* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        :root {
            --primary: #2A4365; 
            --secondary: #C53030; 
            --accent: #38A169; 
            --light: #F7FAFC;
            --dark: #1A202C;
            --gray: #718096;
            --transition: all 0.3s ease;
        }
        body {
            background-color: #f8f9fa;
            color: #333;
            line-height: 1.7;
            overflow-x: hidden;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--secondary);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(135deg, var(--primary) 0%, #1A365D 100%);
            color: white;
            padding: 1rem 0;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 800;
            background: linear-gradient(90deg, #fff 30%, var(--accent) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            letter-spacing: -1px;
        }
        .my-logo a {
            background: none;
            -webkit-text-fill-color: inherit;
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .main-nav a {
            color: white;
            font-weight: 600;
            padding: 0.5rem 0;
            position: relative;
        }
        .main-nav a:hover {
            color: var(--accent);
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background-color: var(--accent);
            transition: width 0.3s ease;
        }
        .main-nav a:hover::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: white;
            cursor: pointer;
        }
        .breadcrumb {
            background-color: var(--light);
            padding: 1rem 0;
            border-bottom: 1px solid #e2e8f0;
            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 .separator {
            color: var(--gray);
        }
        .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: white;
            padding: 2.5rem;
            border-radius: 12px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
        }
        .article-header {
            margin-bottom: 2.5rem;
            border-bottom: 2px solid var(--light);
            padding-bottom: 1.5rem;
        }
        h1 {
            color: var(--primary);
            font-size: 2.8rem;
            line-height: 1.2;
            margin-bottom: 1rem;
        }
        .article-meta {
            color: var(--gray);
            font-size: 0.95rem;
            display: flex;
            flex-wrap: wrap;
            gap: 1.5rem;
            align-items: center;
        }
        .last-updated {
            background: var(--light);
            padding: 0.3rem 0.8rem;
            border-radius: 20px;
            font-weight: 600;
            color: var(--dark);
        }
        h2 {
            color: var(--secondary);
            font-size: 2rem;
            margin: 2.5rem 0 1.2rem 0;
            padding-top: 1rem;
            border-top: 1px dashed #e2e8f0;
        }
        h3 {
            color: var(--primary);
            font-size: 1.6rem;
            margin: 2rem 0 1rem 0;
        }
        h4 {
            color: #4A5568;
            font-size: 1.3rem;
            margin: 1.8rem 0 0.8rem 0;
        }
        p {
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
            text-align: justify;
        }
        .intro {
            font-size: 1.3rem;
            color: var(--dark);
            background: linear-gradient(to right, var(--light) 0%, transparent 100%);
            padding: 1.5rem;
            border-left: 5px solid var(--accent);
            margin-bottom: 2.5rem;
            border-radius: 0 8px 8px 0;
        }
        .highlight-box {
            background-color: #EBF8FF;
            border-left: 4px solid #4299E1;
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 8px 8px 0;
        }
        .article-image {
            margin: 2.5rem auto;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
            max-width: 800px;
        }
        .article-image figcaption {
            text-align: center;
            font-style: italic;
            color: var(--gray);
            padding: 0.8rem;
            font-size: 0.95rem;
            background-color: #fafafa;
        }
        .internal-link {
            color: var(--accent);
            font-weight: 600;
            border-bottom: 1px dotted var(--accent);
        }
        .internal-link:hover {
            border-bottom: 2px solid var(--accent);
        }
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }
        .sidebar-widget {
            background: white;
            padding: 1.8rem;
            border-radius: 12px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
        }
        .widget-title {
            color: var(--primary);
            font-size: 1.4rem;
            margin-bottom: 1.2rem;
            padding-bottom: 0.7rem;
            border-bottom: 2px solid var(--light);
        }
        .search-form {
            display: flex;
        }
        .search-form input {
            flex-grow: 1;
            padding: 0.9rem 1.2rem;
            border: 2px solid #e2e8f0;
            border-radius: 8px 0 0 8px;
            font-size: 1rem;
            transition: var(--transition);
        }
        .search-form input:focus {
            outline: none;
            border-color: var(--accent);
        }
        .search-form button {
            background: var(--primary);
            color: white;
            border: none;
            padding: 0 1.5rem;
            border-radius: 0 8px 8px 0;
            cursor: pointer;
            transition: var(--transition);
        }
        .search-form button:hover {
            background: var(--secondary);
        }
        .comment-form, .rating-form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .form-group {
            display: flex;
            flex-direction: column;
        }
        .form-group label {
            margin-bottom: 0.5rem;
            font-weight: 600;
            color: var(--dark);
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            padding: 0.9rem;
            border: 2px solid #e2e8f0;
            border-radius: 8px;
            font-size: 1rem;
            transition: var(--transition);
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            outline: none;
            border-color: var(--accent);
        }
        .submit-btn {
            background: linear-gradient(to right, var(--primary), #2C5282);
            color: white;
            border: none;
            padding: 1rem 2rem;
            border-radius: 8px;
            font-weight: 700;
            cursor: pointer;
            transition: var(--transition);
            align-self: flex-start;
        }
        .submit-btn:hover {
            background: linear-gradient(to right, var(--secondary), #C53030);
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(197, 48, 48, 0.3);
        }
        .star-rating {
            display: flex;
            flex-direction: row-reverse;
            justify-content: flex-end;
            gap: 0.3rem;
            font-size: 1.8rem;
        }
        .star-rating input {
            display: none;
        }
        .star-rating label {
            color: #CBD5E0;
            cursor: pointer;
            transition: color 0.2s;
        }
        .star-rating input:checked ~ label,
        .star-rating label:hover,
        .star-rating label:hover ~ label {
            color: #F6E05E;
        }
        .site-footer {
            background: var(--dark);
            color: #CBD5E0;
            padding: 3rem 0 1.5rem;
            margin-top: 3rem;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2.5rem;
            margin-bottom: 2.5rem;
        }
        .footer-logo {
            font-size: 2rem;
            font-weight: 800;
            color: white;
            margin-bottom: 1rem;
        }
        .footer-links h4 {
            color: white;
            margin-bottom: 1.2rem;
            font-size: 1.2rem;
        }
        .footer-links ul {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 0.8rem;
        }
        .footer-links a {
            color: #A0AEC0;
        }
        .footer-links a:hover {
            color: var(--accent);
            padding-left: 5px;
        }
        friend-link {
            display: block;
            background: rgba(255, 255, 255, 0.05);
            padding: 1.2rem;
            border-radius: 8px;
            margin-top: 1rem;
        }
        friend-link a {
            color: #38B2AC;
            font-weight: 600;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #2D3748;
            font-size: 0.9rem;
            color: #718096;
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            .main-nav {
                position: fixed;
                top: 70px;
                right: -100%;
                background: var(--primary);
                width: 280px;
                height: calc(100vh - 70px);
                transition: right 0.4s ease;
                padding: 2rem;
                box-shadow: -5px 0 15px rgba(0, 0, 0, 0.1);
                z-index: 999;
            }
            .main-nav.active {
                right: 0;
            }
            .main-nav ul {
                flex-direction: column;
                gap: 1.5rem;
            }
            .article-content {
                padding: 1.5rem;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            h3 {
                font-size: 1.5rem;
            }
            .sidebar {
                order: -1;
            }
        }
        @media print {
            .site-header, .sidebar, .site-footer, .breadcrumb, .search-form, .comment-form, .rating-form {
                display: none;
            }
            .article-content {
                box-shadow: none;
                padding: 0;
            }
            body {
                background: white;
                color: black;
                font-size: 12pt;
            }
            a {
                color: black;
                text-decoration: underline;
            }
            h1, h2, h3 {
                color: black;
            }
        }