.page-about {
  --about-gap: clamp(20px, 3.5vw, 44px);
}

/* ---------- 首屏 ---------- */

.page-about .ak-crumbs {
  margin-bottom: clamp(22px, 4vw, 40px);
}

.page-about .about-hero {
  padding-top: clamp(22px, 4vw, 44px);
}

.page-about .about-hero__grid {
  display: grid;
  gap: clamp(26px, 4vw, 52px);
  align-items: end;
}

.page-about .about-hero__title {
  font-family: var(--ak-font-display);
  font-weight: 300;
  font-size: clamp(2rem, 6.4vw, 4.2rem);
  line-height: 1.06;
  letter-spacing: -0.025em;
  color: var(--ak-ink);
  margin: 0.18em 0 0.42em;
}

.page-about .about-hero__lead {
  color: var(--ak-ink-soft);
  max-width: 46ch;
  margin: 0;
}

.page-about .about-hero__facts {
  list-style: none;
  margin: clamp(26px, 3.5vw, 38px) 0 0;
  padding: 20px 0 0;
  border-top: 1px solid var(--ak-cream-2);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(110px, 1fr));
  gap: 16px 22px;
}

.page-about .about-hero__num {
  display: block;
  font-family: var(--ak-font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(1.4rem, 4vw, 1.95rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--ak-green);
}

.page-about .about-hero__cap {
  display: block;
  margin-top: 4px;
  font-size: 0.82rem;
  letter-spacing: 0.03em;
  color: var(--ak-sage);
}

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

.page-about .about-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border: var(--ak-line);
  border-radius: var(--ak-radius);
  box-shadow: var(--ak-shadow);
}

.page-about .about-hero__figcap {
  margin-top: 12px;
  font-family: var(--ak-font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: var(--ak-sage);
}

/* ---------- 赛季轨道 ---------- */

.page-about .about-track__title {
  margin: 0.2em 0 0.3em;
}

.page-about .about-track__lead {
  color: var(--ak-ink-soft);
  max-width: 44ch;
  margin: 0;
}

.page-about .about-track__grid {
  display: grid;
  gap: clamp(22px, 3.5vw, 40px);
  margin-top: clamp(26px, 4vw, 46px);
}

.page-about .about-track__railtitle {
  margin: 0 0 12px;
  font-family: var(--ak-font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ak-sage);
}

.page-about .about-track__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 10px;
  overflow-x: auto;
}

.page-about .about-track__list a {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 16px;
  border: 1px solid var(--ak-cream-2);
  border-radius: 999px;
  text-decoration: none;
  white-space: nowrap;
  color: var(--ak-ink-soft);
  transition: color 160ms ease, border-color 160ms ease, background-color 160ms ease;
}

.page-about .about-track__year {
  font-family: var(--ak-font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.page-about .about-track__tag {
  font-size: 0.74rem;
  letter-spacing: 0.1em;
  color: var(--ak-sage);
}

.page-about .about-track__list a:hover,
.page-about .about-track__list a:focus-visible {
  color: var(--ak-ink);
  border-color: var(--ak-teal);
  background: var(--ak-cyan-soft);
}

.page-about .about-track__body {
  display: grid;
  gap: clamp(20px, 3vw, 32px);
}

.page-about .about-mile {
  padding: clamp(22px, 3vw, 34px) clamp(20px, 3vw, 36px);
  background: var(--ak-cream);
  border: var(--ak-line);
  border-radius: var(--ak-radius);
  box-shadow: var(--ak-shadow-sm);
}

.page-about .about-mile__year {
  margin: 0 0 8px;
  font-family: var(--ak-font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(2.3rem, 9vw, 4rem);
  font-weight: 300;
  line-height: 1;
  letter-spacing: -0.045em;
  color: var(--ak-green);
}

.page-about .about-mile__title {
  margin: 0 0 0.5em;
  color: var(--ak-ink);
}

.page-about .about-mile__text {
  margin: 0;
  color: var(--ak-ink-soft);
  line-height: 1.75;
}

/* ---------- 团队 ---------- */

.page-about .about-team__grid {
  display: grid;
  gap: var(--about-gap);
  align-items: center;
}

.page-about .about-team__title {
  margin: 0.2em 0 0.5em;
}

.page-about .about-team__text {
  margin: 0;
  color: var(--ak-ink-soft);
  line-height: 1.75;
  max-width: 46ch;
}

.page-about .about-team__roles {
  list-style: none;
  margin: clamp(22px, 3vw, 32px) 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-about .about-team__roles li {
  display: grid;
  grid-template-columns: 12px minmax(0, 1fr);
  gap: 14px;
  padding-bottom: 13px;
  border-bottom: 1px solid var(--ak-cream-2);
  color: var(--ak-ink-soft);
  line-height: 1.72;
}

.page-about .about-team__roles li::before {
  content: "";
  width: 10px;
  height: 10px;
  margin-top: 0.6em;
  background: var(--ak-cyan);
  border: 2px solid var(--ak-ink);
  border-radius: 2px;
}

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

.page-about .about-team__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border: var(--ak-line);
  border-radius: var(--ak-radius);
  box-shadow: var(--ak-shadow);
}

.page-about .about-team__figcap {
  margin-top: 12px;
  font-family: var(--ak-font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.03em;
  color: var(--ak-sage);
}

/* ---------- 价值主张 ---------- */

.page-about .about-values {
  color: var(--ak-cream);
}

.page-about .about-values__title {
  margin: 0.2em 0 0;
  color: var(--ak-cream);
}

.page-about .about-values__list {
  display: grid;
  gap: clamp(26px, 4vw, 46px);
  margin-top: clamp(28px, 4vw, 48px);
}

.page-about .about-val {
  padding-left: clamp(18px, 2.5vw, 28px);
  border-left: 4px solid var(--ak-teal);
  transition: border-color 180ms ease;
}

.page-about .about-val:hover {
  border-left-color: var(--ak-cyan);
}

.page-about .about-val__no {
  margin: 0 0 10px;
  font-family: var(--ak-font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  color: var(--ak-cyan);
}

.page-about .about-val__title {
  margin: 0 0 0.5em;
  color: var(--ak-cream);
  font-weight: 400;
  letter-spacing: 0.02em;
}

.page-about .about-val__text {
  margin: 0 0 0.9em;
  font-size: 1.02rem;
  line-height: 1.7;
  color: var(--ak-cyan-soft);
}

.page-about .about-val__scene {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.8;
  color: rgba(242, 237, 228, 0.68);
}

/* ---------- 长期使用 ---------- */

.page-about .about-habit__title {
  margin: 0.2em 0 0;
}

.page-about .about-habit__grid {
  display: grid;
  gap: var(--about-gap);
  margin-top: clamp(26px, 4vw, 44px);
  align-items: center;
}

.page-about .about-habit__steps {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: habit;
  display: grid;
  gap: 18px;
}

.page-about .about-habit__steps li {
  counter-increment: habit;
  position: relative;
  padding-left: 56px;
  line-height: 1.75;
  color: var(--ak-ink-soft);
}

.page-about .about-habit__steps li::before {
  content: counter(habit, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0;
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border: 2px solid var(--ak-ink);
  border-radius: 999px;
  background: var(--ak-cyan-soft);
  font-family: var(--ak-font-mono);
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--ak-green);
}

.page-about .about-habit__note {
  margin: clamp(22px, 3vw, 30px) 0 0;
  padding-top: 18px;
  border-top: 1px dashed var(--ak-cream-2);
  font-size: 0.92rem;
  line-height: 1.8;
  color: var(--ak-sage);
}

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

.page-about .about-habit__figure img {
  display: block;
  width: 100%;
  max-width: 420px;
  height: auto;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  margin: 0 auto;
  border: var(--ak-line);
  border-radius: var(--ak-radius);
  box-shadow: var(--ak-shadow);
}

.page-about .about-habit__figcap {
  margin: 12px auto 0;
  max-width: 420px;
  font-family: var(--ak-font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.03em;
  color: var(--ak-sage);
}

/* ---------- 更新节奏 ---------- */

.page-about .about-rhythm__title {
  margin: 0.2em 0 0.35em;
}

.page-about .about-rhythm__lead {
  margin: 0;
  color: var(--ak-ink-soft);
  max-width: 48ch;
}

.page-about .about-rhythm__grid {
  display: grid;
  grid-template-columns: 1fr;
  margin: clamp(26px, 4vw, 44px) 0 0;
  border: var(--ak-line);
  border-radius: var(--ak-radius);
  overflow: hidden;
  background: var(--ak-cream);
}

.page-about .about-rhythm__cell {
  padding: clamp(20px, 3vw, 30px);
  border-bottom: 1px solid var(--ak-cream-2);
}

.page-about .about-rhythm__cell:last-child {
  border-bottom: 0;
}

.page-about .about-rhythm__cell dt {
  margin-bottom: 8px;
  font-family: var(--ak-font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  color: var(--ak-sage);
}

.page-about .about-rhythm__cell dd {
  margin: 0;
  font-size: 1rem;
  line-height: 1.72;
  color: var(--ak-ink-soft);
}

.page-about .about-rhythm__num {
  font-family: var(--ak-font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--ak-green);
  margin-right: 2px;
}

.page-about .about-rhythm__more {
  margin: clamp(20px, 3vw, 28px) 0 0;
  font-size: 0.94rem;
  line-height: 1.8;
  color: var(--ak-ink-soft);
}

.page-about .about-rhythm__more a {
  color: var(--ak-teal);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 2px;
}

.page-about .about-rhythm__more a:hover,
.page-about .about-rhythm__more a:focus-visible {
  color: var(--ak-orange);
}

/* ---------- 结尾 ---------- */

.page-about .about-cta__inner {
  display: grid;
  gap: clamp(22px, 3.5vw, 38px);
  align-items: center;
  padding: clamp(26px, 4vw, 46px);
  background: var(--ak-night);
  border: 3px solid var(--ak-cyan);
  border-radius: var(--ak-radius);
  box-shadow: 8px 8px 0 var(--ak-teal);
}

.page-about .about-cta__title {
  margin: 0 0 0.5em;
  color: var(--ak-cream);
}

.page-about .about-cta__text {
  margin: 0;
  font-size: 0.96rem;
  line-height: 1.78;
  color: rgba(242, 237, 228, 0.72);
  max-width: 48ch;
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 响应式 ---------- */

@media (min-width: 700px) {
  .page-about .about-mile {
    width: 90%;
  }

  .page-about .about-mile:nth-child(even) {
    width: 80%;
    margin-left: auto;
  }
}

@media (min-width: 760px) {
  .page-about .about-rhythm__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .about-rhythm__cell:nth-child(odd) {
    border-right: 1px solid var(--ak-cream-2);
  }

  .page-about .about-rhythm__cell:nth-last-child(-n + 2) {
    border-bottom: 0;
  }
}

@media (min-width: 860px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  }

  .page-about .about-track__grid {
    grid-template-columns: 148px minmax(0, 1fr);
    gap: clamp(28px, 4vw, 56px);
  }

  .page-about .about-track__rail {
    position: sticky;
    top: 118px;
    align-self: start;
  }

  .page-about .about-track__list {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    border-left: 2px solid var(--ak-cream-2);
  }

  .page-about .about-track__list a {
    flex-direction: column;
    align-items: flex-start;
    gap: 2px;
    padding: 15px 0 15px 18px;
    border: 0;
    border-radius: 0;
    position: relative;
    background: none;
  }

  .page-about .about-track__list a::before {
    content: "";
    position: absolute;
    left: -2px;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 0;
    background: var(--ak-cyan);
    transition: height 200ms ease;
  }

  .page-about .about-track__list a:hover,
  .page-about .about-track__list a:focus-visible {
    background: none;
    border: 0;
  }

  .page-about .about-track__list a:hover::before,
  .page-about .about-track__list a:focus-visible::before {
    height: 72%;
  }

  .page-about .about-values__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: clamp(22px, 3vw, 38px);
  }
}

@media (min-width: 900px) {
  .page-about .about-team__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
  }

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

  .page-about .about-cta__inner {
    grid-template-columns: minmax(0, 1.5fr) auto;
    gap: clamp(30px, 4vw, 60px);
  }

  .page-about .about-cta__actions {
    flex-direction: column;
    align-items: stretch;
    min-width: 210px;
  }
}

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