.page-about{
  --ab-shadow: 0 20px 48px -30px rgba(43,33,24,.5);
  background: var(--xy-cream);
  color: var(--xy-ink);
  overflow-x: clip;
}

.page-about .ab-br{ display: none; }
@media (min-width: 720px){
  .page-about .ab-br{ display: inline; }
}

/* ---------- Hero ---------- */
.page-about .ab-hero{
  position: relative;
  overflow: hidden;
  padding: calc(var(--xy-header-h) + clamp(24px, 4vw, 44px)) 0 clamp(48px, 7vw, 84px);
  background:
    radial-gradient(120% 92% at 90% 0%, rgba(242,140,40,.22), rgba(242,140,40,0) 58%),
    radial-gradient(90% 70% at 0% 100%, rgba(127,179,213,.24), rgba(127,179,213,0) 62%),
    var(--xy-cream);
}
.page-about .ab-hero::before{
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(232,213,191,.6) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(232,213,191,.5) 1px, transparent 1px);
  background-size: 84px 84px;
  -webkit-mask-image: radial-gradient(78% 62% at 72% 16%, #000, transparent 76%);
  mask-image: radial-gradient(78% 62% at 72% 16%, #000, transparent 76%);
  pointer-events: none;
}
.page-about .ab-hero__inner{
  position: relative;
  z-index: 1;
}
.page-about .ab-breadcrumb-current{
  font-family: var(--xy-font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--xy-ink-mute);
}
.page-about .ab-hero__grid{
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 48px);
  margin-top: clamp(20px, 3vw, 36px);
  align-items: start;
}
.page-about .ab-hero__title{
  margin: 14px 0 0;
  font-family: var(--xy-font-display);
  font-weight: 900;
  font-size: clamp(32px, 6vw, 66px);
  line-height: 1.14;
  letter-spacing: -0.012em;
  color: var(--xy-ink);
}
.page-about .ab-hero__lead{
  margin: clamp(16px, 2.4vw, 24px) 0 0;
  max-width: 46em;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.85;
  color: var(--xy-ink-soft);
}
.page-about .ab-hero__actions{
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 3vw, 32px);
}
.page-about .ab-hero__visual{
  margin: 0;
  border: 1px solid var(--xy-line);
  background: var(--xy-apricot);
  box-shadow: var(--ab-shadow);
  min-width: 0;
}
.page-about .ab-hero__visual img{
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}
.page-about .ab-hero__caption{
  padding: 12px 16px;
  border-top: 1px solid var(--xy-line);
  background: var(--xy-cream);
  font-size: 13px;
  line-height: 1.7;
  color: var(--xy-ink-mute);
}
.page-about .ab-hero__stats{
  list-style: none;
  margin: clamp(34px, 5vw, 60px) 0 0;
  padding: clamp(20px, 3vw, 28px) 0 0;
  border-top: 1px solid var(--xy-line);
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}
.page-about .ab-hero__stat{
  border-left: 4px solid var(--xy-orange);
  padding-left: 14px;
}
.page-about .ab-hero__num{
  display: inline-block;
  font-family: var(--xy-font-display);
  font-weight: 900;
  font-size: clamp(30px, 4.2vw, 44px);
  line-height: 1.1;
  color: var(--xy-ink);
}
.page-about .ab-hero__unit{
  font-family: var(--xy-font-body);
  font-weight: 700;
  font-size: 14px;
  margin-left: 4px;
  color: var(--xy-orange);
}
.page-about .ab-hero__stat-note{
  margin: 6px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--xy-ink-mute);
}
@media (min-width: 720px){
  .page-about .ab-hero__stats{ grid-template-columns: repeat(3, 1fr); gap: 24px; }
}
@media (min-width: 960px){
  .page-about .ab-hero__grid{ grid-template-columns: 7fr 5fr; }
}

/* ---------- 章节目录 ---------- */
.page-about .ab-toc{
  display: none;
  position: sticky;
  top: var(--xy-header-h);
  z-index: 18;
  background: rgba(255,247,238,.95);
  border-top: 1px solid var(--xy-line);
  border-bottom: 1px solid var(--xy-line);
  backdrop-filter: blur(8px);
}
.page-about .ab-toc__inner{
  display: flex;
  gap: 6px;
  overflow-x: auto;
  padding-top: 10px;
  padding-bottom: 10px;
  scrollbar-width: none;
}
.page-about .ab-toc__inner::-webkit-scrollbar{ display: none; }
.page-about .ab-toc__link{
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 34px;
  padding: 6px 12px;
  font-size: 14px;
  font-weight: 700;
  color: var(--xy-ink-soft);
  text-decoration: none;
  border: 1px solid transparent;
  transition: background .18s var(--xy-ease), color .18s var(--xy-ease), border-color .18s var(--xy-ease);
}
.page-about .ab-toc__idx{
  font-family: var(--xy-font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--xy-orange);
}
.page-about .ab-toc__link:hover,
.page-about .ab-toc__link:focus-visible{
  background: var(--xy-apricot);
  border-color: var(--xy-line);
  color: var(--xy-ink);
  outline: none;
}
.page-about .ab-toc__link[aria-current="true"]{
  background: var(--xy-highlight);
  border-color: var(--xy-sky);
  color: var(--xy-ink);
}
@media (min-width: 900px){
  .page-about .ab-toc{ display: block; }
}

/* ---------- 章节通用 ---------- */
.page-about .ab-section{
  position: relative;
  padding: var(--xy-section-space) 0;
}
.page-about .ab-section--sand{
  background: var(--xy-sand);
  border-top: 1px solid var(--xy-line);
  border-bottom: 1px solid var(--xy-line);
}
.page-about .xy-h2{ margin: 12px 0 0; }

/* ---------- 起点 ---------- */
.page-about .ab-origin__grid{
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 56px);
}
.page-about .ab-origin__quote{
  margin: 14px 0 0;
  padding-left: 18px;
  border-left: 4px solid var(--xy-orange);
  font-family: var(--xy-font-display);
  font-weight: 900;
  font-size: clamp(21px, 2.6vw, 30px);
  line-height: 1.55;
  letter-spacing: -0.008em;
  color: var(--xy-ink);
}
.page-about .ab-origin__body > .xy-lead{ margin-top: 16px; }
.page-about .ab-origin__body > .xy-prose{ margin-top: 14px; }
.page-about .ab-origin__list{
  list-style: none;
  margin: clamp(24px, 3.4vw, 36px) 0 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--xy-line);
}
.page-about .ab-origin__item{
  display: grid;
  grid-template-columns: 40px 1fr;
  gap: 12px;
  padding: 18px 0;
  border-bottom: 1px solid var(--xy-line);
}
.page-about .ab-origin__item-idx{
  font-family: var(--xy-font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--xy-white);
  background: var(--xy-gold);
  height: 24px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--xy-ink);
}
.page-about .ab-origin__item-title{
  margin: 0 0 4px;
  font-size: 17px;
  font-weight: 800;
  color: var(--xy-ink);
}
.page-about .ab-origin__item p{
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--xy-ink-soft);
}
@media (min-width: 900px){
  .page-about .ab-origin__grid{ grid-template-columns: 5fr 7fr; align-items: start; }
}

/* ---------- 使命与愿景 ---------- */
.page-about .ab-mission{
  background:
    radial-gradient(90% 70% at 88% 8%, rgba(242,140,40,.24), rgba(242,140,40,0) 60%),
    linear-gradient(160deg, var(--xy-night) 0%, var(--xy-night-deep) 64%, #0c1e2e 100%);
  color: var(--xy-cream);
  overflow: hidden;
}
.page-about .ab-mission__eyebrow{ color: var(--xy-gold); }
.page-about .ab-mission__stack{ margin-top: clamp(20px, 3vw, 32px); }
.page-about .ab-mission__big{
  margin: 0 0 clamp(14px, 2vw, 22px);
  font-family: var(--xy-font-display);
  font-weight: 900;
  font-size: clamp(25px, 4.4vw, 52px);
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--xy-cream);
  max-width: 20em;
}
.page-about .ab-mission__big--shift{
  margin-left: clamp(0px, 9vw, 150px);
  color: var(--xy-apricot);
}
.page-about .ab-mission__cols{
  list-style: none;
  margin: clamp(32px, 5vw, 56px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
}
.page-about .ab-mission__col{
  border-top: 2px solid var(--xy-orange);
  padding-top: 16px;
}
.page-about .ab-mission__col-title{
  margin: 0 0 8px;
  font-size: 18px;
  font-weight: 800;
  color: var(--xy-cream);
}
.page-about .ab-mission__col p{
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--xy-cream-soft);
}
@media (min-width: 780px){
  .page-about .ab-mission__cols{ grid-template-columns: repeat(3, 1fr); gap: 30px; }
}

/* ---------- 发展历程 ---------- */
.page-about .ab-timeline__head{
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 3.4vw, 44px);
  align-items: end;
}
.page-about .ab-timeline__head .xy-lead{ margin-top: 14px; }
.page-about .ab-timeline__figure{
  margin: 0;
  border: 1px solid var(--xy-line);
  background: var(--xy-cream);
  min-width: 0;
}
.page-about .ab-timeline__figure img{
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}
.page-about .ab-timeline__list{
  list-style: none;
  margin: clamp(34px, 5vw, 60px) 0 0;
  padding: 0;
}
.page-about .ab-timeline__item{
  display: grid;
  grid-template-columns: 62px 1fr;
  gap: 14px;
}
.page-about .ab-timeline__year{
  font-family: var(--xy-font-mono);
  font-weight: 700;
  font-size: clamp(18px, 2.2vw, 26px);
  letter-spacing: .02em;
  color: var(--xy-orange);
  line-height: 1.4;
  padding-top: 2px;
}
.page-about .ab-timeline__content{
  position: relative;
  border-left: 1px solid var(--xy-line);
  padding: 0 0 clamp(26px, 3.2vw, 40px) clamp(16px, 2.2vw, 26px);
}
.page-about .ab-timeline__content::before{
  content: "";
  position: absolute;
  left: -5px;
  top: 8px;
  width: 9px;
  height: 9px;
  background: var(--xy-orange);
  border: 2px solid var(--xy-sand);
  box-sizing: content-box;
}
.page-about .ab-timeline__item:last-child .ab-timeline__content{ padding-bottom: 0; }
.page-about .ab-timeline__title{
  margin: 0 0 6px;
  font-size: 18px;
  font-weight: 800;
  color: var(--xy-ink);
}
.page-about .ab-timeline__content p{
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--xy-ink-soft);
}
@media (min-width: 720px){
  .page-about .ab-timeline__item{ grid-template-columns: 128px 1fr; gap: clamp(20px, 3vw, 44px); }
}
@media (min-width: 900px){
  .page-about .ab-timeline__head{ grid-template-columns: 7fr 5fr; }
}

/* ---------- 服务覆盖 ---------- */
.page-about .ab-reach__grid{
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 52px);
  align-items: start;
}
.page-about .ab-reach__copy .xy-lead{ margin-top: 14px; }
.page-about .ab-reach__copy .xy-prose{ margin-top: 14px; }
.page-about .ab-reach__facts{
  margin: clamp(22px, 3vw, 32px) 0 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--xy-line);
  border: 1px solid var(--xy-line);
}
.page-about .ab-reach__fact{
  background: var(--xy-cream);
  padding: 14px 16px;
}
.page-about .ab-reach__fact dt{
  font-size: 12px;
  line-height: 1.6;
  letter-spacing: .04em;
  color: var(--xy-ink-mute);
}
.page-about .ab-reach__fact dd{
  margin: 6px 0 0;
  font-family: var(--xy-font-display);
  font-weight: 900;
  font-size: clamp(20px, 2.6vw, 28px);
  line-height: 1.2;
  color: var(--xy-ink);
}
.page-about .ab-reach__figure{
  margin: 0;
  border: 1px solid var(--xy-line);
  background: var(--xy-highlight);
  min-width: 0;
}
.page-about .ab-reach__figure img{
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}
.page-about .ab-reach__nodes{
  margin-top: clamp(36px, 5vw, 60px);
  padding-top: clamp(22px, 3vw, 32px);
  border-top: 1px solid var(--xy-line);
}
.page-about .ab-reach__nodes-title{
  margin: 0 0 16px;
  font-size: 17px;
  font-weight: 800;
  color: var(--xy-ink);
}
.page-about .ab-reach__node-list{
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 10px;
}
.page-about .ab-reach__node{
  display: flex;
  align-items: center;
  gap: 8px;
  min-height: 46px;
  padding: 8px 12px;
  font-size: 13.5px;
  line-height: 1.5;
  color: var(--xy-ink);
  background: var(--xy-cream);
  border: 1px solid var(--xy-line);
  border-left: 4px solid var(--xy-sky);
  transition: background .18s var(--xy-ease), border-left-color .18s var(--xy-ease), transform .18s var(--xy-ease);
}
.page-about .ab-reach__node:hover,
.page-about .ab-reach__node:focus-within{
  background: var(--xy-apricot);
  border-left-color: var(--xy-orange);
  transform: translateY(-2px);
}
.page-about .ab-reach__node-idx{
  font-family: var(--xy-font-mono);
  font-size: 11px;
  letter-spacing: .06em;
  color: var(--xy-ink-mute);
  flex: 0 0 auto;
}
@media (min-width: 780px){
  .page-about .ab-reach__facts{ grid-template-columns: repeat(4, 1fr); }
}
@media (min-width: 960px){
  .page-about .ab-reach__grid{ grid-template-columns: 7fr 5fr; }
}

/* ---------- 团队与协作 ---------- */
.page-about .ab-team__head{ max-width: 62em; }
.page-about .ab-team__head .xy-lead{ margin-top: 14px; }
.page-about .ab-team__grid{
  margin-top: clamp(28px, 4vw, 48px);
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}
.page-about .ab-team__card{
  background: var(--xy-cream);
  border: 1px solid var(--xy-line);
  border-top: 4px solid var(--xy-orange);
  padding: clamp(20px, 2.6vw, 28px);
}
.page-about .ab-team__card--sky{ border-top-color: var(--xy-sky); }
.page-about .ab-team__card--gold{ border-top-color: var(--xy-gold); }
.page-about .ab-team__card-title{
  margin: 0 0 10px;
  font-size: 19px;
  font-weight: 800;
  color: var(--xy-ink);
}
.page-about .ab-team__card p{
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--xy-ink-soft);
}
@media (min-width: 860px){
  .page-about .ab-team__grid{ grid-template-columns: repeat(3, 1fr); }
}

/* ---------- 品质与责任 ---------- */
.page-about .ab-care__head{ max-width: 60em; }
.page-about .ab-care__grid{
  margin-top: clamp(28px, 4vw, 48px);
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--xy-line);
  border: 1px solid var(--xy-line);
}
.page-about .ab-care__item{
  background: var(--xy-cream);
  padding: clamp(20px, 2.6vw, 28px);
}
.page-about .ab-care__idx{
  display: inline-block;
  font-family: var(--xy-font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--xy-ink);
  background: var(--xy-gold);
  padding: 2px 8px;
  margin-bottom: 12px;
}
.page-about .ab-care__title{
  margin: 0 0 8px;
  font-size: 18px;
  font-weight: 800;
  color: var(--xy-ink);
}
.page-about .ab-care__item p{
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--xy-ink-soft);
}
@media (min-width: 800px){
  .page-about .ab-care__grid{ grid-template-columns: repeat(2, 1fr); }
}

/* ---------- 结尾行动区 ---------- */
.page-about .ab-cta{
  padding: clamp(52px, 7vw, 96px) 0;
  background:
    radial-gradient(80% 120% at 100% 0%, rgba(242,140,40,.35), rgba(242,140,40,0) 58%),
    linear-gradient(118deg, var(--xy-night) 0%, #26283c 44%, var(--xy-red-deep) 100%);
  color: var(--xy-cream);
}
.page-about .ab-cta__title{
  margin: 0;
  font-family: var(--xy-font-display);
  font-weight: 900;
  font-size: clamp(26px, 4.2vw, 46px);
  line-height: 1.24;
  letter-spacing: -0.01em;
  color: var(--xy-cream);
  max-width: 18em;
}
.page-about .ab-cta__text{
  margin: 14px 0 0;
  max-width: 44em;
  font-size: 15px;
  line-height: 1.85;
  color: var(--xy-cream-soft);
}
.page-about .ab-cta__actions{
  margin-top: clamp(22px, 3vw, 32px);
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.page-about .ab-cta__link{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 12px 22px;
  font-size: 15px;
  font-weight: 700;
  text-decoration: none;
  color: var(--xy-cream);
  background: rgba(255,247,238,.08);
  border: 1px solid rgba(255,247,238,.5);
  transition: background .18s var(--xy-ease), color .18s var(--xy-ease), border-color .18s var(--xy-ease);
}
.page-about .ab-cta__link:hover,
.page-about .ab-cta__link:focus-visible{
  background: rgba(255,247,238,.2);
  border-color: var(--xy-cream);
  outline: none;
}
.page-about .ab-cta__link--strong{
  background: var(--xy-cream);
  color: var(--xy-ink);
  border-color: var(--xy-cream);
}
.page-about .ab-cta__link--strong:hover,
.page-about .ab-cta__link--strong:focus-visible{
  background: var(--xy-apricot);
  color: var(--xy-ink);
  border-color: var(--xy-apricot);
}

@media (prefers-reduced-motion: reduce){
  .page-about .ab-toc__link,
  .page-about .ab-reach__node,
  .page-about .ab-cta__link{ transition: none; }
  .page-about .ab-reach__node:hover{ transform: none; }
}
<<<END>>>