.page-about {
  --ab-hair: rgba(200, 162, 72, .28);
  --ab-line: rgba(200, 162, 72, .22);
  --ab-soft: rgba(242, 237, 227, .06);
  --ab-rail: 258px;
  position: relative;
  isolation: isolate;
  padding-bottom: clamp(56px, 9vw, 112px);
  background:
    radial-gradient(120% 52% at 86% -8%, rgba(20, 56, 46, .95), rgba(10, 33, 27, 0) 60%),
    linear-gradient(180deg, #0C2620 0%, #0A211B 100%);
  color: var(--pk-bone);
  font-family: var(--pk-font-body);
  line-height: 1.85;
  -webkit-text-size-adjust: 100%;
}

.page-about .ab-wrap {
  width: 100%;
  max-width: var(--pk-w-wide);
  margin-inline: auto;
  padding-inline: var(--pk-pad);
}

.page-about .ab-wrap--mid { max-width: var(--pk-w-mid); }
.page-about .ab-wrap--narrow { max-width: var(--pk-w-narrow); }

.page-about a:focus-visible,
.page-about summary:focus-visible,
.page-about label:focus-visible {
  outline: 2px solid var(--pk-gold-bright);
  outline-offset: 3px;
}

/* 面包屑 */
.page-about .ab-crumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding-top: 22px;
  font-family: var(--pk-font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--pk-slate);
}

.page-about .ab-crumb a {
  color: var(--pk-bone);
  text-decoration: none;
  border-bottom: 1px solid var(--ab-hair);
}

.page-about .ab-crumb a:hover { color: var(--pk-gold-bright); }

/* 首屏 */
.page-about .ab-hero { padding-top: clamp(26px, 5vw, 52px); }

.page-about .pk-kicker {
  margin: 0 0 14px;
  font-family: var(--pk-font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--pk-gold);
}

.page-about .ab-hero__title {
  margin: 0;
  font-family: var(--pk-font-display);
  font-weight: 900;
  font-size: clamp(34px, 7.4vw, 74px);
  line-height: 1.06;
  letter-spacing: -.02em;
  color: var(--pk-bone);
  max-width: 15em;
}

.page-about .ab-hero__title-em {
  display: block;
  margin-top: .18em;
  font-size: .48em;
  line-height: 1.25;
  letter-spacing: 0;
  color: var(--pk-gold-bright);
}

.page-about .ab-hero__grid {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
  margin-top: clamp(24px, 4vw, 40px);
}

.page-about .ab-lede {
  margin: 0;
  max-width: 34em;
  font-size: clamp(17px, 2vw, 20px);
  line-height: 1.9;
  color: rgba(242, 237, 227, .92);
}

.page-about .ab-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 26px;
}

.page-about .ab-facts {
  display: grid;
  gap: 14px;
  padding: 20px;
  background: var(--pk-glass);
  border: 1px solid var(--pk-glass-line);
  border-radius: var(--pk-radius);
  backdrop-filter: blur(6px);
}

.page-about .ab-fact {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
}

.page-about .ab-fact__no {
  padding-top: 4px;
  font-family: var(--pk-font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--pk-gold);
}

.page-about .ab-fact p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: rgba(242, 237, 227, .88);
}

.page-about .ab-fact--accent {
  padding-top: 12px;
  border-top: 1px solid var(--ab-hair);
}

.page-about .ab-fact--accent .ab-fact__no { color: var(--pk-red); }

/* 横幅图 */
.page-about .ab-banner {
  width: 100%;
  max-width: var(--pk-w-wide);
  margin: clamp(32px, 6vw, 62px) auto 0;
  padding-inline: var(--pk-pad);
}

.page-about .ab-banner .pk-media__frame,
.page-about .ab-timeline__fig .pk-media__frame,
.page-about .ab-route__fig .pk-media__frame {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--ab-hair);
  border-radius: var(--pk-radius);
}

.page-about .ab-banner .pk-media__frame::after,
.page-about .ab-route__fig .pk-media__frame::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(90% 70% at 50% 30%, rgba(10, 33, 27, 0) 42%, rgba(10, 33, 27, .72) 100%);
  pointer-events: none;
}

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

.page-about .pk-media__caption {
  margin-top: 10px;
  font-family: var(--pk-font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--pk-slate);
}

/* 章节骨架 */
.page-about .ab-section { padding-top: clamp(54px, 9vw, 110px); }

.page-about .ab-head { max-width: 46em; }

.page-about .ab-h2 {
  margin: 0 0 16px;
  font-family: var(--pk-font-display);
  font-weight: 800;
  font-size: clamp(24px, 4.2vw, 40px);
  line-height: 1.24;
  letter-spacing: -.01em;
  color: var(--pk-bone);
}

.page-about .pk-text {
  margin: 0 0 18px;
  max-width: 34em;
  font-size: 17px;
  line-height: 1.85;
  color: rgba(242, 237, 227, .9);
}

.page-about .ab-head__lede { margin-bottom: 0; }

/* 主张解读 */
.page-about .ab-claim { margin-top: clamp(22px, 3vw, 32px); }

.page-about .ab-dropcap::first-letter {
  float: left;
  margin: .06em .18em 0 0;
  font-family: var(--pk-font-display);
  font-weight: 900;
  font-size: 62px;
  line-height: .84;
  color: var(--pk-gold);
}

.page-about .ab-details {
  margin-top: 26px;
  border-top: 1px solid var(--ab-hair);
  border-bottom: 1px solid var(--ab-hair);
  background: var(--ab-soft);
}

.page-about .ab-details .pk-step__summary {
  display: block;
  padding: 15px 16px;
  cursor: pointer;
  list-style: none;
  font-family: var(--pk-font-mono);
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--pk-gold-bright);
}

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

.page-about .ab-details .pk-step__summary::before {
  content: "+ ";
  color: var(--pk-red);
  font-weight: 700;
}

.page-about .ab-details[open] .pk-step__summary::before { content: "− "; }

.page-about .ab-details__body { padding: 0 16px 18px; }

.page-about .ab-notes {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}

.page-about .ab-notes li {
  position: relative;
  padding-left: 20px;
  font-size: 16px;
  line-height: 1.8;
  color: rgba(242, 237, 227, .86);
}

.page-about .ab-notes li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .78em;
  width: 9px;
  height: 1px;
  background: var(--pk-gold);
}

/* 演进脉络 */
.page-about .ab-timeline {
  display: grid;
  gap: clamp(26px, 4vw, 48px);
  margin-top: clamp(26px, 4vw, 42px);
}

.page-about .ab-timeline__rail {
  display: grid;
  gap: 22px;
  align-content: start;
  min-width: 0;
}

.page-about .ab-spy {
  display: grid;
  gap: 2px;
  border-left: 1px solid var(--ab-line);
}

.page-about .ab-spy__link {
  position: relative;
  display: grid;
  grid-template-columns: 32px minmax(0, 1fr);
  gap: 10px;
  align-items: center;
  padding: 12px 14px 12px 22px;
  text-decoration: none;
  font-size: 14px;
  line-height: 1.5;
  color: rgba(242, 237, 227, .7);
  transition: color .25s var(--pk-ease), background-color .25s var(--pk-ease);
}

.page-about .ab-spy__link::before {
  content: "";
  position: absolute;
  left: -4px;
  top: 50%;
  margin-top: -4px;
  width: 8px;
  height: 8px;
  border: 1px solid var(--pk-gold);
  border-radius: 50%;
  background: #0A211B;
  transition: background-color .25s var(--pk-ease), box-shadow .25s var(--pk-ease);
}

.page-about .ab-spy__link .pk-mono {
  font-family: var(--pk-font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--pk-slate);
}

.page-about .ab-spy__link:hover {
  color: var(--pk-bone);
  background: rgba(242, 237, 227, .05);
}

.page-about .ab-spy__link.is-active,
.page-about .ab-spy__link[aria-current] {
  color: var(--pk-bone);
  background: rgba(200, 162, 72, .1);
}

.page-about .ab-spy__link.is-active::before,
.page-about .ab-spy__link[aria-current]::before {
  background: var(--pk-gold-bright);
  box-shadow: 0 0 0 4px rgba(200, 162, 72, .18);
}

.page-about .ab-spy__link.is-active .pk-mono,
.page-about .ab-spy__link[aria-current] .pk-mono { color: var(--pk-gold-bright); }

.page-about .ab-track {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 18px;
  min-width: 0;
}

.page-about .ab-stage {
  position: relative;
  padding: 22px 20px 20px 24px;
  background: linear-gradient(180deg, rgba(242, 237, 227, .065), rgba(242, 237, 227, .02));
  border: 1px solid rgba(242, 237, 227, .09);
  border-radius: var(--pk-radius);
}

.page-about .ab-stage::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--pk-gold-grad);
}

.page-about .ab-stage__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 12px;
}

.page-about .ab-stage__no {
  font-family: var(--pk-font-mono);
  font-size: 13px;
  letter-spacing: .14em;
  color: var(--pk-gold);
}

.page-about .ab-stage__title {
  margin: 0;
  font-family: var(--pk-font-display);
  font-weight: 700;
  font-size: clamp(18px, 2.3vw, 22px);
  line-height: 1.4;
  color: var(--pk-bone);
}

.page-about .ab-stage p {
  margin: 0;
  max-width: 36em;
  font-size: 16px;
  line-height: 1.85;
  color: rgba(242, 237, 227, .86);
}

.page-about .ab-stage__meta {
  display: grid;
  gap: 14px;
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px dashed rgba(242, 237, 227, .14);
}

.page-about .ab-stage__meta dt {
  margin-bottom: 4px;
  font-family: var(--pk-font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--pk-slate);
}

.page-about .ab-stage__meta dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: rgba(242, 237, 227, .8);
}

/* 入口选择器 */
.page-about .ab-route__layout {
  display: grid;
  gap: clamp(24px, 4vw, 40px);
  margin-top: clamp(24px, 4vw, 40px);
}

.page-about .ab-picker {
  min-width: 0;
  padding: clamp(18px, 3vw, 26px);
  background: var(--pk-glass);
  border: 1px solid var(--pk-glass-line);
  border-radius: var(--pk-radius);
  backdrop-filter: blur(8px);
}

.page-about .ab-switch {
  display: grid;
  gap: 10px;
  margin-bottom: 20px;
}

.page-about .ab-switch .pk-switch__input {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  opacity: 0;
  clip-path: inset(50%);
}

.page-about .ab-switch .pk-switch__label {
  display: block;
  padding: 13px 16px;
  border: 1px solid rgba(242, 237, 227, .18);
  border-radius: var(--pk-radius);
  background: rgba(10, 33, 27, .45);
  font-family: var(--pk-font-display);
  font-weight: 600;
  font-size: 15px;
  line-height: 1.5;
  color: rgba(242, 237, 227, .82);
  cursor: pointer;
  transition: border-color .25s var(--pk-ease), color .25s var(--pk-ease), background-color .25s var(--pk-ease);
}

.page-about .ab-switch .pk-switch__label:hover {
  border-color: var(--pk-gold);
  color: var(--pk-bone);
}

.page-about .ab-switch .pk-switch__input:checked + .pk-switch__label {
  border-color: var(--pk-gold);
  color: var(--pk-bone);
  background: linear-gradient(135deg, rgba(200, 162, 72, .24), rgba(138, 107, 31, .12));
  box-shadow: inset 0 0 0 1px rgba(200, 162, 72, .32);
}

.page-about .ab-switch .pk-switch__input:focus-visible + .pk-switch__label {
  outline: 2px solid var(--pk-gold-bright);
  outline-offset: 2px;
}

.page-about .ab-picker__body {
  display: grid;
  gap: 16px;
}

.page-about .ab-path {
  padding: 18px;
  border: 1px solid rgba(242, 237, 227, .1);
  border-radius: var(--pk-radius);
  background: rgba(10, 33, 27, .4);
}

.page-about .ab-path__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}

.page-about .ab-path__tag {
  font-family: var(--pk-font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--pk-gold-bright);
  border: 1px solid var(--ab-hair);
  border-radius: 999px;
  padding: 3px 10px;
}

.page-about .ab-path__flag {
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--pk-slate);
}

.page-about .ab-path__flag--red { color: var(--pk-red); }

.page-about .ab-path__title {
  margin: 0 0 14px;
  font-family: var(--pk-font-display);
  font-weight: 700;
  font-size: clamp(17px, 2.2vw, 20px);
  line-height: 1.4;
  color: var(--pk-bone);
}

.page-about .ab-path__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 11px;
}

.page-about .ab-path__list li {
  display: grid;
  gap: 3px;
  font-size: 15px;
  line-height: 1.75;
  color: rgba(242, 237, 227, .86);
}

.page-about .ab-path__key {
  font-family: var(--pk-font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--pk-gold);
}

.page-about .ab-path__cta { margin-top: 18px; }

.page-about .ab-route__aside { display: grid; gap: 16px; align-content: start; }

.page-about .ab-route__fig { margin: 0; }

.page-about .ab-route__note {
  margin: 0;
  padding-left: 16px;
  border-left: 2px solid var(--pk-red);
  font-size: 15px;
  line-height: 1.8;
  color: rgba(242, 237, 227, .82);
}

/* 团队与节奏 */
.page-about .ab-roles {
  margin: clamp(24px, 4vw, 38px) 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 16px;
}

.page-about .ab-role {
  padding: 20px 18px;
  background: rgba(242, 237, 227, .05);
  border-top: 2px solid var(--pk-gold);
  border-radius: 0 0 var(--pk-radius) var(--pk-radius);
}

.page-about .ab-role__title {
  margin: 0 0 8px;
  font-family: var(--pk-font-display);
  font-weight: 700;
  font-size: 18px;
  letter-spacing: .01em;
  color: var(--pk-bone);
}

.page-about .ab-role p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(242, 237, 227, .82);
}

.page-about .ab-stats {
  display: grid;
  gap: 18px;
  margin: clamp(26px, 4vw, 42px) 0 0;
  padding: clamp(20px, 3vw, 28px);
  background: var(--pk-sand);
  border-radius: var(--pk-radius);
  color: var(--pk-char);
}

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

.page-about .ab-stat__num {
  display: block;
  font-family: var(--pk-font-mono);
  font-weight: 700;
  font-size: clamp(24px, 3.4vw, 34px);
  letter-spacing: .02em;
  line-height: 1.2;
  color: #0C2620;
}

.page-about .ab-stat__label {
  display: block;
  margin-top: 6px;
  font-size: 14px;
  line-height: 1.6;
  color: #3C4A44;
}

.page-about .ab-rhythm {
  margin: clamp(24px, 4vw, 36px) 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}

.page-about .ab-rhythm li {
  position: relative;
  padding-left: 26px;
  font-size: 16px;
  line-height: 1.85;
  color: rgba(242, 237, 227, .86);
}

.page-about .ab-rhythm li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .78em;
  width: 10px;
  height: 1px;
  background: var(--pk-gold);
}

/* 协作与联系 */
.page-about .ab-contact-grid {
  display: grid;
  gap: clamp(24px, 4vw, 40px);
  margin-top: clamp(24px, 4vw, 40px);
}

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

.page-about .ab-partner-list {
  margin: 4px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 14px;
}

.page-about .ab-partner {
  position: relative;
  padding-left: 22px;
  font-size: 16px;
  line-height: 1.8;
  color: rgba(242, 237, 227, .86);
}

.page-about .ab-partner::before {
  content: "";
  position: absolute;
  left: 0;
  top: .7em;
  width: 8px;
  height: 8px;
  border: 1px solid var(--pk-gold);
  border-radius: 50%;
}

.page-about .ab-contact {
  padding: clamp(20px, 3vw, 28px);
  background: linear-gradient(160deg, rgba(20, 56, 46, .96), rgba(10, 33, 27, .96));
  border: 1px solid var(--ab-hair);
  border-radius: var(--pk-radius);
}

.page-about .ab-contact__title {
  margin: 0 0 10px;
  font-family: var(--pk-font-display);
  font-weight: 700;
  font-size: 20px;
  line-height: 1.4;
  color: var(--pk-bone);
}

.page-about .ab-contact__intro {
  margin: 0 0 8px;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(242, 237, 227, .84);
}

.page-about .ab-contact .pk-contact__item {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px dashed rgba(242, 237, 227, .14);
}

.page-about .pk-contact__key {
  padding-top: 3px;
  font-family: var(--pk-font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--pk-gold);
}

.page-about .pk-contact__val {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: rgba(242, 237, 227, .92);
  overflow-wrap: anywhere;
}

.page-about .pk-contact__val a {
  color: var(--pk-bone);
  text-decoration: none;
  border-bottom: 1px solid var(--ab-hair);
}

.page-about .pk-contact__val a:hover { color: var(--pk-gold-bright); }

.page-about .ab-contact__cta { margin-top: 20px; }

.page-about .ab-divider {
  height: 1px;
  border: none;
  margin: clamp(38px, 6vw, 68px) 0 clamp(26px, 4vw, 36px);
  background: linear-gradient(90deg, rgba(200, 162, 72, 0), var(--pk-gold), rgba(200, 162, 72, 0));
}

.page-about .ab-next {
  display: grid;
  gap: 18px;
}

.page-about .ab-next__text {
  margin: 0;
  max-width: 34em;
  font-size: 17px;
  line-height: 1.8;
  color: rgba(242, 237, 227, .88);
}

.page-about .ab-next__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* 显现动效：默认可见，脚本就绪后追加进入动画 */
@keyframes abRise {
  from { opacity: .35; transform: translateY(14px); }
  to { opacity: 1; transform: none; }
}

.page-about [data-reveal].is-in {
  animation: abRise .7s var(--pk-ease) both;
}

/* 桌面栅格 */
@media (min-width: 640px) {
  .page-about .ab-switch { grid-template-columns: 1fr 1fr; }
  .page-about .ab-picker__body { grid-template-columns: 1fr; }
  .page-about .ab-stage__meta { grid-template-columns: 1fr 1fr; gap: 20px; }
  .page-about .ab-roles { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .page-about .ab-stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .page-about .ab-next { grid-template-columns: minmax(0, 1fr) auto; align-items: center; }
}

@media (min-width: 900px) {
  .page-about .ab-hero__grid {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, .85fr);
    align-items: end;
  }

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

  .page-about .ab-roles { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .page-about .ab-stats { grid-template-columns: repeat(4, minmax(0, 1fr)); }

  .page-about .ab-contact-grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
  }

  .page-about .ab-route__layout {
    grid-template-columns: minmax(0, 1fr) 320px;
    align-items: start;
  }

  .page-about .ab-timeline {
    grid-template-columns: var(--ab-rail) minmax(0, 1fr);
    align-items: start;
  }
}

@media (min-width: 1040px) {
  .page-about .ab-picker__body { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (prefers-reduced-motion: reduce) {
  .page-about *,
  .page-about *::before,
  .page-about *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }

  .page-about [data-reveal].is-in { animation: none; }
}
</｜｜DSML｜｜ parameter>
</｜｜DSML｜｜ invoke>
</｜｜DSML｜｜ calls>