.page-about {
  --about-glow: 0 0 26px rgba(168, 85, 247, 0.22);
  position: relative;
  display: block;
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  background:
    radial-gradient(110% 55% at 84% -8%, rgba(168, 85, 247, 0.18), transparent 62%),
    radial-gradient(80% 45% at -10% 6%, rgba(56, 189, 248, 0.1), transparent 58%),
    var(--ink);
  overflow-x: hidden;
}

.page-about .about-wrap {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.page-about .about-breadcrumb {
  max-width: var(--shell);
  margin-inline: auto;
  padding: 18px var(--gutter) 0;
  font-size: 0.82rem;
  color: var(--muted);
}

.page-about .about-inline-link {
  color: var(--arcade);
  text-decoration: none;
  border-bottom: 1px dashed rgba(56, 189, 248, 0.55);
  transition: color 160ms ease, border-color 160ms ease;
}

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

/* ---------- 首屏 ---------- */

.page-about .about-hero {
  position: relative;
  isolation: isolate;
  padding-block: clamp(18px, 4vw, 36px) clamp(44px, 8vw, 84px);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    linear-gradient(158deg, rgba(168, 85, 247, 0.24) 0%, rgba(168, 85, 247, 0.05) 44%, transparent 70%),
    repeating-linear-gradient(0deg, rgba(216, 180, 254, 0.05) 0 1px, transparent 1px 6px);
  clip-path: polygon(0 0, 100% 0, 100% 76%, 0 96%);
}

.page-about .about-hero-title {
  margin: 10px 0 20px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.05rem, 8vw, 4.5rem);
  line-height: 1.05;
  letter-spacing: -0.025em;
  color: var(--paper);
}

.page-about .about-hero-accent {
  display: block;
  color: var(--violet-soft);
  text-shadow: 0 0 28px rgba(168, 85, 247, 0.5);
}

.page-about .about-lede {
  max-width: 48ch;
  margin: 0;
  font-size: clamp(1rem, 2.5vw, 1.12rem);
  line-height: 1.8;
  color: var(--muted);
}

.page-about .about-lede strong {
  color: var(--paper);
  font-weight: 800;
}

.page-about .hero-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin: 32px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .hero-stat {
  position: relative;
  padding: 14px 16px 14px 20px;
  background: linear-gradient(150deg, rgba(27, 20, 48, 0.95), rgba(18, 13, 32, 0.9));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-print);
}

.page-about .hero-stat::before {
  content: "";
  position: absolute;
  left: 0;
  top: 12px;
  bottom: 12px;
  width: 3px;
  border-radius: 3px;
  background: var(--violet);
  box-shadow: var(--about-glow);
}

.page-about .hero-stat:nth-child(2)::before { background: var(--arcade); }
.page-about .hero-stat:nth-child(3)::before { background: var(--gold); }
.page-about .hero-stat:nth-child(4)::before { background: var(--mint); }

.page-about .hero-stat-num {
  display: block;
  font-family: var(--font-mono);
  font-size: 1.32rem;
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: 0.01em;
  color: var(--paper);
}

.page-about .hero-stat-label {
  display: block;
  margin-top: 2px;
  font-size: 0.78rem;
  line-height: 1.5;
  color: var(--muted);
}

/* ---------- 板块通用 ---------- */

.page-about .about-block {
  margin-top: clamp(56px, 9vw, 92px);
}

.page-about .about-head {
  margin-bottom: clamp(24px, 4vw, 36px);
}

.page-about .about-head .section-title {
  margin: 8px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.45rem, 4.4vw, 2.25rem);
  line-height: 1.22;
  letter-spacing: -0.015em;
  color: var(--paper);
}

.page-about [data-reveal] {
  transition: opacity 240ms ease, transform 240ms ease;
}

.page-about [data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

/* ---------- 时间线与数据面板 ---------- */

.page-about .about-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
}

.page-about .about-timeline {
  position: relative;
  margin: 0;
  padding: 0 0 0 26px;
  list-style: none;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--violet), var(--arcade) 58%, var(--line));
}

.page-about .timeline-item {
  position: relative;
  padding-bottom: 26px;
}

.page-about .timeline-item:last-child {
  padding-bottom: 0;
}

.page-about .timeline-item::before {
  content: "";
  position: absolute;
  left: -26px;
  top: 9px;
  width: 11px;
  height: 11px;
  border-radius: 2px;
  background: var(--ink);
  border: 2px solid var(--violet);
  box-shadow: 0 0 12px rgba(168, 85, 247, 0.55);
  transform: rotate(45deg);
}

.page-about .timeline-tag {
  display: inline-block;
  margin-bottom: 7px;
  padding: 2px 9px;
  font-size: 0.74rem;
  letter-spacing: 0.04em;
  color: var(--violet-soft);
  background: rgba(168, 85, 247, 0.14);
  border: 1px solid rgba(168, 85, 247, 0.42);
  border-radius: 4px;
}

.page-about .timeline-title {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 1.06rem;
  font-weight: 800;
  line-height: 1.45;
  color: var(--paper);
}

.page-about .timeline-item p {
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.78;
  color: var(--muted);
}

.page-about .about-dash {
  align-self: start;
  padding: 20px;
  background: linear-gradient(160deg, rgba(27, 20, 48, 0.96), rgba(18, 13, 32, 0.94));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-print);
}

.page-about .dash-title {
  margin: 0 0 14px;
  padding-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--gold);
  border-bottom: 1px dashed var(--line);
}

.page-about .dash-list {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .dash-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.page-about .dash-num {
  font-family: var(--font-mono);
  font-size: 1.48rem;
  font-weight: 700;
  line-height: 1.15;
  color: var(--violet-soft);
}

.page-about .dash-label {
  font-size: 0.79rem;
  line-height: 1.5;
  color: var(--muted);
}

.page-about .dash-foot {
  margin: 16px 0 0;
  padding-top: 12px;
  font-size: 0.79rem;
  line-height: 1.65;
  color: var(--muted);
  border-top: 1px dashed var(--line);
}

/* ---------- 团队 ---------- */

.page-about .about-team-figure {
  margin: 0 0 clamp(22px, 4vw, 34px);
}

.page-about .about-team-figure img,
.page-about .about-flow-figure img,
.page-about .about-network-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}

.page-about .team-matrix {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-about .team-cell {
  padding: 20px 18px 18px;
  background: linear-gradient(170deg, rgba(27, 20, 48, 0.9), rgba(18, 13, 32, 0.86));
  border: 1px solid var(--line);
  border-top: 4px solid var(--violet);
  border-radius: var(--radius);
}

.page-about .team-cell--review { border-top-color: var(--arcade); }
.page-about .team-cell--service { border-top-color: var(--gold); }

.page-about .team-count {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 1.9rem;
  font-weight: 700;
  line-height: 1;
  color: var(--paper);
}

.page-about .team-count small {
  margin-left: 4px;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--muted);
}

.page-about .team-role {
  margin: 10px 0 8px;
  font-family: var(--font-display);
  font-size: 1.04rem;
  font-weight: 800;
  letter-spacing: 0.02em;
  color: var(--paper);
}

.page-about .team-cell p {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 生产流程 ---------- */

.page-about .flow-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.page-about .flow-steps {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .flow-step {
  display: flex;
  gap: 14px;
  padding: 16px;
  background: linear-gradient(118deg, rgba(251, 191, 36, 0.09), rgba(21, 16, 36, 0.9) 44%);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.page-about .flow-num {
  flex: none;
  align-self: flex-start;
  padding: 1px 9px;
  font-size: 0.98rem;
  font-weight: 700;
  line-height: 1.6;
  color: var(--gold);
  border: 1px solid rgba(251, 191, 36, 0.45);
  border-radius: 6px;
  background: rgba(251, 191, 36, 0.08);
}

.page-about .flow-body h3 {
  margin: 0 0 4px;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 800;
  line-height: 1.5;
  color: var(--paper);
}

.page-about .flow-body p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--muted);
}

.page-about .about-flow-figure {
  margin: 0;
  align-self: start;
}

/* ---------- 更新节奏 ---------- */

.page-about .rhythm-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-about .rhythm-card {
  padding: 20px 18px;
  background: rgba(21, 16, 36, 0.86);
  border: 1px solid var(--line);
  border-left: 4px solid var(--arcade);
  border-radius: var(--radius);
}

.page-about .rhythm-card:nth-child(2) { border-left-color: var(--violet); }
.page-about .rhythm-card:nth-child(3) { border-left-color: var(--mint); }

.page-about .rhythm-cadence {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--arcade);
}

.page-about .rhythm-card:nth-child(2) .rhythm-cadence { color: var(--violet-soft); }
.page-about .rhythm-card:nth-child(3) .rhythm-cadence { color: var(--mint); }

.page-about .rhythm-title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 1.02rem;
  font-weight: 800;
  line-height: 1.5;
  color: var(--paper);
}

.page-about .rhythm-card p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--muted);
}

.page-about .version-note {
  margin-top: 18px;
  padding: 22px 20px;
  border: 1px solid rgba(168, 85, 247, 0.42);
  border-radius: var(--radius);
  background: linear-gradient(118deg, rgba(168, 85, 247, 0.2), rgba(18, 13, 32, 0.95) 62%);
}

.page-about .version-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 14px;
  margin-bottom: 10px;
}

.page-about .version-code {
  margin: 0;
  padding: 2px 9px;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--gold);
  border: 1px solid rgba(251, 191, 36, 0.45);
  border-radius: 4px;
}

.page-about .version-title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.08rem;
  font-weight: 800;
  line-height: 1.5;
  color: var(--paper);
}

.page-about .version-copy {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.8;
  color: var(--muted);
}

.page-about .version-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin-top: 16px;
}

.page-about .version-stat {
  padding: 10px 12px;
  border: 1px dashed rgba(216, 180, 254, 0.35);
  border-radius: 8px;
}

.page-about .version-stat-num {
  display: block;
  font-family: var(--font-mono);
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--violet-soft);
}

.page-about .version-stat-label {
  display: block;
  margin-top: 2px;
  font-size: 0.74rem;
  line-height: 1.45;
  color: var(--muted);
}

/* ---------- 共建网络 ---------- */

.page-about .network-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

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

.page-about .network-copy {
  margin: 0 0 18px;
  font-size: 0.94rem;
  line-height: 1.8;
  color: var(--muted);
}

.page-about .network-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.page-about .network-stat {
  padding: 14px 12px;
  background: rgba(94, 234, 212, 0.06);
  border: 1px dashed rgba(94, 234, 212, 0.34);
  border-radius: var(--radius);
}

.page-about .network-stat-num {
  display: block;
  font-family: var(--font-mono);
  font-size: 1.42rem;
  font-weight: 700;
  line-height: 1.2;
  color: var(--mint);
}

.page-about .network-stat-label {
  display: block;
  margin-top: 2px;
  font-size: 0.78rem;
  line-height: 1.5;
  color: var(--muted);
}

.page-about .region-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
}

/* ---------- 里程碑 ---------- */

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

.page-about .mile-item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 14px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.page-about .mile-tag {
  align-self: start;
  padding: 3px 10px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  white-space: nowrap;
  color: var(--ink);
  background: var(--gold);
  border-radius: 999px;
}

.page-about .mile-item:nth-child(2) .mile-tag { background: var(--arcade); }
.page-about .mile-item:nth-child(3) .mile-tag { background: var(--violet-soft); }
.page-about .mile-item:nth-child(4) .mile-tag { background: var(--mint); }

.page-about .mile-body h3 {
  margin: 0 0 5px;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 800;
  line-height: 1.5;
  color: var(--paper);
}

.page-about .mile-body p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 联系 ---------- */

.page-about .about-contact {
  margin-bottom: clamp(56px, 9vw, 96px);
}

.page-about .about-contact-panel {
  position: relative;
  padding: clamp(24px, 5vw, 46px);
  border: 1px solid rgba(216, 180, 254, 0.38);
  border-radius: 14px;
  overflow: hidden;
  background:
    radial-gradient(120% 130% at 100% 0%, rgba(56, 189, 248, 0.2), transparent 56%),
    linear-gradient(135deg, rgba(168, 85, 247, 0.4), rgba(21, 16, 36, 0.97) 64%);
  box-shadow: var(--shadow-print);
}

.page-about .contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
}

.page-about .contact-copy .section-title {
  margin: 8px 0 12px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.35rem, 4vw, 2rem);
  line-height: 1.25;
  color: var(--paper);
}

.page-about .contact-copy > p {
  margin: 0;
  font-size: 0.93rem;
  line-height: 1.8;
  color: rgba(248, 245, 255, 0.78);
}

.page-about .contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 20px;
}

.page-about .contact-list {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .contact-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 12px;
  padding: 12px 14px;
  background: rgba(11, 8, 20, 0.5);
  border: 1px solid rgba(216, 180, 254, 0.24);
  border-radius: var(--radius);
}

.page-about .contact-label {
  flex: none;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  color: var(--violet-soft);
}

.page-about .contact-value {
  flex: 1 1 12ch;
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--paper);
  word-break: break-word;
}

.page-about .contact-note {
  margin: 20px 0 0;
  padding-top: 14px;
  font-size: 0.8rem;
  line-height: 1.7;
  color: rgba(155, 147, 176, 0.95);
  border-top: 1px dashed rgba(216, 180, 254, 0.3);
}

/* ---------- 响应式 ---------- */

@media (min-width: 640px) {
  .page-about .team-matrix {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .page-about .rhythm-card:last-child {
    grid-column: 1 / -1;
  }
}

@media (min-width: 768px) {
  .page-about .about-hero-title {
    transform: rotate(-1.4deg);
    transform-origin: left center;
  }

  .page-about .hero-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .flow-grid {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr);
    align-items: start;
    gap: 32px;
  }

  .page-about .rhythm-card:last-child {
    grid-column: auto;
  }

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

  .page-about .contact-grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
    align-items: start;
    gap: 32px;
  }
}

@media (min-width: 900px) {
  .page-about .about-split {
    grid-template-columns: minmax(0, 1.65fr) minmax(0, 1fr);
    gap: 44px;
    align-items: start;
  }

  .page-about .about-dash {
    position: sticky;
    top: 96px;
  }

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

  .page-about .network-split {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
    align-items: center;
    gap: 36px;
  }

  .page-about .mile-item {
    grid-template-columns: 132px 1fr;
    gap: 22px;
    padding: 22px 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about [data-reveal],
  .page-about [data-reveal].is-visible {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .page-about .about-hero-title {
    transform: none;
  }
}