.page-about {
  --about-sect-gap: clamp(56px, 8vw, 108px);
  --about-soft: rgba(34, 38, 42, 0.7);
  background: var(--at-sand);
  color: var(--at-stone);
}

.page-about .about-hero__inner,
.page-about .about-section .at-wrap {
  padding-left: 22px;
  padding-right: 22px;
}

/* ---------- 首屏 ---------- */

.page-about .about-hero {
  position: relative;
  background:
    radial-gradient(120% 90% at 88% 6%, rgba(240, 138, 60, 0.28) 0%, rgba(240, 138, 60, 0) 58%),
    linear-gradient(158deg, var(--at-deep) 0%, var(--at-sea) 58%, #12719f 100%);
  color: #fff;
  padding-top: clamp(34px, 5vw, 62px);
  overflow: hidden;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  inset: auto -10% -30% auto;
  width: 460px;
  height: 460px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.16);
  pointer-events: none;
}

.page-about .about-hero__crumb {
  margin-bottom: clamp(24px, 3.4vw, 40px);
  position: relative;
  z-index: 1;
}

.page-about .about-hero__crumb a,
.page-about .about-hero__crumb span {
  color: rgba(255, 255, 255, 0.72);
}

.page-about .about-hero__eyebrow {
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: 0.2em;
  font-weight: 600;
  color: var(--at-orange);
  text-transform: uppercase;
}

.page-about .about-hero__title {
  color: #fff;
  margin: 0 0 22px;
  max-width: 18em;
}

.page-about .about-hero__lead {
  max-width: 58ch;
  color: rgba(255, 255, 255, 0.86);
  margin: 0 0 clamp(30px, 4vw, 46px);
}

.page-about .about-hero__facts {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0 0 clamp(34px, 4.6vw, 56px);
  position: relative;
  z-index: 1;
}

.page-about .about-hero__fact {
  border-left: 2px solid rgba(255, 255, 255, 0.28);
  padding-left: 14px;
}

.page-about .about-hero__fact dt {
  font-size: 12px;
  letter-spacing: 0.16em;
  color: rgba(255, 255, 255, 0.62);
  margin-bottom: 4px;
}

.page-about .about-hero__fact dd {
  margin: 0;
  font-size: 16px;
  line-height: 1.5;
  color: #fff;
}

.page-about .about-hero__fact .at-num {
  color: var(--at-sprout);
  font-size: 19px;
}

.page-about .about-hero__media {
  margin: 0;
  line-height: 0;
  position: relative;
}

.page-about .about-hero__media img {
  display: block;
  width: 100%;
  height: clamp(200px, 40vw, 420px);
  object-fit: cover;
}

.page-about .about-hero__cap {
  position: relative;
  z-index: 1;
  display: block;
  padding: 10px 22px;
  font-size: 12px;
  line-height: 1.6;
  letter-spacing: 0.04em;
  color: rgba(255, 255, 255, 0.78);
  background: var(--at-deep);
}

/* ---------- 通用段落 ---------- */

.page-about .about-section {
  padding: var(--about-sect-gap) 0;
}

.page-about .about-jump {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  margin-bottom: 16px;
  color: var(--at-sea);
}

.page-about .about-jump__num {
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  border-radius: 9px;
  background: var(--at-orange);
  color: #fff;
  font-family: var(--at-mono);
  font-size: 13px;
  font-weight: 600;
}

.page-about .about-jump__text {
  font-size: 12px;
  letter-spacing: 0.2em;
  font-weight: 600;
}

.page-about .about-link {
  color: var(--at-sea);
  text-decoration: none;
  border-bottom: 2px solid rgba(240, 138, 60, 0.55);
  padding-bottom: 1px;
}

.page-about .about-link:hover,
.page-about .about-link:focus-visible {
  border-bottom-color: var(--at-clay);
  color: var(--at-deep);
}

/* ---------- 来历时间线 ---------- */

.page-about .about-era {
  background: var(--at-sand);
}

.page-about .about-era__title,
.page-about .about-coverage__title,
.page-about .about-update__title,
.page-about .about-partners__title,
.page-about .about-team__title {
  max-width: 22em;
  margin: 0 0 14px;
}

.page-about .about-era__lead,
.page-about .about-coverage__lead,
.page-about .about-update__lead,
.page-about .about-partners__lead,
.page-about .about-team__lead {
  max-width: 60ch;
  margin: 0 0 clamp(34px, 4.6vw, 56px);
  color: var(--about-soft);
}

.page-about .about-era__track {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 18px;
}

.page-about .about-era__node {
  position: relative;
  background: #fff;
  border: 1px solid var(--at-line);
  border-radius: var(--at-r-md);
  padding: 20px 20px 22px;
}

.page-about .about-era__top {
  display: flex;
  align-items: center;
  gap: 12px;
  height: 28px;
  margin-bottom: 10px;
}

.page-about .about-era__dot {
  width: 14px;
  height: 14px;
  flex: none;
  border-radius: 50%;
  background: var(--at-orange);
  box-shadow: 0 0 0 4px rgba(240, 138, 60, 0.18);
}

.page-about .about-era__year {
  font-size: 17px;
  font-weight: 600;
  color: var(--at-ink);
}

.page-about .about-era__node-title {
  margin: 0 0 8px;
  font-size: 17px;
  line-height: 1.45;
  font-weight: 600;
  color: var(--at-sea);
}

.page-about .about-era__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--about-soft);
}

/* ---------- 覆盖地图 ---------- */

.page-about .about-coverage {
  background: linear-gradient(180deg, var(--at-tide) 0%, rgba(207, 230, 242, 0.35) 62%, var(--at-sand) 100%);
}

.page-about .about-coverage__body {
  display: grid;
  gap: 26px;
}

.page-about .about-map {
  position: relative;
  background: var(--at-glass);
  border: 1px solid var(--at-line-sea);
  border-radius: var(--at-r-lg);
  padding: 18px 16px 12px;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

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

.page-about .about-map__island {
  fill: rgba(14, 90, 138, 0.09);
  stroke: var(--at-sea);
  stroke-width: 1.4;
  stroke-dasharray: 5 4;
}

.page-about .about-map__dot {
  fill: var(--at-sea);
  stroke: #fff;
  stroke-width: 1.6;
  cursor: pointer;
  transition: transform 180ms ease, fill 180ms ease;
  transform-box: fill-box;
  transform-origin: center;
}

.page-about .about-map__dot--xl {
  fill: var(--at-sea);
}

.page-about .about-map__dot--l {
  fill: #17739f;
}

.page-about .about-map__dot--m {
  fill: var(--at-moss);
}

.page-about .about-map__dot--s {
  fill: var(--at-sprout);
}

.page-about .about-map__dot:hover,
.page-about .about-map__dot:focus-visible {
  fill: var(--at-orange);
  transform: scale(1.22);
  outline: none;
}

.page-about .about-map__legend {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  margin: 6px 0 4px;
  padding: 12px 4px 6px;
  border-top: 1px solid var(--at-line-sea);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--about-soft);
}

.page-about .about-map__legend-item {
  display: inline-flex;
  align-items: center;
  gap: 7px;
}

.page-about .about-map__swatch {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  display: inline-block;
}

.page-about .about-map__swatch--xl {
  background: var(--at-sea);
}

.page-about .about-map__swatch--m {
  background: var(--at-moss);
}

.page-about .about-map__swatch--s {
  background: var(--at-sprout);
}

.page-about .about-coverage__panel {
  display: grid;
  gap: 14px;
}

.page-about .about-coverage__row {
  display: grid;
  grid-template-columns: 1fr auto auto;
  align-items: baseline;
  gap: 4px 10px;
  background: #fff;
  border-radius: var(--at-r-md);
  border-left: 4px solid var(--at-sea);
  padding: 16px 18px;
}

.page-about .about-coverage__city {
  font-size: 16px;
  font-weight: 600;
  color: var(--at-deep);
}

.page-about .about-coverage__count {
  font-size: 30px;
  font-weight: 600;
  color: var(--at-ink);
  line-height: 1;
}

.page-about .about-coverage__unit {
  font-size: 13px;
  color: var(--about-soft);
}

.page-about .about-coverage__note {
  grid-column: 1 / -1;
  margin: 6px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--about-soft);
}

.page-about .about-coverage__foot {
  margin: 8px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--about-soft);
}

.page-about .about-coverage__figure {
  margin: clamp(34px, 4.6vw, 58px) 0 0;
  line-height: 0;
}

.page-about .about-coverage__figure img {
  display: block;
  width: 100%;
  height: clamp(190px, 34vw, 360px);
  object-fit: cover;
}

.page-about .about-coverage__cap {
  display: block;
  padding: 10px 22px;
  font-size: 12px;
  line-height: 1.6;
  letter-spacing: 0.05em;
  color: var(--about-soft);
  background: rgba(255, 255, 255, 0.7);
}

/* ---------- 更新节奏 ---------- */

.page-about .about-update {
  background: #fff;
}

.page-about .about-update__flow {
  display: grid;
  gap: 18px;
}

.page-about .about-flow-card {
  position: relative;
  border-radius: var(--at-r-md);
  padding: 24px 22px 26px;
  background: var(--at-sand);
  border: 1px solid var(--at-line);
}

.page-about .about-flow-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 24px;
  bottom: 24px;
  width: 4px;
  border-radius: 0 4px 4px 0;
}

.page-about .about-flow-card--sea::before {
  background: var(--at-sea);
}

.page-about .about-flow-card--moss::before {
  background: var(--at-moss);
}

.page-about .about-flow-card--orange::before {
  background: var(--at-orange);
}

.page-about .about-flow-card__tag {
  margin: 0 0 12px;
}

.page-about .about-flow-card__title {
  margin: 0 0 10px;
  font-size: 19px;
  line-height: 1.4;
  font-weight: 600;
  color: var(--at-deep);
}

.page-about .about-flow-card__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--about-soft);
}

/* ---------- 合作生态 ---------- */

.page-about .about-partners {
  background: var(--at-deep);
  color: rgba(255, 255, 255, 0.84);
}

.page-about .about-partners .about-jump {
  color: var(--at-sprout);
}

.page-about .about-partners__title {
  color: #fff;
}

.page-about .about-partners__lead {
  color: rgba(255, 255, 255, 0.72);
}

.page-about .about-partners__grid {
  display: grid;
  gap: 16px;
}

.page-about .about-partners__item {
  border-radius: var(--at-r-md);
  padding: 22px 20px 24px;
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.14);
}

.page-about .about-partners__num {
  display: block;
  font-size: clamp(34px, 7vw, 46px);
  font-weight: 600;
  line-height: 1;
  color: var(--at-orange);
  margin-bottom: 6px;
}

.page-about .about-partners__label {
  margin: 0 0 10px;
  font-size: 16px;
  font-weight: 600;
  color: #fff;
}

.page-about .about-partners__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: rgba(255, 255, 255, 0.74);
}

.page-about .about-partners__foot {
  margin: clamp(26px, 3.4vw, 38px) 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.78);
}

.page-about .about-partners .about-link {
  color: var(--at-sprout);
  border-bottom-color: rgba(168, 213, 162, 0.6);
}

.page-about .about-partners .about-link:hover,
.page-about .about-partners .about-link:focus-visible {
  color: #fff;
  border-bottom-color: #fff;
}

/* ---------- 团队 ---------- */

.page-about .about-team {
  background: var(--at-sand);
}

.page-about .about-team__grid {
  display: grid;
  gap: 28px;
}

.page-about .about-team__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
  border-top: 1px solid var(--at-line);
}

.page-about .about-team__item {
  display: grid;
  grid-template-columns: 62px 1fr;
  gap: 2px 14px;
  padding: 15px 0;
  border-bottom: 1px solid var(--at-line);
}

.page-about .about-team__role-num {
  grid-row: span 2;
  font-size: 30px;
  font-weight: 600;
  line-height: 1.1;
  color: var(--at-sea);
}

.page-about .about-team__role {
  font-size: 16px;
  font-weight: 600;
  color: var(--at-deep);
}

.page-about .about-team__desc {
  font-size: 14px;
  line-height: 1.72;
  color: var(--about-soft);
}

.page-about .about-team__figure {
  margin: 0;
  line-height: 0;
  position: relative;
}

.page-about .about-team__figure img {
  display: block;
  width: 100%;
  height: clamp(220px, 44vw, 420px);
  object-fit: cover;
  border-radius: var(--at-r-lg);
}

.page-about .about-team__cap {
  display: block;
  margin-top: 10px;
  font-size: 12px;
  line-height: 1.6;
  letter-spacing: 0.05em;
  color: var(--about-soft);
}

.page-about .about-team__outro {
  margin-top: clamp(30px, 4vw, 48px);
  padding: 24px 22px;
  border-radius: var(--at-r-md);
  background: var(--at-glass);
  border: 1px solid var(--at-line-sea);
  display: grid;
  gap: 18px;
}

.page-about .about-team__outro-text {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--about-soft);
}

.page-about .about-team__cta {
  justify-self: start;
}

/* ---------- 窄屏收口 ---------- */

@media (max-width: 359px) {
  .page-about .about-hero__inner,
  .page-about .about-section .at-wrap {
    padding-left: 16px;
    padding-right: 16px;
  }

  .page-about .about-team__item {
    grid-template-columns: 52px 1fr;
  }
}

/* ---------- 平板 ---------- */

@media (min-width: 720px) {
  .page-about .about-hero__facts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0;
  }

  .page-about .about-hero__fact {
    padding-right: 20px;
  }

  .page-about .about-coverage__row {
    grid-template-columns: minmax(0, 1fr) auto auto;
  }

  .page-about .about-update__flow {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
  }

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

  .page-about .about-team__outro {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }

  .page-about .about-team__cta {
    justify-self: end;
  }
}

/* ---------- 桌面 ---------- */

@media (min-width: 980px) {
  .page-about .about-coverage__body {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
    gap: 40px;
    align-items: start;
  }

  .page-about .about-team__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.86fr);
    gap: 48px;
    align-items: center;
  }

  .page-about .about-era__track {
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 0;
    position: relative;
    padding-top: 10px;
  }

  .page-about .about-era__track::before {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    top: 23px;
    height: 2px;
    background: linear-gradient(90deg, var(--at-orange), var(--at-sea) 52%, var(--at-tide));
  }

  .page-about .about-era__node {
    background: none;
    border: 0;
    border-radius: 0;
    padding: 0 26px 0 0;
  }

  .page-about .about-era__top {
    position: relative;
    z-index: 1;
    margin-bottom: 16px;
  }

  .page-about .about-era__dot {
    box-shadow: 0 0 0 6px var(--at-sand);
  }

  .page-about .about-era__node-title {
    font-size: 16px;
  }
}

@media (min-width: 1180px) {
  .page-about .about-hero__inner {
    padding-top: clamp(10px, 1.6vw, 26px);
  }

  .page-about .about-hero__media img {
    height: clamp(300px, 34vw, 470px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-map__dot {
    transition: none;
  }

  .page-about .about-map__dot:hover,
  .page-about .about-map__dot:focus-visible {
    transform: none;
  }
}
<<<END>>>