badge-bg: #f5f2eb;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-xs: 0 1px 2px rgba(28, 28, 30, 0.04);
            --shadow-sm: 0 2px 8px rgba(28, 28, 30, 0.06);
            --shadow-md: 0 6px 20px rgba(28, 28, 30, 0.08);
            --shadow-lg: 0 12px 36px rgba(28, 28, 30, 0.10);
            --shadow-xl: 0 20px 50px rgba(28, 28, 30, 0.13);
            --space-xs: 0.5rem;
            --space-sm: 0.75rem;
            --space-md: 1rem;
            --space-lg: 1.5rem;
            --space-xl: 2rem;
            --space-2xl: 2.5rem;
            --space-3xl: 3.5rem;
            --space-4xl: 5rem;
            --font-sans: 'Inter', 'PingFang SC', 'Noto Sans SC', 'Microsoft YaHei', 'Helvetica Neue', system-ui, -apple-system, sans-serif;
            --font-serif: 'Georgia', 'Noto Serif SC', 'STSong', 'SimSun', 'Times New Roman', serif;
            --transition-fast: 0.18s cubic-bezier(0.25, 0.1, 0.25, 1);
            --transition-smooth: 0.3s cubic-bezier(0.25, 0.1, 0.25, 1);
            --transition-spring: 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            font-size: 16px;
        }

        body {
            font-family: var(--font-sans);
            line-height: 1.65;
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
            overflow-x: hidden;
            letter-spacing: 0.01em;
        }

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

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

        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            background: none;
            font-size: inherit;
        }

        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }

        ul,
        ol {
            list-style: none;
        }

        .container {
            width: 100%;
            max-width: 1260px;
            margin: 0 auto;
            padding: 0 var(--space-xl);
        }

        /* Header & Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.88);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--color-border-light);
            transition: box-shadow var(--transition-smooth);
        }

        .site-header.scrolled {
            box-shadow: var(--shadow-md);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
            gap: var(--space-lg);
        }

        .logo-link {
            display: flex;
            align-items: center;
            gap: var(--space-xs);
            font-weight: 700;
            font-size: 1.25rem;
            letter-spacing: -0.01em;
            color: var(--color-primary);
            white-space: nowrap;
            flex-shrink: 0;
        }

        .logo-link .logo-dot {
            display: inline-block;
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--color-accent);
            flex-shrink: 0;
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: var(--space-xs);
            flex-wrap: nowrap;
        }

        .nav-menu a {
            display: inline-flex;
            align-items: center;
            padding: 0.45rem 0.9rem;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--color-text-secondary);
            transition: all var(--transition-fast);
            white-space: nowrap;
            position: relative;
            letter-spacing: 0.01em;
        }

        .nav-menu a:hover {
            color: var(--color-primary);
            background: rgba(28, 28, 30, 0.04);
        }

        .nav-menu a.active {
            color: var(--color-primary);
            background: rgba(28, 28, 30, 0.06);
            font-weight: 600;
        }

        .nav-menu a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 18px;
            height: 3px;
            border-radius: 2px;
            background: var(--color-accent);
        }

        .nav-cta {
            background: var(--color-accent) !important;
            color: #fff !important;
            font-weight: 600 !important;
            padding: 0.5rem 1.2rem !important;
            border-radius: var(--radius-md) !important;
            transition: all var(--transition-smooth) !important;
            box-shadow: 0 2px 8px rgba(201, 169, 110, 0.25);
            letter-spacing: 0.02em !important;
        }

        .nav-cta:hover {
            background: var(--color-accent-hover) !important;
            box-shadow: 0 4px 16px rgba(201, 169, 110, 0.4) !important;
            transform: translateY(-1px);
        }

        .nav-cta::after {
            display: none !important;
        }

        .mobile-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            padding: 8px;
            z-index: 1001;
            background: none;
            border: none;
            width: 40px;
            height: 32px;
            justify-content: center;
            align-items: center;
        }

        .mobile-toggle span {
            display: block;
            width: 24px;
            height: 2.5px;
            background: var(--color-primary);
            border-radius: 2px;
            transition: all var(--transition-smooth);
            transform-origin: center;
        }

        .mobile-toggle.active span:nth-child(1) {
            transform: translateY(7.5px) rotate(45deg);
        }
        .mobile-toggle.active span:nth-child(2) {
            opacity: 0;
            transform: scaleX(0);
        }
        .mobile-toggle.active span:nth-child(3) {
            transform: translateY(-7.5px) rotate(-45deg);
        }

        @media (max-width: 920px) {
            .mobile-toggle {
                display: flex;
            }
            .nav-menu {
                position: fixed;
                top: 0;
                right: -100%;
                width: 280px;
                height: 100vh;
                background: #fff;
                flex-direction: column;
                padding: 80px var(--space-xl) var(--space-xl);
                gap: var(--space-sm);
                box-shadow: var(--shadow-xl);
                transition: right var(--transition-smooth);
                z-index: 999;
                align-items: stretch;
            }
            .nav-menu.open {
                right: 0;
            }
            .nav-menu a {
                padding: 0.7rem 1rem;
                font-size: 0.95rem;
                border-radius: var(--radius-md);
                justify-content: flex-start;
            }
            .nav-menu a.active::after {
                display: none;
            }
            .nav-menu a.active {
                border-left: 3px solid var(--color-accent);
                border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            }
            .nav-cta {
                text-align: center;
                justify-content: center !important;
                margin-top: var(--space-md);
            }
            .overlay {
                display: none;
                position: fixed;
                inset: 0;
                background: rgba(0, 0, 0, 0.4);
                z-index: 998;
            }
            .overlay.show {
                display: block;
            }
        }

        @media (max-width: 520px) {
            .header-inner {
                height: 56px;
            }
            .logo-link {
                font-size: 1.1rem;
            }
            .logo-link .logo-dot {
                width: 8px;
                height: 8px;
            }
            .nav-menu {
                width: 100%;
                right: -100%;
            }
            .container {
                padding: 0 var(--space-md);
            }
        }

        /* Page Banner */
        .page-banner {
            position: relative;
            background-image: url('assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center 30%;
            background-repeat: no-repeat;
            padding: var(--space-4xl) 0;
            display: flex;
            align-items: center;
            min-height: 340px;
            overflow: hidden;
            isolation: isolate;
        }

        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg,
                    rgba(28, 28, 30, 0.82) 0%,
                    rgba(28, 28, 30, 0.55) 40%,
                    rgba(28, 28, 30, 0.35) 100%);
            z-index: 1;
        }

        .page-banner::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 60px;
            background: linear-gradient(to top, var(--color-bg), transparent);
            z-index: 2;
        }

        .banner-content {
            position: relative;
            z-index: 3;
            max-width: 700px;
        }

        .banner-breadcrumb {
            display: flex;
            align-items: center;
            gap: var(--space-xs);
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: var(--space-md);
            flex-wrap: wrap;
        }

        .banner-breadcrumb a {
            color: rgba(255, 255, 255, 0.85);
            transition: color var(--transition-fast);
        }

        .banner-breadcrumb a:hover {
            color: #fff;
        }

        .banner-breadcrumb .sep {
            color: rgba(255, 255, 255, 0.45);
        }

        .banner-content h1 {
            font-size: 2.6rem;
            font-weight: 700;
            color: #fff;
            line-height: 1.2;
            letter-spacing: -0.02em;
            margin-bottom: var(--space-md);
        }

        .banner-content .banner-subtitle {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.8);
            line-height: 1.6;
            max-width: 520px;
        }

        @media (max-width: 768px) {
            .page-banner {
                min-height: 260px;
                padding: var(--space-3xl) 0;
            }
            .banner-content h1 {
                font-size: 1.9rem;
            }
            .banner-content .banner-subtitle {
                font-size: 0.95rem;
            }
        }

        @media (max-width: 520px) {
            .page-banner {
                min-height: 220px;
                padding: var(--space-2xl) 0;
            }
            .banner-content h1 {
                font-size: 1.55rem;
            }
            .banner-content .banner-subtitle {
                font-size: 0.88rem;
            }
            .banner-breadcrumb {
                font-size: 0.78rem;
            }
        }

        /* Main Content */
        .main-content {
            padding: var(--space-4xl) 0 var(--space-3xl);
        }

        .section {
            margin-bottom: var(--space-4xl);
        }

        .section-header {
            text-align: center;
            margin-bottom: var(--space-3xl);
        }

        .section-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.08em;
            color: var(--color-accent);
            background: var(--color-accent-light);
            padding: 0.3rem 0.9rem;
            border-radius: 20px;
            margin-bottom: var(--space-sm);
        }

        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: -0.02em;
            line-height: 1.25;
            margin-bottom: var(--space-sm);
        }

        .section-desc {
            font-size: 1rem;
            color: var(--color-text-secondary);
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.7;
        }

        @media (max-width: 768px) {
            .section-title {
                font-size: 1.55rem;
            }
            .section-desc {
                font-size: 0.9rem;
            }
            .section {
                margin-bottom: var(--space-3xl);
            }
        }

        /* Criteria Grid */
        .criteria-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--space-lg);
        }

        .criteria-card {
            background: var(--color-surface);
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius-lg);
            padding: var(--space-xl);
            text-align: center;
            transition: all var(--transition-smooth);
            position: relative;
        }

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

        .criteria-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 56px;
            height: 56px;
            border-radius: var(--radius-md);
            background: var(--color-accent-light);
            color: var(--color-accent);
            font-size: 1.5rem;
            margin-bottom: var(--space-md);
            font-weight: 700;
        }

        .criteria-card h3 {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--color-primary);
            margin-bottom: var(--space-xs);
            letter-spacing: -0.01em;
        }

        .criteria-card p {
            font-size: 0.88rem;
            color: var(--color-text-secondary);
            line-height: 1.55;
        }

        @media (max-width: 768px) {
            .criteria-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: var(--space-md);
            }
        }

        @media (max-width: 520px) {
            .criteria-grid {
                grid-template-columns: 1fr;
            }
            .criteria-card {
                padding: var(--space-lg);
            }
        }

        /* Platform Review Cards */
        .review-list {
            display: grid;
            grid-template-columns: 1fr;
            gap: var(--space-xl);
        }

        .review-card {
            background: var(--color-surface);
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius-xl);
            overflow: hidden;
            display: grid;
            grid-template-columns: 240px 1fr;
            transition: all var(--transition-smooth);
            box-shadow: var(--shadow-xs);
        }

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

        .review-card-image {
            position: relative;
            overflow: hidden;
            min-height: 100%;
            background: #f5f2eb;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .review-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-smooth);
        }

        .review-card:hover .review-card-image img {
            transform: scale(1.04);
        }

        .review-card-body {
            padding: var(--space-xl) var(--space-2xl);
            display: flex;
            flex-direction: column;
            gap: var(--space-md);
        }

        .review-card-header {
            display: flex;
            align-items: flex-start;
            justify-content: space-between;
            gap: var(--space-md);
            flex-wrap: wrap;
        }

        .review-card-header h2 {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: -0.01em;
            line-height: 1.2;
        }

        .review-score {
            display: flex;
            align-items: center;
            gap: var(--space-xs);
            background: var(--color-accent-light);
            padding: 0.4rem 0.9rem;
            border-radius: 20px;
            font-weight: 700;
            font-size: 1.1rem;
            color: var(--color-accent);
            white-space: nowrap;
            flex-shrink: 0;
        }

        .review-score .score-num {
            font-size: 1.4rem;
        }

        .review-meta {
            display: flex;
            flex-wrap: wrap;
            gap: var(--space-md);
            font-size: 0.85rem;
            color: var(--color-text-tertiary);
        }

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

        .review-tags {
            display: flex;
            flex-wrap: wrap;
            gap: var(--space-xs);
        }

        .tag {
            display: inline-block;
            font-size: 0.78rem;
            font-weight: 500;
            padding: 0.25rem 0.7rem;
            border-radius: 14px;
            background: var(--color-badge-bg);
            color: var(--color-text-secondary);
            letter-spacing: 0.01em;
        }

        .tag.accent {
            background: var(--color-accent-light);
            color: var(--color-accent);
            font-weight: 600;
        }

        .tag.success {
            background: #e8f4ed;
            color: var(--color-success);
        }

        .review-detail-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--space-sm);
            margin-top: var(--space-xs);
        }

        .review-detail-item {
            display: flex;
            flex-direction: column;
            gap: 2px;
        }

        .review-detail-item .detail-label {
            font-size: 0.75rem;
            color: var(--color-text-tertiary);
            text-transform: uppercase;
            letter-spacing: 0.04em;
        }

        .review-detail-item .detail-value {
            font-size: 0.92rem;
            font-weight: 600;
            color: var(--color-primary);
        }

        .review-detail-item .stars {
            color: var(--color-rating-star);
            letter-spacing: 1px;
            font-size: 0.85rem;
        }

        .review-card-body .review-excerpt {
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            line-height: 1.6;
            margin-top: var(--space-xs);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        @media (max-width: 820px) {
            .review-card {
                grid-template-columns: 1fr;
            }
            .review-card-image {
                height: 200px;
                min-height: auto;
            }
            .review-card-body {
                padding: var(--space-lg);
            }
            .review-detail-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 520px) {
            .review-detail-grid {
                grid-template-columns: 1fr 1fr;
            }
            .review-card-header h2 {
                font-size: 1.15rem;
            }
            .review-score {
                font-size: 0.95rem;
            }
            .review-score .score-num {
                font-size: 1.2rem;
            }
            .review-card-body {
                padding: var(--space-md);
            }
        }

        /* Comparison Table */
        .comparison-wrapper {
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border-light);
            background: var(--color-surface);
            box-shadow: var(--shadow-sm);
        }

        .comparison-table {
            width: 100%;
            min-width: 700px;
            border-collapse: collapse;
            font-size: 0.9rem;
        }

        .comparison-table thead th {
            background: var(--color-primary);
            color: #fff;
            padding: var(--space-md) var(--space-lg);
            text-align: left;
            font-weight: 600;
            font-size: 0.85rem;
            letter-spacing: 0.03em;
            white-space: nowrap;
            position: sticky;
            top: 0;
        }

        .comparison-table thead th:first-child {
            border-radius: var(--radius-lg) 0 0 0;
        }

        .comparison-table thead th:last-child {
            border-radius: 0 var(--radius-lg) 0 0;
        }

        .comparison-table tbody td {
            padding: var(--space-md) var(--space-lg);
            border-bottom: 1px solid var(--color-border-light);
            color: var(--color-text-secondary);
            white-space: nowrap;
        }

        .comparison-table tbody tr:hover {
            background: rgba(201, 169, 110, 0.04);
        }

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

        .comparison-table .platform-name {
            font-weight: 600;
            color: var(--color-primary);
        }

        .comparison-table .score-cell {
            font-weight: 700;
            color: var(--color-accent);
            font-size: 1rem;
        }

        .comparison-table .star-cell {
            color: var(--color-rating-star);
            letter-spacing: 2px;
        }

        .comparison-table .badge-cell {
            display: inline-block;
            padding: 0.2rem 0.6rem;
            border-radius: 12px;
            font-size: 0.75rem;
            font-weight: 600;
        }

        .badge-high {
            background: #e8f4ed;
            color: var(--color-success);
        }
        .badge-medium {
            background: var(--color-accent-light);
            color: var(--color-accent);
        }

        @media (max-width: 768px) {
            .comparison-wrapper {
                border-radius: var(--radius-md);
            }
            .comparison-table {
                min-width: 600px;
                font-size: 0.8rem;
            }
            .comparison-table thead th,
            .comparison-table tbody td {
                padding: var(--space-sm) var(--space-md);
            }
        }

        /* FAQ */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: var(--space-sm);
        }

        .faq-item {
            background: var(--color-surface);
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all var(--transition-smooth);
            box-shadow: var(--shadow-xs);
        }

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

        .faq-question {
            width: 100%;
            text-align: left;
            padding: var(--space-lg) var(--space-xl);
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-primary);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--space-md);
            letter-spacing: 0.01em;
            transition: color var(--transition-fast);
        }

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

        .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--color-accent-light);
            color: var(--color-accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            font-weight: 700;
            transition: all var(--transition-smooth);
        }

        .faq-item.open .faq-icon {
            background: var(--color-accent);
            color: #fff;
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-smooth), padding var(--transition-smooth);
            padding: 0 var(--space-xl);
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 var(--space-xl) var(--space-lg);
        }

        .faq-answer-inner {
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            line-height: 1.7;
            border-top: 1px solid var(--color-border-light);
            padding-top: var(--space-md);
        }

        @media (max-width: 520px) {
            .faq-question {
                padding: var(--space-md);
                font-size: 0.9rem;
            }
            .faq-item.open .faq-answer {
                padding: 0 var(--space-md) var(--space-md);
            }
            .faq-answer-inner {
                font-size: 0.83rem;
            }
        }

        /* CTA Section */
        .cta-section {
            background: var(--color-primary);
            border-radius: var(--radius-xl);
            padding: var(--space-4xl) var(--space-3xl);
            text-align: center;
            position: relative;
            overflow: hidden;
            isolation: isolate;
            box-shadow: var(--shadow-xl);
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 70% 30%, rgba(201, 169, 110, 0.2) 0%, transparent 60%);
            z-index: 1;
            pointer-events: none;
        }

        .cta-content {
            position: relative;
            z-index: 2;
        }

        .cta-section h2 {
            font-size: 2rem;
            font-weight: 700;
            color: #fff;
            letter-spacing: -0.02em;
            margin-bottom: var(--space-md);
        }

        .cta-section p {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.7);
            max-width: 500px;
            margin: 0 auto var(--space-xl);
            line-height: 1.6;
        }

        .btn-group {
            display: flex;
            gap: var(--space-md);
            justify-content: center;
            flex-wrap: wrap;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 0.75rem 1.8rem;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 0.95rem;
            letter-spacing: 0.02em;
            transition: all var(--transition-smooth);
            cursor: pointer;
            white-space: nowrap;
        }

        .btn-primary {
            background: var(--color-accent);
            color: #fff;
            box-shadow: 0 4px 16px rgba(201, 169, 110, 0.35);
        }

        .btn-primary:hover {
            background: var(--color-accent-hover);
            box-shadow: 0 6px 24px rgba(201, 169, 110, 0.5);
            transform: translateY(-2px);
        }

        .btn-outline {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.4);
        }

        .btn-outline:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.06);
            transform: translateY(-2px);
        }

        @media (max-width: 520px) {
            .cta-section {
                padding: var(--space-3xl) var(--space-xl);
                border-radius: var(--radius-lg);
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .cta-section p {
                font-size: 0.9rem;
            }
            .btn {
                padding: 0.65rem 1.4rem;
                font-size: 0.88rem;
            }
        }

        /* Footer */
        .site-footer {
            background: var(--color-primary);
            color: #fff;
            padding: var(--space-4xl) 0 var(--space-xl);
            margin-top: var(--space-3xl);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: var(--space-2xl);
            margin-bottom: var(--space-3xl);
        }

        .footer-brand {
            font-size: 1.3rem;
            font-weight: 700;
            letter-spacing: -0.01em;
            margin-bottom: var(--space-sm);
            color: #fff;
        }

        .footer-disclaimer {
            font-size: 0.78rem;
            color: rgba(255, 255, 255, 0.4);
            line-height: 1.55;
            margin-top: var(--space-sm);
        }

        .footer-col h4 {
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.04em;
            text-transform: uppercase;
            margin-bottom: var(--space-md);
            color: rgba(255, 255, 255, 0.6);
        }

        .footer-col a {
            display: block;
            font-size: 0.88rem;
            color: rgba(255, 255, 255, 0.7);
            padding: 0.3rem 0;
            transition: color var(--transition-fast);
        }

        .footer-col a:hover {
            color: var(--color-accent);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: var(--space-lg);
            text-align: center;
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.4);
            letter-spacing: 0.02em;
        }

        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: var(--space-xl);
            }
        }

        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: var(--space-lg);
            }
            .site-footer {
                padding: var(--space-3xl) 0 var(--space-lg);
            }
        }

/* roulang page: category4 */
:root {
            --color-primary: #1a1a2e;
            --color-accent: #d4af37;
            --color-accent-soft: #c5a028;
            --color-bg: #faf9f7;
            --color-surface: #ffffff;
            --color-text: #2c2c2c;
            --color-text-soft: #6b6b6b;
            --color-border: #e5e2dc;
            --color-nav-bg: #0f0f1a;
            --color-footer-bg: #0a0a14;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 6px 20px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 14px 36px rgba(0, 0, 0, 0.09);
            --transition-base: 0.25s ease;
            --font-sans: 'Inter', 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
            --spacing-xs: 0.5rem;
            --spacing-sm: 1rem;
            --spacing-md: 1.75rem;
            --spacing-lg: 3rem;
            --spacing-xl: 5rem;
            --container-max: 1280px;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-sans);
            background-color: var(--color-bg);
            color: var(--color-text);
            line-height: 1.6;
            font-size: 16px;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

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

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

        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
            transition: all var(--transition-base);
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 var(--spacing-md);
        }

        /* Header & Navigation */
        .site-header {
            background-color: var(--color-nav-bg);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.2);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0.85rem 0;
        }

        .logo {
            font-size: 1.45rem;
            font-weight: 700;
            letter-spacing: 0.02em;
            color: #ffffff;
            white-space: nowrap;
        }
        .logo span {
            color: var(--color-accent);
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 0.25rem;
            flex-wrap: wrap;
        }

        .nav-menu a {
            display: inline-block;
            padding: 0.55rem 1.1rem;
            border-radius: var(--radius-sm);
            color: rgba(255, 255, 255, 0.82);
            font-size: 0.95rem;
            font-weight: 500;
            letter-spacing: 0.01em;
            transition: all var(--transition-base);
            white-space: nowrap;
        }

        .nav-menu a:hover {
            color: #ffffff;
            background-color: rgba(255, 255, 255, 0.08);
        }
        .nav-menu a.active {
            color: #ffffff;
            background-color: rgba(212, 175, 55, 0.18);
            font-weight: 600;
        }
        .nav-cta {
            background-color: var(--color-accent) !important;
            color: #1a1a2e !important;
            font-weight: 600 !important;
            padding: 0.6rem 1.4rem !important;
            border-radius: 30px !important;
            margin-left: 0.5rem;
        }
        .nav-cta:hover {
            background-color: var(--color-accent-soft) !important;
            color: #0a0a14 !important;
            transform: translateY(-1px);
            box-shadow: 0 4px 14px rgba(212, 175, 55, 0.35);
        }

        .mobile-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            padding: 0.4rem;
            cursor: pointer;
        }
        .mobile-toggle span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: #ffffff;
            border-radius: 4px;
            transition: var(--transition-base);
        }

        /* Page Banner */
        .page-banner {
            background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
            position: relative;
            overflow: hidden;
            padding: 4rem 0;
            color: #ffffff;
            text-align: center;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('assets/images/backpic/back-3.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.22;
            z-index: 0;
        }
        .banner-content {
            position: relative;
            z-index: 1;
        }
        .banner-content h1 {
            font-size: 2.8rem;
            font-weight: 700;
            letter-spacing: 0.03em;
            margin-bottom: 0.75rem;
        }
        .banner-content p {
            font-size: 1.2rem;
            color: rgba(255, 255, 255, 0.78);
            max-width: 680px;
            margin: 0 auto;
        }

        /* Main Content */
        .main-content {
            flex: 1;
            padding: var(--spacing-lg) 0;
        }

        .section {
            margin-bottom: var(--spacing-xl);
        }
        .section-header {
            margin-bottom: var(--spacing-md);
        }
        .section-header h2 {
            font-size: 2rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 0.5rem;
        }
        .section-header p {
            color: var(--color-text-soft);
            font-size: 1.05rem;
        }

        /* Strategy Cards Grid */
        .strategy-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 1.8rem;
        }
        .strategy-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border);
            overflow: hidden;
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
        }
        .strategy-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
            border-color: #d0cbbf;
        }
        .card-img-wrap {
            height: 180px;
            overflow: hidden;
            background-color: #e9e5dc;
        }
        .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .strategy-card:hover .card-img-wrap img {
            transform: scale(1.04);
        }
        .card-body {
            padding: 1.5rem;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .card-body h3 {
            font-size: 1.3rem;
            font-weight: 650;
            color: var(--color-primary);
            margin-bottom: 0.6rem;
        }
        .card-body p {
            color: var(--color-text-soft);
            font-size: 0.95rem;
            line-height: 1.55;
            flex: 1;
        }
        .card-tag {
            display: inline-block;
            background-color: rgba(212, 175, 55, 0.12);
            color: #8b7318;
            padding: 0.3rem 0.85rem;
            border-radius: 30px;
            font-size: 0.78rem;
            font-weight: 600;
            letter-spacing: 0.02em;
            margin-top: 1rem;
            align-self: flex-start;
        }

        /* Key Points List */
        .points-list {
            list-style: none;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 1.2rem;
        }
        .points-list li {
            background: var(--color-surface);
            border-radius: var(--radius-md);
            padding: 1.5rem;
            box-shadow: var(--shadow-sm);
            border-left: 4px solid var(--color-accent);
            transition: all var(--transition-base);
        }
        .points-list li:hover {
            box-shadow: var(--shadow-md);
            transform: translateX(4px);
        }
        .points-list li strong {
            display: block;
            font-size: 1.1rem;
            color: var(--color-primary);
            margin-bottom: 0.4rem;
        }
        .points-list li span {
            color: var(--color-text-soft);
            font-size: 0.93rem;
        }

        /* Numbered Steps */
        .steps-ol {
            list-style: none;
            counter-reset: step-counter;
            display: flex;
            flex-direction: column;
            gap: 1.5rem;
        }
        .steps-ol li {
            counter-increment: step-counter;
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            padding: 1.8rem;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border);
            display: flex;
            gap: 1.5rem;
            align-items: flex-start;
            transition: all var(--transition-base);
        }
        .steps-ol li:hover {
            box-shadow: var(--shadow-md);
            border-color: #ccc6b9;
        }
        .step-number {
            flex-shrink: 0;
            width: 44px;
            height: 44px;
            background-color: var(--color-accent);
            color: #1a1a2e;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1.2rem;
        }
        .step-text h4 {
            font-size: 1.2rem;
            font-weight: 650;
            color: var(--color-primary);
            margin-bottom: 0.3rem;
        }
        .step-text p {
            color: var(--color-text-soft);
            font-size: 0.95rem;
            line-height: 1.6;
        }

        /* CTA */
        .cta-section {
            background: linear-gradient(145deg, #1a1a2e 0%, #16213e 100%);
            color: #ffffff;
            text-align: center;
            padding: 4rem 2rem;
            border-radius: var(--radius-lg);
            margin-top: var(--spacing-xl);
        }
        .cta-section h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 0.75rem;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.78);
            margin-bottom: 2rem;
            font-size: 1.05rem;
        }
        .btn-primary {
            display: inline-block;
            background-color: var(--color-accent);
            color: #1a1a2e;
            font-weight: 700;
            padding: 0.85rem 2.2rem;
            border-radius: 40px;
            font-size: 1rem;
            letter-spacing: 0.02em;
            transition: all var(--transition-base);
            box-shadow: 0 4px 16px rgba(212, 175, 55, 0.3);
        }
        .btn-primary:hover {
            background-color: #cfaa2e;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(212, 175, 55, 0.4);
        }

        /* Footer */
        .site-footer {
            background-color: var(--color-footer-bg);
            color: #ffffff;
            padding: 3.5rem 0 1.8rem;
            margin-top: auto;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 2rem;
            margin-bottom: 2.5rem;
        }
        .footer-brand {
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 0.6rem;
        }
        .footer-disclaimer {
            font-size: 0.78rem;
            color: rgba(255, 255, 255, 0.4);
            margin-top: 0.8rem;
            line-height: 1.5;
        }
        .footer-col h4 {
            font-size: 1rem;
            font-weight: 650;
            margin-bottom: 1rem;
            color: rgba(255, 255, 255, 0.9);
        }
        .footer-col a {
            display: block;
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.9rem;
            margin-bottom: 0.5rem;
            transition: color var(--transition-base);
        }
        .footer-col a:hover {
            color: var(--color-accent);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 1.5rem;
            text-align: center;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.45);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .banner-content h1 {
                font-size: 2.2rem;
            }
            .strategy-grid {
                grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
            }
        }

        @media (max-width: 768px) {
            .mobile-toggle {
                display: flex;
            }
            .nav-menu {
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background-color: #0f0f1a;
                flex-direction: column;
                padding: 1rem;
                gap: 0.3rem;
                display: none;
                box-shadow: 0 10px 20px rgba(0, 0, 0, 0.4);
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-menu a {
                width: 100%;
                text-align: center;
                padding: 0.8rem;
            }
            .nav-cta {
                margin-left: 0;
                border-radius: var(--radius-sm) !important;
            }
            .header-inner {
                padding: 0.7rem 0;
            }
            .banner-content h1 {
                font-size: 1.9rem;
            }
            .strategy-grid {
                grid-template-columns: 1fr;
            }
            .points-list {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 520px) {
            .logo {
                font-size: 1.2rem;
            }
            .banner-content h1 {
                font-size: 1.6rem;
            }
            .section-header h2 {
                font-size: 1.5rem;
            }
            .cta-section {
                padding: 2.5rem 1rem;
            }
        }

/* roulang page: category2 */
:root {
            --color-primary: #0d1117;
            --color-primary-soft: #161b22;
            --color-accent: #c9a050;
            --color-accent-light: #d9b868;
            --color-accent-glow: rgba(201, 160, 80, 0.25);
            --color-accent-subtle: rgba(201, 160, 80, 0.08);
            --color-text: #e6e6e6;
            --color-text-strong: #f5f5f5;
            --color-text-weak: #9aa0a8;
            --color-text-muted: #6e737a;
            --color-bg: #0a0e13;
            --color-bg-elevated: #11161d;
            --color-bg-card: #161b24;
            --color-bg-card-hover: #1a202a;
            --color-border: rgba(255, 255, 255, 0.08);
            --color-border-light: rgba(255, 255, 255, 0.12);
            --color-border-accent: rgba(201, 160, 80, 0.3);
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --radius-full: 50%;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.35);
            --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.45);
            --shadow-glow: 0 0 40px rgba(201, 160, 80, 0.12);
            --shadow-card: 0 2px 12px rgba(0, 0, 0, 0.3);
            --shadow-card-hover: 0 6px 24px rgba(0, 0, 0, 0.45), 0 0 0 1px rgba(201, 160, 80, 0.15);
            --transition-fast: 0.18s ease;
            --transition-base: 0.28s ease;
            --transition-slow: 0.4s ease;
            --font-body: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            --font-heading: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', 'Segoe UI', system-ui, sans-serif;
            --font-mono: 'SF Mono', 'JetBrains Mono', 'Consolas', 'Monaco', monospace;
            --space-xs: 6px;
            --space-sm: 12px;
            --space-md: 18px;
            --space-lg: 28px;
            --space-xl: 40px;
            --space-2xl: 56px;
            --space-3xl: 72px;
            --container-max: 1200px;
            --container-narrow: 880px;
            --nav-height: 64px;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            text-rendering: optimizeLegibility;
        }

        body {
            font-family: var(--font-body);
            background-color: var(--color-bg);
            color: var(--color-text);
            line-height: 1.7;
            font-size: 16px;
            min-height: 100vh;
            letter-spacing: 0.01em;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border: 0;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-fast);
        }
        button {
            cursor: pointer;
            border: none;
            font-family: inherit;
            font-size: inherit;
            outline: none;
        }
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            outline: none;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-family: var(--font-heading);
            font-weight: 600;
            line-height: 1.3;
            color: var(--color-text-strong);
        }

        .container {
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }
        .container-narrow {
            max-width: var(--container-narrow);
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        /* ============ HEADER / NAV ============ */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(13, 17, 23, 0.88);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--color-border);
            height: var(--nav-height);
            display: flex;
            align-items: center;
            transition: background var(--transition-base), box-shadow var(--transition-base);
        }
        .site-header.scrolled {
            box-shadow: var(--shadow-md);
            background: rgba(13, 17, 23, 0.95);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
            gap: var(--space-lg);
        }
        .logo-link {
            display: flex;
            align-items: center;
            gap: 8px;
            font-weight: 700;
            font-size: 1.25rem;
            color: var(--color-text-strong);
            letter-spacing: 0.03em;
            white-space: nowrap;
            flex-shrink: 0;
        }
        .logo-dot {
            width: 10px;
            height: 10px;
            border-radius: var(--radius-full);
            background: var(--color-accent);
            box-shadow: 0 0 10px var(--color-accent-glow);
            flex-shrink: 0;
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
        }
        .nav-menu a {
            display: inline-flex;
            align-items: center;
            padding: 8px 15px;
            border-radius: var(--radius-md);
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--color-text-weak);
            transition: color var(--transition-fast), background var(--transition-fast);
            white-space: nowrap;
            letter-spacing: 0.02em;
        }
        .nav-menu a:hover {
            color: var(--color-text-strong);
            background: rgba(255, 255, 255, 0.04);
        }
        .nav-menu a.active {
            color: var(--color-accent);
            background: var(--color-accent-subtle);
            font-weight: 600;
        }
        .nav-cta {
            background: var(--color-accent) !important;
            color: #0d1117 !important;
            font-weight: 600 !important;
            padding: 9px 18px !important;
            border-radius: var(--radius-md) !important;
            transition: background var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast) !important;
            letter-spacing: 0.03em !important;
        }
        .nav-cta:hover {
            background: var(--color-accent-light) !important;
            transform: translateY(-1px);
            box-shadow: 0 4px 18px var(--color-accent-glow);
            color: #0d1117 !important;
        }
        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--color-text-strong);
            font-size: 1.5rem;
            padding: 6px 8px;
            border-radius: var(--radius-sm);
            cursor: pointer;
            line-height: 1;
            transition: background var(--transition-fast);
        }
        .mobile-toggle:hover {
            background: rgba(255, 255, 255, 0.06);
        }

        /* ============ PAGE BANNER ============ */
        .page-banner {
            position: relative;
            background: var(--color-primary-soft);
            background-image: url('assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center 35%;
            background-repeat: no-repeat;
            padding: var(--space-3xl) 0 var(--space-2xl);
            min-height: 320px;
            display: flex;
            align-items: center;
            overflow: hidden;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(13, 17, 23, 0.65) 0%, rgba(13, 17, 23, 0.82) 60%, rgba(10, 14, 19, 0.94) 100%);
            z-index: 1;
        }
        .page-banner::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: radial-gradient(ellipse at 40% 55%, rgba(201, 160, 80, 0.1) 0%, transparent 60%);
            z-index: 2;
            pointer-events: none;
        }
        .banner-content {
            position: relative;
            z-index: 3;
            text-align: center;
        }
        .banner-badge {
            display: inline-block;
            padding: 6px 16px;
            border-radius: 20px;
            background: var(--color-accent-subtle);
            border: 1px solid var(--color-border-accent);
            color: var(--color-accent);
            font-size: 0.85rem;
            font-weight: 500;
            letter-spacing: 0.05em;
            margin-bottom: var(--space-md);
        }
        .page-banner h1 {
            font-size: 2.6rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: var(--space-sm);
            letter-spacing: 0.04em;
        }
        .page-banner .banner-subtitle {
            font-size: 1.1rem;
            color: var(--color-text-weak);
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.6;
        }

        /* ============ SECTION COMMON ============ */
        .section {
            padding: var(--space-2xl) 0;
        }
        .section-alt {
            background: var(--color-bg-elevated);
            border-top: 1px solid var(--color-border);
            border-bottom: 1px solid var(--color-border);
        }
        .section-header {
            text-align: center;
            margin-bottom: var(--space-xl);
        }
        .section-header h2 {
            font-size: 1.9rem;
            font-weight: 700;
            color: var(--color-text-strong);
            margin-bottom: var(--space-xs);
            letter-spacing: 0.03em;
        }
        .section-header .section-line {
            width: 50px;
            height: 3px;
            background: var(--color-accent);
            border-radius: 2px;
            margin: var(--space-sm) auto 0;
        }
        .section-header p {
            color: var(--color-text-weak);
            font-size: 0.95rem;
            max-width: 560px;
            margin: var(--space-sm) auto 0;
        }

        /* ============ CARDS GRID ============ */
        .cards-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: var(--space-lg);
        }
        .card {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: var(--space-lg);
            transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
            position: relative;
            overflow: hidden;
        }
        .card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
            border-color: var(--color-border-accent);
            background: var(--color-bg-card-hover);
        }
        .card-icon {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-md);
            background: var(--color-accent-subtle);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            margin-bottom: var(--space-md);
            color: var(--color-accent);
            flex-shrink: 0;
        }
        .card h3 {
            font-size: 1.15rem;
            margin-bottom: var(--space-xs);
            color: var(--color-text-strong);
        }
        .card p {
            font-size: 0.9rem;
            color: var(--color-text-weak);
            line-height: 1.6;
        }
        .card-tag {
            display: inline-block;
            padding: 4px 10px;
            border-radius: 12px;
            font-size: 0.78rem;
            font-weight: 500;
            background: var(--color-accent-subtle);
            color: var(--color-accent);
            margin-top: var(--space-sm);
            letter-spacing: 0.03em;
        }
        .card-image {
            border-radius: var(--radius-md);
            overflow: hidden;
            margin-bottom: var(--space-md);
            aspect-ratio: 16 / 10;
            background: #1a1f28;
        }
        .card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .card:hover .card-image img {
            transform: scale(1.04);
        }

        /* ============ DATA STRIP ============ */
        .data-strip {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--space-lg);
            text-align: center;
        }
        .data-item {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: var(--space-lg) var(--space-md);
            transition: border-color var(--transition-base), box-shadow var(--transition-base);
        }
        .data-item:hover {
            border-color: var(--color-border-accent);
            box-shadow: var(--shadow-glow);
        }
        .data-value {
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--color-accent);
            font-family: var(--font-mono);
            letter-spacing: 0.02em;
        }
        .data-label {
            font-size: 0.88rem;
            color: var(--color-text-weak);
            margin-top: 4px;
        }
        .data-change {
            font-size: 0.82rem;
            font-weight: 500;
            display: inline-block;
            padding: 2px 8px;
            border-radius: 10px;
            margin-top: 6px;
        }
        .data-change.up {
            color: #5cdb8b;
            background: rgba(92, 219, 139, 0.08);
        }
        .data-change.down {
            color: #f07b6e;
            background: rgba(240, 123, 110, 0.08);
        }

        /* ============ ARTICLE LIST ============ */
        .article-list {
            display: flex;
            flex-direction: column;
            gap: var(--space-md);
        }
        .article-item {
            display: flex;
            gap: var(--space-lg);
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: var(--space-md);
            transition: border-color var(--transition-base), box-shadow var(--transition-base), transform var(--transition-base);
            align-items: center;
        }
        .article-item:hover {
            border-color: var(--color-border-accent);
            box-shadow: var(--shadow-card-hover);
            transform: translateX(3px);
        }
        .article-thumb {
            width: 140px;
            height: 100px;
            border-radius: var(--radius-md);
            overflow: hidden;
            flex-shrink: 0;
            background: #1a1f28;
        }
        .article-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .article-item:hover .article-thumb img {
            transform: scale(1.05);
        }
        .article-info {
            flex: 1;
            min-width: 0;
        }
        .article-info h4 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--color-text-strong);
            margin-bottom: 4px;
        }
        .article-info p {
            font-size: 0.85rem;
            color: var(--color-text-weak);
            line-height: 1.5;
        }
        .article-meta {
            font-size: 0.78rem;
            color: var(--color-text-muted);
            margin-top: 4px;
        }

        /* ============ FAQ ============ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: var(--space-sm);
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: border-color var(--transition-fast);
        }
        .faq-item:hover {
            border-color: var(--color-border-light);
        }
        .faq-question {
            width: 100%;
            background: none;
            color: var(--color-text-strong);
            padding: var(--space-md) var(--space-lg);
            text-align: left;
            font-weight: 600;
            font-size: 0.98rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: var(--space-md);
            cursor: pointer;
            transition: color var(--transition-fast);
            letter-spacing: 0.02em;
        }
        .faq-question:hover {
            color: var(--color-accent);
        }
        .faq-icon {
            flex-shrink: 0;
            width: 22px;
            height: 22px;
            border-radius: var(--radius-full);
            border: 1.5px solid var(--color-text-muted);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.7rem;
            transition: border-color var(--transition-fast), transform var(--transition-fast), background var(--transition-fast);
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            border-color: var(--color-accent);
            background: var(--color-accent-subtle);
            color: var(--color-accent);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-slow);
            padding: 0 var(--space-lg);
            font-size: 0.9rem;
            color: var(--color-text-weak);
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding-bottom: var(--space-md);
        }

        /* ============ CTA SECTION ============ */
        .cta-section {
            background: var(--color-bg-elevated);
            border-top: 1px solid var(--color-border);
            padding: var(--space-2xl) 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            left: 50%;
            transform: translateX(-50%);
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(201, 160, 80, 0.07) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-section h2 {
            font-size: 2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: var(--space-sm);
            position: relative;
            z-index: 1;
        }
        .cta-section p {
            color: var(--color-text-weak);
            font-size: 1rem;
            margin-bottom: var(--space-lg);
            position: relative;
            z-index: 1;
        }
        .btn-primary {
            display: inline-block;
            padding: 13px 32px;
            border-radius: var(--radius-md);
            background: var(--color-accent);
            color: #0d1117;
            font-weight: 600;
            font-size: 1rem;
            letter-spacing: 0.03em;
            transition: background var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
            position: relative;
            z-index: 1;
            cursor: pointer;
            border: none;
        }
        .btn-primary:hover {
            background: var(--color-accent-light);
            transform: translateY(-2px);
            box-shadow: 0 6px 24px var(--color-accent-glow);
        }
        .btn-outline {
            display: inline-block;
            padding: 12px 28px;
            border-radius: var(--radius-md);
            background: transparent;
            color: var(--color-accent);
            border: 1.5px solid var(--color-accent);
            font-weight: 500;
            font-size: 0.95rem;
            letter-spacing: 0.03em;
            transition: background var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
            position: relative;
            z-index: 1;
            cursor: pointer;
        }
        .btn-outline:hover {
            background: var(--color-accent);
            color: #0d1117;
            transform: translateY(-2px);
        }

        /* ============ FOOTER ============ */
        .site-footer {
            background: var(--color-primary);
            border-top: 1px solid var(--color-border);
            padding: var(--space-2xl) 0 var(--space-lg);
            color: var(--color-text-weak);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
            gap: var(--space-xl);
            margin-bottom: var(--space-xl);
        }
        .footer-brand {
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: var(--space-sm);
            letter-spacing: 0.03em;
        }
        .footer-disclaimer {
            font-size: 0.78rem;
            color: var(--color-text-muted);
            margin-top: var(--space-sm);
            line-height: 1.5;
        }
        .footer-col h4 {
            font-size: 0.95rem;
            color: #fff;
            margin-bottom: var(--space-sm);
            letter-spacing: 0.03em;
        }
        .footer-col a {
            display: block;
            font-size: 0.85rem;
            color: var(--color-text-weak);
            padding: 4px 0;
            transition: color var(--transition-fast);
        }
        .footer-col a:hover {
            color: var(--color-accent);
        }
        .footer-bottom {
            text-align: center;
            padding-top: var(--space-md);
            border-top: 1px solid var(--color-border);
            font-size: 0.82rem;
            color: var(--color-text-muted);
            letter-spacing: 0.02em;
        }

        /* ============ RESPONSIVE ============ */
        @media (max-width: 1024px) {
            .data-strip {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: var(--space-lg);
            }
            .page-banner h1 {
                font-size: 2rem;
            }
        }
        @media (max-width: 768px) {
            .nav-menu {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: rgba(13, 17, 23, 0.97);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                flex-direction: column;
                align-items: stretch;
                padding: var(--space-md);
                gap: 4px;
                border-bottom: 1px solid var(--color-border);
                transform: translateY(-120%);
                opacity: 0;
                transition: transform var(--transition-base), opacity var(--transition-base);
                z-index: 99;
                box-shadow: var(--shadow-lg);
            }
            .nav-menu.open {
                transform: translateY(0);
                opacity: 1;
            }
            .nav-menu a {
                padding: 12px 16px;
                border-radius: var(--radius-md);
                font-size: 0.95rem;
            }
            .mobile-toggle {
                display: block;
            }
            .data-strip {
                grid-template-columns: 1fr 1fr;
                gap: var(--space-md);
            }
            .cards-grid {
                grid-template-columns: 1fr;
            }
            .article-item {
                flex-direction: column;
                align-items: stretch;
            }
            .article-thumb {
                width: 100%;
                height: 160px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: var(--space-lg);
            }
            .page-banner h1 {
                font-size: 1.6rem;
            }
            .page-banner {
                min-height: 240px;
                padding: var(--space-2xl) 0 var(--space-xl);
            }
            .section-header h2 {
                font-size: 1.5rem;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
        }
        @media (max-width: 520px) {
            .data-strip {
                grid-template-columns: 1fr 1fr;
                gap: var(--space-sm);
            }
            .data-value {
                font-size: 1.5rem;
            }
            .page-banner h1 {
                font-size: 1.35rem;
            }
            .banner-badge {
                font-size: 0.75rem;
            }
            .card {
                padding: var(--space-md);
            }
            .section {
                padding: var(--space-xl) 0;
            }
            .nav-cta {
                padding: 10px 16px !important;
            }
        }

/* roulang page: category5 */
:root {
            --color-bg: #0d0f15;
            --color-surface: #161a24;
            --color-card: #1c2030;
            --color-card-hover: #222840;
            --color-primary: #c8963e;
            --color-primary-light: #ddb05f;
            --color-primary-dark: #a67a2e;
            --color-accent: #e8c97a;
            --color-text: #e8e6e3;
            --color-text-strong: #ffffff;
            --color-text-weak: #9a9ba5;
            --color-text-muted: #6b6d78;
            --color-border: #2a2d3a;
            --color-border-light: #353849;
            --color-success: #3cb878;
            --color-warning: #e0a940;
            --color-danger: #d94a4a;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 14px;
            --radius-xl: 18px;
            --shadow-sm: 0 2px 6px rgba(0, 0, 0, 0.25);
            --shadow-md: 0 6px 22px rgba(0, 0, 0, 0.35);
            --shadow-lg: 0 14px 40px rgba(0, 0, 0, 0.45);
            --shadow-card: 0 4px 16px rgba(0, 0, 0, 0.3);
            --shadow-glow: 0 0 32px rgba(200, 150, 62, 0.10);
            --space-xs: 6px;
            --space-sm: 12px;
            --space-md: 20px;
            --space-lg: 32px;
            --space-xl: 48px;
            --space-2xl: 64px;
            --space-3xl: 80px;
            --font-sans: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --font-mono: 'SF Mono', 'Cascadia Code', 'Consolas', monospace;
            --transition-fast: 0.15s ease;
            --transition-smooth: 0.28s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-bounce: 0.4s cubic-bezier(0.22, 0.61, 0.36, 1);
            --max-width: 1200px;
            --nav-height: 68px;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            font-size: 16px;
        }

        body {
            font-family: var(--font-sans);
            background-color: var(--color-bg);
            color: var(--color-text);
            line-height: 1.65;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            letter-spacing: 0.01em;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-fast);
        }
        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            background: none;
            outline: none;
        }
        input {
            font-family: inherit;
            outline: none;
        }

        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 var(--space-lg);
        }

        /* ===== HEADER & NAV ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(13, 15, 21, 0.88);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--color-border);
            transition: background var(--transition-smooth);
            height: var(--nav-height);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--nav-height);
            gap: var(--space-lg);
        }
        .nav-logo {
            font-size: 1.2rem;
            font-weight: 700;
            letter-spacing: 0.03em;
            color: var(--color-text-strong);
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
            flex-shrink: 0;
            transition: color var(--transition-fast);
        }
        .nav-logo:hover {
            color: var(--color-primary-light);
        }
        .nav-logo .logo-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--color-primary);
            box-shadow: 0 0 10px var(--color-primary);
            flex-shrink: 0;
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 4px;
            flex-wrap: wrap;
        }
        .nav-menu a {
            display: inline-flex;
            align-items: center;
            padding: 8px 15px;
            font-size: 0.9rem;
            font-weight: 500;
            border-radius: var(--radius-sm);
            color: var(--color-text-weak);
            transition: all var(--transition-smooth);
            white-space: nowrap;
            letter-spacing: 0.02em;
        }
        .nav-menu a:hover {
            color: var(--color-text-strong);
            background: rgba(255, 255, 255, 0.04);
        }
        .nav-menu a.active {
            color: var(--color-primary-light);
            background: rgba(200, 150, 62, 0.08);
            font-weight: 600;
        }
        .nav-cta {
            background: var(--color-primary) !important;
            color: #fff !important;
            font-weight: 600 !important;
            padding: 9px 20px !important;
            border-radius: 24px !important;
            transition: all var(--transition-smooth) !important;
            letter-spacing: 0.03em !important;
            box-shadow: 0 2px 12px rgba(200, 150, 62, 0.3);
        }
        .nav-cta:hover {
            background: var(--color-primary-light) !important;
            box-shadow: 0 4px 20px rgba(200, 150, 62, 0.45) !important;
            transform: translateY(-1px);
        }
        .mobile-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            width: 28px;
            cursor: pointer;
            background: none;
            border: none;
            padding: 4px;
            z-index: 1001;
        }
        .mobile-toggle span {
            display: block;
            height: 2px;
            background: var(--color-text);
            border-radius: 2px;
            transition: all var(--transition-smooth);
            transform-origin: center;
        }
        .mobile-toggle.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .mobile-toggle.active span:nth-child(2) {
            opacity: 0;
        }
        .mobile-toggle.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* ===== PAGE BANNER ===== */
        .page-banner {
            position: relative;
            padding: var(--space-3xl) 0 var(--space-2xl);
            background: linear-gradient(160deg, #11141e 0%, #0d0f15 40%, #151928 100%);
            overflow: hidden;
            border-bottom: 1px solid var(--color-border);
        }
        .page-banner::before {
            content: '';
            position: absolute;
            top: -120px;
            right: -180px;
            width: 600px;
            height: 600px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(200, 150, 62, 0.06) 0%, transparent 70%);
            pointer-events: none;
        }
        .page-banner::after {
            content: '';
            position: absolute;
            bottom: -60px;
            left: -100px;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(200, 150, 62, 0.04) 0%, transparent 70%);
            pointer-events: none;
        }
        .banner-content {
            position: relative;
            z-index: 1;
            display: flex;
            align-items: center;
            gap: var(--space-2xl);
            flex-wrap: wrap;
        }
        .banner-text {
            flex: 1 1 420px;
            min-width: 280px;
        }
        .banner-badge {
            display: inline-block;
            font-size: 0.78rem;
            font-weight: 600;
            letter-spacing: 0.05em;
            color: var(--color-primary-light);
            background: rgba(200, 150, 62, 0.1);
            padding: 5px 14px;
            border-radius: 20px;
            margin-bottom: var(--space-md);
            border: 1px solid rgba(200, 150, 62, 0.2);
        }
        .banner-text h1 {
            font-size: 2.5rem;
            font-weight: 700;
            color: var(--color-text-strong);
            letter-spacing: 0.02em;
            line-height: 1.25;
            margin-bottom: var(--space-sm);
        }
        .banner-text h1 span {
            color: var(--color-primary-light);
        }
        .banner-text .banner-desc {
            font-size: 1.05rem;
            color: var(--color-text-weak);
            line-height: 1.7;
            max-width: 520px;
        }
        .banner-visual {
            flex: 0 0 380px;
            min-width: 260px;
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            border: 1px solid var(--color-border-light);
            aspect-ratio: 16 / 10;
            background: var(--color-card);
        }
        .banner-visual img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            display: block;
        }
        .banner-visual::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 55%, rgba(13, 15, 21, 0.7) 100%);
            pointer-events: none;
        }

        /* ===== SECTION COMMON ===== */
        .section {
            padding: var(--space-2xl) 0;
        }
        .section-label {
            font-size: 0.78rem;
            font-weight: 600;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            color: var(--color-primary-light);
            margin-bottom: var(--space-xs);
            display: block;
        }
        .section-title {
            font-size: 1.75rem;
            font-weight: 700;
            color: var(--color-text-strong);
            letter-spacing: 0.02em;
            margin-bottom: var(--space-sm);
            line-height: 1.3;
        }
        .section-desc {
            font-size: 0.95rem;
            color: var(--color-text-weak);
            max-width: 600px;
            line-height: 1.7;
            margin-bottom: var(--space-lg);
        }
        .section-header {
            margin-bottom: var(--space-lg);
        }

        /* ===== TOOLS GRID ===== */
        .tools-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--space-lg);
        }
        .tool-card {
            background: var(--color-card);
            border-radius: var(--radius-lg);
            padding: var(--space-lg);
            border: 1px solid var(--color-border);
            transition: all var(--transition-smooth);
            display: flex;
            flex-direction: column;
            gap: var(--space-sm);
            position: relative;
            overflow: hidden;
        }
        .tool-card:hover {
            border-color: var(--color-border-light);
            box-shadow: var(--shadow-md), var(--shadow-glow);
            transform: translateY(-3px);
            background: var(--color-card-hover);
        }
        .tool-card .tool-icon {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            color: #fff;
            flex-shrink: 0;
            background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary));
        }
        .tool-card h3 {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--color-text-strong);
            letter-spacing: 0.02em;
        }
        .tool-card p {
            font-size: 0.88rem;
            color: var(--color-text-weak);
            line-height: 1.6;
            flex: 1;
        }
        .tool-card .tool-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            margin-top: auto;
        }
        .tool-tag {
            font-size: 0.73rem;
            padding: 4px 10px;
            border-radius: 14px;
            background: rgba(200, 150, 62, 0.08);
            color: var(--color-primary-light);
            border: 1px solid rgba(200, 150, 62, 0.18);
            letter-spacing: 0.03em;
        }
        .tool-card .tool-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--color-primary-light);
            margin-top: var(--space-xs);
            transition: gap var(--transition-fast);
        }
        .tool-card .tool-link:hover {
            gap: 10px;
            color: var(--color-accent);
        }

        /* ===== DATA DASHBOARD ===== */
        .dashboard-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--space-md);
        }
        .stat-card {
            background: var(--color-card);
            border-radius: var(--radius-md);
            padding: var(--space-lg);
            border: 1px solid var(--color-border);
            text-align: center;
            transition: all var(--transition-smooth);
        }
        .stat-card:hover {
            border-color: var(--color-border-light);
            box-shadow: var(--shadow-md);
            background: var(--color-card-hover);
        }
        .stat-card .stat-value {
            font-size: 2rem;
            font-weight: 700;
            color: var(--color-text-strong);
            letter-spacing: 0.02em;
            font-family: var(--font-mono);
        }
        .stat-card .stat-value.highlight {
            color: var(--color-primary-light);
        }
        .stat-card .stat-label {
            font-size: 0.82rem;
            color: var(--color-text-muted);
            margin-top: 4px;
            letter-spacing: 0.03em;
        }
        .stat-card .stat-change {
            font-size: 0.75rem;
            font-weight: 600;
            margin-top: 6px;
            display: inline-flex;
            align-items: center;
            gap: 3px;
        }
        .stat-change.up {
            color: var(--color-success);
        }
        .stat-change.down {
            color: var(--color-danger);
        }

        /* ===== LIVE DATA PREVIEW ===== */
        .live-preview {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border);
            overflow: hidden;
        }
        .live-preview-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: var(--space-md) var(--space-lg);
            border-bottom: 1px solid var(--color-border);
            flex-wrap: wrap;
            gap: var(--space-sm);
        }
        .live-preview-header h3 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-text-strong);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .live-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--color-success);
            box-shadow: 0 0 8px var(--color-success);
            animation: pulse-dot 1.8s infinite;
        }
        @keyframes pulse-dot {
            0%,
            100% {
                box-shadow: 0 0 6px var(--color-success);
            }
            50% {
                box-shadow: 0 0 18px var(--color-success), 0 0 28px rgba(60, 184, 120, 0.5);
            }
        }
        .live-table-wrap {
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
        }
        .live-table {
            width: 100%;
            border-collapse: collapse;
            min-width: 700px;
        }
        .live-table th,
        .live-table td {
            padding: 14px 16px;
            text-align: left;
            font-size: 0.85rem;
            border-bottom: 1px solid var(--color-border);
            white-space: nowrap;
        }
        .live-table th {
            font-weight: 600;
            color: var(--color-text-muted);
            letter-spacing: 0.03em;
            font-size: 0.78rem;
            text-transform: uppercase;
            background: rgba(0, 0, 0, 0.2);
        }
        .live-table td {
            color: var(--color-text);
        }
        .live-table .val-high {
            color: var(--color-primary-light);
            font-weight: 600;
        }
        .live-table .val-up {
            color: var(--color-success);
        }
        .live-table .val-down {
            color: var(--color-danger);
        }
        .live-table tbody tr {
            transition: background var(--transition-fast);
        }
        .live-table tbody tr:hover {
            background: rgba(255, 255, 255, 0.02);
        }

        /* ===== GUIDE STEPS ===== */
        .steps-list {
            display: flex;
            flex-direction: column;
            gap: var(--space-md);
            counter-reset: step-counter;
        }
        .step-item {
            display: flex;
            gap: var(--space-lg);
            align-items: flex-start;
            background: var(--color-card);
            border-radius: var(--radius-md);
            padding: var(--space-lg);
            border: 1px solid var(--color-border);
            transition: all var(--transition-smooth);
            counter-increment: step-counter;
        }
        .step-item:hover {
            border-color: var(--color-border-light);
            box-shadow: var(--shadow-sm);
        }
        .step-num {
            flex-shrink: 0;
            width: 42px;
            height: 42px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary));
            color: #fff;
            font-weight: 700;
            font-size: 1rem;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .step-body h4 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-text-strong);
            margin-bottom: 4px;
        }
        .step-body p {
            font-size: 0.85rem;
            color: var(--color-text-weak);
            line-height: 1.6;
        }

        /* ===== FAQ ===== */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: var(--space-sm);
        }
        .faq-item {
            background: var(--color-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border);
            overflow: hidden;
            transition: all var(--transition-smooth);
        }
        .faq-item:hover {
            border-color: var(--color-border-light);
        }
        .faq-question {
            width: 100%;
            text-align: left;
            padding: 16px 20px;
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--color-text-strong);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: var(--space-sm);
            background: none;
            border: none;
            transition: color var(--transition-fast);
            letter-spacing: 0.02em;
        }
        .faq-question:hover {
            color: var(--color-primary-light);
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            font-size: 0.7rem;
            transition: transform var(--transition-smooth);
            color: var(--color-text-muted);
            width: 22px;
            height: 22px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.04);
        }
        .faq-item.open .faq-icon {
            transform: rotate(180deg);
            background: rgba(200, 150, 62, 0.15);
            color: var(--color-primary-light);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 20px;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 20px 16px;
        }
        .faq-answer p {
            font-size: 0.85rem;
            color: var(--color-text-weak);
            line-height: 1.7;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(145deg, #141826 0%, #1a1f30 40%, #11141e 100%);
            border-top: 1px solid var(--color-border);
            border-bottom: 1px solid var(--color-border);
            padding: var(--space-3xl) 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -80px;
            left: 50%;
            transform: translateX(-50%);
            width: 500px;
            height: 500px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(200, 150, 62, 0.07) 0%, transparent 70%);
            pointer-events: none;
        }
        .cta-inner {
            position: relative;
            z-index: 1;
        }
        .cta-section h2 {
            font-size: 2rem;
            font-weight: 700;
            color: var(--color-text-strong);
            letter-spacing: 0.02em;
            margin-bottom: var(--space-sm);
        }
        .cta-section p {
            font-size: 1rem;
            color: var(--color-text-weak);
            max-width: 500px;
            margin: 0 auto var(--space-lg);
            line-height: 1.7;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 32px;
            background: var(--color-primary);
            color: #fff;
            font-weight: 600;
            font-size: 1rem;
            border-radius: 28px;
            letter-spacing: 0.03em;
            transition: all var(--transition-smooth);
            box-shadow: 0 4px 20px rgba(200, 150, 62, 0.35);
            border: none;
            cursor: pointer;
        }
        .btn-primary:hover {
            background: var(--color-primary-light);
            box-shadow: 0 6px 28px rgba(200, 150, 62, 0.5);
            transform: translateY(-2px);
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            background: transparent;
            color: var(--color-text-strong);
            font-weight: 500;
            font-size: 0.95rem;
            border-radius: 28px;
            letter-spacing: 0.03em;
            border: 1.5px solid var(--color-border-light);
            transition: all var(--transition-smooth);
            cursor: pointer;
        }
        .btn-outline:hover {
            border-color: var(--color-primary);
            color: var(--color-primary-light);
            background: rgba(200, 150, 62, 0.05);
        }

        /* ===== FOOTER ===== */
        .site-footer {
            background: #0a0c12;
            border-top: 1px solid var(--color-border);
            padding: var(--space-2xl) 0 var(--space-lg);
            margin-top: auto;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: var(--space-xl);
            margin-bottom: var(--space-xl);
        }
        .footer-col h4 {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--color-text-strong);
            letter-spacing: 0.04em;
            margin-bottom: var(--space-md);
            text-transform: uppercase;
        }
        .footer-brand {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--color-text-strong);
            letter-spacing: 0.03em;
            margin-bottom: var(--space-sm);
        }
        .footer-col a {
            display: block;
            font-size: 0.85rem;
            color: var(--color-text-weak);
            padding: 5px 0;
            transition: color var(--transition-fast);
            letter-spacing: 0.02em;
        }
        .footer-col a:hover {
            color: var(--color-primary-light);
        }
        .footer-disclaimer {
            font-size: 0.78rem !important;
            color: rgba(255, 255, 255, 0.35) !important;
            line-height: 1.6;
            margin-top: var(--space-sm);
        }
        .footer-bottom {
            text-align: center;
            padding-top: var(--space-lg);
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            font-size: 0.78rem;
            color: rgba(255, 255, 255, 0.3);
            letter-spacing: 0.03em;
        }

        /* ===== RESPONSIVE ===== */
        @media (max-width: 1024px) {
            .tools-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .dashboard-row {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: var(--space-lg);
            }
            .banner-visual {
                flex: 0 0 300px;
            }
            .banner-text h1 {
                font-size: 2rem;
            }
        }
        @media (max-width: 768px) {
            .mobile-toggle {
                display: flex;
            }
            .nav-menu {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: rgba(13, 15, 21, 0.96);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                flex-direction: column;
                align-items: stretch;
                padding: var(--space-md);
                gap: 2px;
                border-bottom: 1px solid var(--color-border);
                transform: translateY(-120%);
                opacity: 0;
                transition: all var(--transition-smooth);
                pointer-events: none;
                z-index: 999;
            }
            .nav-menu.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav-menu a {
                padding: 12px 16px;
                border-radius: var(--radius-sm);
                font-size: 0.95rem;
            }
            .nav-cta {
                margin-top: 6px;
                text-align: center;
                justify-content: center;
            }
            .tools-grid {
                grid-template-columns: 1fr;
            }
            .dashboard-row {
                grid-template-columns: 1fr 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: var(--space-lg);
            }
            .banner-content {
                flex-direction: column-reverse;
                gap: var(--space-lg);
            }
            .banner-visual {
                flex: 0 0 auto;
                width: 100%;
                max-width: 420px;
            }
            .banner-text h1 {
                font-size: 1.6rem;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .container {
                padding: 0 var(--space-md);
            }
            .step-item {
                flex-direction: column;
                gap: var(--space-sm);
            }
        }
        @media (max-width: 520px) {
            .dashboard-row {
                grid-template-columns: 1fr;
            }
            .banner-text h1 {
                font-size: 1.35rem;
            }
            .banner-visual {
                max-width: 100%;
            }
            .live-table {
                min-width: 550px;
                font-size: 0.75rem;
            }
            .live-table th,
            .live-table td {
                padding: 10px 10px;
                font-size: 0.73rem;
            }
            .stat-card .stat-value {
                font-size: 1.5rem;
            }
            .btn-primary,
            .btn-outline {
                padding: 10px 22px;
                font-size: 0.88rem;
            }
        }