* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
  margin: 0;
  scroll-behavior: smooth;
}

video {
  width: 100%;
}

.twitter {
  padding: 0 20px;
  margin: auto;
}

.twitter_box {
  height: 300px;
  overflow: scroll;
}

.youtube_box {
  position: relative;
  width: 100%;
  height: 0;
  padding-top: 56.25%;
}
.youtube_box iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.btn_group {
  position: fixed;
  bottom: 10px;
  right: 10px;
}
.btn2 {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 50px;
  height: 50px;
  background: #333;
  border-radius: 10px;
  text-decoration: none;
  transition: 0.1s;
  filter: drop-shadow(2px 3px 3px rgba(0, 0, 0, 0.5));
}
.btn2::before {
  content: "";
  width: 6px;
  height: 6px;
  border: 3px solid;
  border-color: #fff transparent transparent #fff;
  transform: rotate(45deg);
  margin-top: 2px;
}
.btn2::after {
  content: "TOP";
  color: #fff;
  font-weight: bold;
  font-size: 13px;
}
.btn2:hover {
  filter: drop-shadow(1px 1px 1px rgba(0, 0, 0, 0.5));
}

swiper-container {
  width: 100%;
  height: 100%;
}

swiper-slide {
  text-align: center;
  font-size: 18px;
  display: flex;
  justify-content: center;
  align-items: center;
}

swiper-slide img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.lightbox {
  position: relative;
}

input[type="checkbox"] {
  display: none;
}

input[type="checkbox"]:checked + img + .modal {
  display: flex;
}

.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.8);
  justify-content: center;
  align-items: center;
  z-index: 9999;
}

.content {
  width: auto;
  height: 90%;
  overflow: hidden;
}

.content img {
  height: auto;
  max-height: 100%;
  width: auto;
}

/*トップメニュー設定*/
#menu {
  position: fixed;
  width: 100%;
  top: 0;
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  /*    background: rgba(255, 255, 255, 0.3);
    background-size: cover;
    padding: 2px;
    border-bottom: 0px solid #D5C6B8;
    border-right: 0px solid #D5C6B8; */
  z-index: 9999;
}
.navi {
  width: 100%;
}
.navi ul {
  display: flex;
  justify-content: flex-end;
  align-items: flex-end;
}
.brand-image img,
.navi ul li {
  filter: drop-shadow(2px 2px 0.1px rgba(0, 0, 0, 1));
}
.navi ul li {
  width: 22%;
}
.brand-image {
  width: 72%;
  justify-content: space-evenly;
}
.navi ul li a:hover {
  transition: all 0.3s ease-in-out;
  filter: brightness(130%);
}
.shadow_img {
  filter: drop-shadow(2px 2px 0.1px rgba(0, 0, 0, 1));
}
/* フェードインアニメーションのスタイル */
.fade-in {
  opacity: 0;
  transition: opacity 1s ease-out;
}
.fade-in.show {
  opacity: 1;
}