.home-hero {
  position: sticky;
  top: 0;
  height: clamp(50rem, 100dvh, 70rem);
  padding-block: 5rem 1.5rem;
  display: flex;
  flex-direction: column;
  justify-content: end;
  gap: 3rem;
  
  & .home-hero__links {
    position: relative;
    display: grid;
    max-width: 30rem;
    & .home-hero__link {
      position: relative;
      & > p {
        line-height: 1.15;
        letter-spacing: 0;
        font-family: var(--font-display);
        font-size: 2.5rem;
        border-bottom: 3px solid var(--snow);
        align-self: start;
        text-box-trim: trim-both;
        text-box-edge: cap alphabetic;
        padding-inline: 0.125rem;
        position: absolute;
        z-index: 1;
      }
      &:nth-of-type(1) > p {
        top: -1.5rem;
        right: -1.125rem;
      }
      &:nth-of-type(2) > p {
        top: 0;
        right: -1.125rem;
      }
      & > div {
        position: relative;
        overflow: hidden;
        padding: 1.75rem 1.5rem 1.25rem;
      }
      &:nth-of-type(1) > div {
        border-top-right-radius: 1.5rem;
        border-top-left-radius: 1.5rem;
      }
      &:nth-of-type(2) > div {
        border-bottom-right-radius: 1.5rem;
        border-bottom-left-radius: 1.5rem;
      }
      & .home-hero__link-bg-image {
        position: absolute;
        inset: 0;
        &::before {
          pointer-events: none;
          content: "";
          position: absolute;
          inset: 0;
          background-image: url("/system_panel/uploads/images/noise-logo-orange.jpg");
        }
        &.home-hero__link-bg-image--pink {
          &::before {
            background-image: url("/system_panel/uploads/images/noise-logo-pink.jpg");
          }
        }
        & img {
          /* 修正：opacity: 40% から 0.4 に変更（構文エラー回避） */
          opacity: 0.4;
          object-fit: cover;
          width: 100%;
          height: 100%;
          position: relative;
        }
      }
    }
    @media (min-width: 768px) {
      grid-template-columns: repeat(2, minmax(0, 1fr));
      & .home-hero__link {
        &:nth-of-type(1) > p {
          right: auto;
          left: -1.25rem;
        }
        &:nth-of-type(2) > p {
          top: -1.5rem;
          right: -1.25rem;
        }
        &:nth-of-type(1) > div {
          border-top-right-radius: 0;
          border-bottom-left-radius: 1.5rem;
        }
        &:nth-of-type(2) > div {
          border-bottom-right-radius: 1.5rem;
          border-bottom-left-radius: 0;
        }
      }
    }
  }
}

/* 1. タイムラインの名前をページ全体で共有できるようにスコープを広げる */
html {
  timeline-scope: --hero-timeline;
}

/* 2. 監視対象の要素 */
.home-hero-cover {
  position: relative;
  view-timeline-name: --hero-timeline;
  view-timeline-axis: block;
  
  & > img {
    object-fit: cover;
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
  }
  & > div {
    padding: 0.625rem;
    background-color: var(--snow);
    mix-blend-mode: lighten;
    & img {
      width: 100%;
    }
  }
}

/* 3. チャットボットの制御 */
#chatbot-btn {
  /* transition は残し、!important は一切使用しない */
  transition: opacity 0.4s ease, visibility 0.4s ease;

  /* スクロール駆動アニメーションの指定 */
  animation-name: showChatbot;
  animation-fill-mode: both;
  animation-timeline: --hero-timeline;
  animation-range: exit 0% exit 100%;
}

/* 4. キーフレームの修正（!important を完全に撤去） */
@keyframes showChatbot {
  /* アニメーションの範囲外（スクロール前）は、この from の値がインラインスタイルを上書きして消します */
  from {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
  }
  /* 指定の位置を通過したら、この to の値に切り替わって出現します */
  to {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
  }
}

.home-blog-list {
  & .webgene-blog {
    display: grid;
    gap: 2rem;
    @media (min-width: 1024px) {
      grid-template-columns: repeat(3, minmax(0, 1fr));
      & .webgene-no-items {
        grid-column: span 3 / span 3;
      }
    }
  }
}

.home-intro-text {
  padding-left: 1em;
  text-indent: -1em;
}

.home-intro-bg-image {
  object-fit: cover;
  width: 100%;
  position: absolute;
  left: 0;
  &.home-intro-bg-image--1 {
    clip-path: polygon(0 0, 100% 0, 100% 100%, 0 77%);
    height: 40.507859734%;
    top: 0;
  }
  &.home-intro-bg-image--2 {
    clip-path: polygon(0 23%, 100% 0, 100% 100%, 0 100%);
    height: 49.6372430472%;
    bottom: 0;
  }
}

.home-intro-bg-filter {
  position: absolute;
  inset: 0;
  background-color: var(--ink);
  opacity: 60%;
}