* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background-color: #f8f9fa;
            color: #333;
            line-height: 1.7;
            overflow-x: hidden;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.3s ease;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        ul, ol {
            list-style-position: inside;
            padding-left: 1.2em;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .btn {
            display: inline-block;
            padding: 12px 28px;
            background: linear-gradient(135deg, #6a11cb 0%, #2575fc 100%);
            color: white;
            border: none;
            border-radius: 50px;
            cursor: pointer;
            font-weight: 600;
            text-align: center;
            transition: transform 0.3s, box-shadow 0.3s;
        }
        .btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(106, 17, 203, 0.3);
        }
        section {
            padding: 60px 0;
        }
        header {
            background: linear-gradient(90deg, #1a237e, #283593);
            color: white;
            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;
            padding: 15px 20px;
        }
        .logo a {
            font-size: 1.8rem;
            font-weight: 800;
            color: white;
            display: flex;
            align-items: center;
        }
        .logo i {
            margin-right: 10px;
            color: #4fc3f7;
        }
        .nav-desktop {
            display: flex;
            gap: 30px;
        }
        @media (max-width: 992px) {
            .nav-desktop {
                display: none;
            }
        }
        .nav-desktop a {
            font-weight: 500;
            padding: 8px 0;
            position: relative;
        }
        .nav-desktop a:after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background-color: #4fc3f7;
            transition: width 0.3s;
        }
        .nav-desktop a:hover:after {
            width: 100%;
        }
        .hamburger {
            display: none;
            font-size: 1.5rem;
            cursor: pointer;
            background: none;
            border: none;
            color: white;
        }
        @media (max-width: 992px) {
            .hamburger {
                display: block;
            }
        }
        .nav-mobile {
            display: none;
            flex-direction: column;
            background-color: #1a237e;
            position: absolute;
            top: 100%;
            left: 0;
            width: 100%;
            padding: 20px;
            box-shadow: 0 10px 15px rgba(0,0,0,0.2);
        }
        .nav-mobile.active {
            display: flex;
        }
        .nav-mobile a {
            padding: 15px 0;
            border-bottom: 1px solid rgba(255,255,255,0.1);
            font-weight: 500;
        }
        .nav-mobile a:hover {
            color: #4fc3f7;
        }
        .breadcrumb {
            background-color: #e8eaf6;
            padding: 15px 20px;
            font-size: 0.9rem;
        }
        .breadcrumb a {
            color: #5c6bc0;
        }
        .breadcrumb a:hover {
            color: #1a237e;
            text-decoration: underline;
        }
        .hero {
            background: radial-gradient(circle at top right, #e3f2fd, #f3e5f5);
            text-align: center;
            padding: 80px 20px;
        }
        .hero h1 {
            font-size: 3.2rem;
            color: #1a237e;
            margin-bottom: 20px;
            line-height: 1.2;
        }
        @media (max-width: 768px) {
            .hero h1 {
                font-size: 2.5rem;
            }
        }
        .hero p {
            font-size: 1.2rem;
            max-width: 800px;
            margin: 0 auto 30px;
            color: #555;
        }
        .content-wrapper {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
        }
        @media (max-width: 992px) {
            .content-wrapper {
                grid-template-columns: 1fr;
            }
        }
        .main-content {
            background-color: white;
            padding: 40px;
            border-radius: 15px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.05);
        }
        .sidebar {
            background-color: white;
            padding: 25px;
            border-radius: 15px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.05);
            align-self: start;
            position: sticky;
            top: 100px;
        }
        h1, h2, h3, h4 {
            color: #1a237e;
            margin-top: 1.5em;
            margin-bottom: 0.7em;
            line-height: 1.3;
        }
        h1 { font-size: 2.8rem; }
        h2 { font-size: 2.2rem; border-bottom: 3px solid #e8eaf6; padding-bottom: 10px; }
        h3 { font-size: 1.8rem; }
        h4 { font-size: 1.4rem; }
        p {
            margin-bottom: 1.5em;
            font-size: 1.1rem;
            color: #444;
        }
        strong {
            color: #1a237e;
            font-weight: 700;
        }
        em {
            color: #6a1b9a;
        }
        blockquote {
            border-left: 5px solid #6a11cb;
            padding-left: 25px;
            margin: 30px 0;
            font-style: italic;
            color: #555;
            background-color: #f5f5f5;
            padding: 20px;
            border-radius: 0 10px 10px 0;
        }
        .article-img {
            margin: 30px auto;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 15px 30px rgba(0,0,0,0.1);
            max-width: 800px;
        }
        .article-img img {
            width: 100%;
        }
        .img-caption {
            text-align: center;
            font-style: italic;
            color: #666;
            margin-top: 10px;
            font-size: 0.95rem;
        }
        .search-box {
            margin-bottom: 40px;
            background: #f1f8ff;
            padding: 25px;
            border-radius: 10px;
            border: 1px solid #bbdefb;
        }
        .search-box h3 {
            margin-top: 0;
        }
        .search-form {
            display: flex;
            margin-top: 15px;
        }
        .search-input {
            flex-grow: 1;
            padding: 14px 20px;
            border: 2px solid #bbdefb;
            border-radius: 50px 0 0 50px;
            font-size: 1rem;
            outline: none;
            transition: border-color 0.3s;
        }
        .search-input:focus {
            border-color: #1a237e;
        }
        .search-btn {
            background: linear-gradient(135deg, #1a237e, #283593);
            color: white;
            border: none;
            padding: 0 25px;
            border-radius: 0 50px 50px 0;
            cursor: pointer;
            font-weight: 600;
            transition: background 0.3s;
        }
        .search-btn:hover {
            background: linear-gradient(135deg, #283593, #3949ab);
        }
        .rating-widget, .comment-widget {
            background: #f9f9f9;
            padding: 25px;
            border-radius: 10px;
            margin-top: 40px;
            border: 1px solid #e0e0e0;
        }
        .rating-widget h3, .comment-widget h3 {
            margin-top: 0;
        }
        .stars {
            display: flex;
            gap: 10px;
            margin: 15px 0;
        }
        .star {
            font-size: 2rem;
            color: #ddd;
            cursor: pointer;
            transition: color 0.2s;
        }
        .star:hover,
        .star.active {
            color: #ffc107;
        }
        .rating-form, .comment-form {
            display: flex;
            flex-direction: column;
            gap: 15px;
            margin-top: 20px;
        }
        .rating-form input, .comment-form input, .comment-form textarea {
            padding: 12px 15px;
            border: 1px solid #ccc;
            border-radius: 8px;
            font-size: 1rem;
        }
        .comment-form textarea {
            min-height: 120px;
            resize: vertical;
        }
        footer {
            background: linear-gradient(90deg, #1a237e, #283593);
            color: white;
            padding: 60px 20px 30px;
            margin-top: 60px;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-logo {
            font-size: 1.8rem;
            font-weight: 800;
            margin-bottom: 20px;
        }
        .footer-links h4 {
            color: #bbdefb;
            border-bottom: 2px solid #3949ab;
            padding-bottom: 10px;
            margin-bottom: 20px;
        }
        .footer-links ul {
            list-style: none;
            padding-left: 0;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .footer-links a:hover {
            color: #4fc3f7;
            padding-left: 5px;
            transition: all 0.3s;
        }
        friend-link {
            display: block;
            background-color: rgba(255,255,255,0.05);
            padding: 20px;
            border-radius: 10px;
            margin-top: 30px;
        }
        friend-link h4 {
            color: #bbdefb;
            margin-top: 0;
        }
        friend-link ul {
            display: flex;
            flex-wrap: wrap;
            gap: 15px;
            list-style: none;
            padding-left: 0;
        }
        friend-link li a {
            background-color: rgba(255,255,255,0.1);
            padding: 8px 15px;
            border-radius: 20px;
            font-size: 0.9rem;
        }
        friend-link li a:hover {
            background-color: rgba(79, 195, 247, 0.3);
        }
        .copyright {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid rgba(255,255,255,0.1);
            font-size: 0.9rem;
            color: #bbdefb;
        }
        @media (max-width: 768px) {
            .header-container, .main-content, .sidebar, .search-box, .rating-widget, .comment-widget {
                padding-left: 15px;
                padding-right: 15px;
            }
            .main-content {
                padding: 25px;
            }
            h1 { font-size: 2.2rem; }
            h2 { font-size: 1.8rem; }
            h3 { font-size: 1.5rem; }
            h4 { font-size: 1.2rem; }
            section {
                padding: 40px 0;
            }
        }