.page-about {
  --about-panel: rgba(43, 35, 80, 0.42);
  --about-hair: var(--c-line-soft);
  --about-hair-strong: var(--c-line);
  background:
    radial-gradient(120% 70% at 88% 0%, rgba(43, 35, 80, 0.9), transparent 62%),
    var(--c-night);
  color: var(--c-ice);
  font-family: var(--font-body);
  line-height: 1.7;
  padding-block: clamp(18px, 3vw, 32px) clamp(48px, 7vw, 96px);
  overflow-x: hidden;
}

.page-about .about-shell {
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

/* 面包屑 */
.page-about .about-crumb {
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  color: var(--c-mist);
  margin-bottom: clamp(16px, 3vw, 26px);
}
.page-about .about-crumb .breadcrumbs__list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin: 0;
  padding: 0;
}
.page-about .about-crumb li {
  display: inline-flex;
  align-items: center;
}
.page-about .about-crumb li + li::before {
  content: "/";
  margin-right: 0.45rem;
  color: var(--c-teal);
}
.page-about .about-crumb a {
  color: var(--c-mist);
  text-decoration: none;
}
.page-about .about-crumb a:hover,
.page-about .about-crumb a:focus-visible {
  color: var(--c-teal);
}

/* 双轨布局 */
.page-about .about-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 4vw, 52px);
}

.page-about .about-rail {
  border-top: 1px solid var(--about-hair-strong);
  padding-top: 12px;
}
.page-about .about-rail__title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--c-mist);
}
.page-about .about-rail__nav {
  display: flex;
  gap: 6px;
  overflow-x: auto;
  padding-bottom: 6px;
  scrollbar-width: none;
}
.page-about .about-rail__nav::-webkit-scrollbar {
  display: none;
}
.page-about .about-rail__link {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 8px 12px;
  border: 1px solid var(--about-hair);
  color: var(--c-ice);
  text-decoration: none;
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  white-space: nowrap;
  transition: border-color 0.2s ease, color 0.2s ease, background-color 0.2s ease;
}
.page-about .about-rail__no {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--c-teal);
  font-weight: 700;
}
.page-about .about-rail__link:hover,
.page-about .about-rail__link:focus-visible {
  border-color: var(--c-teal);
  color: var(--c-teal);
  outline: none;
}
.page-about .about-rail__link[aria-current="true"],
.page-about .about-rail__link.is-active {
  border-color: var(--c-teal);
  background: rgba(24, 195, 177, 0.12);
  color: var(--c-teal);
}

/* 首屏框景 */
.page-about .about-hero {
  position: relative;
  border: 1px solid var(--about-hair-strong);
  padding: clamp(22px, 4vw, 52px) clamp(18px, 4vw, 56px) clamp(18px, 3vw, 36px);
  background:
    linear-gradient(155deg, rgba(43, 35, 80, 0.72), rgba(10, 26, 47, 0.96) 66%),
    var(--c-night);
  overflow: hidden;
}
.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 8px;
  border: 1px solid var(--about-hair);
  pointer-events: none;
}
.page-about .about-hero::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 5px;
  background: repeating-linear-gradient(to right, var(--c-teal) 0 1px, transparent 1px 26px);
  opacity: 0.7;
  pointer-events: none;
}
.page-about .about-hero__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(14px, 3vw, 28px);
}
.page-about .about-kicker {
  display: inline-block;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--c-teal);
}
.page-about .about-hero h1 {
  margin: 0.55rem 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.85rem, 6.6vw, 3.6rem);
  line-height: 1.08;
  letter-spacing: -0.015em;
  color: var(--c-ice);
  text-wrap: balance;
}
.page-about .about-hero__lead {
  margin: 1rem 0 0;
  max-width: 62ch;
  font-size: clamp(0.95rem, 2.2vw, 1.05rem);
  color: var(--c-mist);
}
.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 1.4rem;
}
.page-about .about-hero__note {
  display: none;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.4em;
  writing-mode: vertical-rl;
  color: var(--c-gold);
  opacity: 0.85;
  justify-self: end;
}

.page-about .about-stats {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--about-hair);
  border: 1px solid var(--about-hair);
  margin: clamp(20px, 3vw, 34px) 0 0;
  padding: 0;
}
.page-about .about-stats li {
  background: rgba(10, 26, 47, 0.86);
  padding: 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.page-about .about-stats__num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(1.5rem, 4.4vw, 2.1rem);
  line-height: 1.1;
  color: var(--c-gold);
  font-variant-numeric: tabular-nums;
}
.page-about .about-stats__num em {
  font-style: normal;
  font-size: 0.62em;
  margin-left: 2px;
}
.page-about .about-stats__cap {
  font-size: 0.76rem;
  letter-spacing: 0.1em;
  color: var(--c-mist);
}

/* 章节通用 */
.page-about .about-sec {
  margin-top: clamp(38px, 6vw, 76px);
  padding-top: clamp(22px, 3vw, 34px);
  border-top: 1px solid var(--about-hair-strong);
  scroll-margin-top: calc(var(--header-height) + 20px);
}
.page-about .about-sec h2 {
  margin: 0.4rem 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.45rem, 3.8vw, 2.35rem);
  line-height: 1.18;
  letter-spacing: -0.01em;
  color: var(--c-ice);
  text-wrap: balance;
}
.page-about .about-lead {
  margin: 0.85rem 0 0;
  max-width: 60ch;
  color: var(--c-mist);
  font-size: 0.98rem;
}
.page-about .about-sec p {
  color: rgba(245, 248, 252, 0.86);
}
.page-about .about-sec p:first-of-type {
  margin-top: 0.9rem;
}

/* 左右分栏章节 */
.page-about .about-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(18px, 3vw, 34px);
  margin-top: clamp(16px, 2.5vw, 28px);
}
.page-about .about-split__aside {
  border-left: 2px solid var(--c-teal);
  padding: 4px 0 4px clamp(14px, 2.4vw, 22px);
  background: linear-gradient(to right, rgba(24, 195, 177, 0.08), transparent 70%);
}
.page-about .about-aside__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--c-teal);
}
.page-about .about-notes {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}
.page-about .about-notes li {
  display: grid;
  grid-template-columns: 22px minmax(0, 1fr);
  gap: 8px;
  font-size: 0.88rem;
  color: var(--c-mist);
}
.page-about .about-notes__no {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--c-gold);
}

/* 版本演进 */
.page-about .about-version {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3vw, 32px);
  margin-top: clamp(18px, 3vw, 30px);
}
.page-about .about-timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}
.page-about .about-timeline__item {
  position: relative;
  padding: 16px 16px 16px 22px;
  background: var(--about-panel);
  border: 1px solid var(--about-hair);
  clip-path: polygon(14px 0, 100% 0, 100% 100%, 0 100%, 0 14px);
}
.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 14px;
  bottom: 14px;
  width: 3px;
  background: var(--c-teal);
  transform: skewY(-6deg);
}
.page-about .about-timeline__item--now::before {
  background: var(--c-gold);
}
.page-about .about-timeline__year {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: 0.08em;
  color: var(--c-gold);
  font-variant-numeric: tabular-nums;
}
.page-about .about-timeline__item h3 {
  margin: 4px 0 6px;
  font-family: var(--font-display);
  font-size: 1.02rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--c-ice);
}
.page-about .about-timeline__item p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--c-mist);
}

/* 图片容器 */
.page-about .about-figure {
  margin: 0;
  border: 1px solid var(--about-hair-strong);
  background: #071320;
  overflow: hidden;
}
.page-about .about-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 10 / 7;
  object-fit: cover;
}
.page-about .about-figure--team img {
  aspect-ratio: 3 / 2;
}
.page-about .about-figure figcaption {
  padding: 10px 14px;
  font-size: 0.78rem;
  line-height: 1.6;
  color: var(--c-mist);
  border-top: 1px solid var(--about-hair);
  background: rgba(43, 35, 80, 0.5);
}

/* 团队 */
.page-about .about-team {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(18px, 3vw, 32px);
  margin-top: clamp(16px, 2.5vw, 28px);
}
.page-about .about-metrics {
  list-style: none;
  margin: 1.1rem 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--about-hair);
  border: 1px solid var(--about-hair);
}
.page-about .about-metrics li {
  background: rgba(10, 26, 47, 0.9);
  padding: 12px 14px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.page-about .about-metrics__wide {
  grid-column: 1 / -1;
}
.page-about .about-metrics__num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.4rem;
  line-height: 1.1;
  color: var(--c-teal);
  font-variant-numeric: tabular-nums;
}
.page-about .about-metrics__cap {
  font-size: 0.76rem;
  letter-spacing: 0.06em;
  color: var(--c-mist);
}

/* 分类与节奏 */
.page-about .about-chips {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin: 1.1rem 0;
  padding: 0;
}
.page-about .about-chips li {
  padding: 5px 11px;
  border: 1px solid var(--about-hair-strong);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  color: var(--c-ice);
  background: rgba(43, 35, 80, 0.5);
}
.page-about .about-rhythm-box {
  border-left-color: var(--c-gold);
  background: linear-gradient(to right, rgba(244, 197, 66, 0.08), transparent 70%);
}
.page-about .about-rhythm-box .about-aside__title {
  color: var(--c-gold);
}
.page-about .about-rhythm {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}
.page-about .about-rhythm li {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 2px;
  padding-bottom: 10px;
  border-bottom: 1px dashed var(--about-hair);
  font-size: 0.86rem;
  color: var(--c-mist);
}
.page-about .about-rhythm li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}
.page-about .about-rhythm__when {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--c-ice);
  letter-spacing: 0.04em;
}

/* 合作生态 */
.page-about .about-partners {
  margin-top: clamp(18px, 3vw, 30px);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(18px, 3vw, 34px);
  padding: clamp(18px, 3.4vw, 36px);
  background:
    linear-gradient(148deg, var(--c-wine), #3a1023 72%);
  border: 1px solid rgba(245, 248, 252, 0.18);
}
.page-about .about-partners p {
  color: rgba(245, 248, 252, 0.9);
}
.page-about .about-honors {
  list-style: none;
  margin: 1.1rem 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: rgba(245, 248, 252, 0.18);
  border: 1px solid rgba(245, 248, 252, 0.18);
}
.page-about .about-honors li {
  background: rgba(58, 16, 35, 0.72);
  padding: 10px 14px;
  font-size: 0.85rem;
  color: var(--c-ice);
}
.page-about .about-partners__map {
  align-self: start;
}
.page-about .about-map {
  display: block;
  width: 100%;
  height: auto;
  max-width: 420px;
}
.page-about .about-map__shape {
  fill: rgba(10, 26, 47, 0.55);
  stroke: var(--c-gold);
  stroke-width: 1.6;
  stroke-linejoin: round;
}
.page-about .about-map__node circle {
  fill: var(--c-teal);
  stroke: rgba(10, 26, 47, 0.9);
  stroke-width: 2;
}
.page-about .about-map__no {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  fill: var(--c-ice);
}
.page-about .about-map__tip {
  font-family: var(--font-body);
  font-size: 10.5px;
  fill: var(--c-gold);
  opacity: 0;
  transition: opacity 0.2s ease;
}
.page-about .about-map__node:hover .about-map__tip {
  opacity: 1;
}
.page-about .about-maplist {
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
  display: grid;
  gap: 6px;
  font-size: 0.8rem;
  color: rgba(245, 248, 252, 0.86);
}
.page-about .about-maplist li {
  display: grid;
  grid-template-columns: 26px minmax(0, 1fr);
  gap: 6px;
}
.page-about .about-maplist span {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--c-gold);
}

.page-about .about-figures {
  list-style: none;
  margin: clamp(16px, 2.5vw, 26px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--about-hair);
  border: 1px solid var(--about-hair);
}
.page-about .about-figures li {
  background: rgba(43, 35, 80, 0.35);
  padding: 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.page-about .about-figures__num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(1.15rem, 3.4vw, 1.55rem);
  color: var(--c-teal);
  font-variant-numeric: tabular-nums;
  line-height: 1.15;
}
.page-about .about-figures__num em {
  font-style: normal;
  font-size: 0.62em;
  margin-left: 2px;
}
.page-about .about-figures li span:last-child {
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  color: var(--c-mist);
}

/* 联系 */
.page-about .about-service {
  margin-top: clamp(16px, 2.5vw, 26px);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(18px, 3vw, 34px);
}
.page-about .about-service__body {
  border-left: 2px solid var(--c-indigo);
  padding-left: clamp(14px, 2.4vw, 22px);
}
.page-about .about-contact {
  list-style: none;
  margin: 1.1rem 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--about-hair);
  border: 1px solid var(--about-hair);
}
.page-about .about-contact li {
  background: rgba(43, 35, 80, 0.45);
  padding: 10px 14px;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 2px;
}
.page-about .about-contact__key {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  color: var(--c-teal);
}
.page-about .about-contact__val {
  font-size: 0.92rem;
  color: var(--c-ice);
  word-break: break-word;
}
.page-about .about-service__note {
  margin: 0.85rem 0 0;
  font-size: 0.8rem;
  color: var(--c-mist);
}
.page-about .about-links {
  display: grid;
  gap: 10px;
  align-content: start;
}
.page-about .about-links__item {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  grid-template-areas:
    "no title"
    "no desc";
  column-gap: 10px;
  align-items: baseline;
  padding: 14px 16px;
  text-decoration: none;
  border: 1px solid var(--about-hair-strong);
  background: rgba(24, 195, 177, 0.05);
  clip-path: polygon(0 0, 100% 0, 100% 100%, 12px 100%, 0 calc(100% - 12px));
  transition: background-color 0.2s ease, border-color 0.2s ease;
}
.page-about .about-links__no {
  grid-area: no;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.8rem;
  color: var(--c-gold);
}
.page-about .about-links__item strong {
  grid-area: title;
  font-family: var(--font-display);
  font-size: 1rem;
  color: var(--c-ice);
  letter-spacing: 0.02em;
}
.page-about .about-links__item span:last-child {
  grid-area: desc;
  font-size: 0.8rem;
  color: var(--c-mist);
}
.page-about .about-links__item:hover,
.page-about .about-links__item:focus-visible {
  border-color: var(--c-teal);
  background: rgba(24, 195, 177, 0.14);
  outline: none;
}
.page-about .about-links__item:hover strong,
.page-about .about-links__item:focus-visible strong {
  color: var(--c-teal);
}

/* 响应式 */
@media (min-width: 640px) {
  .page-about .about-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .page-about .about-rhythm li {
    grid-template-columns: 150px minmax(0, 1fr);
    gap: 10px;
    align-items: baseline;
  }
  .page-about .about-contact li {
    grid-template-columns: 96px minmax(0, 1fr);
    gap: 12px;
    align-items: baseline;
  }
  .page-about .about-figures {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .page-about .about-metrics {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-about .about-layout {
    grid-template-columns: 208px minmax(0, 1fr);
    gap: clamp(28px, 4vw, 60px);
    align-items: start;
  }
  .page-about .about-rail {
    position: sticky;
    top: calc(var(--header-height) + 24px);
    border-top: 0;
    padding-top: 0;
  }
  .page-about .about-rail__nav {
    flex-direction: column;
    overflow: visible;
    gap: 2px;
  }
  .page-about .about-rail__link {
    border: 0;
    border-left: 2px solid var(--about-hair);
    padding: 9px 12px;
    white-space: normal;
    color: var(--c-mist);
    background: transparent;
  }
  .page-about .about-rail__link:hover,
  .page-about .about-rail__link:focus-visible {
    border-left-color: var(--c-teal);
    background: rgba(24, 195, 177, 0.08);
  }
  .page-about .about-rail__link[aria-current="true"],
  .page-about .about-rail__link.is-active {
    border-left-color: var(--c-teal);
    background: rgba(24, 195, 177, 0.1);
    color: var(--c-ice);
  }
  .page-about .about-hero__inner {
    grid-template-columns: minmax(0, 1fr) 52px;
    align-items: start;
  }
  .page-about .about-hero__note {
    display: block;
  }
  .page-about .about-split {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
  }
  .page-about .about-split--reverse {
    grid-template-columns: minmax(0, 1.45fr) minmax(0, 1fr);
  }
  .page-about .about-version {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: start;
  }
  .page-about .about-team {
    grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
    align-items: start;
  }
  .page-about .about-patrners {
    grid-template-columns: minmax(0, 1fr);
  }
  .page-about .about-partners {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    align-items: start;
  }
  .page-about .about-service {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
    align-items: start;
  }
  .page-about .about-links {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (min-width: 1180px) {
  .page-about .about-layout {
    grid-template-columns: 232px minmax(0, 1fr);
  }
  .page-about .about-hero h1 {
    max-width: 22ch;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-map__tip,
  .page-about .about-rail__link,
  .page-about .about-links__item {
    transition: none;
  }
}
<<<END>>>