.page-about {
  --about-card: #0A2138;
  --about-card-2: #0D2841;
  --about-line: rgba(47, 227, 210, 0.16);
  --about-line-soft: rgba(124, 143, 163, 0.22);
  --about-pad: 22px;
  background: var(--night);
  color: var(--paper);
  padding-bottom: 64px;
}

/* ---------- 顶部行 ---------- */
.page-about .about-topline {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px 20px;
  padding-top: 20px;
}
.page-about .about-topline-meta {
  font-size: var(--fs-12);
  color: var(--mist);
  letter-spacing: 0.02em;
  margin: 0;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: 28px 0 40px;
  overflow: hidden;
}
.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: -120px;
  right: -80px;
  width: 320px;
  height: 420px;
  background: linear-gradient(160deg, rgba(47, 227, 210, 0.14), rgba(47, 227, 210, 0));
  clip-path: polygon(38% 0, 100% 0, 100% 100%, 0 74%);
  pointer-events: none;
}
.page-about .about-hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
}
.page-about .about-hero-copy .eyebrow {
  margin-bottom: 10px;
}
.page-about .about-hero-copy h1 {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: var(--fs-28);
  line-height: 1.26;
  letter-spacing: -0.01em;
  margin: 0 0 16px;
  color: var(--paper);
}
.page-about .about-hero-copy .lede {
  margin: 0;
  max-width: 46ch;
  color: rgba(244, 239, 230, 0.82);
}

.page-about .about-facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 0;
  background: var(--about-line-soft);
  border: 1px solid var(--about-line-soft);
  border-radius: var(--radius-sm);
  overflow: hidden;
}
.page-about .about-fact {
  background: var(--about-card);
  padding: 14px 16px;
}
.page-about .about-fact dt {
  font-size: var(--fs-12);
  color: var(--mist);
  letter-spacing: 0.04em;
  margin-bottom: 6px;
}
.page-about .about-fact dd {
  margin: 0;
  font-size: var(--fs-20);
  font-weight: 700;
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
}

/* ---------- 全宽数据带 ---------- */
.page-about .about-band {
  border-top: 1px solid var(--about-line);
  border-bottom: 1px solid var(--about-line);
  background: linear-gradient(90deg, rgba(4, 16, 28, 0.9), rgba(7, 26, 46, 0.4));
}
.page-about .about-band-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  padding-top: 14px;
  padding-bottom: 14px;
}
.page-about .about-band-item {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  font-size: var(--fs-12);
  color: var(--mist);
}
.page-about .about-band-item b {
  font-size: var(--fs-16);
  color: var(--paper);
  font-variant-numeric: tabular-nums;
}

/* ---------- 主布局 ---------- */
.page-about .about-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  padding-top: 40px;
}

/* ---------- 左侧轨道 ---------- */
.page-about .about-rail-title {
  font-size: var(--fs-12);
  color: var(--mist);
  letter-spacing: 0.14em;
  margin: 0 0 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--about-line);
}
.page-about .about-rail-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.page-about .about-rail-link {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 7px 12px;
  border-radius: 999px;
  border: 1px solid var(--about-line-soft);
  font-size: var(--fs-14);
  color: rgba(244, 239, 230, 0.76);
  text-decoration: none;
  transition: color 200ms var(--ease), border-color 200ms var(--ease), background-color 200ms var(--ease);
}
.page-about .about-rail-code {
  font-size: var(--fs-12);
  color: var(--cyan-dim);
}
.page-about .about-rail-link:hover,
.page-about .about-rail-link:focus-visible {
  color: var(--paper);
  border-color: var(--cyan);
  outline: none;
}
.page-about .about-rail-link[aria-current="true"] {
  background: rgba(47, 227, 210, 0.12);
  border-color: var(--cyan);
  color: var(--paper);
}
.page-about .about-rail-link[aria-current="true"] .about-rail-code {
  color: var(--orange);
}

/* ---------- 内容流 ---------- */
.page-about .about-flow {
  display: flex;
  flex-direction: column;
  gap: 44px;
  min-width: 0;
}
.page-about .about-block {
  scroll-margin-top: calc(var(--header-h) + 20px);
}
.page-about .about-block-head {
  margin-bottom: 20px;
}
.page-about .about-block-head .eyebrow {
  margin-bottom: 8px;
}
.page-about .about-h2 {
  font-size: var(--fs-20);
  line-height: 1.34;
  letter-spacing: -0.02em;
  margin: 0;
  color: var(--paper);
}

.page-about .about-quote {
  margin-top: 22px;
  padding: 18px 20px;
  background: var(--about-card);
  border-left: 3px solid var(--cyan);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}
.page-about .about-quote p {
  margin: 0;
  font-family: var(--font-serif);
  font-size: var(--fs-16);
  line-height: 1.8;
  color: rgba(244, 239, 230, 0.9);
}

/* ---------- 模块间小数据带 ---------- */
.page-about .about-mini-band {
  border-top: 1px solid var(--about-line);
  border-bottom: 1px solid var(--about-line);
}
.page-about .about-mini-band--alt {
  border-top-color: rgba(255, 90, 43, 0.28);
}
.page-about .about-mini-band-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 14px;
  padding-top: 10px;
  padding-bottom: 10px;
  font-size: var(--fs-12);
  color: var(--mist);
  letter-spacing: 0.02em;
}
.page-about .about-mini-sep {
  color: var(--cyan-dim);
}

/* ---------- 图片 ---------- */
.page-about .about-figure {
  margin: 0 0 24px;
}
.page-about .about-figure .media-frame {
  aspect-ratio: 3 / 2;
}
.page-about .about-figure .media-frame--wide {
  aspect-ratio: 2 / 1;
}
.page-about .about-map-figure {
  margin: 0;
}
.page-about .about-map-figure .media-frame {
  aspect-ratio: 7 / 5;
}
.page-about .media-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.page-about .media-caption {
  display: block;
  margin-top: 10px;
  font-size: var(--fs-12);
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- 团队比例图 ---------- */
.page-about .about-ratio {
  display: flex;
  height: 22px;
  gap: 3px;
  border-radius: 3px;
  overflow: hidden;
}
.page-about .about-ratio-seg {
  display: block;
  min-width: 6px;
}
.page-about .about-ratio-seg--edit { flex: 12; background: var(--cyan); }
.page-about .about-ratio-seg--design { flex: 4; background: var(--orange); }
.page-about .about-ratio-seg--tech { flex: 9; background: var(--cyan-dim); }
.page-about .about-ratio-seg--ops { flex: 5; background: var(--pitch); }

.page-about .about-ratio-legend {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  margin: 14px 0 0;
  padding: 0;
  font-size: var(--fs-14);
  color: rgba(244, 239, 230, 0.8);
}
.page-about .about-ratio-legend li {
  display: inline-flex;
  align-items: center;
  gap: 7px;
}
.page-about .about-ratio-legend b {
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
}
.page-about .about-swatch {
  width: 10px;
  height: 10px;
  border-radius: 2px;
  flex: none;
}
.page-about .about-swatch--edit { background: var(--cyan); }
.page-about .about-swatch--design { background: var(--orange); }
.page-about .about-swatch--tech { background: var(--cyan-dim); }
.page-about .about-swatch--ops { background: var(--pitch); }
.page-about .about-swatch--core { background: var(--orange); border-radius: 50%; }
.page-about .about-swatch--std { background: var(--cyan-dim); border-radius: 50%; }

.page-about .about-role-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin-top: 28px;
  background: var(--about-line-soft);
  border: 1px solid var(--about-line-soft);
  border-radius: var(--radius-sm);
  overflow: hidden;
}
.page-about .about-role {
  background: var(--about-card);
  padding: 18px var(--about-pad);
}
.page-about .about-role-title {
  margin: 0 0 8px;
  font-size: var(--fs-16);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--cyan);
}
.page-about .about-role p {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.78;
  color: rgba(244, 239, 230, 0.78);
}

/* ---------- 数据来源 ---------- */
.page-about .about-source-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}
.page-about .about-source-panel .panel-title {
  font-size: var(--fs-16);
}
.page-about .about-source-text {
  margin: 0 0 12px;
  font-size: var(--fs-14);
  line-height: 1.85;
  color: var(--paper-ink);
}
.page-about .about-source-text:last-child {
  margin-bottom: 0;
}
.page-about .about-side-title {
  margin: 0 0 12px;
  font-size: var(--fs-14);
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--orange);
}
.page-about .about-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.page-about .about-list li {
  position: relative;
  padding-left: 18px;
  font-size: var(--fs-14);
  line-height: 1.8;
  color: rgba(244, 239, 230, 0.8);
}
.page-about .about-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.68em;
  width: 8px;
  height: 1px;
  background: var(--cyan-dim);
}

/* ---------- 主场地图 ---------- */
.page-about .about-map-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}
.page-about .about-node-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 12px 10px;
  padding: 18px var(--about-pad);
  background: var(--about-card);
  border: 1px solid var(--about-line);
  border-radius: var(--radius-sm);
}
.page-about .about-node {
  display: block;
  width: 12px;
  height: 12px;
  margin: 0 auto;
  border-radius: 50%;
  background: transparent;
  border: 1px solid var(--cyan-dim);
  transition: transform 160ms var(--ease), border-color 160ms var(--ease), background-color 160ms var(--ease);
}
.page-about .about-node--core {
  background: var(--orange);
  border-color: var(--orange);
  box-shadow: 0 0 0 4px rgba(255, 90, 43, 0.16);
}
.page-about .about-node:hover {
  transform: translateY(-2px);
  border-color: var(--cyan);
}
.page-about .about-map-key {
  margin: 18px 0 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.page-about .about-map-key div {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  font-size: var(--fs-14);
  padding-bottom: 8px;
  border-bottom: 1px dashed var(--about-line-soft);
}
.page-about .about-map-key dt {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: rgba(244, 239, 230, 0.8);
}
.page-about .about-map-key dd {
  margin: 0;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  color: var(--paper);
  font-size: var(--fs-14);
}
.page-about .about-map-note {
  margin: 16px 0 0;
  font-size: var(--fs-14);
  line-height: 1.85;
  color: var(--mist);
}

/* ---------- 版本列表 ---------- */
.page-about .about-versions {
  list-style: none;
  margin: 0;
  padding: 0;
  border-left: 1px solid var(--about-line);
}
.page-about .about-version {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  padding: 0 0 26px 22px;
}
.page-about .about-version:last-child {
  padding-bottom: 0;
}
.page-about .about-version::before {
  content: "";
  position: absolute;
  left: -4.5px;
  top: 6px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--night);
  border: 2px solid var(--cyan-dim);
}
.page-about .about-version-code {
  display: inline-block;
  align-self: start;
  padding: 3px 10px;
  font-size: var(--fs-12);
  letter-spacing: 0.06em;
  color: var(--cyan);
  border: 1px solid var(--about-line);
  border-radius: 999px;
  background: rgba(47, 227, 210, 0.06);
}
.page-about .about-version-code--hot {
  color: var(--orange);
  border-color: rgba(255, 90, 43, 0.5);
  background: rgba(255, 90, 43, 0.1);
}
.page-about .about-version-title {
  margin: 0 0 6px;
  font-size: var(--fs-16);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--paper);
}
.page-about .about-version-body p {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.85;
  color: rgba(244, 239, 230, 0.78);
}

/* ---------- 服务边界 ---------- */
.page-about .about-boundary {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}
.page-about .about-boundary-main p {
  margin: 0 0 14px;
  font-size: var(--fs-16);
  line-height: 1.85;
  color: rgba(244, 239, 230, 0.86);
}
.page-about .about-boundary-main p:last-child {
  margin-bottom: 0;
}
.page-about .about-boundary-side {
  padding: 20px var(--about-pad);
  background: var(--about-card-2);
  border: 1px solid var(--about-line);
  border-left: 3px solid var(--orange);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}
.page-about .about-boundary-side .about-side-title {
  color: var(--paper);
  font-size: var(--fs-16);
}
.page-about .about-boundary-side .btn-row {
  margin-top: 4px;
}
.page-about .about-side-note {
  margin: 16px 0 0;
  font-size: var(--fs-12);
  line-height: 1.75;
  color: var(--mist);
}

/* ---------- 页尾引导 ---------- */
.page-about .about-tail {
  margin-top: 8px;
  padding: 26px var(--about-pad);
  background: linear-gradient(120deg, rgba(47, 227, 210, 0.1), rgba(4, 16, 28, 0.2) 62%);
  border: 1px solid var(--about-line);
  border-radius: var(--radius-sm);
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.page-about .about-tail-text {
  margin: 10px 0 0;
  font-size: var(--fs-14);
  line-height: 1.8;
  color: rgba(244, 239, 230, 0.78);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-about .about-role-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-about .about-facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .page-about .about-version {
    grid-template-columns: 120px minmax(0, 1fr);
    gap: 20px;
  }
  .page-about .about-tail {
    flex-direction: row;
    align-items: flex-end;
    justify-content: space-between;
    gap: 32px;
  }
  .page-about .about-tail .btn-row {
    flex: none;
  }
}

@media (min-width: 960px) {
  .page-about {
    --about-pad: 28px;
  }
  .page-about .about-hero {
    padding: 36px 0 52px;
  }
  .page-about .about-hero-copy h1 {
    font-size: var(--fs-40);
  }
  .page-about .about-hero-grid {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    align-items: start;
    gap: 56px;
  }
  .page-about .about-facts {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-about .about-layout {
    grid-template-columns: 196px minmax(0, 1fr);
    gap: 56px;
    padding-top: 56px;
  }
  .page-about .about-rail-sticky {
    position: sticky;
    top: calc(var(--header-h) + 28px);
  }
  .page-about .about-rail-nav {
    flex-direction: column;
    gap: 2px;
  }
  .page-about .about-rail-link {
    border: none;
    border-left: 2px solid transparent;
    border-radius: 0;
    padding: 8px 0 8px 12px;
    justify-content: flex-start;
  }
  .page-about .about-rail-link[aria-current="true"] {
    background: transparent;
    border-left-color: var(--orange);
  }
  .page-about .about-flow {
    gap: 60px;
  }
  .page-about .about-h2 {
    font-size: var(--fs-28);
  }
  .page-about .about-source-grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
    gap: 32px;
    align-items: start;
  }
  .page-about .about-map-grid {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
    gap: 36px;
    align-items: start;
  }
  .page-about .about-boundary {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    gap: 40px;
    align-items: start;
  }
  .page-about .about-figure .media-frame {
    aspect-ratio: 2 / 1;
  }
}
<<<END>>>