* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.8;
            color: #333;
            background: linear-gradient(135deg, #f5f7fa 0%, #e4e8f0 100%);
            max-width: 100%;
            overflow-x: hidden;
        }
        h1, h2, h3, h4 {
            font-family: 'Georgia', serif;
            color: #1a365d;
            margin-bottom: 1.2rem;
            line-height: 1.3;
        }
        h1 {
            font-size: 3.2rem;
            border-bottom: 4px solid #e53e3e;
            padding-bottom: 0.8rem;
            margin-top: 2rem;
        }
        h2 {
            font-size: 2.4rem;
            color: #2d3748;
            padding-left: 0.8rem;
            border-left: 5px solid #4299e1;
            margin-top: 3rem;
        }
        h3 {
            font-size: 1.8rem;
            color: #4a5568;
            margin-top: 2.5rem;
        }
        h4 {
            font-size: 1.4rem;
            color: #718096;
            margin-top: 2rem;
        }
        p {
            margin-bottom: 1.8rem;
            font-size: 1.15rem;
            text-align: justify;
            hyphens: auto;
        }
        .container {
            width: 100%;
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 20px;
        }
        header {
            background: linear-gradient(90deg, #1a202c 0%, #2d3748 100%);
            color: white;
            padding: 1.5rem 0;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 900;
            background: linear-gradient(90deg, #e53e3e 0%, #ed8936 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            text-decoration: none;
            transition: transform 0.3s ease;
        }
        .my-logo:hover {
            transform: scale(1.05);
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 2.5rem;
            flex-wrap: wrap;
        }
        .main-nav a {
            color: #e2e8f0;
            text-decoration: none;
            font-weight: 600;
            font-size: 1.1rem;
            padding: 0.5rem 0;
            position: relative;
            transition: color 0.3s ease;
        }
        .main-nav a:hover {
            color: #fbd38d;
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 3px;
            background: #e53e3e;
            transition: width 0.3s ease;
        }
        .main-nav a:hover::after {
            width: 100%;
        }
        .hamburger {
            display: none;
            font-size: 1.8rem;
            background: none;
            border: none;
            color: white;
            cursor: pointer;
            padding: 0.5rem;
        }
        .breadcrumb {
            padding: 1.2rem 0;
            background: #edf2f7;
            border-radius: 0 0 8px 8px;
            margin-bottom: 2rem;
        }
        .breadcrumb ul {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
            gap: 0.8rem;
        }
        .breadcrumb li:not(:last-child)::after {
            content: '›';
            margin-left: 0.8rem;
            color: #718096;
        }
        .breadcrumb a {
            color: #4a5568;
            text-decoration: none;
            transition: color 0.3s;
        }
        .breadcrumb a:hover {
            color: #e53e3e;
            text-decoration: underline;
        }
        main {
            display: grid;
            grid-template-columns: 1fr 350px;
            gap: 3.5rem;
            padding: 2.5rem 0;
        }
        .article-content {
            background: white;
            padding: 3rem;
            border-radius: 16px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
        }
        .sidebar {
            background: white;
            padding: 2.5rem;
            border-radius: 16px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
            align-self: start;
            position: sticky;
            top: 140px;
        }
        .search-box {
            margin-bottom: 2.5rem;
        }
        .search-box h3 {
            margin-bottom: 1.2rem;
            font-size: 1.5rem;
        }
        .search-form {
            display: flex;
        }
        .search-input {
            flex: 1;
            padding: 0.9rem 1.2rem;
            border: 2px solid #cbd5e0;
            border-radius: 8px 0 0 8px;
            font-size: 1rem;
            transition: border-color 0.3s;
        }
        .search-input:focus {
            outline: none;
            border-color: #4299e1;
        }
        .search-btn {
            background: #4299e1;
            color: white;
            border: none;
            padding: 0 1.8rem;
            border-radius: 0 8px 8px 0;
            cursor: pointer;
            transition: background 0.3s;
            font-size: 1.1rem;
        }
        .search-btn:hover {
            background: #3182ce;
        }
        .rating-section, .comment-section {
            background: #f7fafc;
            padding: 2.2rem;
            border-radius: 12px;
            margin-top: 3rem;
            border: 1px solid #e2e8f0;
        }
        .rating-section h3, .comment-section h3 {
            display: flex;
            align-items: center;
            gap: 0.8rem;
            color: #2d3748;
        }
        .stars {
            display: flex;
            gap: 0.5rem;
            margin: 1.5rem 0;
            font-size: 1.8rem;
            color: #ecc94b;
        }
        .star {
            cursor: pointer;
            transition: transform 0.2s;
        }
        .star:hover {
            transform: scale(1.2);
        }
        .rating-form, .comment-form {
            display: flex;
            flex-direction: column;
            gap: 1.5rem;
        }
        .form-group {
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }
        .form-input, .form-textarea {
            padding: 1rem;
            border: 2px solid #cbd5e0;
            border-radius: 8px;
            font-size: 1rem;
            transition: border-color 0.3s;
        }
        .form-textarea {
            min-height: 150px;
            resize: vertical;
        }
        .form-input:focus, .form-textarea:focus {
            outline: none;
            border-color: #4299e1;
        }
        .submit-btn {
            background: #38a169;
            color: white;
            border: none;
            padding: 1.2rem;
            border-radius: 8px;
            cursor: pointer;
            font-size: 1.1rem;
            font-weight: 600;
            transition: background 0.3s, transform 0.2s;
        }
        .submit-btn:hover {
            background: #2f855a;
            transform: translateY(-2px);
        }
        .featured-image {
            width: 100%;
            height: 450px;
            object-fit: cover;
            border-radius: 12px;
            margin: 2.5rem 0;
            box-shadow: 0 12px 24px rgba(0, 0, 0, 0.15);
            transition: transform 0.5s ease;
        }
        .featured-image:hover {
            transform: scale(1.01);
        }
        .highlight {
            background: linear-gradient(120deg, #fed7e2 0%, #feebc8 100%);
            padding: 2.5rem;
            border-radius: 12px;
            border-left: 6px solid #e53e3e;
            margin: 2.5rem 0;
        }
        .highlight p:last-child {
            margin-bottom: 0;
        }
        .info-box {
            background: #ebf8ff;
            border: 2px solid #bee3f8;
            border-radius: 10px;
            padding: 1.8rem;
            margin: 2rem 0;
        }
        .keyword-link {
            color: #2b6cb0;
            text-decoration: none;
            font-weight: 600;
            border-bottom: 2px dotted #90cdf4;
            transition: all 0.3s;
        }
        .keyword-link:hover {
            color: #1a365d;
            border-bottom-style: solid;
        }
        footer {
            background: #1a202c;
            color: #cbd5e0;
            padding: 4rem 0 2.5rem;
            margin-top: 4rem;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 3rem;
            margin-bottom: 3rem;
        }
        .footer-section h4 {
            color: #fbd38d;
            font-size: 1.4rem;
            margin-bottom: 1.5rem;
        }
        .friend-links {
            display: flex;
            flex-direction: column;
            gap: 0.8rem;
        }
        .friend-links a {
            color: #90cdf4;
            text-decoration: none;
            transition: color 0.3s, padding-left 0.3s;
        }
        .friend-links a:hover {
            color: #fbd38d;
            padding-left: 8px;
        }
        .copyright {
            text-align: center;
            padding-top: 2.5rem;
            border-top: 1px solid #4a5568;
            font-size: 0.95rem;
            color: #a0aec0;
        }
        .update-time {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: #2d3748;
            color: #fbd38d;
            padding: 0.6rem 1.2rem;
            border-radius: 20px;
            font-size: 0.9rem;
            margin: 1.5rem 0;
        }
        @media (max-width: 1024px) {
            main {
                grid-template-columns: 1fr;
                gap: 2.5rem;
            }
            .sidebar {
                position: static;
            }
            h1 {
                font-size: 2.8rem;
            }
            h2 {
                font-size: 2.1rem;
            }
        }
        @media (max-width: 768px) {
            .header-content {
                flex-direction: column;
                align-items: flex-start;
                gap: 1.5rem;
            }
            .hamburger {
                display: block;
                position: absolute;
                top: 1.8rem;
                right: 20px;
            }
            .main-nav {
                width: 100%;
                display: none;
            }
            .main-nav.active {
                display: block;
            }
            .main-nav ul {
                flex-direction: column;
                gap: 1.2rem;
                padding-top: 1.5rem;
                border-top: 1px solid #4a5568;
            }
            .article-content, .sidebar {
                padding: 2rem;
            }
            h1 {
                font-size: 2.3rem;
            }
            h2 {
                font-size: 1.9rem;
            }
            .featured-image {
                height: 300px;
            }
        }
        @media (max-width: 480px) {
            .search-form {
                flex-direction: column;
            }
            .search-input {
                border-radius: 8px;
                margin-bottom: 0.8rem;
            }
            .search-btn {
                border-radius: 8px;
                padding: 0.9rem;
            }
            .article-content {
                padding: 1.5rem;
            }
            h1 {
                font-size: 2rem;
            }
        }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .article-content, .sidebar {
            animation: fadeIn 0.8s ease-out;
        }
        .text-bold {
            font-weight: 800;
            color: #2d3748;
        }
        .emoji {
            font-size: 1.3em;
            margin-right: 0.3em;
        }
        .line-break {
            height: 1px;
            background: linear-gradient(90deg, transparent, #cbd5e0, transparent);
            margin: 2.5rem 0;
        }