.page-about {
  --about-rail: 92px;
  --about-line: rgba(192, 138, 46, 0.24);
  background: var(--night);
  color: var(--paper);
  font-family: var(--font-body);
  line-height: 1.75;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: calc(var(--header-h) + 64px) 0 68px;
  background:
    radial-gradient(120% 100% at 84% 0%, rgba(75, 46, 99, 0.62), transparent 62%),
    linear-gradient(180deg, #081426 0%, var(--night) 38%, var(--plateau) 100%);
  overflow: hidden;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0;
  width: 46%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--brass));
}

.page-about .about-hero__grid {
  display: grid;
  gap: 34px;
  margin-top: 26px;
}

.page-about .about-hero__eyebrow {
  margin: 0 0 18px;
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--brass-lite);
}

.page-about .about-hero__title {
  margin: 0 0 22px;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(1.9rem, 6.4vw, 3.9rem);
  line-height: 1.16;
  letter-spacing: 0.02em;
  max-width: 22ch;
}

.page-about .about-hero__lede {
  margin: 0;
  max-width: 58ch;
  font-size: 0.98rem;
  line-height: 1.9;
  color: rgba(245, 242, 233, 0.82);
}

.page-about .about-hero__aside-cap {
  margin: 0 0 12px;
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--note);
}

.page-about .about-hero__facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
}

.page-about .about-hero__facts li {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 15px 13px;
  background: rgba(8, 20, 38, 0.72);
}

.page-about .about-hero__fact-num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 1.66rem;
  line-height: 1;
  color: var(--brass-lite);
}

.page-about .about-hero__fact-key {
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--note);
}

.page-about .about-hero__aside-note {
  margin: 12px 0 0;
  font-size: 12px;
  color: var(--note);
}

/* ---------- 建设历程 ---------- */
.page-about .about-years {
  padding: 68px 0 82px;
  background: linear-gradient(180deg, var(--plateau) 0%, #102745 55%, var(--night) 100%);
}

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

.page-about .about-scale {
  display: none;
}

.page-about .about-timeline {
  margin: 34px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-timeline__item {
  position: relative;
  display: grid;
  gap: 8px;
  padding: 22px 0 22px 24px;
  border-left: 1px solid var(--about-line);
}

.page-about .about-timeline__item:last-child {
  padding-bottom: 4px;
}

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: -4px;
  top: 30px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--brass);
  box-shadow: 0 0 0 4px rgba(192, 138, 46, 0.14);
}

.page-about .about-timeline__year {
  margin: 0;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 13px;
  letter-spacing: 0.18em;
  color: var(--brass-lite);
}

.page-about .about-timeline__body h3 {
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1.2rem;
  line-height: 1.5;
  color: var(--paper);
}

.page-about .about-timeline__body p {
  margin: 0;
  font-size: 0.93rem;
  line-height: 1.85;
  color: rgba(245, 242, 233, 0.7);
}

/* ---------- 资料覆盖 ---------- */
.page-about .about-scope {
  padding: 78px 0 84px;
  background: var(--night);
}

.page-about .about-scope__grid {
  display: grid;
  gap: 16px;
  margin-top: 36px;
}

.page-about .about-scope__card {
  padding: 24px 20px 22px;
  background: linear-gradient(160deg, rgba(20, 48, 79, 0.95), rgba(8, 20, 38, 0.95));
  border: 1px solid var(--line-soft);
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 0 100%);
}

.page-about .about-scope__num {
  margin: 0;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 2.5rem;
  line-height: 1;
  color: var(--brass-lite);
}

.page-about .about-scope__title {
  margin: 10px 0 8px;
  font-size: 0.95rem;
  letter-spacing: 0.08em;
  color: var(--paper);
}

.page-about .about-scope__text {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.8;
  color: rgba(245, 242, 233, 0.66);
}

.page-about .about-scope__line {
  margin: 38px 0 0;
  padding-left: 18px;
  border-left: 2px solid var(--brass);
  font-size: 0.95rem;
  line-height: 1.9;
  color: rgba(245, 242, 233, 0.82);
  max-width: 74ch;
}

.page-about .about-growth {
  margin: 44px 0 0;
  padding: 24px 18px 12px;
  border: 1px solid var(--line-soft);
  background: linear-gradient(180deg, rgba(20, 48, 79, 0.5), rgba(11, 27, 51, 0.14));
}

.page-about .about-growth__cap {
  margin: 0 0 16px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--note);
}

.page-about .about-growth svg {
  display: block;
  width: 100%;
  height: auto;
}

.page-about .about-growth__area {
  fill: rgba(192, 138, 46, 0.16);
}

.page-about .about-growth__line {
  fill: none;
  stroke: var(--brass);
  stroke-width: 2;
}

.page-about .about-growth__base {
  stroke: var(--hair);
  stroke-width: 1;
}

.page-about .about-growth__dot {
  fill: var(--brass-lite);
}

.page-about .about-growth__label {
  fill: var(--note);
  font-family: var(--font-mono);
  font-size: 12px;
}

/* ---------- 采编与校核 ---------- */
.page-about .about-team {
  padding: 78px 0 84px;
  background: linear-gradient(180deg, var(--night) 0%, #35214C 48%, var(--indigo) 100%);
}

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

.page-about .about-team__lede {
  margin: 28px 0 0;
  font-size: 0.96rem;
  line-height: 1.9;
  color: rgba(245, 242, 233, 0.82);
  max-width: 58ch;
}

.page-about .about-team__roles {
  display: grid;
  gap: 12px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-team__roles li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  padding: 16px 18px;
  border-left: 2px solid var(--brass);
  background: rgba(11, 27, 51, 0.42);
}

.page-about .about-team__idx {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 0.86rem;
  color: var(--brass-lite);
  padding-top: 3px;
}

.page-about .about-team__roles h3 {
  margin: 0 0 6px;
  font-family: var(--font-head);
  font-size: 1.04rem;
  color: var(--paper);
}

.page-about .about-team__roles p {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.8;
  color: rgba(245, 242, 233, 0.7);
}

.page-about .about-team__foot {
  margin: 24px 0 0;
  font-size: 0.88rem;
  letter-spacing: 0.02em;
  color: var(--brass-lite);
}

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

.page-about .about-team__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(0.7) contrast(1.03) brightness(0.92);
}

/* ---------- 通栏 ---------- */
.page-about .about-banner {
  position: relative;
  margin: 0;
}

.page-about .about-banner img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 7;
  object-fit: cover;
  filter: saturate(0.66) brightness(0.9);
}

.page-about .about-banner::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(11, 27, 51, 0.6) 0%, rgba(11, 27, 51, 0.08) 46%, rgba(11, 27, 51, 0.82) 100%);
}

.page-about .about-banner__cap {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 18px;
  z-index: 1;
  margin: 0 auto;
  padding: 0 20px;
  max-width: var(--wrap);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: rgba(245, 242, 233, 0.82);
}

/* ---------- 纠错流程 ---------- */
.page-about .about-corr {
  padding: 76px 0 82px;
  background: var(--night);
}

.page-about .about-corr__panel {
  padding: 36px 22px 34px;
  background: var(--paper);
  color: var(--paper-ink);
  clip-path: polygon(26px 0, 100% 0, 100% calc(100% - 26px), calc(100% - 26px) 100%, 0 100%, 0 26px);
}

.page-about .about-corr__title {
  margin: 0 0 14px;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(1.45rem, 4.4vw, 2.1rem);
  line-height: 1.3;
  color: var(--paper-ink);
}

.page-about .about-corr__lede {
  margin: 0;
  max-width: 64ch;
  font-size: 0.94rem;
  line-height: 1.9;
  color: #3B4756;
}

.page-about .about-corr__grid {
  display: grid;
  gap: 24px;
  margin-top: 30px;
  padding-top: 26px;
  border-top: 1px solid rgba(14, 26, 38, 0.16);
}

.page-about .about-corr__num {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 1.5rem;
  line-height: 1.2;
  color: #8A5F14;
}

.page-about .about-corr__cell h3 {
  margin: 0 0 6px;
  font-size: 0.92rem;
  letter-spacing: 0.06em;
  color: var(--paper-ink);
}

.page-about .about-corr__cell p {
  margin: 0;
  font-size: 0.86rem;
  line-height: 1.8;
  color: #46525F;
}

/* ---------- 共建伙伴 ---------- */
.page-about .about-partners {
  padding: 104px 0 108px;
  background: var(--night);
}

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

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

.page-about .about-partners__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(0.72) brightness(0.94);
  clip-path: polygon(22px 0, 100% 0, 100% calc(100% - 22px), calc(100% - 22px) 100%, 0 100%, 0 22px);
}

.page-about .about-partners__lede {
  margin: 26px 0 0;
  font-size: 0.95rem;
  line-height: 1.9;
  color: rgba(245, 242, 233, 0.82);
  max-width: 56ch;
}

.page-about .about-partners__list {
  display: grid;
  gap: 16px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-partners__list li {
  padding: 16px 18px;
  border: 1px solid var(--line-soft);
  background: rgba(20, 48, 79, 0.34);
}

.page-about .about-partners__count {
  display: inline-block;
  margin-left: 10px;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 1.1rem;
  color: var(--brass-lite);
  vertical-align: baseline;
}

.page-about .about-partners__list p {
  margin: 10px 0 0;
  font-size: 0.86rem;
  line-height: 1.8;
  color: rgba(245, 242, 233, 0.66);
}

.page-about .about-partners__foot {
  margin: 26px 0 0;
  padding-left: 18px;
  border-left: 1px solid var(--about-line);
  font-size: 0.86rem;
  line-height: 1.85;
  color: var(--note);
  max-width: 58ch;
}

/* ---------- 开始使用 ---------- */
.page-about .about-routes {
  padding: 76px 0 92px;
  background: linear-gradient(180deg, var(--night) 0%, var(--plateau) 100%);
}

.page-about .about-routes__grid {
  display: grid;
  gap: 16px;
  margin-top: 36px;
}

.page-about .about-routes__card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 26px 22px 24px;
  text-decoration: none;
  color: inherit;
  border: 1px solid var(--line);
  background: linear-gradient(160deg, rgba(20, 48, 79, 0.9), rgba(8, 20, 38, 0.9));
  clip-path: polygon(0 0, calc(100% - 20px) 0, 100% 20px, 100% 100%, 0 100%);
  transition: transform 0.35s var(--ease), border-color 0.35s var(--ease);
}

.page-about .about-routes__card:hover,
.page-about .about-routes__card:focus-visible {
  transform: translateY(-4px);
  border-color: var(--brass);
}

.page-about .about-routes__idx {
  margin: 0;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 0.82rem;
  letter-spacing: 0.2em;
  color: var(--brass-lite);
}

.page-about .about-routes__card h3 {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1.12rem;
  line-height: 1.5;
  color: var(--paper);
}

.page-about .about-routes__card p {
  margin: 0;
  flex: 1;
  font-size: 0.88rem;
  line-height: 1.8;
  color: rgba(245, 242, 233, 0.68);
}

.page-about .about-routes__more {
  margin-top: 6px;
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  color: var(--brass);
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-about .about-scope__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
  }

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

@media (min-width: 760px) {
  .page-about .about-corr__panel {
    padding: 46px 40px 42px;
  }

  .page-about .about-corr__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 30px;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1fr) 268px;
    gap: 56px;
    align-items: end;
  }

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

  .page-about .about-team__inner {
    grid-template-columns: minmax(0, 1fr) minmax(0, 430px);
    gap: 54px;
    align-items: start;
  }

  .page-about .about-team__figure {
    margin-top: 42px;
  }

  .page-about .about-partners__inner {
    grid-template-columns: minmax(0, 420px) minmax(0, 1fr);
    gap: 56px;
    align-items: center;
  }

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

  .page-about .about-routes__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
  }
}

@media (min-width: 980px) {
  .page-about .about-years__inner {
    grid-template-columns: var(--about-rail) minmax(0, 1fr);
    gap: 48px;
  }

  .page-about .about-scale {
    display: block;
    position: sticky;
    top: calc(var(--header-h) + 48px);
    align-self: start;
    height: 400px;
  }

  .page-about .about-scale__line {
    position: absolute;
    left: 10px;
    top: 4px;
    bottom: 4px;
    width: 1px;
    background: linear-gradient(180deg, var(--brass) 0%, rgba(192, 138, 46, 0.16) 100%);
  }

  .page-about .about-scale__mark {
    position: absolute;
    left: 4px;
    width: 13px;
    height: 1px;
    background: var(--brass);
    opacity: 0.75;
  }

  .page-about .about-scale__mark--1 { top: 0; }
  .page-about .about-scale__mark--2 { top: 25%; }
  .page-about .about-scale__mark--3 { top: 50%; }
  .page-about .about-scale__mark--4 { top: 75%; }
  .page-about .about-scale__mark--5 { top: 100%; }

  .page-about .about-scope__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 20px;
  }

  .page-about .about-growth {
    padding: 30px 26px 14px;
  }

  .page-about .about-timeline__item {
    grid-template-columns: 88px minmax(0, 1fr);
    gap: 22px;
    padding-left: 30px;
  }

  .page-about .about-timeline__item::before {
    left: -4px;
    top: 34px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-routes__card {
    transition: none;
  }
}