.page-about {
  --about-track: 2px;
  display: block;
}

/* ---------- 面包屑 ---------- */
.page-about .breadcrumb {
  margin: 0 0 clamp(12px, 2vw, 22px);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  margin-bottom: clamp(32px, 5vw, 64px);
  padding: clamp(26px, 4vw, 52px) clamp(20px, 3.4vw, 44px);
  background:
    linear-gradient(160deg, var(--panel-800) 0%, var(--ink-900) 62%);
  border: 1px solid var(--line-700);
  box-shadow: var(--shadow-hard);
  overflow: hidden;
}

.page-about .about-hero__cut {
  position: absolute;
  inset: auto -8% -42% auto;
  width: 62%;
  height: 130%;
  background: linear-gradient(200deg, rgba(255, 107, 44, .16), rgba(42, 42, 94, .55));
  clip-path: polygon(38% 0, 100% 0, 100% 100%, 0 100%);
  pointer-events: none;
}

.page-about .about-hero__body {
  position: relative;
  z-index: 1;
  max-width: 62ch;
}

.page-about .about-hero__kicker {
  margin: 0 0 14px;
  color: var(--data-400);
}

.page-about .about-hero__title {
  margin: 0 0 clamp(14px, 2vw, 22px);
  font-family: var(--font-display);
  font-size: clamp(30px, 6vw, 62px);
  font-weight: 800;
  line-height: 1.06;
  letter-spacing: -.01em;
  color: var(--paper-050);
}

.page-about .about-hero__accent {
  color: var(--signal-500);
  display: inline-block;
  border-bottom: 4px solid var(--signal-500);
  padding-bottom: 2px;
}

.page-about .about-hero__lede {
  margin: 0 0 clamp(22px, 3vw, 34px);
  font-family: var(--font-body);
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.75;
  color: var(--paper-050);
  max-width: 44ch;
}

.page-about .about-hero__facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(10px, 1.6vw, 16px);
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-hero__facts li {
  padding: 12px 14px;
  background: var(--ink-900);
  border-left: 3px solid var(--data-400);
}

.page-about .about-hero__facts li:nth-child(2) {
  border-left-color: var(--signal-500);
}

.page-about .about-hero__facts li:nth-child(4) {
  border-left-color: var(--card-yellow);
}

.page-about .about-hero__facts .num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(20px, 2.6vw, 28px);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--paper-050);
  line-height: 1.1;
}

.page-about .about-hero__facts em {
  display: block;
  margin-top: 4px;
  font-style: normal;
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--muted-400);
}

/* ---------- 通用区块标题 ---------- */
.page-about .about-section-title {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-size: clamp(24px, 3.4vw, 38px);
  font-weight: 800;
  line-height: 1.14;
  letter-spacing: -.005em;
  color: var(--paper-050);
}

/* ---------- 定位区块 ---------- */
.page-about .about-position__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(18px, 3vw, 34px);
}

.page-about .about-position__main p {
  margin: 0 0 14px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--paper-050);
  max-width: 40ch;
}

.page-about .about-position__note {
  position: relative;
  padding: 16px 16px 16px 22px;
  background: var(--panel-800);
  border-left: 2px solid var(--signal-500);
}

.page-about .about-note__tag {
  display: inline-block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--signal-500);
}

.page-about .about-position__note p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted-400);
}

/* ---------- 时间线 ---------- */
.page-about .about-timeline__head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: clamp(18px, 3vw, 30px);
}

.page-about .about-timeline__intro {
  margin: 0;
  max-width: 36ch;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted-400);
}

.page-about .about-timeline__figure {
  margin: 0 0 clamp(22px, 3.4vw, 40px);
  border: 1px solid var(--line-700);
}

.page-about .tl {
  position: relative;
  margin: 0;
  padding: 0 0 0 30px;
  list-style: none;
}

.page-about .tl::before {
  content: "";
  position: absolute;
  top: 6px;
  bottom: 6px;
  left: 9px;
  width: var(--about-track);
  background: linear-gradient(180deg, var(--signal-500), var(--line-700) 55%, var(--card-red));
}

.page-about .tl__item {
  position: relative;
  margin-bottom: clamp(18px, 2.6vw, 30px);
  padding-left: 6px;
}

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

.page-about .tl__dot {
  position: absolute;
  top: 8px;
  left: -30px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--ink-900);
  border: 2px solid var(--signal-500);
  box-shadow: 0 0 0 4px var(--ink-900);
}

.page-about .tl__item--active .tl__dot {
  background: var(--signal-500);
  border-color: var(--paper-050);
}

.page-about .tl__ver {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--data-400);
}

.page-about .tl__item--active .tl__ver {
  color: var(--signal-500);
}

.page-about .tl__card {
  padding: 16px 18px;
  border-top: 3px solid var(--line-700);
}

.page-about .tl__item--active .tl__card {
  border-top-color: var(--signal-500);
}

.page-about .tl__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: clamp(17px, 2vw, 21px);
  font-weight: 700;
  line-height: 1.3;
  color: var(--paper-050);
}

.page-about .tl__card p {
  margin: 0 0 10px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--paper-050);
}

.page-about .tl__meta {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--muted-400);
}

/* ---------- 编辑室 ---------- */
.page-about .about-room__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(18px, 3vw, 36px);
  align-items: start;
}

.page-about .about-room__figure {
  margin: 0;
  border: 1px solid var(--line-700);
}

.page-about .about-room__text > p {
  margin: 0 0 18px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--paper-050);
  max-width: 42ch;
}

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

.page-about .flow__step {
  display: grid;
  grid-template-columns: 40px 1fr;
  gap: 12px;
  padding: 14px 0;
  border-top: 1px solid var(--line-700);
}

.page-about .flow__step:last-child {
  border-bottom: 1px solid var(--line-700);
}

.page-about .flow__idx {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  color: var(--data-400);
  padding-top: 2px;
}

.page-about .flow__title {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  color: var(--paper-050);
}

.page-about .flow__step p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted-400);
}

/* ---------- 团队 ---------- */
.page-about .about-team__intro {
  margin: 0;
  max-width: 34ch;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted-400);
}

.page-about .about-team__bento {
  margin-top: clamp(18px, 3vw, 28px);
}

.page-about .about-team__block {
  padding: 18px;
  border-top: 3px solid var(--line-700);
  transition: border-color .16s ease, transform .16s ease;
}

.page-about .about-team__block:hover,
.page-about .about-team__block:focus-visible {
  border-top-color: var(--signal-500);
  transform: translateY(-3px);
  outline: none;
}

.page-about .about-team__block--lead {
  border-top-color: var(--signal-500);
  background: linear-gradient(160deg, var(--panel-800), var(--indigo-700));
}

.page-about .about-team__count {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  line-height: 1;
  color: var(--signal-500);
  margin-bottom: 8px;
}

.page-about .about-team__block:not(.about-team__block--lead) .about-team__count {
  color: var(--data-400);
}

.page-about .about-team__role {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  color: var(--paper-050);
}

.page-about .about-team__block p {
  margin: 0 0 10px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--paper-050);
}

.page-about .about-team__kw {
  display: block;
  padding-top: 10px;
  border-top: 1px dashed var(--line-700);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .04em;
  color: var(--muted-400);
}

.page-about .about-team__block--quote {
  display: flex;
  align-items: center;
  border-top-color: var(--card-red);
}

.page-about .about-team__quote {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(16px, 1.9vw, 20px);
  line-height: 1.55;
  font-weight: 600;
  color: var(--paper-050);
}

/* ---------- 纠错 ---------- */
.page-about .about-fix__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(18px, 3vw, 34px);
  align-items: center;
}

.page-about .about-fix__text p {
  margin: 0 0 14px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--paper-050);
  max-width: 40ch;
}

.page-about .about-fix__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}

.page-about .about-fix__figure {
  margin: 0;
  border: 1px solid var(--line-700);
}

/* ---------- 下一步 ---------- */
.page-about .about-next__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(10px, 1.6vw, 16px);
  margin-top: clamp(16px, 2.4vw, 24px);
}

.page-about .about-next__card {
  display: block;
  padding: 18px;
  text-decoration: none;
  color: inherit;
  border-left: 3px solid var(--line-700);
  transition: border-color .16s ease, transform .16s ease;
}

.page-about .about-next__card:hover,
.page-about .about-next__card:focus-visible {
  border-left-color: var(--data-400);
  transform: translateX(3px);
  outline: none;
}

.page-about .about-next__tag {
  display: inline-block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--muted-400);
}

.page-about .about-next__card h3 {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 700;
  color: var(--paper-050);
}

.page-about .about-next__card p {
  margin: 0 0 12px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted-400);
}

.page-about .about-next__go {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .05em;
  color: var(--data-400);
}

/* ---------- 图片自适应 ---------- */
.page-about .media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-about .about-hero__facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

@media (min-width: 768px) {
  .page-about .about-position__grid {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
  }

  .page-about .about-room__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr);
  }

  .page-about .about-fix__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, .95fr);
  }

  .page-about .tl {
    padding-left: 88px;
  }

  .page-about .tl::before {
    left: 19px;
  }

  .page-about .tl__dot {
    left: -78px;
    top: 6px;
    width: 24px;
    height: 24px;
  }

  .page-about .tl__ver {
    position: absolute;
    top: 6px;
    left: -58px;
    margin: 0;
    font-size: 13px;
  }
}

@media (min-width: 1024px) {
  .page-about .about-hero__body {
    max-width: 66ch;
  }

  .page-about .about-position__main p {
    font-size: 17px;
  }

  .page-about .tl__card {
    padding: 20px 24px;
  }

  .page-about .about-team__block {
    padding: 22px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-team__block,
  .page-about .about-next__card {
    transition: none;
  }
}
<<<PAGE_CSS_END>>>