@charset "utf-8";
body {
  font-size: 15px;
  letter-spacing: 0.04em;
  line-height: 1.6;
  color: #575f6b;
}
h1 {
  margin: 0 auto;
}
h2 {
  font-weight: 700;
  letter-spacing: 0.1em;
  color: red;
}
h2::after {
  content: "";
  display: block;
  background: red;
  width: 24px;
  height: 4px;
  margin-top: 10px;
}
h3 {
  font-weight: 400;
  letter-spacing: 0.5px;
}
.gray {
  background: linear-gradient(90deg, #f8f8fc, #e1e2e8);
}
.mt {
  position: relative;
}
.mt iframe {
  position: absolute;
  top: 0;
  width: 100%;
  height: 100%;
}
.column-2 {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
}
.column-2 .reverse {
  flex-flow: column-reverse;
}
.youtube-box {
  position: relative;
  padding-bottom: 56.25%;
}
.youtube-box iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}
.txt a {
  letter-spacing: 0.5px;
  border-bottom: 1px solid #3166ce;
  color: #3166ce;
}
.txt a:hover {
  border-bottom: none;
}
@media all and (min-width: 751px) {
 h1 {
   width: 540px;
 }
 h2 {
   margin-bottom: 20px;
   font-size: 2rem;
 }
 h3 {
   font-size: 20px;
 }  
 .txt h2 {
    margin-bottom: 15px;
 }
 .mt {
   padding-top: 586px;
 }
 .mv, .pic-1 {
   width: 590px;
 }
 .pic-2 {
   width: 450px;
 }
 .txt {
   width: 40%;
 }
 .txt a {
   font-size: 16px;
 }
 .txt p:not(:last-of-type) {
  margin-bottom: 10px;
 }
}
@media screen and (max-width:750px) {
 h1 {
    width: 90%;
    max-width: 400px;
 }
 h2 {
    margin-bottom: 20px;
 }
 .txt a img {
    width: 18px;
 }
 .column-2 div:not(:last-of-type) {
    margin-bottom: 20px;
  } 
 .mt {
   padding-top: 100%;
 }
 .mv, .pic-1, .pic-2, .txt {
    width: 100%;
  }
  .link {
    margin-top: 10px;
  }
}