/*
 * といろのこと — 七章を光の濃淡で読むページ
 * Mobile first / html[data-mode="hiru|yoru"] / public sidebar compatible
 */

body.public-sidebar-page {
  overflow-x: clip;
  background: var(--washi);
}

.aboutFace {
  width: 100%;
  min-width: 0;
  overflow: clip;
  color: var(--sumi-1);
  font-family: var(--serif);
}

.aboutHero,
.aboutChapter,
.aboutQuoteBand {
  position: relative;
  overflow: hidden;
  border-bottom: var(--line);
}

.aboutHero::before,
.aboutChapter::before,
.aboutQuoteBand::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image: url('/asanoha.svg');
  background-repeat: repeat;
  background-size: 34.64px 60px;
  opacity: .045;
}

[data-mode="yoru"] .aboutHero::before,
[data-mode="yoru"] .aboutChapter::before,
[data-mode="yoru"] .aboutQuoteBand::before {
  opacity: .07;
}

.aboutHero {
  min-height: min(760px, 88svh);
  display: grid;
  align-items: center;
  padding: 96px 20px 72px;
  background:
    radial-gradient(circle at 76% 18%, var(--kin-lt), transparent 34%),
    linear-gradient(155deg, var(--washi), var(--washi-deep));
}

.aboutHeroInner {
  position: relative;
  z-index: 1;
  width: min(100%, 720px);
  margin: 0 auto;
  text-align: center;
}

.aboutTitle {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(2rem, 8vw, 3.5rem);
  font-weight: 400;
  line-height: 1.45;
  letter-spacing: .14em;
  text-wrap: balance;
}

.aboutSubtitle {
  margin: 16px 0 0;
  font-size: 1rem;
  line-height: 2;
  letter-spacing: .2em;
  color: var(--sumi-2);
}

.aboutSymbol {
  margin: 44px auto 0;
  display: grid;
  justify-items: center;
  gap: 24px;
}

.aboutSymbolMark {
  width: clamp(116px, 30vw, 160px);
  height: auto;
  color: var(--kin);
}

.aboutSymbolCaption {
  margin: 0;
  font-size: 1rem;
  font-weight: 300;
  line-height: 2.15;
  letter-spacing: .1em;
  color: var(--sumi-2);
}

.aboutChapter {
  padding: 82px 20px;
  background: var(--washi);
}

.aboutToneDeep {
  background: var(--washi-deep);
}

.aboutToneQuiet {
  padding-top: 68px;
  padding-bottom: 68px;
  background: color-mix(in srgb, var(--washi) 84%, var(--kin-lt));
}

.aboutToneCore {
  padding-top: 96px;
  padding-bottom: 96px;
  background:
    radial-gradient(circle at 50% 32%, var(--kin-lt), transparent 48%),
    var(--washi-deep);
}

.aboutToneWarm {
  background:
    radial-gradient(circle at 18% 84%, var(--kin-lt), transparent 34%),
    linear-gradient(160deg, var(--washi-deep), var(--washi));
}

.aboutChapterInner {
  position: relative;
  z-index: 1;
  width: min(100%, 720px);
  margin: 0 auto;
}

.aboutChapterHeader {
  margin-bottom: 32px;
  padding-bottom: 20px;
  border-bottom: var(--line);
}

.aboutChapterNum {
  margin: 0 0 10px;
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1rem;
  font-weight: 400;
  line-height: 1.5;
  letter-spacing: .28em;
  color: var(--sumi-2);
}

.aboutChapterNum::after {
  content: "";
  width: 32px;
  height: 1px;
  display: block;
  background: var(--kin);
}

.aboutChapterTitle {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(1.75rem, 6vw, 2.65rem);
  font-weight: 400;
  line-height: 1.55;
  letter-spacing: .1em;
  text-wrap: balance;
}

.aboutChapterBody {
  font-size: 1rem;
  font-weight: 300;
  line-height: 2.15;
  letter-spacing: .04em;
  color: var(--sumi-2);
}

.aboutChapterBody p {
  margin: 0;
}

.aboutChapterBody p + p {
  margin-top: 1.75rem;
}

.aboutQuoteBand {
  padding: 68px 20px;
  background:
    radial-gradient(circle at 50% 50%, var(--kin-lt), transparent 52%),
    var(--washi);
}

.aboutQuote {
  position: relative;
  z-index: 1;
  width: min(100%, 820px);
  margin: 0 auto;
  text-align: center;
  font-size: clamp(1.35rem, 5vw, 2.25rem);
  font-weight: 400;
  line-height: 1.9;
  letter-spacing: .12em;
  text-wrap: balance;
}

.aboutDraGrid {
  width: min(100%, 940px);
  display: grid;
  gap: 48px;
  align-items: center;
}

.aboutDraPortrait {
  position: relative;
  width: min(66vw, 220px);
  aspect-ratio: 1;
  margin: 0 auto;
  padding: 10px;
  overflow: hidden;
  border: 1px solid var(--kin);
  border-radius: 50%;
  background: var(--washi);
  box-shadow: var(--shadow);
}

.aboutDraPortrait picture,
.aboutDraPortrait img {
  width: 100%;
  height: 100%;
  display: block;
}

.aboutDraPortrait img {
  border-radius: 50%;
  object-fit: cover;
}

.aboutPawMark {
  width: 34px;
  height: 34px;
  display: block;
  margin: 0 0 28px;
  opacity: .45;
}

.aboutColorThread {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 0 0 32px;
}

.aboutColorDot {
  width: 30px;
  height: 30px;
  display: block;
  border: 1px solid var(--sumi-4);
  border-radius: 50%;
  box-shadow: var(--shadow);
}

.aboutColorDotSakura { background: var(--iro-sakura); }
.aboutColorDotYamabuki { background: var(--iro-yamabuki); }
.aboutColorDotWakakusa { background: var(--iro-wakakusa); }
.aboutColorDotMizu { background: var(--iro-mizu); }
.aboutColorDotSorairo { background: var(--iro-sorairo); }
.aboutColorDotFuji { background: var(--iro-fuji); }

.aboutCoreMark {
  position: absolute;
  z-index: 0;
  top: 50%;
  right: -72px;
  width: 240px;
  height: 240px;
  transform: translateY(-50%);
  color: var(--kin);
  opacity: .09;
  pointer-events: none;
}

.aboutClosingSeal {
  width: 48px;
  height: 48px;
  display: block;
  margin: 44px auto 0;
  color: var(--kin);
}

@media (min-width: 600px) {
  .aboutHero {
    padding: 108px 32px 84px;
  }

  .aboutChapter {
    padding: 96px 32px;
  }

  .aboutToneQuiet {
    padding-top: 72px;
    padding-bottom: 72px;
  }

  .aboutToneCore {
    padding-top: 108px;
    padding-bottom: 108px;
  }

  .aboutQuoteBand {
    padding: 82px 32px;
  }
}

@media (min-width: 1100px) {
  .aboutDraGrid {
    grid-template-columns: minmax(0, 1fr) 240px;
    gap: 64px;
  }

  .aboutDraPortrait {
    width: 220px;
  }
}

@media (min-width: 1024px) {
  .aboutHero {
    min-height: min(820px, 90svh);
    padding: 120px 48px 96px;
  }

  .aboutChapter {
    padding: 108px 48px;
  }

  .aboutToneQuiet {
    padding-top: 78px;
    padding-bottom: 78px;
  }

  .aboutToneCore {
    padding-top: 124px;
    padding-bottom: 124px;
  }

  .aboutQuoteBand {
    padding: 96px 48px;
  }

  .aboutCoreMark {
    right: -96px;
    width: 320px;
    height: 320px;
  }
}

@media (prefers-reduced-motion: reduce) {
  body.public-sidebar-page {
    transition: none;
  }
}