:root {
            --primary-color: #4a6fa5;
            --secondary-color: #6b8e23;
            --accent-color: #ff6b6b;
            --background-color: #f8f9fa;
            --text-color: #333;
            --light-gray: #e9ecef;
            --dark-gray: #495057;
            --white: #fff;
            --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
        }


        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: 'Noto Sans SC', sans-serif;
            line-height: 1.6;
            color: var(--text-color);
            background-color: var(--background-color);
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* 导航栏 */
        header {
            background-color: var(--white);
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 100;
        }

        nav {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 0;
        }

        .logo {
            font-size: 24px;
            font-weight: 500;
            color: var(--primary-color);
            text-decoration: none;
        }

        .nav-links {
            display: flex;
            gap: 30px;
        }

        .nav-links a {
            color: var(--text-color);
            text-decoration: none;
            font-weight: 500;
            transition: color 0.3s;
        }

        .nav-links a:hover {
            color: var(--primary-color);
        }

        .auth-btn {
            background-color: var(--primary-color);
            color: var(--white);
            border: none;
            padding: 8px 16px;
            border-radius: 4px;
            cursor: pointer;
            transition: background-color 0.3s;
        }

        .auth-btn:hover {
            background-color: #3a5a85;
        }

        /* 英雄区域 */
        .hero {
            background: linear-gradient(135deg, var(--primary-color), #2a4365);
            color: var(--white);
            padding: 100px 0;
        }

        .hero .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 50px;
        }

        .hero-content {
            flex: 1;
        }

        .hero h1 {
            font-size: 42px;
            margin-bottom: 20px;
        }

        .hero p {
            font-size: 18px;
            margin-bottom: 30px;
        }

        .hero-image {
            flex: 1;
            min-height: 300px;
            background-color: rgba(255, 255, 255, 0.1);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .hero-image::after {
            content: '木纹大师';
            font-size: 60px;
            font-weight: bold;
            opacity: 0.3;
        }

        .hero-search-link {
            flex: 1;
            min-height: 300px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-decoration: none;
        }

        .hero-search-button {
            background-color: rgba(255, 255, 255, 0.1);
            border: 2px solid rgba(255, 255, 255, 0.3);
            border-radius: 8px;
            padding: 20px 40px;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            transition: all 0.3s;
            cursor: pointer;
            width: 100%;
            max-width: 300px;
        }

        .hero-search-button:hover {
            background-color: rgba(255, 255, 255, 0.2);
            transform: translateY(-5px);
        }

        .search-icon {
            font-size: 48px;
            color: var(--white);
            margin-bottom: 15px;
        }

        .search-text {
            font-size: 20px;
            color: var(--white);
            font-weight: 500;
            text-align: center;
        }

        @media (max-width: 992px) {
            .hero .container {
                flex-direction: column;
                text-align: center;
            }

            .hero-image {
                width: 100%;
                margin-top: 30px;
            }
        }

        .cta-btn {
            background-color: var(--accent-color);
            color: var(--white);
            border: none;
            padding: 12px 24px;
            border-radius: 4px;
            font-size: 16px;
            font-weight: 500;
            cursor: pointer;
            transition: background-color 0.3s;
        }

        .cta-btn:hover {
            background-color: #ff5252;
        }

        .add-feature-btn {
            background-color: var(--primary-color);
            color: var(--white);
            border: none;
            padding: 12px 24px;
            border-radius: 4px;
            font-size: 16px;
            font-weight: 500;
            cursor: pointer;
            transition: background-color 0.3s;
            margin-left: 15px;
        }

        .add-feature-btn:hover {
            background-color: #3a5a85;
        }

        @media (max-width: 768px) {
            .add-feature-btn {
                margin-left: 0;
                margin-top: 15px;
            }
        }

        /* 特点区域 */
        .features {
            padding: 80px 0;
            background-color: var(--white);
        }

        .features h2 {
            text-align: center;
            font-size: 32px;
            margin-bottom: 50px;
            color: var(--primary-color);
        }

        .feature-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
        }

        .feature-card {
            background-color: var(--background-color);
            padding: 30px;
            border-radius: 8px;
            box-shadow: var(--shadow);
            transition: transform 0.3s;
        }

        .feature-card.featured {
            border: 2px solid var(--accent-color);
            background-color: rgba(255, 107, 107, 0.05);
        }

        .feature-tag {
            display: inline-block;
            background-color: var(--accent-color);
            color: white;
            font-size: 12px;
            padding: 3px 8px;
            border-radius: 4px;
            margin-left: 8px;
            vertical-align: middle;
        }

        .feature-card:hover {
            transform: translateY(-5px);
        }

        .feature-card h3 {
            font-size: 20px;
            margin-bottom: 15px;
            color: var(--secondary-color);
        }

        /* 工具区域 */
        .tools {
            padding: 80px 0;
            background-color: var(--background-color);
        }

        .tools h2 {
            text-align: center;
            font-size: 32px;
            margin-bottom: 50px;
            color: var(--primary-color);
        }

        .tool-group {
            background-color: var(--white);
            border-radius: 8px;
            box-shadow: var(--shadow);
            margin-bottom: 30px;
            overflow: hidden;
        }

        .tool-group-header {
            background-color: var(--primary-color);
            color: var(--white);
            padding: 15px 20px;
            font-size: 18px;
            font-weight: 500;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .tool-group-content {
            padding: 20px;
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 15px;
        }

        .tool-item {
            background-color: var(--light-gray);
            border: none;
            border-radius: 4px;
            padding: 12px 15px;
            text-align: left;
            cursor: pointer;
            transition: all 0.3s;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .tool-item:hover {
            background-color: #d4d9df;
            transform: translateY(-2px);
        }

        .tool-icon {
            font-size: 18px;
        }

        /* 授权区域 */
        .auth-info {
            padding: 80px 0;
            background-color: var(--white);
            text-align: center;
        }

        .auth-info h2 {
            font-size: 32px;
            margin-bottom: 30px;
            color: var(--primary-color);
        }

        .auth-plans {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
            max-width: 900px;
            margin: 0 auto;
        }

        .auth-plan {
            background-color: var(--white);
            border-radius: 8px;
            box-shadow: var(--shadow);
            padding: 30px;
            transition: transform 0.3s;
        }

        .auth-plan:hover {
            transform: translateY(-5px);
        }

        .free-plan {
            border-top: 5px solid var(--secondary-color);
        }

        .vip-plan {
            border-top: 5px solid var(--accent-color);
        }

        .auth-plan h3 {
            font-size: 24px;
            margin-bottom: 20px;
            color: var(--dark-gray);
        }

        .plan-price {
            font-size: 36px;
            font-weight: 700;
            margin-bottom: 20px;
            color: var(--primary-color);
        }

        .period {
            font-size: 16px;
            font-weight: 400;
            color: var(--dark-gray);
        }

        .plan-features {
            list-style-type: none;
            margin-bottom: 30px;
            text-align: left;
        }

        .plan-features li {
            margin-bottom: 10px;
            padding-left: 25px;
            position: relative;
        }

        .plan-features li:before {
            content: '✓';
            position: absolute;
            left: 0;
            color: var(--secondary-color);
            font-weight: bold;
        }

        .plan-btn {
            background-color: var(--primary-color);
            color: var(--white);
            border: none;
            padding: 12px 24px;
            border-radius: 4px;
            font-size: 16px;
            font-weight: 500;
            cursor: pointer;
            transition: background-color 0.3s;
            width: 100%;
        }

        .plan-btn:hover {
            background-color: #3a5a85;
        }

        .vip-plan .plan-btn {
            background-color: var(--accent-color);
        }

        .vip-plan .plan-btn:hover {
            background-color: #ff5252;
        }

        /* 联系区域 */
        .contact {
            padding: 80px 0;
            background-color: var(--background-color);
            text-align: center;
        }

        .contact h2 {
            font-size: 32px;
            margin-bottom: 30px;
            color: var(--primary-color);
        }

        .contact-info {
            font-size: 18px;
            margin-bottom: 20px;
        }

        /* 页脚 */
        footer {
            background-color: var(--dark-gray);
            color: var(--white);
            padding: 30px 0;
            text-align: center;
        }

        /* 模态框样式 */
        .modal {
            display: none; /* 默认隐藏 */
            position: fixed; /* 固定定位 */
            z-index: 1000; /* 置于顶层 */
            left: 0;
            top: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0, 0, 0, 0.5); /* 半透明背景 */
            overflow: auto; /* 允许滚动 */
        }

        .modal-content {
            background-color: var(--white);
            margin: 10% auto;
            padding: 30px;
            border-radius: 8px;
            box-shadow: var(--shadow);
            width: 80%;
            max-width: 600px;
            position: relative;
        }

        .window-control {
            position: relative;
            font-size: 28px;
            font-weight: bold;
            color: var(--dark-gray);
            cursor: pointer;
            transition: color 0.3s;
            padding: 0 10px;
            line-height: 1;
            user-select: none;
        }

        .window-control:hover {
            color: var(--primary-color);
        }
        
        .maximize-button:hover {
            background-color: #3a5a85 !important;
        }

        .modal-content h2 {
            color: var(--primary-color);
            margin-bottom: 20px;
            text-align: center;
        }

        .search-form {
            display: flex;
            gap: 10px;
            margin-bottom: 20px;
        }

        .search-form input {
            flex: 1;
            padding: 12px 15px;
            border: 1px solid var(--light-gray);
            border-radius: 4px;
            font-size: 16px;
        }

        .search-btn {
            background-color: var(--primary-color);
            color: var(--white);
            border: none;
            padding: 12px 24px;
            border-radius: 4px;
            font-size: 16px;
            font-weight: 500;
            cursor: pointer;
            transition: background-color 0.3s;
        }

        .search-btn:hover {
            background-color: #3a5a85;
        }

        .search-iframe-container {
            width: 100%;
            height: 500px;
            overflow: hidden;
            border-radius: 4px;
            margin-top: 20px;
        }

        .search-iframe {
            width: 100%;
            height: 100%;
            border: none;
        }

        /* 添加新功能表单样式 */
        .feature-form {
            margin-top: 20px;
        }

        .form-group {
            margin-bottom: 20px;
        }

        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 500;
            color: #4a6fa5;
        }

        .form-group input,
        .form-group textarea {
            width: 100%;
            padding: 12px;
            border: 1px solid #e9ecef;
            border-radius: 4px;
            font-size: 16px;
            box-sizing: border-box;
        }

        .form-group textarea {
            resize: vertical;
        }

        .submit-btn {
            background-color: #4a6fa5;
            color: white;
            border: none;
            padding: 12px 24px;
            border-radius: 4px;
            font-size: 16px;
            font-weight: 500;
            cursor: pointer;
            transition: background-color 0.3s;
            width: 100%;
        }

        .submit-btn:hover {
            background-color: #3a5a85;
        }

        /* 登录/注册模态框样式 */
        .modal-tabs {
            display: flex;
            border-bottom: 1px solid var(--light-gray);
            margin-bottom: 20px;
        }
        
        .tab-btn {
            background: none;
            border: none;
            padding: 12px 24px;
            cursor: pointer;
            font-size: 16px;
            color: var(--dark-gray);
            position: relative;
            transition: color 0.3s;
        }
        
        .tab-btn:hover {
            color: var(--primary-color);
        }
        
        .tab-btn.active {
            color: var(--primary-color);
            font-weight: 500;
        }
        
        .tab-btn.active::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 0;
            width: 100%;
            height: 3px;
            background-color: var(--primary-color);
        }
        
        .tab-content {
            display: none;
        }
        
        .tab-content.active {
            display: block;
        }
        
        .message {
            margin-top: 15px;
            padding: 12px;
            border-radius: 4px;
            text-align: center;
        }
        
        .message.success {
            background-color: rgba(76, 175, 80, 0.1);
            color: #4caf50;
            border: 1px solid #c8e6c9;
        }
        
        .message.error {
            background-color: rgba(244, 67, 54, 0.1);
            color: #f44336;
            border: 1px solid #ffcdd2;
        }
        
        /* 用户头像和菜单样式 */
        .user-menu {
            position: relative;
        }
        
        .user-avatar-link {
            display: flex;
            align-items: center;
            padding: 8px 12px;
            border-radius: 25px;
            transition: all 0.3s ease;
            text-decoration: none;
            color: #333;
            background-color: #f8f9fa;
            border: 2px solid transparent;
        }
        
        .user-avatar-link:hover {
            background-color: #e9ecef;
            border-color: #4a6fa5;
            transform: translateY(-1px);
            box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
        }
        
        .user-avatar {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background-color: var(--primary-color);
            color: white;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 500;
            font-size: 14px;
        }
        
        .user-text {
            margin-left: 8px;
            font-size: 14px;
            font-weight: 500;
        }
        
        @media (max-width: 768px) {
            .user-text {
                display: none;
            }
        }

        /* 响应式设计 */
        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }
            
            .modal-content {
                width: 95%;
                margin: 20% auto;
            }

            .search-form {
                flex-direction: column;
            }

            .hero h1 {
                font-size: 32px;
            }

            .hero p {
                font-size: 16px;
            }

            .features h2,
            .tools h2,
            .auth-info h2,
            .contact h2 {
                font-size: 28px;
            }
        }