.page-about {
  --ab-rail-w: 232px;
  --ab-paper-tint: #F5EFE3;
  background: var(--paper);
  color: var(--text-ink);
  font-family: var(--font-body);
}

/* ---------- 面包屑条 ---------- */
.page-about .ab-crumb {
  background: var(--paper);
  padding: 14px 0 4px;
  border-bottom: 1px solid var(--paper-line);
}

/* ---------- 首屏 ---------- */
.page-about .ab-hero {
  background: var(--ink);
  color: var(--paper);
  padding: 40px 0 52px;
  border-bottom: 1px solid var(--line-signal);
}

.page-about .ab-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 34px;
  align-items: start;
}

.page-about .ab-pulse {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 14px;
}
.page-about .ab-pulse i {
  display: block;
  background: var(--signal);
}
.page-about .ab-pulse i:nth-child(1),
.page-about .ab-pulse i:nth-child(3) {
  width: 7px;
  height: 7px;
}
.page-about .ab-pulse i:nth-child(2) {
  width: 36px;
  height: 2px;
}

.page-about .sk-eyebrow {
  margin: 0 0 10px;
}

.page-about .ab-hero__title {
  font-family: var(--font-display);
  font-size: clamp(28px, 7.4vw, 52px);
  line-height: 1.16;
  letter-spacing: 0.02em;
  color: var(--paper);
  margin: 0 0 18px;
  max-width: 15em;
}

.page-about .ab-hero__lead {
  font-size: 15.5px;
  line-height: 1.9;
  color: rgba(239, 231, 217, 0.84);
  margin: 0 0 14px;
  max-width: 36em;
}

.page-about .ab-hero__note {
  font-size: 14px;
  line-height: 1.8;
  color: var(--graphite);
  margin: 0;
  padding-left: 12px;
  border-left: 2px solid var(--wave);
  max-width: 32em;
}

.page-about .ab-card {
  background: var(--ink-2);
  border: 1px solid var(--line-signal);
  border-left: 3px solid var(--amber);
  padding: 20px 20px 22px;
}

.page-about .ab-card__title {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--graphite);
  margin: 0 0 4px;
}

.page-about .ab-facts {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
}
.page-about .ab-facts li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 2px 10px;
  padding: 11px 0;
  border-bottom: 1px dashed var(--line-dark);
}
.page-about .ab-facts li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}
.page-about .ab-facts__k {
  flex: 1 1 auto;
  font-family: var(--font-label);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--graphite);
}
.page-about .ab-facts__v {
  font-family: var(--font-mono);
  font-size: 20px;
  line-height: 1;
  color: var(--signal);
}
.page-about .ab-facts__u {
  font-size: 12px;
  color: var(--graphite);
}

/* ---------- 主体分栏 ---------- */
.page-about .ab-body {
  background: var(--paper);
  padding: 46px 0 60px;
}

.page-about .ab-body__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 40px;
}

.page-about .ab-rail {
  border-top: 2px solid var(--ink);
  padding-top: 14px;
}

.page-about .ab-rail__title {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--graphite);
  margin: 0 0 12px;
}

.page-about .ab-rail__list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--paper-line);
}
.page-about .ab-rail__list li {
  border-bottom: 1px solid var(--paper-line);
}
.page-about .ab-rail__list a {
  display: flex;
  gap: 12px;
  align-items: baseline;
  padding: 12px 2px;
  color: var(--text-ink);
  text-decoration: none;
  font-size: 14px;
  line-height: 1.5;
  transition: color var(--ease), background var(--ease);
}
.page-about .ab-rail__list a:hover,
.page-about .ab-rail__list a:focus-visible {
  color: var(--amber-deep);
  outline: none;
}
.page-about .ab-rail__list a:focus-visible {
  box-shadow: inset 0 0 0 2px var(--amber);
}
.page-about .ab-rail__list a[aria-current="true"] {
  color: var(--amber-deep);
}
.page-about .ab-rail__list a[aria-current="true"] .ab-rail__num {
  background: var(--amber);
  border-color: var(--amber);
  color: var(--ink);
}
.page-about .ab-rail__num {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  padding: 1px 5px;
  border: 1px solid var(--paper-line);
  color: var(--graphite);
  transition: background var(--ease), color var(--ease), border-color var(--ease);
}
.page-about .ab-rail__txt {
  min-width: 0;
}

.page-about .ab-rail__foot {
  font-size: 13px;
  line-height: 1.8;
  color: var(--graphite);
  margin: 16px 0 0;
}
.page-about .ab-rail__foot a {
  color: var(--amber-deep);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 章节 ---------- */
.page-about .ab-sec {
  padding-bottom: 48px;
  margin-bottom: 48px;
  border-bottom: 1px solid var(--paper-line);
}
.page-about .ab-sec:last-child {
  border-bottom: 0;
  padding-bottom: 0;
  margin-bottom: 0;
}

.page-about .ab-sec__title {
  font-family: var(--font-display);
  font-size: clamp(23px, 5vw, 34px);
  line-height: 1.28;
  letter-spacing: 0.02em;
  color: var(--ink);
  margin: 8px 0 16px;
  max-width: 20em;
}

.page-about .ab-p {
  font-size: 15px;
  line-height: 1.9;
  color: var(--text-ink);
  margin: 0 0 14px;
  max-width: 38em;
}
.page-about .ab-p a {
  color: var(--amber-deep);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color var(--ease);
}
.page-about .ab-p a:hover,
.page-about .ab-p a:focus-visible {
  color: var(--noise);
}
.page-about .ab-p--after {
  margin-top: 20px;
  padding-top: 18px;
  border-top: 1px dashed var(--paper-line);
  font-size: 14.5px;
}

.pager-about .ab-quote,
.page-about .ab-quote {
  margin: 24px 0 0;
  padding: 20px 0;
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
}
.page-about .ab-quote p {
  font-family: var(--font-display);
  font-size: clamp(18px, 3.6vw, 25px);
  line-height: 1.55;
  letter-spacing: 0.02em;
  color: var(--ink);
  margin: 0;
  max-width: 26em;
}

/* ---------- 时间线 ---------- */
.page-about .ab-timeline {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
}
.page-about .ab-timeline__item {
  position: relative;
  padding: 0 0 26px 24px;
  border-left: 1px solid var(--paper-line);
}
.page-about .ab-timeline__item:last-child {
  padding-bottom: 0;
}
.page-about .ab-timeline__item::before {
  content: "";
  position: absolute;
  left: -4.5px;
  top: 6px;
  width: 8px;
  height: 8px;
  background: var(--signal);
  transition: background var(--ease), transform var(--ease);
}
.page-about .ab-timeline__item:last-child::before {
  background: var(--amber);
}
.page-about .ab-timeline__item:hover::before {
  transform: scale(1.35);
}
.page-about .ab-timeline__phase {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--graphite);
  margin: 0 0 6px;
}
.page-about .ab-timeline__head {
  font-family: var(--font-display);
  font-size: 18.5px;
  line-height: 1.45;
  color: var(--ink);
  margin: 0 0 8px;
}
.page-about .ab-timeline__body {
  font-size: 14.5px;
  line-height: 1.88;
  color: var(--text-ink);
  margin: 0;
  max-width: 36em;
}

/* ---------- 团队 ---------- */
.page-about .ab-team {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
  margin-top: 24px;
}

.page-about .ab-roles {
  list-style: none;
  margin: 0;
  padding: 0;
}
.page-about .ab-roles li {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 14px;
  padding: 16px 0;
  border-top: 1px solid var(--paper-line);
}
.page-about .ab-roles li:last-child {
  border-bottom: 1px solid var(--paper-line);
}
.page-about .ab-roles__n {
  font-family: var(--font-mono);
  font-size: 22px;
  line-height: 1.2;
  color: var(--amber-deep);
}
.page-about .ab-roles__body h3 {
  font-family: var(--font-display);
  font-size: 17px;
  color: var(--ink);
  margin: 0 0 6px;
}
.page-about .ab-roles__body p {
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--text-ink);
  margin: 0;
  max-width: 34em;
}

/* ---------- 图形容器 ---------- */
.page-about .ab-figure {
  margin: 0;
  border: 1px solid var(--paper-line);
  background-color: var(--ink-2);
  background-image: radial-gradient(var(--line-dark) 1px, transparent 1px);
  background-size: 14px 14px;
}
.page-about .ab-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}
.page-about .ab-figure__cap {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.03em;
  line-height: 1.7;
  color: var(--graphite);
  background: var(--paper);
  border-top: 1px solid var(--paper-line);
  padding: 9px 12px;
}
.page-about .ab-figure--team img {
  aspect-ratio: 3 / 2;
}
.page-about .ab-figure--venue img {
  aspect-ratio: 10 / 7;
}
.page-about .ab-figure--band img {
  aspect-ratio: 14 / 9;
}

/* ---------- 场地 ---------- */
.page-about .ab-venue {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 22px;
  margin-top: 22px;
}
.page-about .ab-venue__text {
  min-width: 0;
}

.page-about .ab-details {
  border: 1px solid var(--paper-line);
  background: var(--ab-paper-tint);
  margin-top: 6px;
}
.page-about .ab-details summary {
  cursor: pointer;
  list-style: none;
  padding: 13px 14px;
  font-family: var(--font-label);
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--ink);
  display: flex;
  align-items: center;
  gap: 10px;
  transition: color var(--ease), background var(--ease);
}
.page-about .ab-details summary::-webkit-details-marker {
  display: none;
}
.page-about .ab-details summary::before {
  content: "";
  flex: 0 0 auto;
  width: 8px;
  height: 8px;
  background: var(--signal);
  transition: background var(--ease), transform var(--ease);
}
.page-about .ab-details summary:hover,
.page-about .ab-details summary:focus-visible {
  color: var(--amber-deep);
  outline: none;
}
.page-about .ab-details summary:focus-visible {
  box-shadow: inset 0 0 0 2px var(--amber);
}
.page-about .ab-details[open] summary::before {
  background: var(--amber);
  transform: rotate(45deg);
}
.page-about .ab-details__body {
  padding: 0 14px 15px;
  border-top: 1px dashed var(--paper-line);
}
.page-about .ab-details__body p {
  font-size: 14px;
  line-height: 1.85;
  color: var(--text-ink);
  margin: 12px 0 0;
  max-width: 34em;
}
.page-about .ab-details__body a {
  color: var(--amber-deep);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 五步流程 ---------- */
.page-about .ab-steps {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
}
.page-about .ab-steps li {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 14px;
  padding: 16px 0;
  border-top: 1px solid var(--paper-line);
  transition: background var(--ease);
}
.page-about .ab-steps li:last-child {
  border-bottom: 1px solid var(--paper-line);
}
.page-about .ab-steps li:hover {
  background: var(--ab-paper-tint);
}
.page-about .ab-step__n {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--amber-deep);
  padding-top: 4px;
}
.page-about .ab-step__body {
  min-width: 0;
}
.page-about .ab-step__h {
  font-family: var(--font-display);
  font-size: 17px;
  color: var(--ink);
  margin: 0 0 6px;
}
.page-about .ab-step__p {
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--text-ink);
  margin: 0;
  max-width: 36em;
}

/* ---------- 规模数字带 ---------- */
.page-about .ab-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--paper-line);
  border: 1px solid var(--paper-line);
  margin: 26px 0 0;
}
.page-about .ab-stat {
  background: var(--paper);
  padding: 18px 16px 16px;
  transition: background var(--ease);
}
.page-about .ab-stat:hover,
.page-about .ab-stat:focus-within {
  background: var(--ab-paper-tint);
}
.page-about .ab-stat__num {
  font-family: var(--font-mono);
  font-size: clamp(26px, 6vw, 38px);
  line-height: 1;
  color: var(--ink);
  margin: 0;
  letter-spacing: -0.01em;
}
.page-about .ab-stat__num span {
  font-size: 0.5em;
  color: var(--amber-deep);
}
.page-about .ab-stat__unit {
  font-family: var(--font-label);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--graphite);
  margin: 9px 0 0;
}
.page-about .ab-stat__note {
  font-size: 13px;
  line-height: 1.75;
  color: var(--text-ink);
  margin: 10px 0 0;
}

.page-about .ab-points {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
}
.page-about .ab-points li {
  position: relative;
  padding: 12px 0 12px 22px;
  border-bottom: 1px dashed var(--paper-line);
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--text-ink);
  max-width: 38em;
}
.page-about .ab-points li:first-child {
  border-top: 1px dashed var(--paper-line);
}
.page-about .ab-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 19px;
  width: 8px;
  height: 8px;
  background: var(--wave);
}

/* ---------- 收尾 ---------- */
.page-about .ab-closing {
  background: var(--ink);
  color: var(--paper);
  padding: 52px 0 60px;
  border-top: 1px solid var(--line-signal);
}
.page-about .ab-figure--band {
  border-color: var(--line-signal);
  background-color: var(--ink-2);
  background-image: radial-gradient(var(--line-dark) 1px, transparent 1px);
}
.page-about .ab-closing .ab-figure__cap {
  background: var(--ink-2);
  border-top-color: var(--line-dark);
  color: var(--graphite);
}
.page-about .ab-closing__cta {
  margin-top: 30px;
}
.page-about .ab-closing__title {
  font-family: var(--font-display);
  font-size: clamp(22px, 5vw, 32px);
  line-height: 1.3;
  letter-spacing: 0.02em;
  color: var(--paper);
  margin: 0 0 14px;
  max-width: 18em;
}
.page-about .ab-closing__lead {
  font-size: 15px;
  line-height: 1.9;
  color: rgba(239, 231, 217, 0.8);
  margin: 0 0 24px;
  max-width: 40em;
}
.page-about .ab-closing__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 平板 ---------- */
@media (min-width: 700px) {
  .page-about .ab-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .page-about .ab-team {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: start;
    gap: 30px;
  }
  .page-about .ab-venue {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: start;
    gap: 28px;
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 900px) {
  .page-about {
    --ab-rail-w: 236px;
  }
  .page-about .ab-hero {
    padding: 56px 0 70px;
  }
  .page-about .ab-hero__grid {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    gap: 68px;
  }
  .page-about .ab-body {
    padding: 62px 0 78px;
  }
  .page-about .ab-body__grid {
    grid-template-columns: var(--ab-rail-w) minmax(0, 1fr);
    gap: 62px;
    align-items: start;
  }
  .page-about .ab-rail {
    position: sticky;
    top: 26px;
  }
  .page-about .ab-closing {
    padding: 66px 0 76px;
  }
}

/* ---------- 降低动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-about .ab-rail__list a,
  .page-about .ab-rail__num,
  .page-about .ab-timeline__item::before,
  .page-about .ab-details summary::before,
  .page-about .ab-steps li,
  .page-about .ab-stat,
  .page-about .ab-p a {
    transition: none;
  }
  .page-about .ab-timeline__item:hover::before {
    transform: none;
  }
}
</｜｜DSML｜｜ parameter>
</invoke>