.page-about {
  --about-track-col: 84px;
  --about-panel: #10221C;
}

/* ---------- 首屏 ---------- */
.page-about .about-intro {
  padding: 26px 0 72px;
}
.page-about .about-intro__grid {
  display: grid;
  gap: 36px;
}
.page-about .about-intro__title {
  margin: 10px 0 20px;
  font-size: clamp(30px, 6.4vw, 52px);
  line-height: 1.16;
  letter-spacing: .01em;
  color: var(--mist);
  max-width: 15em;
}
.page-about .about-intro__lede {
  margin: 0 0 28px;
  font-size: 16px;
  line-height: 1.9;
  color: var(--sand);
  max-width: 36em;
}
.page-about .about-intro__facts {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line);
  border-radius: 4px;
  overflow: hidden;
}
.page-about .about-intro__facts li {
  background: var(--ink-2);
  padding: 14px 16px 16px;
}
.page-about .about-intro__facts .mono {
  display: block;
  font-size: 22px;
  line-height: 1.2;
  color: var(--copper-lit);
  letter-spacing: .02em;
}
.page-about .about-intro__fact-label {
  display: block;
  margin-top: 5px;
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--sand);
}
.page-about .about-intro__media {
  margin: 0;
}
.page-about .about-intro__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  border-radius: 4px;
  filter: saturate(.92) contrast(1.06);
}

/* ---------- 时间线双轨 ---------- */
.page-about .about-track {
  padding: 64px 0 16px;
}
.page-about .track {
  list-style: none;
  margin: 8px 0 0;
  padding: 0;
}
.page-about .track__row {
  position: relative;
  display: grid;
  grid-template-columns: var(--about-track-col) minmax(0, 1fr);
  column-gap: 16px;
  padding: 26px 0;
}
.page-about .track__row::before {
  content: "";
  position: absolute;
  left: 11px;
  top: 0;
  bottom: 0;
  width: 1px;
  background: linear-gradient(180deg, rgba(184, 115, 51, .55), rgba(184, 115, 51, .1));
}
.page-about .track__row:first-child::before {
  top: 32px;
}
.page-about .track__row:last-child::before {
  bottom: calc(100% - 44px);
}
.page-about .track__marker {
  position: relative;
  padding-top: 2px;
}
.page-about .track__dot {
  position: absolute;
  left: 11px;
  top: 8px;
  width: 13px;
  height: 13px;
  margin-left: -6px;
  border-radius: 50%;
  background: var(--ink-2);
  border: 1px solid var(--copper);
  transition: border-color .45s var(--ease), box-shadow .45s var(--ease), background-color .45s var(--ease);
}
.page-about .track__row.is-visible .track__dot {
  border-color: var(--amber);
  background: rgba(255, 158, 44, .22);
  box-shadow: 0 0 0 4px rgba(255, 158, 44, .1);
}
.page-about .track__year {
  display: block;
  padding-left: 26px;
  font-size: 14px;
  letter-spacing: .04em;
  color: var(--copper-lit);
}
.page-about .track__body {
  padding-bottom: 6px;
}
.page-about .track__title {
  margin: 0 0 10px;
  font-size: 19px;
  line-height: 1.4;
  letter-spacing: .04em;
  color: var(--mist);
}
.page-about .track__text {
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.9;
  color: var(--sand);
  max-width: 40em;
}
.page-about .track__metric {
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 12px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--steel);
}

/* ---------- 服务网络 ---------- */
.page-about .about-network {
  padding: 64px 0 24px;
}
.page-about .about-network__grid {
  display: grid;
  gap: 32px;
}
.page-about .about-network__map {
  padding: 22px;
  background: var(--about-panel);
  border: 1px solid var(--line);
  border-radius: 4px;
}
.page-about .dotmap {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
  max-width: 320px;
}
.page-about .dotmap__cell {
  position: relative;
  aspect-ratio: 1 / 1;
  border-radius: 3px;
  background: var(--ink);
  border: 1px solid var(--line);
  transition: border-color .25s var(--ease), background-color .25s var(--ease);
}
.page-about .dotmap__cell--hub {
  background: linear-gradient(145deg, rgba(255, 158, 44, .88), rgba(184, 115, 51, .5));
  border-color: rgba(255, 158, 44, .8);
  box-shadow: 0 0 0 1px rgba(255, 158, 44, .18), 0 8px 20px -12px rgba(255, 158, 44, .7);
}
.page-about .dotmap__cell:hover,
.page-about .dotmap__cell:focus-visible {
  border-color: var(--copper-lit);
  outline: none;
}
.page-about .dotmap__label {
  position: absolute;
  left: 50%;
  bottom: calc(100% + 8px);
  transform: translate(-50%, 4px);
  white-space: nowrap;
  padding: 5px 9px;
  font-size: 11px;
  letter-spacing: .04em;
  color: var(--mist);
  background: var(--abyss);
  border: 1px solid var(--line);
  border-radius: 3px;
  opacity: 0;
  pointer-events: none;
  transition: opacity .2s var(--ease), transform .2s var(--ease);
  z-index: 4;
}
.page-about .dotmap__cell:hover .dotmap__label,
.page-about .dotmap__cell:focus-visible .dotmap__label {
  opacity: 1;
  transform: translate(-50%, 0);
}
.page-about .dotmap__legend {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 18px 0 0;
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--sand);
}
.page-about .dotmap__key {
  width: 12px;
  height: 12px;
  border-radius: 3px;
  background: linear-gradient(145deg, rgba(255, 158, 44, .88), rgba(184, 115, 51, .5));
}
.page-about .net-cards {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}
.page-about .net-card {
  padding: 18px 20px;
  background: var(--ink-2);
  border: 1px solid var(--line);
  border-left: 2px solid var(--copper);
  border-radius: 3px;
}
.page-about .net-card__num {
  display: block;
  font-size: 26px;
  letter-spacing: .02em;
  color: var(--copper-lit);
}
.page-about .net-card__title {
  margin: 8px 0 8px;
  font-size: 15px;
  letter-spacing: .08em;
  color: var(--mist);
}
.page-about .net-card__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--sand);
}
.page-about .about-network__media {
  margin: 34px 0 0;
}
.page-about .about-network__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: 4px;
  filter: saturate(.85) brightness(.95);
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  padding: 64px 0 24px;
}
.page-about .about-team__grid {
  display: grid;
  gap: 30px;
}
.page-about .talent-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 24px;
}
.page-about .talent__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
}
.page-about .talent__name {
  font-size: 15px;
  letter-spacing: .06em;
  color: var(--mist);
}
.page-about .talent__num {
  font-size: 16px;
  color: var(--copper-lit);
}
.page-about .talent__bar {
  position: relative;
  height: 8px;
  border-radius: 999px;
  background: var(--line);
  overflow: hidden;
}
.page-about .talent__fill {
  display: block;
  height: 100%;
  width: var(--w, 0%);
  border-radius: 999px;
  background: linear-gradient(90deg, var(--copper), var(--amber));
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform .9s var(--ease);
}
.page-about .talent.is-visible .talent__fill {
  transform: scaleX(1);
}
.page-about .talent__note {
  margin: 10px 0 0;
  font-size: 13px;
  line-height: 1.8;
  color: var(--sand);
}
.page-about .about-team__media {
  margin: 0;
}
.page-about .about-team__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 14 / 9;
  object-fit: cover;
  border-radius: 4px;
  filter: saturate(.8) brightness(.92);
}
.page-about .sla-row {
  list-style: none;
  margin: 36px 0 0;
  padding: 22px 0;
  display: grid;
  gap: 18px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.page-about .sla-row__item .mono {
  display: block;
  font-size: 20px;
  letter-spacing: .02em;
  color: var(--mist);
}
.page-about .sla-row__label {
  display: block;
  margin-top: 5px;
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--steel);
}
.page-about .about-team__note {
  margin: 20px 0 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--sand);
}
.page-about .about-team__note a,
.page-about .about-standard__tail a {
  color: var(--copper-lit);
  text-decoration: none;
  border-bottom: 1px solid rgba(216, 154, 85, .45);
  transition: color .2s var(--ease), border-color .2s var(--ease);
}
.page-about .about-team__note a:hover,
.page-about .about-standard__tail a:hover {
  color: var(--amber);
  border-color: var(--amber);
}

/* ---------- 服务标准与专区生态 ---------- */
.page-about .about-standard {
  padding: 64px 0 24px;
}
.page-about .about-standard__grid {
  display: grid;
  gap: 30px;
}
.page-about .about-standard__sub {
  margin: 0 0 18px;
  font-size: 17px;
  letter-spacing: .06em;
  color: var(--mist);
}
.page-about .cycle-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line);
  border-radius: 4px;
  overflow: hidden;
}
.page-about .cycle-item {
  display: grid;
  grid-template-columns: 78px minmax(0, 1fr);
  align-items: center;
  gap: 14px;
  padding: 14px 16px;
  background: var(--ink-2);
  transition: background-color .2s var(--ease);
}
.page-about .cycle-item:hover {
  background: #16302A;
}
.page-about .cycle-item__name {
  font-size: 15px;
  letter-spacing: .08em;
  color: var(--amber);
}
.page-about .cycle-item__text {
  font-size: 14px;
  line-height: 1.8;
  color: var(--sand);
}
.page-about .about-standard__tail {
  margin: 20px 0 0;
  font-size: 14px;
  line-height: 1.9;
  color: var(--sand);
}
.page-about .about-standard__side {
  display: grid;
  gap: 16px;
  align-content: start;
}
.page-about .partner-box {
  padding: 22px;
  background: linear-gradient(160deg, rgba(184, 115, 51, .16), rgba(18, 38, 31, .9));
  border: 1px solid var(--line);
  border-radius: 4px;
}
.page-about .partner-box__num {
  display: block;
  font-size: 44px;
  line-height: 1;
  letter-spacing: .01em;
  color: var(--copper-lit);
}
.page-about .partner-box__text {
  margin: 14px 0 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--sand);
}
.page-about .standard-notes {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line);
  border-radius: 4px;
  overflow: hidden;
}
.page-about .standard-notes li {
  position: relative;
  padding: 14px 16px 14px 30px;
  background: var(--ink-2);
  font-size: 13px;
  line-height: 1.8;
  color: var(--sand);
}
.page-about .standard-notes li::before {
  content: "";
  position: absolute;
  left: 15px;
  top: 21px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--steel);
}

/* ---------- 行业认可 ---------- */
.page-about .about-honor {
  padding: 64px 0 24px;
}
.page-about .honor-strip {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 16px;
}
.page-about .honor-strip__item {
  padding: 20px 22px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--ink-2);
}
.page-about .honor-strip__tag {
  display: inline-block;
  padding: 4px 10px;
  font-size: 12px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--ink);
  background: var(--copper-lit);
  border-radius: 2px;
}
.page-about .honor-strip__num {
  display: block;
  font-size: 34px;
  line-height: 1;
  letter-spacing: .01em;
  color: var(--copper-lit);
}
.page-about .honor-strip__text {
  margin: 12px 0 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--sand);
}
.page-about .about-honor__note {
  margin: 26px 0 0;
  padding-left: 18px;
  border-left: 2px solid var(--steel);
  font-size: 14px;
  line-height: 1.9;
  color: var(--steel);
  max-width: 46em;
}

/* ---------- 结尾 ---------- */
.page-about .about-outro {
  margin-top: 72px;
  padding: 56px 0 72px;
  background: linear-gradient(180deg, var(--about-panel), var(--ink));
  border-top: 1px solid var(--line);
}
.page-about .about-outro__inner {
  display: grid;
  gap: 26px;
}
.page-about .about-outro__title {
  margin: 0 0 12px;
  font-size: clamp(22px, 3.4vw, 32px);
  line-height: 1.35;
  letter-spacing: .02em;
  color: var(--mist);
  max-width: 20em;
}
.page-about .about-outro__lede {
  margin: 0;
  font-size: 15px;
  line-height: 1.9;
  color: var(--sand);
  max-width: 40em;
}
.page-about .about-outro__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 断点 ---------- */
@media (min-width: 720px) {
  .page-about {
    --about-track-col: 118px;
  }
  .page-about .about-intro__facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .page-about .sla-row {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 24px;
  }
  .page-about .net-cards {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-about .honor-strip {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 960px) {
  .page-about {
    --about-track-col: 140px;
  }
  .page-about .about-intro {
    padding: 34px 0 96px;
  }
  .page-about .about-intro__grid {
    grid-template-columns: minmax(0, 1fr) minmax(280px, 400px);
    align-items: center;
    gap: 56px;
  }
  .page-about .about-network__grid {
    grid-template-columns: minmax(280px, 380px) minmax(0, 1fr);
    align-items: start;
    gap: 40px;
  }
  .page-about .about-network__media {
    margin-top: 40px;
  }
  .page-about .about-team__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
    align-items: center;
    gap: 48px;
  }
  .page-about .about-standard__grid {
    grid-template-columns: minmax(0, 1.25fr) minmax(280px, 380px);
    align-items: start;
    gap: 44px;
  }
  .page-about .about-outro__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 40px;
  }
}

@media (min-width: 1200px) {
  .page-about .about-intro__title {
    font-size: 54px;
  }
  .page-about .track__row {
    column-gap: 26px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .talent__fill {
    transform: scaleX(1);
    transition: none;
  }
  .page-about .track__dot,
  .page-about .dotmap__cell,
  .page-about .dotmap__label,
  .page-about .cycle-item {
    transition: none;
  }
}
</main>

.page-about {
  --w: 1rem;
}