* { 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, #f8f9ff 0%, #eef2ff 100%);
            min-height: 100vh;
        }
        .container {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .main-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 30px;
        }
        @media (min-width: 992px) {
            .main-grid { grid-template-columns: 3fr 1fr; }
        }
        .site-header {
            background: linear-gradient(90deg, #1a237e 0%, #283593 50%, #3949ab 100%);
            color: white;
            padding: 1rem 0;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            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;
            font-family: 'Georgia', serif;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
            letter-spacing: 1px;
        }
        .logo span { color: #ffeb3b; }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 25px;
        }
        .main-nav a {
            color: #e3f2fd;
            text-decoration: none;
            font-weight: 600;
            font-size: 1.05rem;
            padding: 8px 12px;
            border-radius: 6px;
            transition: all 0.3s ease;
        }
        .main-nav a:hover, .main-nav a.active {
            background-color: rgba(255, 255, 255, 0.15);
            color: #ffeb3b;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: white;
            cursor: pointer;
        }
        @media (max-width: 768px) {
            .hamburger { display: block; }
            .main-nav {
                position: fixed;
                top: 80px;
                left: -100%;
                width: 100%;
                background: #283593;
                transition: left 0.4s ease;
                padding: 20px;
                box-shadow: 0 10px 15px rgba(0,0,0,0.2);
            }
            .main-nav.active { left: 0; }
            .main-nav ul { flex-direction: column; gap: 15px; }
        }
        .breadcrumb {
            background: #edf2f7;
            padding: 12px 20px;
            border-radius: 8px;
            margin: 15px 0 30px;
            font-size: 0.95rem;
        }
        .breadcrumb a { color: #3949ab; text-decoration: none; }
        .breadcrumb a:hover { text-decoration: underline; }
        .breadcrumb i { margin: 0 8px; color: #718096; }
        .article-main {
            background: white;
            border-radius: 16px;
            padding: 40px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
            margin-bottom: 30px;
        }
        .article-header h1 {
            font-size: 2.8rem;
            color: #1a237e;
            margin-bottom: 20px;
            line-height: 1.2;
            border-bottom: 3px solid #ffeb3b;
            padding-bottom: 15px;
        }
        .meta-info {
            display: flex;
            gap: 20px;
            color: #718096;
            margin-bottom: 30px;
            font-size: 0.95rem;
        }
        .meta-info span { display: flex; align-items: center; gap: 5px; }
        .article-content p {
            margin-bottom: 1.8rem;
            font-size: 1.1rem;
            text-align: justify;
        }
        .article-content h2 {
            color: #283593;
            margin: 2.5rem 0 1.2rem;
            padding-bottom: 8px;
            border-bottom: 2px dashed #c5cae9;
            font-size: 1.9rem;
        }
        .article-content h3 {
            color: #3949ab;
            margin: 2rem 0 1rem;
            font-size: 1.5rem;
        }
        .article-content strong {
            color: #1a237e;
            font-weight: 700;
        }
        .article-content em { color: #5a67d8; }
        .highlight-box {
            background: linear-gradient(to right, #e3f2fd, #f3e5f5);
            border-left: 5px solid #3949ab;
            padding: 25px;
            margin: 30px 0;
            border-radius: 0 12px 12px 0;
        }
        .featured-image {
            width: 100%;
            max-width: 800px;
            margin: 30px auto;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 10px 20px rgba(0,0,0,0.1);
        }
        .featured-image img {
            width: 100%;
            height: auto;
            display: block;
            transition: transform 0.5s ease;
        }
        .featured-image:hover img { transform: scale(1.03); }
        .image-caption {
            text-align: center;
            font-style: italic;
            color: #666;
            margin-top: 10px;
            font-size: 0.95rem;
        }
        .interactive-section {
            background: #f8f9ff;
            border: 2px solid #c5cae9;
            border-radius: 12px;
            padding: 25px;
            margin: 40px 0;
        }
        .interactive-section h3 { color: #1a237e; margin-top: 0; }
        .form-group {
            margin-bottom: 20px;
        }
        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
            color: #333;
        }
        .form-control {
            width: 100%;
            padding: 12px 15px;
            border: 1px solid #c5cae9;
            border-radius: 8px;
            font-size: 1rem;
            transition: border 0.3s;
        }
        .form-control:focus {
            outline: none;
            border-color: #3949ab;
            box-shadow: 0 0 0 3px rgba(57, 73, 171, 0.2);
        }
        .btn {
            background: linear-gradient(90deg, #3949ab, #5c6bc0);
            color: white;
            border: none;
            padding: 14px 28px;
            border-radius: 8px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: all 0.3s ease;
        }
        .btn:hover {
            background: linear-gradient(90deg, #303f9f, #3949ab);
            transform: translateY(-3px);
            box-shadow: 0 7px 14px rgba(57, 73, 171, 0.3);
        }
        .rating-stars {
            display: flex;
            gap: 10px;
            margin: 15px 0;
        }
        .star {
            font-size: 1.8rem;
            color: #ddd;
            cursor: pointer;
            transition: color 0.2s;
        }
        .star:hover, .star.active { color: #ffc107; }
        .sidebar {
            background: white;
            border-radius: 16px;
            padding: 30px;
            box-shadow: 0 8px 25px rgba(0, 0, 0, 0.07);
            height: fit-content;
        }
        .sidebar-widget {
            margin-bottom: 35px;
        }
        .sidebar-widget h4 {
            color: #1a237e;
            margin-bottom: 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid #ffeb3b;
            font-size: 1.4rem;
        }
        .popular-links li {
            list-style: none;
            margin-bottom: 15px;
            padding-bottom: 15px;
            border-bottom: 1px solid #eee;
        }
        .popular-links a {
            color: #2d3748;
            text-decoration: none;
            display: block;
            transition: color 0.3s;
        }
        .popular-links a:hover {
            color: #3949ab;
            padding-left: 5px;
        }
        .web-links-section {
            background: #1a237e;
            color: white;
            padding: 40px 20px;
            margin-top: 50px;
            border-radius: 16px 16px 0 0;
        }
        .web-links-container {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 20px;
            margin-top: 25px;
        }
        .web-link {
            background: rgba(255, 255, 255, 0.1);
            padding: 18px;
            border-radius: 10px;
            transition: background 0.3s;
        }
        .web-link:hover { background: rgba(255, 255, 255, 0.2); }
        .web-link a {
            color: #ffeb3b;
            text-decoration: none;
            font-weight: 500;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .web-link a:hover { text-decoration: underline; }
        .site-footer {
            background: #0d1238;
            color: #c5cae9;
            padding: 50px 0 20px;
        }
        .footer-content {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-col { flex: 1; min-width: 250px; }
        .footer-col h5 {
            color: #ffeb3b;
            margin-bottom: 25px;
            font-size: 1.3rem;
        }
        .footer-links li {
            list-style: none;
            margin-bottom: 12px;
        }
        .footer-links a {
            color: #c5cae9;
            text-decoration: none;
            transition: color 0.3s;
        }
        .footer-links a:hover { color: #ffeb3b; }
        .social-links {
            display: flex;
            gap: 15px;
            margin-top: 20px;
        }
        .social-links a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 50%;
            color: white;
            font-size: 1.2rem;
            transition: all 0.3s;
        }
        .social-links a:hover {
            background: #3949ab;
            transform: translateY(-5px);
        }
        .copyright {
            text-align: center;
            padding-top: 25px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            font-size: 0.9rem;
            color: #a0aec0;
        }
        @media (max-width: 768px) {
            .article-main { padding: 25px; }
            .article-header h1 { font-size: 2rem; }
            .meta-info { flex-direction: column; gap: 10px; }
            .footer-content { flex-direction: column; }
        }