* { 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-color: #f8f9fa;
            max-width: 100vw;
            overflow-x: hidden;
        }
        h1, h2, h3, h4 { color: #2c3e50; font-weight: 700; margin-bottom: 1rem; line-height: 1.3; }
        h1 { font-size: clamp(2.2rem, 5vw, 3.5rem); margin-top: 1.5rem; text-align: center; }
        h2 { font-size: clamp(1.8rem, 4vw, 2.5rem); border-bottom: 3px solid #3498db; padding-bottom: 0.5rem; margin-top: 2.5rem; }
        h3 { font-size: clamp(1.4rem, 3vw, 1.9rem); color: #2980b9; margin-top: 2rem; }
        h4 { font-size: 1.3rem; color: #16a085; margin-top: 1.5rem; }
        p { margin-bottom: 1.5rem; text-align: justify; hyphens: auto; }
        .lead { font-size: 1.25rem; color: #555; font-weight: 300; }
        em { font-style: italic; color: #7f8c8d; }
        strong { color: #e74c3c; font-weight: 700; }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        main.container { padding-top: 2rem; padding-bottom: 3rem; background: #fff; box-shadow: 0 0 25px rgba(0,0,0,0.05); border-radius: 8px; margin-top: 2rem; margin-bottom: 2rem; }
        header { background: linear-gradient(135deg, #1a237e 0%, #283593 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-content { display: flex; justify-content: space-between; align-items: center; }
        .logo a { font-family: 'Arial Black', sans-serif; font-size: 2rem; color: #4fc3f7; text-decoration: none; transition: color 0.3s ease; }
        .logo a:hover { color: #fff; text-shadow: 0 0 8px #4fc3f7; }
        .my-logo::before { content: "▶ "; color: #ff9800; }
        .breadcrumb { padding: 1rem 0; background-color: #eceff1; font-size: 0.9rem; }
        .breadcrumb ol { display: flex; flex-wrap: wrap; list-style: none; }
        .breadcrumb li:not(:last-child)::after { content: "›"; margin: 0 10px; color: #78909c; }
        .breadcrumb a { color: #546e7a; text-decoration: none; }
        .breadcrumb a:hover { color: #1a237e; text-decoration: underline; }
        nav.desktop-nav ul { display: flex; list-style: none; gap: 2rem; }
        nav.desktop-nav a { color: #bbdefb; text-decoration: none; font-weight: 600; padding: 0.5rem 0; transition: all 0.3s; position: relative; }
        nav.desktop-nav a:hover { color: white; }
        nav.desktop-nav a::after { content: ''; position: absolute; bottom: 0; left: 0; width: 0; height: 2px; background: #4fc3f7; transition: width 0.3s; }
        nav.desktop-nav a:hover::after { width: 100%; }
        .hamburger { display: none; font-size: 1.8rem; background: none; border: none; color: white; cursor: pointer; }
        .mobile-nav { display: none; position: absolute; top: 100%; left: 0; width: 100%; background: #283593; flex-direction: column; padding: 1rem; box-shadow: 0 5px 10px rgba(0,0,0,0.2); }
        .mobile-nav.active { display: flex; }
        .mobile-nav a { color: #e3f2fd; padding: 0.8rem; border-bottom: 1px solid #3949ab; text-decoration: none; display: block; }
        .mobile-nav a:hover { background-color: #3949ab; }
        .search-section { background: #e3f2fd; padding: 2rem; border-radius: 10px; margin: 2.5rem 0; text-align: center; }
        .search-form { display: flex; max-width: 600px; margin: 1rem auto; }
        .search-form input { flex-grow: 1; padding: 0.9rem 1.2rem; border: 2px solid #90a4ae; border-radius: 50px 0 0 50px; font-size: 1rem; outline: none; }
        .search-form button { background: linear-gradient(to right, #2196f3, #0d47a1); color: white; border: none; padding: 0 2rem; border-radius: 0 50px 50px 0; cursor: pointer; font-size: 1rem; transition: background 0.3s; }
        .search-form button:hover { background: linear-gradient(to right, #0d47a1, #1565c0); }
        .highlight-box { background: linear-gradient(145deg, #e1f5fe, #f3e5f5); border-left: 5px solid #9c27b0; padding: 1.5rem; margin: 2rem 0; border-radius: 0 10px 10px 0; box-shadow: 3px 3px 10px rgba(0,0,0,0.05); }
        .stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 1.5rem; margin: 2.5rem 0; }
        .stat-card { background: white; padding: 1.5rem; border-radius: 10px; box-shadow: 0 5px 15px rgba(0,0,0,0.05); text-align: center; transition: transform 0.3s, box-shadow 0.3s; border-top: 4px solid #3498db; }
        .stat-card:hover { transform: translateY(-8px); box-shadow: 0 12px 20px rgba(0,0,0,0.1); }
        .stat-card i { font-size: 2.5rem; color: #3498db; margin-bottom: 1rem; }
        .user-interaction { background: #f5f5f5; padding: 2rem; border-radius: 10px; margin: 3rem 0; border: 1px solid #ddd; }
        .rating-form, .comment-form { margin-bottom: 2.5rem; }
        .rating-stars { display: flex; gap: 0.5rem; margin: 1rem 0; direction: rtl; }
        .rating-stars input { display: none; }
        .rating-stars label { font-size: 2rem; color: #ddd; cursor: pointer; transition: color 0.2s; }
        .rating-stars input:checked ~ label,
        .rating-stars label:hover,
        .rating-stars label:hover ~ label { color: #ffc107; }
        .form-group { margin-bottom: 1.5rem; }
        .form-group label { display: block; margin-bottom: 0.5rem; font-weight: 600; }
        .form-group input, .form-group textarea, .form-group select { width: 100%; padding: 0.9rem; border: 1px solid #bdc3c7; border-radius: 5px; font-size: 1rem; }
        .form-group textarea { min-height: 150px; resize: vertical; }
        .submit-btn { background: #2ecc71; color: white; padding: 1rem 2.5rem; border: none; border-radius: 5px; font-size: 1.1rem; cursor: pointer; transition: background 0.3s; }
        .submit-btn:hover { background: #27ae60; }
        .article-image { max-width: 100%; height: auto; border-radius: 10px; box-shadow: 0 8px 20px rgba(0,0,0,0.15); margin: 2.5rem auto; display: block; border: 5px solid white; }
        .img-caption { text-align: center; font-style: italic; color: #7f8c8d; margin-top: 0.5rem; font-size: 0.95rem; }
        .content-link { color: #2980b9; text-decoration: none; border-bottom: 1px dashed #2980b9; transition: all 0.2s; }
        .content-link:hover { color: #e74c3c; border-bottom: 1px solid #e74c3c; background-color: #fff9e6; padding: 2px 0; }
        footer { background: #263238; color: #cfd8dc; padding: 3rem 0 1.5rem; margin-top: 4rem; }
        .footer-content { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 2.5rem; }
        .footer-section h3 { color: #4fc3f7; border-bottom: none; }
        friend-link { display: block; margin: 0.7rem 0; }
        friend-link a { color: #bbdefb; text-decoration: none; }
        friend-link a:hover { color: white; text-decoration: underline; }
        .copyright { text-align: center; padding-top: 2rem; margin-top: 2rem; border-top: 1px solid #37474f; font-size: 0.9rem; color: #90a4ae; }
        @media (max-width: 992px) {
            .header-content { flex-wrap: wrap; }
            nav.desktop-nav { display: none; }
            .hamburger { display: block; }
            .stats-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 768px) {
            h1 { font-size: 2.2rem; }
            .stats-grid { grid-template-columns: 1fr; }
            .search-form { flex-direction: column; }
            .search-form input, .search-form button { border-radius: 50px; width: 100%; }
            .search-form button { margin-top: 1rem; padding: 0.9rem; }
            .footer-content { grid-template-columns: 1fr; }
        }
        @media (max-width: 480px) {
            .container { padding: 0 15px; }
            h2 { font-size: 1.7rem; }
            .stat-card { padding: 1.2rem; }
        }