/* roulang page: index */
:root {
            --primary-color: #007bff;
            --secondary-color: #6c757d;
            --accent-color: #ffc107;
            --background-color: #f8f9fa;
            --text-color: #212529;
            --light-text-color: #6c757d;
            --border-color: #dee2e6;
            --card-background: #ffffff;
            --shadow-color: rgba(0, 0, 0, 0.1);
            --radius-medium: 0.375rem;
            --spacing-unit: 1rem;
            --container-max-width: 1200px;
        }

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            line-height: 1.7;
            color: var(--text-color);
            background-color: var(--background-color);
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }

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

        a {
            color: var(--primary-color);
            text-decoration: none;
            transition: color 0.2s ease-in-out;
        }

        a:hover,
        a:focus {
            color: #0056b3;
            text-decoration: underline;
        }

        .container {
            width: 90%;
            max-width: var(--container-max-width);
            margin: 0 auto;
        }

        /* Header & Navigation */
        header {
            background-color: var(--card-background);
            box-shadow: 0 2px 4px var(--shadow-color);
            padding: var(--spacing-unit) 0;
            position: sticky;
            top: 0;
            z-index: 1000;
        }

        nav {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .logo {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--primary-color);
            text-decoration: none;
        }
        .logo:hover {
            text-decoration: none;
        }

        .nav-links {
            list-style: none;
            display: flex;
            gap: var(--spacing-unit) * 1.5;
        }

        .nav-links a {
            color: var(--text-color);
            font-weight: 500;
            padding: calc(var(--spacing-unit) / 2) var(--spacing-unit);
            border-radius: var(--radius-medium);
            transition: background-color 0.2s ease-in-out, color 0.2s ease-in-out;
        }

        .nav-links a:hover,
        .nav-links a:focus {
            background-color: var(--primary-color);
            color: var(--card-background);
            text-decoration: none;
        }

        .nav-links .active {
            background-color: var(--primary-color);
            color: var(--card-background);
        }

        /* Mobile Navigation (Hamburger Menu) */
        .hamburger {
            display: none;
            cursor: pointer;
            font-size: 1.8rem;
            color: var(--text-color);
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px; /* Adjust based on header height */
                left: 0;
                width: 100%;
                background-color: var(--card-background);
                box-shadow: 0 4px 8px var(--shadow-color);
                padding: var(--spacing-unit) 0;
                z-index: 999;
            }
            .nav-links.active {
                display: flex;
            }
            .nav-links li {
                text-align: center;
                width: 100%;
            }
            .hamburger {
                display: block;
            }
        }


        /* Hero Section */
        .hero {
            background-image: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)), url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            color: var(--card-background);
            text-align: center;
            padding: var(--spacing-unit) * 5 0;
            margin-bottom: var(--spacing-unit) * 3;
        }

        .hero h1 {
            font-size: 3rem;
            margin-bottom: var(--spacing-unit);
            line-height: 1.2;
        }

        .hero p {
            font-size: 1.2rem;
            margin-bottom: var(--spacing-unit) * 2;
            color: rgba(255, 255, 255, 0.9);
        }

        .btn {
            display: inline-block;
            background-color: var(--accent-color);
            color: var(--text-color);
            padding: calc(var(--spacing-unit) * 0.8) calc(var(--spacing-unit) * 1.8);
            border-radius: var(--radius-medium);
            font-size: 1.1rem;
            font-weight: 600;
            transition: background-color 0.2s ease-in-out, transform 0.2s ease-in-out, box-shadow 0.2s ease-in-out;
            border: none;
            cursor: pointer;
        }

        .btn:hover,
        .btn:focus {
            background-color: #e0a800;
            color: var(--text-color);
            text-decoration: none;
            transform: translateY(-2px);
            box-shadow: 0 4px 8px var(--shadow-color);
        }

        /* Section Styling */
        .section {
            padding: var(--spacing-unit) * 3 0;
            margin-bottom: var(--spacing-unit) * 2;
        }

        .section h2 {
            text-align: center;
            font-size: 2.5rem;
            margin-bottom: var(--spacing-unit) * 2;
            color: var(--text-color);
        }

        /* Content Cards */
        .cards-container {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: var(--spacing-unit) * 2;
        }

        .card {
            background-color: var(--card-background);
            border-radius: var(--radius-medium);
            box-shadow: 0 4px 12px var(--shadow-color);
            overflow: hidden;
            transition: transform 0.2s ease-in-out, box-shadow 0.2s ease-in-out;
            display: flex;
            flex-direction: column;
        }

        .card:hover {
            transform: translateY(-5px);
            box-shadow: 0 8px 16px var(--shadow-color);
        }

        .card-image {
            position: relative;
            width: 100%;
            height: 200px; /* Fixed height for consistency */
            overflow: hidden;
        }

        .card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .card-content {
            padding: var(--spacing-unit) * 1.5;
            flex-grow: 1;
            display: flex;
            flex-direction: column;
        }

        .card-content h3 {
            font-size: 1.4rem;
            margin-bottom: var(--spacing-unit) * 0.8;
            color: var(--text-color);
        }

        .card-content p {
            font-size: 0.95rem;
            color: var(--light-text-color);
            margin-bottom: var(--spacing-unit);
            flex-grow: 1;
        }

        .card-footer {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-top: auto; /* Pushes footer to the bottom */
            padding-top: var(--spacing-unit);
            border-top: 1px solid var(--border-color);
        }

        .card-meta {
            font-size: 0.85rem;
            color: var(--light-text-color);
        }

        .card-btn {
            display: inline-block;
            background-color: var(--primary-color);
            color: var(--card-background);
            padding: calc(var(--spacing-unit) / 2) var(--spacing-unit);
            border-radius: var(--radius-medium);
            font-size: 0.9rem;
            font-weight: 500;
            transition: background-color 0.2s ease-in-out, transform 0.2s ease-in-out;
        }

        .card-btn:hover,
        .card-btn:focus {
            background-color: #0056b3;
            color: var(--card-background);
            text-decoration: none;
            transform: translateY(-1px);
        }

        /* Category Links Section */
        .category-links {
            background-color: var(--card-background);
            padding: var(--spacing-unit) * 3 0;
            margin-bottom: var(--spacing-unit) * 2;
        }

        .category-links h2 {
            margin-bottom: var(--spacing-unit) * 2;
        }

        .category-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
            gap: var(--spacing-unit) * 1.5;
        }

        .category-item {
            text-align: center;
            background-color: var(--background-color);
            padding: var(--spacing-unit) * 1.5;
            border-radius: var(--radius-medium);
            transition: background-color 0.2s ease-in-out, transform 0.2s ease-in-out, box-shadow 0.2s ease-in-out;
        }

        .category-item:hover {
            background-color: var(--card-background);
            transform: translateY(-3px);
            box-shadow: 0 4px 10px var(--shadow-color);
        }

        .category-item a {
            color: var(--text-color);
            font-size: 1.2rem;
            font-weight: 600;
            display: block;
        }

        .category-item a:hover {
            text-decoration: none;
            color: var(--primary-color);
        }

        /* FAQ Section */
        .faq-section {
            background-color: var(--card-background);
            padding: var(--spacing-unit) * 3 0;
            margin-bottom: var(--spacing-unit) * 2;
        }

        .faq-item {
            margin-bottom: var(--spacing-unit);
            border-bottom: 1px solid var(--border-color);
            padding-bottom: var(--spacing-unit);
        }

        .faq-item:last-child {
            border-bottom: none;
            padding-bottom: 0;
            margin-bottom: 0;
        }

        .faq-question {
            font-size: 1.2rem;
            font-weight: 600;
            color: var(--text-color);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: color 0.2s ease-in-out;
        }

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

        .faq-question::after {
            content: '+';
            font-size: 1.5rem;
            transition: transform 0.2s ease-in-out;
        }

        .faq-item.open .faq-question::after {
            transform: rotate(45deg);
        }

        .faq-answer {
            font-size: 0.95rem;
            color: var(--light-text-color);
            margin-top: var(--spacing-unit) * 0.8;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-in-out, opacity 0.3s ease-in-out;
            opacity: 0;
        }

        .faq-item.open .faq-answer {
            max-height: 200px; /* Adjust as needed */
            opacity: 1;
        }

        /* CTA Section */
        .cta-section {
            background-color: var(--primary-color);
            color: var(--card-background);
            text-align: center;
            padding: var(--spacing-unit) * 4 0;
            margin-bottom: var(--spacing-unit) * 2;
        }

        .cta-section h2 {
            font-size: 2.2rem;
            margin-bottom: var(--spacing-unit);
            color: var(--card-background);
        }

        .cta-section p {
            font-size: 1.1rem;
            margin-bottom: var(--spacing-unit) * 2;
            opacity: 0.9;
        }

        .cta-section .btn {
            background-color: var(--accent-color);
            color: var(--text-color);
            font-size: 1.2rem;
        }

        .cta-section .btn:hover,
        .cta-section .btn:focus {
            background-color: #e0a800;
        }

        /* Footer */
        footer {
            background-color: var(--text-color);
            color: rgba(255, 255, 255, 0.7);
            padding: var(--spacing-unit) * 3 0;
            text-align: center;
            margin-top: auto; /* Pushes footer to the bottom */
        }

        .footer-nav ul {
            list-style: none;
            display: flex;
            justify-content: center;
            gap: var(--spacing-unit) * 1.5;
            margin-bottom: var(--spacing-unit) * 1.5;
        }

        .footer-nav a {
            color: rgba(255, 255, 255, 0.7);
            font-weight: 500;
        }

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

        .copyright {
            font-size: 0.9rem;
        }

        .footer-logo {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--accent-color);
            text-decoration: none;
            margin-bottom: var(--spacing-unit);
        }
        .footer-logo:hover {
            text-decoration: none;
        }

/* roulang page: article */
:root {
            --primary-color: #e53637;
            --secondary-color: #f5a623;
            --background-color: #f8f9fa;
            --text-color: #333;
            --weak-text-color: #666;
            --border-color: #ddd;
            --card-bg: #fff;
            --radius-sm: 4px;
            --radius-md: 8px;
            --radius-lg: 12px;
            --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.1);
            --container-width: 1200px;
            --spacing-xs: 8px;
            --spacing-sm: 16px;
            --spacing-md: 24px;
            --spacing-lg: 32px;
            --spacing-xl: 48px;
            --font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
        }

        body {
            margin: 0;
            padding: 0;
            font-family: var(--font-family);
            background-color: var(--background-color);
            color: var(--text-color);
            line-height: 1.6;
            overflow-x: hidden;
        }

        a {
            color: var(--primary-color);
            text-decoration: none;
            transition: color 0.3s ease;
        }

        a:hover,
        a:focus {
            color: var(--secondary-color);
        }

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

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

        header {
            background-color: var(--card-bg);
            box-shadow: var(--shadow-md);
            padding: var(--spacing-sm) 0;
        }

        header .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .logo {
            font-size: 1.8em;
            font-weight: bold;
            color: var(--primary-color);
        }

        .main-nav ul {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
        }

        .main-nav li {
            margin-left: var(--spacing-lg);
        }

        .main-nav a {
            font-weight: bold;
            padding: var(--spacing-sm) 0;
            position: relative;
            color: var(--text-color);
        }

        .main-nav a:hover,
        .main-nav a.active {
            color: var(--primary-color);
        }

        .main-nav a.active::after,
        .main-nav a:hover::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background-color: var(--primary-color);
        }

        .hero {
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            color: #fff;
            text-align: center;
            padding: var(--spacing-xl) 0;
            position: relative;
            display: flex;
            justify-content: center;
            align-items: center;
            min-height: 400px;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0, 0, 0, 0.5);
        }

        .hero .container {
            position: relative;
            z-index: 1;
        }

        .hero h1 {
            font-size: 3em;
            margin-bottom: var(--spacing-sm);
            line-height: 1.2;
        }

        .hero p {
            font-size: 1.3em;
            margin-bottom: var(--spacing-lg);
        }

        .btn {
            display: inline-block;
            background-color: var(--secondary-color);
            color: #fff;
            padding: var(--spacing-sm) var(--spacing-lg);
            border-radius: var(--radius-md);
            font-weight: bold;
            transition: background-color 0.3s ease, transform 0.3s ease;
            border: none;
            cursor: pointer;
        }

        .btn:hover,
        .btn:focus {
            background-color: #d98e1e;
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

        .section {
            padding: var(--spacing-xl) 0;
        }

        .section-title {
            text-align: center;
            font-size: 2.5em;
            margin-bottom: var(--spacing-lg);
            color: var(--primary-color);
        }

        .content-area {
            background-color: var(--card-bg);
            padding: var(--spacing-xl);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
        }

        .content-area h2 {
            font-size: 2em;
            margin-bottom: var(--spacing-md);
            color: var(--primary-color);
        }

        .content-area p,
        .content-area ul,
        .content-area ol {
            margin-bottom: var(--spacing-md);
        }

        .content-area ul,
        .content-area ol {
            padding-left: var(--spacing-lg);
        }

        .content-area li {
            margin-bottom: var(--spacing-sm);
        }

        .content-area img {
            margin: var(--spacing-lg) auto;
            border-radius: var(--radius-md);
        }

        .content-area blockquote {
            border-left: 4px solid var(--primary-color);
            padding-left: var(--spacing-md);
            margin: var(--spacing-lg) 0;
            font-style: italic;
            color: var(--weak-text-color);
        }

        .not-found {
            text-align: center;
            padding: var(--spacing-xl) 0;
        }

        .not-found h2 {
            font-size: 2.5em;
            color: var(--primary-color);
            margin-bottom: var(--spacing-md);
        }

        .not-found p {
            font-size: 1.2em;
            margin-bottom: var(--spacing-lg);
        }

        .not-found a.btn {
            background-color: var(--primary-color);
        }

        .not-found a.btn:hover {
            background-color: #d02c2d;
        }

        footer {
            background-color: #333;
            color: #fff;
            padding: var(--spacing-xl) 0;
            margin-top: var(--spacing-xl);
        }

        footer .container {
            display: flex;
            flex-direction: column;
            align-items: center;
        }

        .footer-logo {
            font-size: 1.8em;
            font-weight: bold;
            color: #fff;
            margin-bottom: var(--spacing-md);
        }

        .footer-nav ul {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            margin-bottom: var(--spacing-md);
        }

        .footer-nav li {
            margin: 0 var(--spacing-md);
            margin-bottom: var(--spacing-sm);
        }

        .footer-nav a {
            color: #ccc;
            transition: color 0.3s ease;
        }

        .footer-nav a:hover {
            color: #fff;
        }

        .copyright {
            font-size: 0.9em;
            color: #aaa;
        }

        /* Responsive Styles */
        @media (max-width: 1024px) {
            .container {
                padding: 0 var(--spacing-md);
            }

            .hero h1 {
                font-size: 2.5em;
            }

            .hero p {
                font-size: 1.1em;
            }

            .section-title {
                font-size: 2em;
            }
        }

        @media (max-width: 768px) {
            .main-nav {
                display: none; /* Hide desktop nav for mobile */
            }

            .hero {
                min-height: 300px;
            }

            .hero h1 {
                font-size: 2em;
            }

            .footer-nav ul {
                flex-direction: column;
                align-items: center;
            }

            .footer-nav li {
                margin: 0;
                margin-bottom: var(--spacing-sm);
            }
        }

        @media (max-width: 520px) {
            .hero h1 {
                font-size: 1.8em;
            }

            .btn {
                padding: var(--spacing-sm) var(--spacing-md);
            }

            .content-area {
                padding: var(--spacing-lg);
            }

            .section-title {
                font-size: 1.8em;
            }
        }

/* roulang page: category1 */
:root {
            --primary-color: #e91e63;
            --secondary-color: #f50057;
            --background-color: #f8f9fa;
            --text-color: #333;
            --text-muted-color: #666;
            --border-color: #ddd;
            --card-bg: #fff;
            --shadow-color: rgba(0, 0, 0, 0.1);
            --radius-sm: 4px;
            --radius-md: 8px;
            --radius-lg: 12px;
            --spacing-xs: 8px;
            --spacing-sm: 12px;
            --spacing-md: 16px;
            --spacing-lg: 24px;
            --spacing-xl: 32px;
            --container-max-width: 1200px;
        }

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

        html {
            font-size: 16px;
            line-height: 1.6;
            scroll-behavior: smooth;
        }

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            color: var(--text-color);
            background-color: var(--background-color);
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }

        .container {
            width: 90%;
            max-width: var(--container-max-width);
            margin: 0 auto;
            padding: 0 var(--spacing-md);
        }

        a {
            color: var(--primary-color);
            text-decoration: none;
            transition: color 0.3s ease;
        }

        a:hover,
        a:focus {
            color: var(--secondary-color);
            text-decoration: underline;
        }

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

        h1, h2, h3, h4, h5, h6 {
            margin-bottom: var(--spacing-md);
            line-height: 1.3;
        }

        h1 { font-size: 2.5rem; }
        h2 { font-size: 2rem; }
        h3 { font-size: 1.75rem; }
        h4 { font-size: 1.5rem; }

        .btn {
            display: inline-block;
            padding: var(--spacing-sm) var(--spacing-lg);
            border: none;
            border-radius: var(--radius-md);
            background-color: var(--primary-color);
            color: #fff;
            font-weight: bold;
            cursor: pointer;
            transition: background-color 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease;
            text-decoration: none;
            text-align: center;
        }

        .btn:hover,
        .btn:focus {
            background-color: var(--secondary-color);
            transform: translateY(-2px);
            box-shadow: 0 4px 12px var(--shadow-color);
            text-decoration: none;
        }

        .btn-secondary {
            background-color: var(--secondary-color);
        }
        .btn-secondary:hover,
        .btn-secondary:focus {
            background-color: var(--primary-color);
        }

        /* Header & Navigation */
        header {
            background-color: var(--card-bg);
            box-shadow: 0 2px 8px var(--shadow-color);
            padding: var(--spacing-md) 0;
            position: sticky;
            top: 0;
            z-index: 1000;
        }

        header .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .logo {
            font-size: 1.8rem;
            font-weight: bold;
            color: var(--primary-color);
            text-decoration: none;
        }

        .logo:hover {
            color: var(--secondary-color);
            text-decoration: none;
        }

        .main-nav ul {
            list-style: none;
            display: flex;
        }

        .main-nav li {
            margin-left: var(--spacing-lg);
        }

        .main-nav a {
            font-weight: bold;
            padding: var(--spacing-sm) 0;
            position: relative;
            color: var(--text-color);
            transition: color 0.3s ease;
        }

        .main-nav a:hover,
        .main-nav a:focus {
            color: var(--primary-color);
            text-decoration: none;
        }

        .main-nav a.active {
            color: var(--primary-color);
        }

        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background-color: var(--primary-color);
        }

        /* Hero Section */
        .hero {
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            color: #fff;
            text-align: center;
            padding: var(--spacing-xl) 0;
            position: relative;
            display: flex;
            align-items: center;
            justify-content: center;
            min-height: 500px;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.5);
        }

        .hero .container {
            position: relative;
            z-index: 1;
        }

        .hero h1 {
            font-size: 3rem;
            margin-bottom: var(--spacing-md);
            text-shadow: 0 2px 8px rgba(0, 0, 0, 0.7);
        }

        .hero p {
            font-size: 1.2rem;
            max-width: 700px;
            margin: 0 auto var(--spacing-lg);
            text-shadow: 0 1px 4px rgba(0, 0, 0, 0.7);
        }

        /* Content Section */
        .content-section {
            padding: var(--spacing-xl) 0;
        }

        .content-section h2 {
            text-align: center;
            margin-bottom: var(--spacing-lg);
        }

        .content-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: var(--spacing-lg);
        }

        .content-card {
            background-color: var(--card-bg);
            border-radius: var(--radius-lg);
            box-shadow: 0 4px 16px var(--shadow-color);
            overflow: hidden;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            display: flex;
            flex-direction: column;
        }

        .content-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 8px 24px var(--shadow-color);
        }

        .content-card img {
            width: 100%;
            height: 200px; /* Fixed height for images */
            object-fit: cover;
        }

        .content-card-body {
            padding: var(--spacing-lg);
            flex-grow: 1;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .content-card h3 {
            font-size: 1.3rem;
            margin-bottom: var(--spacing-sm);
        }

        .content-card p {
            font-size: 0.95rem;
            color: var(--text-muted-color);
            margin-bottom: var(--spacing-md);
            flex-grow: 1;
        }

        .content-card .btn {
            margin-top: var(--spacing-sm);
            align-self: flex-start;
        }

        /* Feature Section */
        .feature-section {
            background-color: #fff;
            padding: var(--spacing-xl) 0;
        }

        .feature-section .container {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-xl);
            align-items: center;
        }

        .feature-section h2 {
            text-align: left;
            font-size: 2rem;
        }

        .feature-section p {
            font-size: 1.1rem;
            color: var(--text-muted-color);
            margin-bottom: var(--spacing-lg);
        }

        .feature-item {
            display: flex;
            align-items: center;
            margin-bottom: var(--spacing-lg);
        }

        .feature-item-icon {
            background-color: var(--primary-color);
            color: #fff;
            width: 50px;
            height: 50px;
            border-radius: 50%;
            display: flex;
            justify-content: center;
            align-items: center;
            font-size: 1.5rem;
            margin-right: var(--spacing-md);
            flex-shrink: 0;
        }

        .feature-item-content h4 {
            font-size: 1.2rem;
            margin-bottom: var(--spacing-xs);
        }

        .feature-item-content p {
            font-size: 0.95rem;
            color: var(--text-muted-color);
            margin-bottom: 0;
        }

        /* FAQ Section */
        .faq-section {
            padding: var(--spacing-xl) 0;
            background-color: var(--card-bg);
        }

        .faq-section h2 {
            text-align: center;
        }

        .faq-list {
            list-style: none;
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            border-bottom: 1px solid var(--border-color);
        }

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

        .faq-question {
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            padding: var(--spacing-md) 0;
            font-size: 1.1rem;
            font-weight: bold;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: var(--text-color);
        }

        .faq-question::after {
            content: '+';
            font-size: 1.3rem;
            transition: transform 0.3s ease;
        }

        .faq-item.open .faq-question::after {
            content: '-';
            transform: rotate(180deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
            font-size: 1rem;
            color: var(--text-muted-color);
            padding: 0 var(--spacing-md);
        }

        .faq-item.open .faq-answer {
            max-height: 200px; /* Adjust as needed */
            padding: var(--spacing-md) 0;
        }

        /* CTA Section */
        .cta-section {
            background-color: var(--primary-color);
            color: #fff;
            text-align: center;
            padding: var(--spacing-xl) 0;
        }

        .cta-section h2 {
            font-size: 2.5rem;
            margin-bottom: var(--spacing-sm);
        }

        .cta-section p {
            font-size: 1.2rem;
            margin-bottom: var(--spacing-lg);
        }

        .cta-section .btn {
            background-color: #fff;
            color: var(--primary-color);
            font-size: 1.1rem;
            padding: var(--spacing-sm) var(--spacing-xl);
        }

        .cta-section .btn:hover,
        .cta-section .btn:focus {
            background-color: var(--secondary-color);
            color: #fff;
        }

        /* Footer */
        footer {
            background-color: #333;
            color: #eee;
            padding: var(--spacing-lg) 0 var(--spacing-md);
            margin-top: auto;
        }

        footer .container {
            text-align: center;
        }

        .footer-logo {
            font-size: 1.8rem;
            font-weight: bold;
            color: #fff;
            display: block;
            margin-bottom: var(--spacing-md);
            text-decoration: none;
        }

        .footer-logo:hover {
            color: var(--secondary-color);
        }

        .footer-nav ul {
            list-style: none;
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            margin-bottom: var(--spacing-md);
        }

        .footer-nav li {
            margin: 0 var(--spacing-md);
        }

        .footer-nav a {
            color: #ccc;
            transition: color 0.3s ease;
        }

        .footer-nav a:hover,
        .footer-nav a:focus {
            color: #fff;
            text-decoration: underline;
        }

        .copyright {
            font-size: 0.9rem;
            color: #aaa;
        }

        /* Responsive Design */
        @media (max-width: 992px) {
            html { font-size: 15px; }
            .hero h1 { font-size: 2.5rem; }
            .hero p { font-size: 1.1rem; }

            .feature-section .container {
                grid-template-columns: 1fr;
            }
            .feature-section h2 {
                text-align: center;
            }

            .main-nav {
                display: none; /* Hide desktop nav, would typically be replaced by a mobile menu */
            }
            header .container {
                flex-wrap: wrap;
            }
            .logo {
                width: 100%;
                text-align: center;
                margin-bottom: var(--spacing-md);
            }
        }

        @media (max-width: 768px) {
            html { font-size: 14px; }
            .hero { min-height: 400px; padding: var(--spacing-xl) 0; }
            .hero h1 { font-size: 2.2rem; }
            .hero p { font-size: 1rem; }

            .content-grid {
                grid-template-columns: 1fr;
            }

            .cta-section h2 {
                font-size: 2rem;
            }
            .cta-section p {
                font-size: 1.1rem;
            }

            .footer-nav ul {
                flex-direction: column;
                align-items: center;
            }
            .footer-nav li {
                margin: var(--spacing-xs) 0;
            }
        }

        @media (max-width: 576px) {
            html { font-size: 14px; }
            .hero { min-height: 350px; }
            .hero h1 { font-size: 2rem; }

            .content-section, .feature-section, .faq-section, .cta-section {
                padding: var(--spacing-lg) 0;
            }
        }

/* roulang page: category2 */
:root {
            --primary-color: #e91e63; /* 品牌主色 - 热情 */
            --secondary-color: #f5f5f5; /* 浅灰背景 */
            --accent-color: #ffc107; /* 点缀色 - 活力 */
            --text-color: #333; /* 主要文字 */
            --sub-text-color: #777; /* 次要文字 */
            --border-color: #eee; /* 分隔线/边框 */
            --background-light: #ffffff; /* 页面背景 */
            --background-dark: #f9f9f9; /* 区域背景 */
            --card-bg: #ffffff; /* 卡片背景 */
            --button-hover-bg: #d81b60; /* 按钮悬停背景 */
            --button-text-color: #ffffff; /* 按钮文字 */
            --nav-text-color: #333;
            --nav-active-color: var(--primary-color);
            --footer-bg: #333; /* 页脚背景 */
            --footer-text-color: #ccc;
            --footer-link-color: #fff;
            --radius-sm: 4px;
            --radius-md: 8px;
            --radius-lg: 12px;
            --shadow-md: 0 4px 10px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 8px 20px rgba(0, 0, 0, 0.1);
            --container-width: 1200px;
            --spacing-xs: 8px;
            --spacing-sm: 16px;
            --spacing-md: 24px;
            --spacing-lg: 32px;
            --spacing-xl: 48px;
            --line-height-base: 1.6;
            --font-size-base: 16px;
            --font-size-h1: 2.5rem;
            --font-size-h2: 2rem;
            --font-size-h3: 1.5rem;
            --font-size-h4: 1.2rem;
            --font-size-h5: 1rem;
            --font-size-small: 0.875rem;
        }

        body {
            font-family: 'Helvetica Neue', Arial, sans-serif;
            margin: 0;
            padding: 0;
            color: var(--text-color);
            background-color: var(--background-light);
            line-height: var(--line-height-base);
            font-size: var(--font-size-base);
            overflow-x: hidden; /* Prevent horizontal scrollbar */
        }

        h1, h2, h3, h4, h5, h6 {
            margin-top: 0;
            margin-bottom: var(--spacing-md);
            font-weight: 600;
            line-height: 1.3;
            color: var(--text-color);
        }

        h1 { font-size: var(--font-size-h1); }
        h2 { font-size: var(--font-size-h2); }
        h3 { font-size: var(--font-size-h3); }
        h4 { font-size: var(--font-size-h4); }
        h5 { font-size: var(--font-size-h5); }
        h6 { font-size: var(--font-size-small); }

        a {
            color: var(--primary-color);
            text-decoration: none;
            transition: color 0.2s ease-in-out;
        }

        a:hover {
            color: var(--button-hover-bg);
            text-decoration: underline;
        }

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

        .container {
            width: 90%;
            max-width: var(--container-width);
            margin: 0 auto;
        }

        /* Header & Navigation */
        header {
            background-color: var(--background-light);
            padding: var(--spacing-sm) 0;
            border-bottom: 1px solid var(--border-color);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow-md);
        }

        header .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .logo {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--primary-color);
            text-decoration: none;
        }
        .logo:hover {
            text-decoration: none;
        }

        nav ul {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
        }

        nav ul li {
            margin-left: var(--spacing-lg);
        }

        nav ul li a {
            color: var(--nav-text-color);
            font-weight: 500;
            font-size: var(--font-size-h5);
            padding: var(--spacing-sm) 0;
            position: relative;
            transition: color 0.2s ease-in-out;
        }

        nav ul li a:hover,
        nav ul li a.active {
            color: var(--nav-active-color);
        }

        nav ul li a.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background-color: var(--nav-active-color);
        }

        /* Mobile Navigation */
        .mobile-nav-toggle {
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            font-size: 2rem;
            color: var(--text-color);
        }

        /* Hero Section */
        .hero {
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            color: #fff;
            text-align: center;
            padding: var(--spacing-xl) var(--spacing-sm);
            position: relative;
            display: flex;
            align-items: center;
            justify-content: center;
            min-height: 50vh;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.5); /* Dark overlay */
        }

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

        .hero h1 {
            font-size: var(--font-size-h1);
            margin-bottom: var(--spacing-md);
            color: #fff;
            text-shadow: 0 2px 8px rgba(0,0,0,0.5);
        }

        .hero p {
            font-size: var(--font-size-h4);
            margin-bottom: var(--spacing-lg);
            color: #eee;
            text-shadow: 0 1px 4px rgba(0,0,0,0.5);
        }

        .cta-button {
            display: inline-block;
            background-color: var(--accent-color);
            color: var(--button-text-color);
            padding: var(--spacing-sm) var(--spacing-lg);
            border-radius: var(--radius-lg);
            font-size: var(--font-size-h5);
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            transition: background-color 0.2s ease-in-out, transform 0.2s ease-in-out;
            box-shadow: var(--shadow-md);
            border: none;
            cursor: pointer;
        }

        .cta-button:hover {
            background-color: var(--button-hover-bg);
            color: var(--button-text-color);
            text-decoration: none;
            transform: translateY(-2px);
        }

        /* Section Styles */
        section {
            padding: var(--spacing-xl) 0;
            background-color: var(--background-light);
        }

        section.secondary-bg {
            background-color: var(--background-dark);
        }

        section h2 {
            text-align: center;
            font-size: var(--font-size-h2);
            margin-bottom: var(--spacing-lg);
            position: relative;
            padding-bottom: var(--spacing-sm);
        }

        section h2::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 3px;
            background-color: var(--primary-color);
            border-radius: var(--radius-sm);
        }

        /* Category Cards */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: var(--spacing-lg);
        }

        .category-card {
            background-color: var(--card-bg);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            transition: transform 0.2s ease-in-out, box-shadow 0.2s ease-in-out;
            display: flex;
            flex-direction: column;
        }

        .category-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-lg);
        }

        .category-card img {
            width: 100%;
            height: 200px; /* Fixed height for consistency */
            object-fit: cover; /* Crop and cover */
        }

        .category-card-content {
            padding: var(--spacing-md);
            flex-grow: 1;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .category-card-content h3 {
            font-size: var(--font-size-h4);
            margin-bottom: var(--spacing-sm);
            color: var(--primary-color);
        }

        .category-card-content p {
            font-size: var(--font-size-small);
            color: var(--sub-text-color);
            flex-grow: 1;
            margin-bottom: var(--spacing-md);
        }

        .category-card-content .category-link {
            display: inline-block;
            font-weight: 700;
            margin-top: auto; /* Push to bottom */
        }

        /* FAQ Section */
        .faq-section {
            background-color: var(--background-dark);
        }

        .faq-item {
            margin-bottom: var(--spacing-sm);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
        }

        .faq-question {
            background-color: var(--card-bg);
            padding: var(--spacing-md);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 500;
            transition: background-color 0.2s ease-in-out;
        }

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

        .faq-question::after {
            content: '+';
            font-size: 1.5rem;
            transition: transform 0.2s ease-in-out;
        }

        .faq-item.active .faq-question::after {
            transform: rotate(45deg);
        }

        .faq-answer {
            padding: var(--spacing-md);
            background-color: var(--background-light);
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out, padding 0.3s ease-out;
        }

        .faq-item.active .faq-answer {
            max-height: 200px; /* Adjust as needed */
            padding: var(--spacing-md);
        }

        /* CTA Section */
        .cta-section {
            background-image: linear-gradient(to right, var(--primary-color), #c2185b); /* Gradient */
            color: #fff;
            text-align: center;
            padding: var(--spacing-xl) 0;
        }

        .cta-section h2 {
            color: #fff;
            font-size: var(--font-size-h2);
            margin-bottom: var(--spacing-md);
        }

        .cta-section p {
            font-size: var(--font-size-h5);
            margin-bottom: var(--spacing-lg);
            opacity: 0.9;
        }

        .cta-section .cta-button {
            background-color: var(--accent-color);
            color: var(--button-text-color);
            padding: var(--spacing-sm) var(--spacing-lg);
            border-radius: var(--radius-lg);
            font-weight: 700;
            box-shadow: var(--shadow-md);
        }

        .cta-section .cta-button:hover {
            background-color: var(--accent-color);
            opacity: 0.9;
        }

        /* Footer */
        footer {
            background-color: var(--footer-bg);
            color: var(--footer-text-color);
            padding: var(--spacing-xl) 0;
            font-size: var(--font-size-small);
        }

        footer .container {
            text-align: center;
        }

        .footer-logo {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--primary-color);
            text-decoration: none;
            display: block;
            margin-bottom: var(--spacing-md);
        }

        .footer-nav ul {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            margin-bottom: var(--spacing-md);
        }

        .footer-nav ul li {
            margin: 0 var(--spacing-md);
            margin-bottom: var(--spacing-sm); /* For wrap */
        }

        .footer-nav ul li a {
            color: var(--footer-link-color);
            transition: color 0.2s ease-in-out;
        }

        .footer-nav ul li a:hover {
            color: var(--accent-color);
            text-decoration: underline;
        }

        .copyright {
            margin: 0;
            opacity: 0.8;
        }

        /* Responsive */
        @media (max-width: 992px) {
            .container {
                width: 95%;
            }
            .hero h1 {
                font-size: 2.2rem;
            }
            .hero p {
                font-size: 1.3rem;
            }
            .category-grid {
                grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            }
        }

        @media (max-width: 768px) {
            .logo {
                font-size: 1.5rem;
            }
            nav ul {
                display: none; /* Hide desktop nav */
            }
            .mobile-nav-toggle {
                display: block; /* Show mobile toggle */
            }
            header .container {
                padding: var(--spacing-sm) var(--spacing-md);
            }
            .hero {
                min-height: 40vh;
                padding: var(--spacing-lg) var(--spacing-sm);
            }
            .hero h1 {
                font-size: 1.8rem;
            }
            .hero p {
                font-size: 1.1rem;
            }
            section {
                padding: var(--spacing-lg) 0;
            }
            section h2 {
                font-size: 1.8rem;
                margin-bottom: var(--spacing-md);
            }
            .category-grid {
                grid-template-columns: 1fr;
            }
            .category-card img {
                height: 180px;
            }
            .footer-nav ul {
                flex-direction: column;
            }
            .footer-nav ul li {
                margin: var(--spacing-xs) 0;
            }
        }

        @media (max-width: 520px) {
            .logo {
                font-size: 1.3rem;
            }
            .hero {
                padding: var(--spacing-md) var(--spacing-sm);
                min-height: 30vh;
            }
            .hero h1 {
                font-size: 1.5rem;
            }
            .hero p {
                font-size: 1rem;
            }
            .cta-button, .category-card-content .category-link {
                padding: var(--spacing-xs) var(--spacing-md);
                font-size: 0.9rem;
            }
        }

/* roulang page: category3 */
:root {
            --primary-color: #e91e63; /* 鲜艳的粉色 */
            --secondary-color: #2196f3; /* 亮蓝色 */
            --accent-color: #ffc107; /* 黄色点缀 */
            --background-color: #f8f9fa;
            --text-color: #333;
            --text-muted-color: #6c757d;
            --border-color: #dee2e6;
            --card-bg: #ffffff;
            --footer-bg: #343a40;
            --footer-text-color: #adb5bd;
            --container-max-width: 1200px;
            --spacing-unit: 1rem;
            --border-radius: 0.5rem;
            --box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
        }

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

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: var(--text-color);
            background-color: var(--background-color);
            scroll-behavior: smooth;
        }

        .container {
            max-width: var(--container-max-width);
            margin: 0 auto;
            padding: 0 calc(var(--spacing-unit) * 1.5);
        }

        a {
            color: var(--secondary-color);
            text-decoration: none;
            transition: color 0.3s ease;
        }

        a:hover {
            color: var(--primary-color);
            text-decoration: underline;
        }

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

        h1, h2, h3, h4, h5, h6 {
            margin-bottom: var(--spacing-unit);
            line-height: 1.4;
            font-weight: 600;
        }

        h1 { font-size: 2.5rem; }
        h2 { font-size: 2rem; }
        h3 { font-size: 1.75rem; }
        h4 { font-size: 1.5rem; }
        h5 { font-size: 1.25rem; }
        h6 { font-size: 1rem; }

        .btn {
            display: inline-block;
            padding: 0.8rem 1.5rem;
            border: none;
            border-radius: var(--border-radius);
            font-size: 1rem;
            font-weight: 600;
            text-align: center;
            cursor: pointer;
            transition: background-color 0.3s ease, transform 0.2s ease, box-shadow 0.3s ease;
            white-space: nowrap;
        }

        .btn-primary {
            background-color: var(--primary-color);
            color: #ffffff;
        }

        .btn-primary:hover {
            background-color: #d81b60;
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(233, 30, 99, 0.3);
        }
        
        .btn-secondary {
            background-color: var(--secondary-color);
            color: #ffffff;
        }

        .btn-secondary:hover {
            background-color: #1e88e5;
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(33, 150, 243, 0.3);
        }

        .btn-outline-primary {
            background-color: transparent;
            color: var(--primary-color);
            border: 2px solid var(--primary-color);
        }

        .btn-outline-primary:hover {
            background-color: var(--primary-color);
            color: #ffffff;
            transform: translateY(-2px);
        }

        /* Header & Navigation */
        header {
            background-color: var(--card-bg);
            padding: var(--spacing-unit) 0;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
            position: sticky;
            top: 0;
            z-index: 1000;
        }

        header .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .site-logo {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--primary-color);
            text-decoration: none;
            letter-spacing: 0.5px;
        }

        .site-logo:hover {
            color: var(--secondary-color);
            text-decoration: none;
        }

        .main-nav ul {
            list-style: none;
            display: flex;
        }

        .main-nav ul li {
            margin-left: calc(var(--spacing-unit) * 2);
        }

        .main-nav ul li a {
            font-size: 1.1rem;
            font-weight: 500;
            color: var(--text-color);
            padding: 0.5rem 0;
            position: relative;
            transition: color 0.3s ease;
        }

        .main-nav ul li a:hover,
        .main-nav ul li a.active {
            color: var(--primary-color);
        }
        
        .main-nav ul li a.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background-color: var(--primary-color);
        }

        /* Mobile Navigation Toggle (Hidden on Desktop) */
        .mobile-nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: var(--text-color);
        }

        /* Hero Section */
        .hero {
            background-image: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)), url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            color: #ffffff;
            text-align: center;
            padding: calc(var(--spacing-unit) * 8) 0;
            height: 70vh; /* Adjusted height for better visual */
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            box-shadow: inset 0 8px 12px rgba(0,0,0,0.3);
        }

        .hero h1 {
            font-size: 3.5rem;
            margin-bottom: var(--spacing-unit);
            text-shadow: 0 4px 8px rgba(0, 0, 0, 0.4);
        }

        .hero p {
            font-size: 1.4rem;
            max-width: 800px;
            margin-bottom: calc(var(--spacing-unit) * 2);
            text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
        }
        
        .hero .btn {
            font-size: 1.2rem;
            padding: 1rem 2rem;
            margin: 0 var(--spacing-unit);
        }

        /* Section Styling */
        .section {
            padding: calc(var(--spacing-unit) * 5) 0;
        }

        .section h2 {
            text-align: center;
            font-size: 2.8rem;
            margin-bottom: calc(var(--spacing-unit) * 3);
            color: var(--primary-color);
        }

        /* Category Cards */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: calc(var(--spacing-unit) * 2);
        }

        .category-card {
            background-color: var(--card-bg);
            border-radius: var(--border-radius);
            box-shadow: var(--box-shadow);
            overflow: hidden;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            display: flex;
            flex-direction: column;
        }

        .category-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
        }

        .category-card img {
            width: 100%;
            height: 220px; /* Fixed height for images */
            object-fit: cover; /* Ensures image covers the area */
        }

        .category-card-content {
            padding: calc(var(--spacing-unit) * 2);
            flex-grow: 1;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .category-card h3 {
            font-size: 1.5rem;
            color: var(--primary-color);
            margin-bottom: var(--spacing-unit);
        }
        
        .category-card p {
            font-size: 0.95rem;
            color: var(--text-muted-color);
            flex-grow: 1; /* Allows description to take available space */
        }
        
        .category-card .btn {
            margin-top: var(--spacing-unit);
            align-self: flex-start; /* Align button to the left */
        }

        /* FAQ Section */
        .faq-section {
            background-color: #ffffff;
            border-radius: var(--border-radius);
            box-shadow: var(--box-shadow);
            padding: calc(var(--spacing-unit) * 3);
        }
        
        .faq-section h2 {
            color: var(--text-color);
        }

        .faq-item {
            margin-bottom: var(--spacing-unit);
            border-bottom: 1px solid var(--border-color);
        }

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

        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            padding: var(--spacing-unit) 0;
            font-weight: 500;
            font-size: 1.1rem;
            transition: color 0.3s ease;
        }
        
        .faq-question:hover {
            color: var(--primary-color);
        }

        .faq-question::after {
            content: '+';
            font-size: 1.5rem;
            transition: transform 0.3s ease;
            color: var(--secondary-color);
        }

        .faq-item.open .faq-question::after {
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease-out;
            padding: 0 var(--spacing-unit);
            font-size: 0.95rem;
            color: var(--text-muted-color);
        }

        .faq-item.open .faq-answer {
            max-height: 200px; /* Adjust based on expected answer length */
            padding: var(--spacing-unit) 0;
        }

        /* Call to Action (CTA) */
        .cta-section {
            background-color: var(--primary-color);
            color: #ffffff;
            text-align: center;
            padding: calc(var(--spacing-unit) * 5) 0;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-image: linear-gradient(135deg, var(--primary-color) 50%, var(--secondary-color) 50%);
            background-size: 4px 4px;
            opacity: 0.1;
        }

        .cta-section h2 {
            font-size: 2.8rem;
            margin-bottom: calc(var(--spacing-unit) * 1.5);
            color: inherit;
        }

        .cta-section p {
            font-size: 1.2rem;
            margin-bottom: calc(var(--spacing-unit) * 2.5);
            opacity: 0.9;
        }
        
        .cta-section .btn {
            font-size: 1.2rem;
            padding: 1rem 2.5rem;
            background-color: var(--accent-color);
            color: var(--text-color);
            box-shadow: 0 6px 16px rgba(255, 193, 7, 0.3);
        }

        .cta-section .btn:hover {
            background-color: #e0a800;
            transform: translateY(-3px);
            box-shadow: 0 8px 20px rgba(255, 193, 7, 0.4);
        }

        /* Footer */
        footer {
            background-color: var(--footer-bg);
            color: var(--footer-text-color);
            padding: calc(var(--spacing-unit) * 3) 0;
            text-align: center;
        }

        footer .container {
            display: flex;
            flex-direction: column;
            align-items: center;
        }

        .footer-logo {
            font-size: 1.8rem;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: var(--spacing-unit);
            text-decoration: none;
        }

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

        .footer-nav ul {
            list-style: none;
            padding: 0;
            margin-bottom: var(--spacing-unit);
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
        }

        .footer-nav ul li {
            margin: 0 calc(var(--spacing-unit) * 1.5);
        }

        .footer-nav ul li a {
            color: var(--footer-text-color);
            font-size: 0.95rem;
            transition: color 0.3s ease;
        }

        .footer-nav ul li a:hover {
            color: #ffffff;
            text-decoration: underline;
        }

        .copyright {
            font-size: 0.9rem;
            margin-top: var(--spacing-unit);
        }

        /* Responsive Design */
        @media (max-width: 992px) {
            h1 { font-size: 2.2rem; }
            h2 { font-size: 1.8rem; }
            .hero h1 { font-size: 3rem; }
            .hero p { font-size: 1.2rem; }
            .section { padding: calc(var(--spacing-unit) * 4) 0; }
            .cta-section { padding: calc(var(--spacing-unit) * 4) 0; }
        }

        @media (max-width: 768px) {
            .main-nav {
                display: none; /* Hide desktop nav */
            }

            .mobile-nav-toggle {
                display: block; /* Show toggle button */
            }
            
            header .container {
                 padding: var(--spacing-unit) calc(var(--spacing-unit) * 1.5);
            }

            .hero {
                padding: calc(var(--spacing-unit) * 6) 0;
                height: 50vh;
            }
            .hero h1 { font-size: 2.5rem; }
            .hero p { font-size: 1.1rem; }
            .hero .btn { font-size: 1.1rem; padding: 0.9rem 1.8rem; }

            .category-grid {
                grid-template-columns: 1fr;
            }

            .footer-nav ul {
                flex-direction: column;
            }
            .footer-nav ul li {
                margin: var(--spacing-unit) 0;
            }
        }

        @media (max-width: 576px) {
            h1 { font-size: 2rem; }
            h2 { font-size: 1.6rem; }
            .hero {
                padding: calc(var(--spacing-unit) * 5) 0;
                height: 40vh;
            }
            .hero h1 { font-size: 2.2rem; }
            .hero p { font-size: 1rem; }
            .hero .btn { font-size: 1rem; padding: 0.8rem 1.5rem; }
            .section h2 { font-size: 2.2rem; margin-bottom: calc(var(--spacing-unit) * 2); }
            .cta-section h2 { font-size: 2.2rem; }
            .cta-section p { font-size: 1.1rem; }
        }

/* roulang page: category4 */
:root {
            --primary-color: #e91e63; /* Hot Pink */
            --secondary-color: #ffc107; /* Amber */
            --background-color: #f8f9fa;
            --text-color: #333;
            --text-muted-color: #777;
            --border-color: #dee2e6;
            --card-background: #ffffff;
            --section-background: #ffffff;
            --button-hover-bg: #d81b60;
            --button-hover-text: #ffffff;
            --nav-bg: #ffffff;
            --footer-bg: #343a40;
            --footer-text-color: #adb5bd;
            --footer-link-color: #ffffff;
            --footer-link-hover-color: var(--secondary-color);
            --container-max-width: 1200px;
            --spacing-xs: 8px;
            --spacing-sm: 16px;
            --spacing-md: 24px;
            --spacing-lg: 32px;
            --spacing-xl: 48px;
            --border-radius-sm: 4px;
            --border-radius-md: 8px;
            --border-radius-lg: 12px;
            --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
            --shadow-lg: 0 8px 20px rgba(0,0,0,0.15);
        }

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

        html {
            font-size: 16px;
            scroll-behavior: smooth;
        }

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: var(--text-color);
            background-color: var(--background-color);
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }

        .container {
            width: 90%;
            max-width: var(--container-max-width);
            margin: 0 auto;
        }

        a {
            color: var(--primary-color);
            text-decoration: none;
            transition: color 0.3s ease;
        }

        a:hover, a:focus {
            color: var(--button-hover-bg);
            text-decoration: underline;
        }

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

        h1, h2, h3, h4, h5, h6 {
            margin-bottom: var(--spacing-md);
            line-height: 1.3;
            font-weight: 600;
        }

        h1 { font-size: 2.5rem; }
        h2 { font-size: 2rem; }
        h3 { font-size: 1.75rem; }
        h4 { font-size: 1.5rem; }
        h5 { font-size: 1.25rem; }
        h6 { font-size: 1rem; }

        .btn {
            display: inline-block;
            padding: var(--spacing-sm) var(--spacing-lg);
            border: none;
            border-radius: var(--border-radius-md);
            font-size: 1rem;
            font-weight: 500;
            cursor: pointer;
            transition: background-color 0.3s ease, color 0.3s ease, transform 0.2s ease;
            text-align: center;
        }

        .btn-primary {
            background-color: var(--primary-color);
            color: #fff;
        }

        .btn-primary:hover, .btn-primary:focus {
            background-color: var(--button-hover-bg);
            color: var(--button-hover-text);
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

        .btn-secondary {
            background-color: var(--secondary-color);
            color: var(--text-color);
        }

        .btn-secondary:hover, .btn-secondary:focus {
            background-color: darken(var(--secondary-color), 10%);
            color: var(--text-color);
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

        .section {
            padding: var(--spacing-xl) 0;
        }

        .section-header {
            text-align: center;
            margin-bottom: var(--spacing-lg);
        }

        .section-header h2 {
            font-size: 2.5rem;
            margin-bottom: var(--spacing-sm);
        }

        .section-header p {
            font-size: 1.1rem;
            color: var(--text-muted-color);
        }

        /* Header & Navigation */
        header {
            background-color: var(--nav-bg);
            box-shadow: var(--shadow-md);
            padding: var(--spacing-sm) 0;
            position: sticky;
            top: 0;
            z-index: 1000;
        }

        header .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .site-logo {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--primary-color);
            letter-spacing: -1px;
        }
        .site-logo:hover {
            text-decoration: none;
        }

        .main-nav ul {
            list-style: none;
            display: flex;
            gap: var(--spacing-md);
        }

        .main-nav a {
            font-weight: 500;
            font-size: 1.1rem;
            color: var(--text-color);
            padding: var(--spacing-sm) var(--spacing-md);
            border-radius: var(--border-radius-sm);
            transition: background-color 0.3s ease, color 0.3s ease;
        }

        .main-nav a:hover, .main-nav a:focus {
            background-color: var(--primary-color);
            color: #fff;
            text-decoration: none;
        }

        .main-nav .nav-active {
            background-color: var(--primary-color);
            color: #fff;
        }

        /* Mobile Navigation (Hamburger Menu) */
        .hamburger-menu {
            display: none;
            font-size: 2rem;
            cursor: pointer;
            color: var(--text-color);
        }

        /* Hero Section */
        .hero {
            background-image: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)), url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            color: #fff;
            text-align: center;
            padding: var(--spacing-xl) 0;
            position: relative;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(to top, rgba(0,0,0,0.5) 0%, rgba(0,0,0,0.3) 50%, rgba(0,0,0,0) 100%);
            z-index: 1;
        }

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

        .hero h1 {
            font-size: 3.5rem;
            margin-bottom: var(--spacing-sm);
        }

        .hero p {
            font-size: 1.3rem;
            margin-bottom: var(--spacing-lg);
            max-width: 800px;
            margin-left: auto;
            margin-right: auto;
        }

        /* Content Cards */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: var(--spacing-lg);
        }

        .card {
            background-color: var(--card-background);
            border-radius: var(--border-radius-lg);
            box-shadow: var(--shadow-lg);
            overflow: hidden;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            display: flex;
            flex-direction: column;
        }

        .card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-lg);
        }

        .card img {
            width: 100%;
            height: 220px; /* Fixed height for consistency */
            object-fit: cover;
        }

        .card-content {
            padding: var(--spacing-md);
            flex-grow: 1;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .card-title {
            font-size: 1.5rem;
            margin-bottom: var(--spacing-sm);
            color: var(--primary-color);
        }

        .card-description {
            font-size: 0.95rem;
            color: var(--text-muted-color);
            margin-bottom: var(--spacing-md);
            flex-grow: 1;
        }

        .card-footer {
            margin-top: var(--spacing-sm);
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .card-tags {
            display: flex;
            gap: var(--spacing-xs);
        }

        .card-tag {
            background-color: #e0e0e0;
            color: var(--text-muted-color);
            padding: 4px 8px;
            border-radius: var(--border-radius-sm);
            font-size: 0.8rem;
        }

        .card-link {
            font-weight: 500;
            color: var(--primary-color);
        }
        .card-link:hover {
            text-decoration: none;
        }


        /* Feature Section */
        .features .container {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-lg);
        }

        .feature-item {
            text-align: center;
            padding: var(--spacing-md);
            background-color: var(--section-background);
            border-radius: var(--border-radius-lg);
            box-shadow: var(--shadow-md);
        }

        .feature-item i {
            font-size: 3rem;
            color: var(--primary-color);
            margin-bottom: var(--spacing-sm);
        }

        .feature-item h4 {
            font-size: 1.3rem;
            margin-bottom: var(--spacing-xs);
        }

        .feature-item p {
            font-size: 0.95rem;
            color: var(--text-muted-color);
        }

        /* FAQ Section */
        .faq-section {
            background-color: var(--section-background);
        }

        .faq-item {
            margin-bottom: var(--spacing-md);
            border: 1px solid var(--border-color);
            border-radius: var(--border-radius-lg);
            overflow: hidden;
        }

        .faq-question {
            padding: var(--spacing-md);
            background-color: #f1f1f1;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 500;
            border-radius: var(--border-radius-lg) var(--border-radius-lg) 0 0;
        }
        .faq-item:last-child .faq-question {
            border-radius: var(--border-radius-lg) var(--border-radius-lg) 0 0;
        }

        .faq-question::after {
            content: '+';
            font-size: 1.5rem;
            transition: transform 0.3s ease;
        }

        .faq-answer {
            padding: var(--spacing-md);
            background-color: var(--card-background);
            display: none; /* Hidden by default */
            border-radius: 0 0 var(--border-radius-lg) var(--border-radius-lg);
        }

        .faq-item.active .faq-question::after {
            content: '-';
            transform: rotate(0deg);
        }

        .faq-item.active .faq-answer {
            display: block;
        }

        /* CTA Section */
        .cta-section {
            background-color: var(--primary-color);
            color: #fff;
            text-align: center;
            padding: var(--spacing-xl) 0;
            background-image: linear-gradient(rgba(0, 0, 0, 0.4), rgba(0, 0, 0, 0.4)), url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
             content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(to right, rgba(233, 30, 99, 0.8) 0%, rgba(255, 193, 7, 0.8) 100%);
            z-index: 1;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
        }

        .cta-section h2 {
            font-size: 2.8rem;
            margin-bottom: var(--spacing-sm);
        }

        .cta-section p {
            font-size: 1.2rem;
            margin-bottom: var(--spacing-lg);
        }

        .cta-section .btn {
            background-color: #fff;
            color: var(--primary-color);
            font-size: 1.2rem;
            padding: var(--spacing-sm) var(--spacing-xl);
        }

        .cta-section .btn:hover, .cta-section .btn:focus {
            background-color: var(--button-hover-bg);
            color: #fff;
        }

        /* Footer */
        footer {
            background-color: var(--footer-bg);
            color: var(--footer-text-color);
            padding: var(--spacing-xl) 0;
            margin-top: auto; /* Pushes footer to bottom */
        }

        footer .container {
            text-align: center;
        }

        .footer-logo {
            font-size: 2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: var(--spacing-md);
            display: block;
        }
        .footer-logo:hover {
            text-decoration: none;
        }

        .footer-nav ul {
            list-style: none;
            padding: 0;
            margin-bottom: var(--spacing-md);
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: var(--spacing-md);
        }

        .footer-nav a {
            color: var(--footer-link-color);
            font-weight: 500;
            transition: color 0.3s ease;
        }

        .footer-nav a:hover, .footer-nav a:focus {
            color: var(--footer-link-hover-color);
            text-decoration: none;
        }

        .copyright {
            font-size: 0.9rem;
        }

        /* Responsive Design */
        @media (max-width: 992px) {
            html { font-size: 15px; }
            .hero h1 { font-size: 3rem; }
            .hero p { font-size: 1.1rem; }
            .section-header h2 { font-size: 2.2rem; }

            .features .container {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .container { width: 95%; }

            header .container {
                flex-wrap: wrap;
            }
            .site-logo { margin-bottom: var(--spacing-sm); }

            .main-nav {
                display: none; /* Hide desktop nav */
                width: 100%;
                text-align: center;
                margin-top: var(--spacing-md);
                background-color: var(--nav-bg);
                box-shadow: var(--shadow-md);
                border-radius: var(--border-radius-lg);
                padding: var(--spacing-md);
            }
            .main-nav ul {
                flex-direction: column;
                gap: var(--spacing-sm);
            }
            .main-nav li { margin-bottom: var(--spacing-sm); }
            .main-nav a { display: block; }

            .hamburger-menu {
                display: block; /* Show hamburger */
            }

            .hero h1 { font-size: 2.5rem; }
            .hero p { font-size: 1rem; }
            .cta-section h2 { font-size: 2rem; }
            .cta-section p { font-size: 1.1rem; }
            .cta-section .btn { font-size: 1.1rem; }

            .features .container {
                grid-template-columns: 1fr;
            }

            .footer-nav ul {
                flex-direction: column;
                gap: var(--spacing-sm);
            }
        }

        @media (max-width: 576px) {
            html { font-size: 14px; }
            .hero { padding: var(--spacing-lg) 0; }
            .hero h1 { font-size: 2rem; }
            .section { padding: var(--spacing-lg) 0; }
            .card-grid { grid-template-columns: 1fr; }

            .card-content { padding: var(--spacing-sm); }
            .card-title { font-size: 1.3rem; }
            .card-description { font-size: 0.9rem; }

            .cta-section { padding: var(--spacing-lg) 0; }
            .cta-section h2 { font-size: 1.8rem; }
            .cta-section p { font-size: 1rem; }
            .cta-section .btn { font-size: 1rem; padding: var(--spacing-sm) var(--spacing-lg); }
        }

/* roulang page: category5 */
:root {
            --primary-color: #e91e63; /* Pink */
            --secondary-color: #f50057; /* Deeper Pink */
            --accent-color: #ffc107; /* Amber */
            --background-color: #f8f9fa;
            --text-color: #333;
            --muted-text-color: #777;
            --border-color: #ddd;
            --card-background: #fff;
            --footer-background: #333;
            --footer-text-color: #ccc;
            --font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            --border-radius: 8px;
            --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
            --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.1);
            --spacing-xs: 0.5rem;
            --spacing-sm: 1rem;
            --spacing-md: 1.5rem;
            --spacing-lg: 2rem;
            --spacing-xl: 3rem;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-family);
            color: var(--text-color);
            background-color: var(--background-color);
            line-height: 1.7;
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 var(--spacing-md);
            width: 100%;
        }

        a {
            color: var(--primary-color);
            text-decoration: none;
            transition: color 0.2s ease-in-out;
        }

        a:hover {
            color: var(--secondary-color);
        }

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

        h1, h2, h3, h4, h5, h6 {
            margin-bottom: var(--spacing-sm);
            line-height: 1.3;
        }

        h1 { font-size: 2.5rem; }
        h2 { font-size: 2rem; }
        h3 { font-size: 1.75rem; }
        h4 { font-size: 1.5rem; }

        /* Header & Navigation */
        header {
            background-color: var(--card-background);
            box-shadow: var(--shadow-sm);
            padding: var(--spacing-sm) 0;
            position: sticky;
            top: 0;
            z-index: 1000;
        }

        .site-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .logo {
            font-size: 1.8rem;
            font-weight: bold;
            color: var(--primary-color);
            text-decoration: none;
        }

        .site-header nav ul {
            list-style: none;
            display: flex;
            gap: var(--spacing-md);
        }

        .site-header nav a {
            color: var(--text-color);
            font-weight: 500;
            padding: var(--spacing-xs) 0;
            position: relative;
            text-decoration: none;
        }

        .site-header nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background-color: var(--primary-color);
            transition: width 0.3s ease-in-out;
        }

        .site-header nav a:hover::after,
        .site-header nav a.active::after {
            width: 100%;
        }

        .site-header nav a.active {
            color: var(--primary-color);
            font-weight: bold;
        }

        /* Mobile Navigation - Hamburger */
        .mobile-nav-toggle {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            cursor: pointer;
            color: var(--text-color);
        }

        /* Hero Section */
        .hero {
            background-image: url('/assets/images/backpic/back-3.webp');
            background-size: cover;
            background-position: center;
            color: #fff;
            text-align: center;
            padding: var(--spacing-xl) var(--spacing-md);
            min-height: 400px;
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.5);
            z-index: 1;
        }

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

        .hero h1 {
            font-size: 3rem;
            margin-bottom: var(--spacing-sm);
            text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.7);
        }

        .hero p {
            font-size: 1.2rem;
            margin-bottom: var(--spacing-lg);
            text-shadow: 1px 1px 4px rgba(0, 0, 0, 0.7);
        }

        .cta-button {
            display: inline-block;
            background-color: var(--accent-color);
            color: var(--footer-background);
            padding: var(--spacing-sm) var(--spacing-lg);
            border-radius: var(--border-radius);
            font-weight: bold;
            font-size: 1.1rem;
            transition: background-color 0.3s ease, transform 0.2s ease;
            box-shadow: var(--shadow-md);
        }

        .cta-button:hover {
            background-color: #ffb300; /* Darker Amber */
            transform: translateY(-2px);
            color: var(--footer-background);
        }

        /* Content Sections */
        .content-section {
            padding: var(--spacing-xl) 0;
        }

        .content-section h2 {
            text-align: center;
            margin-bottom: var(--spacing-lg);
            font-size: 2.2rem;
        }

        /* Cards */
        .cards-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: var(--spacing-lg);
        }

        .card {
            background-color: var(--card-background);
            border-radius: var(--border-radius);
            box-shadow: var(--shadow-md);
            overflow: hidden;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            display: flex;
            flex-direction: column;
        }

        .card:hover {
            transform: translateY(-5px);
            box-shadow: 0 8px 16px rgba(0, 0, 0, 0.15);
        }

        .card img {
            width: 100%;
            height: 200px; /* Fixed height for consistent card appearance */
            object-fit: cover;
        }

        .card-content {
            padding: var(--spacing-md);
            flex-grow: 1;
            display: flex;
            flex-direction: column;
        }

        .card-content h3 {
            margin-bottom: var(--spacing-sm);
            font-size: 1.4rem;
        }

        .card-content p {
            color: var(--muted-text-color);
            flex-grow: 1;
            margin-bottom: var(--spacing-sm);
        }

        .card-footer {
            padding: var(--spacing-md);
            border-top: 1px solid var(--border-color);
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-top: auto; /* Push footer to the bottom */
        }

        .card-footer a {
            font-weight: bold;
        }

        /* Feature Section */
        .features-section {
            background-color: var(--card-background);
            padding: var(--spacing-xl) 0;
        }

        .features-section .container {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-xl);
            align-items: center;
        }

        .features-section .content-column h2 {
            text-align: left;
            margin-bottom: var(--spacing-lg);
        }

        .features-section .content-column ul {
            list-style: none;
            padding: 0;
        }

        .features-section .content-column li {
            margin-bottom: var(--spacing-md);
            padding-left: var(--spacing-md);
            position: relative;
            color: var(--muted-text-color);
        }

        .features-section .content-column li::before {
            content: '✔';
            position: absolute;
            left: 0;
            color: var(--primary-color);
            font-weight: bold;
        }

        .features-section .image-column img {
            border-radius: var(--border-radius);
            box-shadow: var(--shadow-md);
        }

        /* FAQ Section */
        .faq-section {
            padding: var(--spacing-xl) 0;
        }

        .faq-section h2 {
            text-align: center;
            margin-bottom: var(--spacing-lg);
        }

        .faq-item {
            margin-bottom: var(--spacing-sm);
            border: 1px solid var(--border-color);
            border-radius: var(--border-radius);
            background-color: var(--card-background);
        }

        .faq-question {
            background-color: var(--card-background);
            padding: var(--spacing-md);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: bold;
            border-radius: var(--border-radius) var(--border-radius) 0 0; /* Match card radius */
        }

        .faq-question::after {
            content: '+';
            font-size: 1.5rem;
            transition: transform 0.3s ease;
        }

        .faq-item.open .faq-question::after {
            transform: rotate(45deg);
        }

        .faq-answer {
            padding: var(--spacing-md);
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out, padding 0.3s ease-out;
            color: var(--muted-text-color);
            border-top: 1px solid var(--border-color);
            border-radius: 0 0 var(--border-radius) var(--border-radius); /* Match card radius */
        }

        .faq-item.open .faq-answer {
            max-height: 200px; /* Adjust as needed */
            padding: var(--spacing-md);
        }

        /* CTA Section */
        .cta-section {
            background-color: var(--primary-color);
            color: #fff;
            text-align: center;
            padding: var(--spacing-xl) 0;
        }

        .cta-section h2 {
            font-size: 2.5rem;
            margin-bottom: var(--spacing-sm);
        }

        .cta-section p {
            font-size: 1.2rem;
            margin-bottom: var(--spacing-lg);
            opacity: 0.9;
        }

        .cta-section .cta-button {
            background-color: var(--accent-color);
            color: var(--footer-background);
        }

        .cta-section .cta-button:hover {
            background-color: #ffb300;
        }

        /* Footer */
        footer {
            background-color: var(--footer-background);
            color: var(--footer-text-color);
            padding: var(--spacing-xl) 0 var(--spacing-sm);
            margin-top: auto; /* Ensure footer is at the bottom */
        }

        .footer-logo {
            font-size: 1.8rem;
            font-weight: bold;
            color: #fff;
            text-decoration: none;
            display: block;
            margin-bottom: var(--spacing-md);
        }

        .footer-nav ul {
            list-style: none;
            padding: 0;
            margin-bottom: var(--spacing-md);
            display: flex;
            flex-wrap: wrap;
            gap: var(--spacing-sm);
        }

        .footer-nav li a {
            color: var(--footer-text-color);
            text-decoration: none;
            transition: color 0.2s ease-in-out;
        }

        .footer-nav li a:hover {
            color: #fff;
        }

        .copyright {
            text-align: center;
            font-size: 0.9rem;
            opacity: 0.7;
        }

        /* Responsive Design */
        @media (max-width: 992px) {
            .features-section .container {
                grid-template-columns: 1fr;
            }

            .features-section .image-column {
                order: 1;
            }

            .features-section .content-column {
                order: 2;
            }

            h1 { font-size: 2rem; }
            h2 { font-size: 1.75rem; }
        }

        @media (max-width: 768px) {
            .site-header nav {
                display: none; /* Hide desktop nav */
            }

            .mobile-nav-toggle {
                display: block; /* Show hamburger */
            }

            .hero h1 {
                font-size: 2.5rem;
            }

            .hero p {
                font-size: 1.1rem;
            }

            .cards-grid {
                grid-template-columns: 1fr;
            }

            .content-section h2, .faq-section h2, .cta-section h2 {
                font-size: 2rem;
            }

            .features-section .content-column h2 {
                text-align: center;
            }

            .features-section .content-column ul {
                padding: 0 var(--spacing-sm);
            }

            .features-section .content-column li::before {
                left: -15px;
            }
        }

        @media (max-width: 576px) {
            .hero {
                min-height: 300px;
                padding: var(--spacing-lg) var(--spacing-md);
            }

            .hero h1 {
                font-size: 2rem;
            }

            .cta-button {
                padding: var(--spacing-sm) var(--spacing-md);
                font-size: 1rem;
            }

            .footer-nav ul {
                justify-content: center;
            }
        }