.page-about {
  --about-rail: 6.5rem;
  background: var(--bg);
  color: var(--text);
  padding-bottom: calc(var(--step-12) * 0.6);
  overflow-x: clip;
}

.page-about .about-masthead {
  padding-top: calc(var(--step-9) * 0.9);
  padding-bottom: var(--step-9);
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(120% 90% at 88% 0%, rgba(32, 227, 194, 0.10), transparent 55%),
    radial-gradient(90% 80% at 2% 10%, rgba(255, 90, 31, 0.12), transparent 60%);
}

.page-about .about-masthead .shell {
  max-width: var(--shell-max);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.page-about .breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 0 0 var(--step-8);
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: var(--step-2);
  letter-spacing: 0.08em;
  color: var(--text-faint);
}

.page-about .breadcrumb-item + .breadcrumb-item::before {
  content: "／";
  margin-inline-end: 0.5rem;
  color: var(--print);
}

.page-about .breadcrumb-item a {
  color: var(--text-muted);
  text-decoration: none;
}

.page-about .breadcrumb-item a:hover {
  color: var(--cyan);
}

.page-about .eyebrow {
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: var(--step-2);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin: 0 0 var(--step-4);
}

.page-about .about-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2rem, 7vw, var(--step-11));
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--paper);
  max-width: 20ch;
}

.page-about .about-lead {
  margin: var(--step-7) 0 0;
  max-width: 62ch;
  font-size: var(--step-6);
  line-height: 1.75;
  color: var(--text-muted);
}

.page-about .about-meta {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: var(--step-9) 0 0;
  padding: 0;
  list-style: none;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .about-meta li {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  padding: var(--step-5);
  background: var(--surface);
}

.page-about .about-meta .num {
  font-family: var(--font-mono);
  font-size: var(--step-8);
  font-weight: 700;
  color: var(--orange);
  font-variant-numeric: tabular-nums;
}

.page-about .about-meta small {
  font-size: 0.5em;
  margin-inline-start: 0.15em;
}

.page-about .meta-label {
  font-size: var(--step-3);
  color: var(--text-faint);
  letter-spacing: 0.04em;
}

.page-about .about-hero-figure {
  max-width: var(--shell-max);
  margin: var(--step-9) auto 0;
  padding-inline: var(--gutter);
}

.page-about .media-frame {
  display: block;
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--surface);
}

.page-about .media-frame--16x9 { aspect-ratio: 16 / 9; }
.page-about .media-frame--4x3 { aspect-ratio: 4 / 3; }
.page-about .media-frame--21x9 { aspect-ratio: 21 / 9; }

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

.page-about .media-caption {
  margin-top: 0.75rem;
  font-family: var(--font-mono);
  font-size: var(--step-2);
  line-height: 1.7;
  color: var(--text-faint);
  border-left: 2px solid var(--orange);
  padding-left: 0.75rem;
}

.page-about .chapter {
  max-width: var(--shell-max);
  margin-inline: auto;
  padding-inline: var(--gutter);
  padding-block-start: var(--step-11);
}

.page-about .chapter-head {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.5rem;
  padding-bottom: var(--step-5);
  border-bottom: 1px solid var(--line);
  margin-bottom: var(--step-7);
}

.page-about .chapter-num {
  font-family: var(--font-mono);
  font-size: var(--step-9);
  font-weight: 700;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px var(--print);
  font-variant-numeric: tabular-nums;
}

.page-about .section-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.5rem, 4.2vw, var(--step-9));
  line-height: 1.2;
  letter-spacing: -0.015em;
  color: var(--paper);
}

.page-about .chapter-body {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--step-6);
}

.page-about .prose p {
  margin: 0 0 var(--step-5);
  font-size: var(--step-6);
  line-height: 1.8;
  color: var(--text-muted);
  max-width: 66ch;
}

.page-about .prose p:last-child { margin-bottom: 0; }

.page-about .prose a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-about .chapter-note.note {
  border-left: 2px solid var(--orange);
  padding: 0.25rem 0 0.25rem 1rem;
  font-size: var(--step-3);
  line-height: 1.7;
  color: var(--text-faint);
  max-width: 34ch;
}

/* 时间轴 */
.page-about .timeline {
  display: flex;
  gap: var(--step-5);
  margin-top: var(--step-8);
  padding: var(--step-5) 0 var(--step-6);
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
  scrollbar-color: var(--orange) transparent;
}

.page-about .timeline-item {
  flex: 0 0 min(78vw, 17rem);
  scroll-snap-align: start;
  padding: var(--step-5);
  background: var(--surface);
  border: 1px solid var(--line);
  border-top: 2px solid var(--orange);
  transition: transform 0.25s var(--ease), border-color 0.25s var(--ease);
}

.page-about .timeline-item:hover,
.page-about .timeline-item:focus-within {
  transform: translateY(-4px);
  border-color: var(--print);
}

.page-about .timeline-season {
  margin: 0 0 0.5rem;
  font-family: var(--font-mono);
  font-size: var(--step-6);
  font-weight: 700;
  color: var(--paper);
  letter-spacing: 0.04em;
}

.page-about .timeline-item h3 {
  margin: 0.75rem 0 0.4rem;
  font-size: var(--step-6);
  font-weight: 700;
  color: var(--paper);
}

.page-about .timeline-item p:last-child {
  margin: 0;
  font-size: var(--step-4);
  line-height: 1.7;
  color: var(--text-faint);
}

.page-about .tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: var(--step-1);
  letter-spacing: 0.1em;
  padding: 0.2rem 0.5rem;
  background: var(--paper);
  color: var(--ink-900);
}

.page-about .tag--accent { background: var(--orange); color: var(--ink-900); }

.page-about .tag--live {
  background: transparent;
  color: var(--cyan);
  border: 1px solid var(--cyan);
}

/* 团队 */
.page-about .chapter-figure {
  margin: 0;
}

.page-about .chapter-figure--wide {
  margin-top: var(--step-8);
}

.page-about .team-stack {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--step-5);
  margin-top: var(--step-8);
}

.page-about .team-card.sheet {
  position: relative;
  padding: var(--step-6) var(--step-5);
  background: var(--surface);
  border: 1px solid var(--line);
  transition: transform 0.28s var(--ease), box-shadow 0.28s var(--ease);
}

.page-about .team-card.sheet::before {
  content: "";
  position: absolute;
  inset: 6px -6px -6px 6px;
  border: 1px solid var(--line-soft);
  z-index: -1;
  transition: inset 0.28s var(--ease);
}

.page-about .team-card.sheet:hover,
.page-about .team-card.sheet:focus-within {
  transform: translate(-4px, -4px);
  box-shadow: 0 18px 34px rgba(0, 0, 0, 0.45);
}

.page-about .team-card.sheet:hover::before { inset: 10px -10px -10px 10px; }

.page-about .team-index {
  margin: 0 0 0.5rem;
  font-family: var(--font-mono);
  font-size: var(--step-4);
  letter-spacing: 0.2em;
  color: var(--orange);
}

.page-about .team-card h3 {
  margin: 0 0 0.6rem;
  font-size: var(--step-7);
  font-weight: 800;
  color: var(--paper);
  letter-spacing: -0.01em;
}

.page-about .team-card p {
  margin: 0;
  font-size: var(--step-4);
  line-height: 1.75;
  color: var(--text-muted);
}

.page-about .team-note {
  margin-top: 0.75rem !important;
  padding-top: 0.75rem;
  border-top: 1px dashed var(--line);
  font-size: var(--step-3) !important;
  color: var(--text-faint) !important;
  opacity: 0.75;
  transition: opacity 0.25s var(--ease);
}

.page-about .team-card:hover .team-note,
.page-about .team-card:focus-within .team-note { opacity: 1; }

/* 场馆点阵 */
.page-about .dotmap-wrap {
  display: grid;
  gap: var(--step-5);
  align-items: center;
}

.page-about .dotmap {
  height: 180px;
  border: 1px solid var(--line);
  background-color: var(--surface);
  background-image:
    radial-gradient(circle, rgba(32, 227, 194, 0.75) 1.6px, transparent 1.8px),
    radial-gradient(circle, rgba(255, 90, 31, 0.55) 1.6px, transparent 1.8px);
  background-size: 26px 26px, 78px 78px;
  background-position: 0 0, 13px 13px;
  -webkit-mask-image: radial-gradient(120% 130% at 50% 50%, #000 55%, transparent 100%);
  mask-image: radial-gradient(120% 130% at 50% 50%, #000 55%, transparent 100%);
}

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

.page-about .dotmap-stats li {
  padding: 0.9rem 1rem;
  background: var(--ink-900);
  font-size: var(--step-3);
  color: var(--text-faint);
  line-height: 1.5;
}

.page-about .dotmap-stats .num {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--step-7);
  font-weight: 700;
  color: var(--paper);
  font-variant-numeric: tabular-nums;
}

/* 色板 */
.page-about .palette {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: var(--step-7) 0 0;
  padding: 1px;
  list-style: none;
  background: var(--line);
}

.page-about .swatch {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  padding: var(--step-4);
  background: var(--surface);
}

.page-about .swatch-chip {
  display: block;
  height: 54px;
  background: var(--chip);
  border: 1px solid var(--line);
}

.page-about .swatch-name {
  font-size: var(--step-4);
  font-weight: 700;
  color: var(--paper);
}

.page-about .swatch-hex {
  font-family: var(--font-mono);
  font-size: var(--step-2);
  color: var(--text-faint);
  letter-spacing: 0.05em;
}

/* 编辑判断 */
.page-about .criteria {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  margin: var(--step-7) 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
  counter-reset: none;
}

.page-about .criteria-item {
  padding: var(--step-5) 0;
  border-bottom: 1px solid var(--line-soft);
  transition: background-color 0.2s var(--ease);
}

.page-about .criteria-item:hover { background: rgba(29, 44, 66, 0.35); }

.page-about .criteria-num {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--step-2);
  letter-spacing: 0.2em;
  color: var(--orange);
  margin-bottom: 0.4rem;
}

.page-about .criteria-item h3 {
  margin: 0 0 0.35rem;
  font-size: var(--step-6);
  font-weight: 800;
  color: var(--paper);
}

.page-about .criteria-item p {
  margin: 0;
  font-size: var(--step-4);
  line-height: 1.75;
  color: var(--text-muted);
  max-width: 58ch;
}

/* 联系 */
.page-about .chapter--contact {
  padding-bottom: 0;
}

.page-about .about-cta {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--step-5);
  margin-top: var(--step-7);
  padding: var(--step-6);
  background:
    linear-gradient(135deg, rgba(255, 90, 31, 0.16), transparent 60%),
    var(--ink-700);
  border: 1px solid var(--line);
}

.page-about .cta-copy h3 {
  margin: 0 0 0.4rem;
  font-size: var(--step-7);
  font-weight: 800;
  color: var(--paper);
}

.page-about .cta-copy p {
  margin: 0;
  font-size: var(--step-4);
  line-height: 1.7;
  color: var(--text-muted);
}

.page-about .cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.page-about .btn {
  display: inline-block;
  padding: 0.75rem 1.4rem;
  font-size: var(--step-4);
  font-weight: 700;
  letter-spacing: 0.02em;
  text-decoration: none;
  border: 1px solid transparent;
  transition: transform 0.2s var(--ease), background-color 0.2s var(--ease), color 0.2s var(--ease);
}

.page-about .btn--primary {
  background: var(--orange);
  color: var(--ink-900);
}

.page-about .btn--primary:hover { transform: translateY(-2px); }

.page-about .btn--ghost {
  background: transparent;
  color: var(--paper);
  border-color: var(--print);
}

.page-about .btn--ghost:hover {
  border-color: var(--cyan);
  color: var(--cyan);
}

.page-about .about-links {
  margin: var(--step-6) 0 0;
  font-size: var(--step-4);
  line-height: 1.8;
  color: var(--text-faint);
}

.page-about .about-links a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-about a:focus-visible,
.page-about .btn:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

@media (min-width: 640px) {
  .page-about .about-meta { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .page-about .team-stack { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .page-about .palette { grid-template-columns: repeat(5, minmax(0, 1fr)); }
  .page-about .dotmap-stats { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .page-about .criteria { grid-template-columns: repeat(2, minmax(0, 1fr)); column-gap: var(--step-6); }
  .page-about .about-cta { grid-template-columns: 1.4fr auto; align-items: center; }
}

@media (min-width: 960px) {
  .page-about .about-masthead { padding-top: var(--step-10); }
  .page-about .about-title { max-width: 16ch; }

  .page-about .chapter-head {
    grid-template-columns: var(--about-rail) 1fr;
    align-items: start;
    gap: var(--step-6);
  }

  .page-about .chapter-num { font-size: var(--step-10); }

  .page-about .chapter-body {
    grid-template-columns: minmax(0, 7fr) minmax(0, 3fr);
    gap: var(--step-8);
  }

  .page-about .chapter-body .chapter-note.note {
    margin-top: 0.35rem;
    justify-self: end;
  }

  .page-about .timeline { padding-bottom: var(--step-7); }
  .page-about .timeline-item { flex: 0 0 20rem; }

  .page-about .team-stack { grid-template-columns: repeat(4, minmax(0, 1fr)); }

  .page-about .dotmap-wrap {
    grid-template-columns: minmax(0, 6fr) minmax(0, 4fr);
    gap: var(--step-7);
  }

  .page-about .dotmap { height: 100%; min-height: 220px; }

  .page-about .criteria { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .page-about .criteria-item { padding-inline: 0.75rem 0; }

  .page-about .about-cta { padding: var(--step-8); }
}

@media (prefers-reduced-motion: reduce) {
  .page-about * {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }
}
<<<END>>>

.page-about {
  --chip: transparent;
}