.page-about {
  --about-ink-soft: rgba(12, 27, 40, .62);
  position: relative;
  overflow-x: clip;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: clamp(30px, 5vw, 62px) 0 clamp(40px, 6vw, 76px);
  overflow: hidden;
}

.page-about .about-hero__glow {
  position: absolute;
  inset: -22% -12% auto -12%;
  height: 78%;
  background:
    radial-gradient(52% 62% at 14% 26%, rgba(18, 135, 224, .34) 0%, rgba(18, 135, 224, 0) 66%),
    radial-gradient(46% 58% at 88% 12%, rgba(255, 106, 61, .28) 0%, rgba(255, 106, 61, 0) 68%);
  filter: blur(6px);
  pointer-events: none;
}

.page-about .about-hero__inner {
  position: relative;
  display: grid;
  gap: clamp(30px, 5vw, 60px);
  align-items: center;
}

.page-about .about-hero h1 {
  margin: 10px 0 20px;
  font-family: var(--font-head);
  font-size: clamp(36px, 7.2vw, 74px);
  line-height: 1.04;
  letter-spacing: -.02em;
  color: var(--c-text);
  transform: skewX(-2.5deg);
  transform-origin: left bottom;
}

.page-about .about-hero .lede {
  max-width: 34em;
  margin: 0 0 16px;
  font-size: clamp(16px, 1.6vw, 18px);
  line-height: 1.78;
  color: var(--c-text);
}

.page-about .about-hero__note {
  max-width: 32em;
  margin: 0;
  padding-left: 16px;
  border-left: 2px solid var(--c-coral);
  font-size: 15px;
  line-height: 1.75;
  color: var(--c-muted);
}

.page-about .about-hero__figure {
  position: relative;
  margin: 0;
}

.page-about .about-hero__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--r-lg);
  clip-path: polygon(0 0, 100% 0, 100% 86%, 86% 100%, 0 100%);
  box-shadow: var(--shadow-float), var(--glow-ocean);
}

.page-about .about-hero__caption {
  display: block;
  margin-top: 14px;
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--c-muted);
  text-transform: uppercase;
}

.page-about .about-stats {
  position: relative;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px 12px;
  margin-top: clamp(38px, 6vw, 66px);
  list-style: none;
  padding-left: var(--edge);
  padding-right: var(--edge);
}

.page-about .about-stats__item {
  padding: 14px 0 14px 16px;
  border-left: 2px solid rgba(111, 198, 250, .3);
}

.page-about .about-stats__item:nth-child(2) {
  border-left-color: rgba(255, 106, 61, .5);
}

.page-about .about-stats__num {
  display: block;
  font-size: clamp(28px, 5vw, 42px);
  font-weight: 700;
  line-height: 1;
  color: var(--c-text);
}

.page-about .about-stats__item:nth-child(2) .about-stats__num {
  color: var(--c-coral);
}

.page-about .about-stats__unit {
  margin-left: 3px;
  font-size: .48em;
  color: var(--c-ocean-soft);
}

.page-about .about-stats__label {
  display: block;
  margin-top: 8px;
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--c-muted);
}

/* ---------- 品牌自述 ---------- */
.page-about .about-origin__inner {
  display: grid;
  gap: clamp(28px, 4vw, 52px);
}

.page-about .about-origin__text p {
  max-width: 38em;
  margin: 0 0 18px;
  line-height: 1.8;
  color: var(--c-text);
}

.page-about .about-origin__text p:last-child {
  margin-bottom: 0;
}

.page-about .about-origin__card {
  align-self: start;
  padding: 26px 24px;
  border-radius: var(--r-lg);
  border: 1px solid rgba(182, 255, 60, .28);
  background: linear-gradient(148deg, rgba(11, 42, 71, .9), rgba(5, 18, 31, .96));
  box-shadow: var(--glow-lime);
}

.page-about .about-origin__card-k {
  margin: 0 0 12px;
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--c-lime);
}

.page-about .about-origin__card-t {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--c-text);
}

/* ---------- 版本时间轴 ---------- */
.page-about .about-timeline {
  display: flex;
  gap: 22px;
  margin-top: 12px;
  padding: 8px 0 24px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.page-about .about-timeline__item {
  position: relative;
  flex: 0 0 min(276px, 78vw);
  scroll-snap-align: start;
  padding: 42px 20px 24px;
  border-radius: var(--r-md);
  border: 1px solid rgba(159, 182, 201, .16);
  background: var(--grad-card);
}

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  top: 16px;
  left: 20px;
  right: -22px;
  height: 2px;
  background: linear-gradient(90deg, rgba(255, 106, 61, .72), rgba(18, 135, 224, .2));
}

.page-about .about-timeline__item:last-child::before {
  right: 20px;
  background: linear-gradient(90deg, rgba(255, 106, 61, .9), rgba(182, 255, 60, .5));
}

.page-about .about-timeline__dot {
  position: absolute;
  top: 10px;
  left: 20px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--c-coral);
  box-shadow: 0 0 0 4px rgba(255, 106, 61, .16), var(--glow-coral);
}

.page-about .about-timeline__item--now {
  border-color: rgba(255, 106, 61, .48);
  box-shadow: var(--glow-coral);
}

.page-about .about-timeline__item--now .about-timeline__dot {
  background: var(--c-lime);
  box-shadow: 0 0 0 4px rgba(182, 255, 60, .18), var(--glow-lime);
}

.page-about .about-timeline__ver {
  margin: 0 0 10px;
  font-size: 20px;
  font-weight: 700;
  letter-spacing: .08em;
  color: var(--c-coral);
}

.page-about .about-timeline__item--now .about-timeline__ver {
  color: var(--c-lime);
}

.page-about .about-timeline__title {
  margin: 0 0 10px;
  font-size: 19px;
  line-height: 1.4;
  color: var(--c-text);
}

.page-about .about-timeline__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--c-muted);
}

/* ---------- 数据核对流程 ---------- */
.page-about .about-flow {
  display: grid;
  gap: clamp(28px, 4vw, 52px);
  margin-top: 34px;
}

.page-about .about-flow__media {
  margin: 0;
  align-self: start;
}

.page-about .about-flow__media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--r-lg);
  border: 1px solid rgba(18, 135, 224, .28);
  box-shadow: var(--shadow-float), var(--glow-ocean);
}

.page-about .about-flow__caption {
  margin-top: 12px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--c-muted);
}

.page-about .about-flow__steps {
  display: grid;
  gap: 22px;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: flow;
}

.page-about .about-flow__step {
  position: relative;
  padding: 20px 20px 20px 66px;
  border-radius: var(--r-md);
  background: linear-gradient(140deg, rgba(11, 42, 71, .86), rgba(5, 18, 31, .94));
  border: 1px solid rgba(111, 198, 250, .18);
}

.page-about .about-flow__idx {
  position: absolute;
  top: 20px;
  left: 18px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  font-size: 13px;
  color: var(--c-deep);
  background: var(--grad-heat);
}

.page-about .about-flow__name {
  margin: 0 0 8px;
  font-size: 18px;
  color: var(--c-text);
}

.page-about .about-flow__step p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--c-muted);
}

/* ---------- 团队与分工 ---------- */
.page-about .about-team-section .filter-bar {
  margin-top: 26px;
}

.page-about .about-team__list {
  display: grid;
  gap: 18px;
  margin-top: 18px;
}

.page-about .about-team__row {
  padding: 22px 22px 20px;
  border-radius: var(--r-md);
  background: linear-gradient(150deg, rgba(11, 42, 71, .82), rgba(5, 18, 31, .95));
  border: 1px solid rgba(159, 182, 201, .16);
  transition: border-color .3s ease, box-shadow .3s ease, transform .3s ease;
}

.page-about .about-team__row:hover {
  transform: translateY(-4px);
  border-color: rgba(111, 198, 250, .42);
  box-shadow: var(--glow-ocean);
}

.page-about .about-team__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 10px;
}

.page-about .about-team__name {
  margin: 0;
  font-size: 20px;
  color: var(--c-text);
}

.page-about .about-team__count {
  font-size: 17px;
  font-weight: 700;
  color: var(--c-coral);
}

.page-about .about-team__desc {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--c-muted);
}

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

/* ---------- 合作与资质 ---------- */
.page-about .about-paper {
  position: relative;
  overflow: hidden;
  padding: clamp(28px, 5vw, 58px);
  border-radius: var(--r-lg);
  background: var(--grad-paper);
  color: var(--c-ink);
  box-shadow: var(--shadow-float);
}

.page-about .about-paper::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(0deg, rgba(12, 27, 40, .05) 0 1px, transparent 1px 26px);
  opacity: .55;
}

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

.page-about .about-paper .index-label {
  color: rgba(12, 27, 40, .56);
}

.page-about .about-paper .section-title {
  color: var(--c-ink);
  transform: skewX(-2deg);
  transform-origin: left bottom;
}

.page-about .about-paper__lede {
  max-width: 40em;
  margin: 16px 0 0;
  font-size: 15.5px;
  line-height: 1.8;
  color: rgba(12, 27, 40, .74);
}

.page-about .about-paper__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin-top: clamp(26px, 4vw, 42px);
  background: rgba(12, 27, 40, .16);
  border: 1px solid rgba(12, 27, 40, .16);
  border-radius: var(--r-sm);
  overflow: hidden;
}

.page-about .about-paper__cell {
  padding: 20px 18px;
  background: rgba(255, 253, 247, .78);
}

.page-about .about-paper__num {
  display: block;
  font-size: clamp(26px, 4vw, 36px);
  font-weight: 700;
  line-height: 1;
  color: var(--c-coral);
}

.page-about .about-paper__label {
  display: block;
  margin-top: 10px;
  font-size: 13.5px;
  line-height: 1.7;
  color: rgba(12, 27, 40, .76);
}

.page-about .about-paper__list {
  position: relative;
  z-index: 1;
  margin: clamp(24px, 3.6vw, 36px) 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}

.page-about .about-paper__list li {
  position: relative;
  padding-left: 26px;
  font-size: 15px;
  line-height: 1.78;
  color: rgba(12, 27, 40, .84);
}

.page-about .about-paper__list li::before {
  content: "";
  position: absolute;
  top: 11px;
  left: 2px;
  width: 10px;
  height: 10px;
  border-radius: 2px;
  background: var(--c-coral);
  transform: rotate(45deg);
}

.page-about .about-partner__figure {
  margin: clamp(28px, 4vw, 44px) 0 0;
}

.page-about .about-partner__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--r-lg);
  border: 1px solid rgba(182, 255, 60, .2);
  box-shadow: var(--shadow-float);
}

.page-about .about-partner__figure-cap {
  margin-top: 12px;
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--c-muted);
}

/* ---------- 承诺 ---------- */
.page-about .about-promise__grid {
  display: grid;
  gap: 20px;
  margin-top: 30px;
}

.page-about .about-promise__card {
  display: flex;
  flex-direction: column;
  padding: 26px 22px 24px;
  border-radius: var(--r-md);
  border-top: 3px solid var(--c-coral);
  background: linear-gradient(158deg, rgba(11, 42, 71, .9), rgba(5, 18, 31, .96));
  box-shadow: var(--shadow-float);
  transition: transform .34s ease, box-shadow .34s ease;
}

.page-about .about-promise__card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-float), var(--glow-coral);
}

.page-about .about-promise__idx {
  display: block;
  margin-bottom: 12px;
  font-size: 13px;
  letter-spacing: .22em;
  color: var(--c-ocean-soft);
}

.page-about .about-promise__name {
  margin: 0 0 12px;
  font-size: 22px;
  color: var(--c-text);
}

.page-about .about-promise__card p {
  margin: 0 0 22px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--c-muted);
}

.page-about .about-promise__link {
  margin-top: auto;
  align-self: flex-start;
}

.page-about .about-promise__foot {
  margin: 34px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--c-muted);
}

.page-about .about-promise__foot-link {
  color: var(--c-coral);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 106, 61, .5);
}

.page-about .about-promise__foot-link:hover {
  color: var(--c-amber);
  border-bottom-color: var(--c-amber);
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-about .about-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .about-team__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
  }

  .page-about .about-team__row:nth-child(even) {
    transform: translateY(26px);
  }

  .page-about .about-team__row:nth-child(even):hover {
    transform: translateY(20px);
  }

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

  .page-about .about-promise__card:nth-child(2) {
    transform: translateY(34px);
  }

  .page-about .about-promise__card:nth-child(2):hover {
    transform: translateY(26px);
  }
}

@media (min-width: 960px) {
  .page-about .about-hero__inner {
    grid-template-columns: minmax(0, 1.04fr) minmax(0, .96fr);
  }

  .page-about .about-hero__figure {
    transform: translateY(18px);
  }

  .page-about .about-origin__inner {
    grid-template-columns: minmax(0, 1fr) minmax(0, 300px);
    align-items: start;
  }

  .page-about .about-flow {
    grid-template-columns: minmax(0, .88fr) minmax(0, 1.12fr);
    align-items: start;
  }

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

  .page-about .about-timeline {
    gap: 26px;
    padding-bottom: 30px;
  }
}

@media (min-width: 1180px) {
  .page-about .about-timeline__item {
    flex: 0 0 300px;
  }
}

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