* { margin: 0; padding: 0; box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: #2c3e50;
            background: linear-gradient(135deg, #f5f7fa 0%, #e4edf5 100%);
            min-height: 100vh;
            max-width: 100vw;
            overflow-x: hidden;
        }
        a { color: #2980b9; text-decoration: none; transition: color 0.3s ease, transform 0.2s ease; }
        a:hover { color: #1a5276; transform: translateY(-1px); }
        img { max-width: 100%; height: auto; display: block; }
        ul, ol { padding-left: 2rem; margin: 1rem 0; }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }
        .site-header {
            background: linear-gradient(90deg, #1a237e, #283593);
            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;
        }
        .logo a {
            font-family: 'Georgia', serif;
            font-size: 2.2rem;
            font-weight: bold;
            color: #ffeb3b;
            text-shadow: 1px 1px 3px rgba(0,0,0,0.5);
            letter-spacing: 1px;
        }
        .logo a:hover { color: #ffd54f; }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .main-nav a {
            color: #e3f2fd;
            font-weight: 600;
            padding: 0.5rem 1rem;
            border-radius: 4px;
        }
        .main-nav a:hover, .main-nav a.active {
            background-color: rgba(255, 255, 255, 0.15);
            color: #fff;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 0.5rem;
        }
        .breadcrumb {
            background-color: #f8f9fa;
            padding: 1rem 0;
            font-size: 0.9rem;
            border-bottom: 1px solid #e9ecef;
        }
        .breadcrumb ol {
            display: flex;
            list-style: none;
            padding-left: 0;
            margin: 0;
            flex-wrap: wrap;
        }
        .breadcrumb li:not(:last-child)::after {
            content: ">";
            margin: 0 10px;
            color: #6c757d;
        }
        .breadcrumb a { color: #495057; }
        .breadcrumb a:hover { text-decoration: underline; }
        .search-module {
            background: #fff;
            padding: 2rem;
            margin: 2rem auto;
            border-radius: 12px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            max-width: 800px;
            border-left: 5px solid #4caf50;
        }
        .search-module h2 {
            color: #1b5e20;
            margin-bottom: 1rem;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .search-form {
            display: flex;
            gap: 10px;
        }
        .search-input {
            flex: 1;
            padding: 15px;
            border: 2px solid #c8e6c9;
            border-radius: 8px;
            font-size: 1rem;
            transition: border-color 0.3s;
        }
        .search-input:focus {
            outline: none;
            border-color: #4caf50;
            box-shadow: 0 0 0 3px rgba(76, 175, 80, 0.2);
        }
        .search-btn {
            background: linear-gradient(to right, #4caf50, #2e7d32);
            color: white;
            border: none;
            padding: 0 25px;
            border-radius: 8px;
            font-weight: bold;
            cursor: pointer;
            transition: all 0.3s;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .search-btn:hover {
            background: linear-gradient(to right, #43a047, #1b5e20);
            transform: scale(1.03);
        }
        .main-content {
            padding: 3rem 0;
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
        }
        .article-content {
            background: white;
            padding: 2.5rem;
            border-radius: 16px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.06);
        }
        .article-content h1 {
            font-size: 2.8rem;
            color: #1a237e;
            margin-bottom: 1.5rem;
            line-height: 1.2;
            border-bottom: 3px solid #ffeb3b;
            padding-bottom: 0.5rem;
        }
        .article-meta {
            color: #7b8793;
            margin-bottom: 2rem;
            display: flex;
            flex-wrap: wrap;
            gap: 1.5rem;
            font-size: 0.95rem;
        }
        .meta-item { display: flex; align-items: center; gap: 8px; }
        .article-content h2 {
            font-size: 2rem;
            color: #283593;
            margin: 2.5rem 0 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px dashed #bdc3c7;
        }
        .article-content h3 {
            font-size: 1.5rem;
            color: #3949ab;
            margin: 2rem 0 1rem;
        }
        .article-content p {
            margin-bottom: 1.5rem;
            text-align: justify;
            font-size: 1.1rem;
        }
        .highlight-box {
            background: #e8f5e9;
            border-left: 5px solid #4caf50;
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 8px 8px 0;
        }
        .highlight-box strong { color: #1b5e20; }
        .stat-card {
            background: linear-gradient(145deg, #e3f2fd, #bbdefb);
            border-radius: 10px;
            padding: 1.5rem;
            margin: 2rem 0;
            text-align: center;
            border: 1px solid #90caf9;
            box-shadow: 0 4px 6px rgba(144, 202, 249, 0.3);
        }
        .stat-number {
            font-size: 3rem;
            font-weight: 800;
            color: #1565c0;
            line-height: 1;
        }
        .stat-label { color: #0d47a1; font-weight: 600; }
        .feature-img {
            width: 100%;
            border-radius: 12px;
            margin: 2.5rem auto;
            box-shadow: 0 10px 20px rgba(0,0,0,0.1);
            border: 1px solid #e0e0e0;
        }
        .quote {
            font-style: italic;
            padding: 2rem;
            background: #fffde7;
            border-radius: 12px;
            margin: 2.5rem 0;
            position: relative;
            border-left: 5px solid #ffd600;
        }
        .quote::before {
            content: "\201C";
            font-size: 5rem;
            color: #ffd600;
            position: absolute;
            top: -20px;
            left: 15px;
            font-family: serif;
        }
        .quote-author {
            text-align: right;
            font-weight: bold;
            color: #5d4037;
            margin-top: 1rem;
        }
        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            margin: 2rem 0;
            box-shadow: 0 3px 10px rgba(0,0,0,0.08);
            border-radius: 10px;
            overflow: hidden;
        }
        .comparison-table th {
            background: #5c6bc0;
            color: white;
            padding: 1rem;
            text-align: left;
        }
        .comparison-table td {
            padding: 1rem;
            border-bottom: 1px solid #e0e0e0;
        }
        .comparison-table tr:nth-child(even) { background-color: #f5f5f5; }
        .comparison-table tr:hover { background-color: #e8eaf6; }
        .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);
        }
        .sidebar-widget h3 {
            color: #1a237e;
            margin-bottom: 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #ffeb3b;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .rating-widget form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .stars {
            display: flex;
            justify-content: center;
            gap: 5px;
            font-size: 1.8rem;
            color: #ffd600;
            margin: 1rem 0;
        }
        .stars label { cursor: pointer; transition: transform 0.2s; }
        .stars label:hover { transform: scale(1.2); }
        .rating-input { display: none; }
        .rating-btn {
            background: #ff9800;
            color: white;
            border: none;
            padding: 12px;
            border-radius: 8px;
            font-weight: bold;
            cursor: pointer;
            transition: background 0.3s;
        }
        .rating-btn:hover { background: #f57c00; }
        .comment-widget textarea {
            width: 100%;
            height: 120px;
            padding: 15px;
            border: 2px solid #e0e0e0;
            border-radius: 8px;
            font-family: inherit;
            font-size: 1rem;
            resize: vertical;
            margin-bottom: 1rem;
        }
        .comment-widget button {
            background: #2196f3;
            color: white;
            border: none;
            padding: 12px 25px;
            border-radius: 8px;
            font-weight: bold;
            cursor: pointer;
            width: 100%;
            transition: background 0.3s;
        }
        .comment-widget button:hover { background: #0b7dda; }
        .toc-widget ul {
            list-style: none;
            padding-left: 0;
        }
        .toc-widget li { margin-bottom: 0.8rem; }
        .toc-widget a {
            display: block;
            padding: 0.8rem 1rem;
            background: #f5f5f5;
            border-radius: 6px;
            border-left: 4px solid #5c6bc0;
        }
        .toc-widget a:hover {
            background: #e8eaf6;
            border-left-color: #1a237e;
        }
        .web-links-section {
            background: #f1f8e9;
            padding: 2.5rem 0;
            margin-top: 3rem;
            border-top: 2px solid #c5e1a5;
            border-bottom: 2px solid #c5e1a5;
        }
        .web-links-container {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 1.2rem;
        }
        .web-link {
            background: white;
            padding: 1.2rem;
            border-radius: 8px;
            text-align: center;
            box-shadow: 0 3px 6px rgba(0,0,0,0.05);
            transition: all 0.3s;
            border: 1px solid #dcedc8;
        }
        .web-link:hover {
            transform: translateY(-5px);
            box-shadow: 0 8px 15px rgba(0,0,0,0.1);
            border-color: #9ccc65;
        }
        .web-link a {
            color: #33691e;
            font-weight: 600;
            font-size: 1.05rem;
        }
        .site-footer {
            background: #1a237e;
            color: #e8eaf6;
            padding: 3rem 0 1.5rem;
        }
        .footer-container {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 2.5rem;
            margin-bottom: 2rem;
        }
        .footer-logo a {
            color: #ffeb3b;
            font-size: 2rem;
            font-weight: bold;
        }
        .footer-nav h4 {
            color: #ffeb3b;
            margin-bottom: 1.2rem;
            font-size: 1.2rem;
        }
        .footer-nav ul {
            list-style: none;
            padding-left: 0;
        }
        .footer-nav li { margin-bottom: 0.8rem; }
        .footer-nav a {
            color: #c5cae9;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .footer-nav a:hover { color: #ffeb3b; }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid #3949ab;
            color: #9fa8da;
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            .main-content { grid-template-columns: 1fr; }
            .sidebar { order: -1; }
        }
        @media (max-width: 768px) {
            .hamburger { display: block; }
            .main-nav ul {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background: #283593;
                padding: 1rem;
                box-shadow: 0 10px 15px rgba(0,0,0,0.2);
                border-top: 2px solid #ffeb3b;
            }
            .main-nav.active ul { display: flex; }
            .header-container { flex-wrap: wrap; }
            .article-content h1 { font-size: 2.2rem; }
            .article-content h2 { font-size: 1.8rem; }
            .footer-container { flex-direction: column; }
            .search-form { flex-direction: column; }
            .search-btn { justify-content: center; }
        }
        @media (max-width: 480px) {
            .article-content { padding: 1.5rem; }
            .article-content h1 { font-size: 1.9rem; }
            .stat-number { font-size: 2.5rem; }
        }
        @keyframes fadeInUp {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .article-content, .sidebar-widget {
            animation: fadeInUp 0.6s ease-out;
        }
        .web-link { animation: fadeInUp 0.5s ease-out; }
        .pulse { animation: pulse 2s infinite; }
        @keyframes pulse {
            0% { box-shadow: 0 0 0 0 rgba(76, 175, 80, 0.7); }
            70% { box-shadow: 0 0 0 10px rgba(76, 175, 80, 0); }
            100% { box-shadow: 0 0 0 0 rgba(76, 175, 80, 0); }
        }
        .highlight { background: linear-gradient(120deg, #ffeb3b 0%, #ffeb3b 100%); background-repeat: no-repeat; background-size: 100% 0.4em; background-position: 0 88%; }