body, html {
            margin: 0;
            padding: 0;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            color: #333; /* 文字深灰色 */
            line-height: 1.6;
            scroll-behavior: smooth; /* 平滑滚动 */
            background-color: #f9f9f9; /* 背景浅灰色 */
        }

        /* 导航栏 */
        .navbar {
            background-color: #fff;/* 背景白色 */
            padding: 15px 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            position: fixed;
            top: 0;
            width: 100%;
            z-index: 1000;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1); /* 阴影 */
        }

        .navbar .logo {
            font-size: 24px;
            font-weight: bold;
            color: #00bcd4; 
        }

        .navbar .nav-links {
            display: flex;
            gap: 20px;
            align-items: center;
        }

        .navbar .nav-links a {
            color: #333; /* 文字深灰色 */
            text-decoration: none;
            font-size: 18px;
            transition: color 0.3s ease;
        }

        .navbar .nav-links a:hover {
            color: #00bcd4; /* 悬停变色 */
        }

        /* 菜单 */
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            margin-right: 20px;
        }

        .hamburger .line {
            width: 25px;
            height: 3px;
            background-color: #333; /* 线条深灰色 */
            transition: transform 0.3s ease, opacity 0.3s ease;
        }

        .hamburger.active .line:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }

        .hamburger.active .line:nth-child(2) {
            opacity: 0;
        }

        .hamburger.active .line:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        /* 欢迎部分 */
        .welcome-section {
            text-align: center;
            padding: 200px 20px;
            background-color: #fff; /* 背景白色 */
            margin-top: 60px;
        }

        .welcome-section h1 {
            font-size: 60px;
            margin-bottom: 20px;
            color: #333; /* 文字深灰色 */
            animation: fadeIn 2s ease-in-out;
        }

        .welcome-section p {
            font-size: 24px;
            color: #666; /* 文字灰色 */
            animation: fadeIn 3s ease-in-out;
        }

        @keyframes fadeIn {
            from { opacity: 0; }
            to { opacity: 1; }
        }

        /* 关于部分 */
        .about-section {
            padding: 80px 20px;
            background-color: #fff; /* 背景白色 */
            text-align: center;
        }

        .about-section h2 {
            font-size: 36px;
            margin-bottom: 20px;
            color: #00bcd4; 
        }

        .about-section p {
            font-size: 18px;
            color: #666; /* 文字灰色 */
            max-width: 800px;
            margin: 0 auto;
        }

        /* 旗下网站+部分作品 */
        .websites-section {
            padding: 80px 20px;
            background-color: #f9f9f9; /* 背景浅灰色 */
            text-align: center;
        }

        .websites-section h2 {
            font-size: 36px;
            margin-bottom: 40px;
            color: #00bcd4; 
        }

        .website-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 20px;
            max-width: 1200px;
            margin: 0 auto;
        }

        .website-card {
            background-color: #fff; /* 背景白色 */
            padding: 20px;
            border-radius: 10px;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1); /* 添加阴影 */
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }

        .website-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2); /* 悬停阴影加深 */
        }

        .website-card img {
            width: 100%;
            border-radius: 10px;
            margin-bottom: 15px;
        }

        .website-card h3 {
            font-size: 24px;
            margin-bottom: 10px;
            color: #333; /* 文字深灰色 */
        }

        .website-card p {
            font-size: 16px;
            color: #666; /* 文字灰色 */
        }

        .website-card a {
            display: inline-block;
            padding: 10px 20px;
            background-color: #00bcd4; 
            color: #fff;
            text-decoration: none;
            border-radius: 5px;
            transition: background-color 0.3s ease;
        }

        .website-card a:hover {
            background-color: #0097a7; /* 悬停颜色加深 */
        }

        /* 联系部分 */
        .contact-section {
            padding: 80px 20px;
            background-color: #fff; /* 背景白色 */
            text-align: center;
        }

        .contact-section h2 {
            font-size: 36px;
            margin-bottom: 20px;
            color: #00bcd4; 
        }

        .contact-section p {
            font-size: 18px;
            color: #666; /* 文字灰色 */
            max-width: 800px;
            margin: 0 auto 20px;
        }

        .contact-info {
            display: flex;
            justify-content: center;
            gap: 30px;
            margin-bottom: 40px;
        }

        .contact-info div {
            text-align: left;
        }

        .contact-info i {
            font-size: 24px;
            color: #00bcd4; 
            margin-right: 10px;
        }

        .contact-info a {
            color: #333; /* 文字深灰色 */
            text-decoration: none;
            transition: color 0.3s ease;
        }

        .contact-info a:hover {
            color: #00bcd4; /* 悬停时变色 */
        }

        .contact-form {
            max-width: 600px;
            margin: 0 auto;
            text-align: left;
        }

        .contact-form input,
        .contact-form textarea {
            width: 100%;
            padding: 10px;
            margin-bottom: 20px;
            border: 1px solid #ddd;
            border-radius: 5px;
            font-size: 16px;
            transition: border-color 0.3s ease;
        }

        .contact-form input:focus,
        .contact-form textarea:focus {
            border-color: #00bcd4; 
            outline: none;
        }

        .contact-form button {
            padding: 10px 20px;
            background-color: #00bcd4; 
            color: #fff;
            border: none;
            border-radius: 5px;
            font-size: 16px;
            cursor: pointer;
            transition: background-color 0.3s ease, transform 0.3s ease;
        }

        .contact-form button:hover {
            background-color: #0097a7; /* 悬停颜色变深 */
            transform: scale(1.05);
        }
       /* 发送邮件按钮样式 */
        .contact-section .email-button {
            display: inline-block;
            margin: 20px auto;
            padding: 12px 24px;
            background-color: #00bcd4; /* 主色调 */
            color: white;
            text-decoration: none;
            border-radius: 5px;
            font-size: 16px;
            transition: all 0.3s ease;
        }

        /* 按钮悬停效果 */
        .contact-section .email-button:hover {
            background-color: #0097a7;
            transform: scale(1.05);
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
        }
        
        /* 邮件按钮居中显示样式 */
        .contact-section .email-link {
            display: inline-block;
            margin: 20px auto;
            padding: 10px 20px;
            background-color: #00bcd4;
            color: #fff;
            text-decoration: none;
            border-radius: 5px;
            transition: background-color 0.3s ease, transform 0.3s ease;
        }

        /* 回到顶部按钮 */
        .back-to-top {
            position: fixed;
            bottom: 20px;
            right: 20px;
            background-color: #00bcd4; 
            color: #fff;
            padding: 10px 15px;
            border-radius: 50%;
            text-decoration: none;
            display: none;
            transition: background-color 0.3s ease, transform 0.3s ease;
        }

        .back-to-top:hover {
            background-color: #0097a7; /* 悬停颜色变深 */
            transform: scale(1.1);
        }

        /* 页脚样式 */
        footer {
            padding: 20px;
            background-color: #fff; /* 背景白色 */
            text-align: center;
            font-size: 14px;
            color: #666; /* 文字颜色灰色 */
            box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.1); /* 添加阴影 */
        }

        footer a {
            color: #00bcd4; 
            text-decoration: none;
        }

        footer a:hover {
            text-decoration: underline;
        }

        /* 响应式 */
        @media (max-width: 768px) {
            .navbar .nav-links {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 60px;
                left: 20px; /* 从左侧滑出 */
                background-color: #fff; /* 背景白色 */
                padding: 10px;
                border-radius: 5px;
                width: 200px;
                box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1); /* 添加阴影 */
            }

            .navbar .nav-links.active {
                display: flex;
            }

            .hamburger {
                display: flex;
            }

            .contact-info {
                flex-direction: column;
                align-items: center;
            }
        }