.page-about {
  --about-rail: 128px;
  --about-gap: clamp(20px, 3vw, 44px);
  --lead: #D8E3E7;
  --ink: #04150F;
  --ink-soft: #35544B;
  background: var(--night);
  color: var(--silver);
  font-family: var(--font-body);
}

/* 面包屑 */
.page-about .breadcrumb {
  padding-top: clamp(14px, 2vw, 22px);
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .08em;
  opacity: .88;
}
.page-about .breadcrumb a {
  color: var(--cyan);
  text-decoration: none;
}
.page-about .breadcrumb a:hover,
.page-about .breadcrumb a:focus-visible {
  text-decoration: underline;
}

/* 首屏 */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(22px, 3.6vw, 42px) 0 clamp(30px, 4.6vw, 58px);
  border-bottom: 1px solid var(--rule);
  background-color: var(--night);
  background-image:
    linear-gradient(120deg, rgba(52, 241, 212, .10) 0%, rgba(52, 241, 212, 0) 46%),
    repeating-linear-gradient(120deg, var(--rule) 0 1px, transparent 1px 54px);
}
.page-about .about-hero::after {
  content: "";
  position: absolute;
  right: -70px;
  top: 34px;
  width: 220px;
  height: 220px;
  border: 1px solid var(--rule-strong);
  transform: rotate(45deg);
  pointer-events: none;
}
.page-about .about-hero__inner {
  position: relative;
  z-index: 1;
}
.page-about .about-hero__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.05rem, 6.2vw, 4.8rem);
  line-height: 1.02;
  letter-spacing: -.01em;
  color: var(--white);
  margin: 14px 0 0;
  max-width: 22ch;
}
.page-about .about-hero__title em {
  font-style: normal;
  color: var(--cyan);
  box-shadow: inset 0 -.18em 0 var(--orange-soft);
}
.page-about .about-hero__lead {
  margin: 20px 0 0;
  max-width: 42rem;
  font-size: clamp(1rem, 1.6vw, 1.1rem);
  line-height: 1.78;
  color: var(--silver);
}

.page-about .about-hero__meta {
  margin: clamp(26px, 4vw, 44px) 0 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--rule);
  border: 1px solid var(--rule);
}
@media (min-width: 720px) {
  .page-about .about-hero__meta { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}
.page-about .about-meta__item {
  background: var(--night-2);
  padding: 16px 18px;
  margin: 0;
}
.page-about .about-meta__label {
  display: block;
  font-size: .76rem;
  letter-spacing: .1em;
  color: var(--silver);
  opacity: .8;
  margin: 0 0 8px;
}
.page-about .about-meta__value {
  display: block;
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(1.35rem, 2.6vw, 1.95rem);
  line-height: 1.05;
  color: var(--cyan);
}

/* 主体栅格 */
.page-about .about-body {
  padding-bottom: clamp(40px, 6vw, 84px);
}
.page-about .about-flow {
  min-width: 0;
}
.page-about .about-rail {
  display: none;
}
@media (min-width: 1100px) {
  .page-about .about-body {
    display: grid;
    grid-template-columns: var(--about-rail) minmax(0, 1fr);
    column-gap: var(--about-gap);
    align-items: start;
  }
  .page-about .about-rail {
    display: block;
    position: sticky;
    top: calc(var(--header-h) + 24px);
    align-self: start;
    padding-top: clamp(30px, 4vw, 56px);
  }
}
.page-about .about-rail__title {
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .22em;
  color: var(--silver);
  opacity: .68;
  margin: 0 0 14px;
}
.page-about .about-rail__list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-left: 1px solid var(--rule);
  display: flex;
  flex-direction: column;
}
.page-about .about-rail__link {
  display: flex;
  gap: 8px;
  align-items: baseline;
  margin-left: -1px;
  padding: 7px 0 7px 12px;
  border-left: 2px solid transparent;
  color: var(--silver);
  font-size: .82rem;
  line-height: 1.35;
  text-decoration: none;
}
.page-about .about-rail__link:hover,
.page-about .about-rail__link:focus-visible {
  color: var(--cyan);
  border-left-color: var(--cyan);
  background: var(--cyan-soft);
}
.page-about .about-rail__no {
  font-family: var(--font-mono);
  font-size: .72rem;
  color: var(--cyan);
}

/* 章节 */
.page-about .about-sec {
  border-top: 1px solid var(--rule);
  padding: clamp(34px, 5vw, 64px) 0;
}
.page-about .about-flow > .about-sec:first-child {
  border-top: 0;
  padding-top: clamp(28px, 4vw, 48px);
}
.page-about .about-sec__no {
  display: block;
  font-family: var(--font-mono);
  font-size: .76rem;
  letter-spacing: .18em;
  color: var(--cyan);
  margin-bottom: 10px;
}
.page-about .about-h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.5rem, 3.6vw, 2.35rem);
  line-height: 1.16;
  color: var(--white);
  margin: 0 0 14px;
  max-width: 24ch;
}
.page-about .about-lead {
  margin: 0 0 18px;
  max-width: 44ch;
  font-size: clamp(1rem, 1.5vw, 1.06rem);
  line-height: 1.75;
  color: var(--lead);
}
.page-about .about-text {
  margin: 0;
  max-width: 62ch;
  font-size: 1rem;
  line-height: 1.82;
  color: var(--silver);
}
.page-about .about-text strong {
  color: var(--white);
  font-weight: 600;
  box-shadow: inset 0 -.55em 0 var(--cyan-soft);
}

/* 三条说明 */
.page-about .about-facts {
  list-style: none;
  margin: clamp(22px, 3vw, 34px) 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--rule);
  border: 1px solid var(--rule);
}
@media (min-width: 760px) {
  .page-about .about-facts { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}
.page-about .about-fact {
  background: var(--night-2);
  padding: clamp(16px, 2.4vw, 24px);
}
.page-about .about-fact__title {
  font-family: var(--font-display);
  font-size: 1.05rem;
  letter-spacing: .02em;
  color: var(--cyan);
  margin: 0 0 8px;
}
.page-about .about-fact__text {
  margin: 0;
  font-size: .94rem;
  line-height: 1.72;
  color: var(--silver);
}

/* 档案标签式引用 */
.page-about .about-note {
  margin: clamp(22px, 3vw, 32px) 0 0;
  padding: 4px 0 4px 18px;
  border-left: 3px solid var(--amber);
  background: linear-gradient(90deg, var(--amber-soft), transparent 72%);
}
.page-about .about-note__label {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .18em;
  color: var(--amber);
}
.page-about .about-note p:last-child {
  margin: 0;
  max-width: 52ch;
  font-size: 1rem;
  line-height: 1.78;
  color: var(--lead);
}

/* 版本时间轴 */
.page-about .version-track {
  list-style: none;
  margin: clamp(24px, 3vw, 36px) 0 0;
  padding: 0;
  position: relative;
}
.page-about .version-track::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 10px;
  bottom: 10px;
  width: 1px;
  background: var(--rule-strong);
}
.page-about .version {
  position: relative;
  display: grid;
  grid-template-columns: 22px minmax(0, 1fr);
  column-gap: 16px;
  padding-bottom: clamp(26px, 3.4vw, 42px);
}
.page-about .version:last-child {
  padding-bottom: 0;
}
.page-about .version__marker {
  padding-top: 6px;
}
.page-about .version__dot {
  display: block;
  width: 13px;
  height: 13px;
  background: var(--night);
}
.page-about .version__dot--amber {
  border: 2px solid var(--amber);
  box-shadow: 0 0 0 3px var(--amber-soft);
}
.page-about .version__dot--cyan {
  border: 2px solid var(--cyan);
  box-shadow: 0 0 0 3px var(--cyan-soft);
}
.page-about .version:hover .version__title {
  color: var(--cyan);
}
.page-about .version__ver {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: .76rem;
  letter-spacing: .14em;
  color: var(--silver);
  opacity: .9;
}
.page-about .version__ver b {
  color: var(--cyan);
  font-weight: 600;
  margin-right: 6px;
}
.page-about .version__title {
  font-family: var(--font-display);
  font-size: clamp(1.15rem, 2.2vw, 1.5rem);
  line-height: 1.25;
  color: var(--white);
  margin: 0 0 10px;
  transition: color .2s ease;
}
.page-about .version__text {
  margin: 0;
  max-width: 56ch;
  font-size: .98rem;
  line-height: 1.78;
  color: var(--silver);
}
.page-about .version__points {
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 10px;
}
.page-about .version__points li {
  font-family: var(--font-mono);
  font-size: .75rem;
  letter-spacing: .03em;
  color: var(--silver);
  border: 1px solid var(--rule-strong);
  padding: 5px 9px;
}
.page-about .version__figure {
  margin: clamp(18px, 2.4vw, 26px) 0 0;
  max-width: 320px;
}
@media (min-width: 900px) {
  .page-about .version__figure { margin-left: auto; }
}
.page-about .version__figure img {
  max-width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}

/* 数据来源 */
.page-about .about-map {
  margin: clamp(20px, 3vw, 30px) 0 0;
}
.page-about .node-map {
  display: block;
  width: 100%;
  max-width: 760px;
  height: auto;
  padding: 10px;
  border: 1px solid var(--rule);
  background: linear-gradient(180deg, rgba(10, 42, 32, .92), rgba(4, 21, 15, .92));
}
.page-about .node-map text {
  font-family: var(--font-mono);
  font-size: 12px;
  fill: var(--silver);
}
.page-about .node-map .nm-label {
  text-anchor: middle;
}
.page-about .node-map .nm-hub-text {
  text-anchor: middle;
  font-size: 13px;
  fill: var(--white);
}
.page-about .node-map .nm-line {
  stroke: var(--rule-strong);
  stroke-width: 1;
  fill: none;
}
.page-about .node-map .nm-node {
  fill: none;
  stroke: var(--silver);
  stroke-width: 1;
}
.page-about .node-map .nm-node--main {
  stroke: var(--cyan);
  stroke-width: 1.5;
  fill: rgba(52, 241, 212, .08);
}
.page-about .node-map .nm-node--backup {
  stroke: var(--amber);
  stroke-width: 1.5;
  fill: rgba(233, 180, 76, .08);
}
.page-about .node-map .pulse {
  fill: var(--cyan);
  animation: aboutNodePulse 2.6s ease-in-out infinite;
}
.page-about .node-map .pulse--b { animation-delay: .9s; }
.page-about .node-map .pulse--c { animation-delay: 1.7s; }
@keyframes aboutNodePulse {
  0%, 100% { opacity: .18; }
  50% { opacity: 1; }
}
.page-about .about-map__caption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .04em;
  color: var(--silver);
  opacity: .78;
}

.page-about .data-list {
  list-style: none;
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--rule);
  border: 1px solid var(--rule);
}
@media (min-width: 560px) {
  .page-about .data-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (min-width: 1000px) {
  .page-about .data-list { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}
.page-about .data-item {
  background: var(--night-2);
  padding: 16px 18px;
}
.page-about .data-item__v {
  display: block;
  font-family: var(--font-mono);
  font-size: 1.32rem;
  line-height: 1.15;
  color: var(--white);
}
.page-about .data-item__v i {
  font-style: normal;
  font-size: .78rem;
  color: var(--cyan);
  margin-left: 4px;
}
.page-about .data-item__k {
  display: block;
  margin-top: 8px;
  font-size: .8rem;
  line-height: 1.55;
  color: var(--silver);
  opacity: .9;
}

/* 浅色区段 */
.page-about .about-slab {
  background: var(--panel);
  color: var(--ink);
  margin: clamp(10px, 2vw, 18px) 0;
  padding: 0 clamp(18px, 3vw, 40px);
  border-left: 3px solid var(--teal);
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}
.page-about .about-slab .about-sec {
  border-top-color: rgba(4, 21, 15, .14);
}
.page-about .about-slab .about-sec:first-child {
  border-top: 0;
}
.page-about .about-slab .about-sec__no {
  color: var(--teal);
}
.page-about .about-slab .about-h2 {
  color: var(--ink);
}
.page-about .about-slab .about-lead {
  color: var(--ink-soft);
}
.page-about .about-slab .about-text {
  color: var(--ink-soft);
}
.page-about .about-slab .about-text strong {
  color: var(--ink);
  box-shadow: inset 0 -.55em 0 rgba(52, 241, 212, .38);
}
.page-about .about-slab .media__caption {
  color: var(--ink-soft);
}

/* 团队分工 */
.page-about .team-rows {
  list-style: none;
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 0;
}
.page-about .team-row {
  display: grid;
  grid-template-columns: minmax(56px, 84px) minmax(0, 1fr);
  column-gap: 16px;
  padding: 18px 0;
  border-top: 1px solid rgba(4, 21, 15, .14);
}
.page-about .team-row:first-child {
  border-top: 1px solid rgba(4, 21, 15, .3);
}
.page-about .team-row__num {
  font-family: var(--font-mono);
  font-size: clamp(1.5rem, 3vw, 2rem);
  line-height: 1;
  color: var(--teal);
}
.page-about .team-row__title {
  font-family: var(--font-display);
  font-size: 1.05rem;
  color: var(--ink);
  margin: 0 0 6px;
}
.page-about .team-row__text {
  margin: 0;
  font-size: .95rem;
  line-height: 1.76;
  color: var(--ink-soft);
}

/* 本地协作 */
.page-about .partner-list {
  list-style: none;
  margin: clamp(18px, 2.6vw, 26px) 0 0;
  padding: 0;
}
.page-about .partner-list li {
  position: relative;
  padding: 12px 0 12px 22px;
  border-top: 1px solid rgba(4, 21, 15, .14);
  font-size: .95rem;
  line-height: 1.72;
  color: var(--ink-soft);
}
.page-about .partner-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 19px;
  width: 8px;
  height: 8px;
  background: var(--orange);
}

/* 荣誉 */
.page-about .honor-list {
  list-style: none;
  margin: clamp(22px, 3vw, 32px) 0 0;
  padding: 0;
  display: grid;
  gap: clamp(16px, 2.2vw, 24px);
}
@media (min-width: 820px) {
  .page-about .honor-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
.page-about .honor {
  border-top: 2px solid var(--amber);
  padding: 16px 0 0;
}
.page-about .honor__year {
  display: block;
  font-family: var(--font-mono);
  font-size: .8rem;
  letter-spacing: .16em;
  color: var(--amber);
}
.page-about .honor__title {
  font-family: var(--font-display);
  font-size: 1.16rem;
  line-height: 1.3;
  color: var(--white);
  margin: 10px 0 8px;
}
.page-about .honor__text {
  margin: 0;
  font-size: .94rem;
  line-height: 1.74;
  color: var(--silver);
}

/* 收尾 */
.page-about .about-cta {
  margin-top: clamp(30px, 4vw, 56px);
  padding: clamp(22px, 3.4vw, 40px);
  border: 1px solid var(--rule-strong);
  border-top: 3px solid var(--cyan);
  background: linear-gradient(135deg, var(--night-2), var(--night));
}
.page-about .about-cta__title {
  font-family: var(--font-display);
  font-size: clamp(1.3rem, 2.6vw, 1.85rem);
  line-height: 1.2;
  color: var(--white);
  margin: 0 0 12px;
}
.page-about .about-cta__text {
  margin: 0 0 20px;
  max-width: 54ch;
  line-height: 1.78;
  color: var(--silver);
}
.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* 图片自适应 */
.page-about .media img {
  max-width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}
.page-about .about-slab .media {
  margin: 0 0 clamp(22px, 3vw, 32px);
}

@media (prefers-reduced-motion: reduce) {
  .page-about .node-map .pulse {
    animation: none;
    opacity: .9;
  }
  .page-about .version__title {
    transition: none;
  }
}
<<<END>>>