@charset "utf-8";
/* CSS Document */
main {
  width: min(90%, 920px);
  display: flex;
  flex-direction: column;
  row-gap: clamp(40px, 8vw, 80px);
  padding: clamp(80px, 15vw, 140px) 0 clamp(100px, 15vw, 180px);
  margin: auto;
}
.sec-lead h2 {
  font-size: clamp(3.4rem, 8vw, 6.0rem);
  letter-spacing: 0.2rem;
}
.sec-lead p {
  font-size: clamp(1.6rem, 2.4vw, 2.2rem);
  font-weight: bold;
}
.rogo_pic>img {
  width: 50%;
}
.txt {
  font-size: clamp(1.4rem, 2.3vw, 2.0rem);
}
.link-btn {
    display: flex;
    flex-direction: column;
    gap: 30px;
    align-items: center;
}
.link-btn a {
    display: block;
    width: min(100%, 460px);
    text-align: center;
    font-size: clamp(1.8rem, 1.3vw, 2.0rem);
    font-weight: bold;
    position: relative;
    padding: 1rem 24px 2rem 6px;
    background: #f1f1f1;
    transition: 0.2s ease-in-out;
}
.link-btn a::before {
    content: '';
    position: absolute;
    top: -5px;
    left: -5px;
    width: calc(100% - 4px);
    height: calc(100% - 1px);
    border: 1px solid #333;
    transition: 0.2s;
}
/* ============== TAB(600px)レスポンシブ ============== */
@media only screen and (min-width:600px) {
  .link-btn a:hover {
    background: #333;
    color: #fff;
  }
  .link-btn a:hover::before {
    top: 0;
    left: 0;
  }
 }