.page-about {
  --about-shadow: 0 18px 40px -24px rgba(10, 26, 42, 0.55);
  --about-soft-line: rgba(29, 111, 165, 0.22);
  background: var(--paper);
  color: var(--ink-blue);
  font-family: var(--font-body);
  overflow-x: hidden;
}

.page-about p {
  font-size: 15px;
  line-height: 1.78;
  margin: 0 0 14px;
  color: #2c3d4d;
}

.page-about .about-h2 {
  font-family: var(--font-editorial);
  font-weight: 700;
  font-size: clamp(24px, 4.2vw, 34px);
  line-height: 1.32;
  letter-spacing: -0.01em;
  margin: 10px 0 16px;
  color: var(--ink-blue);
}

.page-about .about-h2--light {
  color: var(--snow);
}

.page-about .eyebrow {
  font-family: var(--font-data);
  letter-spacing: 0.14em;
  color: var(--glacier);
}

.page-about .eyebrow--light {
  color: var(--ice);
}

.page-about .mono {
  font-family: var(--font-data);
  letter-spacing: 0.04em;
}

.page-about .about-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 10px;
  color: var(--glacier);
  font-weight: 600;
  font-size: 14px;
  text-decoration: none;
  border-bottom: 1px solid currentColor;
  padding-bottom: 2px;
}

.page-about .about-link:hover,
.page-about .about-link:focus-visible {
  color: var(--crimson);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding: 26px 0 52px;
}

.page-about .about-hero__inner {
  display: grid;
  gap: 34px;
}

.page-about .about-hero__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(32px, 7vw, 62px);
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin: 12px 0 18px;
  max-width: 13em;
  transform: skewX(-3deg);
  transform-origin: left bottom;
}

.page-about .about-hero__lede {
  font-size: 16px;
  line-height: 1.8;
  max-width: 40em;
  color: #2c3d4d;
}

.page-about .about-hero__stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin: 26px 0 0;
}

.page-about .stat {
  border-top: 2px solid var(--glacier);
  padding-top: 8px;
}

.page-about .stat dt {
  font-size: 11.5px;
  color: var(--rock);
  letter-spacing: 0.06em;
  line-height: 1.5;
}

.page-about .stat dd {
  margin: 5px 0 0;
  font-family: var(--font-data);
  font-size: clamp(15px, 3.4vw, 20px);
  font-weight: 700;
  color: var(--ink-blue);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

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

.page-about .about-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  clip-path: polygon(0 3%, 100% 0, 100% 97%, 0 100%);
  border-radius: 2px;
}

.page-about .about-hero__caption {
  margin-top: 10px;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.05em;
  color: var(--rock);
}

/* ---------- 品牌起点 ---------- */
.page-about .about-origin {
  background: var(--snow);
  padding: 48px 0;
}

.page-about .about-origin__inner {
  display: grid;
  gap: 28px;
}

.page-about .about-origin__text p {
  max-width: 56ch;
}

.page-about .about-origin__aside {
  padding: 24px 22px;
  border-left: 3px solid var(--crimson);
}

.page-about .about-origin__quote {
  font-family: var(--font-editorial);
  font-size: clamp(18px, 3.6vw, 22px);
  line-height: 1.5;
  font-weight: 700;
  color: var(--ink-blue);
  margin: 0 0 12px;
}

.page-about .about-origin__note {
  font-size: 14px;
  line-height: 1.7;
  color: #34495c;
  margin: 0;
}

/* ---------- 时间带 ---------- */
.page-about .about-timeline {
  padding: 54px 0;
  background: var(--paper);
}

.page-about .about-section-head__lede {
  font-size: 15px;
  line-height: 1.78;
  max-width: 52ch;
  color: #34495c;
}

.page-about .timeline {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-about .timeline__item {
  position: relative;
  display: grid;
  gap: 6px;
  padding: 18px 0 18px 22px;
  border-left: 2px solid var(--about-soft-line);
}

.page-about .timeline__item::before {
  content: "";
  position: absolute;
  left: -7px;
  top: 26px;
  width: 12px;
  height: 12px;
  background: var(--paper);
  border: 2px solid var(--glacier);
  transform: rotate(45deg);
}

.page-about .timeline__year {
  margin: 0;
  font-size: 19px;
  font-weight: 700;
  color: var(--glacier);
}

.page-about .timeline__body h3 {
  margin: 0 0 6px;
  font-size: 16.5px;
  font-weight: 700;
  color: var(--ink-blue);
}

.page-about .timeline__body p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: #2c3d4d;
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  padding: 54px 0;
  background: var(--snow);
}

.page-about .about-team__intro {
  display: grid;
  gap: 28px;
  align-items: center;
}

.page-about .about-team__lede {
  font-size: 15px;
  line-height: 1.8;
  max-width: 46ch;
  color: #2c3d4d;
}

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

.page-about .about-team__media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: 2px;
  border: 1px solid var(--line-ice);
}

.page-about .about-team__media figcaption {
  margin-top: 8px;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.05em;
  color: var(--rock);
}

.page-about .role-grid {
  list-style: none;
  margin: 32px 0 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-about .role-card {
  background: var(--paper);
  padding: 20px 18px;
  border-left: 3px solid var(--glacier);
  box-shadow: var(--about-shadow);
}

.page-about .role-card--crimson {
  border-left-color: var(--crimson);
}

.page-about .role-card--yellow {
  border-left-color: var(--yellow);
}

.page-about .role-card--turquoise {
  border-left-color: var(--turquoise);
}

.page-about .role-card--glacier {
  border-left-color: var(--glacier);
}

.page-about .role-card h3 {
  margin: 10px 0 8px;
  font-family: var(--font-editorial);
  font-size: 17px;
  line-height: 1.45;
  font-weight: 700;
  color: var(--ink-blue);
}

.page-about .role-card p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.72;
  color: #2c3d4d;
}

.page-about .role-card__list {
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
  display: grid;
  gap: 6px;
  font-size: 13px;
  color: #34495c;
}

.page-about .role-card__list li::before {
  content: "—";
  color: var(--glacier);
  margin-right: 6px;
}

.page-about .tag--glacier {
  background: var(--glacier);
  color: #ffffff;
}

/* ---------- 数据方法 ---------- */
.page-about .about-method {
  padding: 54px 0;
  background: var(--paper);
}

.page-about .about-method__inner {
  display: grid;
  gap: 34px;
  align-items: center;
}

.page-about .about-method__figure {
  display: grid;
  justify-items: center;
  gap: 14px;
}

.page-about .about-method__figure svg {
  width: 100%;
  max-width: 330px;
  height: auto;
}

.page-about .diamond {
  stroke-width: 2;
}

.page-about .diamond--outer {
  stroke: rgba(166, 43, 58, 0.75);
  fill: rgba(166, 43, 58, 0.07);
}

.page-about .diamond--mid {
  stroke: rgba(233, 178, 60, 0.9);
  fill: rgba(233, 178, 60, 0.12);
}

.page-about .diamond--core {
  stroke: var(--turquoise);
  fill: rgba(46, 158, 143, 0.2);
}

.page-about .diamond-label {
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 700;
  fill: var(--ink-blue);
}

.page-about .method-legend {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px 18px;
  font-size: 12.5px;
  color: #34495c;
}

.page-about .method-legend li {
  display: flex;
  align-items: center;
  gap: 8px;
}

.page-about .method-legend__mark {
  display: inline-block;
  width: 10px;
  height: 10px;
  transform: rotate(45deg);
}

.page-about .method-legend__mark--outer {
  background: var(--crimson);
}

.page-about .method-legend__mark--mid {
  background: var(--yellow);
}

.page-about .method-legend__mark--core {
  background: var(--turquoise);
}

.page-about .about-method__text p {
  max-width: 44em;
}

.page-about .method-steps {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  gap: 18px;
}

.page-about .method-steps li {
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 12px;
}

.page-about .method-steps__num {
  font-size: 12.5px;
  font-weight: 700;
  color: var(--crimson);
  padding-top: 4px;
}

.page-about .method-steps h3 {
  margin: 0 0 4px;
  font-size: 16px;
  font-weight: 700;
  color: var(--ink-blue);
}

.page-about .method-steps p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: #2c3d4d;
}

/* ---------- 服务网络 ---------- */
.page-about .about-network {
  padding: 54px 0;
  background: var(--snow);
}

.page-about .about-network__inner {
  display: grid;
  gap: 30px;
  align-items: center;
}

.page-about .about-network__text p {
  max-width: 46ch;
}

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

.page-about .network-facts li {
  display: grid;
  grid-template-columns: 46px 1fr;
  gap: 10px;
  align-items: start;
  font-size: 14px;
  line-height: 1.7;
  color: #2c3d4d;
}

.page-about .network-facts .mono {
  font-size: 20px;
  font-weight: 700;
  color: var(--crimson);
  line-height: 1.3;
}

.page-about .about-network__matrix-label {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--glacier);
}

.page-about .about-network__matrix {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: 6px;
}

.page-about .about-network__matrix span {
  display: block;
  aspect-ratio: 1 / 1;
  background: var(--paper);
  border: 1px solid var(--about-soft-line);
  transition: background 0.2s ease, transform 0.2s ease, border-color 0.2s ease;
}

.page-about .about-network__matrix span:nth-child(3n + 1) {
  background: rgba(29, 111, 165, 0.18);
}

.page-about .about-network__matrix span:nth-child(5n) {
  background: rgba(46, 158, 143, 0.28);
}

.page-about .about-network__matrix span:hover,
.page-about .about-network__matrix span:focus-visible {
  background: var(--crimson);
  border-color: var(--crimson);
  transform: scale(1.12);
}

/* ---------- 资质 ---------- */
.page-about .about-credentials {
  padding: 54px 0;
  background: var(--night);
  color: var(--snow);
}

.page-about .about-credentials__inner {
  display: grid;
  gap: 34px;
  align-items: center;
}

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

.page-about .cred-item {
  display: grid;
  grid-template-columns: 40px 1fr;
  gap: 14px;
  padding: 16px 0;
  border-top: 1px solid rgba(139, 200, 234, 0.18);
}

.page-about .cred-item__num {
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--yellow);
  padding-top: 3px;
}

.page-about .cred-item h3 {
  margin: 0 0 4px;
  font-size: 16px;
  font-weight: 700;
  color: var(--snow);
}

.page-about .cred-item p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--footer-muted);
}

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

.page-about .about-credentials__media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid rgba(139, 200, 234, 0.25);
}

/* ---------- 工作原则 ---------- */
.page-about .about-principles {
  padding: 54px 0;
  background: var(--paper);
}

.page-about .principle-list {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
}

.page-about .principle-list li {
  display: grid;
  grid-template-columns: 42px 1fr;
  gap: 14px;
  padding: 18px 0;
  border-top: 1px solid var(--line);
}

.page-about .principle-list .mono {
  font-size: 12.5px;
  font-weight: 700;
  color: var(--glacier);
  padding-top: 4px;
}

.page-about .principle-list h3 {
  margin: 0 0 6px;
  font-size: 16.5px;
  font-weight: 700;
  color: var(--ink-blue);
}

.page-about .principle-list p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  max-width: 58ch;
  color: #2c3d4d;
}

/* ---------- 下一步 ---------- */
.page-about .about-next {
  padding: 48px 0 58px;
  background: var(--snow);
}

.page-about .next-grid {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .next-card {
  display: grid;
  gap: 6px;
  padding: 18px;
  background: var(--paper);
  border-left: 3px solid var(--glacier);
  text-decoration: none;
  color: var(--ink-blue);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.page-about .next-card .mono {
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--crimson);
}

.page-about .next-card strong {
  font-size: 15.5px;
  font-weight: 700;
}

.page-about .next-card span:last-child {
  font-size: 13px;
  line-height: 1.6;
  color: var(--rock);
}

.page-about .next-card:hover,
.page-about .next-card:focus-visible {
  transform: translateY(-3px);
  box-shadow: var(--about-shadow);
}

.page-about a:focus-visible,
.page-about .next-card:focus-visible {
  outline: 2px solid var(--crimson);
  outline-offset: 3px;
}

@media (min-width: 700px) {
  .page-about .role-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .page-about .timeline__item {
    grid-template-columns: 92px 1fr;
    gap: 20px;
    padding-left: 26px;
  }

  .page-about .timeline__year {
    font-size: 21px;
  }

  .page-about .timeline__body {
    max-width: 60ch;
  }

  .page-about .about-network__matrix {
    grid-template-columns: repeat(8, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-about .about-hero {
    padding: 34px 0 64px;
  }

  .page-about .about-hero__inner {
    grid-template-columns: 1.05fr 0.95fr;
    gap: 48px;
    align-items: center;
  }

  .page-about .about-origin {
    padding: 64px 0;
  }

  .page-about .about-origin__inner {
    grid-template-columns: 1.45fr 0.85fr;
    gap: 44px;
    align-items: start;
  }

  .page-about .about-timeline,
  .page-about .about-method,
  .page-about .about-principles {
    padding: 68px 0;
  }

  .page-about .about-team,
  .page-about .about-network,
  .page-about .about-credentials {
    padding: 68px 0;
  }

  .page-about .about-team__intro {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }

  .page-about .role-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    margin-top: 40px;
  }

  .page-about .about-method__inner {
    grid-template-columns: 0.85fr 1.15fr;
    gap: 52px;
  }

  .page-about .about-network__inner {
    grid-template-columns: 1.05fr 0.95fr;
    gap: 48px;
  }

  .page-about .about-credentials__inner {
    grid-template-columns: 1.25fr 0.75fr;
    gap: 52px;
  }

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

  .page-about .about-next {
    padding: 56px 0 72px;
  }
}

@media (min-width: 1200px) {
  .page-about .about-hero__title {
    font-size: 66px;
  }

  .page-about .about-hero__media img {
    clip-path: polygon(0 2%, 100% 0, 100% 98%, 0 100%);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-hero__title {
    transform: none;
  }

  .page-about .next-card,
  .page-about .about-network__matrix span {
    transition: none;
  }

  .page-about .next-card:hover,
  .page-about .next-card:focus-visible {
    transform: none;
  }
}

已在上方输出。