.page-about{
  --about-rail:2.9rem;
  background:var(--ink-900);
  color:var(--cream);
  overflow-x:hidden;
}

.page-about .about-inner{
  width:min(calc(100% - 2rem), var(--shell));
  margin-inline:auto;
}

.page-about .eyebrow{
  color:var(--gold);
  margin:0;
}

.page-about .eyebrow-dark{
  color:var(--red);
}

.page-about .eyebrow-gold{
  color:var(--gold);
}

.page-about .about-crumbs{
  width:min(calc(100% - 2rem), var(--shell));
  margin-inline:auto;
  padding-block:1rem .2rem;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:.45rem;
  font-size:.8125rem;
  line-height:1.5;
  color:rgba(247,241,227,.66);
}

.page-about .about-crumbs .crumb{
  color:inherit;
  text-decoration:none;
}

.page-about .about-crumbs a.crumb:hover,
.page-about .about-crumbs a.crumb:focus-visible{
  color:var(--gold);
}

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

.page-about .about-crumb-sep{
  opacity:.55;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero{
  position:relative;
  padding-block:1.2rem 3rem;
  background:
    radial-gradient(120% 90% at 92% -14%, rgba(46,124,246,.2), transparent 62%),
    radial-gradient(92% 74% at 4% 0%, rgba(194,30,46,.18), transparent 64%),
    var(--ink-900);
  overflow:hidden;
}

.page-about .about-hero::before{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background:repeating-linear-gradient(180deg, rgba(247,241,227,.05) 0 1px, transparent 1px 6px);
  opacity:.55;
}

.page-about .about-hero > .about-inner{
  position:relative;
  z-index:1;
}

.page-about .about-hero-grid{
  display:grid;
  gap:2rem;
}

.page-about .about-hero h1{
  font-family:var(--font-display);
  font-weight:900;
  font-size:clamp(2rem, 5.6vw, 3.6rem);
  line-height:1.14;
  letter-spacing:-.02em;
  color:var(--cream);
  margin:.7rem 0 0;
  max-width:20ch;
}

.page-about .about-lead{
  margin:1.1rem 0 0;
  max-width:56ch;
  font-size:1.0625rem;
  line-height:1.85;
  color:rgba(247,241,227,.86);
}

.page-about .about-hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:.7rem;
  margin-top:1.5rem;
}

.page-about .about-readout{
  display:grid;
  grid-template-columns:repeat(2, minmax(0,1fr));
  gap:1px;
  margin:0;
  background:var(--line-gold);
  border:1px solid var(--line-gold);
  border-radius:var(--r-md);
  overflow:hidden;
}

.page-about .about-readout-item{
  background:var(--panel);
  padding:.85rem 1rem 1rem;
}

.page-about .about-readout-item dt{
  font-size:.75rem;
  letter-spacing:.05em;
  color:rgba(247,241,227,.7);
}

.page-about .about-readout-item dd{
  margin:.3rem 0 0;
  font-size:.9375rem;
  color:rgba(247,241,227,.9);
}

.page-about .about-readout-item .num{
  font-family:var(--font-mono);
  font-size:1.55rem;
  font-weight:600;
  letter-spacing:-.02em;
  color:var(--gold);
  margin-right:.15rem;
}

/* ---------- 品牌缘起 ---------- */
.page-about .about-origin{
  background:var(--paper);
  color:var(--slate);
  padding-block:0 3.2rem;
}

.page-about .about-origin::before{
  content:"";
  display:block;
  height:6px;
  background:linear-gradient(90deg, var(--red) 0 26%, var(--gold) 26% 62%, var(--blue) 62% 100%);
  margin-bottom:2.4rem;
}

.page-about .about-origin h2{
  font-family:var(--font-serif);
  font-weight:700;
  font-size:clamp(1.5rem, 3.4vw, 2.3rem);
  line-height:1.32;
  letter-spacing:.01em;
  color:var(--ink-900);
  margin:.55rem 0 0;
  max-width:22ch;
}

.page-about .about-origin-lead{
  margin:.95rem 0 0;
  max-width:62ch;
  font-size:1.0625rem;
  line-height:1.85;
  color:#33454c;
}

.page-about .about-banner{
  width:min(calc(100% - 2rem), var(--shell));
  margin:2rem auto 0;
  border-radius:var(--r-lg);
  overflow:hidden;
  border:1px solid rgba(38,50,56,.16);
  box-shadow:0 24px 46px -30px rgba(11,31,26,.9);
  background:var(--ink-800);
}

.page-about .about-banner img{
  display:block;
  width:100%;
  height:auto;
  object-fit:cover;
}

.page-about .about-banner .figure-caption{
  margin:0;
  padding:.7rem 1rem .8rem;
  font-size:.8125rem;
  line-height:1.6;
  color:rgba(247,241,227,.82);
  background:var(--ink-800);
}

.page-about .about-origin-body{
  display:grid;
  gap:1rem;
  margin-top:1.9rem;
}

.page-about .about-origin-body p{
  margin:0;
  font-size:1rem;
  line-height:1.9;
  color:#33454c;
}

/* ---------- 结构演进 ---------- */
.page-about .about-line{
  background:
    radial-gradient(90% 60% at 100% 0%, rgba(214,168,75,.13), transparent 62%),
    var(--ink-900);
  color:var(--cream);
  padding-block:3rem 3.4rem;
}

.page-about .about-line h2{
  font-family:var(--font-serif);
  font-weight:700;
  font-size:clamp(1.5rem, 3.4vw, 2.25rem);
  line-height:1.34;
  color:var(--cream);
  margin:.55rem 0 0;
  max-width:24ch;
}

.page-about .about-line-lead{
  margin:1rem 0 0;
  max-width:62ch;
  font-size:1rem;
  line-height:1.85;
  color:rgba(247,241,227,.82);
}

.page-about .about-line-figure{
  margin:1.9rem 0 2.2rem;
  border-radius:var(--r-md);
  overflow:hidden;
  border:1px solid var(--line-gold);
  background:var(--ink-800);
}

.page-about .about-line-figure img{
  display:block;
  width:100%;
  height:auto;
  object-fit:cover;
}

.page-about .about-stages{
  list-style:none;
  margin:0;
  padding:0;
  display:grid;
  gap:.15rem;
}

.page-about .about-stage{
  display:grid;
  grid-template-columns:var(--about-rail) minmax(0,1fr);
  gap:.9rem;
  align-items:start;
  padding-block:.75rem;
}

.page-about .about-node{
  width:var(--about-rail);
  height:var(--about-rail);
  display:grid;
  place-items:center;
  border-radius:50%;
  background:radial-gradient(circle at 34% 28%, #1d5b4b, var(--panel) 72%);
  border:1px solid var(--line-gold);
  box-shadow:0 0 0 4px rgba(214,168,75,.1);
  transition:border-color .2s ease, box-shadow .2s ease;
}

.page-about .about-node svg{
  width:1.45rem;
  height:1.45rem;
  fill:none;
  stroke:var(--gold);
  stroke-width:1.8;
  stroke-linecap:round;
  stroke-linejoin:round;
}

.page-about .about-stage-body{
  background:linear-gradient(160deg, rgba(23,71,59,.94), rgba(14,40,34,.94));
  border:1px solid var(--line-gold);
  border-radius:var(--r-md);
  padding:1rem 1.1rem 1.15rem;
  transition:border-color .2s ease, background .2s ease;
}

.page-about .about-stage:hover .about-stage-body,
.page-about .about-stage:focus-within .about-stage-body{
  border-color:rgba(230,59,46,.55);
}

.page-about .about-stage:hover .about-node,
.page-about .about-stage:focus-within .about-node{
  border-color:var(--red-signal);
  box-shadow:0 0 0 4px rgba(230,59,46,.18), 0 0 18px rgba(214,168,75,.32);
}

.page-about .about-stage-tag{
  display:inline-flex;
  align-items:center;
  gap:.4rem;
  margin:0;
  font-size:.75rem;
  letter-spacing:.1em;
  color:var(--gold);
}

.page-about .about-stage-tag .num{
  font-family:var(--font-mono);
  font-size:.9rem;
  letter-spacing:0;
}

.page-about .about-stage-body h3{
  font-family:var(--font-display);
  font-weight:700;
  font-size:1.0625rem;
  line-height:1.5;
  color:var(--cream);
  margin:.35rem 0 .45rem;
}

.page-about .about-stage-body p{
  margin:0;
  font-size:.9375rem;
  line-height:1.78;
  color:rgba(247,241,227,.8);
}

/* ---------- 内容流程 ---------- */
.page-about .about-method{
  background:var(--paper-2);
  color:var(--slate);
  padding-block:3rem 3.2rem;
}

.page-about .about-method-grid{
  display:grid;
  gap:1.9rem;
}

.page-about .about-method h2{
  font-family:var(--font-serif);
  font-weight:700;
  font-size:clamp(1.45rem, 3.2vw, 2.05rem);
  line-height:1.38;
  color:var(--ink-900);
  margin:.55rem 0 .9rem;
  max-width:20ch;
}

.page-about .about-method-head p{
  margin:0;
  font-size:1rem;
  line-height:1.85;
  color:#3d4f57;
}

.page-about .about-method-list{
  list-style:none;
  margin:0;
  padding:0;
  display:grid;
  gap:.9rem;
}

.page-about .about-method-list li{
  display:grid;
  grid-template-columns:2.1rem minmax(0,1fr);
  gap:.85rem;
  padding:.95rem 1rem 1.05rem;
  background:#FFFFFF;
  border:1px solid rgba(38,50,56,.13);
  border-left:3px solid var(--red);
  border-radius:var(--r-md);
  box-shadow:0 12px 24px -22px rgba(11,31,26,.85);
}

.page-about .about-method-key{
  font-family:var(--font-mono);
  font-size:.95rem;
  font-weight:600;
  letter-spacing:-.02em;
  color:var(--red);
  padding-top:.1rem;
}

.page-about .about-method-list h3{
  font-family:var(--font-display);
  font-size:1rem;
  font-weight:700;
  color:var(--ink-900);
  margin:0 0 .35rem;
}

.page-about .about-method-list p{
  margin:0;
  font-size:.9375rem;
  line-height:1.8;
  color:#3d4f57;
}

/* ---------- 团队 ---------- */
.page-about .about-team{
  background:
    radial-gradient(90% 80% at 10% 0%, rgba(214,168,75,.17), transparent 64%),
    var(--wine);
  color:var(--cream);
  padding-block:3.2rem;
}

.page-about .about-team h2{
  font-family:var(--font-serif);
  font-weight:700;
  font-size:clamp(1.5rem, 3.4vw, 2.2rem);
  line-height:1.34;
  color:var(--cream);
  margin:.55rem 0 0;
}

.page-about .about-team-lead{
  margin:1rem 0 0;
  max-width:60ch;
  font-size:1rem;
  line-height:1.85;
  color:rgba(247,241,227,.88);
}

.page-about .about-team-grid{
  display:grid;
  gap:1rem;
  margin-top:2rem;
}

.page-about .about-team-card{
  background:rgba(11,31,26,.34);
  border:1px solid rgba(214,168,75,.36);
  border-radius:var(--r-lg);
  padding:1.2rem 1.2rem 1.35rem;
}

.page-about .about-team-num{
  font-family:var(--font-mono);
  font-size:2.3rem;
  font-weight:600;
  line-height:1;
  color:var(--gold);
  margin:0;
}

.page-about .about-team-card h3{
  font-family:var(--font-display);
  font-size:1.0625rem;
  font-weight:700;
  color:#FFFFFF;
  margin:.6rem 0 .5rem;
}

.page-about .about-team-card p{
  margin:0;
  font-size:.9375rem;
  line-height:1.8;
  color:rgba(247,241,227,.84);
}

/* ---------- 合作与记录 ---------- */
.page-about .about-network{
  background:var(--ink-900);
  color:var(--cream);
  padding-block:3.2rem;
}

.page-about .about-network-grid{
  display:grid;
  gap:2rem;
}

.page-about .about-network h2{
  font-family:var(--font-serif);
  font-weight:700;
  font-size:clamp(1.45rem, 3.3vw, 2.1rem);
  line-height:1.36;
  color:var(--cream);
  margin:.55rem 0 0;
  max-width:22ch;
}

.page-about .about-network-lead{
  margin:1rem 0 0;
  max-width:58ch;
  font-size:1rem;
  line-height:1.85;
  color:rgba(247,241,227,.82);
}

.page-about .about-network-figure{
  margin:1.6rem 0 0;
  border-radius:var(--r-md);
  overflow:hidden;
  border:1px solid rgba(46,124,246,.3);
  background:var(--ink-800);
}

.page-about .about-network-figure img{
  display:block;
  width:100%;
  height:auto;
  object-fit:cover;
}

.page-about .about-nodes{
  display:grid;
  gap:.85rem;
  align-content:start;
}

.page-about .about-node-chip{
  display:grid;
  grid-template-columns:auto minmax(0,1fr);
  gap:.85rem;
  align-items:start;
  padding:.9rem 1rem 1rem;
  border-radius:var(--r-md);
  border:1px solid rgba(46,124,246,.32);
  background:linear-gradient(140deg, rgba(23,71,59,.85), rgba(11,31,26,.88));
  transition:border-color .2s ease, background .2s ease, box-shadow .2s ease;
}

.page-about .about-node-chip:hover,
.page-about .about-node-chip:focus{
  border-color:var(--blue);
  box-shadow:0 0 0 2px rgba(46,124,246,.42);
  background:linear-gradient(140deg, rgba(29,88,73,.96), rgba(14,40,34,.96));
}

.page-about .about-node-chip:focus-visible{
  outline:2px solid var(--blue);
  outline-offset:2px;
}

.page-about .about-node-value{
  font-family:var(--font-mono);
  font-size:1.35rem;
  font-weight:600;
  line-height:1.1;
  color:var(--gold);
  padding-top:.1rem;
}

.page-about .about-node-value small{
  font-family:var(--font-body);
  font-size:.75rem;
  font-weight:400;
  color:rgba(247,241,227,.7);
  margin-left:.15rem;
}

.page-about .about-node-text{
  margin:0;
  font-size:.9375rem;
  line-height:1.72;
  color:rgba(247,241,227,.8);
}

.page-about .about-node-text strong{
  display:block;
  font-size:.95rem;
  font-weight:700;
  color:var(--cream);
  margin-bottom:.2rem;
}

/* ---------- 下一步 ---------- */
.page-about .about-next{
  background:var(--paper);
  color:var(--slate);
  padding-block:3rem 3.4rem;
}

.page-about .about-next h2{
  font-family:var(--font-serif);
  font-weight:700;
  font-size:clamp(1.4rem, 3vw, 1.95rem);
  line-height:1.38;
  color:var(--ink-900);
  margin:0 0 1.4rem;
}

.page-about .about-next-grid{
  display:grid;
  gap:.9rem;
}

.page-about .about-next-card{
  display:block;
  text-decoration:none;
  color:inherit;
  padding:1.15rem 1.2rem 1.3rem;
  background:#FFFFFF;
  border:1px solid rgba(38,50,56,.14);
  border-radius:var(--r-md);
  transition:transform .2s ease, border-color .2s ease, box-shadow .2s ease;
}

.page-about .about-next-card:hover{
  transform:translateY(-3px);
  border-color:var(--red);
  box-shadow:0 20px 32px -26px rgba(11,31,26,.9);
}

.page-about .about-next-card:focus-visible{
  outline:2px solid var(--blue);
  outline-offset:2px;
  border-color:var(--red);
}

.page-about .about-next-kicker{
  display:block;
  font-family:var(--font-mono);
  font-size:.8rem;
  font-weight:600;
  letter-spacing:.08em;
  color:var(--red);
  margin-bottom:.45rem;
}

.page-about .about-next-card h3{
  font-family:var(--font-display);
  font-size:1.0625rem;
  font-weight:700;
  color:var(--ink-900);
  margin:0 0 .45rem;
}

.page-about .about-next-card p{
  margin:0;
  font-size:.9375rem;
  line-height:1.78;
  color:#3d4f57;
}

.page-about .about-next-note{
  margin:1.5rem 0 0;
  font-size:.9375rem;
  line-height:1.8;
  color:#42555c;
}

.page-about .about-next-note a{
  color:var(--link);
  text-decoration:underline;
  text-underline-offset:2px;
}

.page-about .about-next-note a:hover{
  color:var(--red);
}

/* ---------- 响应式 ---------- */
@media (min-width:721px){
  .page-about .about-inner{
    width:min(calc(100% - 3.2rem), var(--shell));
  }

  .page-about .about-crumbs{
    width:min(calc(100% - 3.2rem), var(--shell));
  }

  .page-about .about-banner{
    width:min(calc(100% - 3.2rem), var(--shell));
  }

  .page-about .about-team-grid{
    grid-template-columns:repeat(3, minmax(0,1fr));
    gap:1.2rem;
  }

  .page-about .about-next-grid{
    grid-template-columns:repeat(3, minmax(0,1fr));
    gap:1.1rem;
  }
}

@media (min-width:861px){
  .page-about{
    --about-rail:3.1rem;
  }

  .page-about .about-hero{
    padding-block:1.6rem 3.6rem;
  }

  .page-about .about-hero-grid{
    grid-template-columns:minmax(0,1.55fr) minmax(0,.85fr);
    gap:3rem;
    align-items:end;
  }

  .page-about .about-origin-body{
    grid-template-columns:repeat(2, minmax(0,1fr));
    gap:2.4rem;
  }

  .page-about .about-stage:nth-child(2){
    padding-left:2.2rem;
  }

  .page-about .about-stage:nth-child(3){
    padding-left:4.4rem;
  }

  .page-about .about-stage:nth-child(4){
    padding-left:6.6rem;
  }

  .page-about .about-stage:nth-child(5){
    padding-left:8.8rem;
  }

  .page-about .about-method-grid{
    grid-template-columns:minmax(0,.82fr) minmax(0,1.18fr);
    gap:3rem;
    align-items:start;
  }

  .page-about .about-network-grid{
    grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);
    gap:3rem;
    align-items:start;
  }
}

@media (prefers-reduced-motion: reduce){
  .page-about .about-node,
  .page-about .about-stage-body,
  .page-about .about-node-chip,
  .page-about .about-next-card{
    transition:none;
  }

  .page-about .about-next-card:hover{
    transform:none;
  }
}
<<<PAGE_CSS_END>>>