* { 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-color: #f8f9fa;
            max-width: 100vw;
            overflow-x: hidden;
        }
        img { max-width: 100%; height: auto; display: block; }
        h1, h2, h3, h4 { font-family: 'Georgia', serif; color: #1a5276; margin-bottom: 1rem; line-height: 1.3; }
        h1 { font-size: 2.8rem; border-bottom: 4px solid #f1c40f; padding-bottom: 0.5rem; margin-top: 1.5rem; }
        h2 { font-size: 2.2rem; margin-top: 2.5rem; padding-left: 0.5rem; border-left: 5px solid #3498db; }
        h3 { font-size: 1.8rem; margin-top: 2rem; color: #2980b9; }
        h4 { font-size: 1.4rem; margin-top: 1.5rem; color: #16a085; }
        p { margin-bottom: 1.5rem; text-align: justify; hyphens: auto; }
        a { color: #2980b9; text-decoration: none; transition: color 0.3s ease; }
        a:hover { color: #e74c3c; }
        strong { color: #c0392b; font-weight: 700; }
        em { font-style: italic; color: #7d3c98; }
        .lead { font-size: 1.3rem; color: #34495e; font-weight: 500; margin-bottom: 2rem; }
        .update-time { font-size: 0.9rem; color: #7f8c8d; background: #ecf0f1; padding: 0.5rem; border-radius: 4px; margin-bottom: 2rem; display: inline-block; }
        .emoji { font-size: 1.2em; margin-right: 0.3rem; }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
            margin-top: 2rem;
        }
        @media (max-width: 992px) {
            .content-grid { grid-template-columns: 1fr; }
        }
        .site-header {
            background: linear-gradient(135deg, #1a5276 0%, #2c3e50 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-family: 'Arial Black', sans-serif;
            font-size: 2.5rem;
            color: #f1c40f;
            text-decoration: none;
            display: flex;
            align-items: center;
        }
        .my-logo span { color: white; }
        .my-logo:hover { color: #f39c12; }
        .main-nav ul {
            display: flex;
            list-style: none;
        }
        .main-nav li { margin-left: 2rem; }
        .main-nav a {
            color: white;
            font-weight: 600;
            padding: 0.5rem 0;
            position: relative;
        }
        .main-nav a:after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 3px;
            background: #f1c40f;
            transition: width 0.3s ease;
        }
        .main-nav a:hover:after { width: 100%; }
        .burger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
        }
        .breadcrumb {
            padding: 1rem 0;
            background: #ecf0f1;
            font-size: 0.9rem;
        }
        .breadcrumb a { color: #3498db; }
        .breadcrumb a:hover { text-decoration: underline; }
        .sidebar {
            background: white;
            padding: 1.5rem;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            align-self: start;
            position: sticky;
            top: 120px;
        }
        .widget { margin-bottom: 2rem; }
        .widget h3 { font-size: 1.4rem; margin-top: 0; border-bottom: 2px solid #f1c40f; padding-bottom: 0.5rem; }
        .search-form, .comment-form, .rating-form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .form-group { display: flex; flex-direction: column; }
        label { font-weight: 600; margin-bottom: 0.3rem; color: #2c3e50; }
        input, textarea, select {
            padding: 0.8rem;
            border: 2px solid #bdc3c7;
            border-radius: 6px;
            font-size: 1rem;
            transition: border-color 0.3s ease;
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: #3498db;
        }
        button, .btn {
            background: #3498db;
            color: white;
            border: none;
            padding: 0.8rem 1.5rem;
            border-radius: 6px;
            cursor: pointer;
            font-weight: 600;
            transition: background 0.3s ease, transform 0.2s ease;
            display: inline-block;
            text-align: center;
        }
        button:hover, .btn:hover {
            background: #2980b9;
            transform: translateY(-2px);
        }
        .btn-warning { background: #f39c12; }
        .btn-warning:hover { background: #e67e22; }
        .article-content {
            background: white;
            padding: 2.5rem;
            border-radius: 10px;
            box-shadow: 0 5px 20px rgba(0,0,0,0.06);
        }
        .featured-img {
            width: 100%;
            border-radius: 10px;
            margin: 2rem 0;
            border: 5px solid #f1c40f;
        }
        .highlight-box {
            background: linear-gradient(to right, #e3f2fd, #f3e5f5);
            border-left: 6px solid #9b59b6;
            padding: 1.5rem;
            margin: 2rem 0;
            border-radius: 0 8px 8px 0;
        }
        .tip { background: #d5f4e6; padding: 1rem; border-radius: 8px; margin: 1.5rem 0; border-left: 5px solid #16a085; }
        .interlink {
            display: inline-block;
            background: #e8f4fc;
            padding: 0.3rem 0.8rem;
            border-radius: 20px;
            margin: 0.2rem 0.5rem 0.2rem 0;
            font-size: 0.95rem;
        }
        .interlink:hover { background: #d6eaf8; }
        .comments-section, .ratings-section {
            margin-top: 3rem;
            padding-top: 2rem;
            border-top: 2px solid #ecf0f1;
        }
        .comment { background: #f9f9f9; padding: 1.2rem; border-radius: 8px; margin-bottom: 1.5rem; border-left: 4px solid #3498db; }
        .comment-author { font-weight: bold; color: #2c3e50; }
        .comment-date { font-size: 0.85rem; color: #7f8c8d; }
        .star-rating { color: #f1c40f; font-size: 1.2rem; }
        .site-footer {
            background: #2c3e50;
            color: #ecf0f1;
            padding: 3rem 0 1.5rem;
            margin-top: 4rem;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
        }
        .footer-widget h4 { color: #f1c40f; margin-bottom: 1.5rem; }
        .footer-links { list-style: none; }
        .footer-links li { margin-bottom: 0.8rem; }
        .footer-links a { color: #bdc3c7; }
        .footer-links a:hover { color: #f1c40f; }
        friend-link {
            display: block;
            background: #34495e;
            padding: 1rem;
            border-radius: 6px;
            margin-bottom: 1rem;
            text-align: center;
            font-weight: bold;
        }
        friend-link a { color: #f1c40f; }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            margin-top: 2rem;
            border-top: 1px solid #34495e;
            font-size: 0.9rem;
            color: #95a5a6;
        }
        @media (max-width: 768px) {
            h1 { font-size: 2.2rem; }
            h2 { font-size: 1.8rem; }
            h3 { font-size: 1.5rem; }
            .header-container { flex-direction: column; align-items: flex-start; }
            .main-nav { width: 100%; display: none; margin-top: 1rem; }
            .main-nav.active { display: block; }
            .main-nav ul { flex-direction: column; }
            .main-nav li { margin: 0.5rem 0; }
            .burger { display: block; align-self: flex-end; margin-top: -3rem; }
            .article-content { padding: 1.5rem; }
            .sidebar { position: static; }
        }