.page-about {
  --pa-aside-w: 300px;
  background: var(--silver);
  color: var(--ink);
}

.page-about a:focus-visible,
.page-about [tabindex]:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 3px;
  border-radius: 2px;
}

/* ── 首屏分屏 ───────────────────────────── */
.page-about .about-hero {
  position: relative;
  isolation: isolate;
  background:
    radial-gradient(120% 90% at 84% 6%, rgba(184, 255, 60, .10), transparent 58%),
    radial-gradient(95% 85% at 6% 94%, rgba(192, 138, 62, .22), transparent 62%),
    linear-gradient(158deg, #0F151D 0%, #1B2430 58%, #243141 100%);
  color: var(--silver);
  padding: clamp(26px, 4vw, 40px) 0 clamp(84px, 11vw, 146px);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 46px), 0 100%);
}

.page-about .about-crumb-wrap,
.page-about .about-hero-inner,
.page-about .about-shell {
  width: min(var(--wrap), 100% - var(--pad) * 2);
  margin-inline: auto;
}

.page-about .about-crumb-wrap {
  margin-bottom: clamp(30px, 4.4vw, 54px);
}

.page-about .about-hero .breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: .8125rem;
  letter-spacing: .06em;
  font-weight: 300;
}

.page-about .about-hero .breadcrumb-list a {
  color: var(--mist);
  text-decoration: none;
  transition: color var(--dur) var(--ease);
}

.page-about .about-hero .breadcrumb-list a:hover,
.page-about .about-hero .breadcrumb-list a:focus-visible {
  color: var(--lime);
}

.page-about .about-hero .breadcrumb-sep {
  color: rgba(169, 180, 192, .45);
}

.page-about .about-hero .breadcrumb-list a[aria-current="page"] {
  color: var(--horn-lite);
}

.page-about .about-hero-inner {
  display: grid;
  gap: clamp(36px, 5vw, 60px);
}

.page-about .about-hero-copy .exhibit-tag {
  display: inline-block;
  font-family: var(--mono);
  font-size: .75rem;
  font-weight: 500;
  letter-spacing: .18em;
  color: var(--horn-lite);
  border: 1px solid rgba(192, 138, 62, .55);
  border-radius: var(--radius);
  padding: 4px 10px;
  margin: 0 0 20px;
}

.page-about h1 {
  font-family: var(--sans);
  font-size: clamp(1.875rem, 5.2vw, 3.5rem);
  line-height: 1.16;
  font-weight: 900;
  letter-spacing: -.01em;
  color: #fff;
  margin: 0 0 clamp(16px, 2.4vw, 24px);
  max-width: 16em;
}

.page-about .about-lede {
  font-size: clamp(1rem, 1.55vw, 1.125rem);
  line-height: 1.85;
  color: rgba(233, 237, 242, .82);
  max-width: 34em;
  margin: 0 0 clamp(24px, 3vw, 34px);
}

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

.page-about .about-hero-visual {
  display: grid;
  place-items: center;
  min-height: 160px;
}

.page-about .hero-glyph {
  width: min(100%, 320px);
  height: auto;
  display: block;
  filter: drop-shadow(0 22px 44px rgba(15, 21, 29, .55));
}

@media (min-width: 1000px) {
  .page-about .about-hero-inner {
    grid-template-columns: minmax(0, 1.2fr) minmax(280px, .8fr);
    align-items: center;
  }
}

/* ── 主体骨架与右列数据锚点 ─────────────── */
.page-about .about-shell {
  display: grid;
  gap: clamp(32px, 4.5vw, 52px);
  padding-block: clamp(44px, 6.5vw, 84px) clamp(56px, 8vw, 104px);
}

.page-about .about-aside {
  background: linear-gradient(170deg, rgba(255, 255, 255, .88), rgba(233, 237, 242, .70));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: clamp(18px, 2.4vw, 24px);
  box-shadow: var(--shadow-1);
}

.page-about .aside-kicker {
  font-family: var(--mono);
  font-size: .75rem;
  letter-spacing: .16em;
  color: var(--horn-deep);
  margin: 0 0 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
}

.page-about .aside-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 13px;
}

.page-about .aside-list li {
  display: grid;
  grid-template-columns: minmax(0, auto) minmax(0, 1fr);
  align-items: baseline;
  gap: 14px;
}

.page-about .aside-val {
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
  font-size: 1.375rem;
  font-weight: 700;
  line-height: 1.1;
  color: var(--table);
  border-bottom: 2px solid var(--horn);
  padding-bottom: 3px;
  min-width: 3.4em;
}

.page-about .aside-key {
  font-size: .8125rem;
  line-height: 1.6;
  font-weight: 300;
  color: var(--rule-blue);
}

.page-about .aside-links {
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  display: grid;
  gap: 10px;
}

.page-about .aside-links a {
  justify-self: start;
  font-size: .875rem;
  font-weight: 500;
  color: var(--table);
  text-decoration: none;
  border-bottom: 1px solid rgba(192, 138, 62, .45);
  padding-bottom: 2px;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .aside-links a:hover,
.page-about .aside-links a:focus-visible {
  color: var(--lime-deep);
  border-color: var(--lime-deep);
}

@media (min-width: 1080px) {
  .page-about .about-shell {
    grid-template-columns: minmax(0, 1fr) var(--pa-aside-w);
    align-items: start;
    gap: clamp(40px, 5vw, 72px);
  }

  .page-about .about-flow {
    grid-column: 1;
    grid-row: 1;
    min-width: 0;
  }

  .page-about .about-aside {
    grid-column: 2;
    grid-row: 1;
    position: sticky;
    top: calc(var(--bar-h, 64px) + 20px);
  }
}

/* ── 章节通用 ───────────────────────────── */
.page-about .about-chapter {
  padding-block: clamp(34px, 5vw, 58px);
  border-top: 1px solid var(--line);
  scroll-margin-top: calc(var(--bar-h, 64px) + 24px);
}

.page-about .about-flow > .about-chapter:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-about .section-head {
  display: grid;
  gap: 8px;
  margin-bottom: clamp(20px, 3vw, 30px);
}

.page-about .chapter-no {
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(1.9rem, 4.6vw, 3rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: .02em;
  color: var(--horn);
}

.page-about .section-head h2 {
  font-size: clamp(1.375rem, 3vw, 2.05rem);
  line-height: 1.32;
  font-weight: 900;
  letter-spacing: -.005em;
  margin: 0;
}

.page-about .section-head .exhibit-tag {
  font-family: var(--mono);
  font-size: .75rem;
  font-weight: 500;
  letter-spacing: .14em;
  color: var(--rule-blue);
  margin: 0;
}

.page-about .section-head .exhibit-tag::before {
  content: "";
  display: inline-block;
  width: 18px;
  height: 2px;
  background: var(--horn);
  vertical-align: middle;
  margin-right: 8px;
}

.page-about .about-text {
  max-width: 68ch;
}

.page-about .about-text p {
  margin: 0 0 1.05em;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--ink);
}

.page-about .about-text h3 {
  font-size: clamp(1.0625rem, 1.9vw, 1.25rem);
  font-weight: 700;
  line-height: 1.5;
  color: var(--ink);
  margin: 1.7em 0 .55em;
  padding-left: 12px;
  border-left: 3px solid var(--horn);
}

.page-about .about-text h3:first-child {
  margin-top: 0;
}

.page-about .about-inline-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 6px;
  font-size: .9375rem;
  font-weight: 700;
  color: var(--horn-deep);
  text-decoration: none;
  border-bottom: 2px solid var(--horn);
  padding-bottom: 3px;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .about-inline-link::after {
  content: "→";
  font-family: var(--mono);
}

.page-about .about-inline-link:hover,
.page-about .about-inline-link:focus-visible {
  color: var(--lime-deep);
  border-color: var(--lime-deep);
}

/* ── 图片 ───────────────────────────────── */
.page-about .media-frame {
  margin: 0 0 clamp(20px, 3vw, 30px);
}

.page-about .media-frame img {
  display: block;
  width: 100%;
  height: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--card);
}

.page-about .media-frame[data-ratio="1x1"] img {
  aspect-ratio: 1 / 1;
}

.page-about .media-caption {
  margin-top: 10px;
  font-size: .8125rem;
  font-weight: 300;
  letter-spacing: .05em;
  line-height: 1.6;
  color: var(--rule-blue);
}

/* ── 玩法设计分栏 ───────────────────────── */
.page-about .about-split {
  display: grid;
  gap: clamp(20px, 3vw, 32px);
}

.page-about .about-split .media-frame {
  margin: 0;
}

@media (min-width: 760px) {
  .page-about .about-split {
    grid-template-columns: minmax(0, 1.4fr) minmax(200px, .6fr);
    align-items: start;
  }
}

/* ── 发展历程时间线 ─────────────────────── */
.page-about .about-timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
  display: grid;
  gap: clamp(14px, 2.2vw, 22px);
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 19px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: linear-gradient(180deg, var(--horn) 0%, rgba(192, 138, 62, .16) 100%);
}

.page-about .tl-node {
  position: relative;
  padding-left: 56px;
}

.page-about .tl-mark {
  position: absolute;
  left: 4px;
  top: 0;
  z-index: 1;
  width: 32px;
  height: 32px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--table);
  border: 1px solid rgba(192, 138, 62, .55);
  color: var(--horn-lite);
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease),
    box-shadow var(--dur) var(--ease);
}

.page-about .tl-mark svg {
  width: 15px;
  height: 15px;
  display: block;
}

.page-about .tl-body {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: clamp(14px, 2vw, 20px) clamp(16px, 2.2vw, 22px);
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease),
    box-shadow var(--dur) var(--ease);
}

.page-about .tl-no {
  display: block;
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
  font-size: .8125rem;
  letter-spacing: .12em;
  color: var(--horn-deep);
  margin-bottom: 6px;
}

.page-about .tl-body h3 {
  margin: 0 0 8px;
  font-size: clamp(1rem, 1.8vw, 1.125rem);
  font-weight: 700;
  line-height: 1.5;
}

.page-about .tl-body p {
  margin: 0;
  font-size: .9375rem;
  line-height: 1.8;
  color: var(--rule-blue);
}

.page-about .tl-node:hover .tl-body,
.page-about .tl-node:focus-within .tl-body,
.page-about .tl-node:focus .tl-body {
  border-color: rgba(184, 255, 60, .7);
  transform: translateY(-2px);
  box-shadow: var(--shadow-1);
}

.page-about .tl-node:hover .tl-mark,
.page-about .tl-node:focus-within .tl-mark,
.page-about .tl-node:focus .tl-mark {
  border-color: var(--lime);
  color: var(--lime);
  box-shadow: 0 0 0 4px rgba(184, 255, 60, .16);
}

/* ── 团队分工 ───────────────────────────── */
.page-about .crew-list {
  display: grid;
  gap: 14px;
}

.page-about .crew-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-left: 3px solid var(--horn);
  border-radius: var(--radius);
  padding: clamp(16px, 2.2vw, 22px);
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease),
    transform var(--dur) var(--ease);
}

.page-about .crew-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-1);
  border-left-color: var(--lime-deep);
}

.page-about .crew-no {
  display: block;
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
  font-size: .75rem;
  letter-spacing: .14em;
  color: var(--horn-deep);
}

.page-about .crew-card h3 {
  margin: 6px 0 8px;
  font-size: 1.0625rem;
  font-weight: 700;
}

.page-about .crew-card p {
  margin: 0;
  font-size: .9375rem;
  line-height: 1.8;
  color: var(--rule-blue);
}

@media (min-width: 800px) {
  .page-about .crew-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }
}

/* ── 运营数据牌面 ───────────────────────── */
.page-about .stat-board {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: rgba(169, 180, 192, .3);
  border: 1px solid rgba(169, 180, 192, .3);
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: clamp(22px, 3vw, 32px);
}

.page-about .stat-item {
  display: grid;
  align-content: start;
  gap: 10px;
  padding: clamp(16px, 2.4vw, 24px) clamp(14px, 2vw, 20px);
  background: linear-gradient(155deg, var(--table), var(--felt));
  transition: background var(--dur) var(--ease);
}

.page-about .stat-item:hover {
  background: linear-gradient(155deg, #131C26, #24323F);
}

.page-about .stat-num {
  justify-self: start;
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(1.1875rem, 2.5vw, 1.75rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: .01em;
  color: var(--horn-lite);
  border-bottom: 2px solid var(--horn);
  padding-bottom: 7px;
}

.page-about .stat-key {
  font-size: .8125rem;
  font-weight: 300;
  line-height: 1.65;
  color: var(--mist);
}

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

/* ── 合作与内容生态 ─────────────────────── */
.page-about .eco-grid {
  display: grid;
  gap: 14px;
  margin-bottom: clamp(22px, 3vw, 30px);
}

.page-about .eco-item {
  background: var(--card);
  border: 1px solid var(--line);
  border-top: 3px solid var(--rule-blue);
  border-radius: var(--radius);
  padding: clamp(16px, 2.2vw, 22px);
}

.page-about .eco-item:nth-child(2) {
  border-top-color: var(--horn);
}

.page-about .eco-item:nth-child(3) {
  border-top-color: var(--lime-deep);
}

.page-about .eco-item h3 {
  margin: 0 0 10px;
  font-size: 1.0625rem;
  font-weight: 700;
}

.page-about .eco-item p {
  margin: 0;
  font-size: .9375rem;
  line-height: 1.8;
  color: var(--rule-blue);
}

.page-about .eco-cta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: clamp(18px, 2.6vw, 26px);
  background: linear-gradient(120deg, rgba(192, 138, 62, .14), rgba(184, 255, 60, .12));
  border: 1px solid rgba(192, 138, 62, .35);
  border-radius: var(--radius);
}

.page-about .eco-cta p {
  margin: 0;
  max-width: 46ch;
  font-size: .9375rem;
  line-height: 1.75;
  color: var(--ink);
}

@media (min-width: 860px) {
  .page-about .eco-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
  }
}

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