/* *****************************************************************************
教育理念
***************************************************************************** */
body {
  background-color: #f0f0f0;
}

#wrapper {
  position: relative;
  background: url(../images/philosophy/bg.jpg);
}

#wrapper::after {
  position: absolute;
  content: "";
  display: block;
  background: url(../images/philosophy/header_bg.webp) bottom center repeat-x;
  background-size: 684px;
  width: 100%;
  height: 320px;
  top: 0;
}

@media screen and (max-width: 800px) {
  #wrapper::before {
    position: absolute;
    content: "";
    display: block;
    width: 100%;
    height: calc(72vw - 500px);
    top: 0;
    background-color: #fff;
  }
  #wrapper::after {
    height: 72vw;
  }
}

.section_philosophy {
  position: relative;
  z-index: 1;
  padding-top: 210px;
  padding-bottom: 200px;
}

.section_philosophy > h2 {
  width: 235px;
  margin: auto;
}

@media screen and (max-width: 800px) {
  .section_philosophy {
    padding-top: 50vw;
    padding-bottom: 20vw;
  }
  .section_philosophy > h2 {
    width: auto;
    text-align: center;
  }
  .section_philosophy > h2 > img {
    height: 8vw;
  }
}

.philosophy_body {
  background-color: #ffffffe0;
  border-radius: 48px;
  padding: 20px 0;
  width: 1032px;
  margin: 80px auto 0 auto;
}

@media screen and (max-width: 800px) {
  .philosophy_body {
    border-radius: 2rem;
    padding: 2rem 2rem 4rem 2rem;
    width: calc(90% - 4rem);
    margin: 20vw auto 0 auto;
  }
}

.philosophy_intro_title {
  width: 750px;
  margin: auto;
}

@media screen and (max-width: 800px) {
  .philosophy_intro_title {
    width: 100%;
  }
}

.philosophy_visual {
  width: 960px;
  margin: 45px auto 0 auto;
}

@media screen and (max-width: 800px) {
  .philosophy_visual {
    width: 100%;
    margin: 1rem auto 0 auto;
  }
}

.philosophy_lead {
  position: relative;
  font-size: 16px;
  line-height: 1.8;
  height: 920px;
}

.philosophy_lead h4 + div {
  margin-top: 20px;
}

@media screen and (max-width: 800px) {
  .philosophy_lead {
    font-size: 0.75rem;
    height: auto;
  }

  .philosophy_lead h4 + div {
    margin-top: 1rem;
  }
}

.philosophy_lead .lead1_body {
  width: 525px;
  height: 406px;
  background: url(../images/philosophy/lead1_bg.webp) center center no-repeat;
  background-size: contain;
  padding-top: 120px;
}

.philosophy_lead .lead1_body > .inner {
  width: 350px;
  margin: auto;
}

@media screen and (max-width: 800px) {
  .philosophy_lead .lead1_body {
    width: 100%;
    height: auto;
    /* aspect-ratio: 1; */
    padding-top: 0;
    margin-top: 2rem;
  }
  .philosophy_lead .lead1_body > .inner {
    width: 90%;
  }
}

.philosophy_lead .lead2_body {
  position: absolute;
  top: 300px;
  left: 360px;
  width: 673px;
  height: 489px;
  background: url(../images/philosophy/lead2_bg.webp) center center no-repeat;
  background-size: contain;
  padding-top: 120px;
}
.philosophy_lead .lead2_body > .inner {
  width: 400px;
  margin: auto;
}
.philosophy_lead .lead2_body h4 {
  padding: 0 20px;
}

@media screen and (max-width: 800px) {
  .philosophy_lead .lead2_body {
    position: static;
    width: 100%;
    height: auto;
    aspect-ratio: 1;
    padding-top: 0;
    margin-top: 2rem;
  }
  .philosophy_lead .lead2_body > .inner {
    width: 90%;
  }
  .philosophy_lead .lead2_body h4 {
    padding: 0 1em;
  }
}

.philosophy_lead > .deco {
  width: 1027px;
  height: 988px;
  position: absolute;
  top: -50px;
  left: 2px;
  pointer-events: none;
}

.philosophy_case {
  margin-top: 40px;
  padding-top: 40px;
  font-size: 0.875rem;
}

@media screen and (max-width: 800px) {
  .philosophy_case {
    margin-top: 2rem;
    padding-top: 2rem;
    width: 116%;
    margin-left: -8%;
  }
}

.philosophy_case h3 {
  width: 770px;
  margin: auto;
}

@media screen and (max-width: 800px) {
  .philosophy_case h3 {
    width: 80%;
  }
}

.case_items {
  display: flex;
  flex-wrap: wrap;
  margin-top: 50px;
  padding-bottom: 80px;
}

.case_item {
  flex-basis: 50%;

  .item_lead {
    margin-top: 1em;
  }
}

.case_item:nth-child(even) {
  transform: translateY(80px);
}

@media screen and (max-width: 800px) {
  .case_items {
    margin-top: 2rem;
    padding-bottom: 4rem;
    row-gap: 2rem;
  }

  .case_item {
    flex-basis: 100%;

    .item_lead {
      margin-top: 1em;
    }
  }

  .case_item:nth-child(even) {
    transform: translateY(0);
  }
}

.case_item1 {
  h4 {
    width: 85%;
    margin-left: 2%;
  }
  .item_lead {
    width: 78%;
    margin-left: 8%;
  }
  .item_picture {
    width: 90%;
    margin-left: 6%;
  }
}

.case_item2 {
  h4 {
    width: 85%;
    margin-left: 2%;
  }
  .item_lead {
    width: 78%;
    margin-left: 8%;
  }
  .item_picture {
    width: 80%;
    margin-left: 6%;
  }
}

.case_item3 {
  h4 {
    width: 80%;
    margin-left: 2%;
  }
  .item_lead {
    width: 78%;
    margin-left: 8%;
  }
  .item_picture {
    width: 83%;
    margin-left: 8%;
  }
}

.case_item4 {
  h4 {
    width: 63%;
    margin-left: 2%;
  }
  .item_lead {
    width: 78%;
    margin-left: 8%;
  }
  .item_picture {
    width: 86%;
    margin-left: 8%;
  }
}