* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        body {
            background-color: #0f1a2b;
            color: #e0e0e0;
            line-height: 1.6;
            overflow-x: hidden;
        }
        a {
            color: #4fc3f7;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        a:hover {
            color: #29b6f6;
        }
        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(135deg, #ff5722, #ff9800);
            color: white;
            padding: 12px 24px;
            border-radius: 30px;
            font-weight: bold;
            border: none;
            cursor: pointer;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        .btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(255, 87, 34, 0.3);
        }
        header {
            background: linear-gradient(180deg, #1a2b4a 0%, #0f1a2b 100%);
            padding: 15px 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo a {
            font-size: 1.8rem;
            font-weight: 800;
            color: #4fc3f7;
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        .logo span {
            color: #ff9800;
        }
        nav ul {
            display: flex;
            list-style: none;
        }
        nav ul li {
            margin-left: 25px;
        }
        nav ul li a {
            font-weight: 600;
            font-size: 1rem;
            padding: 8px 5px;
            border-bottom: 2px solid transparent;
        }
        nav ul li a:hover {
            border-bottom-color: #4fc3f7;
        }
        .hamburger {
            display: none;
            font-size: 1.5rem;
            cursor: pointer;
            color: #4fc3f7;
        }
        .breadcrumb {
            padding: 15px 0;
            font-size: 0.9rem;
            background-color: #152238;
            margin-bottom: 30px;
        }
        .breadcrumb a {
            color: #b0bec5;
        }
        .breadcrumb a:hover {
            color: #4fc3f7;
        }
        .breadcrumb span {
            color: #78909c;
            margin: 0 8px;
        }
        main {
            padding: 20px 0 50px;
        }
        article {
            background-color: #152238;
            border-radius: 12px;
            padding: 40px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
            margin-bottom: 40px;
        }
        h1 {
            font-size: 2.8rem;
            color: #4fc3f7;
            margin-bottom: 20px;
            line-height: 1.2;
            text-align: center;
        }
        h2 {
            font-size: 2rem;
            color: #ff9800;
            margin-top: 40px;
            margin-bottom: 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid #2a3c5c;
        }
        h3 {
            font-size: 1.6rem;
            color: #a5d6a7;
            margin-top: 30px;
            margin-bottom: 15px;
        }
        h4 {
            font-size: 1.3rem;
            color: #ce93d8;
            margin-top: 20px;
            margin-bottom: 10px;
        }
        p {
            margin-bottom: 20px;
            font-size: 1.1rem;
        }
        .highlight {
            background-color: #2a3c5c;
            border-left: 5px solid #ff9800;
            padding: 20px;
            margin: 25px 0;
            border-radius: 0 8px 8px 0;
        }
        .quote {
            font-style: italic;
            color: #b0bec5;
            border-left: 4px solid #4fc3f7;
            padding-left: 20px;
            margin: 25px 0;
        }
        .image-container {
            margin: 30px 0;
            text-align: center;
        }
        .image-container img {
            border-radius: 10px;
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.6);
            border: 2px solid #2a3c5c;
        }
        .image-caption {
            font-size: 0.9rem;
            color: #90a4ae;
            margin-top: 10px;
            font-style: italic;
        }
        ul, ol {
            margin-left: 25px;
            margin-bottom: 20px;
        }
        li {
            margin-bottom: 10px;
        }
        .sidebar {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 25px;
            margin-top: 40px;
        }
        .module {
            background-color: #1a2b4a;
            padding: 25px;
            border-radius: 10px;
            box-shadow: 0 6px 15px rgba(0, 0, 0, 0.3);
        }
        .module h3 {
            color: #4fc3f7;
            margin-top: 0;
        }
        .search-box {
            margin-bottom: 30px;
        }
        .search-box form {
            display: flex;
        }
        .search-box input {
            flex: 1;
            padding: 15px;
            border: 2px solid #2a3c5c;
            background-color: #0f1a2b;
            color: #e0e0e0;
            border-radius: 30px 0 0 30px;
            font-size: 1rem;
        }
        .search-box button {
            background: linear-gradient(135deg, #4fc3f7, #29b6f6);
            color: white;
            border: none;
            padding: 0 25px;
            border-radius: 0 30px 30px 0;
            cursor: pointer;
            font-weight: bold;
            transition: background 0.3s ease;
        }
        .search-box button:hover {
            background: linear-gradient(135deg, #29b6f6, #0288d1);
        }
        .comment-form, .rating-form {
            margin-top: 30px;
            padding-top: 30px;
            border-top: 1px solid #2a3c5c;
        }
        .form-group {
            margin-bottom: 20px;
        }
        .form-group label {
            display: block;
            margin-bottom: 8px;
            color: #b0bec5;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 12px;
            background-color: #0f1a2b;
            border: 1px solid #2a3c5c;
            border-radius: 6px;
            color: #e0e0e0;
            font-size: 1rem;
        }
        .stars {
            display: flex;
            gap: 10px;
            font-size: 1.8rem;
            color: #ff9800;
            cursor: pointer;
        }
        .stars i {
            transition: color 0.2s ease;
        }
        footer {
            background-color: #0a121f;
            padding: 40px 0 20px;
            margin-top: 50px;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 30px;
            margin-bottom: 30px;
        }
        .footer-section h3 {
            color: #4fc3f7;
            margin-bottom: 20px;
            font-size: 1.3rem;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        friend-link {
            display: block;
            margin-top: 10px;
        }
        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid #2a3c5c;
            color: #90a4ae;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            .header-container {
                flex-wrap: wrap;
            }
            .hamburger {
                display: block;
            }
            nav {
                width: 100%;
                max-height: 0;
                overflow: hidden;
                transition: max-height 0.5s ease;
            }
            nav.active {
                max-height: 300px;
                margin-top: 15px;
            }
            nav ul {
                flex-direction: column;
                width: 100%;
            }
            nav ul li {
                margin: 10px 0;
                margin-left: 0;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.7rem;
            }
            h3 {
                font-size: 1.4rem;
            }
            article {
                padding: 25px;
            }
            .sidebar {
                grid-template-columns: 1fr;
            }
        }