.section_faq {
  width: 100%;
  max-width: 1000px;
  margin: 60px auto 0;
  padding: 0;
  box-sizing: border-box;
}

.faq_list {
  border-top: 1px solid #ddd;
}

.faq_item {
  border-bottom: 1px solid #ddd;
}

.faq_item summary {
  position: relative;
  cursor: pointer;
  padding: 18px 48px 18px 48px;
  font-size: 17px;
  font-weight: bold;
  line-height: 1.7;
  color: #333;
  list-style: none;
}

.faq_item summary::-webkit-details-marker {
  display: none;
}

.faq_item summary::before {
  content: "Q";
  position: absolute;
  left: 10px;
  top: 18px;
  width: 26px;
  height: 26px;
  background: #005bac;
  color: #fff;
  border-radius: 50%;
  text-align: center;
  line-height: 26px;
  font-size: 15px;
  font-weight: bold;
}

.faq_item summary::after {
  content: "＋";
  position: absolute;
  right: 16px;
  top: 18px;
  font-size: 22px;
  color: #005bac;
}

.faq_item[open] summary::after {
  content: "－";
}

.faq_answer {
  padding: 0 20px 22px 48px;
  color: #444;
  font-size: 16px;
  line-height: 1.9;
}

.faq_answer p {
  margin: 0;
}

@media screen and (max-width: 740px) {
  .section_faq {
    margin-top: 40px;
  }

  .faq_item summary {
    padding: 16px 44px 16px 44px;
    font-size: 16px;
  }

  .faq_item summary::before {
    top: 16px;
  }

  .faq_item summary::after {
    top: 16px;
  }

  .faq_answer {
    padding: 0 15px 20px 44px;
    font-size: 15px;
  }
}