:root{
  --ink:#0d0d0d;
  --ink-2:#150022;
  --ink-3:#1d0030;
  --violet:#8000ff;
  --magenta:#ff00ff;
  --txt:#ece2ff;
  --dim:#a58fc9;
  --line:rgba(128,0,255,.28);
  --line-soft:rgba(255,0,255,.16);
  --mono:ui-monospace,SFMono-Regular,"DejaVu Sans Mono",Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{
  scroll-behavior:smooth;
  background:var(--ink);
  -webkit-text-size-adjust:100%;
}
body{
  margin:0;
  background:
    radial-gradient(900px 420px at 50% -160px,rgba(128,0,255,.30),transparent 70%),
    radial-gradient(720px 380px at 90% 8%,rgba(255,0,255,.14),transparent 72%),
    var(--ink);
  color:var(--txt);
  font-family:"Roboto",system-ui,-apple-system,"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  font-size:17px;
  line-height:1.78;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
body::after{
  content:"";
  position:fixed;
  inset:0;
  z-index:30;
  pointer-events:none;
  background:repeating-linear-gradient(0deg,rgba(255,255,255,.032) 0 1px,transparent 1px 3px);
}
a{color:var(--magenta);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%;height:auto;display:block}
p{margin:0 0 1.05em}
ol,ul{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{line-height:1.28;margin:0 0 .5em;font-weight:700}
hr{
  border:0;
  height:1px;
  margin:.45em 0 1.15em;
  background:linear-gradient(90deg,var(--magenta),rgba(128,0,255,.5) 45%,transparent);
  opacity:.75;
}
.skip{
  position:absolute;
  left:12px;
  top:-60px;
  z-index:40;
  padding:10px 16px;
  background:var(--magenta);
  color:#0d0d0d;
  font-family:var(--mono);
  font-size:.82rem;
  transition:top .18s ease;
}
.skip:focus{top:10px}
.hud{
  position:sticky;
  top:0;
  z-index:25;
  background:rgba(13,13,13,.94);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(6px);
}
.hud-brandrow{
  display:flex;
  align-items:center;
  padding:12px 20px 8px;
  max-width:1220px;
  margin:0 auto;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  min-height:40px;
  color:var(--txt);
  font-size:1.12rem;
  font-weight:700;
  letter-spacing:.06em;
}
.brand:hover{text-decoration:none;color:#fff}
.brand-glyph{
  width:12px;
  height:22px;
  flex:0 0 auto;
  background:linear-gradient(180deg,var(--magenta),var(--violet));
  box-shadow:0 0 14px rgba(255,0,255,.85);
  transform:skewX(-12deg);
}
.brand-text{text-shadow:0 0 12px rgba(128,0,255,.85)}
.hud-navrow{
  border-top:1px solid var(--line-soft);
  overflow-x:auto;
  overflow-y:hidden;
  scrollbar-width:none;
}
.hud-navrow::-webkit-scrollbar{display:none}
.hud-nav{max-width:1220px;margin:0 auto;padding:0 12px}
.nav-list{
  display:flex;
  align-items:stretch;
  gap:2px;
  counter-reset:nv;
  white-space:nowrap;
}
.nav-list>li{counter-increment:nv}
.nav-link{
  display:inline-flex;
  align-items:center;
  gap:7px;
  min-height:44px;
  padding:0 13px;
  color:var(--dim);
  font-family:var(--mono);
  font-size:.85rem;
  letter-spacing:.04em;
  border-bottom:2px solid transparent;
  transition:color .16s ease,border-color .16s ease,background .16s ease;
}
.nav-link::before{
  content:counter(nv,decimal-leading-zero);
  font-size:.72rem;
  color:rgba(128,0,255,.85);
}
.nav-link:hover,.nav-link:focus-visible{
  color:#fff;
  text-decoration:none;
  background:rgba(128,0,255,.16);
  border-bottom-color:var(--magenta);
}
.deck-main{
  max-width:1220px;
  margin:0 auto;
  padding:0 20px 60px;
  display:grid;
  grid-template-columns:246px minmax(0,1fr);
  gap:0 44px;
  align-items:start;
}
.hero{
  position:relative;
  grid-column:1 / -1;
  min-height:70vh;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  text-align:center;
  padding:64px 10px 56px;
  overflow:hidden;
  border-bottom:1px solid var(--line);
}
.hero-ghost{
  position:absolute;
  inset:0;
  display:grid;
  place-items:center;
  font-size:clamp(3rem,14vw,9.5rem);
  font-weight:700;
  letter-spacing:-.045em;
  white-space:nowrap;
  color:transparent;
  -webkit-text-stroke:1px rgba(128,0,255,.34);
  pointer-events:none;
  user-select:none;
}
.hero-tag{
  width:58px;
  height:4px;
  background:var(--magenta);
  box-shadow:0 0 18px rgba(255,0,255,.95);
  margin-bottom:26px;
}
.hero-title{
  position:relative;
  margin:0;
  font-size:clamp(1.9rem,7vw,4.4rem);
  letter-spacing:.02em;
  text-shadow:0 0 10px rgba(255,0,255,.7),0 0 34px rgba(128,0,255,.65);
  animation:glitch 7s steps(1,end) infinite;
  max-width:16em;
}
.hero-rule{
  margin-top:28px;
  width:min(420px,80%);
  height:1px;
  background:linear-gradient(90deg,transparent,var(--violet),var(--magenta),transparent);
}
@keyframes glitch{
  0%,90%,100%{transform:none}
  91%{transform:translate(-3px,1px) skewX(-2.5deg)}
  93%{transform:translate(3px,-1px) skewX(2.5deg)}
  95%{transform:translate(-1px,0) skewX(-1deg)}
  97%{transform:translate(2px,0)}
}
.panel{
  grid-column:1;
  grid-row:2;
  position:sticky;
  top:104px;
  align-self:start;
  margin-top:34px;
  padding:20px 18px 22px;
  background:var(--ink-2);
  border-left:3px solid var(--magenta);
}
.panel-head,.deck-head{
  font-family:var(--mono);
  font-size:.86rem;
  font-weight:500;
  letter-spacing:.26em;
  text-transform:uppercase;
  color:var(--magenta);
  margin:0;
  text-shadow:0 0 10px rgba(255,0,255,.6);
}
.toc{counter-reset:tc}
.toc>li{counter-increment:tc;border-bottom:1px dashed rgba(128,0,255,.22)}
.toc>li:last-child{border-bottom:0}
.toc-link{
  display:inline-flex;
  align-items:center;
  gap:9px;
  min-height:40px;
  padding:4px 0;
  color:var(--txt);
  font-size:.94rem;
  line-height:1.4;
}
.toc-link::before{
  content:counter(tc,decimal-leading-zero);
  font-family:var(--mono);
  font-size:.74rem;
  color:rgba(128,0,255,.9);
  flex:0 0 auto;
}
.toc-link:hover{color:var(--magenta);text-decoration:none}
.stream{
  grid-column:2;
  grid-row:2;
  min-width:0;
  margin-top:34px;
  padding-bottom:20px;
}
.stream>div{
  scroll-margin-top:130px;
  padding:30px 0 34px;
  border-bottom:1px solid var(--line-soft);
}
.stream>div:last-child{border-bottom:0}
.stream h2{
  font-size:clamp(1.34rem,3.4vw,1.85rem);
  color:#fff;
  text-shadow:0 0 14px rgba(128,0,255,.7);
  margin-top:0;
}
.stream h3{
  font-size:1.12rem;
  color:var(--magenta);
  margin-top:1.5em;
}
.stream p{color:var(--txt)}
.stream ul,.stream ol{
  list-style:none;
  margin:0 0 1.1em;
}
.stream ul>li,.stream ol>li{
  position:relative;
  padding-left:22px;
  margin-bottom:.6em;
}
.stream ul>li::before{
  content:"";
  position:absolute;
  left:2px;
  top:.72em;
  width:8px;
  height:8px;
  background:var(--violet);
  transform:skewX(-14deg);
}
.stream ol{counter-reset:st}
.stream ol>li{counter-increment:st}
.stream ol>li::before{
  content:counter(st,decimal-leading-zero);
  position:absolute;
  left:0;
  top:.15em;
  font-family:var(--mono);
  font-size:.78rem;
  color:var(--magenta);
}
.stream a{
  border-bottom:1px solid rgba(255,0,255,.45);
  transition:color .15s ease,border-color .15s ease,background .15s ease;
}
.stream a:hover{
  color:#fff;
  text-decoration:none;
  background:rgba(255,0,255,.14);
  border-bottom-color:var(--magenta);
}
.stream blockquote{
  margin:0 0 1.1em;
  padding:14px 18px;
  background:var(--ink-2);
  border-left:3px solid var(--violet);
  color:var(--dim);
}
.stream blockquote p:last-child{margin-bottom:0}
.stream code{
  font-family:var(--mono);
  font-size:.9em;
  padding:1px 5px;
  background:rgba(128,0,255,.2);
  color:#fff;
}
.stream table{
  width:100%;
  border-collapse:collapse;
  margin:0 0 1.2em;
  font-size:.95rem;
}
.stream th,.stream td{
  text-align:left;
  padding:9px 11px;
  border-bottom:1px solid var(--line);
}
.stream th{background:var(--ink-3);color:var(--magenta);font-family:var(--mono);font-weight:500}
.stream img{margin:0 0 1.1em}
.deck{
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,#120020,var(--ink) 72%);
  display:grid;
  grid-template-columns:1.3fr 1fr .9fr;
  gap:0 44px;
  padding:44px 20px 0;
  max-width:1220px;
  margin:0 auto;
}
.deck-col{min-width:0;padding-bottom:26px}
.deck-brand{
  margin:0 0 .5em;
  font-size:1.02rem;
  font-weight:700;
  color:#fff;
  letter-spacing:.05em;
}
.deck-desc{
  color:var(--dim);
  font-size:.94rem;
  line-height:1.7;
}
.deck-host{
  font-family:var(--mono);
  font-size:.9rem;
  color:var(--txt);
  word-break:break-all;
}
.deck-key{
  color:var(--dim);
  font-size:.9rem;
}
.foot-link{font-size:.9rem;color:var(--dim)}
.legal{
  grid-column:1 / -1;
  display:flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  padding:18px 0 26px;
  margin-top:6px;
  border-top:1px solid var(--line-soft);
  font-family:var(--mono);
  font-size:.8rem;
  color:rgba(165,143,201,.75);
  letter-spacing:.06em;
}
.legal-dot{
  width:7px;
  height:7px;
  background:var(--magenta);
  box-shadow:0 0 9px rgba(255,0,255,.9);
}
.to-top{
  position:fixed;
  right:16px;
  bottom:16px;
  z-index:28;
  min-height:44px;
  padding:0 16px;
  font-family:var(--mono);
  font-size:.8rem;
  color:#0d0d0d;
  background:var(--magenta);
  border:0;
  border-radius:0;
  cursor:pointer;
  opacity:0;
  transform:translateY(12px);
  pointer-events:none;
  transition:opacity .2s ease,transform .2s ease,box-shadow .2s ease;
}
.to-top.on{opacity:1;transform:none;pointer-events:auto}
.to-top:hover{box-shadow:0 0 20px rgba(255,0,255,.9)}
.reveal{opacity:0;transform:translateY(16px);transition:opacity .5s ease,transform .5s ease}
.reveal.in{opacity:1;transform:none}
@media (max-width:980px){
  .deck-main{grid-template-columns:1fr;gap:0}
  .panel{
    grid-column:1;
    grid-row:2;
    position:static;
    margin-top:26px;
    border-left-width:3px;
  }
  .stream{grid-column:1;grid-row:3;margin-top:8px}
  .hero{min-height:56vh;padding:48px 8px 40px}
  .deck{grid-template-columns:1fr 1fr;gap:0 30px;padding-top:36px}
  .deck-col-a{grid-column:1 / -1}
  .legal{grid-column:1 / -1}
  .stream>div{scroll-margin-top:118px}
}
@media (max-width:620px){
  body{font-size:16.5px}
  .deck-main{padding:0 16px 48px}
  .hero{min-height:54vh}
  .hero-title{font-size:clamp(1.7rem,8.6vw,2.5rem)}
  .hero-ghost{font-size:16vw}
  .deck{grid-template-columns:1fr;gap:0}
  .deck-col{padding-bottom:20px}
  .deck-col-b,.deck-col-c{border-top:1px solid var(--line-soft);padding-top:18px}
  .to-top{right:12px;bottom:12px}
  .brand{font-size:1.02rem}
  .nav-link{padding:0 11px;font-size:.8rem}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .hero-title{animation:none}
  .reveal{opacity:1;transform:none;transition:none}
  .to-top{transition:none}
}

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