.page-about {
  background: var(--ink);
  color: var(--text);
  overflow-x: hidden;
}

.page-about .about-crumb-wrap {
  padding-top: 22px;
}

.page-about .about-crumbs-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .05em;
  color: var(--text-mute);
}

.page-about .about-crumbs-list li + li::before {
  content: "/";
  margin-right: 10px;
  color: rgba(168, 149, 114, .5);
}

.page-about .about-crumbs-list a {
  color: var(--text-mute);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .about-crumbs-list a:hover {
  color: var(--gold);
  border-bottom-color: var(--hairline);
}

.page-about .about-crumbs-list li[aria-current] {
  color: var(--rice);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: clamp(34px, 7vw, 76px) 0 0;
  overflow: hidden;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: -18%;
  right: -28%;
  width: 70vw;
  height: 70vw;
  max-width: 720px;
  max-height: 720px;
  border-radius: 50%;
  background: radial-gradient(circle at 42% 42%, rgba(47, 122, 104, .34), rgba(11, 13, 12, 0) 68%);
  pointer-events: none;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  left: -16%;
  bottom: 6%;
  width: 46vw;
  height: 46vw;
  max-width: 420px;
  max-height: 420px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(217, 119, 74, .16), transparent 70%);
  pointer-events: none;
}

.page-about .about-hero-inner {
  position: relative;
  z-index: 2;
}

.page-about .about-eyebrow {
  color: var(--mist);
}

.page-about .about-hero-title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-size: clamp(38px, 9.4vw, 92px);
  line-height: 1.02;
  letter-spacing: -.02em;
  color: var(--rice);
}

.page-about .about-hero-title em {
  font-style: normal;
  background: var(--grad-gold);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.page-about .about-hero-grid {
  margin-top: clamp(22px, 4vw, 38px);
  display: grid;
  gap: clamp(24px, 4vw, 40px);
}

.page-about .about-hero-lede {
  max-width: 48ch;
  margin: 0;
  color: var(--text-dim);
  font-size: clamp(15px, 2.4vw, 18px);
  line-height: 1.9;
}

.page-about .about-hero-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px 20px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-hero-stats li {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding-top: 12px;
  border-top: 1px solid var(--hairline);
}

.page-about .about-stat-num {
  font-family: var(--font-display);
  font-size: clamp(24px, 4vw, 32px);
  line-height: 1;
  color: var(--gold);
  letter-spacing: -.01em;
}

.page-about .about-stat-unit {
  margin-left: 3px;
  font-family: var(--font-body);
  font-size: 12px;
  color: var(--mist);
  letter-spacing: 0;
}

.page-about .about-stat-label {
  font-size: 12.5px;
  letter-spacing: .06em;
  color: var(--text-mute);
}

.page-about .about-hero-figure {
  position: relative;
  z-index: 1;
  max-width: var(--width);
  margin: clamp(30px, 6vw, 58px) auto 0;
  padding: 0 var(--gutter);
}

.page-about .about-hero-figure img {
  display: block;
  width: 100%;
  height: clamp(210px, 44vw, 520px);
  object-fit: cover;
  border-radius: var(--radius-l);
  box-shadow: var(--shadow-1);
  filter: saturate(.88) contrast(1.04);
}

.page-about .about-caption {
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .07em;
  color: var(--mist);
}

/* ---------- 章节索引条 ---------- */
.page-about .about-jump {
  margin-top: clamp(26px, 5vw, 44px);
  border-top: 1px solid var(--hairline-soft);
  border-bottom: 1px solid var(--hairline-soft);
  background: linear-gradient(180deg, rgba(20, 51, 45, .5), rgba(11, 13, 12, .2));
}

.page-about .about-jump-inner {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 14px 0;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-about .about-jump-inner::-webkit-scrollbar {
  display: none;
}

.page-about .about-jump-inner li {
  flex: 0 0 auto;
}

.page-about .about-jump-inner a {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 15px;
  border: 1px solid var(--hairline-soft);
  border-radius: 999px;
  color: var(--text-dim);
  font-size: 13.5px;
  text-decoration: none;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-about .about-jump-inner a:hover,
.page-about .about-jump-inner a:focus-visible {
  color: var(--rice);
  border-color: var(--hairline);
  background: rgba(242, 233, 216, .05);
}

.page-about .about-jump-inner .mono {
  color: var(--gold);
  font-size: 11px;
  letter-spacing: .1em;
}

/* ---------- 通用章节文字 ---------- */
.page-about .about-head {
  margin-bottom: clamp(20px, 3vw, 30px);
}

.page-about .about-h2 {
  margin: 10px 0 14px;
  font-family: var(--font-display);
  font-size: clamp(27px, 4.6vw, 46px);
  line-height: 1.16;
  letter-spacing: -.01em;
  color: var(--rice);
}

.page-about .about-h2-dark {
  color: var(--ink);
}

.page-about .about-p {
  max-width: 62ch;
  margin: 0 0 12px;
  color: var(--text-dim);
  font-size: 15.5px;
  line-height: 1.88;
}

.page-about .about-p-dark {
  color: rgba(11, 13, 12, .74);
}

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

/* ---------- 长卷：会馆来路 ---------- */
.page-about .about-chronicle {
  padding: clamp(46px, 9vw, 106px) 0 clamp(40px, 7vw, 84px);
}

.page-about .about-chronicle-grid {
  display: grid;
  gap: clamp(24px, 4vw, 40px);
}

.page-about .about-rail-label {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .26em;
  color: var(--mist);
}

.page-about .about-rail-list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 4px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-about .about-rail-list::-webkit-scrollbar {
  display: none;
}

.page-about .about-rail-list li {
  flex: 0 0 auto;
}

.page-about .about-rail-list a {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 7px 12px;
  border-radius: 8px;
  color: var(--text-dim);
  font-size: 13px;
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-about .about-rail-list a:hover,
.page-about .about-rail-list a:focus-visible {
  color: var(--gold);
  background: rgba(200, 164, 92, .08);
}

.page-about .about-rail-list .mono {
  color: var(--gold);
  font-size: 11.5px;
  letter-spacing: .08em;
}

.page-about .about-milestone {
  position: relative;
  padding: 0 0 26px 26px;
  border-left: 1px solid var(--hairline-soft);
}

.page-about .about-milestone:last-child {
  padding-bottom: 0;
  border-left-color: transparent;
}

.page-about .about-milestone::before {
  content: "";
  position: absolute;
  left: -4px;
  top: 8px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 0 4px rgba(200, 164, 92, .12);
}

.page-about .about-milestone-year {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .16em;
  color: var(--gold);
}

.page-about .about-milestone h3 {
  margin: 6px 0 8px;
  font-family: var(--font-display);
  font-size: clamp(19px, 3vw, 24px);
  line-height: 1.3;
  color: var(--rice);
}

.page-about .about-milestone p:not(.about-milestone-year) {
  max-width: 56ch;
  margin: 0;
  color: var(--text-dim);
  font-size: 15px;
  line-height: 1.85;
}

.page-about .about-figure {
  margin: 4px 0 32px;
}

.page-about .about-figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius-m);
  border: 1px solid var(--hairline-soft);
  object-fit: cover;
  filter: saturate(.9);
}

.page-about .about-figure figcaption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  line-height: 1.7;
  letter-spacing: .05em;
  color: var(--mist);
}

/* ---------- 服务范围 ---------- */
.page-about .about-scope {
  position: relative;
  padding: clamp(46px, 9vw, 106px) 0;
  background:
    radial-gradient(circle at 88% 6%, rgba(47, 122, 104, .14), transparent 46%),
    radial-gradient(circle at 4% 92%, rgba(217, 119, 74, .12), transparent 44%),
    var(--rice);
  color: var(--ink);
}

.page-about .about-eyebrow-dark {
  color: var(--gold-deep);
}

.page-about .about-scope-grid {
  display: grid;
  gap: clamp(28px, 5vw, 52px);
}

.page-about .about-layers {
  border-top: 1px solid rgba(11, 13, 12, .16);
}

.page-about .about-layer {
  border-bottom: 1px solid rgba(11, 13, 12, .16);
}

.page-about .about-layer summary {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 17px 0;
  cursor: pointer;
  list-style: none;
}

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

.page-about .about-layer summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--gold-deep);
  transition: transform var(--dur) var(--ease);
}

.page-about .about-layer[open] summary::after {
  content: "−";
}

.page-about .about-layer-num {
  flex: 0 0 auto;
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--peacock);
}

.page-about .about-layer-name {
  font-family: var(--font-display);
  font-size: clamp(18px, 3vw, 23px);
  line-height: 1.3;
  color: var(--ink);
}

.page-about .about-layer-range {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .04em;
  color: rgba(11, 13, 12, .48);
}

.page-about .about-layer-body {
  padding: 0 0 20px 26px;
}

.page-about .about-layer-body p {
  max-width: 54ch;
  margin: 0;
  color: rgba(11, 13, 12, .74);
  font-size: 15px;
  line-height: 1.88;
}

.page-about .about-rings {
  padding: 16px;
  border: 1px solid rgba(11, 13, 12, .14);
  border-radius: var(--radius-l);
  background: linear-gradient(158deg, rgba(47, 122, 104, .1), rgba(200, 164, 92, .14));
}

.page-about .about-rings svg {
  display: block;
  width: 100%;
  height: auto;
}

.page-about .about-legend {
  display: grid;
  gap: 9px;
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
  font-size: 13.5px;
  color: rgba(11, 13, 12, .76);
}

.page-about .about-legend li {
  display: flex;
  align-items: center;
  gap: 9px;
}

.page-about .about-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex: 0 0 auto;
}

.page-about .about-dot--core { background: var(--turquoise); }
.page-about .about-dot--gold { background: var(--gold); }
.page-about .about-dot--peacock { background: var(--peacock); }
.page-about .about-dot--copper { background: var(--copper); }

.page-about .about-aside-note {
  margin: 16px 0 0;
  font-size: 13px;
  line-height: 1.8;
  color: rgba(11, 13, 12, .6);
}

/* ---------- 四季 ---------- */
.page-about .about-seasons {
  padding: clamp(46px, 9vw, 106px) 0 clamp(42px, 7vw, 84px);
  background: linear-gradient(180deg, var(--turquoise) 0%, #0d1f1b 62%, var(--ink) 100%);
}

.page-about .about-season-track {
  display: flex;
  gap: 14px;
  margin: 0;
  padding: 4px 0 20px;
  list-style: none;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scrollbar-width: thin;
  scrollbar-color: rgba(200, 164, 92, .4) transparent;
}

.page-about .about-season-card {
  flex: 0 0 min(78vw, 292px);
  scroll-snap-align: start;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 20px 20px 22px;
  border: 1px solid var(--hairline-soft);
  border-top: 3px solid var(--hairline);
  border-radius: var(--radius-m);
  background: rgba(242, 233, 216, .045);
  box-shadow: var(--shadow-1);
}

.page-about .about-season-num {
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--gold);
}

.page-about .about-season-card h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(19px, 3vw, 23px);
  line-height: 1.32;
  color: var(--rice);
}

.page-about .about-season-card p {
  margin: 0;
  color: var(--text-dim);
  font-size: 14.5px;
  line-height: 1.82;
}

.page-about .about-season-tag {
  align-self: flex-start;
  margin-top: auto;
  font-family: var(--font-mono);
  font-size: 11.5px;
}

.page-about .about-season-card:nth-child(1) { border-top-color: rgba(200, 164, 92, .8); }
.page-about .about-season-card:nth-child(2) { border-top-color: rgba(47, 122, 104, .85); }
.page-about .about-season-card:nth-child(2) .about-season-num { color: #6FB6A2; }
.page-about .about-season-card:nth-child(3) { border-top-color: rgba(217, 119, 74, .85); }
.page-about .about-season-card:nth-child(3) .about-season-num { color: var(--sunset); }
.page-about .about-season-card:nth-child(4) { border-top-color: rgba(232, 214, 176, .6); }
.page-about .about-season-card:nth-child(4) .about-season-num { color: var(--rice-2); }

.page-about .about-track-hint {
  margin: 0 0 18px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .08em;
  color: var(--mist);
}

.page-about .about-season-link {
  margin: 0;
}

/* ---------- 团队与伙伴 ---------- */
.page-about .about-team {
  padding: clamp(46px, 9vw, 106px) 0 clamp(42px, 7vw, 84px);
}

.page-about .about-team-grid {
  display: grid;
  gap: clamp(28px, 5vw, 48px);
}

.page-about .about-team-list {
  display: grid;
  margin: 0 0 clamp(26px, 4vw, 40px);
  padding: 0;
  list-style: none;
}

.page-about .about-team-list li {
  display: grid;
  gap: 4px;
  padding: 14px 0;
  border-top: 1px solid var(--hairline-soft);
  font-size: 14.8px;
  line-height: 1.8;
  color: var(--text-dim);
}

.page-about .about-team-list li:last-child {
  border-bottom: 1px solid var(--hairline-soft);
}

.page-about .about-team-label {
  font-size: 11.5px;
  letter-spacing: .12em;
  color: var(--gold);
}

.page-about .about-eco {
  padding-top: clamp(20px, 3vw, 30px);
}

.page-about .about-eco-title {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-size: clamp(20px, 3.2vw, 26px);
  color: var(--rice);
}

.page-about .about-eco-figure {
  margin-top: 18px;
  padding: 14px;
  border: 1px solid var(--hairline-soft);
  border-radius: var(--radius-m);
  background: var(--grad-night);
}

.page-about .about-eco-figure svg {
  display: block;
  width: 100%;
  height: auto;
}

.page-about .about-figure--tall {
  margin-top: 0;
}

.page-about .about-figure--tall img {
  height: clamp(300px, 62vw, 520px);
}

.page-about .about-quote {
  margin-top: 18px;
  padding: 18px 20px;
  border-left: 2px solid var(--gold);
  background: rgba(242, 233, 216, .04);
  border-radius: 0 var(--radius-s) var(--radius-s) 0;
}

.page-about .about-quote p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--text-dim);
}

/* ---------- 到访 ---------- */
.page-about .about-visit {
  padding: 0 0 clamp(50px, 9vw, 110px);
}

.page-about .about-visit-card {
  position: relative;
  overflow: hidden;
  padding: clamp(24px, 4.5vw, 52px);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-l);
  background:
    radial-gradient(circle at 92% 10%, rgba(217, 119, 74, .18), transparent 48%),
    radial-gradient(circle at 6% 96%, rgba(47, 122, 104, .24), transparent 50%),
    var(--grad-night);
  box-shadow: var(--shadow-1);
}

.page-about .about-visit-copy .about-p {
  max-width: 58ch;
}

.page-about .about-inline {
  font-family: var(--font-mono);
  font-size: 13.5px;
  color: var(--gold);
  word-break: break-all;
}

.page-about .about-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(20px, 3vw, 30px);
}

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

@media (min-width: 640px) {
  .page-about .about-hero-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 12px 16px;
  }

  .page-about .about-season-card {
    flex-basis: 300px;
  }

  .page-about .about-team-list li {
    grid-template-columns: 118px minmax(0, 1fr);
    gap: 14px;
    align-items: baseline;
  }

  .page-about .about-legend {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px 18px;
  }
}

@media (min-width: 960px) {
  .page-about .about-hero-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    align-items: end;
    gap: 48px;
  }

  .page-about .about-chronicle-grid {
    grid-template-columns: 158px minmax(0, 1fr);
    gap: 56px;
    align-items: start;
  }

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

  .page-about .about-rail-list {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    padding-bottom: 0;
    border-left: 1px solid var(--hairline);
  }

  .page-about .about-rail-list a {
    position: relative;
    padding: 10px 0 10px 16px;
    border-radius: 0;
    white-space: normal;
  }

  .page-about .about-rail-list a::before {
    content: "";
    position: absolute;
    left: -1px;
    top: 50%;
    width: 1px;
    height: 0;
    background: var(--gold);
    transition: height var(--dur) var(--ease);
    transform: translateY(-50%);
  }

  .page-about .about-rail-list a:hover::before,
  .page-about .about-rail-list a:focus-visible::before {
    height: 100%;
  }

  .page-about .about-scope-grid {
    grid-template-columns: minmax(0, 1.18fr) minmax(0, .82fr);
    gap: 56px;
    align-items: start;
  }

  .page-about .about-scope-aside {
    position: sticky;
    top: calc(var(--header-h) + 28px);
  }

  .page-about .about-season-track {
    gap: 18px;
  }

  .page-about .about-season-card {
    flex-basis: 288px;
  }

  .page-about .about-team-grid {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, .8fr);
    gap: 56px;
    align-items: start;
  }

  .page-about .about-figure--tall img {
    height: 420px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-jump-inner a,
  .page-about .about-rail-list a,
  .page-about .about-layer summary::after,
  .page-about .about-rail-list a::before {
    transition: none;
  }

  .page-about .about-season-track {
    scroll-behavior: auto;
  }
}
<<<END>>>