.page-about {
  background: var(--ivory-100);
  color: var(--charcoal);
  overflow-x: hidden;
}

.page-about img {
  display: block;
  max-width: 100%;
  height: auto;
}

.page-about .about-hero {
  padding-top: calc(var(--header-h) + 28px);
  padding-bottom: 36px;
}

.page-about .about-hero-grid {
  display: grid;
  gap: 28px;
}

.page-about .about-kicker {
  margin: 18px 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--gold-500);
}

.page-about .about-hero h1 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(32px, 7vw, 60px);
  line-height: 1.12;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-about .about-lede {
  margin: 20px 0 0;
  max-width: 36em;
  font-size: 16px;
  line-height: 1.85;
  color: var(--charcoal);
}

.page-about .about-hero-figure {
  margin: 4px 0 0;
  border: 1px solid var(--line);
  background: var(--ivory-50);
  box-shadow: var(--shadow-soft);
}

.page-about .about-hero-figure img {
  width: 100%;
  aspect-ratio: 11 / 7.4;
  object-fit: cover;
}

.page-about .media-caption {
  padding: 10px 12px;
  font-size: 12px;
  line-height: 1.6;
  color: var(--slate);
  border-top: 1px solid var(--line);
}

.page-about .about-facts {
  list-style: none;
  margin: 32px 0 0;
  padding: 20px 0 0;
  border-top: 1px solid var(--line-strong);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px 16px;
}

.page-about .about-facts li {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.page-about .fact-num {
  font-family: var(--font-mono);
  font-size: 26px;
  line-height: 1;
  color: var(--ink);
}

.page-about .fact-unit {
  font-size: 15px;
  margin-left: 2px;
  color: var(--slate);
}

.page-about .fact-label {
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--slate);
}

.page-about .about-archive {
  display: grid;
  gap: 22px;
  padding-top: 8px;
  padding-bottom: 0;
}

.page-about .about-rail {
  position: relative;
  z-index: 1;
}

.page-about .rail-title {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--slate);
}

.page-about .rail-list {
  list-style: none;
  margin: 0;
  padding: 0 0 6px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-about .rail-link {
  display: inline-flex;
  align-items: baseline;
  gap: 7px;
  padding: 7px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--ivory-50);
  text-decoration: none;
  white-space: nowrap;
  transition: border-color 240ms var(--ease), background-color 240ms var(--ease);
}

.page-about .rail-link:hover,
.page-about .rail-link:focus-visible {
  border-color: var(--gold-500);
  background: #fff;
}

.page-about .rail-year {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--gold-500);
}

.page-about .rail-note {
  font-size: 11px;
  color: var(--slate);
}

.page-about .about-stream {
  min-width: 0;
}

.page-about .about-section {
  padding: 44px 0;
  border-top: 1px solid var(--line);
}

.page-about .about-section p {
  margin: 0 0 14px;
  max-width: 36em;
  font-size: 16px;
  line-height: 1.85;
  color: var(--charcoal);
}

.page-about .about-section h2 {
  margin: 8px 0 16px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(23px, 4.4vw, 36px);
  line-height: 1.24;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-about .plate {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--slate);
}

.page-about .plate-index {
  font-family: var(--font-mono);
  color: var(--gold-500);
  letter-spacing: 0.06em;
}

.page-about .plate-index::after {
  content: "";
  display: inline-block;
  width: 22px;
  height: 1px;
  margin-left: 10px;
  vertical-align: middle;
  background: var(--gold-500);
}

.page-about .about-section--mist {
  background: var(--mist);
  padding-left: 18px;
  padding-right: 18px;
}

.page-about .about-aside {
  margin: 20px 0 0 !important;
  padding-left: 14px;
  border-left: 2px solid var(--gold-200);
  font-size: 14px !important;
  line-height: 1.8 !important;
  color: var(--slate) !important;
  max-width: 34em !important;
}

/* 时间线 */
.page-about .timeline {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
}

.page-about .timeline--tail {
  margin-top: 4px;
}

.page-about .tl-item {
  position: relative;
  padding: 0 0 26px 24px;
  border-left: 1px solid var(--line-strong);
}

.page-about .tl-item::before {
  content: "";
  position: absolute;
  left: -5px;
  top: 4px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--ivory-100);
  border: 1.5px solid var(--gold-500);
}

.page-about .about-section--mist .tl-item::before {
  background: var(--mist);
}

.page-about .tl-item:last-child {
  border-left-color: transparent;
  padding-bottom: 4px;
}

.page-about .tl-item:target::before {
  background: var(--gold-500);
}

.page-about .tl-item--key::before {
  background: var(--wine);
  border-color: var(--wine);
}

.page-about .tl-year {
  margin: 0 0 2px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--gold-500);
}

.page-about .tl-item--key .tl-year {
  font-family: var(--font-display);
  font-size: 28px;
  letter-spacing: -0.01em;
  line-height: 1.1;
  color: var(--gold-500);
}

.page-about .tl-title {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 19px;
  line-height: 1.4;
  color: var(--ink);
}

.page-about .about-section .tl-text {
  margin: 0;
  max-width: 34em;
  font-size: 15px;
  line-height: 1.8;
  color: var(--slate);
}

.page-about .about-section .tl-note {
  margin: 10px 0 0;
  max-width: 34em;
  padding-left: 10px;
  border-left: 2px solid var(--gold-200);
  font-size: 13px;
  line-height: 1.7;
  color: var(--slate);
  opacity: 0.82;
  transition: opacity 240ms var(--ease), color 240ms var(--ease), border-color 240ms var(--ease);
}

.page-about .tl-item:hover .tl-note,
.page-about .tl-item:focus-within .tl-note {
  opacity: 1;
  color: var(--ink);
  border-left-color: var(--gold-500);
}

.page-about .about-inline-figure {
  margin: 26px 0 30px;
  border: 1px solid var(--line);
  background: var(--ivory-50);
  box-shadow: var(--shadow-soft);
}

.page-about .about-inline-figure img {
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

/* 色板 */
.page-about .palette {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
}

.page-about .palette li {
  display: grid;
  grid-template-columns: 20px minmax(0, 1fr) auto;
  align-items: center;
  gap: 12px;
  padding: 12px 0;
  border-top: 1px solid var(--line);
}

.page-about .palette li:last-child {
  border-bottom: 1px solid var(--line);
}

.page-about .pal-swatch {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  border: 1px solid var(--line-strong);
}

.page-about .pal-body {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.page-about .pal-name {
  font-size: 14px;
  color: var(--ink);
}

.page-about .pal-use {
  font-size: 12px;
  line-height: 1.6;
  color: var(--slate);
}

.page-about .pal-hex {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--slate);
}

/* 分工 */
.page-about .about-split {
  display: grid;
  gap: 26px;
  margin-top: 6px;
}

.page-about .team-list {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
}

.page-about .team-row {
  display: grid;
  grid-template-columns: 54px minmax(0, 1fr);
  gap: 14px;
  padding: 16px 0;
  border-top: 1px solid var(--line);
}

.page-about .team-row:last-child {
  border-bottom: 1px solid var(--line);
}

.page-about .team-num {
  font-family: var(--font-mono);
  font-size: 26px;
  line-height: 1;
  color: var(--gold-500);
}

.page-about .team-name {
  margin: 0 0 4px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 16px;
  color: var(--ink);
}

.page-about .about-section .team-desc {
  margin: 0;
  max-width: 32em;
  font-size: 14px;
  line-height: 1.75;
  color: var(--slate);
}

.page-about .about-side-figure {
  margin: 0;
  border: 1px solid var(--line);
  background: var(--ivory-50);
  box-shadow: var(--shadow-soft);
}

.page-about .about-side-figure img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
}

/* 房间 */
.page-about .room-list {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
}

.page-about .room-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: baseline;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}

.page-about .room-name {
  display: flex;
  flex-direction: column;
  gap: 2px;
  font-size: 15px;
  color: var(--ink);
}

.page-about .room-note {
  font-size: 12px;
  line-height: 1.6;
  color: var(--slate);
}

.page-about .room-count {
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--gold-500);
  white-space: nowrap;
}

/* 节律 */
.page-about .about-section--ink {
  background: var(--ink);
  color: var(--ivory-100);
  padding-left: 18px;
  padding-right: 18px;
  border-top: 1px solid var(--gold-500);
}

.page-about .about-section--ink h2 {
  color: var(--ivory-100);
}

.page-about .about-section--ink p {
  color: rgba(245, 241, 230, 0.76);
}

.page-about .plate--light {
  color: var(--gold-200);
}

.page-about .rhythm-grid {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line-light);
  border: 1px solid var(--line-light);
}

.page-about .rhythm-item {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 14px;
  background: var(--ink);
}

.page-about .rhythm-num {
  font-family: var(--font-mono);
  font-size: 22px;
  line-height: 1.1;
  color: var(--gold-500);
}

.page-about .rhythm-label {
  font-size: 12px;
  letter-spacing: 0.04em;
  color: rgba(245, 241, 230, 0.7);
}

.page-about .about-section--ink .rhythm-tip {
  margin: 22px 0 0;
  max-width: 36em;
  padding: 14px 14px 14px 16px;
  border-left: 3px solid var(--wine);
  background: rgba(245, 241, 230, 0.05);
  font-size: 14px;
  line-height: 1.8;
  color: rgba(245, 241, 230, 0.86);
}

.page-about .rhythm-tip .tag {
  margin-right: 8px;
}

/* 收束 */
.page-about .about-close {
  background: var(--ivory-50);
  border-top: 1px solid var(--line);
  padding: 48px 0 64px;
}

.page-about .about-close h2 {
  margin: 8px 0 18px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(23px, 4.4vw, 34px);
  line-height: 1.26;
  color: var(--ink);
}

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

.page-about .who-item {
  padding: 16px 0;
  border-top: 1px solid var(--line);
}

.page-about .who-item:last-child {
  border-bottom: 1px solid var(--line);
}

.page-about .who-title {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 17px;
  color: var(--ink);
}

.page-about .who-text {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--slate);
}

.page-about .who-text a,
.page-about .close-note a {
  color: var(--felt-700);
  text-decoration: none;
  border-bottom: 1px solid var(--gold-200);
}

.page-about .who-text a:hover,
.page-about .close-note a:hover {
  border-bottom-color: var(--gold-500);
}

.page-about .about-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.page-about .about-actions .btn {
  min-height: 46px;
  display: inline-flex;
  align-items: center;
  padding: 0 20px;
  font-size: 15px;
  text-decoration: none;
}

.page-about .close-note {
  margin: 20px 0 0;
  font-size: 13px;
  line-height: 1.8;
  color: var(--slate);
}

@media (min-width: 700px) {
  .page-about .rhythm-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .room-list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 32px;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero {
    padding-top: calc(var(--header-h) + 48px);
    padding-bottom: 52px;
  }

  .page-about .about-hero-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: end;
    gap: 40px;
  }

  .page-about .about-lede {
    font-size: 17px;
  }

  .page-about .about-facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 24px;
    margin-top: 44px;
  }

  .page-about .fact-num {
    font-size: 32px;
  }

  .page-about .about-archive {
    grid-template-columns: minmax(0, 3fr) minmax(0, 9fr);
    column-gap: 48px;
    align-items: start;
  }

  .page-about .about-rail {
    position: sticky;
    top: calc(var(--header-h) + 28px);
    align-self: start;
  }

  .page-about .rail-list {
    display: block;
    overflow: visible;
    padding: 2px 0 0;
    border-left: 1px solid var(--line-strong);
  }

  .page-about .rail-list li + li {
    margin-top: 20px;
  }

  .page-about .rail-link {
    display: block;
    padding: 0 0 0 16px;
    border: 0;
    border-radius: 0;
    background: transparent;
    position: relative;
  }

  .page-about .rail-link::before {
    content: "";
    position: absolute;
    left: -4px;
    top: 7px;
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--gold-500);
    transition: transform 240ms var(--ease);
  }

  .page-about .rail-link:hover::before,
  .page-about .rail-link:focus-visible::before {
    transform: scale(1.5);
  }

  .page-about .rail-year {
    display: block;
    font-size: 15px;
  }

  .page-about .rail-link:hover .rail-note {
    color: var(--ink);
  }

  .page-about .about-section {
    padding: 64px 0;
  }

  .page-about .about-section--mist,
  .page-about .about-section--ink {
    padding-left: 32px;
    padding-right: 32px;
  }

  .page-about .about-section--ink {
    padding-top: 52px;
    padding-bottom: 52px;
  }

  .page-about .tl-item {
    padding-left: 30px;
    padding-bottom: 32px;
  }

  .page-about .about-split {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.66fr);
    gap: 40px;
    align-items: start;
  }

  .page-about .about-close {
    padding: 72px 0 88px;
  }

  .page-about .close-inner {
    max-width: 820px;
  }
}
<<<PAGE_CSS_END>>>
</main>