/* 基础样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f8f9fa;
}

/* 导航栏样式 */
.navbar {
    background: white;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.logo {
    font-size: 24px;
    font-weight: bold;
    color: #2563eb;
    text-decoration: none;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-link {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s;
    position: relative;
}

.nav-link:hover {
    color: #2563eb;
}

.nav-link.active {
    color: #2563eb;
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 100%;
    height: 2px;
    background: #2563eb;
}

/* 下拉菜单 */
.dropdown {
    position: relative;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: white;
    min-width: 200px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    border-radius: 8px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all 0.3s;
    list-style: none;
}

.dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-link {
    display: block;
    padding: 12px 20px;
    color: #333;
    text-decoration: none;
    border-bottom: 1px solid #f1f5f9;
    transition: background 0.3s;
}

.dropdown-link:hover {
    background: #f8fafc;
    color: #2563eb;
}

.dropdown-link:last-child {
    border-bottom: none;
}

/* 主要内容区域 */
.main-content {
    margin-top: 70px;
    min-height: calc(100vh - 140px);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 20px;
}

/* 页面标题 */
.page-header {
    text-align: center;
    margin-bottom: 50px;
}

.page-title {
    font-size: 2.5rem;
    color: #1e293b;
    margin-bottom: 15px;
}

.page-subtitle {
    font-size: 1.2rem;
    color: #64748b;
}

/* 面包屑导航 */
.breadcrumb {
    background: white;
    padding: 15px 0;
    margin-bottom: 30px;
    border-bottom: 1px solid #e2e8f0;
}

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

.breadcrumb-link {
    color: #64748b;
    text-decoration: none;
}

.breadcrumb-link:hover {
    color: #2563eb;
}

.breadcrumb-separator {
    margin: 0 10px;
    color: #cbd5e1;
}

/* 卡片样式 */
.card {
    background: white;
    border-radius: 12px;
    padding: 30px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    margin-bottom: 30px;
    transition: transform 0.3s, box-shadow 0.3s;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
}

/* 网格布局 */
.grid {
    display: grid;
    gap: 30px;
}

.grid-2 {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 12px 30px;
    background: #2563eb;
    color: white;
    text-decoration: none;
    border-radius: 8px;
    font-weight: 500;
    border: none;
    cursor: pointer;
    transition: background 0.3s;
    text-align: center;
}

.btn:hover {
    background: #1d4ed8;
}

.btn-secondary {
    background: #64748b;
}

.btn-secondary:hover {
    background: #475569;
}

.btn-outline {
    background: transparent;
    border: 2px solid #2563eb;
    color: #2563eb;
}

.btn-outline:hover {
    background: #2563eb;
    color: white;
}

/* 职位卡片 */
.job-card {
    border-left: 4px solid #2563eb;
    padding: 25px;
}

.job-title {
    font-size: 1.3rem;
    color: #1e293b;
    margin-bottom: 10px;
}

.job-meta {
    display: flex;
    gap: 20px;
    margin-bottom: 15px;
    color: #64748b;
    flex-wrap: wrap;
}

.job-tag {
    background: #dbeafe;
    color: #2563eb;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.9rem;
}

/* 服务卡片 */
.service-card {
    text-align: center;
    padding: 40px 20px;
}

.service-icon {
    font-size: 3rem;
    margin-bottom: 20px;
    color: #2563eb;
}

.service-title {
    font-size: 1.3rem;
    margin-bottom: 15px;
    color: #1e293b;
}

/* 表单样式 */
.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: #374151;
}

.form-input, .form-select, .form-textarea {
    width: 100%;
    padding: 12px;
    border: 2px solid #e5e7eb;
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s;
}

.form-input:focus, .form-textarea:focus {
    outline: none;
    border-color: #2563eb;
}

.form-textarea {
    min-height: 120px;
    resize: vertical;
}

/* 页脚 */
.footer {
    background: #1e293b;
    color: white;
    padding: 50px 20px 30px;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 30px;
}

.footer-section h3 {
    margin-bottom: 20px;
    color: #e2e8f0;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 10px;
}

.footer-links a {
    color: #cbd5e1;
    text-decoration: none;
    transition: color 0.3s;
}

.footer-links a:hover {
    color: white;
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid #374151;
    color: #94a3b8;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-menu {
        gap: 15px;
    }
    
    .container {
        padding: 20px 15px;
    }
    
    .page-title {
        font-size: 2rem;
    }
    
    .job-meta {
        flex-direction: column;
        gap: 8px;
    }
    
    .dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        background: transparent;
    }
}