.page-about {
  --about-paper-shadow: 0 20px 44px rgba(10, 16, 32, 0.42);
  --about-ink-soft: rgba(42, 36, 25, 0.78);
  --about-ink-key: rgba(42, 36, 25, 0.6);
  --about-rail-col: 34px;
  --about-rail-gap: 18px;
}

/* ---------- 面包屑 ---------- */
.page-about .about-crumbs {
  padding-top: clamp(14px, 2.5vw, 26px);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding-top: clamp(18px, 3vw, 34px);
}

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 42px);
}

@media (min-width: 920px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
    align-items: end;
    gap: clamp(32px, 5vw, 64px);
  }
}

.page-about .about-hero__eyebrow {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--cyan-400);
}

.page-about h1 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(28px, 5.4vw, 54px);
  line-height: 1.18;
  letter-spacing: 0.04em;
  color: var(--text-100);
  max-width: 18ch;
}

.page-about .about-hero__lead {
  margin: clamp(18px, 2.6vw, 26px) 0 0;
  max-width: 54ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.9;
  color: var(--text-400);
}

.page-about .about-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: clamp(24px, 3.4vw, 36px) 0 0;
  padding: 0;
}

.page-about .about-hero__facts .fact {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 11px 18px;
  border: 1px solid var(--ink-700);
  border-radius: var(--r-sm);
  background: var(--ink-850);
}

.page-about .about-hero__facts .fact-key {
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--text-400);
}

.page-about .about-hero__facts .fact-value {
  margin: 0;
  font-size: 15px;
  letter-spacing: 0.04em;
  color: var(--text-100);
}

.page-about .about-hero__media {
  margin: 0;
  border: 1px solid var(--ink-700);
  border-radius: var(--r-lg);
  overflow: hidden;
  background: var(--ink-850);
  box-shadow: 0 24px 48px rgba(10, 16, 32, 0.5);
}

.page-about .about-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

/* ---------- 归位线 ---------- */
.page-about .homing-line {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  margin-top: clamp(30px, 5vw, 54px);
  padding-top: 18px;
  border-top: 1px solid var(--ink-700);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--text-400);
  text-decoration: none;
  transition: color 160ms var(--ease);
}

.page-about .homing-line:hover,
.page-about .homing-line:focus-visible {
  color: var(--cyan-400);
}

.page-about .homing-line__label {
  flex: 0 0 auto;
  white-space: nowrap;
}

.page-about .homing-line__track {
  flex: 1 1 auto;
  min-width: 32px;
  height: 1px;
  background: linear-gradient(90deg, var(--cyan-700), var(--cyan-400) 42%, var(--neon-500));
}

.page-about .homing-line .homing-dot {
  flex: 0 0 auto;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--neon-500);
  box-shadow: 0 0 0 4px rgba(255, 122, 51, 0.16);
  animation: about-pulse 2.4s var(--ease) infinite;
}

@keyframes about-pulse {
  0%, 100% { box-shadow: 0 0 0 4px rgba(255, 122, 51, 0.16); }
  50% { box-shadow: 0 0 0 9px rgba(255, 122, 51, 0.04); }
}

/* ---------- 通用章节 ---------- */
.page-about .about-section {
  padding-block: clamp(44px, 7vw, 84px);
}

.page-about .about-head {
  margin-bottom: clamp(26px, 4vw, 44px);
}

.page-about .about-head--annot {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 28px;
}

.page-about .about-head--annot .annot {
  display: none;
}

@media (min-width: 900px) {
  .page-about .about-head--annot .annot {
    display: block;
    flex: 0 0 auto;
    margin: 0;
  }
}

.page-about .about-head__eyebrow {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--cyan-400);
}

.page-about .about-head__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(23px, 3.4vw, 36px);
  line-height: 1.28;
  letter-spacing: 0.03em;
  color: var(--text-100);
}

.page-about .about-head__lead {
  margin: 14px 0 0;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--text-400);
}

.page-about .about-copy p {
  margin: 0 0 18px;
  font-size: 16px;
  line-height: 1.9;
  color: var(--text-100);
}

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

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

/* ---------- 版本时间线 ---------- */
.page-about .version-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .version-item {
  display: grid;
  grid-template-columns: var(--about-rail-col) minmax(0, 1fr);
  column-gap: var(--about-rail-gap);
}

.page-about .version-item--v1 { padding-bottom: 84px; }
.page-about .version-item--v2 { padding-bottom: 62px; }
.page-about .version-item--v3 { padding-bottom: 44px; }
.page-about .version-item--v4 { padding-bottom: 0; }

@media (min-width: 760px) {
  .page-about {
    --about-rail-col: 64px;
    --about-rail-gap: 28px;
  }
  .page-about .version-item--v1 { padding-bottom: 104px; }
  .page-about .version-item--v2 { padding-bottom: 78px; }
  .page-about .version-item--v3 { padding-bottom: 52px; }
}

.page-about .version-rail {
  position: relative;
}

.page-about .version-rail::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 26px;
  bottom: 0;
  width: 1px;
  transform: translateX(-50%);
  background: linear-gradient(180deg, var(--cyan-700), rgba(47, 227, 208, 0.1));
}

.page-about .version-node {
  position: absolute;
  left: 50%;
  top: 26px;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  background: var(--cyan-400);
  box-shadow: 0 0 0 4px rgba(47, 227, 208, 0.12);
  transition: background 160ms var(--ease), box-shadow 160ms var(--ease);
}

.page-about .version-item--v1 .version-node { width: 8px; height: 8px; }
.page-about .version-item--v2 .version-node { width: 11px; height: 11px; }
.page-about .version-item--v3 .version-node { width: 14px; height: 14px; }

.page-about .version-item--v4 .version-node {
  width: 18px;
  height: 18px;
  background: var(--neon-500);
  box-shadow: 0 0 0 5px rgba(255, 122, 51, 0.16);
}

.page-about .version-item:hover .version-node,
.page-about .version-item:focus-within .version-node {
  background: var(--neon-500);
  box-shadow: 0 0 0 7px rgba(255, 122, 51, 0.14);
}

.page-about .version-card {
  border: 1px solid var(--ink-700);
  border-radius: var(--r-md);
  background: var(--ink-850);
  padding: clamp(18px, 2.6vw, 28px);
  transition: border-color 160ms var(--ease), background 160ms var(--ease);
}

.page-about .version-card:hover {
  border-color: var(--cyan-400);
}

.page-about .version-item--v4 .version-card {
  border-color: rgba(47, 227, 208, 0.42);
  background: linear-gradient(145deg, rgba(47, 227, 208, 0.09), var(--ink-850) 58%);
}

.page-about .version-card__tag {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--neon-500);
}

.page-about .version-card__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(18px, 2.2vw, 23px);
  line-height: 1.4;
  letter-spacing: 0.02em;
  color: var(--text-100);
}

.page-about .version-card__text {
  margin: 12px 0 0;
  font-size: 15px;
  line-height: 1.9;
  color: var(--text-400);
}

/* ---------- 旧档纸面区 ---------- */
.page-about .about-archive {
  position: relative;
  overflow: hidden;
  border-radius: var(--r-lg);
  padding: clamp(26px, 5vw, 60px);
  background: var(--paper-100);
  color: var(--ink-on-paper);
  box-shadow: var(--about-paper-shadow);
}

.page-about .about-archive::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    repeating-linear-gradient(0deg, rgba(42, 36, 25, 0.045) 0 1px, transparent 1px 5px),
    repeating-linear-gradient(90deg, rgba(42, 36, 25, 0.024) 0 1px, transparent 1px 7px);
}

.page-about .about-archive > * {
  position: relative;
  z-index: 1;
}

.page-about .about-archive__eyebrow {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--about-ink-key);
}

.page-about .about-archive__title {
  margin: 0;
  font-family: var(--font-archive);
  font-size: clamp(24px, 3.4vw, 38px);
  line-height: 1.32;
  color: var(--ink-on-paper);
}

.page-about .about-archive__lead {
  margin: 16px 0 0;
  max-width: 58ch;
  font-size: 16px;
  line-height: 2;
  color: var(--about-ink-soft);
}

.page-about .about-archive__types {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gap);
  margin-top: clamp(26px, 4vw, 42px);
}

@media (min-width: 700px) {
  .page-about .about-archive__types {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-about .archive-card {
  border: 1px solid var(--paper-300);
  border-radius: var(--r-sm);
  background: rgba(255, 255, 255, 0.5);
  padding: 18px 20px 20px;
  transition: border-color 160ms var(--ease), background 160ms var(--ease);
}

.page-about .archive-card:hover,
.page-about .archive-card:focus-within {
  border-color: var(--cyan-700);
  background: rgba(255, 255, 255, 0.78);
}

.page-about .archive-card__code {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--about-ink-key);
}

.page-about .archive-card__title {
  margin: 0;
  font-family: var(--font-archive);
  font-size: 20px;
  line-height: 1.42;
  color: var(--ink-on-paper);
}

.page-about .archive-card__text {
  margin: 10px 0 0;
  font-size: 15px;
  line-height: 1.95;
  color: var(--about-ink-soft);
}

.page-about .about-archive__lower {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 44px);
  margin-top: clamp(28px, 4vw, 46px);
}

@media (min-width: 880px) {
  .page-about .about-archive__lower {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    align-items: start;
  }
}

.page-about .about-archive__notes h3 {
  margin: 0 0 10px;
  font-family: var(--font-archive);
  font-size: 20px;
  line-height: 1.45;
  color: var(--ink-on-paper);
}

.page-about .about-archive__notes p {
  margin: 0 0 24px;
  font-size: 15px;
  line-height: 2;
  color: var(--about-ink-soft);
}

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

.page-about .about-archive__media {
  margin: 0;
}

.page-about .about-archive__media img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--paper-300);
  border-radius: var(--r-sm);
  box-shadow: 0 16px 30px rgba(42, 36, 25, 0.16);
}

/* ---------- 团队 ---------- */
.page-about .team-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 44px);
}

@media (min-width: 860px) {
  .page-about .team-grid {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
    align-items: start;
  }
}

.page-about .team-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-about .team-stat {
  flex: 1 1 120px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 20px 22px;
  border: 1px solid var(--ink-700);
  border-radius: var(--r-md);
  background: var(--ink-850);
}

.page-about .team-stat__num {
  font-size: clamp(30px, 4vw, 42px);
  line-height: 1;
  letter-spacing: 0.04em;
  color: var(--cyan-400);
}

.page-about .team-stat__label {
  font-size: 14px;
  letter-spacing: 0.04em;
  color: var(--text-400);
}

.page-about .team-media {
  margin: clamp(28px, 4vw, 46px) 0 0;
  border: 1px solid var(--ink-700);
  border-radius: var(--r-lg);
  overflow: hidden;
  background: var(--ink-850);
}

.page-about .team-media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 12 / 7;
  object-fit: cover;
}

/* ---------- 覆盖范围 ---------- */
.page-about .city-list {
  list-style: none;
  margin: clamp(22px, 3vw, 32px) 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-about .city-list li {
  padding: 6px 15px;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--text-400);
  background: var(--ink-850);
  border: 1px solid var(--ink-700);
  border-radius: var(--r-pill);
  transition: border-color 160ms var(--ease), color 160ms var(--ease);
}

.page-about .city-list li:hover {
  border-color: var(--cyan-400);
  color: var(--cyan-400);
}

/* ---------- 运行指标 ---------- */
.page-about .metric-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: clamp(16px, 2.4vw, 24px);
}

.page-about .metric {
  position: relative;
  border: 1px solid var(--ink-700);
  border-radius: var(--r-md);
  background: var(--ink-850);
  padding: clamp(22px, 3vw, 30px);
  overflow: hidden;
}

.page-about .metric::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan-400), var(--neon-500));
  opacity: 0.85;
}

.page-about .metric__num {
  margin: 0;
  font-size: clamp(34px, 4.6vw, 50px);
  line-height: 1;
  letter-spacing: 0.03em;
  color: var(--text-100);
}

.page-about .metric__unit {
  margin-left: 4px;
  font-size: 15px;
  letter-spacing: 0.06em;
  color: var(--cyan-400);
}

.page-about .metric__title {
  margin: 16px 0 10px;
  font-family: var(--font-display);
  font-size: 17px;
  letter-spacing: 0.03em;
  color: var(--text-100);
}

.page-about .metric__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.9;
  color: var(--text-400);
}

/* ---------- 延伸入口 ---------- */
.page-about .about-next__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(22px, 3.2vw, 32px);
  line-height: 1.3;
  letter-spacing: 0.03em;
  color: var(--text-100);
}

.page-about .about-next__lead {
  margin: 14px 0 0;
  max-width: 52ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--text-400);
}

.page-about .about-next__links {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gap);
  margin-top: clamp(24px, 4vw, 38px);
}

@media (min-width: 700px) {
  .page-about .about-next__links {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.page-about .next-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 22px;
  border: 1px solid var(--ink-700);
  border-radius: var(--r-md);
  background: var(--ink-850);
  color: var(--text-100);
  text-decoration: none;
  transition: border-color 160ms var(--ease), background 160ms var(--ease), transform 160ms var(--ease);
}

.page-about .next-link:hover,
.page-about .next-link:focus-visible {
  border-color: var(--cyan-400);
  background: var(--ink-800);
}

.page-about .next-link:active {
  transform: translateY(1px);
}

.page-about .next-link__title {
  display: block;
  font-size: 17px;
  font-weight: 600;
  letter-spacing: 0.03em;
  color: var(--text-100);
}

.page-about .next-link__meta {
  display: block;
  margin-top: 5px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--text-400);
}

.page-about .next-link__arrow {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 18px;
  color: var(--cyan-400);
  transition: transform 160ms var(--ease);
}

.page-about .next-link:hover .next-link__arrow {
  transform: translateX(3px);
}

/* ---------- 降级与动效偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-about .homing-line .homing-dot {
    animation: none;
  }
  .page-about .next-link:hover .next-link__arrow {
    transform: none;
  }
}
</｜｜DSML｜｜ parameter>
</invoke>