.page-about .about-crumb-sep {
  color: var(--c-line);
  margin: 0 8px;
}

/* ---------- 刊头 ---------- */
.page-about .about-mast {
  padding: 14px 0 8px;
  text-align: center;
}
.page-about .about-mast__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(30px, 7.4vw, 60px);
  line-height: 1.03;
  letter-spacing: -0.015em;
  color: var(--c-text);
  margin: 16px auto 0;
  max-width: 15ch;
}
.page-about .about-mast__lede {
  margin: 20px auto 0;
  max-width: 60ch;
  font-size: clamp(15px, 1.7vw, 18px);
  line-height: 1.78;
  color: var(--c-muted);
}
.page-about .about-strip {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 40px auto 0;
  max-width: 900px;
  background: var(--c-line);
  border: var(--bd);
  box-shadow: var(--shadow-hard);
  text-align: left;
}
.page-about .about-stat {
  background: var(--c-panel);
  padding: 16px 14px 14px;
}
.page-about .about-stat__num {
  display: block;
  font-family: var(--font-data);
  font-weight: 700;
  font-size: clamp(24px, 5vw, 38px);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--c-text);
}
.page-about .about-stat--key .about-stat__num {
  color: var(--c-lime);
}
.page-about .about-stat__key {
  display: block;
  margin-top: 8px;
  font-size: 12px;
  line-height: 1.55;
  letter-spacing: 0.05em;
  color: var(--c-muted);
}
@media (min-width: 700px) {
  .page-about .about-strip {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .page-about .about-stat {
    padding: 20px 18px 18px;
  }
}

/* ---------- 时间线 ---------- */
.page-about .about-track {
  padding: 56px 0 40px;
}
.page-about .about-track__head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 10px 24px;
  margin-bottom: 30px;
}
.page-about .about-track__hint {
  margin: 0;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--c-muted);
}
.page-about .about-track__scroll {
  overflow-x: auto;
  overflow-y: hidden;
  margin: 0 -20px;
  padding: 0 20px 12px;
}
.page-about .about-track__line {
  position: relative;
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
  min-width: 780px;
}
.page-about .about-track__line::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--c-lime) 0%, var(--c-cyan) 52%, var(--c-line) 100%);
}
.page-about .about-node {
  position: relative;
  flex: 1 1 0;
  display: block;
  padding: 26px 18px 4px 0;
  text-decoration: none;
  color: inherit;
}
.page-about .about-node::before {
  content: "";
  position: absolute;
  top: -6px;
  left: 0;
  width: 12px;
  height: 12px;
  background: var(--c-ink);
  border: 2px solid var(--c-lime);
  transition: background 0.2s var(--ease), transform 0.2s var(--ease);
}
.page-about .about-node:hover::before,
.page-about .about-node:focus-visible::before {
  background: var(--c-lime);
  transform: scale(1.3);
}
.page-about .about-node:focus-visible {
  outline: 2px solid var(--c-lime);
  outline-offset: 4px;
}
.page-about .about-node__idx {
  display: block;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--c-cyan);
}
.page-about .about-node__name {
  display: block;
  margin-top: 8px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 20px;
  letter-spacing: 0.01em;
  color: var(--c-text);
}
.page-about .about-node__desc {
  display: block;
  margin-top: 6px;
  padding-right: 14px;
  font-size: 13px;
  line-height: 1.62;
  color: var(--c-muted);
}

/* ---------- 通用标题 ---------- */
.page-about h2 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(24px, 4.6vw, 42px);
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--c-text);
  margin: 12px 0 0;
}
.page-about .about-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 12px 28px;
  padding-bottom: 16px;
  border-bottom: var(--hair);
  margin-bottom: 28px;
}
.page-about .about-head__note {
  margin: 0;
  max-width: 36ch;
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--c-muted);
}

/* ---------- 我们在做什么 ---------- */
.page-about .about-intro {
  padding-top: 56px;
}
.page-about .about-intro__inner {
  max-width: 760px;
  margin: 0 auto;
}

/* ---------- 团队 ---------- */
.page-about .about-team__grid {
  display: grid;
  gap: 22px;
}
@media (min-width: 960px) {
  .page-about .about-team__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: start;
  }
}
.page-about .about-team__fig {
  position: relative;
  margin: 0;
  border: var(--bd);
  box-shadow: var(--shadow-hard);
  overflow: hidden;
  background: var(--c-panel);
}
.page-about .about-team__fig img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}
.page-about .about-team__cap {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 10px 14px;
  font-family: var(--font-data);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--c-text);
  background: linear-gradient(180deg, rgba(5, 8, 15, 0) 0%, rgba(5, 8, 15, 0.88) 100%);
}
.page-about .about-team__units {
  display: grid;
  gap: 14px;
}
.page-about .about-unit {
  display: flex;
  gap: 14px;
  padding: 16px 16px 15px;
  background: var(--c-panel);
  border: var(--bd);
  border-radius: var(--radius);
  box-shadow: var(--shadow-soft);
  transition: transform 0.2s var(--ease), box-shadow 0.2s var(--ease), border-color 0.2s var(--ease);
}
.page-about .about-unit:hover,
.page-about .about-unit:focus-within {
  transform: translate(-2px, -2px);
  box-shadow: var(--shadow-hard);
  border-color: var(--c-lime-dim);
}
.page-about .about-unit:focus-visible {
  outline: 2px solid var(--c-lime);
  outline-offset: 3px;
}
.page-about .about-unit__idx {
  flex: 0 0 auto;
  padding-top: 2px;
  font-family: var(--font-data);
  font-weight: 700;
  font-size: 22px;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--c-cyan);
}
.page-about .about-unit__name {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 18px;
  letter-spacing: 0.01em;
  color: var(--c-text);
}
.page-about .about-unit__lead {
  margin: 6px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--c-muted);
}
.page-about .about-unit__duty {
  list-style: none;
  margin: 0;
  padding: 0;
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  transition: max-height 0.3s var(--ease), opacity 0.24s var(--ease), margin-top 0.3s var(--ease);
}
.page-about .about-unit:hover .about-unit__duty,
.page-about .about-unit:focus-within .about-unit__duty {
  max-height: 220px;
  opacity: 1;
  margin-top: 10px;
}
.page-about .about-unit__duty li {
  position: relative;
  padding-left: 16px;
  font-size: 13px;
  line-height: 1.72;
  color: var(--c-text);
}
.page-about .about-unit__duty li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.66em;
  width: 6px;
  height: 6px;
  background: var(--c-lime);
}
@media (hover: none) {
  .page-about .about-unit__duty {
    max-height: 220px;
    opacity: 1;
    margin-top: 10px;
  }
}

/* ---------- 覆盖范围 ---------- */
.page-about .about-coverage__grid {
  display: grid;
  gap: 24px;
}
@media (min-width: 960px) {
  .page-about .about-coverage__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: center;
  }
}
.page-about .about-coverage__fig {
  position: relative;
  margin: 0;
  border: var(--bd);
  box-shadow: var(--shadow-hard);
  background: var(--c-panel);
  overflow: hidden;
  aspect-ratio: 12 / 7;
}
.page-about .about-coverage__fig img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.88) contrast(1.06);
}
.page-about .about-coverage__figcap {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 10px 14px;
  font-family: var(--font-data);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--c-text);
  background: linear-gradient(180deg, rgba(5, 8, 15, 0) 0%, rgba(5, 8, 15, 0.88) 100%);
}
.page-about .about-fields {
  margin-top: 30px;
  padding: 18px;
  background: var(--c-panel2);
  border: var(--bd);
  box-shadow: var(--shadow-soft);
}
.page-about .about-fields__cap {
  margin: 0 0 16px;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--c-muted);
}
.page-about .about-fields__grid {
  display: grid;
  gap: 2px;
}
@media (min-width: 720px) {
  .page-about .about-fields__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}
@media (min-width: 1060px) {
  .page-about .about-fields__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}
.page-about .about-fieldset {
  padding: 14px 14px 16px;
  background: var(--c-panel);
  border: var(--hair);
  border-top: 3px solid var(--c-line);
}
.page-about .about-fieldset--score {
  border-top-color: var(--c-lime);
}
.page-about .about-fieldset--card {
  border-top-color: var(--c-red);
}
.page-about .about-fieldset--squad {
  border-top-color: var(--c-amber);
}
.page-about .about-fieldset--tech {
  border-top-color: var(--c-cyan);
}
.page-about .about-fieldset__name {
  margin: 0 0 10px;
  font-family: var(--font-data);
  font-weight: 500;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--c-muted);
}
.page-about .about-fieldset ul {
  list-style: none;
  margin: 0;
  padding: 0;
}
.page-about .about-fieldset li {
  padding: 6px 0;
  font-size: 13.5px;
  line-height: 1.55;
  color: var(--c-text);
  border-bottom: 1px dashed rgba(38, 53, 73, 0.75);
}
.page-about .about-fieldset li:last-child {
  border-bottom: 0;
}

/* ---------- 合作生态 ---------- */
.page-about .about-partners__fig {
  position: relative;
  margin: 0 0 32px;
  border: var(--bd);
  box-shadow: var(--shadow-hard);
  background: var(--c-panel);
  overflow: hidden;
  aspect-ratio: 7 / 4;
}
.page-about .about-partners__fig img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.9) contrast(1.05);
}
.page-about .about-partners__figcap {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 10px 14px;
  font-family: var(--font-data);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--c-text);
  background: linear-gradient(180deg, rgba(5, 8, 15, 0) 0%, rgba(5, 8, 15, 0.88) 100%);
}
.page-about .about-partners__inner {
  max-width: 780px;
}
.page-about .about-flow {
  list-style: none;
  counter-reset: flow;
  margin: 22px 0 0;
  padding: 0;
}
.page-about .about-flow li {
  position: relative;
  padding: 15px 0 15px 56px;
  border-top: var(--hair);
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--c-muted);
}
.page-about .about-flow li::before {
  counter-increment: flow;
  content: counter(flow, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 15px;
  font-family: var(--font-data);
  font-weight: 700;
  font-size: 18px;
  letter-spacing: -0.03em;
  color: var(--c-cyan);
}
.page-about .about-flow strong {
  display: block;
  margin-bottom: 3px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 17px;
  letter-spacing: 0.01em;
  color: var(--c-text);
}

/* ---------- 服务承诺 ---------- */
.page-about .about-promise {
  padding-bottom: 72px;
}
.page-about .about-promise__box {
  padding: 26px 20px;
  border: var(--bd);
  border-left: 4px solid var(--c-lime);
  background: linear-gradient(135deg, rgba(22, 32, 47, 0.92) 0%, rgba(11, 17, 28, 0.96) 100%);
  box-shadow: var(--shadow-hard);
}
@media (min-width: 900px) {
  .page-about .about-promise__box {
    padding: 40px 36px 36px;
  }
}
.page-about .about-promise__list {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 0;
}
@media (min-width: 900px) {
  .page-about .about-promise__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0 34px;
  }
}
.page-about .about-promise__list li {
  position: relative;
  padding: 14px 0 14px 24px;
  border-top: var(--hair);
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--c-text);
}
.page-about .about-promise__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 21px;
  width: 8px;
  height: 8px;
  border: 2px solid var(--c-lime);
}
.page-about .about-promise__list a {
  color: var(--c-lime);
  text-decoration: none;
  border-bottom: 1px solid var(--c-lime-dim);
}
.page-about .about-promise__list a:hover {
  color: var(--c-text);
  border-bottom-color: var(--c-text);
}
.page-about .about-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 30px;
}
</main>