.page-about {
  --about-rail: 208px;
  --about-gap: clamp(22px, 3.4vw, 52px);
  background: var(--ink);
  color: var(--paper);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: clamp(18px, 3vw, 30px) 0 clamp(38px, 6vw, 76px);
  border-bottom: 1px solid var(--line);
}

.page-about .about-hero__bg {
  position: absolute;
  inset: 0;
  z-index: -2;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .32;
  filter: saturate(.72);
}

.page-about .about-hero__scrim {
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(90% 70% at 10% 6%, rgba(28, 58, 49, .62), rgba(10, 29, 23, .12) 62%),
    linear-gradient(180deg, rgba(10, 29, 23, .86) 0%, rgba(14, 42, 34, .78) 52%, var(--ink) 100%);
}

.page-about .about-hero__inner {
  position: relative;
}

.page-about .about-hero .crumbs-link {
  color: var(--gray);
}

.page-about .about-hero .crumbs-link:hover {
  color: var(--gold-soft);
}

.page-about .about-hero .crumbs-sep {
  color: rgba(244, 245, 242, .28);
}

.page-about .about-hero .crumbs-now {
  color: var(--gold-soft);
}

.page-about .about-hero__grid {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
  margin-top: clamp(22px, 4vw, 46px);
}

.page-about .about-hero__title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: -.035em;
  font-size: clamp(29px, 6vw, 62px);
  line-height: 1.08;
}

.page-about .about-hero__title-line {
  display: block;
}

.page-about .about-hero__title-line--gold {
  color: var(--gold);
}

.page-about .about-hero__lede {
  max-width: 54ch;
  margin: clamp(16px, 2.4vw, 26px) 0 0;
  font-size: clamp(14.5px, 1.5vw, 17px);
  line-height: 1.82;
  color: rgba(244, 245, 242, .84);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: clamp(20px, 2.8vw, 30px);
}

/* 主站速览展签 */
.page-about .about-plate {
  position: relative;
  padding: 20px 20px 24px;
  background: linear-gradient(158deg, rgba(28, 58, 49, .94), rgba(10, 29, 23, .9));
  border: 1px solid var(--line-strong);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 22px), calc(100% - 22px) 100%, 0 100%);
}

.page-about .about-plate::before {
  content: "";
  position: absolute;
  top: 0;
  left: 20px;
  width: 44px;
  height: 2px;
  background: var(--gold);
}

.page-about .about-crown {
  display: block;
  color: var(--gold);
  opacity: .92;
  margin-bottom: 12px;
}

.page-about .about-plate__kicker {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--gray);
}

.page-about .about-plate__list {
  display: grid;
  gap: 14px;
  margin: 0;
}

.page-about .about-plate__row {
  display: grid;
  gap: 3px;
}

.page-about .about-plate dt {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .16em;
  color: var(--gold);
}

.page-about .about-plate dd {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: rgba(244, 245, 242, .86);
}

/* ---------- 主体双栏 ---------- */
.page-about .about-shell {
  display: grid;
  gap: clamp(18px, 2.6vw, 36px);
  padding-top: clamp(30px, 5vw, 60px);
  padding-bottom: clamp(46px, 7vw, 90px);
}

.page-about .about-rail {
  align-self: start;
  border-left: 1px solid var(--line);
  padding-left: 12px;
}

.page-about .about-rail__kicker {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .2em;
  color: var(--gray);
}

.page-about .about-rail__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 6px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-about .about-rail__link {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 11px;
  font-size: 13px;
  line-height: 1.3;
  white-space: nowrap;
  text-decoration: none;
  color: rgba(244, 245, 242, .62);
  border: 1px solid var(--line-cool);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-about .about-rail__num {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .1em;
  color: var(--gold);
  opacity: .8;
}

.page-about .about-rail__link:hover,
.page-about .about-rail__link:focus-visible {
  color: var(--white);
  border-color: var(--line-strong);
  background: rgba(28, 58, 49, .7);
}

/* ---------- 章节 ---------- */
.page-about .about-chapter {
  padding-top: clamp(28px, 4.4vw, 54px);
}

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

.page-about .about-chapter + .about-chapter {
  margin-top: clamp(28px, 4.4vw, 54px);
  border-top: 1px solid var(--line-cool);
}

.page-about .about-ch__title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -.025em;
  font-size: clamp(22px, 3.2vw, 35px);
  line-height: 1.22;
}

.page-about .about-ch__lede {
  max-width: 68ch;
  margin: 14px 0 0;
  font-size: clamp(14px, 1.4vw, 15.5px);
  line-height: 1.82;
  color: rgba(244, 245, 242, .76);
}

/* ---------- 图片 ---------- */
.page-about .about-shot {
  position: relative;
  margin: clamp(20px, 3vw, 30px) 0 0;
  overflow: hidden;
  border: 1px solid var(--line-cool);
}

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

.page-about .about-shot::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0;
  width: 54px;
  height: 54px;
  border-right: 2px solid var(--gold);
  border-bottom: 2px solid var(--gold);
  opacity: .72;
  pointer-events: none;
}

.page-about .about-shot--wide img {
  aspect-ratio: 12 / 5;
}

.page-about .about-shot--tall img {
  aspect-ratio: 10 / 7;
}

/* ---------- 赛季刻度 ---------- */
.page-about .about-miles {
  margin: clamp(18px, 2.6vw, 28px) 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-mile {
  display: grid;
  grid-template-columns: 62px minmax(0, 1fr);
  gap: 14px;
  padding: clamp(14px, 2vw, 20px) 0;
  border-top: 1px solid var(--line-cool);
  transition: background var(--dur) var(--ease);
}

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

.page-about .about-mile__num {
  font-family: var(--font-mono);
  font-size: clamp(15px, 1.6vw, 18px);
  letter-spacing: -.02em;
  line-height: 1.4;
  color: rgba(201, 162, 39, .58);
  transition: color var(--dur) var(--ease);
}

.page-about .about-mile__title {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(15.5px, 1.7vw, 18px);
  letter-spacing: -.01em;
  color: var(--white);
}

.page-about .about-mile__body p {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: rgba(244, 245, 242, .74);
}

.page-about .about-mile:hover {
  background: linear-gradient(90deg, rgba(28, 58, 49, .6), transparent 82%);
}

.page-about .about-mile:hover .about-mile__num {
  color: var(--gold);
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  display: grid;
  gap: clamp(20px, 3vw, 34px);
  margin-top: clamp(20px, 3vw, 30px);
}

.page-about .about-team .about-shot {
  margin-top: 0;
}

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

.page-about .about-role {
  display: grid;
  gap: 4px;
  padding: 14px 0;
  border-top: 1px solid var(--line-cool);
}

.page-about .about-role h3 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 15.5px;
  letter-spacing: .01em;
  color: var(--gold-soft);
}

.page-about .about-role p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.78;
  color: rgba(244, 245, 242, .76);
}

.page-about .about-flow {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-top: 18px;
}

.page-about .about-flow__step {
  padding: 7px 14px 7px 12px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .1em;
  color: var(--gold-soft);
  border: 1px solid var(--line-strong);
  clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 50%, calc(100% - 10px) 100%, 0 100%);
}

.page-about .about-flow__sep {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--gray);
}

.page-about .about-flow__note {
  margin: 12px 0 0;
  font-size: 13px;
  line-height: 1.75;
  color: rgba(244, 245, 242, .58);
}

/* ---------- 更新节奏 ---------- */
.page-about .about-cadence {
  margin-top: clamp(18px, 2.6vw, 28px);
}

.page-about .about-cadence__row {
  display: grid;
  gap: 6px;
  padding: 16px 0;
  border-top: 1px solid var(--line-cool);
}

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

.page-about .about-cadence__key {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--gold);
}

.page-about .about-cadence__title {
  margin: 0 0 5px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(15px, 1.7vw, 17.5px);
  color: var(--white);
}

.page-about .about-cadence__row p {
  margin: 0;
  font-size: 13.8px;
  line-height: 1.78;
  color: rgba(244, 245, 242, .74);
}

.page-about .about-cadence__tail {
  max-width: 66ch;
  margin: clamp(18px, 2.6vw, 26px) 0 0;
  padding: 16px 18px;
  font-size: 13.8px;
  line-height: 1.8;
  color: rgba(244, 245, 242, .82);
  border-left: 2px solid var(--red);
  background: rgba(28, 58, 49, .48);
}

/* ---------- 记录墙 ---------- */
.page-about .about-wall-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: clamp(18px, 2.6vw, 26px);
}

.page-about .about-wall-tab {
  padding: 7px 13px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .1em;
  text-decoration: none;
  color: rgba(244, 245, 242, .7);
  border: 1px solid var(--line);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-about .about-wall-tab:hover,
.page-about .about-wall-tab:focus-visible {
  color: var(--ink-3);
  background: var(--gold);
  border-color: var(--gold);
}

.page-about .about-wall-group {
  margin-top: clamp(20px, 3vw, 30px);
  scroll-margin-top: 90px;
}

.page-about .about-wall-group__label {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--gray);
}

.page-about .about-wall-group__label::after {
  content: "";
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, var(--line-strong), transparent);
}

.page-about .about-wall {
  display: grid;
  gap: 12px;
}

.page-about .about-note {
  display: grid;
  gap: 8px;
  padding: 15px 17px 16px;
  background: rgba(28, 58, 49, .42);
  border-left: 2px solid var(--gold);
  transition: background var(--dur) var(--ease);
}

.page-about .about-note:hover {
  background: rgba(28, 58, 49, .74);
}

.page-about .about-note__meta {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .14em;
  color: var(--gray);
}

.page-about .about-note__place {
  color: var(--gold-soft);
}

.page-about .about-note p {
  margin: 0;
  font-size: 13.6px;
  line-height: 1.78;
  color: rgba(244, 245, 242, .84);
}

.page-about .about-note .about-note__time {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .12em;
  color: rgba(214, 69, 47, .92);
}

.page-about .about-wall__more {
  margin: 20px 0 0;
  font-size: 13.5px;
  line-height: 1.8;
  color: rgba(244, 245, 242, .7);
}

/* ---------- 覆盖与体量 ---------- */
.page-about .about-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin-top: clamp(20px, 3vw, 30px);
  background: var(--line-cool);
  border: 1px solid var(--line-cool);
}

.page-about .about-stat {
  display: grid;
  gap: 6px;
  padding: 18px 15px 20px;
  background: var(--ink);
}

.page-about .about-stat .stat__num {
  font-family: var(--font-mono);
  font-size: clamp(26px, 3.6vw, 40px);
  letter-spacing: -.04em;
  line-height: 1;
  color: var(--gold);
}

.page-about .about-stat__plus {
  font-size: .6em;
  color: var(--gold-soft);
}

.page-about .about-stat .stat__label {
  font-size: 12.5px;
  line-height: 1.6;
  color: rgba(244, 245, 242, .68);
}

/* ---------- 合作生态 ---------- */
.page-about .about-partners {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: clamp(20px, 3vw, 28px) 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-partner {
  display: grid;
  gap: 3px;
  padding: 10px 15px 11px;
  border: 1px solid var(--line);
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-about .about-partner:hover {
  border-color: var(--gold);
  background: rgba(201, 162, 39, .08);
}

.page-about .about-partner__name {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--paper);
}

.page-about .about-partner__role {
  font-size: 11.5px;
  line-height: 1.5;
  color: rgba(244, 245, 242, .55);
}

.page-about .about-partners__note {
  max-width: 64ch;
  margin: 18px 0 0;
  font-size: 13px;
  line-height: 1.78;
  color: rgba(244, 245, 242, .6);
}

/* ---------- 收尾 ---------- */
.page-about .about-cta {
  display: grid;
  gap: 20px;
  margin-top: clamp(32px, 5vw, 60px);
  padding: clamp(22px, 3.4vw, 38px);
  border: 1px solid var(--line-strong);
  background:
    linear-gradient(120deg, rgba(28, 58, 49, .92), rgba(10, 29, 23, .92)),
    var(--ink-2);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 26px), calc(100% - 26px) 100%, 0 100%);
}

.page-about .about-cta__title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -.02em;
  font-size: clamp(20px, 2.8vw, 30px);
  line-height: 1.24;
}

.page-about .about-cta__text {
  max-width: 58ch;
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(244, 245, 242, .78);
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-about .about-wall {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .about-cadence__row {
    grid-template-columns: 132px minmax(0, 1fr);
    gap: 22px;
    align-items: start;
  }

  .page-about .about-cadence__key {
    padding-top: 2px;
  }

  .page-about .about-mile {
    grid-template-columns: 104px minmax(0, 1fr);
    gap: clamp(18px, 3vw, 34px);
  }

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

@media (min-width: 860px) {
  .page-about .about-team {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, 1fr);
    align-items: start;
  }
}

@media (min-width: 940px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1fr) 302px;
    align-items: end;
  }

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

@media (min-width: 1000px) {
  .page-about .about-shell {
    grid-template-columns: var(--about-rail) minmax(0, 1fr);
    gap: var(--about-gap);
  }

  .page-about .about-rail {
    position: sticky;
    top: 96px;
    padding-left: 16px;
  }

  .page-about .about-rail__list {
    display: grid;
    gap: 2px;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-about .about-rail__link {
    border-color: transparent;
    border-left: 2px solid transparent;
    padding: 9px 10px 9px 12px;
  }

  .page-about .about-rail__link:hover,
  .page-about .about-rail__link:focus-visible {
    border-color: transparent;
    border-left-color: var(--gold);
    background: rgba(28, 58, 49, .6);
  }

  .page-about .about-cta {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 28px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-mile,
  .page-about .about-note,
  .page-about .about-partner,
  .page-about .about-rail__link,
  .page-about .about-wall-tab {
    transition: none;
  }
}
<<<END>>>