.page-about {
  --pa-gap: clamp(32px, 5vw, 68px);
  --pa-soft: rgba(245, 239, 228, .8);
  background:
    radial-gradient(900px 520px at 82% -8%, rgba(217, 154, 78, .12), transparent 62%),
    radial-gradient(700px 500px at 6% 32%, rgba(122, 31, 43, .18), transparent 66%),
    var(--ink);
  color: var(--cream);
  font-family: var(--sans);
  overflow-x: clip;
  padding-bottom: 90px;
}

.page-about .mono { font-family: var(--mono); }

/* ---------- 面包屑 ---------- */
.page-about .about-crumb { padding-top: 22px; }
.page-about .breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 13px;
  color: var(--mist);
}
.page-about .breadcrumb-item + .breadcrumb-item::before {
  content: "/";
  margin-right: 6px;
  color: rgba(138, 151, 166, .55);
}
.page-about .breadcrumb-link {
  color: var(--mist);
  text-decoration: none;
  transition: color var(--t) var(--ease);
}
.page-about .breadcrumb-link:hover { color: var(--gold); }
.page-about .breadcrumb-item [aria-current="page"] { color: var(--gold); }

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: 26px 0 var(--pa-gap);
}
.page-about .hero-grid {
  display: grid;
  gap: 34px;
  align-items: center;
}
.page-about .hero-eyebrow {
  margin: 0 0 18px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--gold);
}
.page-about .hero-title {
  margin: 0 0 22px;
  font-family: var(--serif);
  font-weight: 700;
  font-size: clamp(36px, 8vw, 72px);
  line-height: 1.1;
  letter-spacing: .01em;
  color: var(--cream);
}
.page-about .hero-title em {
  font-style: normal;
  color: var(--gold);
  display: inline-block;
}
.page-about .hero-lede {
  max-width: 56ch;
  margin: 0 0 30px;
  font-size: 17px;
  line-height: 1.9;
  color: var(--pa-soft);
}
.page-about .hero-meta {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.page-about .meta-item {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 10px 18px;
  background: var(--ink);
}
.page-about .meta-val {
  font-family: var(--mono);
  font-size: 22px;
  letter-spacing: .04em;
  color: var(--gold);
}
.page-about .meta-key {
  font-size: 12.5px;
  letter-spacing: .04em;
  color: var(--mist);
}

/* ---------- 图片容器 ---------- */
.page-about .about-figure {
  position: relative;
  margin: 0;
  border-radius: var(--r-lg);
  overflow: hidden;
  background: var(--ink-2);
  border: 1px solid var(--line);
}
.page-about .about-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}
.page-about .fig-hero img { aspect-ratio: 14 / 9; }
.page-about .fig-team img { aspect-ratio: 4 / 3; }
.page-about .fig-archive img { aspect-ratio: 3 / 4; }
.page-about .about-figure::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(11, 22, 34, .05) 0%, rgba(11, 22, 34, .55) 100%);
}
.page-about .fig-hero { box-shadow: 0 24px 60px rgba(4, 10, 18, .55); }
.page-about .frame-caption {
  position: relative;
  z-index: 1;
  display: block;
  margin: 0;
  padding: 10px 14px 12px;
  font-size: 12px;
  line-height: 1.6;
  color: var(--mist);
  border-top: 1px solid var(--line);
  background: var(--ink-2);
}

/* ---------- 主体栅格 ---------- */
.page-about .about-body {
  border-top: 1px solid var(--line);
  padding-top: var(--pa-gap);
}
.page-about .about-body-grid {
  display: grid;
  gap: 46px;
}
.page-about .about-sec + .about-sec { margin-top: clamp(56px, 8vw, 104px); }
.page-about .about-sec { scroll-margin-top: 92px; }

.page-about .section-head {
  display: grid;
  gap: 12px;
  margin-bottom: 30px;
}
.page-about .section-index {
  margin: 0;
  font-size: 12px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--gold);
}
.page-about .section-title {
  margin: 0;
  font-family: var(--serif);
  font-weight: 700;
  font-size: clamp(26px, 4.6vw, 42px);
  line-height: 1.24;
  color: var(--cream);
}
.page-about .section-note {
  margin: 0;
  max-width: 62ch;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--pa-soft);
}

/* ---------- 01 起点 ---------- */
.page-about .about-split { display: grid; gap: 30px; }
.page-about .split-copy p {
  margin: 0 0 18px;
  font-size: 16.5px;
  line-height: 1.95;
  color: var(--pa-soft);
}
.page-about .split-copy p:last-child { margin-bottom: 0; }
.page-about .svc-stack { display: grid; gap: 14px; }
.page-about .svc {
  padding: 18px 20px 20px;
  border-left: 2px solid var(--line-gold);
  border-radius: 0 var(--r-md) var(--r-md) 0;
  background: linear-gradient(90deg, rgba(18, 34, 50, .95), rgba(11, 22, 34, .35));
}
.page-about .svc-title {
  margin: 0 0 8px;
  font-family: var(--serif);
  font-size: 18px;
  line-height: 1.4;
  color: var(--gold);
}
.page-about .svc-text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--pa-soft);
}

/* ---------- 02 团队 ---------- */
.page-about .team-grid { display: grid; gap: 28px; }
.page-about .team-copy { display: grid; gap: 22px; }
.page-about .team-block {
  padding-bottom: 20px;
  border-bottom: 1px solid var(--line);
}
.page-about .team-block:last-child { border-bottom: 0; padding-bottom: 0; }
.page-about .team-num {
  margin: 0 0 4px;
  font-size: 34px;
  line-height: 1;
  color: var(--gold);
  letter-spacing: .02em;
}
.page-about .team-title {
  margin: 0 0 8px;
  font-family: var(--serif);
  font-size: 19px;
  color: var(--cream);
}
.page-about .team-copy p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.9;
  color: var(--pa-soft);
}
.page-about .team-block--quiet .team-num { color: var(--mist); }

/* ---------- 03 版本档案 ---------- */
.page-about .version-wrap { display: grid; gap: 26px; }
.page-about .version-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
  position: relative;
}
.page-about .version-list::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 10px;
  bottom: 10px;
  width: 1px;
  background: linear-gradient(180deg, rgba(242, 200, 121, .45), rgba(242, 200, 121, .05));
}
.page-about .version {
  position: relative;
  margin-left: 20px;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: var(--ink-2);
  overflow: hidden;
  transition: border-color var(--t) var(--ease), background var(--t) var(--ease);
}
.page-about .version::before {
  content: "";
  position: absolute;
  left: -19px;
  top: 24px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--ink);
  border: 1px solid rgba(242, 200, 121, .6);
}
.page-about .version[open] {
  border-color: var(--line-gold);
  background: linear-gradient(180deg, rgba(122, 31, 43, .18), rgba(18, 34, 50, .96));
}
.page-about .version[open]::before { background: var(--gold); border-color: var(--gold); }
.page-about .version summary {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
}
.page-about .version summary::-webkit-details-marker { display: none; }
.page-about .version summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--mono);
  font-size: 18px;
  line-height: 1;
  color: var(--gold);
  transition: transform var(--t) var(--ease);
}
.page-about .version[open] summary::after { content: "–"; }
.page-about .v-label {
  flex: none;
  font-size: 11.5px;
  letter-spacing: .1em;
  padding: 4px 10px;
  border-radius: var(--r-pill);
  border: 1px solid var(--line-gold);
  color: var(--gold);
  background: rgba(11, 22, 34, .6);
}
.page-about .v-title {
  font-family: var(--serif);
  font-size: 16.5px;
  line-height: 1.4;
  color: var(--cream);
}
.page-about .v-hint {
  flex: none;
  font-size: 12px;
  color: var(--mist);
}
.page-about .v-panel { padding: 0 18px 18px; }
.page-about .v-grid {
  margin: 0;
  padding-top: 14px;
  border-top: 1px dashed var(--line);
  display: grid;
  gap: 10px;
}
.page-about .v-row {
  display: grid;
  grid-template-columns: 84px minmax(0, 1fr);
  gap: 12px;
  align-items: baseline;
}
.page-about .v-key {
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: .08em;
  color: var(--mist);
}
.page-about .v-val {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: rgba(245, 239, 228, .88);
}
.page-about .version--current .v-label {
  background: var(--wine);
  border-color: var(--wine);
  color: var(--cream);
}

/* ---------- 04 活动网络 ---------- */
.page-about .net-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border-radius: var(--r-lg);
  overflow: hidden;
  margin-bottom: 26px;
}
.page-about .net-stat {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 22px 18px 24px;
  background: var(--green);
}
.page-about .net-num {
  font-size: clamp(26px, 5vw, 40px);
  line-height: 1;
  letter-spacing: .02em;
  color: var(--gold);
}
.page-about .net-key {
  font-size: 13px;
  letter-spacing: .03em;
  color: rgba(245, 239, 228, .72);
}
.page-about .net-copy p {
  margin: 0 0 16px;
  font-size: 16px;
  line-height: 1.95;
  color: var(--pa-soft);
}
.page-about .net-copy p:last-child { margin-bottom: 0; }

/* ---------- 行内链接 ---------- */
.page-about .inline-link {
  color: var(--gold);
  text-decoration: none;
  border-bottom: 1px solid rgba(242, 200, 121, .4);
  padding-bottom: 1px;
  transition: color var(--t) var(--ease), border-color var(--t) var(--ease);
}
.page-about .inline-link:hover {
  color: var(--cream);
  border-color: var(--cream);
}

/* ---------- 05 理由 ---------- */
.page-about .why-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 16px;
}
.page-about .why-item {
  position: relative;
  padding: 22px 22px 22px 62px;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: linear-gradient(135deg, rgba(122, 31, 43, .22), rgba(18, 34, 50, .9) 58%);
}
.page-about .why-no {
  position: absolute;
  left: 20px;
  top: 22px;
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--gold);
}
.page-about .why-title {
  margin: 0 0 10px;
  font-family: var(--serif);
  font-size: 19px;
  line-height: 1.4;
  color: var(--cream);
}
.page-about .why-item p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--pa-soft);
}

/* ---------- 行动区 ---------- */
.page-about .about-cta {
  margin-top: clamp(56px, 8vw, 100px);
  display: grid;
  gap: 24px;
  padding: 30px 24px 32px;
  border-radius: var(--r-xl);
  border: 1px solid var(--line-gold);
  background:
    radial-gradient(520px 240px at 88% 0%, rgba(242, 200, 121, .18), transparent 70%),
    linear-gradient(150deg, var(--wine) 0%, var(--wine-dark) 52%, var(--ink-2) 100%);
}
.page-about .cta-eyebrow {
  margin: 0 0 10px;
  font-size: 11.5px;
  letter-spacing: .18em;
  color: rgba(245, 239, 228, .8);
}
.page-about .cta-title {
  margin: 0 0 12px;
  font-family: var(--serif);
  font-size: clamp(24px, 4vw, 34px);
  line-height: 1.3;
  color: var(--cream);
}
.page-about .cta-text {
  margin: 0;
  max-width: 52ch;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(245, 239, 228, .82);
}
.page-about .cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.page-about .cta-actions .btn { text-decoration: none; }

/* ---------- 侧栏 ---------- */
.page-about .about-aside {
  display: grid;
  gap: 16px;
  align-content: start;
}
.page-about .about-toc {
  padding: 18px 18px 20px;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: rgba(18, 34, 50, .72);
}
.page-about .toc-heading {
  margin: 0 0 12px;
  font-size: 11.5px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--gold);
}
.page-about .toc-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 2px;
}
.page-about .toc-link {
  display: block;
  padding: 8px 0;
  font-size: 14px;
  color: var(--pa-soft);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--t) var(--ease), border-color var(--t) var(--ease);
}
.page-about .toc-link:hover {
  color: var(--gold);
  border-bottom-color: var(--line-gold);
}
.page-about .aside-card {
  padding: 18px;
  border-radius: var(--r-lg);
  border: 1px solid var(--line-gold);
  background: linear-gradient(160deg, rgba(15, 42, 42, .95), rgba(11, 22, 34, .9));
}
.page-about .aside-card--quiet {
  border-color: var(--line);
  background: rgba(18, 34, 50, .7);
}
.page-about .aside-label {
  margin: 0 0 8px;
  font-size: 11.5px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--gold);
}
.page-about .aside-text {
  margin: 0 0 12px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--pa-soft);
}
.page-about .aside-link { display: inline-block; font-size: 14px; }

/* ---------- 断点 ---------- */
@media (min-width: 720px) {
  .page-about .hero-meta { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .page-about .net-stats { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .page-about .about-cta { padding: 38px 34px 40px; }
}

@media (min-width: 900px) {
  .page-about .hero-grid {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, .94fr);
    gap: 46px;
  }
  .page-about .about-split {
    grid-template-columns: minmax(0, 1fr) minmax(0, .86fr);
    gap: 40px;
    align-items: start;
  }
  .page-about .team-grid {
    grid-template-columns: minmax(0, .82fr) minmax(0, 1fr);
    gap: 40px;
    align-items: start;
  }
  .page-about .version-wrap {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, .65fr);
    gap: 32px;
    align-items: start;
  }
  .page-about .why-list { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .page-about .why-item { padding: 52px 20px 22px; }
  .page-about .why-no { top: 20px; left: 20px; }
  .page-about .about-cta {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 32px;
    padding: 42px 40px 44px;
  }
}

@media (min-width: 1000px) {
  .page-about .about-body-grid {
    grid-template-columns: minmax(0, 1fr) 250px;
    gap: 64px;
    align-items: start;
  }
  .page-about .about-aside {
    position: sticky;
    top: 96px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .version,
  .page-about .inline-link,
  .page-about .toc-link,
  .page-about .breadcrumb-link { transition: none; }
}
<<<END>>>