:root {
            --primary-color: #2a4365;
            --secondary-color: #e53e3e;
            --accent-color: #38b2ac;
            --light-color: #f7fafc;
            --dark-color: #1a202c;
            --gray-color: #a0aec0;
            --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
            --transition: all 0.3s ease;
            --border-radius: 8px;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            color: var(--dark-color);
            background-color: #fff;
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }
        a {
            color: var(--secondary-color);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-color);
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background-color: var(--primary-color);
            color: var(--light-color);
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-top {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 0;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--light-color);
            display: flex;
            align-items: center;
        }
        .my-logo i {
            margin-right: 10px;
            color: var(--accent-color);
        }
        .my-logo:hover {
            color: var(--accent-color);
        }
        .search-form {
            display: flex;
            flex: 0 1 400px;
        }
        .search-form input {
            flex-grow: 1;
            padding: 10px 15px;
            border: none;
            border-radius: var(--border-radius) 0 0 var(--border-radius);
            font-size: 1rem;
        }
        .search-form button {
            background-color: var(--secondary-color);
            color: white;
            border: none;
            padding: 10px 20px;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
            cursor: pointer;
            transition: var(--transition);
        }
        .search-form button:hover {
            background-color: #c53030;
        }
        nav {
            background-color: #1a202c;
            padding: 10px 0;
        }
        .nav-links {
            display: flex;
            list-style: none;
            justify-content: space-around;
            flex-wrap: wrap;
        }
        .nav-links a {
            color: var(--light-color);
            padding: 8px 15px;
            border-radius: var(--border-radius);
            font-weight: 500;
        }
        .nav-links a:hover {
            background-color: var(--accent-color);
            color: white;
        }
        .hamburger {
            display: none;
            font-size: 1.5rem;
            cursor: pointer;
            color: white;
        }
        .mobile-menu {
            display: none;
            flex-direction: column;
            background-color: #1a202c;
            padding: 20px;
            position: absolute;
            top: 100%;
            left: 0;
            width: 100%;
            box-shadow: var(--shadow);
            z-index: 999;
        }
        .mobile-menu.active {
            display: flex;
        }
        .mobile-menu a {
            color: white;
            padding: 12px 20px;
            border-bottom: 1px solid #2d3748;
        }
        .mobile-menu a:hover {
            background-color: var(--accent-color);
        }
        .breadcrumb {
            padding: 15px 0;
            background-color: #edf2f7;
            font-size: 0.9rem;
        }
        .breadcrumb a {
            color: var(--primary-color);
        }
        .breadcrumb span {
            color: var(--gray-color);
        }
        main {
            flex: 1;
            padding: 30px 0;
        }
        article {
            background-color: white;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            padding: 30px;
            margin-bottom: 30px;
        }
        h1 {
            font-size: 2.5rem;
            color: var(--primary-color);
            margin-bottom: 20px;
            line-height: 1.2;
            border-bottom: 3px solid var(--accent-color);
            padding-bottom: 15px;
        }
        h2 {
            font-size: 2rem;
            color: var(--primary-color);
            margin: 30px 0 15px;
            padding-top: 10px;
        }
        h3 {
            font-size: 1.6rem;
            color: var(--secondary-color);
            margin: 25px 0 12px;
        }
        h4 {
            font-size: 1.3rem;
            color: var(--accent-color);
            margin: 20px 0 10px;
        }
        p {
            margin-bottom: 20px;
            text-align: justify;
        }
        .lead {
            font-size: 1.2rem;
            font-weight: 600;
            color: var(--dark-color);
            margin-bottom: 25px;
        }
        .highlight {
            background-color: #fed7d7;
            padding: 15px;
            border-left: 4px solid var(--secondary-color);
            margin: 20px 0;
            font-weight: 600;
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 5px;
        }
        .image-container {
            margin: 30px 0;
            text-align: center;
        }
        .featured-img {
            max-width: 100%;
            height: auto;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
        }
        .caption {
            font-style: italic;
            color: var(--gray-color);
            margin-top: 10px;
            font-size: 0.9rem;
        }
        .link-list {
            background-color: #f7fafc;
            padding: 20px;
            border-radius: var(--border-radius);
            margin: 25px 0;
        }
        .link-list ul {
            list-style-position: inside;
            margin-left: 20px;
        }
        .link-list li {
            margin-bottom: 8px;
        }
        .interactive-section {
            background-color: #e6fffa;
            border: 1px solid var(--accent-color);
            border-radius: var(--border-radius);
            padding: 25px;
            margin: 30px 0;
        }
        .interactive-section h3 {
            margin-top: 0;
        }
        .form-group {
            margin-bottom: 20px;
        }
        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 12px;
            border: 1px solid var(--gray-color);
            border-radius: var(--border-radius);
            font-family: inherit;
            font-size: 1rem;
        }
        .form-group textarea {
            min-height: 150px;
        }
        .rating {
            display: flex;
            flex-direction: row-reverse;
            justify-content: flex-end;
            margin: 10px 0;
        }
        .rating input {
            display: none;
        }
        .rating label {
            font-size: 2rem;
            color: #ddd;
            cursor: pointer;
            padding: 0 5px;
        }
        .rating input:checked ~ label,
        .rating label:hover,
        .rating label:hover ~ label {
            color: #f5b301;
        }
        .btn {
            display: inline-block;
            background-color: var(--secondary-color);
            color: white;
            padding: 12px 25px;
            border: none;
            border-radius: var(--border-radius);
            cursor: pointer;
            font-weight: 600;
            transition: var(--transition);
        }
        .btn:hover {
            background-color: #c53030;
            transform: translateY(-2px);
        }
        .update-time {
            text-align: right;
            font-size: 0.9rem;
            color: var(--gray-color);
            margin-top: 40px;
            padding-top: 20px;
            border-top: 1px solid #e2e8f0;
        }
        footer {
            background-color: var(--primary-color);
            color: var(--light-color);
            padding: 40px 0 20px;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 30px;
            margin-bottom: 30px;
        }
        .footer-section h4 {
            color: var(--accent-color);
            margin-bottom: 20px;
            font-size: 1.2rem;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .footer-links a {
            color: #cbd5e0;
        }
        .footer-links a:hover {
            color: white;
            padding-left: 5px;
        }
        friend-link {
            display: block;
            background-color: #2d3748;
            padding: 15px;
            border-radius: var(--border-radius);
            margin-bottom: 20px;
        }
        friend-link a {
            color: var(--accent-color);
            font-weight: 600;
        }
        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid #4a5568;
            font-size: 0.9rem;
            color: #a0aec0;
        }
        @media (max-width: 992px) {
            h1 { font-size: 2.2rem; }
            h2 { font-size: 1.8rem; }
            h3 { font-size: 1.5rem; }
            .header-top { flex-wrap: wrap; }
            .search-form { flex: 1 1 100%; order: 3; margin-top: 15px; }
        }
        @media (max-width: 768px) {
            .nav-links { display: none; }
            .hamburger { display: block; }
            h1 { font-size: 2rem; }
            h2 { font-size: 1.6rem; }
            h3 { font-size: 1.4rem; }
            article { padding: 20px; }
        }
        @media (max-width: 576px) {
            .container { padding: 0 15px; }
            h1 { font-size: 1.8rem; }
            .footer-content { grid-template-columns: 1fr; }
        }