.page-about{
  --about-figure-shadow: 9px 9px 0 rgba(14,42,34,.16);
  background: var(--paper);
  color: var(--ink);
  overflow-x: hidden;
}

.page-about h2{
  font-family: var(--font-display);
  font-size: clamp(24px, 3.4vw, 36px);
  line-height: 1.32;
  letter-spacing: -.01em;
  margin: 10px 0 0;
  color: var(--ink);
}

.page-about h3{
  font-family: var(--font-display);
  font-size: clamp(18px, 2.1vw, 23px);
  line-height: 1.4;
  margin: 0 0 8px;
  color: inherit;
}

.page-about p{
  line-height: 1.8;
  margin: 0 0 14px;
}

.page-about .ky-eyebrow{
  color: var(--brass);
  letter-spacing: .18em;
  font-size: 12px;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero{
  position: relative;
  margin-top: calc(var(--header-h) * -1);
  padding: calc(var(--header-h) + 36px) 0 48px;
  color: var(--on-dark);
  background:
    radial-gradient(110% 80% at 8% 0%, rgba(192,138,62,.22), transparent 58%),
    linear-gradient(168deg, var(--hall) 0%, var(--hall-2) 58%, var(--hall-3) 100%);
  overflow: hidden;
}

.page-about .about-hero::before{
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(216,208,192,.07) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(216,208,192,.07) 1px, transparent 1px);
  background-size: 68px 68px;
  pointer-events: none;
}

.page-about .about-hero__inner{
  position: relative;
  display: grid;
  grid-template-columns: minmax(0,1fr);
  gap: 34px;
  align-items: center;
}

.page-about .about-hero .ky-breadcrumb ol{
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  list-style: none;
  margin: 0 0 20px;
  padding: 0;
  font-family: var(--font-index);
  font-size: 12px;
  letter-spacing: .06em;
}

.page-about .about-hero .ky-breadcrumb a,
.page-about .about-hero .ky-breadcrumb li{
  color: var(--on-dark-muted);
  text-decoration: none;
}

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

.page-about .about-hero .ky-breadcrumb li + li::before{
  content: "/";
  margin-right: 6px;
  opacity: .55;
}

.page-about .about-hero__eyebrow{
  color: var(--lamp);
  margin: 0 0 12px;
}

.page-about .about-hero h1{
  font-family: var(--font-display);
  font-size: clamp(27px, 5vw, 50px);
  line-height: 1.24;
  letter-spacing: -.015em;
  font-weight: 700;
  margin: 0 0 18px;
  color: var(--on-dark);
  max-width: 18ch;
}

.page-about .about-hero__lead{
  font-size: clamp(15px, 1.6vw, 18px);
  line-height: 1.85;
  color: var(--on-dark);
  opacity: .86;
  max-width: 60ch;
  margin: 0 0 26px;
}

.page-about .about-hero__index{
  list-style: none;
  display: grid;
  grid-template-columns: repeat(3, minmax(0,1fr));
  gap: 14px;
  margin: 0 0 26px;
  padding: 18px 0 0;
  border-top: 1px solid var(--line-strong);
}

.page-about .about-hero__index strong{
  display: block;
  font-family: var(--font-index);
  font-size: clamp(20px, 3vw, 30px);
  line-height: 1.1;
  color: var(--lamp);
  letter-spacing: -.02em;
}

.page-about .about-hero__index span{
  display: block;
  margin-top: 6px;
  font-size: 12px;
  line-height: 1.6;
  color: var(--on-dark-muted);
}

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

.page-about .about-hero__visual{
  position: relative;
  margin: 0;
}

.page-about .about-hero__visual img{
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border: 2px solid var(--line-strong);
  box-shadow: 0 0 0 1px rgba(14,42,34,.5), 12px 12px 0 rgba(192,138,62,.22);
}

.page-about .about-hero__plate{
  position: absolute;
  left: 12px;
  bottom: -13px;
  background: var(--brass);
  color: var(--hall-3);
  font-family: var(--font-index);
  font-size: 11px;
  letter-spacing: .14em;
  padding: 7px 12px;
  border: 2px solid var(--hall-3);
}

/* ---------- 章节导览条 ---------- */
.page-about .about-anchor{
  background: var(--card);
  border-bottom: 1px solid var(--line-light);
  border-top: 2px solid var(--brass);
}

.page-about .about-anchor__inner{
  display: flex;
  gap: 22px;
  overflow-x: auto;
  padding-top: 14px;
  padding-bottom: 14px;
  scrollbar-width: thin;
}

.page-about .about-anchor a{
  flex: none;
  display: inline-flex;
  align-items: baseline;
  gap: 7px;
  font-family: var(--font-index);
  font-size: 12px;
  letter-spacing: .05em;
  color: var(--hall);
  text-decoration: none;
  padding-bottom: 3px;
  border-bottom: 2px solid transparent;
  white-space: nowrap;
}

.page-about .about-anchor a span{
  color: var(--brass);
  font-weight: 700;
}

.page-about .about-anchor a:hover,
.page-about .about-anchor a:focus-visible{
  border-bottom-color: var(--brass);
  color: var(--hall-3);
}

/* ---------- 通用章节 ---------- */
.page-about .about-section{
  padding: 52px 0;
  border-top: 1px solid var(--line-light);
}

.page-about .about-section--plain{
  background: var(--card);
}

.page-about .about-section--corridor{
  background:
    linear-gradient(180deg, rgba(216,208,192,.28), rgba(216,208,192,0) 240px),
    var(--paper);
}

.page-about .about-section--paper{
  background: var(--card);
}

.page-about .about-head{
  max-width: 720px;
  margin-bottom: 30px;
}

.page-about .about-head__lead{
  margin-top: 14px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--moss);
}

.page-about .about-prose p{
  max-width: 64ch;
}

.page-about .about-note{
  border-left: 3px solid var(--brass);
  padding: 4px 0 4px 16px;
  color: var(--moss);
  font-size: 14px;
  line-height: 1.85;
}

.page-about .about-note p{
  margin: 0;
}

.page-about .about-origin__grid{
  display: grid;
  grid-template-columns: minmax(0,1fr);
  gap: 26px;
}

/* ---------- 三条业务线 ---------- */
.page-about .about-lines{
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line-light);
}

.page-about .about-lines__item{
  display: grid;
  grid-template-columns: minmax(0,1fr);
  gap: 14px;
  padding: 26px 0;
  border-bottom: 1px solid var(--line-light);
}

.page-about .about-lines__num{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 26px;
  background: var(--brass);
  color: var(--hall-3);
  font-family: var(--font-index);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .1em;
}

.page-about .about-lines__body p{
  max-width: 62ch;
  font-size: 15px;
  color: var(--ink);
}

.page-about .about-tags{
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 14px 0 0;
  padding: 0;
}

.page-about .about-tags li{
  font-family: var(--font-index);
  font-size: 11px;
  letter-spacing: .04em;
  padding: 3px 9px;
  border: 1px solid currentColor;
  opacity: .7;
}

.page-about .about-lines__gain{
  margin: 0;
  font-size: 13px;
  line-height: 1.8;
  color: var(--moss);
  border-left: 2px solid var(--guide);
  padding-left: 12px;
}

.page-about .about-lines__item--focus{
  background:
    radial-gradient(120% 130% at 90% 0%, rgba(192,138,62,.2), transparent 60%),
    var(--hall);
  color: var(--on-dark);
  padding: 26px 20px;
  margin: 10px 0;
  border-bottom: 1px solid var(--line-strong);
  box-shadow: var(--about-figure-shadow);
}

.page-about .about-lines__item--focus .about-lines__body p{
  color: var(--on-dark);
  opacity: .9;
}

.page-about .about-lines__item--focus .about-lines__gain{
  color: var(--on-dark-muted);
  border-left-color: var(--line-strong);
}

/* ---------- 发展回廊 ---------- */
.page-about .about-corridor{
  display: grid;
  grid-template-columns: minmax(0,1fr);
  gap: 28px;
}

.page-about .about-corridor__figure{
  margin: 0;
}

.page-about .about-corridor__figure img{
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border: 2px solid var(--ink);
  box-shadow: var(--about-figure-shadow);
}

.page-about .about-corridor__figure figcaption{
  margin-top: 10px;
  font-family: var(--font-index);
  font-size: 11px;
  letter-spacing: .04em;
  color: var(--moss);
}

.page-about .about-timeline{
  border-top: 2px solid var(--ink);
}

.page-about .about-timeline__item{
  border-bottom: 1px solid var(--line-light);
}

.page-about .about-timeline__trigger{
  width: 100%;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 4px;
  background: transparent;
  border: 0;
  text-align: left;
  cursor: pointer;
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.5;
  color: var(--ink);
  transition: background-color .18s ease;
}

.page-about .about-timeline__trigger:hover{
  background: rgba(192,138,62,.1);
}

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

.page-about .about-timeline__year{
  flex: none;
  font-family: var(--font-index);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--hall);
  background: var(--guide);
  border-bottom: 2px solid var(--brass);
  padding: 3px 8px;
}

.page-about .about-timeline__label{
  flex: 1 1 auto;
  min-width: 0;
}

.page-about .about-timeline__mark{
  flex: none;
  font-family: var(--font-index);
  color: var(--brass);
  font-size: 14px;
}

.page-about .about-timeline__panel{
  border-left: 2px solid var(--line-light);
  margin-left: 6px;
  padding: 0 0 20px 16px;
}

.page-about .about-timeline__panel p{
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  max-width: 58ch;
  color: var(--ink);
}

/* ---------- 团队 ---------- */
.page-about .about-team{
  display: grid;
  grid-template-columns: minmax(0,1fr);
  gap: 28px;
}

.page-about .about-team__figure{
  margin: 0;
}

.page-about .about-team__figure img{
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border: 2px solid var(--ink);
  box-shadow: var(--about-figure-shadow);
}

.page-about .about-team__figure figcaption{
  margin-top: 10px;
  font-family: var(--font-index);
  font-size: 11px;
  letter-spacing: .04em;
  color: var(--moss);
}

.page-about .about-team__tabs .ky-tabs__list{
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 22px;
  padding: 0;
  border-bottom: 1px solid var(--line-light);
}

.page-about .about-team__tabs .ky-tabs__tab{
  appearance: none;
  border: 1px solid var(--line-light);
  border-bottom: 0;
  background: transparent;
  color: var(--hall);
  padding: 9px 12px;
  font-family: var(--font-index);
  font-size: 12px;
  letter-spacing: .03em;
  cursor: pointer;
  transition: background-color .18s ease, color .18s ease;
}

.page-about .about-team__tabs .ky-tabs__tab:hover{
  background: rgba(192,138,62,.14);
}

.page-about .about-team__tabs .ky-tabs__tab:focus-visible{
  outline: 3px solid var(--brass);
  outline-offset: 2px;
}

.page-about .about-team__tabs .ky-tabs__tab[aria-selected="true"]{
  background: var(--hall);
  border-color: var(--hall);
  color: var(--on-dark);
}

.page-about .about-team__tabs .ky-tabs__panel{
  padding: 0 0 6px;
}

.page-about .about-team__tabs .ky-tabs__panel[hidden]{
  display: none;
}

.page-about .about-team__tabs .ky-tabs__panel p{
  max-width: 62ch;
  font-size: 15px;
}

.page-about .about-factline{
  list-style: none;
  margin: 18px 0 0;
  padding: 16px 0 0;
  border-top: 1px dashed var(--line-light);
  display: grid;
  gap: 10px;
}

.page-about .about-factline li{
  display: grid;
  grid-template-columns: 74px minmax(0,1fr);
  gap: 10px;
  font-size: 13px;
  line-height: 1.7;
}

.page-about .about-factline span{
  font-family: var(--font-index);
  font-size: 11px;
  letter-spacing: .06em;
  color: var(--moss);
  padding-top: 3px;
}

.page-about .about-factline strong{
  font-weight: 500;
  color: var(--hall);
}

/* ---------- 覆盖与合作 ---------- */
.page-about .about-section--hall{
  color: var(--on-dark);
  background:
    radial-gradient(120% 120% at 82% 0%, rgba(192,138,62,.2), transparent 62%),
    var(--hall);
  border-top: 2px solid var(--brass);
}

.page-about .about-section--hall h2{
  color: var(--on-dark);
}

.page-about .about-section--hall .ky-eyebrow{
  color: var(--lamp);
}

.page-about .about-section--hall .about-head__lead{
  color: var(--on-dark-muted);
}

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

.page-about .about-eco-card{
  border: 1px solid var(--line-strong);
  background: rgba(252,248,240,.05);
  padding: 20px 18px;
  transition: background-color .2s ease, border-color .2s ease;
}

.page-about .about-eco-card:hover,
.page-about .about-eco-card:focus-within,
.page-about .about-eco-card:focus{
  background: rgba(192,138,62,.16);
  border-color: var(--brass);
  outline: none;
}

.page-about .about-eco-card__num{
  display: block;
  font-family: var(--font-index);
  font-size: clamp(28px, 5vw, 36px);
  line-height: 1;
  color: var(--lamp);
  margin-bottom: 12px;
}

.page-about .about-eco-card h3{
  font-size: 16px;
  color: var(--on-dark);
  margin-bottom: 8px;
}

.page-about .about-eco-card p{
  margin: 0;
  font-size: 13px;
  line-height: 1.8;
  color: var(--on-dark-muted);
}

.page-about .about-eco-copy{
  margin-top: 26px;
  max-width: 68ch;
  border-top: 1px solid var(--line-strong);
  padding-top: 20px;
}

.page-about .about-eco-copy p{
  color: var(--on-dark);
  opacity: .88;
  font-size: 15px;
}

.page-about .about-eco-copy__link{
  font-size: 14px;
  opacity: .9;
}

.page-about .about-eco-copy a{
  color: var(--lamp);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-about .about-eco-copy a:hover,
.page-about .about-eco-copy a:focus-visible{
  color: var(--on-dark);
}

/* ---------- 年度观察 ---------- */
.page-about .about-section--report{
  background: var(--paper);
}

.page-about .about-index-list{
  list-style: none;
  margin: 0 0 34px;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0,1fr);
  gap: 0;
  border-top: 2px solid var(--ink);
}

.page-about .about-index-list li{
  display: grid;
  grid-template-columns: 46px minmax(0,1fr);
  gap: 4px 14px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line-light);
}

.page-about .about-index-list__num{
  font-family: var(--font-index);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .08em;
  color: var(--brass);
  padding-top: 5px;
}

.page-about .about-index-list h3{
  font-size: 17px;
  margin: 0 0 6px;
}

.page-about .about-index-list p{
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink);
  max-width: 56ch;
}

.page-about .about-cta{
  display: grid;
  grid-template-columns: minmax(0,1fr);
  gap: 20px;
  padding: 26px 20px;
}

.page-about .about-cta__eyebrow{
  color: var(--lamp);
  margin: 0 0 8px;
}

.page-about .about-cta__title{
  color: var(--on-dark);
  font-size: clamp(20px, 3vw, 28px);
  margin: 0 0 10px;
}

.page-about .about-cta__body p{
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--on-dark-muted);
  max-width: 52ch;
}

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

.page-about .about-cta__links{
  margin: 14px 0 0;
  font-size: 13px;
  color: var(--moss);
}

.page-about .about-cta__links a{
  color: var(--hall);
  text-decoration: underline;
  text-underline-offset: 3px;
}

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

/* ---------- 断点 ---------- */
@media (min-width: 720px){
  .page-about .about-hero{
    padding-bottom: 64px;
  }

  .page-about .about-hero__visual img{
    aspect-ratio: 16 / 10;
  }

  .page-about .about-section{
    padding: 68px 0;
  }

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

  .page-about .about-index-list{
    grid-template-columns: repeat(2, minmax(0,1fr));
    column-gap: 40px;
  }

  .page-about .about-cta{
    padding: 34px 32px;
    grid-template-columns: minmax(0,1fr) auto;
    align-items: center;
  }
}

@media (min-width: 900px){
  .page-about .about-hero__inner{
    grid-template-columns: minmax(0,6fr) minmax(0,5fr);
    gap: 52px;
  }

  .page-about .about-hero__visual{
    order: -1;
  }

  .page-about .about-origin__grid{
    grid-template-columns: minmax(0,7fr) minmax(0,4fr);
    gap: 52px;
  }

  .page-about .about-lines__item{
    grid-template-columns: 72px minmax(0,1fr) 230px;
    gap: 10px 26px;
    align-items: start;
  }

  .page-about .about-lines__item--focus{
    padding: 28px 26px;
  }

  .page-about .about-corridor{
    grid-template-columns: minmax(0,4fr) minmax(0,7fr);
    gap: 46px;
    align-items: start;
  }

  .page-about .about-team{
    grid-template-columns: minmax(0,5fr) minmax(0,7fr);
    gap: 46px;
    align-items: start;
  }
}

@media (prefers-reduced-motion: reduce){
  .page-about .about-timeline__trigger,
  .page-about .about-team__tabs .ky-tabs__tab,
  .page-about .about-eco-card{
    transition: none;
  }
}