@charset "utf-8";
/*  共通 */
html {
  font-size: 62.5%;
  width: 100%;
}
body {
  margin: 0;
  color: #333;
  font-family: "游明朝", "Yu Mincho", YuMincho, "Hiragino Mincho Pro", serif;
  font-weight: 500;
  font-size: 1.6rem;
  line-height: 1.8;
  text-align: center;
  list-style: none;
  letter-spacing: 0.02px;
}
section {
  width: 100vw;
  height: auto;
  margin-bottom: 80px;
}
h2 {
  position: relative;
  margin-bottom: 1em;
  color: #e3e3e3;
  font-size: 5rem;
}
h2::before {
  position: absolute;
  top: 45px;
  left: 50%;
  transform: translateX(-50%);
  color: #333;
  font-size: 2.4rem;
  font-weight: bold;
}
a {
  text-decoration: none;
}
li {
  list-style: none;
}
.news h2::before {
  content: "お知らせ";
}
.concept h2 {
  margin: 60px 0;
  color: #818181;
  font-size: 4.8rem;
}
.concept h2::before {
  top: 45px;
  white-space: pre;
  color: #fff;
  content: "”声の魅力を最大限に引き出す”\A声楽家のためのトレーニング";
  font-size: 2.2rem;
  line-height: 1.4em;
  z-index: 1;
}
.benefit h2::before {
  content: "９つのメリット";
}
.access h2::before {
  content: "アクセス";
}
.about h2::before {
  white-space: pre;
  content: "OPERATES\A（オペラティス）とは";
}
.lesson h2::before {
  content: "レッスン";
}
.instructor h2::before {
  content: "インストラクター紹介";
}
.contact h2::before {
  content: "お問い合わせ";
}
.praivacy h2::before {
  content: "プライバシーポリシー";
}
.terms h2::before {
  content: "サイト規約";
}
h3 {
  padding: 1rem 2rem;
  margin: 0 auto;
  width: 300px;
  font-size: 2rem;
  text-align: left;
  border-left: 4mm ridge rgba(0, 0, 0, 0.8);
}
h4 {
  padding: 1rem 2rem;
  margin: 0 auto;
  width: 300px;
  font-size: 1.8rem;
  text-align: left;
  border-left: 4mm ridge rgba(228, 175, 194, 0.8);
}
@media screen and (min-width: 768px) {
  section {
    margin-bottom: 240px;
    height: auto;
  }
  h2 {
    position: relative;
    top: -30px;
    right: 25%;
    margin-bottom: 100px;
    color: #e3e3e3;
    font-size: 10rem;
    text-align: center;
  }
  h2::before {
    position: absolute;
    top: 95px;
    left: 50%;
    transform: translateX(-50%);
    color: #333;
    font-size: 2.8rem;
    font-weight: bold;
    text-transform: uppercase;
    content: "";
    z-index: 1;
  }
  .concept h2 {
    margin: 100px 0;
    color: #818181;
    font-size: 10rem;
  }
  .concept h2::before {
    top: 95px;
    white-space: pre;
    color: #fff;
    content: "”声の魅力を最大限に引き出す”\A声楽家のためのトレーニング";
    font-size: 3rem;
    line-height: 1.4em;
    z-index: 1;
  }
  h3 {
    margin-left: 200px;
  }
  h4 {
    font-size: 2rem;
  }
}
/*==========  spヘッダー */
.header {
  width: 100%;
  height: 60px;
  padding: 10px;
  background-color: #fff;
  text-align: center;
}
.header img {
  width: 90px;
}
.header .logo img {
  width: 90px;
}
#sp-menu {
  position: fixed;
  width: 100%;
  height: 70px;
  left: 0;
  bottom: 0;
  z-index: 999;
}
#sp-menu ul {
  display: flex;
  list-style: none;
  padding: 0;
  margin: 0;
  width: 100%;
}
#sp-menu li {
  justify-content: center;
  align-items: center;
  width: 50%;
  padding: 0;
  margin: 0;
}
#sp-menu li {
  background: #000;
}

#sp-menu li a {
  color: #fff;
  text-align: center;
  display: block;
  width: 100%;
  padding: 10px;
}
/*========= spナビゲーション===============*/
#g-nav_sp.panelactive {
  position: fixed;
  z-index: 999;
  width: 100%;
  height: 100vh;
}
.circle-bg {
  position: fixed;
  z-index: 900;
  width: 100px;
  height: 100px;
  border-radius: 50%;
  background-color: #000;
  transform: scale(0);
  top: calc(50% - 50px);
  left: calc(50% - 50px);
  transition: all 0.6s;
}
.circle-bg.circleactive {
  transform: scale(50);
}
#g-nav_sp.panelactive {
  display: block;
}
#g-nav_sp ul {
  opacity: 0;
  position: absolute;
  z-index: 999;
  top: -50%;
  left: 50%;
  transform: translate(-50%, -50%);
}
#g-nav_sp.panelactive ul {
  opacity: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  line-height: 6rem;
}
#g-nav_sp.panelactive ul li {
  animation-name: gnaviAnime;
  animation-duration: 1s;
  animation-delay: 0.2s;
  animation-fill-mode: forwards;
  opacity: 0;
}
@keyframes gnaviAnime {
  0% {
    opacity: 0;
  }
  100% {
    opacity: 1;
  }
}
#g-nav_sp li {
  text-align: center;
  list-style: none;
}
#g-nav_sp li a {
  color: #fff;
  text-decoration: none;
  padding: 10px;
  display: block;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 1.6rem;
  font-weight: bold;
}
/*-------ハンバーガー　--------------*/
.openbtn {
  position: fixed;
  bottom: 15px;
  right: 15%;
  z-index: 9999;
  cursor: pointer;
  width: 50px;
  height: 50px;
}
.openbtn span {
  display: inline-block;
  transition: all 0.4s;
  position: absolute;
  left: 14px;
  height: 3px;
  border-radius: 2px;
  width: 45%;
}
.openbtn span:nth-of-type(1), .openbtn span:nth-of-type(3) {
  height: 2px;
  background: #fff;
  width: 50px;
  left: 35%;
}
.openbtn span:nth-of-type(1) {
  top: 18px;
}
.openbtn span:nth-of-type(2) {
  top: 23px;
  left: 38%;
  font-size: 0.6rem;
  text-transform: uppercase;
  color: #fff;
}
.openbtn span:nth-of-type(3) {
  top: 43px;
}
.openbtn.active span:nth-of-type(1) {
  top: 18px;
  left: 35%;
  transform: translateY(6px) rotate(-45deg);
  width: 50%;
}
.openbtn.active span:nth-of-type(2) {
  opacity: 0;
}
.openbtn.active span:nth-of-type(3) {
  top: 30px;
  left: 35%;
  transform: translateY(-6px) rotate(45deg);
  width: 50%;
}
/*============= pcナビゲーションメニュー ===================*/
@media screen and (min-width: 768px) {
  .header {
    position: fixed;
    height: 80px;
    padding: 10px;
    text-align: justify;
    z-index: 1000;
  }
  .header img {
    width: 100px;
    padding-top: 10px;
  }
  .header .logo img {
    width: 100px;
    padding-top: 10px;
  }
  .g-nav_pc {
    display: flex;
    justify-content: space-between;
    padding: 0 50px;
  }
  .g-nav_pc-li {
    display: flex;
    justify-content: space-between;
    min-width: 600px;
    width: 30%;
  }
  .g-nav_pc-li li {
    margin: 20px 0;
  }
  .g-nav_pc-li li a {
    text-decoration: none;
    color: #000;
  }
  .g-nav_pc-li li a:hover {
    text-decoration: underline 2px #eeabc4;
  }
  /*==== Contactボタン ====*/
  .btn-contact {
    position: relative;
    padding: 10px 30px;
    text-align: center;
    background-color: #000;
    outline: none;
    transition: ease 0.2s;
  }
  .btn-contact span {
    position: relative;
    z-index: 3;
    color: #fff;
  }
  .btn-contact:before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    z-index: 2;
    background: #eeabc4;
    width: 100%;
    height: 100%;
    transition: transform 0.3s cubic-bezier(0.8, 0, 0.2, 1) 0s;
    transform: scale(0, 1);
    transform-origin: top;
  }
  .btn-contact:hover:before {
    transform: scale(1, 1);
  }
}
@media screen and (min-width: 768px) {
  .sp-menu {
    display: none;
  }
}
@media screen and (max-width: 767px) {
  .g-nav_pc-li {
    display: none;
  }
}
/*== ボタン共通設定 黒 */
.button_all {
  text-align: center;
  width: 256px;
  height: 33%;
  margin: 40px auto;
  display: flex;
  justify-content: center;
  align-items: center;
}
.btn_all {
  position: relative;
  color: #000;
  width: 256px;
  height: 64px;
  margin-bottom: 40px;
  line-height: 64px;
  transition: all 0.3s;
}
.btn_all span {
  transition: all 0.3s;
  tranform: scale(1, 1);
}
.btn_all::before, .btn_all::after {
  content: "";
  position: absolute;
  transition: all 0.3s;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  border: 1px solid #000;
}
.btn-animation:hover::after {
  animation-name: rotatecw;
  animation-duration: 2s;
}
.btn-animation:hover::before {
  animation-name: rotateccw;
  animation-duration: 3s;
}
.btn-animation:hover::after, .btn-animation:hover::before {
  left: 96px;
  width: 64px;
  animation-iteration-count: infinite;
  animation-timing-function: linear;
}
@keyframes rotatecw {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}
@keyframes rotateccw {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(-360deg);
  }
}
@media screen and (min-width: 768px) {
  .button_all {
    margin: 0 auto;
    height: auto;
  }
}
/*== ボタン共通設定 白 */
.button2_all {
  text-align: center;
  width: 100%;
  margin: 40px 0;
  display: flex;
  justify-content: center;
  align-items: center;
}
.btn2_all {
  position: relative;
  color: #fff;
  width: 256px;
  height: 64px;
  line-height: 64px;
  transition: all 0.3s;
}
.btn2_all span {
  transition: all 0.3s;
  tranform: scale(1, 1);
}
.btn2_all::before, .btn2_all::after {
  content: "";
  position: absolute;
  transition: all 0.3s;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  border: 1px solid rgba(255, 255, 255, 0.5);
}
.btn2-animation:hover::after {
  animation-name: rotatecw;
  animation-duration: 2s;
}
.btn2-animation:hover::before {
  animation-name: rotateccw;
  animation-duration: 3s;
}
.btn2-animation:hover::after, .btn2-animation:hover::before {
  left: 96px;
  width: 64px;
  animation-iteration-count: infinite;
  animation-timing-function: linear;
}
/*================= footer ==================*/
.footer {
  width: 100%;
  position: relative;
  font-size: 1.1rem;
}
.footer_inner {
  background-color: #000;
  color: #fff;
  padding: 40px 20px 80px;
  text-align: center;
}
.footer_wrap {
  border-bottom: 1px solid #262626;
  padding-bottom: 40px;
}
.footer_logo {
  margin-bottom: 20px;
  text-align: center;
}
.footer_logo img {
  width: 200px;
}
.footer_links {
  display: flex;
  justify-content: space-around;
}
.footer_links a {
  color: #fff;
  text-decoration: none;
}
.footer_link {
  margin: 0 2.5%;
  white-space: nowrap;
}
.footer_instagram {
  display: flex;
  align-items: center;
}
.footer_instagram img {
  width: 22px;
  height: 22px;
  margin: 0 20px 10px;
}
.footer_under {
  display: flex;
  opacity: 0.6;
  justify-content: space-around;
}
.footer_under_left {
  padding-top: 40px;
  text-align: left;
}
.footer_name {
  font-size: 1.4rem;
}
.footer_meta {
  letter-spacing: 0;
  line-height: 2;
  margin-top: 25px;
}
.footer_under_right {
  display: block;
  margin-left: 10px;
  padding-top: 50px;
  line-height: 3em;
}
.footer_sublinks {
  display: block;
  text-align: left;
}
.footer_sublinks a {
  color: #fff;
  text-decoration: none;
}
.footer_link {
  align-items: center;
  display: flex;
}
.footer_copy {
  letter-spacing: 0;
  text-align: center;
  margin: 0 auto;
  margin-top: 30px;
  opacity: 0.6;
}
/***追従するトップへ戻るボタン***/
#page-top a {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  color: #999;
  text-align: center;
  text-transform: uppercase;
  text-decoration: none;
  font-size: 0.6rem;
  transition: all 0.3s;
}
#page-top img {
  width: 30px;
}
#page-top a:hover {
  background: #fff;
}
#page-top {
  position: fixed;
  right: 10px;
  z-index: 2;
  opacity: 0;
  transform: translateY(100px);
}
#page-top.UpMove {
  animation: UpAnime 0.5s forwards;
}
@keyframes UpAnime {
  from {
    opacity: 0;
    transform: translateY(100px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
#page-top.DownMove {
  animation: DownAnime 0.5s forwards;
}
@keyframes DownAnime {
  from {
    opacity: 1;
    transform: translateY(0);
  }
  to {
    opacity: 1;
    transform: translateY(100px);
  }
}
@media screen and (min-width: 768px) {
  .footer {
    font-size: 1.6rem;
  }
  .footer_inner {
    padding: 60px 80px;
  }
  .footer_wrap {
    display: flex;
    align-items: center;
    padding-bottom: 0px;
  }
  .footer_logo {
    margin-right: auto;
  }
  .footer_logo img {
    width: 250px;
  }
  .footer_links {
    flex: 1;
    justify-content: flex-end;
  }
  .footer_instagram {
    display: flex;
    align-items: center;
  }
  .footer_instagram img {
    width: 28px;
    height: 28px;
    margin: 0 15px 0 0;
  }
  .footer_under_left {
    padding-top: 64px;
  }
  .footer_name {
    font-size: 2.2rem;
  }
  .footer_under_right {
    margin: 0 5% 0 auto;
  }
  .footer_link {
    align-items: center;
    display: flex;
  }
  .footer_copy {
    font-size: 1.2rem;
  }
}