:root {
            --primary-color: #1a237e;
            --primary-light: #534bae;
            --primary-dark: #000051;
            --accent-color: #ffab00;
            --accent-dark: #c67c00;
            --text-dark: #212121;
            --text-light: #757575;
            --text-on-primary: #ffffff;
            --background-light: #f5f5f5;
            --background-white: #ffffff;
            --border-color: #e0e0e0;
            --shadow-light: 0 2px 10px rgba(0,0,0,0.05);
            --shadow-medium: 0 4px 20px rgba(0,0,0,0.1);
            --font-main: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
            --font-heading: 'Georgia', 'Times New Roman', serif;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-main);
            color: var(--text-dark);
            background-color: var(--background-light);
            line-height: 1.7;
            font-size: 1.1rem;
            overflow-x: hidden;
        }
        a {
            color: var(--primary-color);
            text-decoration: none;
            transition: color 0.3s ease, background-color 0.3s ease;
        }
        a:hover {
            color: var(--accent-dark);
        }
        .container {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background-color: var(--primary-color);
            color: var(--text-on-primary);
            padding: 1rem 0;
            box-shadow: var(--shadow-medium);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-family: var(--font-heading);
            font-size: 2.2rem;
            font-weight: bold;
            color: var(--accent-color);
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo:hover {
            color: var(--text-on-primary);
        }
        .my-logo i {
            font-size: 2.5rem;
        }
        .nav-desktop {
            display: flex;
            gap: 2rem;
        }
        @media (max-width: 768px) {
            .nav-desktop {
                display: none;
            }
        }
        .nav-desktop a {
            color: var(--text-on-primary);
            font-weight: 500;
            padding: 0.5rem 1rem;
            border-radius: 4px;
        }
        .nav-desktop a:hover {
            background-color: rgba(255, 255, 255, 0.1);
            color: var(--accent-color);
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: var(--text-on-primary);
            font-size: 1.8rem;
            cursor: pointer;
            padding: 0.5rem;
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
        }
        .nav-mobile {
            display: none;
            flex-direction: column;
            background-color: var(--primary-dark);
            position: absolute;
            top: 100%;
            left: 0;
            width: 100%;
            padding: 1rem;
            box-shadow: var(--shadow-medium);
            z-index: 999;
        }
        .nav-mobile.active {
            display: flex;
        }
        .nav-mobile a {
            color: var(--text-on-primary);
            padding: 1rem;
            border-bottom: 1px solid rgba(255,255,255,0.1);
        }
        .nav-mobile a:last-child {
            border-bottom: none;
        }
        .nav-mobile a:hover {
            background-color: var(--primary-light);
            color: var(--accent-color);
        }
        .breadcrumb {
            background-color: var(--background-white);
            padding: 1rem 0;
            border-bottom: 1px solid var(--border-color);
            font-size: 0.95rem;
        }
        .breadcrumb ol {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
        }
        .breadcrumb li:not(:last-child)::after {
            content: ">";
            margin: 0 10px;
            color: var(--text-light);
        }
        .breadcrumb a {
            color: var(--text-light);
        }
        .breadcrumb a:hover {
            color: var(--primary-color);
        }
        .breadcrumb li:last-child a {
            color: var(--primary-color);
            font-weight: bold;
        }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
            padding: 3rem 0;
        }
        @media (max-width: 992px) {
            .main-content {
                grid-template-columns: 1fr;
            }
        }
        .article-content {
            background-color: var(--background-white);
            padding: 2.5rem;
            border-radius: 12px;
            box-shadow: var(--shadow-light);
        }
        h1, h2, h3, h4 {
            font-family: var(--font-heading);
            color: var(--primary-dark);
            margin-top: 2.5rem;
            margin-bottom: 1rem;
            line-height: 1.3;
        }
        h1 {
            font-size: 3rem;
            border-bottom: 3px solid var(--accent-color);
            padding-bottom: 1rem;
            margin-top: 0;
        }
        h2 {
            font-size: 2.2rem;
            border-left: 5px solid var(--primary-color);
            padding-left: 1rem;
        }
        h3 {
            font-size: 1.8rem;
            color: var(--primary-light);
        }
        h4 {
            font-size: 1.4rem;
            color: var(--text-dark);
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        .lead {
            font-size: 1.3rem;
            font-weight: 500;
            color: var(--text-light);
            margin-bottom: 2rem;
            padding-left: 1rem;
            border-left: 4px solid var(--accent-color);
        }
        .highlight {
            background-color: rgba(255, 171, 0, 0.1);
            padding: 1.5rem;
            border-radius: 8px;
            margin: 2rem 0;
            border-left: 4px solid var(--accent-color);
        }
        strong {
            color: var(--primary-dark);
            font-weight: 700;
        }
        em {
            color: var(--text-light);
            font-style: italic;
        }
        ul, ol {
            margin-left: 2rem;
            margin-bottom: 1.5rem;
        }
        li {
            margin-bottom: 0.75rem;
        }
        .article-image {
            width: 100%;
            max-width: 800px;
            height: auto;
            border-radius: 10px;
            margin: 2.5rem auto;
            display: block;
            box-shadow: var(--shadow-medium);
            transition: transform 0.5s ease;
        }
        .article-image:hover {
            transform: scale(1.02);
        }
        .img-caption {
            text-align: center;
            font-style: italic;
            color: var(--text-light);
            margin-top: 0.5rem;
            font-size: 0.95rem;
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }
        .widget {
            background-color: var(--background-white);
            padding: 1.8rem;
            border-radius: 12px;
            box-shadow: var(--shadow-light);
        }
        .widget h3 {
            font-size: 1.5rem;
            margin-top: 0;
            margin-bottom: 1.5rem;
            color: var(--primary-color);
            padding-bottom: 0.75rem;
            border-bottom: 2px solid var(--border-color);
        }
        .search-form {
            display: flex;
        }
        .search-input {
            flex-grow: 1;
            padding: 0.9rem 1.2rem;
            border: 2px solid var(--border-color);
            border-right: none;
            border-radius: 8px 0 0 8px;
            font-size: 1rem;
            transition: border-color 0.3s;
        }
        .search-input:focus {
            outline: none;
            border-color: var(--primary-light);
        }
        .search-btn {
            background-color: var(--primary-color);
            color: white;
            border: none;
            padding: 0 1.5rem;
            border-radius: 0 8px 8px 0;
            cursor: pointer;
            transition: background-color 0.3s;
        }
        .search-btn:hover {
            background-color: var(--primary-dark);
        }
        .rating-container {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 1rem;
        }
        .stars {
            display: flex;
            gap: 0.5rem;
            font-size: 1.8rem;
            color: #ffc107;
            cursor: pointer;
        }
        .star:hover,
        .star.active {
            color: var(--accent-dark);
            transform: scale(1.1);
        }
        .rating-form {
            width: 100%;
        }
        .rating-form label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: bold;
        }
        .rating-form select,
        .rating-form textarea {
            width: 100%;
            padding: 0.8rem;
            margin-bottom: 1rem;
            border: 1px solid var(--border-color);
            border-radius: 6px;
            font-family: var(--font-main);
        }
        .rating-form button {
            width: 100%;
            padding: 1rem;
            background-color: var(--primary-color);
            color: white;
            border: none;
            border-radius: 8px;
            font-weight: bold;
            cursor: pointer;
            transition: background-color 0.3s;
        }
        .rating-form button:hover {
            background-color: var(--primary-dark);
        }
        .comment-form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .comment-form input,
        .comment-form textarea {
            padding: 0.9rem;
            border: 1px solid var(--border-color);
            border-radius: 6px;
            font-family: var(--font-main);
            font-size: 1rem;
        }
        .comment-form textarea {
            min-height: 120px;
            resize: vertical;
        }
        .comment-form button {
            padding: 1rem;
            background-color: var(--accent-color);
            color: var(--text-dark);
            border: none;
            border-radius: 8px;
            font-weight: bold;
            cursor: pointer;
            transition: background-color 0.3s;
        }
        .comment-form button:hover {
            background-color: var(--accent-dark);
            color: white;
        }
        .related-links {
            list-style: none;
            margin-left: 0;
        }
        .related-links li {
            margin-bottom: 0.8rem;
            padding-left: 1.5rem;
            position: relative;
        }
        .related-links li:before {
            content: "🔗";
            position: absolute;
            left: 0;
        }
        .related-links a {
            display: block;
            padding: 0.8rem;
            background-color: #f9f9f9;
            border-radius: 6px;
            border: 1px solid transparent;
        }
        .related-links a:hover {
            background-color: #e3f2fd;
            border-color: var(--primary-light);
        }
        .site-footer {
            background-color: var(--primary-dark);
            color: var(--text-on-primary);
            padding: 3rem 0 1.5rem;
            margin-top: 3rem;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2.5rem;
        }
        .footer-logo {
            font-size: 2rem;
            font-weight: bold;
            color: var(--accent-color);
            margin-bottom: 1rem;
        }
        .footer-links h4 {
            color: var(--accent-color);
            font-size: 1.3rem;
            margin-top: 0;
            border-bottom: 1px solid rgba(255,255,255,0.1);
            padding-bottom: 0.5rem;
        }
        .footer-links ul {
            list-style: none;
            margin-left: 0;
        }
        .footer-links li {
            margin-bottom: 0.7rem;
        }
        .footer-links a {
            color: rgba(255,255,255,0.8);
        }
        .footer-links a:hover {
            color: var(--accent-color);
            padding-left: 5px;
        }
        friend-link {
            display: block;
            margin: 1.5rem 0;
            padding: 1rem;
            background-color: rgba(255,255,255,0.05);
            border-radius: 8px;
            border-left: 4px solid var(--accent-color);
        }
        .copyright {
            text-align: center;
            margin-top: 3rem;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(255,255,255,0.1);
            color: rgba(255,255,255,0.6);
            font-size: 0.9rem;
        }
        .text-center { text-align: center; }
        .mt-2 { margin-top: 2rem; }
        .mb-2 { margin-bottom: 2rem; }
        .py-2 { padding-top: 2rem; padding-bottom: 2rem; }
        @media (max-width: 768px) {
            h1 { font-size: 2.5rem; }
            h2 { font-size: 2rem; }
            h3 { font-size: 1.6rem; }
            .article-content { padding: 1.5rem; }
            .main-content { padding: 1.5rem 0; }
            .widget { padding: 1.5rem; }
        }