:root {
        --primary: #2c3e50;
        --secondary: #3498db;
        --accent: #e74c3c;
        --light: #ecf0f1;
        --dark: #2c3e50;
        --gray: #7f8c8d;
        --success: #27ae60;
        --shadow: 0 4px 12px rgba(0,0,0,0.08);
        --transition: all 0.3s ease;
        --border-radius: 8px;
    }
    * {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
        font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    }
    body {
        background-color: #f9f9f9;
        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(--primary) 0%, #1a2530 100%);
        color: white;
        padding: 1.2rem 0;
        box-shadow: var(--shadow);
        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: white;
        text-decoration: none;
        letter-spacing: -1px;
    }
    .logo span {
        color: var(--secondary);
    }
    nav ul {
        display: flex;
        list-style: none;
        gap: 2rem;
    }
    nav a {
        color: var(--light);
        text-decoration: none;
        font-weight: 600;
        font-size: 1.05rem;
        padding: 0.5rem 0.8rem;
        border-radius: var(--border-radius);
        transition: var(--transition);
    }
    nav a:hover, nav a.active {
        background-color: rgba(52, 152, 219, 0.2);
        color: var(--secondary);
    }
    .hamburger {
        display: none;
        font-size: 1.8rem;
        cursor: pointer;
        color: white;
    }
    .breadcrumb {
        background-color: #f1f5f9;
        padding: 1rem 0;
        font-size: 0.95rem;
        margin-bottom: 2rem;
    }
    .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: var(--gray);
    }
    .breadcrumb a {
        color: var(--secondary);
        text-decoration: none;
    }
    .breadcrumb a:hover {
        text-decoration: underline;
    }
    main {
        display: grid;
        grid-template-columns: 1fr 300px;
        gap: 3rem;
        margin: 2rem 0;
    }
    .article-content {
        background: white;
        padding: 2.5rem;
        border-radius: var(--border-radius);
        box-shadow: var(--shadow);
    }
    .sidebar {
        display: flex;
        flex-direction: column;
        gap: 1.5rem;
    }
    h1 {
        font-size: 2.8rem;
        color: var(--primary);
        margin-bottom: 1.5rem;
        line-height: 1.2;
    }
    h2 {
        font-size: 2rem;
        color: var(--secondary);
        margin: 2.5rem 0 1rem;
        padding-bottom: 0.5rem;
        border-bottom: 2px solid var(--light);
    }
    h3 {
        font-size: 1.5rem;
        color: var(--dark);
        margin: 1.8rem 0 0.8rem;
    }
    p {
        margin-bottom: 1.5rem;
        font-size: 1.1rem;
        color: #444;
    }
    .lead {
        font-size: 1.3rem;
        font-weight: 600;
        color: var(--primary);
        line-height: 1.6;
    }
    .highlight {
        background-color: #fff9e6;
        border-left: 4px solid #f1c40f;
        padding: 1.5rem;
        margin: 2rem 0;
        border-radius: 0 var(--border-radius) var(--border-radius) 0;
    }
    .search-box {
        background: white;
        padding: 1.5rem;
        border-radius: var(--border-radius);
        box-shadow: var(--shadow);
    }
    .search-box h3 {
        margin-top: 0;
        color: var(--primary);
    }
    .search-form {
        display: flex;
        margin-top: 1rem;
    }
    .search-form input {
        flex: 1;
        padding: 0.8rem 1rem;
        border: 2px solid #ddd;
        border-radius: var(--border-radius) 0 0 var(--border-radius);
        font-size: 1rem;
        outline: none;
        transition: var(--transition);
    }
    .search-form input:focus {
        border-color: var(--secondary);
    }
    .search-form button {
        background-color: var(--secondary);
        color: white;
        border: none;
        padding: 0 1.5rem;
        border-radius: 0 var(--border-radius) var(--border-radius) 0;
        cursor: pointer;
        transition: var(--transition);
        font-size: 1.1rem;
    }
    .search-form button:hover {
        background-color: #2980b9;
    }
    .comments-section, .rating-section {
        background: white;
        padding: 1.5rem;
        border-radius: var(--border-radius);
        box-shadow: var(--shadow);
    }
    .rating-stars {
        display: flex;
        gap: 0.5rem;
        font-size: 1.8rem;
        color: #ffc107;
        margin: 1rem 0;
    }
    .rating-stars i {
        cursor: pointer;
        transition: var(--transition);
    }
    .rating-stars i:hover {
        transform: scale(1.2);
    }
    .comment-form textarea, .comment-form input {
        width: 100%;
        padding: 0.8rem;
        margin-bottom: 1rem;
        border: 1px solid #ddd;
        border-radius: var(--border-radius);
        font-size: 1rem;
    }
    .comment-form button, .rating-form button {
        background-color: var(--success);
        color: white;
        border: none;
        padding: 0.8rem 1.5rem;
        border-radius: var(--border-radius);
        cursor: pointer;
        font-weight: 600;
        transition: var(--transition);
    }
    .comment-form button:hover, .rating-form button:hover {
        background-color: #219653;
    }
    .featured-image {
        width: 100%;
        height: auto;
        border-radius: var(--border-radius);
        margin: 2rem 0;
        box-shadow: 0 6px 16px rgba(0,0,0,0.1);
        transition: transform 0.5s ease;
    }
    .featured-image:hover {
        transform: scale(1.01);
    }
    .footer-links {
        background-color: #2c3e50;
        padding: 2.5rem 0;
        margin-top: 3rem;
    }
    .web-links-container {
        display: grid;
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
        gap: 1rem;
    }
    .web-link {
        background-color: rgba(255,255,255,0.05);
        padding: 1rem;
        border-radius: var(--border-radius);
        transition: var(--transition);
    }
    .web-link:hover {
        background-color: rgba(52, 152, 219, 0.2);
        transform: translateY(-3px);
    }
    .web-link a {
        color: var(--light);
        text-decoration: none;
        font-size: 1rem;
        display: block;
    }
    .web-link a:hover {
        color: var(--secondary);
    }
    footer {
        background-color: #1a252f;
        color: #bdc3c7;
        padding: 2rem 0;
        text-align: center;
    }
    .copyright {
        font-size: 0.95rem;
        opacity: 0.8;
        margin-top: 1rem;
    }
    @media (max-width: 992px) {
        main {
            grid-template-columns: 1fr;
            gap: 2rem;
        }
        h1 {
            font-size: 2.4rem;
        }
    }
    @media (max-width: 768px) {
        .header-content {
            flex-wrap: wrap;
        }
        nav ul {
            display: none;
            flex-direction: column;
            width: 100%;
            background-color: var(--primary);
            position: absolute;
            top: 100%;
            left: 0;
            padding: 1rem;
            box-shadow: var(--shadow);
        }
        nav ul.show {
            display: flex;
        }
        .hamburger {
            display: block;
        }
        .article-content {
            padding: 1.5rem;
        }
    }