:root {
            --primary-color: #c62828;
            --secondary-color: #212121;
            --accent-color: #ffd700;
            --light-bg: #f5f5f5;
            --text-color: #333;
            --text-light: #777;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            --transition: all 0.3s ease;
            --max-width: 1200px;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.7;
            color: var(--text-color);
            background-color: #fff;
            overflow-x: hidden;
        }
        a {
            color: var(--primary-color);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: #8e0000;
        }
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background-color: var(--secondary-color);
            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;
            text-transform: uppercase;
            letter-spacing: 2px;
            color: white;
            display: flex;
            align-items: center;
        }
        .my-logo i {
            color: var(--accent-color);
            margin-right: 10px;
        }
        .my-logo span {
            color: var(--primary-color);
        }
        .my-logo:hover {
            color: var(--accent-color);
        }
        .desktop-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .desktop-nav a {
            color: white;
            font-weight: 500;
            padding: 0.5rem 0;
            position: relative;
        }
        .desktop-nav a:hover {
            color: var(--accent-color);
        }
        .desktop-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background-color: var(--accent-color);
            transition: var(--transition);
        }
        .desktop-nav a:hover::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            flex-direction: column;
            cursor: pointer;
            gap: 4px;
        }
        .hamburger span {
            width: 25px;
            height: 3px;
            background-color: white;
            border-radius: 2px;
            transition: var(--transition);
        }
        .mobile-nav {
            position: fixed;
            top: 70px;
            left: 0;
            width: 100%;
            background-color: var(--secondary-color);
            padding: 1rem;
            transform: translateY(-150%);
            transition: transform 0.5s ease;
            z-index: 999;
            box-shadow: var(--shadow);
        }
        .mobile-nav.active {
            transform: translateY(0);
        }
        .mobile-nav ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .mobile-nav a {
            color: white;
            font-size: 1.1rem;
            display: block;
            padding: 0.5rem;
            border-left: 3px solid transparent;
        }
        .mobile-nav a:hover {
            color: var(--accent-color);
            border-left-color: var(--accent-color);
            padding-left: 1rem;
        }
        .breadcrumb {
            background-color: var(--light-bg);
            padding: 1rem 0;
            font-size: 0.9rem;
            margin-bottom: 2rem;
        }
        .breadcrumb ul {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '/';
            margin: 0 10px;
            color: var(--text-light);
        }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
            margin: 2rem 0;
        }
        @media (max-width: 992px) {
            .main-content {
                grid-template-columns: 1fr;
            }
        }
        article {
            background: white;
            padding: 2.5rem;
            border-radius: 8px;
            box-shadow: var(--shadow);
        }
        .article-header {
            border-bottom: 2px solid var(--light-bg);
            padding-bottom: 1.5rem;
            margin-bottom: 2rem;
        }
        h1 {
            font-size: 2.8rem;
            line-height: 1.2;
            color: var(--secondary-color);
            margin-bottom: 1rem;
        }
        .article-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 1rem;
            color: var(--text-light);
            font-size: 0.95rem;
        }
        .update-time {
            background-color: #e8f5e9;
            padding: 0.3rem 0.8rem;
            border-radius: 20px;
            color: #2e7d32;
        }
        h2 {
            font-size: 2rem;
            margin: 2.5rem 0 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 1px solid #eee;
            color: var(--primary-color);
        }
        h3 {
            font-size: 1.6rem;
            margin: 2rem 0 1rem;
            color: var(--secondary-color);
        }
        h4 {
            font-size: 1.3rem;
            margin: 1.5rem 0 0.8rem;
            color: #555;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }
        .lead {
            font-size: 1.3rem;
            font-weight: 500;
            color: var(--secondary-color);
            background-color: #fffde7;
            padding: 1.5rem;
            border-left: 4px solid var(--accent-color);
            border-radius: 0 8px 8px 0;
            margin-bottom: 2.5rem;
        }
        .highlight {
            background-color: #ffebee;
            padding: 2rem;
            border-radius: 8px;
            margin: 2rem 0;
            border-left: 5px solid var(--primary-color);
        }
        .highlight strong {
            color: var(--primary-color);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 8px;
            box-shadow: var(--shadow);
            margin: 2rem auto;
        }
        .img-caption {
            text-align: center;
            font-style: italic;
            color: var(--text-light);
            margin-top: -1rem;
            margin-bottom: 2rem;
            font-size: 0.9rem;
        }
        blockquote {
            font-size: 1.3rem;
            font-style: italic;
            color: #555;
            border-left: 5px solid var(--accent-color);
            padding-left: 2rem;
            margin: 2.5rem 0;
            background-color: #f9f9f9;
            padding: 2rem;
            border-radius: 0 8px 8px 0;
        }
        .stats-box {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 1.5rem;
            background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
            padding: 2rem;
            border-radius: 10px;
            margin: 2.5rem 0;
        }
        .stat-item {
            text-align: center;
            padding: 1rem;
        }
        .stat-value {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--primary-color);
            line-height: 1;
        }
        .stat-label {
            font-size: 1rem;
            color: var(--secondary-color);
            margin-top: 0.5rem;
        }
        aside {
            background: white;
            padding: 1.5rem;
            border-radius: 8px;
            box-shadow: var(--shadow);
            align-self: start;
            position: sticky;
            top: 100px;
        }
        .sidebar-widget {
            margin-bottom: 2.5rem;
        }
        .sidebar-widget h3 {
            font-size: 1.3rem;
            margin-bottom: 1.2rem;
            padding-bottom: 0.7rem;
            border-bottom: 2px solid var(--light-bg);
            color: var(--primary-color);
        }
        .search-form {
            display: flex;
        }
        .search-form input {
            flex: 1;
            padding: 0.8rem 1rem;
            border: 1px solid #ddd;
            border-radius: 4px 0 0 4px;
            font-size: 1rem;
        }
        .search-form button {
            background-color: var(--primary-color);
            color: white;
            border: none;
            padding: 0 1.2rem;
            border-radius: 0 4px 4px 0;
            cursor: pointer;
            transition: var(--transition);
        }
        .search-form button:hover {
            background-color: #8e0000;
        }
        .related-links ul {
            list-style: none;
        }
        .related-links li {
            margin-bottom: 0.8rem;
            padding-left: 1.2rem;
            position: relative;
        }
        .related-links li::before {
            content: '▸';
            position: absolute;
            left: 0;
            color: var(--primary-color);
        }
        .related-links a:hover {
            color: var(--primary-color);
            text-decoration: underline;
        }
        .rating-widget, .comment-widget {
            background-color: var(--light-bg);
            padding: 1.5rem;
            border-radius: 8px;
            margin-top: 2.5rem;
        }
        .rating-form, .comment-form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .rating-stars {
            display: flex;
            gap: 0.5rem;
            direction: rtl;
            justify-content: center;
        }
        .rating-stars input {
            display: none;
        }
        .rating-stars label {
            font-size: 2rem;
            color: #ddd;
            cursor: pointer;
            transition: var(--transition);
        }
        .rating-stars label:hover,
        .rating-stars label:hover ~ label,
        .rating-stars input:checked ~ label {
            color: var(--accent-color);
        }
        .form-group {
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }
        .form-group label {
            font-weight: 600;
            color: var(--secondary-color);
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            padding: 0.8rem;
            border: 1px solid #ccc;
            border-radius: 4px;
            font-family: inherit;
            font-size: 1rem;
        }
        .form-group textarea {
            min-height: 120px;
            resize: vertical;
        }
        .btn-submit {
            background-color: var(--primary-color);
            color: white;
            border: none;
            padding: 1rem 1.5rem;
            border-radius: 4px;
            font-size: 1.1rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            align-self: flex-start;
        }
        .btn-submit:hover {
            background-color: #8e0000;
            transform: translateY(-2px);
            box-shadow: 0 6px 12px rgba(198, 40, 40, 0.2);
        }
        footer {
            background-color: var(--secondary-color);
            color: #ccc;
            padding: 3rem 0 1.5rem;
            margin-top: 4rem;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 3rem;
        }
        .footer-widget h4 {
            color: white;
            font-size: 1.2rem;
            margin-bottom: 1.5rem;
            padding-bottom: 0.7rem;
            border-bottom: 1px solid #444;
        }
        .footer-links ul {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 0.7rem;
        }
        .footer-links a {
            color: #aaa;
        }
        .footer-links a:hover {
            color: var(--accent-color);
            padding-left: 5px;
        }
        friend-link {
            display: block;
            background-color: #333;
            padding: 1rem;
            border-radius: 4px;
            margin: 1rem 0;
            text-align: center;
            font-weight: bold;
        }
        friend-link a {
            color: var(--accent-color);
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            margin-top: 2rem;
            border-top: 1px solid #444;
            font-size: 0.9rem;
            color: #888;
        }
        @media (max-width: 768px) {
            .desktop-nav {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            h3 {
                font-size: 1.5rem;
            }
            article {
                padding: 1.5rem;
            }
            .main-content {
                gap: 2rem;
            }
        }
        .text-center {
            text-align: center;
        }
        .mb-3 {
            margin-bottom: 3rem;
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 5px;
        }
        .keyword {
            background-color: #ffebee;
            padding: 0.2rem 0.4rem;
            border-radius: 3px;
            font-weight: 600;
            color: var(--primary-color);
        }