.page-about {
  padding: 26px 0 0;
  color: var(--ink);
  font-family: var(--font-body);
  background:
    radial-gradient(circle at 14% 4%, rgba(46, 125, 143, 0.12), transparent 46%),
    linear-gradient(180deg, var(--ice) 0%, var(--white) 54%, var(--white) 100%);
}

.page-about .breadcrumb {
  margin-bottom: 22px;
}

.page-about h2 {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-size: clamp(26px, 5.4vw, 40px);
  font-weight: 900;
  line-height: 1.14;
  letter-spacing: -0.01em;
}

.page-about h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 800;
  line-height: 1.3;
}

.page-about p {
  margin: 0 0 14px;
  font-size: 16px;
  line-height: 1.78;
}

.page-about a:focus-visible,
.page-about button:focus-visible {
  outline: 2px solid var(--chip);
  outline-offset: 2px;
}

/* ============ 刊头 ============ */
.page-about .about-masthead {
  display: grid;
  gap: 26px;
  padding-bottom: 30px;
  border-bottom: var(--bd) solid var(--ink);
}

.page-about .about-masthead h1 {
  margin: 8px 0 18px;
  font-family: var(--font-display);
  font-size: clamp(32px, 8vw, 62px);
  font-weight: 900;
  line-height: 1.06;
  letter-spacing: -0.02em;
}

.page-about .about-lede {
  max-width: 64ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--ink);
}

.page-about .about-board {
  padding: 18px;
  border: var(--bd-thin) solid var(--ink);
  border-left: 6px solid var(--chip);
  background: var(--gold-soft);
  box-shadow: var(--shadow-md);
}

.page-about .about-board__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--felt);
}

.page-about .about-figures {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-figures li {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding-bottom: 8px;
  border-bottom: 2px solid rgba(11, 31, 28, 0.18);
}

.page-about .about-figures__num {
  font-family: var(--font-mono);
  font-size: 24px;
  font-weight: 700;
  line-height: 1.1;
  color: var(--ink);
}

.page-about .about-figures__txt {
  font-size: 12px;
  line-height: 1.5;
  color: var(--gray);
}

.page-about .about-jump {
  display: grid;
  gap: 2px;
  margin-top: 16px;
  padding-top: 12px;
  border-top: var(--bd-thin) solid var(--ink);
}

.page-about .about-jump a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 7px 8px;
  border-left: 3px solid transparent;
  color: var(--ink);
  font-size: 14px;
  text-decoration: none;
  transition: background 0.16s var(--ease), border-color 0.16s var(--ease);
}

.page-about .about-jump a:hover,
.page-about .about-jump a:focus-visible {
  background: var(--white);
  border-left-color: var(--chip);
}

.page-about .about-jump__num {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  color: var(--river);
}

/* ============ 首图 ============ */
.page-about .about-hero-figure {
  margin: 32px 0 0;
}

.page-about .about-hero-frame {
  aspect-ratio: 3 / 2;
  border: var(--bd) solid var(--ink);
  box-shadow: var(--shadow-md);
}

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

.page-about .about-hero-figure figcaption {
  margin-top: 12px;
  padding-left: 12px;
  border-left: 3px solid var(--cinnabar);
  font-size: 14px;
  line-height: 1.75;
  color: var(--gray);
}

/* ============ 通用章节 ============ */
.page-about .about-section {
  margin-top: 44px;
  padding-top: 32px;
  border-top: var(--bd-thin) solid var(--ice-deep);
}

.page-about .about-split {
  display: grid;
  gap: 26px;
}

.page-about .about-split__aside {
  padding: 16px 18px;
  border: var(--bd-thin) solid var(--ink);
  border-top: 6px solid var(--river);
  background: var(--white);
  box-shadow: var(--shadow-sm);
}

.page-about .about-note-title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--river);
  text-transform: uppercase;
}

.page-about .about-note {
  font-size: 13px;
  line-height: 1.9;
  color: var(--gray);
}

.page-about .about-swatches {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-swatches li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--gray);
}

.page-about .about-swatches strong {
  color: var(--ink);
  font-weight: 700;
}

.page-about .about-swatch {
  flex: 0 0 auto;
  width: 18px;
  height: 18px;
  margin-top: 3px;
  border: 2px solid var(--ink);
}

.page-about .about-swatch--ice { background: var(--ice); }
.page-about .about-swatch--felt { background: var(--felt); }
.page-about .about-swatch--chip { background: var(--chip); }
.page-about .about-swatch--river { background: var(--river); }
.page-about .about-swatch--cinnabar { background: var(--cinnabar); }

/* ============ 母题三卡 ============ */
.page-about .about-motifs {
  display: grid;
  gap: 14px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-motif {
  padding: 16px 16px 18px;
  border: var(--bd-thin) solid var(--ink);
  background: var(--white);
  box-shadow: var(--shadow-sm);
  transition: transform 0.16s var(--ease), box-shadow 0.16s var(--ease), border-color 0.16s var(--ease);
}

.page-about .about-motif:hover,
.page-about .about-motif:focus-within {
  transform: translateY(-2px);
  border-color: var(--chip);
  box-shadow: var(--shadow-md);
}

.page-about .about-motif .index-num {
  display: block;
  margin-bottom: 8px;
  color: var(--river);
}

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

/* ============ 时间线 ============ */
.page-about .about-section--timeline {
  padding: 32px 0 34px;
  padding-inline: 0;
  background: linear-gradient(180deg, var(--ice) 0%, var(--ice-deep) 100%);
  border-top: var(--bd-thin) solid var(--ink);
  border-bottom: var(--bd-thin) solid var(--ink);
}

.page-about .about-timeline-head {
  display: grid;
  gap: 20px;
  padding: 0 2px;
}

.page-about .about-timeline-lede {
  max-width: 56ch;
  font-size: 15px;
  color: var(--gray);
}

.page-about .about-timeline-figure {
  border: var(--bd-thin) solid var(--ink);
  box-shadow: var(--shadow-sm);
}

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

.page-about .about-crack {
  display: none;
  width: 100%;
  height: 40px;
  margin: 14px 0 4px;
  color: var(--mist);
}

.page-about .about-timeline {
  overflow-x: auto;
  overflow-y: hidden;
  padding: 16px 2px 10px;
  scrollbar-color: var(--river) var(--ice-deep);
  scrollbar-width: thin;
}

.page-about .about-track {
  display: flex;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-node {
  flex: 0 0 232px;
  padding: 14px 16px 18px;
  border: var(--bd-thin) solid var(--ink);
  border-top: 7px solid var(--river);
  background: var(--white);
  box-shadow: var(--shadow-sm);
  transition: transform 0.16s var(--ease), box-shadow 0.16s var(--ease), border-color 0.16s var(--ease);
}

.page-about .about-node:hover,
.page-about .about-node:focus-within {
  transform: translateY(-2px);
  border-color: var(--chip);
  border-top-color: var(--chip);
  box-shadow: var(--shadow-md);
}

.page-about .about-node__year {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 700;
  line-height: 1;
  color: var(--felt);
}

.page-about .about-node h3 {
  font-size: 17px;
}

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

/* ============ 团队牌架 ============ */
.page-about .about-rack {
  display: grid;
  gap: 10px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-rack li {
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-areas:
    "slot name"
    "slot desc";
  gap: 2px 14px;
  padding: 12px 14px;
  border: var(--bd-thin) solid var(--ink);
  border-left: 7px solid var(--chip);
  background: var(--white);
  box-shadow: var(--shadow-sm);
  transition: transform 0.16s var(--ease), border-left-color 0.16s var(--ease);
}

.page-about .about-rack li:hover,
.page-about .about-rack li:focus-within {
  transform: translateY(-2px);
  border-left-color: var(--river);
}

.page-about .about-rack__slot {
  grid-area: slot;
  align-self: center;
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 700;
  color: var(--river);
}

.page-about .about-rack strong {
  grid-area: name;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 800;
}

.page-about .about-rack__desc {
  grid-area: desc;
  font-size: 14px;
  line-height: 1.7;
  color: var(--gray);
}

.page-about .about-team-figure {
  border: var(--bd-thin) solid var(--ink);
  margin-bottom: 12px;
}

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

/* ============ 内容分布 ============ */
.page-about .about-section--ledger {
  margin-top: 44px;
  padding: 30px 20px 34px;
  border: var(--bd) solid var(--ink);
  background: var(--white);
  box-shadow: var(--shadow-md);
}

.page-about .about-ledger-wrap {
  display: grid;
  gap: 26px;
}

.page-about .about-ledger {
  display: grid;
  gap: 0;
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-ledger li {
  display: grid;
  grid-template-columns: 1fr auto;
  grid-template-areas:
    "name num"
    "bar bar";
  gap: 8px 12px;
  padding: 13px 0;
  border-bottom: 2px dashed var(--mist-light);
}

.page-about .about-ledger__name {
  grid-area: name;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 800;
}

.page-about .about-ledger__num {
  grid-area: num;
  align-self: center;
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  color: var(--river);
}

.page-about .about-ledger__bar {
  grid-area: bar;
  display: block;
  height: 10px;
  border: 2px solid var(--ink);
  background: var(--ice);
}

.page-about .about-ledger__bar i {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--river), var(--chip));
}

.page-about .about-ledger li:nth-child(1) .about-ledger__bar i { width: 100%; }
.page-about .about-ledger li:nth-child(2) .about-ledger__bar i { width: 77%; }
.page-about .about-ledger li:nth-child(3) .about-ledger__bar i { width: 65%; }
.page-about .about-ledger li:nth-child(4) .about-ledger__bar i { width: 60%; }
.page-about .about-ledger li:nth-child(5) .about-ledger__bar i { width: 94%; }

.page-about .about-ledger-aside {
  padding: 16px 18px;
  border: var(--bd-thin) solid var(--ink);
  background: var(--ice);
}

.page-about .about-rhythm-big {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 40px;
  font-weight: 700;
  line-height: 1;
  color: var(--ink);
}

.page-about .about-rhythm-big span {
  margin-left: 6px;
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 400;
  color: var(--gray);
}

.page-about .about-ledger-aside .btn {
  margin-top: 6px;
}

/* ============ 合作生态 ============ */
.page-about .about-section--partners {
  padding: 30px 20px 34px;
  background: var(--felt);
  border-top: var(--bd) solid var(--ink);
  border-bottom: var(--bd) solid var(--ink);
  color: var(--white);
}

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

.page-about .about-section--partners h2 {
  color: var(--white);
}

.page-about .about-section--partners .eyebrow {
  color: var(--gold-soft);
}

.page-about .about-partners-lede {
  max-width: 60ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--ice-deep);
}

.page-about .about-partner-grid {
  display: grid;
  gap: 14px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-partner-card {
  padding: 16px 16px 18px;
  background: var(--white);
  color: var(--ink);
  border: var(--bd-thin) solid var(--ink);
  box-shadow: var(--shadow-felt);
}

.page-about .about-partner-card .index-num {
  display: block;
  margin-bottom: 8px;
  color: var(--cinnabar);
}

.page-about .about-partner-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--gray);
}

/* ============ 结尾联络 ============ */
.page-about .about-cta {
  display: grid;
  gap: 22px;
  margin-top: 40px;
  padding: 26px 20px 30px;
  border: var(--bd) solid var(--ink);
  background: linear-gradient(135deg, var(--gold-soft) 0%, var(--ice) 62%, var(--ice-deep) 100%);
  box-shadow: var(--shadow-md);
}

.page-about .about-cta h2 {
  font-size: clamp(24px, 5vw, 34px);
}

.page-about .about-cta__body p {
  max-width: 60ch;
  font-size: 15px;
  color: var(--ink);
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 16px;
}

.page-about .about-cta__aside {
  padding-top: 16px;
  border-top: var(--bd-thin) solid var(--ink);
}

.page-about .about-cta__label {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--felt);
}

.page-about .about-cta__text {
  margin: 0 0 4px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--gray);
  word-break: break-word;
}

/* ============ 平板及以上 ============ */
@media (min-width: 760px) {
  .page-about {
    padding-top: 32px;
  }

  .page-about .about-masthead {
    grid-template-columns: minmax(0, 1.55fr) minmax(260px, 0.85fr);
    align-items: start;
    gap: 32px;
  }

  .page-about .about-masthead h1 {
    transform: skewX(-1.5deg);
    transform-origin: left bottom;
  }

  .page-about .about-split {
    grid-template-columns: minmax(0, 1.5fr) minmax(240px, 0.9fr);
    align-items: start;
    gap: 30px;
  }

  .page-about .about-split--reverse .about-split__main {
    order: 1;
  }

  .page-about .about-split--reverse .about-split__aside {
    order: 2;
  }

  .page-about .about-motifs {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
  }

  .page-about .about-timeline-head {
    grid-template-columns: minmax(0, 1fr) minmax(280px, 0.9fr);
    align-items: end;
  }

  .page-about .about-crack {
    display: block;
  }

  .page-about .about-node {
    flex: 0 0 258px;
  }

  .page-about .about-ledger-wrap {
    grid-template-columns: minmax(0, 1.6fr) minmax(220px, 0.85fr);
    gap: 32px;
    align-items: start;
  }

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

  .page-about .about-cta {
    grid-template-columns: minmax(0, 1.7fr) minmax(200px, 0.8fr);
    align-items: start;
    gap: 28px;
    padding: 32px 28px 36px;
  }

  .page-about .about-cta__aside {
    padding-top: 0;
    padding-left: 20px;
    border-top: 0;
    border-left: var(--bd-thin) solid var(--ink);
  }
}

/* ============ 桌面 ============ */
@media (min-width: 1024px) {
  .page-about .about-section {
    margin-top: 56px;
    padding-top: 40px;
  }

  .page-about .about-section--timeline {
    padding-bottom: 42px;
  }

  .page-about .about-section--ledger,
  .page-about .about-section--partners {
    padding: 38px 36px 42px;
  }

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

  .page-about .about-node {
    flex: 0 0 280px;
  }

  .page-about .about-figures__num {
    font-size: 27px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-motif,
  .page-about .about-node,
  .page-about .about-rack li {
    transition: none;
  }

  .page-about .about-motif:hover,
  .page-about .about-node:hover,
  .page-about .about-rack li:hover {
    transform: none;
  }
}
<<<END>>>