.page-about {
  background: var(--ink);
  color: var(--mist);
  overflow-x: clip;
}

.page-about a:focus-visible,
.page-about button:focus-visible {
  outline: 2px solid var(--acid);
  outline-offset: 2px;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: clamp(24px, 4vw, 44px) 0 clamp(40px, 6vw, 72px);
  border-bottom: 1px solid var(--line-soft);
  overflow: hidden;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(
    98deg,
    transparent 0 47px,
    var(--line) 47px 48px
  );
  opacity: 0.55;
  pointer-events: none;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(120% 90% at 12% 0%, rgba(8, 10, 11, 0) 30%, var(--ink) 100%);
  pointer-events: none;
}

.page-about .about-hero > .shell {
  position: relative;
  z-index: 1;
}

.page-about .about-crumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--steel);
  margin-bottom: clamp(20px, 3vw, 34px);
}

.page-about .about-crumb a {
  color: var(--steel);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.25s var(--ease), border-color 0.25s var(--ease);
}

.page-about .about-crumb a:hover {
  color: var(--acid);
  border-bottom-color: var(--acid);
}

.page-about .about-crumb__now {
  color: var(--mist);
}

.page-about .about-kicker {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--acid);
}

.page-about .about-hero__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(34px, 7.2vw, 82px);
  line-height: 1;
  letter-spacing: -0.02em;
  max-width: 18ch;
}

.page-about .about-hero__grid {
  display: grid;
  gap: clamp(20px, 3vw, 40px);
  margin-top: clamp(22px, 3.5vw, 38px);
}

.page-about .about-hero__lead {
  margin: 0;
  font-size: clamp(16px, 1.8vw, 18px);
  line-height: 1.9;
  color: rgba(244, 247, 241, 0.86);
  max-width: 62ch;
}

.page-about .about-quote {
  margin: 0;
  padding-left: 18px;
  border-left: 2px solid var(--acid);
}

.page-about .about-quote p {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(16px, 2vw, 20px);
  line-height: 1.78;
  color: var(--mist);
}

.page-about .about-hero__facts {
  list-style: none;
  margin: clamp(28px, 4vw, 46px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
}

.page-about .about-hero__facts > li {
  background: var(--ink);
  padding: 14px 12px 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-about .about-hero__num {
  font-family: var(--font-mono);
  font-size: clamp(22px, 2.6vw, 34px);
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--acid);
  line-height: 1.1;
}

.page-about .about-hero__lbl {
  font-size: 13px;
  line-height: 1.6;
  color: var(--steel);
}

/* ---------- 布局 ---------- */
.page-about .about-layout {
  display: grid;
  gap: clamp(24px, 4vw, 46px);
  padding-block: clamp(32px, 5vw, 64px) clamp(56px, 8vw, 104px);
}

/* ---------- 侧边档案目录 ---------- */
.page-about .about-anchors {
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line-soft);
}

.page-about .about-anchors__title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--steel);
}

.page-about .about-anchors__list {
  list-style: none;
  margin: 0;
  padding: 0 0 4px;
  display: flex;
  gap: 18px;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-about .about-anchors__list::-webkit-scrollbar {
  display: none;
}

.page-about .about-anchors__list > li {
  flex: 0 0 auto;
}

.page-about .about-anchors__link {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--steel);
  text-decoration: none;
  padding-bottom: 6px;
  border-bottom: 2px solid transparent;
  white-space: nowrap;
  transition: color 0.25s var(--ease), border-color 0.25s var(--ease);
}

.page-about .about-anchors__link:hover {
  color: var(--mist);
}

.page-about .about-anchors__link.is-active {
  color: var(--acid);
  border-bottom-color: var(--acid);
}

/* ---------- 章节通用 ---------- */
.page-about .about-sec {
  margin-bottom: clamp(52px, 8vw, 92px);
  scroll-margin-top: 96px;
}

.page-about .about-sec--last {
  margin-bottom: 0;
}

.page-about .about-head {
  border-top: 1px solid var(--line);
  padding-top: 14px;
  margin-bottom: clamp(20px, 3vw, 30px);
}

.page-about .about-head__idx {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--acid);
  margin-bottom: 8px;
}

.page-about .about-head__idx--dark {
  color: #3f6b00;
}

.page-about .about-head__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(24px, 3.4vw, 42px);
  line-height: 1.12;
  letter-spacing: -0.015em;
}

.page-about .about-head__title--dark {
  color: var(--ink);
}

.page-about .about-head__note {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--steel);
}

.page-about .about-copy p {
  margin: 0 0 1.15em;
  font-size: clamp(16px, 1.7vw, 18px);
  line-height: 1.9;
  color: rgba(244, 247, 241, 0.86);
}

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

.page-about .about-figure {
  margin: 0 0 clamp(22px, 3vw, 32px);
}

.page-about .about-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 14 / 9;
  object-fit: cover;
  border: 1px solid var(--line-soft);
  background: var(--panel);
}

.page-about .about-figure figcaption {
  padding-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.03em;
  color: var(--steel);
}

.page-about .about-figure--info img {
  aspect-ratio: 3 / 2;
}

.page-about .about-quote--inset {
  margin: clamp(24px, 4vw, 40px) 0 0;
  border-left-width: 3px;
  max-width: 46ch;
}

.page-about .about-quote--inset p {
  font-size: clamp(18px, 2.3vw, 25px);
  line-height: 1.7;
}

/* ---------- 版本时间线 ---------- */
.page-about .tl {
  list-style: none;
  margin: 0 0 clamp(26px, 4vw, 40px);
  padding: 0;
}

.page-about .tl__item {
  position: relative;
  padding: 0 0 clamp(22px, 3vw, 32px) 26px;
  border-left: 1px solid var(--line-soft);
}

.page-about .tl__item::before {
  content: "";
  position: absolute;
  left: -4px;
  top: 7px;
  width: 7px;
  height: 7px;
  background: var(--acid);
  box-shadow: 0 0 0 4px rgba(183, 255, 42, 0.12);
}

.page-about .tl__item--now::before {
  background: var(--track);
  box-shadow: 0 0 0 4px rgba(255, 90, 31, 0.16);
}

.page-about .tl__ver {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--blue);
  margin-bottom: 4px;
}

.page-about .tl__name {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(19px, 2.2vw, 26px);
  line-height: 1.25;
  letter-spacing: -0.01em;
}

.page-about .tl__text {
  margin: 0;
  font-size: 16px;
  line-height: 1.85;
  color: rgba(244, 247, 241, 0.82);
}

.page-about .tl__more {
  margin: 0;
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  font-size: 15px;
  line-height: 1.8;
  color: var(--steel);
  transition: max-height 0.35s var(--ease), opacity 0.3s var(--ease), margin 0.3s var(--ease);
}

.page-about .tl__item:hover .tl__more,
.page-about .tl__item:focus-within .tl__more {
  max-height: 180px;
  opacity: 1;
  margin-top: 10px;
}

.page-about .tl__link {
  display: inline-block;
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--acid);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  padding-bottom: 2px;
  transition: border-color 0.25s var(--ease);
}

.page-about .tl__link:hover {
  border-bottom-color: var(--acid);
}

/* ---------- 亮面插页 ---------- */
.page-about .about-slab {
  position: relative;
  background: var(--mist);
  color: var(--ink);
  padding: clamp(22px, 3.5vw, 44px);
  margin-bottom: clamp(52px, 8vw, 92px);
  box-shadow: 0 34px 64px -34px rgba(0, 0, 0, 0.85);
  scroll-margin-top: 96px;
}

.page-about .about-slab::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: min(46%, 320px);
  height: 4px;
  background: linear-gradient(90deg, var(--acid), var(--blue));
}

.page-about .about-slab__head {
  margin-bottom: clamp(18px, 2.5vw, 26px);
}

.page-about .about-slab__note {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: rgba(8, 10, 11, 0.66);
  max-width: 52ch;
}

.page-about .about-teamgrid {
  display: grid;
  gap: clamp(20px, 3vw, 32px);
}

.page-about .team {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .team__row {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  padding: 13px 0;
  border-top: 1px solid rgba(8, 10, 11, 0.14);
}

.page-about .team__row:last-child {
  border-bottom: 1px solid rgba(8, 10, 11, 0.14);
}

.page-about .team__num {
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 600;
  line-height: 1.2;
  color: var(--ink);
  letter-spacing: 0.01em;
}

.page-about .team__name {
  margin: 0 0 4px;
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
}

.page-about .team__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: rgba(8, 10, 11, 0.68);
}

.page-about .about-figure--team {
  margin: 0;
}

.page-about .about-figure--team img {
  aspect-ratio: 4 / 3;
  border-color: rgba(8, 10, 11, 0.16);
  background: rgba(8, 10, 11, 0.08);
}

.page-about .about-figure--team figcaption {
  color: rgba(8, 10, 11, 0.6);
}

.page-about .about-scale {
  margin-top: clamp(24px, 3.5vw, 36px);
  scroll-margin-top: 96px;
}

.page-about .about-slab__sub {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: #3f6b00;
  font-weight: 500;
}

.page-about .scale {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: rgba(8, 10, 11, 0.14);
  border: 1px solid rgba(8, 10, 11, 0.14);
}

.page-about .scale__cell {
  background: var(--mist);
  padding: 14px 12px 16px;
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.page-about .scale__num {
  font-family: var(--font-mono);
  font-size: clamp(20px, 2.6vw, 32px);
  font-weight: 500;
  line-height: 1.1;
  letter-spacing: 0.01em;
  color: var(--ink);
}

.page-about .scale__num--hot {
  color: var(--track);
}

.page-about .scale__lbl {
  font-size: 12.5px;
  line-height: 1.6;
  color: rgba(8, 10, 11, 0.66);
}

/* ---------- 合作生态 ---------- */
.page-about .partner-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
}

.page-about .partner {
  background: var(--ink);
  padding: 18px 16px 20px;
  transition: background 0.25s var(--ease);
}

.page-about .partner:hover {
  background: var(--panel);
}

.page-about .partner__k {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--acid);
}

.page-about .partner__t {
  margin: 6px 0 6px;
  font-size: 17px;
  font-weight: 600;
}

.page-about .partner__d {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(244, 247, 241, 0.74);
}

.page-about .honor {
  margin-top: clamp(22px, 3vw, 30px);
  padding-left: 16px;
  border-left: 2px solid var(--blue);
}

.page-about .honor p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.85;
  color: rgba(244, 247, 241, 0.82);
}

.page-about .honor__link {
  margin-top: 8px;
}

.page-about .honor__link a {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--acid);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  padding-bottom: 2px;
}

.page-about .honor__link a:hover {
  border-bottom-color: var(--acid);
}

/* ---------- 服务原则 ---------- */
.page-about .service-list {
  list-style: none;
  margin: 0;
  padding: 0;
  max-width: 640px;
}

.page-about .service-row {
  padding: 16px 0;
  border-top: 1px solid var(--line-soft);
}

.page-about .service-row__k {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--steel);
}

.page-about .service-row__v {
  margin: 0;
  font-size: 16px;
  line-height: 1.85;
  color: rgba(244, 247, 241, 0.86);
}

.page-about .about-copy {
  margin-top: 10px;
  padding: 8px 12px;
  background: transparent;
  border: 1px solid var(--line);
  color: var(--acid);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  cursor: pointer;
  transition: background 0.25s var(--ease), border-color 0.25s var(--ease);
}

.page-about .about-copy:hover {
  background: var(--acid-veil);
  border-color: var(--acid);
}

.page-about .about-copy.is-copied {
  border-color: var(--teal);
  color: var(--teal);
}

.page-about .about-copy__status {
  display: inline-block;
  margin-left: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--teal);
}

.page-about .about-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(24px, 3.5vw, 34px);
  padding-top: 20px;
  border-top: 1px solid var(--line);
}

.page-about .about-cta .btn {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.05em;
}

/* ---------- 媒体查询 ---------- */
@media (min-width: 640px) {
  .page-about .about-hero__facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .scale {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .partner-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
  }

  .page-about .about-layout {
    grid-template-columns: 178px minmax(0, 1fr);
    align-items: start;
  }

  .page-about .about-anchors {
    position: sticky;
    top: 118px;
    padding-bottom: 0;
    border-bottom: 0;
    border-left: 1px solid var(--line-soft);
    padding-left: 14px;
  }

  .page-about .about-anchors__list {
    flex-direction: column;
    gap: 10px;
    overflow: visible;
  }

  .page-about .about-anchors__link {
    border-bottom: 0;
    border-left: 2px solid transparent;
    padding: 0 0 0 10px;
  }

  .page-about .about-anchors__link.is-active {
    border-left-color: var(--acid);
    border-bottom-color: transparent;
  }

  .page-about .about-teamgrid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 300px);
    align-items: start;
  }

  .page-about .about-figure--team {
    margin-top: 4px;
  }
}

@media (min-width: 1080px) {
  .page-about .tl {
    padding-left: 6px;
  }

  .page-about .about-figure img {
    max-height: 520px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .tl__more,
  .page-about .about-copy,
  .page-about .partner,
  .page-about .about-anchors__link,
  .page-about .about-crumb a {
    transition: none;
  }
}
<<<END>>>