*,*::before,*::after{box-sizing:border-box}
:root{
  --violet:#6514ff;
  --magenta:#bf00ff;
  --ink:#1c1726;
  --ink2:#241d33;
  --line:rgba(191,0,255,.3);
  --edge:rgba(255,255,255,.16);
  --fg:#f3edff;
  --muted:#c2b5e2;
  --wrap:1080px;
  --r:10px;
}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  padding:0 0 118px;
  background:var(--ink);
  color:var(--fg);
  font:400 17px/1.7 "Barlow","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:-22%;
  z-index:-1;
  pointer-events:none;
  background:
    repeating-linear-gradient(45deg,rgba(101,20,255,.18) 0 2px,transparent 2px 28px),
    radial-gradient(46% 42% at 88% 2%,rgba(191,0,255,.42),transparent 72%),
    radial-gradient(52% 46% at 2% 98%,rgba(101,20,255,.4),transparent 72%);
  animation:drift 26s linear infinite;
}
@keyframes drift{to{transform:translate3d(-28px,28px,0)}}
img{max-width:100%}
a{color:inherit}

.skip{
  position:absolute;
  left:12px;
  top:-64px;
  z-index:120;
  padding:10px 16px;
  border-radius:var(--r);
  background:var(--violet);
  color:#fff;
  text-decoration:none;
}
.skip:focus{top:12px}

/* ── 头图 ── */
.hero{
  max-width:var(--wrap);
  margin:0 auto;
  padding:26px 24px 6px;
  min-height:45vh;
  display:grid;
  grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr);
  align-items:center;
  gap:34px;
}
.hero-copy{order:2;text-align:right;min-width:0}
.hero-art-wrap{order:1;min-width:0}
.hero-art{
  width:100%;
  max-width:250px;
  height:auto;
  border-radius:var(--r);
  filter:drop-shadow(0 20px 44px rgba(101,20,255,.6));
}
.hero-brand{
  margin:0 0 12px;
  font:600 15px/1.2 "Barlow Condensed","Barlow",sans-serif;
  letter-spacing:.26em;
  color:var(--magenta);
}
h1{
  margin:0;
  font:700 clamp(34px,7vw,64px)/1.03 "Barlow Condensed","Barlow",system-ui,sans-serif;
  letter-spacing:.01em;
}
h1::after{
  content:"";
  display:block;
  width:76px;
  height:8px;
  margin:16px 0 0 auto;
  border-radius:4px;
  background:linear-gradient(90deg,var(--magenta),var(--violet));
}

/* ── 底部胶囊导航 ── */
.dock{
  position:fixed;
  inset:auto 0 0 0;
  z-index:80;
  display:flex;
  align-items:center;
  gap:10px;
  padding:10px 14px calc(10px + env(safe-area-inset-bottom));
  background:rgba(28,23,38,.9);
  backdrop-filter:blur(14px);
  border-top:1px solid var(--line);
}
.dock-brand{
  flex:0 0 auto;
  display:inline-flex;
  align-items:center;
  gap:8px;
  min-height:44px;
  padding:8px 4px;
  color:var(--fg);
  text-decoration:none;
  font:600 17px/1 "Barlow Condensed","Barlow",sans-serif;
  letter-spacing:.06em;
}
.brand-mark{width:26px;height:26px;display:block}
.dock-brand span{
  max-width:6em;
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
}
.dock-pills{
  flex:1 1 auto;
  min-width:0;
  display:flex;
  gap:8px;
  margin:0;
  padding:2px;
  list-style:none;
  overflow-x:auto;
  scroll-snap-type:x proximity;
  scrollbar-width:none;
}
.dock-pills::-webkit-scrollbar{display:none}
.pill{
  display:inline-flex;
  align-items:center;
  min-height:42px;
  padding:8px 17px;
  border-radius:999px;
  border:1px solid rgba(191,0,255,.44);
  background:rgba(191,0,255,.14);
  color:var(--fg);
  font-size:16px;
  white-space:nowrap;
  text-decoration:none;
  scroll-snap-align:start;
  transition:background .24s,color .24s,transform .24s;
}
.pill:hover,.pill:focus-visible,.pill.is-on{
  background:var(--magenta);
  border-color:var(--magenta);
  color:#fff;
  transform:translateY(-2px);
}
.pill-cta{
  flex:0 0 auto;
  background:var(--violet);
  border-color:var(--violet);
  font-weight:600;
}

/* ── 正文 ── */
main{
  max-width:var(--wrap);
  margin:0 auto;
  padding:30px 24px 8px;
  counter-reset:sec;
}
main > section{
  counter-increment:sec;
  padding:56px 0;
  border-top:2px solid var(--line);
  scroll-margin-top:24px;
}
main > section:first-child{border-top:0}
.deck{
  counter-increment:none;
  display:grid;
  grid-template-columns:260px minmax(0,1fr);
  gap:26px 48px;
  align-items:start;
}
.deck > aside{grid-column:1;grid-row:1 / span 2}
.deck > :not(aside){grid-column:2}
.rail{
  position:sticky;
  top:16px;
  padding:18px 18px 22px;
  border:1px solid var(--edge);
  border-radius:var(--r);
  background:linear-gradient(160deg,rgba(101,20,255,.28),rgba(255,255,255,.05));
  backdrop-filter:blur(12px);
}
.rail h2{margin:4px 0 0;font-size:23px;line-height:1.2}
.rail-list{list-style:none;margin:12px 0 0;padding:0}
.rail-list li{margin:0}
.rail-list a{
  display:flex;
  align-items:center;
  min-height:40px;
  padding:6px 0;
  color:var(--fg);
  font-size:16px;
  text-decoration:none;
  border-bottom:1px dashed rgba(255,255,255,.15);
  transition:color .2s,padding-left .2s;
}
.rail-list a:hover{color:var(--magenta);padding-left:6px}
.deck-fig{
  margin:0;
  overflow:hidden;
  border:1px solid var(--edge);
  border-radius:var(--r);
  background:rgba(255,255,255,.05);
  backdrop-filter:blur(10px);
}
.deck-fig img{
  display:block;
  width:100%;
  height:auto;
  aspect-ratio:16/9;
  object-fit:cover;
  transition:transform .28s;
}
.deck-fig:hover img{transform:scale(1.03)}
.deck-txt p{margin:0;max-width:60ch;color:var(--muted)}

main p{margin:0 0 18px;max-width:68ch}
main ul,main ol{margin:0 0 20px;padding-left:1.3em}
main li{margin:0 0 10px}
main h2{
  margin:0 0 16px;
  font:700 clamp(26px,3.7vw,38px)/1.16 "Barlow Condensed","Barlow",system-ui,sans-serif;
  letter-spacing:.01em;
}
main > section:not(.deck) h2::before{
  content:counter(sec,decimal-leading-zero);
  display:inline-block;
  margin-right:.5em;
  padding:.14em .5em;
  border-radius:6px;
  background:rgba(191,0,255,.2);
  color:var(--magenta);
  font-size:.55em;
  vertical-align:.24em;
}
main h3{
  margin:0 0 12px;
  font:700 22px/1.35 "Barlow Condensed","Barlow",system-ui,sans-serif;
}
main small{
  display:inline-block;
  margin:0 0 6px;
  font:600 14px/1.4 "Barlow Condensed","Barlow",sans-serif;
  letter-spacing:.2em;
  color:var(--magenta);
}
main a{color:#dbcbff;text-decoration-color:var(--magenta);text-underline-offset:3px}
main a:hover{color:#fff;background:rgba(191,0,255,.24)}
main figure{margin:0 0 20px}
main blockquote{
  margin:0 0 20px;
  padding:14px 20px;
  border-left:6px solid var(--violet);
  border-radius:0 var(--r) var(--r) 0;
  background:rgba(101,20,255,.16);
}

/* ── 页脚 ── */
footer{
  max-width:var(--wrap);
  margin:64px auto 0;
  padding:0 24px 36px;
}
.cta-block{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:32px 28px;
  border:1px solid rgba(255,255,255,.3);
  border-radius:var(--r);
  background:linear-gradient(120deg,var(--violet),var(--magenta));
}
.cta-line{
  margin:0;
  font:700 clamp(26px,5vw,44px)/1.06 "Barlow Condensed","Barlow",sans-serif;
  color:#fff;
}
.cta-btn{
  display:inline-flex;
  align-items:center;
  min-height:46px;
  padding:10px 24px;
  border-radius:999px;
  background:var(--ink);
  color:#fff;
  font-weight:600;
  text-decoration:none;
  transition:transform .24s,background .24s;
}
.cta-btn:hover{transform:translateY(-3px);background:#000}
.foot-cols{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:32px;
  margin:36px 0 26px;
}
.foot-addr{
  font-style:normal;
  padding:16px 18px;
  border:1px solid var(--edge);
  border-radius:var(--r);
  background:rgba(255,255,255,.05);
  backdrop-filter:blur(10px);
}
.foot-addr span{display:block}
.foot-addr span:first-child{font:700 20px/1.35 "Barlow Condensed","Barlow",sans-serif}
.foot-addr span + span{color:var(--muted);font-size:15px;word-break:break-all}
.foot-cols nav dl{margin:0}
.foot-cols nav dt{
  margin-bottom:8px;
  font:600 14px/1.2 "Barlow Condensed","Barlow",sans-serif;
  letter-spacing:.22em;
  color:var(--magenta);
}
.foot-cols nav dd{margin:0}
.foot-cols a{
  display:inline-flex;
  align-items:center;
  min-height:40px;
  padding:6px 0;
  color:var(--fg);
  text-decoration:none;
}
.foot-cols a:hover{color:var(--magenta)}
.foot-links{list-style:none;margin:0;padding:0}
.foot-links li{margin:0}
.foot-base{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding-top:18px;
  border-top:1px solid var(--edge);
  color:var(--muted);
  font-size:15px;
}
.foot-base .copy{margin:0}
.foot-base ul{display:flex;gap:20px;list-style:none;margin:0;padding:0}
.foot-base a{
  display:inline-flex;
  align-items:center;
  min-height:40px;
  color:var(--muted);
  text-decoration:none;
}
.foot-base a:hover{color:var(--magenta)}

/* ── 动效 ── */
.js .reveal{opacity:0;transform:translateY(16px);transition:opacity .5s ease,transform .5s ease}
.js .reveal.in{opacity:1;transform:none}

@media (max-width:860px){
  .deck{grid-template-columns:minmax(0,1fr);gap:26px}
  .deck > aside,.deck > :not(aside){grid-column:1;grid-row:auto}
  .rail{position:static}
  .foot-cols{grid-template-columns:minmax(0,1fr);gap:24px}
}
@media (max-width:620px){
  body{padding-bottom:104px}
  .hero{
    grid-template-columns:88px minmax(0,1fr);
    gap:16px;
    min-height:0;
    padding:20px 16px 4px;
  }
  .hero-art{max-width:88px}
  .hero-art-wrap{order:1}
  .hero-copy{order:2;text-align:right}
  h1::after{width:56px;margin-top:12px}
  main{padding:24px 16px 8px}
  main > section{padding:40px 0}
  .dock{padding:8px 10px calc(8px + env(safe-area-inset-bottom))}
  .dock-brand span{display:none}
  footer{padding:0 16px 28px;margin-top:48px}
  .foot-base{flex-direction:column;align-items:flex-start}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  body::before{animation:none}
  .js .reveal{opacity:1;transform:none;transition:none}
  .pill,.cta-btn,.deck-fig img,.rail-list a{transition:none}
}

button[aria-expanded]{min-width:44px;min-height:44px}