.page-about {
  --about-section-gap: clamp(64px, 9vw, 116px);
  --about-axis: var(--copper);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding-top: clamp(28px, 5vw, 56px);
  padding-bottom: clamp(24px, 4vw, 40px);
}

.page-about .about-hero__grid {
  display: grid;
  gap: clamp(32px, 5vw, 56px);
}

.page-about .about-hero__lead .d1 {
  margin: 12px 0 0;
  font-size: clamp(30px, 5.4vw, 54px);
  line-height: 1.15;
  letter-spacing: -0.01em;
  color: var(--walnut);
  max-width: 18ch;
}

.page-about .about-hero__lead .lede {
  margin: 22px 0 0;
  max-width: 56ch;
  color: var(--walnut);
  opacity: 0.86;
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.page-about .about-hero__aside {
  display: flex;
  align-items: flex-start;
  gap: 20px;
}

.page-about .about-hero__vnote {
  writing-mode: vertical-rl;
  text-orientation: mixed;
  letter-spacing: 0.28em;
  font-size: 12px;
  color: var(--stone);
  margin: 0;
  padding-top: 6px;
  white-space: nowrap;
}

.page-about .about-facts {
  flex: 1 1 auto;
  min-width: 0;
  margin: 0;
  border-top: 1px solid var(--line);
}

.page-about .about-fact {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 13px 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-about .about-fact__label {
  margin: 0;
  font-size: 13px;
  color: var(--stone);
  letter-spacing: 0.04em;
}

.page-about .about-fact__value {
  margin: 0;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(22px, 3vw, 28px);
  font-weight: 700;
  color: var(--copper);
  line-height: 1;
}

/* ---------- 关键词带 ---------- */
.page-about .about-keywords {
  margin: clamp(34px, 5vw, 62px) 0 0;
}

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

.page-about .about-keywords .band__item {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.05em;
  color: var(--walnut);
  white-space: nowrap;
  padding: 0 clamp(16px, 2.4vw, 30px);
}

.page-about .about-keywords .band__item + .band__item {
  border-left: 1px solid var(--line-soft);
}

/* ---------- 通用章节 ---------- */
.page-about .about-section {
  margin-top: var(--about-section-gap);
}

.page-about .about-section__head {
  max-width: 62ch;
  margin-bottom: clamp(28px, 4vw, 46px);
}

.page-about .about-section__head .d2 {
  margin: 10px 0 0;
  font-size: clamp(24px, 3.6vw, 38px);
  line-height: 1.22;
  color: var(--walnut);
}

.page-about .about-section__intro {
  margin: 18px 0 0;
  color: var(--walnut);
  opacity: 0.84;
  max-width: 58ch;
}

/* ---------- 时间轴 ---------- */
.page-about .tl {
  position: relative;
}

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

.page-about .tl__group::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 14px;
  bottom: 4px;
  width: 1px;
  background-image: repeating-linear-gradient(
    to bottom,
    var(--copper-soft) 0 5px,
    transparent 5px 11px
  );
}

.page-about .tl__item {
  position: relative;
  display: grid;
  gap: 6px 18px;
  padding: 0 0 clamp(28px, 4vw, 42px) 30px;
  border-bottom: 1px solid var(--line-soft);
  margin-bottom: clamp(28px, 4vw, 42px);
}

.page-about .tl__item:last-child {
  border-bottom: 0;
  margin-bottom: 0;
}

.page-about .tl__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 7px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--wool);
  border: 2px solid var(--about-axis);
  box-sizing: border-box;
}

.page-about .tl__year {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(17px, 2.1vw, 21px);
  font-weight: 700;
  color: var(--copper);
  letter-spacing: 0.02em;
  line-height: 1.1;
}

.page-about .tl__body h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: clamp(18px, 2.2vw, 21px);
  font-weight: 700;
  color: var(--walnut);
  line-height: 1.35;
}

.page-about .tl__body p {
  margin: 0;
  color: var(--walnut);
  opacity: 0.82;
  max-width: 58ch;
  font-size: 15.5px;
  line-height: 1.78;
}

.page-about .tl__decade {
  margin: clamp(30px, 4.5vw, 48px) 0;
  padding: clamp(18px, 2.6vw, 26px) clamp(20px, 3vw, 34px);
  background: var(--moss);
  color: var(--wool);
  border-radius: var(--radius);
  border-left: 4px solid var(--copper-soft);
}

.page-about .tl__decade-text {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(15px, 1.9vw, 18px);
  line-height: 1.6;
  letter-spacing: 0.01em;
}

/* ---------- 品类标签墙 ---------- */
.page-about .about-cats__list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: clamp(20px, 3vw, 30px);
}

.page-about .about-cats__tab {
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1;
  padding: 11px 18px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--wool-2);
  color: var(--walnut);
  cursor: pointer;
  transition: background 220ms var(--ease), color 220ms var(--ease),
    border-color 220ms var(--ease), transform 220ms var(--ease);
}

.page-about .about-cats__tab:hover {
  border-color: var(--terracotta);
  transform: translateY(-1px);
}

.page-about .about-cats__tab[aria-selected="true"] {
  background: var(--moss);
  border-color: var(--moss);
  color: var(--wool);
  font-weight: 600;
}

.page-about .about-cats__tab:focus-visible {
  outline: 2px solid var(--peacock);
  outline-offset: 2px;
}

.page-about .about-cats__panel {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--wool-2);
  padding: clamp(24px, 3.4vw, 40px);
  box-shadow: var(--shadow-s);
}

.page-about .about-cats__panel[hidden] {
  display: none;
}

.page-about .about-cats__name {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-size: clamp(20px, 2.6vw, 25px);
  font-weight: 700;
  color: var(--walnut);
}

.page-about .about-cats__name::before {
  content: "";
  display: inline-block;
  width: 18px;
  height: 2px;
  margin-right: 12px;
  vertical-align: 0.34em;
  background: var(--copper);
}

.page-about .about-cats__panel p {
  margin: 0 0 18px;
  max-width: 60ch;
  color: var(--walnut);
  opacity: 0.84;
  line-height: 1.78;
}

.page-about .about-cats__link {
  color: var(--peacock);
  font-size: 15px;
  text-decoration: underline;
  text-underline-offset: 4px;
  text-decoration-thickness: 1px;
}

.page-about .about-cats__link:hover {
  color: var(--pomegranate);
}

/* ---------- 图文分栏 ---------- */
.page-about .about-split {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
  align-items: start;
}

.page-about .about-split__figure {
  margin: 0;
}

.page-about .about-split__text .d2 {
  margin: 10px 0 18px;
  font-size: clamp(23px, 3.2vw, 34px);
  line-height: 1.24;
  color: var(--walnut);
}

.page-about .about-split__text > p {
  margin: 0 0 18px;
  color: var(--walnut);
  opacity: 0.84;
  line-height: 1.78;
  max-width: 56ch;
}

.page-about .about-split__sub {
  margin: clamp(24px, 3vw, 32px) 0 14px;
  font-family: var(--font-display);
  font-size: clamp(17px, 2.1vw, 20px);
  font-weight: 700;
  color: var(--walnut);
}

.page-about .about-split__foot {
  margin-top: clamp(20px, 3vw, 28px) !important;
  padding-top: 20px;
  border-top: 1px solid var(--line-soft);
  font-size: 15.5px;
  line-height: 1.78;
}

/* 测试项目 */
.page-about .about-tests {
  list-style: none;
  margin: 8px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-about .about-tests__item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 18px;
  border-bottom: 1px solid var(--line-soft);
  color: var(--walnut);
  font-size: 15px;
  line-height: 1.4;
}

.page-about .about-tests__item:nth-child(odd) {
  border-right: 1px solid var(--line-soft);
}

.page-about .about-tests__item:nth-last-child(-n + 2) {
  border-bottom: 0;
}

.page-about .about-tests__idx {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 12px;
  color: var(--copper);
  letter-spacing: 0.08em;
}

/* 数字带 */
.page-about .about-stats {
  list-style: none;
  margin: 6px 0 clamp(24px, 3vw, 32px);
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-about .about-stat {
  background: var(--wool-2);
  padding: 18px 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-about .about-stat__value {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(26px, 3.6vw, 36px);
  font-weight: 700;
  line-height: 1;
  color: var(--copper);
}

.page-about .about-stat__label {
  font-size: 13.5px;
  color: var(--stone);
  line-height: 1.5;
}

/* 上门流程 */
.page-about .about-flow {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: none;
}

.page-about .about-flow__step {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px dashed var(--line-soft);
  color: var(--walnut);
  font-size: 15.5px;
  line-height: 1.6;
}

.page-about .about-flow__step:last-child {
  border-bottom: 0;
}

.page-about .about-flow__n {
  flex: 0 0 auto;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  border: 1px solid var(--copper);
  color: var(--copper);
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 20px;
  text-align: center;
}

/* ---------- 新疆 ---------- */
.page-about .about-cities {
  list-style: none;
  margin: 0 0 clamp(28px, 4vw, 44px);
  padding: clamp(16px, 2.4vw, 22px) clamp(18px, 2.6vw, 26px);
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  background: var(--moss);
  border-radius: var(--radius);
}

.page-about .about-cities__item {
  padding: 8px 16px;
  border: 1px solid rgba(246, 241, 231, 0.42);
  border-radius: 999px;
  color: var(--wool);
  font-size: 14px;
  letter-spacing: 0.04em;
  white-space: nowrap;
}

.page-about .about-split--xj .about-split__text > p {
  max-width: 52ch;
}

.page-about .about-split--xj .btn {
  margin-top: 8px;
}

/* ---------- 伙伴卡片 ---------- */
.page-about .about-cards {
  display: grid;
  gap: clamp(16px, 2.4vw, 24px);
  grid-template-columns: 1fr;
}

.page-about .about-card {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--wool-2);
  padding: clamp(22px, 2.8vw, 32px);
  box-shadow: var(--shadow-s);
  transition: border-color 240ms var(--ease), transform 240ms var(--ease),
    box-shadow 240ms var(--ease);
}

.page-about .about-card:hover {
  border-color: var(--copper);
  transform: translateY(-3px);
  box-shadow: var(--shadow-m);
}

.page-about .about-card .card__meta {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--terracotta);
  text-transform: none;
}

.page-about .about-card .card__title {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-size: clamp(17px, 2vw, 20px);
  font-weight: 700;
  line-height: 1.4;
  color: var(--walnut);
}

.page-about .about-card p:last-child {
  margin: 0;
  color: var(--walnut);
  opacity: 0.82;
  font-size: 15px;
  line-height: 1.78;
}

/* ---------- 收尾 ---------- */
.page-about .about-cta {
  margin-top: var(--about-section-gap);
  margin-bottom: clamp(48px, 8vw, 96px);
}

.page-about .about-cta__inner {
  position: relative;
  background: var(--walnut);
  color: var(--wool);
  border-radius: var(--radius-lg);
  padding: clamp(30px, 5vw, 64px);
  overflow: hidden;
}

.page-about .about-cta__inner::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 4px;
  background: linear-gradient(90deg, var(--copper) 0%, var(--pomegranate) 100%);
}

.page-about .about-cta__eyebrow {
  color: var(--copper-soft);
  margin-top: 6px;
}

.page-about .about-cta__inner .d2 {
  margin: 12px 0 16px;
  font-size: clamp(23px, 3.4vw, 36px);
  line-height: 1.24;
  color: var(--wool);
  max-width: 22ch;
}

.page-about .about-cta__text {
  margin: 0 0 28px;
  max-width: 54ch;
  color: var(--wool);
  opacity: 0.86;
  line-height: 1.78;
}

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

.page-about .about-cta__aside {
  margin: 24px 0 0;
  font-size: 14px;
  color: var(--copper-soft);
  opacity: 0.9;
}

.page-about .about-cta__aside a {
  color: var(--copper-soft);
  text-decoration: underline;
  text-underline-offset: 4px;
}

.page-about .about-cta__aside a:hover {
  color: var(--wool);
}

/* ---------- 图片 ---------- */
.page-about .figure,
.page-about .figure__frame,
.page-about .figure img {
  max-width: 100%;
}

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

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 0.9fr);
    align-items: start;
  }

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

  .page-about .about-tests__item {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
    border-bottom: 0;
    border-right: 1px solid var(--line-soft);
  }

  .page-about .about-tests__item:last-child {
    border-right: 0;
  }

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

  .page-about .about-cities {
    gap: 12px;
  }
}

@media (min-width: 900px) {
  .page-about .about-split--img-left {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 1fr);
  }

  .page-about .about-split--img-right {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.08fr);
  }

  .page-about .about-split--img-right .about-split__figure {
    order: 2;
  }

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

@media (min-width: 1024px) {
  .page-about .tl__item {
    grid-template-columns: 92px minmax(0, 1fr);
    padding-left: 38px;
  }

  .page-about .tl__year {
    text-align: left;
  }
}

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

  .page-about .about-card:hover,
  .page-about .about-cats__tab:hover {
    transform: none;
  }
}
<<<END>>>