:root {
            --primary-color: #1e40af;
            --secondary-color: #dc2626;
            --accent-color: #fbbf24;
            --dark-bg: #0f172a;
            --light-bg: #f8fafc;
            --text-dark: #1e293b;
            --text-light: #cbd5e1;
            --card-bg: #ffffff;
            --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
            --radius: 8px;
            --transition: all 0.3s ease;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            background-color: var(--light-bg);
            color: var(--text-dark);
            line-height: 1.7;
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }
        ul {
            list-style: none;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background-color: var(--dark-bg);
            color: white;
            padding: 1rem 0;
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo a {
            font-size: 2rem;
            font-weight: 800;
            color: var(--accent-color);
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        .logo span {
            color: white;
        }
        .desktop-nav ul {
            display: flex;
            gap: 2rem;
        }
        .desktop-nav a {
            font-weight: 600;
            padding: 0.5rem 0;
            position: relative;
        }
        .desktop-nav a:hover {
            color: var(--accent-color);
        }
        .desktop-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background-color: var(--accent-color);
            transition: var(--transition);
        }
        .desktop-nav a:hover::after {
            width: 100%;
        }
        .breadcrumb {
            background-color: #e2e8f0;
            padding: 0.8rem 0;
            font-size: 0.9rem;
        }
        .breadcrumb ol {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '/';
            margin-left: 0.5rem;
            color: #64748b;
        }
        .breadcrumb a:hover {
            color: var(--primary-color);
            text-decoration: underline;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            background: none;
            border: none;
            color: white;
        }
        .mobile-nav {
            position: fixed;
            top: 0;
            right: -100%;
            height: 100vh;
            width: 280px;
            background-color: var(--dark-bg);
            padding: 2rem;
            transition: var(--transition);
            z-index: 1001;
            overflow-y: auto;
            box-shadow: -5px 0 15px rgba(0,0,0,0.2);
        }
        .mobile-nav.active {
            right: 0;
        }
        .mobile-nav-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 2rem;
            padding-bottom: 1rem;
            border-bottom: 1px solid #334155;
        }
        .close-menu {
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
        }
        .mobile-nav ul {
            display: flex;
            flex-direction: column;
            gap: 1.2rem;
        }
        .mobile-nav a {
            font-size: 1.1rem;
            padding: 0.5rem 0;
            display: block;
            border-bottom: 1px solid #334155;
        }
        .mobile-nav a:hover {
            color: var(--accent-color);
            padding-left: 0.5rem;
        }
        main {
            flex: 1;
            padding: 2rem 0;
        }
        .article-header {
            text-align: center;
            margin-bottom: 3rem;
            padding: 2rem;
            background: linear-gradient(135deg, var(--primary-color), var(--dark-bg));
            color: white;
            border-radius: var(--radius);
        }
        .article-header h1 {
            font-size: 2.8rem;
            margin-bottom: 1rem;
            line-height: 1.2;
        }
        .article-meta {
            display: flex;
            justify-content: center;
            gap: 1.5rem;
            flex-wrap: wrap;
            font-size: 0.95rem;
            color: var(--text-light);
        }
        .article-meta span {
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .content-section {
            background-color: var(--card-bg);
            padding: 2.5rem;
            margin-bottom: 2.5rem;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            transition: var(--transition);
        }
        .content-section:hover {
            box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
        }
        .content-section h2 {
            color: var(--primary-color);
            font-size: 2rem;
            margin-bottom: 1.5rem;
            padding-bottom: 0.5rem;
            border-bottom: 3px solid var(--accent-color);
        }
        .content-section h3 {
            color: var(--secondary-color);
            font-size: 1.5rem;
            margin: 1.8rem 0 1rem;
        }
        .content-section p {
            margin-bottom: 1.2rem;
            text-align: justify;
        }
        .highlight {
            background-color: #fef3c7;
            border-left: 4px solid var(--accent-color);
            padding: 1.5rem;
            margin: 1.5rem 0;
            font-style: italic;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 1.5rem;
            margin: 2rem 0;
        }
        .stat-card {
            background: #eff6ff;
            padding: 1.5rem;
            border-radius: var(--radius);
            text-align: center;
            border-top: 4px solid var(--primary-color);
        }
        .stat-card i {
            font-size: 2.5rem;
            color: var(--primary-color);
            margin-bottom: 1rem;
        }
        .stat-number {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--dark-bg);
            display: block;
        }
        .stat-label {
            font-size: 1rem;
            color: #475569;
        }
        .featured-image {
            margin: 2.5rem auto;
            max-width: 800px;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: 0 10px 25px rgba(0,0,0,0.1);
        }
        .featured-image figcaption {
            text-align: center;
            font-style: italic;
            padding: 0.8rem;
            background-color: #f1f5f9;
            color: #64748b;
        }
        .interactive-section {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
            margin: 3rem 0;
        }
        .interactive-card {
            background: var(--card-bg);
            padding: 2rem;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            text-align: center;
        }
        .interactive-card h3 {
            color: var(--primary-color);
            margin-bottom: 1.5rem;
            font-size: 1.6rem;
        }
        .form-group {
            margin-bottom: 1.2rem;
            text-align: left;
        }
        .form-group label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
            color: var(--text-dark);
        }
        .form-control {
            width: 100%;
            padding: 0.8rem 1rem;
            border: 1px solid #cbd5e1;
            border-radius: var(--radius);
            font-size: 1rem;
            transition: var(--transition);
        }
        .form-control:focus {
            outline: none;
            border-color: var(--primary-color);
            box-shadow: 0 0 0 3px rgba(30, 64, 175, 0.1);
        }
        .btn {
            display: inline-block;
            background-color: var(--primary-color);
            color: white;
            padding: 0.9rem 2rem;
            border: none;
            border-radius: var(--radius);
            font-weight: 700;
            cursor: pointer;
            transition: var(--transition);
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }
        .btn:hover {
            background-color: var(--secondary-color);
            transform: translateY(-3px);
        }
        .star-rating {
            display: flex;
            justify-content: center;
            gap: 0.5rem;
            margin: 1rem 0;
            font-size: 1.8rem;
            color: #d1d5db;
            cursor: pointer;
        }
        .star-rating .star {
            transition: var(--transition);
        }
        .star-rating .star:hover,
        .star-rating .star.active {
            color: var(--accent-color);
        }
        .footer-links {
            background-color: #1e293b;
            padding: 3rem 0;
            color: var(--text-light);
        }
        .web-link {
            background-color: #334155;
            padding: 1.2rem;
            margin-bottom: 1rem;
            border-radius: var(--radius);
            transition: var(--transition);
        }
        .web-link:hover {
            background-color: #475569;
            transform: translateX(5px);
        }
        .web-link a {
            color: #e2e8f0;
            display: block;
            font-weight: 600;
        }
        .web-link a:hover {
            color: var(--accent-color);
        }
        footer {
            background-color: var(--dark-bg);
            color: var(--text-light);
            text-align: center;
            padding: 2rem 0;
        }
        .copyright {
            font-size: 0.9rem;
            opacity: 0.8;
        }
        @media (max-width: 992px) {
            .desktop-nav {
                display: none;
            }
            .hamburger {
                display: block;
            }
            .article-header h1 {
                font-size: 2.2rem;
            }
            .content-section {
                padding: 2rem;
            }
            .interactive-section {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 15px;
            }
            .article-header h1 {
                font-size: 1.9rem;
            }
            .content-section h2 {
                font-size: 1.7rem;
            }
            .content-section h3 {
                font-size: 1.3rem;
            }
            .stats-grid {
                grid-template-columns: 1fr;
            }
            .article-meta {
                flex-direction: column;
                align-items: center;
                gap: 0.8rem;
            }
        }