:root {
            --primary-color: #1a365d;
            --secondary-color: #c53030;
            --accent-color: #d69e2e;
            --text-color: #2d3748;
            --light-bg: #f7fafc;
            --dark-bg: #2d3748;
            --border-color: #e2e8f0;
            --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
            --transition: all 0.3s ease;
            --max-width: 1200px;
        }
        * {
            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: var(--text-color);
            background-color: #fff;
            overflow-x: hidden;
        }
        h1, h2, h3, h4 {
            color: var(--primary-color);
            margin-bottom: 1rem;
            line-height: 1.3;
            font-weight: 700;
        }
        h1 {
            font-size: 2.8rem;
            margin-top: 1.5rem;
            border-bottom: 3px solid var(--accent-color);
            padding-bottom: 0.5rem;
        }
        h2 {
            font-size: 2.2rem;
            margin-top: 2.5rem;
            color: var(--secondary-color);
        }
        h3 {
            font-size: 1.8rem;
            margin-top: 2rem;
        }
        h4 {
            font-size: 1.4rem;
            margin-top: 1.5rem;
        }
        p {
            margin-bottom: 1.5rem;
            text-align: justify;
            hyphens: auto;
        }
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 1.5rem;
        }
        header {
            background-color: var(--primary-color);
            color: white;
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1rem 0;
        }
        .my-logo {
            font-size: 1.8rem;
            font-weight: 800;
            color: white;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .my-logo i {
            color: var(--accent-color);
        }
        .my-logo:hover {
            color: var(--accent-color);
        }
        .desktop-nav {
            display: flex;
            gap: 2rem;
        }
        @media (max-width: 992px) {
            .desktop-nav {
                display: none;
            }
        }
        .desktop-nav a {
            color: white;
            text-decoration: none;
            font-weight: 600;
            padding: 0.5rem 1rem;
            border-radius: 4px;
            transition: var(--transition);
        }
        .desktop-nav a:hover {
            background-color: var(--accent-color);
            color: var(--primary-color);
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 0.5rem;
        }
        @media (max-width: 992px) {
            .hamburger {
                display: block;
            }
        }
        .mobile-nav {
            display: none;
            flex-direction: column;
            background-color: var(--dark-bg);
            padding: 1rem;
            position: absolute;
            top: 100%;
            left: 0;
            width: 100%;
            box-shadow: var(--shadow);
            z-index: 999;
        }
        .mobile-nav.active {
            display: flex;
        }
        .mobile-nav a {
            color: white;
            text-decoration: none;
            padding: 1rem;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            transition: var(--transition);
        }
        .mobile-nav a:hover {
            background-color: var(--accent-color);
            color: var(--primary-color);
            padding-left: 1.5rem;
        }
        .breadcrumb {
            background-color: var(--light-bg);
            padding: 1rem 0;
            margin-bottom: 2rem;
            border-bottom: 1px solid var(--border-color);
        }
        .breadcrumb ol {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
            gap: 0.5rem;
        }
        .breadcrumb li {
            display: flex;
            align-items: center;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '/';
            margin-left: 0.5rem;
            color: #718096;
        }
        .breadcrumb a {
            color: var(--primary-color);
            text-decoration: none;
            transition: var(--transition);
        }
        .breadcrumb a:hover {
            color: var(--secondary-color);
            text-decoration: underline;
        }
        main {
            padding: 2rem 0;
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
        }
        @media (max-width: 768px) {
            main {
                grid-template-columns: 1fr;
            }
        }
        .content-area {
            background-color: white;
            padding: 2rem;
            border-radius: 8px;
            box-shadow: var(--shadow);
        }
        .sidebar {
            background-color: var(--light-bg);
            padding: 1.5rem;
            border-radius: 8px;
            height: fit-content;
            position: sticky;
            top: 120px;
        }
        @media (max-width: 768px) {
            .sidebar {
                position: static;
            }
        }
        .widget {
            margin-bottom: 2rem;
            padding-bottom: 1.5rem;
            border-bottom: 1px solid var(--border-color);
        }
        .widget:last-child {
            border-bottom: none;
        }
        .widget h3 {
            font-size: 1.3rem;
            margin-top: 0;
            color: var(--secondary-color);
        }
        .search-form {
            display: flex;
            margin-top: 1rem;
        }
        .search-form input {
            flex: 1;
            padding: 0.8rem;
            border: 1px solid var(--border-color);
            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: var(--secondary-color);
        }
        .rating-form, .comment-form {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }
        .rating-stars {
            display: flex;
            gap: 0.5rem;
            font-size: 1.5rem;
            color: #e2e8f0;
            cursor: pointer;
        }
        .rating-stars .star:hover,
        .rating-stars .star.active {
            color: var(--accent-color);
        }
        .form-group {
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }
        .form-group label {
            font-weight: 600;
            color: var(--primary-color);
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            padding: 0.8rem;
            border: 1px solid var(--border-color);
            border-radius: 4px;
            font-size: 1rem;
            font-family: inherit;
        }
        .form-group textarea {
            min-height: 120px;
            resize: vertical;
        }
        .submit-btn {
            background-color: var(--primary-color);
            color: white;
            border: none;
            padding: 1rem;
            border-radius: 4px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
        }
        .submit-btn:hover {
            background-color: var(--secondary-color);
            transform: translateY(-2px);
        }
        .article-intro {
            background: linear-gradient(to right, var(--light-bg), white);
            padding: 2rem;
            border-left: 4px solid var(--accent-color);
            margin-bottom: 2.5rem;
            border-radius: 0 8px 8px 0;
        }
        .article-intro p {
            font-size: 1.2rem;
            font-weight: 500;
            color: var(--primary-color);
            margin-bottom: 0;
        }
        .featured-image {
            width: 100%;
            height: auto;
            border-radius: 8px;
            margin: 2rem 0;
            box-shadow: var(--shadow);
            border: 1px solid var(--border-color);
        }
        .content-highlight {
            background-color: #fff8e1;
            padding: 1.5rem;
            border-radius: 8px;
            margin: 2rem 0;
            border-left: 4px solid var(--accent-color);
        }
        .content-highlight p {
            margin-bottom: 0;
            font-weight: 600;
        }
        .info-box {
            background-color: var(--light-bg);
            padding: 1.5rem;
            border-radius: 8px;
            margin: 2rem 0;
            border: 1px solid var(--border-color);
        }
        .info-box h4 {
            margin-top: 0;
            color: var(--secondary-color);
        }
        .content-area a {
            color: var(--secondary-color);
            text-decoration: none;
            font-weight: 600;
            border-bottom: 1px dotted var(--secondary-color);
            transition: var(--transition);
        }
        .content-area a:hover {
            color: var(--primary-color);
            border-bottom-style: solid;
        }
        ul, ol {
            margin-left: 2rem;
            margin-bottom: 1.5rem;
        }
        li {
            margin-bottom: 0.5rem;
        }
        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            margin: 2rem 0;
            box-shadow: var(--shadow);
            border-radius: 8px;
            overflow: hidden;
        }
        .comparison-table th,
        .comparison-table td {
            padding: 1rem;
            text-align: left;
            border-bottom: 1px solid var(--border-color);
        }
        .comparison-table th {
            background-color: var(--primary-color);
            color: white;
            font-weight: 600;
        }
        .comparison-table tr:nth-child(even) {
            background-color: var(--light-bg);
        }
        .comparison-table tr:hover {
            background-color: #edf2f7;
        }
        .update-time {
            display: inline-block;
            background-color: var(--accent-color);
            color: white;
            padding: 0.5rem 1rem;
            border-radius: 4px;
            font-size: 0.9rem;
            font-weight: 600;
            margin-top: 2rem;
        }
        footer {
            background-color: var(--dark-bg);
            color: white;
            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-section h3 {
            color: white;
            margin-top: 0;
            font-size: 1.3rem;
            margin-bottom: 1.5rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid var(--accent-color);
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 0.8rem;
        }
        .footer-links a {
            color: #cbd5e0;
            text-decoration: none;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: var(--accent-color);
            padding-left: 0.5rem;
        }
        friend-link {
            display: block;
            background-color: rgba(255, 255, 255, 0.1);
            padding: 1.5rem;
            border-radius: 8px;
            margin: 1.5rem 0;
        }
        friend-link h4 {
            color: var(--accent-color);
            margin-top: 0;
        }
        friend-link ul {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            list-style: none;
            margin: 0;
        }
        friend-link li {
            margin: 0;
        }
        friend-link a {
            color: white;
            text-decoration: none;
            padding: 0.5rem 1rem;
            background-color: rgba(255, 255, 255, 0.1);
            border-radius: 4px;
            transition: var(--transition);
        }
        friend-link a:hover {
            background-color: var(--accent-color);
            color: var(--primary-color);
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: #a0aec0;
            font-size: 0.9rem;
        }
        @media (max-width: 768px) {
            h1 { font-size: 2.2rem; }
            h2 { font-size: 1.8rem; }
            h3 { font-size: 1.5rem; }
            h4 { font-size: 1.2rem; }
            .content-area {
                padding: 1.5rem;
            }
            .article-intro {
                padding: 1.5rem;
            }
            .comparison-table {
                display: block;
                overflow-x: auto;
            }
            friend-link ul {
                flex-direction: column;
            }
        }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .content-area > * {
            animation: fadeIn 0.5s ease forwards;
        }
        .pulse {
            animation: pulse 2s infinite;
        }
        @keyframes pulse {
            0% { box-shadow: 0 0 0 0 rgba(214, 158, 46, 0.7); }
            70% { box-shadow: 0 0 0 10px rgba(214, 158, 46, 0); }
            100% { box-shadow: 0 0 0 0 rgba(214, 158, 46, 0); }
        }