.page-about {
  --about-rail-w: 176px;
  --about-hair: 1px solid var(--line-faint);
  background: var(--ink);
  color: var(--mist);
  overflow-x: hidden;
}

/* ---------- 排版基线 ---------- */
.page-about h1 {
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -0.025em;
  font-size: clamp(32px, 5.4vw, 58px);
  line-height: 1.05;
  margin: 0 0 18px;
}

.page-about h2 {
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -0.018em;
  font-size: clamp(24px, 3vw, 36px);
  line-height: 1.14;
  margin: 0 0 16px;
}

.page-about h3 {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.008em;
  font-size: clamp(17px, 1.6vw, 21px);
  line-height: 1.3;
  margin: 0 0 8px;
}

.page-about .lede {
  font-family: var(--font-editorial);
  font-size: clamp(17px, 1.5vw, 20px);
  line-height: 1.72;
  color: var(--text-mid);
  max-width: 46ch;
  margin: 0;
}

.page-about p {
  font-size: 16px;
  line-height: 1.68;
}

.page-about .crumbs {
  padding-top: clamp(16px, 2.4vw, 26px);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: clamp(24px, 4vw, 46px) 0 clamp(34px, 6vw, 78px);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(
    90deg,
    rgba(122, 106, 87, 0.08) 0 1px,
    transparent 1px 104px
  );
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  top: -20%;
  right: -10%;
  width: 62%;
  height: 130%;
  pointer-events: none;
  background: radial-gradient(
    ellipse at 60% 30%,
    rgba(255, 90, 31, 0.12),
    transparent 68%
  );
}

.page-about .about-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(26px, 4vw, 44px);
  align-items: end;
}

.page-about .about-hero__text {
  padding-top: clamp(8px, 2vw, 26px);
}

.page-about .about-hero__media {
  margin: 0;
  clip-path: polygon(0 4%, 100% 0, 100% 96%, 0 100%);
  overflow: hidden;
  border-top: 2px solid var(--orange);
}

.page-about .about-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(0.92) contrast(1.05);
}

/* ---------- 非对称分栏 ---------- */
.page-about .about-split {
  display: grid;
  gap: clamp(18px, 3vw, 32px);
}

.page-about .about-rail {
  border-top: 2px solid var(--orange);
  padding-top: 12px;
}

.page-about .about-rail__note {
  margin: 12px 0 0;
  font-family: var(--font-editorial);
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-dim);
}

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

.page-about .about-body > p {
  color: var(--text-mid);
  max-width: 62ch;
}

.page-about .about-section-head {
  max-width: 68ch;
  margin-bottom: clamp(20px, 3vw, 34px);
}

.page-about .about-section-head__lede {
  color: var(--text-mid);
  margin: 0;
}

/* ---------- 岗位卡片 ---------- */
.page-about .about-roles {
  display: grid;
  gap: 18px;
  margin-top: clamp(20px, 3vw, 30px);
}

.page-about .about-role {
  padding: 20px 22px 22px;
  color: var(--ink);
}

.page-about .about-role p {
  margin: 0;
  color: #4A3B2B;
}

.page-about .about-role__label {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  padding: 3px 9px;
  margin-bottom: 12px;
  color: var(--ink-deep);
}

.page-about .about-role__label--data {
  background: var(--orange);
  color: var(--paper);
}

.page-about .about-role__label--content {
  background: var(--grass);
  color: var(--paper);
}

.page-about .about-role__label--tech {
  background: var(--glacier);
}

/* ---------- 历程 ---------- */
.page-about .about-history__media {
  margin: 0 0 clamp(26px, 4vw, 44px);
  border-left: 3px solid var(--gold);
  overflow: hidden;
}

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

.page-about .tl {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
}

.page-about .tl::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 14px;
  bottom: 18px;
  width: 1px;
  background: var(--line-faint);
}

.page-about .tl__item {
  position: relative;
  padding: 0 0 clamp(26px, 3.4vw, 40px) 34px;
  transition: transform 0.24s var(--ease);
}

.page-about .tl__item::before {
  content: "";
  position: absolute;
  left: 3px;
  top: 8px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--ink);
  border: 2px solid var(--line);
  transition: border-color 0.22s var(--ease), background 0.22s var(--ease);
}

.page-about .tl__item:hover,
.page-about .tl__item:focus-within {
  transform: translateX(2px);
}

.page-about .tl__item:hover::before,
.page-about .tl__item:focus-within::before {
  border-color: var(--orange);
  background: var(--orange);
}

.page-about .tl__year {
  display: block;
  font-family: var(--font-mono);
  font-size: 15px;
  letter-spacing: 0.06em;
  color: var(--orange);
  margin-bottom: 6px;
}

.page-about .tl__body p {
  margin: 0;
  color: var(--text-mid);
  max-width: 60ch;
}

/* ---------- 发布节奏 ---------- */
.page-about .about-clock {
  display: grid;
  gap: 20px;
  margin: 22px 0 20px;
}

.page-about .about-clock__slot {
  border-left: 2px solid var(--line-soft);
  padding-left: 16px;
}

.page-about .about-clock__slot:first-child {
  border-left-color: var(--orange);
}

.page-about .about-clock__slot:last-child {
  border-left-color: var(--grass-lift);
}

.page-about .about-clock__num {
  font-family: var(--font-mono);
  font-size: clamp(38px, 6vw, 56px);
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--mist);
}

.page-about .about-clock__slot:first-child .about-clock__num {
  color: var(--orange);
}

.page-about .about-clock__unit {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.2em;
  color: var(--text-dim);
  margin-left: 8px;
}

.page-about .about-clock__slot p {
  margin: 10px 0 0;
  color: var(--text-mid);
  max-width: 52ch;
}

.page-about .about-clock__line {
  display: block;
  height: 0;
  border-top: 2px dashed var(--orange);
  opacity: 0.6;
}

.page-about .about-flow__note {
  margin: 0 0 clamp(22px, 3vw, 32px);
  padding: 14px 16px;
  border-left: 3px solid var(--glacier);
  background: rgba(168, 216, 232, 0.07);
  color: var(--text-mid);
 
}

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

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

.page-about .about-flow__caption {
  font-family: var(--font-editorial);
  font-size: 13px;
  font-style: italic;
  color: var(--text-dim);
  padding: 10px 2px 0;
  margin: 0;
}

/* ---------- 专题编排 ---------- */
.page-about .about-topics__grid {
  display: grid;
  gap: 0;
  border-top: var(--about-hair);
}

.page-about .about-topiccard {
  padding: clamp(18px, 3vw, 28px) 0;
  border-bottom: var(--about-hair);
  display: grid;
  gap: 8px;
}

.page-about .about-topiccard__idx {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.24em;
  color: var(--gold);
}

.page-about .about-topiccard h3 {
  margin: 0;
}

.page-about .about-topiccard p {
  margin: 0;
  color: var(--text-mid);
  max-width: 46ch;
}

/* ---------- 覆盖分布 ---------- */
.page-about .about-reach__strip {
  display: grid;
  gap: 18px;
  margin: 24px 0 clamp(24px, 3vw, 34px);
  padding: 20px 18px;
  background: var(--ink-deep);
  border-left: 4px solid var(--orange);
}

.page-about .about-reach__stat {
  display: grid;
  gap: 4px;
  align-content: start;
}

.page-about .about-reach__stat .stat__value {
  font-family: var(--font-mono);
  font-size: clamp(30px, 5vw, 46px);
  line-height: 1;
  letter-spacing: -0.03em;
}

.page-about .about-reach__stat .stat__label {
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--text-dim);
}

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

.page-about .about-regions__row {
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr);
  align-items: center;
  gap: 12px;
}

.page-about .about-regions__name {
  font-size: 14px;
  color: var(--text-mid);
}

.page-about .about-regions__track {
  display: block;
  height: 10px;
  background: rgba(122, 106, 87, 0.18);
  overflow: hidden;
}

.page-about .about-regions__bar {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--orange-deep), var(--orange));
}

.page-about .about-regions__bar--xj { width: 100%; }
.page-about .about-regions__bar--gs { width: 82%; }
.page-about .about-regions__bar--sn { width: 74%; }
.page-about .about-regions__bar--sc { width: 68%; }
.page-about .about-regions__bar--gd { width: 61%; }

/* ---------- 共建 ---------- */
.page-about .about-partners__grid {
  display: grid;
  gap: 18px;
}

.page-about .about-partner-note {
  padding: 20px 0 18px;
  border-top: 2px solid var(--gold);
}

.page-about .about-partner-note p {
  margin: 0;
  color: var(--text-mid);
  max-width: 44ch;
}

.page-about .about-partners__cta {
  margin: clamp(22px, 3vw, 32px) 0 0;
}

/* ---------- 长期跟队 ---------- */
.page-about .about-track__links {
  margin-top: 18px;
  padding-top: 16px;
  border-top: var(--about-hair);
  color: var(--text-mid);
}

.page-about .about-track__links a {
  color: var(--glacier);
  text-decoration: none;
  border-bottom: 1px solid rgba(168, 216, 232, 0.45);
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-about .about-track__links a:hover,
.page-about .about-track__links a:focus-visible {
  color: var(--orange);
  border-bottom-color: var(--orange);
}

/* ---------- 结尾 ---------- */
.page-about .about-cta {
  margin-top: clamp(30px, 5vw, 56px);
}

.page-about .about-cta__inner {
  display: grid;
  gap: 22px;
  padding: clamp(28px, 4vw, 46px) 0;
}

.page-about .about-cta__text h2 {
  margin-bottom: 10px;
}

.page-about .about-cta__text p {
  margin: 0;
  color: var(--text-mid);
  max-width: 56ch;
}

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

.page-about .about-totop__wrap {
  padding: clamp(20px, 3vw, 32px) 0 clamp(28px, 4vw, 44px);
}

.page-about .about-totop {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--text-dim);
  text-decoration: none;
  border-bottom: 1px dashed var(--line-soft);
  padding-bottom: 3px;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-about .about-totop:hover,
.page-about .about-totop:focus-visible {
  color: var(--orange);
  border-bottom-color: var(--orange);
}

/* ---------- 窄屏兜底 ---------- */
.page-about img {
  max-width: 100%;
  height: auto;
}

@media (max-width: 599px) {
  .page-about .about-role {
    padding: 18px 16px 20px;
  }

  .page-about .about-clock__num {
    font-size: 36px;
  }

  .page-about .about-regions__row {
    grid-template-columns: 44px minmax(0, 1fr);
  }
}

/* ---------- 中等以上 ---------- */
@media (min-width: 700px) {
  .page-about .about-roles {
    grid-template-columns: minmax(0, 1fr);
  }

  .page-about .about-role:nth-child(2) {
    margin-left: clamp(0px, 3vw, 30px);
  }

  .page-about .about-role:nth-child(3) {
    margin-left: clamp(0px, 6vw, 60px);
  }

  .page-about .about-clock {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 26px;
    align-items: start;
  }

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

  .page-about .about-reach__strip {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 24px;
  }

  .page-about .about-partners__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 26px;
  }

  .page-about .about-topics__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    border-top: none;
    border-left: var(--about-hair);
  }

  .page-about .about-topiccard {
    border-bottom: none;
    border-right: var(--about-hair);
    padding: clamp(20px, 2.6vw, 30px) clamp(18px, 2vw, 26px);
    align-content: start;
  }

  .page-about .about-cta__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 32px;
  }
}

/* ---------- 宽屏非对称 ---------- */
@media (min-width: 900px) {
  .page-about .about-split {
    grid-template-columns: var(--about-rail-w) minmax(0, 1fr);
    gap: clamp(28px, 4vw, 58px);
  }

  .page-about .about-hero__inner {
    grid-template-columns: minmax(0, 6.4fr) minmax(0, 5.6fr);
    gap: clamp(32px, 4vw, 56px);
  }

  .page-about .about-hero__text {
    padding-bottom: 14px;
  }

  .page-about .tl__item {
    display: grid;
    grid-template-columns: 92px minmax(0, 1fr);
    gap: 22px;
    padding-left: 34px;
  }

  .page-about .tl__year {
    margin-bottom: 0;
    padding-top: 2px;
  }

  .page-about .about-flow__media {
    margin-top: 4px;
  }
}

@media (min-width: 1180px) {
  .page-about .about-split {
    --about-rail-w: 196px;
  }

  .page-about .about-rail__note {
    font-size: 15px;
  }
}
<<<END>>>