.page-about {
  --about-line: rgba(242, 200, 121, 0.26);
  --about-line-soft: rgba(242, 200, 121, 0.14);
  --about-dim: rgba(246, 239, 227, 0.76);
  --about-dim-2: rgba(246, 239, 227, 0.58);
  background: var(--ink);
  color: var(--paper);
  padding-bottom: clamp(36px, 6vw, 80px);
  overflow-x: clip;
}

.page-about .breadcrumb {
  padding-top: clamp(16px, 3vw, 28px);
  color: var(--about-dim-2);
  font-size: 13px;
  letter-spacing: 0.04em;
}

.page-about .breadcrumb a {
  color: var(--gold-line);
  text-decoration: none;
}

.page-about .breadcrumb a:hover {
  color: var(--gold);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding: clamp(20px, 3.5vw, 40px) 0 clamp(32px, 6vw, 72px);
}

.page-about .hero-grid {
  display: grid;
  gap: clamp(22px, 4vw, 46px);
}

.page-about .hero-copy h1 {
  font-family: var(--font-head);
  font-weight: 800;
  letter-spacing: 0.02em;
  line-height: 1.14;
  font-size: clamp(30px, 5.2vw, 56px);
  margin: 10px 0 18px;
  color: var(--paper);
  text-shadow: 0 0 0 transparent;
}

.page-about .eyebrow {
  color: var(--gold);
  font-size: 12px;
  letter-spacing: 0.3em;
  text-transform: none;
  margin: 0;
}

.page-about .lede {
  color: var(--about-dim);
  font-size: 17px;
  line-height: 1.8;
  max-width: 34ch;
  margin: 0;
}

.page-about .hero-plate {
  background: var(--paper);
  color: var(--deep);
  border: 1px solid var(--edge);
  border-radius: 12px;
  padding: clamp(20px, 3vw, 28px);
  box-shadow: var(--shadow-paper);
}

.page-about .plate-quote {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(19px, 2.4vw, 24px);
  line-height: 1.5;
  letter-spacing: 0.01em;
  margin: 0 0 14px;
  color: var(--ink);
}

.page-about .plate-meta {
  font-size: 13px;
  line-height: 1.7;
  color: rgba(11, 21, 18, 0.72);
  margin: 0 0 18px;
  padding-top: 14px;
  border-top: 1px dashed var(--edge);
}

.page-about .plate-meta .ver {
  font-family: var(--font-mono);
  background: var(--gold);
  color: var(--deep);
  border-radius: 999px;
  padding: 1px 8px;
  font-size: 13px;
  font-weight: 700;
}

.page-about .hero-plate .link-arrow {
  color: var(--ink);
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  border-bottom: 2px solid var(--gold);
  padding-bottom: 2px;
}

.page-about .hero-plate .link-arrow:hover {
  color: var(--gold);
}

.page-about .about-figure {
  margin: 0;
  overflow: hidden;
  border-radius: 14px;
  border: 1px solid var(--about-line);
  background: linear-gradient(150deg, var(--ink-2), var(--ink));
  box-shadow: var(--shadow-paper);
}

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

.page-about .hero-figure {
  margin-top: clamp(26px, 4.5vw, 52px);
  aspect-ratio: 2 / 1;
}

.page-about .hero-figure img {
  height: 100%;
}

/* ---------- 品牌主张 ---------- */
.page-about .section {
  padding: clamp(46px, 7vw, 96px) 0 0;
}

.page-about .statement-grid {
  display: grid;
  gap: clamp(20px, 4vw, 48px);
  border-top: 1px solid var(--about-line-soft);
  padding-top: clamp(24px, 4vw, 40px);
}

.page-about .statement-lead h2,
.page-about .section-head h2 {
  font-family: var(--font-head);
  font-weight: 800;
  letter-spacing: 0.02em;
  line-height: 1.25;
  font-size: clamp(24px, 3.4vw, 34px);
  margin: 8px 0 12px;
  color: var(--paper);
}

.page-about .statement-lead h2 {
  margin-top: 0;
}

.page-about .annotation-side {
  writing-mode: vertical-rl;
  letter-spacing: 0.34em;
  font-size: 12px;
  color: var(--about-dim-2);
  border-left: 1px solid var(--about-line);
  padding-left: 10px;
  margin: 0;
  height: 132px;
  display: none;
}

.page-about .statement-body p {
  color: var(--about-dim);
  font-size: 16px;
  line-height: 1.85;
  margin: 0 0 16px;
  max-width: 36ch;
}

.page-about .statement-body .statement-quote {
  margin: 22px 0 0;
  color: var(--gold-line);
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 18px;
  line-height: 1.6;
  padding-left: 16px;
  border-left: 3px solid var(--gold);
}

/* ---------- 时间线 ---------- */
.page-about .section-head .lede {
  max-width: 44ch;
}

.page-about .axis {
  list-style: none;
  margin: clamp(26px, 4vw, 44px) 0 0;
  padding: 0 0 0 30px;
  position: relative;
}

.page-about .axis::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 12px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, var(--gold), rgba(224, 138, 30, 0.12));
}

.page-about .axis-item {
  position: relative;
  padding: 0 0 clamp(26px, 4vw, 42px);
}

.page-about .axis-item::before {
  content: "";
  position: absolute;
  left: -30px;
  top: 8px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 0 4px rgba(224, 138, 30, 0.16);
}

.page-about .axis-year {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 700;
  color: var(--gold);
  letter-spacing: 0.08em;
}

.page-about .axis-title {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(18px, 2.4vw, 22px);
  line-height: 1.4;
  margin: 6px 0 8px;
  color: var(--paper);
}

.page-about .axis-text {
  color: var(--about-dim);
  font-size: 15px;
  line-height: 1.8;
  margin: 0;
  max-width: 42ch;
}

.page-about .axis-detail {
  margin-top: 12px;
  background: var(--ink-2);
  border: 1px solid var(--about-line-soft);
  border-radius: 10px;
  overflow: hidden;
  max-width: 44ch;
}

.page-about .axis-detail summary {
  cursor: pointer;
  list-style: none;
  padding: 10px 14px;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--gold-line);
  transition: background 220ms var(--ease);
}

.page-about .axis-detail summary::-webkit-details-marker {
  display: none;
}

.page-about .axis-detail summary::after {
  content: " +";
  color: var(--gold);
}

.page-about .axis-detail[open] summary::after {
  content: " −";
}

.page-about .axis-detail summary:hover {
  background: rgba(242, 200, 121, 0.08);
}

.page-about .axis-detail p {
  margin: 0;
  padding: 0 14px 14px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--about-dim);
}

.page-about .axis-detail summary:focus-visible {
  outline: 2px solid var(--gold-line);
  outline-offset: -2px;
}

.page-about .axis-figure {
  margin: clamp(8px, 2vw, 20px) 0 clamp(26px, 4vw, 44px);
}

.page-about .axis--lower {
  margin-top: 0;
}

/* ---------- 团队与节奏 ---------- */
.page-about .split {
  display: grid;
  gap: clamp(30px, 5vw, 56px);
  margin-top: clamp(26px, 4vw, 46px);
}

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

.page-about .fn-card {
  background: var(--paper);
  color: var(--deep);
  border: 1px solid var(--edge);
  border-radius: 12px;
  padding: clamp(18px, 3vw, 24px);
  box-shadow: var(--shadow-paper);
  transition: transform 240ms var(--ease), border-color 240ms var(--ease);
}

.page-about .fn-card:hover {
  transform: translateY(-2px);
  border-color: var(--gold-line);
}

.page-about .fn-num {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--deep);
  background: var(--gold);
  border-radius: 999px;
  padding: 2px 9px;
  margin-bottom: 10px;
}

.page-about .fn-card h3 {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 19px;
  margin: 0 0 8px;
  color: var(--ink);
}

.page-about .fn-card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(11, 21, 18, 0.78);
}

.page-about .crew-figure {
  border-radius: 12px;
  margin-top: 4px;
}

.page-about .rhythm-col {
  background: var(--ink-2);
  border: 1px solid var(--about-line);
  border-radius: 14px;
  padding: clamp(20px, 3.4vw, 30px);
}

.page-about .rhythm-title {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 20px;
  margin: 0 0 8px;
  color: var(--paper);
}

.page-about .rhythm-intro {
  margin: 0 0 18px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--about-dim-2);
}

.page-about .week-grid {
  list-style: none;
  margin: 0 0 22px;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(72px, 1fr));
  gap: 8px;
}

.page-about .week-cell {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 10px 8px;
  border-radius: 8px;
  background: rgba(246, 239, 227, 0.04);
  border: 1px solid var(--about-line-soft);
  transition: border-color 220ms var(--ease), background 220ms var(--ease);
}

.page-about .week-cell:hover,
.page-about .week-cell:focus-within {
  border-color: var(--gold-line);
  background: rgba(246, 239, 227, 0.07);
}

.page-about .week-cell--cyan {
  border-color: rgba(44, 124, 140, 0.7);
  background: rgba(44, 124, 140, 0.18);
}

.page-about .week-cell--cyan:hover,
.page-about .week-cell--cyan:focus-within {
  border-color: var(--cyan);
  background: rgba(44, 124, 140, 0.28);
}

.page-about .week-day {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--about-dim-2);
}

.page-about .week-tag {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 15px;
  color: var(--paper);
}

.page-about .week-cell--cyan .week-tag {
  color: #9FD3DE;
}

.page-about .week-note {
  font-size: 11.5px;
  line-height: 1.6;
  color: var(--about-dim-2);
}

.page-about .rhythm-list {
  margin: 0;
  padding: 18px 0 0;
  border-top: 1px dashed var(--about-line);
}

.page-about .rhythm-row {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid rgba(242, 200, 121, 0.1);
}

.page-about .rhythm-row:last-child {
  border-bottom: 0;
}

.page-about .rhythm-row dt {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 14px;
  color: var(--gold-line);
  letter-spacing: 0.06em;
}

.page-about .rhythm-row dd {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--about-dim);
}

.page-about .rhythm-foot {
  margin: 16px 0 0;
  font-size: 14px;
  color: var(--about-dim-2);
}

.page-about .rhythm-foot .link-arrow {
  color: var(--gold-line);
  text-decoration: none;
  border-bottom: 1px solid var(--gold);
  margin-left: 2px;
}

.page-about .rhythm-foot .link-arrow:hover {
  color: var(--gold);
}

/* ---------- 数据带 ---------- */
.page-about .stat-band {
  margin-top: clamp(50px, 8vw, 104px);
  padding: clamp(36px, 5vw, 64px) 0;
  background: var(--ink-2);
  border-top: 1px solid var(--about-line);
  border-bottom: 1px solid var(--about-line);
}

.page-about .stat-band .section {
  padding: 0;
}

.page-about .stat-grid {
  list-style: none;
  margin: clamp(22px, 3.5vw, 38px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px 14px;
}

.page-about .stat-item {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding-left: 14px;
  border-left: 3px solid var(--gold);
}

.page-about .stat-num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(28px, 4.4vw, 46px);
  line-height: 1.1;
  color: var(--gold);
  letter-spacing: 0.01em;
}

.page-about .stat-unit {
  font-size: 0.5em;
  margin-left: 3px;
  color: var(--gold-line);
}

.page-about .stat-label {
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--about-dim-2);
}

.page-about .stat-note {
  margin: 22px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--about-dim);
  max-width: 46ch;
}

/* ---------- 收尾 ---------- */
.page-about .cta-strip {
  padding-bottom: clamp(10px, 2vw, 20px);
}

.page-about .cta-inner {
  display: grid;
  gap: 20px;
  border: 1px solid var(--gold-line);
  border-radius: 14px;
  padding: clamp(22px, 3.6vw, 36px);
  background: linear-gradient(135deg, rgba(224, 138, 30, 0.14), rgba(18, 36, 29, 0) 62%);
}

.page-about .cta-inner h2 {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(21px, 3vw, 28px);
  margin: 0 0 10px;
  color: var(--paper);
}

.page-about .cta-inner p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--about-dim);
  max-width: 40ch;
}

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

.page-about .cta-actions .btn {
  border-radius: 999px;
  padding: 11px 20px;
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
}

.page-about .cta-actions .btn--gold {
  background: var(--gold);
  color: var(--deep);
  border: 1px solid var(--gold);
}

.page-about .cta-actions .btn--gold:hover {
  background: var(--gold-line);
  border-color: var(--gold-line);
}

.page-about .cta-actions .btn--ghost {
  background: transparent;
  color: var(--paper);
  border: 1px solid var(--about-line);
}

.page-about .cta-actions .btn--ghost:hover {
  border-color: var(--gold-line);
  color: var(--gold-line);
}

.page-about .cta-actions .btn:focus-visible,
.page-about .breadcrumb a:focus-visible,
.page-about .rhythm-foot .link-arrow:focus-visible {
  outline: 2px solid var(--gold-line);
  outline-offset: 3px;
}

/* ---------- 断点 ---------- */
@media (min-width: 720px) {
  .page-about .statement-grid {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.5fr);
    align-items: start;
  }

  .page-about .annotation-side {
    display: block;
  }

  .page-about .axis {
    padding-left: 44px;
  }

  .page-about .axis::before {
    left: 9px;
  }

  .page-about .axis-item::before {
    left: -42px;
    width: 18px;
    height: 18px;
  }

  .page-about .axis-year {
    font-size: 22px;
  }

  .page-about .stat-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 24px;
  }
}

@media (min-width: 900px) {
  .page-about .hero-grid {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 0.85fr);
    align-items: end;
  }

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

  .page-about .crew-col {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    align-items: start;
    gap: 16px;
  }

  .page-about .fn-card:nth-child(1) {
    margin-top: 0;
  }

  .page-about .fn-card:nth-child(2) {
    margin-top: 26px;
  }

  .page-about .fn-card:nth-child(3) {
    margin-top: -8px;
  }

  .page-about .fn-card:nth-child(4) {
    margin-top: 18px;
  }

  .page-about .crew-figure {
    grid-column: 1 / -1;
    margin-top: 6px;
  }

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

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

@media (min-width: 1040px) {
  .page-about .statement-body {
    padding-left: 8px;
  }

  .page-about .axis-figure {
    margin-left: 44px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .fn-card,
  .page-about .week-cell,
  .page-about .axis-detail summary {
    transition: none;
  }

  .page-about .fn-card:hover {
    transform: none;
  }
}