* { margin: 0; padding: 0; box-sizing: border-box; }
        :root {
            --primary: #2a2d43;
            --secondary: #4a5079;
            --accent: #ff7bac;
            --accent-dark: #e65c9a;
            --light: #f5f7fa;
            --dark: #1a1c2e;
            --text: #333;
            --text-light: #666;
            --border: #ddd;
            --success: #4CAF50;
            --warning: #ff9800;
            --shadow: 0 4px 12px rgba(0,0,0,0.08);
            --radius: 8px;
            --transition: all 0.3s ease;
            font-size: 16px;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: var(--text);
            background-color: var(--light);
            overflow-x: hidden;
        }
        a { color: var(--accent); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--accent-dark); }
        img { max-width: 100%; height: auto; display: block; }
        ul, ol { padding-left: 1.5rem; }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: linear-gradient(135deg, var(--dark) 0%, var(--primary) 100%);
            color: white;
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            color: white;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo i { color: var(--accent); }
        .my-logo:hover { color: var(--accent); }
        .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: 3px;
            background: var(--accent);
            transition: width 0.3s;
        }
        .main-nav a:hover::after { width: 100%; }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
        }
        .breadcrumb {
            background: #f0f2f5;
            padding: 0.8rem 0;
            font-size: 0.9rem;
            margin-bottom: 2rem;
        }
        .breadcrumb a { color: var(--text-light); }
        .breadcrumb a:hover { color: var(--accent); }
        .breadcrumb i { margin: 0 0.5rem; }
        .content-wrapper {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
            margin: 2rem 0;
        }
        .main-content { background: white; padding: 2.5rem; border-radius: var(--radius); box-shadow: var(--shadow); }
        .sidebar { background: white; padding: 1.5rem; border-radius: var(--radius); box-shadow: var(--shadow); align-self: start; }
        h1 { font-size: 2.8rem; color: var(--dark); margin-bottom: 1.5rem; line-height: 1.2; }
        h2 { font-size: 2rem; color: var(--primary); margin: 2.5rem 0 1rem; padding-bottom: 0.5rem; border-bottom: 3px solid var(--accent); }
        h3 { font-size: 1.5rem; color: var(--secondary); margin: 2rem 0 1rem; }
        h4 { font-size: 1.2rem; color: var(--secondary); margin: 1.5rem 0 0.8rem; }
        p { margin-bottom: 1.2rem; text-align: justify; }
        .lead { font-size: 1.2rem; color: var(--text-light); font-weight: 500; margin-bottom: 2rem; }
        .highlight { background: linear-gradient(90deg, rgba(255,123,172,0.1) 0%, rgba(255,123,172,0) 100%); padding: 1.5rem; border-left: 4px solid var(--accent); margin: 1.5rem 0; }
        .tip { background-color: #e8f4fd; border-left: 4px solid #2196F3; padding: 1rem; margin: 1.5rem 0; }
        .tip i { color: #2196F3; margin-right: 0.5rem; }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 1rem;
            margin: 2rem 0;
        }
        .stat-card {
            background: var(--light);
            border-radius: var(--radius);
            padding: 1.5rem;
            text-align: center;
            border-top: 5px solid var(--accent);
            transition: var(--transition);
        }
        .stat-card:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
        .stat-card .num { font-size: 2.5rem; font-weight: 800; color: var(--accent); }
        .stat-card .label { font-size: 0.9rem; color: var(--text-light); }
        .search-box { margin-bottom: 2rem; }
        .search-form { display: flex; }
        .search-form input {
            flex: 1;
            padding: 0.9rem 1rem;
            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(--accent); }
        .search-form button {
            background: var(--accent);
            color: white;
            border: none;
            padding: 0 1.5rem;
            border-radius: 0 var(--radius) var(--radius) 0;
            cursor: pointer;
            font-size: 1.1rem;
            transition: var(--transition);
        }
        .search-form button:hover { background: var(--accent-dark); }
        .comment-section, .rating-section {
            background: var(--light);
            padding: 2rem;
            border-radius: var(--radius);
            margin-top: 3rem;
        }
        .comment-section h3, .rating-section h3 { border-bottom: none; }
        .rating-stars { display: flex; gap: 0.5rem; margin: 1rem 0; font-size: 1.8rem; color: #ffd700; }
        .rating-stars i { cursor: pointer; transition: var(--transition); }
        .rating-stars i:hover { transform: scale(1.2); }
        form { margin-top: 1.5rem; }
        .form-group { margin-bottom: 1.2rem; }
        form label { display: block; margin-bottom: 0.5rem; font-weight: 600; }
        form input, form textarea, form select {
            width: 100%;
            padding: 0.8rem;
            border: 2px solid var(--border);
            border-radius: var(--radius);
            font-family: inherit;
            font-size: 1rem;
            transition: var(--transition);
        }
        form input:focus, form textarea:focus, form select:focus {
            border-color: var(--accent);
            outline: none;
        }
        form textarea { min-height: 150px; resize: vertical; }
        form button {
            background: var(--accent);
            color: white;
            border: none;
            padding: 0.9rem 2rem;
            border-radius: var(--radius);
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
        }
        form button:hover { background: var(--accent-dark); }
        .article-image {
            width: 100%;
            border-radius: var(--radius);
            overflow: hidden;
            margin: 2rem 0;
            box-shadow: var(--shadow);
        }
        .article-image img {
            width: 100%;
            transition: transform 0.5s ease;
        }
        .article-image:hover img { transform: scale(1.03); }
        .image-caption {
            text-align: center;
            font-style: italic;
            color: var(--text-light);
            margin-top: 0.5rem;
            font-size: 0.9rem;
        }
        .sidebar-widget { margin-bottom: 2.5rem; }
        .sidebar-widget h4 { color: var(--dark); margin-bottom: 1rem; font-size: 1.3rem; }
        .link-list { list-style: none; padding: 0; }
        .link-list li { margin-bottom: 0.8rem; }
        .link-list a {
            display: block;
            padding: 0.8rem;
            background: var(--light);
            border-radius: var(--radius);
            color: var(--text);
            border-left: 4px solid transparent;
        }
        .link-list a:hover {
            background: #eef1f7;
            border-left-color: var(--accent);
            color: var(--accent);
        }
        .site-footer {
            background: var(--dark);
            color: white;
            padding: 3rem 0 1.5rem;
            margin-top: 3rem;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
        }
        .footer-widget h4 { color: white; margin-bottom: 1.5rem; }
        .footer-links { list-style: none; }
        .footer-links li { margin-bottom: 0.8rem; }
        .footer-links a { color: #ccc; }
        .footer-links a:hover { color: var(--accent); }
        friend-link {
            display: inline-block;
            background: rgba(255,255,255,0.1);
            padding: 0.5rem 1rem;
            border-radius: var(--radius);
            margin: 0.3rem;
            color: #ccc;
        }
        friend-link a { color: #ccc; }
        friend-link a:hover { color: white; }
        .copyright {
            text-align: center;
            margin-top: 3rem;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(255,255,255,0.1);
            color: #aaa;
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            .content-wrapper { grid-template-columns: 1fr; }
            h1 { font-size: 2.4rem; }
        }
        @media (max-width: 768px) {
            .main-nav ul { display: none; flex-direction: column; position: absolute; top: 100%; left: 0; width: 100%; background: var(--primary); padding: 1rem; box-shadow: var(--shadow); }
            .main-nav.active ul { display: flex; }
            .hamburger { display: block; }
            .header-container { position: relative; }
            .main-content { padding: 1.5rem; }
            .stats-grid { grid-template-columns: 1fr; }
        }
        @media (max-width: 480px) {
            :root { font-size: 15px; }
            h1 { font-size: 2rem; }
            .search-form { flex-direction: column; }
            .search-form input, .search-form button { border-radius: var(--radius); width: 100%; }
            .search-form button { margin-top: 0.5rem; padding: 0.9rem; }
        }