* {
            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: linear-gradient(135deg, #f5f7fa 0%, #e4edf5 100%);
            max-width: 1600px;
            margin: 0 auto;
            padding: 0 10px;
        }
        a {
            color: #2980b9;
            text-decoration: none;
            transition: color 0.3s;
        }
        a:hover {
            color: #e74c3c;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            width: 100%;
            padding-right: 15px;
            padding-left: 15px;
            margin-right: auto;
            margin-left: auto;
        }
        header {
            background: #2c3e50;
            color: white;
            padding: 1.2rem 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;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 800;
            color: #1abc9c;
            text-transform: uppercase;
            letter-spacing: 2px;
            background: linear-gradient(90deg, #1abc9c, #3498db);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .my-logo:hover {
            opacity: 0.9;
        }
        nav {
            display: flex;
            align-items: center;
        }
        .nav-links {
            display: flex;
            list-style: none;
            gap: 2rem;
        }
        .nav-links a {
            color: #ecf0f1;
            font-weight: 600;
            padding: 0.5rem 0.8rem;
            border-radius: 4px;
            transition: background 0.3s;
        }
        .nav-links a:hover,
        .nav-links a.active {
            background: rgba(52, 152, 219, 0.3);
        }
        .hamburger {
            display: none;
            cursor: pointer;
            font-size: 1.8rem;
            color: #ecf0f1;
        }
        .breadcrumb {
            padding: 1rem 0;
            background: #f8f9fa;
            border-bottom: 1px solid #dee2e6;
            font-size: 0.9rem;
        }
        .breadcrumb a {
            color: #7f8c8d;
        }
        .breadcrumb a:hover {
            color: #3498db;
        }
        .search-box {
            max-width: 600px;
            margin: 2rem auto;
            padding: 1rem;
            background: white;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        }
        .search-box h2 {
            margin-bottom: 1rem;
            color: #2c3e50;
        }
        .search-form {
            display: flex;
        }
        .search-input {
            flex: 1;
            padding: 0.8rem 1rem;
            border: 2px solid #3498db;
            border-radius: 5px 0 0 5px;
            font-size: 1rem;
            outline: none;
        }
        .search-btn {
            background: #3498db;
            color: white;
            border: none;
            padding: 0.8rem 1.5rem;
            border-radius: 0 5px 5px 0;
            cursor: pointer;
            font-weight: 600;
            transition: background 0.3s;
        }
        .search-btn:hover {
            background: #2980b9;
        }
        main {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 2.5rem;
            margin: 2rem 0;
        }
        @media (max-width: 992px) {
            main {
                grid-template-columns: 1fr;
            }
        }
        .article-content {
            background: white;
            padding: 2.5rem;
            border-radius: 15px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.08);
        }
        .article-content h1 {
            font-size: 2.8rem;
            color: #2c3e50;
            margin-bottom: 1.5rem;
            line-height: 1.2;
            border-bottom: 4px solid #1abc9c;
            padding-bottom: 0.8rem;
        }
        .article-content h2 {
            font-size: 2rem;
            color: #2980b9;
            margin: 2.5rem 0 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px dashed #bdc3c7;
        }
        .article-content h3 {
            font-size: 1.6rem;
            color: #34495e;
            margin: 2rem 0 1rem;
        }
        .article-content h4 {
            font-size: 1.3rem;
            color: #7f8c8d;
            margin: 1.5rem 0 0.8rem;
        }
        .article-content p {
            margin-bottom: 1.5rem;
            text-align: justify;
            font-size: 1.1rem;
        }
        .article-content p.lead {
            font-size: 1.3rem;
            color: #2c3e50;
            font-weight: 500;
            background: #f8f9fa;
            padding: 1.2rem;
            border-left: 5px solid #3498db;
            border-radius: 0 8px 8px 0;
        }
        .article-content strong {
            color: #e74c3c;
            font-weight: 700;
        }
        .article-content em {
            color: #27ae60;
            font-style: italic;
        }
        .article-content ul, .article-content ol {
            margin: 1.5rem 0 1.5rem 2.5rem;
        }
        .article-content li {
            margin-bottom: 0.8rem;
        }
        .highlight-box {
            background: linear-gradient(to right, #e3f2fd, #f3e5f5);
            border-left: 6px solid #9b59b6;
            padding: 1.8rem;
            margin: 2rem 0;
            border-radius: 0 10px 10px 0;
        }
        .image-container {
            margin: 2.5rem auto;
            text-align: center;
        }
        .image-container img {
            border-radius: 12px;
            box-shadow: 0 8px 20px rgba(0,0,0,0.15);
            border: 5px solid white;
            transition: transform 0.5s;
            max-width: 80%;
            margin: 0 auto;
        }
        .image-container img:hover {
            transform: scale(1.02);
        }
        .image-caption {
            font-style: italic;
            color: #7f8c8d;
            margin-top: 0.8rem;
            font-size: 0.95rem;
        }
        .update-time {
            background: #fff8e1;
            padding: 1rem;
            border-radius: 8px;
            margin: 2rem 0;
            text-align: center;
            border: 1px solid #ffd54f;
            font-weight: 600;
            color: #ff8f00;
        }
        .link-list {
            background: #f1f8ff;
            padding: 1.5rem;
            border-radius: 10px;
            margin: 2rem 0;
        }
        .link-list h3 {
            color: #1a73e8;
            margin-top: 0;
        }
        .link-list ul {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 0.8rem;
            list-style: none;
            margin-left: 0;
        }
        .link-list li {
            background: white;
            padding: 0.8rem;
            border-radius: 6px;
            border-left: 4px solid #34a853;
        }
        aside {
            background: white;
            padding: 1.8rem;
            border-radius: 15px;
            box-shadow: 0 8px 20px rgba(0,0,0,0.06);
            height: fit-content;
            position: sticky;
            top: 120px;
        }
        aside h3 {
            color: #2c3e50;
            margin-bottom: 1.2rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #1abc9c;
        }
        .rating-widget {
            text-align: center;
            padding: 1.5rem;
            background: #f8f9fa;
            border-radius: 10px;
            margin-bottom: 2rem;
        }
        .stars {
            font-size: 2rem;
            color: #f39c12;
            margin: 1rem 0;
            cursor: pointer;
        }
        .stars span {
            margin: 0 3px;
            transition: color 0.2s;
        }
        .stars span:hover,
        .stars span.active {
            color: #e67e22;
        }
        .rating-btn {
            background: #27ae60;
            color: white;
            border: none;
            padding: 0.7rem 1.5rem;
            border-radius: 5px;
            cursor: pointer;
            font-weight: 600;
            margin-top: 1rem;
            width: 100%;
            transition: background 0.3s;
        }
        .rating-btn:hover {
            background: #219653;
        }
        .toc {
            background: #f0f7ff;
            padding: 1.5rem;
            border-radius: 10px;
        }
        .toc ul {
            list-style: none;
            margin-left: 0;
        }
        .toc li {
            margin-bottom: 0.7rem;
        }
        .toc a {
            color: #2c3e50;
            display: block;
            padding: 0.5rem;
            border-radius: 4px;
            transition: all 0.3s;
        }
        .toc a:hover {
            background: #d6eaf8;
            padding-left: 1rem;
        }
        .comments-section {
            background: white;
            padding: 2.5rem;
            border-radius: 15px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.08);
            margin: 2rem 0;
        }
        .comment-form {
            display: flex;
            flex-direction: column;
            gap: 1.2rem;
            margin-bottom: 2.5rem;
        }
        .form-group {
            display: flex;
            flex-direction: column;
        }
        .form-group label {
            margin-bottom: 0.5rem;
            font-weight: 600;
            color: #2c3e50;
        }
        .form-group input,
        .form-group textarea {
            padding: 0.9rem;
            border: 1px solid #bdc3c7;
            border-radius: 6px;
            font-family: inherit;
            font-size: 1rem;
            transition: border 0.3s;
        }
        .form-group input:focus,
        .form-group textarea:focus {
            border-color: #3498db;
            outline: none;
            box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.2);
        }
        .comment-btn {
            background: #3498db;
            color: white;
            border: none;
            padding: 1rem 2rem;
            border-radius: 6px;
            cursor: pointer;
            font-weight: 700;
            font-size: 1.1rem;
            transition: background 0.3s;
            align-self: flex-start;
        }
        .comment-btn:hover {
            background: #2980b9;
        }
        .comment-list {
            margin-top: 2.5rem;
        }
        .comment {
            background: #f8f9fa;
            padding: 1.5rem;
            border-radius: 10px;
            margin-bottom: 1.5rem;
            border-left: 5px solid #3498db;
        }
        .comment-header {
            display: flex;
            justify-content: space-between;
            margin-bottom: 0.8rem;
            font-size: 0.95rem;
            color: #7f8c8d;
        }
        .comment-author {
            font-weight: 700;
            color: #2c3e50;
        }
        footer {
            background: #2c3e50;
            color: #ecf0f1;
            padding: 3rem 0 1.5rem;
            margin-top: 3rem;
            border-top: 6px solid #1abc9c;
        }
        .footer-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2.5rem;
            margin-bottom: 2.5rem;
        }
        .footer-logo {
            font-size: 2rem;
            font-weight: 800;
            color: #1abc9c;
            margin-bottom: 1rem;
        }
        .footer-links h4 {
            color: #1abc9c;
            margin-bottom: 1.2rem;
            font-size: 1.3rem;
        }
        .footer-links ul {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 0.7rem;
        }
        .footer-links a {
            color: #bdc3c7;
            transition: color 0.3s;
        }
        .footer-links a:hover {
            color: #1abc9c;
            padding-left: 5px;
        }
        friend-link {
            display: block;
            background: rgba(255,255,255,0.05);
            padding: 1rem;
            border-radius: 6px;
            margin: 1rem 0;
            border-left: 4px solid #3498db;
        }
        .copyright {
            text-align: center;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(255,255,255,0.1);
            color: #95a5a6;
            font-size: 0.95rem;
        }
        @media (max-width: 768px) {
            .header-container {
                flex-direction: column;
                align-items: flex-start;
            }
            .nav-links {
                display: none;
                flex-direction: column;
                width: 100%;
                margin-top: 1rem;
                gap: 0;
            }
            .nav-links.active {
                display: flex;
            }
            .nav-links li {
                width: 100%;
                text-align: center;
            }
            .nav-links a {
                display: block;
                padding: 1rem;
                border-bottom: 1px solid rgba(255,255,255,0.1);
            }
            .hamburger {
                display: block;
                position: absolute;
                top: 1.2rem;
                right: 15px;
            }
            .article-content {
                padding: 1.5rem;
            }
            .article-content h1 {
                font-size: 2.2rem;
            }
            .article-content h2 {
                font-size: 1.8rem;
            }
            .search-form {
                flex-direction: column;
            }
            .search-input,
            .search-btn {
                border-radius: 5px;
                width: 100%;
            }
            .search-btn {
                margin-top: 0.8rem;
            }
        }