@charset "UTF-8";

/* 共通 */
html {
  font-size: 100%;
}

body {
  font-family: 'Noto Sans JP', 'Montserrat', sans-serif;
}

a {
  text-decoration: none;
  color: #FFFFFF;
}

img {
  max-width: 100%;
}

li {
  list-style: none;
}

.header {
  margin: 0 auto;
  width: 100%;
  background-size: 100%;
  height: 50vh;
  background-image: url(../img/img_PC.png);
  /* 画像の表示位置を指定 */
  background-position: 70% 80%;
  background-repeat: no-repeat;
  position: relative;
  margin-bottom: 5%;
}

/* メインビジュアルをクリック可能にする */
.header a {
  display: block;
  width: 100%;
  height: 100%;
  position: absolute;
  top: 0;
  left: 0;
  z-index: 10;
}

.header__top {
  position: absolute;
  right: 9%;
  top: -10%;
  color: white;
  font-size: 9rem;
  transform: translate(9%, -10%);
  visibility: hidden;
}

/* 共通のコンテンツ幅設定クラス */
.wrapper {
  padding: 0%;
  max-width: 1800px;
  margin: 0 auto;
}

.group {
  display: flex;
  flex-direction: column;
  margin-bottom: 2%;
}

.group__title {
  font-size: 2em;
  margin: 0;
  padding: 0;
}

.group__subtitle {
  font-size: 1.2rem;
  margin: 0;
}

.underline {
  width: 30%;
  height: 1vh;
  margin: 10px 0;
  background: linear-gradient(to right, black, white);
}

.underline--flex {
  width: 90%;
  height: 1vh;
  margin: 10px 0;
  background: linear-gradient(to right, black, white);
}

.flex {
  display: flex;
}

.text p {
  width: 85%;
  font-size: 1.5rem;
}

.about {
  margin-bottom: 5%;
}

.labs {
  margin-bottom: 5%;
  margin-right: 5%;
  width: 33%;
}

.contents {
  display: flex;
  justify-content: space-around;
}

.contents__text {
  width: 68%;
  font-size: 1.3rem;
}

.talks {
  margin-bottom: 5%;
  margin-right: 5%;
  width: 33%;
}

.articles {
  margin-bottom: 5%;
  margin-right: 5%;
  width: 33%;
}

.links {
  margin-bottom: 5%;
}

.container {
  display: flex;
  justify-content: flex-start;
  gap: 3%;
  margin: 0 auto;

}

.container__item {
  flex: 1;
  display: flex;
  width: 85%;
}

.logo-1 img {
  max-width: 100%;
  height: auto;
}

.logo-2 img {
  max-width: 100%;
  height: auto;
}

.logo-3 img {
  max-width: 100%;
  height: auto;
}

.box {
  width: 20%;
  height: 28vh;
  background-color: white;
  box-shadow: 4px 4px 6px rgba(0, 0, 0, 0.6);
}

.policy {
  display: flex;
  justify-content: flex-start;
  padding: 1% 5%;
}

.policy__item {
  margin-right: 4%;
}

.footer {
  
  background-color: black;
  color: #e9e9e9;
  padding: 0 0 1% 0%;
}

.footer p {
  text-align: right;
  margin: 1%;
  
}

.footer__icons {
  display: flex;
  justify-content: flex-start;
  width: 100%;
}

.icon {
  width: 30%;
  padding: 0;
}

.icon img {
  max-width: 100%;
}

img.img_talks {
  margin-top: 10%;
  max-width: 80%;
}

img.img_articles {
  max-width: 107%;
}

.x-icon {
  width: 7%;
  margin-right: 5%;
}

.linkedin-icon {
  width: 7%;
  margin-right: 5%;
}

.mail-icon {
  width: 7%;
}

.contents {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.button {
  display: inline-block;
  padding: 10px 20px;
  color: white;
  background-color: transparent;
  border: 2px solid white;
  text-decoration: none;
  font-size: 4rem;
}

.contact-group {
  padding: 0 2%;
}

.contact-group__title {
  font-size: 2rem;
}

.main-wrapper {
  padding: 5% 5% 0 5%;
}
/* 
追加
*/
.linkedin-icon a {
  width: 100% !important;
}
.linkedin-icon a img{
  width: 100%;
}


/* 
レスポンシブ
*/

@media screen and (max-width: 940px) {
  /*  メイン画像 */
  .header {
    width: 100%;
    background-image: url(../img/img_SP.png);
    /* 画像の表示位置を指定 */
    background-size: 100%;
    background-position: 90% 0%;
    background-repeat: no-repeat;
    position: relative;
    height: 65vh;
  }

  .flex {
    flex-direction: column;
  }

  .header__top {
    right: 10%;
    top: 5%;
    font-size: 6rem;
    transform: translate(10%, 5%);
  }

  .group {
    text-align: center;
  }

  .underline {
    width: 100%;
  }

  .underline--flex {
    width: 100%;
  }

  .contents {
    flex-wrap: nowrap;
  }

  .text p {
    text-align: center;
    margin: 0 auto;
    font-size: 1.3rem;
  }

  .contents__text {
    font-size: 1.5rem;
  }

  .about {
    margin-bottom: 5%;
  }

  .labs {
    width: 100%;
    margin-bottom: 5%;
  }

  .talks {
    width: 100%;
    margin-bottom: 5%;
  }

  .articles {
    width: 100%;
    margin-bottom: 10%;
  }


  /* footer icon */
  .x-icon {
    width: 15%;
    margin-right: 5%;
  }

  .linkedin-icon {
    width: 15%;
    margin-right: 5%;
  }

  .mail-icon {
    width: 15%;
    margin-right: 5%;
  }

  .footer p {
    font-size: 0.8rem;
  }

  .policy__item {
    font-size: 0.8rem;
  }

  .policy {
    padding: 3% 4%;
  }

  .contents__text {
    text-align: center;
  }

  .footer__icons {
    width: 60%;
  }
}

@media screen and (max-width: 840px) {
  .header {
    height: 56vh;
}
}

@media screen and (max-width: 735px) {
  .header {
    height: 49vh;
}
}

@media screen and (max-width: 600px) {
  .header {
    height: 39vh;
}
}

@media screen and (max-width: 450px) {
  .header {
    height: 32vh;
}
}


@media screen and (max-width: 350px) {
  .header {
    height: 22vh;
}

}