* { 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;
            max-width: 100%;
            overflow-x: hidden;
        }
        img { max-width: 100%; height: auto; display: block; }
        :root {
            --primary: #4a6fa5; 
            --secondary: #e67e22; 
            --accent: #16a085; 
            --dark: #2c3e50;
            --light: #ecf0f1;
            --shadow: 0 4px 12px rgba(0,0,0,0.08);
            --transition: all 0.3s ease;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .btn {
            display: inline-block;
            padding: 12px 28px;
            background: var(--secondary);
            color: white;
            border: none;
            border-radius: 5px;
            cursor: pointer;
            font-weight: 600;
            text-decoration: none;
            transition: var(--transition);
        }
        .btn:hover { background-color: #d35400; transform: translateY(-3px); box-shadow: var(--shadow); }
        .text-center { text-align: center; }
        .mb-1 { margin-bottom: 1rem; }
        .mb-2 { margin-bottom: 2rem; }
        .mb-3 { margin-bottom: 3rem; }
        .mt-2 { margin-top: 2rem; }
        .py-2 { padding-top: 2rem; padding-bottom: 2rem; }
        .highlight { background-color: #fffacd; padding: 2px 5px; border-radius: 3px; }
        .site-header {
            background-color: var(--dark);
            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;
            font-family: 'Arial Black', sans-serif;
        }
        .my-logo span { color: var(--secondary); }
        .nav-desktop ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .nav-desktop a {
            color: var(--light);
            text-decoration: none;
            font-weight: 600;
            padding: 5px 10px;
            border-radius: 3px;
            transition: var(--transition);
        }
        .nav-desktop a:hover, .nav-desktop a.active { color: var(--secondary); background-color: rgba(255,255,255,0.1); }
        .header-search {
            display: flex;
            align-items: center;
            background: white;
            border-radius: 50px;
            padding: 5px 15px;
            margin-left: 2rem;
        }
        .header-search input {
            border: none;
            outline: none;
            padding: 8px;
            width: 200px;
        }
        .header-search button {
            background: none;
            border: none;
            color: var(--primary);
            cursor: pointer;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: white;
            cursor: pointer;
        }
        .nav-mobile {
            display: none;
            position: absolute;
            top: 100%;
            left: 0;
            width: 100%;
            background: var(--dark);
            flex-direction: column;
            padding: 1rem;
            box-shadow: var(--shadow);
        }
        .nav-mobile.active { display: flex; }
        .nav-mobile ul { list-style: none; }
        .nav-mobile li { margin-bottom: 1rem; }
        .nav-mobile a { color: white; text-decoration: none; font-size: 1.1rem; }
        .breadcrumb {
            background-color: #e9ecef;
            padding: 1rem;
            margin-bottom: 2rem;
            border-radius: 5px;
        }
        .breadcrumb a { color: var(--primary); text-decoration: none; }
        .breadcrumb a:hover { text-decoration: underline; }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
            padding: 2rem 0;
        }
        @media (max-width: 992px) {
            .main-content { grid-template-columns: 1fr; }
        }
        .article-content {
            background: white;
            padding: 2.5rem;
            border-radius: 10px;
            box-shadow: var(--shadow);
        }
        .article-meta {
            display: flex;
            justify-content: space-between;
            color: #777;
            font-size: 0.9rem;
            border-bottom: 1px solid #eee;
            padding-bottom: 1rem;
            margin-bottom: 2rem;
        }
        .article-heading {
            color: var(--dark);
            margin-bottom: 1.5rem;
            line-height: 1.2;
        }
        .article-heading h1 { font-size: 2.8rem; color: var(--primary); margin-bottom: 0.5rem; }
        .article-heading .subtitle { font-size: 1.3rem; color: #666; font-weight: normal; }
        h2 { color: var(--secondary); margin: 2.5rem 0 1.5rem; padding-bottom: 0.5rem; border-bottom: 2px dashed #eee; }
        h3 { color: var(--accent); margin: 2rem 0 1rem; }
        h4 { color: var(--dark); margin: 1.5rem 0 1rem; }
        p { margin-bottom: 1.5rem; text-align: justify; }
        ul, ol { margin-left: 1.5rem; margin-bottom: 1.5rem; }
        blockquote {
            border-left: 5px solid var(--secondary);
            padding-left: 1.5rem;
            margin: 2rem 0;
            font-style: italic;
            color: #555;
            background-color: #f8f9fa;
            padding-top: 1rem;
            padding-bottom: 1rem;
            border-radius: 0 5px 5px 0;
        }
        .feature-img {
            margin: 2rem 0;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        .feature-img figcaption {
            text-align: center;
            font-size: 0.9rem;
            color: #777;
            padding: 0.5rem;
            background: #f1f1f1;
        }
        .related-links {
            background: #e8f4fc;
            padding: 1.5rem;
            border-radius: 8px;
            margin: 2rem 0;
        }
        .related-links h3 { margin-top: 0; color: var(--primary); }
        .related-links ul { list-style: none; margin-left: 0; }
        .related-links li { margin-bottom: 0.8rem; }
        .related-links a { color: var(--dark); text-decoration: none; font-weight: 500; }
        .related-links a:hover { color: var(--secondary); text-decoration: underline; }
        .sidebar-widget {
            background: white;
            padding: 1.5rem;
            border-radius: 10px;
            box-shadow: var(--shadow);
            margin-bottom: 2rem;
        }
        .sidebar-widget h3 { margin-top: 0; color: var(--primary); font-size: 1.3rem; }
        .comment-form, .rating-form {
            background: #f8f9fa;
            padding: 1.5rem;
            border-radius: 8px;
            margin-top: 2rem;
        }
        .form-group { margin-bottom: 1.2rem; }
        .form-group label { display: block; margin-bottom: 0.5rem; font-weight: 600; }
        .form-group input, .form-group textarea, .form-group select {
            width: 100%;
            padding: 10px;
            border: 1px solid #ccc;
            border-radius: 5px;
            font-family: inherit;
        }
        .star-rating { display: flex; gap: 5px; font-size: 1.8rem; color: #ddd; cursor: pointer; }
        .star-rating .star:hover, .star-rating .star.active { color: #ffc107; }
        .site-footer {
            background: var(--dark);
            color: white;
            padding: 3rem 0 1.5rem;
            margin-top: 3rem;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
        }
        .footer-logo { font-size: 1.8rem; font-weight: 800; margin-bottom: 1rem; }
        .footer-links h4 { color: var(--secondary); margin-bottom: 1rem; }
        .footer-links ul { list-style: none; }
        .footer-links li { margin-bottom: 0.7rem; }
        .footer-links a { color: #ccc; text-decoration: none; }
        .footer-links a:hover { color: white; }
        friend-link {
            display: inline-block;
            background: rgba(255,255,255,0.1);
            padding: 0.5rem 1rem;
            border-radius: 4px;
            margin-right: 0.5rem;
            margin-bottom: 0.5rem;
        }
        friend-link a { color: #4fc3f7; }
        .copyright {
            text-align: center;
            margin-top: 3rem;
            padding-top: 1.5rem;
            border-top: 1px solid #444;
            color: #aaa;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            .header-container { flex-wrap: wrap; }
            .nav-desktop, .header-search { display: none; }
            .hamburger { display: block; }
            .article-heading h1 { font-size: 2rem; }
            .article-content { padding: 1.5rem; }
            .main-content { gap: 2rem; }
        }