@charset "utf-8";

* {
  margin: 0;
  padding: 0;
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box;
}

html {
  -ms-text-size-adjust: 100%;  /* IE on Windows Phone用 */
  -webkit-text-size-adjust: 100%;  /* iOS用 */
  scroll-behavior: smooth;
  font-size: 62.5%;
}

body {
  font-family: ten-mincho, serif;
  font-style: normal;
  font-weight: 400;
  font-size: 1.5rem;
  line-height: 1.8em;
  color: #707070;
}

@media only screen and (max-width:1080px) { /* 大画面 */

}
h1, h2, h3, h4, h5, h6 {
  font-weight: normal;
}

li {
  list-style: none;
}

section {
  width: 100%;
}

header {
  text-align: center;
}

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

header h1 {
  font-size: 3.5rem;
  line-height: 1em;
  letter-spacing: 0.35em;
  font-weight: normal;
  margin: 6em 0 0.8em 0;
}

header p {
  font-size: 1.4rem;
  line-height: 1em;
  letter-spacing: 0.05em;
  margin-bottom: 10em;
}

header img {
  width: 70%;
  max-width: 630px;
  margin-bottom: 160px;
}

@media only screen and (max-width:1080px) { /* 大画面 */
  header h1  {
    font-size: 2.8rem;
  }

  header p {
    font-size: 1.1rem;
  }

  header img {
    margin: 0 15% 120px 15%;
  }

  .about h2 {
    font-size: 2rem;
  }
}

.about {
  text-align: center;
  margin-bottom: 4.5em;
}

.about h2 {
  font-size: 2.2rem;
  line-height: 1em;
  margin-bottom: 4em;
  letter-spacing: 0.1em;
}

@media only screen and (max-width:1080px) { /* 大画面 */
  .about h2 {
    font-size: 2rem;
  }
  .about p {
    font-size: 1.3rem;
  }
}
.contact {
  margin-bottom: 10em;
}

.contact ul{
  display: flex;
  justify-content: center;
  gap: 3em;
}

.contact span{
  font-size: 1.3rem;
}

@media only screen and (max-width:720px) { /* 大画面 */
  .contact ul{
    display: block;

  }
  .contact ul li {
    margin: 0 auto 2em auto;

  }
}

.bio, .office {
  max-width: 1080px;
  margin: 0 auto 8em auto;
}

.bio h3, .office h3 {
  font-size: 1.9rem;
  letter-spacing: 0.05em;
  margin-bottom: 3em;
}

.bio span, .office span {
  font-size: 1.3rem;
  line-height: 1.7em;
}

.bio .flex {
  display: flex;
  justify-content: flex-start;
  gap: 4em;
}

@media only screen and (max-width:1080px) { /* 大画面 */
  .about {
    margin-left: auto;
    margin-right: auto;
  }
  .about, .bio, .office {
    width: 80%;
  }

  .bio .flex {
    display: block;
  }

  .bio .flex div {
    margin-bottom: 4em;

  }

  .bio span, .office span {
    font-size: 1.25rem;
    line-height: 1.7em;
  }
}

.office p {
  margin-bottom: 2em;
}
footer small {
  font-size: 1.3rem;
  display: block;
  width: 100vw;
  text-align: center;
  color: #A5A5A5;
  margin-bottom: 5em;
}

.en {
  letter-spacing: 0.02em;
}


h3 {
  margin-left: -4em;
}
h3::before{
  display: inline-block;
  content: '';
  width: 3em;
  height: 1px;
  background-color: #CBCBCB;
  position: relative;
  top: -0.3em;
  left: 0;
  margin-top: 0px;
  margin-right: 1em;

}


@media only screen and (max-width:1080px) { /* 大画面 */
  h3::before{
    background-color: #FFF;
  }
}

.border-btn li {
  max-width: 200px;
}
@media only screen and (max-width:720px) { /* 大画面 */
  .border-btn li a {
    display: block;
    width: 180px;
  }
}
.border-btn li a {
  max-width: 200px;
  text-align: center;
  border: 1px solid #CBCBCB;
  padding: 8px 25px;
  transition: 0.3s;
}

.border-btn li a:hover {
  color: #FFFFFF;
  background-color: #555555;
}

.border-btn span {
  letter-spacing: 0.05em;

}

.border-btn span::before{
  display: inline-block;
  content: '';
  width: 7px;
  height: 7px;
  border: 0px;
  border-top: solid 1px #555555;
  border-right: solid 1px #555555;
  -ms-transform: rotate(45deg);
  -webkit-transform: rotate(45deg);
  transform: rotate(45deg);
  position: relative;
  top: -1px;
  left: 0;
  margin-top: 0px;
  margin-right: 15px;
}

.border-btn li:last-child span {
  margin-left: 15px;
}

.border-btn li:last-child span::before{
  display: none;
}