* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        :root {
            --primary: #2a5caa;
            --secondary: #f8c300;
            --accent: #e63946;
            --dark: #1d3557;
            --light: #f1faee;
            --gray: #6c757d;
            --transition: all 0.3s ease;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background-color: #f8f9fa;
            color: #333;
            line-height: 1.7;
            overflow-x: hidden;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, var(--dark) 0%, var(--primary) 100%);
            color: white;
            padding: 1rem 0;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo a {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--secondary);
            text-decoration: none;
            letter-spacing: 1px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo i {
            color: var(--accent);
        }
        nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        nav a {
            color: white;
            text-decoration: none;
            font-weight: 600;
            font-size: 1.1rem;
            padding: 0.5rem 1rem;
            border-radius: 5px;
            transition: var(--transition);
        }
        nav a:hover,
        nav a.active {
            background-color: var(--secondary);
            color: var(--dark);
        }
        .breadcrumb {
            padding: 1rem 0;
            background-color: #e9ecef;
            color: var(--gray);
            font-size: 0.95rem;
        }
        .breadcrumb a {
            color: var(--primary);
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: white;
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            nav ul {
                position: fixed;
                top: 80px;
                left: -100%;
                flex-direction: column;
                background-color: var(--dark);
                width: 100%;
                text-align: center;
                padding: 2rem 0;
                gap: 1.5rem;
                transition: var(--transition);
                z-index: 999;
            }
            nav ul.show {
                left: 0;
            }
            nav a {
                display: block;
                padding: 1rem;
            }
        }
        .search-container {
            background: linear-gradient(to right, #ffecd2 0%, #fcb69f 100%);
            padding: 2.5rem 0;
            margin-bottom: 3rem;
            border-radius: 12px;
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.08);
        }
        .search-box {
            max-width: 700px;
            margin: 0 auto;
            text-align: center;
        }
        .search-box h2 {
            color: var(--dark);
            margin-bottom: 1.5rem;
            font-size: 2rem;
        }
        .search-form {
            display: flex;
            gap: 10px;
        }
        .search-form input {
            flex: 1;
            padding: 1rem 1.5rem;
            border: 2px solid var(--primary);
            border-radius: 50px;
            font-size: 1.1rem;
            outline: none;
            transition: var(--transition);
        }
        .search-form input:focus {
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(230, 57, 70, 0.2);
        }
        .search-form button {
            background-color: var(--primary);
            color: white;
            border: none;
            border-radius: 50px;
            padding: 0 2rem;
            cursor: pointer;
            font-weight: 600;
            font-size: 1.1rem;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .search-form button:hover {
            background-color: var(--accent);
            transform: translateY(-3px);
        }
        main {
            padding: 2rem 0 4rem;
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
        }
        @media (max-width: 992px) {
            main {
                grid-template-columns: 1fr;
            }
        }
        .article-content {
            background: white;
            padding: 3rem;
            border-radius: 15px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
        }
        h1 {
            color: var(--dark);
            font-size: 2.8rem;
            margin-bottom: 1.5rem;
            line-height: 1.3;
            border-bottom: 5px solid var(--secondary);
            padding-bottom: 1rem;
        }
        h2 {
            color: var(--primary);
            margin: 2.5rem 0 1.5rem;
            font-size: 2rem;
            padding-left: 15px;
            border-left: 6px solid var(--accent);
        }
        h3 {
            color: var(--dark);
            margin: 2rem 0 1rem;
            font-size: 1.6rem;
        }
        p {
            margin-bottom: 1.5rem;
            font-size: 1.15rem;
            text-align: justify;
        }
        .highlight {
            background-color: #fff9db;
            padding: 2rem;
            border-radius: 10px;
            border-left: 5px solid var(--secondary);
            margin: 2rem 0;
            font-size: 1.2rem;
            font-weight: 600;
            color: var(--dark);
        }
        .term {
            color: var(--accent);
            font-weight: 700;
            font-style: italic;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 1.5rem;
            margin: 2.5rem 0;
        }
        .stat-card {
            background: linear-gradient(145deg, #e3f2fd, #bbdefb);
            padding: 1.5rem;
            border-radius: 10px;
            text-align: center;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            transition: var(--transition);
        }
        .stat-card:hover {
            transform: translateY(-10px);
        }
        .stat-card i {
            font-size: 2.5rem;
            color: var(--primary);
            margin-bottom: 1rem;
        }
        .stat-card h4 {
            font-size: 1.8rem;
            color: var(--dark);
            margin-bottom: 0.5rem;
        }
        .stat-card p {
            font-size: 1rem;
            margin: 0;
        }
        .image-container {
            margin: 3rem 0;
            text-align: center;
        }
        .article-img {
            width: 100%;
            max-width: 800px;
            height: auto;
            border-radius: 12px;
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
            transition: var(--transition);
        }
        .article-img:hover {
            transform: scale(1.02);
        }
        .quote {
            font-style: italic;
            background-color: #f8f9fa;
            padding: 2rem;
            border-radius: 10px;
            margin: 2.5rem 0;
            border-left: 5px solid var(--primary);
            font-size: 1.3rem;
            color: var(--dark);
            text-align: center;
        }
        .quote-author {
            text-align: right;
            font-weight: 600;
            color: var(--gray);
            margin-top: 1rem;
        }
        .sidebar {
            background: white;
            padding: 2rem;
            border-radius: 15px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
            height: fit-content;
        }
        .sidebar h3 {
            color: var(--primary);
            margin-bottom: 1.5rem;
            padding-bottom: 0.5rem;
            border-bottom: 3px solid var(--secondary);
        }
        .toc ul {
            list-style: none;
            padding-left: 1rem;
        }
        .toc li {
            margin-bottom: 0.8rem;
        }
        .toc a {
            color: var(--gray);
            text-decoration: none;
            transition: var(--transition);
            display: block;
            padding: 0.5rem;
            border-radius: 5px;
        }
        .toc a:hover {
            color: var(--primary);
            background-color: #f1f8ff;
            padding-left: 1.5rem;
        }
        .rating-widget {
            text-align: center;
            padding: 2rem 1rem;
            background: linear-gradient(135deg, #fdfcfb 0%, #e2d1c3 100%);
            border-radius: 12px;
            margin-top: 2rem;
        }
        .stars {
            font-size: 2rem;
            color: #ffc107;
            margin: 1rem 0;
            cursor: pointer;
        }
        .stars i:hover {
            transform: scale(1.2);
        }
        .rating-widget button {
            background-color: var(--primary);
            color: white;
            border: none;
            padding: 0.8rem 2rem;
            border-radius: 50px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            margin-top: 1rem;
        }
        .rating-widget button:hover {
            background-color: var(--accent);
        }
        .interaction-section {
            margin-top: 4rem;
            background: white;
            padding: 3rem;
            border-radius: 15px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
        }
        .comment-form,
        .rating-form {
            margin-bottom: 3rem;
        }
        .form-group {
            margin-bottom: 1.5rem;
        }
        .form-group label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
            color: var(--dark);
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 1rem;
            border: 2px solid #ddd;
            border-radius: 8px;
            font-size: 1rem;
            transition: var(--transition);
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            border-color: var(--primary);
            outline: none;
            box-shadow: 0 0 0 3px rgba(42, 92, 170, 0.2);
        }
        .form-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1.5rem;
        }
        @media (max-width: 768px) {
            .form-row {
                grid-template-columns: 1fr;
            }
        }
        .submit-btn {
            background-color: var(--primary);
            color: white;
            border: none;
            padding: 1rem 3rem;
            border-radius: 50px;
            font-size: 1.2rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            display: block;
            margin: 0 auto;
        }
        .submit-btn:hover {
            background-color: var(--accent);
            transform: translateY(-3px);
            box-shadow: 0 7px 15px rgba(230, 57, 70, 0.3);
        }
        .longtail-links {
            background: linear-gradient(135deg, #1d3557 0%, #2a5caa 100%);
            padding: 3rem 0;
            margin-top: 4rem;
            color: white;
        }
        .web-link {
            display: inline-block;
            margin: 0.8rem 1.5rem;
        }
        .web-link a {
            color: var(--secondary);
            text-decoration: none;
            font-size: 1.1rem;
            padding: 0.5rem 1rem;
            border-radius: 5px;
            transition: var(--transition);
            border: 1px solid transparent;
        }
        .web-link a:hover {
            background-color: rgba(255, 255, 255, 0.1);
            border-color: var(--secondary);
            transform: translateY(-3px);
        }
        footer {
            background-color: var(--dark);
            color: white;
            padding: 3rem 0 1.5rem;
            text-align: center;
        }
        .footer-links {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-links a {
            color: #ccc;
            text-decoration: none;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: var(--secondary);
        }
        .copyright {
            margin-top: 2rem;
            padding-top: 1.5rem;
            border-top: 1px solid #444;
            color: #aaa;
            font-size: 0.95rem;
        }
        .emoji {
            font-size: 1.5rem;
            margin-right: 10px;
        }
        .bold {
            font-weight: 800;
            color: var(--dark);
        }
        .text-center {
            text-align: center;
        }
        .mt-4 {
            margin-top: 4rem;
        }
        .mb-4 {
            margin-bottom: 4rem;
        }
        .tag {
            display: inline-block;
            background-color: #e9ecef;
            color: var(--dark);
            padding: 0.3rem 1rem;
            border-radius: 50px;
            font-size: 0.9rem;
            margin-right: 0.5rem;
            margin-bottom: 0.5rem;
        }