.page-about {
  --about-panel: linear-gradient(158deg, rgba(18, 24, 32, .92), rgba(7, 9, 12, .72));
  --about-hair: rgba(42, 53, 64, .72);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding-top: clamp(1.25rem, 4vw, 2.75rem);
  padding-bottom: clamp(2rem, 6vw, 4rem);
}

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

.page-about h1 {
  margin: 0 0 1rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2rem, 7.6vw, 4.1rem);
  line-height: 1.06;
  letter-spacing: -.012em;
  color: var(--paper);
  text-wrap: balance;
}

.page-about .about-hero__lead .lede {
  max-width: 47ch;
  margin: 0;
}

.page-about .about-hero__card {
  padding: 1.15rem 1.15rem 1.3rem;
  position: relative;
}

.page-about .about-hero__card::after {
  content: "";
  position: absolute;
  inset: 6px 6px auto auto;
  width: 26px;
  height: 26px;
  border-top: 1px solid var(--gold);
  border-right: 1px solid var(--gold);
  opacity: .55;
  pointer-events: none;
}

.page-about .card-label {
  margin: 0 0 .5rem;
  font-size: .72rem;
  letter-spacing: .16em;
  color: var(--steppe);
}

.page-about .now-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .1rem;
}

.page-about .now-list li {
  display: grid;
  gap: .1rem;
  padding: .62rem 0;
  border-bottom: 1px solid var(--about-hair);
}

.page-about .now-list li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-about .now-num {
  color: var(--gold-hi);
  font-size: 1.05rem;
  letter-spacing: .02em;
}

.page-about .now-txt {
  color: var(--mist);
  font-size: .875rem;
  line-height: 1.6;
}

.page-about .plate-row {
  list-style: none;
  margin: var(--gap) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(9.5rem, 1fr));
  gap: .7rem;
}

.page-about .plate {
  display: grid;
  gap: .15rem;
  padding: .85rem 1rem .95rem;
  border: 1px solid var(--about-hair);
  border-left: 2px solid var(--gold);
  background: var(--about-panel);
}

.page-about .plate-num {
  font-size: clamp(1.3rem, 5vw, 1.85rem);
  line-height: 1.1;
  color: var(--gold-hi);
}

.page-about .plate-key {
  font-size: .78rem;
  letter-spacing: .05em;
  color: var(--mist);
}

/* ---------- 品牌起点 ---------- */
.page-about .origin__grid {
  align-items: start;
}

.page-about .origin__text p {
  max-width: 52ch;
}

.page-about .origin__text .note {
  margin-top: 1.2rem;
}

.page-about .origin__link {
  margin: 1.4rem 0 0;
}

.page-about .media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

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

/* ---------- 空间版图 ---------- */
.page-about .space__figure {
  margin: var(--gap) 0 0;
}

.page-about .plan {
  display: grid;
  gap: var(--gap);
  margin-top: var(--gap);
}

.page-about .plan__canvas {
  border: 1px solid var(--about-hair);
  background: rgba(7, 9, 12, .7);
  padding: .5rem;
}

.page-about .plan-svg {
  display: block;
  width: 100%;
  height: auto;
}

.page-about .plan-frame {
  fill: none;
  stroke: var(--line);
  stroke-width: 1;
  stroke-dasharray: 6 6;
}

.page-about .plan-svg .zone rect {
  fill: rgba(13, 17, 23, .9);
  stroke: var(--line);
  stroke-width: 1.2;
  transition: fill .3s var(--ease), stroke .3s var(--ease);
}

.page-about .plan-svg .zone text {
  fill: var(--mist);
  font-family: var(--font-body);
  font-size: 17px;
  letter-spacing: .05em;
}

.page-about .plan-svg .zone .lbl {
  fill: var(--gold);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .1em;
}

.page-about .plan-svg .zone .sub {
  font-size: 13px;
  fill: var(--mist);
  opacity: .82;
}

.page-about .plan-svg .zone:hover rect {
  fill: rgba(200, 163, 90, .17);
  stroke: var(--gold-hi);
}

.page-about .plan:has(.legend-item--exhibit:hover) .zone--exhibit rect,
.page-about .plan:has(.legend-item--meet:hover) .zone--meet rect,
.page-about .plan:has(.legend-item--record:hover) .zone--record rect,
.page-about .plan:has(.legend-item--dine:hover) .zone--dine rect,
.page-about .plan:has(.legend-item--reception:hover) .zone--reception rect {
  fill: rgba(200, 163, 90, .17);
  stroke: var(--gold-hi);
}

.page-about .legend {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .1rem;
}

.page-about .legend-item {
  display: grid;
  grid-template-columns: 1.6rem 1fr;
  grid-template-areas: "key name" "key desc";
  gap: .1rem .6rem;
  padding: .6rem .5rem;
  border-bottom: 1px solid var(--about-hair);
  transition: background .25s var(--ease);
}

.page-about .legend-item:hover {
  background: rgba(200, 163, 90, .08);
}

.page-about .legend-key {
  grid-area: key;
  align-self: center;
  color: var(--gold);
  font-size: .8rem;
  border: 1px solid var(--about-hair);
  width: 1.45rem;
  height: 1.45rem;
  display: grid;
  place-items: center;
}

.page-about .legend-name {
  grid-area: name;
  font-size: .95rem;
  color: var(--paper);
  letter-spacing: .04em;
}

.page-about .legend-desc {
  grid-area: desc;
  font-size: .8rem;
  color: var(--mist);
}

.page-about .space-facts {
  list-style: none;
  margin: var(--gap) 0 0;
  padding: 0;
  display: grid;
  gap: .6rem;
}

.page-about .space-facts li {
  display: grid;
  gap: .15rem;
  padding: .8rem 1rem;
  border-top: 1px solid var(--about-hair);
  border-bottom: 1px solid var(--about-hair);
}

.page-about .fact-num {
  color: var(--cyber);
  font-size: 1rem;
  letter-spacing: .05em;
}

.page-about .fact-txt {
  color: var(--mist);
  font-size: .875rem;
  line-height: 1.65;
}

/* ---------- 团队 ---------- */
.page-about .team__banner {
  margin: var(--gap) 0 0;
}

.page-about .team-table {
  width: 100%;
  margin-top: var(--gap);
  border-collapse: collapse;
  font-size: .925rem;
}

.page-about .team-table caption {
  text-align: left;
  padding-bottom: .7rem;
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .14em;
  color: var(--steppe);
}

.page-about .team-table thead {
  display: none;
}

.page-about .team-table tbody,
.page-about .team-table tr,
.page-about .team-table th,
.page-about .team-table td {
  display: block;
}

.page-about .team-table tr {
  margin-bottom: .65rem;
  padding: .9rem 1rem;
  border: 1px solid var(--about-hair);
  border-left: 2px solid var(--gold);
  background: rgba(13, 17, 23, .7);
}

.page-about .team-table th[scope="row"] {
  font-family: var(--font-display);
  font-size: 1.12rem;
  font-weight: 700;
  color: var(--paper);
  letter-spacing: .03em;
  margin-bottom: .3rem;
}

.page-about .team-table td {
  padding: .16rem 0;
  color: var(--mist);
  line-height: 1.6;
}

.page-about .team-table td::before {
  content: attr(data-label) " · ";
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .09em;
  color: var(--steppe);
}

.page-about .team-table td.num {
  color: var(--gold-hi);
  font-family: var(--font-mono);
}

.page-about .team__note {
  margin-top: 1.1rem;
}

.page-about .team__note a {
  color: var(--gold-hi);
  text-decoration: underline;
  text-underline-offset: .2em;
}

/* ---------- 时间轴 ---------- */
.page-about .timeline {
  list-style: none;
  margin: var(--gap) 0 0;
  padding: 0 0 0 2rem;
  position: relative;
  display: grid;
  gap: .55rem;
}

.page-about .timeline::before {
  content: "";
  position: absolute;
  left: 4px;
  top: .6rem;
  bottom: 1rem;
  width: 1px;
  background: linear-gradient(var(--gold), var(--line) 55%, rgba(42, 53, 64, 0));
}

.page-about .tl-item {
  position: relative;
}

.page-about .tl-item::before {
  content: "";
  position: absolute;
  left: -2rem;
  top: .95rem;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--ink-900);
  border: 1px solid var(--gold);
  box-shadow: 0 0 0 3px rgba(200, 163, 90, .12);
  transition: background .3s var(--ease), box-shadow .3s var(--ease);
}

.page-about .tl-item:has(details[open])::before {
  background: var(--gold);
  box-shadow: 0 0 0 4px rgba(200, 163, 90, .2);
}

.page-about .tl-node summary {
  display: flex;
  align-items: baseline;
  gap: .7rem;
  padding: .55rem .2rem;
  cursor: pointer;
  list-style: none;
  border-bottom: 1px solid var(--about-hair);
  transition: border-color .25s var(--ease);
}

.page-about .tl-node summary::-webkit-details-marker {
  display: none;
}

.page-about .tl-node summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--gold);
}

.page-about .tl-node[open] summary::after {
  content: "–";
}

.page-about .tl-node summary:hover {
  border-color: var(--gold);
}

.page-about .tl-year {
  color: var(--gold-hi);
  font-size: .82rem;
  letter-spacing: .1em;
  flex: 0 0 auto;
}

.page-about .tl-title {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--paper);
  letter-spacing: .02em;
}

.page-about .tl-body {
  margin: .6rem 0 .5rem;
  padding-left: .1rem;
  font-size: .9rem;
  line-height: 1.75;
  color: var(--mist);
  max-width: 56ch;
}

/* ---------- 合作与荣誉 ---------- */
.page-about .partners__grid {
  align-items: start;
}

.page-about .partners__grid p {
  max-width: 52ch;
}

.page-about .partners__link {
  margin: 1.4rem 0 0;
}

.page-about .honor-list {
  display: grid;
  gap: .8rem;
}

.page-about .honor {
  padding: 1rem 1.1rem 1.15rem;
  border: 1px solid var(--about-hair);
  border-top: 2px solid var(--terracotta);
  background: var(--about-panel);
}

.page-about .honor-year {
  margin: 0 0 .35rem;
  font-size: .74rem;
  letter-spacing: .16em;
  color: var(--terracotta);
}

.page-about .honor-title {
  margin: 0 0 .35rem;
  font-family: var(--font-display);
  font-size: 1.12rem;
  font-weight: 700;
  color: var(--paper);
  letter-spacing: .02em;
}

.page-about .honor-desc {
  margin: 0;
  font-size: .86rem;
  line-height: 1.65;
  color: var(--mist);
}

.page-about .tag-wall {
  margin-top: var(--gap);
  padding-top: 1.1rem;
  border-top: 1px solid var(--about-hair);
}

.page-about .tag-wall__label {
  margin: 0 0 .75rem;
  font-size: .72rem;
  letter-spacing: .16em;
  color: var(--signal);
}

.page-about .tag-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
}

/* ---------- 尾段 ---------- */
.page-about .next__inner {
  display: grid;
  gap: var(--gap);
  padding: clamp(1.25rem, 4vw, 2.25rem);
  border: 1px solid var(--about-hair);
  border-left: 2px solid var(--gold);
  background: linear-gradient(120deg, rgba(18, 24, 32, .95), rgba(7, 9, 12, .72) 62%, rgba(46, 127, 120, .14));
}

.page-about .next__title {
  margin-bottom: .5rem;
}

.page-about .next__lede {
  margin: 0;
  max-width: 44ch;
  color: var(--mist);
  font-size: .95rem;
  line-height: 1.7;
}

.page-about .next__actions {
  display: flex;
  flex-wrap: wrap;
  gap: .6rem;
  align-self: center;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    gap: calc(var(--gap) * 1.2);
  }

  .page-about .about-hero__card {
    align-self: end;
  }

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

  .page-about .plan {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-about .legend-item {
    padding: .55rem .6rem;
  }

  .page-about .space-facts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: .8rem;
  }

  .page-about .space-facts li {
    border: 1px solid var(--about-hair);
    border-left: 2px solid var(--steppe);
    background: rgba(13, 17, 23, .6);
  }

  .page-about .next__inner {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
    align-items: center;
  }
}

@media (min-width: 960px) {
  .page-about .about-hero {
    padding-top: clamp(2rem, 4vw, 3.5rem);
  }

  .page-about .team-table {
    display: table;
    border-collapse: collapse;
  }

  .page-about .team-table thead {
    display: table-header-group;
  }

  .page-about .team-table tbody {
    display: table-row-group;
  }

  .page-about .team-table tr {
    display: table-row;
    margin: 0;
    padding: 0;
    border: 0;
    background: transparent;
  }

  .page-about .team-table th,
  .page-about .team-table td {
    display: table-cell;
    padding: .85rem 1rem;
    text-align: left;
    vertical-align: top;
    border-bottom: 1px solid var(--about-hair);
    line-height: 1.65;
  }

  .page-about .team-table thead th {
    font-family: var(--font-mono);
    font-size: .72rem;
    font-weight: 400;
    letter-spacing: .12em;
    color: var(--steppe);
    border-bottom: 1px solid var(--gold);
  }

  .page-about .team-table th[scope="row"] {
    font-size: 1.02rem;
    margin: 0;
    white-space: nowrap;
    border-left: 2px solid var(--gold);
  }

  .page-about .team-table td::before {
    content: none;
  }

  .page-about .team-table tbody tr:hover {
    background: rgba(200, 163, 90, .06);
  }

  .page-about .timeline {
    padding-left: 8.5rem;
  }

  .page-about .timeline::before {
    left: 7.3rem;
  }

  .page-about .tl-item::before {
    left: -1.2rem;
    top: 1rem;
  }

  .page-about .tl-year {
    font-size: .9rem;
    width: 5.5rem;
  }

  .page-about .tl-title {
    font-size: 1.15rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .plan-svg .zone rect,
  .page-about .legend-item,
  .page-about .tl-item::before,
  .page-about .tl-node summary {
    transition: none;
  }
}