.page-about {
  background: var(--cream-050);
  color: var(--ink-950);
  overflow-x: clip;
}

/* ---------- 面包屑 ---------- */
.page-about .breadcrumbs {
  padding: 16px 0 0;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  background: var(--ink-950);
  color: var(--white);
  border-bottom: 1px solid var(--line-dark);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  inset: 8px;
  border: 1px solid rgba(191, 204, 222, 0.16);
  pointer-events: none;
}

.page-about .about-hero__inner {
  display: grid;
  gap: 36px;
  padding-top: 40px;
  padding-bottom: 36px;
}

.page-about .about-hero__text {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.page-about .about-hero h1 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(30px, 7vw, 56px);
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: var(--white);
}

.page-about .about-hero__lead {
  max-width: 46ch;
  color: rgba(255, 255, 255, 0.78);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 4px;
}

.page-about .about-hero__media {
  margin: 0;
  border: 1px solid var(--line-dark);
  background: var(--ink-900);
}

.page-about .about-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 14 / 9;
  object-fit: cover;
}

.page-about .about-facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line-dark);
}

.page-about .about-fact {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 14px 18px;
  border-right: 1px solid var(--line-dark);
  border-bottom: 1px solid var(--line-dark);
}

.page-about .about-fact .figure-num {
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--amber-500);
}

.page-about .about-fact__label {
  font-size: 13px;
  line-height: 1.5;
  color: rgba(255, 255, 255, 0.62);
}

/* ---------- 筛选入口 ---------- */
.page-about .about-index {
  padding: 32px 0 8px;
}

.page-about .about-index__inner {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.page-about .about-index__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--slate-600);
}

.page-about .about-index .filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

/* ---------- 章节流 ---------- */
.page-about .about-flow {
  display: block;
}

.page-about .about-flow [data-filter-item] {
  transition: opacity 200ms var(--ease), transform 200ms var(--ease);
}

.page-about .about-chapter {
  display: grid;
  gap: 16px;
  padding: 40px 0;
  border-top: 1px solid var(--line-cream);
}

.page-about .about-chapter__num {
  font-family: var(--font-mono);
  font-size: 44px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.05em;
  color: var(--rust-600);
}

.page-about .about-chapter__body {
  display: flex;
  flex-direction: column;
  gap: 16px;
  min-width: 0;
}

.page-about .about-chapter__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(22px, 4.2vw, 32px);
  font-weight: 700;
  line-height: 1.24;
  letter-spacing: -0.015em;
  color: var(--ink-950);
}

.page-about .about-chapter__body p {
  max-width: 62ch;
  margin: 0;
  font-size: 16px;
  line-height: 1.78;
  color: var(--ink-900);
}

.page-about .about-chapter__body a {
  color: var(--teal-700);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.page-about .about-chapter__body .num {
  font-family: var(--font-mono);
  font-size: 17px;
  font-weight: 600;
}

/* ---------- 版本时间线 ---------- */
.page-about .about-band {
  margin: 8px 0;
  padding: 40px 0 48px;
  background: var(--ink-950);
  color: var(--white);
  border-top: 1px solid var(--line-dark);
  border-bottom: 1px solid var(--line-dark);
}

.page-about .about-band__title {
  margin: 0 0 20px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--teal-500);
}

.page-about .about-band__media {
  margin: 0 0 32px;
  border: 1px solid var(--line-dark);
  background: var(--ink-900);
}

.page-about .about-band__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 7;
  object-fit: cover;
}

.page-about .tl-track {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .tl-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 18px 16px 20px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--line-dark);
  transition: background 220ms var(--ease), border-color 220ms var(--ease), transform 220ms var(--ease);
}

.page-about .tl-card:hover,
.page-about .tl-card:focus-within {
  background: rgba(20, 184, 166, 0.12);
  border-color: var(--teal-500);
  transform: translateY(-4px);
}

.page-about .tl-card__ver {
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--amber-500);
}

.page-about .tl-card__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  color: var(--white);
}

.page-about .tl-card__desc {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.76);
}

.page-about .tl-card__keys {
  margin: 0;
  padding-top: 8px;
  border-top: 1px solid var(--line-dark);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.02em;
  color: var(--teal-500);
}

/* ---------- 四类用户 ---------- */
.page-about .user-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin-top: 4px;
  background: var(--line-cream);
  border: 1px solid var(--line-cream);
}

.page-about .user-cell {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 20px 18px 22px;
  background: var(--cream-050);
}

.page-about .user-cell__tag {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--rust-600);
}

.page-about .user-cell__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  color: var(--ink-950);
}

.page-about .user-cell p {
  max-width: none;
  font-size: 15px;
  line-height: 1.72;
  color: var(--slate-600);
}

/* ---------- 团队结构 ---------- */
.page-about .team-bars {
  display: grid;
  gap: 16px;
  margin: 4px 0 8px;
  padding: 20px 18px;
  background: var(--cream-100);
  border-left: 3px solid var(--teal-500);
}

.page-about .team-bar {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.page-about .team-bar__label {
  font-size: 14px;
  color: var(--ink-900);
}

.page-about .team-bar__track {
  display: block;
  height: 20px;
  background: rgba(10, 20, 36, 0.08);
}

.page-about .team-bar__fill {
  display: block;
  height: 100%;
}

.page-about .team-bar__fill--tech {
  background: var(--teal-500);
}

.page-about .team-bar__fill--ops {
  background: var(--blue-700);
}

/* ---------- 合作生态 ---------- */
.page-about .eco-quad {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin-top: 4px;
  background: var(--line-cream);
  border: 1px solid var(--line-cream);
}

.page-about .eco-quad__cell {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 20px 18px 22px;
  background: var(--cream-050);
}

.page-about .eco-quad__dot {
  display: block;
  width: 12px;
  height: 12px;
  background: var(--teal-500);
}

.page-about .eco-quad__dot--amber {
  background: var(--amber-500);
}

.page-about .eco-quad__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  color: var(--ink-950);
}

.page-about .eco-quad__cell p {
  max-width: none;
  font-size: 15px;
  line-height: 1.72;
  color: var(--slate-600);
}

/* ---------- 安全与合规 ---------- */
.page-about .about-chapter--trust {
  background: var(--cream-100);
  border-top: 3px solid var(--blue-700);
  padding-left: 16px;
  padding-right: 16px;
}

.page-about .trust-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 24px;
}

.page-about .trust-list {
  display: grid;
  gap: 18px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .trust-list li {
  padding-left: 16px;
  border-left: 2px solid var(--blue-700);
}

.page-about .trust-list__title {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  color: var(--ink-950);
}

.page-about .trust-list p {
  max-width: 56ch;
  margin: 0;
  font-size: 15px;
  line-height: 1.74;
  color: var(--ink-900);
}

.page-about .trust-media {
  margin: 0;
  border: 1px solid var(--line-light);
}

.page-about .trust-media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

/* ---------- 后续方向 ---------- */
.page-about .about-next__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 6px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-about .about-facts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

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

  .page-about .about-chapter--trust {
    padding-left: 24px;
    padding-right: 24px;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__inner {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: center;
    gap: 56px;
    padding-top: 68px;
    padding-bottom: 60px;
  }

  .page-about .about-hero::after {
    inset: 16px;
  }

  .page-about .about-chapter {
    grid-template-columns: 132px minmax(0, 1fr);
    gap: 44px;
    padding: 72px 0;
  }

  .page-about .about-chapter__num {
    position: sticky;
    top: calc(var(--rail-h) + 32px);
    align-self: start;
    font-size: 68px;
  }

  .page-about .about-chapter--trust {
    padding-left: 32px;
    padding-right: 32px;
  }

  .page-about .about-index {
    padding-top: 48px;
  }
}

@media (min-width: 1040px) {
  .page-about .about-facts {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }

  .page-about .tl-track {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

  .page-about .trust-layout {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    gap: 40px;
    align-items: start;
  }

  .page-about .about-band {
    padding: 56px 0 64px;
  }
}
</｜｜DSML｜｜ parameter>
</invoke>
</result>