.p-study__question .c-accordion {
  margin-top: 10px;
  padding-inline: 10px;
  position: relative;
  width: 100%;
  cursor: pointer;
  background-color: #F1F1F1;
}
.p-study__question .c-accordion > .c-accordion__head {
  font-size: 20px;
  line-height: 36px;
  font-weight: 400;
}
.p-study__question .c-accordion > .c-accordion__answer {
  display: grid;
  grid-template-rows: 0fr;
  opacity: 0;
  visibility: hidden;
  transition: grid-template-rows 0.3s ease-out, opacity 0.1s linear, visibility 0.1s linear;
}
.p-study__question .c-accordion > .c-accordion__answer > ol {
  overflow: hidden;
  list-style-type: decimal;
  list-style-position: inside;
  font-size: 20px;
  line-height: 0;
  padding-block: 0;
  font-weight: 400;
  transition: line-height 0.3s ease-out, padding-block 0.3s ease-out;
}
.p-study__question .c-accordion.is-open > .c-accordion__answer {
  grid-template-rows: 1fr;
  opacity: 1;
  visibility: visible;
  transition: grid-template-rows 0.3s ease-out, opacity 0.1s linear 0.1s, visibility 0.1s linear 0.1s;
}
.p-study__question .c-accordion.is-open > .c-accordion__answer > ol {
  line-height: 1.8;
  padding-block: 5px;
  transition: line-height 0.3s ease-out, padding-block 0.3s ease-out;
}

html {
  scroll-behavior: smooth;
}

body {
  color: #454545;
  background-color: #FFFFFF;
  font-family: "Noto Sans JP", sans-serif;
}

img {
  max-width: 100%;
  height: auto;
}

ol.bracket-list > li {
  list-style-position: inside;
  counter-increment: my-counter;
}
ol.bracket-list > li::marker {
  content: "(" counter(my-counter) ") ";
}

ol > ol {
  margin-left: 20px;
}

.l-wrapper {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.l-container {
  margin-inline: auto;
  padding-inline: 15px;
  width: 1030px;
  max-width: 100%;
}

.l-header {
  width: 100%;
  z-index: 200;
  background-color: #FFFFFF;
}

.l-header__body {
  padding-top: 20px;
}
.l-header__body > h1 {
  font-size: 12px;
  color: #7B7B7B;
}

.l-header__body-logo {
  width: 220px;
  aspect-ratio: 2.9794871795;
}

.l-header__menu-wrapper {
  margin: 10px 0 0;
  width: 100%;
  min-height: 30px;
  background-color: #68D893;
}

.l-header__menu-list {
  margin-inline: auto;
  display: flex;
}
.l-header__menu-list > li {
  width: 200px;
  color: #EFEFEF;
  display: block;
  font-size: 14px;
  text-align: center;
  padding: 7px 0;
  overflow: hidden;
  border-left: 1px solid #FFFFFF;
}
.l-header__menu-list > li > a {
  display: block;
  width: 100%;
}
.l-header__menu-list > li:last-child {
  border-right: 1px solid #FFFFFF;
}

.l-footer {
  margin-top: auto;
  width: 100%;
  background-color: #133F33;
  z-index: 100;
}

.l-footer > p {
  color: #FFFFFF;
  text-align: center;
  font-size: 14px;
  padding-block: 5px;
}

.l-main {
  z-index: 1;
  overflow: hidden;
  background-color: #EBEFF4;
  min-height: calc(100vh - 175px);
}

.l-main__body {
  margin-block: 10px;
  background-color: #FFFFFF;
  border-radius: 10px;
  padding-block: 10px;
}

.p-frontpage__info {
  margin-bottom: 30px;
}
.p-frontpage__info > p {
  font-size: 20px;
  line-height: 1.1;
  font-weight: 400;
}

.p-frontpage__math h2 {
  margin-block: 3px;
  padding: 10px 5px;
  background-color: #1E1B81;
  color: #FFFFFF;
  font-size: 25px;
  font-weight: 700;
}
.p-frontpage__math h3 {
  margin-block: 3px;
  padding: 4px 5px;
  background-color: #38A5D1;
  color: #FFFFFF;
  font-size: 22px;
  font-weight: 500;
}
.p-frontpage__math ol {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  margin-top: 10px;
  margin-left: 15px;
  font-size: 20px;
  line-height: 1.8;
  font-weight: 400;
}
.p-frontpage__math ol a {
  transition: all 0.3s;
}
.p-frontpage__math ol a:hover {
  opacity: 0.7;
}

.p-study h2 {
  margin-block: 3px;
  padding: 10px 5px;
  background-color: #133F33;
  color: #FFFFFF;
  font-size: 25px;
  font-weight: 700;
}
.p-study h3 {
  margin-block: 3px;
  padding: 4px 5px;
  background-color: #79D138;
  color: #FFFFFF;
  font-size: 22px;
  font-weight: 500;
}
.p-study p {
  font-size: 20px;
  line-height: 1.8;
  font-weight: 400;
}
.p-study .p-study__point {
  display: inline-block;
  margin: 3px;
  padding: 5px;
  background-color: rgba(247, 120, 120, 0.2784313725);
  border-radius: 5px;
  box-shadow: 0 0 3px 0 red inset;
}
.p-study .p-study__question {
  margin-block: 10px;
  padding: 5px 15px;
  border: dashed 1px #000000;
}
.p-study .p-study__question > ol {
  margin-top: 10px;
  list-style-type: decimal;
  list-style-position: inside;
  font-size: 20px;
  line-height: 1.8;
  font-weight: 400;
}
.p-study .p-study__center {
  display: inline-block;
  margin-left: 80px;
  padding: 15px 40px;
  text-align: center;
  background-color: #F1F1F1;
}

.u-color-red {
  color: red;
}

.u-font-weight--bold {
  font-weight: 700;
}

.u-font-weight--black {
  font-weight: 900;
}

.u-margin-left--80 {
  margin-left: 80px;
}

/*# sourceMappingURL=style.css.map */