:root {
            --primary: #1a237e;
            --primary-light: #534bae;
            --primary-dark: #000051;
            --accent: #ffab00;
            --accent-light: #ffdd4b;
            --accent-dark: #c67c00;
            --text-light: #f5f5f5;
            --text-dark: #212121;
            --bg-light: #ffffff;
            --bg-dark: #121212;
            --gray: #757575;
            --light-gray: #e0e0e0;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            --border-radius: 12px;
            --transition: all 0.3s ease;
            --max-width: 1200px;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: var(--text-dark);
            background-color: var(--bg-light);
            overflow-x: hidden;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            color: var(--text-light);
            padding: 1rem 0;
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-family: 'Waltograph', cursive, sans-serif;
            font-size: 2.5rem;
            font-weight: bold;
            color: var(--accent-light);
            text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
        }
        .my-logo:hover {
            color: white;
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .main-nav a {
            color: var(--text-light);
            font-weight: 600;
            padding: 0.5rem 1rem;
            border-radius: var(--border-radius);
        }
        .main-nav a:hover, .main-nav a:focus {
            background-color: rgba(255, 255, 255, 0.15);
            color: var(--accent-light);
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 0.5rem;
        }
        .breadcrumb {
            background-color: var(--light-gray);
            padding: 1rem 0;
            font-size: 0.9rem;
        }
        .breadcrumb .container {
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .breadcrumb a {
            color: var(--gray);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb i {
            margin: 0 0.5rem;
        }
        .hero {
            background: linear-gradient(rgba(26, 35, 126, 0.85), rgba(0, 0, 81, 0.9)), url('https://images.unsplash.com/photo-1534447677768-be436bb09401?ixlib=rb-4.0.3&auto=format&fit=crop&w=1790&q=80') center/cover no-repeat;
            color: white;
            padding: 4rem 0;
            text-align: center;
            margin-bottom: 3rem;
        }
        .hero h1 {
            font-size: 3.5rem;
            margin-bottom: 1rem;
            text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.5);
        }
        .hero p {
            font-size: 1.3rem;
            max-width: 800px;
            margin: 0 auto 2rem;
            opacity: 0.9;
        }
        .search-box {
            max-width: 600px;
            margin: 2rem auto;
            display: flex;
            border-radius: 50px;
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        .search-box input {
            flex: 1;
            padding: 1rem 1.5rem;
            border: none;
            font-size: 1.1rem;
        }
        .search-box button {
            background-color: var(--accent);
            color: var(--text-dark);
            border: none;
            padding: 1rem 2rem;
            font-weight: bold;
            cursor: pointer;
            transition: var(--transition);
        }
        .search-box button:hover {
            background-color: var(--accent-light);
        }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
            padding: 2rem 0;
        }
        article {
            background: white;
            padding: 2.5rem;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
        }
        .article-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            border-bottom: 2px solid var(--light-gray);
            padding-bottom: 1rem;
            margin-bottom: 2rem;
            color: var(--gray);
            font-size: 0.95rem;
        }
        .update-time {
            color: var(--primary);
            font-weight: bold;
        }
        h1, h2, h3, h4 {
            color: var(--primary-dark);
            margin-top: 2.5rem;
            margin-bottom: 1rem;
            line-height: 1.3;
        }
        h1 {
            font-size: 2.8rem;
            border-left: 6px solid var(--accent);
            padding-left: 1rem;
        }
        h2 {
            font-size: 2.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid var(--light-gray);
        }
        h3 {
            font-size: 1.8rem;
            color: var(--primary);
        }
        h4 {
            font-size: 1.4rem;
            color: var(--primary-light);
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        .lead {
            font-size: 1.3rem;
            font-weight: 500;
            color: var(--primary);
            background-color: #f0f4ff;
            padding: 1.5rem;
            border-radius: var(--border-radius);
            margin: 2rem 0;
        }
        .highlight {
            background-color: #fff8e1;
            border-left: 4px solid var(--accent);
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
        }
        .img-container {
            margin: 3rem auto;
            text-align: center;
        }
        .featured-img {
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            max-width: 900px;
            margin: 0 auto 1rem;
        }
        .caption {
            font-style: italic;
            color: var(--gray);
            font-size: 0.95rem;
        }
        ul, ol {
            margin-left: 2rem;
            margin-bottom: 1.5rem;
        }
        li {
            margin-bottom: 0.5rem;
        }
        blockquote {
            font-style: italic;
            color: var(--primary-light);
            border-left: 4px solid var(--accent);
            padding-left: 1.5rem;
            margin: 2.5rem 0;
            font-size: 1.2rem;
        }
        .related-links {
            background-color: #f5f5f5;
            padding: 1.5rem;
            border-radius: var(--border-radius);
            margin: 3rem 0;
        }
        .related-links h3 {
            margin-top: 0;
        }
        .related-links ul {
            list-style: none;
            margin-left: 0;
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 1rem;
        }
        .related-links li {
            background: white;
            padding: 1rem;
            border-radius: 8px;
            transition: var(--transition);
        }
        .related-links li:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow);
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }
        .widget {
            background: white;
            padding: 1.8rem;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
        }
        .widget h3 {
            margin-top: 0;
            font-size: 1.5rem;
            display: flex;
            align-items: center;
            gap: 0.7rem;
            color: var(--primary-dark);
        }
        .widget h3 i {
            color: var(--accent);
        }
        .rating-form, .comment-form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .stars {
            display: flex;
            gap: 0.5rem;
            font-size: 1.8rem;
            color: var(--light-gray);
            cursor: pointer;
            margin: 0.5rem 0;
        }
        .stars .active {
            color: var(--accent);
        }
        .form-group {
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }
        input, textarea, select {
            padding: 0.9rem;
            border: 1px solid var(--light-gray);
            border-radius: 8px;
            font-family: inherit;
            font-size: 1rem;
            transition: var(--transition);
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(26, 35, 126, 0.1);
        }
        button, .btn {
            background-color: var(--primary);
            color: white;
            border: none;
            padding: 1rem 1.8rem;
            border-radius: 8px;
            font-weight: bold;
            cursor: pointer;
            transition: var(--transition);
            text-align: center;
            display: inline-block;
        }
        button:hover, .btn:hover {
            background-color: var(--primary-light);
            transform: translateY(-3px);
        }
        .btn-accent {
            background-color: var(--accent);
            color: var(--text-dark);
        }
        .btn-accent:hover {
            background-color: var(--accent-light);
        }
        .site-footer {
            background-color: var(--primary-dark);
            color: var(--text-light);
            padding: 3rem 0 1.5rem;
            margin-top: 4rem;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2.5rem;
            margin-bottom: 2.5rem;
        }
        .footer-logo {
            font-size: 2.2rem;
            color: var(--accent-light);
            margin-bottom: 1rem;
        }
        .footer-links h4 {
            color: var(--accent-light);
            margin-top: 0;
            font-size: 1.3rem;
            border-bottom: 2px solid rgba(255, 255, 255, 0.1);
            padding-bottom: 0.7rem;
        }
        .footer-links ul {
            list-style: none;
            margin-left: 0;
        }
        .footer-links li {
            margin-bottom: 0.8rem;
        }
        .footer-links a {
            color: #ccc;
        }
        .footer-links a:hover {
            color: var(--accent-light);
            padding-left: 5px;
        }
        friend-link {
            display: block;
            background-color: rgba(255, 255, 255, 0.05);
            padding: 1.5rem;
            border-radius: var(--border-radius);
            margin-top: 1rem;
        }
        friend-link a {
            color: var(--accent-light);
            font-weight: bold;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: #aaa;
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            .main-content {
                grid-template-columns: 1fr;
            }
            .hero h1 {
                font-size: 2.8rem;
            }
            h1 {
                font-size: 2.5rem;
            }
            h2 {
                font-size: 2rem;
            }
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            .main-nav ul {
                position: fixed;
                top: 80px;
                right: -100%;
                flex-direction: column;
                background-color: var(--primary-dark);
                width: 80%;
                max-width: 300px;
                height: calc(100vh - 80px);
                padding: 2rem;
                transition: right 0.5s ease;
                box-shadow: -5px 0 15px rgba(0, 0, 0, 0.2);
                z-index: 999;
            }
            .main-nav.active ul {
                right: 0;
            }
            .main-nav a {
                display: block;
                padding: 1rem;
                border-radius: 8px;
            }
            .hero h1 {
                font-size: 2.3rem;
            }
            .hero p {
                font-size: 1.1rem;
            }
            article {
                padding: 1.8rem;
            }
        }
        @media (max-width: 576px) {
            .hero {
                padding: 3rem 0;
            }
            .hero h1 {
                font-size: 2rem;
            }
            .search-box {
                flex-direction: column;
                border-radius: var(--border-radius);
            }
            .search-box input, .search-box button {
                width: 100%;
                border-radius: 0;
            }
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.7rem;
            }
            h3 {
                font-size: 1.5rem;
            }
        }