.page-about {
  --about-section-pad: clamp(42px, 6vw, 76px);
  --about-rule: 1px solid var(--line);
  position: relative;
  color: var(--body-ink);
  padding-bottom: clamp(40px, 7vw, 88px);
  background:
    radial-gradient(120% 58% at 90% -8%, rgba(201, 162, 39, 0.16), transparent 62%),
    radial-gradient(80% 46% at -6% 8%, rgba(178, 58, 46, 0.11), transparent 70%),
    linear-gradient(180deg, var(--ink) 0%, var(--ink-soft) 46%, var(--ink) 100%);
}

.page-about .about-top {
  padding-top: clamp(16px, 3vw, 28px);
}

.page-about .breadcrumb ol {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--fog);
}

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

.page-about .breadcrumb a:hover,
.page-about .breadcrumb a:focus-visible {
  color: var(--amber);
}

.page-about .breadcrumb li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--bronze);
}

/* 首屏 */
.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 5vw, 54px);
  padding-block: clamp(26px, 5vw, 48px) clamp(38px, 6vw, 72px);
}

.page-about .about-hero h1 {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(34px, 6.6vw, 68px);
  line-height: 1.08;
  letter-spacing: -0.015em;
}

.page-about .about-hero .lede {
  margin-top: 18px;
  max-width: 62ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.8;
  color: var(--body-ink);
}

.page-about .about-hero .tag-row {
  margin-top: 22px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-about .about-hero__facts {
  align-self: end;
  padding: clamp(20px, 3vw, 28px);
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  background:
    linear-gradient(158deg, rgba(42, 42, 46, 0.9), rgba(14, 14, 16, 0.86));
  box-shadow: var(--shadow-soft);
}

.page-about .facts-head {
  margin: 0 0 6px;
  font-size: 11px;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--gold);
}

.page-about .fact {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding: 12px 0;
  border-bottom: 1px dashed var(--line);
  font-size: 14px;
  color: var(--body-ink-dim);
}

.page-about .fact b {
  font-size: 16px;
  font-weight: 500;
  color: var(--ivory);
  text-align: right;
}

.page-about .facts-note {
  margin: 14px 0 0;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--fog);
}

/* 主布局 + 侧栏 */
.page-about .about-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 4vw, 56px);
  align-items: start;
}

.page-about .about-aside {
  order: -1;
  display: grid;
  gap: 14px;
  padding-bottom: 8px;
}

.page-about .toc__title {
  margin: 0 0 10px;
  font-size: 11px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--gold);
}

.page-about .toc__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-about .toc-link {
  display: inline-block;
  white-space: nowrap;
  padding: 8px 13px;
  border-radius: var(--pill);
  border: 1px solid var(--line);
  color: var(--body-ink-dim);
  text-decoration: none;
  font-size: 12px;
  letter-spacing: 0.04em;
  transition: color 160ms var(--ease), border-color 160ms var(--ease), background 160ms var(--ease);
}

.page-about .toc-link:hover,
.page-about .toc-link:focus-visible {
  color: var(--ink);
  background: var(--gold);
  border-color: var(--gold);
}

.page-about .aside-card {
  display: none;
}

/* 章节 */
.page-about .about-section {
  padding-block: var(--about-section-pad);
  border-top: var(--about-rule);
}

.page-about .about-section:first-of-type {
  border-top: 0;
  padding-top: 0;
}

.page-about .chapter-head {
  display: grid;
  gap: 12px;
  margin-bottom: clamp(22px, 3.4vw, 34px);
}

.page-about .chapter-index {
  font-size: 12px;
  letter-spacing: 0.24em;
  color: var(--gold);
}

.page-about .chapter-head .section-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(25px, 3.6vw, 38px);
  line-height: 1.2;
  color: var(--ivory);
}

.page-about .chapter-head .lede {
  margin: 0;
  max-width: 66ch;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--body-ink);
}

.page-about .about-prose p,
.page-about .coverage-text p {
  margin: 0 0 16px;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--body-ink);
}

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

/* 图片 */
.page-about .about-figure {
  margin: clamp(22px, 3.4vw, 32px) 0 0;
}

.page-about .about-figure .media {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--line);
  box-shadow: var(--shadow-soft);
}

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

.page-about .about-figure .media__caption {
  margin-top: 10px;
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--fog);
}

/* 团队 */
.page-about .team-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

.page-about .team-card {
  padding: 20px;
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
  background: linear-gradient(160deg, rgba(42, 42, 46, 0.72), rgba(14, 14, 16, 0.6));
}

.page-about .team-card--lead {
  border-color: var(--line-strong);
  background: linear-gradient(160deg, rgba(201, 162, 39, 0.18), rgba(58, 31, 27, 0.52));
}

.page-about .team-card--wide {
  background: linear-gradient(150deg, rgba(58, 31, 27, 0.7), rgba(14, 14, 16, 0.7));
  border-color: rgba(178, 58, 46, 0.42);
}

.page-about .team-num {
  display: block;
  font-size: 30px;
  line-height: 1;
  color: var(--gold);
  letter-spacing: 0.02em;
}

.page-about .team-role {
  margin: 10px 0 8px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 18px;
  color: var(--ivory);
}

.page-about .team-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--body-ink-dim);
}

/* 时间线 */
.page-about .tl {
  position: relative;
  padding-left: 26px;
}

.page-about .tl::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: linear-gradient(180deg, var(--gold), var(--bronze) 55%, rgba(107, 90, 46, 0.15));
}

.page-about .tl__item {
  position: relative;
  margin-bottom: 10px;
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
  background: rgba(42, 42, 46, 0.5);
  overflow: hidden;
}

.page-about .tl__item::before {
  content: "";
  position: absolute;
  left: -26px;
  top: 18px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 0 4px rgba(201, 162, 39, 0.16);
}

.page-about .tl__item summary {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 14px;
  padding: 15px 18px;
  cursor: pointer;
  list-style: none;
}

.page-about .tl__item summary::-webkit-details-marker {
  display: none;
}

.page-about .tl__item summary:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: -2px;
}

.page-about .tl__year {
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--gold);
}

.page-about .tl__title {
  font-family: var(--font-display);
  font-size: 16.5px;
  font-weight: 600;
  color: var(--ivory);
}

.page-about .tl__item[open] {
  border-color: var(--line-strong);
}

.page-about .tl__body {
  padding: 0 18px 16px;
  border-top: 1px dashed var(--line);
  padding-top: 12px;
}

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

/* 覆盖 */
.page-about .coverage-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 20px;
}

.page-about .city-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-content: start;
}

.page-about .city-chip {
  padding: 7px 13px;
  border-radius: var(--pill);
  border: 1px solid var(--line-strong);
  background: rgba(201, 162, 39, 0.1);
  color: var(--paper);
  font-size: 12.5px;
  letter-spacing: 0.08em;
}

/* 荣誉 */
.page-about .honor-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

.page-about .honor-card {
  padding: 20px;
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
  background: linear-gradient(160deg, rgba(42, 42, 46, 0.7), rgba(14, 14, 16, 0.62));
}

.page-about .honor-card--stat {
  border-color: var(--line-strong);
  background: linear-gradient(150deg, rgba(201, 162, 39, 0.16), rgba(14, 14, 16, 0.78));
}

.page-about .honor-year {
  display: block;
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--amber);
}

.page-about .honor-card h3 {
  margin: 10px 0 8px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 17px;
  line-height: 1.45;
  color: var(--ivory);
}

.page-about .honor-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--body-ink-dim);
}

.page-about .about-note {
  margin-top: 18px;
  padding: 18px 20px;
  border-left: 2px solid var(--cinnabar);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  background: rgba(58, 31, 27, 0.42);
}

.page-about .about-note p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--body-ink);
}

/* 结尾行动区 */
.page-about .about-cta {
  margin-top: clamp(34px, 5vw, 56px);
  padding: clamp(26px, 4vw, 40px);
  border-radius: var(--radius-lg);
  border: 1px solid var(--line-strong);
  background:
    radial-gradient(110% 90% at 88% 0%, rgba(232, 184, 75, 0.2), transparent 62%),
    linear-gradient(160deg, rgba(42, 42, 46, 0.88), rgba(14, 14, 16, 0.92));
}

.page-about .about-cta .section-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(23px, 3.2vw, 32px);
  line-height: 1.25;
  color: var(--ivory);
}

.page-about .about-cta .lede {
  margin: 12px 0 0;
  max-width: 60ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--body-ink);
}

.page-about .cta-links {
  margin-top: 22px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-about .cta-links .btn {
  text-decoration: none;
}

/* 侧栏卡片（桌面） */
.page-about .aside-mail {
  margin: 0 0 10px;
  font-size: 12.5px;
  word-break: break-all;
  color: var(--paper);
}

.page-about .aside-note {
  margin: 10px 0 14px;
  font-size: 12px;
  line-height: 1.7;
  color: var(--fog);
}

.page-about .aside-link {
  display: block;
  padding: 8px 0;
  border-top: 1px dashed var(--line);
  font-size: 12.5px;
  color: var(--amber);
  text-decoration: none;
}

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

@media (min-width: 720px) {
  .page-about .team-grid {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }

  .page-about .team-card {
    grid-column: span 3;
  }

  .page-about .team-card--lead {
    grid-column: span 6;
  }

  .page-about .team-card--wide {
    grid-column: span 6;
  }

  .page-about .honor-grid {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }

  .page-about .honor-card {
    grid-column: span 3;
  }

  .page-about .honor-card--stat {
    grid-column: span 6;
  }

  .page-about .coverage-grid {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.75fr);
    gap: 28px;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.18fr) minmax(0, 0.82fr);
    align-items: end;
  }

  .page-about .about-hero h1 {
    max-width: 16ch;
  }
}

@media (min-width: 1040px) {
  .page-about .about-layout {
    grid-template-columns: minmax(0, 1fr) 244px;
    gap: clamp(36px, 4vw, 60px);
  }

  .page-about .about-aside {
    order: 0;
    position: sticky;
    top: 96px;
    display: grid;
    gap: 18px;
  }

  .page-about .toc__list {
    display: grid;
    gap: 2px;
    overflow: visible;
  }

  .page-about .toc-link {
    display: block;
    border: 0;
    border-left: 1px solid var(--line);
    border-radius: 0;
    padding: 7px 12px;
    background: none;
  }

  .page-about .toc-link:hover,
  .page-about .toc-link:focus-visible {
    color: var(--amber);
    background: none;
    border-left-color: var(--gold);
  }

  .page-about .aside-card {
    display: block;
    padding: 18px;
    border-radius: var(--radius-md);
    border: 1px solid var(--line);
    background: rgba(42, 42, 46, 0.58);
  }

  .page-about .team-card {
    grid-column: span 2;
  }

  .page-about .team-card--lead {
    grid-column: span 3;
  }

  .page-about .team-card--wide {
    grid-column: span 3;
  }

  .page-about .tl__body p {
    font-size: 14.5px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .toc-link,
  .page-about .aside-link {
    transition: none;
  }
}
<<<END>>>