.page-about {
  --ab-gap: 1.5rem;
  --ab-line-strong: #38F2A6;
}

.page-about .ab-hero {
  padding-top: 1.25rem;
}

.page-about .ab-hero .wk-breadcrumb {
  margin-bottom: 1.5rem;
}

.page-about h2 {
  font-family: var(--wk-font-head);
  font-size: clamp(1.5rem, 5vw, 2.25rem);
  line-height: 1.14;
  letter-spacing: -0.01em;
  color: var(--wk-strong);
  margin: 0.5rem 0 1rem;
}

.page-about h3 {
  font-family: var(--wk-font-head);
  font-size: 1.0625rem;
  line-height: 1.3;
  letter-spacing: 0.01em;
  color: var(--wk-strong);
  margin: 0.4rem 0 0.45rem;
}

.page-about p {
  color: var(--wk-text);
}

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

/* ---------- 首屏 ---------- */
.page-about .ab-hero__grid {
  display: grid;
  gap: 2rem;
}

.page-about .ab-hero__copy h1 {
  font-family: var(--wk-font-head);
  font-size: clamp(2rem, 8.5vw, 3.5rem);
  line-height: 1.06;
  letter-spacing: -0.015em;
  color: var(--wk-strong);
  margin: 0.6rem 0 1rem;
}

.page-about .ab-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

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

.page-about .ab-hero__stat {
  background: var(--wk-panel);
  padding: 1rem 1.05rem;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  min-width: 0;
}

.page-about .ab-hero__statnum {
  font-family: var(--wk-font-num);
  font-size: 1.875rem;
  line-height: 1;
  font-weight: 700;
  color: var(--wk-mint);
  font-variant-numeric: tabular-nums;
}

.page-about .ab-hero__statlabel {
  font-size: 0.875rem;
  color: var(--wk-muted);
  line-height: 1.45;
}

/* ---------- 我们做什么 ---------- */
.page-about .ab-what__grid {
  display: grid;
  gap: 1.75rem;
  margin-top: 0.5rem;
}

.page-about .ab-what__intro p {
  margin: 0 0 0.9rem;
  line-height: 1.75;
}

.page-about .ab-what__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.page-about .ab-what__item {
  display: grid;
  grid-template-columns: 2.5rem minmax(0, 1fr);
  column-gap: 0.9rem;
  padding: 1.2rem 0;
  border-top: 1px solid var(--wk-line);
}

.page-about .ab-what__item:last-child {
  border-bottom: 1px solid var(--wk-line);
}

.page-about .ab-what__item h3,
.page-about .ab-what__item p {
  grid-column: 2;
}

.page-about .ab-what__item p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--wk-muted);
}

.page-about .ab-what__idx {
  grid-row: 1 / span 2;
  font-family: var(--wk-font-num);
  font-size: 0.8125rem;
  letter-spacing: 0.08em;
  color: var(--wk-mint);
  padding-top: 0.55rem;
}

/* ---------- 覆盖范围 ---------- */
.page-about .ab-range__grid {
  display: grid;
  gap: 2rem;
}

.page-about .ab-range__side p {
  line-height: 1.75;
  margin: 0 0 0.9rem;
}

.page-about .ab-range__side .wk-note {
  margin-bottom: 1.5rem;
}

.page-about .ab-range__table {
  min-width: 0;
}

.page-about .ab-tablewrap {
  overflow-x: auto;
  padding: 1rem 1rem 1.25rem;
  border: 1px solid var(--wk-paper-2);
}

.page-about .ab-tablewrap .wk-table {
  min-width: 28rem;
  width: 100%;
}

/* ---------- 统计方式 ---------- */
.page-about .ab-method__panel {
  padding: 1.5rem 1.25rem 1.75rem;
  border-left: 3px solid var(--wk-amber);
}

.page-about .ab-method__grid {
  display: grid;
  gap: 1.75rem;
}

.page-about .ab-method__side p {
  line-height: 1.75;
  margin: 0;
}

.page-about .ab-method__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1.5rem;
}

.page-about .ab-method__item {
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--wk-line);
}

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

.page-about .ab-method__item p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.72;
  color: var(--wk-muted);
}

/* ---------- 交付流程 ---------- */
.page-about .ab-flow__grid {
  display: grid;
  gap: 2rem;
}

.page-about .ab-flow__side p {
  line-height: 1.75;
  margin: 0 0 1.5rem;
}

.page-about .ab-flow__steps {
  list-style: none;
  margin: 0;
  padding: 0 0 0 1.4rem;
  border-left: 1px solid var(--wk-line);
  display: grid;
  gap: 1.6rem;
}

.page-about .ab-flow__step {
  position: relative;
  min-width: 0;
}

.page-about .ab-flow__step::before {
  content: "";
  position: absolute;
  left: -1.4rem;
  top: 0.45rem;
  width: 8px;
  height: 8px;
  margin-left: -4.5px;
  background: var(--wk-mint);
  box-shadow: 0 0 0 4px rgba(56, 242, 166, 0.13);
  transition: background 0.16s ease;
}

.page-about .ab-flow__step:hover::before {
  background: var(--wk-amber);
}

.page-about .ab-flow__num {
  font-family: var(--wk-font-num);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: var(--wk-faint);
}

.page-about .ab-flow__step h3 {
  margin: 0.2rem 0 0.35rem;
}

.page-about .ab-flow__step p {
  margin: 0 0 0.6rem;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--wk-muted);
}

.page-about .ab-flow__window {
  display: inline-block;
  font-family: var(--wk-font-num);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: var(--wk-faint);
  border: 1px solid var(--wk-line);
  padding: 0.2rem 0.5rem;
  transition: color 0.16s ease, border-color 0.16s ease;
}

.page-about .ab-flow__step:hover .ab-flow__window {
  color: var(--wk-mint);
  border-color: var(--wk-mint);
}

/* ---------- 团队与积累 ---------- */
.page-about .ab-team__grid {
  display: grid;
  gap: 1.75rem;
  margin-top: 1.75rem;
}

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

.page-about .ab-team__group {
  background: var(--wk-panel);
  padding: 1.1rem 1rem;
  min-width: 0;
}

.page-about .ab-team__group p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--wk-muted);
}

.page-about .ab-team__archive p {
  line-height: 1.75;
  margin: 0 0 1rem;
}

.page-about .ab-archive {
  border: 1px solid var(--wk-line);
  background: var(--wk-night);
  padding: 1rem 1.1rem;
}

.page-about .ab-archive__summary {
  cursor: pointer;
  font-family: var(--wk-font-head);
  font-size: 1.0625rem;
  letter-spacing: 0.01em;
  color: var(--wk-strong);
}

.page-about .ab-archive__summary:focus-visible {
  outline: 2px solid var(--wk-mint);
  outline-offset: 3px;
}

.page-about .ab-archive__list {
  margin: 0.9rem 0 0;
  padding-left: 1.1rem;
  display: grid;
  gap: 0.5rem;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--wk-muted);
}

/* ---------- 合作与使用 ---------- */
.page-about .ab-cases__grid {
  list-style: none;
  margin: 0.5rem 0 0;
  padding: 0;
  display: grid;
  gap: 1.25rem;
}

.page-about .ab-case {
  border: 1px solid var(--wk-line);
  border-top: 2px solid var(--wk-line);
  background: var(--wk-panel);
  padding: 1.25rem 1.15rem 1.35rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  min-width: 0;
  transition: transform 0.18s ease, border-color 0.18s ease;
}

.page-about .ab-case:hover {
  transform: translateY(-3px);
  border-color: var(--wk-mint);
}

.page-about .ab-case p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.72;
  color: var(--wk-muted);
}

.page-about .ab-case .wk-link {
  margin-top: auto;
}

.page-about .ab-cta {
  margin-top: 2.5rem;
  padding: 1.25rem 1.25rem;
  background: var(--wk-panel-up);
  border-left: 3px solid var(--wk-amber);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.page-about .ab-cta p {
  margin: 0;
  color: var(--wk-strong);
  line-height: 1.6;
}

/* ---------- 桌面端 ---------- */
@media (min-width: 640px) {
  .page-about .ab-team__groups {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-about {
    --ab-gap: 2.5rem;
  }

  .page-about .ab-hero__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    gap: 3rem;
    align-items: end;
  }

  .page-about .ab-hero__copy h1 {
    font-size: clamp(3rem, 5vw, 4rem);
  }

  .page-about .ab-what__grid {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    gap: var(--ab-gap);
    align-items: start;
  }

  .page-about .ab-range__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: var(--ab-gap);
    align-items: start;
  }

  .page-about .ab-method__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: var(--ab-gap);
    align-items: start;
  }

  .page-about .ab-flow__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: var(--ab-gap);
    align-items: start;
  }

  .page-about .ab-team__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: var(--ab-gap);
    align-items: start;
  }

  .page-about .ab-cases__grid {
    grid-template-columns: 2fr 3fr 2fr;
    align-items: start;
  }

  .page-about .ab-case--wide {
    margin-top: 1.5rem;
  }

  .page-about .ab-case:last-child {
    margin-top: 2.75rem;
  }

  .page-about .ab-method__panel {
    padding: 2.25rem 2rem 2.5rem;
  }
}

@media (min-width: 1200px) {
  .page-about .ab-hero__copy h1 {
    font-size: 4.25rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .ab-case,
  .page-about .ab-flow__step::before,
  .page-about .ab-flow__window {
    transition: none;
  }

  .page-about .ab-case:hover {
    transform: none;
  }
}