.page-about {
  background: var(--fb-ink-900);
  color: var(--fb-text);
  overflow-x: clip;
}

/* ---------- 扉页 ---------- */
.page-about .about-hero {
  position: relative;
  padding: 36px 0 52px;
  border-bottom: 1px solid var(--fb-hairline);
  background:
    radial-gradient(125% 95% at 80% -5%, rgba(53, 227, 224, 0.14), transparent 58%),
    linear-gradient(180deg, #0A1826 0%, #0C2032 100%);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(42, 65, 90, 0.34) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(42, 65, 90, 0.22) 1px, transparent 1px);
  background-size: 92px 92px;
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.65), transparent 78%);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.65), transparent 78%);
}

.page-about .about-hero > .fb-container {
  position: relative;
  z-index: 1;
}

.page-about .about-hero__grid {
  display: grid;
  gap: 30px;
  padding-top: 22px;
}

.page-about .about-hero__title {
  margin: 14px 0 18px;
  max-width: 20ch;
}

.page-about .about-hero__lead {
  max-width: 58ch;
}

.page-about .about-hero__scale {
  padding-left: 18px;
  border-left: 2px solid var(--fb-cyan);
}

.page-about .about-hero__scale-title {
  margin: 0 0 14px;
  font-family: var(--fb-font-head);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--fb-text-muted);
}

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

.page-about .about-hero__tick {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  align-items: baseline;
  gap: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(42, 65, 90, 0.62);
}

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

.page-about .about-hero__tick-s {
  font-family: var(--fb-font-num);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--fb-orange);
}

.page-about .about-hero__tick-t {
  font-size: 14px;
  line-height: 1.5;
  color: var(--fb-text);
}

/* 章节索引 */
.page-about .about-toc {
  margin-top: 38px;
  padding-top: 20px;
  border-top: 1px solid var(--fb-hairline);
}

.page-about .about-toc__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 6px 24px;
}

.page-about .about-toc__link {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 4px 0;
  font-size: 14px;
  color: var(--fb-text-muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--fb-ease), border-color var(--fb-ease);
}

.page-about .about-toc__link:hover,
.page-about .about-toc__link:focus-visible {
  color: var(--fb-cyan);
  border-bottom-color: var(--fb-cyan);
}

.page-about .about-toc__n {
  font-family: var(--fb-font-num);
  font-size: 12px;
  font-weight: 600;
  color: var(--fb-orange);
}

/* ---------- 通用章节头 ---------- */
.page-about .about-head {
  display: grid;
  gap: 14px;
  padding-top: 20px;
  margin-bottom: 34px;
  border-top: 1px solid var(--fb-hairline);
}

.page-about .fb-section--paper .about-head {
  border-top-color: var(--fb-hairline-on-paper);
}

.page-about .about-head__num {
  font-family: var(--fb-font-num);
  font-size: clamp(30px, 6vw, 50px);
  font-weight: 600;
  line-height: 1;
  letter-spacing: -0.02em;
  color: transparent;
  -webkit-text-stroke: 1px var(--fb-cyan);
}

.page-about .fb-section--paper .about-head__num {
  -webkit-text-stroke-color: rgba(15, 31, 46, 0.42);
}

.page-about .about-head__title {
  margin: 10px 0 14px;
  max-width: 24ch;
}

.page-about .about-head__lead {
  margin: 0;
  max-width: 66ch;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--fb-text-muted);
}

.page-about .fb-section--paper .about-head__lead {
  color: rgba(15, 31, 46, 0.76);
}

.page-about .about-jump {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-about .about-jump__link {
  display: inline-block;
  padding: 6px 12px;
  font-size: 13px;
  color: var(--fb-text);
  text-decoration: none;
  border: 1px solid var(--fb-hairline);
  border-radius: var(--fb-radius);
  transition: color var(--fb-ease), border-color var(--fb-ease), background-color var(--fb-ease);
}

.page-about .about-jump__link:hover,
.page-about .about-jump__link:focus-visible {
  color: var(--fb-ink-900);
  background: var(--fb-cyan);
  border-color: var(--fb-cyan);
}

/* ---------- 01 团队 ---------- */
.page-about .about-team__layout {
  display: grid;
  gap: 30px;
}

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

.page-about .about-team__cards {
  display: grid;
  gap: 16px;
}

.page-about .about-role {
  position: relative;
  padding: 22px 20px 22px 26px;
  background: var(--fb-ink-700);
  border: 1px solid var(--fb-hairline);
  border-radius: var(--fb-radius);
  box-shadow: 0 1px 0 rgba(0, 0, 0, 0.25);
  transition: transform var(--fb-ease), border-color var(--fb-ease);
}

.page-about .about-role::before {
  content: "";
  position: absolute;
  left: 0;
  top: 20px;
  bottom: 20px;
  width: 3px;
  background: var(--fb-cyan);
}

.page-about .about-role--data::before {
  background: var(--fb-orange);
}

.page-about .about-role--front::before {
  background: var(--fb-turf);
}

.page-about .about-role:hover {
  transform: translateY(-2px);
  border-color: var(--fb-cyan);
}

.page-about .about-role__num {
  margin: 0;
  font-family: var(--fb-font-num);
  font-size: 34px;
  font-weight: 600;
  line-height: 1;
  color: var(--fb-orange);
}

.page-about .about-role__title {
  margin: 8px 0 8px;
  font-size: 19px;
}

.page-about .about-role__text {
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--fb-text-muted);
}

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

.page-about .about-role__list .fb-list__item {
  font-size: 14px;
  line-height: 1.7;
  color: var(--fb-text);
}

/* ---------- 02 生产线（浅色纸面） ---------- */
.page-about .about-flow {
  list-style: none;
  margin: 0 0 36px;
  padding: 0;
  display: grid;
  gap: 18px;
}

.page-about .about-flow__step {
  position: relative;
  padding: 26px 20px 24px;
  background: #FBF9F4;
  border: 1px solid var(--fb-hairline-on-paper);
  transition: transform var(--fb-ease), box-shadow var(--fb-ease);
}

.page-about .about-flow__step::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 20px;
  width: 44px;
  height: 3px;
  background: var(--fb-orange);
}

.page-about .about-flow__step:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 22px rgba(15, 31, 46, 0.1);
}

.page-about .about-flow__idx {
  display: block;
  margin-bottom: 10px;
  font-family: var(--fb-font-num);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--fb-orange);
}

.page-about .about-flow__title {
  margin: 0 0 8px;
  font-size: 20px;
  color: var(--fb-text-on-light);
}

.page-about .about-flow__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(15, 31, 46, 0.76);
}

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

/* ---------- 03 通道演进（靛紫） ---------- */
.page-about .about-shift {
  display: grid;
  gap: 18px;
}

.page-about .about-shift__col {
  padding: 22px 20px;
  background: rgba(10, 24, 38, 0.42);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--fb-radius);
}

.page-about .about-shift__col--now {
  border-color: rgba(53, 227, 224, 0.5);
  box-shadow: inset 0 0 0 1px rgba(53, 227, 224, 0.16);
}

.page-about .about-shift__tag {
  display: inline-block;
  margin: 0 0 16px;
  padding: 4px 10px;
  font-family: var(--fb-font-head);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--fb-text-muted);
  border: 1px solid currentColor;
  border-radius: var(--fb-radius);
}

.page-about .about-shift__col--now .about-shift__tag {
  color: var(--fb-cyan);
}

.page-about .about-shift .fb-list__item {
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--fb-text);
}

/* ---------- 04 覆盖与节奏 ---------- */
.page-about .about-coverage__grid {
  display: grid;
  gap: 30px;
}

.page-about .about-coverage__stats {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid var(--fb-hairline);
  border-left: 1px solid var(--fb-hairline);
}

.page-about .about-stat {
  padding: 18px 14px;
  border-right: 1px solid var(--fb-hairline);
  border-bottom: 1px solid var(--fb-hairline);
}

.page-about .about-stat__num {
  display: block;
  font-family: var(--fb-font-num);
  font-size: clamp(24px, 3.6vw, 34px);
  font-weight: 600;
  line-height: 1;
  letter-spacing: -0.01em;
  color: var(--fb-orange);
}

.page-about .about-stat__label {
  display: block;
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--fb-text-muted);
}

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

/* ---------- 05 合作生态（石绿） ---------- */
.page-about .about-partners__cards {
  margin-top: 4px;
}

.page-about .about-partner {
  padding: 26px 22px;
  background: rgba(10, 24, 38, 0.36);
  border: 1px solid rgba(255, 255, 255, 0.13);
  border-radius: var(--fb-radius);
  transition: transform var(--fb-ease), border-color var(--fb-ease);
}

.page-about .about-partner:hover {
  transform: translateY(-2px);
  border-color: var(--fb-cyan);
}

.page-about .about-partner__num {
  margin: 0 0 12px;
  font-size: clamp(34px, 6vw, 48px);
  line-height: 1;
}

.page-about .about-partner__title {
  margin: 0 0 10px;
  font-size: 19px;
}

.page-about .about-partner__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--fb-text-muted);
}

/* ---------- 06 纠错与维护（酒红） ---------- */
.page-about .about-corrections__action {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 34px;
}

.page-about .about-next {
  display: grid;
  border-top: 1px solid rgba(255, 255, 255, 0.18);
}

.page-about .about-next__label {
  margin: 18px 0 6px;
  font-family: var(--fb-font-head);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--fb-text-muted);
}

.page-about .about-next__link {
  display: grid;
  gap: 5px;
  padding: 16px 0;
  color: var(--fb-text);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 255, 255, 0.18);
  transition: padding-left var(--fb-ease), color var(--fb-ease);
}

.page-about .about-next__link:hover,
.page-about .about-next__link:focus-visible {
  padding-left: 10px;
  color: var(--fb-cyan);
}

.page-about .about-next__title {
  font-family: var(--fb-font-head);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.page-about .about-next__desc {
  font-size: 14px;
  line-height: 1.7;
  color: var(--fb-text-muted);
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-about .about-stat {
    padding: 22px 20px;
  }
}

@media (min-width: 780px) {
  .page-about .about-hero {
    padding: 48px 0 64px;
  }

  .page-about .about-head {
    grid-template-columns: 76px minmax(0, 1fr);
    gap: 26px;
    margin-bottom: 48px;
  }

  .page-about .about-role {
    padding: 26px 26px 26px 30px;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    gap: 56px;
    align-items: end;
    padding-top: 36px;
  }

  .page-about .about-toc {
    margin-top: 48px;
  }

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

@media (min-width: 960px) {
  .page-about .about-team__layout {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.08fr);
    gap: 48px;
    align-items: start;
  }

  .page-about .about-coverage__grid {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    gap: 54px;
    align-items: start;
  }
}

@media (min-width: 880px) {
  .page-about .about-flow {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 24px;
    margin-bottom: 46px;
  }

  .page-about .about-shift {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 26px;
  }

  .page-about .about-shift__col {
    padding: 28px 26px;
  }
}
</content>
</invoke>