.page-about {
  --about-gap: clamp(1.25rem, 3vw, 2.5rem);
  --about-measure: 40rem;
  position: relative;
  overflow-x: clip;
  background:
    radial-gradient(120% 70% at 12% -10%, rgba(23, 62, 92, .68), transparent 62%),
    radial-gradient(90% 60% at 100% 6%, rgba(185, 134, 75, .14), transparent 60%),
    var(--ink-950);
  color: var(--mist-100);
  padding-bottom: clamp(2rem, 5vw, 4rem);
}

.page-about h1,
.page-about h2,
.page-about h3 {
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -.015em;
  line-height: 1.14;
  color: var(--paper-050);
}

.page-about p {
  margin: 0;
  line-height: 1.78;
}

.page-about .breadcrumb {
  margin-bottom: clamp(1.5rem, 4vw, 3rem);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding-top: clamp(1.5rem, 4vw, 3rem);
}

.page-about .about-hero__grid {
  display: grid;
  gap: var(--about-gap);
  align-items: start;
}

.page-about .about-hero__intro {
  display: grid;
  gap: var(--sp-3);
}

.page-about .about-hero h1 {
  font-size: clamp(2.1rem, 7vw, 3.6rem);
  max-width: 22em;
}

.page-about .about-hero__lede {
  max-width: var(--about-measure);
  font-size: clamp(.95rem, 1.6vw, 1.05rem);
  color: var(--steel-300);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
  margin-top: var(--sp-2);
}

.page-about .about-anno {
  display: none;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .38em;
  color: var(--copper-500);
  text-transform: uppercase;
}

.page-about .about-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: clamp(2rem, 5vw, 3.5rem) 0 0;
  background: var(--line-soft);
  border-top: 1px solid var(--line-copper);
  border-bottom: 1px solid var(--line-soft);
}

.page-about .about-stat {
  display: flex;
  flex-direction: column-reverse;
  gap: .35rem;
  padding: var(--sp-3) var(--sp-2);
  background: var(--ink-900);
}

.page-about .about-stat__num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(1.5rem, 4vw, 2.1rem);
  font-weight: 700;
  color: var(--copper-300);
  line-height: 1;
}

.page-about .about-stat__num tspan {
  font-size: .58em;
  color: var(--steel-300);
  margin-left: .18em;
}

.page-about .about-stat__label {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .12em;
  color: var(--steel-300);
}

.page-about .about-hero__frame {
  position: relative;
  margin: clamp(2rem, 5vw, 3.5rem) 0 0;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--line-copper);
  background: var(--ink-900);
}

.page-about .about-hero__frame img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  opacity: .78;
  filter: saturate(.85);
}

.page-about .about-hero__cap {
  position: relative;
  padding: var(--sp-2) var(--sp-3);
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .06em;
  color: var(--steel-300);
  border-top: 1px solid var(--line-soft);
  background: linear-gradient(90deg, rgba(11, 34, 57, .95), rgba(6, 20, 37, .8));
}

/* ---------- 正文骨架 ---------- */
.page-about .about-body {
  display: grid;
  gap: clamp(2rem, 5vw, 3rem);
  margin-top: clamp(2.5rem, 6vw, 4rem);
}

.page-about .about-index {
  border-top: 1px solid var(--line-copper);
  padding-top: var(--sp-2);
}

.page-about .about-index__title {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .24em;
  color: var(--copper-500);
  margin-bottom: var(--sp-2);
}

.page-about .about-index__list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: .35rem 1rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-index__link {
  display: flex;
  gap: .6rem;
  padding: .45rem 0;
  font-size: .88rem;
  color: var(--steel-300);
  text-decoration: none;
  border-bottom: 1px dashed transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .about-index__link span {
  font-family: var(--font-mono);
  font-size: .72rem;
  color: var(--copper-500);
  padding-top: .18em;
}

.page-about .about-index__link:hover,
.page-about .about-index__link:focus-visible {
  color: var(--paper-050);
  border-bottom-color: var(--line-copper-strong);
}

.page-about .about-columns {
  display: grid;
  gap: clamp(2rem, 5vw, 3.5rem);
  min-width: 0;
}

/* ---------- 章节通用 ---------- */
.page-about .about-section {
  padding-top: clamp(1.75rem, 4vw, 2.75rem);
  border-top: 1px solid var(--line-soft);
}

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

.page-about .about-section__head {
  display: grid;
  gap: var(--sp-2);
  margin-bottom: clamp(1.5rem, 3vw, 2.25rem);
}

.page-about .about-section__num {
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .3em;
  color: var(--copper-500);
}

.page-about .about-section h2 {
  font-size: clamp(1.5rem, 4.4vw, 2.15rem);
  max-width: 24em;
}

.page-about .about-section__lede {
  max-width: var(--about-measure);
  font-size: .95rem;
  color: var(--steel-300);
}

/* ---------- 三条做法 ---------- */
.page-about .about-pillars {
  display: grid;
  gap: clamp(1rem, 2.5vw, 1.5rem);
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-pillar {
  display: grid;
  gap: .5rem;
  padding: var(--sp-3) var(--sp-3) var(--sp-4);
  border-left: 2px solid var(--line-copper);
  background: linear-gradient(135deg, rgba(23, 62, 92, .55), rgba(6, 20, 37, 0) 78%);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.page-about .about-pillar__num {
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .14em;
  color: var(--copper-300);
}

.page-about .about-pillar h3 {
  font-size: clamp(1.05rem, 2.4vw, 1.2rem);
}

.page-about .about-pillar p {
  font-size: .92rem;
  color: var(--steel-300);
  max-width: 34rem;
}

/* ---------- 时间线 ---------- */
.page-about .about-timeline {
  position: relative;
  display: grid;
  gap: clamp(1.25rem, 3vw, 2rem);
  margin: 0;
  padding: 0 0 0 1.6rem;
  list-style: none;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: .42rem;
  top: .5rem;
  bottom: .5rem;
  width: 1px;
  background: linear-gradient(180deg, var(--line-copper-strong), rgba(185, 134, 75, .12));
}

.page-about .about-stage {
  position: relative;
  display: grid;
  gap: .35rem;
}

.page-about .about-stage::before {
  content: "";
  position: absolute;
  left: -1.6rem;
  top: .55rem;
  width: .62rem;
  height: .62rem;
  border-radius: 50%;
  background: var(--ink-950);
  border: 1px solid var(--copper-500);
  box-shadow: 0 0 0 4px rgba(6, 20, 37, .9);
}

.page-about .about-stage:hover::before {
  background: var(--copper-300);
  border-color: var(--copper-300);
}

.page-about .about-stage__num {
  font-family: var(--font-mono);
  font-size: clamp(1.6rem, 4vw, 2.2rem);
  font-weight: 700;
  line-height: 1;
  color: rgba(185, 134, 75, .45);
}

.page-about .about-stage__body {
  display: grid;
  gap: .4rem;
}

.page-about .about-stage__meta {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .16em;
  color: var(--teal-400);
}

.page-about .about-stage h3 {
  font-size: clamp(1.02rem, 2.4vw, 1.18rem);
}

.page-about .about-stage p {
  font-size: .92rem;
  color: var(--steel-300);
  max-width: 34rem;
}

/* ---------- 编校流程 ---------- */
.page-about .about-editorial {
  display: grid;
  gap: clamp(1.5rem, 4vw, 2.5rem);
}

.page-about .about-flow {
  display: grid;
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.page-about .about-flow__step {
  display: grid;
  grid-template-columns: 2.1rem minmax(0, 1fr);
  gap: var(--sp-2);
  padding: var(--sp-3);
  background: rgba(11, 34, 57, .72);
  backdrop-filter: blur(6px);
}

.page-about .about-flow__num {
  font-family: var(--font-mono);
  font-size: .82rem;
  font-weight: 700;
  color: var(--copper-300);
  padding-top: .2em;
}

.page-about .about-flow__step h3 {
  font-size: 1rem;
  margin-bottom: .3rem;
}

.page-about .about-flow__step p {
  font-size: .9rem;
  color: var(--steel-300);
}

.page-about .about-editorial__figure {
  margin: 0;
  display: grid;
  gap: .55rem;
}

.page-about .about-editorial__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border-radius: var(--radius-md);
  border: 1px solid var(--line-soft);
  opacity: .82;
  filter: saturate(.8);
}

.page-about .about-editorial__cap,
.page-about .about-local__cap {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .05em;
  color: var(--steel-300);
}

/* ---------- 小组分工 ---------- */
.page-about .about-team {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-team__row {
  display: grid;
  gap: .55rem;
  padding: clamp(1.1rem, 2.5vw, 1.6rem) 0;
  border-top: 1px solid var(--line-soft);
}

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

.page-about .about-team__head {
  display: grid;
  gap: .3rem;
}

.page-about .about-team__head h3 {
  font-size: clamp(1.02rem, 2.4vw, 1.15rem);
}

.page-about .about-team__meta {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .08em;
  color: var(--orange-500);
}

.page-about .about-team__duty {
  font-size: .92rem;
  color: var(--steel-300);
  max-width: 34rem;
}

/* ---------- 本地化 ---------- */
.page-about .about-local {
  display: grid;
  gap: clamp(1.5rem, 4vw, 2.5rem);
}

.page-about .about-local__text {
  display: grid;
  gap: var(--sp-3);
}

.page-about .about-local__text p {
  font-size: .94rem;
  color: var(--steel-300);
  max-width: var(--about-measure);
}

.page-about .about-local__list {
  display: grid;
  gap: .5rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-local__list li {
  position: relative;
  padding-left: 1.15rem;
  font-size: .9rem;
  color: var(--mist-100);
}

.page-about .about-local__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .62em;
  width: .42rem;
  height: .42rem;
  background: var(--teal-400);
  border-radius: 1px;
}

.page-about .about-local__figure {
  margin: 0;
  display: grid;
  gap: .55rem;
}

.page-about .about-local__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 7;
  object-fit: cover;
  border-radius: var(--radius-md);
  border: 1px solid var(--line-copper);
  opacity: .8;
  filter: saturate(.7) brightness(.95);
}

/* ---------- 档案与备案 ---------- */
.page-about .about-record {
  background: linear-gradient(160deg, rgba(23, 62, 92, .5), rgba(6, 20, 37, .9) 70%);
  border: 1px solid var(--line-copper);
  border-radius: var(--radius-md);
  padding: clamp(1.25rem, 3vw, 2.25rem);
}

.page-about .about-archive {
  display: grid;
  gap: 0;
  margin: 0;
}

.page-about .about-archive__item {
  display: grid;
  gap: .2rem;
  padding: .85rem 0;
  border-bottom: 1px solid var(--line-soft);
}

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

.page-about .about-archive__key {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .12em;
  color: var(--copper-300);
}

.page-about .about-archive__val {
  margin: 0;
  font-size: .95rem;
  color: var(--paper-050);
  word-break: break-word;
}

.page-about .about-record__note {
  margin-top: var(--sp-4);
  font-size: .88rem;
  color: var(--steel-300);
  max-width: var(--about-measure);
}

.page-about .about-record__note a {
  color: var(--copper-300);
  text-decoration: underline;
  text-underline-offset: .22em;
}

.page-about .about-record__note a:hover,
.page-about .about-record__note a:focus-visible {
  color: var(--paper-050);
}

.page-about .about-record__links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
  margin-top: var(--sp-4);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-about .about-stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

  .page-about .about-archive__item {
    grid-template-columns: 10rem minmax(0, 1fr);
    gap: var(--sp-3);
    align-items: baseline;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 8fr) minmax(0, 3fr);
    align-items: end;
  }

  .page-about .about-anno {
    display: block;
    writing-mode: vertical-rl;
    justify-self: end;
    align-self: start;
    margin-top: .4rem;
  }

  .page-about .about-stats {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

  .page-about .about-body {
    grid-template-columns: 13rem minmax(0, 1fr);
    gap: clamp(2rem, 4vw, 3.5rem);
    align-items: start;
  }

  .page-about .about-index {
    position: sticky;
    top: 7.5rem;
  }

  .page-about .about-index__list {
    grid-template-columns: minmax(0, 1fr);
    gap: .1rem;
  }

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

  .page-about .about-timeline {
    padding-left: 7rem;
  }

  .page-about .about-timeline::before {
    left: 5.2rem;
  }

  .page-about .about-stage {
    grid-template-columns: 5.4rem minmax(0, 1fr);
    gap: var(--sp-3);
    align-items: start;
  }

  .page-about .about-stage::before {
    left: -2.1rem;
    top: .75rem;
  }

  .page-about .about-stage:nth-child(even) {
    margin-left: clamp(1rem, 3vw, 2.5rem);
  }

  .page-about .about-editorial {
    grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
    align-items: start;
  }

  .page-about .about-team__row {
    grid-template-columns: minmax(0, 4fr) minmax(0, 7fr);
    gap: var(--sp-4);
    align-items: start;
  }

  .page-about .about-local {
    grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
    align-items: start;
    gap: clamp(1.5rem, 4vw, 3rem);
  }

  .page-about .about-local__figure {
    position: sticky;
    top: 8rem;
  }
}

@media (min-width: 1180px) {
  .page-about .about-body {
    grid-template-columns: 15rem minmax(0, 1fr);
  }
}

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