.page-about {
  --about-band: clamp(52px, 8vw, 112px);
  --about-measure: 66ch;
  --about-bar: 1.72px;
  --about-soft: rgba(203, 213, 208, 0.08);
  background: var(--night);
  color: var(--silver);
  overflow-x: hidden;
}

.page-about .about-wrap {
  width: min(1180px, 100% - (var(--gutter) * 2));
  margin-inline: auto;
}

.page-about .about-wrap--crumb {
  padding-top: clamp(18px, 3vw, 34px);
}

/* ---------- 首屏 ---------- */

.page-about .about-open {
  padding-top: clamp(10px, 2vw, 22px);
}

.page-about .about-open__grid {
  display: grid;
  gap: clamp(26px, 4vw, 48px);
  margin-top: clamp(26px, 5vw, 52px);
}

.page-about .about-open__lead .h-page {
  margin: 14px 0 0;
  max-width: 20ch;
}

.page-about .about-open__lead .lede {
  margin-top: clamp(16px, 2.4vw, 24px);
  max-width: 46ch;
}

.page-about .about-open__more {
  margin-top: 16px;
  max-width: 46ch;
  color: var(--index);
  font-size: 15px;
  line-height: 1.75;
}

.page-about .about-open__facts {
  align-self: end;
}

.page-about .fact-list {
  display: grid;
  gap: 1px;
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--line);
}

.page-about .fact {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding: 13px 18px;
  background: var(--tundra);
}

.page-about .fact dt {
  color: var(--index);
  font-size: 13px;
  letter-spacing: 0.02em;
}

.page-about .fact dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--silver);
}

.page-about .fact__num {
  color: var(--cyber);
  font-size: 19px;
  letter-spacing: -0.01em;
}

.page-about .about-open__figure {
  position: relative;
  margin: clamp(30px, 5vw, 60px) 0 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--tundra);
}

.page-about .about-open__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-about .about-open__figure::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(180deg, rgba(11, 31, 23, 0.1) 0%, rgba(11, 31, 23, 0.82) 100%),
    repeating-linear-gradient(90deg, rgba(63, 224, 212, 0.09) 0 1px, transparent 1px 96px);
}

.page-about .about-open__caption {
  position: absolute;
  left: clamp(16px, 3vw, 32px);
  bottom: clamp(14px, 2.6vw, 26px);
  z-index: 2;
  margin: 0;
}

/* ---------- 出发点 ---------- */

.page-about .about-origin {
  padding: var(--about-band) 0 0;
}

.page-about .about-origin__panel {
  position: relative;
  padding: clamp(26px, 5vw, 62px);
  border-radius: var(--radius);
  background: var(--cream);
  color: var(--ink);
  box-shadow: var(--shadow-1);
}

.page-about .about-origin__panel .panel__layer {
  position: absolute;
  top: 18px;
  right: clamp(18px, 3vw, 28px);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: rgba(36, 26, 21, 0.42);
}

.page-about .index-line--ink {
  color: rgba(36, 26, 21, 0.56);
}

.page-about .h-section--ink {
  color: var(--ink);
  margin-top: 12px;
  max-width: 24ch;
}

.page-about .about-origin__quote {
  margin: clamp(24px, 4vw, 40px) 0;
  padding-left: clamp(14px, 2.4vw, 24px);
  border-left: 3px solid var(--cinnabar);
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: -0.045em;
  line-height: 1.24;
  font-size: clamp(24px, 3.6vw, 40px);
  color: var(--ink);
  max-width: 22ch;
}

.page-about .prose {
  max-width: var(--about-measure);
}

.page-about .about-origin__body p {
  margin: 0 0 14px;
  color: rgba(36, 26, 21, 0.82);
  line-height: 1.8;
}

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

/* ---------- 区块标题 ---------- */

.page-about .about-section-head {
  max-width: 62ch;
}

.page-about .about-section-head .h-section {
  margin: 12px 0 0;
  max-width: 26ch;
}

.page-about .about-section-head__lede {
  margin: 16px 0 0;
  color: var(--index);
  line-height: 1.8;
  max-width: 52ch;
}

/* ---------- 团队 ---------- */

.page-about .about-team {
  padding: var(--about-band) 0 0;
}

.page-about .about-team__figure {
  margin: clamp(26px, 4vw, 44px) 0 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--tundra);
}

.page-about .about-team__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-about .team-bars {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px 16px;
  margin: clamp(28px, 4.5vw, 48px) 0 0;
  padding: 0;
  list-style: none;
}

.page-about .team-bar {
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  gap: 7px;
  min-height: 240px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--tundra);
  transition: border-color 0.28s var(--ease), transform 0.28s var(--ease);
}

.page-about .team-bar__fill {
  display: block;
  height: calc(var(--share) * var(--about-bar));
  min-height: 44px;
  border-radius: 8px 8px 3px 3px;
  background: var(--signal);
  transition: filter 0.28s var(--ease), transform 0.28s var(--ease);
}

.page-about .team-bar--edit {
  --share: 100;
}

.page-about .team-bar--std {
  --share: 43;
}

.page-about .team-bar--std .team-bar__fill {
  background: linear-gradient(180deg, var(--cyber), rgba(63, 224, 212, 0.28));
}

.page-about .team-bar--prod {
  --share: 64;
}

.page-about .team-bar--prod .team-bar__fill {
  background: linear-gradient(180deg, rgba(203, 213, 208, 0.85), rgba(203, 213, 208, 0.22));
}

.page-about .team-bar--sup {
  --share: 50;
}

.page-about .team-bar--sup .team-bar__fill {
  background: linear-gradient(180deg, var(--cinnabar), rgba(216, 67, 42, 0.28));
}

.page-about .team-bar__num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--cyber);
}

.page-about .team-bar__name {
  margin: 0;
  font-size: 17px;
  line-height: 1.4;
  color: var(--silver);
}

.page-about .team-bar__note {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--index);
}

.page-about .about-team__foot {
  margin: clamp(24px, 3.6vw, 38px) 0 0;
  max-width: var(--about-measure);
  padding-left: clamp(12px, 2vw, 20px);
  border-left: 2px solid var(--signal);
  color: var(--index);
  font-size: 15px;
  line-height: 1.85;
}

/* ---------- 历程 ---------- */

.page-about .about-timeline {
  padding: var(--about-band) 0 0;
}

.page-about .timeline {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
  margin-top: clamp(28px, 4.5vw, 46px);
}

.page-about .timeline__figure {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--tundra);
}

.page-about .timeline__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

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

.page-about .milestone {
  border-bottom: 1px solid var(--line);
}

.page-about .milestone__head {
  position: relative;
  display: grid;
  grid-template-columns: clamp(64px, 12vw, 92px) minmax(0, 1fr) 22px;
  gap: 12px;
  align-items: baseline;
  padding: 18px 6px 18px clamp(14px, 2.6vw, 26px);
  cursor: pointer;
  list-style: none;
}

.page-about .milestone__head::-webkit-details-marker {
  display: none;
}

.page-about .milestone__head::after {
  content: "";
  width: 9px;
  height: 9px;
  border-right: 1.5px solid var(--index);
  border-bottom: 1.5px solid var(--index);
  transform: rotate(45deg) translate(-2px, -2px);
  transition: transform 0.28s var(--ease), border-color 0.28s var(--ease);
  align-self: center;
}

.page-about .milestone[open] .milestone__head::after {
  transform: rotate(225deg) translate(-2px, -2px);
  border-color: var(--cyber);
}

.page-about .milestone__head::before {
  content: "";
  position: absolute;
  left: -1px;
  top: 24px;
  width: 3px;
  height: 14px;
  background: var(--signal);
  transition: background 0.28s var(--ease), height 0.28s var(--ease);
}

.page-about .milestone[open] .milestone__head::before {
  background: var(--cyber);
  height: 26px;
}

.page-about .milestone__year {
  font-family: var(--font-mono);
  font-size: clamp(20px, 3.2vw, 28px);
  letter-spacing: -0.01em;
  color: var(--index);
  transition: color 0.28s var(--ease);
}

.page-about .milestone[open] .milestone__year {
  color: var(--cyber);
}

.page-about .milestone__title {
  font-size: clamp(15px, 2vw, 17px);
  line-height: 1.55;
  color: var(--silver);
}

.page-about .milestone__body {
  padding: 0 clamp(14px, 2.6vw, 26px) 20px;
}

.page-about .milestone__body p {
  margin: 0;
  max-width: 54ch;
  color: var(--index);
  font-size: 15px;
  line-height: 1.85;
}

/* ---------- 工作习惯 ---------- */

.page-about .about-standard {
  padding: var(--about-band) 0 0;
}

.page-about .standard-list {
  display: grid;
  gap: 14px;
  margin: clamp(26px, 4vw, 42px) 0 0;
}

.page-about .standard-item {
  padding: clamp(18px, 2.6vw, 28px);
  border: 1px solid var(--line);
  border-left: 3px solid var(--signal);
  border-radius: 4px var(--radius) var(--radius) 4px;
  background: linear-gradient(150deg, var(--tundra) 0%, rgba(18, 54, 42, 0.42) 100%);
}

.page-about .standard-item dt {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--cyber);
  margin-bottom: 10px;
}

.page-about .standard-item dd {
  margin: 0;
  max-width: 58ch;
  color: var(--silver);
  font-size: 15px;
  line-height: 1.85;
}

/* ---------- 伙伴与认可 ---------- */

.page-about .about-partners {
  padding: var(--about-band) 0 0;
}

.page-about .about-partners__grid {
  display: grid;
  gap: clamp(26px, 4vw, 44px);
  align-items: start;
}

.page-about .about-partners__text .h-section {
  margin: 12px 0 0;
  max-width: 26ch;
}

.page-about .about-partners__text p {
  margin: 18px 0 0;
  max-width: 48ch;
  color: var(--index);
  font-size: 15px;
  line-height: 1.85;
}

.page-about .honor-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .honor {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 18px 16px;
  border-radius: var(--radius);
  background: var(--cream);
  color: var(--ink);
}

.page-about .honor--wide {
  grid-column: 1 / -1;
  background: var(--tundra);
  border: 1px solid var(--line);
  border-left: 3px solid var(--cinnabar);
  color: var(--silver);
}

.page-about .honor__num {
  font-family: var(--font-mono);
  font-size: clamp(28px, 4.6vw, 40px);
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--cinnabar);
}

.page-about .honor--wide .honor__num {
  color: var(--cyber);
}

.page-about .honor__label {
  font-size: 13px;
  line-height: 1.65;
  color: rgba(36, 26, 21, 0.72);
}

.page-about .honor--wide .honor__label {
  color: var(--index);
}

/* ---------- 四个步骤 ---------- */

.page-about .about-steps {
  padding: var(--about-band) 0 var(--about-band);
}

.page-about .step-list {
  display: grid;
  gap: 14px;
  margin: clamp(26px, 4vw, 42px) 0 0;
  padding: 0;
  list-style: none;
  counter-reset: step;
}

.page-about .step {
  position: relative;
  padding: clamp(20px, 3vw, 30px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--tundra);
  transition: border-color 0.28s var(--ease), transform 0.28s var(--ease);
}

.page-about .step__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--amber);
}

.page-about .step__name {
  margin: 10px 0 0;
  font-size: 19px;
  color: var(--silver);
}

.page-about .step__note {
  margin: 10px 0 0;
  max-width: 46ch;
  color: var(--index);
  font-size: 14px;
  line-height: 1.8;
}

.page-about .about-next {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(30px, 4.5vw, 48px);
  padding-top: clamp(22px, 3.4vw, 34px);
  border-top: 1px solid var(--line);
}

/* ---------- 悬停与动效 ---------- */

@media (hover: hover) {
  .page-about .team-bar:hover {
    border-color: rgba(63, 224, 212, 0.45);
    transform: translateY(-3px);
  }

  .page-about .team-bar:hover .team-bar__fill {
    filter: brightness(1.18);
  }

  .page-about .step:hover {
    border-color: rgba(63, 224, 212, 0.4);
    transform: translateY(-2px);
  }

  .page-about .milestone__head:hover .milestone__title {
    color: var(--cyber);
  }
}

.page-about [data-reveal] {
  opacity: 1;
}

@media (prefers-reduced-motion: no-preference) {
  .page-about [data-reveal] {
    opacity: 0;
    transform: translate3d(-14px, 16px, 0);
    transition: opacity 0.34s var(--ease), transform 0.34s var(--ease);
  }

  .page-about [data-reveal][data-revealed] {
    opacity: 1;
    transform: none;
  }
}

/* ---------- 断点 ---------- */

@media (min-width: 700px) {
  .page-about .team-bars {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 16px;
  }

  .page-about .team-bar {
    min-height: 300px;
  }

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

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

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

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

  .page-about .timeline {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
  }

  .page-about .about-partners__grid.grid--7-5 {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }

  .page-about .step-list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 1180px) {
  .page-about .timeline {
    grid-template-columns: minmax(0, 3fr) minmax(0, 9fr);
  }

  .page-about .team-bar {
    min-height: 330px;
  }
}
</main>
</