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

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

/* 导航栏样式 */
.navbar {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 1rem 0;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 2rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: white;
    text-decoration: none;
    font-size: 1.5rem;
    font-weight: bold;
}

.logo-icon {
    width: 50px;
    height: 50px;
    background: url(img/logo3.png) ;
    background-size: cover;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #667eea;
    font-weight: bold;
    font-size: 1.2rem;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-menu a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    padding: 0.5rem 1rem;
    border-radius: 5px;
}

.nav-menu a:hover,
.nav-menu a.active {
    background: rgba(255,255,255,0.2);
    transform: translateY(-2px);
}

.mobile-menu-btn {
    display: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
}

/* Banner样式 */
.banner {
    height: 60vh;
   background: url("img/banner.png");
	/*background: linear-gradient(rgba(0,0,0,0.4), rgba(0,0,0,0.4)), url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1200 600"><rect fill="%23f0f2f5" width="1200" height="600"/><polygon fill="%23667eea" points="0,400 300,300 600,350 900,250 1200,300 1200,600 0,600"/><polygon fill="%23764ba2" opacity="0.8" points="0,500 400,400 800,450 1200,380 1200,600 0,600"/></svg>');*/
    background-size: cover;
    background-position: center;
    display: flex;
      align-items: center;
    justify-content: center;
    text-align: center;
    color: white;
    margin-top: 80px;
}
.bannerabout {
    height: 60vh;
   background: url("img/about.png");
	background-size: cover;
    background-position: center;
    display: flex;
      align-items: center;
    justify-content: center;
    text-align: center;
    color: white;
    margin-top: 80px;
}
.bannercase {
    height: 60vh;
   background: url("img/case.png");
	background-size: cover;
    background-position: center;
    display: flex;
      align-items: center;
    justify-content: center;
    text-align: center;
    color: white;
    margin-top: 80px;
}
.bannercontact {
    height: 60vh;
   background: url("img/contact.png");
	background-size: cover;
    background-position: center;
    display: flex;
      align-items: center;
    justify-content: center;
    text-align: center;
    color: white;
    margin-top: 80px;
}

.banner-content h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
}

.banner-content p {
    font-size: 1.2rem;
    max-width: 600px;
    margin: 0 auto;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.5);
}

/* 主要内容样式 */
.main-content {
    min-height: 60vh;
    padding: 4rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 3rem;
    color: #333;
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    margin: 1rem auto;
    border-radius: 2px;
}

/* 首页样式 */
.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.feature-card {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    text-align: center;
    transition: transform 0.3s ease;
}

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

.feature-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    color: white;
    font-size: 1.5rem;
}

/* 关于我们样式 */
.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.about-text {
    font-size: 1.1rem;
    line-height: 1.8;
}

.about-text h3 {
    margin-bottom: 1rem;
    margin-top: 2rem;
    color: #667eea;
}

.about-text h3:first-child {
    margin-top: 0;
}

.about-image {
    height: 400px;
   /* background: linear-gradient(135deg, #667eea, #764ba2);*/
	background: url("img/team3.jpg");
    background-size: cover;
    background-position: center;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.2rem;
}

/* 业务案例样式 */
.cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.case-card {
    background: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

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

.case-image {
    height: 200px;
    background: linear-gradient(45deg, #667eea, #764ba2);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.1rem;
}

.case-content {
    padding: 1.5rem;
}

.case-content h3 {
    margin-bottom: 1rem;
    color: #333;
}

/* 联系我们样式 */
.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
}

.contact-info {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    padding: 2rem;
    border-radius: 10px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.contact-icon {
    width: 40px;
    height: 40px;
    background: rgba(255,255,255,0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.contact-form {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.8rem;
    border: 2px solid #e1e5e9;
    border-radius: 5px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #667eea;
}

.submit-btn {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    padding: 1rem 2rem;
    border: none;
    border-radius: 5px;
    font-size: 1rem;
    cursor: pointer;
    transition: transform 0.3s ease;
}

.submit-btn:hover {
    transform: translateY(-2px);
}

/* 页脚样式 */
.footer {
    background: #2c3e50;
    color: white;
    text-align: center;
    padding: 2rem;
    margin-top: 4rem;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
        flex-direction: column;
        padding: 1rem;
        box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    }

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

    .mobile-menu-btn {
        display: block;
    }

    .banner-content h1 {
        font-size: 2rem;
    }

    .banner-content p {
        font-size: 1rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .about-content,
    .contact-content {
        grid-template-columns: 1fr;
    }

    .features,
    .cases-grid {
        grid-template-columns: 1fr;
    }

    .nav-container {
        padding: 0 1rem;
    }

    .main-content {
        padding: 2rem 1rem;
    }
}

@media (max-width: 480px) {
    .banner-content h1 {
        font-size: 1.5rem;
    }

    .feature-card,
    .case-card {
        margin: 0 0.5rem;
    }
}