.page-about {
  --about-pad: 20px;
  background: var(--walnut);
  color: var(--cream);
  font-family: var(--font-body);
  overflow-x: clip;
}

.page-about img {
  max-width: 100%;
}

.page-about a {
  color: var(--gold);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

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

.page-about .shell {
  padding-inline: var(--about-pad);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: calc(var(--header-h) + 28px) 0 56px;
  background:
    radial-gradient(120% 70% at 88% -10%, rgba(255, 77, 148, 0.13), transparent 62%),
    radial-gradient(110% 70% at -12% 26%, rgba(22, 56, 46, 0.9), transparent 62%),
    var(--walnut);
}

.page-about .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0 0 26px;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--muted);
}

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

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

.page-about .about-title {
  margin: 0 0 22px;
  max-width: 15em;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(38px, 8.6vw, 88px);
  line-height: 1.06;
  letter-spacing: -0.01em;
  color: var(--cream);
  text-shadow: 0 18px 40px rgba(0, 0, 0, 0.45);
}

.page-about .about-lead {
  max-width: 48ch;
  margin: 0;
  font-size: 16px;
  line-height: 1.85;
  color: var(--muted);
}

.page-about .about-facts {
  list-style: none;
  margin: 30px 0 0;
  padding: 22px 0 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px 14px;
  border-top: 1px solid var(--line);
}

.page-about .fact-num {
  display: block;
  font-family: var(--font-mono);
  font-size: 26px;
  letter-spacing: 0.02em;
  color: var(--gold);
  line-height: 1.2;
}

.page-about .fact-label {
  display: block;
  margin-top: 4px;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--muted);
}

.page-about .about-hero-media {
  margin: 34px 0 0;
  border: 1px solid var(--line);
  background: var(--carbon);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.5);
}

.page-about .about-hero-media img {
  display: block;
  width: 100%;
  height: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  filter: saturate(0.92) contrast(1.04);
}

.page-about .about-hero-media figcaption {
  padding: 12px 14px;
  font-size: 12px;
  line-height: 1.7;
  color: var(--muted);
  border-top: 1px solid var(--line-soft);
}

/* ---------- 双栏长文 ---------- */
.page-about .about-body {
  padding: 0 0 64px;
}

.page-about .about-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
  align-items: start;
}

.page-about .about-index {
  padding: 8px 0 0;
}

.page-about .about-index-head {
  margin: 0 0 12px;
  color: var(--gold);
  font-family: var(--font-mono);
  letter-spacing: 0.16em;
}

.page-about .about-index-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 10px;
}

.page-about .about-index-link {
  display: flex;
  align-items: baseline;
  gap: 9px;
  padding: 11px 0;
  border-bottom: 1px solid var(--line-soft);
  color: var(--muted);
  font-size: 13px;
  text-decoration: none;
  transition: color var(--dur) var(--ease);
}

.page-about .about-index-link::before {
  content: "";
  flex: 0 0 auto;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--stone);
  transform: translateY(-2px);
  transition: background var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-about .about-index-link:hover,
.page-about .about-index-link:focus-visible {
  color: var(--cream);
}

.page-about .about-index-link:hover::before,
.page-about .about-index-link:focus-visible::before {
  background: var(--magenta);
  box-shadow: 0 0 10px rgba(255, 77, 148, 0.6);
}

.page-about .about-index-year {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--gold);
  letter-spacing: 0.06em;
}

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

/* ---------- 章节 ---------- */
.page-about .about-section {
  padding: 44px 0 4px;
  scroll-margin-top: calc(var(--header-h) + 20px);
}

.page-about .about-section--panel {
  margin-top: 44px;
  padding: 34px 20px 32px;
  background: var(--ink-green-deep);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-about .t-h2 {
  margin: 10px 0 18px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(26px, 5vw, 40px);
  line-height: 1.22;
  letter-spacing: -0.01em;
  color: var(--cream);
}

.page-about .section-label {
  color: var(--gold);
  font-family: var(--font-mono);
  letter-spacing: 0.16em;
}

.page-about .prose p {
  margin: 0 0 1.1em;
  font-size: 16px;
  line-height: 1.85;
  color: var(--muted);
}

.page-about .about-intro {
  margin: 0 0 8px;
  font-size: 16px;
  line-height: 1.85;
  color: var(--muted);
}

.page-about .about-quote {
  margin: 28px 0 0;
  padding: 6px 0 6px 18px;
  border-left: 4px solid var(--magenta);
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(20px, 3.4vw, 30px);
  line-height: 1.5;
  color: var(--cream);
}

/* ---------- 四件事清单 ---------- */
.page-about .about-work {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  counter-reset: none;
}

.page-about .about-work .index-item {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 2px 12px;
  padding: 20px 0;
  border-top: 1px solid var(--line-soft);
}

.page-about .about-work .index-num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--magenta);
}

.page-about .about-work .index-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 20px;
  line-height: 1.4;
  color: var(--cream);
}

.page-about .about-work .index-desc {
  grid-column: 2;
  margin: 6px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 时间线 ---------- */
.page-about .about-timeline {
  list-style: none;
  margin: 26px 0 0;
  padding: 0 0 0 20px;
  border-left: 1px solid var(--line);
}

.page-about .tl-item {
  position: relative;
  padding: 0 0 26px;
}

.page-about .tl-item:last-child {
  padding-bottom: 0;
}

.page-about .tl-item::before {
  content: "";
  position: absolute;
  left: -25px;
  top: 7px;
  width: 9px;
  height: 9px;
  background: var(--gold);
  box-shadow: 0 0 0 3px rgba(217, 179, 108, 0.16);
  transition: background var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-about .tl-year {
  display: block;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--teal);
}

.page-about .tl-title {
  margin: 5px 0 4px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 18px;
  line-height: 1.4;
  color: var(--cream);
}

.page-about .tl-note {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
  transition: color var(--dur) var(--ease);
}

.page-about .tl-item:hover::before,
.page-about .tl-item:focus-within::before {
  background: var(--magenta);
  box-shadow: 0 0 0 3px rgba(255, 77, 148, 0.2);
}

.page-about .tl-item:hover .tl-note,
.page-about .tl-item:focus-within .tl-note {
  color: var(--cream);
}

/* ---------- 图组 ---------- */
.page-about .about-media {
  margin: 26px 0 0;
  border: 1px solid var(--line);
  background: var(--carbon);
  box-shadow: 0 18px 46px rgba(0, 0, 0, 0.45);
}

.page-about .about-media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  aspect-ratio: 3 / 2;
  filter: saturate(0.92) contrast(1.05);
}

.page-about .about-media figcaption {
  padding: 12px 14px;
  border-top: 1px solid var(--line-soft);
  font-size: 12px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
  margin: 26px 0 0;
}

.page-about .team-card {
  padding: 20px 18px;
  background: var(--walnut-deep);
  border: 2px solid rgba(217, 179, 108, 0.42);
  box-shadow: 8px 8px 0 var(--carbon);
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .team-card:hover {
  transform: translateY(-1px);
  border-color: var(--gold);
}

.page-about .team-num {
  display: block;
  font-family: var(--font-mono);
  font-size: 30px;
  line-height: 1.1;
  color: var(--gold);
}

.page-about .team-role {
  margin: 6px 0 0;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--teal);
}

.page-about .team-card p:last-child {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 联系信息 ---------- */
.page-about .about-contact {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-about .contact-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 4px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-about .contact-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--gold);
}

.page-about .contact-value {
  font-size: 15px;
  line-height: 1.7;
  color: var(--cream);
  word-break: break-word;
}

.page-about .about-next {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}

/* ---------- 平板 ---------- */
@media (min-width: 720px) {
  .page-about {
    --about-pad: 40px;
  }

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

  .page-about .about-hero-media img {
    aspect-ratio: 16 / 9;
  }

  .page-about .about-index-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0 18px;
  }

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

  .page-about .about-section--panel {
    padding: 44px 36px 40px;
  }

  .page-about .about-team {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
  }

  .page-about .contact-row {
    grid-template-columns: 140px minmax(0, 1fr);
    gap: 12px;
    align-items: baseline;
  }
}

/* ---------- 桌面：左索引 + 右长文 ---------- */
@media (min-width: 1024px) {
  .page-about {
    --about-pad: 64px;
  }

  .page-about .about-hero {
    padding-bottom: 72px;
  }

  .page-about .about-lead {
    max-width: 52ch;
    font-size: 17px;
  }

  .page-about .about-hero-media img {
    aspect-ratio: 21 / 9;
  }

  .page-about .about-layout {
    grid-template-columns: minmax(0, 280px) minmax(0, 1fr);
    gap: 72px;
  }

  .page-about .about-index {
    position: sticky;
    top: calc(var(--header-h) + 24px);
    padding-top: 52px;
  }

  .page-about .about-index-list {
    grid-template-columns: minmax(0, 1fr);
    gap: 0;
  }

  .page-about .about-index-link {
    font-size: 14px;
  }

  .page-about .about-section {
    padding-top: 56px;
  }

  .page-about .about-section:first-child {
    padding-top: 52px;
  }

  .page-about .about-section--panel {
    margin-top: 52px;
    padding: 48px 44px 44px;
  }

  .page-about .prose p {
    max-width: 60ch;
  }

  .page-about .about-timeline {
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 0 18px;
    padding: 26px 0 0;
    border-left: 0;
    border-top: 1px solid var(--line);
  }

  .page-about .tl-item {
    padding: 0;
  }

  .page-about .tl-item::before {
    left: 0;
    top: -31px;
  }

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

  .page-about .about-media img {
    aspect-ratio: 16 / 10;
    max-height: 420px;
  }

  .page-about .about-media--team img {
    aspect-ratio: 21 / 9;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-index-link,
  .page-about .about-index-link::before,
  .page-about .tl-item::before,
  .page-about .tl-note,
  .page-about .team-card {
    transition: none;
  }

  .page-about .team-card:hover {
    transform: none;
  }
}
<<<END>>>