* { 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: #f8f9fa;
            max-width: 100vw;
            overflow-x: hidden;
        }
        a { color: #2c5aa0; text-decoration: none; transition: color 0.3s ease; }
        a:hover { color: #e74c3c; }
        img { max-width: 100%; height: auto; display: block; }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .btn {
            display: inline-block;
            background: linear-gradient(to right, #3498db, #2c5aa0);
            color: white;
            padding: 12px 24px;
            border-radius: 50px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: all 0.3s ease;
            box-shadow: 0 4px 6px rgba(0,0,0,0.1);
        }
        .btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 6px 12px rgba(0,0,0,0.15);
            background: linear-gradient(to right, #2980b9, #1a3f7a);
        }
        .section-padding { padding: 60px 0; }
        .text-center { text-align: center; }
        .visually-hidden {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0,0,0,0);
            border: 0;
        }
        .site-header {
            background: linear-gradient(135deg, #1a237e 0%, #283593 100%);
            color: white;
            padding: 15px 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
        }
        .header-content {
            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: #ffd700; }
        .my-logo:hover { color: #ffd700; }
        .breadcrumb {
            background-color: #e8eaf6;
            padding: 10px 0;
            font-size: 0.9rem;
        }
        .breadcrumb ol {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '/';
            margin-left: 8px;
            color: #666;
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 25px;
        }
        .main-nav a {
            color: white;
            font-weight: 500;
            padding: 8px 5px;
            border-bottom: 2px solid transparent;
        }
        .main-nav a:hover,
        .main-nav a.active {
            border-bottom-color: #ffd700;
            color: #ffd700;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
        }
        @media (max-width: 768px) {
            .hamburger { display: block; }
            .main-nav {
                position: fixed;
                top: 70px;
                left: 0;
                width: 100%;
                background: #1a237e;
                flex-direction: column;
                align-items: center;
                padding: 20px;
                clip-path: polygon(0 0, 100% 0, 100% 0, 0 0);
                transition: clip-path 0.4s ease-in-out;
            }
            .main-nav.active {
                clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
            }
            .main-nav ul {
                flex-direction: column;
                width: 100%;
                text-align: center;
            }
        }
        .hero {
            background: linear-gradient(rgba(26, 35, 126, 0.85), rgba(40, 53, 147, 0.9)), url('https://images.unsplash.com/photo-1614732414444-096e5f1122d5?ixlib=rb-4.0.3&auto=format&fit=crop&w=1200&q=80');
            background-size: cover;
            background-position: center;
            color: white;
            padding: 100px 0;
            text-align: center;
        }
        .hero h1 {
            font-size: 3.5rem;
            margin-bottom: 20px;
            text-shadow: 2px 2px 5px rgba(0,0,0,0.3);
        }
        .hero p {
            font-size: 1.2rem;
            max-width: 700px;
            margin: 0 auto 30px;
            opacity: 0.9;
        }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            padding: 40px 0;
        }
        @media (max-width: 992px) {
            .main-content { grid-template-columns: 1fr; }
        }
        .article-body {
            background: white;
            border-radius: 15px;
            padding: 40px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.05);
        }
        .article-body h1,
        .article-body h2,
        .article-body h3,
        .article-body h4 {
            color: #1a237e;
            margin-top: 2em;
            margin-bottom: 0.8em;
            line-height: 1.3;
        }
        .article-body h1 { font-size: 2.8rem; margin-top: 0; }
        .article-body h2 { font-size: 2.2rem; border-left: 5px solid #ffd700; padding-left: 15px; }
        .article-body h3 { font-size: 1.8rem; }
        .article-body h4 { font-size: 1.4rem; color: #2c5aa0; }
        .article-body p {
            margin-bottom: 1.5em;
            font-size: 1.1rem;
            text-align: justify;
        }
        .article-body strong {
            color: #e74c3c;
            font-weight: 700;
        }
        .article-body em { font-style: italic; }
        .article-body blockquote {
            border-left: 4px solid #3498db;
            padding-left: 20px;
            margin: 30px 0;
            font-style: italic;
            color: #555;
            background-color: #f5f9ff;
            padding: 20px;
            border-radius: 0 10px 10px 0;
        }
        .highlight-box {
            background: linear-gradient(to right, #e8f4fc, #d1e8ff);
            border-left: 5px solid #3498db;
            padding: 25px;
            border-radius: 0 10px 10px 0;
            margin: 30px 0;
        }
        .feature-img {
            width: 100%;
            border-radius: 10px;
            margin: 30px auto;
            box-shadow: 0 10px 20px rgba(0,0,0,0.1);
            border: 5px solid white;
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 30px;
        }
        .sidebar-widget {
            background: white;
            border-radius: 15px;
            padding: 25px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        }
        .sidebar-widget h3 {
            color: #1a237e;
            margin-bottom: 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid #ffd700;
        }
        .search-form {
            display: flex;
        }
        .search-form input {
            flex: 1;
            padding: 12px 15px;
            border: 2px solid #ddd;
            border-radius: 50px 0 0 50px;
            font-size: 1rem;
        }
        .search-form button {
            background: #2c5aa0;
            color: white;
            border: none;
            padding: 0 20px;
            border-radius: 0 50px 50px 0;
            cursor: pointer;
        }
        .related-links ul {
            list-style: none;
        }
        .related-links li {
            margin-bottom: 12px;
            padding-bottom: 12px;
            border-bottom: 1px dashed #eee;
        }
        .related-links a {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .related-links a:hover { color: #e74c3c; }
        .related-links i { color: #2c5aa0; }
        .interaction-section {
            background: white;
            border-radius: 15px;
            padding: 40px;
            margin-top: 40px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.05);
        }
        .interaction-section h2 { text-align: center; }
        .rating-widget {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 20px;
            margin: 30px 0;
        }
        .stars {
            display: flex;
            gap: 10px;
            font-size: 2.5rem;
            cursor: pointer;
        }
        .star { color: #ddd; transition: color 0.2s; }
        .star:hover,
        .star.active { color: #ffd700; }
        .comment-form,
        .rating-form {
            display: grid;
            gap: 20px;
            margin-top: 20px;
        }
        .form-group { display: flex; flex-direction: column; }
        .form-group label { margin-bottom: 8px; font-weight: 600; }
        .form-group input,
        .form-group textarea,
        .form-group select {
            padding: 15px;
            border: 2px solid #ddd;
            border-radius: 10px;
            font-size: 1rem;
            transition: border 0.3s;
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            outline: none;
            border-color: #3498db;
        }
        .site-footer {
            background: #1a237e;
            color: white;
            padding: 60px 0 20px;
            margin-top: 60px;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-links h4 {
            color: #ffd700;
            margin-bottom: 20px;
            font-size: 1.3rem;
        }
        .footer-links ul { list-style: none; }
        .footer-links li { margin-bottom: 12px; }
        .footer-links a { color: #ccc; }
        .footer-links a:hover { color: #ffd700; }
        friend-link {
            display: block;
            padding: 15px;
            background: rgba(255,255,255,0.1);
            border-radius: 8px;
            margin-bottom: 10px;
            text-align: center;
        }
        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid rgba(255,255,255,0.1);
            font-size: 0.9rem;
            color: #aaa;
        }
        @media (max-width: 768px) {
            .hero h1 { font-size: 2.5rem; }
            .article-body { padding: 25px; }
            .article-body h1 { font-size: 2.2rem; }
            .article-body h2 { font-size: 1.8rem; }
            .section-padding { padding: 40px 0; }
            .interaction-section { padding: 25px; }
        }