* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        :root {
            --primary: #2c3e50;
            --secondary: #3498db;
            --accent: #e74c3c;
            --light: #ecf0f1;
            --dark: #2c3e50;
            --success: #27ae60;
            --warning: #f39c12;
            --text: #333;
            --text-light: #7f8c8d;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            --transition: all 0.3s ease;
            --border-radius: 8px;
            --container-width: 1200px;
        }
        body {
            color: var(--text);
            line-height: 1.8;
            background-color: #f9f9f9;
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }
        header {
            background: linear-gradient(135deg, var(--primary), #1a2530);
            color: white;
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            max-width: var(--container-width);
            margin: 0 auto;
            padding: 0 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }
        .logo {
            font-size: 2.2rem;
            font-weight: 800;
            text-decoration: none;
            color: white;
            padding: 20px 0;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo span {
            color: var(--secondary);
        }
        .logo i {
            color: var(--accent);
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 10px;
        }
        nav ul {
            display: flex;
            list-style: none;
            gap: 25px;
        }
        nav a {
            color: white;
            text-decoration: none;
            font-weight: 600;
            font-size: 1.1rem;
            padding: 8px 15px;
            border-radius: var(--border-radius);
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        nav a:hover, nav a.active {
            background-color: rgba(255, 255, 255, 0.15);
            color: var(--secondary);
        }
        .breadcrumb {
            background-color: #f1f5f9;
            padding: 15px 0;
            border-bottom: 1px solid #e2e8f0;
        }
        .breadcrumb-container {
            max-width: var(--container-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        .breadcrumb a {
            color: var(--secondary);
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        main {
            flex: 1;
            max-width: var(--container-width);
            margin: 30px auto;
            padding: 0 20px;
            width: 100%;
        }
        .content-container {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
        }
        article {
            background-color: white;
            border-radius: var(--border-radius);
            padding: 40px;
            box-shadow: var(--shadow);
        }
        h1 {
            color: var(--primary);
            font-size: 2.8rem;
            margin-bottom: 25px;
            line-height: 1.3;
            border-bottom: 3px solid var(--secondary);
            padding-bottom: 15px;
        }
        h2 {
            color: var(--primary);
            font-size: 2rem;
            margin: 40px 0 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--light);
        }
        h3 {
            color: var(--secondary);
            font-size: 1.6rem;
            margin: 30px 0 15px;
        }
        h4 {
            color: var(--dark);
            font-size: 1.3rem;
            margin: 25px 0 12px;
        }
        p {
            margin-bottom: 25px;
            font-size: 1.1rem;
        }
        .lead {
            font-size: 1.3rem;
            color: var(--primary);
            font-weight: 600;
            background-color: #f0f7ff;
            padding: 20px;
            border-left: 5px solid var(--secondary);
            border-radius: var(--border-radius);
            margin-bottom: 30px;
        }
        .highlight {
            background-color: #fff8e1;
            padding: 25px;
            border-radius: var(--border-radius);
            border-left: 5px solid var(--warning);
            margin: 30px 0;
        }
        .stat-box {
            background: linear-gradient(135deg, var(--secondary), #2980b9);
            color: white;
            padding: 25px;
            border-radius: var(--border-radius);
            text-align: center;
            margin: 30px 0;
            box-shadow: var(--shadow);
        }
        .stat-number {
            font-size: 3.5rem;
            font-weight: 800;
            display: block;
            line-height: 1;
        }
        .stat-text {
            font-size: 1.2rem;
            margin-top: 10px;
        }
        .image-container {
            margin: 35px 0;
            text-align: center;
        }
        .article-img {
            max-width: 100%;
            height: auto;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            transition: var(--transition);
        }
        .article-img:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.15);
        }
        .caption {
            font-style: italic;
            color: var(--text-light);
            margin-top: 10px;
            font-size: 0.95rem;
        }
        ul, ol {
            margin-left: 25px;
            margin-bottom: 25px;
        }
        li {
            margin-bottom: 10px;
            font-size: 1.1rem;
        }
        aside {
            display: flex;
            flex-direction: column;
            gap: 30px;
        }
        .sidebar-widget {
            background-color: white;
            border-radius: var(--border-radius);
            padding: 25px;
            box-shadow: var(--shadow);
        }
        .widget-title {
            color: var(--primary);
            font-size: 1.5rem;
            margin-bottom: 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--light);
        }
        .search-form {
            display: flex;
            margin-bottom: 20px;
        }
        .search-input {
            flex: 1;
            padding: 15px;
            border: 2px solid #ddd;
            border-right: none;
            border-radius: var(--border-radius) 0 0 var(--border-radius);
            font-size: 1rem;
        }
        .search-button {
            background-color: var(--secondary);
            color: white;
            border: none;
            padding: 0 25px;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
            cursor: pointer;
            transition: var(--transition);
            font-size: 1.1rem;
        }
        .search-button:hover {
            background-color: #2980b9;
        }
        .rating-widget {
            text-align: center;
        }
        .stars {
            display: flex;
            justify-content: center;
            gap: 5px;
            margin: 20px 0;
        }
        .star {
            font-size: 2rem;
            color: #ddd;
            cursor: pointer;
            transition: var(--transition);
        }
        .star:hover, .star.active {
            color: var(--warning);
        }
        .rating-form {
            margin-top: 20px;
        }
        .rating-submit {
            background-color: var(--success);
            color: white;
            border: none;
            padding: 12px 30px;
            border-radius: var(--border-radius);
            cursor: pointer;
            font-size: 1.1rem;
            font-weight: 600;
            width: 100%;
            transition: var(--transition);
        }
        .rating-submit:hover {
            background-color: #219653;
        }
        .comment-form textarea {
            width: 100%;
            padding: 15px;
            border: 2px solid #ddd;
            border-radius: var(--border-radius);
            font-size: 1rem;
            min-height: 150px;
            margin-bottom: 15px;
            resize: vertical;
        }
        .comment-submit {
            background-color: var(--secondary);
            color: white;
            border: none;
            padding: 15px 30px;
            border-radius: var(--border-radius);
            cursor: pointer;
            font-size: 1.1rem;
            font-weight: 600;
            width: 100%;
            transition: var(--transition);
        }
        .comment-submit:hover {
            background-color: #2980b9;
        }
        .long-tail-links {
            max-width: var(--container-width);
            margin: 40px auto 20px;
            padding: 0 20px;
        }
        .web-links-container {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 20px;
            margin-bottom: 30px;
        }
        .web-link {
            background-color: white;
            padding: 20px;
            border-radius: var(--border-radius);
            box-shadow: 0 3px 10px rgba(0, 0, 0, 0.08);
            transition: var(--transition);
        }
        .web-link:hover {
            transform: translateY(-5px);
            box-shadow: 0 8px 15px rgba(0, 0, 0, 0.12);
            background-color: #f0f7ff;
        }
        .web-link a {
            color: var(--secondary);
            text-decoration: none;
            font-weight: 600;
            font-size: 1.1rem;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .web-link a:hover {
            color: var(--primary);
            text-decoration: underline;
        }
        footer {
            background-color: var(--primary);
            color: white;
            padding-top: 40px;
            margin-top: 50px;
        }
        .footer-container {
            max-width: var(--container-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-section h3 {
            color: white;
            font-size: 1.5rem;
            margin-bottom: 25px;
            border-bottom: 2px solid var(--secondary);
            padding-bottom: 10px;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 15px;
        }
        .footer-links a {
            color: #ddd;
            text-decoration: none;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .footer-links a:hover {
            color: var(--secondary);
            padding-left: 5px;
        }
        .copyright {
            text-align: center;
            padding: 25px 0;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: #bdc3c7;
            font-size: 1rem;
        }
        @media (max-width: 992px) {
            .content-container {
                grid-template-columns: 1fr;
            }
            .web-links-container {
                grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
            }
        }
        @media (max-width: 768px) {
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            .header-container {
                padding: 10px 20px;
            }
            .hamburger {
                display: block;
            }
            nav {
                width: 100%;
                display: none;
            }
            nav.active {
                display: block;
            }
            nav ul {
                flex-direction: column;
                gap: 10px;
                padding: 20px 0;
            }
            .logo {
                font-size: 1.8rem;
                padding: 15px 0;
            }
            article {
                padding: 25px;
            }
        }
        @media (max-width: 576px) {
            .stat-number {
                font-size: 2.8rem;
            }
            .web-links-container {
                grid-template-columns: 1fr;
            }
        }
        .text-center {
            text-align: center;
        }
        .mb-20 {
            margin-bottom: 20px;
        }
        .mt-20 {
            margin-top: 20px;
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 5px;
        }
        .keyword {
            background-color: #e8f4fc;
            color: var(--secondary);
            padding: 2px 8px;
            border-radius: 4px;
            font-weight: 600;
        }
        .quote {
            font-style: italic;
            border-left: 4px solid var(--accent);
            padding-left: 20px;
            margin: 30px 0;
            color: var(--text-light);
            font-size: 1.2rem;
        }
        .author {
            font-weight: bold;
            color: var(--primary);
            margin-top: 10px;
        }
        .table-container {
            overflow-x: auto;
            margin: 30px 0;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            margin: 25px 0;
        }
        th, td {
            padding: 15px;
            text-align: left;
            border-bottom: 1px solid #ddd;
        }
        th {
            background-color: var(--light);
            color: var(--primary);
            font-weight: 700;
        }
        tr:hover {
            background-color: #f5f5f5;
        }
        .btn {
            display: inline-block;
            background-color: var(--secondary);
            color: white;
            padding: 12px 28px;
            border-radius: var(--border-radius);
            text-decoration: none;
            font-weight: 600;
            transition: var(--transition);
            border: none;
            cursor: pointer;
            font-size: 1.1rem;
        }
        .btn:hover {
            background-color: #2980b9;
            transform: translateY(-3px);
            box-shadow: 0 7px 14px rgba(0, 0, 0, 0.1);
        }
        .btn-accent {
            background-color: var(--accent);
        }
        .btn-accent:hover {
            background-color: #c0392b;
        }
        .expandable {
            background-color: #f8f9fa;
            border-radius: var(--border-radius);
            padding: 20px;
            margin: 25px 0;
            border-left: 5px solid var(--success);
            cursor: pointer;
            transition: var(--transition);
        }
        .expandable:hover {
            background-color: #e9f7ef;
        }
        .expandable-title {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 700;
            color: var(--primary);
        }
        .expandable-content {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.5s ease;
        }
        .expandable.active .expandable-content {
            max-height: 1000px;
            margin-top: 20px;
        }