/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Microsoft YaHei', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f5f5;
}

/* 容器 */
.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px 0;
}

/* 导航栏 */
.navbar {
    background-color: #2c3e50;
    color: #fff;
    padding: 15px 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 20px;
}

.logo {
    font-size: 1.8rem;
    font-weight: bold;
}

.nav-links {
    display: flex;
    list-style: none;
}

.nav-links li {
    margin-left: 20px;
}

.nav-links a {
    color: #fff;
    text-decoration: none;
    font-size: 1.1rem;
    transition: color 0.3s ease;
}

.nav-links a:hover {
    color: #f39c12;
}

.mobile-menu {
    display: none;
    cursor: pointer;
}

.mobile-menu span {
    display: block;
    width: 25px;
    height: 3px;
    background-color: #fff;
    margin: 5px 0;
    transition: all 0.3s ease;
}

/* 首页横幅 */
.hero {
    background: linear-gradient(rgba(0,0,0,0.7), rgba(0,0,0,0.7)), url('https://trae-api-cn.mchost.guru/api/ide/v1/text_to_image?prompt=traditional%20chinese%20culture%20background%20with%20yin%20yang%20symbol%20and%20chinese%20characters&image_size=landscape_16_9');
    background-size: cover;
    background-position: center;
    color: #fff;
    text-align: center;
    padding: 150px 0;
    margin-top: 70px;
}

.hero h2 {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 30px;
}

/* 按钮 */
.btn {
    display: inline-block;
    padding: 12px 24px;
    background-color: #f39c12;
    color: #fff;
    text-decoration: none;
    border-radius: 5px;
    font-size: 1.1rem;
    transition: background-color 0.3s ease;
}

.btn:hover {
    background-color: #e67e22;
}

/* 公司信息 */
.about {
    background-color: #fff;
    padding: 80px 0;
}

.about h2 {
    text-align: center;
    font-size: 2.2rem;
    margin-bottom: 40px;
    color: #2c3e50;
}

.about-content {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.about-info {
    text-align: center;
    max-width: 800px;
}

.about-info h3 {
    font-size: 1.8rem;
    margin-bottom: 20px;
    color: #2c3e50;
}

.about-info p {
    font-size: 1.1rem;
    margin-bottom: 15px;
    line-height: 1.8;
}

/* 产品服务 */
.services {
    background-color: #f9f9f9;
    padding: 80px 0;
}

.services h2 {
    text-align: center;
    font-size: 2.2rem;
    margin-bottom: 40px;
    color: #2c3e50;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.service-card {
    background-color: #fff;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.15);
}

.service-card h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: #2c3e50;
}

.service-card p {
    font-size: 1rem;
    margin-bottom: 20px;
    line-height: 1.6;
}

.service-card .price {
    font-size: 1.2rem;
    font-weight: bold;
    color: #e67e22;
    margin-bottom: 20px;
}

.service-btn {
    background-color: #2c3e50;
}

.service-btn:hover {
    background-color: #34495e;
}

/* 联系我们 */
.contact {
    background-color: #fff;
    padding: 80px 0;
}

.contact h2 {
    text-align: center;
    font-size: 2.2rem;
    margin-bottom: 40px;
    color: #2c3e50;
}

.contact-content {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
}

.contact-info {
    flex: 1;
    min-width: 300px;
    margin-bottom: 30px;
}

.contact-info h3 {
    font-size: 1.5rem;
    margin-bottom: 20px;
    color: #2c3e50;
}

.contact-info p {
    font-size: 1.1rem;
    margin-bottom: 15px;
}

.contact-form {
    flex: 1;
    min-width: 300px;
}

.contact-form h3 {
    font-size: 1.5rem;
    margin-bottom: 20px;
    color: #2c3e50;
}

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

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-size: 1.1rem;
    color: #2c3e50;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 1rem;
    font-family: 'Microsoft YaHei', Arial, sans-serif;
}

.form-group textarea {
    resize: vertical;
}

/* 页脚 */
.footer {
    background-color: #2c3e50;
    color: #fff;
    text-align: center;
    padding: 30px 0;
}

.footer p {
    font-size: 1rem;
}

/* 服务详情模态框 */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0,0,0,0.7);
}

.modal-content {
    background-color: #fff;
    margin: 15% auto;
    padding: 30px;
    border-radius: 10px;
    width: 80%;
    max-width: 600px;
    text-align: center;
}

.close {
    color: #aaa;
    float: right;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
}

.close:hover {
    color: #000;
}

.modal h3 {
    font-size: 1.8rem;
    margin-bottom: 20px;
    color: #2c3e50;
}

.modal p {
    font-size: 1.1rem;
    margin-bottom: 15px;
    line-height: 1.6;
    text-align: left;
}

.modal-btn {
    margin-top: 20px;
    background-color: #2c3e50;
}

.modal-btn:hover {
    background-color: #34495e;
}

/* 响应式设计 */
@media screen and (max-width: 768px) {
    .nav-links {
        position: absolute;
        top: 70px;
        left: 0;
        width: 100%;
        background-color: #2c3e50;
        flex-direction: column;
        align-items: center;
        padding: 20px 0;
        display: none;
    }

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

    .nav-links li {
        margin: 10px 0;
    }

    .mobile-menu {
        display: block;
    }

    .hero h2 {
        font-size: 2rem;
    }

    .hero p {
        font-size: 1rem;
    }

    .about h2,
    .services h2,
    .contact h2 {
        font-size: 1.8rem;
    }

    .services-grid {
        grid-template-columns: 1fr;
    }

    .contact-content {
        flex-direction: column;
    }

    .contact-info,
    .contact-form {
        width: 100%;
    }
}

@media screen and (max-width: 480px) {
    .hero {
        padding: 100px 0;
    }

    .hero h2 {
        font-size: 1.8rem;
    }

    .logo {
        font-size: 1.5rem;
    }

    .modal-content {
        width: 90%;
        margin: 20% auto;
    }
}