.page-about {
  padding-bottom: 88px;
}

.page-about .about-hero {
  padding-top: 24px;
  padding-bottom: 64px;
}

.page-about .about-hero__inner {
  display: grid;
  gap: 32px;
}

.page-about .about-hero__copy .lede {
  margin-bottom: 18px;
}

.page-about .about-hero__copy p + p {
  margin-top: 14px;
}

.page-about .about-hero__copy .btn {
  margin-right: 10px;
  margin-top: 8px;
}

.page-about .about-hero__figure {
  margin: 0;
}

.page-about .about-hero__caption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--ink);
  opacity: 0.72;
}

.page-about .about-coordinate {
  padding-top: 24px;
  padding-bottom: 64px;
}

.page-about .about-coordinate__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  margin-top: 28px;
}

.page-about .about-coordinate__card {
  position: relative;
  padding: 22px 20px 20px;
  background: var(--card);
  border: var(--hair) solid var(--ink);
  box-shadow: var(--shadow-soft);
  transition: transform 200ms ease, box-shadow 200ms ease;
}

.page-about .about-coordinate__card::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 6px;
  background: var(--mist);
}

.page-about .about-coordinate__card--spring::before { background: var(--spring); }
.page-about .about-coordinate__card--summer::before { background: var(--summer); }
.page-about .about-coordinate__card--autumn::before { background: var(--autumn); }
.page-about .about-coordinate__card--winter::before { background: var(--winter); }

.page-about .about-coordinate__card:hover {
  transform: translate(-2px, -2px);
  box-shadow: var(--shadow-hard);
}

.page-about .about-coordinate__season {
  display: inline-block;
  margin-bottom: 10px;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--ink);
  padding: 3px 8px;
  border: 2px solid var(--ink);
  background: var(--paper);
}

.page-about .about-coordinate__card h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 19px;
  line-height: 1.4;
  color: var(--ink);
}

.page-about .about-coordinate__card p {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink);
}

.page-about .about-coordinate__link {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--ink);
  text-decoration: none;
  border-bottom: 2px solid var(--amber);
  padding-bottom: 2px;
}

.page-about .about-coordinate__link:hover,
.page-about .about-coordinate__link:focus-visible {
  background: var(--amber);
  color: var(--card);
}

.page-about .about-timeline {
  padding-top: 32px;
  padding-bottom: 72px;
}

.page-about .about-timeline__band {
  margin: 24px 0 28px;
  border: var(--hair) solid var(--ink);
  overflow: hidden;
  aspect-ratio: 16 / 7;
  box-shadow: var(--shadow-soft);
}

.page-about .about-timeline__band img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
}

.page-about .about-timeline__layout {
  display: grid;
  gap: 26px;
}

.page-about .about-timeline__years {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 6px;
  -webkit-overflow-scrolling: touch;
}

.page-about .about-timeline__year-link {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  padding: 7px 14px;
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--ink);
  background: var(--card);
  border: 2px solid var(--ink);
  text-decoration: none;
  white-space: nowrap;
  transition: background 150ms ease, transform 150ms ease;
}

.page-about .about-timeline__year-link:hover,
.page-about .about-timeline__year-link:focus-visible {
  background: var(--amber);
  transform: translateY(-2px);
}

.page-about .about-timeline__track {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .about-timeline__stage {
  position: relative;
  padding: 20px 20px 20px 22px;
  background: var(--card);
  border: 2px solid var(--ink);
  box-shadow: 4px 4px 0 rgba(22, 59, 50, 0.12);
  scroll-margin-top: 96px;
}

.page-about .about-timeline__stage::before {
  content: "";
  position: absolute;
  left: -2px;
  top: -2px;
  bottom: -2px;
  width: 6px;
  background: var(--mist);
}

.page-about .about-timeline__stage--spring::before { background: var(--spring); }
.page-about .about-timeline__stage--summer::before { background: var(--summer); }
.page-about .about-timeline__stage--autumn::before { background: var(--autumn); }
.page-about .about-timeline__stage--winter::before { background: var(--winter); }
.page-about .about-timeline__stage--amber::before { background: var(--amber); }

.page-about .about-timeline__stage + .about-timeline__stage {
  margin-top: 16px;
}

.page-about .about-timeline__year {
  display: inline-block;
  margin-bottom: 8px;
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--card);
  background: var(--ink);
  padding: 3px 9px;
}

.page-about .about-timeline__stage h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 20px;
  line-height: 1.4;
  color: var(--ink);
}

.page-about .about-timeline__stage p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink);
}

.page-about .about-timeline__stage .btn {
  margin-top: 14px;
}

.page-about .about-kunming {
  padding-top: 24px;
  padding-bottom: 64px;
  background: linear-gradient(160deg, rgba(108, 143, 184, 0.1) 0%, rgba(251, 247, 238, 0) 62%);
}

.page-about .about-kunming__inner {
  display: grid;
  gap: 32px;
}

.page-about .about-kunming__figure {
  margin: 0;
}

.page-about .about-kunming__caption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--ink);
  opacity: 0.72;
}

.page-about .about-kunming__copy p {
  margin: 0 0 12px;
  font-size: 16px;
  line-height: 1.85;
  color: var(--ink);
}

.page-about .about-kunming__list {
  margin-top: 18px;
}

.page-about .about-kunming__list li {
  display: flex;
  gap: 12px;
  align-items: baseline;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink);
}

.page-about .about-kunming__list .mono {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  font-size: 13px;
  color: var(--card);
  background: var(--ink-btn);
}

.page-about .about-rhythm {
  padding-top: 24px;
  padding-bottom: 64px;
}

.page-about .about-rhythm__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  margin-top: 26px;
}

.page-about .about-rhythm__panel {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 10px;
  padding: 22px 20px;
}

.page-about .about-rhythm__cycle {
  display: inline-block;
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--ink);
  background: var(--spring);
  padding: 3px 10px;
  border: 2px solid var(--ink);
}

.page-about .about-rhythm__panel h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 19px;
  color: var(--ink);
}

.page-about .about-rhythm__panel p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink);
}

.page-about .about-rhythm__panel .btn {
  margin-top: 4px;
}

.page-about .about-scale {
  padding-top: 48px;
  padding-bottom: 56px;
  background: var(--ink);
  color: var(--paper);
}

.page-about .about-scale__eyebrow {
  color: var(--spring);
}

.page-about .about-scale .section-title {
  color: var(--paper);
}

.page-about .about-scale .lede {
  color: rgba(251, 247, 238, 0.86);
}

.page-about .about-scale__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-top: 28px;
}

.page-about .about-scale__item {
  padding: 20px;
  border: 2px solid rgba(251, 247, 238, 0.3);
  background: rgba(251, 247, 238, 0.04);
}

.page-about .about-scale__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(32px, 7vw, 48px);
  font-weight: 700;
  line-height: 1;
  color: var(--spring);
  margin-bottom: 10px;
}

.page-about .about-scale__label {
  display: block;
  font-size: 14px;
  letter-spacing: 0.04em;
  color: rgba(251, 247, 238, 0.86);
}

.page-about .about-scale__note {
  margin: 24px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(251, 247, 238, 0.86);
}

.page-about .about-outro {
  padding-top: 64px;
  padding-bottom: 24px;
}

.page-about .about-outro__panel {
  padding: 28px 22px;
  background: var(--card);
  border: var(--hair) solid var(--ink);
  box-shadow: var(--shadow-hard);
}

.page-about .about-outro__panel p {
  margin: 0 0 14px;
  font-size: 16px;
  line-height: 1.85;
  color: var(--ink);
}

.page-about .about-outro__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0;
}

.page-about .about-outro__actions .btn {
  margin: 0;
}

@media (min-width: 640px) {
  .page-about .about-coordinate__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .about-rhythm__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .about-scale__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .about-outro__panel {
    padding: 36px 32px;
  }
}

@media (min-width: 860px) {
  .page-about {
    padding-bottom: 104px;
  }

  .page-about .about-timeline__layout {
    grid-template-columns: 108px minmax(0, 1fr);
    gap: 36px;
  }

  .page-about .about-timeline__years {
    flex-direction: column;
    overflow: visible;
    position: sticky;
    top: calc(var(--header-h) + 20px);
    align-self: start;
    padding-bottom: 0;
  }

  .page-about .about-timeline__year-link {
    justify-content: center;
  }

  .page-about .about-rhythm__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 920px) {
  .page-about .about-hero__inner {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.85fr);
    align-items: center;
    gap: 52px;
  }

  .page-about .about-kunming__inner {
    grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
    align-items: center;
    gap: 48px;
  }
}

@media (min-width: 1080px) {
  .page-about .about-coordinate__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-coordinate__card,
  .page-about .about-timeline__year-link {
    transition: none;
  }

  .page-about .about-coordinate__card:hover,
  .page-about .about-timeline__year-link:hover {
    transform: none;
  }
}