* { 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: #2d3748;
            background-color: #f8f9fa;
            max-width: 100vw;
            overflow-x: hidden;
        }
        a { color: #3182ce; text-decoration: none; transition: color 0.3s ease; }
        a:hover { color: #2c5282; }
        img { max-width: 100%; height: auto; display: block; }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(135deg, #1a365d 0%, #2d3748 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-size: 2.2rem;
            font-weight: 800;
            color: #fff;
            text-transform: uppercase;
            letter-spacing: 1px;
            font-family: 'Trebuchet MS', sans-serif;
            background: linear-gradient(90deg, #63b3ed, #fbd38d);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .logo a:hover { opacity: 0.9; }
        .desktop-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .desktop-nav a {
            color: #e2e8f0;
            font-weight: 600;
            padding: 0.5rem 0.75rem;
            border-radius: 4px;
            font-size: 1.05rem;
        }
        .desktop-nav a:hover, .desktop-nav a.active {
            background-color: rgba(66, 153, 225, 0.2);
            color: #90cdf4;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 0.5rem;
        }
        .mobile-nav {
            display: none;
            background-color: #2d3748;
            position: absolute;
            top: 100%;
            left: 0;
            width: 100%;
            padding: 1rem;
            box-shadow: 0 5px 15px rgba(0,0,0,0.2);
        }
        .mobile-nav.active { display: block; }
        .mobile-nav ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .mobile-nav a {
            color: #cbd5e0;
            display: block;
            padding: 0.75rem;
            border-bottom: 1px solid #4a5568;
            font-weight: 600;
        }
        .mobile-nav a:hover { color: #63b3ed; background-color: #4a5568; }
        .breadcrumb {
            background-color: #edf2f7;
            padding: 0.8rem 0;
            font-size: 0.9rem;
        }
        .breadcrumb ol {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
            gap: 0.5rem;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '›';
            margin-left: 0.5rem;
            color: #718096;
        }
        .breadcrumb a { color: #4a5568; }
        .breadcrumb a:hover { text-decoration: underline; }
        .main-wrapper {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
            padding: 2.5rem 0;
        }
        @media (max-width: 992px) {
            .main-wrapper { grid-template-columns: 1fr; }
        }
        .article-content {
            background-color: white;
            border-radius: 12px;
            padding: 2.5rem;
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.05);
        }
        .article-header { margin-bottom: 2.5rem; }
        .article-title {
            font-size: 2.8rem;
            color: #1a202c;
            line-height: 1.2;
            margin-bottom: 1rem;
            border-bottom: 3px solid #e2e8f0;
            padding-bottom: 1rem;
        }
        .article-meta {
            display: flex;
            gap: 1.5rem;
            color: #718096;
            font-size: 0.95rem;
            margin-bottom: 1rem;
        }
        .article-meta i { margin-right: 0.5rem; }
        .intro-box {
            background: linear-gradient(to right, #ebf8ff, #fed7d7);
            border-left: 5px solid #4299e1;
            padding: 1.5rem;
            border-radius: 8px;
            margin: 2rem 0;
            font-size: 1.1rem;
            color: #2d3748;
        }
        .intro-box strong { color: #c53030; }
        .section-title {
            font-size: 1.9rem;
            color: #2d3748;
            margin: 2.5rem 0 1.5rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px dashed #cbd5e0;
        }
        .subsection-title {
            font-size: 1.5rem;
            color: #4a5568;
            margin: 2rem 0 1rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
            font-size: 1.1rem;
            color: #4a5568;
        }
        .highlight {
            background-color: #fffacd;
            padding: 0.2rem 0.4rem;
            border-radius: 3px;
            font-weight: 600;
        }
        .featured-image {
            margin: 2.5rem auto;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
            max-width: 800px;
        }
        .image-caption {
            text-align: center;
            font-style: italic;
            color: #718096;
            padding: 0.8rem;
            background-color: #f7fafc;
            font-size: 0.95rem;
        }
        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            margin: 2rem 0;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            border-radius: 8px;
            overflow: hidden;
        }
        .comparison-table th, .comparison-table td {
            border: 1px solid #e2e8f0;
            padding: 1rem;
            text-align: left;
        }
        .comparison-table thead {
            background-color: #4299e1;
            color: white;
        }
        .comparison-table tbody tr:nth-child(even) {
            background-color: #f7fafc;
        }
        .comparison-table tbody tr:hover {
            background-color: #ebf8ff;
        }
        .stats-box {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 1.5rem;
            margin: 2.5rem 0;
        }
        .stat-card {
            background: linear-gradient(145deg, #ffffff, #f1f5f9);
            border-radius: 10px;
            padding: 1.5rem;
            text-align: center;
            box-shadow: 0 4px 6px rgba(0,0,0,0.05);
            border-top: 5px solid #4299e1;
        }
        .stat-number {
            font-size: 2.5rem;
            font-weight: 800;
            color: #2d3748;
            display: block;
            line-height: 1;
        }
        .stat-label {
            font-size: 1rem;
            color: #718096;
            margin-top: 0.5rem;
        }
        blockquote {
            border-left: 5px solid #ecc94b;
            background-color: #fefcbf;
            padding: 1.5rem 2rem;
            margin: 2.5rem 0;
            border-radius: 0 8px 8px 0;
            font-style: italic;
            color: #744210;
        }
        blockquote cite {
            display: block;
            margin-top: 1rem;
            font-weight: 600;
            color: #d69e2e;
        }
        .tips-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 1.5rem;
            margin: 2rem 0;
        }
        .tip-card {
            background: white;
            border-radius: 10px;
            padding: 1.5rem;
            box-shadow: 0 4px 12px rgba(0,0,0,0.06);
            border-top: 4px solid #48bb78;
            transition: transform 0.3s ease;
        }
        .tip-card:hover {
            transform: translateY(-5px);
        }
        .tip-icon {
            font-size: 2rem;
            color: #48bb78;
            margin-bottom: 1rem;
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }
        .sidebar-widget {
            background-color: white;
            border-radius: 10px;
            padding: 1.8rem;
            box-shadow: 0 4px 12px rgba(0,0,0,0.05);
        }
        .widget-title {
            font-size: 1.4rem;
            color: #2d3748;
            margin-bottom: 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #e2e8f0;
        }
        .search-form {
            display: flex;
        }
        .search-form input {
            flex-grow: 1;
            padding: 0.9rem 1rem;
            border: 2px solid #cbd5e0;
            border-right: none;
            border-radius: 6px 0 0 6px;
            font-size: 1rem;
            outline: none;
        }
        .search-form input:focus {
            border-color: #4299e1;
        }
        .search-form button {
            background-color: #4299e1;
            color: white;
            border: none;
            padding: 0 1.5rem;
            border-radius: 0 6px 6px 0;
            cursor: pointer;
            font-size: 1.1rem;
            transition: background 0.3s ease;
        }
        .search-form button:hover {
            background-color: #3182ce;
        }
        .rating-widget .stars {
            display: flex;
            justify-content: center;
            gap: 0.5rem;
            margin-bottom: 1.5rem;
            font-size: 2rem;
            color: #e2e8f0;
            cursor: pointer;
        }
        .rating-widget .stars .star:hover,
        .rating-widget .stars .star.active {
            color: #f6e05e;
        }
        .rating-form input, .rating-form textarea {
            width: 100%;
            padding: 0.8rem;
            margin-bottom: 1rem;
            border: 1px solid #cbd5e0;
            border-radius: 6px;
            font-size: 1rem;
        }
        .rating-form button {
            width: 100%;
            padding: 0.9rem;
            background-color: #38a169;
            color: white;
            border: none;
            border-radius: 6px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.3s ease;
        }
        .rating-form button:hover {
            background-color: #2f855a;
        }
        .popular-links ul {
            list-style: none;
        }
        .popular-links li {
            margin-bottom: 0.9rem;
            padding-bottom: 0.9rem;
            border-bottom: 1px dotted #e2e8f0;
        }
        .popular-links a {
            color: #4a5568;
            display: flex;
            align-items: center;
            gap: 0.8rem;
        }
        .popular-links a:hover {
            color: #3182ce;
        }
        .popular-links i {
            color: #4299e1;
        }
        .comments-section {
            background-color: white;
            border-radius: 12px;
            padding: 2.5rem;
            margin-top: 2rem;
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.05);
        }
        .comment-form input, .comment-form textarea {
            width: 100%;
            padding: 1rem;
            margin-bottom: 1.2rem;
            border: 1px solid #cbd5e0;
            border-radius: 8px;
            font-size: 1rem;
            transition: border 0.3s;
        }
        .comment-form input:focus, .comment-form textarea:focus {
            border-color: #4299e1;
            outline: none;
            box-shadow: 0 0 0 3px rgba(66, 153, 225, 0.2);
        }
        .comment-form button {
            padding: 1rem 2.5rem;
            background-color: #2d3748;
            color: white;
            border: none;
            border-radius: 8px;
            font-weight: 600;
            font-size: 1.05rem;
            cursor: pointer;
            transition: background 0.3s;
        }
        .comment-form button:hover {
            background-color: #1a202c;
        }
        .comment-list {
            margin-top: 2.5rem;
        }
        .comment-item {
            border-bottom: 1px solid #e2e8f0;
            padding: 1.5rem 0;
            display: flex;
            gap: 1.5rem;
        }
        .comment-avatar {
            width: 60px;
            height: 60px;
            border-radius: 50%;
            background-color: #cbd5e0;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.8rem;
            color: #718096;
            flex-shrink: 0;
        }
        .comment-body h4 {
            color: #2d3748;
            margin-bottom: 0.5rem;
        }
        .comment-date {
            color: #a0aec0;
            font-size: 0.9rem;
            margin-bottom: 0.8rem;
        }
        .footer-links {
            background-color: #2d3748;
            padding: 2.5rem 0;
            margin-top: 3rem;
        }
        .web-link {
            background-color: #4a5568;
            margin-bottom: 1rem;
            padding: 1.2rem 1.5rem;
            border-radius: 8px;
            transition: background 0.3s;
        }
        .web-link:hover {
            background-color: #5a6578;
        }
        .web-link a {
            color: #e2e8f0;
            font-size: 1.1rem;
            display: block;
            text-align: center;
        }
        .web-link a:hover {
            color: #90cdf4;
        }
        .links-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 1rem;
        }
        .site-footer {
            background-color: #1a202c;
            color: #cbd5e0;
            padding: 3rem 0 1.5rem;
            text-align: center;
        }
        .footer-logo {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 1.5rem;
            color: white;
        }
        .copyright {
            margin-top: 2rem;
            padding-top: 1.5rem;
            border-top: 1px solid #4a5568;
            font-size: 0.95rem;
            color: #a0aec0;
        }
        @media (max-width: 768px) {
            .desktop-nav { display: none; }
            .hamburger { display: block; }
            .article-title { font-size: 2.2rem; }
            .article-content, .sidebar-widget, .comments-section { padding: 1.8rem; }
            .main-wrapper { padding: 1.5rem 0; }
            .stats-box { grid-template-columns: 1fr; }
            .tips-grid { grid-template-columns: 1fr; }
            .comparison-table { display: block; overflow-x: auto; }
        }