.page-about {
  --about-gap: clamp(20px, 4vw, 40px);
  --about-line: rgba(200, 162, 74, .38);
  background: var(--paper);
  color: var(--ink-900);
}

.page-about .about-p {
  margin: 14px 0 0;
  font-size: 16px;
  line-height: 1.85;
  color: var(--ink-soft);
  max-width: 44ch;
}

.page-about .about-crumb {
  padding-top: 18px;
  padding-bottom: 14px;
}

/* ---------- Hero ---------- */
.page-about .about-hero {
  background-color: var(--ink-900);
  background-image:
    radial-gradient(circle at 88% 10%, rgba(200, 162, 74, .18), transparent 55%),
    repeating-linear-gradient(90deg, rgba(200, 162, 74, .13) 0 1px, transparent 1px 92px);
  color: var(--paper-0);
  padding: clamp(26px, 5vw, 56px) 0 clamp(34px, 5vw, 64px);
  border-top: var(--bw) solid var(--ink-900);
  border-bottom: var(--bw) solid var(--ink-900);
  overflow: hidden;
}

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

.page-about .about-hero__rail {
  border-left: var(--bw) solid var(--gold);
  padding-left: 14px;
}

.page-about .about-hero__code {
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--gold);
  margin: 0 0 10px;
}

.page-about .about-hero__rail-title {
  margin: 0 0 12px;
  font-size: 13px;
  letter-spacing: .08em;
  color: rgba(251, 248, 240, .68);
}

.page-about .about-anchors {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-about .about-anchors li {
  min-width: 0;
}

.page-about .about-anchors a {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 7px 11px;
  border: 1px solid rgba(201, 194, 180, .35);
  color: var(--paper-hi);
  text-decoration: none;
  font-size: 14px;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-about .about-anchors a .mono {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--gold);
}

.page-about .about-anchors a:hover,
.page-about .about-anchors a:focus-visible {
  color: var(--paper-0);
  border-color: var(--gold);
  background-color: rgba(200, 162, 74, .14);
}

.page-about .about-anchors a:focus-visible {
  outline: 2px solid var(--red);
  outline-offset: 2px;
}

.page-about .about-hero h1 {
  margin: 14px 0 0;
  font-size: clamp(28px, 4.4vw, 46px);
  line-height: 1.18;
  font-weight: 900;
  letter-spacing: .01em;
  max-width: 20ch;
}

.page-about .about-hero__lede {
  margin: 18px 0 0;
  max-width: 46ch;
  font-size: 16px;
  line-height: 1.85;
  color: rgba(251, 248, 240, .84);
}

.page-about .about-hero__stats {
  margin-top: clamp(24px, 4vw, 36px);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid var(--about-line);
}

.page-about .about-stat {
  padding: 14px 12px 0;
  border-left: 1px solid rgba(200, 162, 74, .22);
  min-width: 0;
}

.page-about .about-stat:nth-child(odd) {
  border-left: 0;
  padding-left: 0;
}

.page-about .about-stat__num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(22px, 3vw, 30px);
  line-height: 1.2;
  color: var(--gold);
  letter-spacing: .02em;
}

.page-about .about-stat__label {
  margin: 6px 0 0;
  font-size: 13px;
  color: rgba(251, 248, 240, .7);
}

/* ---------- 起点与定位 ---------- */
.page-about .about-origin__split {
  align-items: start;
}

.page-about .about-aside {
  border: var(--bw) solid var(--ink-900);
  background: var(--paper-0);
  box-shadow: var(--shadow-hard-sm);
  padding: 18px 20px 20px;
}

.page-about .about-aside__label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--gold-deep);
}

.page-about .about-aside__title {
  margin: 8px 0 14px;
  font-size: 20px;
  font-weight: 800;
  line-height: 1.35;
}

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

.page-about .about-roles li {
  position: relative;
  padding: 9px 0 9px 20px;
  font-size: 15px;
  border-bottom: 1px solid var(--fog);
}

.page-about .about-roles li:last-child {
  border-bottom: 0;
}

.page-about .about-roles li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 16px;
  width: 8px;
  height: 8px;
  background: var(--gold);
}

.page-about .about-aside__foot {
  margin: 14px 0 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--ink-soft);
}

.page-about .about-figure {
  margin: var(--about-gap) 0 0;
}

.page-about .figure__frame {
  overflow: hidden;
  border: var(--bw) solid var(--ink-900);
  background: var(--paper-0);
}

.page-about .figure__img {
  display: block;
  width: 100%;
  object-fit: cover;
}

.page-about .figure__cap {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.7;
  color: var(--ink-soft);
}

/* ---------- 发展历程 ---------- */
.page-about .about-history {
  background: var(--paper-0);
  border-top: 1px solid var(--fog);
  border-bottom: 1px solid var(--fog);
}

.page-about .about-history__intro {
  align-items: end;
}

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

.page-about .tl {
  list-style: none;
  margin: clamp(24px, 4vw, 40px) 0 0;
  padding: 0;
  border-top: var(--bw) solid var(--ink-900);
}

.page-about .tl__item {
  display: grid;
  gap: 6px;
  padding: 18px 0;
  border-bottom: 1px solid var(--fog);
  transition: background-color var(--dur) var(--ease);
}

.page-about .tl__item:hover {
  background-color: var(--paper-hi);
}

.page-about .tl__item:focus-visible {
  outline: 2px solid var(--red);
  outline-offset: 2px;
  background-color: var(--paper-hi);
}

.page-about .tl__year {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(22px, 2.6vw, 30px);
  line-height: 1.1;
  color: var(--gold-deep);
  letter-spacing: .04em;
}

.page-about .tl__title {
  margin: 0;
  font-size: 19px;
  font-weight: 800;
  line-height: 1.4;
}

.page-about .tl__text {
  margin: 8px 0 10px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-soft);
  max-width: 52ch;
}

/* ---------- 团队 ---------- */
.page-about .about-team__top {
  align-items: start;
}

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

.page-about .team-band {
  margin: clamp(24px, 4vw, 36px) 0 0;
  display: grid;
  border: var(--bw) solid var(--ink-900);
  background: var(--paper-0);
  box-shadow: var(--shadow-hard);
}

.page-about .team-band__cell {
  padding: 20px 20px 22px;
  border-bottom: var(--bw) solid var(--ink-900);
}

.page-about .team-band__cell:last-child {
  border-bottom: 0;
}

.page-about .team-band__num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(30px, 4vw, 40px);
  line-height: 1;
  color: var(--gold-deep);
}

.page-about .team-band__title {
  margin: 10px 0 8px;
  font-size: 20px;
  font-weight: 800;
}

.page-about .team-band__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.page-about .about-contact-line {
  margin: 20px 0 0;
  font-size: 14px;
  line-height: 1.9;
  color: var(--ink-soft);
}

.page-about .about-inline-link {
  color: var(--ink-900);
  text-decoration: none;
  border-bottom: 2px solid var(--gold);
}

.page-about .about-inline-link:hover,
.page-about .about-inline-link:focus-visible {
  color: var(--red);
  border-bottom-color: var(--red);
}

.page-about .about-inline-link:focus-visible {
  outline: 2px solid var(--red);
  outline-offset: 2px;
}

/* ---------- 合作生态 ---------- */
.page-about .about-partners {
  background: var(--ink-800);
  color: var(--paper-0);
  border-top: var(--bw) solid var(--ink-900);
  border-bottom: var(--bw) solid var(--ink-900);
}

.page-about .about-eyebrow--light,
.page-about .about-partners .eyebrow {
  color: var(--gold);
}

.page-about .about-title--light {
  color: var(--paper-0);
  margin-top: 10px;
}

.page-about .about-lede--light {
  color: rgba(251, 248, 240, .8);
  max-width: 56ch;
  margin-top: 12px;
}

.page-about .partner-grid {
  margin-top: clamp(24px, 4vw, 36px);
  display: grid;
  gap: 0;
  border-top: 1px solid var(--about-line);
  border-left: 1px solid var(--about-line);
}

.page-about .partner-cell {
  padding: 18px 18px 20px;
  border-right: 1px solid var(--about-line);
  border-bottom: 1px solid var(--about-line);
}

.page-about .partner-cell__code {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--gold);
}

.page-about .partner-cell__title {
  margin: 10px 0 8px;
  font-size: 18px;
  font-weight: 800;
  color: var(--paper-0);
}

.page-about .partner-cell__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(251, 248, 240, .76);
}

.page-about .partner-steps {
  margin-top: clamp(24px, 4vw, 36px);
  display: grid;
  gap: 18px;
}

.page-about .partner-step {
  border-top: var(--bw) solid var(--gold);
  padding-top: 12px;
}

.page-about .partner-step__num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--gold);
  letter-spacing: .14em;
}

.page-about .partner-step__title {
  margin: 8px 0 6px;
  font-size: 17px;
  font-weight: 800;
  color: var(--paper-0);
}

.page-about .partner-step__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(251, 248, 240, .74);
}

/* ---------- 资质与运营 ---------- */
.page-about .honor-grid {
  margin-top: clamp(24px, 4vw, 36px);
  display: grid;
  gap: 18px;
}

.page-about .honor-card {
  border: var(--bw) solid var(--ink-900);
  background: var(--paper-0);
  box-shadow: var(--shadow-hard-sm);
  padding: 18px 18px 20px;
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-about .honor-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-hard);
}

.page-about .honor-card__num {
  margin: 12px 0 6px;
  font-family: var(--font-mono);
  font-size: clamp(24px, 3.4vw, 32px);
  line-height: 1.1;
  color: var(--ink-900);
}

.page-about .honor-card__title {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 800;
  line-height: 1.5;
}

.page-about .honor-card__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.page-about .about-links {
  margin-top: clamp(24px, 4vw, 36px);
  display: grid;
  gap: 12px;
}

.page-about .about-link-card {
  display: block;
  padding: 14px 16px;
  border: 1px solid var(--ink-900);
  border-left: 6px solid var(--gold);
  background: var(--paper-0);
  text-decoration: none;
  color: var(--ink-900);
  transition: background-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-about .about-link-card:hover,
.page-about .about-link-card:focus-visible {
  background: var(--paper-hi);
  transform: translateY(-2px);
}

.page-about .about-link-card:focus-visible {
  outline: 2px solid var(--red);
  outline-offset: 2px;
}

.page-about .about-link-card__label {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--gold-deep);
}

.page-about .about-link-card__title {
  display: block;
  margin-top: 6px;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.5;
}

/* ---------- 页尾行动区 ---------- */
.page-about .about-cta {
  background-color: var(--ink-900);
  background-image: repeating-linear-gradient(135deg, rgba(200, 162, 74, .1) 0 1px, transparent 1px 18px);
  color: var(--paper-0);
  border-top: var(--bw) solid var(--ink-900);
  padding: clamp(30px, 5vw, 56px) 0;
}

.page-about .about-cta__inner {
  display: grid;
  gap: 22px;
}

.page-about .about-cta__title {
  margin: 0;
  font-size: clamp(24px, 3.4vw, 34px);
  font-weight: 900;
  line-height: 1.3;
  color: var(--paper-0);
}

.page-about .about-cta__text {
  margin: 12px 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(251, 248, 240, .8);
  max-width: 48ch;
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-about .about-cta__actions .btn {
  text-decoration: none;
}

.page-about .about-cta__actions .btn:focus-visible {
  outline: 2px solid var(--paper-0);
  outline-offset: 3px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 768px) {
  .page-about .about-hero__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .about-stat:nth-child(odd) {
    border-left: 1px solid rgba(200, 162, 74, .22);
    padding-left: 12px;
  }

  .page-about .about-stat:first-child {
    border-left: 0;
    padding-left: 0;
  }

  .page-about .tl__item {
    grid-template-columns: 130px minmax(0, 1fr);
    gap: 26px;
    padding: 22px 12px 22px 0;
  }

  .page-about .tl__year {
    padding-top: 2px;
    border-right: 1px solid var(--fog);
  }

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

  .page-about .team-band__cell {
    border-bottom: 0;
    border-right: var(--bw) solid var(--ink-900);
  }

  .page-about .team-band__cell:last-child {
    border-right: 0;
  }

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

  .page-about .partner-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 24px;
  }

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

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

  .page-about .about-cta__inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: center;
    gap: 32px;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: 190px minmax(0, 1fr);
    align-items: start;
    gap: 48px;
  }

  .page-about .about-anchors {
    display: block;
  }

  .page-about .about-anchors li + li {
    margin-top: 6px;
  }

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

  .page-about .about-origin__split,
  .page-about .about-team__top,
  .page-about .about-history__intro {
    gap: clamp(28px, 3.4vw, 44px);
  }

  .page-about .about-aside {
    margin-top: 6px;
  }

  .page-about .tl {
    margin-top: 44px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-anchors a,
  .page-about .tl__item,
  .page-about .honor-card,
  .page-about .about-link-card {
    transition: none;
  }

  .page-about .honor-card:hover,
  .page-about .about-link-card:hover {
    transform: none;
  }
}