.page-about {
  --ab-gap: clamp(56px, 9vw, 116px);
  --ab-radius: 2px;
  background: var(--c-night);
  color: var(--c-paper);
  overflow-x: clip;
}

/* ---------- 面包屑 ---------- */
.page-about .breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding-top: clamp(18px, 3vw, 30px);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--c-steel);
}

.page-about .breadcrumbs__item {
  color: var(--c-steel);
  text-decoration: none;
}

.page-about a.breadcrumbs__item:hover,
.page-about a.breadcrumbs__item:focus-visible {
  color: var(--c-fluo);
}

.page-about .breadcrumbs__sep {
  color: var(--c-mist);
}

/* ---------- 首屏框景 ---------- */
.page-about .about-hero {
  padding-top: clamp(18px, 3vw, 34px);
}

.page-about .about-hero__frame {
  position: relative;
  border: 1px solid var(--line);
  border-radius: var(--ab-radius);
  background:
    radial-gradient(130% 92% at 8% 0%, rgba(18, 58, 92, .66), transparent 60%),
    var(--c-glass);
  padding: clamp(20px, 3.4vw, 50px);
}

.page-about .about-hero__frame::before,
.page-about .about-hero__frame::after {
  content: "";
  position: absolute;
  width: 18px;
  height: 18px;
  border: 1px solid var(--c-saffron);
  pointer-events: none;
}

.page-about .about-hero__frame::before {
  top: -1px;
  left: -1px;
  border-right: 0;
  border-bottom: 0;
}

.page-about .about-hero__frame::after {
  right: -1px;
  bottom: -1px;
  border-top: 0;
  border-left: 0;
}

.page-about .about-hero__top {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px 20px;
  padding-bottom: 16px;
  margin-bottom: clamp(20px, 3vw, 34px);
  border-bottom: 1px solid var(--line-soft);
}

.page-about .about-hero__ver {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--c-fluo);
}

.page-about .about-hero__body {
  display: grid;
  gap: clamp(26px, 4vw, 48px);
}

.page-about .about-hero__lede h1 {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(30px, 6.4vw, 56px);
  line-height: 1.14;
  letter-spacing: -.015em;
  color: var(--c-paper);
}

.page-about .about-hero__lede .lead {
  margin: 0;
  max-width: 48ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.85;
  color: var(--c-steel);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 3vw, 32px);
}

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

.page-about .about-hero__figure .figure__frame {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--ab-radius);
  aspect-ratio: 14 / 9;
  background: var(--c-ink);
}

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

.page-about .about-hero__figure .figure__caption {
  margin-top: 12px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--c-steel);
}

.page-about .about-hero__ticks {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px 16px;
  margin: clamp(28px, 4vw, 46px) 0 0;
  padding: clamp(18px, 2.6vw, 28px) 0 0;
  border-top: 1px solid var(--line-soft);
  list-style: none;
}

.page-about .about-hero__tick-num {
  display: block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(22px, 3.4vw, 32px);
  letter-spacing: -.02em;
  color: var(--c-fluo);
}

.page-about .about-hero__tick-label {
  display: block;
  margin-top: 8px;
  font-size: 13px;
  line-height: 1.55;
  color: var(--c-steel);
}

/* ---------- 通用区块头 ---------- */
.page-about .ab-head {
  display: grid;
  gap: 16px;
  margin-bottom: clamp(28px, 4vw, 48px);
}

.page-about .ab-head .section-title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(24px, 4vw, 38px);
  line-height: 1.22;
  letter-spacing: -.012em;
  color: var(--c-paper);
}

.page-about .ab-head__note {
  margin: 0;
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--c-steel);
}

/* ---------- 定位与服务范围 ---------- */
.page-about .about-scope {
  padding-top: var(--ab-gap);
}

.page-about .ab-columns {
  display: grid;
  gap: clamp(28px, 4vw, 44px);
}

.page-about .ab-column--panel {
  position: relative;
  padding: clamp(20px, 3vw, 32px);
  border: 1px solid var(--line);
  border-radius: var(--ab-radius);
  background: linear-gradient(180deg, rgba(18, 58, 92, .48), rgba(7, 16, 31, .28));
}

.page-about .ab-column__title {
  margin: 0 0 22px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(16px, 1.9vw, 19px);
  letter-spacing: .01em;
  color: var(--c-paper);
}

.page-about .ab-list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line-soft);
}

.page-about .ab-list__item {
  display: grid;
  gap: 8px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-about .ab-list__term {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 16px;
  color: var(--c-paper);
}

.page-about .ab-list__desc {
  font-size: 14px;
  line-height: 1.8;
  color: var(--c-steel);
}

.page-about .ab-steps {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: abstep;
}

.page-about .ab-steps__item {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 4px 14px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line-soft);
}

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

.page-about .ab-steps__idx {
  grid-row: span 2;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--c-saffron);
  padding-top: 2px;
}

.page-about .ab-steps__name {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 16px;
  color: var(--c-paper);
}

.page-about .ab-steps__desc {
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--c-steel);
}

/* ---------- 发展历程时间轴 ---------- */
.page-about .about-history {
  padding-top: var(--ab-gap);
  padding-bottom: var(--ab-gap);
}

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

.page-about .timeline__row {
  position: relative;
  padding: 0 0 clamp(28px, 4vw, 44px) 26px;
  border-left: 1px solid var(--line-soft);
}

.page-about .timeline__row:last-child {
  padding-bottom: 0;
  border-left-color: transparent;
}

.page-about .timeline__row::before {
  content: "";
  position: absolute;
  top: 6px;
  left: -5px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--c-saffron);
}

.page-about .timeline__row--now::before {
  background: var(--c-fluo);
  box-shadow: 0 0 0 4px rgba(217, 242, 74, .16);
}

.page-about .timeline__ver {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .16em;
  color: var(--c-fluo);
}

.page-about .timeline__row--now .timeline__ver {
  padding: 2px 8px;
  background: rgba(217, 242, 74, .12);
  border: 1px solid rgba(217, 242, 74, .38);
}

.page-about .timeline__title {
  margin: 10px 0 8px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(17px, 2.2vw, 21px);
  line-height: 1.35;
  color: var(--c-paper);
}

.page-about .timeline__text {
  margin: 0;
  max-width: 62ch;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--c-steel);
}

/* ---------- 团队与分工 ---------- */
.page-about .about-team {
  padding-top: var(--ab-gap);
}

.page-about .about-team__grid {
  display: grid;
  gap: clamp(28px, 4vw, 46px);
}

.page-about .about-team__folds {
  min-width: 0;
}

.page-about .about-team__note {
  display: grid;
  gap: 6px;
  margin: 24px 0 0;
  padding: 16px 18px;
  border-left: 2px solid var(--c-saffron);
  background: rgba(232, 106, 51, .07);
  font-size: 14px;
  line-height: 1.8;
  color: var(--c-steel);
}

.page-about .about-team__note-key {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--c-saffron);
}

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

.page-about .about-team__figure .figure__frame {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--ab-radius);
  aspect-ratio: 3 / 2;
  background: var(--c-ink);
}

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

.page-about .about-team__figure .figure__caption {
  margin-top: 12px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--c-steel);
}

/* ---------- 覆盖与合作 ---------- */
.page-about .about-coverage {
  padding-top: var(--ab-gap);
  padding-bottom: var(--ab-gap);
}

.page-about .coverage-grid {
  display: grid;
  gap: clamp(28px, 4vw, 46px);
}

.page-about .coverage-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
}

.page-about .coverage-stat {
  position: relative;
  padding: clamp(16px, 2.4vw, 24px) clamp(14px, 2vw, 22px);
  background: var(--c-ink);
}

.page-about .coverage-stat__num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(24px, 3.4vw, 32px);
  letter-spacing: -.02em;
  color: var(--c-fluo);
}

.page-about .coverage-stat__unit {
  margin-left: 4px;
  font-size: 13px;
  color: var(--c-saffron);
}

.page-about .coverage-stat__label {
  display: block;
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.65;
  color: var(--c-steel);
}

.page-about .coverage-figure {
  margin: 0;
}

.page-about .coverage-figure .figure__frame {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--ab-radius);
  aspect-ratio: 3 / 2;
  background: var(--c-night);
}

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

.page-about .coverage-figure .figure__caption {
  margin-top: 12px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--c-steel);
}

/* ---------- 行业认可 ---------- */
.page-about .about-awards {
  padding-top: var(--ab-gap);
}

.page-about .award-list {
  display: grid;
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
}

.page-about .award {
  display: grid;
  gap: 8px;
  padding: clamp(20px, 3vw, 32px);
  background: var(--c-night);
}

.page-about .award--paper {
  background: var(--c-paper);
  color: var(--c-ink);
}

.page-about .award__year {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--c-saffron);
}

.page-about .award--paper .award__year {
  color: #B14E1F;
}

.page-about .award__name {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(17px, 2.2vw, 21px);
  line-height: 1.35;
  color: var(--c-paper);
}

.page-about .award--paper .award__name {
  color: var(--c-ink);
}

.page-about .award__desc {
  margin: 0;
  max-width: 56ch;
  font-size: 14px;
  line-height: 1.8;
  color: var(--c-steel);
}

.page-about .award--paper .award__desc {
  color: #3B4A5C;
}

/* ---------- 收束 ---------- */
.page-about .about-next {
  padding-top: var(--ab-gap);
  padding-bottom: clamp(48px, 8vw, 96px);
}

.page-about .about-next__inner {
  display: grid;
  gap: clamp(24px, 3.4vw, 40px);
  padding: clamp(24px, 3.6vw, 44px);
  border: 1px solid var(--line);
  border-radius: var(--ab-radius);
  background:
    linear-gradient(120deg, rgba(18, 58, 92, .62), rgba(7, 16, 31, .34));
}

.page-about .about-next__title {
  margin: 12px 0 12px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(22px, 3.4vw, 32px);
  line-height: 1.25;
  letter-spacing: -.012em;
  color: var(--c-paper);
}

.page-about .about-next__text {
  margin: 0;
  max-width: 52ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--c-steel);
}

.page-about .about-next__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-content: start;
}

/* ---------- 平板 ---------- */
@media (min-width: 760px) {
  .page-about .about-hero__ticks {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 24px 20px;
  }

  .page-about .ab-list__item {
    grid-template-columns: minmax(0, 200px) minmax(0, 1fr);
    align-items: start;
    gap: 0 24px;
  }

  .page-about .award {
    grid-template-columns: 120px minmax(0, 1fr);
    align-items: start;
    gap: 6px 24px;
  }

  .page-about .award__desc {
    grid-column: 2;
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 900px) {
  .page-about .about-hero__body {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    align-items: start;
  }

  .page-about .ab-head {
    grid-template-columns: minmax(0, 460px) minmax(0, 1fr);
    align-items: end;
    gap: 24px 48px;
  }

  .page-about .ab-head__note {
    padding-bottom: 6px;
  }

  .page-about .ab-columns {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-about .timeline {
    display: grid;
    gap: 0;
  }

  .page-about .timeline__row {
    padding-left: 40px;
  }

  .page-about .timeline__row::before {
    top: 5px;
    left: -6px;
    width: 11px;
    height: 11px;
  }

  .page-about .about-team__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
    align-items: start;
  }

  .page-about .coverage-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: start;
  }

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

  .page-about .award-list {
    background: transparent;
    border: 0;
    gap: 0;
  }

  .page-about .award {
    grid-template-columns: 140px minmax(0, 1fr);
    gap: 6px 32px;
    padding: 28px 0;
    border-top: 1px solid var(--line-soft);
  }

  .page-about .award--paper {
    padding: 28px 32px;
    background: var(--c-paper);
    border-top-color: transparent;
  }

  .page-about .award__name {
    grid-column: 2;
    grid-row: 1;
  }

  .page-about .award__year {
    grid-column: 1;
    grid-row: 1;
    padding-top: 5px;
  }

  .page-about .award__desc {
    grid-column: 2;
    grid-row: 2;
  }

  .page-about .about-next__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 40px;
  }

  .page-about .about-next__links {
    justify-content: flex-end;
    max-width: 380px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .btn,
  .page-about .timeline__row::before {
    transition: none;
  }
}