@charset "UTF-8";
/* CSS Document */
html {
  font-size: 62.5%;
  /* 16px * 62.5% = 10px */
  width: 100%;
  box-sizing: border-box;
  scroll-behavior: smooth; /* スムーズスクロールを有効にする */
}

header {
  width: 100%;
  background: linear-gradient(90deg, #303BB1, #A895FF);
}

.header-bg__text {
  padding: 30px 0 30px 0;
  display: flex;
  align-items: center;
  justify-content: center;
}
.header-bg__text ul {
  display: flex;
  gap: 120px;
}
.header-bg__text ul li {
  list-style: none;
}
.header-bg__text ul li a {
  font-size: 2.4rem;
  text-decoration: none;
  color: #000000;
  color: white;
}

.text-en {
  letter-spacing: 0.08em;
  font-size: 6rem;
  font-weight: bold;
  text-align: center;
  line-height: 100%;
  padding: 20px 0;
  /* 文字グラデーション */
  background: linear-gradient(75deg, #303BB1, #A895FF);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  /* Firefox向け */
  background-clip: text;
  color: transparent;
}

.text-ja {
  letter-spacing: 0.08em;
  font-size: 1.4rem;
  text-align: center;
  line-height: 100%;
  color: rgba(0, 0, 0, 0.5); /* 黒の透明度50% */
  padding: 10px 0 10px 0;
}

.inner {
  max-width: 1200px;
  margin: 0 auto;
}

.svglogo {
  margin: 6% 26% 6% 6%;
  transform: rotate(-5deg); /* 左に5度傾ける */
}

.svg-main {
  width: 100%;
  height: 70vh;
}

.section1 {
  padding: 60px 0 60px 0;
  max-width: 1440px;
  margin: 0 auto;
}

.logotext {
  position: absolute;
  top: 60%;
  left: 60%;
  transform: translate(-50%, -50%);
  font-size: 7.5rem;
  font-weight: bold;
  background: linear-gradient(90deg, #303BB1, #A895FF);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 150%;
  pointer-events: none; /* テキストがSVG操作の邪魔しないように */
}

.section2 {
  padding: 60px 0 60px 0;
  max-width: 1440px;
  margin: 0 auto;
}

.about-contents {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 120px;
}

.about-R {
  display: grid;
  place-items: center;
}

.about-icon-box__logo {
  width: 300px;
  height: 300px;
}
.about-icon-box__logo img {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  -o-object-fit: cover;
     object-fit: cover;
}

.about-link-box__Instagram, .about-link-box__X,
.about-link-box__YouTube, .about-link-box__niconico {
  width: 60px;
  height: 60px;
}
.about-link-box__Instagram img, .about-link-box__X img,
.about-link-box__YouTube img, .about-link-box__niconico img {
  width: 100%;
  height: 100%;
  cursor: pointer;
  -o-object-fit: cover;
     object-fit: cover;
}

.link-btn {
  width: 64%;
  margin: 0 auto;
  margin-top: 60px;
  margin-bottom: 60px;
  display: block;
  align-items: center;
  padding: 18px 0;
  /* 背景グラデーション */
  background: linear-gradient(90deg, #303BB1, #A895FF);
  /* 横長で丸い角 */
  border-radius: 100px; /* 100%ではダメ */
  /* 横長にするための最低幅設定（必要に応じて調整） */
  min-width: 140px;
  color: white;
  /* ボタンらしくカーソルを変える */
  cursor: pointer;
  /* ボーダーがあれば消す */
  border: none;
  /* もし文字の選択防止が必要なら */
  -webkit-user-select: none;
     -moz-user-select: none;
          user-select: none;
}

.my-button {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 12px 20px;
  color: white;
  text-decoration: none;
  font-weight: bold;
  font-size: 2.6rem;
  transition: background-color 0.6s ease;
}

.my-button:hover {
  color: #bdbbc0;
}

.about-link-box {
  display: flex;
  flex-direction: row;
  gap: 30px;
  margin: 10px 0 10px 0;
}

.about-L__text1 {
  font-size: 1.6rem;
  line-height: 220%;
}

.about-L__text2 {
  font-weight: bold;
  font-size: 2rem;
  line-height: 220%;
}

.about-L__text3 {
  font-size: 1.2rem;
  line-height: 220%;
}

.about-contents {
  padding: 40px;
}

.rainbow-text {
  font-size: 1.8rem;
  background: linear-gradient(72deg, #ff0000, #ff56ea, #ffc440, #2fe92f, #4fa4ff, #b681dd, #ff55c9);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.about-icon-box {
  margin-bottom: 60px;
}

.section3 {
  padding: 60px 0 60px 0;
  max-width: 1440px;
  margin: 0 auto;
}

.video-wrapper {
  padding: 20px;
}

.video-area {
  padding-top: 80px;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: row;
  gap: 60px;
}

.video-wrap {
  position: relative;
  width: 100%;
  max-width: 540px;
  /* アスペクト比で高さを維持 */
  aspect-ratio: 16/9;
  overflow: hidden;
  border-radius: 12px;
  box-shadow: 0 8px 12px rgba(37, 16, 72, 0.2);
}

.video-link {
  display: block;
  width: 100%;
  height: 100%;
  position: relative;
  transition: transform 0.3s ease;
}

.video-link:hover {
  transform: scale(1.03);
}

.video-thumbnail {
  transform: scale(1.01); /*  デフォルトで少し拡大 */
  width: 100%;
  height: 100%;
  -o-object-fit: cover;
     object-fit: cover; /* 黒い余白なしで拡大表示 */
  display: block;
}

.play-button {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 64px;
  height: 64px;
  transform: translate(-50%, -50%);
  opacity: 0.7;
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.video-link:hover .play-button {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1.1);
}

.link-btn-more {
  width: 30%;
  margin: 0 auto;
  margin-top: 120px;
  margin-bottom: 120px;
  display: block;
  padding: 18px 0;
  /* 背景グラデーション */
  background: linear-gradient(90deg, #303BB1, #A895FF);
  /* 横長で丸い角 */
  border-radius: 100px; /* 100%ではダメ */
  /* 横長にするための最低幅設定（必要に応じて調整） */
  min-width: 140px;
  color: white;
  /* ボタンらしくカーソルを変える */
  cursor: pointer;
  /* ボーダーがあれば消す */
  border: none;
  /* もし文字の選択防止が必要なら */
  -webkit-user-select: none;
     -moz-user-select: none;
          user-select: none;
}

.my-button-more {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 12px 20px;
  color: white;
  text-decoration: none;
  font-weight: bold;
  font-size: 3rem;
  transition: background-color 0.6s ease;
}

.my-button-more:hover {
  color: #bdbbc0;
}




footer {
  width: 100%;
  background: linear-gradient(90deg, #303BB1, #A895FF);
}

.footer-content {
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: center;
  padding: 30px 0 30px 0;
  gap: 40px;
}

.copyright {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 0 20px 0;
  color: white;
}

@media (max-width: 900px) {
  .thumbnail-item {
    width: 300px;
    height: 300px;
  }
  .thumbnail-row {
    padding-top: 60px;
    gap: 30px;
  }
  .my-button {
    font-size: 1.6rem;
  }
  .link-btn {
    width: 84%;
    margin-top: 30px;
    margin-bottom: 30px;
    padding: 14px 0;
  }
  .about-contents {
    gap: 60px;
  }
  .link-btn-more {
    width: 50%;
    margin-top: 60px;
    margin-bottom: 60px;
  }
  .section2 {
    padding: 20px 0 20px 0;
  }
  .section3 {
    padding: 20px 0 20px 0;
  }
}
@media (max-width: 700px) {
   .header-bg__text ul li a {
    font-size: 1.8rem;
  }
  .header-bg__text ul {
    gap: 60px;
  }
  .logotext {
    font-size: 6rem;
    top: 50%;
    left: 50%;
  }
  .section1 {
    padding: 0;
  }
  .svg-main {
    height: 50vh;
  }
  .svglogo {
    width: 80%;
    margin: 0 auto;
    /* margin: 6% 26% 6% 6%; */
    transform: rotate(0);
  }
  .text-en {
    font-size: 4rem;
    padding: 10px 0;
  }
  .section2 {
    padding: 80px 0 20px 0;
  }
  .text-ja {
    font-size: 1.2rem;
    line-height: 100%;
    color: rgba(0, 0, 0, 0.5);
    padding: 5px 0 5px 0;
  }
  .about-contents {
    flex-direction: column-reverse;
    gap: 40px;
  }
  .about-icon-box__logo {
    margin-top: 20px;
  }
  .about-contents {
    padding: 30px;
  }
  .link-btn {
    width: 64%;
  }
  .video-area {
    padding-top: 60px;
    flex-direction: column;
    gap: 60px;
  }
  .thumbnail-item {
    width: 240px;
    height: 240px;
  }
  .thumbnail-row {
    padding-top: 60px;
    gap: 30px;
  }
  .my-button-more {
    font-size: 2rem;
  }
}
@media (max-width: 550px) {

  .thumbnail-row {
    flex-direction: column;
  }
  .my-button-more {
    font-size: 1.6rem;
  }
}
@media (max-width: 470px) {
   .header-bg__text ul li a {
    font-size: 1.6rem;
  }
  .header-bg__text ul {
    gap: 40px;
  }

}
@media (max-width: 420px) {
  .logotext {
    font-size: 4.8rem;
  }
  .about-link-box__Instagram, .about-link-box__X, .about-link-box__YouTube, .about-link-box__niconico {
    width: 50px;
    height: 50px;
  }
  .link-btn-more {
    width: 60%;
  }
}