.page-about {
  --about-step: clamp(0px, 3.2vw, 60px);
  --about-glow: 0 0 18px rgba(108, 74, 182, .45);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding-top: clamp(22px, 4vw, 48px);
}

.page-about .about-hero__inner {
  display: grid;
  gap: clamp(26px, 4.5vw, 54px);
  align-items: start;
}

.page-about .about-hero__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.95rem, 4.5vw, 3.1rem);
  line-height: 1.18;
  letter-spacing: .05em;
  color: var(--star);
  margin: 12px 0 0;
  max-width: 22ch;
}

.page-about .about-hero__lead {
  font-family: var(--font-body);
  font-size: 1.02rem;
  line-height: 1.9;
  color: var(--satellite);
  margin: 20px 0 0;
  max-width: 62ch;
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.page-about .about-hero__panel {
  border: 1px solid var(--line);
  border-left: 2px solid var(--nebula);
  border-radius: var(--r);
  padding: 20px 20px 18px;
  background:
    linear-gradient(158deg, rgba(108, 74, 182, .28), rgba(11, 27, 58, 0) 62%),
    var(--surface);
  box-shadow: 0 18px 40px -28px rgba(5, 11, 28, .95);
}

.page-about .about-hero__panelcap {
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--nebula-lite);
  margin: 0;
}

.page-about .about-facts {
  margin: 16px 0 0;
  display: grid;
  gap: 0;
}

.page-about .about-facts__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding: 11px 0;
  border-bottom: 1px dashed var(--line-soft);
}

.page-about .about-facts__row:last-child {
  border-bottom: 0;
}

.page-about .about-facts__key {
  font-size: .86rem;
  color: var(--satellite);
  margin: 0;
}

.page-about .about-facts__val {
  font-family: var(--font-mono);
  font-size: 1.32rem;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--galaxy);
  margin: 0;
  white-space: nowrap;
}

.page-about .about-facts__unit {
  font-size: .78rem;
  color: var(--satellite);
  margin-left: 4px;
}

.page-about .about-hero__panelfoot {
  margin: 14px 0 0;
  font-size: .82rem;
  line-height: 1.75;
  color: var(--satellite);
}

@media (min-width: 980px) {
  .page-about .about-hero__inner {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, .9fr);
  }
  .page-about .about-hero__panel {
    margin-top: 40px;
  }
}

/* ---------- 阶段列表 ---------- */
.page-about .about-origin .ab-section__head {
  max-width: 66ch;
}

.page-about .about-stages {
  list-style: none;
  margin: 34px 0 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.page-about .about-stages__item {
  display: grid;
  gap: 10px;
  padding: 24px 0 24px 18px;
  border-left: 1px solid var(--line-soft);
  position: relative;
}

.page-about .about-stages__item::before {
  content: "";
  position: absolute;
  left: -4px;
  top: 30px;
  width: 7px;
  height: 7px;
  background: var(--nebula);
  box-shadow: var(--about-glow);
}

.page-about .about-stages__item:last-child::before {
  background: var(--mint);
  box-shadow: 0 0 18px rgba(61, 220, 151, .5);
}

.page-about .about-stages__idx {
  font-family: var(--font-mono);
  font-size: .76rem;
  letter-spacing: .16em;
  color: var(--nebula-lite);
  text-transform: uppercase;
}

.page-about .about-stages__title {
  font-family: var(--font-display);
  font-size: 1.14rem;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--star);
  margin: 0;
}

.page-about .about-stages__text {
  margin: 9px 0 0;
  font-size: .95rem;
  line-height: 1.85;
  color: var(--satellite);
  max-width: 72ch;
}

.page-about .about-stages__meta {
  margin: 13px 0 0;
}

@media (min-width: 880px) {
  .page-about .about-stages__item {
    grid-template-columns: 132px minmax(0, 1fr);
    gap: 0 28px;
    padding-left: 26px;
  }
  .page-about .about-stages__idx {
    padding-top: 3px;
  }
}

/* ---------- 星轨时间线 ---------- */
.page-about .about-tracksec__figure {
  margin: 0 0 clamp(34px, 5vw, 56px);
}

.page-about .about-tracksec__figure .ab-media {
  border: 1px solid var(--line);
  border-radius: var(--r);
  background:
    radial-gradient(120% 140% at 12% 0%, rgba(108, 74, 182, .3), rgba(11, 27, 58, 0) 58%),
    var(--mist);
}

.page-about .about-tracksec .ab-section__head {
  max-width: 64ch;
}

.page-about .about-orbit {
  list-style: none;
  margin: 32px 0 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.page-about .about-orbit__node {
  display: grid;
  gap: 12px;
  padding-bottom: 26px;
}

.page-about .about-orbit__marker {
  display: flex;
  align-items: center;
  gap: 12px;
}

.page-about .about-orbit__dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  border: 2px solid var(--galaxy);
  background: var(--abyss);
  flex: none;
  transition: background var(--dur), box-shadow var(--dur);
}

.page-about .about-orbit__code {
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .16em;
  color: var(--galaxy);
}

.page-about .about-orbit__card {
  transition: transform var(--dur), border-color var(--dur);
}

.page-about .about-orbit__node:hover .about-orbit__dot,
.page-about .about-orbit__node:focus-within .about-orbit__dot {
  background: var(--galaxy);
  box-shadow: 0 0 16px rgba(242, 193, 78, .6);
}

.page-about .about-orbit__card .ab-card__body p {
  margin: 0;
  font-size: .94rem;
  line-height: 1.88;
  color: var(--satellite);
}

.page-about .about-orbit__effect {
  margin-top: 12px !important;
  padding-top: 12px;
  border-top: 1px dashed var(--line-soft);
  color: var(--star) !important;
  font-size: .88rem !important;
}

.page-about .about-orbit__effectkey {
  display: block;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .14em;
  color: var(--nebula-lite);
  text-transform: uppercase;
  margin-bottom: 5px;
}

@media (min-width: 900px) {
  .page-about .about-orbit {
    position: relative;
    padding-left: 8px;
  }
  .page-about .about-orbit::before {
    content: "";
    position: absolute;
    left: 13px;
    top: 10px;
    bottom: 46px;
    width: 1px;
    background: repeating-linear-gradient(
      to bottom,
      var(--line) 0 6px,
      transparent 6px 14px
    );
  }
  .page-about .about-orbit__node {
    grid-template-columns: 76px minmax(0, 1fr);
    gap: 26px;
    align-items: start;
    padding-bottom: 34px;
  }
  .page-about .about-orbit__marker {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
    padding-left: 4px;
  }
  .page-about .about-orbit__card {
    margin-left: calc(var(--about-step) * var(--stagger, 0));
  }
  .page-about .about-orbit__node:nth-child(1) { --stagger: 0; }
  .page-about .about-orbit__node:nth-child(2) { --stagger: .34; }
  .page-about .about-orbit__node:nth-child(3) { --stagger: .68; }
  .page-about .about-orbit__node:nth-child(4) { --stagger: 1; }
  .page-about .about-orbit__node:hover .about-orbit__card {
    transform: translateX(3px);
  }
}

/* ---------- 团队 ---------- */
.page-about .about-team .ab-section__head {
  max-width: 64ch;
}

.page-about .about-team__grid {
  margin-top: 34px;
  display: grid;
  gap: clamp(28px, 4vw, 52px);
  align-items: start;
}

.page-about .about-team__viz {
  display: grid;
  gap: 20px;
  justify-items: center;
}

.page-about .about-ring {
  position: relative;
  width: min(100%, 300px);
  aspect-ratio: 1 / 1;
  border-radius: 50%;
  background: conic-gradient(
    var(--nebula) 0deg 128.6deg,
    var(--nebula-lite) 128.6deg 231.4deg,
    var(--galaxy) 231.4deg 308.6deg,
    var(--mint) 308.6deg 360deg
  );
  box-shadow: 0 0 60px -22px rgba(108, 74, 182, .95);
}

.page-about .about-ring::after {
  content: "";
  position: absolute;
  inset: 24%;
  border-radius: 50%;
  background: var(--abyss);
  border: 1px solid var(--line);
}

.page-about .about-ring__core {
  position: absolute;
  inset: 24%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  z-index: 2;
  text-align: center;
}

.page-about .about-ring__num {
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 700;
  color: var(--galaxy);
  letter-spacing: .04em;
  line-height: 1;
}

.page-about .about-ring__unit {
  font-size: .72rem;
  letter-spacing: .14em;
  color: var(--satellite);
}

.page-about .about-team__figure {
  margin: 0;
  width: min(100%, 320px);
}

.page-about .about-team__figure .ab-media {
  border: 1px solid var(--line);
  border-radius: var(--r);
  background: var(--mist);
}

.page-about .about-team__legend {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-about .about-team__item {
  display: grid;
  grid-template-columns: 4px minmax(0, 1fr);
  gap: 16px;
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: var(--r);
  background: var(--surface);
  transition: border-color var(--dur), background var(--dur);
}

.page-about .about-team__item:hover {
  border-color: var(--nebula-lite);
}

.page-about .about-team__swatch {
  border-radius: 2px;
  width: 4px;
  align-self: stretch;
}

.page-about .about-team__swatch--a { background: var(--nebula); }
.page-about .about-team__swatch--b { background: var(--nebula-lite); }
.page-about .about-team__swatch--c { background: var(--galaxy); }
.page-about .about-team__swatch--d { background: var(--mint); }

.page-about .about-team__role {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--star);
  margin: 0;
}

.page-about .about-team__itemBody p {
  margin: 8px 0 0;
  font-size: .9rem;
  line-height: 1.85;
  color: var(--satellite);
}

@media (min-width: 940px) {
  .page-about .about-team__grid {
    grid-template-columns: minmax(0, .82fr) minmax(0, 1.18fr);
  }
  .page-about .about-team__viz {
    position: sticky;
    top: calc(var(--bar-h) + 24px);
  }
}

/* ---------- 校订流程 ---------- */
.page-about .about-check .ab-section__head {
  max-width: 64ch;
}

.page-about .about-flow {
  list-style: none;
  margin: 32px 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
  border-radius: var(--r);
  overflow: hidden;
}

.page-about .about-flow__item {
  background: var(--abyss);
  display: grid;
  grid-template-columns: 54px minmax(0, 1fr);
  gap: 0 16px;
  padding: 20px 18px;
  transition: background var(--dur);
}

.page-about .about-flow__item:hover {
  background: var(--mist);
}

.page-about .about-flow__no {
  font-family: var(--font-mono);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--galaxy);
  padding-top: 2px;
}

.page-about .about-flow__title {
  font-family: var(--font-display);
  font-size: 1.02rem;
  font-weight: 700;
  letter-spacing: .05em;
  color: var(--star);
  margin: 0;
}

.page-about .about-flow__body p {
  margin: 9px 0 0;
  font-size: .92rem;
  line-height: 1.86;
  color: var(--satellite);
  max-width: 74ch;
}

.page-about .about-check__figure {
  margin: clamp(30px, 4vw, 46px) 0 0;
}

.page-about .about-check__figure .ab-media {
  border: 1px solid var(--line);
  border-radius: var(--r);
  background:
    linear-gradient(120deg, rgba(108, 74, 182, .22), rgba(11, 27, 58, 0) 60%),
    var(--mist);
}

/* ---------- 合作生态 ---------- */
.page-about .about-partner .ab-section__head {
  max-width: 64ch;
}

.page-about .about-partner__grid {
  margin-top: 32px;
  display: grid;
  gap: 16px;
}

.page-about .about-partner__stat {
  border: 1px solid var(--line);
  border-top: 2px solid var(--galaxy);
  border-radius: var(--r);
  padding: 22px 20px;
  background:
    linear-gradient(180deg, rgba(242, 193, 78, .1), rgba(11, 27, 58, 0) 70%),
    var(--surface);
}

.page-about .about-partner__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(2.1rem, 5vw, 2.7rem);
  font-weight: 700;
  letter-spacing: .02em;
  color: var(--galaxy);
  line-height: 1;
}

.page-about .about-partner__plus {
  color: var(--galaxy-lite);
}

.page-about .about-partner__label {
  display: block;
  margin-top: 10px;
  font-size: .84rem;
  letter-spacing: .08em;
  color: var(--star);
}

.page-about .about-partner__note {
  margin: 10px 0 0;
  font-size: .86rem;
  line-height: 1.8;
  color: var(--satellite);
}

.page-about .about-partner__copy {
  border: 1px solid var(--line);
  border-left: 2px solid var(--nebula);
  border-radius: var(--r);
  padding: 22px 20px;
  background: var(--surface);
}

.page-about .about-partner__subtitle {
  font-family: var(--font-display);
  font-size: 1.04rem;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--star);
  margin: 0;
}

.page-about .about-partner__copy p {
  margin: 12px 0 0;
  font-size: .93rem;
  line-height: 1.88;
  color: var(--satellite);
}

.page-about .about-partner__link {
  margin-top: 16px;
}

@media (min-width: 900px) {
  .page-about .about-partner__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr) minmax(0, 1.7fr);
    align-items: start;
    gap: 18px;
  }
}

/* ---------- 服务半径 ---------- */
.page-about .about-reach .ab-section__head {
  max-width: 64ch;
}

.page-about .about-reach__grid {
  margin-top: 32px;
  display: grid;
  gap: 18px;
}

.page-about .about-reach__panel .ab-card__body p {
  margin: 0;
  font-size: .93rem;
  line-height: 1.9;
  color: var(--satellite);
}

@media (min-width: 880px) {
  .page-about .about-reach__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.25fr);
  }
}

/* ---------- 收束 ---------- */
.page-about .about-next {
  padding-bottom: clamp(80px, 12vw, 148px);
}

.page-about .about-next__inner {
  border-top: 1px dashed var(--line-soft);
  padding-top: clamp(34px, 5vw, 56px);
  max-width: 78ch;
}

.page-about .about-next__title {
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 2.6vw, 2rem);
  font-weight: 800;
  letter-spacing: .05em;
  color: var(--star);
  margin: 12px 0 0;
}

.page-about .about-next__lead {
  margin: 16px 0 0;
  font-size: .97rem;
  line-height: 1.9;
  color: var(--satellite);
}

.page-about .about-next__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-about .about-next .ab-dotline {
  margin-top: clamp(40px, 7vw, 76px);
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-orbit__card,
  .page-about .about-orbit__dot,
  .page-about .about-team__item,
  .page-about .about-flow__item {
    transition: none;
  }
  .page-about .about-orbit__node:hover .about-orbit__card {
    transform: none;
  }
}
</style>