.page-about {
  --ab-rule: rgba(122, 91, 30, 0.42);
  --ab-gold-soft: rgba(242, 196, 107, 0.13);
  --ab-panel: #0B2233;
  background: var(--night);
  color: var(--paper);
  overflow-x: hidden;
}

/* ---------- 顶部上下文 ---------- */
.page-about .about-topbar {
  max-width: 1320px;
  margin-inline: auto;
  padding: 18px var(--edge) 0;
}

.page-about .breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--mist);
}

.page-about .breadcrumbs li + li::before {
  content: "/";
  margin-right: 6px;
  color: var(--line);
}

.page-about .breadcrumbs a {
  color: var(--mist);
  text-decoration: none;
  transition: color var(--t-fast);
}

.page-about .breadcrumbs a:hover,
.page-about .breadcrumbs a:focus-visible {
  color: var(--cyan);
}

.page-about .breadcrumbs [aria-current="page"] {
  color: var(--gold);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: clamp(24px, 4.5vw, 56px) 0 0;
  background:
    radial-gradient(90% 62% at 84% 0%, rgba(224, 138, 60, 0.15), transparent 62%),
    radial-gradient(70% 55% at 4% 18%, rgba(79, 227, 208, 0.09), transparent 66%);
}

.page-about .about-hero__inner {
  display: grid;
  gap: 30px;
}

.page-about .about-hero h1 {
  margin: 14px 0 18px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(30px, 5.2vw, 60px);
  line-height: 1.14;
  letter-spacing: 0.005em;
  text-wrap: balance;
}

.page-about .about-hero__lede {
  max-width: 34em;
  margin: 0;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.85;
  color: rgba(244, 241, 232, 0.8);
}

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

.page-about .about-hero__art {
  position: relative;
  padding: 18px 16px 14px;
  background: linear-gradient(180deg, rgba(14, 59, 51, 0.62), rgba(6, 19, 33, 0.94));
  clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, var(--cut) 100%, 0 calc(100% - var(--cut)));
}

.page-about .about-skyline {
  display: block;
  width: 100%;
  height: auto;
}

.page-about .about-hero__cap {
  margin: 12px 0 0;
  font-size: 12px;
  line-height: 1.7;
  letter-spacing: 0.04em;
  color: var(--mist);
}

.page-about .about-hero__banner {
  max-width: 1320px;
  margin: clamp(26px, 4vw, 48px) auto 0;
  padding-inline: var(--edge);
}

/* ---------- 区块节奏 ---------- */
.page-about .about-sec {
  padding: clamp(46px, 6.5vw, 92px) var(--edge);
}

.page-about .about-sec > .container {
  max-width: 1320px;
}

.page-about .about-head {
  margin-bottom: clamp(22px, 3vw, 36px);
}

.page-about .about-head h2 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(23px, 3.4vw, 38px);
  line-height: 1.28;
  color: var(--paper);
  text-wrap: balance;
}

.page-about .about-head__sub {
  max-width: 36em;
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(244, 241, 232, 0.66);
}

.page-about .about-head--inline {
  margin-bottom: 26px;
}

/* ---------- 由来 ---------- */
.page-about .about-origin__grid {
  display: grid;
  gap: 26px;
}

.page-about .about-origin__prose p {
  margin: 0 0 18px;
  font-size: 16px;
  line-height: 1.85;
  color: rgba(244, 241, 232, 0.88);
}

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

.page-about .about-side {
  border-left: 2px solid var(--line);
  padding: 4px 0 4px 16px;
}

.page-about .about-side__label {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--gold);
}

.page-about .about-side__text {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.85;
  color: var(--mist);
}

.page-about .about-stats {
  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(--ab-rule);
  border: 1px solid var(--ab-rule);
}

.page-about .about-stats li {
  padding: 18px 16px;
  background: var(--night);
}

.page-about .about-stats b {
  display: block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(20px, 2.8vw, 28px);
  line-height: 1.1;
  color: var(--gold);
}

.page-about .about-stats span {
  display: block;
  margin-top: 8px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--mist);
}

/* ---------- 流程 ---------- */
.page-about .about-flow {
  display: grid;
  gap: 20px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-flow__step {
  position: relative;
  padding: 22px 18px 24px;
  background: linear-gradient(160deg, rgba(11, 34, 51, 0.95), rgba(6, 19, 33, 0.95));
  clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, var(--cut) 100%, 0 calc(100% - var(--cut)));
  transition: transform var(--t-fast), background var(--t-fast);
}

.page-about .about-flow__step:hover {
  transform: translateX(4px);
  background: linear-gradient(160deg, rgba(14, 59, 51, 0.95), rgba(6, 19, 33, 0.95));
}

.page-about .about-flow__num {
  display: inline-block;
  padding: 3px 9px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--night);
  background: var(--gold);
}

.page-about .about-flow__title {
  margin: 14px 0 10px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 19px;
  color: var(--paper);
}

.page-about .about-flow__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: rgba(244, 241, 232, 0.76);
}

.page-about .about-process__figure {
  margin: clamp(26px, 3.5vw, 42px) 0 0;
}

/* ---------- 团队 ---------- */
.page-about .about-team__layout {
  display: grid;
  gap: 26px;
}

.page-about .about-team__grid {
  display: grid;
  gap: 18px;
}

.page-about .about-team__card {
  padding: 22px 18px;
  border-top: 2px solid var(--line);
  background: rgba(14, 59, 51, 0.55);
  clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, var(--cut) 100%, 0 calc(100% - var(--cut)));
  transition: background var(--t-mid), border-color var(--t-fast), transform var(--t-fast);
}

.page-about .about-team__card:hover,
.page-about .about-team__card:focus-within {
  background: rgba(14, 59, 51, 0.92);
  border-top-color: var(--cyan);
  transform: translateY(-3px);
}

.page-about .about-team__code {
  display: inline-block;
  padding: 2px 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--gold);
  border: 1px solid var(--ab-rule);
}

.page-about .about-team__name {
  margin: 12px 0 4px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 19px;
  color: var(--paper);
}

.page-about .about-team__count {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--amber);
}

.page-about .about-team__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: rgba(244, 241, 232, 0.76);
}

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

/* ---------- 时间轴 ---------- */
.page-about .about-timeline {
  position: relative;
  margin: 0;
  padding: 0 0 0 22px;
  list-style: none;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  top: 6px;
  bottom: 6px;
  left: 5px;
  width: 1px;
  background: linear-gradient(180deg, var(--amber), var(--line) 40%, rgba(122, 91, 30, 0.15));
}

.page-about .about-timeline__item {
  position: relative;
  padding-bottom: 22px;
}

.page-about .about-timeline__mark {
  position: absolute;
  top: 18px;
  left: -22px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.page-about .about-timeline__dot {
  display: block;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--night);
  border: 2px solid var(--gold);
  box-shadow: 0 0 0 3px rgba(242, 196, 107, 0.12);
}

.page-about .about-timeline__year {
  position: absolute;
  top: 22px;
  left: 22px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--gold);
  white-space: nowrap;
}

.page-about .about-timeline__acc {
  margin-left: 0;
  padding-top: 44px;
}

.page-about .about-timeline__label {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 18px;
  color: var(--paper);
  text-align: left;
}

.page-about .about-timeline__acc .acc__panel p {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: rgba(244, 241, 232, 0.76);
}

/* ---------- 覆盖与合规 ---------- */
.page-about .about-reach__panel {
  padding: clamp(24px, 3.6vw, 44px);
  background:
    linear-gradient(150deg, rgba(14, 59, 51, 0.72), rgba(6, 19, 33, 0.96) 68%);
  clip-path: polygon(0 0, calc(100% - 26px) 0, 100% 26px, 100% 100%, 26px 100%, 0 calc(100% - 26px));
}

.page-about .about-reach__grid {
  display: grid;
  gap: 26px;
}

.page-about .about-reach__prose p {
  margin: 0 0 16px;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(244, 241, 232, 0.84);
}

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

.page-about .about-reach__links {
  display: grid;
  gap: 1px;
  background: var(--ab-rule);
  border: 1px solid var(--ab-rule);
}

.page-about .about-reach__link {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 14px 16px;
  background: var(--night);
  text-decoration: none;
  transition: background var(--t-fast), padding-left var(--t-fast);
}

.page-about .about-reach__link:hover,
.page-about .about-reach__link:focus-visible {
  background: rgba(79, 227, 208, 0.1);
  padding-left: 22px;
}

.page-about .about-reach__link-k {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--gold);
}

.page-about .about-reach__link-v {
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- 桌面布局 ---------- */
@media (min-width: 760px) {
  .page-about .about-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .about-flow {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px;
  }

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

  .page-about .about-origin__grid {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 0.85fr);
    gap: 40px;
  }

  .page-about .about-reach__grid {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 0.9fr);
    gap: 36px;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__inner {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, 0.94fr);
    gap: clamp(30px, 4vw, 60px);
    align-items: end;
  }

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

  .page-about .about-flow__step:not(:last-child)::after {
    content: "";
    position: absolute;
    top: 30px;
    right: -16px;
    width: 18px;
    height: 2px;
    background: linear-gradient(90deg, var(--amber), rgba(224, 138, 60, 0));
  }

  .page-about .about-timeline {
    padding-left: 0;
    padding-top: 8px;
  }

  .page-about .about-timeline::before {
    left: 0;
    top: 14px;
  }

  .page-about .about-timeline__item {
    display: grid;
    grid-template-columns: 156px minmax(0, 1fr);
    gap: 30px;
    padding-bottom: 26px;
    padding-left: 26px;
  }

  .page-about .about-timeline__mark {
    position: relative;
    top: 0;
    left: 0;
    align-self: start;
    padding-top: 16px;
  }

  .page-about .about-timeline__year {
    position: static;
    display: block;
    font-size: 13px;
    margin-left: 10px;
  }

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

  .page-about .about-timeline__acc {
    padding-top: 8px;
  }

  .page-about .about-team__layout {
    grid-template-columns: minmax(0, 1fr) minmax(0, 300px);
    gap: 36px;
    align-items: start;
  }
}

@media (min-width: 1080px) {
  .page-about .about-team__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-flow__step,
  .page-about .about-team__card,
  .page-about .about-reach__link {
    transition: none;
  }

  .page-about .about-flow__step:hover,
  .page-about .about-team__card:hover {
    transform: none;
  }
}
<<<END>>>