/* background設定 */
header {
  background: url(/img/prototype/mobile/prototype_bg.png) 0% 0%;
  background-size: 35%;
  background-attachment: local;
  background-repeat: no-repeat;
  width: 100%;
  height: 33vw;
  padding-top: 5rem;
  margin-top: calc(55px + 8vw);
}

aside {
  margin-top: -17%;
  width: 100%;
  padding-top: 1%;
  background: url(/img/prototype/mobile/dropdown_bg.png) 100% 0;
  background-size: 75%;
  background-attachment: local;
  background-repeat: no-repeat;
}

.sec1 {
  background: url(/img/prototype/mobile/sabun_bg.png) 100% 42%;
  background-size: 70%;
  background-attachment: local;
  background-repeat: no-repeat;
}

.sec2 {
  background: url(/img/prototype/mobile/ipad_bg.png) 100% 28%;
  background-size: 100%;
  background-attachment: local;
  background-repeat: no-repeat;
}

.sec3 {
  background: url(/img/prototype/mobile/pix_bg.png) 100% 10%;
  background-size: 100%;
  background-attachment: local;
  background-repeat: no-repeat;
}

.sec4 {
  background: url(/img/prototype/mobile/inter_bg.png) 100% 5%;
  background-size: 100%;
  background-attachment: local;
  background-repeat: no-repeat;
}

.sec5 {
  background: url(/img/prototype/mobile/smart_bg.png) 100% 15%;
  background-size: 100%;
  background-attachment: local;
  background-repeat: no-repeat;
}

h2 {
  font-size: 1.8rem;
}

.main_title {
  width: 85%;
  height: 1.2rem;
  padding-top: 2.4rem;
  padding-left: 0.5rem;
  margin: auto;
  margin-top: -3rem;
  margin-bottom: 7rem;
  border-left: 0.7rem solid black;
}

.main_title small {
  font-size: 1rem;
  margin: 0;
  text-shadow: 0 0 1px #777;
  letter-spacing: 0.1rem;
}

.main_title h1 {
  margin: 0;
  margin-top: 0.3rem;
  font-size: 2.57rem;
  font-weight: normal;
  text-shadow: 0 0 1px black;
  letter-spacing: 0.1rem;
  display: flex;
  justify-content: space-between;
}

[v-cloak] {
  display: none;
}

.side_btn {
  position: absolute;
  font-size: 2.5rem;
  right: 5%;
  top: calc(55px + 26vw);
}

.side_menu {
  width: 65%;
  list-style: none;
  margin: 0;
  margin-left: 20%;
  margin-top: 20%;
  padding: 0;
}

.side_menu li {
  padding: 10% 0;
  font-size: 1.2rem;
  letter-spacing: 0.1rem;
  text-shadow: 0 0 1px #666;
  display: block;
  display: flex;
  justify-content: space-between;
  cursor: pointer;
}

.side_menu li::after {
  content: "▼";
}

section {
  width: 100%;
  margin: auto;
  margin-bottom: 20vw;
  overflow: hidden;
  padding-top: calc(55px + 3vw);
  margin-top: calc(-55px - 3vw);
}

section div {
  width: 90%;
  margin: auto;
}

section img {
  width: 100%;
  filter: drop-shadow(2px 2px 3px lightgray);
}

.describe {
  font-size: 1rem;
  letter-spacing: 0.1rem;
  line-height: 2;
  margin: 5vw 0;
}

.details {
  width: 85%;
  font-size: 0.9rem;
  letter-spacing: 0.1rem;
  border: 1px solid #626262;
  padding: 0.2rem 1rem;
}

.details ul {
  border-bottom: 1px solid #626262;
  padding: 0;
  list-style: none;
  padding-left: 0%;
  padding-bottom: 2%;
}

.details ul li {
  line-height: 2;
  padding-left: 1.5rem;
  text-indent: -1.5em;
}

.details ul li::before {
  content: "■";
  font-size: 1.2rem;
  margin-right: 0.1rem;
}

#ipad .title_img {
  margin-top: 13vw;
}

#pix .title_img {
  margin-top: 15vw;
}

#inter .title_img {
  margin-top: 20vw;
}

#smart .title_img {
  margin-top: 23vw;
}

#ipad img {
  width: 86%;
  display: block;
  margin: auto;
}

dl dl {
  display: flex;
  justify-content: space-between;
  margin: 4vw 0;
  font-size: 0.9rem;
}

dt {
  width: 10rem;
}

dd {
  width: 24rem;
  margin: 0;
}

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

iframe:first-child {
  margin-bottom: 2vw;
}