:root {
            --primary: #4a6cf7;
            --primary-dark: #3a5ce5;
            --secondary: #6c757d;
            --light: #f8f9fa;
            --dark: #212529;
            --success: #28a745;
            --danger: #dc3545;
            --border-radius: 8px;
            --box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
            --transition: all 0.3s ease;
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        
        body {
            background-color: #dbefe9;
            color: var(--dark);
            line-height: 1.6;
        }
        
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        
        /* 导航栏样式 */
        header {
            background-color: white;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
            position: sticky;
            top: 0;
            z-index: 100;
        }
        
        .navbar {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 0;
        }
        
        .logo {
            font-size: 24px;
            font-weight: 700;
            color: var(--primary);
            text-decoration: none;
            display: flex;
            align-items: center;
        }
        
        .logo span {
            color: var(--dark);
        }
        
        .nav-links {
            display: flex;
            list-style: none;
        }
        
        .nav-links li {
            margin-left: 30px;
        }
        
        .nav-links a {
            text-decoration: none;
            color: var(--dark);
            font-weight: 500;
            transition: color 0.3s;
        }
        
        .nav-links a:hover {
            color: var(--primary);
        }
        
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 15px;
        }
        
        .language-switcher {
            background: none;
            border: 1px solid #ddd;
            padding: 8px 12px;
            border-radius: var(--border-radius);
            cursor: pointer;
            display: flex;
            align-items: center;
            gap: 5px;
            transition: var(--transition);
        }
        
        .language-switcher:hover {
            background-color: #f5f5f5;
        }
        
        .cta-button {
            background-color: var(--primary);
            color: white;
            padding: 10px 20px;
            border-radius: var(--border-radius);
            text-decoration: none;
            font-weight: 500;
            transition: background-color 0.3s;
        }
        
        .cta-button:hover {
            background-color: var(--primary-dark);
        }
        
        /* 英雄区域样式 */
        .hero {
            padding: 80px 0;
            text-align: center;
            background: linear-gradient(135deg, #f5f7ff 0%, #e6ecff 100%);
        }
        
        .hero h1 {
            font-size: 3rem;
            margin-bottom: 20px;
            color: var(--dark);
        }
        
        .hero p {
            font-size: 1.2rem;
            color: var(--secondary);
            max-width: 700px;
            margin: 0 auto 40px;
        }
        
        /* 生成器样式 */
        .generator-container {
            background-color: white;
            border-radius: var(--border-radius);
            padding: 40px;
            box-shadow: var(--box-shadow);
            margin-bottom: 80px;
        }
        
        .input-group {
            display: flex;
            margin-bottom: 30px;
        }
        
        .input-group textarea {
            flex: 1;
            padding: 15px;
            border: 1px solid #ddd;
            border-radius: var(--border-radius);
            font-size: 16px;
            outline: none;
            resize: vertical;
            min-height: 120px;
            font-family: inherit;
        }
        
        .input-group textarea:focus {
            border-color: var(--primary);
        }
        
        .options {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 20px;
            margin-bottom: 30px;
        }
        
        .option-group {
            display: flex;
            flex-direction: column;
        }
        
        .option-group label {
            margin-bottom: 8px;
            font-weight: 500;
            color: var(--dark);
        }
        
        .option-group select,
        .option-group input {
            padding: 12px;
            border: 1px solid #ddd;
            border-radius: var(--border-radius);
            font-size: 14px;
            outline: none;
        }
        
        .option-group select:focus,
        .option-group input:focus {
            border-color: var(--primary);
        }
        
        .generate-btn {
            background-color: var(--primary);
            color: white;
            border: none;
            padding: 15px 40px;
            border-radius: var(--border-radius);
            cursor: pointer;
            font-size: 16px;
            font-weight: 500;
            transition: background-color 0.3s;
            display: block;
            margin: 0 auto;
        }
        
        .generate-btn:hover {
            background-color: var(--primary-dark);
        }
        
        /* 结果区域样式 */
        .results {
            margin-top: 40px;
            text-align: center;
        }
        
        .qr-container {
            background: var(--light);
            border-radius: var(--border-radius);
            padding: 40px;
            margin-bottom: 20px;
        }
        
        .qr-image {
            max-width: 300px;
            margin: 0 auto 20px;
            border: 1px solid #ddd;
            border-radius: var(--border-radius);
            padding: 20px;
            background: white;
        }
        
        .qr-image img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        
        .action-buttons {
            display: flex;
            gap: 15px;
            justify-content: center;
            flex-wrap: wrap;
        }
        
        .btn {
            display: inline-block;
            background: var(--primary);
            color: white;
            padding: 12px 24px;
            text-decoration: none;
            border-radius: var(--border-radius);
            transition: background 0.3s;
            border: none;
            cursor: pointer;
            font-size: 14px;
            font-weight: 500;
        }
        
        .btn:hover {
            background: var(--primary-dark);
        }
        
        .btn-success {
            background: var(--success);
        }
        
        .btn-success:hover {
            background: #218838;
        }
        
        .btn-secondary {
            background: var(--secondary);
        }
        
        .btn-secondary:hover {
            background: #545b62;
        }
        
        .alert {
            padding: 15px;
            border-radius: var(--border-radius);
            margin-bottom: 20px;
            text-align: center;
        }
        
        .alert-error {
            background: #f8d7da;
            color: #721c24;
            border: 1px solid #f5c6cb;
        }
        
        .alert-success {
            background: #d4edda;
            color: #155724;
            border: 1px solid #c3e6cb;
        }
        
        /* 功能区域样式 */
        .features {
            padding: 80px 0;
            background-color: white;
        }
        
        .section-title {
            text-align: center;
            margin-bottom: 50px;
        }
        
        .section-title h2 {
            font-size: 2.5rem;
            margin-bottom: 15px;
        }
        
        .section-title p {
            color: var(--secondary);
            max-width: 600px;
            margin: 0 auto;
        }
        
        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
        }
        
        .feature-card {
            background-color: var(--light);
            border-radius: var(--border-radius);
            padding: 30px;
            text-align: center;
            transition: transform 0.3s;
        }
        
        .feature-card:hover {
            transform: translateY(-5px);
        }
        
        .feature-icon {
            font-size: 2.5rem;
            color: var(--primary);
            margin-bottom: 20px;
        }
        
        .feature-card h3 {
            margin-bottom: 15px;
        }
        
        /* 页脚样式 */
        footer {
            background-color: var(--dark);
            color: white;
            padding: 60px 0 20px;
        }
        
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        
        .footer-column h3 {
            margin-bottom: 20px;
            font-size: 1.2rem;
        }
        
        .footer-links {
            list-style: none;
        }
        
        .footer-links li {
            margin-bottom: 10px;
        }
        
        .footer-links a {
            color: #adb5bd;
            text-decoration: none;
            transition: color 0.3s;
        }
        
        .footer-links a:hover {
            color: white;
        }
        
        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid #343a40;
            color: #adb5bd;
            font-size: 0.9rem;
        }
        
        /* 响应式设计 */
        @media (max-width: 768px) {
            .navbar {
                flex-direction: column;
                padding: 15px 0;
            }
            
            .nav-links {
                margin-top: 20px;
                flex-wrap: wrap;
                justify-content: center;
            }
            
            .nav-links li {
                margin: 5px 10px;
            }
            
            .nav-actions {
                margin-top: 15px;
            }
            
            .hero h1 {
                font-size: 2.2rem;
            }
            
            .input-group {
                flex-direction: column;
            }
            
            .options {
                grid-template-columns: 1fr;
            }
            
            .action-buttons {
                flex-direction: column;
                align-items: center;
            }
            
            .btn {
                width: 100%;
                max-width: 200px;
                text-align: center;
            }
        }