* { 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: linear-gradient(135deg, #f5f7fa 0%, #e4edf5 100%);
            min-height: 100vh;
        }
        a { color: #d32f2f; text-decoration: none; transition: all 0.3s ease; }
        a:hover { color: #9a0007; text-decoration: underline; }
        img { max-width: 100%; height: auto; display: block; }
        ul, ol { padding-left: 2rem; margin: 1rem 0; }
        h1, h2, h3, h4 { font-family: Georgia, 'Times New Roman', Times, serif; color: #1a237e; margin-top: 1.5em; margin-bottom: 0.75em; line-height: 1.3; }
        h1 { font-size: 2.8rem; border-bottom: 4px solid #d32f2f; padding-bottom: 0.5rem; }
        h2 { font-size: 2.2rem; border-left: 5px solid #ff9800; padding-left: 1rem; }
        h3 { font-size: 1.8rem; color: #5d4037; }
        h4 { font-size: 1.4rem; color: #78909c; }
        p { margin-bottom: 1.5rem; font-size: 1.1rem; text-align: justify; }
        .lead { font-size: 1.3rem; font-weight: 300; color: #555; }
        .highlight { background-color: #fff9c4; padding: 0.2em 0.5em; border-radius: 3px; }
        .emoji { font-size: 1.2em; margin-right: 0.3em; }
        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 2rem;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
            margin-top: 2rem;
        }
        @media (max-width: 992px) {
            .content-grid { grid-template-columns: 1fr; }
        }
        .site-header {
            background: linear-gradient(to right, #1a237e, #283593);
            color: white;
            padding: 1rem 0;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-family: Impact, Haettenschweiler, 'Arial Narrow Bold', sans-serif;
            font-size: 2.2rem;
            color: #ffeb3b;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
            letter-spacing: 1px;
        }
        .my-logo:hover { color: #ffc107; text-decoration: none; }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .main-nav a {
            color: white;
            font-weight: 600;
            padding: 0.5rem 1rem;
            border-radius: 4px;
        }
        .main-nav a:hover, .main-nav a.active {
            background-color: rgba(255, 255, 255, 0.2);
            text-decoration: none;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: white;
            cursor: pointer;
        }
        @media (max-width: 768px) {
            .hamburger { display: block; }
            .main-nav ul {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background: #283593;
                padding: 1rem;
                box-shadow: 0 10px 15px rgba(0,0,0,0.1);
            }
            .main-nav.active ul { display: flex; }
        }
        .breadcrumb {
            padding: 1rem 0;
            background-color: #f8f9fa;
            border-bottom: 1px solid #eee;
            font-size: 0.9rem;
        }
        .breadcrumb a { color: #666; }
        .breadcrumb span { color: #999; }
        .article-hero {
            background: url('https://images.unsplash.com/photo-1542843581-0946a32277e9?ixlib=rb-4.0.3&auto=format&fit=crop&w=1200&q=80') center/cover no-repeat;
            height: 400px;
            border-radius: 12px;
            position: relative;
            margin: 2rem 0;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .hero-overlay {
            background: rgba(0, 0, 0, 0.6);
            color: white;
            padding: 2rem;
            border-radius: 8px;
            text-align: center;
            max-width: 80%;
        }
        .article-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1rem 0;
            border-top: 1px dashed #ccc;
            border-bottom: 1px dashed #ccc;
            margin: 2rem 0;
            font-size: 0.95rem;
            color: #666;
        }
        .last-updated { font-style: italic; }
        .sidebar {
            background: white;
            padding: 1.5rem;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            align-self: start;
            position: sticky;
            top: 120px;
        }
        .sidebar-widget {
            margin-bottom: 2rem;
        }
        .sidebar-widget h3 {
            font-size: 1.3rem;
            margin-top: 0;
            border-bottom: 2px solid #ff9800;
            padding-bottom: 0.5rem;
        }
        .search-box {
            display: flex;
            margin-bottom: 1rem;
        }
        .search-box input {
            flex-grow: 1;
            padding: 0.8rem;
            border: 1px solid #ccc;
            border-radius: 4px 0 0 4px;
        }
        .search-box button {
            background: #d32f2f;
            color: white;
            border: none;
            padding: 0 1.5rem;
            border-radius: 0 4px 4px 0;
            cursor: pointer;
        }
        .search-box button:hover { background: #b71c1c; }
        .rating-widget form {
            display: flex;
            flex-direction: column;
            gap: 0.8rem;
        }
        .stars {
            display: flex;
            gap: 0.5rem;
            font-size: 1.5rem;
            color: #ffd700;
            cursor: pointer;
        }
        .comment-form textarea {
            width: 100%;
            padding: 0.8rem;
            border: 1px solid #ccc;
            border-radius: 4px;
            min-height: 120px;
            resize: vertical;
        }
        .btn {
            display: inline-block;
            background: #1a237e;
            color: white;
            padding: 0.8rem 1.8rem;
            border: none;
            border-radius: 4px;
            cursor: pointer;
            font-weight: bold;
            transition: background 0.3s;
        }
        .btn:hover { background: #283593; text-decoration: none; }
        .btn-submit { background: #388e3c; }
        .btn-submit:hover { background: #2e7d32; }
        .featured-img {
            margin: 2.5rem auto;
            text-align: center;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 10px 25px rgba(0,0,0,0.1);
            max-width: 900px;
        }
        .featured-img figcaption {
            font-style: italic;
            padding: 0.8rem;
            background: #f5f5f5;
            color: #666;
        }
        .related-links {
            background: #e8f5e9;
            padding: 1.5rem;
            border-radius: 8px;
            margin: 2.5rem 0;
            border-left: 5px solid #4caf50;
        }
        .related-links h3 { margin-top: 0; }
        .related-links ul { list-style-type: square; }
        .site-footer {
            background: #1a237e;
            color: #e0e0e0;
            padding: 3rem 0 1.5rem;
            margin-top: 4rem;
        }
        .footer-container {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 2rem;
        }
        .footer-col { flex: 1; min-width: 250px; }
        .footer-col h4 {
            color: #ffeb3b;
            border-bottom: 2px solid #3949ab;
            padding-bottom: 0.5rem;
            margin-bottom: 1.5rem;
        }
        .footer-links { list-style: none; padding-left: 0; }
        .footer-links li { margin-bottom: 0.8rem; }
        .footer-links a { color: #bbdefb; }
        friend-link {
            display: block;
            background: #0d47a1;
            color: white;
            padding: 1rem;
            margin: 1rem 0;
            border-radius: 6px;
            text-align: center;
            font-weight: bold;
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            margin-top: 2rem;
            border-top: 1px solid #3949ab;
            font-size: 0.9rem;
            color: #90a4ae;
        }
        .text-center { text-align: center; }
        .mt-3 { margin-top: 3rem; }
        .mb-3 { margin-bottom: 3rem; }
        .p-3 { padding: 1.5rem; }
        .shadow { box-shadow: 0 5px 15px rgba(0,0,0,0.08); }
        .bg-white { background: white; border-radius: 10px; padding: 2rem; }