* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        :root {
            --primary: #4a6fa5;
            --secondary: #ff6b6b;
            --accent: #51cf66;
            --dark: #2d3436;
            --light: #f8f9fa;
            --gray: #adb5bd;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
            --transition: all 0.3s ease;
        }
        body {
            background-color: #f1f3f5;
            color: var(--dark);
            line-height: 1.7;
            overflow-x: hidden;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--secondary);
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background-color: white;
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 1000;
            padding: 15px 0;
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 2rem;
            font-weight: 800;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .my-logo i {
            color: var(--secondary);
        }
        .my-logo:hover {
            color: var(--secondary);
        }
        .breadcrumb {
            padding: 12px 0;
            background-color: #e9ecef;
            font-size: 0.9rem;
            margin-bottom: 20px;
        }
        .breadcrumb a {
            color: var(--dark);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .main-nav {
            display: flex;
            align-items: center;
        }
        .nav-links {
            display: flex;
            list-style: none;
            gap: 25px;
        }
        .nav-links a {
            font-weight: 600;
            font-size: 1.05rem;
            padding: 8px 5px;
            position: relative;
        }
        .nav-links a:after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 3px;
            background-color: var(--accent);
            transition: var(--transition);
        }
        .nav-links a:hover:after {
            width: 100%;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            cursor: pointer;
            color: var(--primary);
        }
        .hero {
            background: linear-gradient(135deg, var(--primary), #6c8dc3);
            color: white;
            padding: 60px 0;
            text-align: center;
            border-radius: 0 0 15px 15px;
            margin-bottom: 40px;
        }
        .hero h1 {
            font-size: 3.2rem;
            margin-bottom: 20px;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.2);
        }
        .hero p {
            font-size: 1.3rem;
            max-width: 800px;
            margin: 0 auto 30px;
            opacity: 0.95;
        }
        .search-box {
            max-width: 600px;
            margin: 30px auto 0;
            display: flex;
            border-radius: 50px;
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        .search-box input {
            flex: 1;
            padding: 18px 25px;
            border: none;
            font-size: 1.1rem;
            outline: none;
        }
        .search-box button {
            background-color: var(--secondary);
            color: white;
            border: none;
            padding: 0 30px;
            cursor: pointer;
            font-size: 1.1rem;
            font-weight: 600;
            transition: var(--transition);
        }
        .search-box button:hover {
            background-color: #ff5252;
        }
        .main-content {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            margin-bottom: 50px;
        }
        .article-content {
            background-color: white;
            padding: 40px;
            border-radius: 15px;
            box-shadow: var(--shadow);
        }
        .sidebar {
            background-color: white;
            padding: 25px;
            border-radius: 15px;
            box-shadow: var(--shadow);
            align-self: start;
        }
        h1 {
            font-size: 2.8rem;
            color: var(--primary);
            margin-bottom: 25px;
            line-height: 1.2;
        }
        h2 {
            font-size: 2.2rem;
            color: var(--dark);
            margin: 40px 0 20px;
            padding-bottom: 10px;
            border-bottom: 3px solid var(--accent);
        }
        h3 {
            font-size: 1.8rem;
            color: var(--primary);
            margin: 30px 0 15px;
        }
        h4 {
            font-size: 1.4rem;
            color: var(--secondary);
            margin: 25px 0 12px;
        }
        p {
            margin-bottom: 20px;
            font-size: 1.1rem;
        }
        .lead {
            font-size: 1.3rem;
            font-weight: 500;
            color: var(--dark);
            background-color: #e7f5ff;
            padding: 20px;
            border-left: 5px solid var(--primary);
            border-radius: 5px;
            margin-bottom: 30px;
        }
        strong {
            color: var(--secondary);
            font-weight: 700;
        }
        .highlight {
            background-color: #fff3bf;
            padding: 3px 6px;
            border-radius: 4px;
        }
        .article-img {
            width: 100%;
            max-height: 500px;
            object-fit: cover;
            border-radius: 10px;
            margin: 25px 0;
            box-shadow: var(--shadow);
        }
        .float-img {
            float: right;
            width: 45%;
            max-width: 500px;
            margin: 15px 0 20px 30px;
            border-radius: 10px;
            box-shadow: var(--shadow);
        }
        .interactive-section {
            background-color: #f8f9fa;
            border-left: 5px solid var(--accent);
            padding: 25px;
            border-radius: 10px;
            margin: 30px 0;
        }
        .rating-box {
            display: flex;
            align-items: center;
            gap: 10px;
            margin: 20px 0;
        }
        .stars {
            display: flex;
            gap: 5px;
        }
        .star {
            color: var(--gray);
            cursor: pointer;
            font-size: 1.8rem;
            transition: var(--transition);
        }
        .star:hover,
        .star.active {
            color: #ffd43b;
        }
        .comment-form, .rating-form {
            display: flex;
            flex-direction: column;
            gap: 15px;
            margin-top: 25px;
        }
        .form-group {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        input, textarea, select {
            padding: 14px;
            border: 1px solid var(--gray);
            border-radius: 8px;
            font-size: 1rem;
            transition: var(--transition);
        }
        input:focus, textarea:focus, select:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(74, 111, 165, 0.2);
        }
        .btn {
            padding: 14px 28px;
            background-color: var(--primary);
            color: white;
            border: none;
            border-radius: 8px;
            font-weight: 600;
            font-size: 1.1rem;
            cursor: pointer;
            transition: var(--transition);
            align-self: flex-start;
        }
        .btn:hover {
            background-color: #3a5a8c;
            transform: translateY(-3px);
            box-shadow: var(--shadow);
        }
        .btn-secondary {
            background-color: var(--secondary);
        }
        .btn-secondary:hover {
            background-color: #e05252;
        }
        .site-footer {
            background-color: var(--dark);
            color: white;
            padding: 50px 0 20px;
            margin-top: 60px;
        }
        .footer-content {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-section {
            flex: 1;
            min-width: 250px;
        }
        .footer-section h3 {
            color: white;
            font-size: 1.5rem;
            margin-bottom: 20px;
            border-bottom: 2px solid var(--accent);
            padding-bottom: 10px;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 12px;
        }
        .footer-links a {
            color: var(--light);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .footer-links a:hover {
            color: var(--accent);
            padding-left: 5px;
        }
        friend-link {
            display: inline-block;
            background-color: #495057;
            color: white;
            padding: 8px 15px;
            border-radius: 20px;
            margin: 5px;
            font-size: 0.9rem;
            transition: var(--transition);
        }
        friend-link:hover {
            background-color: var(--primary);
            transform: translateY(-3px);
        }
        .copyright {
            text-align: center;
            padding-top: 25px;
            border-top: 1px solid #495057;
            color: var(--gray);
            font-size: 0.95rem;
        }
        @media (max-width: 992px) {
            .main-content {
                grid-template-columns: 1fr;
            }
            .float-img {
                float: none;
                width: 100%;
                margin: 20px 0;
            }
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            .nav-links {
                position: fixed;
                top: 80px;
                right: -100%;
                flex-direction: column;
                background-color: white;
                width: 80%;
                max-width: 300px;
                height: calc(100vh - 80px);
                padding: 40px 20px;
                box-shadow: -5px 0 15px rgba(0,0,0,0.1);
                transition: right 0.4s ease;
                z-index: 999;
            }
            .nav-links.active {
                right: 0;
            }
            h1 {
                font-size: 2.4rem;
            }
            h2 {
                font-size: 1.9rem;
            }
            .hero {
                padding: 40px 0;
            }
            .hero h1 {
                font-size: 2.5rem;
            }
            .article-content {
                padding: 25px;
            }
        }
        @media (max-width: 576px) {
            .search-box {
                flex-direction: column;
                border-radius: 15px;
            }
            .search-box input, .search-box button {
                width: 100%;
                border-radius: 0;
                padding: 16px;
            }
            .hero h1 {
                font-size: 2rem;
            }
            .btn {
                width: 100%;
                text-align: center;
            }
        }
        .update-time {
            background-color: #e7f5ff;
            padding: 12px 20px;
            border-radius: 8px;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 25px;
            font-size: 0.95rem;
            color: var(--primary);
        }
        .tag-list {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin: 25px 0;
        }
        .tag {
            background-color: #e9ecef;
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 0.9rem;
        }
        .quote {
            font-style: italic;
            border-left: 4px solid var(--secondary);
            padding-left: 20px;
            margin: 25px 0;
            color: #555;
            font-size: 1.2rem;
        }
        .toc {
            background-color: #f8f9fa;
            padding: 25px;
            border-radius: 10px;
            margin-bottom: 30px;
        }
        .toc h3 {
            margin-top: 0;
        }
        .toc ul {
            list-style-position: inside;
            column-count: 2;
        }
        .toc li {
            margin-bottom: 10px;
        }
        .stats-box {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 20px;
            margin: 30px 0;
        }
        .stat {
            background-color: white;
            padding: 25px;
            border-radius: 10px;
            text-align: center;
            box-shadow: var(--shadow);
            border-top: 5px solid var(--accent);
        }
        .stat-number {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--primary);
            display: block;
            line-height: 1;
        }