* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
            line-height: 1.6;
            color: #202122;
            background-color: #f6f6f6;
            overflow-x: hidden;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background-color: #fff;
            border-bottom: 1px solid #a2a9b1;
            box-shadow: 0 2px 5px rgba(0,0,0,0.05);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-content {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 12px 0;
        }
        .my-logo {
            font-size: 28px;
            font-weight: 700;
            color: #0066cc;
            text-decoration: none;
            display: flex;
            align-items: center;
        }
        .my-logo:hover {
            text-decoration: underline;
        }
        .logo-icon {
            display: inline-block;
            width: 36px;
            height: 36px;
            background-color: #0066cc;
            border-radius: 4px;
            margin-right: 10px;
            color: white;
            text-align: center;
            line-height: 36px;
            font-weight: bold;
        }
        nav ul {
            display: flex;
            list-style: none;
        }
        nav li {
            margin-left: 20px;
        }
        nav a {
            text-decoration: none;
            color: #3366cc;
            font-weight: 500;
            padding: 8px 12px;
            border-radius: 4px;
            transition: background-color 0.2s;
        }
        nav a:hover {
            background-color: #f0f0f0;
            text-decoration: underline;
        }
        .hamburger {
            display: none;
            flex-direction: column;
            cursor: pointer;
            width: 30px;
            height: 21px;
            justify-content: space-between;
        }
        .hamburger span {
            height: 3px;
            width: 100%;
            background-color: #333;
            border-radius: 2px;
        }
        main {
            background-color: #fff;
            padding: 30px 0;
            margin-top: 20px;
            border-radius: 8px;
            box-shadow: 0 1px 3px rgba(0,0,0,0.1);
        }
        article {
            padding: 0 40px;
        }
        h1 {
            font-size: 32px;
            margin-bottom: 20px;
            color: #000;
            border-bottom: 1px solid #a2a9b1;
            padding-bottom: 10px;
        }
        h2 {
            font-size: 24px;
            margin: 30px 0 15px;
            color: #000;
            border-bottom: 1px solid #a2a9b1;
            padding-bottom: 5px;
        }
        h3 {
            font-size: 20px;
            margin: 25px 0 12px;
            color: #54595d;
        }
        h4 {
            font-size: 18px;
            margin: 20px 0 10px;
            color: #54595d;
        }
        p {
            margin-bottom: 16px;
            line-height: 1.7;
        }
        strong {
            font-weight: 600;
        }
        a {
            color: #3366cc;
            text-decoration: none;
        }
        a:hover {
            text-decoration: underline;
        }
        .article-image {
            max-width: 100%;
            height: auto;
            border-radius: 4px;
            margin: 20px 0;
            display: block;
        }
        .image-container {
            text-align: center;
            margin: 25px 0;
        }
        .image-caption {
            font-size: 14px;
            color: #54595d;
            margin-top: 5px;
            font-style: italic;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            margin: 20px 0;
            background-color: #f8f9fa;
        }
        th, td {
            border: 1px solid #a2a9b1;
            padding: 10px 12px;
            text-align: left;
        }
        th {
            background-color: #eaecf0;
            font-weight: 600;
        }
        ul, ol {
            margin: 15px 0 15px 40px;
        }
        li {
            margin-bottom: 8px;
        }
        .infobox {
            border: 1px solid #a2a9b1;
            background-color: #f8f9fa;
            padding: 15px;
            margin: 0 0 20px 20px;
            width: 300px;
            float: right;
            clear: right;
        }
        .infobox-title {
            font-size: 18px;
            font-weight: 600;
            text-align: center;
            margin-bottom: 15px;
            color: #000;
        }
        .infobox-row {
            display: flex;
            margin-bottom: 10px;
        }
        .infobox-label {
            font-weight: 600;
            min-width: 120px;
        }
        .search-box {
            margin: 20px 0 30px;
            display: flex;
        }
        .search-input {
            flex-grow: 1;
            padding: 12px 15px;
            border: 1px solid #a2a9b1;
            border-radius: 4px 0 0 4px;
            font-size: 16px;
        }
        .search-button {
            background-color: #3366cc;
            color: white;
            border: none;
            padding: 0 20px;
            border-radius: 0 4px 4px 0;
            cursor: pointer;
            font-weight: 600;
        }
        .search-button:hover {
            background-color: #2a4fa3;
        }
        .rating-section, .comments-section {
            background-color: #f8f9fa;
            padding: 25px;
            border-radius: 8px;
            margin: 30px 0;
            border: 1px solid #a2a9b1;
        }
        .rating-stars {
            display: flex;
            margin: 15px 0;
        }
        .star {
            font-size: 28px;
            color: #ccc;
            cursor: pointer;
            margin-right: 5px;
            transition: color 0.2s;
        }
        .star:hover, .star.active {
            color: #ffc107;
        }
        .comment-form textarea {
            width: 100%;
            height: 120px;
            padding: 12px;
            border: 1px solid #a2a9b1;
            border-radius: 4px;
            margin-bottom: 15px;
            font-family: inherit;
            resize: vertical;
        }
        .comment-form button {
            background-color: #3366cc;
            color: white;
            border: none;
            padding: 10px 20px;
            border-radius: 4px;
            cursor: pointer;
            font-weight: 600;
        }
        .comment-form button:hover {
            background-color: #2a4fa3;
        }
        .social-share {
            display: flex;
            gap: 10px;
            margin: 30px 0;
        }
        .share-button {
            display: flex;
            align-items: center;
            padding: 8px 15px;
            background-color: #f0f0f0;
            border-radius: 4px;
            text-decoration: none;
            color: #333;
            font-weight: 500;
        }
        .share-button:hover {
            background-color: #e0e0e0;
            text-decoration: none;
        }
        .back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            background-color: #3366cc;
            color: white;
            width: 50px;
            height: 50px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            text-decoration: none;
            font-size: 24px;
            box-shadow: 0 3px 10px rgba(0,0,0,0.2);
            z-index: 999;
            opacity: 0;
            transition: opacity 0.3s;
        }
        .back-to-top.visible {
            opacity: 1;
        }
        footer {
            background-color: #eaecf0;
            padding: 40px 0;
            margin-top: 50px;
            border-top: 1px solid #a2a9b1;
        }
        .footer-links {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
            gap: 20px;
            margin-bottom: 30px;
        }
        .footer-links a {
            display: block;
            margin-bottom: 10px;
            color: #3366cc;
        }
        .copyright {
            text-align: center;
            color: #54595d;
            font-size: 14px;
            padding-top: 20px;
            border-top: 1px solid #a2a9b1;
        }
        friend-link {
            display: block;
            margin-bottom: 10px;
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 15px;
            }
            article {
                padding: 0 15px;
            }
            h1 {
                font-size: 28px;
            }
            h2 {
                font-size: 22px;
            }
            h3 {
                font-size: 18px;
            }
            .header-content {
                flex-wrap: wrap;
            }
            .hamburger {
                display: flex;
            }
            nav {
                width: 100%;
                display: none;
                margin-top: 15px;
            }
            nav.active {
                display: block;
            }
            nav ul {
                flex-direction: column;
            }
            nav li {
                margin: 5px 0;
            }
            .infobox {
                float: none;
                width: 100%;
                margin: 0 0 20px 0;
            }
            .search-box {
                flex-direction: column;
            }
            .search-input {
                border-radius: 4px;
                margin-bottom: 10px;
            }
            .search-button {
                border-radius: 4px;
                padding: 12px;
            }
            .social-share {
                flex-wrap: wrap;
            }
            .back-to-top {
                bottom: 20px;
                right: 20px;
                width: 45px;
                height: 45px;
                font-size: 20px;
            }
        }
        a, button, input, .star {
            min-height: 44px;
            min-width: 44px;
        }
        p, ul, ol, table, .image-container {
            margin-bottom: 20px;
        }
        .highlight-box {
            background-color: #f0f8ff;
            border-left: 4px solid #3366cc;
            padding: 20px;
            margin: 25px 0;
            border-radius: 0 4px 4px 0;
        }
        .update-badge {
            display: inline-block;
            background-color: #d4edda;
            color: #155724;
            padding: 5px 10px;
            border-radius: 4px;
            font-size: 14px;
            font-weight: 600;
            margin-left: 10px;
        }
        .content-navigation {
            background-color: #f8f9fa;
            padding: 15px;
            border-radius: 4px;
            margin-bottom: 30px;
            border: 1px solid #a2a9b1;
        }
        .content-navigation ul {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            margin: 0;
        }
        .content-navigation li {
            margin: 0 15px 10px 0;
        }
        .toc {
            background-color: #f8f9fa;
            border: 1px solid #a2a9b1;
            padding: 20px;
            margin-bottom: 30px;
            border-radius: 4px;
        }
        .toc-title {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 15px;
        }
        .toc ul {
            list-style: none;
            margin-left: 20px;
        }
        .toc li {
            margin-bottom: 8px;
        }
        .toc a {
            color: #3366cc;
        }