/* 解答ページ */

.section-answer {
  width: 100vw;
}

.answer_back {
  position: fixed;
  width: 100vw;
  height: 100vh;
}

.answer_back img {
  width: 100%;
}

@media (max-width: 600px) {
  .answer_back {
    position: fixed;
    margin: auto;
    top: 0;
    bottom: 0;
    right: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
  }

  .answer_back img {
    width: auto;
    min-width: 100vw;
    height: 100%;
  }
}

.answerHeading {
  position: relative;
  width: 90%;
  max-width: 350px;
  margin: 0 auto;
  padding: 15px 0;
}

.answerHeading img {
  width: 100%;
}

.answerHeading p {
  display: block;
  width: fit-content;
  margin: 10px auto;
  padding: 2px 15px;
  background: #000;
  color: #fff;
  border: #fff 2px solid;
  border-radius: 100vh;
}

.answerInner {
  position: relative;
  width: 90%;
  margin: 0 auto 40px;
  max-width: 365px;
}

.answerInner .label3 {
  margin: 0 auto;
  width: 100%;
  max-width: 500px;
}

.answerBox {
  margin: 15px auto 40px;
  padding: 5px 10px 20px;
  background-color: #fff;
  border-radius: 12px;
}
.answerBox .kaitou {
  padding-bottom: 20px;
}
.answerBox p {
  margin-bottom: 12px;
}

.answer_body .box1 {
  box-sizing: border-box;
  margin: 15px auto;
  width: 100%;
  max-width: 750px;
}

.answer_body .box1 .btn1 {
  box-sizing: border-box;
  margin: 0 auto;
  width: 90%;
  max-width: 750px;
}

.answerTitle {
  margin: 0 auto;
  text-align: center;
  font-size: 28px;
  line-height: 2;
}

.answerTitle_1 {
  color: #0093dc;
  border-bottom: none;
}

.answerTitle_2 {
  color: #00a73c;
  border-bottom: none;
}

.answerTitle_3 {
  color: #e4007f;
  border-bottom: none;
}

.kaitou {
  display: flex;
  margin: 15px 20px;
}

.kaitou_label {
  position: relative;
  color: #fff;
  width: 40px;
  height: 40px;
  margin-top: 10px;
  transform: rotate(45deg);
  flex-shrink: 0;
}

.kaitou_label_1 {
  background: #0093dc;
}

.kaitou_label_2 {
  background: #00a73c;
}

.kaitou_label_3 {
  background: #e4007f;
}

.kaitou_label p {
  position: absolute;
  display: inline-block;
  font-size: 24px;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) rotate(-45deg);
  transform-origin: center center;
}

.kaitou_text {
  margin-left: 25px;
}
.ac_inner_wraper .kaitou_text {
  margin-left: 0;
}

.kaitou_a {
  display: inline-block;
  margin-top: 9px;
  font-size: 20px;
  line-height: 30px;
  letter-spacing: -0.15rem;
}

.kaitou_b {
  padding-left: 4px;
}

.answerInner .box1 {
  margin-bottom: 20px;
}

.footer2 {
  position: relative;
  background: rgba(255, 255, 255, 0.8);
  color: #fff;
  text-align: center;
  padding: 15px 0;
}
.footer2_inner,
.footer3_inner {
  width: 95%;
  max-width: 450px;
  margin: 0 auto;
}

.footer2 .btn1 {
  box-sizing: border-box;
  width: 90%;
  margin: 0 auto;
}

.footer3 {
  position: relative;
  margin: 0;
  padding: 20px 0;
  background: rgba(0, 0, 0, 0.6);
  width: 100vw;
}
.footer3_inner {
  padding: 10px 0 20px;
}

.footer3 p {
  display: block;
  margin: 0 auto;
  padding: 15px;
  color: #fff;
  width: fit-content;
  max-width: 90vw;
}

/* ヒント */
.hint_body {
  width: 95%;
  max-width: 500px;
  margin: 0 auto;
}
.accordion {
	max-width: 500px;
  padding: 0 0 10px;
	margin:0 auto;
}

.accordion_container {
  max-width: 500px;
  margin: 0 auto 15px;
}

.accordion_title {
  width: 100%;
  max-width: 750px;
  margin: 10px auto;
  border-radius: 100vh;
  padding: 1em 2em 0.8em;
  line-height: 1;
  display: inline-block;
  background: #aa1bff;
  color: #fff;
  box-shadow: 0 5px 0 #fff;
  border: 3px solid #fff;
  position: relative;
  z-index: +1;
  cursor: pointer;
  transition-duration: 0.2s;
}

.icon_wrap {
  display: flex;
  justify-content: center;
  align-items: center;
  position: absolute;
  top: 50%;
  right: 5%;
  width: 40px;
  height: 40px;
  margin-top: -20px;
  box-sizing: border-box;
  -webkit-transform: rotate(45deg);
  transform: rotate(45deg);
  transform-origin: center center;
  transition-duration: 0.2s;
}

.icon {
  display: block;
  width: 18px;
  height: 18px;
  -webkit-transform: rotate(45deg);
  transform: rotate(45deg);
  transform-origin: center center;
  transition-duration: 0.2s;
  position: relative;
}

.accordion_title.open .icon_wrap {
  -webkit-transform: rotate(-360deg);
  transform: rotate(-360deg);
}

.icon:before,
.icon:after {
  display: flex;
  content: "";
  background-color: #fff;
  border-radius: 10px;
  width: 18px;
  height: 4px;
  position: absolute;
  top: 7px;
  left: 0;
  -webkit-transform: rotate(0deg);
  transform: rotate(0deg);
  transform-origin: center center;
}

.icon:before {
  width: 4px;
  height: 18px;
  top: 0;
  left: 7px;
}

.accordion_title.open .icon_wrap .icon:before {
  content: none;
}

.accordion_title.open .icon_wrap .icon:after {
  -webkit-transform: rotate(-45deg);
  transform: rotate(-45deg);
}

.accordion_inner {
  display: none;
  padding: 5px 10px;
  box-sizing: border-box;
}

.ac_inner_wraper {
  margin: 0 auto 40px;
  padding: 5px 5%;
  width: 90%;
  max-width: 750px;
  background-color: #fff;
  border-radius: 12px;
}
.accordion_container .ac_inner_wraper {
  margin: 0px auto;
  padding: 0 0 20px 0;
}
.hint_ac {
  width: 100%;
  margin: 0px auto !important;
  padding: 0 15px 10px !important;
}
.accordion_p {
  margin-inline: auto;
  max-inline-size: max-content;
  margin-bottom: 0;
  padding: 15px;
  vertical-align: middle;
	text-align:justify;
}
.accordion_p img,.kaitou_b img {
  display: inline-block;
	width:auto;
  height: 2em;
	padding:0 1.5px;
  vertical-align: middle;
}
.accordion_p:has(img) {
  align-items: center;
  gap: 8px;
}

.kaitou_b:has(img) {
  align-items: center;
  gap: 8px;
}

@media screen and (max-width: 1024px) {
  .accordion_title {
    font-size: 18px;
  }

  .icon_wrap {
    width: 30px;
    height: 30px;
    margin-top: -15px;
  }
}

@media screen and (max-width: 767px) {
  .accordion_title {
    font-size: 16px;
    text-align: left;
    padding: 15px 60px 15px 15px;
  }
}

/* 練習問題 */
.practice_img {
  width: 95%;
  margin: 10px auto;
  max-width: 500px;
}

.practice_img img {
  width: 100%;
}

.anchor_margin:before{
	content: "";
	display: block;
	height: 100px; /* 調整したい高さ（固定ヘッダーの高さ） */
	margin-top: -100px; /* heightと同じ分のネガティブマージン */
	visibility: hidden;
}