.page-about {
  --ab-accent: var(--cz-red);
  --ab-chapter-gap: clamp(40px, 7vw, 88px);
  --ab-sticky-top: 108px;
  position: relative;
  background: var(--cz-cream);
  color: var(--cz-ink);
  padding-bottom: clamp(48px, 8vw, 96px);
  overflow-x: clip;
}

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

/* ---------- 首屏 ---------- */

.page-about .ab-hero {
  position: relative;
  padding: clamp(20px, 3vw, 32px) 0 clamp(28px, 5vw, 56px);
  background:
    radial-gradient(78% 62% at 12% 6%, rgba(193, 18, 31, 0.22), transparent 62%),
    radial-gradient(66% 52% at 92% 0%, rgba(38, 224, 200, 0.16), transparent 60%),
    linear-gradient(180deg, var(--cz-paper), var(--cz-cream));
  border-bottom: 1px solid var(--cz-line-gold);
}

.page-about .ab-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(21, 17, 14, 0.16) 1px, transparent 1px);
  background-size: 5px 5px;
  opacity: 0.3;
  pointer-events: none;
}

.page-about .ab-hero__inner {
  position: relative;
  z-index: 1;
}

.page-about .ab-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 48px);
  margin-top: clamp(16px, 3vw, 28px);
  align-items: center;
}

.page-about .ab-hero__title {
  margin: 0 0 14px;
  line-height: 1.12;
}

.page-about .ab-hero__lead {
  margin: 0 0 clamp(18px, 3vw, 28px);
  max-width: 36em;
}

.page-about .ab-hero__facts {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-about .ab-fact {
  flex: 1 1 128px;
  min-width: 0;
  padding: 12px 14px;
  background: var(--cz-glass);
  border: 1px solid var(--cz-line-gold);
  border-radius: var(--cz-r-sm);
  backdrop-filter: blur(6px);
  display: grid;
  gap: 2px;
}

.page-about .ab-fact__num {
  font-size: clamp(20px, 2.6vw, 26px);
  line-height: 1.1;
  color: var(--cz-red-dark);
}

.page-about .ab-fact__label {
  font-family: var(--cz-font-serif);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--cz-ink-mute);
}

.page-about .ab-hero__figure {
  margin: 0;
  border-radius: var(--cz-r-lg);
  overflow: hidden;
  background: var(--cz-ink);
  box-shadow: var(--cz-shadow-2);
  border: 1px solid var(--cz-line-gold);
  transform: rotate(-1.2deg);
}

.page-about .ab-hero__figure img {
  width: 100%;
  aspect-ratio: 1400 / 800;
  object-fit: cover;
}

.page-about .ab-hero__caption {
  display: block;
  padding: 10px 16px;
  background: var(--cz-ink);
  color: var(--cz-gold);
  font-family: var(--cz-font-serif);
  font-size: 13px;
  letter-spacing: 0.05em;
}

/* ---------- 双栏骨架 ---------- */

.page-about .ab-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 48px);
  margin-top: clamp(32px, 6vw, 64px);
}

.page-about .ab-toc {
  min-width: 0;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--cz-line-gold);
}

.page-about .ab-toc__label {
  margin: 0 0 10px;
  font-family: var(--cz-font-serif);
  font-size: 12px;
  letter-spacing: 0.24em;
  color: var(--cz-ink-mute);
  text-transform: uppercase;
}

.page-about .ab-toc__list {
  list-style: none;
  margin: 0;
  padding: 0 0 6px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-about .ab-toc__link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  flex: 0 0 auto;
  padding: 7px 12px;
  border-radius: 999px;
  border: 1px solid transparent;
  background: rgba(21, 17, 14, 0.05);
  color: var(--cz-ink-soft);
  font-size: 14px;
  line-height: 1.3;
  text-decoration: none;
  white-space: nowrap;
  transition: background 140ms var(--cz-ease), color 140ms var(--cz-ease), border-color 140ms var(--cz-ease);
}

.page-about .ab-toc__link:hover,
.page-about .ab-toc__link:focus-visible {
  background: rgba(193, 18, 31, 0.1);
  color: var(--cz-red-dark);
  border-color: rgba(193, 18, 31, 0.28);
}

.page-about .ab-toc__no {
  font-size: 12px;
  color: var(--cz-gold-dark);
}

.page-about .ab-toc__link:focus-visible {
  outline: 2px solid var(--cz-cyan);
  outline-offset: 2px;
}

.page-about .ab-body {
  min-width: 0;
}

/* ---------- 章节 ---------- */

.page-about .ab-chapter {
  position: relative;
  scroll-margin-top: var(--ab-sticky-top);
  padding-top: clamp(22px, 4vw, 40px);
}

.page-about .ab-body > .ab-chapter + .ab-chapter {
  margin-top: var(--ab-chapter-gap);
  border-top: 1px solid var(--cz-line-gold);
}

.page-about .ab-body > .ab-chapter:nth-child(1) { --ab-accent: var(--cz-red); }
.page-about .ab-body > .ab-chapter:nth-child(2) { --ab-accent: var(--cz-gold); }
.page-about .ab-body > .ab-chapter:nth-child(3) { --ab-accent: var(--cz-cyan-deep); }
.page-about .ab-body > .ab-chapter:nth-child(4) { --ab-accent: var(--cz-verdigris); }
.page-about .ab-body > .ab-chapter:nth-child(5) { --ab-accent: var(--cz-purple); }
.page-about .ab-body > .ab-chapter:nth-child(6) { --ab-accent: var(--cz-red-dark); }
.page-about .ab-body > .ab-chapter:nth-child(7) { --ab-accent: var(--cz-red); }

.page-about .ab-chapter__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding-left: 14px;
  border-left: 4px solid var(--ab-accent);
  margin-bottom: clamp(14px, 2.4vw, 22px);
}

.page-about .ab-chapter__no {
  font-size: 14px;
  color: var(--ab-accent);
  letter-spacing: 0.1em;
}

.page-about .ab-chapter__title {
  margin: 0;
  line-height: 1.2;
}

.page-about .ab-chapter__lead {
  font-size: clamp(17px, 2vw, 19px);
  line-height: 1.75;
  color: var(--cz-ink-soft);
  max-width: 38em;
  margin: 0 0 16px;
}

.page-about .ab-chapter p {
  line-height: 1.78;
  max-width: 38em;
  margin: 0 0 14px;
}

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

.page-about .ab-chapter a {
  color: var(--cz-red-dark);
  text-decoration: underline;
  text-decoration-color: rgba(154, 116, 42, 0.6);
  text-underline-offset: 3px;
}

.page-about .ab-chapter a:hover {
  color: var(--cz-red);
}

/* ---------- 通用图 ---------- */

.page-about .ab-figure {
  margin: clamp(20px, 3vw, 30px) 0;
  border-radius: var(--cz-r);
  overflow: hidden;
  background: var(--cz-paper);
  border: 1px solid var(--cz-line-gold);
  box-shadow: var(--cz-shadow-1);
}

.page-about .ab-figure img {
  width: 100%;
  aspect-ratio: 1000 / 600;
  object-fit: cover;
}

.page-about .ab-figure--wide img {
  aspect-ratio: 900 / 700;
}

.page-about .ab-figure__caption {
  padding: 10px 14px;
  font-family: var(--cz-font-serif);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--cz-ink-mute);
  background: var(--cz-paper);
  border-top: 1px solid var(--cz-line);
}

/* ---------- 时间轴 ---------- */

.page-about .ab-timeline {
  list-style: none;
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 0 0 0 30px;
  position: relative;
  display: grid;
  gap: clamp(16px, 2.6vw, 26px);
}

.page-about .ab-timeline::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--cz-red), var(--cz-gold) 52%, var(--cz-cyan));
  opacity: 0.7;
}

.page-about .ab-timeline__item {
  position: relative;
}

.page-about .ab-timeline__item::before {
  content: "";
  position: absolute;
  left: -30px;
  top: 5px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--cz-paper);
  border: 3px solid var(--cz-red);
  box-shadow: 0 0 0 3px rgba(193, 18, 31, 0.12);
}

.page-about .ab-timeline__item--now::before {
  border-color: var(--cz-cyan-deep);
  box-shadow: 0 0 0 3px rgba(38, 224, 200, 0.22);
}

.page-about .ab-timeline__year {
  display: block;
  font-size: 15px;
  letter-spacing: 0.08em;
  color: var(--cz-red-dark);
  margin-bottom: 4px;
}

.page-about .ab-timeline__title {
  margin: 0 0 4px;
}

.page-about .ab-timeline__body p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.72;
  color: var(--cz-ink-soft);
}

/* ---------- 三条规矩 ---------- */

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

.page-about .ab-rule {
  position: relative;
  padding: clamp(16px, 2.6vw, 24px);
  background: var(--cz-paper);
  border: 1px solid var(--cz-line);
  border-left: 4px solid var(--cz-red);
  border-radius: var(--cz-r-sm);
  box-shadow: var(--cz-shadow-1);
  transform: rotate(-0.6deg);
  transition: transform 200ms var(--cz-ease), box-shadow 200ms var(--cz-ease);
}

.page-about .ab-rule:nth-child(2) { border-left-color: var(--cz-gold); transform: rotate(0.6deg); }
.page-about .ab-rule:nth-child(3) { border-left-color: var(--cz-cyan-deep); }

.page-about .ab-rule:hover {
  transform: rotate(0deg) translateY(-2px);
  box-shadow: var(--cz-shadow-2);
}

.page-about .ab-rule__no {
  display: block;
  font-size: 13px;
  letter-spacing: 0.16em;
  color: var(--cz-gold-dark);
  margin-bottom: 6px;
}

.page-about .ab-rule__title {
  margin: 0 0 8px;
}

.page-about .ab-rule p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.74;
}

/* ---------- 六段位 ---------- */

.page-about .ab-ranks {
  list-style: none;
  margin: clamp(18px, 3vw, 28px) 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-about .ab-rank {
  display: grid;
  grid-template-columns: 74px minmax(0, 1fr) auto;
  align-items: center;
  gap: 10px;
}

.page-about .ab-rank__name {
  font-size: 13px;
  text-align: center;
  padding: 5px 6px;
}

.page-about .ab-rank__track {
  display: block;
  height: 30px;
  border-radius: 4px;
  background: rgba(21, 17, 14, 0.07);
  overflow: hidden;
  border: 1px solid var(--cz-line);
}

.page-about .ab-rank__bar {
  display: block;
  height: 100%;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--cz-red-dark), var(--cz-red) 55%, var(--cz-gold));
  transition: filter 200ms var(--cz-ease);
}

.page-about .ab-rank:nth-child(1) .ab-rank__bar { width: 26%; }
.page-about .ab-rank:nth-child(2) .ab-rank__bar { width: 38%; }
.page-about .ab-rank:nth-child(3) .ab-rank__bar { width: 50%; }
.page-about .ab-rank:nth-child(4) .ab-rank__bar { width: 62%; }
.page-about .ab-rank:nth-child(5) .ab-rank__bar { width: 80%; }
.page-about .ab-rank:nth-child(6) .ab-rank__bar { width: 100%; }

.page-about .ab-rank:hover .ab-rank__bar {
  filter: brightness(1.12) saturate(1.15);
}

.page-about .ab-rank__range {
  font-size: 12.5px;
  color: var(--cz-ink-mute);
  white-space: nowrap;
}

.page-about .ab-ranks__note {
  margin-top: clamp(18px, 3vw, 26px);
  padding: clamp(16px, 2.6vw, 22px);
  background: var(--cz-paper);
  border: 1px solid var(--cz-line-gold);
  border-radius: var(--cz-r-sm);
  box-shadow: var(--cz-shadow-1);
}

.page-about .ab-ranks__note p {
  margin: 0 0 12px;
  font-size: 15.5px;
}

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

/* ---------- 本地数据 ---------- */

.page-about .ab-stats {
  list-style: none;
  margin: clamp(18px, 3vw, 26px) 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(132px, 1fr));
  gap: 10px;
}

.page-about .ab-stat {
  padding: 14px 14px 12px;
  background: var(--cz-ink);
  color: var(--cz-paper);
  border-radius: var(--cz-r-sm);
  border: 1px solid rgba(231, 178, 76, 0.28);
  display: grid;
  gap: 4px;
}

.page-about .ab-stat:nth-child(3n + 2) {
  background: var(--cz-red-dark);
}

.page-about .ab-stat__num {
  font-size: clamp(20px, 2.6vw, 25px);
  line-height: 1.1;
  color: var(--cz-gold);
}

.page-about .ab-stat__label {
  font-size: 13px;
  letter-spacing: 0.04em;
  color: rgba(253, 248, 236, 0.82);
}

/* ---------- 色板 ---------- */

.page-about .ab-palette {
  list-style: none;
  margin: clamp(18px, 3vw, 26px) 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 10px;
}

.page-about .ab-swatch {
  padding: 10px;
  background: var(--cz-paper);
  border: 1px solid var(--cz-line);
  border-radius: var(--cz-r-sm);
  display: grid;
  gap: 6px;
  transform: rotate(-1.5deg);
  transition: transform 200ms var(--cz-ease);
}

.page-about .ab-swatch:nth-child(even) {
  transform: rotate(1.5deg);
}

.page-about .ab-swatch:hover {
  transform: rotate(0deg) translateY(-2px);
}

.page-about .ab-swatch__chip {
  display: block;
  height: 56px;
  border-radius: 4px;
}

.page-about .ab-swatch:nth-child(1) .ab-swatch__chip { background: #C1121F; }
.page-about .ab-swatch:nth-child(2) .ab-swatch__chip { background: #E7B24C; }
.page-about .ab-swatch:nth-child(3) .ab-swatch__chip { background: #15110E; }
.page-about .ab-swatch:nth-child(4) .ab-swatch__chip { background: #26E0C8; }
.page-about .ab-swatch:nth-child(5) .ab-swatch__chip { background: #6E4BD1; }
.page-about .ab-swatch:nth-child(6) .ab-swatch__chip { background: #2C7A6B; }

.page-about .ab-swatch__name {
  font-size: 14px;
  color: var(--cz-ink-soft);
}

.page-about .ab-swatch__hex {
  font-size: 12px;
  color: var(--cz-ink-mute);
}

/* ---------- 折叠面板 ---------- */

.page-about .ab-details {
  margin: clamp(18px, 3vw, 26px) 0;
  background: var(--cz-paper);
  border: 1px solid var(--cz-line-gold);
  border-radius: var(--cz-r-sm);
  overflow: hidden;
}

.page-about .ab-details__summary {
  cursor: pointer;
  list-style: none;
  padding: 14px 16px;
  font-family: var(--cz-font-display);
  font-weight: 900;
  font-size: 15.5px;
  letter-spacing: 0.02em;
  color: var(--cz-ink);
  background: linear-gradient(90deg, rgba(193, 18, 31, 0.09), rgba(231, 178, 76, 0.12));
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.page-about .ab-details__summary::-webkit-details-marker {
  display: none;
}

.page-about .ab-details__summary::after {
  content: "＋";
  font-family: var(--cz-font-mono);
  color: var(--cz-red-dark);
  font-size: 15px;
}

.page-about .ab-details[open] .ab-details__summary::after {
  content: "－";
}

.page-about .ab-details__summary:focus-visible {
  outline: 2px solid var(--cz-cyan);
  outline-offset: -2px;
}

.page-about .ab-details__list {
  margin: 0;
  padding: 14px 16px 16px 34px;
  display: grid;
  gap: 8px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--cz-ink-soft);
}

.page-about .ab-details__list strong {
  color: var(--cz-red-dark);
}

/* ---------- 收尾 ---------- */

.page-about .ab-chapter--last {
  padding-bottom: clamp(8px, 2vw, 16px);
}

.page-about .ab-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: clamp(16px, 3vw, 24px) 0;
}

.page-about .ab-contact {
  margin-top: clamp(18px, 3vw, 26px);
  padding: clamp(16px, 2.6vw, 24px);
  background: var(--cz-glass);
  border: 1px solid var(--cz-line-gold);
  border-radius: var(--cz-r);
  backdrop-filter: blur(8px);
}

.page-about .ab-contact__intro {
  margin: 0 0 12px;
  font-family: var(--cz-font-serif);
  font-size: 14px;
  letter-spacing: 0.08em;
  color: var(--cz-ink-mute);
}

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

.page-about .ab-contact__list li {
  display: grid;
  grid-template-columns: 84px minmax(0, 1fr);
  gap: 10px;
  align-items: baseline;
}

.page-about .ab-contact__label {
  font-size: 13px;
  color: var(--cz-ink-mute);
}

.page-about .ab-contact__value {
  font-family: var(--cz-font-mono);
  font-size: 15px;
  color: var(--cz-ink);
  text-decoration: none;
  word-break: break-all;
}

.page-about a.ab-contact__value:hover {
  color: var(--cz-red);
  text-decoration: underline;
}

.page-about .ab-contact__note {
  margin: 14px 0 0;
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--cz-ink-mute);
}

/* ---------- 响应式 ---------- */

@media (max-width: 599px) {
  .page-about .ab-rank {
    grid-template-columns: 62px minmax(0, 1fr) auto;
    gap: 8px;
  }

  .page-about .ab-rank__track {
    height: 24px;
  }

  .page-about .ab-rank__range {
    font-size: 11.5px;
  }

  .page-about .ab-contact__list li {
    grid-template-columns: minmax(0, 1fr);
    gap: 3px;
  }
}

@media (min-width: 900px) {
  .page-about .ab-hero__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr);
  }
}

@media (min-width: 1024px) {
  .page-about .ab-shell {
    grid-template-columns: 232px minmax(0, 1fr);
    align-items: start;
  }

  .page-about .ab-toc {
    position: sticky;
    top: var(--ab-sticky-top);
    border-bottom: 0;
    border-left: 1px solid var(--cz-line-gold);
    padding: 4px 0 4px 14px;
  }

  .page-about .ab-toc__list {
    flex-direction: column;
    gap: 4px;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-about .ab-toc__link {
    display: flex;
    width: 100%;
    border-radius: 0 var(--cz-r-sm) var(--cz-r-sm) 0;
    background: transparent;
    padding: 8px 10px 8px 12px;
    white-space: normal;
    line-height: 1.4;
    border-left: 2px solid transparent;
    border-top-color: transparent;
    border-right-color: transparent;
    border-bottom-color: transparent;
  }

  .page-about .ab-toc__link:hover,
  .page-about .ab-toc__link:focus-visible {
    background: rgba(193, 18, 31, 0.08);
    border-left-color: var(--cz-red);
  }

  .page-about:has(#ab-s1:target) .ab-toc__link[href="#ab-s1"],
  .page-about:has(#ab-s2:target) .ab-toc__link[href="#ab-s2"],
  .page-about:has(#ab-s3:target) .ab-toc__link[href="#ab-s3"],
  .page-about:has(#ab-s4:target) .ab-toc__link[href="#ab-s4"],
  .page-about:has(#ab-s5:target) .ab-toc__link[href="#ab-s5"],
  .page-about:has(#ab-s6:target) .ab-toc__link[href="#ab-s6"],
  .page-about:has(#ab-s7:target) .ab-toc__link[href="#ab-s7"] {
    background: rgba(193, 18, 31, 0.1);
    border-left-color: var(--cz-red);
    color: var(--cz-red-dark);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about *,
  .page-about *::before,
  .page-about *::after {
    transition-duration: 0.01ms !important;
  }
}
<<<END>>>