/* fonts */
@font-face {
  font-family: 'Rubik';
  src: url("/fonts/Rubik-Regular.woff") format("woff");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Rubik';
  src: url("/fonts/Rubik-Bold.woff") format("woff");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Noto Sans JP';
  src: url("/fonts/NotoSansJP-Regular.woff") format("woff");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Noto Sans JP';
  src: url("/fonts/NotoSansJP-Bold.woff") format("woff");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

body,
button,
input,
optgroup,
select,
textarea {
  font-family: 'Rubik',
  'Noto Sans JP',
  sans-serif;
  letter-spacing: 1px;
}

.is-gradation {
  background: linear-gradient(90deg, #485fc7, #00BDD4);
  background: -webkit-linear-gradient(0deg, #485fc7, #00BDD4);
  color: #ffffff;
}
.text-gradation {
  display: inline-block;
  background: linear-gradient(90deg, #485fc7, #00BDD4);
  background: -webkit-linear-gradient(0deg, #485fc7, #00BDD4);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.is_frame {
  padding: 20px 10px;
  border-radius: 0.25rem;
}
@media screen and (min-width:768px) {
  .is_frame {
    padding: 20px;
    margin-top: 10px;
    margin-bottom: 10px;
  }
}

.open_in_new_tab {
  display: inline-block;
  vertical-align: middle;
  content: url("/images/style/open_in_new.svg");
  margin: 0 3px;
  width: 15px;
  height: 15px;
}


.is_bg_gray {
  background-color: #eee;
}
.is_bg_blue {
  background-color: #D3EDFE;
}
.is_border_black {
  border: 1px solid #000;
}
.is_border_gray {
  border: 1px solid #ddd;
}
.is_border_blue {
  border: 1px solid #485fc7;
}

@media screen and (min-width:768px) {
  .is_bggray {
    padding: 20px;
  }
}
.breadcrumb {
  padding: 0 0.75rem;
  width: 100%;
}
.breadcrumb ul {
  overflow-x: auto;
}
.breadcrumb__current {
  padding-left: 0.75em;

}
.post__narrow {
  max-width: 690px;
  width: 100%;
  margin: 0 auto;
}
.post_title {
  font-size: 1.4rem;
  font-weight: 700;
}

@media screen and (min-width:768px) {
  .post_title {
    font-size: 1.75rem;
    font-weight: 700;
  }
}

.post {
  margin: 2rem 0.5rem;
}

@media screen and (min-width:768px) {
  .post {
    margin: 2rem 0.5rem;
    font-size: 1.1rem;
  }
}

.post h2,
.post h3,
.post h4 {
  margin: 2rem auto;
  text-align: left;
}
.post h2,
.post h3 {
  margin-top: 4rem;
}

.post h2 {
  font-weight: 700;
  font-size: 1.25rem;
  padding: 0.7rem 0.5rem 0.6rem 0.8rem;
  background-color: #f5f3f3;
  border-left: 5px solid #485fc7;
}
.post h3 {
  position: relative;
  font-weight: 700;
  font-size: 1.2rem;
  padding-bottom: 0.25rem;
  padding-left: 0.25rem;
}
.post h3::after {
  position: absolute;
  bottom: -3px;
  left: 0;
  top: inherit;
  content: '';
  width: 100%;
  height: 2px;
  background: #00BDD4;
  background: -webkit-linear-gradient(left, #00BDD4 0%, #485fc7 100%);
  background: linear-gradient(to left, #00BDD4 0%, #485fc7 100%);
}

.post h4 {
  font-weight: 700;
  font-size: 1.1rem;
  padding-left: 0.8rem;
  border-left: 5px solid #485fc7;
}

@media screen and (min-width:768px) {
  .post h2 {
    font-size: 1.35rem;
  }
  .post h3 {
    font-size: 1.25rem;
  }
  .post h4 {
    font-size: 1.2rem;
  }
}

.post ol {
  padding: 15px 15px 15px 35px;
}
.post ul {
  list-style-type: disc;
  padding: 15px 15px 15px 35px;
}

@media screen and (min-width:768px) {
  .post ol {
    padding: 20px 20px 20px 40px;
  }
  .post ul {
    padding: 20px 20px 20px 40px;
  }
}

.post p {
  line-height: 1.6;
  padding: 0.75rem 0;
}

.post img {
  border-radius: 0.5rem;
}

.post blockquote {
  position: relative;
  border-left: 3px solid #485fc7;
  padding-left: 10px;
}

.post blockquote:before {
  position: absolute;
  content: '“';
  font-size: 20px;
  color: #485fc7;
}

.post blockquote p {
  position: relative;
  padding-left: 20px;
}

.post blockquote cite {
  display: block;
  font-size: 0.8rem;
  color: #485fc7;
  text-align: right;
  font-style: normal;
}

#TableOfContents {
  padding: 10px;
  font-size: inherit;
  line-height: 1.3rem;
  background: rgba(255, 255, 255, 0.6);
}
#TableOfContents ul {
  padding-left: 20px;
  list-style: disc;
  margin-bottom: 10px;
}
#TableOfContents ul ul {
  list-style: circle;
}
#TableOfContents li {
  padding-top: 5px;
}

.toc_fixed {
  font-size: 0.85em;
  max-height: 500px;
  background-color: #fff;
  box-shadow: -5px -5px 5px #eee, 5px 5px 5px #eee;
  overflow-y: scroll;
  margin: 1rem 0.5rem;
}

@media screen and (min-width:1024px) {
  .toc_fixed {
    position: -webkit-sticky;
    position: sticky;
    top: 0;
    font-size: 0.85em;
    max-height: 100vh;
    box-shadow: none;
    border-left: 1px solid #ddd;
    overflow-y: scroll;
    margin: 1rem 0 0 2rem;
  }
}

.toc_fixed_label {
  padding: 15px 10px 0;
}

.post table {
  width: 100%;
  font-size: 90%;
  border-collapse: collapse;
  border-spacing: 0;
  margin-top: 2rem;
  margin-bottom: 2rem;
  border-radius: 0.25rem;
  overflow: hidden;
  border-collapse: separate;
}
.post table thead tr {
  background-color: #bee2fa;
  border-bottom: solid 1px #aaa;
}
.post table th,
.post table td {
  padding: 10px;
  border-right: solid 1px #aaa;
}
.post table th:last-child,
.post table td:last-child {
  border-right: none;
}
.post table tbody tr:nth-child(even) {
  background-color: #eee
}
.post pre {
  margin-top: 2rem;
  margin-bottom: 2rem;
}
.post blockquote {
  margin-top: 2rem;
  margin-bottom: 2rem;
}
.post a {
  text-decoration: underline;
}
.post a:hover {
  text-decoration: none;
}
.post a.button {
  text-decoration: none;
}

.post .author-box {
  position: relative;
  width: auto;
  margin: 2rem auto 1rem;
  padding: 19px 10px 15px;
  border-radius: 5px;
  border: solid 1px #999;
}

.post .author-box .author-box__title {
  position: absolute;
  top: -11px;
  left: 5;
  width: auto;
  margin: auto;
  padding: 0 10px;
  color: #333;
  font-size: 15px !important;
  font-weight: 700;
  background-color: #fff;
}

.post .title-box {
  position: relative;
  width: auto;
  margin: 2rem auto 1rem;
  padding: 19px 10px 15px;
  border-radius: 5px;
  border: solid 1px #999;
  background-color: #D3EDFE;
}
.post .title-box.title-box__yellow {
  background-color: #f8e05a;
}

.post .title-box.title-box__gray {
  background-color: #eeeeee;
}

.post .title-box .title-box__title {
  position: absolute;
  top: -17px;
  left: 5;
  width: auto;
  margin: auto;
  padding: 5px 10px;
  color: #000;
  font-size: 15px !important;
  font-weight: 700;
  background-color: #fff;
  border: 1px solid #000;
}


.custom-title {
  position: relative;
  top: 10;
}

footer {
  margin-top: 10rem;
}