.page-about {
  --about-body: rgba(242, 237, 227, .82);
  --about-soft: rgba(242, 237, 227, .6);
  padding-top: clamp(20px, 4vw, 40px);
  overflow-x: hidden;
}

.page-about .about-crumb-wrap {
  margin-bottom: clamp(24px, 4vw, 44px);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero__grid {
  display: grid;
  gap: clamp(20px, 3vw, 32px);
}

.page-about .about-hero__title .eyebrow {
  margin: 0 0 14px;
}

.page-about .about-hero__h1 {
  display: flex;
  flex-wrap: wrap;
  gap: .32em;
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(36px, 9vw, 54px);
  line-height: 1.14;
  letter-spacing: .05em;
  color: var(--paper);
}

.page-about .about-hero__h1 span {
  display: inline-block;
}

.page-about .about-hero__h1 span:first-child {
  color: var(--gold);
}

.page-about .about-hero__lead {
  position: relative;
  padding-top: 4px;
}

.page-about .about-hero__note {
  display: inline-block;
  margin-bottom: 16px;
  padding: 4px 10px;
  font-family: var(--font-body);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--celadon);
  border: 1px solid rgba(111, 167, 155, .38);
  transform: rotate(-6deg);
  transform-origin: left bottom;
}

.page-about .about-hero__text {
  margin: 0 0 14px;
  max-width: 34em;
  font-size: clamp(15px, 1.05vw, 17px);
  line-height: 1.85;
  color: var(--about-body);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

.page-about .about-hero__media {
  position: relative;
  margin: clamp(28px, 5vw, 52px) 0 0;
  padding: 8px;
  border: var(--line);
  background: linear-gradient(158deg, rgba(232, 195, 106, .1), transparent 62%);
  box-shadow: var(--shadow-paper);
}

.page-about .about-hero__media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 主体骨架 ---------- */
.page-about .about-shell {
  display: grid;
  gap: clamp(28px, 4vw, 44px);
  padding-top: clamp(44px, 6vw, 84px);
}

.page-about .about-flow {
  min-width: 0;
}

.page-about .about-toc {
  order: -1;
  min-width: 0;
  border-top: var(--line);
  padding-top: 16px;
}

.page-about .about-toc__title {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--mist);
}

.page-about .about-toc__list {
  display: flex;
  gap: 8px;
  margin: 12px 0 0;
  padding: 0 0 6px;
  list-style: none;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-about .about-toc__link {
  display: block;
  white-space: nowrap;
  padding: 6px 12px;
  font-size: 13px;
  color: var(--mist);
  text-decoration: none;
  border: var(--line-soft);
  border-radius: 999px;
  transition: color .24s var(--ease), border-color .24s var(--ease);
}

.page-about .about-toc__link:hover,
.page-about .about-toc__link:focus-visible {
  color: var(--gold);
  border-color: rgba(232, 195, 106, .5);
}

/* ---------- 章节 ---------- */
.page-about .about-sec {
  padding: clamp(32px, 5vw, 58px) 0;
  border-top: var(--line);
  scroll-margin-top: calc(var(--header-h) + 20px);
}

.page-about .about-sec:first-child {
  padding-top: 0;
  border-top: 0;
}

.page-about .about-sec__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: clamp(16px, 2.6vw, 26px);
}

.page-about .about-sec__num {
  flex: none;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .12em;
  color: var(--celadon);
}

.page-about .about-sec__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(25px, 4vw, 40px);
  line-height: 1.22;
  letter-spacing: .02em;
  color: var(--gold);
}

.page-about .about-sec__body p {
  margin: 0 0 14px;
  max-width: 34em;
  font-size: clamp(15px, 1.05vw, 17px);
  line-height: 1.85;
  color: var(--about-body);
}

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

/* ---------- 四条规矩 ---------- */
.page-about .about-principles {
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 0;
  list-style: none;
  border-top: var(--line-soft);
}

.page-about .about-principle {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  padding: 20px 12px 20px 0;
  border-bottom: var(--line-soft);
  transition: background .24s var(--ease);
}

.page-about .about-principle:hover {
  background: rgba(232, 195, 106, .045);
}

.page-about .about-principle__num {
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.6;
  color: var(--mist);
  transition: color .24s var(--ease);
}

.page-about .about-principle:hover .about-principle__num,
.page-about .about-principle:focus-within .about-principle__num {
  color: var(--gold);
}

.page-about .about-principle__title {
  margin: 0 0 7px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(18px, 2vw, 23px);
  line-height: 1.4;
  color: var(--paper);
}

.page-about .about-principle__text {
  margin: 0 0 7px;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--about-body);
}

.page-about .about-principle__extra {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--celadon);
  opacity: .74;
  transition: opacity .24s var(--ease);
}

.page-about .about-principle:hover .about-principle__extra,
.page-about .about-principle:focus-within .about-principle__extra {
  opacity: 1;
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  display: grid;
  gap: clamp(22px, 3vw, 36px);
  margin-top: clamp(20px, 3vw, 30px);
}

.page-about .about-roles {
  display: grid;
  gap: 2px;
  margin: 0;
  padding: 0;
  list-style: none;
  min-width: 0;
}

.page-about .about-role {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  padding: 16px;
  background: var(--ink-800);
  border-left: 2px solid var(--celadon);
}

.page-about .about-role:nth-child(even) {
  border-left-color: var(--gold);
}

.page-about .about-role__k {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--mist);
  padding-top: 3px;
}

.page-about .about-role__t {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 17px;
  line-height: 1.4;
  color: var(--paper);
}

.page-about .about-role__d {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--about-soft);
}

.page-about .about-figure {
  position: relative;
  margin: 0;
  padding: 7px;
  border: var(--line);
  background: var(--ink-800);
  box-shadow: var(--shadow-paper);
  min-width: 0;
}

.page-about .about-figure img,
.page-about .about-rhythm__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

.page-about .about-team__note {
  margin: 22px 0 0;
  padding-left: 16px;
  border-left: 2px solid var(--celadon-deep);
  max-width: 32em;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--about-soft);
}

/* ---------- 版本纪事带 ---------- */
.page-about .about-track {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 2px 2px 20px;
  list-style: none;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-behavior: smooth;
  -webkit-overflow-scrolling: touch;
}

.page-about .about-track__card {
  flex: 0 0 min(300px, 82vw);
  scroll-snap-align: start;
  display: flex;
  flex-direction: column;
  gap: 9px;
  padding: 20px 18px;
  background: var(--ink-800);
  border: var(--line);
  box-shadow: var(--shadow-paper);
  min-width: 0;
}

.page-about .about-track__card:nth-child(2) {
  margin-top: 10px;
}

.page-about .about-track__card:nth-child(3) {
  margin-top: 20px;
}

.page-about .about-track__card:nth-child(4) {
  margin-top: 12px;
}

.page-about .about-track__card .tag {
  align-self: flex-start;
}

.page-about .about-track__batch {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--mist);
}

.page-about .about-track__card h3 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 19px;
  line-height: 1.42;
  color: var(--gold-soft);
}

.page-about .about-track__card p:last-child {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--about-soft);
}

.page-about .about-rhythm__figure {
  position: relative;
  margin: clamp(22px, 3vw, 32px) 0 0;
  padding: 7px;
  border: var(--line-soft);
  background: linear-gradient(180deg, rgba(18, 42, 69, .9), rgba(11, 26, 46, .5));
}

/* ---------- 合作生态 ---------- */
.page-about .about-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin: clamp(22px, 3vw, 32px) 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-stat {
  padding: 16px 14px 14px;
  border: var(--line-soft);
  background: linear-gradient(155deg, rgba(18, 42, 69, .92), rgba(11, 26, 46, .92));
  min-width: 0;
}

.page-about .about-stat__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(25px, 3.2vw, 34px);
  line-height: 1;
  letter-spacing: -.01em;
  color: var(--gold);
}

.page-about .about-stat__unit {
  font-size: .46em;
  letter-spacing: .06em;
  color: var(--gold-soft);
  margin-left: 3px;
}

.page-about .about-stat__label {
  display: block;
  margin-top: 9px;
  font-size: 13px;
  line-height: 1.62;
  color: var(--mist);
}

/* ---------- 去向 ---------- */
.page-about .about-next {
  padding-bottom: clamp(28px, 4vw, 48px);
}

.page-about .about-doors {
  display: grid;
  gap: 10px;
  margin: clamp(20px, 3vw, 28px) 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-door {
  display: block;
  height: 100%;
  padding: 18px 18px 16px;
  text-decoration: none;
  background: var(--ink-800);
  border: 1px solid rgba(232, 195, 106, .16);
  transition: border-color .24s var(--ease), background .24s var(--ease);
}

.page-about .about-door:hover,
.page-about .about-door:focus-visible {
  border-color: var(--gold);
  background: var(--ink-700);
}

.page-about .about-door__k {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--celadon);
}

.page-about .about-door__t {
  display: block;
  margin-top: 7px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 18px;
  line-height: 1.4;
  color: var(--paper);
}

.page-about .about-door__d {
  display: block;
  margin-top: 6px;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- 页尾静区 ---------- */
.page-about .about-sign {
  display: grid;
  gap: 26px;
  align-items: center;
  margin-top: clamp(40px, 6vw, 76px);
  padding: clamp(36px, 5vw, 64px) 0 clamp(52px, 8vw, 96px);
  border-top: var(--line);
}

.page-about .about-sign__name {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(21px, 2.6vw, 29px);
  line-height: 1.35;
  color: var(--paper);
}

.page-about .about-sign__note {
  margin: 0;
  max-width: 32em;
  font-size: 14px;
  line-height: 1.85;
  color: var(--mist);
}

.page-about .about-seal {
  width: 82px;
  height: 82px;
  display: grid;
  place-items: center;
  border: 2px solid var(--cinnabar);
  background: rgba(179, 58, 43, .1);
  color: var(--cinnabar);
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 20px;
  letter-spacing: .16em;
  line-height: 1.1;
  text-align: center;
  transform: rotate(-4deg);
  justify-self: start;
}

/* ---------- 桌面 ---------- */
@media (min-width: 640px) {
  .page-about .about-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 760px) {
  .page-about .about-doors {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

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

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(180px, 236px) minmax(0, 1fr);
    gap: clamp(36px, 6vw, 96px);
    align-items: start;
  }

  .page-about .about-hero__h1 {
    display: block;
    writing-mode: vertical-rl;
    font-size: clamp(40px, 4.4vw, 64px);
    line-height: 1.04;
    letter-spacing: .14em;
  }

  .page-about .about-hero__h1 span {
    display: block;
  }

  .page-about .about-hero__lead {
    padding-left: clamp(8px, 1.6vw, 22px);
    border-left: var(--line-soft);
  }

  .page-about .about-team {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
    align-items: start;
    gap: clamp(28px, 4vw, 52px);
  }
}

@media (min-width: 1024px) {
  .page-about .about-shell {
    grid-template-columns: minmax(0, 1fr) 214px;
    gap: clamp(40px, 5vw, 72px);
    align-items: start;
  }

  .page-about .about-toc {
    order: 0;
    position: sticky;
    top: calc(var(--header-h) + 28px);
    border-top: 0;
    border-left: var(--line);
    padding: 2px 0 0 20px;
  }

  .page-about .about-toc__list {
    display: block;
    overflow: visible;
    padding: 0;
    margin-top: 14px;
  }

  .page-about .about-toc__list li + li {
    margin-top: 2px;
  }

  .page-about .about-toc__link {
    border: 0;
    border-radius: 0;
    padding: 7px 0;
    white-space: normal;
    line-height: 1.5;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-track__card:nth-child(2),
  .page-about .about-track__card:nth-child(3),
  .page-about .about-track__card:nth-child(4) {
    margin-top: 0;
  }

  .page-about .about-hero__note,
  .page-about .about-seal {
    transform: none;
  }

  .page-about .about-track {
    scroll-behavior: auto;
  }
}
<<<END>>>