* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
            line-height: 1.7;
            color: #333;
            background: linear-gradient(135deg, #f5f7fa 0%, #e4edf5 100%);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        .site-header {
            background: linear-gradient(90deg, #1a2980, #26d0ce);
            color: white;
            padding: 1rem 2rem;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            max-width: 1400px;
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 1.5rem;
        }
        .my-logo {
            font-family: 'Arial Black', sans-serif;
            font-size: 2.2rem;
            text-decoration: none;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 0.75rem;
            transition: transform 0.3s ease;
        }
        .my-logo:hover {
            transform: scale(1.05);
        }
        .my-logo i {
            color: #4dffea;
            font-size: 2.5rem;
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
            flex-wrap: wrap;
        }
        .main-nav a {
            color: white;
            text-decoration: none;
            font-weight: 600;
            font-size: 1.1rem;
            padding: 0.5rem 0;
            position: relative;
            transition: color 0.3s;
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 3px;
            background-color: #4dffea;
            transition: width 0.3s ease;
        }
        .main-nav a:hover {
            color: #4dffea;
        }
        .main-nav a:hover::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 0.5rem;
        }
        .breadcrumb {
            background-color: #e9f5ff;
            padding: 0.8rem 2rem;
            border-bottom: 1px solid #d0e7ff;
            font-size: 0.95rem;
        }
        .breadcrumb ol {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            max-width: 1400px;
            margin: 0 auto;
            gap: 0.5rem;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '›';
            margin-left: 0.5rem;
            color: #666;
        }
        .breadcrumb a {
            color: #1a2980;
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .main-content {
            flex: 1;
            max-width: 1400px;
            width: 100%;
            margin: 2rem auto;
            padding: 0 2rem;
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
        }
        .article-container {
            background: white;
            border-radius: 16px;
            box-shadow: 0 8px 30px rgba(0,0,0,0.08);
            padding: 3rem;
            overflow: hidden;
        }
        h1 {
            font-size: 3.2rem;
            color: #1a2980;
            margin-bottom: 1.5rem;
            line-height: 1.2;
            border-bottom: 4px solid #26d0ce;
            padding-bottom: 1rem;
        }
        h2 {
            font-size: 2.2rem;
            color: #2c3e50;
            margin: 3rem 0 1.5rem;
            padding-top: 1rem;
            border-top: 2px dashed #eaeaea;
        }
        h3 {
            font-size: 1.7rem;
            color: #34495e;
            margin: 2.5rem 0 1rem;
        }
        h4 {
            font-size: 1.3rem;
            color: #4a6572;
            margin: 2rem 0 1rem;
        }
        p {
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
            color: #444;
            text-align: justify;
        }
        .lead {
            font-size: 1.3rem;
            font-weight: 500;
            color: #2c3e50;
            background: #f0f9ff;
            padding: 1.5rem;
            border-radius: 10px;
            border-left: 5px solid #26d0ce;
            margin-bottom: 2.5rem;
        }
        strong {
            color: #1a2980;
            font-weight: 700;
        }
        em {
            color: #e74c3c;
            font-style: italic;
        }
        .highlight {
            background: linear-gradient(120deg, #a1c4fd80, #c2e9fb80);
            padding: 0.2rem 0.5rem;
            border-radius: 4px;
        }
        .article-container a {
            color: #2980b9;
            text-decoration: none;
            border-bottom: 1px dotted #2980b9;
            transition: all 0.3s;
        }
        .article-container a:hover {
            color: #1a2980;
            border-bottom: 2px solid #1a2980;
        }
        .article-image {
            width: 100%;
            max-width: 800px;
            height: auto;
            border-radius: 12px;
            margin: 2.5rem auto;
            display: block;
            box-shadow: 0 6px 20px rgba(0,0,0,0.1);
            transition: transform 0.5s ease;
        }
        .article-image:hover {
            transform: scale(1.02);
        }
        .img-caption {
            text-align: center;
            font-style: italic;
            color: #666;
            margin-top: 0.5rem;
            font-size: 0.95rem;
        }
        ul, ol {
            margin: 1.5rem 0 1.5rem 2rem;
        }
        li {
            margin-bottom: 0.8rem;
            padding-left: 0.5rem;
        }
        blockquote {
            border-left: 5px solid #26d0ce;
            background: #f8fdff;
            padding: 1.5rem 2rem;
            margin: 2.5rem 0;
            border-radius: 0 10px 10px 0;
            font-style: italic;
            color: #2c3e50;
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }
        .widget {
            background: white;
            border-radius: 12px;
            padding: 1.8rem;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        }
        .widget h3 {
            font-size: 1.4rem;
            margin-top: 0;
            color: #1a2980;
            display: flex;
            align-items: center;
            gap: 0.75rem;
            border-bottom: 2px solid #f0f0f0;
            padding-bottom: 0.8rem;
        }
        .widget h3 i {
            color: #26d0ce;
        }
        .search-form {
            display: flex;
            margin-top: 1rem;
        }
        .search-form input {
            flex: 1;
            padding: 0.9rem 1.2rem;
            border: 2px solid #ddd;
            border-radius: 8px 0 0 8px;
            font-size: 1rem;
            outline: none;
            transition: border-color 0.3s;
        }
        .search-form input:focus {
            border-color: #26d0ce;
        }
        .search-form button {
            background: linear-gradient(90deg, #26d0ce, #1a2980);
            color: white;
            border: none;
            padding: 0 1.5rem;
            border-radius: 0 8px 8px 0;
            cursor: pointer;
            font-weight: 600;
            transition: opacity 0.3s;
        }
        .search-form button:hover {
            opacity: 0.9;
        }
        .rating-stars {
            display: flex;
            gap: 0.5rem;
            margin: 1.2rem 0;
            font-size: 1.8rem;
            color: #ffd700;
        }
        .rating-stars i {
            cursor: pointer;
            transition: transform 0.2s;
        }
        .rating-stars i:hover {
            transform: scale(1.2);
        }
        .comment-form textarea {
            width: 100%;
            height: 120px;
            padding: 1rem;
            border: 2px solid #ddd;
            border-radius: 8px;
            font-family: inherit;
            font-size: 1rem;
            margin: 1rem 0;
            resize: vertical;
            transition: border-color 0.3s;
        }
        .comment-form textarea:focus {
            border-color: #26d0ce;
            outline: none;
        }
        .form-submit {
            background: linear-gradient(90deg, #1a2980, #26d0ce);
            color: white;
            border: none;
            padding: 0.9rem 2rem;
            border-radius: 8px;
            font-weight: 600;
            cursor: pointer;
            transition: transform 0.3s, box-shadow 0.3s;
            width: 100%;
        }
        .form-submit:hover {
            transform: translateY(-3px);
            box-shadow: 0 5px 15px rgba(26, 41, 128, 0.3);
        }
        .site-footer {
            background: linear-gradient(90deg, #1a2980, #2c3e50);
            color: white;
            padding: 3rem 2rem 1.5rem;
            margin-top: 4rem;
        }
        .footer-container {
            max-width: 1400px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 3rem;
        }
        .footer-section h4 {
            color: #4dffea;
            font-size: 1.4rem;
            margin-bottom: 1.5rem;
            border-bottom: 2px solid rgba(77, 255, 234, 0.3);
            padding-bottom: 0.5rem;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 0.8rem;
        }
        .footer-links a {
            color: #ddd;
            text-decoration: none;
            transition: color 0.3s, padding-left 0.3s;
            display: block;
        }
        .footer-links a:hover {
            color: #4dffea;
            padding-left: 0.5rem;
        }
        friend-link {
            display: block;
            background: rgba(255,255,255,0.1);
            padding: 1.5rem;
            border-radius: 10px;
            margin: 1.5rem 0;
        }
        friend-link h5 {
            color: #4dffea;
            margin-bottom: 1rem;
            font-size: 1.2rem;
        }
        .friend-links {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
        }
        .friend-links a {
            background: rgba(255,255,255,0.15);
            color: white;
            padding: 0.5rem 1rem;
            border-radius: 6px;
            text-decoration: none;
            transition: background 0.3s, transform 0.3s;
        }
        .friend-links a:hover {
            background: rgba(77, 255, 234, 0.3);
            transform: translateY(-3px);
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            margin-top: 2rem;
            border-top: 1px solid rgba(255,255,255,0.2);
            color: #aaa;
            font-size: 0.9rem;
        }
        .last-updated {
            background: #e8f4fc;
            padding: 1rem;
            border-radius: 8px;
            margin: 2rem 0;
            font-size: 0.95rem;
            color: #555;
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }
        .last-updated i {
            color: #1a2980;
        }
        @media (max-width: 1024px) {
            .main-content {
                grid-template-columns: 1fr;
                gap: 2rem;
                padding: 0 1.5rem;
            }
            .article-container {
                padding: 2rem;
            }
            h1 {
                font-size: 2.7rem;
            }
            h2 {
                font-size: 2rem;
            }
        }
        @media (max-width: 768px) {
            .header-container {
                flex-direction: column;
                align-items: flex-start;
                gap: 1rem;
            }
            .hamburger {
                display: block;
                position: absolute;
                top: 1.5rem;
                right: 2rem;
            }
            .main-nav {
                width: 100%;
                display: none;
            }
            .main-nav.active {
                display: block;
            }
            .main-nav ul {
                flex-direction: column;
                gap: 1rem;
                padding: 1rem 0;
            }
            .breadcrumb {
                padding: 0.8rem 1.5rem;
            }
            .article-container {
                padding: 1.5rem;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            h3 {
                font-size: 1.5rem;
            }
            .footer-container {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
        }
        @media print {
            .site-header, .sidebar, .site-footer, .hamburger {
                display: none;
            }
            .main-content {
                grid-template-columns: 1fr;
                margin: 0;
                padding: 0;
            }
            .article-container {
                box-shadow: none;
                padding: 0;
            }
        }
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0,0,0,0);
            white-space: nowrap;
            border: 0;
        }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .article-container {
            animation: fadeIn 0.8s ease-out;
        }