* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        :root {
            --primary-green: #4CAF50;
            --secondary-orange: #FF9800;
            --accent-blue: #2196F3;
            --dark-bg: #1a1a2e;
            --light-bg: #f5f7fa;
            --text-dark: #333;
            --text-light: #f8f9fa;
            --shadow: 0 4px 12px rgba(0,0,0,0.1);
            --transition: all 0.3s ease;
        }
        body {
            background-color: var(--light-bg);
            color: var(--text-dark);
            line-height: 1.7;
            max-width: 100vw;
            overflow-x: hidden;
        }
        header {
            background: linear-gradient(135deg, var(--dark-bg) 0%, #16213e 100%);
            color: var(--text-light);
            padding: 1rem 2rem;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
        }
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            max-width: 1400px;
            margin: 0 auto;
            flex-wrap: wrap;
        }
        .my-logo {
            font-size: 2.2rem;
            font-weight: 800;
            text-decoration: none;
            color: var(--primary-green);
            display: flex;
            align-items: center;
            gap: 10px;
            transition: var(--transition);
        }
        .my-logo:hover {
            color: var(--secondary-orange);
            transform: scale(1.05);
        }
        .my-logo i {
            font-size: 2.5rem;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.8rem;
            cursor: pointer;
            padding: 0.5rem;
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
            align-items: center;
        }
        .main-nav a {
            color: var(--text-light);
            text-decoration: none;
            font-weight: 600;
            padding: 0.5rem 1rem;
            border-radius: 4px;
            transition: var(--transition);
        }
        .main-nav a:hover {
            background-color: var(--accent-blue);
            color: white;
            transform: translateY(-3px);
        }
        .breadcrumb {
            background-color: rgba(255,255,255,0.1);
            padding: 0.8rem 2rem;
            font-size: 0.9rem;
            border-radius: 0 0 8px 8px;
            margin-top: 1rem;
        }
        .breadcrumb a {
            color: var(--secondary-orange);
            text-decoration: none;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        main {
            max-width: 1200px;
            margin: 2rem auto;
            padding: 0 2rem;
            display: grid;
            grid-template-columns: 1fr;
            gap: 3rem;
        }
        .search-section {
            background: white;
            padding: 2rem;
            border-radius: 12px;
            box-shadow: var(--shadow);
            text-align: center;
        }
        .search-section form {
            display: flex;
            max-width: 600px;
            margin: 0 auto;
            gap: 0.5rem;
        }
        .search-section input {
            flex: 1;
            padding: 1rem;
            border: 2px solid var(--primary-green);
            border-radius: 50px;
            font-size: 1rem;
            outline: none;
            transition: var(--transition);
        }
        .search-section input:focus {
            border-color: var(--accent-blue);
            box-shadow: 0 0 0 3px rgba(33,150,243,0.2);
        }
        .search-section button {
            background: linear-gradient(to right, var(--primary-green), var(--accent-blue));
            color: white;
            border: none;
            padding: 1rem 2rem;
            border-radius: 50px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .search-section button:hover {
            transform: translateY(-3px);
            box-shadow: 0 6px 12px rgba(76,175,80,0.3);
        }
        article {
            background: white;
            padding: 3rem;
            border-radius: 16px;
            box-shadow: var(--shadow);
        }
        h1 {
            color: var(--dark-bg);
            font-size: 2.8rem;
            margin-bottom: 1.5rem;
            line-height: 1.2;
            border-bottom: 4px solid var(--secondary-orange);
            padding-bottom: 1rem;
        }
        h2 {
            color: var(--primary-green);
            font-size: 2rem;
            margin: 2.5rem 0 1.2rem;
            padding-left: 1rem;
            border-left: 5px solid var(--accent-blue);
        }
        h3 {
            color: var(--accent-blue);
            font-size: 1.5rem;
            margin: 2rem 0 1rem;
        }
        h4 {
            color: var(--secondary-orange);
            font-size: 1.2rem;
            margin: 1.5rem 0 0.8rem;
        }
        p {
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
            text-align: justify;
        }
        .update-time {
            background-color: #e8f5e9;
            padding: 0.8rem;
            border-radius: 8px;
            font-style: italic;
            color: #2e7d32;
            margin-bottom: 2rem;
            display: inline-block;
        }
        .highlight {
            background-color: #fff9c4;
            padding: 0.2rem 0.5rem;
            border-radius: 4px;
            font-weight: 600;
        }
        .article-img {
            width: 100%;
            max-width: 800px;
            height: auto;
            border-radius: 12px;
            margin: 2rem auto;
            display: block;
            box-shadow: 0 8px 20px rgba(0,0,0,0.15);
            transition: var(--transition);
        }
        .article-img:hover {
            transform: scale(1.01);
            box-shadow: 0 12px 25px rgba(0,0,0,0.2);
        }
        article a {
            color: var(--accent-blue);
            text-decoration: none;
            font-weight: 600;
            border-bottom: 2px dotted var(--accent-blue);
            transition: var(--transition);
        }
        article a:hover {
            color: var(--primary-green);
            border-bottom: 2px solid var(--primary-green);
            background-color: #e8f5e9;
            padding: 0 2px;
        }
        .user-interaction {
            background: white;
            padding: 2.5rem;
            border-radius: 16px;
            box-shadow: var(--shadow);
            margin-top: 2rem;
        }
        .rating-form, .comment-form {
            background: var(--light-bg);
            padding: 2rem;
            border-radius: 12px;
            margin: 2rem 0;
        }
        .rating-form {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 1.5rem;
        }
        .rating-form label, .comment-form label {
            font-weight: 700;
            color: var(--dark-bg);
            font-size: 1.1rem;
        }
        select, textarea {
            padding: 1rem;
            border: 2px solid #ddd;
            border-radius: 8px;
            font-size: 1rem;
            transition: var(--transition);
            flex: 1;
            min-width: 200px;
        }
        select:focus, textarea:focus {
            border-color: var(--accent-blue);
            outline: none;
            box-shadow: 0 0 0 3px rgba(33,150,243,0.2);
        }
        textarea {
            width: 100%;
            resize: vertical;
            min-height: 150px;
        }
        button[type="submit"] {
            background: linear-gradient(to right, var(--secondary-orange), #FF5722);
            color: white;
            border: none;
            padding: 1rem 2.5rem;
            border-radius: 8px;
            font-weight: 700;
            cursor: pointer;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        button[type="submit"]:hover {
            transform: translateY(-3px);
            box-shadow: 0 6px 15px rgba(255,152,0,0.4);
        }
        footer {
            background: var(--dark-bg);
            color: var(--text-light);
            padding: 3rem 2rem 1.5rem;
            margin-top: 4rem;
        }
        .footer-content {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
        }
        friend-link {
            display: block;
            background: rgba(255,255,255,0.05);
            padding: 1.5rem;
            border-radius: 8px;
            margin-bottom: 2rem;
        }
        friend-link a {
            color: var(--secondary-orange);
            text-decoration: none;
            font-weight: 600;
            padding: 0.5rem 1rem;
            background: rgba(255,152,0,0.1);
            border-radius: 4px;
            display: inline-block;
            margin: 0.5rem;
            transition: var(--transition);
        }
        friend-link a:hover {
            background: var(--secondary-orange);
            color: var(--dark-bg);
            transform: translateY(-2px);
        }
        .copyright {
            text-align: center;
            padding-top: 2rem;
            border-top: 1px solid rgba(255,255,255,0.1);
            font-size: 0.9rem;
            color: #aaa;
            margin-top: 2rem;
        }
        @media (max-width: 992px) {
            .header-container {
                flex-direction: column;
                align-items: flex-start;
                gap: 1rem;
            }
            .main-nav ul {
                flex-wrap: wrap;
                justify-content: center;
            }
            h1 {
                font-size: 2.3rem;
            }
            article, .user-interaction {
                padding: 2rem;
            }
        }
        @media (max-width: 768px) {
            .hamburger {
                display: block;
                position: absolute;
                right: 2rem;
                top: 1.5rem;
            }
            .main-nav ul {
                display: none;
                flex-direction: column;
                width: 100%;
                background-color: rgba(26,26,46,0.95);
                padding: 1rem;
                border-radius: 8px;
                margin-top: 1rem;
            }
            .main-nav ul.show {
                display: flex;
            }
            .main-nav li {
                width: 100%;
                text-align: center;
            }
            .search-section form {
                flex-direction: column;
            }
            .search-section button {
                justify-content: center;
            }
            .rating-form {
                flex-direction: column;
                align-items: stretch;
            }
            select {
                width: 100%;
            }
            h1 {
                font-size: 1.9rem;
            }
            h2 {
                font-size: 1.6rem;
            }
            main {
                padding: 0 1rem;
            }
        }
        @media (max-width: 480px) {
            header {
                padding: 1rem;
            }
            .my-logo {
                font-size: 1.7rem;
            }
            article {
                padding: 1.5rem;
            }
            .user-interaction {
                padding: 1.5rem;
            }
            .footer-content {
                grid-template-columns: 1fr;
            }
        }
        .text-center {
            text-align: center;
        }
        .mt-2 {
            margin-top: 2rem;
        }
        .mb-2 {
            margin-bottom: 2rem;
        }
        .emoji {
            font-size: 1.2em;
            margin: 0 3px;
        }
        @keyframes pulse {
            0% { transform: scale(1); }
            50% { transform: scale(1.05); }
            100% { transform: scale(1); }
        }
        .pulse:hover {
            animation: pulse 0.5s ease-in-out;
        }