.page-about {
  --hist-axis: 156px;
}

/* ---------- 首屏 ---------- */

.page-about .hist-hero {
  position: relative;
  padding-bottom: clamp(48px, 7vw, 96px);
}

.page-about .hist-hero-visual {
  position: relative;
  overflow: hidden;
}

.page-about .hist-hero-visual img {
  display: block;
  width: 100%;
  height: clamp(240px, 40vw, 520px);
  object-fit: cover;
}

.page-about .hist-hero-visual::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(5, 11, 26, 0.12) 0%, rgba(5, 11, 26, 0.5) 58%, rgba(5, 11, 26, 0.96) 100%),
    linear-gradient(90deg, rgba(5, 11, 26, 0.7) 0%, rgba(5, 11, 26, 0) 62%);
  pointer-events: none;
}

.page-about .hist-hero-copy {
  position: relative;
  z-index: 2;
  margin-top: clamp(-90px, -7vw, -42px);
}

.page-about .hist-hero-panel {
  background: var(--glass);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--line);
  padding: clamp(22px, 3.2vw, 42px);
}

.page-about .hist-hero-panel .breadcrumb {
  margin-bottom: 20px;
}

.page-about .hist-title {
  font-size: clamp(34px, 6.2vw, 76px);
  font-weight: 250;
  line-height: 1.06;
  letter-spacing: -0.02em;
  margin: 14px 0 18px;
}

.page-about .hist-lede {
  max-width: 62ch;
  margin: 0;
}

/* ---------- 时间线区 ---------- */

.page-about .hist-journey-head {
  display: grid;
  gap: clamp(24px, 3.4vw, 48px);
}

.page-about .hist-journey-head .lead {
  max-width: 58ch;
}

.page-about .hist-filter {
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-self: end;
}

.page-about .hist-filter .filter-group {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-about .hist-filter .filter-btn {
  min-width: 64px;
}

.page-about .hist-timeline {
  list-style: none;
  margin: clamp(36px, 5vw, 64px) 0 0;
  padding: 0;
}

.page-about .hist-node {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: 30px 0;
  border-top: 1px solid var(--line);
}

.page-about .hist-node-axis {
  order: -1;
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 12px;
}

.page-about .hist-dot {
  flex: 0 0 auto;
  align-self: center;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px rgba(255, 106, 26, 0.16);
}

.page-about .hist-year {
  font-family: var(--font-num);
  font-size: clamp(44px, 13vw, 68px);
  font-weight: 300;
  line-height: 0.9;
  letter-spacing: -0.02em;
  color: var(--steel);
}

.page-about .hist-era {
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--rock);
  text-transform: uppercase;
}

.page-about .hist-card {
  position: relative;
  padding: clamp(20px, 3vw, 30px);
}

.page-about .hist-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: clamp(20px, 3vw, 30px);
  bottom: clamp(20px, 3vw, 30px);
  width: 2px;
  background: var(--accent);
}

.page-about .hist-card-title {
  font-size: clamp(19px, 2.2vw, 25px);
  font-weight: 400;
  line-height: 1.34;
  margin: 0 0 12px;
}

.page-about .hist-card p {
  margin: 0;
  font-size: 16px;
  line-height: 1.85;
  color: var(--steel);
}

.page-about .hist-card--media .hist-card-media {
  margin: 0 0 20px;
  overflow: hidden;
  border: 1px solid var(--line);
}

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

.page-about .hist-note {
  padding: 16px 18px;
  border-left: 1px solid var(--line-strong);
}

.page-about .hist-note p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--rock);
}

.page-about .hist-note .index-label {
  margin-bottom: 6px;
}

/* ---------- 团队 ---------- */

.page-about .hist-team-grid {
  display: grid;
  gap: clamp(28px, 4vw, 60px);
  align-items: center;
}

.page-about .hist-team-copy .lead {
  max-width: 52ch;
}

.page-about .hist-team-note {
  margin: 20px 0 0;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  font-size: 15px;
  line-height: 1.8;
  color: var(--rock);
}

.page-about .hist-ring {
  margin: 0;
  padding: clamp(22px, 3vw, 34px);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}

.page-about .hist-ring svg {
  width: min(250px, 66vw);
  height: auto;
  display: block;
}

.page-about .hist-ring figcaption {
  width: 100%;
}

.page-about .hist-legend {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-about .hist-legend li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--steel);
}

.page-about .hist-legend i {
  flex: 0 0 auto;
  width: 10px;
  height: 10px;
}

/* ---------- 流程 ---------- */

.page-about .hist-flow-head {
  display: grid;
  gap: clamp(24px, 3.4vw, 46px);
}

.page-about .hist-flow-head .lead {
  max-width: 52ch;
}

.page-about .hist-flow-media {
  margin: 0;
}

.page-about .hist-flow-media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border: 1px solid var(--line);
}

.page-about .hist-flow-media .media-caption {
  margin: 10px 0 0;
}

.page-about .hist-steps {
  list-style: none;
  margin: clamp(32px, 4vw, 56px) 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-about .hist-step {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 8px 18px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}

.page-about .hist-step-no {
  font-size: 22px;
  font-weight: 700;
  line-height: 1.2;
  color: var(--accent);
  letter-spacing: 0.02em;
}

.page-about .hist-step h3 {
  margin: 0;
  font-size: 17px;
  font-weight: 500;
  line-height: 1.5;
  color: var(--mist);
}

.page-about .hist-step p {
  grid-column: 2;
  margin: 0;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--rock);
}

/* ---------- 行业认可 ---------- */

.page-about .hist-honor-grid {
  display: grid;
  gap: 18px;
  margin-top: clamp(26px, 3.6vw, 46px);
}

.page-about .hist-honor-item {
  padding: clamp(20px, 2.8vw, 30px);
  box-shadow: inset 0 2px 0 var(--accent);
}

.page-about .hist-honor-item h3 {
  margin: 10px 0 10px;
  font-size: 19px;
  font-weight: 400;
  line-height: 1.4;
}

.page-about .hist-honor-item p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--steel);
}

/* ---------- 版本 ---------- */

.page-about .hist-version-grid {
  display: grid;
  gap: clamp(28px, 4vw, 56px);
}

.page-about .hist-version-copy .lead {
  max-width: 46ch;
  margin-bottom: 22px;
}

.page-about .hist-versions {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-about .hist-versions li {
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
  display: grid;
  gap: 6px;
}

.page-about .hist-versions h3 {
  margin: 0;
  font-size: 17px;
  font-weight: 500;
  line-height: 1.5;
  color: var(--mist);
}

.page-about .hist-versions h3::before {
  content: "";
  display: inline-block;
  width: 16px;
  height: 2px;
  margin-right: 10px;
  vertical-align: middle;
  background: var(--accent);
}

.page-about .hist-versions p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--rock);
}

/* ---------- 结尾 ---------- */

.page-about .hist-cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(24px, 3vw, 34px);
}

.page-about .hist-cta .lead {
  max-width: 52ch;
}

/* ---------- 交互增强 ---------- */

@media (hover: hover) and (min-width: 900px) {
  .page-about .hist-note {
    transform: translateX(-14px);
    opacity: 0.72;
    transition: transform 0.34s var(--ease), opacity 0.34s var(--ease);
  }

  .page-about .hist-node:hover .hist-note,
  .page-about .hist-node:focus-within .hist-note {
    transform: translateX(0);
    opacity: 1;
  }
}

/* ---------- 平板及以上 ---------- */

@media (min-width: 760px) {
  .page-about .hist-honor-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-about .hist-step {
    grid-template-columns: 72px 200px 1fr;
    align-items: baseline;
    gap: 0 26px;
  }

  .page-about .hist-step p {
    grid-column: 3;
  }
}

@media (min-width: 880px) {
  .page-about .hist-journey-head {
    grid-template-columns: 1.5fr 1fr;
    align-items: end;
  }

  .page-about .hist-team-grid {
    grid-template-columns: 1.05fr 0.95fr;
  }

  .page-about .hist-flow-head {
    grid-template-columns: 1.35fr 1fr;
    align-items: end;
  }

  .page-about .hist-version-grid {
    grid-template-columns: 8fr 4fr;
    align-items: start;
  }
}

/* ---------- 桌面时间线 ---------- */

@media (min-width: 900px) {
  .page-about .hist-timeline {
    position: relative;
  }

  .page-about .hist-timeline::before {
    content: "";
    position: absolute;
    left: 50%;
    top: 40px;
    bottom: 40px;
    width: 1px;
    margin-left: -0.5px;
    background: linear-gradient(
      180deg,
      rgba(201, 210, 222, 0) 0%,
      rgba(201, 210, 222, 0.32) 6%,
      rgba(201, 210, 222, 0.32) 94%,
      rgba(201, 210, 222, 0) 100%
    );
  }

  .page-about .hist-node {
    display: grid;
    grid-template-columns: 1fr var(--hist-axis) 1fr;
    column-gap: clamp(18px, 2.4vw, 40px);
    row-gap: 0;
    padding: 48px 0;
    align-items: start;
  }

  .page-about .hist-node-main {
    grid-column: 1;
    grid-row: 1;
  }

  .page-about .hist-node-axis {
    grid-column: 2;
    grid-row: 1;
    order: 0;
    flex-direction: column;
    align-items: center;
    gap: 14px;
    text-align: center;
  }

  .page-about .hist-node-side {
    grid-column: 3;
    grid-row: 1;
    margin-top: 34px;
  }

  .page-about .hist-node:nth-child(even) .hist-node-main {
    grid-column: 3;
  }

  .page-about .hist-node:nth-child(even) .hist-node-side {
    grid-column: 1;
    margin-top: 34px;
  }

  .page-about .hist-year {
    font-size: clamp(52px, 5vw, 76px);
  }

  .page-about .hist-card-title {
    font-size: clamp(20px, 1.8vw, 26px);
  }
}

@media (min-width: 1100px) {
  .page-about .hist-node {
    padding: 58px 0;
  }
}
</｜｜DSML｜｜ parameter>
</invoke>
</result>