/* 共通 */
:root {
  --main: #ffd964;
  --strong: #372a28;
  --complementary: #946c09;
  --gradient: linear-gradient(145deg, #000000, #54383814);
  --shadow: 2px 2px 2px #858585, -2px -2px 2px #e8e8e8;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  /*font-family: "Noto Serif JP", serif;*/
  font-family: "Arial";
  font-weight: 400;
  font-style: normal;
  color: var(--strong);
  background: #EDEDED;
  /* background-image: url(
  /statics/img/background_body.png); */
  /* background-size: cover; */
  /* background-attachment: fixed; */
}
body > div {
  max-width: 100vw;
  overflow-x: hidden;
}
header {
  /* position: relative; */
  /* width: 98vw; */
  /* overflow-x: hidden; */
}

body:after {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 0vh;
  background: #000000;
  color: white;
  font-size: 7.5vw;
  display: inline-flex;
  justify-content: center;
  align-items: center;
  overflow: hidden;
  transition: 1s;
  z-index: 5;
}
body.loading:after, body.network_error:after {
  height: 100svh;
}
body.loading:after {
  content: '';
}

div.loading {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 90px;
  height: 45px;
  box-shadow: 0 3px 0 #fff;
  color: white;
  clip-path: inset(-40px 0 -5px);
  display: inline-flex;
  align-items: flex-end;
  z-index: 6;
}
div.loading:before {
  content: '';
  position: absolute;
  inset: auto calc(50% - 17px) 0;
  height: 50px;
  --g:no-repeat linear-gradient(var(--main) 0 0);
  background: var(--g),var(--g),var(--g),var(--g);
  background-size: 16px 14px;
  animation:
    l7-1 2s infinite linear,
    l7-2 2s infinite linear;
}
div.loading:after {
  content: 'Wait a minute';
}
@keyframes l7-1 {
  0%,
  100%  {background-position: 0 -50px,100% -50px}
  17.5% {background-position: 0 100%,100% -50px,0 -50px,100% -50px}
  35%   {background-position: 0 100%,100% 100% ,0 -50px,100% -50px}
  52.5% {background-position: 0 100%,100% 100% ,0 calc(100% - 16px),100% -50px}
  70%,
  98%  {background-position: 0 100%,100% 100% ,0 calc(100% - 16px),100% calc(100% - 16px)}
}
@keyframes l7-2 {
  0%,70% {transform:translate(0)}
  100%  {transform:translate(200%)}
}

body.network_error:after {
  content: 'ネットワークに接続されていません';
  font-size: 5vw;
}
label.sending {
  color: transparent!important;
}
label.sending:after {
  content: '通信中';
  position: absolute;
  color: white;
  filter: drop-shadow(0 0 2px #858585)drop-shadow(0 0 5px #858585)drop-shadow(0 0 10px #858585);
}

section {
  text-align: center;
  font-size: min(3.5vw, 1.5em);
  margin: 0;
  padding: 20px 0;
}
section:nth-child(even) {
  background: var(--strong);
  color: white;
}
section img {
  width: 100%;
  max-width: 500px;
  /* border-radius: 50%; */
  /* box-shadow: var(--shadow); */
}
ul, ol {
  list-style: none;
  margin: 0;
  padding: 0;
}
h1 {
  text-decoration: underline solid 1.5px var(--main);
}
a {
  text-decoration: none;
  color: var(--main);
}
/*
small {
	color: #858585;
}
*/
img {
  max-width: 80vw;
}

.conspicuous_btn {
  background: var(--main)!important;
  color: white!important;
}

.off_display {
  display: none!important;
}

footer {
  text-align: center;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  align-content: center;
}

/* ヘッダー */

/* 20241003 Yudai - add start */
.header {
  position: fixed;
  width: 100%;
  height: 100svh;
  padding: 10px 0;
  display: flex;
  flex-wrap: wrap;
  flex-direction: row;
  justify-content: center;
  align-items: center;
  background: var(--main);
  /* color: var(--main); */
  text-align: center;
  box-shadow: 3px 3px 3px #b7b7b7;
  overflow: hidden;
  transition: 1s;
  z-index: 1;
  align-content: center;
}
.header * {
  /* transition: 1s; */
}
.header > div {
  display: inline-flex;
  flex-direction: row;
  align-content: center;
  align-items: center;
  justify-content: center;
}
.header > div:nth-child(3) {
  width: fit-content;
  display: inline-flex;
  flex-direction: column;
  flex-wrap: wrap;
}
.header small {
  color: var(--complementary);
}
.header a {
  background: var(--strong);
  padding: 2.5px 10px;
  border-radius: 100px;
}
.header .section_index ul li {
  padding: 0 5px;
}
.header .section_index a {
  background: var(--complementary);
  box-shadow: none;
  color: white;
  text-decoration: underline var(--strong);
}

.header.fixed {
  position: fixed;
  height: 50px;
}
.header.fixed > * {
  flex-direction: row !important;
}
.header.fixed .disabled {
  width: 0;
  height: 0;
  overflow: hidden;
  opacity: 0;
  /* margin: 0; */
  /* margin-bottom: 10px; */
  margin: 0 10px;
  padding: 0;
}
.header .disabled {
  height: 100%;
}
.header.fixed div:has(img) {
  width: 0;
  height: 0;
  display: none;
}
.header div img {
  width: 50%;
  height: 50%;
}
/* 20241003 Yudai - add end */

header p, header small {
  /* color: white; */
}
.header_img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100vw;
  height: auto;
  z-index: -1;
}
.header_img img {
  width: 100%;
  height: auto;
}
.background_filter {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, #623838db, #62383847), linear-gradient(0deg, #623838 5%, #62383800 20%);
}
.header_text {
  font-size: 2rem;
  text-align: center!important;
  display: block;
}
.left {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
}
.left img {
  filter: drop-shadow(0 0 5px #ffffff50);
}
.about {
  display: flex;
  flex-direction: row;
  align-items: center;
  flex-wrap: wrap;
  justify-content: center;
}
.about p {
    margin: 10px;
    padding: 15px 30px;
    background: white;
    color: black;
    border-radius: 50px;
}


/* モーダル */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100svh;
  background: #00000085;
  visibility: hidden;
  opacity: 0;
  transition: .3s;
  z-index: 2;
}

/*
.modal > div {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  max-width: 75vw;
  max-height: 75vh;
  padding: 15px;
  background: white;
  border-radius: 5px;
  overflow: scroll;
  scroll-snap-type: x mandatory;
}
.modal .close {
	position: absolute;
  top: 0;
  right: 0;
  border: 0;
  padding: 10px;
  background: initial;
}
*/

.on_display {
	visibility: visible;
	opacity: 1;
}

/*スクロールバー全体*/
::-webkit-scrollbar {
  /* width: 10px; */
}

/*スクロールバーの軌道*/
::-webkit-scrollbar-track {
  /* opacity: 0; */
}

/*スクロールバーの動く部分*/
::-webkit-scrollbar-thumb {
  /* background: #858585; */
  /* border-radius: 50px; */
}



/* お問い合わせ訴求ボタン */
.contact {
  position: fixed;
  bottom: 30px;
  right: 10px;
  overflow: visible!important;
  z-index: 3;
}
.contact a {
  background: var(--strong);
  color: white;
  padding: 15px 20px;
  border-radius: 50px;
  font-size: 22px;
  box-shadow: var(--shadow);
}
.contact a span {
  font-size: .75em;
}



/* 2カ国語 */
.translate {
  position: fixed;
  top: 10px;
  right: 10px;
  display: inline-block;
  z-index: 2;
}
.translate a {
  display: none;
}
.translate a.on {
  display: block;
}
.translate span {
  color: var(--main);
}

[data-lang] {
  display: none!important;
}
[data-lang].on {
  display: block!important;
}
p.please {
  position: absolute;
  top: 60px;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 80vw;
  background: yellow;
}



/* セクション目次 */
.section_index ul {
  max-width: 800px;
  display: flex;
  flex-direction: row;
  flex-wrap: nowrap;
  justify-content: space-around;
}



/* ファーストビュー */
header {
  margin-top: 50vh;
  /* position: relative; */
  /* top: 0; */
  /* left: 0; */
  /* width: 100%; */
  /* height: 100svh; */
  /* color: white;
  background: black; */
  text-align: center;
  /* overflow: hidden; */
  /* z-index: 2; */
}
header h1 {
  position: absolute;
  top: 0;
  left: 50%;
  transform: translate(-50%, 0);
  color: white;
  text-decoration: none;
}
header video {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  max-width: none;
  width: 165%;
  max-height: 100svh;
}
.logos {
  position: relative;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100vw;
  height: 250px;
}
header img {
  /* filter: drop-shadow(0 0 3px white); */
  /* width: 0;
  height: 0; */
  /* transform: translate(-100%, 0); */
}
.logos img {
  position: absolute;
  top: 0;
  left: 50%;
  opacity: 0;
  transition: 1s;
  /* transform: translate(-50%, 0); */
}
.logos img.on {
  width: auto;
  height: 30svh;
  opacity: 1;
  transform: translate(-50%, 0);
}
header .back_ground {
    position: absolute;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100%;
    background: linear-gradient(45deg, transparent, var(--main)40%, var(--strong)75%);
    opacity: 0.75;
}
header .first_view {
  /* position: absolute; */
  /* top: 50%; */
  /* left: 50%; */
  /* transform: translate(-50%, -50%); */
  /* width: 90vw; */
  padding-top: 70px;
}
header .first_view img, section#schedule img {
  max-width: 90vw;
  width: auto;
  height: 50vh;
  filter: grayscale(1);
}

/* 20241004 Yudai - add start */
header .first_view p {
  margin:30px 0;
}
.mark {
  background: var(--main);
  color: var(--complementary);
  padding: 5px 15px;
  border-radius: 100px;
}
/* 20241004 Yudai - add end */

div.box:has(.rental) {
  background: white;
  padding: 20px 0;
  margin: 0;
  box-shadow: var(--shadow);
}
div.box:has(.rental) p {
 color: var(--complementary);
 margin: 0;
 margin-top: 20px;
}
.rental {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
}
.rental > div {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-width: 25%;
  width: max-content;
}
.rental img {
  width: 50px;
  height: 50px;
}
.rental span {
  color: #858585;
  font-size: .85em;
}



/* コース・料金 */
section#price {
  position: relative;
  z-index: 2;
}
section#price input[type=checkbox], section#price input[type=radio] {
  display: none;
}
section#price label[for] {
  box-sizing: border-box;
  cursor: pointer;
  display: inline-block;
  padding: 5px 30px;
  position: relative;
  width: auto;
}
section#price label[for]:before {
  background: #fff;
  content: '';
  display: block;
  height: 32px;
  left: -10px;
  margin-top: -16px;
  position: absolute;
  top: 50%;
  width: 32px;
}
section#price label[for]:after {
  border-right: 7px solid #ed7a9c;
  border-bottom: 7px solid #ed7a9c;
  content: '';
  display: block;
  height: 25px;
  left: 0px;
  margin-top: -20px;
  opacity: 0;
  position: absolute;
  top: 50%;
  transform: rotate(45deg);
  width: 15px;
}
section#price input[type=checkbox]:checked + label:after,
section#price input[type=radio]:checked + label:after {
  opacity: 1;
}
section#price .box {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-bottom: 15px;
}
.price_result {
  position: sticky;
  bottom: 0;
  height: 120px;
  background: var(--complementary);
  transition: 1s;
  overflow: hidden;
}
section#price a[href="#contact"] {
  background: #EDEDED;
  color: var(--strong);
  padding: 2px 10px;
  border-radius: 50px;
  margin-bottom: 15px;
}
.contact_form {
  position: fixed;
  left: 0;
  bottom: -15px;
  height: 100svh;
  width: 100%;
  z-index: 2;
  overflow-y: scroll;
}
.contact_form a[href="#contact"] {
  position: absolute;
  top: 30px;
  left: 30px;
  height: 0;
  width: 10px;
  /* overflow: hidden; */
  color: transparent!important;!importan;!importa;!import;!impor;!impo;!imp;!im;!i;!;
}
.contact_reconfirmation {
  display: none;
}
.contact_form .contact_reconfirmation {
  display: block!important;
}
.contact_form [data-id] {
  font-size: 1.25em!important;!importan;!importa;!import;!impor;!impo;!imp;!im;!i;!;
  background: white;
  color: var(--strong);
  padding: 2px 10px;
  border-radius: 5px;
}
.contact_form a[href="#contact"]:before {
  content: '';
  position: absolute;
  top: -5px;
  left: 0;
  width: 10px;
  height: 10px;
  display: block;
  border-top: solid 4px white;
  border-left: solid 4px white;
  transform: rotate(-45deg);
}
.price_result * {
  font-size: 17.5px!important;
}
.price_result small {
  font-size: .75em !important;
}

#thanks, #recruit {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 100vw;
  height: 100svh;
  background: #000000ad;
  color: var(--strong);
  opacity: 0;
  visibility: hidden;
  transition: 1s;
  z-index: -1;
}
#thanks:target, #recruit:target {
  opacity: 1;
  visibility: visible;
  z-index: 2;
}
#thanks .box, #recruit .box {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  max-width: 83vw;
  width: max-content;
  background: white;
  padding: 40px;
}


/* PRODUCTS */
section#products {
  background: linear-gradient(180deg, var(--main), transparent, transparent);
}
section#products > div {
  /* display: inline-flex; */
  /* flex-direction: column; */
  /* flex-wrap: wrap; */
  /* justify-content: center; */
  /* align-items: center; */
  align-content: center;
}
section#products div[id], section#works div[id], section#about div[id] {
  position: relative;
  height: 100svh;
  opacity: 0;
  overflow: hidden;
  transition: 1s;
}
section#products div[id].on, section#works div[id].on, section#about div[id].on {
  opacity: 1;
}
section#products div[id] > div, section#works div[id] > div {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: max-content;
  display: flex;
  flex-direction: column;
  align-content: center;
  justify-content: center;
  align-items: center;
  /* margin: 5px; */
  padding: 5px 30px;
  background: #ffffffbd;
  box-shadow: 0 0 5px #454545;
  border-radius: 5px;
}
section#products p {
  color: var(--main);
  text-align: left;
  width: 100%;
}
section#products div[id] small:before, section#works p small:before {
  content: '\02713';
  width: 10px;
  height: 10px;
  display: inline-flex;
  font-size: 15px;
  color: black;
  margin-right: 5px;
  border: solid 1px var(
  --main);
  border-radius: 50%;
  align-items: center;
  justify-content: center;
}
section#products div.product_image {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 100%;
  height: 100svh;
  /*background-image: url("/statics/img/products_background.png");
  background-size: cover;
  background-position: center;*/
}
section#products div.adult > div {
  background: linear-gradient(#000000c7, var(--main) 80%, #ffffffb0);
  color: white!important;
}
section#products div.adult p, section#products div.adult small, section#products div.adult small:before {
  color: white!important;
}




/* WORKS */
section#works div[id] > div {
  background: none;
  box-shadow: none;
}
section#works p:has(small) {
  text-align: left;
}
div.works_homepage img {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 100px;
  height: 205px;
  z-index: 2;
}
div.works_homepage {
  position: relative;
  width: 150px;
  height: 307.5px;
  transform: scale(1.5);
}
/* div.works_homepage video { */
div.works_homepage img[src*=".gif"] {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 100px;
  height: 205px;
  border-radius: 22.5px;
  z-index: 1;
}
div.works_paper {
  position: relative;
  top: 0;
  left: 50%;
  transform: translate(-50%, 0);
  width: 100vw;
  height: 30svh;
}
div.works_paper img {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 150px;
  height: auto;
  box-shadow: 0 10px 6px -6px #777, 0px -1px 2px 2px #dbdbdb;
  transition: 1s;
}
div.works_paper picture:nth-child(1) img {
  transform: translate(-35%, -65%);
}
div.works_paper picture:nth-child(2) img {
  transform: translate(-20%, -80%);
}
div.works_paper picture:nth-child(3) img {
  transform: translate(-5%, -95%);
}
div.works_paper picture:nth-child(4) img {
  transform: translate(10%, -110%);
}
div.works_paper picture:nth-child(5) img {
  transform: translate(25%, -125%);
}
div.works_paper img.on {
  transform: translate(-50%, -50%)!important;
  z-index: 2;
}



/* ABOUT */
/* section#about div[id] {
  display: flex;
  flex-direction: column;
  align-items: center;
  align-content: center;
  justify-content: center;
}
section#about div#phrase p {
  max-width: 90vw;
}
section#about img {
  width: 100px;
  height: auto;
}
section#about .logos {
  height: 65px!important;
}
section#about div#phrase h3 {
  font-size: 3.25vw;
}
section#about div#phrase h3:after {
  content: '';
  display: block;
  width: 0;
  height: 6px;
  background: linear-gradient(45deg, var(--main), #0800ff14);
  border-radius: 100px;
  transform: rotate(359deg)translateY(-5px)skewX(46deg);
  transition: .5s;
  z-index: -1;
}
section#about div#phrase h3.on:after {
  width: 100%;
}
section#about div#detail .sns_link:before {
  content: 'SNS';
  background: var(--main);
  color: white;
  padding: 2px 10px;
  border-radius: 50px;
  margin-right: 5px;
} */



/* CONTACT */
section#contact {
  position: relative;
}
section#contact > div {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}
/*
form .box {
  width: 75vw;
  position: relative;
  left: 50%;
  transform: translateX(-50%);
  /* background: #ffffffa0; *//*
  padding: 50px;
  padding-top: 110px;
}
*/
div.valinfo {
  background: var(--main);
  color: white;
  padding: 15px 0;
  border-radius: 50px;
}
dt, dd {
  margin: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
}
dt {
  margin-top: 35px;
  position: relative;
  top: 0;
  left: 0;
}
dt span {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: var(--subc);
  color: white;
  padding: 3px 7.5px;
  border-radius: 25px;
  font-size: .5em;
  margin-left: 15px;
}
/*
form {
  display: flex;
  flex-direction: column;
  align-items: center;
  height: 100svh;
  justify-content: flex-start;
}
form p {
  margin-top: 20px;
  margin-bottom: 0;
}
*/
form input, form select, form textarea {
  font-size: 16px;
  padding: 5px 30px;
  text-align: center;
  margin: 5px 15px;
  border: solid .5px #858585;
  border-radius: 5px;
  width: 50vw;
  max-width: 350px;
}
form textarea {
  width: 100vw!important;
  height: 20svh!important;
  resize: none;
  text-align: left;
  padding: 5px 10px;
}
form input[type="button"] {
  background: var(--main);
  color: white;
  border: 0;
  border-radius: 50px;
  margin: 15px 0;
}
form .required {
  position: relative;
}
form .required:before {
  content: '必須';
  /* position: absolute; */
  /* top: 50%; */
  /* left: 25%; */
  /* transform: translate(-50%, -50%); */
  display: inline-block;
  font-size: .75em;
  color: var(
  --strong);
  background: var(--main);
  padding: 0 10px;
  margin-right: 10px;
  border-radius: 50px;
  transform: translate(0, -1px);
}
form a,#check a#send, div#are_you_over_twenty a#yes, button {
  -webkit-appearance: none;
  padding: 15px 45px;
  border: none;
  color: var(--strong);
  background: var(--main);
  border-radius: 5px;
  text-decoration: none;
  cursor: pointer;
}
.offdisplay {
  display: none;
}
div.modal {
  visibility: hidden;
  opacity: 0;
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #4d4d4db3;
  transition: all .4s;
  z-index: 999;
}
div.modal > div {
  position: relative;
  background: white;
  padding: 50px 50px;
  border-radius: 5px;
  max-height: 70svh;
  overflow-y: scroll;
}
div.modal > div::-webkit-scrollbar {
  width: 10px;
}
div.modal > div::-webkit-scrollbar-track {
  border-radius: 5px;
}
div.modal > div::-webkit-scrollbar-thumb {
  background: var(--main);
  border-radius: 5px;
}
div#check >div table {
  text-align: left;
}
div#check >div table th {
  padding: 5px 10px;
  padding-right: 30px;
}
div#check >div table td {
  padding: 5px 10px;
  max-width: 50vw;
}
div#check >div table tr:nth-child(odd), table#mfp_confirm_table tr:nth-child(odd) {
  background: #fafafa7a;
}
div.modal:target {
  visibility: visible;
  opacity: 1;
}
div#check >div table td[data-id="comments"] {
  font-size: .75em;
}
/*
a.unexplored {
  position: relative;
}
*/
.close {
  position: absolute;
  top: 10px;
  right: 10px;
  color: #585858;
  background: transparent;
  text-decoration: none;
  font-size: 1.5em;
  margin: auto;
  cursor: pointer;
}
a.unexplored:after {
  content: '必須項目は全てご記入ください';
  position: fixed;
  top: 50%;
  right: 50%;
  transform: translate(50%, -50%);
  width: max-content;
  color: black;
  background: white;
  border: 5px solid var(--main);
  padding: 25px;
  border-radius: 5px;
  transition: 4s;
}
/*
a.unexplored:before {
  content: '';
  position: absolute;
  bottom: 50px;
  border: solid 15px transparent;
  border-top: solid 15px var(--main);
}
*/
div.down {
  position: relative;
  /* top: 50px; */
  left: 50%;
  transform: translateX(-50%);
  width: 50px;
  height: 50px;
}
div.down a:before {
  content: '';
  position: absolute;
  left: 50%;
  border-left: 2px solid black;
  border-bottom: 2px solid black;
  width: 100%;
  height: 100%;
  transform: translate(-50%)rotate(-45deg);
}
/*::selection {
  background: var(--body);
  color: white;
}
::-moz-selection {
  background: var(--body);
  color: white;
}*/

a#submit.sending {
  pointer-events: none;
  opacity: .5;
}
a#submit.sending:after {
  content: '中';
}

table#mfp_confirm_table td {
  max-width: 74vw;
  padding: 10px 0;
  font-size: .8em;
}
div#mfp_hidden {
  display: none;
}
.mfp_err {
  color: var(--main);
  font-size: .75em !important;   
}
div#mfp_loading,
div#mfp_loading_screen,
div#mfp_overlay_background,
div#mfp_overlay {
  display: none;
}


/* FOOTER */
.sns li {
  margin: 30px 0;
}
.sns img {
  width: 50px;
  height: 50px;
}

.box:has(#recruit) {
  padding: 10px 0 30px 0;
  margin-bottom: 50px;
  box-shadow: 2px 2px 2px #000000, -2px -2px 2px #4a4a4a;
}
#recruit h4 {
  margin-bottom: 7px;
}
#recruit ul li {
  font-size: .75em;
  text-decoration: underline;
}


/* 次のセクションボタン、あるいは前のセクションボタン */
a.next_section {
  /* position: absolute; */
  /* bottom: 30svh; */
  background: white;
  display: inline-flex;
  flex-direction: column;
  z-index: 1;
  align-items: center;
  padding: 5px 20px;
}
a.next_section:after {
  content: "";
  width: 20px;
  height: 20px;
  /* margin-top: 50px; */
  display: inline-block;
  border-top: 5px solid var(--strong);
  border-right: 5px solid var(--complementary);
  transform: rotate(135deg);
  animation-name: updown_next_section;
  animation-delay: 0s;
  animation-duration: 3s;
  animation-timing-function: ease-in-out;
  animation-iteration-count: infinite;
}
a.previous_section {
  position: absolute;
  top: 15svh;
  display: flex;
  flex-direction: column-reverse;
  align-items: center;
  z-index: 1;
}
a.previous_section:after {
  content: "";
  width: 20px;
  height: 20px;
  margin-top: 50px;
  display: inline-block;
  border-bottom: 3px solid black;
  border-left: 3px solid var(--main);
  transform: rotate(135deg);
  animation-name: updown_next_section;
  animation-delay: 0s;
  animation-duration: 3s;
  animation-timing-function: ease-in-out;
  animation-iteration-count: infinite;
}
section#home a.next_section {
  left: 50%;
  bottom: 10svh;
  transform: translateX(-50%);
}
section:not(#home) a.previous_section, section:not(#home) a.next_section {
  right: 5vw;
}
@keyframes updown_next_section {
  0% {
    transform: translateY(0)rotate(135deg);
  }
  50% {
    transform: translateY(10px)rotate(135deg);
  }
  100% {
    transform: translateY(0)rotate(135deg);
  }
}


/* 背景 */
.background {
  position: fixed;
  top: 0;
  left: 0;
  opacity: .25;
  z-index: -1;
}
div#background_img_1 {
  background-image: url(/statics/img/AI_illust_1.jpeg);
  background-size: cover;
  background-color: rgb(255 217 100 / 70%);
  background-blend-mode: lighten;
  position: absolute;
  top: 0;
  left: 0;
  width: 100svw;
  height: 100svh;
  opacity: .4;
  z-index: -1;
}

/* スクロールしたら１画面まるまる動くように */
.snap_content {
  overflow: auto;
  scroll-snap-type: y mandatory;
  height: 100svh;
}
.snap_content > * {
  scroll-snap-align: start;
  height: 100svh;
}

/* スクロールした時の動き */
.snap_content::-webkit-scrollbar {
  width: 0px;
}