.page-about {
  --about-gap: clamp(1rem, 3.2vw, 1.6rem);
  overflow-x: hidden;
  background: var(--paper);
  color: var(--ink);
}

.page-about .about-crumb {
  padding-top: 1.1rem;
  padding-bottom: .6rem;
}

/* 刊头 */
.page-about .about-masthead {
  position: relative;
  overflow: hidden;
  padding: clamp(1.6rem, 5vw, 3.4rem) 0 clamp(2rem, 5vw, 3rem);
  background:
    linear-gradient(118deg, rgba(14, 124, 102, .10) 0 34%, transparent 34.2%),
    linear-gradient(118deg, transparent 0 66%, rgba(75, 58, 112, .10) 66.2% 100%),
    var(--paper);
  border-bottom: 1px solid var(--line);
}

.page-about .about-masthead::before {
  content: "";
  position: absolute;
  top: -22%;
  right: -14%;
  width: min(48vw, 420px);
  aspect-ratio: 1;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  opacity: .5;
  pointer-events: none;
}

.page-about .about-masthead__inner {
  position: relative;
  display: grid;
  justify-items: center;
  text-align: center;
  gap: 1rem;
}

.page-about .about-title {
  margin: 0;
  max-width: 20ch;
  font-family: var(--font-head);
  font-size: clamp(1.95rem, 7vw, 3.25rem);
  line-height: 1.1;
  letter-spacing: -.02em;
  font-weight: 800;
}

.page-about .about-lede {
  margin: 0;
  max-width: 46rem;
  font-size: clamp(.96rem, 2.6vw, 1.06rem);
  line-height: 1.8;
  color: var(--graphite);
}

.page-about .about-meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: .5rem .8rem;
  margin: .2rem 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-meta__item {
  display: inline-flex;
  align-items: baseline;
  gap: .4rem;
  padding: .38rem .7rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--glass);
  font-family: var(--font-mono);
  font-size: .76rem;
  letter-spacing: .01em;
  color: var(--ink);
}

.page-about .about-meta__key {
  color: var(--meadow-deep);
  font-size: .7rem;
}

.page-about .about-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: .6rem;
  margin-top: .4rem;
}

/* 封面图 */
.page-about .about-coverwrap {
  padding-top: var(--about-gap);
}

.page-about .about-cover {
  margin: 0;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}

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

/* 章节头 */
.page-about .about-sec-head {
  display: grid;
  gap: .55rem;
  max-width: 44rem;
  margin-bottom: clamp(1.2rem, 4vw, 2rem);
}

.page-about .about-sec-head h2 {
  margin: 0;
  font-family: var(--font-head);
  font-size: clamp(1.4rem, 4.6vw, 2rem);
  line-height: 1.2;
  letter-spacing: -.015em;
}

.page-about .about-sec-head__lede {
  margin: 0;
  color: var(--graphite);
  line-height: 1.75;
  font-size: .96rem;
}

.page-about .about-sec-head--onink h2 {
  color: var(--on-ink);
}

.page-about .about-sec-head--onink .about-sec-head__lede {
  color: var(--on-ink-dim);
}

/* 时间线 */
.page-about .about-tl {
  display: grid;
  gap: .9rem;
}

.page-about .about-tl__item {
  display: grid;
  gap: .7rem;
  padding: 1.15rem 1.1rem;
  background: #fff;
  border: 1px solid var(--line);
  border-left: 4px solid var(--meadow);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

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

.page-about .about-tl__rail {
  display: flex;
  align-items: center;
  gap: .6rem;
}

.page-about .about-tl__year {
  font-family: var(--font-mono);
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -.02em;
  color: var(--meadow-deep);
}

.page-about .about-tl__item:nth-child(even) .about-tl__year {
  color: var(--dusk);
}

.page-about .about-tl__body h3 {
  margin: 0 0 .4rem;
  font-family: var(--font-head);
  font-size: 1.08rem;
  line-height: 1.35;
  letter-spacing: -.01em;
}

.page-about .about-tl__body p {
  margin: 0;
  font-size: .93rem;
  line-height: 1.75;
  color: var(--graphite);
}

.page-about .about-fold {
  margin-top: .75rem;
  padding-top: .55rem;
  border-top: 1px dashed var(--line-strong);
}

.page-about .about-fold summary {
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .04em;
  color: var(--meadow-deep);
  list-style: none;
}

.page-about .about-fold summary::-webkit-details-marker {
  display: none;
}

.page-about .about-fold summary::before {
  content: "+ ";
}

.page-about .about-fold[open] summary::before {
  content: "− ";
}

.page-about .about-fold p {
  margin-top: .5rem;
  font-size: .9rem;
  line-height: 1.75;
  color: var(--graphite);
}

.page-about .about-tl__foot {
  margin: 1.2rem 0 0;
  padding-left: .9rem;
  border-left: 3px solid var(--signal);
  font-family: var(--font-mono);
  font-size: .8rem;
  line-height: 1.7;
  color: var(--graphite);
}

/* 团队 */
.page-about .about-team__grid {
  display: grid;
  gap: clamp(1.2rem, 4vw, 2.2rem);
}

.page-about .about-team__fig {
  margin: 0;
  border-radius: var(--radius);
  overflow: hidden;
}

.page-about .about-team__text h2 {
  margin: 0 0 .6rem;
  font-family: var(--font-head);
  font-size: clamp(1.4rem, 4.6vw, 2rem);
  line-height: 1.2;
  letter-spacing: -.015em;
}

.page-about .about-team__lede {
  margin: 0 0 1.2rem;
  font-size: .95rem;
  line-height: 1.8;
  color: var(--graphite);
}

.page-about .about-roles {
  display: grid;
  gap: .9rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-role {
  padding: .9rem .95rem;
  background: rgba(255, 255, 255, .78);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.page-about .about-role__num {
  display: block;
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .08em;
  color: var(--signal);
  margin-bottom: .3rem;
}

.page-about .about-role__title {
  margin: 0 0 .3rem;
  font-family: var(--font-head);
  font-size: 1rem;
  letter-spacing: -.01em;
}

.page-about .about-role p {
  margin: 0;
  font-size: .88rem;
  line-height: 1.7;
  color: var(--graphite);
}

/* 区域覆盖 */
.page-about .about-region__grid {
  display: grid;
  gap: clamp(1.2rem, 4vw, 2rem);
}

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

.page-about .about-region__fig {
  margin: 0 0 1rem;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line);
}

.page-about .about-nodes {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(6.6rem, 1fr));
  gap: .45rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-node {
  display: flex;
  align-items: center;
  gap: .4rem;
  padding: .42rem .6rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--paper-deep);
  font-size: .8rem;
  color: var(--ink);
  transition: background-color .2s ease, border-color .2s ease, color .2s ease, transform .2s ease;
}

.page-about .about-node__dot {
  width: .45rem;
  height: .45rem;
  border-radius: 50%;
  background: var(--data);
  flex: 0 0 auto;
}

.page-about .about-node:hover,
.page-about .about-node:focus-visible {
  background: var(--mist);
  border-color: var(--meadow);
  color: var(--meadow-deep);
  transform: translateY(-2px);
  outline: none;
}

.page-about .about-node:focus-visible {
  box-shadow: 0 0 0 2px var(--meadow);
}

.page-about .about-stats {
  display: grid;
  gap: .7rem;
  align-content: start;
}

.page-about .about-stat {
  padding: .9rem 1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
}

.page-about .about-stat__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -.03em;
  color: var(--ink);
  line-height: 1.1;
}

.page-about .about-stat:nth-child(1) {
  border-top: 3px solid var(--data);
}

.page-about .about-stat:nth-child(2) {
  border-top: 3px solid var(--meadow);
}

.page-about .about-stat:nth-child(3) {
  border-top: 3px solid var(--dusk);
}

.page-about .about-stat__label {
  display: block;
  margin-top: .2rem;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .04em;
  color: var(--graphite);
}

.page-about .about-stat p {
  margin: .5rem 0 0;
  font-size: .84rem;
  line-height: 1.65;
  color: var(--graphite);
}

/* 更新节奏 */
.page-about .about-cadence {
  display: grid;
  gap: .9rem;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: cadence;
}

.page-about .about-cadence__item {
  padding: 1.1rem 1.1rem 1.2rem;
  background: rgba(255, 255, 255, .82);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  border-bottom: 4px solid var(--meadow);
}

.page-about .about-cadence__item--hot {
  border-bottom-color: var(--signal);
}

.page-about .about-cadence__item--audit {
  border-bottom-color: var(--dusk);
}

.page-about .about-cadence__tag {
  display: inline-block;
  margin-bottom: .45rem;
  padding: .18rem .5rem;
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .06em;
  color: var(--meadow-deep);
  background: var(--mist);
  border-radius: 3px;
}

.page-about .about-cadence__item--hot .about-cadence__tag {
  color: var(--signal-deep);
  background: rgba(232, 93, 42, .13);
}

.page-about .about-cadence__item--audit .about-cadence__tag {
  color: var(--dusk);
  background: var(--lilac);
}

.page-about .about-cadence__item h3 {
  margin: 0 0 .35rem;
  font-family: var(--font-head);
  font-size: 1.05rem;
  letter-spacing: -.01em;
}

.page-about .about-cadence__item p {
  margin: 0;
  font-size: .9rem;
  line-height: 1.75;
  color: var(--graphite);
}

/* 合作与荣誉 */
.page-about .about-partners__grid {
  display: grid;
  gap: clamp(1.2rem, 4vw, 2rem);
}

.page-about .about-partners__text h2 {
  margin: 0 0 .7rem;
  font-family: var(--font-head);
  font-size: clamp(1.4rem, 4.6vw, 2rem);
  line-height: 1.2;
  letter-spacing: -.015em;
}

.page-about .about-partners__text p {
  margin: 0 0 .8rem;
  font-size: .95rem;
  line-height: 1.8;
  color: var(--graphite);
}

.page-about .about-partners__text .eb-btn {
  margin-top: .3rem;
}

.page-about .about-honor {
  padding: 1.3rem 1.2rem;
  background: var(--dusk);
  color: var(--on-ink);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.page-about .about-honor__year {
  display: block;
  font-family: var(--font-mono);
  font-size: 1.7rem;
  font-weight: 700;
  letter-spacing: -.03em;
  color: var(--meadow-soft);
  margin-bottom: .3rem;
}

.page-about .about-honor__title {
  margin: 0 0 .5rem;
  font-family: var(--font-head);
  font-size: 1.05rem;
  line-height: 1.4;
  color: #fff;
}

.page-about .about-honor__text {
  margin: 0 0 .9rem;
  font-size: .88rem;
  line-height: 1.75;
  color: rgba(255, 255, 255, .78);
}

.page-about .about-honor .eb-tag {
  margin-right: .4rem;
}

/* 深墨索引 */
.page-about .about-index__grid {
  display: grid;
  gap: .7rem;
}

.page-about .about-index__link {
  display: grid;
  gap: .3rem;
  padding: 1rem 1.05rem;
  text-decoration: none;
  color: var(--on-ink);
  border: 1px solid rgba(233, 225, 211, .22);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, .04);
  transition: border-color .2s ease, background-color .2s ease, transform .2s ease;
}

.page-about .about-index__link:hover,
.page-about .about-index__link:focus-visible {
  border-color: var(--meadow-soft);
  background: rgba(158, 227, 206, .10);
  transform: translateY(-2px);
  outline: none;
}

.page-about .about-index__num {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .1em;
  color: var(--signal);
}

.page-about .about-index__title {
  font-family: var(--font-head);
  font-size: 1.02rem;
  letter-spacing: -.01em;
}

.page-about .about-index__note {
  font-size: .84rem;
  line-height: 1.65;
  color: var(--on-ink-dim);
}

/* 响应式 */
@media (min-width: 600px) {
  .page-about .about-tl__item {
    padding: 1.3rem 1.35rem;
  }

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

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

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

  .page-about .about-index__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 860px) {
  .page-about .about-tl__item {
    grid-template-columns: 7.5rem minmax(0, 1fr);
    gap: 1.4rem;
    align-items: start;
  }

  .page-about .about-tl__item:nth-child(even) {
    margin-left: 3.5rem;
  }

  .page-about .about-tl__item:nth-child(odd) {
    margin-right: 3.5rem;
  }

  .page-about .about-team__grid {
    grid-template-columns: minmax(0, .92fr) minmax(0, 1.08fr);
    align-items: start;
  }

  .page-about .about-region__grid {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    align-items: start;
  }

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

  .page-about .about-partners__grid {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
    align-items: start;
  }
}

@media (min-width: 1080px) {
  .page-about .about-title {
    max-width: 24ch;
  }

  .page-about .about-masthead__inner {
    gap: 1.15rem;
  }

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

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

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