.page-about {
  --about-pad: clamp(56px, 9vw, 128px);
  --about-rule: 4px;
  background: var(--paper-50);
  color: var(--graphite-700);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.78;
  overflow-x: hidden;
}

.page-about p {
  margin: 0;
}

.page-about .eyebrow {
  font-family: var(--font-num);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.18em;
  color: var(--amber-500);
  margin: 0;
}

.page-about .prose {
  max-width: 34em;
}

.page-about .prose p + p {
  margin-top: 1.1em;
}

.page-about .prose a {
  color: var(--ink-950);
  text-decoration: underline;
  text-decoration-color: var(--cyan-400);
  text-decoration-thickness: 3px;
  text-underline-offset: 4px;
}

/* ---------- hero ---------- */

.page-about .about-hero {
  position: relative;
  padding-top: clamp(22px, 4vw, 40px);
  background: var(--paper-50);
}

.page-about .about-hero .crumbs {
  margin: 0 0 clamp(24px, 4vw, 44px);
}

.page-about .about-hero__top {
  display: grid;
  gap: 18px;
  padding-bottom: clamp(30px, 5vw, 56px);
}

.page-about .about-hero__index {
  color: var(--graphite-700);
  opacity: 0.62;
}

.page-about .about-hero__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(38px, 8.4vw, 104px);
  line-height: 1.0;
  letter-spacing: -0.035em;
  color: var(--ink-950);
  text-wrap: balance;
}

.page-about .about-hero__lede {
  margin-top: clamp(18px, 3vw, 30px);
  max-width: 34em;
  font-size: clamp(16px, 1.1vw, 18px);
  line-height: 1.8;
  color: var(--graphite-700);
}

.page-about .about-hero__media {
  margin: 0;
  border-top: var(--about-rule) solid var(--ink-950);
  border-bottom: var(--about-rule) solid var(--ink-950);
  background: var(--indigo-900);
  overflow: hidden;
}

.page-about .about-hero__media img,
.page-about .about-timeline__media img,
.page-about .about-team__media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}

.page-about .media-caption {
  padding: 10px 20px;
  font-family: var(--font-num);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--cyan-100);
  background: var(--ink-950);
}

/* ---------- shared heading ---------- */

.page-about .about-head {
  max-width: 34em;
  margin-bottom: clamp(28px, 4.5vw, 52px);
}

.page-about .about-head__title {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(28px, 4.8vw, 56px);
  line-height: 1.08;
  letter-spacing: -0.028em;
  color: var(--ink-950);
}

.page-about .about-head__note {
  margin-top: 14px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--graphite-700);
}

/* ---------- 我们怎么看数据 ---------- */

.page-about .about-view {
  padding: var(--about-pad) 0;
  background: var(--paper-50);
}

.page-about .about-view__grid {
  display: grid;
  gap: 34px;
}

.page-about .about-view__side {
  display: grid;
  gap: 18px;
  align-content: start;
}

.page-about .about-view__card {
  border: 3px solid var(--ink-950);
  background: var(--paper-50);
  box-shadow: 9px 9px 0 var(--paper-300);
  padding: 22px 22px 24px;
}

.page-about .about-view__card p {
  margin-top: 10px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--graphite-700);
}

.page-about .about-tag {
  display: inline-block;
  font-family: var(--font-num);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--ink-950);
  padding-left: 10px;
  border-left: 4px solid var(--cyan-400);
}

.page-about .about-pull {
  margin-top: clamp(38px, 6vw, 70px);
  padding-top: clamp(20px, 3vw, 34px);
  border-top: var(--about-rule) solid var(--ink-950);
  max-width: 20em;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(26px, 4.4vw, 52px);
  line-height: 1.14;
  letter-spacing: -0.03em;
  color: var(--ink-950);
}

/* ---------- 时间线 ---------- */

.page-about .about-timeline {
  padding: var(--about-pad) 0 0;
  background: var(--paper-50);
  border-top: var(--about-rule) solid var(--ink-950);
}

.page-about .about-rail {
  position: relative;
  margin: 0;
  padding: 0 0 0 34px;
  list-style: none;
  display: grid;
  gap: 44px;
}

.page-about .about-rail::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 8px;
  bottom: 8px;
  width: var(--about-rule);
  background: var(--ink-950);
}

.page-about .about-node {
  position: relative;
}

.page-about .about-node__dot {
  position: absolute;
  left: -34px;
  top: 4px;
  width: 20px;
  height: 20px;
  background: var(--cyan-400);
  border: 3px solid var(--ink-950);
  box-sizing: border-box;
  transition: transform var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-about .about-node__year {
  display: block;
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: clamp(34px, 6vw, 54px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--ink-950);
  transform-origin: left center;
  transition: transform var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-about .about-node__title {
  margin: 12px 0 8px;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--ink-950);
}

.page-about .about-node__text {
  font-size: 15px;
  line-height: 1.78;
  color: var(--graphite-700);
  max-width: 30em;
}

.page-about .about-node:hover .about-node__year,
.page-about .about-node:focus-within .about-node__year {
  transform: scale(1.12);
  color: var(--amber-500);
}

.page-about .about-node:hover .about-node__dot,
.page-about .about-node:focus-within .about-node__dot {
  transform: scale(1.25);
  background: var(--amber-500);
}

.page-about .about-timeline__media {
  margin: clamp(44px, 7vw, 84px) 0 0;
  border-top: var(--about-rule) solid var(--ink-950);
  border-bottom: var(--about-rule) solid var(--ink-950);
  background: var(--indigo-900);
}

/* ---------- 团队 ---------- */

.page-about .about-team {
  padding: var(--about-pad) 0;
  background: var(--paper-50);
}

.page-about .about-team__bands {
  display: grid;
  gap: 18px;
  margin-bottom: clamp(34px, 5vw, 58px);
}

.page-about .about-band {
  border: 3px solid var(--ink-950);
  background: var(--paper-50);
  box-shadow: 8px 8px 0 var(--paper-300);
  transition: box-shadow var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-about .about-band--data {
  border-top: 12px solid var(--cyan-400);
}

.page-about .about-band--advisory {
  border-top: 12px solid var(--violet-500);
}

.page-about .about-band--service {
  border-top: 12px solid var(--indigo-700);
}

.page-about .about-band summary {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 18px 18px 16px;
  cursor: pointer;
  list-style: none;
  color: var(--ink-950);
}

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

.page-about .about-band__mark {
  font-family: var(--font-num);
  font-size: 13px;
  line-height: 1;
  color: var(--amber-500);
  flex: none;
}

.page-about .about-band__mark::before {
  content: "＋";
}

.page-about .about-band[open] .about-band__mark::before {
  content: "－";
}

.page-about .about-band__name {
  font-family: var(--font-display);
  font-size: clamp(16px, 1.6vw, 19px);
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-right: auto;
}

.page-about .about-band__num {
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: clamp(24px, 3vw, 36px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--ink-950);
  flex: none;
}

.page-about .about-band__unit {
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.1em;
  margin-left: 3px;
}

.page-about .about-band__body {
  padding: 0 18px 20px;
}

.page-about .about-band__body p {
  font-size: 15px;
  line-height: 1.78;
  color: var(--graphite-700);
  border-top: 2px solid var(--paper-300);
  padding-top: 14px;
}

.page-about .about-team__note {
  display: grid;
  gap: 28px;
}

.page-about .about-team__media {
  margin: 0;
  border: 3px solid var(--ink-950);
  box-shadow: 10px 10px 0 var(--indigo-700);
  background: var(--paper-50);
  overflow: hidden;
}

.page-about .about-team__media .media-caption {
  color: var(--cyan-100);
}

.page-about .about-team__text p + p {
  margin-top: 1.1em;
}

/* ---------- 覆盖范围 ---------- */

.page-about .about-reach {
  padding: var(--about-pad) 0;
  background: var(--ink-950);
  color: var(--cyan-100);
  border-top: var(--about-rule) solid var(--ink-950);
}

.page-about .about-reach .eyebrow {
  color: var(--cyan-400);
}

.page-about .about-reach .about-head__title {
  color: var(--paper-50);
}

.page-about .about-reach .about-head__note {
  color: var(--cyan-100);
  opacity: 0.82;
}

.page-about .about-reach__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 30px 20px;
  padding: 30px 0 clamp(30px, 4vw, 48px);
  border-top: 2px solid var(--indigo-700);
  border-bottom: 2px solid var(--indigo-700);
}

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

.page-about .about-reach__stat .stat-num {
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: clamp(38px, 6vw, 72px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.04em;
  color: var(--cyan-400);
}

.page-about .about-reach__stat .stat-num--amber {
  color: var(--amber-500);
}

.page-about .about-reach__stat .stat-key {
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--cyan-100);
  opacity: 0.8;
}

.page-about .about-reach__body {
  margin-top: clamp(30px, 4vw, 46px);
}

.page-about .about-reach__body p {
  color: var(--cyan-100);
  opacity: 0.9;
}

.page-about .about-industries {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 10px;
  margin: clamp(24px, 3.5vw, 38px) 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-industry {
  padding: 11px 14px;
  border: 2px solid var(--indigo-700);
  border-left: 5px solid var(--cyan-400);
  font-family: var(--font-num);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--paper-50);
  transition: border-left-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-about .about-industry:hover {
  border-left-color: var(--amber-500);
  transform: translateX(3px);
}

/* ---------- 我们的坚持 ---------- */

.page-about .about-hold {
  padding: var(--about-pad) 0;
  background: var(--paper-50);
  border-top: var(--about-rule) solid var(--ink-950);
}

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

.page-about .about-hold__item {
  padding: 26px 0 30px;
  border-top: 3px solid var(--ink-950);
}

.page-about .about-hold__num {
  display: inline-block;
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--ink-950);
  background: var(--cyan-400);
  padding: 5px 10px;
}

.page-about .about-hold__title {
  margin: 14px 0 8px;
  font-family: var(--font-display);
  font-size: clamp(19px, 2.2vw, 26px);
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.25;
  color: var(--ink-950);
}

.page-about .about-hold__item p {
  font-size: 15px;
  line-height: 1.8;
  color: var(--graphite-700);
  max-width: 34em;
}

/* ---------- 在山东运营 ---------- */

.page-about .about-place {
  padding: var(--about-pad) 0;
  background: var(--paper-50);
  border-top: var(--about-rule) solid var(--ink-950);
}

.page-about .about-place__grid {
  display: grid;
  gap: 36px;
}

.page-about .about-place__title {
  margin: 10px 0 18px;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(28px, 4.4vw, 50px);
  line-height: 1.08;
  letter-spacing: -0.03em;
  color: var(--ink-950);
}

.page-about .about-place__facts {
  margin: 0;
  padding: 0;
  display: grid;
  align-content: start;
}

.page-about .about-place__facts > div {
  display: grid;
  grid-template-columns: 96px minmax(0, 1fr);
  gap: 14px;
  padding: 15px 0;
  border-top: 2px solid var(--paper-300);
}

.page-about .about-place__facts > div:last-child {
  border-bottom: 2px solid var(--paper-300);
}

.page-about .about-place__facts dt {
  font-family: var(--font-num);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--graphite-700);
  opacity: 0.72;
  padding-top: 4px;
}

.page-about .about-place__facts dd {
  margin: 0;
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: 15px;
  line-height: 1.6;
  color: var(--ink-950);
  word-break: break-word;
}

/* ---------- CTA ---------- */

.page-about .about-cta {
  padding: clamp(46px, 7vw, 92px) 0;
  background: var(--indigo-900);
  border-top: var(--about-rule) solid var(--ink-950);
}

.page-about .about-cta__line {
  max-width: 20em;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(26px, 4vw, 48px);
  line-height: 1.14;
  letter-spacing: -0.03em;
  color: var(--paper-50);
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: clamp(24px, 3.5vw, 40px);
}

.page-about .about-cta__note {
  margin-top: 22px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--cyan-100);
  opacity: 0.85;
  max-width: 34em;
}

.page-about .about-cta__note a {
  color: var(--cyan-400);
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 4px;
}

/* ---------- 桌面端 ---------- */

@media (min-width: 760px) {
  .page-about .about-reach__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 24px;
  }

  .page-about .about-hold__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 48px;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__top {
    grid-template-columns: 130px minmax(0, 1fr);
    gap: 44px;
    align-items: start;
  }

  .page-about .about-hero__index {
    padding-top: 14px;
  }

  .page-about .about-view__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 64px;
    align-items: start;
  }

  .page-about .about-rail {
    padding: 0;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0 34px;
  }

  .page-about .about-rail::before {
    left: 0;
    right: 0;
    top: 8px;
    bottom: auto;
    width: auto;
    height: var(--about-rule);
  }

  .page-about .about-node {
    padding-top: 50px;
  }

  .page-about .about-node__dot {
    left: 0;
    top: 0;
  }

  .page-about .about-team__bands {
    grid-template-columns: 15fr 11fr 16fr;
    gap: 16px;
    align-items: stretch;
  }

  .page-about .about-team__note {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 56px;
    align-items: center;
  }

  .page-about .about-place__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 64px;
    align-items: start;
  }
}

@media (min-width: 1180px) {
  .page-about .about-view__side {
    padding-top: 8px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-node__year,
  .page-about .about-node__dot,
  .page-about .about-band,
  .page-about .about-industry {
    transition: none;
  }

  .page-about .about-node:hover .about-node__year,
  .page-about .about-node:focus-within .about-node__year {
    transform: none;
  }

  .page-about .about-node:hover .about-node__dot,
  .page-about .about-node:focus-within .about-node__dot {
    transform: none;
  }
}