/* background設定 */
header {
  height: 5rem;
  background: url(/img/prototype/back/prototype_bg.png) 3% 0%;
  background-size: contain;
  background-attachment: local;
  background-repeat: no-repeat;
  padding-top: 1.3rem;
}

.sec1 {
  background: url(/img/prototype/back/sabun_bg.png) 100% 10%;
  background-size: 54%;
  background-attachment: local;
  background-repeat: no-repeat;
}

.sec2 {
  background: url(/img/prototype/back/ipad_bg.png) 100% 0%;
  background-size: contain;
  background-attachment: local;
  background-repeat: no-repeat;
}

.sec3 {
  background: url(/img/prototype/back/pix_bg.png) 100% 6%;
  background-size: contain;
  background-attachment: local;
  background-repeat: no-repeat;
}

.sec4 {
  background: url(/img/prototype/back/inter_bg.png) 100% 0%;
  background-size: contain;
  background-attachment: local;
  background-repeat: no-repeat;
}

.sec5 {
  background: url(/img/prototype/back/smart_bg.png) 100% 0%;
  background-size: contain;
  background-attachment: local;
  background-repeat: no-repeat;
}

main {
  display: flex;
  width: 100%;
  justify-content: space-between;
}

/* コンテンツ */
.contents {
  width: 72%;
}

section {
  width: 100%;
  margin-bottom: 15%;
  padding-top: 3rem;
  margin-top: -3rem;
}

section:last-child {
  width: 100%;
  margin-bottom: 3%;
}

section div {
  width: 70%;
  margin-left: 7%;
}

h2 {
  letter-spacing: 0.1rem;
  font-size: min(max(3vw), 1.5rem);
  margin: 2% 0;
}

.prototype_img {
  display: block;
  width: 100%;
  filter: drop-shadow(2px 2px 3px lightgray);
}

#ipad img {
  width: 80%;
  margin: auto;
}

.describe {
  width: 100%;
  font-size: min(max(2vw), 1rem);
  line-height: 2;
  margin: 4% 0 2% 0;
}

.details {
  border: 1px solid #626262;
  font-size: min(max(1.8vw), 0.9rem);
  letter-spacing: 0.1rem;
  line-height: 2;
}

.details p {
  width: 94%;
  margin-left: 5%;
}

.details ul {
  list-style: none;
  width: 94%;
  margin: auto;
  padding: 0;
  padding-top: 3%;
  padding-bottom: 2%;
  border-bottom: 1px solid #626262;
}

.details ul li {
  padding-bottom: 1%;
  padding-left: 1.5rem;
  text-indent: -1.5em;
}

.details ul li::before {
  content: "■";
}

dl {
  width: 90%;
  margin: auto;
  margin: 3% 5%;
}

dl dl {
  width: 100%;
  display: flex;
  justify-content: space-between;
  margin: 1% 0;
}

dt {
  width: 25%;
}

dd {
  width: 75%;
  margin: 0;
  border: 1px solid/ #000;
}

.details div.pc {
  width: 95%;
  margin: auto;
}

iframe:first-child {
  margin-right: 2%;
  padding: 0;
}


/* safari */
_::-webkit-full-page-media,
_:future,
:root .main_title {
  height: 5vw;
}

_::-webkit-full-page-media,
_:future,
:root .main_title h1 {
  margin-top: -1vw;
}