:root {
  --padding-block-large: 160px;
  --h1-size: 32px;
  --main-font: "Noto Serif JP", serif;
  --sub-font: "Playfair Display", serif;
  --h2-size: calc(var(--h1-size) * 0.9);
  --h3-size: calc(var(--h2-size) * 0.75);
  --color-background: #fafaf8;
  --color-text: #333333;
  --color-heading: #1c2b2d;
  --color-accent: #a89f91;
  --color-border: #d8d4cf;
}

html {
  scroll-behavior: smooth;
}

main {
  background-color: var(--color-background);
  color: var(--color-text);
  font-family: var(--main-font);
  line-height: 1.85;
  letter-spacing: 0.05em;
}

main img {
  width: 100%;
  height: auto;
}

main section:not(#towns) > *:not(h1, h2, h3) {
  padding-bottom: calc(var(--padding-block-large) * 0.85);
}

main hr {
  width: 50%;
  margin-top: calc(var(--padding-block-large) / 2);
  margin-bottom: var(--padding-block-large);
}

main h1,
main h2,
main h3 {
  margin-bottom: 1.25em;
  color: var(--color-heading);
  letter-spacing: 0.15em;
  text-align: center;
}

main h1 {
  font-size: var(--h1-size);
  font-family: var(--sub-font);
}

main h2 {
  font-size: var(--h2-size);
  font-weight: 600;
}

main h3 {
  font-size: var(--h3-size);
}

main a {
  color: var(--color-accent);
}

main .nowrap span {
  white-space: nowrap;
}

main .text > * {
  margin-bottom: 0.85em;
}

main .flex {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-evenly;
  align-items: center;
}

main .flex img {
  display: block;
  height: 100%;
  object-fit: cover;
}

main .btn {
  text-align: center;
}

main .btn a {
  display: inline-block;
  padding: 0.5em 1em;
  background-color: var(--color-accent);
  color: white;
  text-decoration: none;
  border-radius: 4px;
  transition: opacity 0.3s 0s ease-in-out;
}

main .btn a:hover {
  opacity: 0.5;
}

main #hero {
  margin-bottom: calc(var(--padding-block-large) * 0.85);
  overflow: hidden;
}

main #hero img {
  padding: 0 !important;
}

main #hero .text {
  text-align: left;
  padding: 0 !important;
}

main #lead {
  max-width: 1200px;
  margin-inline: auto;
}

main #lead .flex > * {
  flex: 0 0 48%;
}

main #lead .map-img {
  img {
    border: 1px solid var(--color-text);
    display: block;
    height: 100%;
    object-fit: cover;
  }
}

main #lead .text {
  padding-inline: 1%;
}

main #towns {
  padding-block: 3%;
}

main #towns .swiper {
  width: 100%;
  margin-bottom: 3em;
  overflow: hidden;
}

main #towns .swiper-slide img {
  width: 100%;
  display: block;
  object-fit: cover;
}

#gallery {
  max-width: 1980px;
  margin-top: calc(var(--padding-block-large) * 2);
  margin-inline: auto;
}

#gallery .flex {
  flex-wrap: wrap;
}

#gallery .flex > * {
  margin-bottom: 2%;
  flex: 0 0 31%;
}

.case-box {
  margin-inline: 2%;
  padding: 5%;
  background-color: white;
}

.case-box .img {
  margin-top: 5%;
}

footer {
  margin-top: 0;
}

/* 768px以上の場合にマッチ */
@media screen and (min-width: 768px) {
  :root {
    --padding-block-large: 120px;
    --h1-size: 28px;
    --jump-point: 198px;
  }

  .fit-center {
    text-align: center;
    margin-inline: auto;
  }

  main h1{
    text-align: left;
  }

  #hero {
    padding-inline: 5%;
    width: 100%;
    height: calc(100vh - 198px);
    display: flex;
    gap: 6%;
    justify-content: center;
    align-items: center;
  }

  #hero > * {
    flex-shrink: 1;
  }

  #hero img {
    max-width: 973px;
    max-height: 700px;
    width: auto;
    height: 100%;
    flex-shrink: 3;
  }

  #towns .swiper-slide {
    width: 28%;
  }

  #casestudies {
    margin-inline: auto;
    max-width: 1200px;
  }

  #casestudies figure .logo-img {
    flex: 0 0 25%;
  }

  #casestudies figure figcaption {
    padding-inline: 5%;
    flex: 0 0 65%;
  }

  #casestudies .img > * {
    flex: 0 0 23%;
  }
}

/* 768よりも小さい場合にマッチ */
@media not screen and (min-width: 768px) {
  :root {
    --padding-block-large: 80px;
    --h1-size: 26px;
    --jump-point: 103px;
  }

  section:not(#towns) {
    padding-inline: 5%;
  }

  main h1 {
    margin-top: 1.25em;
  }

  h1,
  h2,
  h3 {
    text-align: center;
    line-height: 1.5;
  }

  .fit-center {
    text-align: left;
  }

  .flex {
    flex-direction: column;
    align-items: center;
    justify-content: center;
  }

  #lead .map-img {
    margin-bottom: calc(var(--padding-block-large) * 0.5);
  }

  #hero {
    width: 100%;
    height: auto;
  }

  #hero img {
    object-fit: cover;
    object-position: top center;
  }

  #towns .swiper-slide {
    width: 80%;
  }

  #casestudies figure .logo-img img {
    width: 15em;
  }

  #casestudies .img {
    flex-direction: row;
    gap: 1%;
  }

  #casestudies .img > * {
    flex: 0 0 48%;
    margin-bottom: 2.5%;
  }
}

.jump-point {
  padding-top: var(--jump-point);
  margin-top: calc(var(--jump-point) * -1);
}