.page-about {
  --about-rail-w: 124px;
  background: var(--paper);
  color: var(--ink);
}

.page-about .about-crumbs {
  padding-top: 20px;
  padding-bottom: 4px;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding: clamp(24px, 4vw, 48px) 0 clamp(36px, 5vw, 64px);
  background: linear-gradient(180deg, var(--paper) 0%, #f1ebdd 100%);
  border-bottom: 1px solid var(--hairline-gold);
}

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 48px);
  align-items: end;
}

.page-about .about-hero__title {
  font-family: var(--font-display);
  font-weight: 200;
  font-size: clamp(2.1rem, 5.4vw, 4.3rem);
  line-height: 1.08;
  letter-spacing: -0.04em;
  color: var(--ink-green);
  margin: 0.4em 0 0.55em;
  max-width: 13em;
}

.page-about .about-hero__title strong {
  font-weight: 700;
  color: var(--pine);
}

.page-about .about-hero__lede {
  max-width: 35em;
  color: var(--ink-mute);
  margin-bottom: 26px;
}

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

.page-about .about-hero__visual {
  position: relative;
  min-height: 300px;
  border: 1px solid var(--hairline-gold);
  background:
    radial-gradient(120% 90% at 68% 28%, rgba(232, 180, 74, 0.24), transparent 62%),
    radial-gradient(90% 80% at 18% 92%, rgba(46, 107, 255, 0.2), transparent 66%),
    linear-gradient(158deg, #0e2e25 0%, #16392d 55%, #0e2e25 100%);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px 20px;
}

.page-about .about-hero__rule {
  position: absolute;
  left: 22px;
  top: 22px;
  bottom: 22px;
  width: 1px;
  background: linear-gradient(180deg, transparent, rgba(232, 180, 74, 0.6), transparent);
}

.page-about .about-hero__phone {
  position: relative;
  width: 132px;
  aspect-ratio: 9 / 19.5;
  border: 1px solid rgba(232, 180, 74, 0.55);
  border-radius: 20px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.16), rgba(255, 255, 255, 0.03));
  box-shadow: 0 0 0 6px rgba(255, 255, 255, 0.03), 0 26px 60px rgba(0, 0, 0, 0.36);
  padding: 18px 12px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  z-index: 1;
}

.page-about .about-hero__bar {
  height: 6px;
  border-radius: 3px;
  background: rgba(232, 180, 74, 0.62);
}

.page-about .about-hero__bar--short {
  width: 58%;
  background: rgba(246, 241, 230, 0.32);
}

.page-about .about-hero__dot {
  margin-top: auto;
  height: 26px;
  border-radius: 3px;
  background: linear-gradient(90deg, #e8b44a, #f4d28c);
}

.page-about .about-hero__caption {
  position: absolute;
  right: 22px;
  bottom: 20px;
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  color: rgba(232, 180, 74, 0.85);
}

/* ---------- 数据条 ---------- */
.page-about .about-stats {
  list-style: none;
  margin: clamp(28px, 4vw, 44px) 0 0;
  padding: 24px 0 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
  border-top: 1px solid var(--hairline);
}

.page-about .about-stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-about .about-stat__num {
  font-family: var(--font-display);
  font-weight: 200;
  font-size: clamp(2.3rem, 5vw, 3.4rem);
  line-height: 1;
  letter-spacing: -0.05em;
  color: var(--ink-green);
  font-variant-numeric: tabular-nums;
}

.page-about .about-stat__unit {
  font-size: 0.4em;
  font-weight: 600;
  letter-spacing: 0;
  margin-left: 0.1em;
  color: var(--pine);
}

.page-about .about-stat__label {
  font-size: 0.82rem;
  line-height: 1.6;
  letter-spacing: 0.01em;
  color: var(--ink-mute);
  max-width: 20em;
}

/* ---------- 共用标题 ---------- */
.page-about .about-h2 {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(1.5rem, 3.1vw, 2.3rem);
  line-height: 1.25;
  letter-spacing: -0.02em;
  color: var(--ink-green);
  margin: 0 0 14px;
  max-width: 20em;
}

.page-about .about-lead {
  font-size: 1rem;
  line-height: 1.8;
  color: var(--ink-mute);
  max-width: 36em;
  margin: 0 0 8px;
}

/* ---------- 年鉴 + 时间轴 ---------- */
.page-about .about-chronicle {
  padding: clamp(48px, 7vw, 92px) 0;
}

.page-about .about-ledger {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 56px);
}

.page-about .about-rail {
  display: none;
}

.page-about .about-rail__label {
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  color: var(--pine);
  margin: 0 0 14px;
}

.page-about .about-rail__list {
  list-style: none;
  margin: 0;
  padding: 0 0 0 16px;
  border-left: 1px solid var(--hairline-gold);
  display: grid;
  gap: 14px;
}

.page-about .about-rail__item {
  display: flex;
  align-items: baseline;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.84rem;
  letter-spacing: 0.06em;
  color: var(--ink-mute);
  text-decoration: none;
  transition: color var(--dur) var(--ease);
}

.page-about .about-rail__item:hover,
.page-about .about-rail__item:focus-visible {
  color: var(--ink-green);
}

.page-about .about-rail__item:focus-visible {
  outline: 2px solid var(--volt);
  outline-offset: 3px;
}

.page-about .about-rail__idx {
  font-size: 0.66rem;
  color: rgba(232, 180, 74, 0.9);
}

.page-about .about-timeline {
  display: grid;
  grid-template-columns: 1fr;
  margin-top: clamp(24px, 4vw, 40px);
}

.page-about .about-node {
  position: relative;
  padding: 26px 0 26px 30px;
  border-left: 1px solid var(--hairline-gold);
  outline: none;
}

.page-about .about-node::before {
  content: "";
  position: absolute;
  left: -5px;
  top: 32px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--gold);
  transition: transform var(--dur) var(--ease);
}

.page-about .about-node--current::before {
  background: var(--paper);
  border: 1px solid var(--gold);
  box-sizing: border-box;
}

.page-about .about-node:hover::before,
.page-about .about-node:focus-visible::before {
  transform: scale(1.6);
}

.page-about .about-node:focus-visible {
  outline: 2px solid var(--volt);
  outline-offset: 6px;
}

.page-about .about-node__year {
  font-size: 0.76rem;
  letter-spacing: 0.16em;
  color: var(--pine);
  margin: 0 0 8px;
}

.page-about .about-node__title {
  font-size: 1.06rem;
  font-weight: 600;
  line-height: 1.4;
  color: var(--ink);
  margin: 0 0 8px;
}

.page-about .about-node__text {
  font-size: 0.9rem;
  line-height: 1.72;
  color: var(--ink-mute);
  margin: 0;
}

.page-about .about-node__more {
  margin: 0;
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  font-size: 0.84rem;
  line-height: 1.7;
  color: var(--pine);
  transition: max-height 240ms var(--ease), opacity 200ms var(--ease), margin-top 200ms var(--ease);
}

.page-about .about-node:hover .about-node__more,
.page-about .about-node:focus-visible .about-node__more {
  max-height: 160px;
  opacity: 1;
  margin-top: 10px;
}

/* ---------- 双版本对照 ---------- */
.page-about .about-compare {
  padding: clamp(48px, 7vw, 92px) 0;
  background: var(--sand);
  border-top: 1px solid var(--hairline);
  border-bottom: 1px solid var(--hairline);
}

.page-about .about-compare__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 52px);
  margin-top: clamp(22px, 4vw, 36px);
}

.page-about .about-dims {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid rgba(18, 25, 23, 0.18);
}

.page-about .about-dim {
  display: grid;
  grid-template-columns: 32px minmax(0, 1fr);
  gap: 2px 14px;
  padding: 16px 10px 16px 0;
  border-bottom: 1px solid rgba(18, 25, 23, 0.12);
  transition: background-color var(--dur) var(--ease);
}

.page-about .about-dim:hover {
  background: rgba(255, 255, 255, 0.55);
}

.page-about .about-dim__idx {
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  color: var(--pine);
  padding-top: 4px;
}

.page-about .about-dim__name {
  font-size: 0.98rem;
  font-weight: 600;
  color: var(--ink);
}

.page-about .about-dim__desc {
  grid-column: 2;
  margin: 4px 0 0;
  font-size: 0.88rem;
  line-height: 1.72;
  color: var(--ink-mute);
}

/* ---------- 图片 ---------- */
.page-about .about-figure {
  margin: 0;
}

.page-about .about-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  border: 1px solid var(--hairline);
  background: var(--sand);
}

.page-about .about-figure figcaption {
  margin-top: 10px;
  font-size: 0.76rem;
  line-height: 1.65;
  letter-spacing: 0.01em;
  color: var(--ink-mute);
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  padding: clamp(48px, 7vw, 92px) 0;
}

.page-about .about-team__grid,
.page-about .about-cadence__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 56px);
  align-items: start;
}

.page-about .about-roles {
  list-style: none;
  margin: 22px 0 20px;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .about-roles li {
  display: grid;
  grid-template-columns: 2.4em minmax(0, 1fr);
  gap: 14px;
  align-items: baseline;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--hairline);
  font-size: 0.9rem;
  line-height: 1.72;
  color: var(--ink-mute);
}

.page-about .about-roles b {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.32rem;
  letter-spacing: -0.02em;
  color: var(--pine);
}

.page-about .about-team__note {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--ink-mute);
  max-width: 36em;
}

/* ---------- 服务范围 ---------- */
.page-about .about-reach {
  padding: clamp(48px, 7vw, 92px) 0;
  background: var(--ink-green);
  color: var(--paper);
}

.page-about .about-reach .about-h2 {
  color: var(--paper);
}

.page-about .about-reach p {
  color: var(--paper-mute);
  font-size: 0.95rem;
  line-height: 1.82;
  max-width: 34em;
}

.page-about .about-reach__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 56px);
  align-items: center;
}

.page-about .about-reach__visual {
  border: 1px solid rgba(232, 180, 74, 0.28);
  padding: 18px;
  background: rgba(255, 255, 255, 0.03);
}

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

.page-about .about-reach__figures {
  list-style: none;
  margin: 26px 0 22px;
  padding: 20px 0 0;
  border-top: 1px solid rgba(232, 180, 74, 0.32);
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.page-about .about-reach__figures li {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-about .about-reach__num {
  font-family: var(--font-display);
  font-weight: 200;
  font-size: clamp(1.7rem, 4vw, 2.5rem);
  line-height: 1;
  letter-spacing: -0.04em;
  color: var(--gold);
  font-variant-numeric: tabular-nums;
}

.page-about .about-reach__unit {
  font-size: 0.44em;
  font-weight: 600;
  margin-left: 0.06em;
}

.page-about .about-reach__tag {
  font-size: 0.76rem;
  line-height: 1.5;
  color: var(--paper-mute);
}

.page-about .about-reach__addr {
  padding-top: 18px;
  border-top: 1px solid rgba(232, 180, 74, 0.22);
  font-size: 0.84rem !important;
}

/* ---------- 发布节奏 ---------- */
.page-about .about-cadence {
  padding: clamp(48px, 7vw, 92px) 0;
  background: var(--paper);
}

.page-about .about-cols {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-about .about-col__link {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 2px 14px;
  padding: 18px 16px;
  border: 1px solid var(--hairline);
  border-left: 2px solid var(--gold);
  background: rgba(255, 255, 255, 0.5);
  text-decoration: none;
  transition: border-color var(--dur) var(--ease), background-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-about .about-col__link:hover {
  transform: translateY(-3px);
  background: var(--white);
  border-color: var(--hairline-gold);
}

.page-about .about-col__link:focus-visible {
  outline: 2px solid var(--volt);
  outline-offset: 3px;
}

.page-about .about-col__idx {
  grid-row: span 2;
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--gold);
  padding-top: 4px;
}

.page-about .about-col__name {
  font-size: 1.02rem;
  font-weight: 600;
  color: var(--ink-green);
}

.page-about .about-col__desc {
  font-size: 0.85rem;
  line-height: 1.7;
  color: var(--ink-mute);
}

/* ---------- 收束 ---------- */
.page-about .about-next {
  padding: 0 0 clamp(56px, 8vw, 96px);
  background: var(--paper);
}

.page-about .about-next__panel {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
  padding: clamp(28px, 4vw, 48px);
  background: linear-gradient(140deg, #0e2e25 0%, #17392d 100%);
  border: 1px solid rgba(232, 180, 74, 0.34);
}

.page-about .about-next__title {
  color: var(--paper);
  margin-bottom: 10px;
}

.page-about .about-next__copy p {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.8;
  color: var(--paper-mute);
  max-width: 34em;
}

.page-about .about-next__copy .eyebrow {
  color: var(--gold);
}

.page-about .about-next__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: flex-start;
}

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

  .page-about .about-stat {
    padding-left: 28px;
    border-left: 1px solid var(--hairline-gold);
  }

  .page-about .about-stat:first-child {
    padding-left: 0;
    border-left: 0;
  }

  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }

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

@media (min-width: 900px) {
  .page-about .about-compare__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    align-items: start;
  }

  .page-about .about-team__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }

  .page-about .about-cadence__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }

  .page-about .about-reach__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  }
}

@media (min-width: 960px) {
  .page-about .about-ledger {
    grid-template-columns: var(--about-rail-w) minmax(0, 1fr);
  }

  .page-about .about-rail {
    display: block;
    position: sticky;
    top: calc(var(--header-h) + 32px);
    align-self: start;
  }

  .page-about .about-timeline {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .about-node {
    padding: 34px 24px 0 0;
    border-left: 0;
    border-top: 1px solid var(--hairline-gold);
  }

  .page-about .about-node::before {
    left: 0;
    top: -5px;
  }

  .page-about .about-node--current::before {
    left: 0;
    top: -5px;
  }
}

@media (hover: none) {
  .page-about .about-node__more {
    max-height: none;
    opacity: 1;
    margin-top: 10px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-node::before,
  .page-about .about-node__more,
  .page-about .about-col__link,
  .page-about .about-dim {
    transition: none;
  }

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