.page-about {
  --about-aside-w: 132px;
  --about-block-pad: clamp(48px, 7vw, 96px);
  background: var(--ink-950);
  color: var(--text-hi);
  position: relative;
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  display: flex;
  align-items: flex-end;
  min-height: clamp(500px, 76vh, 760px);
  border-bottom: 1px solid var(--grid-600);
  overflow: hidden;
}

.page-about .about-hero__media {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.page-about .about-hero__media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 40%;
}

.page-about .about-hero__veil {
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    linear-gradient(180deg, rgba(6, 9, 13, 0.62) 0%, rgba(6, 9, 13, 0.74) 48%, var(--ink-950) 100%),
    linear-gradient(90deg, rgba(6, 9, 13, 0.82) 0%, rgba(6, 9, 13, 0.28) 62%);
}

.page-about .about-hero__inner {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  gap: 18px;
  padding-block: clamp(72px, 12vh, 132px) clamp(40px, 6vh, 72px);
}

.page-about .breadcrumbs {
  margin-bottom: 4px;
}

.page-about .breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .breadcrumb-item {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--text-mid);
}

.page-about .breadcrumb-item + .breadcrumb-item::before {
  content: "/";
  margin-right: 8px;
  color: var(--grid-600);
}

.page-about .breadcrumb-item a {
  color: var(--text-mid);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-about .breadcrumb-item a:hover,
.page-about .breadcrumb-item a:focus-visible {
  color: var(--signal-soft);
  border-bottom-color: var(--signal-soft);
}

.page-about .about-hero__kicker {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0;
  font-family: var(--font-display);
  font-size: 13px;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--text-mid);
}

.page-about .about-hero__kicker .metric {
  color: var(--signal);
}

.page-about .about-hero__title {
  margin: 0;
  max-width: 18ch;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(2rem, 6.4vw, 4.4rem);
  line-height: 1.04;
  letter-spacing: 0.04em;
  color: var(--text-hi);
}

.page-about .about-hero__lead {
  margin: 0;
  max-width: 60ch;
  font-size: clamp(0.95rem, 1.6vw, 1.06rem);
  line-height: 1.8;
  color: var(--text-mid);
}

.page-about .about-hero__quote {
  align-self: flex-start;
  margin-top: 8px;
  padding: 18px 22px;
  border-radius: var(--radius);
  border: 1px solid var(--glass-line);
  background: var(--ink-750);
  backdrop-filter: blur(10px);
  max-width: 460px;
}

.page-about .about-hero__quote p {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: clamp(1rem, 2vw, 1.22rem);
  letter-spacing: 0.04em;
  color: var(--text-hi);
}

.page-about .about-hero__quote .label {
  display: block;
  color: var(--text-mid);
}

/* ---------- 主体画板 ---------- */
.page-about .about-body {
  background: var(--ink-950);
}

.page-about .about-block {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
  padding: var(--about-block-pad) var(--gutter);
  border-bottom: 1px solid var(--grid-600);
  background: var(--ink-850);
}

.page-about .about-block::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.35;
  background-image:
    linear-gradient(var(--grid-600) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-600) 1px, transparent 1px);
  background-size: 96px 96px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.6), transparent 78%);
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.6), transparent 78%);
}

.page-about .about-block > * {
  position: relative;
  z-index: 1;
}

.page-about .about-block__aside {
  display: flex;
  align-items: baseline;
  gap: 14px;
}

.page-about .about-block__tag {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--plateau);
}

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

.page-about .about-title {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(1.7rem, 4.4vw, 2.9rem);
  line-height: 1.1;
  letter-spacing: 0.05em;
  color: var(--text-hi);
}

.page-about .about-block__body p {
  margin: 0 0 1.1em;
  max-width: 68ch;
  font-size: 0.98rem;
  line-height: 1.85;
  color: var(--text-mid);
}

.page-about .about-block__lead {
  max-width: 62ch;
  color: var(--text-hi) !important;
}

.page-about .about-link {
  color: var(--signal-soft);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 138, 92, 0.4);
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

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

/* ---------- 三条坐标 ---------- */
.page-about .axis-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin: 26px 0 30px;
  padding: 0;
  list-style: none;
}

.page-about .axis-card {
  position: relative;
  padding: 22px 20px 20px;
  border: 1px solid var(--grid-600);
  border-radius: var(--radius);
  background: var(--ink-800);
  overflow: hidden;
  transition: transform 0.25s var(--ease), border-color 0.25s var(--ease);
}

.page-about .axis-card::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
}

.page-about .axis-card--time::after {
  background: var(--plateau);
}

.page-about .axis-card--pos::after {
  background: var(--signal);
}

.page-about .axis-card--state::after {
  background: linear-gradient(180deg, var(--teal), var(--amber));
}

.page-about .axis-card:hover {
  transform: translateY(-3px);
  border-color: var(--glass-line);
}

.page-about .axis-card__num {
  display: inline-block;
  margin-bottom: 10px;
  font-size: 1.1rem;
  color: var(--text-mid);
  letter-spacing: 0.2em;
}

.page-about .axis-card__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 1.24rem;
  letter-spacing: 0.06em;
  color: var(--text-hi);
}

.page-about .axis-card__text {
  margin: 0 0 14px !important;
  font-size: 0.92rem !important;
  line-height: 1.8 !important;
  color: var(--text-mid);
}

.page-about .axis-card__meta {
  display: inline-block;
  padding-top: 12px;
  border-top: 1px solid var(--grid-600);
  width: 100%;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--text-mid);
}

/* ---------- 图片容器 ---------- */
.page-about .about-figure {
  margin: 30px 0 0;
  border: 1px solid var(--grid-600);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--ink-950);
}

.page-about .about-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-about .about-figure figcaption {
  padding: 14px 18px;
  border-top: 1px solid var(--grid-600);
  font-size: 0.82rem;
  line-height: 1.7;
  color: var(--text-mid);
}

/* ---------- 版图方阵 ---------- */
.page-about .map-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 6px;
  margin: 26px 0 12px;
  padding: 0;
  list-style: none;
}

.page-about .map-cell {
  display: flex;
  align-items: center;
  justify-content: center;
  aspect-ratio: 1 / 1;
  border: 1px solid var(--grid-600);
  border-radius: 6px;
  background: linear-gradient(160deg, rgba(79, 134, 198, 0.12), rgba(6, 9, 13, 0));
  transition: transform 0.2s var(--ease), border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.page-about .map-cell:hover {
  transform: translateY(-2px);
  border-color: var(--signal);
  background: linear-gradient(160deg, rgba(255, 90, 43, 0.22), rgba(6, 9, 13, 0));
}

.page-about .map-cell__i {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--text-mid);
  font-variant-numeric: tabular-nums;
}

.page-about .map-cell:hover .map-cell__i {
  color: var(--text-hi);
}

.page-about .map-note {
  margin: 0 0 1.6em !important;
  font-size: 0.82rem !important;
  line-height: 1.7 !important;
  color: var(--text-mid);
  padding-left: 12px;
  border-left: 2px solid var(--plateau);
}

/* ---------- 团队条形图 ---------- */
.page-about .team-bars {
  display: grid;
  gap: 20px;
  margin: 26px 0 30px;
  padding: 22px 20px;
  border: 1px solid var(--grid-600);
  border-radius: var(--radius);
  background: var(--ink-800);
}

.page-about .team-bar__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
}

.page-about .team-bar__name {
  font-family: var(--font-display);
  font-size: 1.06rem;
  letter-spacing: 0.08em;
  color: var(--text-hi);
}

.page-about .team-bar__num {
  font-size: 1.5rem;
  color: var(--signal);
}

.page-about .team-bar__track {
  height: 8px;
  border-radius: 999px;
  background: rgba(38, 52, 64, 0.7);
  overflow: hidden;
}

.page-about .team-bar__fill {
  display: block;
  height: 100%;
  width: var(--w, 0%);
  border-radius: 999px;
  transform-origin: left center;
  animation: about-grow 0.9s var(--ease) both;
}

.page-about .team-bar__fill--edit {
  --w: 35.3%;
  background: linear-gradient(90deg, var(--plateau), #7FAEE0);
}

.page-about .team-bar__fill--ops {
  --w: 27.9%;
  background: linear-gradient(90deg, var(--teal), var(--amber));
}

.page-about .team-bar__fill--tech {
  --w: 36.8%;
  background: linear-gradient(90deg, var(--signal-deep), var(--signal));
}

.page-about .team-bar__desc {
  margin: 10px 0 0 !important;
  font-size: 0.84rem !important;
  line-height: 1.72 !important;
  color: var(--text-mid);
}

@keyframes about-grow {
  from { transform: scaleX(0); }
  to { transform: scaleX(1); }
}

/* ---------- 时间轴 ---------- */
.page-about .timeline {
  position: relative;
  margin: 28px 0 0;
  padding: 0 0 0 26px;
  list-style: none;
}

.page-about .timeline::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 8px;
  bottom: 12px;
  width: 1px;
  background: linear-gradient(180deg, var(--signal), var(--plateau) 45%, rgba(38, 52, 64, 0));
}

.page-about .timeline__item {
  position: relative;
  padding-bottom: 30px;
}

.page-about .timeline__item:last-child {
  padding-bottom: 4px;
}

.page-about .timeline__item::before {
  content: "";
  position: absolute;
  left: -26px;
  top: 6px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--ink-950);
  border: 1px solid var(--plateau);
  box-shadow: 0 0 0 3px rgba(79, 134, 198, 0.16);
  transition: border-color 0.25s var(--ease), box-shadow 0.25s var(--ease);
}

.page-about .timeline__item:hover::before {
  border-color: var(--signal);
  box-shadow: 0 0 0 4px rgba(255, 90, 43, 0.2);
}

.page-about .timeline__year {
  display: block;
  margin-bottom: 6px;
  font-size: 1.35rem;
  letter-spacing: 0.1em;
  color: var(--plateau);
  transition: color 0.25s var(--ease);
}

.page-about .timeline__item:hover .timeline__year {
  color: var(--signal);
}

.page-about .timeline__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 1.14rem;
  letter-spacing: 0.05em;
  color: var(--text-hi);
}

.page-about .timeline__body p {
  margin: 0 !important;
  max-width: 58ch;
  font-size: 0.92rem !important;
  line-height: 1.8 !important;
  color: var(--text-mid);
}

/* ---------- 合作 ---------- */
.page-about .partner-list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
  margin: 24px 0 28px;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--grid-600);
}

.page-about .partner-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 8px;
  padding: 20px 0;
  border-bottom: 1px solid var(--grid-600);
}

.page-about .partner-item__key {
  color: var(--signal);
  letter-spacing: 0.18em;
}

.page-about .partner-item__text {
  margin: 0 !important;
  max-width: 64ch;
  font-size: 0.94rem !important;
  line-height: 1.82 !important;
  color: var(--text-mid);
}

/* ---------- 收尾行动带 ---------- */
.page-about .about-cta {
  position: relative;
  border-top: 1px solid var(--grid-600);
  background:
    radial-gradient(120% 160% at 12% 0%, rgba(255, 90, 43, 0.16), transparent 58%),
    var(--ink-850);
}

.page-about .about-cta__inner {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding-block: clamp(48px, 7vw, 84px);
}

.page-about .about-cta .cta-band__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(1.6rem, 4.2vw, 2.6rem);
  line-height: 1.12;
  letter-spacing: 0.05em;
  color: var(--text-hi);
}

.page-about .about-cta .cta-band__text {
  margin: 0;
  max-width: 62ch;
  font-size: 0.96rem;
  line-height: 1.82;
  color: var(--text-mid);
}

.page-about .about-cta .cta-band__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 6px;
}

/* ---------- 桌面端 ---------- */
@media (min-width: 900px) {
  .page-about .about-block {
    grid-template-columns: var(--about-aside-w) minmax(0, 1fr);
    gap: clamp(28px, 4vw, 64px);
  }

  .page-about .about-block__aside {
    flex-direction: column;
    align-items: flex-start;
    gap: 18px;
    align-self: start;
    position: sticky;
    top: 96px;
    padding-right: 22px;
    border-right: 1px solid var(--grid-600);
  }

  .page-about .about-block__tag {
    writing-mode: vertical-rl;
    letter-spacing: 0.32em;
  }

  .page-about .axis-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
  }

  .page-about .map-grid {
    grid-template-columns: repeat(11, minmax(0, 1fr));
    gap: 8px;
  }

  .page-about .partner-item {
    grid-template-columns: 200px minmax(0, 1fr);
    gap: 28px;
    align-items: baseline;
  }

  .page-about .about-cta__inner {
    flex-direction: row;
    align-items: flex-end;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 24px 40px;
  }

  .page-about .about-cta__text-wrap,
  .page-about .about-cta .cta-band__title {
    flex: 1 1 420px;
  }

  .page-about .about-cta .cta-band__actions {
    margin-top: 0;
  }
}

@media (min-width: 1200px) {
  .page-about {
    --about-aside-w: 160px;
  }

  .page-about .about-hero__inner {
    padding-top: clamp(96px, 14vh, 160px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .team-bar__fill {
    animation: none;
  }

  .page-about .axis-card,
  .page-about .map-cell,
  .page-about .timeline__year,
  .page-about .timeline__item::before {
    transition: none;
  }

  .page-about .axis-card:hover,
  .page-about .map-cell:hover {
    transform: none;
  }
}