:root {
            --primary-color: #2c3e50;
            --secondary-color: #e74c3c;
            --accent-color: #3498db;
            --light-color: #ecf0f1;
            --dark-color: #2c3e50;
            --text-color: #333;
            --text-light: #7f8c8d;
            --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
            --transition: all 0.3s ease;
            --border-radius: 8px;
            --container-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: #f9f9f9;
        }
        a {
            color: var(--accent-color);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--secondary-color);
        }
        .container {
            width: 100%;
            max-width: var(--container-width);
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background-color: var(--primary-color);
            color: white;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 0;
        }
        .my-logo {
            font-size: 2rem;
            font-weight: 700;
            color: white;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo i {
            color: var(--secondary-color);
        }
        .my-logo:hover {
            color: var(--light-color);
        }
        nav {
            display: flex;
            align-items: center;
        }
        .nav-links {
            display: flex;
            list-style: none;
            gap: 30px;
        }
        .nav-links a {
            color: white;
            font-weight: 500;
            padding: 5px 0;
            position: relative;
        }
        .nav-links a:hover {
            color: var(--secondary-color);
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            width: 0;
            height: 2px;
            background: var(--secondary-color);
            bottom: 0;
            left: 0;
            transition: var(--transition);
        }
        .nav-links 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);
        }
        .breadcrumb {
            background-color: var(--light-color);
            padding: 12px 0;
            font-size: 0.9rem;
            border-bottom: 1px solid #ddd;
        }
        .breadcrumb a {
            color: var(--text-light);
        }
        .breadcrumb a:hover {
            color: var(--accent-color);
        }
        .breadcrumb span {
            color: var(--text-light);
            margin: 0 8px;
        }
        main {
            padding: 40px 0;
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
        }
        article {
            background: white;
            padding: 40px;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
        }
        h1 {
            color: var(--primary-color);
            font-size: 2.8rem;
            margin-bottom: 20px;
            line-height: 1.2;
            border-bottom: 3px solid var(--secondary-color);
            padding-bottom: 15px;
        }
        h2 {
            color: var(--primary-color);
            font-size: 2rem;
            margin: 35px 0 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--light-color);
        }
        h3 {
            color: var(--dark-color);
            font-size: 1.5rem;
            margin: 25px 0 15px;
        }
        h4 {
            color: var(--dark-color);
            font-size: 1.2rem;
            margin: 20px 0 10px;
        }
        p {
            margin-bottom: 20px;
            text-align: justify;
        }
        .lead {
            font-size: 1.2rem;
            font-weight: 500;
            color: var(--primary-color);
            background-color: #f0f8ff;
            padding: 20px;
            border-left: 4px solid var(--accent-color);
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
            margin-bottom: 30px;
        }
        .highlight {
            background-color: #fffde7;
            padding: 25px;
            border-radius: var(--border-radius);
            border-left: 5px solid #ffc107;
            margin: 25px 0;
        }
        .highlight h3 {
            margin-top: 0;
            color: #ff9800;
        }
        img {
            max-width: 100%;
            height: auto;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            margin: 25px 0;
            display: block;
        }
        .float-left {
            float: left;
            margin-right: 25px;
            margin-bottom: 15px;
            max-width: 45%;
        }
        .clearfix::after {
            content: "";
            clear: both;
            display: table;
        }
        ul, ol {
            margin-left: 25px;
            margin-bottom: 20px;
        }
        li {
            margin-bottom: 8px;
        }
        blockquote {
            border-left: 4px solid var(--secondary-color);
            padding-left: 20px;
            margin: 25px 0;
            font-style: italic;
            color: var(--text-light);
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 20px;
            margin: 30px 0;
        }
        .stat-box {
            background: linear-gradient(135deg, var(--accent-color), #2980b9);
            color: white;
            padding: 25px 15px;
            border-radius: var(--border-radius);
            text-align: center;
            box-shadow: var(--shadow);
        }
        .stat-number {
            font-size: 2.5rem;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .stat-label {
            font-size: 1rem;
            opacity: 0.9;
        }
        .link-list {
            background-color: #f8f9fa;
            padding: 20px;
            border-radius: var(--border-radius);
            margin: 30px 0;
        }
        .link-list h3 {
            margin-top: 0;
            color: var(--primary-color);
        }
        .link-list ul {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 10px;
            list-style: none;
            margin-left: 0;
        }
        .link-list li {
            margin-bottom: 0;
        }
        .link-list a {
            display: block;
            padding: 10px 15px;
            background-color: white;
            border-radius: 6px;
            border: 1px solid #e0e0e0;
            transition: var(--transition);
        }
        .link-list a:hover {
            background-color: var(--accent-color);
            color: white;
            transform: translateY(-3px);
            border-color: var(--accent-color);
        }
        .update-time {
            background-color: #e8f5e9;
            padding: 15px;
            border-radius: var(--border-radius);
            margin: 30px 0;
            border-left: 5px solid #4caf50;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .update-time i {
            color: #4caf50;
            font-size: 1.5rem;
        }
        aside {
            position: sticky;
            top: 100px;
            align-self: start;
        }
        .sidebar-widget {
            background: white;
            padding: 25px;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            margin-bottom: 30px;
        }
        .sidebar-widget h3 {
            margin-top: 0;
            color: var(--primary-color);
            padding-bottom: 10px;
            border-bottom: 2px solid var(--light-color);
            margin-bottom: 20px;
        }
        .search-form {
            display: flex;
            margin-bottom: 20px;
        }
        .search-form input {
            flex-grow: 1;
            padding: 12px 15px;
            border: 1px solid #ddd;
            border-radius: var(--border-radius) 0 0 var(--border-radius);
            font-size: 1rem;
        }
        .search-form button {
            background-color: var(--accent-color);
            color: white;
            border: none;
            padding: 0 20px;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
            cursor: pointer;
            transition: var(--transition);
        }
        .search-form button:hover {
            background-color: #2980b9;
        }
        .rating-widget {
            text-align: center;
        }
        .stars {
            display: flex;
            justify-content: center;
            gap: 5px;
            margin: 15px 0;
            font-size: 1.8rem;
            color: #ffc107;
        }
        .stars i {
            cursor: pointer;
            transition: var(--transition);
        }
        .stars i:hover {
            transform: scale(1.2);
        }
        .rating-form button {
            background-color: var(--secondary-color);
            color: white;
            border: none;
            padding: 12px 25px;
            border-radius: var(--border-radius);
            cursor: pointer;
            font-weight: 600;
            width: 100%;
            transition: var(--transition);
            margin-top: 15px;
        }
        .rating-form button:hover {
            background-color: #c0392b;
        }
        .comment-form textarea {
            width: 100%;
            padding: 15px;
            border: 1px solid #ddd;
            border-radius: var(--border-radius);
            font-family: inherit;
            font-size: 1rem;
            resize: vertical;
            min-height: 150px;
            margin-bottom: 15px;
        }
        .comment-form input[type="text"],
        .comment-form input[type="email"] {
            width: 100%;
            padding: 12px 15px;
            border: 1px solid #ddd;
            border-radius: var(--border-radius);
            margin-bottom: 15px;
            font-size: 1rem;
        }
        .comment-form button {
            background-color: var(--primary-color);
            color: white;
            border: none;
            padding: 12px 25px;
            border-radius: var(--border-radius);
            cursor: pointer;
            font-weight: 600;
            width: 100%;
            transition: var(--transition);
        }
        .comment-form button:hover {
            background-color: #1a252f;
        }
        footer {
            background-color: var(--primary-color);
            color: white;
            padding: 50px 0 30px;
            margin-top: 50px;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-section h3 {
            color: white;
            margin-bottom: 20px;
            font-size: 1.3rem;
            border-bottom: 2px solid var(--secondary-color);
            padding-bottom: 10px;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .footer-links a {
            color: #ddd;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: var(--secondary-color);
            padding-left: 5px;
        }
        friend-link {
            display: block;
            background-color: rgba(255, 255, 255, 0.1);
            padding: 15px;
            border-radius: var(--border-radius);
            margin-bottom: 15px;
            transition: var(--transition);
        }
        friend-link:hover {
            background-color: rgba(255, 255, 255, 0.2);
            transform: translateX(5px);
        }
        friend-link a {
            color: white;
            font-weight: 500;
        }
        .copyright {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: #ddd;
            font-size: 0.9rem;
        }
        @media (max-width: 992px) {
            main {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            aside {
                position: static;
            }
            .float-left {
                float: none;
                margin-right: 0;
                max-width: 100%;
            }
        }
        @media (max-width: 768px) {
            .header-container {
                flex-wrap: wrap;
            }
            .hamburger {
                display: flex;
            }
            .nav-links {
                display: none;
                flex-direction: column;
                width: 100%;
                background-color: var(--primary-color);
                position: absolute;
                top: 100%;
                left: 0;
                padding: 20px;
                box-shadow: var(--shadow);
            }
            .nav-links.active {
                display: flex;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.7rem;
            }
            article {
                padding: 25px;
            }
            .stats-grid {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 15px;
            }
            h1 {
                font-size: 1.8rem;
            }
            .lead {
                font-size: 1.1rem;
                padding: 15px;
            }
            .footer-content {
                grid-template-columns: 1fr;
            }
        }
        .text-center {
            text-align: center;
        }
        .mb-30 {
            margin-bottom: 30px;
        }
        .mt-30 {
            margin-top: 30px;
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 5px;
        }
        .keyword {
            background-color: #e3f2fd;
            padding: 2px 6px;
            border-radius: 4px;
            font-weight: 600;
            color: var(--primary-color);
        }