.page-about .section {
  padding-block: clamp(56px, 9vw, 118px);
}

.page-about .sec-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 10px 18px;
  align-items: start;
  margin: 0 0 clamp(26px, 4.5vw, 52px);
  padding-top: 16px;
  border-top: 1px solid var(--line-strong);
}

.page-about .sec-head .sec-num {
  margin: 0;
  padding-top: 6px;
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--gold);
}

.page-about .sec-title {
  margin: 0 0 10px;
  font-size: clamp(24px, 3.6vw, 38px);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--limestone);
}

.page-about .sec-intro {
  max-width: 40ch;
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist);
}

/* ---------- 首屏 ---------- */
.page-about .story-hero {
  padding-top: clamp(28px, 6vw, 64px);
  padding-bottom: clamp(44px, 7vw, 96px);
}

.page-about .story-hero .wrap {
  position: relative;
}

.page-about .story-hero .crumb {
  margin-bottom: clamp(18px, 3vw, 32px);
}

.page-about .story-hero__frame {
  padding: clamp(22px, 4vw, 54px);
}

.page-about .story-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 52px);
}

.page-about .story-hero__eyebrow {
  margin: 0 0 clamp(14px, 2vw, 24px);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--gold);
}

.page-about .story-hero__title {
  margin: 0 0 clamp(16px, 2.4vw, 26px);
  font-size: clamp(32px, 6.6vw, 78px);
  font-weight: 800;
  line-height: 1.02;
  letter-spacing: -0.02em;
  color: var(--limestone);
}

.page-about .story-hero__lede {
  max-width: 36ch;
  margin: 0;
  color: var(--limestone);
}

.page-about .story-hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(24px, 3.4vw, 36px);
}

.page-about .hero-facts {
  margin: 0;
  border-top: 1px solid var(--line-strong);
}

.page-about .hero-facts > div {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 18px;
  padding: 13px 0;
  border-bottom: 1px solid var(--line);
}

.page-about .hero-facts dt {
  font-size: 13px;
  color: var(--mist);
}

.page-about .hero-facts dd {
  margin: 0;
  font-family: var(--mono);
  font-size: 14px;
  color: var(--gold);
  text-align: right;
}

.page-about .story-hero__note {
  display: none;
}

/* ---------- 01 起点 ---------- */
.page-about .origin__stamp {
  margin: 0 0 12px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--gold);
}

.page-about .origin__aside {
  align-self: start;
}

.page-about .origin__aside .muted {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
}

.page-about .origin__body p {
  max-width: 38ch;
  margin: 0 0 1.1em;
  font-size: clamp(15px, 1.8vw, 17px);
  line-height: 1.85;
  color: var(--limestone);
}

.page-about .origin__body p:last-child {
  margin-bottom: 0;
}

.page-about .origin__grid {
  margin-bottom: 0;
}

.page-about .origin__media {
  margin: clamp(32px, 5vw, 64px) 0 0;
}

/* ---------- 02 时间轴 ---------- */
.page-about .track__bg {
  margin: clamp(34px, 5vw, 66px) 0 0;
}

.page-about .timeline__track {
  display: flex;
  gap: 14px;
  padding: 4px 0 20px;
  overflow-x: auto;
  scroll-snap-type: x proximity;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.page-about .timeline__node {
  flex: 0 0 84%;
  scroll-snap-align: start;
  padding: clamp(18px, 3vw, 26px);
  background: var(--abyss);
  border: 1px solid var(--line);
  border-top: 2px solid var(--gold-line);
  transition: border-color 0.24s var(--ease), transform 0.24s var(--ease);
}

.page-about .timeline__node:focus {
  outline: 1px solid var(--gold);
  outline-offset: 2px;
}

.page-about .timeline__year {
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--gold);
}

.page-about .timeline__title {
  margin: 0 0 10px;
  font-size: clamp(17px, 2.2vw, 21px);
  font-weight: 700;
  line-height: 1.3;
  color: var(--limestone);
}

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

.page-about .timeline__more {
  font-size: 14px;
  line-height: 1.8;
  color: var(--light-teal);
  margin: 14px 0 0;
  max-height: none;
  opacity: 1;
}

.page-about .timeline__hint {
  margin: 6px 0 0;
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--mist);
}

/* ---------- 03 团队 ---------- */
.page-about .team__lede {
  max-width: 34ch;
  margin: 0;
  color: var(--limestone);
}

.page-about .team__list {
  margin: clamp(26px, 4vw, 42px) 0 0;
}

.page-about .team__row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 6px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.page-about .team__role {
  margin: 0;
  font-size: 16px;
  font-weight: 700;
  color: var(--limestone);
}

.page-about .team__role span {
  margin-right: 10px;
  font-family: var(--mono);
  font-weight: 500;
  color: var(--gold);
}

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

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

.page-about .team-map {
  position: relative;
  padding: clamp(16px, 3vw, 34px);
  border: 1px solid var(--line-strong);
}

.page-about .team-map::before {
  content: "";
  position: absolute;
  inset: clamp(8px, 1.6vw, 17px);
  border: 1px solid var(--line);
  pointer-events: none;
}

.page-about .team-map__img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  max-width: 100%;
}

.page-about .team-map__cap {
  position: absolute;
  left: 0;
  bottom: 0;
  padding: 6px 10px;
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--gold);
  background: var(--abyss);
}

/* ---------- 04 做事方式 ---------- */
.page-about .cadence {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .cadence li {
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.page-about .cadence li:first-child {
  border-top: 1px solid var(--line);
}

.page-about .cadence strong {
  display: block;
  margin-bottom: 6px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--gold);
}

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

.page-about .steps {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .steps li {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 18px;
  padding: 20px 0;
  border-top: 1px solid var(--line);
}

.page-about .steps li:last-child {
  border-bottom: 1px solid var(--line);
}

.page-about .steps__num {
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--vermilion);
}

.page-about .steps h3 {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 700;
  color: var(--limestone);
}

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

/* ---------- 引用带 ---------- */
.page-about .pull {
  background: var(--wine);
  padding-block: clamp(54px, 9vw, 118px);
  border-top: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line-strong);
}

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

.page-about .pull__text {
  max-width: 20ch;
  margin: 0;
  font-size: clamp(22px, 3.6vw, 34px);
  font-weight: 700;
  line-height: 1.32;
  color: var(--limestone);
}

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

/* ---------- 05 伙伴 ---------- */
.page-about .network__stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(118px, 1fr));
  margin: 0 0 clamp(28px, 5vw, 52px);
  border: 1px solid var(--line-strong);
}

.page-about .network__stat {
  padding: clamp(16px, 2.6vw, 26px) clamp(14px, 2vw, 22px);
  border-right: 1px solid var(--line);
}

.page-about .network__stat:last-child {
  border-right: 0;
}

.page-about .network__stat b {
  display: block;
  font-family: var(--mono);
  font-size: clamp(26px, 4vw, 42px);
  font-weight: 500;
  line-height: 1;
  color: var(--gold);
}

.page-about .network__stat span {
  display: block;
  margin-top: 10px;
  font-size: 13px;
  color: var(--mist);
}

.page-about .network__lead {
  max-width: 34ch;
  margin: 0;
  font-size: clamp(15px, 1.8vw, 17px);
  line-height: 1.85;
  color: var(--limestone);
}

.page-about .network__ways {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .network__ways li {
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.page-about .network__ways li:first-child {
  border-top: 1px solid var(--line);
}

.page-about .network__ways strong {
  display: block;
  margin-bottom: 6px;
  font-size: 16px;
  color: var(--limestone);
}

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

/* ---------- 06 荣誉 ---------- */
.page-about .honor__list {
  list-style: none;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin: 0;
  padding: 0;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .honor__item {
  padding: clamp(22px, 3.4vw, 38px);
  background: var(--abyss);
}

.page-about .honor__meta {
  margin: 0 0 14px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--gold);
}

.page-about .honor__item h3 {
  margin: 0 0 10px;
  font-size: clamp(17px, 2.2vw, 19px);
  font-weight: 700;
  line-height: 1.4;
  color: var(--limestone);
}

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

/* ---------- 07 去处 ---------- */
.page-about .next__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

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

.page-about .next__list li:first-child {
  border-top: 1px solid var(--line);
}

.page-about .next__link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 20px 0;
  text-decoration: none;
  color: var(--limestone);
  transition: color 0.18s var(--ease);
}

.page-about .next__label {
  display: block;
  font-size: clamp(16px, 2.4vw, 21px);
  font-weight: 700;
}

.page-about .next__desc {
  display: block;
  margin-top: 6px;
  font-size: 14px;
  color: var(--mist);
}

.page-about .next__arrow {
  flex: none;
  font-size: 15px;
  color: var(--vermilion);
  transition: transform 0.18s var(--ease);
}

.page-about .next__link:hover,
.page-about .next__link:focus-visible {
  color: var(--light-teal);
}

.page-about .next__link:hover .next__arrow,
.page-about .next__link:focus-visible .next__arrow {
  transform: translateX(4px);
}

/* ---------- 断点 ---------- */
@media (min-width: 640px) {
  .page-about .team__row {
    grid-template-columns: minmax(0, 190px) minmax(0, 1fr);
    gap: 20px;
    align-items: baseline;
  }
}

@media (min-width: 860px) {
  .page-about .honor__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-about .story-hero__grid {
    grid-template-columns: minmax(0, 1.65fr) minmax(0, 1fr);
    align-items: end;
  }

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

  .page-about .pull__note {
    justify-self: end;
    writing-mode: vertical-rl;
    letter-spacing: 0.22em;
    font-size: 11px;
    color: var(--limestone);
    opacity: 0.72;
  }

  .page-about .timeline__node {
    flex: 0 0 330px;
  }
}

@media (min-width: 1100px) {
  .page-about .story-hero__note {
    display: block;
    position: absolute;
    right: -4px;
    top: 132px;
    writing-mode: vertical-rl;
    letter-spacing: 0.22em;
    font-size: 11px;
    color: var(--mist);
  }
}

@media (hover: hover) and (min-width: 900px) {
  .page-about .timeline__more {
    max-height: 0;
    margin-top: 0;
    opacity: 0;
    overflow: hidden;
    transition: max-height 0.26s var(--ease), opacity 0.26s var(--ease), margin-top 0.26s var(--ease);
  }

  .page-about .timeline__node:hover .timeline__more,
  .page-about .timeline__node:focus .timeline__more,
  .page-about .timeline__node:focus-within .timeline__more {
    max-height: 9em;
    margin-top: 14px;
    opacity: 1;
  }

  .page-about .timeline__node:hover {
    border-color: rgba(200, 56, 44, 0.6);
    transform: translateY(-2px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .timeline__more,
  .page-about .next__arrow,
  .page-about .timeline__node,
  .page-about .next__link {
    transition: none;
  }

  .page-about .timeline__node:hover {
    transform: none;
  }
}