:root {
            --primary-color: #2a2a72;
            --secondary-color: #009ffd;
            --accent-color: #ffa400;
            --dark-color: #0a0a23;
            --light-color: #f8f9fa;
            --text-color: #333;
            --gray-color: #6c757d;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            --border-radius: 8px;
            --transition: all 0.3s ease;
            --max-width: 1200px;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            color: var(--text-color);
            background-color: #f0f2f5;
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }
        a {
            text-decoration: none;
            color: var(--secondary-color);
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent-color);
        }
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(135deg, var(--primary-color), var(--dark-color));
            color: white;
            padding: 1rem 0;
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            color: white;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo i {
            color: var(--accent-color);
        }
        .my-logo:hover {
            transform: scale(1.05);
        }
        nav {
            display: flex;
            align-items: center;
        }
        .nav-links {
            display: flex;
            list-style: none;
            gap: 1.5rem;
        }
        .nav-links a {
            color: white;
            font-weight: 600;
            padding: 0.5rem 0.8rem;
            border-radius: var(--border-radius);
        }
        .nav-links a:hover {
            background-color: rgba(255, 255, 255, 0.1);
            color: var(--accent-color);
        }
        .hamburger {
            display: none;
            font-size: 1.5rem;
            background: none;
            border: none;
            color: white;
            cursor: pointer;
        }
        .breadcrumb {
            padding: 1rem 0;
            background-color: var(--light-color);
            border-bottom: 1px solid #ddd;
        }
        .breadcrumb ol {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
            gap: 0.5rem;
        }
        .breadcrumb li:not(:last-child)::after {
            content: "›";
            margin-left: 0.5rem;
            color: var(--gray-color);
        }
        main {
            flex: 1;
            padding: 2rem 0;
        }
        .article-header {
            text-align: center;
            margin-bottom: 2.5rem;
            padding-bottom: 1.5rem;
            border-bottom: 3px solid var(--secondary-color);
        }
        h1 {
            font-size: 2.8rem;
            color: var(--primary-color);
            margin-bottom: 1rem;
            line-height: 1.2;
        }
        .article-meta {
            display: flex;
            justify-content: center;
            gap: 1.5rem;
            color: var(--gray-color);
            font-size: 0.9rem;
        }
        .article-meta i {
            margin-right: 0.3rem;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
        }
        @media (max-width: 992px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
        }
        article {
            background: white;
            padding: 2rem;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
        }
        h2, h3, h4 {
            color: var(--primary-color);
            margin-top: 2rem;
            margin-bottom: 1rem;
            line-height: 1.3;
        }
        h2 {
            font-size: 2rem;
            border-left: 5px solid var(--accent-color);
            padding-left: 1rem;
        }
        h3 {
            font-size: 1.6rem;
        }
        h4 {
            font-size: 1.3rem;
        }
        p {
            margin-bottom: 1.2rem;
            text-align: justify;
        }
        .highlight {
            background-color: #fffacd;
            padding: 1.5rem;
            border-left: 4px solid var(--accent-color);
            margin: 1.5rem 0;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
        }
        .highlight strong {
            color: var(--primary-color);
        }
        .featured-image {
            width: 100%;
            max-height: 500px;
            object-fit: cover;
            border-radius: var(--border-radius);
            margin: 2rem 0;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }
        .featured-image:hover {
            transform: translateY(-5px);
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
        }
        emoji {
            font-size: 1.2em;
            margin-right: 0.3rem;
        }
        aside {
            background: white;
            padding: 1.5rem;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            height: fit-content;
        }
        .sidebar-section {
            margin-bottom: 2rem;
        }
        .sidebar-section h3 {
            font-size: 1.3rem;
            margin-bottom: 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid var(--secondary-color);
        }
        .form-group {
            margin-bottom: 1.2rem;
        }
        .form-group label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
            color: var(--primary-color);
        }
        .form-control {
            width: 100%;
            padding: 0.8rem;
            border: 1px solid #ccc;
            border-radius: var(--border-radius);
            font-size: 1rem;
            transition: var(--transition);
        }
        .form-control:focus {
            outline: none;
            border-color: var(--secondary-color);
            box-shadow: 0 0 0 3px rgba(0, 159, 253, 0.2);
        }
        .btn {
            display: inline-block;
            padding: 0.8rem 1.5rem;
            background: var(--secondary-color);
            color: white;
            border: none;
            border-radius: var(--border-radius);
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
        }
        .btn:hover {
            background: var(--primary-color);
            transform: translateY(-3px);
        }
        .rating-stars {
            display: flex;
            gap: 0.5rem;
            margin-bottom: 1rem;
        }
        .rating-stars input {
            display: none;
        }
        .rating-stars label {
            font-size: 1.8rem;
            color: #ddd;
            cursor: pointer;
            transition: var(--transition);
        }
        .rating-stars label:hover,
        .rating-stars label:hover ~ label,
        .rating-stars input:checked ~ label {
            color: var(--accent-color);
        }
        footer {
            background: var(--dark-color);
            color: white;
            padding: 2.5rem 0 1.5rem;
            margin-top: 3rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-section h3 {
            color: white;
            margin-bottom: 1.2rem;
            font-size: 1.3rem;
        }
        .friend-links {
            display: flex;
            flex-direction: column;
            gap: 0.8rem;
        }
        .friend-links a {
            color: #ccc;
            padding: 0.3rem 0;
            border-bottom: 1px dotted #444;
        }
        .friend-links a:hover {
            color: var(--accent-color);
            padding-left: 0.5rem;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #444;
            color: #aaa;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.7rem;
            }
            .header-content {
                flex-wrap: wrap;
            }
            .nav-links {
                display: none;
                flex-direction: column;
                width: 100%;
                background: var(--primary-color);
                position: absolute;
                top: 100%;
                left: 0;
                padding: 1rem;
                box-shadow: var(--shadow);
            }
            .nav-links.active {
                display: flex;
            }
            .hamburger {
                display: block;
            }
            article, aside {
                padding: 1.5rem;
            }
        }