* { 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: #2c3e50;
            background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
            min-height: 100vh;
        }
        img { max-width: 100%; height: auto; display: block; }
        h1, h2, h3, h4 { color: #1a237e; margin-bottom: 1rem; font-weight: 700; }
        h1 { font-size: 2.8rem; line-height: 1.2; border-bottom: 4px solid #ff9800; padding-bottom: 0.5rem; }
        h2 { font-size: 2.2rem; padding-top: 1.5rem; border-left: 5px solid #4caf50; padding-left: 15px; }
        h3 { font-size: 1.8rem; color: #3949ab; }
        p { margin-bottom: 1.5rem; font-size: 1.1rem; }
        strong { color: #d84315; }
        em { color: #5d4037; }
        .highlight { background: linear-gradient(120deg, #fff9c4 0%, #fff9c4 100%); padding: 0.2rem 0.5rem; border-radius: 3px; }
        .quote { border-left: 4px solid #78909c; padding-left: 1.5rem; font-style: italic; margin: 2rem; color: #546e7a; }
        .emoji { font-size: 1.3em; margin-right: 0.3rem; }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(90deg, #1a237e 0%, #283593 100%);
            color: white;
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo a {
            color: white;
            font-size: 2.2rem;
            font-weight: 800;
            text-decoration: none;
            font-family: 'Arial Black', sans-serif;
            letter-spacing: 1px;
            text-transform: uppercase;
            background: linear-gradient(to right, #ff9800, #ffeb3b);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .logo a:hover { opacity: 0.9; }
        .desktop-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .desktop-nav a {
            color: #e3f2fd;
            text-decoration: none;
            font-weight: 600;
            font-size: 1.1rem;
            padding: 0.5rem 0;
            position: relative;
            transition: color 0.3s;
        }
        .desktop-nav a:hover,
        .desktop-nav a.active { color: #ff9800; }
        .desktop-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 3px;
            background: #ff9800;
            transition: width 0.3s;
        }
        .desktop-nav a:hover::after { width: 100%; }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: white;
            cursor: pointer;
        }
        .mobile-nav {
            display: none;
            position: absolute;
            top: 100%;
            left: 0;
            width: 100%;
            background: #1a237e;
            padding: 1rem;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
        }
        .mobile-nav ul { list-style: none; }
        .mobile-nav li { margin: 1rem 0; }
        .mobile-nav a {
            color: white;
            text-decoration: none;
            font-size: 1.2rem;
            display: block;
            padding: 0.5rem;
            border-radius: 5px;
        }
        .mobile-nav a:hover { background: #283593; }
        .breadcrumb {
            padding: 1rem 0;
            background: #edf2f7;
            font-size: 0.95rem;
        }
        .breadcrumb ol {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '›';
            margin: 0 10px;
            color: #666;
        }
        .breadcrumb a {
            color: #1a237e;
            text-decoration: none;
        }
        .breadcrumb a:hover { text-decoration: underline; }
        main {
            padding: 3rem 0;
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
        }
        .article-content { background: white; padding: 2.5rem; border-radius: 15px; box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08); }
        .sidebar { background: white; padding: 1.5rem; border-radius: 15px; box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05); align-self: start; }
        .search-box { margin-bottom: 2rem; }
        .search-box h3 { margin-bottom: 1rem; }
        .search-form { display: flex; }
        .search-input {
            flex: 1;
            padding: 0.8rem 1rem;
            border: 2px solid #c5cae9;
            border-radius: 8px 0 0 8px;
            font-size: 1rem;
        }
        .search-btn {
            background: #1a237e;
            color: white;
            border: none;
            padding: 0.8rem 1.5rem;
            border-radius: 0 8px 8px 0;
            cursor: pointer;
            transition: background 0.3s;
        }
        .search-btn:hover { background: #283593; }
        .user-interaction { margin-top: 3rem; padding-top: 2rem; border-top: 2px dashed #ddd; }
        .comment-form, .rating-form { margin-bottom: 2.5rem; }
        .form-group { margin-bottom: 1.5rem; }
        label { display: block; margin-bottom: 0.5rem; font-weight: 600; color: #333; }
        input, textarea, select {
            width: 100%;
            padding: 0.8rem;
            border: 2px solid #c5cae9;
            border-radius: 8px;
            font-size: 1rem;
            font-family: inherit;
        }
        textarea { min-height: 120px; resize: vertical; }
        .submit-btn {
            background: linear-gradient(90deg, #4caf50, #2e7d32);
            color: white;
            border: none;
            padding: 0.9rem 2rem;
            border-radius: 8px;
            font-size: 1.1rem;
            font-weight: 600;
            cursor: pointer;
            transition: transform 0.2s, box-shadow 0.2s;
        }
        .submit-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 5px 15px rgba(76, 175, 80, 0.3);
        }
        .stars { display: flex; gap: 0.5rem; margin: 1rem 0; }
        .star { font-size: 2rem; color: #ddd; cursor: pointer; transition: color 0.2s; }
        .star:hover, .star.active { color: #ff9800; }
        .footer-links {
            background: #1a237e;
            padding: 3rem 0;
            margin-top: 3rem;
        }
        .web-links-container {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 1.5rem;
        }
        .web-link {
            background: rgba(255, 255, 255, 0.1);
            padding: 1.2rem;
            border-radius: 8px;
            transition: transform 0.3s, background 0.3s;
        }
        .web-link:hover {
            transform: translateY(-5px);
            background: rgba(255, 255, 255, 0.2);
        }
        .web-link a {
            color: #e3f2fd;
            text-decoration: none;
            font-weight: 500;
            display: block;
        }
        .web-link a:hover { text-decoration: underline; color: #ff9800; }
        footer {
            background: #0d1440;
            color: #b0bec5;
            padding: 2.5rem 0;
            text-align: center;
        }
        .copyright { margin-top: 1.5rem; font-size: 0.95rem; }
        @media (max-width: 992px) {
            main { grid-template-columns: 1fr; }
            .sidebar { order: -1; }
        }
        @media (max-width: 768px) {
            h1 { font-size: 2.2rem; }
            h2 { font-size: 1.8rem; }
            h3 { font-size: 1.5rem; }
            .desktop-nav { display: none; }
            .hamburger { display: block; }
            .mobile-nav.show { display: block; }
            .header-container { flex-wrap: wrap; }
            .article-content { padding: 1.5rem; }
        }
        @media (max-width: 576px) {
            .container { padding: 0 15px; }
            .search-form { flex-direction: column; }
            .search-input, .search-btn { border-radius: 8px; margin-bottom: 0.5rem; }
            .web-links-container { grid-template-columns: 1fr; }
        }