.page-about .about-hero {
  padding-top: clamp(20px, 4vw, 48px);
  background:
    radial-gradient(120% 80% at 85% -10%, rgba(56, 225, 214, 0.1), transparent 62%),
    radial-gradient(90% 60% at 0% 100%, rgba(242, 184, 75, 0.06), transparent 60%);
}

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

.page-about .about-hero__body {
  display: flex;
  flex-direction: column;
  gap: 20px;
  min-width: 0;
}

.page-about .about-hero h1 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(34px, 7vw, 58px);
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--mist-100);
  text-wrap: balance;
}

.page-about .about-hero__lead {
  margin: 0;
  max-width: 60ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--slate-400);
}

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

.page-about .about-hero__facts {
  list-style: none;
  margin: 6px 0 0;
  padding: 20px 0 0;
  border-top: 1px solid var(--line-500);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px 18px;
}

.page-about .about-hero__facts li {
  display: flex;
  flex-direction: column;
  gap: 3px;
  min-width: 0;
}

.page-about .about-hero__num {
  font-family: var(--font-mono);
  font-size: 24px;
  line-height: 1.1;
  letter-spacing: 0.02em;
  color: var(--amber-400);
}

.page-about .about-hero__cap {
  font-size: 13px;
  line-height: 1.5;
  color: var(--slate-400);
}

.page-about .about-hero__figure {
  margin: 0;
  position: relative;
  overflow: hidden;
  border-radius: var(--radius);
  background: var(--ink-800);
}

.page-about .about-hero__figure img {
  display: block;
  width: 100%;
  height: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
}

.page-about .about-hero__figure .figure__cap {
  position: absolute;
  left: 14px;
  bottom: 12px;
  right: 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--mist-100);
  text-shadow: 0 1px 6px rgba(7, 17, 31, 0.9);
}

/* 左窄右宽分栏 */
.page-about .about-split {
  display: grid;
  gap: clamp(26px, 4vw, 54px);
  min-width: 0;
}

.page-about .about-split__aside {
  min-width: 0;
  border-left: 1px solid var(--line-500);
  padding-left: 16px;
}

.page-about .about-side__label {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--cyan-400);
}

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

.page-about .about-side__list li {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding-bottom: 10px;
  border-bottom: 1px dashed rgba(40, 64, 90, 0.9);
}

.page-about .about-side__list li:last-child {
  border-bottom: none;
}

.page-about .about-side__k {
  font-family: var(--font-mono);
  font-size: 20px;
  color: var(--amber-400);
  min-width: 46px;
}

.page-about .about-side__v {
  font-size: 13px;
  line-height: 1.5;
  color: var(--slate-400);
}

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

.page-about .about-origin__body h2,
.page-about .about-spaces__head h2,
.page-about .about-team__left h2,
.page-about .about-timeline__body h2,
.page-about .about-partners__head h2,
.page-about .about-next__head h2 {
  margin: 6px 0 16px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(26px, 4.4vw, 38px);
  line-height: 1.16;
  letter-spacing: -0.015em;
  color: var(--mist-100);
}

.page-about .about-origin__quote {
  margin: 24px 0 0;
  padding: 18px 20px;
  border-left: 2px solid var(--amber-400);
  background: var(--ink-800);
  color: var(--mist-100);
  font-size: 16px;
  line-height: 1.75;
}

/* 空间分区 */
.page-about .about-spaces {
  background: linear-gradient(180deg, var(--ink-900) 0%, var(--ink-800) 46%, var(--ink-900) 100%);
}

.page-about .about-spaces__head {
  max-width: 68ch;
  margin-bottom: clamp(22px, 3vw, 36px);
}

.page-about .about-spaces__lead {
  margin: 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--slate-400);
}

.page-about .about-spaces__grid {
  display: grid;
  gap: clamp(24px, 3.4vw, 44px);
  min-width: 0;
}

.page-about .about-space-list {
  list-style: none;
  margin: 0;
  padding: 0;
  min-width: 0;
}

.page-about .about-space {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  gap: 6px 14px;
  padding: 20px 12px 22px;
  border-top: 1px solid var(--line-500);
  transition: background-color 0.25s var(--ease), border-color 0.25s var(--ease);
}

.page-about .about-space:last-child {
  border-bottom: 1px solid var(--line-500);
}

.page-about .about-space__no {
  font-family: var(--font-mono);
  font-size: 22px;
  line-height: 1;
  color: var(--amber-400);
  padding-top: 3px;
}

.page-about .about-space h3 {
  margin: 0 0 6px;
  font-size: 19px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--mist-100);
}

.page-about .about-space p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--slate-400);
}

.page-about .about-space__fit {
  grid-column: 2;
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--cyan-400);
}

.page-about .about-space:hover,
.page-about .about-space:focus-within {
  background: var(--ink-700);
  border-top-color: var(--amber-400);
}

.page-about .about-spaces__figure {
  margin: 0;
  overflow: hidden;
  border-radius: var(--radius);
  border: 1px solid var(--line-500);
  background: var(--ink-700);
}

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

.page-about .about-spaces__figure .figure__cap {
  padding: 12px 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--slate-400);
  border-top: 1px solid var(--line-500);
}

/* 团队 */
.page-about .about-team__grid {
  display: grid;
  gap: clamp(26px, 4vw, 52px);
  min-width: 0;
}

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

.page-about .about-team__lead {
  margin: 0 0 22px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--slate-400);
  max-width: 52ch;
}

.page-about .about-team__figure {
  margin: 0;
  overflow: hidden;
  border-radius: var(--radius);
  border: 1px solid var(--line-500);
}

.page-about .about-team__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 10 / 7;
  object-fit: cover;
}

.page-about .about-team__figure .figure__cap {
  padding: 12px 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--slate-400);
  border-top: 1px solid var(--line-500);
}

.page-about .about-team__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  min-width: 0;
}

.page-about .about-team__item {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 4px 14px;
  padding: 18px 12px 20px;
  border-top: 1px solid var(--line-500);
  transition: background-color 0.25s var(--ease), border-color 0.25s var(--ease);
}

.page-about .about-team__item:last-child {
  border-bottom: 1px solid var(--line-500);
}

.page-about .about-team__no {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--cyan-400);
  padding-top: 6px;
}

.page-about .about-team__item h3 {
  margin: 0;
  font-size: 19px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--mist-100);
}

.page-about .about-team__item p {
  grid-column: 2;
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--slate-400);
}

.page-about .about-team__tag {
  grid-column: 2;
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--amber-400);
}

.page-about .about-team__item:hover {
  background: var(--ink-800);
  border-top-color: var(--amber-400);
}

/* 时间线 */
.page-about .about-timeline-section {
  background: var(--ink-800);
}

.page-about .about-timeline__aside {
  border-left-color: var(--amber-400);
}

.page-about .about-timeline__aside-text {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--slate-400);
}

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

.page-about .about-timeline {
  list-style: none;
  margin: 8px 0 0;
  padding: 0;
}

.page-about .about-timeline__node {
  position: relative;
  padding: 0 0 26px 26px;
  border-left: 1px solid var(--line-500);
}

.page-about .about-timeline__node:last-child {
  border-left-color: transparent;
  padding-bottom: 0;
}

.page-about .about-timeline__node::before {
  content: "";
  position: absolute;
  left: -4px;
  top: 8px;
  width: 7px;
  height: 7px;
  background: var(--cyan-400);
  transform: rotate(45deg);
  transition: background-color 0.25s var(--ease), transform 0.25s var(--ease);
}

.page-about .about-timeline__node:hover::before,
.page-about .about-timeline__node:focus-within::before {
  background: var(--amber-400);
  transform: rotate(45deg) scale(1.4);
}

.page-about .about-timeline__year {
  display: block;
  font-family: var(--font-mono);
  font-size: 26px;
  line-height: 1.1;
  letter-spacing: 0.02em;
  color: var(--amber-400);
}

.page-about .about-timeline__content h3 {
  margin: 6px 0 6px;
  font-size: 18px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--mist-100);
}

.page-about .about-timeline__content p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--slate-400);
  max-width: 60ch;
}

/* 合作生态 */
.page-about .about-partners__head {
  max-width: 70ch;
  margin-bottom: clamp(20px, 3vw, 32px);
}

.page-about .about-partners__lead {
  margin: 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--slate-400);
}

.page-about .about-partner-tags {
  list-style: none;
  margin: 0 0 clamp(22px, 3vw, 34px);
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-about .about-partner-tags li {
  padding: 7px 14px;
  border: 1px solid var(--line-500);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--cyan-400);
  background: var(--ink-800);
}

.page-about .about-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line-500);
  border: 1px solid var(--line-500);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-about .about-stats__cell {
  background: var(--ink-800);
  padding: 20px 16px 22px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
}

.page-about .about-stats__num {
  font-family: var(--font-mono);
  font-size: clamp(24px, 4vw, 34px);
  line-height: 1.1;
  letter-spacing: 0.01em;
  color: var(--amber-400);
}

.page-about .about-stats__label {
  font-size: 13px;
  line-height: 1.55;
  color: var(--slate-400);
}

/* 下一步 */
.page-about .about-next {
  padding-bottom: clamp(48px, 7vw, 96px);
}

.page-about .about-next__head {
  max-width: 62ch;
  margin-bottom: clamp(20px, 3vw, 34px);
}

.page-about .about-next__lead {
  margin: 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--slate-400);
}

.page-about .about-next__grid {
  display: grid;
  gap: 14px;
}

.page-about .about-next__card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 22px 20px 24px;
  background: var(--ink-800);
  border: 1px solid var(--line-500);
  border-radius: var(--radius);
  text-decoration: none;
  color: inherit;
  transition: border-color 0.25s var(--ease), background-color 0.25s var(--ease), transform 0.25s var(--ease);
}

.page-about .about-next__card:hover,
.page-about .about-next__card:focus-visible {
  background: var(--ink-700);
  border-color: var(--amber-400);
}

.page-about .about-next__idx {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--cyan-400);
}

.page-about .about-next__card h3 {
  margin: 0;
  font-size: 20px;
  font-weight: 600;
  color: var(--mist-100);
}

.page-about .about-next__card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--slate-400);
}

.page-about .about-next__go {
  margin-top: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--amber-400);
}

.page-about .about-next__go::after {
  content: " →";
}

@media (min-width: 720px) {
  .page-about .about-hero__facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

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

  .page-about .about-timeline__node {
    display: grid;
    grid-template-columns: 128px minmax(0, 1fr);
    gap: 0 22px;
    padding-left: 28px;
  }

  .page-about .about-timeline__year {
    font-size: 30px;
  }

  .page-about .about-timeline__content h3 {
    margin-top: 0;
  }
}

@media (min-width: 960px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    align-items: start;
  }

  .page-about .about-hero__figure img {
    aspect-ratio: 3 / 4;
  }

  .page-about .about-split {
    grid-template-columns: 250px minmax(0, 1fr);
    align-items: start;
  }

  .page-about .about-split__aside {
    position: sticky;
    top: 32px;
  }

  .page-about .about-spaces__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.92fr);
    align-items: start;
  }

  .page-about .about-spaces__figure {
    position: sticky;
    top: 32px;
  }

  .page-about .about-team__grid {
    grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
    align-items: start;
  }

  .page-about .about-timeline__node {
    grid-template-columns: 160px minmax(0, 1fr);
  }

  .page-about .about-timeline__year {
    font-size: 36px;
  }
}

@media (min-width: 1180px) {
  .page-about .about-hero h1 {
    font-size: 60px;
  }

  .page-about .about-next__card {
    padding: 26px 24px 28px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-space,
  .page-about .about-team__item,
  .page-about .about-next__card,
  .page-about .about-timeline__node::before {
    transition: none;
  }
}