:root {
            --primary: #2c3e50;
            --secondary: #3498db;
            --accent: #e74c3c;
            --light: #ecf0f1;
            --dark: #1a2530;
            --gray: #7f8c8d;
            --transition: all 0.3s ease;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            --border-radius: 8px;
            --max-width: 1200px;
        }
        * {
            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: #f9f9f9;
            overflow-x: hidden;
        }
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: var(--primary);
            color: white;
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 2rem;
            font-weight: 800;
            color: white;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo i {
            color: var(--secondary);
        }
        .my-logo span {
            background: linear-gradient(90deg, var(--secondary), var(--accent));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }
        nav {
            display: flex;
            align-items: center;
        }
        .nav-links {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .nav-links a {
            color: var(--light);
            text-decoration: none;
            font-weight: 600;
            padding: 0.5rem 1rem;
            border-radius: var(--border-radius);
            transition: var(--transition);
        }
        .nav-links a:hover {
            background-color: var(--secondary);
            color: white;
        }
        .hamburger {
            display: none;
            cursor: pointer;
            font-size: 1.5rem;
            color: white;
        }
        .breadcrumb {
            padding: 1rem 0;
            background-color: #f1f1f1;
            font-size: 0.9rem;
        }
        .breadcrumb a {
            color: var(--secondary);
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .search-container {
            max-width: 600px;
            margin: 2rem auto;
            padding: 0 20px;
        }
        .search-form {
            display: flex;
            box-shadow: var(--shadow);
            border-radius: 50px;
            overflow: hidden;
        }
        .search-form input {
            flex: 1;
            padding: 15px 25px;
            border: none;
            font-size: 1rem;
            outline: none;
        }
        .search-form button {
            background-color: var(--secondary);
            color: white;
            border: none;
            padding: 0 30px;
            cursor: pointer;
            font-size: 1.2rem;
            transition: var(--transition);
        }
        .search-form button:hover {
            background-color: var(--primary);
        }
        main {
            padding: 2rem 0;
            background: white;
        }
        .article-header {
            text-align: center;
            padding: 2rem 0;
            border-bottom: 2px solid var(--light);
            margin-bottom: 3rem;
        }
        h1 {
            font-size: 3rem;
            color: var(--primary);
            margin-bottom: 1rem;
            line-height: 1.2;
        }
        .article-meta {
            color: var(--gray);
            font-size: 0.95rem;
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 20px;
            flex-wrap: wrap;
        }
        .article-meta i {
            color: var(--secondary);
        }
        .content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
        }
        @media (max-width: 992px) {
            .content {
                grid-template-columns: 1fr;
            }
        }
        .article-body {
            font-size: 1.1rem;
        }
        .article-body h2 {
            color: var(--primary);
            margin: 2.5rem 0 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid var(--light);
        }
        .article-body h3 {
            color: var(--secondary);
            margin: 2rem 0 1rem;
        }
        .article-body h4 {
            color: var(--dark);
            margin: 1.5rem 0 0.8rem;
        }
        .article-body p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        .article-body strong {
            color: var(--primary);
            font-weight: 700;
        }
        .article-body em {
            background-color: #fffacd;
            font-style: italic;
            padding: 0 3px;
        }
        .highlight-box {
            background: linear-gradient(135deg, #f5f7fa 0%, #e4e8f0 100%);
            border-left: 5px solid var(--secondary);
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
        }
        .image-container {
            margin: 2.5rem 0;
            text-align: center;
        }
        .image-container img {
            max-width: 100%;
            height: auto;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            transition: transform 0.5s ease;
        }
        .image-container img:hover {
            transform: scale(1.02);
        }
        .image-caption {
            font-size: 0.9rem;
            color: var(--gray);
            margin-top: 10px;
            font-style: italic;
        }
        .link-list {
            background-color: #f8f9fa;
            padding: 1.5rem;
            border-radius: var(--border-radius);
            margin: 2rem 0;
        }
        .link-list h3 {
            margin-top: 0;
        }
        .link-list ul {
            list-style: none;
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 10px;
        }
        .link-list a {
            color: var(--secondary);
            text-decoration: none;
            display: block;
            padding: 8px 15px;
            border-radius: 5px;
            transition: var(--transition);
        }
        .link-list a:hover {
            background-color: var(--secondary);
            color: white;
        }
        .sidebar {
            padding-left: 2rem;
            border-left: 1px solid var(--light);
        }
        @media (max-width: 992px) {
            .sidebar {
                padding-left: 0;
                border-left: none;
                border-top: 1px solid var(--light);
                padding-top: 2rem;
            }
        }
        .sidebar-widget {
            background-color: #f8f9fa;
            padding: 1.5rem;
            border-radius: var(--border-radius);
            margin-bottom: 2rem;
        }
        .sidebar-widget h3 {
            color: var(--primary);
            margin-bottom: 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 1px solid #ddd;
        }
        .rating-form,
        .comment-form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .rating-stars {
            display: flex;
            gap: 5px;
            font-size: 1.5rem;
            color: #ffc107;
            cursor: pointer;
            margin-bottom: 10px;
        }
        .rating-stars i:hover {
            transform: scale(1.2);
        }
        input, textarea, select {
            padding: 12px 15px;
            border: 1px solid #ddd;
            border-radius: var(--border-radius);
            font-family: inherit;
            font-size: 1rem;
            transition: var(--transition);
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: var(--secondary);
            box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.2);
        }
        button[type="submit"] {
            background-color: var(--secondary);
            color: white;
            border: none;
            padding: 15px;
            border-radius: var(--border-radius);
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
        }
        button[type="submit"]:hover {
            background-color: var(--primary);
        }
        footer {
            background-color: var(--dark);
            color: var(--light);
            padding: 3rem 0 1.5rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-logo {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 1rem;
        }
        .footer-links h3 {
            color: white;
            margin-bottom: 1rem;
            font-size: 1.2rem;
        }
        .footer-links ul {
            list-style: none;
        }
        .footer-links a {
            color: #bdc3c7;
            text-decoration: none;
            display: block;
            padding: 5px 0;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: var(--secondary);
            padding-left: 10px;
        }
        friend-link {
            display: block;
            background-color: rgba(255, 255, 255, 0.05);
            padding: 1.5rem;
            border-radius: var(--border-radius);
            margin: 1.5rem 0;
        }
        friend-link h3 {
            color: white;
            margin-bottom: 1rem;
        }
        friend-link a {
            color: var(--secondary);
            text-decoration: none;
            margin-right: 15px;
            display: inline-block;
            margin-bottom: 8px;
        }
        friend-link a:hover {
            text-decoration: underline;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: #95a5a6;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            h1 {
                font-size: 2.2rem;
            }
            .nav-links {
                position: fixed;
                top: 70px;
                right: -100%;
                flex-direction: column;
                background-color: var(--primary);
                width: 80%;
                height: calc(100vh - 70px);
                padding: 2rem;
                transition: 0.5s;
                box-shadow: -5px 0 15px rgba(0,0,0,0.2);
            }
            .nav-links.active {
                right: 0;
            }
            .hamburger {
                display: block;
            }
            .header-container {
                padding: 0 20px;
            }
        }