* { 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: #333;
            background-color: #f8f9fa;
            max-width: 100%;
            overflow-x: hidden;
        }
        img { max-width: 100%; height: auto; display: block; }
        :root {
            --primary: #2c3e50;
            --secondary: #3498db;
            --accent: #e74c3c;
            --light: #ecf0f1;
            --dark: #2c3e50;
            --gray: #7f8c8d;
            --shadow: 0 4px 12px rgba(0,0,0,0.08);
            --transition: all 0.3s ease;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .text-center { text-align: center; }
        .bold { font-weight: 700; }
        .highlight { background-color: #fffacd; padding: 2px 5px; border-radius: 3px; }
        .site-header {
            background-color: var(--primary);
            color: white;
            padding: 1rem 0;
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo a {
            font-size: 1.8rem;
            font-weight: 800;
            color: white;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo i { color: var(--secondary); }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .main-nav a {
            color: var(--light);
            text-decoration: none;
            font-weight: 600;
            padding: 0.5rem;
            border-radius: 4px;
            transition: var(--transition);
        }
        .main-nav a:hover, .main-nav a:focus {
            background-color: var(--secondary);
            color: white;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.5rem;
            cursor: pointer;
        }
        .breadcrumb {
            padding: 1rem 0;
            background-color: var(--light);
            font-size: 0.9rem;
        }
        .breadcrumb ol {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
        }
        .breadcrumb li:not(:last-child)::after {
            content: "›";
            margin: 0 10px;
            color: var(--gray);
        }
        .breadcrumb a { color: var(--secondary); text-decoration: none; }
        .breadcrumb a:hover { text-decoration: underline; }
        .search-section {
            background: linear-gradient(to right, #4A6491, #2c3e50);
            padding: 2.5rem 0;
            margin-bottom: 2rem;
        }
        .search-container {
            max-width: 700px;
            margin: 0 auto;
        }
        .search-form {
            display: flex;
            border-radius: 50px;
            overflow: hidden;
            box-shadow: 0 8px 25px rgba(0,0,0,0.2);
        }
        .search-input {
            flex-grow: 1;
            padding: 1rem 1.5rem;
            border: none;
            font-size: 1.1rem;
        }
        .search-button {
            background-color: var(--accent);
            color: white;
            border: none;
            padding: 1rem 2rem;
            cursor: pointer;
            font-weight: 600;
            transition: var(--transition);
        }
        .search-button:hover {
            background-color: #c0392b;
        }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
            padding: 2rem 0;
        }
        @media (max-width: 992px) {
            .main-content { grid-template-columns: 1fr; }
        }
        article { background: white; padding: 2.5rem; border-radius: 12px; box-shadow: var(--shadow); }
        .article-header { margin-bottom: 2.5rem; border-bottom: 2px solid var(--light); padding-bottom: 1.5rem; }
        .article-header h1 {
            font-size: 2.8rem;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 1rem;
        }
        .meta-info {
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: var(--gray);
            font-size: 0.95rem;
            flex-wrap: wrap;
            gap: 1rem;
        }
        .last-updated i { color: var(--accent); margin-right: 5px; }
        h2 {
            font-size: 2rem;
            color: var(--primary);
            margin: 2.5rem 0 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 1px dashed #ddd;
        }
        h3 { font-size: 1.6rem; color: #2c3e50; margin: 2rem 0 1rem; }
        h4 { font-size: 1.3rem; color: #34495e; margin: 1.5rem 0 0.8rem; }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        .lead {
            font-size: 1.25rem;
            color: var(--dark);
            font-weight: 300;
            margin-bottom: 2rem;
            padding: 1rem;
            background-color: #f0f7ff;
            border-left: 5px solid var(--secondary);
            border-radius: 0 8px 8px 0;
        }
        .content-img {
            margin: 2rem auto;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 6px 15px rgba(0,0,0,0.1);
            max-width: 800px;
        }
        .content-img figcaption {
            text-align: center;
            font-style: italic;
            color: var(--gray);
            padding: 0.8rem;
            background-color: #f9f9f9;
        }
        ul, ol { margin-left: 2rem; margin-bottom: 1.5rem; }
        li { margin-bottom: 0.5rem; }
        a.content-link {
            color: var(--secondary);
            text-decoration: none;
            border-bottom: 1px dotted var(--secondary);
            transition: var(--transition);
        }
        a.content-link:hover {
            color: var(--accent);
            border-bottom-style: solid;
        }
        blockquote {
            border-left: 4px solid var(--accent);
            padding: 1rem 1.5rem;
            margin: 2rem 0;
            background-color: #fdf2f2;
            font-style: italic;
            border-radius: 0 8px 8px 0;
        }
        .stats-box {
            background: linear-gradient(135deg, #2c3e50, #4a6491);
            color: white;
            padding: 1.5rem;
            border-radius: 10px;
            margin: 2rem 0;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 1.5rem;
        }
        .stat-item { text-align: center; }
        .stat-number { font-size: 2.5rem; font-weight: 800; display: block; color: #f1c40f; }
        .sidebar-widget {
            background: white;
            padding: 1.8rem;
            border-radius: 10px;
            box-shadow: var(--shadow);
            margin-bottom: 2rem;
        }
        .sidebar-widget h3 {
            font-size: 1.4rem;
            margin-top: 0;
            padding-bottom: 0.8rem;
            border-bottom: 2px solid var(--light);
        }
        .widget-links ul { list-style: none; margin-left: 0; }
        .widget-links li { margin-bottom: 0.8rem; }
        .widget-links a {
            display: block;
            padding: 0.8rem;
            background-color: #f8f9fa;
            border-radius: 6px;
            text-decoration: none;
            color: var(--dark);
            transition: var(--transition);
            border-left: 4px solid transparent;
        }
        .widget-links a:hover {
            background-color: #e3f2fd;
            border-left-color: var(--secondary);
            padding-left: 1.2rem;
        }
        .interactive-section {
            background-color: #fff;
            border-radius: 12px;
            padding: 2rem;
            margin: 3rem 0;
            box-shadow: var(--shadow);
            border-top: 6px solid var(--secondary);
        }
        .rating-form, .comment-form {
            display: flex;
            flex-direction: column;
            gap: 1.2rem;
        }
        .star-rating {
            direction: rtl;
            display: inline-block;
            font-size: 2rem;
            unicode-bidi: bidi-override;
        }
        .star-rating input { display: none; }
        .star-rating label {
            color: #ddd;
            cursor: pointer;
            transition: var(--transition);
        }
        .star-rating label:hover,
        .star-rating label:hover ~ label,
        .star-rating input:checked ~ label {
            color: #f1c40f;
        }
        .form-group { display: flex; flex-direction: column; }
        .form-group label {
            font-weight: 600;
            margin-bottom: 0.5rem;
            color: var(--primary);
        }
        .form-control {
            padding: 0.9rem;
            border: 1px solid #ccc;
            border-radius: 6px;
            font-size: 1rem;
            transition: var(--transition);
        }
        .form-control:focus {
            outline: none;
            border-color: var(--secondary);
            box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.2);
        }
        .submit-btn {
            background-color: var(--secondary);
            color: white;
            border: none;
            padding: 1rem 1.8rem;
            border-radius: 6px;
            font-weight: 700;
            cursor: pointer;
            transition: var(--transition);
            align-self: flex-start;
        }
        .submit-btn:hover {
            background-color: #2980b9;
            transform: translateY(-2px);
        }
        .site-footer {
            background-color: var(--primary);
            color: var(--light);
            padding: 3rem 0 1.5rem;
            margin-top: 4rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-logo a { color: white; text-decoration: none; font-size: 1.8rem; font-weight: 800; }
        .footer-links h4 { color: white; margin-bottom: 1.2rem; font-size: 1.2rem; }
        .footer-links ul { list-style: none; margin-left: 0; }
        .footer-links li { margin-bottom: 0.7rem; }
        .footer-links a {
            color: #bdc3c7;
            text-decoration: none;
            transition: var(--transition);
        }
        .footer-links a:hover { color: white; padding-left: 5px; }
        friend-link {
            display: block;
            background-color: #34495e;
            padding: 1.5rem;
            border-radius: 8px;
            margin: 1.5rem 0;
        }
        friend-link a {
            color: #f1c40f;
            font-weight: 600;
            text-decoration: none;
        }
        friend-link a:hover { text-decoration: underline; }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #34495e;
            color: #95a5a6;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            .header-content { flex-wrap: wrap; }
            .main-nav {
                width: 100%;
                order: 3;
                margin-top: 1rem;
                display: none;
            }
            .main-nav.active { display: block; }
            .main-nav ul {
                flex-direction: column;
                gap: 0.5rem;
            }
            .hamburger { display: block; }
            .article-header h1 { font-size: 2.2rem; }
            h2 { font-size: 1.8rem; }
            h3 { font-size: 1.5rem; }
            article, .sidebar-widget, .interactive-section { padding: 1.5rem; }
            .search-form { flex-direction: column; border-radius: 12px; }
            .search-input, .search-button { width: 100%; border-radius: 0; }
            .stats-box { grid-template-columns: 1fr; }
        }