* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        :root {
            --primary-color: #1a237e;
            --secondary-color: #4a148c;
            --accent-color: #ff6f00;
            --light-bg: #f5f5f5;
            --dark-text: #222;
            --light-text: #fff;
            --gray-border: #ddd;
            --shadow: 0 4px 12px rgba(0,0,0,0.1);
            --transition: all 0.3s ease;
        }
        body {
            background-color: #f9f9f9;
            color: var(--dark-text);
            line-height: 1.7;
            overflow-x: hidden;
        }
        header {
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            color: var(--light-text);
            padding: 1rem 5%;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
        }
        .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: 700;
            letter-spacing: 1px;
            display: flex;
            align-items: center;
        }
        .logo i {
            color: var(--accent-color);
            margin-right: 10px;
        }
        .search-container {
            flex: 1;
            max-width: 400px;
            margin: 0 20px;
        }
        .search-form {
            display: flex;
            background: white;
            border-radius: 30px;
            overflow: hidden;
        }
        .search-form input {
            flex: 1;
            padding: 12px 20px;
            border: none;
            outline: none;
            font-size: 1rem;
        }
        .search-form button {
            background: var(--accent-color);
            color: white;
            border: none;
            padding: 0 20px;
            cursor: pointer;
            transition: var(--transition);
        }
        .search-form button:hover {
            background: #e65100;
        }
        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.5rem;
            cursor: pointer;
        }
        nav {
            background-color: rgba(255, 255, 255, 0.05);
            padding: 0.8rem 5%;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
        }
        .nav-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .nav-links {
            display: flex;
            list-style: none;
        }
        .nav-links li {
            margin-right: 2rem;
            position: relative;
        }
        .nav-links a {
            color: white;
            text-decoration: none;
            font-weight: 500;
            padding: 5px 0;
            transition: var(--transition);
        }
        .nav-links a:hover {
            color: var(--accent-color);
        }
        .nav-links a.active {
            color: var(--accent-color);
            border-bottom: 2px solid var(--accent-color);
        }
        .breadcrumb {
            color: rgba(255, 255, 255, 0.8);
            font-size: 0.9rem;
        }
        .breadcrumb a {
            color: rgba(255, 255, 255, 0.9);
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        main {
            max-width: 1200px;
            margin: 2rem auto;
            padding: 0 20px;
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 30px;
        }
        article {
            background: white;
            border-radius: 10px;
            padding: 2.5rem;
            box-shadow: var(--shadow);
        }
        h1 {
            color: var(--primary-color);
            font-size: 2.5rem;
            margin-bottom: 1rem;
            line-height: 1.3;
        }
        .article-meta {
            color: #666;
            margin-bottom: 2rem;
            padding-bottom: 1rem;
            border-bottom: 1px solid var(--gray-border);
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
        }
        .article-meta span {
            margin-right: 15px;
        }
        .article-meta i {
            color: var(--accent-color);
            margin-right: 5px;
        }
        h2 {
            color: var(--secondary-color);
            margin: 2.5rem 0 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #eee;
            font-size: 1.8rem;
        }
        h3 {
            color: #333;
            margin: 2rem 0 1rem;
            font-size: 1.5rem;
        }
        h4 {
            color: #444;
            margin: 1.5rem 0 0.8rem;
            font-size: 1.2rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        .highlight {
            background-color: #fff8e1;
            border-left: 4px solid var(--accent-color);
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 5px 5px 0;
        }
        .highlight p {
            margin-bottom: 0;
        }
        img {
            max-width: 100%;
            height: auto;
            border-radius: 8px;
            margin: 2rem 0;
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
            display: block;
        }
        .image-caption {
            text-align: center;
            font-style: italic;
            color: #666;
            margin-top: -1.5rem;
            margin-bottom: 2rem;
        }
        ul, ol {
            margin-left: 1.5rem;
            margin-bottom: 1.5rem;
        }
        li {
            margin-bottom: 0.7rem;
        }
        blockquote {
            border-left: 4px solid var(--primary-color);
            padding-left: 1.5rem;
            margin: 2rem 0;
            color: #555;
            font-style: italic;
        }
        .quote-author {
            text-align: right;
            font-weight: bold;
            color: #333;
            margin-top: 0.5rem;
        }
        .content-link {
            color: var(--primary-color);
            text-decoration: none;
            font-weight: 600;
            border-bottom: 1px dotted var(--primary-color);
            transition: var(--transition);
        }
        .content-link:hover {
            color: var(--accent-color);
            border-bottom-style: solid;
        }
        .key-points {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 20px;
            margin: 2.5rem 0;
        }
        .key-point {
            background: #f0f4ff;
            padding: 1.5rem;
            border-radius: 8px;
            border-top: 4px solid var(--primary-color);
        }
        .key-point h4 {
            margin-top: 0;
            color: var(--primary-color);
        }
        .wallpaper-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
            gap: 20px;
            margin: 2rem 0;
        }
        .wallpaper-item {
            border-radius: 8px;
            overflow: hidden;
            box-shadow: 0 3px 10px rgba(0,0,0,0.1);
            transition: var(--transition);
            background: white;
        }
        .wallpaper-item:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0,0,0,0.15);
        }
        .wallpaper-item img {
            margin: 0;
            width: 100%;
            height: 150px;
            object-fit: cover;
        }
        .wallpaper-info {
            padding: 15px;
        }
        .wallpaper-info h4 {
            margin: 0 0 8px;
            font-size: 1rem;
        }
        .download-btn {
            display: inline-block;
            background: var(--accent-color);
            color: white;
            padding: 8px 15px;
            border-radius: 4px;
            text-decoration: none;
            font-weight: 600;
            font-size: 0.9rem;
            transition: var(--transition);
            margin-top: 5px;
        }
        .download-btn:hover {
            background: #e65100;
        }
        aside {
            display: flex;
            flex-direction: column;
            gap: 25px;
        }
        .sidebar-widget {
            background: white;
            border-radius: 10px;
            padding: 1.8rem;
            box-shadow: var(--shadow);
        }
        .widget-title {
            color: var(--primary-color);
            margin-bottom: 1.2rem;
            padding-bottom: 0.7rem;
            border-bottom: 2px solid #eee;
            font-size: 1.3rem;
        }
        .rating-container {
            text-align: center;
            padding: 1rem 0;
        }
        .stars {
            font-size: 1.8rem;
            color: #ffc107;
            margin-bottom: 1rem;
        }
        .stars i {
            cursor: pointer;
            transition: var(--transition);
        }
        .stars i:hover {
            transform: scale(1.2);
        }
        .rating-form textarea {
            width: 100%;
            padding: 12px;
            border: 1px solid var(--gray-border);
            border-radius: 5px;
            margin-bottom: 1rem;
            resize: vertical;
            min-height: 100px;
        }
        .rating-form button {
            background: var(--primary-color);
            color: white;
            border: none;
            padding: 12px 25px;
            border-radius: 5px;
            cursor: pointer;
            font-weight: 600;
            transition: var(--transition);
            width: 100%;
        }
        .rating-form button:hover {
            background: var(--secondary-color);
        }
        .popular-links ul {
            list-style: none;
            margin: 0;
        }
        .popular-links li {
            margin-bottom: 0.8rem;
            padding-bottom: 0.8rem;
            border-bottom: 1px dashed #eee;
        }
        .popular-links a {
            color: #333;
            text-decoration: none;
            transition: var(--transition);
            display: flex;
            align-items: center;
        }
        .popular-links a:hover {
            color: var(--accent-color);
            padding-left: 5px;
        }
        .popular-links i {
            color: var(--primary-color);
            margin-right: 10px;
            font-size: 0.9rem;
        }
        .comments-section {
            margin-top: 3rem;
            padding-top: 2rem;
            border-top: 2px solid #eee;
        }
        .comment-form textarea {
            width: 100%;
            padding: 15px;
            border: 1px solid var(--gray-border);
            border-radius: 5px;
            margin-bottom: 1rem;
            resize: vertical;
            min-height: 120px;
        }
        .comment-form input {
            width: 100%;
            padding: 12px 15px;
            border: 1px solid var(--gray-border);
            border-radius: 5px;
            margin-bottom: 1rem;
        }
        .comment-form button {
            background: var(--primary-color);
            color: white;
            border: none;
            padding: 12px 30px;
            border-radius: 5px;
            cursor: pointer;
            font-weight: 600;
            transition: var(--transition);
        }
        .comment-form button:hover {
            background: var(--secondary-color);
        }
        .comment {
            background: #f9f9f9;
            padding: 1.5rem;
            border-radius: 8px;
            margin-bottom: 1.5rem;
            border-left: 3px solid var(--primary-color);
        }
        .comment-header {
            display: flex;
            justify-content: space-between;
            margin-bottom: 1rem;
            flex-wrap: wrap;
        }
        .comment-author {
            font-weight: 700;
            color: var(--primary-color);
        }
        .comment-date {
            color: #777;
            font-size: 0.9rem;
        }
        .footer-links {
            max-width: 1200px;
            margin: 3rem auto 0;
            padding: 0 20px;
        }
        .web-link {
            background: white;
            margin-bottom: 15px;
            padding: 1rem 1.5rem;
            border-radius: 8px;
            box-shadow: 0 2px 8px rgba(0,0,0,0.05);
            transition: var(--transition);
        }
        .web-link:hover {
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
            transform: translateY(-2px);
        }
        .web-link a {
            color: var(--primary-color);
            text-decoration: none;
            font-weight: 600;
            display: block;
        }
        .web-link a:hover {
            color: var(--accent-color);
        }
        footer {
            background: var(--primary-color);
            color: white;
            padding: 3rem 5% 1.5rem;
            margin-top: 3rem;
        }
        .footer-container {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 30px;
        }
        .footer-col h3 {
            color: white;
            margin-bottom: 1.5rem;
            font-size: 1.3rem;
        }
        .footer-links-list {
            list-style: none;
        }
        .footer-links-list li {
            margin-bottom: 0.8rem;
        }
        .footer-links-list a {
            color: #ddd;
            text-decoration: none;
            transition: var(--transition);
        }
        .footer-links-list a:hover {
            color: var(--accent-color);
            padding-left: 5px;
        }
        .copyright {
            text-align: center;
            margin-top: 3rem;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: #aaa;
            font-size: 0.9rem;
        }
        @media (max-width: 1024px) {
            main {
                grid-template-columns: 1fr;
            }
            .key-points {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 768px) {
            .header-container {
                flex-direction: column;
                align-items: stretch;
            }
            .search-container {
                max-width: 100%;
                margin: 15px 0;
                order: 3;
            }
            .mobile-menu-btn {
                display: block;
                position: absolute;
                right: 20px;
                top: 20px;
            }
            .nav-container {
                flex-direction: column;
                align-items: flex-start;
            }
            .nav-links {
                flex-direction: column;
                width: 100%;
                display: none;
                margin-top: 1rem;
            }
            .nav-links.active {
                display: flex;
            }
            .nav-links li {
                margin-right: 0;
                margin-bottom: 1rem;
                width: 100%;
            }
            .nav-links a {
                display: block;
                padding: 10px 0;
            }
            .breadcrumb {
                margin-top: 1rem;
                width: 100%;
            }
            h1 {
                font-size: 2rem;
            }
            .key-points {
                grid-template-columns: 1fr;
            }
            .wallpaper-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 480px) {
            article {
                padding: 1.5rem;
            }
            .wallpaper-grid {
                grid-template-columns: 1fr;
            }
            .footer-container {
                grid-template-columns: 1fr;
            }
        }
        .text-center { text-align: center; }
        .text-accent { color: var(--accent-color); }
        .font-bold { font-weight: 700; }
        .mt-2 { margin-top: 2rem; }
        .mb-2 { margin-bottom: 2rem; }
        .py-2 { padding-top: 2rem; padding-bottom: 2rem; }