* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            color: #333;
            background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
        }
        a {
            color: #2c3e50;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        a:hover {
            color: #3498db;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        header {
            background: #2c3e50;
            color: #ecf0f1;
            padding: 1rem 0;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .header-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 2rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .my-logo {
            font-size: 2rem;
            font-weight: 700;
            color: #3498db;
            text-shadow: 1px 1px 3px rgba(0,0,0,0.3);
        }
        .my-logo:hover {
            color: #1abc9c;
        }
        nav ul {
            display: flex;
            list-style: none;
        }
        nav ul li {
            margin-left: 2rem;
        }
        nav ul li a {
            color: #ecf0f1;
            font-weight: 600;
            padding: 0.5rem 1rem;
            border-radius: 5px;
        }
        nav ul li a:hover {
            background: #3498db;
            color: white;
        }
        .hamburger {
            display: none;
            font-size: 1.5rem;
            background: none;
            border: none;
            color: #ecf0f1;
            cursor: pointer;
        }
        .breadcrumb {
            max-width: 1200px;
            margin: 1rem auto;
            padding: 0 2rem;
            font-size: 0.9rem;
            color: #7f8c8d;
        }
        .breadcrumb a {
            color: #3498db;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        main {
            max-width: 1200px;
            margin: 2rem auto;
            padding: 0 2rem;
            background: white;
            border-radius: 15px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.1);
            overflow: hidden;
        }
        article {
            padding: 2rem;
        }
        h1 {
            font-size: 3rem;
            color: #2c3e50;
            margin-bottom: 1rem;
            text-align: center;
            border-bottom: 4px solid #3498db;
            padding-bottom: 1rem;
        }
        h2 {
            font-size: 2.2rem;
            color: #2980b9;
            margin: 2rem 0 1rem;
            padding-left: 1rem;
            border-left: 5px solid #1abc9c;
        }
        h3 {
            font-size: 1.8rem;
            color: #16a085;
            margin: 1.5rem 0 1rem;
        }
        h4 {
            font-size: 1.4rem;
            color: #27ae60;
            margin: 1.2rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.2rem;
            text-align: justify;
            font-size: 1.1rem;
            line-height: 1.8;
        }
        .highlight {
            background: #f8f9fa;
            border-left: 5px solid #3498db;
            padding: 1.5rem;
            margin: 1.5rem 0;
            border-radius: 0 10px 10px 0;
        }
        .emoji {
            font-size: 1.2em;
            margin-right: 0.5rem;
        }
        .feature-img {
            width: 80%;
            margin: 2rem auto;
            border-radius: 10px;
            box-shadow: 0 8px 20px rgba(0,0,0,0.2);
            border: 5px solid #3498db;
        }
        .search-box {
            margin: 2rem 0;
            text-align: center;
        }
        .search-box form {
            display: flex;
            max-width: 600px;
            margin: 0 auto;
        }
        .search-box input {
            flex: 1;
            padding: 1rem;
            border: 2px solid #3498db;
            border-radius: 50px 0 0 50px;
            font-size: 1rem;
            outline: none;
        }
        .search-box button {
            padding: 1rem 2rem;
            background: #3498db;
            color: white;
            border: none;
            border-radius: 0 50px 50px 0;
            cursor: pointer;
            font-weight: 600;
            transition: background 0.3s ease;
        }
        .search-box button:hover {
            background: #2980b9;
        }
        .user-interaction {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
            margin: 3rem 0;
        }
        .comment-form, .score-form {
            background: #f8f9fa;
            padding: 2rem;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
        }
        .comment-form h3, .score-form h3 {
            margin-top: 0;
        }
        .form-group {
            margin-bottom: 1.5rem;
        }
        .form-group label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
            color: #2c3e50;
        }
        .form-group input,
        .form-group textarea,
        .form-group select {
            width: 100%;
            padding: 0.8rem;
            border: 1px solid #bdc3c7;
            border-radius: 5px;
            font-size: 1rem;
            transition: border 0.3s ease;
        }
        .form-group input:focus,
        .form-group textarea:focus,
        .form-group select:focus {
            border-color: #3498db;
            outline: none;
        }
        .form-group textarea {
            min-height: 150px;
            resize: vertical;
        }
        .stars {
            display: flex;
            gap: 0.5rem;
            font-size: 2rem;
            color: #f1c40f;
            margin-bottom: 1rem;
        }
        .stars i {
            cursor: pointer;
            transition: transform 0.2s ease;
        }
        .stars i:hover {
            transform: scale(1.2);
        }
        button[type="submit"] {
            background: #2ecc71;
            color: white;
            padding: 1rem 2rem;
            border: none;
            border-radius: 5px;
            font-size: 1.1rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.3s ease;
            width: 100%;
        }
        button[type="submit"]:hover {
            background: #27ae60;
        }
        footer {
            background: #2c3e50;
            color: #ecf0f1;
            padding: 3rem 2rem 2rem;
            margin-top: 3rem;
        }
        .footer-container {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
        }
        friend-link {
            display: block;
            margin-bottom: 1rem;
        }
        friend-link a {
            color: #3498db;
            font-weight: 600;
        }
        friend-link a:hover {
            color: #1abc9c;
            text-decoration: underline;
        }
        .copyright {
            text-align: center;
            margin-top: 2rem;
            padding-top: 2rem;
            border-top: 1px solid #7f8c8d;
            font-size: 0.9rem;
            color: #bdc3c7;
        }
        .update-time {
            font-style: italic;
            color: #95a5a6;
            text-align: center;
            margin-top: 1rem;
        }
        @media (max-width: 768px) {
            .header-container {
                flex-wrap: wrap;
            }
            nav ul {
                display: none;
                flex-direction: column;
                width: 100%;
                margin-top: 1rem;
            }
            nav ul.active {
                display: flex;
            }
            nav ul li {
                margin: 0.5rem 0;
                text-align: center;
            }
            .hamburger {
                display: block;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.8rem;
            }
            h3 {
                font-size: 1.5rem;
            }
            .feature-img {
                width: 100%;
            }
            .user-interaction {
                grid-template-columns: 1fr;
            }
        }