.page-about {
  --about-axis-w: 236px;
  --about-gap: clamp(24px, 4vw, 52px);
}

/* ---------- hero ---------- */
.page-about .about-hero {
  display: grid;
  gap: clamp(30px, 5vw, 56px);
  padding: clamp(20px, 4vw, 40px) 0 clamp(8px, 2vw, 20px);
}

.page-about .about-hero__eyebrow {
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--cyan);
  margin: 0 0 14px;
}

.page-about .about-hero__title {
  font-size: clamp(30px, 5.1vw, 56px);
  line-height: 1.14;
  letter-spacing: -.02em;
  font-weight: 800;
  color: var(--paper);
  margin: 0 0 18px;
  max-width: 20ch;
}

.page-about .about-hero__lede {
  font-size: 15.5px;
  line-height: 1.72;
  color: var(--text-2);
  max-width: 46ch;
  margin: 0 0 26px;
}

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

.page-about .about-hero__panel {
  position: relative;
  padding: clamp(16px, 2.4vw, 26px);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(120% 90% at 88% 4%, rgba(139, 107, 255, .16), transparent 62%),
    linear-gradient(158deg, rgba(20, 40, 61, .94), rgba(11, 27, 43, .72));
  box-shadow: var(--shadow-1);
  overflow: hidden;
}

.page-about .about-hero__panel::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(124, 138, 154, .09) 1px, transparent 1px),
    linear-gradient(90deg, rgba(124, 138, 154, .09) 1px, transparent 1px);
  background-size: 44px 44px;
  pointer-events: none;
}

.page-about .about-hero__svg {
  position: relative;
  display: block;
  width: 100%;
  height: auto;
}

.page-about .about-figures {
  position: relative;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
}

.page-about .about-figures__item {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 12px 14px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-sm);
  background: rgba(6, 14, 23, .42);
  transition: border-color .24s var(--ease), transform .24s var(--ease);
}

.page-about .about-figures__item:hover {
  border-color: var(--line-cyan);
  transform: translateY(-3px);
}

.page-about .about-figures__num {
  font-size: 24px;
  font-weight: 700;
  line-height: 1.1;
  color: var(--amber);
  letter-spacing: .01em;
}

.page-about .about-figures__suffix {
  font-size: 13px;
  margin-left: 1px;
}

.page-about .about-figures__unit {
  font-size: 12.5px;
  color: var(--paper);
}

.page-about .about-figures__label {
  font-size: 11.5px;
  color: var(--text-3);
}

/* ---------- 发展轨迹：左轴 + 右卡 ---------- */
.page-about .about-wall__intro {
  max-width: 58ch;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--text-2);
  margin: 0;
}

.page-about .about-wall__body {
  display: grid;
  gap: clamp(22px, 3vw, 36px);
  margin-top: clamp(24px, 3.4vw, 40px);
}

.page-about .year-axis {
  position: relative;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 4px 2px 12px;
  scrollbar-width: thin;
}

.page-about .year-axis::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 22px;
  height: 1px;
  background: linear-gradient(90deg, var(--line-cyan), var(--line-violet) 60%, var(--line-soft));
}

.page-about .year-node {
  position: relative;
  flex: 0 0 auto;
  min-width: 148px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 30px 14px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line-soft);
  background: rgba(20, 40, 61, .6);
  text-decoration: none;
  transition: border-color .24s var(--ease), transform .24s var(--ease), background .24s var(--ease);
}

.page-about .year-node::before {
  content: "";
  position: absolute;
  left: 14px;
  top: 17px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--ink);
  border: 1px solid var(--slate);
  transition: background .24s var(--ease), border-color .24s var(--ease);
}

.page-about .year-node:hover,
.page-about .year-node:focus-visible {
  border-color: var(--line-cyan);
  background: rgba(20, 40, 61, .92);
  transform: translateY(-3px);
}

.page-about .year-node:hover::before,
.page-about .year-node:focus-visible::before {
  background: var(--cyan);
  border-color: var(--cyan);
}

.page-about .year-node--now::before {
  background: var(--amber);
  border-color: var(--amber);
}

.page-about .year-node__year {
  font-size: 15px;
  font-weight: 700;
  color: var(--cyan);
  letter-spacing: .04em;
}

.page-about .year-node--now .year-node__year {
  color: var(--amber);
}

.page-about .year-node__text {
  font-size: 12.5px;
  color: var(--text-2);
  line-height: 1.5;
}

.page-about .stage-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-about .stage-card {
  position: relative;
  padding: clamp(18px, 2.4vw, 26px);
  border: 1px solid var(--line);
  border-left: 3px solid var(--line-violet);
  border-radius: var(--radius-md);
  background: linear-gradient(150deg, rgba(20, 40, 61, .78), rgba(11, 27, 43, .5));
  transition: border-color .28s var(--ease), box-shadow .28s var(--ease);
}

.page-about .stage-card:target,
.page-about .stage-card:hover {
  border-left-color: var(--cyan);
  box-shadow: var(--shadow-1);
}

.page-about .stage-card__index {
  font-size: 11.5px;
  letter-spacing: .08em;
  color: var(--slate);
  margin: 0 0 8px;
}

.page-about .stage-card__title {
  font-size: clamp(17px, 2vw, 21px);
  line-height: 1.35;
  color: var(--paper);
  margin: 0 0 10px;
  font-weight: 700;
}

.page-about .stage-card__text {
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--text-2);
  margin: 0;
  max-width: 62ch;
}

.page-about .stage-card__meta {
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px dashed var(--line-soft);
  font-size: 11.5px;
  letter-spacing: .03em;
  color: var(--text-3);
}

/* ---------- 团队 ---------- */
.page-about .about-team__intro {
  max-width: 56ch;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--text-2);
  margin: 0;
}

.page-about .about-team__figure {
  margin: clamp(22px, 3vw, 34px) 0 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--ink-3);
}

.page-about .about-team__figure img,
.page-about .about-rhythm__media img,
.page-about .about-partners__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}

.page-about .about-team__figure .figure__caption,
.page-about .about-rhythm__media .figure__caption {
  padding: 10px 16px 12px;
  font-size: 11.5px;
  color: var(--text-3);
  margin: 0;
  border-top: 1px solid var(--line-soft);
}

.page-about .team-bars {
  display: grid;
  gap: 14px;
  margin-top: clamp(20px, 3vw, 30px);
}

.page-about .team-bar {
  padding: 16px 18px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-md);
  background: rgba(20, 40, 61, .5);
  transition: border-color .24s var(--ease), transform .24s var(--ease), background .24s var(--ease);
}

.page-about .team-bar:hover,
.page-about .team-bar:focus-within {
  border-color: var(--line-cyan);
  background: rgba(20, 40, 61, .84);
  transform: translateY(-3px);
}

.page-about .team-bar__head {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin-bottom: 10px;
}

.page-about .team-bar__count {
  font-size: 22px;
  font-weight: 700;
  color: var(--cyan);
  line-height: 1;
}

.page-about .team-bar__role {
  font-size: 15px;
  color: var(--paper);
  font-weight: 600;
}

.page-about .team-bar__track {
  display: block;
  height: 6px;
  border-radius: var(--pill);
  background: rgba(124, 138, 154, .18);
  overflow: hidden;
}

.page-about .team-bar__fill {
  display: block;
  height: 100%;
  border-radius: var(--pill);
  background: linear-gradient(90deg, var(--cyan), var(--violet));
}

.page-about .team-bar:nth-child(1) .team-bar__fill { width: 100%; }
.page-about .team-bar:nth-child(2) .team-bar__fill { width: 66.6%; }
.page-about .team-bar:nth-child(3) .team-bar__fill { width: 55.5%; }
.page-about .team-bar:nth-child(4) .team-bar__fill { width: 33.3%; }

.page-about .team-bar__desc {
  margin: 12px 0 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--text-2);
}

/* ---------- 归档节奏 ---------- */
.page-about .about-rhythm__body {
  display: grid;
  gap: clamp(22px, 3vw, 36px);
  margin-top: clamp(20px, 3vw, 34px);
}

.page-about .about-rhythm__media {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--ink-3);
}

.page-about .about-rhythm__text p {
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--text-2);
  margin: 0 0 14px;
  max-width: 60ch;
}

.page-about .rhythm-facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
}

.page-about .rhythm-facts__item {
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line-violet);
  background: rgba(139, 107, 255, .08);
}

.page-about .rhythm-facts__num {
  display: block;
  font-size: 22px;
  font-weight: 700;
  color: var(--violet);
  line-height: 1.15;
}

.page-about .rhythm-facts__suffix {
  font-size: 12px;
  margin-left: 1px;
}

.page-about .rhythm-facts__label {
  display: block;
  font-size: 12px;
  color: var(--text-2);
  margin-top: 2px;
}

/* ---------- 选型对比表 ---------- */
.page-about .about-compare__intro {
  max-width: 58ch;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--text-2);
  margin: 0;
}

.page-about .about-compare__table {
  width: 100%;
  min-width: 720px;
  margin-top: clamp(20px, 3vw, 32px);
}

.page-about .about-compare__table thead th {
  font-size: 11.5px;
  letter-spacing: .08em;
  color: var(--slate);
  text-transform: none;
}

.page-about .about-compare__table tbody th {
  font-size: 14px;
  color: var(--cyan);
  font-weight: 600;
  white-space: nowrap;
}

.page-about .about-compare__table tbody td {
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--text-2);
}

.page-about .about-compare__table tbody tr {
  transition: background .2s var(--ease), box-shadow .2s var(--ease);
}

.page-about .about-compare__table tbody tr:hover {
  background: rgba(53, 224, 208, .07);
  box-shadow: inset 3px 0 0 var(--cyan);
}

/* ---------- 合作 ---------- */
.page-about .about-partners__intro {
  max-width: 58ch;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--text-2);
  margin: 0;
}

.page-about .partners-grid {
  display: grid;
  gap: 16px;
  margin-top: clamp(20px, 3vw, 32px);
}

.page-about .partner-card {
  position: relative;
  padding: clamp(18px, 2.4vw, 24px);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-md);
  background: linear-gradient(150deg, rgba(20, 40, 61, .7), rgba(11, 27, 43, .42));
  transition: border-color .26s var(--ease), transform .26s var(--ease);
}

.page-about .partner-card:hover {
  border-color: var(--line-violet);
  transform: translateY(-4px);
}

.page-about .partner-card--honor {
  border-color: rgba(240, 169, 60, .34);
  background: linear-gradient(150deg, rgba(240, 169, 60, .1), rgba(11, 27, 43, .5));
}

.page-about .partner-card__index {
  font-size: 11.5px;
  letter-spacing: .08em;
  color: var(--violet);
  margin: 0 0 8px;
}

.page-about .partner-card--honor .partner-card__index {
  color: var(--amber);
}

.page-about .partner-card__title {
  font-size: 17px;
  line-height: 1.4;
  color: var(--paper);
  margin: 0 0 10px;
  font-weight: 700;
}

.page-about .partner-card__text {
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--text-2);
  margin: 0;
}

.page-about .about-partners__figure {
  margin: 16px 0 0;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

/* ---------- 本地信息 ---------- */
.page-about .local-cards {
  display: grid;
  gap: 12px;
  margin-top: clamp(20px, 3vw, 30px);
}

.page-about .local-card {
  padding: 16px 18px;
  border: 1px solid var(--line-soft);
  border-left: 2px solid var(--moss);
  border-radius: var(--radius-sm);
  background: rgba(20, 40, 61, .42);
  transition: border-left-color .24s var(--ease);
}

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

.page-about .local-card__key {
  margin: 0 0 6px;
  font-size: 11.5px;
  letter-spacing: .08em;
  color: var(--slate);
}

.page-about .local-card__val {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.65;
  color: var(--paper);
}

.page-about .about-local__note {
  margin: 18px 0 0;
  max-width: 68ch;
  font-size: 13px;
  line-height: 1.7;
  color: var(--text-3);
}

.page-about .about-next {
  display: grid;
  gap: 10px;
  margin-top: clamp(24px, 3.4vw, 40px);
}

.page-about .about-next__link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 15px 18px;
  border: 1px solid var(--line-soft);
  border-radius: var(--pill);
  color: var(--paper);
  font-size: 14.5px;
  text-decoration: none;
  transition: border-color .24s var(--ease), background .24s var(--ease), transform .24s var(--ease);
}

.page-about .about-next__link:hover,
.page-about .about-next__link:focus-visible {
  border-color: var(--line-cyan);
  background: rgba(53, 224, 208, .08);
  transform: translateX(4px);
}

.page-about .about-next__arrow {
  color: var(--cyan);
  font-size: 14px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-about .team-bars {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

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

  .page-about .local-card--wide {
    grid-column: 1 / -1;
  }

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

@media (min-width: 960px) {
  .page-about .about-hero {
    grid-template-columns: minmax(0, 38fr) minmax(0, 62fr);
    align-items: center;
  }

  .page-about .about-wall__body {
    grid-template-columns: var(--about-axis-w) minmax(0, 1fr);
    gap: var(--about-gap);
    align-items: start;
  }

  .page-about .year-axis {
    position: sticky;
    top: calc(var(--anchor-offset) + 12px);
    flex-direction: column;
    gap: 6px;
    overflow: visible;
    padding: 0 0 0 22px;
  }

  .page-about .year-axis::before {
    left: 6px;
    right: auto;
    top: 8px;
    bottom: 8px;
    width: 1px;
    height: auto;
    background: linear-gradient(180deg, var(--line-cyan), var(--line-violet) 58%, var(--line-soft));
  }

  .page-about .year-node {
    min-width: 0;
    padding: 14px 16px;
  }

  .page-about .year-node::before {
    left: -21px;
    top: 20px;
  }

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

  .page-about .about-team__figure {
    max-width: 100%;
  }

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

  .page-about .team-bar {
    display: flex;
    flex-direction: column;
  }

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

  .page-about .partner-card--honor {
    grid-column: 2 / -1;
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 20px;
    align-items: start;
  }

  .page-about .partner-card--honor .partner-card__index {
    grid-column: 1 / -1;
  }

  .page-about .about-partners__figure {
    margin: 0;
    align-self: stretch;
  }

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

  .page-about .local-card--wide {
    grid-column: 3 / 4;
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-about .about-figures__item,
  .page-about .year-node,
  .page-about .team-bar,
  .page-about .partner-card,
  .page-about .about-next__link {
    transition: none;
    transform: none;
  }
}