/* ==================== style.css ==================== */

@charset "UTF-8";
.homework.experiment section > hr {
  border: none;
  margin: 0;
  height: 2em;
}
.homework.experiment section > hr + hr {
  height: 1em;
}
@media (max-width: 640px) {
  .homework.experiment .top-head {
    position: relative;
    margin: 0 0.5em;
    padding-top: 1px;
  }
}
@media (min-width: 641px) {
  .homework.experiment .top-head {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: -5em;
  }
}
.homework.experiment .top-head p {
  color: var(--color-exp-blue);
  font-weight: bold;
  text-align: center;
  line-height: 1.4;
}
@media (min-width: 641px) {
  .homework.experiment .top-head p {
    order: 2;
    transform: translateY(1.5em);
  }
}
@media (max-width: 640px) {
  .homework.experiment .top-head p span {
    display: block;
  }
}
@media (max-width: 640px) {
  .homework.experiment .top-head p br {
    display: none;
  }
}
@media (max-width: 640px) {
  .homework.experiment .top-head img {
    position: absolute;
    bottom: 40%;
    font-size: 80%;
  }
  .homework.experiment .top-head img:nth-of-type(1) {
    left: 0;
  }
  .homework.experiment .top-head img:nth-of-type(2) {
    right: 0;
  }
}
@media (min-width: 641px) {
  .homework.experiment .top-head img:nth-of-type(1) {
    order: 1;
    right: 100%;
  }
  .homework.experiment .top-head img:nth-of-type(2) {
    order: 3;
    left: 100%;
  }
}
.homework.experiment .top-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-top: 1em;
}
@media (max-width: 640px) {
  .homework.experiment .top-content {
    padding: 0 1em;
  }
}
.homework.experiment .contents-list {
  display: grid;
}
@media (max-width: 640px) {
  .homework.experiment .contents-list {
    grid-row-gap: 1.5em;
  }
}
@media (min-width: 641px) {
  .homework.experiment .contents-list {
    grid-row-gap: 1em;
  }
}
.homework.experiment .contents-list ul {
  display: grid;
  align-items: start;
  justify-content: center;
  margin: 0;
  padding: 0;
  list-style-type: none;
}
@media (max-width: 640px) {
  .homework.experiment .contents-list ul {
    padding: 0 1em;
  }
  .homework.experiment.toppage .contents-list ul {
    padding: 0 0.5em;
  }
  .homework.experiment .contents-list ul:nth-of-type(1) {
    grid-gap: 0.75em;
  }
  .homework.experiment .contents-list ul:nth-of-type(2) {
    grid-gap: 1em;
  }
}
@media (min-width: 641px) {
  .homework.experiment .contents-list ul::after {
    content: none;
  }
}
@media (max-width: 640px) {
  .homework.experiment .contents-list ul {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (min-width: 641px) {
  .homework.experiment .contents-list ul {
    width: 45em;
    grid-gap: 1.2em 1.5em;
    grid-template-columns: repeat(8, 1fr);
  }
}
.homework.experiment .contents-list ul li {
  display: flex;
  transition: 150ms;
}
@media (min-width: 641px) {
  .homework.experiment .contents-list ul li {
    grid-column: span 2;
  }
  .homework.experiment .contents-list ul li:hover {
    transform: scale(1.05);
  }
  .homework.experiment .contents-list ul li:nth-of-type(5) {
    grid-column: 2/4;
  }
}
.homework.experiment.toppage .contents-list ul li:hover {
  transform: scale(1.05);
}

.homework.experiment:not(.toppage) .contents-list ul li:not(.on):not(:hover) {
  opacity: 0.7;
}

.homework.experiment .contents-list ul li:nth-of-type(4), .homework.experiment .contents-list ul li:nth-of-type(5), .homework.experiment .contents-list ul li:nth-of-type(8) {
  position: relative;
}
.homework.experiment .contents-list ul li:nth-of-type(4)::before, .homework.experiment .contents-list ul li:nth-of-type(5)::before, .homework.experiment .contents-list ul li:nth-of-type(8)::before {
  content: "";
  position: absolute;
  left: -0.8em;
  top: 2.4em;
  aspect-ratio: 74/56;
  width: 3.6em;
  background: no-repeat center center/contain;
}
.homework.experiment .contents-list ul li:nth-of-type(4)::before {
  background-image: url(../images/experiment/ranking_crown_2.png);
}
.homework.experiment .contents-list ul li:nth-of-type(5)::before {
  background-image: url(../images/experiment/ranking_crown_1.png);
}
.homework.experiment .contents-list ul li:nth-of-type(8)::before {
  background-image: url(../images/experiment/ranking_crown_3.png);
}
@media (max-width: 640px) {
  .homework.experiment .contents-list ul li:last-child {
    transform: translateX(50%);
  }
}
.homework.experiment .lets-imagine {
  display: flex;
  flex-direction: column;
  align-items: center;
}
.homework.experiment .lets-imagine > p {
  margin: 0;
  color: #ff7b00;
  font-size: 110%;
  font-weight: bold;
  line-height: 1.3;
  text-align: center;
}
@media (max-width: 640px) {
  .homework.experiment.icecream2 .lets-imagine > p {
    font-size: 100%;
  }
}
.homework.experiment .lets-imagine > p span {
  display: block;
}
.homework.experiment .lets-imagine .point {
  margin: 1.5em auto;
}
.homework.experiment .lets-imagine .point ul {
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0;
  padding: 0;
  list-style-type: none;
}
.homework.experiment .lets-imagine .point ul::after {
  content: none;
}
.homework.experiment .lets-imagine .point ul li {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 12.5em;
  height: 7em;
  background: url(../images/experiment/imagine_point_back.png) no-repeat center center/contain;
  color: #005fb8;
  font-size: 90%;
  font-weight: bold;
  line-height: 1.3;
}
.homework.experiment .lets-imagine .point ul li span {
  transform: translateX(-0.25em);
}
.homework.experiment .lets-imagine .point::after {
  content: "";
  display: block;
  width: 100%;
  height: 3em;
  margin-top: 0.5em;
  visibility: visible;
  background: url(../images/experiment/imagine_point_chara.png) no-repeat center center/contain;
}
.homework.experiment .lets-imagine .q {
  display: grid;
  grid-gap: 1.5em;
}
@media (min-width: 641px) {
  .homework.experiment .lets-imagine .q {
    width: 36em;
  }
}
.homework.experiment .lets-imagine .q::after {
  content: none;
}
.homework.experiment .try {
  display: grid;
  grid-gap: 1em;
  justify-items: center;
}
.homework.experiment .try > h4 {
  margin: 0;
  color: var(--color-orange);
  font-size: 120%;
  text-align: center;
  line-height: 1.3;
}
@media (min-width: 641px) {
  .homework.experiment .try > h4 {
    width: 20em;
  }
}
.homework.experiment .try > h4 span {
  display: inline-block;
}
@media (min-width: 641px) {
  .homework.experiment.lassie .try > h4 span:nth-of-type(1) {
    display: block;
  }
}
.homework.experiment .try > h4 img {
  height: 5.7em;
}
.homework.experiment .try > h4 small {
  display: block;
  font-weight: normal;
  font-size: 80%;
}
.homework.experiment .try > hr {
  border: none;
  margin: 0;
}
.homework.experiment .try .prepare {
  position: relative;
  align-self: stretch;
  box-sizing: border-box;
  width: 100%;
  padding: 1.5em;
}
@media (max-width: 640px) {
  .homework.experiment .try .prepare {
    padding-top: 0;
  }
}
.homework.experiment .try .prepare::before {
  content: "";
  display: block;
  position: absolute;
  left: 0;
  bottom: 0;
  box-sizing: border-box;
  width: 100%;
  border: 2px solid var(--color-exp-border-lightblue);
  border-radius: 1.5em;
}
@media (max-width: 640px) {
  .homework.experiment .try .prepare::before {
    height: calc(100% - 3em);
  }
}
@media (min-width: 641px) {
  .homework.experiment .try .prepare::before {
    height: 100%;
  }
}
.homework.experiment .try .prepare > * {
  position: relative;
}
.homework.experiment .try .prepare hr {
  margin: 1.5em 0;
}
@media (min-width: 641px) {
  .homework.experiment .try .prepare .chara {
    position: absolute;
    right: 0;
    bottom: 100%;
    transform: translate(-1em, 1em);
  }
}
.homework.experiment .try .prepare .chara p {
  margin: 0;
}
@media (max-width: 640px) {
  .homework.experiment .try .prepare .chara p {
    text-align: right;
  }
}
@media (max-width: 640px) {
  .homework.experiment .try .prepare .chara p img {
    width: 18em;
  }
}
@media (min-width: 641px) {
  .homework.experiment .try .prepare .chara p img {
    width: 9.6em;
  }
}
@media (max-width: 640px) {
  .homework.experiment .try .prepare .list {
    display: grid;
    grid-gap: 1.5em;
    justify-items: center;
  }
}
@media (min-width: 641px) {
  .homework.experiment .try .prepare .list {
    display: flex;
    width: 100%;
    align-items: center;
  }
}
.homework.experiment .try .prepare .list h5,
.homework.experiment .try .prepare .list figure {
  margin: 0;
}
@media (min-width: 641px) {
  .homework.experiment .try .prepare .list h5,
  .homework.experiment .try .prepare .list figure {
    flex-shrink: 0;
  }
}
@media (min-width: 641px) {
  .homework.experiment .try .prepare .list h5 {
    margin-right: 2em;
  }
}
@media (max-width: 640px) {
  .homework.experiment .try .prepare .list h5 img {
    width: 5em;
  }
}
@media (min-width: 641px) {
  .homework.experiment .try .prepare .list h5 img {
    width: 4.5em;
  }
}
@media (max-width: 640px) {
  .homework.experiment .try .prepare .list figure img {
    width: 15em;
  }
}
@media (min-width: 641px) {
  .homework.experiment .try .prepare .list figure img {
    width: 11em;
  }
}
.homework.experiment .try .prepare .list.materials h6 {
  margin: 0;
  color: var(--color-orange);
}
@media (max-width: 640px) {
  .homework.experiment .try .prepare .list.materials h6 {
    font-size: inherit;
  }
}
@media (min-width: 641px) {
  .homework.experiment .try .prepare .list.materials h6 {
    width: 100%;
    font-size: 80%;
  }
}
.homework.experiment .try .prepare .list.materials h6::before {
  content: "★";
}
.homework.experiment .try .prepare .list.materials h6:nth-of-type(n+2) {
  margin-top: 1em;
}
.homework.experiment .try .prepare .list .text {
  display: grid;
  grid-gap: 1em;
}
@media (min-width: 641px) {
  .homework.experiment .try .prepare .list .text {
    display: flex;
    flex-wrap: wrap;
    flex-grow: 2;
    margin-right: 1em;
  }
}
.homework.experiment .try .prepare .list .text dl,
.homework.experiment .try .prepare .list .text ul {
  margin: 0;
  line-height: 1.3;
}
@media (min-width: 641px) {
  .homework.experiment .try .prepare .list .text dl,
  .homework.experiment .try .prepare .list .text ul {
    font-size: 80%;
  }
}
.homework.experiment .try .prepare .list .text dt,
.homework.experiment .try .prepare .list .text dd,
.homework.experiment .try .prepare .list .text li {
  margin-top: 0.4em;
}
.homework.experiment .try .prepare .list .text dl + dl,
.homework.experiment .try .prepare .list .text ul + ul {
  margin-top: 1em;
}
.homework.experiment .try .prepare .list .text dt,
.homework.experiment .try .prepare .list .text li {
  position: relative;
  padding-left: 1.25em;
}
.homework.experiment .try .prepare .list .text dt::before,
.homework.experiment .try .prepare .list .text li::before {
  content: "●";
  position: absolute;
  left: 0;
  transform: scale(0.5);
  color: var(--color-exp-blue);
}
.homework.experiment .try .prepare .list .text small {
  font-size: 80%;
}
.homework.experiment .try .prepare .list .text dl {
  overflow: hidden;
  position: relative;
}
@media (min-width: 641px) {
  .homework.experiment .try .prepare .list .text dl {
    min-width: 20em;
  }
}
.homework.experiment .try .prepare .list .text dl::before {
  content: "";
  display: block;
  position: absolute;
  z-index: 1;
  left: 0;
  top: 0;
  width: 2em;
  height: 100%;
  background: white;
}
.homework.experiment .try .prepare .list .text dl::after {
  content: "";
  display: block;
  clear: both;
}
.homework.experiment .try .prepare .list .text dl dt {
  clear: both;
  float: left;
  position: relative;
  z-index: 2;
  background: white;
  padding-right: 0.25em;
}
.homework.experiment .try .prepare .list .text dl dd {
  position: relative;
  z-index: 0;
  float: right;
  margin-left: 2em;
}
.homework.experiment .try .prepare .list .text dl dd::before {
  content: "";
  position: absolute;
  right: 100%;
  width: 100vw;
  height: 100%;
  transform: translateX(-0.25em);
  background: linear-gradient(to right, gray 33%, white 33%) repeat-x right center/6px 2px;
}
.homework.experiment .try .prepare .list .text dl dd.note {
  clear: both;
  float: left;
  z-index: 2;
  margin-left: 1.25em;
  font-size: 80%;
}
.homework.experiment .try .prepare .list .text dl dd.note::before {
  content: none;
}
.homework.experiment .try .prepare .list .text ul {
  padding: 0;
  list-style-type: none;
}
.homework.experiment .try .arrange-comment {
  display: flex;
  margin-top: 1.5em;
}
.homework.experiment .try .arrange-comment::before {
  content: "";
  display: block;
  min-width: 3.6666666667em;
  width: 3.6666666667em;
  height: 2.5333333333em;
  margin-right: 0.5em;
  background: url(../images/experiment/arrange_comment_chara.png) no-repeat center center/contain;
}
.homework.experiment .try .arrange-comment p {
  margin: 0;
  color: var(--color-exp-blue);
}
@media (min-width: 641px) {
  .homework.experiment .try .arrange-comment p {
    font-size: 80%;
  }
}
@media (min-width: 641px) {
  .homework.experiment .try .arrange {
    box-sizing: border-box;
    width: 38em;
  }
}
.homework.experiment .try .arrange h4 {
  background: linear-gradient(0deg, rgb(0, 115, 222) 0%, rgb(0, 162, 222) 100%);
  font-size: inherit;
  line-height: 3em;
  margin: 0;
  padding-left: 1em;
}
@media (max-width: 640px) {
  .homework.experiment .try .arrange h4 {
    border-radius: 1em 1em 0 0;
  }
}
@media (min-width: 641px) {
  .homework.experiment .try .arrange h4 {
    border-radius: 1.5em 1.5em 0 0;
  }
}
.homework.experiment .try .arrange h4 img {
  vertical-align: middle;
}
.homework.experiment .try .arrange .body {
  border: solid var(--color-exp-border-lightblue);
  border-width: 0 2px 2px;
}
@media (max-width: 640px) {
  .homework.experiment .try .arrange .body {
    border-radius: 0 0 1em 1em;
    padding: 1em 1em 1.5em;
  }
}
@media (min-width: 641px) {
  .homework.experiment .try .arrange .body {
    display: flex;
    align-items: center;
    border-radius: 0 0 1.5em 1.5em;
    padding: 1.25em;
  }
}
.homework.experiment .try .arrange p,
.homework.experiment .try .arrange figure {
  margin: 0;
}
@media (max-width: 640px) {
  .homework.experiment .try .arrange figure {
    margin-top: 1em;
    text-align: center;
  }
}
@media (min-width: 641px) {
  .homework.experiment .try .arrange figure {
    flex-grow: 1;
    margin-top: -3em;
    margin-left: 1em;
  }
}
.homework.experiment .try .arrange figure img {
  border: 2px solid var(--color-exp-border-lightblue);
  padding: 0.5em;
  background: white;
  transform: rotate(2deg);
}
@media (min-width: 641px) {
  .homework.experiment .try .arrange figure img {
    max-width: none;
  }
}
@media (min-width: 641px) {
  .homework.experiment .try .arrange .text {
    flex-grow: 0;
  }
}
@media (min-width: 641px) {
  .homework.experiment .try .arrange .text > p {
    font-size: 80%;
  }
}
.homework.experiment .try .arrange .text .comment {
  margin-top: 1em;
}
.homework.experiment .try .arrange .text .comment p {
  white-space: nowrap;
}
@media (max-width: 640px) {
  .homework.experiment .try .arrange .text .comment img {
    font-size: 3.25vw;
  }
}
.homework.experiment .try .pudding-option {
  display: grid;
  border: 2px solid var(--color-exp-border-lightblue);
  border-radius: 1.5em;
  padding: 1.5em;
  justify-items: center;
}
.homework.experiment .try .pudding-option .pic1 {
  grid-area: pic1;
}
.homework.experiment .try .pudding-option .pic2 {
  grid-area: pic2;
}
.homework.experiment .try .pudding-option .chara {
  grid-area: chara;
}
.homework.experiment .try .pudding-option p:nth-of-type(1) {
  grid-area: p1;
}
.homework.experiment .try .pudding-option p:nth-of-type(2) {
  grid-area: p2;
}
@media (max-width: 640px) {
  .homework.experiment .try .pudding-option {
    grid-template-columns: 1fr 9.5em;
    grid-template-areas: "p1 pic1" "p2 p2" "pic2 pic2" "chara chara";
    grid-gap: 1.5em 1em;
  }
}
@media (min-width: 641px) {
  .homework.experiment .try .pudding-option {
    grid-template-columns: 1fr 9.5em;
    grid-template-areas: "p1 pic1" "p2 pic1" "pic2 pic2" "chara chara";
    grid-gap: 1.5em;
  }
}
.homework.experiment .try .pudding-option .pic1 {
  width: 9.5em;
}
.homework.experiment .try .pudding-option .pic2 {
  width: 30em;
}
.homework.experiment .try .pudding-option .chara {
  width: 20.8em;
}
.homework.experiment .try .pudding-option::after {
  content: none;
}
.homework.experiment .try .pudding-option p {
  margin: 0;
}
@media (max-width: 640px) {
  .homework.experiment .try .pudding-option p {
    font-size: 90%;
  }
  .homework.experiment .try .pudding-option p:nth-of-type(1) {
    align-self: center;
  }
}
@media (min-width: 641px) {
  .homework.experiment .try .pudding-option p {
    font-size: 80%;
  }
  .homework.experiment .try .pudding-option p:nth-of-type(1) {
    align-self: end;
  }
  .homework.experiment .try .pudding-option p:nth-of-type(2) {
    align-self: start;
  }
}
.homework.experiment .charange-lead {
  margin: 0;
  color: #005fb8;
  font-weight: bold;
  text-align: center;
}
@media (max-width: 640px) {
  .homework.experiment .charange-lead {
    margin: 0 0 2em;
  }
}
@media (min-width: 641px) {
  .homework.experiment .charange-lead {
    width: 38em;
    margin: 0 0 2.5em;
    font-size: 80%;
  }
}
.homework.experiment .charange-lead span {
  display: inline-block;
}
.homework.experiment .charange {
  box-sizing: border-box;
  background: white;
}
@media (max-width: 640px) {
  .homework.experiment .charange {
    border-radius: 1.5em;
    padding: 1.5em;
  }
}
@media (min-width: 641px) {
  .homework.experiment .charange {
    border-radius: 2em;
    padding: 1.5em;
  }
}
.homework.experiment .charange:nth-of-type(1) {
  position: relative;
}
.homework.experiment .charange:nth-of-type(1)::before {
  content: "";
  display: block;
  position: absolute;
  right: 0;
  bottom: 100%;
  background: url(../images/experiment/charange_chara.png) no-repeat right bottom/contain;
}
@media (max-width: 640px) {
  .homework.experiment .charange:nth-of-type(1)::before {
    width: 5em;
    height: 5em;
    transform: translateY(60%);
  }
}
@media (min-width: 641px) {
  .homework.experiment .charange:nth-of-type(1)::before {
    width: 7em;
    height: 7em;
    transform: translateY(30%);
  }
}
.homework.experiment .charange:nth-of-type(n+2) {
  margin-top: 1.5em;
}
.homework.experiment .charange h4 {
  display: flex;
  flex-wrap: wrap;
  color: var(--color-orange);
  line-height: 1.4;
}
@media (max-width: 640px) {
  .homework.experiment .charange h4 {
    margin: 0 0 1em;
    align-self: flex-start;
    font-size: 110%;
  }
  .homework.experiment .charange:nth-of-type(1) h4 {
    margin-right: 4em;
  }
}
@media (min-width: 641px) {
  .homework.experiment .charange h4 {
    margin: 0 0 1em;
    font-size: 100%;
    text-align: center;
  }
}
@media (min-width: 641px) {
  .homework.experiment .charange h4 span {
    display: block;
  }
}
.homework.experiment .charange .main {
  display: grid;
  grid-row-gap: 1em;
  justify-items: center;
  /* pudding */
}
.homework.experiment .charange .main > p {
  margin: 0;
}
@media (min-width: 641px) {
  .homework.experiment .charange .main > p {
    font-size: 80%;
    text-align: center;
  }
}
@media (min-width: 641px) {
  .homework.experiment .charange .main > p span {
    display: block;
  }
}
.homework.experiment .charange .main > figure {
  margin: 0;
}
@media (min-width: 641px) {
  .homework.experiment .charange .main.image {
    width: 100%;
    box-sizing: border-box;
    position: relative;
  }
  .homework.experiment .charange:nth-of-type(odd) .main.image {
    padding-left: 8em;
  }
  .homework.experiment .charange:nth-of-type(even) .main.image {
    padding-right: 8em;
  }
}
.homework.experiment .charange .main.image > img {
  width: 6.4em;
}
@media (max-width: 640px) {
  .homework.experiment .charange .main.image > img {
    display: block;
  }
}
@media (min-width: 641px) {
  .homework.experiment .charange .main.image > img {
    position: absolute;
    top: 0;
  }
  .homework.experiment .charange:nth-of-type(odd) .main.image > img {
    left: 4em;
    transform: translateX(-50%);
  }
  .homework.experiment .charange:nth-of-type(even) .main.image > img {
    right: 4em;
    transform: translateX(50%);
  }
}
@media (min-width: 641px) {
  .homework.experiment .charange .main.image img[src*=charange_image_twolayerjelly_3_2] {
    width: 25em;
  }
}
.homework.experiment .charange .main__content {
  display: grid;
  grid-template-columns: 6.6em 1fr;
  background-position: left bottom;
  padding: 1em 0;
}
@media (max-width: 640px) {
  .homework.experiment .charange .main__content {
    grid-gap: 1em;
    align-items: center;
  }
  .homework.experiment .charange .main__content .advices,
  .homework.experiment .charange .main__content .notes {
    grid-column: span 2;
  }
}
@media (min-width: 641px) {
  .homework.experiment .charange .main__content {
    grid-gap: 1.5em;
    width: 100%;
  }
  .homework.experiment .charange .main__content::after {
    content: none;
  }
}
.homework.experiment .charange .main__content:nth-of-type(1) {
  padding-top: 0;
}
.homework.experiment .charange .main__content:nth-last-of-type(1) {
  padding-bottom: 0;
}
.homework.experiment .charange .main__content p {
  margin: 0;
}
@media (min-width: 641px) {
  .homework.experiment .charange .main__content p {
    margin-top: 1em;
    font-size: 80%;
  }
}
@media (min-width: 641px) {
  .homework.experiment .charange .main__content .image {
    grid-row: span 2;
  }
}
@media (min-width: 641px) {
  .homework.experiment .charange .main__content .notes {
    margin-top: -1em;
  }
}
.homework.experiment .charange .main__content .notes p {
  color: var(--color-exp-blue);
  font-size: 90%;
}
@media (min-width: 641px) {
  .homework.experiment .charange .main__content .notes p {
    font-size: 70%;
  }
}
.homework.experiment .charange .advices {
  display: grid;
  margin-top: 1.5em;
}
@media (max-width: 640px) {
  .homework.experiment .charange .advices {
    grid-gap: 0.5em;
  }
}
@media (min-width: 641px) {
  .homework.experiment .charange .advices > p {
    font-size: 80%;
  }
}
.homework.experiment .charange .comment {
  margin-top: 1.5em;
}
.homework.experiment .charange .comment h5 {
  margin: 0 0 1em;
  font-size: inherit;
  text-align: center;
}
.homework.experiment .charange .comment p {
  margin: 0;
  color: var(--color-exp-blue);
}
@media (min-width: 641px) {
  .homework.experiment .charange .comment p {
    font-size: 80%;
  }
}
@media (max-width: 640px) {
  .homework.experiment .charange .comment p br {
    display: none;
  }
}
.homework.experiment .charange .link {
  margin-top: 1.5em;
}
.homework.experiment .charange .link figure {
  display: grid;
  grid-gap: 0.5em;
  justify-items: center;
  margin: 0;
}
.homework.experiment .charange .link figure img {
  width: 17em;
}
.homework.experiment .charange .link figure figcaption {
  color: var(--color-exp-blue);
  font-weight: bold;
  font-size: 80%;
  white-space: nowrap;
}
.homework.experiment .charange .recipe {
  position: relative;
  box-sizing: border-box;
  width: 100%;
  border-radius: 1em;
  margin-top: 4em;
  padding: 2.5em 1em 1em;
  background: #ffebeb;
}
.homework.experiment .charange .recipe h5 {
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  margin: 0;
  transform: translateY(-70%);
  text-align: center;
}
.homework.experiment .charange .recipe ul {
  margin: 0;
  padding: 0;
  list-style-type: none;
}
@media (min-width: 641px) {
  .homework.experiment .charange .recipe ul {
    display: flex;
    justify-content: center;
  }
}
.homework.experiment .charange .recipe ul::after {
  content: none;
}
@media (min-width: 641px) {
  .homework.experiment .charange .recipe ul li {
    font-size: 80%;
  }
}
.homework.experiment .charange .recipe ul li img {
  border: 2px solid #efa9a4;
  padding: 0.4em;
  background: white;
  transform: rotate(-2deg);
}
@media (max-width: 640px) {
  .homework.experiment .charange .recipe ul li img {
    width: 8em;
    margin-right: 1em;
  }
}
@media (min-width: 641px) {
  .homework.experiment .charange .recipe ul li img {
    width: 10em;
    margin-bottom: 0.5em;
  }
}
.homework.experiment .charange .recipe ul li a {
  color: #d8271c;
  text-decoration: none;
  font-weight: bold;
}
@media (max-width: 640px) {
  .homework.experiment .charange .recipe ul li a {
    display: flex;
    align-items: center;
    font-size: 90%;
  }
}
@media (min-width: 641px) {
  .homework.experiment .charange .recipe ul li a {
    width: 12em;
    padding: 0 1.5em;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
  }
}
@media (max-width: 640px) {
  .homework.experiment .charange .recipe ul li:nth-of-type(n+2) {
    margin-top: 1em;
  }
}
.homework.experiment .charange .recipe ul li.comingsoon {
  position: relative;
}
.homework.experiment .charange .recipe ul li.comingsoon::before {
  content: "";
  display: block;
  width: 100%;
  height: 100%;
  position: absolute;
  left: 0;
  top: 0;
  z-index: 1;
  background: rgba(255, 255, 255, 0);
}
.homework.experiment .charange .recipe ul li.comingsoon a::before {
  content: "";
  display: block;
  position: absolute;
  z-index: 1;
  left: 0;
  top: -0.75em;
  height: 1.5em;
  transform: rotate(-2deg);
  background: url(../images/experiment/recipe_comingsoon.svg) no-repeat center center/contain;
}
@media (max-width: 640px) {
  .homework.experiment .charange .recipe ul li.comingsoon a::before {
    width: 10em;
  }
}
@media (min-width: 641px) {
  .homework.experiment .charange .recipe ul li.comingsoon a::before {
    width: 100%;
  }
}
@media (min-width: 641px) {
  .homework.experiment .check {
    width: 36em;
  }
}
.homework.experiment .check .explanation h5 {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  font-size: inherit;
  text-align: center;
}
@media (max-width: 640px) {
  .homework.experiment .check .explanation h5 {
    font-size: 120%;
  }
}
@media (min-width: 641px) {
  .homework.experiment .check .explanation p {
    font-size: 80%;
  }
}
.homework.experiment .check .explanation strong {
  color: var(--color-orange);
}
.homework.experiment .check .explanation figure {
  margin: 1.5em auto 0;
  text-align: center;
}
@media (min-width: 641px) {
  .homework.experiment.twolayerjelly .check .explanation figure img {
    max-width: 27em;
  }
}

.homework.experiment .check .principle {
  margin: 2.5em 0;
}
.homework.experiment .check .principle h5 {
  margin: 0 0 1.5em;
  text-align: center;
}
.homework.experiment .check .principle .body {
  display: flex;
  flex-direction: column;
  align-items: center;
}
.homework.experiment .check .principle .body .steps {
  transition: opacity 1s;
}
.homework.experiment .check .principle .body:not(.show) .steps {
  visibility: hidden;
  position: fixed;
  opacity: 0;
}

.homework.experiment .check .principle .body .steps ul {
  margin: 0;
  padding: 0;
  list-style-type: none;
}
.homework.experiment .check .principle .body .steps ul li {
  display: flex;
  align-items: center;
  margin-top: 1em;
}
.homework.experiment .check .principle .body .steps ul li:nth-last-of-type(n+2) {
  padding-bottom: 2.5em;
  background: url(../images/experiment/principle_arrow.svg) no-repeat center bottom/auto 1.25em;
}
@media (min-width: 641px) {
  .homework.experiment .check .principle .body .steps ul li:nth-last-of-type(n+2) {
    background-position: 3.6em bottom;
  }
}
.homework.experiment .check .principle .body .steps ul li .image {
  margin-right: 1em;
}
.homework.experiment .check .principle .body .steps ul li .image figure {
  margin: 0;
}
.homework.experiment .check .principle .body .steps ul li .image figure img {
  max-width: none;
}
@media (min-width: 641px) {
  .homework.experiment .check .principle .body .steps ul li .text {
    font-size: 80%;
  }
}
.homework.experiment .check .principle .body button {
  border: none;
  margin: 0;
  padding: 0;
  background: none;
  cursor: pointer;
}
.homework.experiment .check .principle .body.show button {
  display: none;
}

.homework.experiment .check .question {
  margin: 2em 0;
}
.homework.experiment .check .question h5 {
  display: flex;
  background: #e0f6ff;
  color: var(--color-exp-blue);
  border-radius: 1em;
  margin: 0;
  padding: 0.75em;
  line-height: 1.3;
  font-size: inherit;
}
@media (max-width: 640px) {
  .homework.experiment .check .question h5 {
    align-items: center;
  }
}
.homework.experiment .check .question h5:nth-of-type(n+2) {
  margin-top: 2em;
}
.homework.experiment .check .question h5::before {
  content: "";
  display: block;
  width: 1em;
  height: 1em;
  margin-right: 1em;
  transform-origin: 50% 100%;
  transform: scale(2.5);
  background: url(../images/experiment/check_question_icon.svg) no-repeat center center/contain;
}
.homework.experiment .check .question .answer {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 3em;
  margin-top: 1em;
}
.homework.experiment .check .question .answer button {
  border: none;
  margin: 0;
  padding: 0;
  background: none;
  cursor: pointer;
}
.homework.experiment .check .question .answer.show button {
  display: none;
}

.homework.experiment .check .question .answer .body {
  display: flex;
}
.homework.experiment .check .question .answer:not(.show) .body {
  visibility: hidden;
  position: fixed;
  opacity: 0;
}

.homework.experiment .check .question .answer.show .body {
  opacity: 1;
  transition: 1s;
}

.homework.experiment .check .question .answer .body::before {
  content: "";
  display: block;
  min-width: 4.5em;
  height: 4.5em;
  margin-right: 0.5em;
  background: url(../images/experiment/check_answer_chara.png) no-repeat left center/contain;
}
.homework.experiment .check .question .answer .body p {
  margin: 0;
  color: var(--color-exp-blue);
}
@media (min-width: 641px) {
  .homework.experiment .check .question .answer .body p {
    font-size: 80%;
  }
}
.homework.experiment .check .question .answer .body p img {
  display: block;
  margin: 0.5em auto;
}
@media (max-width: 640px) {
  .homework.experiment .check .study {
    display: flex;
    flex-direction: column;
  }
}
@media (min-width: 641px) {
  .homework.experiment .check .study {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-end;
    justify-content: center;
    margin-top: 2em;
  }
}
.homework.experiment .check .study ul {
  margin: 0;
  padding: 0;
  list-style-type: none;
}
@media (max-width: 640px) {
  .homework.experiment .check .study ul {
    display: flex;
    flex-direction: column;
    margin-top: 5em;
  }
  .homework.experiment .check .study.single ul {
    align-self: center;
  }
}
@media (min-width: 641px) {
  .homework.experiment .check .study ul {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
  }
}
.homework.experiment .check .study ul li {
  display: flex;
  position: relative;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 16em;
  height: 10em;
  background: url(../images/experiment/study_base.svg) no-repeat center center/contain;
  color: var(--color-exp-blue);
  font-weight: bold;
  line-height: 1.3;
  text-align: center;
  white-space: nowrap;
}
@media (max-width: 640px) {
  .homework.experiment .check .study ul li:nth-of-type(n+2) {
    margin-top: 1em;
  }
  .homework.experiment .check .study ul li:nth-of-type(odd) {
    margin-right: auto;
  }
  .homework.experiment .check .study ul li:nth-of-type(even) {
    margin-left: auto;
  }
  .homework.experiment:is(.icecream, .airchoco) .check .study ul li:nth-of-type(3) span, .homework.experiment:is(.icecream, .airchoco) .check .study ul li span {
    transform: scaleX(0.9);
  }
}
@media (min-width: 641px) {
  .homework.experiment .check .study ul li {
    margin: 4em 1em 1em;
  }
  .homework.experiment .check .study ul li:nth-of-type(n+3) {
    margin-top: 1.5em;
  }
  .homework.experiment .check .study ul li span {
    font-size: 90%;
  }
}
.homework.experiment .check .study ul li .illust {
  position: absolute;
  left: 50%;
  top: 0;
  transform: translate(-50%, -60%);
}
.homework.experiment .check .study .chara {
  text-align: center;
}
@media (max-width: 640px) {
  .homework.experiment .check .study .chara {
    margin-top: 1em;
  }
}
.homework.experiment .letsthink h5 {
  margin: 2em auto 1em;
  color: #ff7b00;
  font-size: 110%;
  font-weight: bold;
}
.homework.experiment .letsthink p {
  margin: 1em auto;
}
@media (min-width: 641px) {
  .homework.experiment .letsthink p {
    font-size: 80%;
  }
}
.homework.experiment .letsthink .comment {
  margin: 1em auto;
}
.homework.experiment .summary-thanks {
  position: relative;
  margin-top: 2em;
}
@media (min-width: 641px) {
  .homework.experiment .summary-thanks {
    width: 43em;
  }
}
.homework.experiment .summary-thanks > * {
  position: relative;
}
.homework.experiment .summary-thanks::before {
  content: "";
  display: block;
  position: absolute;
  left: 0;
  bottom: 0;
  box-sizing: border-box;
  width: 100%;
  height: calc(100% - 3.25em);
  border: 0.2em solid #baebff;
  border-radius: 1em;
  background: white;
}
.homework.experiment .summary-thanks h4 {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 6.5em;
  margin: 0;
  background: url(../images/experiment/thanks_title_back.svg) no-repeat center center/contain;
  color: #005fb8;
  line-height: 1.2;
  font-size: inherit;
}
.homework.experiment .summary-thanks .body {
  padding: 1.7em;
}
@media (max-width: 640px) {
  .homework.experiment .summary-thanks .body {
    padding: 1.2em;
  }
}
.homework.experiment .summary-thanks .body figure,
.homework.experiment .summary-thanks .body p {
  margin: 0;
}
@media (max-width: 640px) {
  .homework.experiment .summary-thanks .body figure {
    text-align: center;
  }
}
@media (min-width: 641px) {
  .homework.experiment .summary-thanks .body p {
    font-size: 80%;
  }
}
@media (min-width: 641px) {
  .homework.experiment .summary-thanks .body img {
    max-width: none;
  }
}
.homework.experiment .tips {
  display: grid;
  grid-row-gap: 1.5em;
  justify-items: center;
  position: relative;
  margin-top: 1.5em;
  padding: 1.2em;
}
@media (min-width: 641px) {
  .homework.experiment .tips {
    box-sizing: border-box;
    width: 36em;
  }
  .homework.experiment .tips::after {
    content: none;
  }
}
.homework.experiment .tips > * {
  position: relative;
}
.homework.experiment .tips::before {
  content: "";
  display: block;
  position: absolute;
  left: 0;
  top: 3em;
  left: 0;
  box-sizing: border-box;
  width: 100%;
  height: calc(100% - 3em);
  border: 0.2em solid #c9edff;
  border-radius: 1em;
}
.homework.experiment .tips h4 {
  margin: 0;
}
.homework.experiment .tips h5 {
  margin: 0;
  color: #ff7b00;
  font-weight: bold;
}
@media (max-width: 640px) {
  .homework.experiment .tips h5 {
    font-size: 110%;
  }
}
@media (min-width: 641px) {
  .homework.experiment .tips h5 {
    font-size: 100%;
  }
}
.homework.experiment .tips .content {
  display: grid;
  grid-row-gap: 1em;
}
.homework.experiment .tips .content > p {
  margin: 0;
}
@media (min-width: 641px) {
  .homework.experiment .tips .content > p {
    font-size: 80%;
  }
}
.homework.experiment .check-answer-content {
  display: grid;
  justify-items: center;
  grid-gap: 1.5em;
}
.homework.experiment .check-answer-content p strong.blue {
  color: var(--color-exp-blue);
}
.homework.experiment .check-answer-content figure {
  display: grid;
  grid-gap: 1.5em;
  margin: 0;
}
.homework.experiment .check-answer-content figure figcaption {
  color: var(--color-exp-blue);
  font-weight: bold;
}
@media (max-width: 640px) {
  .homework.experiment .check-answer-content figure figcaption {
    font-size: 110%;
  }
}
@media (min-width: 641px) {
  .homework.experiment .check-answer-content figure figcaption {
    font-size: 90%;
  }
}
.homework.experiment.pudding .check-answer-content figure img {
  width: 34em;
}

.homework.experiment .check-answer__link {
  display: grid;
}
.homework.experiment.twolayerjelly .check-answer__link {
  align-items: start;
  grid-template-columns: repeat(2, 1fr);
  grid-column-gap: 2em;
}

.homework.experiment .check-answer__link figure {
  margin: 0;
  display: grid;
  justify-items: center;
  grid-gap: 0.5em;
}
.homework.experiment .check-answer__link figure figcaption {
  display: grid;
  grid-auto-flow: column;
  align-items: center;
  color: var(--color-exp-blue);
  font-weight: bold;
  line-height: 1;
  font-size: 80%;
}
.homework.experiment .check-answer__link figure figcaption::before, .homework.experiment .check-answer__link figure figcaption::after {
  content: "";
  display: block;
  width: 2px;
  height: 1em;
  background: var(--color-exp-blue);
}
.homework.experiment .check-answer__link figure figcaption::before {
  transform: rotate(-30deg);
  transform-origin: right bottom;
  margin-right: 0.25em;
}
.homework.experiment .check-answer__link figure figcaption::after {
  transform: rotate(30deg);
  transform-origin: left bottom;
}
.homework.experiment .check-answer__link img {
  transition: 150ms;
}
.homework.experiment .check-answer__link img:hover {
  transform: scale(1.05);
}
.homework.experiment.pudding .check-answer__link img {
  width: 20.9em;
}

.homework.experiment.icecream2 .check-answer__link img {
  width: 18em;
}

.homework.experiment.twolayerjelly .check-answer__link img {
  width: 11em;
}