.page-about {
  --about-gap: clamp(18px, 2.6vw, 32px);
  --about-sec-pad: clamp(52px, 8vw, 104px);
  --about-cyan-line: rgba(56, 225, 198, .32);
  color: var(--bone);
}

.page-about .about-wrap {
  width: 100%;
  max-width: var(--max-w);
  margin-inline: auto;
}

/* ---------- 面包屑 ---------- */
.page-about .about-crumb {
  padding: 22px var(--pad-x) 0;
}

.page-about .about-crumb__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--rock);
}

.page-about .about-crumb__inner a {
  color: var(--rock);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

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

.page-about .about-crumb__sep {
  color: var(--line-strong);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding: clamp(34px, 5vw, 64px) var(--pad-x) 0;
}

.page-about .about-hero__grid {
  display: grid;
  gap: var(--about-gap);
}

.page-about .about-hero__slab--a {
  border-top: 6px solid var(--cyan);
  padding-top: clamp(22px, 3vw, 34px);
}

.page-about .about-hero__slab--a h1 {
  margin: 14px 0 0;
  font-family: var(--font-narrow);
  font-weight: 700;
  font-size: clamp(33px, 6vw, 60px);
  line-height: 1.08;
  letter-spacing: -.5px;
  color: var(--bone);
}

.page-about .about-hero__lede {
  margin: 20px 0 0;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--rock);
}

.page-about .about-hero__acts {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-about .about-hero__slab--b {
  background: linear-gradient(150deg, var(--moss), var(--slate-deep));
  border-left: 6px solid var(--clay);
  box-shadow: 14px 14px 0 rgba(180, 89, 60, .22);
  padding: clamp(22px, 3vw, 30px);
}

.page-about .about-hero__cap {
  margin: 0 0 18px;
  font-size: 12px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-about .about-stats {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px 18px;
}

.page-about .about-stats li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px;
  border-top: 1px solid var(--line);
  padding-top: 12px;
}

.page-about .about-stats__num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(28px, 4vw, 38px);
  line-height: 1;
  color: var(--bone);
}

.page-about .about-stats__unit {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--cyan);
}

.page-about .about-stats__label {
  flex: 1 0 100%;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--rock);
}

/* ---------- 通用章节 ---------- */
.page-about .about-sec {
  padding: var(--about-sec-pad) var(--pad-x);
}

.page-about .about-sec--moss {
  background: var(--moss);
}

.page-about .about-sec .section-band {
  margin: 0 0 clamp(26px, 4vw, 46px);
}

.page-about .about-sec__lede {
  margin: 14px 0 0;
  max-width: 66ch;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--rock);
}

/* ---------- 时间轴 ---------- */
.page-about .timeline {
  list-style: none;
  margin: 0;
  padding: 0 0 0 20px;
  border-left: 2px solid var(--about-cyan-line);
}

.page-about .timeline__node {
  position: relative;
  display: grid;
  gap: 12px;
  padding: 24px 0 26px;
  border-top: 1px solid var(--line);
}

.page-about .timeline__node::before {
  content: "";
  position: absolute;
  left: -27px;
  top: 30px;
  width: 12px;
  height: 12px;
  background: var(--clay);
  box-shadow: 0 0 0 3px var(--ink);
}

.page-about .timeline__node:first-child {
  border-top: 0;
  padding-top: 4px;
}

.page-about .timeline__node:first-child::before {
  top: 10px;
}

.page-about .timeline__year {
  display: flex;
  align-items: baseline;
  gap: 10px;
}

.page-about .timeline__idx {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 1.5px;
  color: var(--cyan);
}

.page-about .timeline__yy {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(20px, 2.6vw, 26px);
  color: var(--bone);
}

.page-about .timeline__body h3 {
  margin: 0 0 8px;
  font-family: var(--font-narrow);
  font-weight: 700;
  font-size: clamp(19px, 2.2vw, 23px);
  line-height: 1.35;
  letter-spacing: -.2px;
}

.page-about .timeline__body p {
  margin: 0;
  max-width: 60ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--rock);
}

.page-about .timeline__note {
  border-left: 4px solid var(--cyan);
  padding: 2px 0 2px 12px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--rock);
}

.page-about .timeline__noteNum {
  display: block;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 22px;
  color: var(--bone);
  margin-bottom: 2px;
}

.page-about .timeline__figure {
  padding: 8px 0 26px;
}

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

.page-about .timeline__figure .figure-caption {
  margin-top: 10px;
}

/* ---------- 团队 ---------- */
.page-about .team-layout {
  display: grid;
  gap: clamp(22px, 3.5vw, 44px);
}

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

.page-about .team-shot .figure-caption {
  margin-top: 10px;
}

.page-about .team-copy p {
  margin: 0;
  max-width: 58ch;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--bone);
}

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

.page-about .team-bar svg {
  display: block;
  width: 100%;
  max-width: 460px;
  height: auto;
}

.page-about .team-bar text {
  font-family: var(--font-mono);
  font-size: 13px;
  fill: var(--bone);
}

.page-about .team-bar .bar {
  transition: filter .24s var(--ease);
}

.page-about .team-bar .bar:hover {
  filter: brightness(1.25);
}

.page-about .team-bar .bar--a { fill: var(--cyan); }
.page-about .team-bar .bar--b { fill: var(--clay); }
.page-about .team-bar .bar--c { fill: var(--rock); }

.page-about .job-grid {
  display: grid;
  gap: 20px;
  margin-top: clamp(30px, 4.5vw, 52px);
}

.page-about .job {
  border-top: 3px solid var(--clay);
  padding: 18px 0 0;
}

.page-about .job:nth-child(2) { border-top-color: var(--cyan); }
.page-about .job:nth-child(3) { border-top-color: var(--rock); }

.page-about .job__num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 13px;
  letter-spacing: 1.5px;
  color: var(--cyan);
}

.page-about .job__title {
  margin: 8px 0 10px;
  font-family: var(--font-editorial);
  font-weight: 600;
  font-size: clamp(20px, 2.4vw, 24px);
  color: var(--bone);
}

.page-about .job p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--rock);
}

/* ---------- 资料来源 ---------- */
.page-about .source-grid {
  display: grid;
  gap: 22px;
}

.page-about .source-block {
  border: 1px solid var(--line);
  padding: 20px 20px 22px;
  background: rgba(22, 48, 43, .5);
}

.page-about .source-block__num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 26px;
  color: var(--cyan);
}

.page-about .source-block h3 {
  margin: 8px 0 10px;
  font-family: var(--font-narrow);
  font-weight: 700;
  font-size: 19px;
  color: var(--bone);
}

.page-about .source-block p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--rock);
}

.page-about .source-quote {
  border-left: 4px solid var(--cyan);
  padding: 4px 0 4px 16px;
  align-self: start;
}

.page-about .source-quote p {
  margin: 0;
  font-family: var(--font-editorial);
  font-size: 16px;
  line-height: 1.75;
  color: var(--bone);
}

.page-about .proof {
  list-style: none;
  margin: clamp(28px, 4vw, 46px) 0 0;
  padding: 0;
  display: grid;
  gap: 20px;
}

.page-about .proof li {
  border-left: 3px solid var(--about-cyan-line);
  padding-left: 16px;
}

.page-about .proof__step {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-about .proof h3 {
  margin: 8px 0 8px;
  font-family: var(--font-narrow);
  font-weight: 700;
  font-size: 19px;
  color: var(--bone);
}

.page-about .proof p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--rock);
}

.page-about .batch {
  margin-top: clamp(28px, 4vw, 46px);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  justify-content: space-between;
  border: 1px solid var(--line-strong);
  padding: 20px;
  background: var(--coal);
}

.page-about .batch__body {
  flex: 1 1 260px;
}

.page-about .batch__hint {
  margin: 0 0 8px;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--rock);
}

.page-about .batch__body p:last-child {
  margin: 0;
  font-size: 14px;
  color: var(--bone);
}

.page-about .batch__id {
  font-size: 15px;
  letter-spacing: 1px;
  color: var(--cyan);
}

.page-about .batch [data-copy][data-copied] {
  color: var(--cyan);
  border-color: var(--cyan);
}

/* ---------- 三类人 ---------- */
.page-about .aud-grid {
  display: grid;
  gap: 18px;
}

.page-about .aud {
  padding: 22px 20px 24px;
}

.page-about .aud--a {
  background: var(--slate-deep);
  border-left: 6px solid var(--cyan);
}

.page-about .aud--b {
  background: var(--moss);
  border-top: 4px solid var(--clay);
}

.page-about .aud--c {
  border: 1px solid var(--line-strong);
  background: transparent;
}

.page-about .aud__tag {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--rock);
}

.page-about .aud h3 {
  margin: 10px 0 12px;
  font-family: var(--font-narrow);
  font-weight: 700;
  font-size: clamp(19px, 2.3vw, 23px);
  line-height: 1.35;
  color: var(--bone);
}

.page-about .aud p {
  margin: 0 0 12px;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--rock);
}

.page-about .aud__link {
  margin: 0;
}

.page-about .aud__link a {
  font-size: 13.5px;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--about-cyan-line);
}

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

/* ---------- 行业认可 ---------- */
.page-about .recognition {
  position: relative;
  overflow: hidden;
  background: var(--coal);
  padding: var(--about-sec-pad) var(--pad-x);
}

.page-about .recognition__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .28;
}

.page-about .recognition__inner {
  position: relative;
  max-width: var(--max-w);
  margin-inline: auto;
}

.page-about .recognition .section-band {
  margin: 0 0 clamp(26px, 4vw, 44px);
}

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

.page-about .recognition__item {
  display: grid;
  gap: 6px;
  border-top: 1px solid var(--line);
  padding: 18px 0;
}

.page-about .recognition__year {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 15px;
  letter-spacing: 1px;
  color: var(--cyan);
}

.page-about .recognition__item p {
  margin: 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--bone);
}

.page-about .about-close {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(30px, 4vw, 48px);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-about .source-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .source-quote {
    grid-column: 1 / -1;
  }

  .page-about .proof {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 26px;
  }

  .page-about .recognition__item {
    grid-template-columns: 132px minmax(0, 1fr);
    align-items: baseline;
    gap: 20px;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: 1.15fr .85fr;
    align-items: start;
  }

  .page-about .about-hero__slab--b {
    clip-path: polygon(7% 0, 100% 0, 100% 100%, 0 100%);
    padding-left: 14%;
    padding-top: clamp(30px, 3.4vw, 42px);
  }

  .page-about .timeline__node {
    grid-template-columns: 132px minmax(0, 1fr) 208px;
    gap: clamp(22px, 3vw, 38px);
    align-items: start;
    padding: 26px 0 28px;
  }

  .page-about .timeline__year {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
  }

  .page-about .team-layout {
    grid-template-columns: 1.05fr 1fr;
    align-items: start;
  }

  .page-about .job-grid {
    grid-template-columns: 1.6fr 1.1fr .85fr;
    gap: clamp(20px, 3vw, 34px);
  }

  .page-about .aud-grid {
    grid-template-columns: 1.25fr 1fr .9fr;
    gap: 0;
  }

  .page-about .aud--a,
  .page-about .aud--b {
    margin-right: 18px;
  }
}

@media (min-width: 1140px) {
  .page-about .about-hero__grid {
    gap: 34px;
  }

  .page-about .timeline {
    padding-left: 26px;
  }

  .page-about .timeline__node::before {
    left: -33px;
  }
}

@media (max-width: 420px) {
  .page-about .about-stats {
    grid-template-columns: minmax(0, 1fr);
  }
}