.page-about {
  --about-card: var(--ky-paper);
  --about-edge-line: rgba(27, 36, 48, 0.16);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  display: grid;
  gap: 34px;
  margin-top: 18px;
  padding: 30px 0 6px;
  border-top: 3px solid var(--ky-ink);
}

.page-about .about-hero__intro .ky-meta {
  display: block;
  margin-bottom: 16px;
  color: var(--ky-orange);
}

.page-about .about-hero__lead {
  margin: 20px 0 0;
  font-size: 1.08rem;
  line-height: 1.85;
  max-width: 36em;
  color: var(--ky-brown);
}

.page-about .about-hero__note {
  margin: 16px 0 0;
  padding-left: 14px;
  border-left: 3px solid var(--ky-sand);
  font-size: 0.98rem;
  line-height: 1.8;
  color: var(--ky-rock);
  max-width: 34em;
}

.page-about .about-ledger {
  position: relative;
  margin: 0;
  display: grid;
  gap: 0;
  padding: 26px 26px 34px;
  background: var(--ky-navy);
  color: var(--ky-cream);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 30px), calc(100% - 30px) 100%, 0 100%);
}

.page-about .about-ledger::before {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(90deg, rgba(226, 166, 60, 0.16) 0 1px, transparent 1px 15px);
  pointer-events: none;
}

.page-about .about-ledger__row {
  position: relative;
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 13px 0;
  border-bottom: 1px dashed rgba(243, 233, 218, 0.26);
}

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

.page-about .about-ledger dt {
  flex: 0 0 auto;
  min-width: 5.4em;
  font-family: var(--ky-font-mono);
  font-size: 1.5rem;
  letter-spacing: 0.02em;
  color: var(--ky-sand);
}

.page-about .about-ledger dt span {
  margin-left: 3px;
  font-size: 0.78rem;
  color: rgba(243, 233, 218, 0.66);
}

.page-about .about-ledger dd {
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.65;
  color: rgba(243, 233, 218, 0.86);
}

/* ---------- 通用图注 ---------- */
.page-about .ky-figure {
  margin: 0;
}

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

.page-about .ky-media {
  overflow: hidden;
  background: var(--ky-clay);
}

.page-about .ky-media__cap {
  display: block;
  margin-top: 10px;
  font-family: var(--ky-font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.05em;
  line-height: 1.7;
  color: var(--ky-rock);
}

/* ---------- 起步 ---------- */
.page-about .about-origin__inner {
  display: grid;
  gap: 30px;
}

.page-about .about-origin__text .ky-meta {
  display: block;
  margin-bottom: 14px;
  color: var(--ky-orange);
}

.page-about .about-origin__text p {
  margin: 0 0 16px;
  line-height: 1.85;
  color: var(--ky-brown);
  max-width: 34em;
}

.page-about .about-origin__text p:last-child {
  margin-bottom: 0;
}

.page-about .about-origin__media {
  border: 2px solid var(--ky-ink);
  padding: 10px;
  background: var(--ky-clay);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 26px), calc(100% - 26px) 100%, 0 100%);
}

/* ---------- 团队 ---------- */
.page-about .about-team .ky-meta,
.page-about .about-archive .ky-meta,
.page-about .about-road .ky-meta,
.page-about .about-review .ky-meta {
  display: block;
  margin-bottom: 14px;
  color: var(--ky-orange);
}

.page-about .about-team__lead,
.page-about .about-archive__lead,
.page-about .about-road__lead {
  margin: 18px 0 0;
  line-height: 1.85;
  color: var(--ky-brown);
  max-width: 40em;
}

.page-about .about-team__bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 28px;
}

.page-about .about-team__seg {
  flex: var(--w, 1) 1 150px;
  min-height: 146px;
  padding: 16px 16px 18px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  background: var(--about-card);
  border-top: 5px solid var(--ky-sand);
  transition: background 0.16s var(--ky-ease), border-color 0.16s var(--ky-ease);
}

.page-about .about-team__seg--content { --w: 11; }
.page-about .about-team__seg--tech { --w: 9; border-top-color: var(--ky-orange); }
.page-about .about-team__seg--support { --w: 7; border-top-color: var(--ky-navy); background: var(--ky-clay); }

.page-about .about-team__seg:hover,
.page-about .about-team__seg:focus-within {
  background: var(--ky-clay);
  border-top-color: var(--ky-orange);
}

.page-about .about-team__num {
  font-family: var(--ky-font-display);
  font-size: 2.3rem;
  line-height: 1;
  font-weight: 900;
  color: var(--ky-ink);
}

.page-about .about-team__name {
  font-family: var(--ky-font-mono);
  font-size: 0.86rem;
  letter-spacing: 0.08em;
  color: var(--ky-orange);
}

.page-about .about-team__duty {
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--ky-rock);
}

.page-about .about-team__week {
  margin-top: 30px;
  padding: 22px 24px 24px;
  border-left: 5px solid var(--ky-orange);
  background: var(--ky-paper);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 20px), calc(100% - 20px) 100%, 0 100%);
}

.page-about .about-team__week h3 {
  margin: 0 0 10px;
  font-family: var(--ky-font-display);
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--ky-ink);
}

.page-about .about-team__week p {
  margin: 0;
  line-height: 1.85;
  color: var(--ky-brown);
  max-width: 40em;
}

/* ---------- 资料库规模 ---------- */
.page-about .about-cats {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 26px 0 0;
  padding: 0;
}

.page-about .about-cats li {
  font-family: var(--ky-font-mono);
  font-size: 0.84rem;
  letter-spacing: 0.06em;
  padding: 9px 15px 9px 13px;
  background: var(--ky-clay);
  color: var(--ky-brown);
  clip-path: polygon(0 0, 100% 0, 100% 100%, 9px 100%, 0 calc(100% - 9px));
  transition: background 0.16s var(--ky-ease), color 0.16s var(--ky-ease);
}

.page-about .about-cats li:hover {
  background: var(--ky-orange);
  color: var(--ky-cream);
}

.page-about .about-archive__note {
  margin: 14px 0 0;
  font-size: 0.92rem;
  line-height: 1.75;
  color: var(--ky-rock);
  max-width: 40em;
}

.page-about .about-flow {
  list-style: none;
  margin: 32px 0 0;
  padding: 0;
  display: grid;
  gap: 20px;
  counter-reset: none;
}

.page-about .about-flow li {
  padding: 14px 0 4px 16px;
  border-left: 3px solid var(--ky-sand);
}

.page-about .about-flow__no {
  display: block;
  font-family: var(--ky-font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  color: var(--ky-orange);
}

.page-about .about-flow h3 {
  margin: 8px 0 8px;
  font-family: var(--ky-font-display);
  font-size: 1.08rem;
  font-weight: 800;
  color: var(--ky-ink);
}

.page-about .about-flow p {
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.75;
  color: var(--ky-brown);
}

/* ---------- 时间轴 ---------- */
.page-about .about-years {
  display: flex;
  flex-wrap: wrap;
  margin: 26px 0 32px;
  border-top: 2px solid var(--ky-ink);
  border-bottom: 2px solid var(--ky-ink);
}

.page-about .about-years a {
  flex: 1 1 auto;
  text-align: center;
  padding: 12px 10px;
  font-family: var(--ky-font-mono);
  font-size: 0.9rem;
  letter-spacing: 0.04em;
  text-decoration: none;
  color: var(--ky-ink);
  border-right: 1px solid var(--about-edge-line);
  transition: background 0.16s var(--ky-ease), color 0.16s var(--ky-ease);
}

.page-about .about-years a:last-child {
  border-right: 0;
}

.page-about .about-years a:hover,
.page-about .about-years a:focus-visible {
  background: var(--ky-orange);
  color: var(--ky-cream);
}

.page-about .about-timeline {
  list-style: none;
  position: relative;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 26px;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  top: 8px;
  bottom: 8px;
  left: 9px;
  width: 2px;
  background: repeating-linear-gradient(180deg, var(--ky-sand) 0 6px, transparent 6px 14px);
}

.page-about .about-tl {
  position: relative;
  padding-left: 36px;
}

.page-about .about-tl::after {
  content: "";
  position: absolute;
  left: 3px;
  top: 28px;
  width: 14px;
  height: 14px;
  background: var(--ky-sand);
  transition: background 0.18s var(--ky-ease), transform 0.18s var(--ky-ease);
}

.page-about .about-tl:hover::after,
.page-about .about-tl:focus-within::after {
  background: var(--ky-orange);
  transform: rotate(45deg);
}

.page-about .about-tl__card {
  padding: 20px 22px 24px;
  background: var(--about-card);
  border: 1px solid var(--about-edge-line);
  border-top: 4px solid var(--ky-orange);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 20px), calc(100% - 20px) 100%, 0 100%);
}

.page-about .about-tl__card .ky-meta {
  display: block;
  margin: 0 0 10px;
  color: var(--ky-rock);
}

.page-about .about-tl__card h3 {
  margin: 0 0 10px;
  font-family: var(--ky-font-display);
  font-size: 1.16rem;
  font-weight: 800;
  line-height: 1.4;
  color: var(--ky-ink);
}

.page-about .about-tl__card p {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--ky-brown);
}

/* ---------- 复核 ---------- */
.page-about .about-review__inner {
  display: grid;
  gap: 30px;
}

.page-about .about-review__media {
  border: 1px solid var(--about-edge-line);
  padding: 8px;
  background: var(--ky-paper);
}

.page-about .about-review__text p {
  margin: 0 0 16px;
  line-height: 1.85;
  color: var(--ky-brown);
  max-width: 34em;
}

.page-about .about-review__text p:last-child {
  margin-bottom: 0;
}

/* ---------- 本地协作 ---------- */
.page-about .about-partners {
  background: var(--ky-navy);
  color: var(--ky-cream);
  padding: 54px 0 58px;
}

.page-about .about-partners__inner {
  display: grid;
  gap: 34px;
}

.page-about .about-partners__meta {
  display: block;
  margin-bottom: 14px;
  color: var(--ky-lime);
}

.page-about .about-partners .ky-title {
  color: var(--ky-cream);
}

.page-about .about-partners__text > p {
  margin: 18px 0 0;
  line-height: 1.85;
  color: rgba(243, 233, 218, 0.86);
  max-width: 36em;
}

.page-about .about-partners__list {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.page-about .about-partners__list li {
  display: flex;
  align-items: baseline;
  gap: 16px;
  padding: 14px 0;
  border-bottom: 1px dashed rgba(243, 233, 218, 0.24);
}

.page-about .about-partners__list li:first-child {
  border-top: 1px dashed rgba(243, 233, 218, 0.24);
}

.page-about .about-partners__list b {
  flex: 0 0 auto;
  min-width: 2.6em;
  font-family: var(--ky-font-display);
  font-size: 1.85rem;
  font-weight: 900;
  line-height: 1;
  color: var(--ky-sand);
}

.page-about .about-partners__list span {
  font-size: 0.94rem;
  line-height: 1.7;
  color: rgba(243, 233, 218, 0.86);
}

.page-about .about-partners__annual {
  margin: 22px 0 0;
  padding-left: 14px;
  border-left: 3px solid var(--ky-lime);
  font-size: 0.94rem;
  line-height: 1.8;
  color: rgba(243, 233, 218, 0.86);
  max-width: 36em;
}

.page-about .about-partners__media {
  border: 1px solid rgba(226, 166, 60, 0.42);
  padding: 8px;
  background: rgba(243, 233, 218, 0.06);
}

.page-about .about-partners .ky-media__cap {
  color: rgba(243, 233, 218, 0.68);
}

/* ---------- 收尾 ---------- */
.page-about .about-next__inner {
  display: grid;
  gap: 26px;
  padding-top: 30px;
  border-top: 3px solid var(--ky-ink);
}

.page-about .about-next__text p {
  margin: 16px 0 0;
  line-height: 1.85;
  color: var(--ky-brown);
  max-width: 40em;
}

.page-about .about-next__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
}

/* ---------- 桌面布局 ---------- */
@media (min-width: 800px) {
  .page-about .about-flow {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 22px;
  }

  .page-about .about-ledger dt {
    font-size: 1.75rem;
  }
}

@media (min-width: 920px) {
  .page-about .about-hero {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    gap: 56px;
    align-items: end;
  }

  .page-about .about-hero__lead {
    font-size: 1.14rem;
  }

  .page-about .about-origin__inner {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    gap: 52px;
    align-items: start;
  }

  .page-about .about-team__bar {
    flex-wrap: nowrap;
  }

  .page-about .about-team__seg {
    min-height: 164px;
    padding: 20px 20px 22px;
  }

  .page-about .about-timeline::before {
    left: 50%;
    margin-left: -1px;
  }

  .page-about .about-tl {
    width: calc(50% - 48px);
    padding-left: 0;
    margin-right: auto;
  }

  .page-about .about-tl::after {
    left: auto;
    right: -55px;
  }

  .page-about .about-tl:nth-child(even) {
    margin-right: 0;
    margin-left: auto;
  }

  .page-about .about-tl:nth-child(even)::after {
    left: -55px;
    right: auto;
  }

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

  .page-about .about-review__inner {
    grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
    gap: 52px;
    align-items: center;
  }

  .page-about .about-partners__inner {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: 54px;
    align-items: center;
  }

  .page-about .about-partners {
    padding: 66px 0 70px;
  }

  .page-about .about-next__inner {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 0.7fr);
    gap: 48px;
    align-items: end;
  }

  .page-about .about-next__actions {
    justify-content: flex-end;
  }
}

@media (min-width: 1160px) {
  .page-about .about-tl {
    width: calc(50% - 60px);
  }

  .page-about .about-tl::after {
    right: -67px;
  }

  .page-about .about-tl:nth-child(even)::after {
    left: -67px;
    right: auto;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-team__seg,
  .page-about .about-cats li,
  .page-about .about-years a,
  .page-about .about-tl::after {
    transition: none;
  }

  .page-about .about-tl:hover::after,
  .page-about .about-tl:focus-within::after {
    transform: none;
  }
}