.page-about {
  --about-cut: 16px;
  --about-gap: clamp(18px, 2.6vw, 30px);
  --about-ring: inset 0 0 0 1px var(--wire);
  display: block;
  color: var(--white);
  background: var(--void);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding-top: clamp(20px, 3vw, 36px);
  padding-bottom: clamp(36px, 5vw, 72px);
  background:
    radial-gradient(120% 90% at 88% 8%, rgba(108, 77, 255, .18) 0%, transparent 58%),
    radial-gradient(90% 70% at 6% 96%, rgba(77, 225, 255, .09) 0%, transparent 60%),
    var(--void);
  overflow: hidden;
}

.page-about .about-hero__ghost {
  position: absolute;
  top: -0.06em;
  right: -0.02em;
  font-family: var(--font-mono);
  font-size: clamp(82px, 17vw, 236px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: .01em;
  color: transparent;
  -webkit-text-stroke: 1px rgba(108, 77, 255, .2);
  pointer-events: none;
  user-select: none;
  z-index: 0;
}

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

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 54px);
  align-items: start;
  margin-top: clamp(22px, 3vw, 40px);
}

@media (min-width: 1000px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: clamp(34px, 5vw, 78px);
  }
}

.page-about .about-hero__kicker {
  margin: 0 0 16px;
  font-size: 12px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-about .about-hero__title {
  margin: 0;
  max-width: 16ch;
  line-height: 1.04;
  letter-spacing: .005em;
}

.page-about .about-hero__lede {
  margin: clamp(18px, 2.4vw, 26px) 0 0;
  max-width: 58ch;
  color: var(--steel);
}

.page-about .about-hero__points {
  list-style: none;
  margin: clamp(20px, 2.6vw, 28px) 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--steel);
}

.page-about .about-hero__points li {
  display: inline-flex;
  align-items: center;
  gap: 9px;
}

.page-about .about-hero__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--violet);
  box-shadow: 0 0 0 3px rgba(108, 77, 255, .18);
}

.page-about .about-hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(24px, 3vw, 34px);
}

.page-about .about-hero__figure {
  position: relative;
  margin: 0;
  background: var(--chart);
  box-shadow: var(--about-ring);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 30px), calc(100% - 30px) 100%, 0 100%);
  overflow: hidden;
}

.page-about .about-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  opacity: .8;
  filter: saturate(1.08) contrast(1.05);
}

.page-about .about-hero__figure::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(200deg, rgba(5, 9, 20, 0) 36%, rgba(5, 9, 20, .88) 100%);
  pointer-events: none;
}

.page-about .about-hero__cap {
  position: absolute;
  left: 18px;
  bottom: 14px;
  z-index: 2;
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--steel);
}

.page-about .about-hero__strip {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin-top: clamp(30px, 4vw, 52px);
  background: var(--wire);
  box-shadow: var(--about-ring);
}

@media (min-width: 720px) {
  .page-about .about-hero__strip {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.page-about .about-hero__stat {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: clamp(16px, 2.2vw, 24px);
  background: var(--chart);
  transition: background-color .18s ease;
}

.page-about .about-hero__stat:hover {
  background: var(--hull);
}

.page-about .about-hero__num {
  font-family: var(--font-display);
  font-size: clamp(28px, 3.4vw, 44px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.01em;
  color: var(--white);
  transition: color .18s ease;
}

.page-about .about-hero__stat:hover .about-hero__num {
  color: var(--orange);
}

.page-about .about-hero__key {
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--steel);
}

/* ---------- 星轨时间轴 ---------- */
.page-about .about-track {
  position: relative;
}

.page-about .about-rail {
  position: relative;
  margin-top: clamp(30px, 4vw, 48px);
}

.page-about .about-rail__line {
  position: absolute;
  left: 0;
  top: 5px;
  width: 100%;
  height: 1px;
  display: none;
  background: linear-gradient(90deg, var(--violet) 0%, var(--violet) 44%, var(--cyan) 100%);
  opacity: .55;
  transform: rotate(2deg);
  transform-origin: 0 50%;
  pointer-events: none;
}

@media (min-width: 900px) {
  .page-about .about-rail__line {
    display: block;
  }
}

.page-about .about-rail__list {
  position: relative;
  z-index: 1;
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 3vw, 30px);
}

@media (min-width: 900px) {
  .page-about .about-rail__list {
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 20px;
  }
}

.page-about .about-rail__node {
  position: relative;
  padding-top: 24px;
  transition: transform .18s ease;
}

.page-about .about-rail__node::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--hull);
  box-shadow: inset 0 0 0 1px var(--violet);
  transition: background-color .18s ease, box-shadow .18s ease;
}

.page-about .about-rail__node:hover::before {
  background: var(--orange);
  box-shadow: 0 0 0 5px rgba(255, 107, 44, .16);
}

@media (min-width: 900px) {
  .page-about .about-rail__node:nth-child(2) { transform: translateY(10px); }
  .page-about .about-rail__node:nth-child(3) { transform: translateY(20px); }
  .page-about .about-rail__node:nth-child(4) { transform: translateY(30px); }
  .page-about .about-rail__node:nth-child(5) { transform: translateY(40px); }
}

.page-about .about-rail__no {
  margin: 0 0 10px;
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--cyan);
}

.page-about .about-rail__title {
  margin: 0 0 8px;
  font-size: 17px;
  line-height: 1.4;
  color: var(--white);
  transition: color .18s ease;
}

.page-about .about-rail__node:hover .about-rail__title {
  color: var(--orange);
}

.page-about .about-rail__text {
  margin: 0;
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.75;
  color: var(--steel);
}

.page-about .about-track__figure {
  margin: clamp(38px, 5vw, 68px) 0 0;
}

/* ---------- 数据覆盖 ---------- */
.page-about .about-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin-top: clamp(28px, 3.6vw, 46px);
}

@media (min-width: 720px) {
  .page-about .about-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }
  .page-about .about-card--a,
  .page-about .about-card--d {
    grid-column: span 2;
  }
}

@media (min-width: 1024px) {
  .page-about .about-grid {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: 16px;
  }
  .page-about .about-card--a { grid-column: span 5; }
  .page-about .about-card--b { grid-column: span 7; }
  .page-about .about-card--c { grid-column: span 4; }
  .page-about .about-card--d { grid-column: span 8; }
  .page-about .about-card--e { grid-column: span 7; }
  .page-about .about-card--f { grid-column: span 5; }
}

.page-about .about-card {
  position: relative;
  padding: clamp(18px, 2.3vw, 26px);
  background: linear-gradient(155deg, var(--hull) 0%, var(--chart) 72%);
  box-shadow: var(--about-ring);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--about-cut)), calc(100% - var(--about-cut)) 100%, 0 100%);
  transition: box-shadow .18s ease, background-color .18s ease;
}

.page-about .about-card:hover {
  box-shadow: inset 0 0 0 1px var(--orange);
}

.page-about .about-card__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 16px;
}

.page-about .about-card__no {
  margin: 0;
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--steel);
}

.page-about .about-card__value {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(34px, 4.4vw, 54px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.012em;
  color: var(--white);
  transition: color .18s ease;
}

.page-about .about-card:hover .about-card__value {
  color: var(--cyan);
}

.page-about .about-card__unit {
  margin: 10px 0 0;
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--orange);
}

.page-about .about-card__desc {
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--steel);
}

.page-about .about-cadence {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
  margin-top: clamp(24px, 3vw, 36px);
  padding: clamp(18px, 2.4vw, 26px);
  background: var(--chart);
  border-left: 3px solid var(--orange);
}

@media (min-width: 760px) {
  .page-about .about-cadence {
    grid-template-columns: 130px minmax(0, 1fr);
    align-items: baseline;
    gap: 24px;
  }
}

.page-about .about-cadence__label {
  margin: 0;
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--orange);
}

.page-about .about-cadence__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--white);
}

/* ---------- 团队 ---------- */
.page-about .about-team__layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 3.4vw, 44px);
  margin-top: clamp(28px, 3.6vw, 46px);
}

@media (min-width: 1000px) {
  .page-about .about-team__layout {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: start;
  }
}

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

.page-about .about-team__cards {
  display: flex;
  flex-direction: column;
}

.page-about .about-team__card {
  display: grid;
  grid-template-columns: 62px minmax(0, 1fr);
  gap: 0 16px;
  padding: 20px 0;
  border-top: 1px solid var(--wire);
  transition: border-color .18s ease, padding-left .18s ease;
}

.page-about .about-team__card:last-child {
  border-bottom: 1px solid var(--wire);
}

.page-about .about-team__card:hover {
  border-color: var(--orange);
  padding-left: 8px;
}

.page-about .about-team__no {
  margin: 0;
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--violet);
}

.page-about .about-team__card:hover .about-team__no {
  color: var(--orange);
}

.page-about .about-team__body h3 {
  margin: 0 0 8px;
  font-size: 18px;
  line-height: 1.35;
  color: var(--white);
}

.page-about .about-team__desc {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--steel);
}

/* ---------- 合作与资质 ---------- */
.page-about .about-partners__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 3.4vw, 48px);
}

@media (min-width: 900px) {
  .page-about .about-partners__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: start;
  }
}

.page-about .about-partners__facts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(158px, 1fr));
  gap: 1px;
  background: var(--wire);
  box-shadow: var(--about-ring);
}

.page-about .about-fact {
  padding: clamp(18px, 2.2vw, 24px);
  background: var(--chart);
  transition: background-color .18s ease;
}

.page-about .about-fact:hover {
  background: var(--hull);
}

.page-about .about-fact__value {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(30px, 3.6vw, 42px);
  font-weight: 700;
  line-height: 1;
  color: var(--white);
  transition: color .18s ease;
}

.page-about .about-fact:hover .about-fact__value {
  color: var(--mint);
}

.page-about .about-fact__key {
  margin: 10px 0 0;
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--steel);
}

.page-about .about-fact__desc {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--steel);
}

/* ---------- 为什么选择 ---------- */
.page-about .about-why__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
  margin-top: clamp(28px, 3.6vw, 46px);
}

@media (min-width: 880px) {
  .page-about .about-why__grid {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    align-items: stretch;
  }
  .page-about .about-why__item:nth-child(1) { grid-column: span 5; }
  .page-about .about-why__item:nth-child(2) { grid-column: span 4; }
  .page-about .about-why__item:nth-child(3) { grid-column: span 3; }
}

.page-about .about-why__item {
  display: flex;
  flex-direction: column;
}

.page-about .about-why__item .tile__text {
  flex: 1 1 auto;
}

.page-about .about-why__link {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color .16s ease, color .16s ease;
}

.page-about .about-why__link:hover {
  color: var(--orange);
  border-bottom-color: var(--orange);
}

.page-about .about-why__link:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

/* ---------- 收尾 ---------- */
.page-about .about-cta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-top: clamp(34px, 4.4vw, 58px);
  padding: clamp(22px, 3vw, 34px);
  background: linear-gradient(118deg, var(--hull) 0%, var(--chart) 78%);
  border-left: 3px solid var(--orange);
}

.page-about .about-cta__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: clamp(19px, 2vw, 24px);
  font-weight: 700;
  line-height: 1.35;
  color: var(--white);
}

.page-about .about-cta__desc {
  margin: 0;
  max-width: 54ch;
  font-size: 14px;
  line-height: 1.72;
  color: var(--steel);
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-about .about-note {
  margin: clamp(22px, 2.6vw, 32px) 0 0;
  font-size: 11px;
  letter-spacing: .08em;
  line-height: 1.9;
  color: var(--steel);
}

.page-about .about-top {
  margin: clamp(24px, 3vw, 40px) auto 0;
  display: block;
}

.page-about .about-top:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

@media (max-width: 420px) {
  .page-about .about-team__card {
    grid-template-columns: minmax(0, 1fr);
    gap: 8px;
  }
  .page-about .about-hero__points {
    gap: 8px 16px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-card,
  .page-about .about-team__card,
  .page-about .about-hero__stat,
  .page-about .about-fact,
  .page-about .about-why__link,
  .page-about .about-rail__node {
    transition: none;
  }
}