.page-about {
  --about-num-lh: 1;
  --about-hero-min: 520px;
}

.page-about .sec {
  position: relative;
  padding-block: clamp(56px, 8vw, 104px);
}

.page-about .crumbs-sep {
  margin-inline: .4em;
  color: var(--mist);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
  min-height: var(--about-hero-min);
  padding-block: clamp(48px, 9vw, 96px) clamp(40px, 6vw, 72px);
}
.page-about .hero-media {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.page-about .hero-media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .38;
}
.page-about .about-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    radial-gradient(120% 90% at 82% 12%, rgba(139, 92, 255, .28) 0%, transparent 58%),
    linear-gradient(180deg, rgba(6, 7, 12, .52) 0%, rgba(6, 7, 12, .88) 58%, var(--ink-000) 100%);
}
.page-about .hero-body {
  position: relative;
  z-index: 2;
}
.page-about .hero-body h1 {
  margin: .35em 0 .5em;
  max-width: 15em;
  background: linear-gradient(102deg, var(--gold-hi) 0%, var(--gold) 46%, var(--gold-deep) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.page-about .hero-lede {
  max-width: 34em;
  margin: 0;
  color: var(--ivory);
  font-size: clamp(15px, 1.6vw, 18px);
  line-height: 1.8;
}
.page-about .hero-facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: clamp(28px, 4vw, 44px) 0 0;
  padding: 0;
  list-style: none;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}
.page-about .hero-facts li {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 18px;
  background: rgba(14, 15, 24, .72);
  backdrop-filter: blur(8px);
}
.page-about .hero-facts .num {
  font-family: var(--font-mono);
  font-size: clamp(26px, 4vw, 40px);
  line-height: var(--about-num-lh);
  font-weight: 700;
  color: var(--gold-hi);
  letter-spacing: -.02em;
}
.page-about .hero-facts .lab {
  color: var(--mist);
  font-size: 13px;
  letter-spacing: .04em;
}

/* ---------- 团队切换 ---------- */
.page-about .team-switch {
  position: relative;
  margin-top: clamp(32px, 5vw, 56px);
}
.page-about .team-radio {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  border: 0;
}
.page-about .team-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 20px;
}
.page-about .team-tab {
  display: inline-flex;
  align-items: baseline;
  gap: 10px;
  padding: 10px 18px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--glass);
  color: var(--mist);
  font-size: 14px;
  cursor: pointer;
  transition: color .25s var(--ease), border-color .25s var(--ease), background .25s var(--ease);
}
.page-about .team-tab .tab-idx {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--violet);
}
.page-about .team-tab:hover {
  color: var(--ivory);
  border-color: var(--line-violet);
}
.page-about #team-ops:checked ~ .team-tabs label[for="team-ops"],
.page-about #team-fit:checked ~ .team-tabs label[for="team-fit"],
.page-about #team-care:checked ~ .team-tabs label[for="team-care"] {
  background: linear-gradient(120deg, rgba(229, 185, 78, .2), rgba(229, 185, 78, .06));
  border-color: var(--line-gold);
  color: var(--gold-hi);
}
.page-about #team-ops:focus-visible ~ .team-tabs label[for="team-ops"],
.page-about #team-fit:focus-visible ~ .team-tabs label[for="team-fit"],
.page-about #team-care:focus-visible ~ .team-tabs label[for="team-care"] {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}
.page-about .team-panels {
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
  background: linear-gradient(150deg, var(--glass-2), rgba(14, 15, 24, .5));
  padding: clamp(22px, 3.4vw, 40px);
}
.page-about .team-panel {
  display: none;
  max-width: 40em;
}
.page-about .team-panel h3 {
  margin: 0 0 .6em;
  font-size: clamp(19px, 2.2vw, 25px);
  color: var(--gold-hi);
}
.page-about .team-panel p {
  margin: 0 0 .9em;
  color: var(--ivory);
  line-height: 1.85;
}
.page-about .team-panel p:last-child {
  margin-bottom: 0;
  color: var(--mist);
  font-size: 15px;
}
.page-about #team-ops:checked ~ .team-panels [data-panel="ops"],
.page-about #team-fit:checked ~ .team-panels [data-panel="fit"],
.page-about #team-care:checked ~ .team-panels [data-panel="care"] {
  display: block;
  animation: about-fade .4s var(--ease) both;
}
@keyframes about-fade {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: none; }
}

/* ---------- 历程时间线 ---------- */
.page-about .sec-story .lede {
  max-width: 34em;
  margin: .8em 0 0;
  color: var(--mist);
  line-height: 1.8;
}
.page-about .story-layout {
  margin-top: clamp(32px, 5vw, 56px);
}
.page-about .timeline {
  position: relative;
  margin: 0;
  padding: 0 0 0 34px;
  list-style: none;
}
.page-about .timeline::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: linear-gradient(180deg, var(--cyan), var(--gold) 48%, var(--violet));
  opacity: .55;
}
.page-about .tl-node {
  position: relative;
  padding-bottom: clamp(26px, 3.6vw, 42px);
}
.page-about .tl-node:last-child {
  padding-bottom: 0;
}
.page-about .tl-dot {
  position: absolute;
  left: -34px;
  top: 8px;
  width: 15px;
  height: 15px;
  border-radius: 50%;
  background: var(--ink-100);
  border: 1px solid var(--line-gold);
  box-shadow: 0 0 0 4px rgba(229, 185, 78, .09);
  transition: box-shadow .3s var(--ease), background .3s var(--ease);
}
.page-about .tl-node--live .tl-dot {
  background: var(--gold);
  border-color: var(--gold-hi);
  box-shadow: 0 0 0 5px rgba(229, 185, 78, .22), 0 0 22px rgba(229, 185, 78, .5);
}
.page-about .tl-node:hover .tl-dot,
.page-about .tl-node:focus-within .tl-dot {
  background: var(--cyan);
  border-color: var(--cyan);
  box-shadow: 0 0 0 6px rgba(53, 224, 206, .2), 0 0 20px rgba(53, 224, 206, .45);
}
.page-about .tl-era {
  margin: 0 0 .35em;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .22em;
  color: var(--violet);
  text-transform: uppercase;
}
.page-about .tl-body h3 {
  margin: 0 0 .5em;
  font-size: clamp(18px, 2vw, 23px);
  color: var(--ivory);
}
.page-about .tl-body > p {
  max-width: 36em;
  margin: 0 0 .5em;
  line-height: 1.8;
  color: var(--mist);
}
.page-about .tl-note {
  max-width: 36em;
  margin: 0;
  padding-left: 14px;
  border-left: 1px solid var(--line-cyan);
  color: rgba(166, 172, 185, .72);
  font-size: 14px;
  line-height: 1.75;
  transition: color .3s var(--ease), border-color .3s var(--ease);
}
.page-about .tl-node:hover .tl-note,
.page-about .tl-node:focus-within .tl-note {
  color: var(--ivory);
  border-color: var(--cyan);
}
.page-about .story-figure {
  margin: 30px 0 0;
}

/* ---------- 服务标准 ---------- */
.page-about .std-list {
  margin: clamp(24px, 4vw, 40px) 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
}
.page-about .std-item {
  display: grid;
  gap: 6px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}
.page-about .std-item dt {
  display: flex;
  align-items: baseline;
  gap: 12px;
  font-size: clamp(16px, 1.8vw, 19px);
  font-weight: 600;
  color: var(--gold-hi);
}
.page-about .std-idx {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--cyan);
}
.page-about .std-item dd {
  margin: 0;
  max-width: 40em;
  line-height: 1.8;
  color: var(--ivory);
}

/* ---------- 引述 ---------- */
.page-about .creed {
  position: relative;
  margin: clamp(24px, 4vw, 40px) 0 0;
  padding: clamp(24px, 3vw, 34px);
  border: 1px solid var(--line-gold);
  border-radius: var(--radius-l);
  background: linear-gradient(150deg, rgba(229, 185, 78, .12), rgba(14, 15, 24, .72));
  box-shadow: var(--lift);
  overflow: hidden;
}
.page-about .creed::after {
  content: "";
  position: absolute;
  inset: -40% -30% auto auto;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(139, 92, 255, .28), transparent 68%);
  pointer-events: none;
}
.page-about .creed-mark {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 54px;
  line-height: .6;
  color: var(--gold);
  opacity: .7;
}
.page-about .creed p {
  position: relative;
  margin: 14px 0 0;
  color: var(--ivory);
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.9;
}
.page-about .creed-src {
  margin-top: 18px;
  font-size: 12px;
  letter-spacing: .28em;
  color: var(--mist);
}

/* ---------- CN 通道 ---------- */
.page-about .sec-cn {
  padding-block: clamp(56px, 8vw, 104px);
}
.page-about .cn-lead .h-section {
  max-width: 20em;
}
.page-about .cn-lede {
  max-width: 34em;
  margin: 1em 0 0;
  color: rgba(245, 242, 234, .86);
  line-height: 1.85;
}
.page-about .cn-points {
  margin: clamp(28px, 4vw, 44px) 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 14px;
}
.page-about .cn-point {
  padding: 20px 22px;
  border: 1px solid rgba(248, 227, 174, .22);
  border-radius: var(--radius);
  background: rgba(6, 7, 12, .42);
  backdrop-filter: blur(6px);
  transition: transform .3s var(--ease), border-color .3s var(--ease);
}
.page-about .cn-point:hover {
  transform: translateY(-4px);
  border-color: var(--gold-hi);
}
.page-about .cn-idx {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--gold-hi);
}
.page-about .cn-point h3 {
  margin: .45em 0 .4em;
  font-size: clamp(17px, 1.9vw, 21px);
  color: var(--ivory);
}
.page-about .cn-point p {
  margin: 0;
  color: rgba(245, 242, 234, .82);
  font-size: 15px;
  line-height: 1.8;
}

/* ---------- 生态 ---------- */
.page-about .eco-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-top: clamp(26px, 4vw, 42px);
}
.page-about .eco-card {
  padding: clamp(20px, 2.8vw, 30px);
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
  background: linear-gradient(155deg, var(--glass-2), rgba(14, 15, 24, .62));
  transition: transform .3s var(--ease), border-color .3s var(--ease);
}
.page-about .eco-card:hover {
  transform: translateY(-4px);
  border-color: var(--line-gold);
}
.page-about .eco-card .plate {
  display: inline-block;
  margin: 0 0 14px;
}
.page-about .eco-card h3 {
  margin: 0 0 .55em;
  font-size: clamp(18px, 2vw, 22px);
  color: var(--ivory);
}
.page-about .eco-card p {
  margin: 0;
  color: var(--mist);
  line-height: 1.85;
}
.page-about .eco-card--wide {
  background: linear-gradient(140deg, rgba(139, 92, 255, .16), rgba(14, 15, 24, .68));
  border-color: var(--line-violet);
}

/* ---------- 结尾动作 ---------- */
.page-about .sec-next {
  border-top: 1px solid var(--line);
}
.page-about .next-inner {
  display: grid;
  gap: 24px;
}
.page-about .next-copy p {
  max-width: 34em;
  margin: .9em 0 0;
  color: var(--mist);
  line-height: 1.8;
}
.page-about .next-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-content: start;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-about .hero-facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .page-about .cn-points {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-about .eco-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 960px) {
  .page-about .story-layout {
    display: grid;
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
    gap: clamp(32px, 5vw, 72px);
    align-items: start;
  }
  .page-about .story-figure {
    position: sticky;
    top: 44px;
    margin-top: 6px;
  }
  .page-about .eco-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-about .eco-card--wide {
    grid-column: span 2;
  }
  .page-about .next-inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }
  .page-about .next-actions {
    justify-content: flex-end;
  }
  .page-about .cn-lead {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, .9fr);
    gap: clamp(24px, 4vw, 56px);
    align-items: end;
  }
}

@media (min-width: 1240px) {
  .page-about .std-item {
    grid-template-columns: minmax(180px, .32fr) minmax(0, 1fr);
    gap: 24px;
    align-items: baseline;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .eco-card,
  .page-about .cn-point,
  .page-about .tl-dot,
  .page-about .tl-note {
    transition: none;
  }
  .page-about #team-ops:checked ~ .team-panels [data-panel="ops"],
  .page-about #team-fit:checked ~ .team-panels [data-panel="fit"],
  .page-about #team-care:checked ~ .team-panels [data-panel="care"] {
    animation: none;
  }
  .page-about .eco-card:hover,
  .page-about .cn-point:hover {
    transform: none;
  }
}
</main>