.page-about {
  --about-hair: rgba(0, 229, 195, .16);
  --about-hair-soft: rgba(244, 247, 246, .1);
  --about-measure: 60ch;
  display: block;
  color: var(--text);
  background:
    radial-gradient(1100px 520px at 84% -8%, rgba(0, 229, 195, .1), transparent 62%),
    radial-gradient(880px 460px at 2% 26%, rgba(212, 168, 67, .07), transparent 60%);
  overflow-x: clip;
}

.page-about .section {
  padding-block: clamp(2.4rem, 5.5vw, 4.6rem);
}

/* ---------- 面包屑 ---------- */
.page-about .about-crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .55rem;
  font-family: var(--font-mono);
  font-size: .75rem;
  letter-spacing: .07em;
  color: var(--text-dim);
}
.page-about .about-crumbs a {
  color: var(--text-soft);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  padding-bottom: 1px;
  transition: color .25s var(--ease), border-color .25s var(--ease);
}
.page-about .about-crumbs a:hover,
.page-about .about-crumbs a:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}
.page-about .about-crumbs [aria-current="page"] {
  color: var(--gold);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding-block: clamp(1.2rem, 3vw, 2rem) clamp(2rem, 4.5vw, 3.4rem);
}
.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.6rem, 4vw, 2.8rem);
  align-items: end;
  padding-block: clamp(1.6rem, 4vw, 3rem) clamp(1.4rem, 3.5vw, 2.4rem);
}
.page-about .about-hero__lead > .eyebrow {
  margin-bottom: .9rem;
}
.page-about .about-hero__lead .display--xl {
  margin: 0 0 1.1rem;
}
.page-about .about-hero__lead .lede {
  max-width: var(--about-measure);
  margin: 0;
}
.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: .7rem;
  margin-top: 1.6rem;
}

.page-about .about-hero__marks {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .6rem;
}
.page-about .about-hero__marks li {
  display: flex;
  align-items: baseline;
  gap: .8rem;
  padding: .72rem 1rem;
  border-radius: var(--r-md);
  border: 1px solid var(--about-hair-soft);
  background: linear-gradient(120deg, rgba(18, 60, 52, .66), rgba(10, 42, 36, .34));
  transition: border-color .3s var(--ease), transform .3s var(--ease);
}
.page-about .about-hero__marks li:hover {
  border-color: var(--about-hair);
  transform: translateY(-2px);
}
.page-about .about-hero__marks .mono {
  font-family: var(--font-mono);
  font-size: 1.3rem;
  font-weight: 700;
  line-height: 1;
  color: var(--cyan);
  min-width: 3.6ch;
}
.page-about .about-hero__marks li > span:last-child {
  font-size: .88rem;
  line-height: 1.5;
  color: var(--text-soft);
}

.page-about .about-hero__media {
  margin-top: clamp(.6rem, 2vw, 1.2rem);
}

/* ---------- 通用图框 ---------- */
.page-about .about-frame {
  margin: 0;
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid var(--about-hair-soft);
  background: linear-gradient(140deg, rgba(0, 229, 195, .14), rgba(18, 60, 52, .86) 52%, rgba(212, 168, 67, .14));
}
.page-about .about-frame img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}
.page-about .about-frame__cap {
  margin: .75rem 0 0;
  padding: 0 .3rem;
  font-size: .82rem;
  line-height: 1.6;
  color: var(--text-dim);
}

/* ---------- 区块标题带 ---------- */
.page-about .about-head {
  margin-bottom: clamp(1.5rem, 3.4vw, 2.6rem);
}
.page-about .about-head .lede {
  max-width: var(--about-measure);
  margin-top: .9rem;
}

/* ---------- 起点 ---------- */
.page-about .about-origin__grid {
  align-items: start;
  gap: clamp(1.2rem, 3vw, 2rem);
}
.page-about .about-origin__body p {
  max-width: 58ch;
  margin: 0 0 1.05rem;
}
.page-about .about-origin__body p:last-child {
  margin-bottom: 0;
}
.page-about .about-origin__anchor {
  position: relative;
  padding: clamp(1.2rem, 3vw, 1.8rem);
  border-radius: var(--r-lg);
  border: 1px solid var(--line-gold);
  background: linear-gradient(155deg, rgba(212, 168, 67, .12), rgba(10, 42, 36, .72) 62%);
}
.page-about .about-origin__anchor-k {
  margin: 0;
  font-size: .72rem;
  letter-spacing: .12em;
  color: var(--gold);
  text-transform: uppercase;
}
.page-about .about-origin__anchor-v {
  margin: .7rem 0 0;
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 4.4vw, 2.1rem);
  font-weight: 800;
  line-height: 1.18;
  letter-spacing: -.01em;
  color: var(--mist);
}
.page-about .about-origin__rule {
  display: block;
  height: 1px;
  margin: 1.1rem 0;
  background: linear-gradient(90deg, var(--gold), rgba(212, 168, 67, .05));
}
.page-about .about-origin__anchor-n {
  margin: 0;
  font-size: .9rem;
  line-height: 1.75;
  color: var(--text-soft);
}

/* ---------- 双入口 ---------- */
.page-about .about-dual {
  position: relative;
}
.page-about .about-dual::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--about-hair), transparent);
}
.page-about .about-dual__rail {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(.9rem, 2.4vw, 1.4rem);
}
.page-about .about-dual__card {
  display: flex;
  flex-direction: column;
  gap: .8rem;
  padding: clamp(1.3rem, 3vw, 1.9rem);
  border-radius: var(--r-lg);
  border: 1px solid var(--about-hair-soft);
  background: linear-gradient(160deg, rgba(18, 60, 52, .6), rgba(10, 42, 36, .3));
  transition: border-color .3s var(--ease), transform .3s var(--ease);
}
.page-about .about-dual__card:hover {
  border-color: var(--about-hair);
  transform: translateY(-3px);
}
.page-about .about-dual__card--alt {
  background: linear-gradient(160deg, rgba(0, 229, 195, .12), rgba(10, 42, 36, .42));
}
.page-about .about-dual__idx {
  margin: 0;
  font-size: .74rem;
  letter-spacing: .12em;
  color: var(--gold);
}
.page-about .about-dual__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 3vw, 1.6rem);
  font-weight: 800;
  letter-spacing: -.01em;
  color: var(--mist);
}
.page-about .about-dual__desc {
  margin: 0;
  font-size: .95rem;
  line-height: 1.75;
  color: var(--text-soft);
}
.page-about .about-dual__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: .5rem;
}
.page-about .about-dual__list li {
  position: relative;
  padding-left: 1.05rem;
  font-size: .88rem;
  line-height: 1.65;
  color: var(--text-soft);
}
.page-about .about-dual__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .62em;
  width: .45rem;
  height: 1px;
  background: var(--cyan);
}
.page-about .about-dual__link {
  margin-top: auto;
  padding-top: .8rem;
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .06em;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  align-self: flex-start;
  transition: color .25s var(--ease), border-color .25s var(--ease);
}
.page-about .about-dual__link:hover,
.page-about .about-dual__link:focus-visible {
  color: var(--gold);
  border-bottom-color: var(--gold);
}

/* ---------- 时间轴 ---------- */
.page-about .about-tl {
  list-style: none;
  margin: 0;
  padding: 0 0 0 1.75rem;
  position: relative;
  display: grid;
  gap: clamp(1.4rem, 3.4vw, 2.2rem);
}
.page-about .about-tl::before {
  content: "";
  position: absolute;
  left: .35rem;
  top: .6rem;
  bottom: .6rem;
  width: 1px;
  background: linear-gradient(180deg, var(--cyan), rgba(0, 229, 195, .14) 72%, transparent);
}
.page-about .about-tl__node {
  position: relative;
}
.page-about .about-tl__node::before {
  content: "";
  position: absolute;
  left: -1.78rem;
  top: .42rem;
  width: .75rem;
  height: .75rem;
  border-radius: 50%;
  background: var(--ink);
  border: 2px solid var(--cyan);
  transition: border-color .3s var(--ease), transform .3s var(--ease);
}
.page-about .about-tl__node:hover::before {
  border-color: var(--gold);
  transform: scale(1.14);
}
.page-about .about-tl__node--now::before {
  border-color: var(--gold);
  box-shadow: 0 0 0 4px rgba(212, 168, 67, .14);
}
.page-about .about-tl__stamp {
  margin: 0 0 .45rem;
  font-size: .76rem;
  letter-spacing: .08em;
  color: var(--gold);
}
.page-about .about-tl__title {
  margin: 0 0 .45rem;
  font-family: var(--font-display);
  font-size: clamp(1.05rem, 2.6vw, 1.3rem);
  font-weight: 800;
  letter-spacing: -.01em;
  color: var(--mist);
}
.page-about .about-tl__text {
  margin: 0;
  max-width: 56ch;
  font-size: .95rem;
  line-height: 1.75;
  color: var(--text-soft);
}
.page-about .about-tl__note {
  margin: .6rem 0 0;
  max-width: 56ch;
  padding: .5rem .9rem;
  border-left: 2px solid var(--about-hair);
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  background: rgba(244, 247, 246, .03);
  font-size: .84rem;
  line-height: 1.7;
  color: var(--text-dim);
  transition: color .3s var(--ease), border-color .3s var(--ease), background-color .3s var(--ease);
}
.page-about .about-tl__node:hover .about-tl__note,
.page-about .about-tl__node:focus-within .about-tl__note {
  color: var(--text);
  border-left-color: var(--gold);
  background: rgba(212, 168, 67, .08);
}

/* ---------- 团队 ---------- */
.page-about .about-team__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.4rem, 3.4vw, 2.4rem);
  align-items: start;
}
.page-about .about-frame--team {
  max-width: 100%;
}
.page-about .about-team__body p {
  max-width: 58ch;
  margin: 0 0 1.05rem;
}
.page-about .about-team__stats {
  list-style: none;
  margin: 1.5rem 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: .8rem;
}
.page-about .about-team__stats li {
  display: flex;
  flex-direction: column;
  gap: .3rem;
  padding: .9rem 1rem;
  border-radius: var(--r-md);
  border: 1px solid var(--about-hair-soft);
  background: rgba(18, 60, 52, .42);
  transition: border-color .3s var(--ease);
}
.page-about .about-team__stats li:hover {
  border-color: var(--line-gold);
}
.page-about .about-team__stats .mono {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1;
  color: var(--cyan);
}
.page-about .about-team__stats li > span:last-child {
  font-size: .8rem;
  line-height: 1.5;
  color: var(--text-dim);
}

/* ---------- 资质 ---------- */
.page-about .about-honor__grid {
  align-items: stretch;
}
.page-about .about-honor__card {
  display: flex;
  flex-direction: column;
  gap: .7rem;
  padding: clamp(1.3rem, 3vw, 1.7rem);
  border-radius: var(--r-lg);
  border: 1px solid var(--about-hair-soft);
  background: linear-gradient(160deg, rgba(18, 60, 52, .58), rgba(10, 42, 36, .3));
  transition: border-color .3s var(--ease), transform .3s var(--ease);
}
.page-about .about-honor__card:hover {
  border-color: var(--line-gold);
  transform: translateY(-3px);
}
.page-about .about-honor__card--gold {
  background: linear-gradient(160deg, rgba(212, 168, 67, .16), rgba(10, 42, 36, .5) 64%);
  border-color: var(--line-gold);
}
.page-about .about-honor__no {
  margin: 0;
  font-size: .74rem;
  letter-spacing: .12em;
  color: var(--gold);
}
.page-about .about-honor__name {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.05rem, 2.5vw, 1.22rem);
  font-weight: 800;
  line-height: 1.4;
  letter-spacing: -.01em;
  color: var(--mist);
}
.page-about .about-honor__desc {
  margin: 0;
  font-size: .9rem;
  line-height: 1.72;
  color: var(--text-soft);
}
.page-about .about-honor__cat {
  margin: auto 0 0;
  padding-top: .9rem;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .1em;
  color: var(--text-dim);
  opacity: .55;
  transform: translateY(3px);
  transition: opacity .3s var(--ease), transform .3s var(--ease), color .3s var(--ease);
}
.page-about .about-honor__card:hover .about-honor__cat,
.page-about .about-honor__card:focus-within .about-honor__cat {
  opacity: 1;
  transform: none;
  color: var(--gold);
}
.page-about .about-honor__fig {
  margin: 0;
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid var(--about-hair-soft);
  background: linear-gradient(150deg, rgba(212, 168, 67, .1), rgba(18, 60, 52, .7));
}
.page-about .about-honor__fig img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 结尾行动区 ---------- */
.page-about .about-cta__panel {
  position: relative;
  padding: clamp(1.6rem, 4.4vw, 3rem);
  border-radius: var(--r-xl);
  border: 1px solid var(--about-hair);
  background:
    radial-gradient(620px 300px at 88% 0%, rgba(0, 229, 195, .16), transparent 66%),
    linear-gradient(150deg, rgba(18, 60, 52, .82), rgba(10, 42, 36, .5));
  overflow: hidden;
}
.page-about .about-cta__panel::after {
  content: "";
  position: absolute;
  right: -12%;
  top: -40%;
  width: 46%;
  height: 180%;
  background: linear-gradient(90deg, transparent, rgba(212, 168, 67, .09), transparent);
  transform: rotate(18deg);
  pointer-events: none;
}
.page-about .about-cta__panel .display--md {
  margin: .8rem 0 0;
  max-width: 24ch;
}
.page-about .about-cta__desc {
  max-width: 56ch;
  margin: 1rem 0 0;
  font-size: .98rem;
  line-height: 1.78;
  color: var(--text-soft);
}
.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: .7rem;
  margin-top: 1.7rem;
}

/* ---------- 窄屏微调 ---------- */
@media (max-width: 520px) {
  .page-about .about-crumbs {
    font-size: .7rem;
  }
  .page-about .about-hero__actions .btn,
  .page-about .about-cta__actions .btn {
    flex: 1 1 100%;
    justify-content: center;
    text-align: center;
  }
  .page-about .about-team__stats {
    grid-template-columns: 1fr;
  }
  .page-about .about-hero__marks .mono {
    font-size: 1.15rem;
    min-width: 3.2ch;
  }
}

/* ---------- 中等宽度 ---------- */
@media (min-width: 720px) {
  .page-about .about-dual__rail {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-about .about-team__grid {
    grid-template-columns: minmax(0, .92fr) minmax(0, 1.08fr);
  }
  .page-about .about-frame--team {
    position: sticky;
    top: calc(var(--header-h) + 1.4rem);
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 960px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.65fr) minmax(0, 1fr);
  }
  .page-about .about-tl {
    padding-left: 2.2rem;
  }
  .page-about .about-tl::before {
    left: .5rem;
  }
  .page-about .about-tl__node::before {
    left: -2.2rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-hero__marks li,
  .page-about .about-dual__card,
  .page-about .about-honor__card,
  .page-about .about-tl__node::before,
  .page-about .about-honor__cat,
  .page-about .about-tl__note {
    transition: none;
  }
  .page-about .about-frame--team {
    position: static;
  }
}
</main>