.page-header {
    background: #f8f9fa;
    padding: 100px 0 60px;
    text-align: center;
    margin-bottom: 50px;
}

.page-header h1 {
    font-size: 2.5em;
    color: #333;
    margin-bottom: 15px;
}

.page-header p {
    font-size: 1.2em;
    color: #666;
}

.position-categories {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.category {
    padding: 10px 25px;
    border-radius: 20px;
    cursor: pointer;
    transition: all 0.3s ease;
    background: #e9ecef;
    color: #666;
    user-select: none;
    min-width: 100px;
    text-align: center;
}

.category.active {
    background: #007bff;
    color: white;
}

.category:hover {
    background: #007bff;
    color: white;
}

.positions-section {
    padding: 0 20px 60px;
}

.positions-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    padding: 0 20px;
}

.position-card {
    background: white;
    border: 1px solid #eee;
    border-radius: 8px;
    padding: 20px;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.position-card:hover {
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.position-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 1px solid #eee;
}

.position-title {
    display: flex;
    align-items: center;
    gap: 15px;
}

.position-title h2 {
    font-size: 1.4em;
    color: #333;
    margin: 0;
}

.position-type {
    background: #e6f3ff;
    color: #007bff;
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.9em;
}

.position-content {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.position-description {
    order: 1;
    color: #666;
    line-height: 1.6;
}

.position-description h3 {
    color: #333;
    margin: 25px 0 15px;
    font-size: 1.2em;
    font-weight: 500;
}

.position-description h3:first-child {
    margin-top: 0;
}

.position-description ul {
    list-style: none;
    padding: 0;
    margin: 0 0 20px 0;
}

.position-description li {
    position: relative;
    padding-left: 15px;
    margin-bottom: 8px;
}

.position-description li:before {
    content: "•";
    position: absolute;
    left: 0;
    color: #007bff;
}

.position-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 15px;
}

.position-tags span {
    background: #f8f9fa;
    padding: 6px 12px;
    border-radius: 15px;
    font-size: 0.9em;
    color: #666;
    border: 1px solid #eee;
}

.position-info {
    order: 2;
    border-top: 1px solid #eee;
    padding-top: 20px;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.position-info span {
    display: flex;
    align-items: center;
    gap: 8px;
    color: #666;
}

.position-info i {
    color: #007bff;
    width: 16px;
}

.apply-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: #007bff;
    color: white;
    padding: 12px 25px;
    border-radius: 25px;
    text-decoration: none;
    transition: all 0.3s ease;
    margin-top: 20px;
}

.apply-btn:hover {
    background: #0056b3;
    transform: translateY(-2px);
}

/* 响应式布局 */
@media (max-width: 1024px) {
    .positions-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .positions-grid {
        grid-template-columns: 1fr;
    }

    .position-content {
        grid-template-columns: 1fr;
    }

    .position-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }

    .position-salary {
        margin-top: 10px;
    }

    .position-categories {
        gap: 10px;
    }
    
    .category {
        padding: 8px 20px;
        font-size: 0.9em;
    }
}