.page-about {
  --about-nav-w: 244px;
  --about-sticky-top: 104px;
  overflow-wrap: break-word;
}

/* ---------- 面包屑 ---------- */
.page-about .about-crumbs {
  padding-top: 20px;
  padding-bottom: 4px;
}
.page-about .about-crumbs .crumbs__link {
  color: var(--mist);
  text-decoration: none;
  font-size: 0.84rem;
  border-bottom: 1px solid transparent;
  transition: color var(--t), border-color var(--t);
}
.page-about .about-crumbs .crumbs__link:hover {
  color: var(--orange);
  border-bottom-color: var(--orange);
}
.page-about .about-crumbs .crumbs__sep {
  color: var(--line);
  margin: 0 8px;
  font-family: var(--font-mono);
}
.page-about .about-crumbs .crumbs__current {
  color: var(--cream);
  font-size: 0.84rem;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: 28px 0 58px;
}
.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(44, 63, 134, 0.38) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(44, 63, 134, 0.38) 1px, transparent 1px);
  background-size: 62px 62px;
  -webkit-mask-image: linear-gradient(to bottom, #000 0%, transparent 86%);
  mask-image: linear-gradient(to bottom, #000 0%, transparent 86%);
  pointer-events: none;
}
.page-about .about-hero__grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 34px;
}
.page-about .about-hero__copy {
  min-width: 0;
}
.page-about .about-hero h1 {
  margin: 12px 0 18px;
  font-size: clamp(2rem, 8.6vw, 3.9rem);
  line-height: 1.04;
  letter-spacing: -0.02em;
  color: var(--cream);
}
.page-about .about-hero .lede {
  margin: 0;
  max-width: 42ch;
  color: var(--mist);
  font-size: 1.02rem;
  line-height: 1.8;
}
.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

/* 数据卡 */
.page-about .about-facts {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  min-width: 0;
}
.page-about .about-fact {
  min-width: 0;
  background: var(--panel);
  border: var(--bw) solid var(--line);
  border-radius: var(--r);
  box-shadow: var(--shadow-sm);
  padding: 16px 14px 14px;
  transition: transform var(--t), box-shadow var(--t), border-color var(--t);
}
.page-about .about-fact:hover {
  border-color: var(--orange);
  transform: translate(2px, 2px);
  box-shadow: none;
}
.page-about .about-fact--wide {
  grid-column: span 2;
}
.page-about .about-fact__num {
  display: block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(1.6rem, 7vw, 2.3rem);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--orange);
}
.page-about .about-fact--wide .about-fact__num {
  font-size: clamp(2rem, 9vw, 2.9rem);
}
.page-about .about-fact__unit {
  font-size: 0.5em;
  color: var(--amber);
  margin-left: 2px;
}
.page-about .about-fact__label {
  display: block;
  margin-top: 9px;
  font-size: 0.78rem;
  letter-spacing: 0.02em;
  color: var(--mist);
}

/* ---------- 我们做的事 ---------- */
.page-about .about-does__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 30px;
}
.page-about .about-does__text {
  min-width: 0;
}
.page-about .about-does__text p {
  margin: 0 0 16px;
  max-width: 44ch;
  color: var(--cream);
  font-size: 1rem;
  line-height: 1.8;
}
.page-about .about-does__text p:last-child {
  margin-bottom: 0;
}
.page-about .about-does__list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: var(--bw) solid var(--line);
  min-width: 0;
}
.page-about .about-does__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 10px;
  padding: 14px 2px;
  border-bottom: var(--bw) solid var(--line);
  transition: background var(--t), padding-left var(--t);
}
.page-about .about-does__item:hover {
  background: rgba(255, 122, 26, 0.09);
  padding-left: 10px;
}
.page-about .about-does__no {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 0.8rem;
  color: var(--orange);
}
.page-about .about-does__name {
  color: var(--cream);
  font-weight: 700;
  font-size: 0.98rem;
}
.page-about .about-does__item .tag {
  white-space: nowrap;
  font-size: 0.72rem;
}

/* ---------- 发展时间轴 ---------- */
.page-about .about-tl {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
  min-width: 0;
}
.page-about .about-tl__side {
  min-width: 0;
}
.page-about .about-tl__side-label {
  margin: 0 0 10px;
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--mist);
}
.page-about .about-tl__nav {
  list-style: none;
  margin: 0;
  padding: 0 0 4px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: none;
}
.page-about .about-tl__nav::-webkit-scrollbar {
  display: none;
}
.page-about .about-tl__link {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 9px 13px;
  white-space: nowrap;
  text-decoration: none;
  font-size: 0.86rem;
  color: var(--mist);
  background: rgba(27, 42, 97, 0.7);
  border: var(--bw) solid var(--line);
  border-radius: var(--r);
  transition: color var(--t), border-color var(--t), background var(--t);
}
.page-about .about-tl__link .num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.76rem;
  color: var(--orange);
}
.page-about .about-tl__link:hover,
.page-about .about-tl__link:focus-visible {
  color: var(--cream);
  border-color: var(--orange);
  background: rgba(255, 122, 26, 0.12);
}
.page-about .about-tl__body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
  min-width: 0;
}
.page-about .about-stage {
  min-width: 0;
  padding: 22px 20px 22px;
  background: var(--panel);
  border: var(--bw) solid var(--line);
  border-radius: var(--r);
  box-shadow: var(--shadow-sm);
  transition: border-color var(--t), transform var(--t), box-shadow var(--t);
}
.page-about .about-stage:hover {
  border-color: var(--orange);
  transform: translate(2px, 2px);
  box-shadow: none;
}
.page-about .about-stage__num {
  display: inline-block;
  margin-bottom: 12px;
  padding: 3px 9px;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.74rem;
  letter-spacing: 0.1em;
  color: var(--char);
  background: var(--orange);
  border-radius: 2px;
}
.page-about .about-stage h3 {
  margin: 0 0 10px;
  font-size: clamp(1.14rem, 4.4vw, 1.46rem);
  line-height: 1.32;
  color: var(--cream);
}
.page-about .about-stage p {
  margin: 0;
  max-width: 46ch;
  font-size: 0.95rem;
  line-height: 1.78;
  color: var(--mist);
}
.page-about .about-stage__meta {
  list-style: none;
  margin: 16px 0 0;
  padding: 14px 0 0;
  border-top: 2px dashed rgba(44, 63, 134, 0.85);
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
  font-size: 0.83rem;
  color: var(--mist);
}
.page-about .about-stage__meta .num {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--mint);
  margin-right: 3px;
}
.page-about .about-tl__figure {
  margin: 0;
  min-width: 0;
}
.page-about .about-tl__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border: var(--bw) solid var(--line);
  border-radius: var(--r);
  box-shadow: var(--shadow-sm);
}
.page-about .about-tl__figure .media__caption {
  margin-top: 8px;
  font-size: 0.78rem;
  color: var(--mist);
}

/* ---------- 数据生产流水线 ---------- */
.page-about .about-flow {
  color: var(--char);
}
.page-about .about-flow .section-head h2 {
  color: var(--char);
}
.page-about .about-flow .section-head .eyebrow {
  color: var(--orange-deep);
}
.page-about .about-flow .section-head .lede {
  color: #3a4470;
}
.page-about .about-flow__figure {
  margin: 0 0 30px;
  min-width: 0;
}
.page-about .about-flow__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border: var(--bw) solid var(--char);
  border-radius: var(--r);
  box-shadow: var(--shadow);
}
.page-about .about-flow__figure .media__caption {
  margin-top: 10px;
  font-size: 0.78rem;
  color: #3a4470;
}
.page-about .about-flow__steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
}
.page-about .about-flow__step {
  position: relative;
  min-width: 0;
}
.page-about .about-flow__box {
  height: 100%;
  background: #FFFFFF;
  border: var(--bw) solid var(--char);
  border-radius: var(--r);
  box-shadow: var(--shadow-sm);
  transition: transform var(--t), box-shadow var(--t), border-color var(--t);
}
.page-about .about-flow__box:hover {
  transform: translate(2px, 2px);
  box-shadow: none;
  border-color: var(--orange-deep);
}
.page-about .about-flow__sum {
  display: block;
  padding: 18px 16px 16px;
  list-style: none;
  cursor: pointer;
}
.page-about .about-flow__sum::-webkit-details-marker {
  display: none;
}
.page-about .about-flow__idx {
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: var(--orange-deep);
}
.page-about .about-flow__name {
  display: block;
  font-size: 1.2rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--char);
}
.page-about .about-flow__val {
  display: block;
  margin-top: 10px;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.02rem;
  color: var(--char);
}
.page-about .about-flow__hint {
  display: block;
  margin-top: 2px;
  font-size: 0.75rem;
  color: var(--line);
}
.page-about .about-flow__body {
  padding: 14px 16px 18px;
  border-top: 2px dashed rgba(44, 63, 134, 0.5);
}
.page-about .about-flow__body p {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.72;
  color: #2b3457;
}

/* ---------- 团队分工 ---------- */
.page-about .about-team__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 30px;
  min-width: 0;
}
.page-about .about-team__total {
  min-width: 0;
}
.page-about .about-team__big {
  display: block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(3.4rem, 15vw, 5.6rem);
  line-height: 0.9;
  letter-spacing: -0.04em;
  color: var(--orange);
}
.page-about .about-team__total p {
  margin: 14px 0 0;
  max-width: 38ch;
  font-size: 0.94rem;
  line-height: 1.78;
  color: var(--mist);
}
.page-about .about-team__bars {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 15px;
  min-width: 0;
}
.page-about .about-team__row {
  display: grid;
  grid-template-columns: 6.2em minmax(0, 1fr) 2.6em;
  align-items: center;
  gap: 12px;
}
.page-about .about-team__row--a { --bar: 38%; }
.page-about .about-team__row--b { --bar: 26%; }
.page-about .about-team__row--c { --bar: 22%; }
.page-about .about-team__row--d { --bar: 13%; }
.page-about .about-team__name {
  font-size: 0.84rem;
  color: var(--cream);
  white-space: nowrap;
}
.page-about .about-team__track {
  display: block;
  height: 18px;
  background: rgba(44, 63, 134, 0.4);
  border: 2px solid var(--line);
  border-radius: 2px;
  overflow: hidden;
}
.page-about .about-team__fill {
  display: block;
  height: 100%;
  width: var(--bar, 0%);
  background: linear-gradient(90deg, var(--orange), var(--amber));
  transition: background var(--t);
}
.page-about .about-team__row:hover .about-team__fill {
  background: linear-gradient(90deg, var(--amber), var(--mint));
}
.page-about .about-team__count {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1rem;
  text-align: right;
  color: var(--mint);
  transition: color var(--t);
}
.page-about .about-team__row:hover .about-team__count {
  color: var(--orange);
}

/* ---------- 覆盖与服务能力 ---------- */
.page-about .about-cover__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}
.page-about .about-cover__cell {
  min-width: 0;
  padding: 20px 18px;
  background: rgba(16, 26, 60, 0.62);
  border: var(--bw) solid var(--line);
  border-radius: var(--r);
  transition: border-color var(--t), transform var(--t);
}
.page-about .about-cover__cell:hover {
  border-color: var(--orange);
  transform: translateY(-3px);
}
.page-about .about-cover__num {
  display: block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(1.8rem, 8vw, 2.3rem);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--mint);
}
.page-about .about-cover__cell h3 {
  margin: 12px 0 8px;
  font-size: 1rem;
  color: var(--cream);
}
.page-about .about-cover__cell p {
  margin: 0;
  font-size: 0.87rem;
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- 合作与认可 ---------- */
.page-about .about-partners {
  color: var(--char);
}
.page-about .about-partners .section-head h2 {
  color: var(--char);
}
.page-about .about-partners .section-head .eyebrow {
  color: var(--orange-deep);
}
.page-about .about-partners__cards {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
}
.page-about .about-partner {
  min-width: 0;
  padding: 20px 18px;
  background: var(--panel);
  border: var(--bw) solid var(--char);
  border-radius: var(--r);
  box-shadow: var(--shadow-sm);
  transition: transform var(--t), box-shadow var(--t), border-color var(--t);
}
.page-about .about-partner:hover {
  transform: translate(3px, 3px);
  box-shadow: none;
  border-color: var(--orange);
}
.page-about .about-partner__num {
  display: block;
  margin: 14px 0 2px;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 2.2rem;
  line-height: 1;
  color: var(--orange);
}
.page-about .about-partner h3 {
  margin: 0 0 8px;
  font-size: 1rem;
  color: var(--cream);
}
.page-about .about-partner p {
  margin: 0;
  font-size: 0.86rem;
  line-height: 1.7;
  color: var(--mist);
}
.page-about .about-partners__lower {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 20px;
  margin-top: 22px;
  min-width: 0;
}
.page-about .about-partners__figure {
  margin: 0;
  min-width: 0;
}
.page-about .about-partners__figure img {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 220px;
  object-fit: cover;
  border: var(--bw) solid var(--char);
  border-radius: var(--r);
  box-shadow: var(--shadow-sm);
}
.page-about .about-partners__figure .media__caption {
  margin-top: 9px;
  font-size: 0.78rem;
  color: #3a4470;
}
.page-about .about-honor {
  min-width: 0;
  padding: 24px 22px;
  background: var(--char);
  border-radius: var(--r);
  color: var(--cream);
}
.page-about .about-honor h3 {
  margin: 0 0 16px;
  font-size: 1.05rem;
  color: var(--orange);
}
.page-about .about-honor__list {
  list-style: none;
  margin: 0 0 16px;
  padding: 0;
  display: grid;
  gap: 12px;
}
.page-about .about-honor__list li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px;
  align-items: baseline;
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--cream);
  padding-bottom: 12px;
  border-bottom: 2px dashed rgba(142, 156, 212, 0.35);
}
.page-about .about-honor__list li:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}
.page-about .about-honor__list .num {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--mint);
}
.page-about .about-honor p {
  margin: 0;
  font-size: 0.84rem;
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- 我们坚持的几件事 ---------- */
.page-about .about-rules {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: var(--bw) solid var(--line);
}
.page-about .about-rule {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 16px;
  padding: 20px 2px;
  border-bottom: var(--bw) solid var(--line);
  transition: background var(--t), padding-left var(--t);
}
.page-about .about-rule:hover {
  background: rgba(255, 122, 26, 0.08);
  padding-left: 12px;
}
.page-about .about-rule__no {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.24rem;
  line-height: 1.2;
  color: var(--orange);
}
.page-about .about-rule__body {
  min-width: 0;
}
.page-about .about-rule h3 {
  margin: 0 0 6px;
  font-size: 1.04rem;
  color: var(--cream);
}
.page-about .about-rule p {
  margin: 0;
  max-width: 56ch;
  font-size: 0.9rem;
  line-height: 1.72;
  color: var(--mist);
}

/* ---------- 收尾入口 ---------- */
.page-about .about-cta {
  padding: 52px 0 60px;
}
.page-about .about-cta__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 22px;
  min-width: 0;
}
.page-about .about-cta h2 {
  margin: 0 0 10px;
  font-size: clamp(1.4rem, 5.4vw, 2rem);
  line-height: 1.24;
  color: var(--cream);
}
.page-about .about-cta p {
  margin: 0;
  max-width: 52ch;
  font-size: 0.94rem;
  line-height: 1.76;
  color: var(--mist);
}
.page-about .about-cta__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.page-about .about-cta__links .btn {
  min-height: 56px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

/* ---------- 桌面栅格 ---------- */
@media (min-width: 640px) {
  .page-about .about-facts {
    gap: 14px;
  }
  .page-about .about-cover__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }
  .page-about .about-partners__cards {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
  }
  .page-about .about-flow__steps {
    gap: 20px;
  }
}

@media (min-width: 860px) {
  .page-about .about-hero {
    padding: 40px 0 72px;
  }
  .page-about .about-hero__grid {
    grid-template-columns: 7fr 5fr;
    gap: 48px;
    align-items: start;
  }
  .page-about .about-does__grid {
    grid-template-columns: 5fr 7fr;
    gap: 46px;
    align-items: start;
  }
  .page-about .about-team__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 48px;
    align-items: center;
  }
  .page-about .about-flow__steps {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 26px;
  }
  .page-about .about-flow__step + .about-flow__step::before {
    content: "";
    position: absolute;
    left: -18px;
    top: 36px;
    width: 0;
    height: 0;
    border-left: 10px solid var(--orange);
    border-top: 7px solid transparent;
    border-bottom: 7px solid transparent;
    border-right: 0;
  }
  .page-about .about-partners__lower {
    grid-template-columns: 7fr 5fr;
    gap: 26px;
    align-items: stretch;
  }
  .page-about .about-cta__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 40px;
    align-items: center;
  }
  .page-about .section {
    padding-top: 64px;
    padding-bottom: 64px;
  }
}

@media (min-width: 960px) {
  .page-about .about-tl {
    grid-template-columns: var(--about-nav-w) minmax(0, 1fr);
    gap: 52px;
    align-items: start;
  }
  .page-about .about-tl__side {
    position: sticky;
    top: var(--about-sticky-top);
  }
  .page-about .about-tl__nav {
    flex-direction: column;
    gap: 2px;
    overflow: visible;
    padding: 0;
    border-left: var(--bw) solid var(--line);
  }
  .page-about .about-tl__link {
    background: transparent;
    border: 0;
    border-radius: 0;
    box-shadow: inset 4px 0 0 transparent;
    padding: 11px 14px;
    font-size: 0.9rem;
  }
  .page-about .about-tl__link:hover,
  .page-about .about-tl__link:focus-visible {
    background: rgba(255, 122, 26, 0.1);
    box-shadow: inset 4px 0 0 var(--orange);
  }
}

@media (min-width: 1100px) {
  .page-about .about-stage--shift {
    margin-left: 58px;
  }
  .page-about .about-cover__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-fact,
  .page-about .about-stage,
  .page-about .about-flow__box,
  .page-about .about-partner,
  .page-about .about-cover__cell,
  .page-about .about-rule,
  .page-about .about-does__item {
    transition: none;
  }
  .page-about .about-fact:hover,
  .page-about .about-stage:hover,
  .page-about .about-partner:hover,
  .page-about .about-flow__box:hover {
    transform: none;
  }
}