:root {
            --primary: #2563eb;
            --primary-dark: #1d4ed8;
            --secondary: #7c3aed;
            --accent: #f59e0b;
            --light: #f8fafc;
            --dark: #1e293b;
            --gray: #64748b;
            --border: #e2e8f0;
            --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1);
            --radius: 8px;
            --transition: all 0.3s ease;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
            line-height: 1.7;
            color: var(--dark);
            background-color: var(--light);
            overflow-x: hidden;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        .container {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background-color: white;
            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: 2.2rem;
            font-weight: 900;
            color: var(--primary);
            letter-spacing: -1px;
            font-family: 'Comic Sans MS', cursive, sans-serif;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .my-logo:hover {
            opacity: 0.9;
        }
        .search-form {
            display: flex;
            max-width: 400px;
            width: 100%;
        }
        .search-form input {
            flex: 1;
            padding: 12px 16px;
            border: 2px solid var(--border);
            border-radius: var(--radius) 0 0 var(--radius);
            font-size: 1rem;
            outline: none;
        }
        .search-form input:focus {
            border-color: var(--primary);
        }
        .search-form button {
            background-color: var(--primary);
            color: white;
            border: none;
            padding: 0 20px;
            border-radius: 0 var(--radius) var(--radius) 0;
            cursor: pointer;
            transition: var(--transition);
        }
        .search-form button:hover {
            background-color: var(--primary-dark);
        }
        nav {
            background-color: var(--dark);
            padding: 0;
        }
        .nav-desktop {
            display: flex;
            list-style: none;
        }
        .nav-desktop li {
            position: relative;
        }
        .nav-desktop a {
            color: white;
            padding: 18px 22px;
            display: inline-block;
            font-weight: 500;
        }
        .nav-desktop a:hover {
            background-color: rgba(255,255,255,0.1);
            color: var(--accent);
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: var(--dark);
            font-size: 1.8rem;
            cursor: pointer;
            padding: 5px;
        }
        .breadcrumb {
            padding: 12px 0;
            background-color: #f1f5f9;
            font-size: 0.9rem;
        }
        .breadcrumb a {
            color: var(--gray);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        main {
            padding: 40px 0;
        }
        article {
            background-color: white;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 40px;
            margin-bottom: 40px;
        }
        h1 {
            font-size: 2.8rem;
            color: var(--dark);
            margin-bottom: 25px;
            line-height: 1.2;
        }
        h2 {
            font-size: 2rem;
            color: var(--primary-dark);
            margin: 45px 0 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--border);
        }
        h3 {
            font-size: 1.5rem;
            color: var(--dark);
            margin: 35px 0 15px;
        }
        h4 {
            font-size: 1.2rem;
            color: var(--secondary);
            margin: 25px 0 12px;
        }
        p {
            margin-bottom: 20px;
            text-align: justify;
        }
        .lead {
            font-size: 1.3rem;
            color: var(--gray);
            font-weight: 500;
            margin-bottom: 30px;
            padding-left: 20px;
            border-left: 4px solid var(--accent);
        }
        .highlight-box {
            background-color: #f0f9ff;
            border-left: 5px solid var(--primary);
            padding: 25px;
            margin: 30px 0;
            border-radius: 0 var(--radius) var(--radius) 0;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 25px;
            margin: 35px 0;
        }
        .stat-card {
            background: linear-gradient(135deg, #e0f2fe, #fef3c7);
            padding: 25px;
            border-radius: var(--radius);
            text-align: center;
            box-shadow: var(--shadow);
        }
        .stat-card i {
            font-size: 2.5rem;
            color: var(--primary);
            margin-bottom: 15px;
        }
        .stat-card h4 {
            color: var(--dark);
            margin: 10px 0;
        }
        .stat-card p {
            color: var(--gray);
            font-size: 0.95rem;
        }
        .image-container {
            margin: 35px 0;
            text-align: center;
        }
        .article-img {
            max-width: 100%;
            height: auto;
            border-radius: var(--radius);
            box-shadow: 0 10px 25px rgba(0,0,0,0.1);
        }
        .caption {
            font-size: 0.9rem;
            color: var(--gray);
            margin-top: 10px;
            font-style: italic;
        }
        ul, ol {
            margin-left: 25px;
            margin-bottom: 25px;
        }
        li {
            margin-bottom: 8px;
        }
        blockquote {
            border-left: 4px solid var(--accent);
            padding: 20px 25px;
            margin: 30px 0;
            background-color: #fffbeb;
            font-style: italic;
            color: var(--dark);
            border-radius: 0 var(--radius) var(--radius) 0;
        }
        .content-link {
            font-weight: 600;
            border-bottom: 1px dashed var(--secondary);
        }
        .content-link:hover {
            border-bottom-style: solid;
        }
        .interaction-section {
            margin-top: 50px;
            padding-top: 30px;
            border-top: 2px solid var(--border);
        }
        .rating-form, .comment-form {
            background-color: #f8fafc;
            padding: 25px;
            border-radius: var(--radius);
            margin-bottom: 30px;
        }
        .stars {
            display: flex;
            gap: 5px;
            margin: 15px 0;
        }
        .star {
            font-size: 1.8rem;
            color: #cbd5e1;
            cursor: pointer;
            transition: var(--transition);
        }
        .star:hover,
        .star.active {
            color: #fbbf24;
        }
        .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 15px;
            border: 2px solid var(--border);
            border-radius: var(--radius);
            font-family: inherit;
            font-size: 1rem;
            transition: var(--transition);
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            border-color: var(--primary);
            outline: none;
        }
        .btn {
            background-color: var(--primary);
            color: white;
            border: none;
            padding: 14px 28px;
            border-radius: var(--radius);
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn:hover {
            background-color: var(--primary-dark);
            transform: translateY(-2px);
        }
        .update-time {
            background-color: #f1f5f9;
            padding: 15px;
            border-radius: var(--radius);
            margin-top: 40px;
            font-size: 0.9rem;
            color: var(--gray);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        footer {
            background-color: var(--dark);
            color: white;
            padding: 50px 0 30px;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-section h3 {
            color: white;
            font-size: 1.3rem;
            margin-bottom: 20px;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 12px;
        }
        .footer-links a {
            color: #cbd5e1;
        }
        .footer-links a:hover {
            color: var(--accent);
            padding-left: 5px;
        }
        friend-link {
            display: block;
            background-color: rgba(255,255,255,0.05);
            padding: 20px;
            border-radius: var(--radius);
            margin: 15px 0;
            border-left: 4px solid var(--accent);
        }
        friend-link a {
            color: white;
            font-weight: 600;
        }
        friend-link a:hover {
            color: var(--accent);
        }
        .copyright {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid #334155;
            color: #94a3b8;
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            h1 { font-size: 2.4rem; }
            h2 { font-size: 1.8rem; }
            article { padding: 30px; }
            .header-top {
                flex-direction: column;
                gap: 20px;
            }
            .search-form {
                max-width: 100%;
            }
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            .nav-desktop {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background-color: var(--dark);
                box-shadow: 0 10px 15px -3px rgba(0,0,0,0.1);
            }
            .nav-desktop.active {
                display: flex;
            }
            .nav-desktop li {
                width: 100%;
            }
            .nav-desktop a {
                padding: 18px 20px;
                width: 100%;
                border-bottom: 1px solid #334155;
            }
            .stats-grid {
                grid-template-columns: 1fr;
            }
            .footer-content {
                grid-template-columns: 1fr;
                gap: 30px;
            }
        }
        @media (max-width: 480px) {
            h1 { font-size: 2rem; }
            h2 { font-size: 1.6rem; }
            article { padding: 20px; }
            .lead { font-size: 1.1rem; }
        }