.page-about {
  --about-hero-pad: 36px;
  --about-block-pad: 52px;
}

/* ============ 首屏 ============ */
.page-about .about-hero {
  position: relative;
  padding: var(--about-hero-pad) 0 44px;
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 88px 88px;
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.85), transparent 90%);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.85), transparent 90%);
  pointer-events: none;
}

.page-about .about-hero .container {
  position: relative;
  z-index: 1;
}

.page-about .about-hero__coord {
  margin: 26px 0 10px;
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--graphite);
}

.page-about .about-hero__title {
  margin: 0 0 18px;
  max-width: 18em;
  font-size: clamp(27px, 6.4vw, 50px);
  line-height: 1.16;
  font-weight: 800;
  letter-spacing: -0.022em;
  color: var(--seed);
}

.page-about .about-hero__lead {
  margin: 0;
  max-width: 680px;
  font-size: 16px;
  line-height: 1.85;
  color: var(--graphite);
}

.page-about .about-hero__facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 34px 0 0;
  padding: 0;
  list-style: none;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  overflow: hidden;
}

.page-about .about-hero__facts li {
  background: var(--white);
  padding: 15px 16px 16px;
}

.page-about .about-hero__facts .mono {
  display: block;
  font-size: 26px;
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--seed);
}

.page-about .about-hero__facts .mono small {
  font-size: 13px;
  font-weight: 500;
  margin-left: 2px;
  color: var(--kiwi-dark);
}

.page-about .about-hero__facts em {
  display: block;
  margin-top: 5px;
  font-style: normal;
  font-size: 13px;
  color: var(--graphite);
}

/* ============ 通用区块 ============ */
.page-about .about-block {
  padding: var(--about-block-pad) 0;
  border-bottom: 1px solid var(--line);
}

.page-about .about-head {
  max-width: 720px;
  margin-bottom: 26px;
}

.page-about .about-head .section__title {
  font-size: clamp(23px, 4.2vw, 34px);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.22;
  color: var(--seed);
  margin: 8px 0 0;
}

.page-about .about-head__lead {
  margin: 14px 0 0;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--graphite);
}

.page-about .about-split {
  display: grid;
  gap: 20px;
}

.page-about .about-split .section__title {
  font-size: clamp(22px, 4vw, 32px);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.25;
  color: var(--seed);
  margin: 8px 0 0;
}

.page-about .about-split__body p {
  margin: 0 0 16px;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--graphite);
}

.page-about .about-split__body p:last-of-type {
  margin-bottom: 20px;
}

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

/* ============ 时间轴 ============ */
.page-about .timeline {
  --tl-year: 58px;
  --tl-rail: 20px;
  --tl-gap: 12px;
  position: relative;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .timeline::before {
  content: "";
  position: absolute;
  left: calc(var(--tl-year) + var(--tl-gap) + var(--tl-rail) / 2);
  top: 10px;
  bottom: 24px;
  width: 1px;
  background: var(--line);
}

.page-about .timeline__item {
  display: grid;
  grid-template-columns: var(--tl-year) var(--tl-rail) minmax(0, 1fr);
  column-gap: var(--tl-gap);
  align-items: start;
  padding-bottom: 22px;
}

.page-about .timeline__item:last-child {
  padding-bottom: 0;
}

.page-about .timeline__year {
  grid-column: 1;
  grid-row: 1;
  padding-top: 14px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--kiwi-dark);
}

.page-about .timeline__dot {
  grid-column: 2;
  grid-row: 1;
  justify-self: center;
  align-self: start;
  margin-top: 16px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--kiwi);
  box-shadow: 0 0 0 4px rgba(47, 209, 138, 0.16);
  z-index: 1;
}

.page-about .timeline__item--now .timeline__dot {
  animation: page-about-pulse 1.2s var(--ease) 1;
}

@keyframes page-about-pulse {
  0% { box-shadow: 0 0 0 0 rgba(47, 209, 138, 0.55); }
  100% { box-shadow: 0 0 0 18px rgba(47, 209, 138, 0); }
}

.page-about .timeline__card {
  grid-column: 3;
  grid-row: 1;
  background: var(--white);
  border: 1px solid var(--line);
  border-left: 3px solid var(--kiwi);
  border-radius: var(--radius-s);
  padding: 15px 16px 16px;
  box-shadow: var(--shadow-1);
}

.page-about .timeline__card h3 {
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 800;
  letter-spacing: -0.01em;
  line-height: 1.4;
  color: var(--seed);
}

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

.page-about .timeline__item--now .timeline__card {
  background: var(--deep);
  border-color: var(--deep);
  border-left-color: var(--electric);
}

.page-about .timeline__item--now .timeline__card h3 {
  color: var(--white);
}

.page-about .timeline__item--now .timeline__card p {
  color: rgba(246, 248, 246, 0.72);
}

/* ============ 团队 ============ */
.page-about .about-team {
  display: grid;
  gap: 28px;
}

.page-about .about-team .section__title {
  font-size: clamp(22px, 4vw, 32px);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.25;
  color: var(--seed);
  margin: 8px 0 0;
}

.page-about .about-team__lead {
  margin: 14px 0 0;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--graphite);
}

.page-about .team-bar {
  margin: 26px 0 0;
  border-top: 1px solid var(--line);
}

.page-about .team-bar__row {
  position: relative;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 11px 0;
  border-bottom: 1px solid var(--line);
}

.page-about .team-bar__label {
  flex: 0 0 auto;
  width: 92px;
  font-size: 13.5px;
  line-height: 1.35;
  color: var(--seed);
}

.page-about .team-bar__track {
  flex: 1 1 auto;
  min-width: 40px;
  height: 9px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--pill);
  overflow: hidden;
}

.page-about .team-bar__fill {
  display: block;
  height: 100%;
  min-width: 6px;
  border-radius: var(--pill);
  background: var(--kiwi);
}

.page-about .team-bar__fill--a { width: 43%; background: var(--kiwi); }
.page-about .team-bar__fill--b { width: 22%; background: var(--electric); }
.page-about .team-bar__fill--c { width: 15%; background: var(--kiwi-dark); }
.page-about .team-bar__fill--d { width: 12%; background: var(--graphite); }
.page-about .team-bar__fill--e { width: 10%; background: var(--violet); }

.page-about .team-bar__num {
  flex: 0 0 auto;
  width: 26px;
  text-align: right;
  font-size: 14px;
  font-weight: 700;
  color: var(--seed);
}

.page-about .team-bar__tip {
  position: absolute;
  right: 0;
  bottom: calc(100% - 6px);
  z-index: 4;
  max-width: 280px;
  padding: 9px 12px;
  border-radius: var(--radius-s);
  background: var(--seed);
  color: var(--white);
  font-size: 12.5px;
  line-height: 1.6;
  box-shadow: var(--shadow-2);
  opacity: 0;
  transform: translateY(6px);
  pointer-events: none;
  transition: opacity 180ms var(--ease), transform 180ms var(--ease);
}

.page-about .team-bar__row:hover .team-bar__tip,
.page-about .team-bar__row:focus-within .team-bar__tip {
  opacity: 1;
  transform: translateY(0);
}

.page-about .about-team__note {
  margin: 18px 0 0;
  padding-left: 14px;
  border-left: 3px solid var(--electric);
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--graphite);
}

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

/* ============ 流程 ============ */
.page-about .about-flow__figure {
  margin: 0 0 24px;
}

.page-about .flow-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  overflow: hidden;
}

.page-about .flow-step {
  background: var(--white);
  padding: 20px 18px 22px;
}

.page-about .flow-step__no {
  display: inline-block;
  padding-bottom: 3px;
  border-bottom: 2px solid var(--kiwi);
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--kiwi-dark);
}

.page-about .flow-step h3 {
  margin: 14px 0 8px;
  font-size: 16.5px;
  font-weight: 800;
  letter-spacing: -0.01em;
  line-height: 1.4;
  color: var(--seed);
}

.page-about .flow-step p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--graphite);
}

.page-about .flow-step__fields {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .flow-step__fields li {
  padding: 3px 9px;
  border: 1px solid var(--line);
  border-radius: var(--pill);
  background: var(--paper);
  font-size: 12px;
  color: var(--graphite);
}

/* ============ 服务对象 ============ */
.page-about .partner-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-about .partner-card {
  padding: 20px 18px 22px;
  background: var(--white);
  border: 1px solid var(--line);
  border-left: 3px solid var(--kiwi);
  border-radius: var(--radius-s);
  box-shadow: var(--shadow-1);
  transition: transform 220ms var(--ease), box-shadow 220ms var(--ease);
}

.page-about .partner-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-2);
}

.page-about .partner-card--electric { border-left-color: var(--electric); }
.page-about .partner-card--violet { border-left-color: var(--violet); }

.page-about .partner-card h3 {
  margin: 0 0 10px;
  font-size: 16px;
  font-weight: 800;
  letter-spacing: -0.01em;
  line-height: 1.4;
  color: var(--seed);
}

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

.page-about .about-partners__more {
  margin: 24px 0 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--graphite);
}

.page-about .about-partners__more a {
  color: var(--kiwi-dark);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-about .about-partners__more a:hover {
  color: var(--seed);
}

/* ============ 地域与合规 ============ */
.page-about .about-region {
  position: relative;
  padding: var(--about-block-pad) 0;
  background: var(--deep);
  color: var(--white);
  overflow: hidden;
}

.page-about .about-region::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--dark-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--dark-line) 1px, transparent 1px);
  background-size: 64px 64px;
  pointer-events: none;
}

.page-about .about-region .container {
  position: relative;
  z-index: 1;
}

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

.page-about .about-region .section__coord {
  color: rgba(47, 209, 138, 0.85);
}

.page-about .about-region .section__title {
  font-size: clamp(22px, 4vw, 32px);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.25;
  color: var(--white);
  margin: 8px 0 0;
}

.page-about .about-region__lead {
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(246, 248, 246, 0.68);
}

.page-about .fact-list {
  margin: 26px 0 0;
  padding: 0;
}

.page-about .fact-list__row {
  display: grid;
  grid-template-columns: 84px minmax(0, 1fr);
  gap: 4px 16px;
  padding: 12px 0;
  border-top: 1px solid var(--dark-line);
}

.page-about .fact-list__row dt {
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: rgba(246, 248, 246, 0.5);
}

.page-about .fact-list__row dd {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.65;
  color: var(--white);
  word-break: break-all;
}

.page-about .fact-list__row dd.mono {
  font-size: 13.5px;
  letter-spacing: 0.01em;
}

.page-about .about-region__note {
  margin: 22px 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--dark-line);
  font-size: 13px;
  line-height: 1.8;
  color: rgba(246, 248, 246, 0.58);
}

.page-about .about-region__figure {
  margin: 0;
  border-color: var(--dark-line);
}

/* ============ 结尾 ============ */
.page-about .about-cta {
  padding: 48px 0 56px;
}

.page-about .about-cta__panel {
  display: grid;
  gap: 20px;
  padding: 26px 20px 28px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
}

.page-about .about-cta__copy h2 {
  margin: 0 0 10px;
  font-size: clamp(20px, 3.4vw, 27px);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.3;
  color: var(--seed);
}

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

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-about .about-cta__foot {
  margin: 20px 0 0;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--graphite);
}

.page-about .about-cta__foot a {
  color: var(--kiwi-dark);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-about .about-cta__foot a:hover {
  color: var(--seed);
}

/* ============ 响应式 ============ */
@media (min-width: 640px) {
  .page-about .about-hero__facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .about-hero__facts li {
    padding: 18px 18px 20px;
  }

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

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

@media (min-width: 900px) {
  .page-about {
    --about-hero-pad: 52px;
    --about-block-pad: 72px;
  }

  .page-about .about-hero {
    padding-bottom: 60px;
  }

  .page-about .about-hero__lead {
    font-size: 17px;
  }

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

  .page-about .about-split {
    grid-template-columns: minmax(0, 320px) minmax(0, 1fr);
    gap: 56px;
    align-items: start;
  }

  .page-about .about-split__head .section__title {
    margin-top: 10px;
  }

  .page-about .about-team {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 48px;
    align-items: start;
  }

  .page-about .about-team__main {
    order: 1;
  }

  .page-about .about-team__figure {
    order: 2;
    position: sticky;
    top: 120px;
  }

  .page-about .about-team__lead {
    max-width: 56ch;
  }

  .page-about .team-bar__label {
    width: 112px;
    font-size: 14px;
  }

  .page-about .about-region__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 48px;
    align-items: start;
  }

  .page-about .timeline {
    --tl-year: 104px;
    --tl-gap: 24px;
  }

  .page-about .timeline__year {
    padding-top: 18px;
    font-size: 15px;
    text-align: right;
  }

  .page-about .timeline__dot {
    margin-top: 20px;
  }

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

  .page-about .timeline__card h3 {
    font-size: 17px;
  }

  .page-about .about-cta__panel {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    padding: 32px 34px;
    gap: 32px;
  }

  .page-about .about-cta__actions {
    justify-content: flex-end;
  }
}

@media (min-width: 1080px) {
  .page-about .flow-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .flow-step {
    padding: 24px 20px 26px;
  }
}

@media (max-width: 419px) {
  .page-about .team-bar__label {
    width: 78px;
    font-size: 12.5px;
  }

  .page-about .timeline {
    --tl-year: 48px;
    --tl-gap: 10px;
  }

  .page-about .timeline__year {
    font-size: 12px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .timeline__item--now .timeline__dot {
    animation: none;
  }

  .page-about .partner-card:hover {
    transform: none;
  }
}