* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        :root {
            --primary: #1e3a8a;
            --secondary: #dc2626;
            --accent: #059669;
            --light: #f8fafc;
            --dark: #0f172a;
            --gray: #64748b;
            --transition: all 0.3s ease;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            color: var(--dark);
            background: linear-gradient(135deg, #f1f5f9 0%, #e2e8f0 100%);
            min-height: 100vh;
        }
        header {
            background: var(--primary);
            color: white;
            padding: 1rem 5%;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }
        .logo a {
            color: white;
            text-decoration: none;
            font-size: 1.8rem;
            font-weight: 800;
            letter-spacing: 1px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo i {
            color: var(--secondary);
        }
        .desktop-nav ul {
            display: flex;
            gap: 2rem;
            list-style: none;
        }
        .desktop-nav a {
            color: white;
            text-decoration: none;
            font-weight: 600;
            padding: 0.5rem 1rem;
            border-radius: 4px;
            transition: var(--transition);
        }
        .desktop-nav a:hover {
            background: rgba(255,255,255,0.15);
            transform: translateY(-2px);
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.5rem;
            cursor: pointer;
        }
        .mobile-nav {
            display: none;
            width: 100%;
            background: var(--dark);
            padding: 1rem;
            margin-top: 1rem;
            border-radius: 8px;
        }
        .mobile-nav.active {
            display: block;
        }
        .mobile-nav ul {
            list-style: none;
        }
        .mobile-nav li {
            margin: 0.8rem 0;
        }
        .mobile-nav a {
            color: white;
            text-decoration: none;
            display: block;
            padding: 0.8rem;
            border-radius: 4px;
        }
        .mobile-nav a:hover {
            background: var(--primary);
        }
        .breadcrumb {
            padding: 1rem 5%;
            background: white;
            border-bottom: 1px solid #e2e8f0;
        }
        .breadcrumb ul {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
            gap: 0.5rem;
        }
        .breadcrumb a {
            color: var(--primary);
            text-decoration: none;
        }
        .breadcrumb li:not(:last-child)::after {
            content: "›";
            margin-left: 0.5rem;
            color: var(--gray);
        }
        main {
            padding: 2rem 5%;
            max-width: 1200px;
            margin: 0 auto;
        }
        .article-header {
            text-align: center;
            margin-bottom: 3rem;
            padding-bottom: 2rem;
            border-bottom: 3px solid var(--accent);
        }
        h1 {
            font-size: clamp(2rem, 4vw, 3rem);
            color: var(--primary);
            margin-bottom: 1rem;
            line-height: 1.2;
        }
        .article-meta {
            display: flex;
            justify-content: center;
            gap: 2rem;
            color: var(--gray);
            font-size: 0.9rem;
            flex-wrap: wrap;
        }
        .content-section {
            background: white;
            padding: 2.5rem;
            margin-bottom: 2rem;
            border-radius: 12px;
            box-shadow: 0 6px 20px rgba(0,0,0,0.08);
            transition: var(--transition);
        }
        .content-section:hover {
            transform: translateY(-5px);
            box-shadow: 0 12px 25px rgba(0,0,0,0.12);
        }
        h2, h3 {
            color: var(--primary);
            margin: 1.5rem 0 1rem;
        }
        h2 {
            font-size: 1.8rem;
            border-left: 4px solid var(--secondary);
            padding-left: 1rem;
        }
        h3 {
            font-size: 1.4rem;
            color: var(--accent);
        }
        p {
            margin-bottom: 1.2rem;
            font-size: 1.05rem;
            text-align: justify;
        }
        .highlight {
            background: linear-gradient(120deg, #f0f9ff 0%, #e0f2fe 100%);
            border-left: 4px solid var(--primary);
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 8px 8px 0;
        }
        .article-image {
            width: 100%;
            max-width: 800px;
            margin: 2rem auto;
            display: block;
            border-radius: 12px;
            box-shadow: 0 8px 25px rgba(0,0,0,0.15);
            transition: var(--transition);
        }
        .article-image:hover {
            transform: scale(1.01);
        }
        .interactive-section {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
            margin: 3rem 0;
        }
        .feature-card {
            background: white;
            padding: 2rem;
            border-radius: 10px;
            box-shadow: 0 4px 15px rgba(0,0,0,0.08);
            text-align: center;
        }
        .feature-card i {
            font-size: 2.5rem;
            color: var(--primary);
            margin-bottom: 1rem;
        }
        .search-box, .comment-form, .rating-form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
            margin-top: 1rem;
        }
        input, textarea, select {
            padding: 0.8rem;
            border: 2px solid #cbd5e1;
            border-radius: 6px;
            font-family: inherit;
            transition: var(--transition);
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(30, 58, 138, 0.1);
        }
        button, .btn {
            background: var(--primary);
            color: white;
            border: none;
            padding: 0.8rem 1.5rem;
            border-radius: 6px;
            cursor: pointer;
            font-weight: 600;
            transition: var(--transition);
            text-decoration: none;
            display: inline-block;
            text-align: center;
        }
        button:hover, .btn:hover {
            background: var(--secondary);
            transform: translateY(-2px);
        }
        .stars {
            display: flex;
            justify-content: center;
            gap: 0.5rem;
            margin: 1rem 0;
        }
        .star {
            color: #e2e8f0;
            cursor: pointer;
            font-size: 1.5rem;
            transition: var(--transition);
        }
        .star:hover, .star.active {
            color: #fbbf24;
        }
        .internal-links {
            background: var(--light);
            padding: 2rem;
            border-radius: 10px;
            margin: 2rem 0;
        }
        .web-link {
            display: inline-block;
            margin: 0.5rem;
            padding: 0.5rem 1rem;
            background: white;
            border-radius: 20px;
            box-shadow: 0 3px 8px rgba(0,0,0,0.05);
            transition: var(--transition);
        }
        .web-link a {
            color: var(--primary);
            text-decoration: none;
            font-weight: 500;
        }
        .web-link:hover {
            transform: translateY(-3px);
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
        }
        footer {
            background: var(--dark);
            color: white;
            padding: 3rem 5% 1rem;
            margin-top: 4rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-section h3 {
            color: white;
            border-left: none;
            padding-left: 0;
            margin-bottom: 1.5rem;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 0.8rem;
        }
        .footer-links a {
            color: #cbd5e1;
            text-decoration: none;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: white;
            padding-left: 5px;
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            border-top: 1px solid #334155;
            color: #94a3b8;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            .desktop-nav {
                display: none;
            }
            .hamburger {
                display: block;
            }
            .content-section {
                padding: 1.5rem;
            }
            .interactive-section {
                grid-template-columns: 1fr;
            }
            .article-meta {
                flex-direction: column;
                align-items: center;
                gap: 0.5rem;
            }
            .header-container {
                flex-direction: column;
                align-items: flex-start;
            }
            .logo {
                margin-bottom: 1rem;
            }
        }
        @media print {
            .interactive-section, .mobile-nav, .hamburger, footer {
                display: none;
            }
            .content-section {
                box-shadow: none;
                border: 1px solid #ddd;
            }
        }