/* ===== /who-we-are/ 品牌坐标 ===== */
.page-about {
  --about-pad: clamp(1.25rem, 4vw, 3rem);
  --about-line: rgba(46, 68, 122, 0.42);
  --about-glow: rgba(61, 255, 136, 0.16);
  position: relative;
  color: var(--text);
  overflow-x: clip;
  padding-bottom: clamp(3rem, 8vw, 6rem);
  background:
    radial-gradient(120% 70% at 88% -12%, rgba(61, 255, 136, 0.12), transparent 62%),
    radial-gradient(85% 60% at 0% 22%, rgba(111, 168, 255, 0.10), transparent 58%),
    var(--ink-0);
}

.page-about .wrap {
  padding-inline: var(--about-pad);
}

.page-about img {
  max-width: 100%;
  height: auto;
  display: block;
}

.page-about .eyebrow {
  color: var(--lime);
}

.page-about .breadcrumb {
  padding: 1.25rem var(--about-pad) 0;
}

/* ---- 首屏 ---- */
.page-about .about-hero {
  display: grid;
  gap: clamp(2rem, 5vw, 3.5rem);
  padding-top: clamp(1.5rem, 4vw, 3rem);
  padding-bottom: clamp(2rem, 5vw, 3.5rem);
  border-radius: var(--r-lg);
  background-image:
    linear-gradient(to right, var(--about-line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--about-line) 1px, transparent 1px);
  background-size: 72px 72px;
  background-position: -1px -1px;
}

.page-about .about-title {
  margin: 0.75rem 0 0;
  font-family: var(--font-sans);
  font-weight: 250;
  font-size: clamp(2.7rem, 9vw, 6.8rem);
  line-height: 0.96;
  letter-spacing: -0.04em;
  text-wrap: balance;
}

.page-about .about-title .title-line {
  display: block;
  font-weight: 200;
  color: var(--lime);
}

.page-about .about-lede {
  margin: clamp(1.25rem, 3vw, 1.75rem) 0 0;
  max-width: 48ch;
  color: var(--muted);
  font-size: clamp(1rem, 0.6vw + 0.9rem, 1.125rem);
  line-height: 1.85;
}

.page-about .chapter-preview {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: clamp(1.5rem, 3vw, 2rem);
}

.page-about .chapter-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.55rem 1rem;
  border: 1px solid var(--ink-3);
  border-radius: var(--r-pill);
  background: rgba(17, 29, 61, 0.6);
  color: var(--text);
  font-size: 0.8125rem;
  letter-spacing: 0.06em;
  text-decoration: none;
  transition: border-color 0.25s ease, background-color 0.25s ease, transform 0.25s ease;
}

.page-about .chapter-pill .mono {
  color: var(--lime);
  font-size: 0.75rem;
}

.page-about .chapter-pill:hover,
.page-about .chapter-pill:focus-visible {
  border-color: var(--lime);
  background: var(--about-glow);
  transform: translateY(-2px);
}

.page-about .hero-figure {
  margin: 0;
  aspect-ratio: 4 / 3;
  border: 1px solid var(--ink-3);
  border-radius: var(--r-lg);
  overflow: hidden;
}

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

/* ---- 阶段轴线 ---- */
.page-about .axis-band {
  padding-block: clamp(2.5rem, 6vw, 4.5rem);
}

.page-about .band-head {
  max-width: 60ch;
}

.page-about .band-head h2 {
  margin: 0.7rem 0 0;
  font-size: clamp(1.7rem, 3vw, 2.6rem);
  font-weight: 700;
  line-height: 1.16;
  letter-spacing: -0.01em;
}

.page-about .band-lede {
  margin: 1rem 0 0;
  color: var(--muted);
  line-height: 1.9;
}

.page-about .axis-figure {
  margin: clamp(2rem, 5vw, 3rem) 0 0;
  padding: clamp(0.75rem, 2vw, 1.5rem);
  border: 1px solid var(--ink-3);
  border-radius: var(--r-lg);
  background: linear-gradient(160deg, var(--ink-1), var(--ink-0));
}

.page-about .axis-svg {
  display: block;
  width: 100%;
  height: auto;
}

.page-about .axis-grid line {
  stroke: var(--ink-3);
  stroke-width: 1;
  opacity: 0.6;
}

.page-about .axis-path {
  fill: none;
  stroke: var(--lime);
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.page-about .axis-nodes circle {
  fill: var(--ink-0);
  stroke: var(--lime);
  stroke-width: 2;
}

.page-about .axis-nodes .node-accent {
  stroke: var(--orange);
  stroke-width: 3;
}

.page-about .axis-labels text {
  fill: var(--muted);
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.14em;
}

.page-about .phase-list {
  list-style: none;
  margin: clamp(2rem, 5vw, 3rem) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

.page-about .phase-item {
  padding: 1.25rem 1.35rem 1.4rem;
  border: 1px solid var(--ink-3);
  border-radius: var(--r-md);
  background: var(--ink-1);
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.page-about .phase-item:hover {
  transform: translateY(-4px);
  border-color: var(--lime);
  box-shadow: 0 20px 42px -26px var(--about-glow);
}

.page-about .phase-no {
  color: var(--lime);
  font-size: 0.8125rem;
  letter-spacing: 0.18em;
}

.page-about .phase-title {
  margin: 0.5rem 0 0;
  font-size: 1.125rem;
  font-weight: 700;
}

.page-about .phase-text {
  margin: 0.5rem 0 0;
  color: var(--muted);
  font-size: 0.9375rem;
  line-height: 1.8;
}

/* ---- 阶段区块通用 ---- */
.page-about .stage {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.25rem, 3vw, 2.5rem);
  padding-top: clamp(2.5rem, 6vw, 4rem);
  padding-bottom: clamp(2.5rem, 6vw, 4rem);
  border-top: 1px solid var(--ink-3);
}

.page-about .stage-index {
  position: relative;
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  padding-left: 1.5rem;
  border-left: 1px solid var(--ink-3);
}

.page-about .stage-index::before {
  content: "";
  position: absolute;
  left: -5px;
  top: 0.4rem;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--lime);
  box-shadow: 0 0 0 4px var(--about-glow);
}

.page-about .stage-no {
  color: var(--lime);
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: 0.08em;
}

.page-about .stage-label {
  color: var(--muted);
  font-size: 0.8125rem;
  letter-spacing: 0.16em;
}

.page-about .stage-body h2 {
  margin: 0;
  font-size: clamp(1.6rem, 3vw, 2.5rem);
  font-weight: 700;
  line-height: 1.18;
  letter-spacing: -0.015em;
}

.page-about .stage-lede {
  margin: 1rem 0 0;
  color: var(--muted);
  line-height: 1.9;
}

.page-about .stage-link {
  margin: clamp(1.5rem, 3vw, 2rem) 0 0;
}

/* ---- 收益 / 三层内容 / 团队角色 ---- */
.page-about .benefit-grid,
.page-about .layer-grid,
.page-about .role-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin-top: clamp(1.5rem, 3vw, 2.25rem);
}

.page-about .benefit-card,
.page-about .layer-card,
.page-about .role-card {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  height: 100%;
  padding: 1.35rem 1.4rem 1.5rem;
  border: 1px solid var(--ink-3);
  border-radius: var(--r-md);
  background: linear-gradient(180deg, var(--ink-1), var(--ink-0));
}

.page-about .layer-card--accent {
  border-color: rgba(255, 154, 61, 0.5);
}

.page-about .card-title {
  margin: 0;
  font-size: 1.0625rem;
  font-weight: 700;
  line-height: 1.4;
}

.page-about .card-text {
  margin: 0;
  color: var(--muted);
  font-size: 0.9375rem;
  line-height: 1.8;
}

.page-about .layer-meta {
  margin: auto 0 0;
  padding-top: 0.75rem;
  border-top: 1px dashed var(--ink-3);
  color: var(--link);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
}

/* ---- 团队 ---- */
.page-about .team-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.25rem, 3vw, 2rem);
  margin-top: clamp(1.5rem, 3vw, 2.25rem);
}

.page-about .team-figure {
  margin: 0;
  aspect-ratio: 10 / 7;
  border: 1px solid var(--ink-3);
  border-radius: var(--r-md);
  overflow: hidden;
}

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

.page-about .team-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 0.85rem;
}

.page-about .team-stats .stat {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  padding: 1rem 1.1rem;
  border: 1px solid var(--ink-3);
  border-radius: var(--r-sm);
  background: var(--ink-1);
}

.page-about .team-stats .stat-value {
  color: var(--lime);
  font-size: 1.9rem;
  font-weight: 700;
  line-height: 1;
}

.page-about .team-stats .stat-label {
  color: var(--muted);
  font-size: 0.8125rem;
  line-height: 1.6;
}

.page-about .team-note {
  margin: 0.9rem 0 0;
  color: var(--muted);
  font-size: 0.875rem;
  line-height: 1.75;
}

.page-about .role-card {
  transition: border-color 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease;
}

.page-about .role-card:hover,
.page-about .role-card:focus-within {
  border-color: var(--lime);
  transform: translateY(-3px);
  box-shadow: 0 22px 45px -28px var(--about-glow);
}

.page-about .role-name {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--text);
}

.page-about .role-line {
  margin: 0;
  color: var(--muted);
  font-size: 0.875rem;
  line-height: 1.7;
}

.page-about .role-duties {
  display: grid;
  grid-template-rows: 1fr;
  transition: grid-template-rows 0.35s ease;
}

.page-about .role-duties ul {
  min-height: 0;
  overflow: hidden;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .role-duties li {
  position: relative;
  padding-left: 0.9rem;
  margin-top: 0.45rem;
  color: var(--lime-soft);
  font-size: 0.8125rem;
  line-height: 1.7;
}

.page-about .role-duties li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.65rem;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--lime);
}

.page-about .rhythm-title {
  margin: clamp(2rem, 4vw, 2.75rem) 0 0;
  font-size: 1.15rem;
  font-weight: 700;
}

.page-about .rhythm-list {
  list-style: none;
  margin: 1rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.6rem;
}

.page-about .rhythm-item {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr);
  gap: 0.85rem;
  align-items: baseline;
  padding: 0.9rem 1rem;
  border-left: 2px solid var(--ink-3);
  background: var(--ink-1);
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  transition: border-color 0.3s ease, background-color 0.3s ease;
}

.page-about .rhythm-item:hover {
  border-left-color: var(--lime);
  background: var(--ink-2);
}

.page-about .rhythm-key {
  color: var(--orange);
  font-size: 0.8125rem;
  letter-spacing: 0.12em;
}

.page-about .rhythm-text {
  color: var(--muted);
  font-size: 0.9375rem;
  line-height: 1.75;
}

/* ---- 运营地区与联络 ---- */
.page-about .region-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.25rem, 3vw, 2rem);
  margin-top: clamp(1.5rem, 3vw, 2.25rem);
}

.page-about .region-figure {
  margin: 0;
  aspect-ratio: 3 / 2;
  border: 1px solid var(--ink-3);
  border-radius: var(--r-lg) var(--r-sm) var(--r-lg) var(--r-sm);
  overflow: hidden;
}

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

.page-about .coordinate-card {
  margin: 0;
  padding: 1.35rem 1.4rem;
  border: 1px solid var(--ink-3);
  border-radius: var(--r-md);
  background: linear-gradient(200deg, var(--ink-2), var(--ink-1));
}

.page-about .coordinate-row {
  padding: 0.9rem 0;
  border-bottom: 1px dashed var(--ink-3);
}

.page-about .coordinate-row:first-child {
  padding-top: 0;
}

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

.page-about .coordinate-row dt {
  color: var(--lime);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
}

.page-about .coordinate-row dd {
  margin: 0.4rem 0 0;
  color: var(--text);
  font-size: 0.95rem;
  line-height: 1.7;
  word-break: break-word;
}

.page-about .coordinate-row dd.coordinate-note {
  margin-top: 0.35rem;
  color: var(--muted);
  font-size: 0.8125rem;
  line-height: 1.7;
}

/* ---- 结尾 CTA ---- */
.page-about .about-cta {
  margin-top: clamp(1rem, 3vw, 2rem);
  padding-block: clamp(2rem, 5vw, 3.5rem);
  padding-inline: calc(var(--about-pad) + 0.5rem);
  border: 1px solid var(--ink-3);
  border-radius: var(--r-lg);
  background:
    linear-gradient(135deg, rgba(61, 255, 136, 0.10), transparent 55%),
    var(--ink-1);
}

.page-about .about-cta h2 {
  margin: 0.6rem 0 0;
  font-size: clamp(1.5rem, 2.6vw, 2.2rem);
  font-weight: 700;
  line-height: 1.2;
}

.page-about .about-cta-text {
  margin: 0.9rem 0 0;
  max-width: 56ch;
  color: var(--muted);
  line-height: 1.85;
}

.page-about .cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: clamp(1.5rem, 3vw, 2rem);
}

/* ---- 响应式 ---- */
@media (min-width: 700px) {
  .page-about .phase-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (min-width: 900px) {
  .page-about .about-hero {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    align-items: end;
  }

  .page-about .hero-figure {
    aspect-ratio: 4 / 5;
  }

  .page-about .stage {
    grid-template-columns: 150px minmax(0, 1fr);
    gap: clamp(1.5rem, 3vw, 3rem);
  }

  .page-about .stage-index {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.4rem;
    padding-left: 1.35rem;
    align-self: start;
    position: sticky;
    top: calc(var(--header-h) + 2rem);
  }

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

  .page-about .role-duties {
    grid-template-rows: 0fr;
  }

  .page-about .role-card:hover .role-duties,
  .page-about .role-card:focus-within .role-duties,
  .page-about .role-card:focus .role-duties {
    grid-template-rows: 1fr;
  }
}

@media (min-width: 1100px) {
  .page-about .phase-list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

  .page-about .stage {
    grid-template-columns: 170px minmax(0, 1fr);
  }

  .page-about .region-split {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .chapter-pill,
  .page-about .phase-item,
  .page-about .role-card,
  .page-about .role-duties,
  .page-about .rhythm-item {
    transition: none;
  }

  .page-about .chapter-pill:hover,
  .page-about .phase-item:hover,
  .page-about .role-card:hover {
    transform: none;
  }
}