* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        :root {
            --primary-color: #1a237e;
            --secondary-color: #4fc3f7;
            --accent-color: #ff5722;
            --dark-bg: #0d1338;
            --light-bg: #f5f7ff;
            --text-color: #333;
            --text-light: #777;
            --border-color: #ddd;
            --shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
            --transition: all 0.3s ease;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: var(--text-color);
            background-color: var(--light-bg);
            overflow-x: hidden;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: var(--primary-color);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent-color);
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .btn {
            display: inline-block;
            background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
            color: white;
            padding: 12px 28px;
            border-radius: 50px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            text-align: center;
        }
        .btn:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow);
            color: white;
        }
        header {
            background-color: white;
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 0;
        }
        .my-logo {
            font-size: 2rem;
            font-weight: 800;
            background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            letter-spacing: -1px;
        }
        .my-logo a {
            background: none;
        }
        nav {
            display: flex;
            align-items: center;
        }
        .nav-links {
            display: flex;
            list-style: none;
        }
        .nav-links li {
            margin-left: 30px;
        }
        .nav-links a {
            font-weight: 600;
            font-size: 1rem;
            position: relative;
        }
        .nav-links a:after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 0;
            width: 0;
            height: 2px;
            background-color: var(--accent-color);
            transition: var(--transition);
        }
        .nav-links a:hover:after {
            width: 100%;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: var(--primary-color);
        }
        .breadcrumb {
            padding: 15px 0;
            font-size: 0.9rem;
            color: var(--text-light);
            border-bottom: 1px solid var(--border-color);
            background-color: #f9f9f9;
        }
        .breadcrumb a {
            color: var(--text-light);
        }
        .breadcrumb a:hover {
            color: var(--primary-color);
        }
        main {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            padding: 40px 0;
        }
        article {
            background-color: white;
            padding: 40px;
            border-radius: 15px;
            box-shadow: var(--shadow);
        }
        aside {
            background-color: white;
            padding: 25px;
            border-radius: 15px;
            box-shadow: var(--shadow);
            align-self: start;
            position: sticky;
            top: 100px;
        }
        h1 {
            font-size: 2.8rem;
            color: var(--dark-bg);
            margin-bottom: 25px;
            line-height: 1.2;
            border-left: 5px solid var(--accent-color);
            padding-left: 20px;
        }
        h2 {
            font-size: 2rem;
            color: var(--primary-color);
            margin: 50px 0 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--border-color);
        }
        h3 {
            font-size: 1.6rem;
            color: var(--dark-bg);
            margin: 35px 0 15px;
        }
        h4 {
            font-size: 1.3rem;
            color: var(--text-color);
            margin: 25px 0 10px;
        }
        p {
            margin-bottom: 25px;
            font-size: 1.05rem;
            text-align: justify;
        }
        .lead {
            font-size: 1.2rem;
            font-weight: 500;
            color: var(--primary-color);
            background-color: #e3f2fd;
            padding: 20px;
            border-radius: 10px;
            margin-bottom: 30px;
            border-left: 4px solid var(--secondary-color);
        }
        .highlight {
            background-color: #fff8e1;
            padding: 25px;
            border-radius: 10px;
            margin: 30px 0;
            border-left: 4px solid #ffc107;
        }
        .note {
            background-color: #e8f5e9;
            padding: 15px;
            border-radius: 8px;
            margin: 20px 0;
            border-left: 4px solid #4caf50;
        }
        .quote {
            font-style: italic;
            border-left: 4px solid var(--accent-color);
            padding-left: 20px;
            margin: 30px 0;
            color: var(--text-light);
        }
        .keywords {
            background-color: #f5f5f5;
            padding: 15px;
            border-radius: 8px;
            margin: 20px 0;
            font-size: 0.95rem;
        }
        .keywords strong {
            color: var(--primary-color);
        }
        .last-updated {
            text-align: right;
            font-style: italic;
            color: var(--text-light);
            margin-top: 40px;
            padding-top: 20px;
            border-top: 1px dashed var(--border-color);
        }
        .article-img {
            width: 100%;
            border-radius: 10px;
            margin: 30px auto;
            box-shadow: 0 10px 20px rgba(0,0,0,0.1);
        }
        .img-caption {
            text-align: center;
            font-style: italic;
            color: var(--text-light);
            margin-top: 10px;
            font-size: 0.95rem;
        }
        .widget {
            margin-bottom: 30px;
        }
        .widget-title {
            font-size: 1.3rem;
            color: var(--primary-color);
            margin-bottom: 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--border-color);
        }
        .search-box {
            display: flex;
            margin-bottom: 25px;
        }
        .search-box input {
            flex: 1;
            padding: 12px 15px;
            border: 2px solid var(--border-color);
            border-radius: 50px 0 0 50px;
            outline: none;
        }
        .search-box button {
            background-color: var(--primary-color);
            color: white;
            border: none;
            padding: 0 20px;
            border-radius: 0 50px 50px 0;
            cursor: pointer;
        }
        .rating-widget {
            text-align: center;
        }
        .stars {
            font-size: 1.8rem;
            color: #ffc107;
            margin: 15px 0;
        }
        .stars i {
            cursor: pointer;
            margin: 0 2px;
        }
        .comment-form textarea {
            width: 100%;
            padding: 15px;
            border: 2px solid var(--border-color);
            border-radius: 10px;
            margin-bottom: 15px;
            resize: vertical;
            min-height: 120px;
            font-family: inherit;
        }
        .comment-form input {
            width: 100%;
            padding: 12px 15px;
            border: 2px solid var(--border-color);
            border-radius: 10px;
            margin-bottom: 15px;
        }
        .related-links {
            list-style: none;
        }
        .related-links li {
            margin-bottom: 12px;
            padding-bottom: 12px;
            border-bottom: 1px dashed var(--border-color);
        }
        .related-links li:last-child {
            border-bottom: none;
        }
        .related-links a {
            display: block;
            padding: 8px 0;
        }
        .related-links a:hover {
            padding-left: 10px;
        }
        footer {
            background-color: var(--dark-bg);
            color: white;
            padding: 50px 0 20px;
            margin-top: 50px;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-logo {
            font-size: 2rem;
            font-weight: 800;
            color: white;
            margin-bottom: 20px;
        }
        .footer-links h4 {
            color: white;
            margin-bottom: 20px;
            font-size: 1.2rem;
        }
        .footer-links ul {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 12px;
        }
        .footer-links a {
            color: #ccc;
        }
        .footer-links a:hover {
            color: var(--secondary-color);
            padding-left: 5px;
        }
        friend-link {
            display: block;
            background-color: rgba(255,255,255,0.05);
            padding: 15px;
            border-radius: 8px;
            margin-bottom: 15px;
            text-align: center;
        }
        friend-link a {
            color: var(--secondary-color);
            font-weight: 600;
        }
        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid rgba(255,255,255,0.1);
            color: #aaa;
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            main {
                grid-template-columns: 1fr;
            }
            aside {
                position: static;
            }
            h1 {
                font-size: 2.3rem;
            }
            h2 {
                font-size: 1.8rem;
            }
        }
        @media (max-width: 768px) {
            .header-content {
                flex-wrap: wrap;
            }
            .nav-links {
                display: none;
                width: 100%;
                flex-direction: column;
                margin-top: 20px;
            }
            .nav-links.active {
                display: flex;
            }
            .nav-links li {
                margin: 10px 0;
            }
            .hamburger {
                display: block;
            }
            article {
                padding: 25px;
            }
            .footer-content {
                grid-template-columns: 1fr;
                text-align: center;
            }
        }
        .nav-links a:hover,
        .related-links a:hover,
        .footer-links a:hover {
            transform: translateX(5px);
        }
        .btn:hover,
        .stars i:hover {
            transform: scale(1.05);
        }
        .article-img {
            transition: transform 0.5s ease;
        }
        .article-img:hover {
            transform: scale(1.02);
        }