.page-about {
  --about-idx: 236px;
  --about-soft: rgba(244, 238, 223, 0.62);
  background: var(--hh-paper-white);
  color: var(--hh-ink);
}

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

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(32px, 6vw, 76px) 0 clamp(40px, 7vw, 92px);
  background: var(--hh-deep-green);
  color: var(--hh-paper-white);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: -24%;
  right: -18%;
  width: 78%;
  height: 158%;
  border-radius: var(--hh-radius-lg);
  background: linear-gradient(158deg, rgba(201, 151, 47, 0.3), rgba(201, 151, 47, 0) 62%);
  transform: rotate(9deg);
  pointer-events: none;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(244, 238, 223, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(244, 238, 223, 0.055) 1px, transparent 1px);
  background-size: 68px 68px;
  pointer-events: none;
}

.page-about .about-hero__in {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(24px, 4vw, 48px);
}

.page-about .about-hero__edition {
  margin: 0 0 16px;
  font-family: var(--hh-mono);
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--hh-gold-soft);
}

.page-about .about-hero__title {
  margin: 0;
  font-family: var(--hh-serif);
  font-weight: 300;
  font-size: clamp(2.2rem, 8vw, 4.4rem);
  line-height: 1.08;
  letter-spacing: 0.01em;
}

.page-about .about-hero__title em {
  font-style: normal;
  color: var(--hh-gold-soft);
}

.page-about .about-hero__intro {
  margin: 20px 0 0;
  max-width: 46ch;
  font-size: clamp(1rem, 1.4vw, 1.0625rem);
  line-height: 1.85;
  color: rgba(251, 250, 246, 0.84);
}

.page-about .about-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 28px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-hero__facts li {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding-left: 14px;
  border-left: 2px solid var(--hh-gold);
}

.page-about .about-hero__facts strong {
  font-family: var(--hh-mono);
  font-size: 1.375rem;
  font-weight: 500;
  color: var(--hh-paper-white);
}

.page-about .about-hero__facts span {
  font-size: 0.8125rem;
  color: rgba(251, 250, 246, 0.7);
}

.page-about .about-hero__media {
  margin: 0;
  border-radius: var(--hh-radius-lg);
  overflow: hidden;
  border: 1px solid var(--hh-line-invert);
}

.page-about .about-hero__media img {
  display: block;
  width: 100%;
  height: clamp(220px, 42vw, 420px);
  object-fit: cover;
}

/* ---------- 面包屑 ---------- */
.page-about .about-crumbs {
  padding-top: 18px;
  padding-bottom: 4px;
}

.page-about .about-crumbs .hh-crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--hh-mono);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  color: rgba(30, 36, 32, 0.58);
}

.page-about .about-crumbs a {
  color: var(--hh-deep-green);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.page-about .about-crumbs a:hover,
.page-about .about-crumbs a:focus-visible {
  border-bottom-color: var(--hh-gold);
}

.page-about .about-crumbs .hh-crumbs__sep {
  color: var(--hh-gold);
}

/* ---------- 主体骨架 ---------- */
.page-about .about-body {
  padding: clamp(24px, 4vw, 48px) 0 clamp(48px, 7vw, 96px);
}

.page-about .about-layout {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
}

.page-about .about-index__title {
  margin: 0 0 10px;
  font-family: var(--hh-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(30, 36, 32, 0.5);
}

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

.page-about .about-index__link {
  display: block;
  padding: 9px 16px;
  border: 1px solid var(--hh-line);
  border-radius: 999px;
  background: var(--hh-paper-white);
  color: var(--hh-deep-green);
  font-size: 0.8125rem;
  line-height: 1.4;
  white-space: nowrap;
  text-decoration: none;
  transition: background 0.2s var(--hh-ease), border-color 0.2s var(--hh-ease), transform 0.2s var(--hh-ease);
}

.page-about .about-index__link:hover {
  border-color: var(--hh-gold);
  transform: translateY(-2px);
}

.page-about .about-index__link[aria-current="true"] {
  background: var(--hh-archive-cream);
  border-color: var(--hh-gold);
  color: var(--hh-gold-deep);
  font-weight: 600;
}

.page-about .about-index__link:focus-visible {
  outline: 3px solid var(--hh-gold);
  outline-offset: 2px;
  border-color: var(--hh-deep-green);
}

/* ---------- 章节 ---------- */
.page-about .about-section {
  scroll-margin-top: calc(var(--hh-head-h) + 20px);
  padding-top: clamp(28px, 4vw, 44px);
}

.page-about .about-section + .about-section {
  margin-top: clamp(28px, 5vw, 56px);
  border-top: 1px solid var(--hh-line);
}

.page-about .about-section__no {
  margin: 0 0 12px;
  font-family: var(--hh-mono);
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  color: var(--hh-gold-deep);
}

.page-about .about-section h2 {
  margin: 0 0 18px;
  font-family: var(--hh-serif);
  font-weight: 400;
  font-size: clamp(1.5rem, 4.2vw, 2.4rem);
  line-height: 1.28;
  color: var(--hh-deep-green);
}

.page-about .about-section h3 {
  margin: 0 0 6px;
  font-size: 1rem;
  font-weight: 600;
  color: var(--hh-deep-green);
}

.page-about .about-section p {
  margin: 0 0 16px;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--hh-ink);
}

.page-about .about-section p a,
.page-about .about-note a {
  color: var(--hh-deep-green);
  font-weight: 600;
  text-decoration: none;
  border-bottom: 2px solid var(--hh-gold);
}

.page-about .about-section p a:hover,
.page-about .about-note a:hover,
.page-about .about-section p a:focus-visible,
.page-about .about-note a:focus-visible {
  border-bottom-color: var(--hh-deep-green);
}

.page-about .about-note {
  margin: 18px 0 0;
  padding: 14px 18px;
  border-left: 3px solid var(--hh-mist-blue);
  background: var(--about-soft);
  border-radius: 0 var(--hh-radius) var(--hh-radius) 0;
  font-size: 0.9375rem !important;
  line-height: 1.75 !important;
  color: var(--hh-deep-green) !important;
}

/* ---------- 数字摘要带 ---------- */
.page-about .about-band {
  display: grid;
  gap: 18px;
  margin: clamp(24px, 4vw, 40px) 0;
  padding: clamp(20px, 3.5vw, 32px) clamp(18px, 3vw, 30px);
  background: var(--hh-archive-cream);
  border-radius: var(--hh-radius-lg);
}

.page-about .about-band__item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding-left: 14px;
  border-left: 2px solid var(--hh-gold);
}

.page-about .about-band__num {
  font-family: var(--hh-mono);
  font-size: 1.5rem;
  font-weight: 500;
  color: var(--hh-deep-green);
}

.page-about .about-band__label {
  font-size: 0.8125rem;
  line-height: 1.5;
  color: rgba(30, 36, 32, 0.72);
}

/* ---------- 关系图 ---------- */
.page-about .about-map__wrap {
  margin: 8px 0 20px;
  padding: clamp(10px, 2vw, 20px);
  background: var(--hh-archive-cream);
  border-radius: var(--hh-radius-lg);
}

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

.page-about .about-map__links line {
  stroke: rgba(18, 59, 50, 0.3);
  stroke-width: 1.5;
  stroke-dasharray: 4 5;
}

.page-about .about-map__node {
  transform-box: fill-box;
  transform-origin: center;
  transition: transform 0.2s var(--hh-ease);
}

.page-about .about-map__node circle {
  fill: var(--hh-paper-white);
  stroke-width: 2.5;
}

.page-about .about-map__node text {
  font-family: var(--hh-sans);
  font-size: 15px;
  text-anchor: middle;
  fill: var(--hh-ink);
}

.page-about .about-map__node .about-map__code {
  font-family: var(--hh-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
}

.page-about .about-map__node:hover,
.page-about .about-map__node:focus {
  transform: scale(1.06);
  outline: none;
}

.page-about .about-map__node:focus-visible circle {
  stroke-width: 4;
}

.page-about .about-map__node--gold circle { stroke: var(--hh-gold); }
.page-about .about-map__node--gold .about-map__code { fill: var(--hh-gold-deep); }
.page-about .about-map__node--terracotta circle { stroke: var(--hh-terracotta); }
.page-about .about-map__node--terracotta .about-map__code { fill: var(--hh-terracotta); }
.page-about .about-map__node--moss circle { stroke: var(--hh-moss); }
.page-about .about-map__node--moss .about-map__code { fill: var(--hh-moss); }
.page-about .about-map__node--mist circle { stroke: var(--hh-mist-blue); }
.page-about .about-map__node--mist .about-map__code { fill: #4B6470; }
.page-about .about-map__node--wine circle { stroke: var(--hh-wine); }
.page-about .about-map__node--wine .about-map__code { fill: var(--hh-wine); }
.page-about .about-map__node--indigo circle { stroke: var(--hh-indigo); }
.page-about .about-map__node--indigo .about-map__code { fill: var(--hh-indigo); }

.page-about .about-map__core circle {
  fill: var(--hh-deep-green);
}

.page-about .about-map__core text {
  text-anchor: middle;
  fill: var(--hh-paper-white);
}

.page-about .about-map__core .about-map__core-main {
  font-family: var(--hh-serif);
  font-size: 20px;
}

.page-about .about-map__core .about-map__core-sub {
  font-family: var(--hh-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  fill: var(--hh-gold-soft);
}

/* ---------- 图例 ---------- */
.page-about .about-legend {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-legend__item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 2px 12px;
  padding: 12px 14px;
  border-radius: var(--hh-radius);
  border-left: 3px solid var(--hh-gold);
  background: var(--hh-paper-white);
  transition: transform 0.2s var(--hh-ease), background 0.2s var(--hh-ease);
}

.page-about .about-legend__item:hover {
  transform: translateY(-2px);
  background: var(--hh-archive-cream);
}

.page-about .about-legend__no {
  grid-row: span 2;
  font-family: var(--hh-mono);
  font-size: 0.8125rem;
  color: var(--hh-gold-deep);
}

.page-about .about-legend__name {
  font-weight: 600;
  font-size: 0.9375rem;
  color: var(--hh-deep-green);
}

.page-about .about-legend__scene {
  font-size: 0.8125rem;
  line-height: 1.6;
  color: rgba(30, 36, 32, 0.72);
}

.page-about .about-legend__item--terracotta { border-left-color: var(--hh-terracotta); }
.page-about .about-legend__item--moss { border-left-color: var(--hh-moss); }
.page-about .about-legend__item--mist { border-left-color: var(--hh-mist-blue); }
.page-about .about-legend__item--wine { border-left-color: var(--hh-wine); }
.page-about .about-legend__item--indigo { border-left-color: var(--hh-indigo); }

/* ---------- 版本时间线 ---------- */
.page-about .about-tl {
  display: grid;
  gap: 20px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-tl__item {
  position: relative;
  padding-top: 14px;
  border-top: 2px solid var(--hh-line);
}

.page-about .about-tl__item::before {
  content: "";
  position: absolute;
  top: -7px;
  left: 0;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--hh-gold);
  box-shadow: 0 0 0 4px var(--hh-paper-white);
}

.page-about .about-tl__item--current {
  border-top-color: var(--hh-deep-green);
}

.page-about .about-tl__item--current::before {
  background: var(--hh-deep-green);
}

.page-about .about-tl__item summary {
  display: flex;
  flex-direction: column;
  gap: 3px;
  cursor: pointer;
  list-style: none;
}

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

.page-about .about-tl__item summary:focus-visible {
  outline: 3px solid var(--hh-gold);
  outline-offset: 3px;
  border-radius: 6px;
}

.page-about .about-tl__ver {
  font-family: var(--hh-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.06em;
  color: var(--hh-gold-deep);
}

.page-about .about-tl__name {
  font-family: var(--hh-serif);
  font-size: 1.0625rem;
  color: var(--hh-deep-green);
}

.page-about .about-tl__desc {
  margin: 10px 0 0;
  font-size: 0.8125rem !important;
  line-height: 1.7 !important;
  color: rgba(30, 36, 32, 0.74) !important;
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  display: grid;
  gap: 10px;
  margin: 20px 0 24px;
  padding: 0;
  list-style: none;
}

.page-about .about-team li {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 2px 14px;
  align-items: baseline;
  padding: 12px 16px;
  border-radius: var(--hh-radius);
  background: var(--hh-archive-cream);
}

.page-about .about-team__num {
  grid-row: span 2;
  font-family: var(--hh-mono);
  font-size: 1.375rem;
  color: var(--hh-deep-green);
}

.page-about .about-team__role {
  font-weight: 600;
  font-size: 0.9375rem;
  color: var(--hh-deep-green);
}

.page-about .about-team__desc {
  font-size: 0.8125rem;
  color: rgba(30, 36, 32, 0.7);
}

.page-about .about-team__media {
  margin: 0 0 22px;
  border-radius: var(--hh-radius-lg);
  overflow: hidden;
}

.page-about .about-team__media img {
  display: block;
  width: 100%;
  height: clamp(190px, 34vw, 340px);
  object-fit: cover;
}

/* ---------- 处理流程 ---------- */
.page-about .about-flow {
  display: grid;
  gap: 14px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-flow__step {
  padding: 16px 18px;
  border-radius: var(--hh-radius);
  border: 1px solid var(--hh-line);
}

.page-about .about-flow__no {
  display: inline-block;
  margin-bottom: 8px;
  padding: 2px 9px;
  border-radius: 999px;
  background: var(--hh-deep-green);
  color: var(--hh-gold-soft);
  font-family: var(--hh-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.08em;
}

.page-about .about-flow__step p {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.72;
  color: rgba(30, 36, 32, 0.78);
}

/* ---------- 合作生态 ---------- */
.page-about .about-ecosystem {
  display: grid;
  gap: 18px;
  margin: 22px 0 0;
}

.page-about .about-ecosystem__figure {
  border-radius: var(--hh-radius-lg);
  overflow: hidden;
  background: var(--hh-deep-green);
}

.page-about .about-ecosystem__figure img {
  display: block;
  width: 100%;
  height: clamp(160px, 30vw, 260px);
  object-fit: cover;
  opacity: 0.92;
}

.page-about .about-ecosystem__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 2px;
}

.page-about .about-ecosystem__list li {
  display: grid;
  gap: 2px;
  padding: 12px 4px;
  border-bottom: 1px solid var(--hh-line);
}

.page-about .about-ecosystem__k {
  font-family: var(--hh-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  color: var(--hh-gold-deep);
}

.page-about .about-ecosystem__v {
  font-size: 0.9375rem;
  line-height: 1.6;
  color: var(--hh-deep-green);
}

/* ---------- 结尾行动 ---------- */
.page-about .about-cta {
  background: var(--hh-deep-green);
  color: var(--hh-paper-white);
  padding: clamp(36px, 6vw, 72px) 0;
}

.page-about .about-cta__in h2 {
  margin: 0 0 12px;
  font-family: var(--hh-serif);
  font-weight: 300;
  font-size: clamp(1.5rem, 4vw, 2.25rem);
  line-height: 1.3;
  color: var(--hh-paper-white);
}

.page-about .about-cta__in p {
  margin: 0 0 24px;
  max-width: 54ch;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: rgba(251, 250, 246, 0.8);
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-about .about-cta .hh-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 22px;
  border-radius: 999px;
  font-size: 0.9375rem;
  text-decoration: none;
  transition: transform 0.2s var(--hh-ease), background 0.2s var(--hh-ease), color 0.2s var(--hh-ease);
}

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

.page-about .about-cta .hh-btn:focus-visible {
  outline: 3px solid var(--hh-gold);
  outline-offset: 3px;
}

.page-about .about-cta .hh-btn--gold {
  background: var(--hh-gold);
  color: var(--hh-deep-green-2);
  font-weight: 600;
}

.page-about .about-cta .hh-btn--gold:hover {
  background: var(--hh-gold-soft);
}

.page-about .about-cta .hh-btn--ghost {
  border: 1px solid var(--hh-line-invert);
  color: var(--hh-paper-white);
}

.page-about .about-cta .hh-btn--ghost:hover {
  border-color: var(--hh-gold);
  color: var(--hh-gold-soft);
}

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

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

  .page-about .about-flow {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .about-team {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .about-tl {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px 20px;
  }

  .page-about .about-ecosystem__list li {
    grid-template-columns: 116px 1fr;
    align-items: baseline;
    gap: 12px;
  }
}

@media (min-width: 960px) {
  .page-about .about-hero__in {
    grid-template-columns: minmax(0, 1.04fr) minmax(0, 0.96fr);
    align-items: center;
  }

  .page-about .about-hero__media img {
    height: clamp(300px, 34vw, 440px);
  }

  .page-about .about-layout {
    grid-template-columns: var(--about-idx) minmax(0, 1fr);
    gap: clamp(36px, 5vw, 72px);
    align-items: start;
  }

  .page-about .about-index {
    position: sticky;
    top: calc(var(--hh-head-h) + 20px);
    align-self: start;
  }

  .page-about .about-index__list {
    flex-direction: column;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-about .about-index__link {
    border-radius: 0 var(--hh-radius) var(--hh-radius) 0;
    border-left: 3px solid transparent;
    white-space: normal;
  }

  .page-about .about-index__link[aria-current="true"] {
    border-left-color: var(--hh-gold);
  }

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

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

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

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

  .page-about .about-tl {
    grid-template-columns: repeat(6, minmax(0, 1fr));
    gap: 18px;
  }

  .page-about .about-ecosystem {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    gap: 28px;
    align-items: start;
  }

  .page-about .about-ecosystem__figure img {
    height: 100%;
    min-height: 260px;
  }

  .page-about .about-section h2 {
    max-width: 22ch;
  }
}

@media (min-width: 1200px) {
  .page-about {
    --about-idx: 260px;
  }

  .page-about .about-team li {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .page-about .about-team__num {
    grid-row: auto;
    font-size: 1.75rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about *,
  .page-about *::before,
  .page-about *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }

  .page-about .about-map__node:hover,
  .page-about .about-map__node:focus,
  .page-about .about-legend__item:hover,
  .page-about .about-index__link:hover,
  .page-about .about-cta .hh-btn:hover {
    transform: none;
  }
}
<<<END>>>