:root {
  --main-text-color: #333535;
  --footer-bg-color: #425a87;
  --pc-content-width: 1280px;
}

html {
  scroll-behavior: smooth;
}

body {
  position: relative;
  font-family: "Noto Sans JP", sans-serif;
  color: var(--main-text-color);
}

body #overlay {
  display: none;
}

body.menu_open {
  overflow: hidden;
  height: 100%;
}

body.menu_open #overlay {
  display: block;
  z-index: 10;
  background: #FFFFFF;
  position: absolute;
  inset: 0;
}

button {
  font-family: "Noto Sans JP", sans-serif;
}

* {
  box-sizing: border-box;
}

ul,
ol {
  list-style: none;
}

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

a {
  text-decoration: none;
  color: var(--main-text-color);
}

.wide img {
  width: 100%;
  height: auto;
}

.en {
  font-family: "Manrope", sans-serif;
}

header {
  position: relative;
  z-index: 100;
}

footer {
  background: var(--footer-bg-color);
  color: #FFFFFF;
}

footer #footer_copyright {
  font-family: "Manrope", sans-serif;
}

@media screen and (min-width: 768px) {
  html {
    font-size: 10px;
  }
  body {
    min-width: var(--pc-content-width);
    letter-spacing: 0.1em;
  }
  .sp {
    display: none;
  }
  header {
    width: var(--pc-content-width);
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 42px 0 30px;
  }
  header #header_navi > ul {
    display: flex;
    justify-content: flex-end;
    gap: 0 54px;
  }
  header #header_navi > ul > li {
    display: flex;
  }
  header #header_navi > ul > li > a {
    display: flex;
    align-items: center;
    font-size: 1.6rem;
    font-weight: 500;
    position: relative;
  }
  header #header_navi > ul > li > a#header_contact::after {
    content: "";
    width: 24px;
    height: 2px;
    background: #abd3d0;
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
  }
  footer {
    padding-bottom: 40px;
  }
  footer #footer_copyright {
    text-align: center;
    font-size: 1.3rem;
    padding-left: 108px;
    letter-spacing: 0.04em;
    font-weight: 3400;
  }
}