@charset "UTF-8";
body, h1, h2, h3, h4, p, figure, blockquote, dl, dd {
  margin: 0;
}

.clearfix:before {
  content: " ";
  display: table;
}
.clearfix:after {
  content: " ";
  display: table;
  clear: both;
}

@media screen\0  {
  #content {
    font-family: "メイリオ", Meiryo, sans-serif;
  }
}
body {
  margin: 0;
  padding: 0;
  width: 100%;
  /*overflow-x: hidden;*/
  font-family: "游ゴシック体", YuGothic, "游ゴシック Medium", "Yu Gothic Medium", "游ゴシック", "Yu Gothic", sans-serif;
  margin: 0;
}

#header {
  width: 100%;
  text-align: center;
}
#header img {
  max-width: 100%;
  height: auto;
}

/*++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++*/
.container {
  font-family: "Noto Sans JP", sans-serif;
  width: 100%;
  height: auto;
  color: #262626;
  font-size: 15px;
  font-weight: 400;
  background-color: #262626;
}
.container img {
  width: 100%;
  display: block;
}
.container a {
  text-decoration: none;
}
.container p {
  letter-spacing: 0.025em;
}

.mv_wrap {
  background-image: url(main_img.webp);
  background-repeat: no-repeat;
  background-size: 100%;
  background-color: #262626;
}
.mv_wrap .main_ttl {
  width: 90%;
  margin: 0 auto;
  padding: 54% 0 0;
}
.mv_wrap .main_ttl .h1_sub {
  width: 100%;
  margin: 0 auto 10px;
}
.mv_wrap .main_ttl .h1_main {
  filter: drop-shadow(0 0 3px rgba(0, 0, 0, 0.5));
}
.mv_wrap .lead {
  width: 90%;
  margin: min(10%, 60px) auto 0;
  padding-bottom: min(5%, 50px);
  color: #fff;
  line-height: 2;
}

section {
  overflow: hidden;
}
section.bg_black {
  color: #fff;
}
section.bg_black .line {
  background-color: #808080;
}
section.bg_white {
  color: #262626;
  background-color: #f1f1f1;
}
section.bg_white .line {
  background-color: #ccc;
}
section .deco {
  position: absolute;
  z-index: -1;
  background-image: url(particle.png);
  background-size: cover;
  aspect-ratio: 1/1;
  width: min(50vw, 400px);
}
section .deco.deco1 {
  top: 0;
  right: -15%;
}
section .deco.deco2 {
  top: 45%;
  left: -15%;
  width: min(50vw, 300px);
}
section .deco.deco3 {
  top: 90%;
  right: -15%;
}
section.sec2 .deco {
  background-image: url(particle_2.png);
}
section.sec3 .deco.deco3 {
  top: 70%;
}
section.sec3 .deco.deco4 {
  top: 90%;
  left: -25%;
  width: min(50vw, 300px);
}
section .sec_inner {
  width: min(90%, 740px);
  margin: 0 auto;
  padding: 70px 0;
  position: relative;
  z-index: 10;
}
section .sec_inner h2 {
  padding-bottom: 7%;
}
section .sec_inner h2 img {
  width: min(100%, 450px);
}
section .sec_inner .line {
  display: block;
  width: 100%;
  height: 1px;
  margin-bottom: 10%;
}
section .sec_inner > p {
  line-height: 2;
  text-indent: 1em;
}
section .sec_inner > p.indent2 {
  text-indent: 0.5em;
}
section .sec_inner > p + p {
  margin-top: 1.7em;
}
section .sec_inner .img_box {
  width: 100%;
  margin: 60px auto;
}
section .sec_inner .img_box.img_bottom {
  margin-bottom: 0;
}
section .sec_inner .speaker img {
  width: calc(100% - 5px);
  filter: drop-shadow(5px 5px 0 #ffd632);
}
section .sec_inner .speaker.speaker2 img {
  margin: 0 0 0 auto;
  filter: drop-shadow(-5px 5px 0 #ffd632);
}
section .sec_inner .speaker .prof {
  margin-top: calc(1em + 5px);
}
section .sec_inner .speaker .prof p {
  line-height: 1;
  width: -moz-fit-content;
  width: fit-content;
}
section .sec_inner .speaker .prof p + p {
  margin-top: 0.8em;
}
section .sec_inner .speaker .prof p.flow {
  display: inline-block;
}
section .sec_inner .speaker .prof p.flow + .flow {
  margin-left: 0.25em;
}
section .sec_inner .speaker .prof p.name {
  font-size: 21px;
  font-weight: 600;
  line-height: 1.2;
}
section .sec_inner .speaker .prof p.name small {
  font-size: 14px;
  margin-left: 0.25em;
  font-weight: 500;
}
section .sec_inner .cap p {
  font-size: 13px;
  line-height: 1.7;
  margin-top: 1.5em;
}

.foot_wrap {
  background-color: #f1f1f1;
  padding: 70px 0;
}
.foot_wrap > p {
  text-align: center;
  font-size: clamp(15px, 5vw, 20px);
  color: #333;
}
.foot_wrap a {
  display: flex;
  justify-content: center;
}
.foot_wrap a:nth-of-type(1) {
  width: min(90%, 300px);
  margin: 40px auto;
}
.foot_wrap a:nth-of-type(2) {
  width: -moz-fit-content;
  width: fit-content;
  margin: 1em auto 0;
  padding: 2.5px 15px;
  background-color: #ffd632;
  color: #333;
  border-radius: 8px;
}
.foot_wrap a:nth-of-type(2)::after {
  content: "→";
  font-size: 18px;
  margin-left: 0.5em;
}

@media screen and (min-width: 641px) {
  .mv_wrap {
    max-width: 1400px;
    margin: 0 auto;
  }
  .mv_wrap .main_ttl {
    width: min(48%, 650px);
    padding-top: 27.5%;
  }
  .mv_wrap .main_ttl .h1_sub {
    width: 95%;
    margin-bottom: 2.5%;
  }
  .mv_wrap .lead {
    text-align: center;
  }
  .mv_wrap .lead span {
    display: block;
  }
  section .deco.deco1 {
    top: 0;
    right: -25%;
  }
  section .deco.deco2 {
    top: 45%;
    left: -25%;
  }
  section .deco.deco3 {
    top: 70%;
    right: -25%;
  }
  section.sec3 .deco.deco2 {
    top: 35%;
  }
  section.sec3 .deco.deco3 {
    top: 57%;
  }
  section .sec_inner {
    padding: 100px 0;
  }
  section .sec_inner h2 {
    padding-bottom: 30px;
  }
  section .sec_inner h2 img {
    width: auto;
    height: 65px;
  }
  section .sec_inner .line {
    margin-bottom: 40px;
  }
  section .sec_inner .img_box {
    width: 90%;
    margin: 80px auto 85px;
  }
  section .sec_inner .speaker {
    position: relative;
  }
  section .sec_inner .speaker img {
    width: calc(100% - 10px);
    filter: drop-shadow(10px 10px 0 #ffd632);
  }
  section .sec_inner .speaker.speaker2 img {
    filter: drop-shadow(-10px 10px 0 #ffd632);
  }
  section .sec_inner .speaker.speaker2 .prof {
    left: inherit;
    right: 50px;
  }
  section .sec_inner .speaker .prof {
    position: absolute;
    top: 45%;
    transform: translateY(-50%);
    left: min(7%, 50px);
  }
  section .sec_inner .speaker .prof p {
    background-color: #f9fbfa;
    color: #262626;
  }
  section .sec_inner .speaker .prof p.flow {
    display: block;
  }
  section .sec_inner .speaker .prof p.flow + .flow {
    margin-left: 0;
  }
  section .sec_inner .speaker .prof p + p {
    margin-top: 0.5em;
  }
  section .sec_inner .speaker .prof p span {
    display: block;
  }
  .foot_wrap a {
    transition: 0.4s;
  }
  .foot_wrap a:nth-of-type(1):hover {
    opacity: 0.5;
  }
  .foot_wrap a:nth-of-type(2):hover {
    background-color: #262626;
    color: #f1f1f1;
  }
}