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

body {
    font-family: 'Microsoft YaHei', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
}

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

/* 导航栏样式 */
.navbar {
    background: linear-gradient(90deg, #1e3c72 0%, #2a5298 100%);
    padding: 15px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    border-radius: 10px;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    color: white;
    font-size: 1.5em;
    font-weight: bold;
}

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

.nav-item {
    margin-left: 20px;
}

.nav-link {
    color: white;
    text-decoration: none;
    padding: 10px 15px;
    border-radius: 5px;
    transition: background-color 0.3s ease;
}

.nav-link:hover {
    background-color: rgba(255,255,255,0.2);
}

.hamburger {
    display: none;
    cursor: pointer;
    background: none;
    border: none;
    color: white;
    font-size: 1.5em;
    padding: 5px;
}

/* 移动端菜单样式 */
@media (max-width: 768px) {
    .nav-container {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .nav-menu {
        display: none;
        flex-direction: column;
        width: 100%;
        background: linear-gradient(90deg, #1e3c72 0%, #2a5298 100%);
        position: absolute;
        top: 60px;
        left: 0;
        right: 0;
        padding: 10px 20px;
        border-radius: 0 0 10px 10px;
        box-shadow: 0 4px 10px rgba(0,0,0,0.2);
        z-index: 999;
    }
    
    .nav-menu.active {
        display: flex;
    }
    
    .nav-item {
        margin: 5px 0;
        margin-left: 0;
        width: 100%;
    }
    
    .nav-link {
        display: block;
        width: 100%;
        padding: 12px;
        margin: 2px 0;
    }
    
    .hamburger {
        display: block;
        position: absolute;
        right: 20px;
        top: 15px;
    }
    
    /* 关闭按钮样式 */
    .close-btn {
        display: block;
        position: absolute;
        right: 15px;
        top: 15px;
        background: none;
        border: none;
        color: white;
        font-size: 1.5em;
        cursor: pointer;
        z-index: 1001;
    }
}

/* 头部样式 */
header {
    background: linear-gradient(90deg, #1e3c72 0%, #2a5298 100%);
    color: white;
    padding: 30px 0;
    text-align: center;
    border-radius: 10px;
    margin-bottom: 30px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

h1 {
    font-size: 2.5em;
    margin-bottom: 10px;
}

.subtitle {
    font-size: 1.2em;
    opacity: 0.9;
}

.contact-bar {
    background: #fff;
    padding: 15px;
    border-radius: 8px;
    margin-bottom: 20px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
}

.contact-item {
    display: flex;
    align-items: center;
    margin: 5px 15px;
}

.contact-item strong {
    margin-right: 8px;
    color: #1e3c72;
}

.main-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
}

.section {
    background: white;
    padding: 25px;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
    margin-bottom: 20px;
}

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

.section h2 {
    color: #1e3c72;
    border-bottom: 3px solid #2a5298;
    padding-bottom: 10px;
    margin-bottom: 20px;
    font-size: 1.8em;
}

.section h3 {
    color: #2a5298;
    margin: 15px 0 10px 0;
    font-size: 1.3em;
}

.certificate-item {
    background: #f8f9fa;
    padding: 15px;
    margin: 10px 0;
    border-radius: 8px;
    border-left: 4px solid #2a5298;
}

.item-title {
    font-weight: bold;
    color: #1e3c72;
    margin-bottom: 8px;
}

.item-details {
    margin: 8px 0;
    line-height: 1.5;
}

.highlight {
    background: linear-gradient(120deg, #a8edea 0%, #fed6e3 100%);
    border: 2px solid #2a5298;
}

.contact-info {
    background: linear-gradient(90deg, #ffecd2 0%, #fcb69f 100%);
    padding: 20px;
    border-radius: 10px;
    text-align: center;
    margin-top: 20px;
}

.contact-info h3 {
    color: #d63384;
    margin-bottom: 15px;
}

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

.feature-card {
    background: white;
    padding: 20px;
    border-radius: 8px;
    text-align: center;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.feature-card h4 {
    color: #1e3c72;
    margin-bottom: 10px;
}

footer {
    text-align: center;
    padding: 20px;
    margin-top: 30px;
    color: #666;
    font-size: 0.9em;
    background: white;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.phone-number {
    font-size: 1.2em;
    font-weight: bold;
    color: #d63384;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .container {
        padding: 10px;
    }
    
    h1 {
        font-size: 2em;
    }
    
    .section {
        padding: 15px;
    }
    
    .contact-bar {
        flex-direction: column;
        align-items: center;
    }
    
    .contact-item {
        justify-content: center;
        width: 100%;
        margin: 8px 0;
    }
}