.page-about {
  --about-gutter: var(--edge);
  background: var(--sand);
  color: var(--ink);
}

/* ============ 首屏 ============ */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(120% 90% at 12% 0%, rgba(107, 45, 139, .95) 0%, rgba(67, 34, 92, .98) 46%, var(--ink) 100%);
  color: var(--sand);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(127, 181, 181, .14) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(127, 181, 181, .14) 1px, transparent 1px);
  background-size: 96px 96px, 96px 96px;
}

.page-about .about-hero__inner {
  position: relative;
  padding-top: 28px;
  padding-bottom: 44px;
}

.page-about .about-hero__crumb ol {
  margin: 0 0 26px;
  padding: 0;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
}

.page-about .about-hero__crumb li {
  color: rgba(247, 243, 236, .68);
}

.page-about .about-hero__crumb li + li::before {
  content: "/";
  margin-right: 8px;
  color: rgba(240, 199, 94, .6);
}

.page-about .about-hero__crumb a {
  color: var(--gold-lt);
  text-decoration: none;
  border-bottom: 1px solid rgba(240, 199, 94, .4);
}

.page-about .about-hero__crumb a:hover,
.page-about .about-hero__crumb a:focus-visible {
  border-bottom-color: var(--gold-lt);
}

.page-about .about-hero__coord {
  margin: 0 0 18px;
  font-size: 12px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--gold);
}

.page-about .about-hero h1 {
  margin: 0 0 22px;
  max-width: 20ch;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(30px, 5.4vw, 56px);
  line-height: 1.18;
  letter-spacing: .01em;
  color: var(--paper);
}

.page-about .about-hero__lead {
  margin: 0 0 30px;
  max-width: 46ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.8;
  color: rgba(247, 243, 236, .84);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 40px;
}

.page-about .about-stat {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 0;
  padding: 1px 0 0;
  background: rgba(212, 160, 23, .35);
  border-top: 1px solid rgba(212, 160, 23, .55);
}

.page-about .about-stat__item {
  padding: 16px 14px 18px;
  background: rgba(27, 23, 38, .72);
}

.page-about .about-stat dt {
  margin: 0 0 6px;
  font-size: 12px;
  letter-spacing: .08em;
  color: rgba(127, 181, 181, .95);
}

.page-about .about-stat dd {
  margin: 0;
  font-size: 14px;
  color: rgba(247, 243, 236, .8);
}

.page-about .about-stat__num {
  font-size: 24px;
  font-weight: 500;
  color: var(--gold-lt);
  margin-right: 4px;
}

.page-about .about-hero__figure {
  position: relative;
  margin: 0;
  border-top: 1px solid rgba(212, 160, 23, .5);
}

.page-about .about-hero__figure img {
  display: block;
  width: 100%;
  height: clamp(200px, 34vw, 420px);
  object-fit: cover;
  filter: saturate(.95) contrast(1.05);
}

.page-about .about-hero__figure::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 62px;
  background: var(--sand);
  clip-path: polygon(0 68%, 100% 0, 100% 100%, 0 100%);
}

.page-about .about-hero__figcap {
  position: absolute;
  left: var(--about-gutter);
  bottom: 72px;
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--gold-lt);
  text-shadow: 0 1px 6px rgba(27, 23, 38, .8);
}

/* ============ 版本时间线 ============ */
.page-about .about-line {
  padding-top: 16px;
  border-top: 0;
}

.page-about .about-line .section__head {
  align-items: flex-start;
  gap: 12px;
}

.page-about .about-line h2 {
  max-width: 26ch;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(24px, 3.4vw, 40px);
  line-height: 1.28;
}

.page-about .about-line__intro {
  max-width: 62ch;
  margin: 14px 0 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--gray);
}

.page-about .about-line__figure {
  margin: 30px 0 0;
  overflow: hidden;
  border-top: 1px solid var(--line-gold);
  border-bottom: 1px solid var(--line-gold);
}

.page-about .about-line__figimg {
  display: block;
  width: 100%;
  height: clamp(110px, 16vw, 200px);
  object-fit: cover;
  opacity: .5;
}

.page-about .about-line__rail {
  display: flex;
  align-items: stretch;
  gap: 0;
  overflow-x: auto;
  overscroll-behavior-x: contain;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  padding: 0 var(--about-gutter) 26px;
  background-image: repeating-linear-gradient(to right, rgba(127, 181, 181, .22) 0 1px, transparent 1px 96px);
  border-bottom: 1px solid var(--line);
}

.page-about .about-node {
  position: relative;
  flex: 0 0 84%;
  max-width: 430px;
  scroll-snap-align: start;
  padding: 30px 26px 30px 24px;
  border-left: 1px solid var(--line);
}

.page-about .about-node::before {
  content: "";
  position: absolute;
  left: -5px;
  top: 36px;
  width: 9px;
  height: 9px;
  background: var(--gold);
}

.page-about .about-node__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding-bottom: 12px;
  margin-bottom: 16px;
  border-bottom: 1px solid var(--line-soft);
}

.page-about .about-node__year {
  font-size: 22px;
  color: var(--grape);
  letter-spacing: .04em;
}

.page-about .about-node__ver {
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--ink);
  background: var(--gold-lt);
  padding: 3px 8px;
}

.page-about .about-node h3 {
  margin: 0 0 12px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 19px;
  line-height: 1.45;
  color: var(--ink);
}

.page-about .about-node p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--gray);
}

/* ============ 团队分工 ============ */
.page-about .about-crew-sec {
  background: var(--celadon-lt);
  border-top-color: var(--celadon);
}

.page-about .about-crew-sec h2 {
  max-width: 24ch;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(24px, 3.4vw, 40px);
  line-height: 1.28;
}

.page-about .about-crew-sec__intro {
  max-width: 62ch;
  margin: 14px 0 34px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--gray);
}

.page-about .about-crew {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-about .about-crew__hub {
  position: relative;
  order: -1;
  background: var(--grape);
  color: var(--sand);
  padding: 30px 24px 32px;
  border: 1px solid var(--gold);
}

.page-about .about-crew__hub::after {
  content: "";
  position: absolute;
  inset: 10px;
  border: 1px solid rgba(240, 199, 94, .32);
  pointer-events: none;
}

.page-about .about-crew__hub-num {
  display: block;
  font-size: 46px;
  line-height: 1;
  color: var(--gold-lt);
  margin-bottom: 10px;
}

.page-about .about-crew__hub-label {
  display: block;
  font-size: 15px;
  letter-spacing: .06em;
  margin-bottom: 12px;
}

.page-about .about-crew__hub p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(247, 243, 236, .78);
}

.page-about .about-crew__cell {
  position: relative;
  background: var(--paper);
  border: 1px solid var(--line);
  padding: 22px 20px 24px;
}

.page-about .about-crew__cell::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 34px;
  height: 2px;
  background: var(--gold);
}

.page-about .about-crew__cell h3 {
  margin: 0 0 10px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 17px;
  color: var(--grape-deep);
}

.page-about .about-crew__cell p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--gray);
}

/* ============ 本地化服务 ============ */
.page-about .about-local h2 {
  max-width: 24ch;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(24px, 3.4vw, 40px);
  line-height: 1.28;
}

.page-about .about-local__grid {
  margin-top: 26px;
}

.page-about .about-local__text p {
  margin: 0 0 18px;
  font-size: 16px;
  line-height: 1.85;
  color: var(--gray);
}

.page-about .about-local__list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line-soft);
}

.page-about .about-local__list li {
  padding: 16px 0 16px 18px;
  border-bottom: 1px solid var(--line-soft);
  font-size: 15px;
  line-height: 1.8;
  color: var(--gray);
  position: relative;
}

.page-about .about-local__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 25px;
  width: 7px;
  height: 7px;
  background: var(--red);
}

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

.page-about .about-local__fig {
  margin: 26px 0 0;
}

.page-about .about-local__fig img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--line);
}

.page-about .about-local__fig figcaption {
  margin-top: 10px;
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--gray);
}

.page-about .about-map {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 40px 0 0;
  padding: 1px;
  list-style: none;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
}

.page-about .about-map__cell {
  background: var(--paper);
  padding: 16px 14px 18px;
  transition: background-color .24s var(--ease);
}

.page-about .about-map__cell:hover {
  background: var(--celadon-lt);
}

.page-about .about-map__dot {
  display: block;
  width: 9px;
  height: 9px;
  margin-bottom: 12px;
  background: var(--celadon);
  transition: background-color .24s var(--ease);
}

.page-about .about-map__cell:hover .about-map__dot {
  background: var(--red);
}

.page-about .about-map__city {
  display: block;
  font-size: 16px;
  font-weight: 500;
  color: var(--ink);
  margin-bottom: 6px;
}

.page-about .about-map__peak {
  display: block;
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--gray);
}

.page-about .about-local__note {
  margin: 16px 0 0;
  font-size: 13px;
  color: var(--gray);
}

/* ============ 长期方向 ============ */
.page-about .about-pledge {
  background: var(--grape-night);
  color: var(--sand);
  border-top-color: var(--gold);
}

.page-about .about-pledge .section__head {
  border-bottom: 0;
}

.page-about .about-pledge h2 {
  max-width: 24ch;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(24px, 3.4vw, 40px);
  line-height: 1.28;
  color: var(--paper);
}

.page-about .about-pledge .section__index {
  color: var(--gold);
}

.page-about .about-pledge__intro {
  max-width: 62ch;
  margin: 14px 0 34px;
  font-size: 16px;
  line-height: 1.85;
  color: rgba(247, 243, 236, .78);
}

.page-about .about-pledge__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.page-about .about-pledge__item {
  position: relative;
  padding: 26px 22px 28px;
  border: 1px solid rgba(212, 160, 23, .45);
  background: rgba(107, 45, 139, .22);
}

.page-about .about-pledge__idx {
  display: inline-block;
  margin-bottom: 14px;
  padding: 3px 9px;
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--ink);
  background: var(--gold);
}

.page-about .about-pledge__item h3 {
  margin: 0 0 12px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 20px;
  color: var(--gold-lt);
}

.page-about .about-pledge__item p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(247, 243, 236, .8);
}

/* ============ 收尾入口 ============ */
.page-about .about-cta {
  background: linear-gradient(100deg, var(--gold) 0%, var(--gold-lt) 58%, #f6dd9a 100%);
  color: var(--ink);
}

.page-about .about-cta__inner {
  padding-top: 42px;
  padding-bottom: 46px;
}

.page-about .about-cta__text h2 {
  margin: 0 0 12px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(22px, 3vw, 34px);
  line-height: 1.3;
  color: var(--grape-deep);
}

.page-about .about-cta__text p {
  margin: 0 0 26px;
  max-width: 54ch;
  font-size: 16px;
  line-height: 1.8;
  color: #4a3a12;
}

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

/* ============ 响应式 ============ */
@media (min-width: 600px) {
  .page-about .about-stat {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

  .page-about .about-node {
    flex: 0 0 62%;
  }

  .page-about .about-cta__inner {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 32px;
  }

  .page-about .about-cta__text {
    max-width: 60%;
  }

  .page-about .about-cta__text p {
    margin-bottom: 0;
  }

  .page-about .about-cta__actions {
    flex: 0 0 auto;
    padding-bottom: 4px;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__inner {
    padding-top: 40px;
    padding-bottom: 56px;
  }

  .page-about .about-hero h1 {
    max-width: 22ch;
  }

  .page-about .about-hero__figcap {
    bottom: 74px;
  }

  .page-about .about-node {
    flex: 0 0 340px;
  }

  .page-about .about-crew {
    grid-template-columns: 1fr 1fr 1fr;
    grid-template-areas:
      "a hub b"
      "c hub d";
    gap: 16px;
    align-items: stretch;
  }

  .page-about .about-crew__hub {
    grid-area: hub;
    order: 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
  }

  .page-about .about-crew__cell--a { grid-area: a; }
  .page-about .about-crew__cell--b { grid-area: b; }
  .page-about .about-crew__cell--c { grid-area: c; }
  .page-about .about-crew__cell--d { grid-area: d; }

  .page-about .about-local__text {
    padding-right: 24px;
  }

  .page-about .about-local__fig {
    margin-top: 0;
    align-self: start;
  }

  .page-about .about-map {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }

  .page-about .about-pledge__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 22px;
  }
}

@media (min-width: 1100px) {
  .page-about .about-node {
    flex: 0 0 360px;
  }

  .page-about .about-line__rail {
    scroll-padding-left: var(--about-gutter);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-map__cell,
  .page-about .about-map__dot {
    transition: none;
  }
}
<<<END>>>