:root {
  --base-pc: 1210;
  --base-max: 1210;
  --pc-size: var(--base-pc);
}

@media screen and (max-width: 767px) {
  .is-pc {
    display: none !important;
  }
}
@media screen and (min-width: 768px) {
  .is-sp {
    display: none !important;
  }
}
*,
*::before,
*::after {
  -webkit-box-sizing: border-box;
          box-sizing: border-box;
}

html,
body {
  padding: 0;
  margin: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 52px;
}

body {
  font-family: "Noto Sans JP", sans-serif;
  font-size: 16px;
  line-height: normal;
  font-weight: 500;
  color: #231815;
  background: #fff;
  -webkit-font-smoothing: antialiased;
}

img {
  vertical-align: middle;
  max-width: 100%;
  width: 100%;
  height: auto;
  line-height: 1;
}

ul,
ol {
  list-style: none;
  padding: 0;
  margin: 0;
}

body,
h1,
h2,
h3,
h4,
p,
ul,
ol {
  margin: 0;
  padding: 0;
}

a {
  color: inherit;
  text-decoration: none;
}

/*
  common
*/
body {
  font-size: 0.16rem;
  line-height: 1.8;
  font-weight: 400;
  letter-spacing: 0.006rem;
}

a {
  color: #172c69;
  text-decoration: underline;
  text-underline-offset: 0.1em;
}

.header_inner {
  padding: 0.335rem 0.4rem;
  border-bottom: 1px solid #d9d9d9;
}

.logo img {
  -o-object-fit: contain;
     object-fit: contain;
  max-height: 0.64rem;
}

.footer {
  background: #fff;
  padding: 0.64rem 0.4rem 1.04rem;
}
.footer .copyright {
  color: #8c8c8d;
  font-size: 0.12rem;
  font-weight: 400;
  line-height: 1;
  text-align: center;
}

/*
  content
*/
section {
  max-width: 9rem;
  margin: auto;
  padding: 0.82rem 0.16rem 1.28rem;
  font-weight: 400;
}
section h1 {
  font-size: 0.24rem;
  margin-bottom: 0.4rem;
}
section h1 + p {
  margin-bottom: 0.48rem;
}
section .article {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-orient: vertical;
  -webkit-box-direction: normal;
      -ms-flex-direction: column;
          flex-direction: column;
  gap: 0.32rem;
}
section h2 {
  font-size: 0.18rem;
}
section .article_item {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-orient: vertical;
  -webkit-box-direction: normal;
      -ms-flex-direction: column;
          flex-direction: column;
  gap: 0.12rem;
}