.page-about {
  --about-line: 2px solid var(--line);
}

/* ---------- 首屏：左叙事 右视觉 ---------- */
.page-about .about-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.5rem, 4vw, 3rem);
  padding-block: clamp(1.25rem, 3vw, 2rem) clamp(2rem, 5vw, 3.5rem);
}

.page-about .about-hero__copy h1 {
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.06;
  font-size: clamp(2.1rem, 7.4vw, 3.6rem);
  margin: 0.6rem 0 1.1rem;
  max-width: 16ch;
  text-wrap: balance;
}

.page-about .about-hero__lede {
  max-width: 36ch;
  font-size: clamp(1rem, 1.5vw, 1.1rem);
  line-height: 1.85;
  color: var(--text);
  margin: 0;
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.6rem;
}

.page-about .about-hero__media {
  margin: 0;
  border: 2px solid var(--line-strong);
  box-shadow: var(--shadow);
  background: var(--surface);
}
.page-about .about-hero__media img {
  display: block;
  width: 100%;
  height: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}
.page-about .about-hero__media .media__cap {
  display: block;
  padding: 0.6rem 0.85rem;
  font-size: var(--t--1);
  letter-spacing: 0.08em;
  color: var(--muted);
}

/* ---------- 吸顶章节目录 ---------- */
.page-about .about-anchors {
  position: sticky;
  top: 0;
  z-index: 6;
  background: var(--bg);
  border-block: 2px solid var(--line-strong);
  margin-inline: calc(var(--gutter) * -1);
  padding-inline: var(--gutter);
}
.page-about .about-anchors ul {
  display: flex;
  gap: 0.2rem;
  overflow-x: auto;
  margin: 0;
  padding: 0.5rem 0;
  list-style: none;
  scrollbar-width: none;
}
.page-about .about-anchors ul::-webkit-scrollbar {
  display: none;
}
.page-about .about-anchors li {
  flex: 0 0 auto;
}
.page-about .about-anchors a {
  display: block;
  padding: 0.4rem 0.7rem;
  border: 2px solid transparent;
  font-size: var(--t--1);
  letter-spacing: 0.08em;
  color: var(--muted);
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.16s var(--ease), border-color 0.16s var(--ease);
}
.page-about .about-anchors a:hover,
.page-about .about-anchors a:focus-visible {
  color: var(--text);
  border-color: var(--cyan);
  outline: none;
}

/* ---------- 章节通用骨架 ---------- */
.page-about .chapter {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.25rem;
  padding-block: clamp(2.25rem, 6vw, 4rem);
  border-top: var(--about-line);
  scroll-margin-top: 4.5rem;
}

.page-about .chapter__head {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  align-items: flex-start;
}

.page-about .chapter__title {
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.14;
  font-size: clamp(1.5rem, 4.4vw, 2.15rem);
  margin: 0;
  max-width: 15ch;
}

.page-about .figure-number {
  display: inline-grid;
  place-items: center;
  min-width: 2.3rem;
  height: 2.3rem;
  padding-inline: 0.35rem;
  border: 2px solid var(--line-strong);
  background: var(--gold);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: var(--t--1);
  font-weight: 700;
  letter-spacing: 0.02em;
  box-shadow: var(--shadow-soft);
}

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

.page-about .chapter__intro {
  max-width: 36ch;
  margin: 0 0 1.2rem;
  line-height: 1.85;
}

.page-about .chapter__body .prose p,
.page-about .chapter__body > p {
  max-width: 36ch;
  line-height: 1.85;
  margin: 0 0 1rem;
}

.page-about .chapter__body a {
  color: var(--link);
  text-decoration: underline;
  text-underline-offset: 0.22em;
}
.page-about .chapter__body a:hover {
  color: var(--accent);
}

/* ---------- 版本时间轴 ---------- */
.page-about .timeline {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .timeline__item {
  position: relative;
  padding-left: 3.1rem;
  padding-bottom: 0.85rem;
}
.page-about .timeline__item::before {
  content: "";
  position: absolute;
  left: 1.08rem;
  top: 2.5rem;
  bottom: 0;
  width: 2px;
  background: var(--line);
}
.page-about .timeline__item:last-child::before {
  display: none;
}

.page-about .timeline__v {
  position: absolute;
  left: 0;
  top: 0.45rem;
  display: grid;
  place-items: center;
  width: 2.16rem;
  height: 2.16rem;
  border: 2px solid var(--line-strong);
  background: var(--surface);
  color: var(--gold);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.page-about .timeline__node summary {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.15rem 0.7rem;
  padding: 0.6rem 0.85rem;
  border: 2px solid var(--line);
  background: var(--surface);
  cursor: pointer;
  list-style: none;
  transition: border-color 0.18s var(--ease), transform 0.18s var(--ease), box-shadow 0.18s var(--ease);
}
.page-about .timeline__node summary::-webkit-details-marker {
  display: none;
}
.page-about .timeline__node summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 1.1rem;
  line-height: 1;
  color: var(--accent);
}
.page-about .timeline__node[open] summary::after {
  content: "−";
}
.page-about .timeline__node summary:hover {
  border-color: var(--cyan);
  transform: translateX(3px);
}
.page-about .timeline__node summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}
.page-about .timeline__node[open] summary {
  border-color: var(--accent);
  box-shadow: var(--shadow-soft);
}

.page-about .timeline__when {
  font-family: var(--font-mono);
  font-size: var(--t--1);
  color: var(--link);
  letter-spacing: 0.04em;
}
.page-about .timeline__name {
  font-weight: 700;
  font-size: 0.98rem;
}

.page-about .timeline__panel {
  margin-top: 0.55rem;
  padding: 0.85rem 1rem;
  background: var(--surface-2);
  border-left: 4px solid var(--accent);
}
.page-about .timeline__panel p {
  margin: 0;
  line-height: 1.8;
  max-width: 40ch;
}

/* ---------- 团队 ---------- */
.page-about .crew-photo {
  margin: 0 0 1.4rem;
  border: 2px solid var(--line-strong);
  background: var(--surface);
  box-shadow: var(--shadow-soft);
}
.page-about .crew-photo img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 7;
  object-fit: cover;
}
.page-about .crew-photo .media__cap {
  display: block;
  padding: 0.55rem 0.85rem;
  font-size: var(--t--1);
  letter-spacing: 0.06em;
  color: var(--muted);
}

.page-about .crew {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.9rem;
}

.page-about .crew__card {
  border: 2px solid var(--line-strong);
  background: var(--surface);
  padding: 1rem;
  box-shadow: var(--shadow-soft);
  transition: transform 0.18s var(--ease), box-shadow 0.18s var(--ease), border-color 0.18s var(--ease);
}
.page-about .crew__card:hover,
.page-about .crew__card:focus,
.page-about .crew__card:focus-within {
  transform: translate(-2px, -2px);
  box-shadow: var(--shadow);
  border-color: var(--accent);
  outline: none;
}

.page-about .crew__num {
  margin: 0;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(2.1rem, 6vw, 2.9rem);
  line-height: 1;
  color: var(--gold);
}
.page-about .crew__role {
  margin: 0.35rem 0 0.3rem;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.1rem;
  letter-spacing: 0.01em;
}
.page-about .crew__line {
  margin: 0;
  font-size: 0.9rem;
  color: var(--muted);
  line-height: 1.7;
}
.page-about .crew__duties {
  list-style: none;
  margin: 0;
  padding: 0;
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  transition: max-height 0.22s var(--ease), opacity 0.22s var(--ease), margin-top 0.22s var(--ease);
}
.page-about .crew__card:hover .crew__duties,
.page-about .crew__card:focus .crew__duties,
.page-about .crew__card:focus-within .crew__duties {
  max-height: 16rem;
  opacity: 1;
  margin-top: 0.7rem;
}
.page-about .crew__duties li {
  position: relative;
  padding-left: 0.9rem;
  margin-bottom: 0.4rem;
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--text);
}
.page-about .crew__duties li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 0.4rem;
  height: 0.4rem;
  background: var(--accent);
}

/* ---------- 内容与数据节奏 ---------- */
.page-about .rhythm {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
  margin-bottom: 1.4rem;
}
.page-about .rhythm__cell {
  border: 2px solid var(--line-strong);
  background: var(--surface);
  padding: 0.85rem 0.9rem 1rem;
  box-shadow: var(--shadow-soft);
}
.page-about .rhythm__cell--cyan {
  background: linear-gradient(160deg, var(--cyan-deep), var(--moss));
  border-color: var(--ink);
}
.page-about .rhythm__num {
  display: inline-block;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(1.7rem, 5vw, 2.3rem);
  line-height: 1;
  color: var(--gold);
  margin-right: 0.25rem;
}
.page-about .rhythm__cell--cyan .rhythm__num {
  color: var(--paper);
}
.page-about .rhythm__unit {
  font-size: var(--t--1);
  letter-spacing: 0.08em;
  color: var(--muted);
}
.page-about .rhythm__cell--cyan .rhythm__unit {
  color: rgba(245, 242, 234, 0.82);
}
.page-about .rhythm__label {
  margin: 0.5rem 0 0;
  font-size: 0.84rem;
  line-height: 1.65;
  color: var(--muted);
}
.page-about .rhythm__cell--cyan .rhythm__label {
  color: rgba(245, 242, 234, 0.92);
}

/* ---------- 观赛夜（酒红区块） ---------- */
.page-about .about-night {
  background: var(--wine);
  color: var(--paper);
  border: 2px solid var(--ink);
  box-shadow: var(--shadow);
  margin-block: clamp(1.5rem, 4vw, 2.5rem);
  padding: clamp(1.15rem, 4vw, 2.4rem);
}
.page-about .about-night__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.4rem;
  align-items: start;
}
.page-about .about-night__mark {
  background: var(--amber);
  border-color: var(--ink);
  color: var(--ink);
}
.page-about .about-night__title {
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.14;
  font-size: clamp(1.5rem, 4.4vw, 2.15rem);
  margin: 0.7rem 0 0.9rem;
}
.page-about .about-night__copy p {
  margin: 0 0 0.9rem;
  line-height: 1.85;
  max-width: 36ch;
  color: rgba(245, 242, 234, 0.94);
}
.page-about .about-night__copy a {
  color: var(--paper);
  text-decoration: underline;
  text-underline-offset: 0.22em;
}
.page-about .about-night__copy a:hover {
  color: var(--amber);
}
.page-about .about-night__note {
  border-top: 2px solid rgba(245, 242, 234, 0.35);
  padding-top: 0.85rem;
  font-size: 0.92rem;
}
.page-about .about-night__media {
  margin: 0;
  border: 2px solid var(--ink);
  background: var(--ink);
}
.page-about .about-night__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}
.page-about .about-night__media .media__cap {
  display: block;
  padding: 0.55rem 0.8rem;
  font-size: var(--t--1);
  letter-spacing: 0.08em;
  color: rgba(245, 242, 234, 0.8);
}

/* ---------- 覆盖与联络 ---------- */
.page-about .locate {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.4rem;
  margin: 1.2rem 0 1.6rem;
}
.page-about .cities {
  display: block;
  width: 100%;
  max-width: 400px;
  height: auto;
  border: 2px solid var(--line-strong);
  background: var(--surface);
  padding: 0.5rem;
  box-shadow: var(--shadow-soft);
}
.page-about .cities__land {
  fill: var(--surface-2);
  stroke: var(--line-strong);
  stroke-width: 2;
  stroke-linejoin: round;
}
.page-about .cities__pin circle {
  fill: var(--orange);
  stroke: var(--ink);
  stroke-width: 2;
}
.page-about .cities__pin text {
  fill: var(--text);
  font-family: var(--font-body);
  font-size: 12px;
  letter-spacing: 0.04em;
}

.page-about .locate__info h3 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1rem;
  letter-spacing: 0.04em;
  margin: 0 0 0.4rem;
  color: var(--gold);
}
.page-about .locate__info h3 + p {
  margin-top: 0;
}
.page-about .locate__info p {
  margin: 0 0 0.4rem;
  line-height: 1.75;
  max-width: 34ch;
}
.page-about .locate__info h3:not(:first-child) {
  margin-top: 1.1rem;
}
.page-about .locate__hint {
  font-size: 0.84rem;
  color: var(--muted);
}
.page-about .locate__icp {
  font-family: var(--font-mono);
  font-size: var(--t--1);
  letter-spacing: 0.06em;
  color: var(--muted);
  margin-top: 0.8rem;
}
.page-about .copy-mail {
  margin: 0.5rem 0 0.6rem;
}

/* ---------- 收尾 CTA ---------- */
.page-about .about-cta {
  border-top: 2px solid var(--line-strong);
  padding-block: clamp(2rem, 5vw, 3.25rem);
  margin-top: clamp(1rem, 3vw, 2rem);
}
.page-about .about-cta__title {
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.14;
  font-size: clamp(1.45rem, 4.2vw, 2rem);
  margin: 0 0 0.8rem;
  max-width: 18ch;
}
.page-about .about-cta__text {
  margin: 0;
  max-width: 38ch;
  line-height: 1.85;
  color: var(--muted);
}
.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.4rem;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-about .crew {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-about .rhythm {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-about .about-hero {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    align-items: end;
    gap: clamp(2rem, 4vw, 3.5rem);
  }
  .page-about .about-anchors ul {
    justify-content: flex-start;
  }
  .page-about .chapter {
    grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
    gap: clamp(2rem, 5vw, 4.5rem);
  }
  .page-about .chapter__head {
    align-self: start;
  }
  .page-about .crew {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-about .rhythm {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .page-about .about-night__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: clamp(1.5rem, 4vw, 3rem);
    align-items: center;
  }
  .page-about .locate {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
    gap: clamp(1.5rem, 4vw, 3rem);
    align-items: start;
  }
}

@media (hover: none) {
  .page-about .crew__duties {
    max-height: none;
    opacity: 1;
    margin-top: 0.7rem;
  }
  .page-about .timeline__node summary:hover {
    transform: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-anchors a,
  .page-about .timeline__node summary,
  .page-about .crew__card,
  .page-about .crew__duties {
    transition: none;
  }
  .page-about .timeline__node summary:hover,
  .page-about .crew__card:hover,
  .page-about .crew__card:focus {
    transform: none;
  }
}
<<<END>>>