* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: #333;
            background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
            min-height: 100vh;
        }
        h1, h2, h3, h4 {
            font-family: 'Arial Rounded MT Bold', 'Arial', sans-serif;
            color: #2c3e50;
            margin-bottom: 1.5rem;
            line-height: 1.3;
        }
        h1 {
            font-size: clamp(2rem, 5vw, 3.5rem);
            background: linear-gradient(90deg, #3498db, #2c3e50);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            text-align: center;
            margin-top: 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 3px solid #3498db;
        }
        h2 {
            font-size: clamp(1.5rem, 4vw, 2.5rem);
            color: #2980b9;
            padding-left: 0.5rem;
            border-left: 5px solid #3498db;
            margin-top: 3rem;
        }
        h3 {
            font-size: clamp(1.2rem, 3vw, 1.8rem);
            color: #34495e;
            margin-top: 2rem;
        }
        p {
            margin-bottom: 1.5rem;
            font-size: clamp(1rem, 2vw, 1.1rem);
            text-align: justify;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, #2c3e50 0%, #3498db 100%);
            color: white;
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo {
            font-size: clamp(1.5rem, 4vw, 2.2rem);
            font-weight: bold;
            text-decoration: none;
            color: white;
            display: flex;
            align-items: center;
            gap: 10px;
            transition: transform 0.3s ease;
        }
        .logo:hover {
            transform: scale(1.05);
        }
        .logo i {
            color: #f1c40f;
        }
        .desktop-nav {
            display: flex;
            gap: 2rem;
        }
        .desktop-nav a {
            color: white;
            text-decoration: none;
            font-weight: 500;
            padding: 0.5rem 1rem;
            border-radius: 4px;
            transition: all 0.3s ease;
            position: relative;
        }
        .desktop-nav a:hover {
            background: rgba(255,255,255,0.1);
            transform: translateY(-2px);
        }
        .desktop-nav a::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 2px;
            background: #f1c40f;
            transition: width 0.3s ease;
        }
        .desktop-nav a:hover::after {
            width: 80%;
        }
        .hamburger {
            display: none;
            font-size: 1.5rem;
            background: none;
            border: none;
            color: white;
            cursor: pointer;
            padding: 0.5rem;
        }
        .mobile-nav {
            display: none;
            position: absolute;
            top: 100%;
            left: 0;
            width: 100%;
            background: #2c3e50;
            padding: 1rem;
            flex-direction: column;
            gap: 1rem;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
        }
        .mobile-nav.active {
            display: flex;
        }
        .mobile-nav a {
            color: white;
            text-decoration: none;
            padding: 0.8rem;
            border-radius: 4px;
            transition: background 0.3s ease;
        }
        .mobile-nav a:hover {
            background: rgba(255,255,255,0.1);
        }
        .breadcrumb {
            background: #ecf0f1;
            padding: 1rem 0;
            margin-bottom: 2rem;
            border-radius: 8px;
            box-shadow: 0 2px 4px rgba(0,0,0,0.05);
        }
        .breadcrumb ol {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
            gap: 0.5rem;
        }
        .breadcrumb li {
            display: flex;
            align-items: center;
        }
        .breadcrumb a {
            color: #3498db;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        .breadcrumb a:hover {
            color: #2980b9;
            text-decoration: underline;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '›';
            margin-left: 0.5rem;
            color: #7f8c8d;
        }
        main {
            background: white;
            border-radius: 12px;
            box-shadow: 0 6px 20px rgba(0,0,0,0.1);
            padding: 2rem;
            margin: 2rem auto;
            position: relative;
            overflow: hidden;
        }
        main::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 5px;
            background: linear-gradient(90deg, #3498db, #2c3e50, #f1c40f);
        }
        .article-section {
            margin-bottom: 3rem;
            padding: 1.5rem;
            background: #f8f9fa;
            border-radius: 8px;
            border-left: 4px solid #3498db;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        .article-section:hover {
            transform: translateY(-5px);
            box-shadow: 0 8px 16px rgba(52, 152, 219, 0.15);
        }
        .feature-image {
            width: 100%;
            max-height: 500px;
            object-fit: cover;
            border-radius: 12px;
            margin: 2rem 0;
            box-shadow: 0 4px 12px rgba(0,0,0,0.15);
            transition: transform 0.3s ease;
        }
        .feature-image:hover {
            transform: scale(1.01);
        }
        .highlight {
            background: linear-gradient(120deg, #f1c40f20 0%, #f1c40f20 100%);
            padding: 1.5rem;
            border-radius: 8px;
            border-left: 4px solid #f1c40f;
            margin: 2rem 0;
        }
        .tip-box {
            background: #e8f4fc;
            border-left: 4px solid #3498db;
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 8px 8px 0;
        }
        .stat-box {
            background: linear-gradient(135deg, #2c3e50 0%, #3498db 100%);
            color: white;
            padding: 2rem;
            border-radius: 12px;
            text-align: center;
            margin: 2rem 0;
            box-shadow: 0 6px 12px rgba(44, 62, 80, 0.2);
        }
        .stat-number {
            font-size: 3rem;
            font-weight: bold;
            color: #f1c40f;
            display: block;
        }
        .interactive-features {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
            margin: 3rem 0;
        }
        .feature-card {
            background: white;
            border-radius: 12px;
            padding: 2rem;
            box-shadow: 0 4px 12px rgba(0,0,0,0.08);
            transition: all 0.3s ease;
            border: 2px solid transparent;
            text-align: center;
        }
        .feature-card:hover {
            transform: translateY(-10px);
            border-color: #3498db;
            box-shadow: 0 8px 20px rgba(52, 152, 219, 0.2);
        }
        .feature-icon {
            font-size: 3rem;
            color: #3498db;
            margin-bottom: 1rem;
        }
        .search-box, .comment-form, .rating-form {
            background: #f8f9fa;
            padding: 2rem;
            border-radius: 12px;
            margin: 3rem 0;
            border: 2px solid #e9ecef;
        }
        .form-group {
            margin-bottom: 1.5rem;
        }
        .form-group label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
            color: #2c3e50;
        }
        .form-control {
            width: 100%;
            padding: 1rem;
            border: 2px solid #ddd;
            border-radius: 8px;
            font-size: 1rem;
            transition: border-color 0.3s ease;
        }
        .form-control:focus {
            outline: none;
            border-color: #3498db;
            box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
        }
        .btn {
            background: linear-gradient(135deg, #3498db 0%, #2980b9 100%);
            color: white;
            border: none;
            padding: 1rem 2rem;
            border-radius: 8px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
        }
        .btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 12px rgba(52, 152, 219, 0.3);
            background: linear-gradient(135deg, #2980b9 0%, #3498db 100%);
        }
        .btn-rating {
            background: #f1c40f;
            color: #2c3e50;
        }
        .btn-rating:hover {
            background: #f39c12;
        }
        .stars {
            display: flex;
            gap: 0.5rem;
            margin: 1rem 0;
            justify-content: center;
        }
        .star {
            font-size: 2rem;
            color: #ddd;
            cursor: pointer;
            transition: color 0.3s ease;
        }
        .star.active,
        .star:hover {
            color: #f1c40f;
        }
        .web-links {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 1rem;
            margin: 3rem 0;
        }
        .web-link {
            background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
            padding: 1.2rem;
            border-radius: 8px;
            text-align: center;
            transition: all 0.3s ease;
            border: 2px solid transparent;
        }
        .web-link:hover {
            transform: translateY(-3px);
            border-color: #3498db;
            box-shadow: 0 4px 12px rgba(52, 152, 219, 0.15);
        }
        .web-link a {
            color: #2c3e50;
            text-decoration: none;
            font-weight: 500;
            display: block;
            transition: color 0.3s ease;
        }
        .web-link:hover a {
            color: #3498db;
        }
        footer {
            background: linear-gradient(135deg, #2c3e50 0%, #1a252f 100%);
            color: white;
            padding: 3rem 0 1.5rem;
            margin-top: 4rem;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 3rem;
            margin-bottom: 2rem;
        }
        .footer-section h4 {
            color: #f1c40f;
            margin-bottom: 1.5rem;
            font-size: 1.3rem;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 0.8rem;
        }
        .footer-links a {
            color: #bdc3c7;
            text-decoration: none;
            transition: color 0.3s ease;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .footer-links a:hover {
            color: #3498db;
            transform: translateX(5px);
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(255,255,255,0.1);
            color: #95a5a6;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            .desktop-nav {
                display: none;
            }
            .hamburger {
                display: block;
            }
            .header-container {
                flex-wrap: wrap;
            }
            .interactive-features {
                grid-template-columns: 1fr;
            }
            .feature-card {
                padding: 1.5rem;
            }
            .web-links {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-container {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 15px;
            }
            main {
                padding: 1rem;
            }
            .web-links {
                grid-template-columns: 1fr;
            }
            .btn {
                width: 100%;
            }
        }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .article-section {
            animation: fadeIn 0.6s ease-out;
        }
        @media print {
            header, footer, .interactive-features, .search-box, .comment-form, .rating-form {
                display: none;
            }
            body {
                background: white;
                color: black;
            }
            main {
                box-shadow: none;
                margin: 0;
                padding: 0;
            }
        }