.page-about {
  position: relative;
  color: var(--text);
  background:
    radial-gradient(760px 420px at 90% -8%, rgba(140, 92, 255, 0.18), transparent 64%),
    radial-gradient(620px 420px at -6% 26%, rgba(46, 230, 214, 0.11), transparent 68%),
    var(--ink);
}

/* ---------- 首屏 ---------- */
.page-about .ab-hero {
  position: relative;
  padding: 18px 0 54px;
  border-bottom: 1px solid var(--line-soft);
}

.page-about .ab-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(143, 233, 255, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(143, 233, 255, 0.055) 1px, transparent 1px);
  background-size: 54px 54px;
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.95) 0%, rgba(0, 0, 0, 0.3) 58%, transparent 92%);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.95) 0%, rgba(0, 0, 0, 0.3) 58%, transparent 92%);
}

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

.page-about .crumbs {
  margin: 0 0 22px;
}

.page-about .kicker {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-about .ab-hero__grid {
  display: grid;
  gap: 30px;
  align-items: start;
}

.page-about .ab-hero__copy h1 {
  margin: 0 0 20px;
  max-width: 18em;
  font-size: clamp(1.85rem, 5.2vw, 3.35rem);
  line-height: 1.16;
  font-weight: 700;
  letter-spacing: 0.005em;
  color: var(--text);
  text-wrap: balance;
}

.page-about .ab-hero__lead {
  margin: 0;
  max-width: 42em;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--body-soft);
}

.page-about .ab-hero__stats {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  border: 1px solid var(--line-soft);
  background: var(--line-soft);
}

.page-about .ab-stat {
  background: var(--hull);
  padding: 14px 14px 16px;
}

.page-about .ab-stat__n {
  display: block;
  font-family: var(--font-mono);
  font-size: 1.85rem;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--cyan);
}

.page-about .ab-stat__l {
  display: block;
  margin-top: 6px;
  font-size: 0.78rem;
  line-height: 1.6;
  color: var(--muted);
}

.page-about .ab-hero__acts {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-about .ab-hero__fig {
  position: relative;
  margin: 0;
}

.page-about .ab-hero__fig::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 46px;
  height: 46px;
  border-top: 2px solid var(--amber);
  border-right: 2px solid var(--amber);
  pointer-events: none;
}

.page-about .ab-hero__fig img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border: 1px solid var(--line);
  background: var(--panel);
}

.page-about .ab-hero__fig .figure__cap {
  margin-top: 12px;
  font-size: 0.76rem;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 章节骨架 ---------- */
.page-about .ab-sec {
  padding: 52px 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-about .ab-sec--last {
  border-bottom: 0;
  padding-bottom: 76px;
}

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

.page-about .ab-sec__no {
  display: block;
  margin-bottom: 12px;
  font-family: var(--font-mono);
  font-size: clamp(2.4rem, 6vw, 3.4rem);
  line-height: 1;
  letter-spacing: 0.04em;
  color: transparent;
  -webkit-text-stroke: 1px rgba(46, 230, 214, 0.55);
}

.page-about .ab-sec__title {
  margin: 0;
  font-size: clamp(1.32rem, 3.2vw, 1.95rem);
  line-height: 1.35;
  font-weight: 700;
  color: var(--text);
}

.page-about .ab-sec__note {
  margin: 14px 0 0;
  padding-left: 12px;
  border-left: 2px solid var(--amber);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  color: var(--muted);
}

.page-about .ab-sec__lead {
  margin: 0 0 26px;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--body-soft);
}

/* ---------- 时间线 ---------- */
.page-about .ab-tl {
  list-style: none;
  margin: 0;
  padding: 0 0 0 24px;
  border-left: 1px solid var(--line);
}

.page-about .ab-tl__item {
  position: relative;
  padding-bottom: 12px;
}

.page-about .ab-tl__item::before {
  content: "";
  position: absolute;
  left: -29px;
  top: 18px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--ink);
  border: 2px solid var(--cyan);
  box-shadow: 0 0 0 4px rgba(46, 230, 214, 0.1);
}

.page-about .ab-tl__s {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 14px;
  padding: 12px 16px;
  cursor: pointer;
  list-style: none;
  background: linear-gradient(100deg, rgba(22, 34, 51, 0.92), rgba(13, 20, 32, 0.55));
  border: 1px solid var(--line-soft);
  transition: border-color 0.18s var(--ease), transform 0.18s var(--ease);
}

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

.page-about .ab-tl__s:hover {
  border-color: rgba(46, 230, 214, 0.45);
  transform: translateX(3px);
}

.page-about .ab-tl__s:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 2px;
}

.page-about .ab-tl__year {
  display: inline-block;
  padding: 2px 9px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  color: #1A1408;
  background: var(--paper);
  transform: skewX(-6deg);
}

.page-about .ab-tl__ttl {
  font-size: 0.98rem;
  font-weight: 600;
  color: var(--text);
}

.page-about .ab-tl__body {
  margin: 2px 0 0 4px;
  padding: 12px 16px 6px;
  border-left: 2px solid rgba(46, 230, 214, 0.25);
}

.page-about .ab-tl__body p {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.85;
  color: var(--muted);
}

/* ---------- 角色卡 ---------- */
.page-about .ab-roles {
  display: grid;
  gap: 14px;
  margin-bottom: 24px;
}

.page-about .ab-role {
  position: relative;
  padding: 20px 16px 18px;
  background: var(--panel);
  border: 1px solid var(--line-soft);
  transition: transform 0.18s var(--ease), border-color 0.18s var(--ease), box-shadow 0.18s var(--ease);
}

.page-about .ab-role:hover,
.page-about .ab-role:focus-within,
.page-about .ab-role:focus {
  transform: translateY(-5px);
  border-color: rgba(46, 230, 214, 0.5);
  box-shadow: 0 14px 30px rgba(0, 0, 0, 0.45);
}

.page-about .ab-role:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 2px;
}

.page-about .ab-role__k {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  color: var(--violet);
}

.page-about .ab-role h3 {
  margin: 0 0 10px;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text);
}

.page-about .ab-role__d {
  margin: 0 0 12px;
  font-size: 0.86rem;
  line-height: 1.78;
  color: var(--muted);
}

.page-about .ab-role__o {
  margin: 0;
  padding-top: 10px;
  border-top: 1px dashed var(--line-soft);
  font-family: var(--font-mono);
  font-size: 0.73rem;
  letter-spacing: 0.04em;
  color: var(--ice);
}

.page-about .ab-teamfig {
  margin: 0;
  border: 1px solid var(--line-soft);
  padding: 8px;
  background: linear-gradient(180deg, rgba(140, 92, 255, 0.1), rgba(6, 8, 15, 0));
}

.page-about .ab-teamfig img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  background: var(--hull);
}

.page-about .ab-teamfig .figure__cap {
  margin-top: 10px;
  font-size: 0.76rem;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 更新节奏 ---------- */
.page-about .ab-cadence {
  display: grid;
  gap: 1px;
  border: 1px solid var(--line-soft);
  background: var(--line-soft);
}

.page-about .ab-cd {
  padding: 22px 18px 24px;
  background: var(--hull);
  transition: background 0.18s var(--ease);
}

.page-about .ab-cd:hover {
  background: var(--panel);
}

.page-about .ab-cd__k {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  color: var(--amber);
}

.page-about .ab-cd__n {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 2.15rem;
  line-height: 1;
  color: var(--text);
}

.page-about .ab-cd__n small {
  margin-left: 6px;
  font-size: 0.85rem;
  letter-spacing: 0.02em;
  color: var(--muted);
}

.page-about .ab-cd h3 {
  margin: 14px 0 8px;
  font-size: 0.98rem;
  font-weight: 600;
  color: var(--ice);
}

.page-about .ab-cd__d {
  margin: 0;
  font-size: 0.86rem;
  line-height: 1.78;
  color: var(--muted);
}

/* ---------- 属地 ---------- */
.page-about .ab-region {
  display: grid;
  gap: 24px;
}

.page-about .ab-region__txt p {
  margin: 0 0 16px;
  font-size: 0.96rem;
  line-height: 1.85;
  color: var(--body-soft);
}

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

.page-about .ab-region__fig {
  margin: 0;
  padding: 8px;
  border: 1px solid var(--line-soft);
  background: linear-gradient(180deg, rgba(140, 92, 255, 0.1), rgba(6, 8, 15, 0));
}

.page-about .ab-region__fig img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  background: var(--hull);
}

.page-about .ab-region__fig .figure__cap {
  margin-top: 10px;
  font-size: 0.76rem;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 入口链接 ---------- */
.page-about .ab-links {
  display: grid;
  gap: 12px;
}

.page-about .ab-link {
  display: block;
  padding: 18px 18px 16px;
  text-decoration: none;
  background: linear-gradient(120deg, rgba(22, 34, 51, 0.95), rgba(13, 20, 32, 0.7));
  border: 1px solid var(--line-soft);
  transition: border-color 0.18s var(--ease), transform 0.18s var(--ease);
}

.page-about .ab-link:hover,
.page-about .ab-link:focus-visible {
  border-color: var(--cyan);
  transform: translateY(-3px);
}

.page-about .ab-link:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 2px;
}

.page-about .ab-link__k {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  color: var(--cyan);
}

.page-about .ab-link__t {
  margin: 0 0 8px;
  font-size: 1.02rem;
  font-weight: 600;
  color: var(--text);
}

.page-about .ab-link__d {
  margin: 0;
  font-size: 0.85rem;
  line-height: 1.72;
  color: var(--muted);
}

.page-about .ab-closing {
  margin: 26px 0 0;
  padding: 18px 20px;
  border-left: 2px solid var(--amber);
  background: rgba(255, 176, 32, 0.06);
  font-size: 0.92rem;
  line-height: 1.85;
  color: var(--body-soft);
}

/* ---------- 断点 ---------- */
@media (min-width: 640px) {
  .page-about .ab-hero__stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 720px) {
  .page-about .ab-roles {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 760px) {
  .page-about .ab-cadence {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

@media (min-width: 860px) {
  .page-about .ab-region {
    grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
    gap: 40px;
    align-items: center;
  }
}

@media (min-width: 900px) {
  .page-about .ab-hero {
    padding: 24px 0 68px;
  }

  .page-about .ab-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 52px;
  }

  .page-about .ab-hero__fig {
    margin-top: 40px;
  }
}

@media (min-width: 960px) {
  .page-about .ab-sec {
    padding: 84px 0;
  }

  .page-about .ab-sec__grid {
    grid-template-columns: minmax(0, 4fr) minmax(0, 7fr);
    gap: 60px;
    align-items: start;
  }

  .page-about .ab-sec__head {
    position: sticky;
    top: 116px;
    padding-right: 24px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about *,
  .page-about *::before,
  .page-about *::after {
    transition: none !important;
    animation: none !important;
  }
}
<<<END>>>