:root{
  --ink:#121327;
  --bg:#2B2D42;
  --panel:#232541;
  --line:#414466;
  --pink:#EF476F;
  --yellow:#FFD166;
  --text:#EEF0F8;
  --muted:#A9AEC9;
  --pixel:"Press Start 2P",monospace;
  --font:"VT323",-apple-system,BlinkMacSystemFont,"PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;
}

*,*::before,*::after{box-sizing:border-box}

html{
  scroll-behavior:smooth;
  -webkit-text-size-adjust:100%;
  background:var(--bg);
}

body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font);
  font-size:20px;
  line-height:1.65;
  letter-spacing:.3px;
  overflow-x:hidden;
}

h1,h2,h3,h4,p,figure,blockquote{margin:0}
img,svg{max-width:100%}
h1,h2,h3,h4{line-height:1.35;letter-spacing:1px}

a{color:var(--yellow);text-decoration:none}
a:hover{color:var(--pink)}

:focus-visible{outline:3px solid var(--yellow);outline-offset:2px}

/* 顶栏 */
.topbar{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  flex-wrap:wrap;
  padding:12px clamp(14px,4vw,32px);
  background:var(--ink);
  border-bottom:3px solid var(--pink);
}

.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  min-height:44px;
  font-family:var(--pixel);
  font-size:13px;
  letter-spacing:2px;
  color:var(--yellow);
  text-transform:none;
}
.brand:hover{color:#fff}
.mark{width:28px;height:28px;border:2px solid var(--pink);object-fit:cover}

.pills{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
}
.pill{
  display:inline-flex;
  align-items:center;
  min-height:44px;
  padding:10px 14px;
  font-size:16px;
  line-height:1.2;
  color:var(--text);
  border:2px solid var(--pink);
  border-radius:999px;
  background:transparent;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease;
}
.pill:hover,.pill:focus-visible{
  background:var(--pink);
  border-color:var(--pink);
  color:var(--ink);
}

/* 二级粘性锚点条 */
.rail{
  position:sticky;
  top:0;
  z-index:30;
  background:var(--ink);
  border-bottom:2px solid var(--line);
  overflow-x:auto;
  overflow-y:hidden;
  scrollbar-width:none;
}
.rail::-webkit-scrollbar{height:0}

.rail-nav{
  display:flex;
  align-items:stretch;
  gap:2px;
  padding:0 clamp(8px,3vw,24px);
  white-space:nowrap;
}
.rail-a{
  display:inline-flex;
  align-items:center;
  gap:8px;
  min-height:46px;
  padding:10px 13px;
  font-size:16px;
  color:var(--muted);
  border-bottom:3px solid transparent;
  transition:color .16s ease,border-color .16s ease,background-color .16s ease;
}
.rail-a:hover,.rail-a:focus-visible{
  color:var(--yellow);
  background:#1B1D35;
  border-bottom-color:var(--yellow);
}
.rail-n{
  font-family:var(--pixel);
  font-size:9px;
  color:var(--pink);
  letter-spacing:0;
}

/* Hero */
.hero{
  position:relative;
  overflow:hidden;
  min-height:45vh;
  display:flex;
  align-items:center;
  justify-content:center;
  padding:clamp(26px,5vw,52px) clamp(16px,5vw,40px);
  border-bottom:2px solid var(--line);
  background:var(--bg);
}
.hero-dots{
  position:absolute;
  inset:-70px 0 -70px 0;
  background-image:radial-gradient(rgba(255,209,102,.34) 1.6px,transparent 1.7px);
  background-size:20px 20px;
  z-index:0;
  will-change:transform;
  pointer-events:none;
}
.hero-inner{
  position:relative;
  z-index:1;
  display:flex;
  align-items:center;
  justify-content:center;
  gap:clamp(18px,4vw,44px);
  max-width:920px;
  text-align:center;
}
.hero-art{
  flex:0 0 auto;
  width:104px;
  height:104px;
}
.hero-txt{min-width:0}
.hero h1{
  font-family:var(--pixel);
  font-size:clamp(22px,4.6vw,42px);
  line-height:1.5;
  color:#fff;
  letter-spacing:2px;
  text-shadow:3px 3px 0 var(--pink);
}
.lead{
  max-width:52ch;
  margin:16px auto 0;
  font-size:18px;
  color:var(--muted);
}
.btn{
  display:inline-flex;
  align-items:center;
  min-height:46px;
  margin-top:20px;
  padding:11px 22px;
  font-family:var(--pixel);
  font-size:11px;
  letter-spacing:1px;
  color:var(--ink);
  background:var(--yellow);
  border:2px solid var(--yellow);
  border-radius:999px;
  transition:background-color .18s ease,color .18s ease,transform .18s ease;
}
.btn:hover,.btn:focus-visible{
  background:var(--pink);
  border-color:var(--pink);
  color:var(--ink);
  transform:translateY(-2px);
}

/* 主体 */
main{display:block}
.wrap{
  display:flex;
  align-items:flex-start;
  gap:clamp(18px,3vw,36px);
  max-width:1180px;
  margin:0 auto;
  padding:clamp(22px,4vw,42px) clamp(14px,4vw,28px);
}

.side{
  flex:0 0 268px;
  order:-1;
  position:sticky;
  top:66px;
  min-width:0;
}
.side-card{
  background:var(--panel);
  border:2px solid var(--line);
  padding:18px 18px 8px;
  box-shadow:0 10px 24px rgba(8,9,22,.45);
}
.eyebrow{
  display:block;
  font-family:var(--pixel);
  font-size:10px;
  letter-spacing:1px;
  color:var(--pink);
  margin-bottom:10px;
}
.side-h{
  font-size:21px;
  color:var(--yellow);
  margin-bottom:14px;
}
.side-list{
  list-style:none;
  margin:0;
  padding:0;
}
.side-list a{
  display:flex;
  align-items:center;
  gap:10px;
  min-height:44px;
  padding:8px 0;
  color:var(--muted);
  border-top:1px solid var(--line);
  transition:color .16s ease,padding-left .16s ease;
}
.side-list li:first-child a{border-top:2px solid var(--pink)}
.side-list a:hover,.side-list a:focus-visible{
  color:var(--yellow);
  padding-left:6px;
}
.num{
  font-family:var(--pixel);
  font-size:9px;
  color:var(--pink);
}
.txt{font-size:17px}

.body{
  flex:1 1 auto;
  min-width:0;
}

.prose{
  max-width:74ch;
  font-size:20px;
}
.prose article{
  padding:26px 0 6px;
  border-top:2px dashed var(--line);
  scroll-margin-top:88px;
}
.prose article:first-child{
  border-top:0;
  padding-top:0;
}
.prose small{
  display:block;
  font-family:var(--pixel);
  font-size:10px;
  letter-spacing:1px;
  color:var(--pink);
  margin-bottom:10px;
}
.prose h2{
  font-size:clamp(21px,3vw,29px);
  color:var(--yellow);
  margin:0 0 14px;
}
.prose h3{
  font-size:20px;
  color:var(--pink);
  margin:20px 0 10px;
}
.prose p{margin:0 0 16px}
.prose ul,.prose ol{
  margin:0 0 18px;
  padding-left:1.25em;
}
.prose li{margin:0 0 8px}
.prose li::marker{color:var(--pink)}
.prose a{
  text-decoration:underline;
  text-decoration-thickness:2px;
  text-underline-offset:3px;
}
.prose strong{color:var(--yellow)}
.prose em{color:var(--text);font-style:normal;background:#3A3D5E;padding:0 4px}
.prose blockquote{
  margin:20px 0;
  padding:14px 18px;
  border-left:6px solid var(--pink);
  background:var(--panel);
  color:var(--text);
}
.prose img{
  display:block;
  width:100%;
  height:auto;
  margin:16px 0;
  border:2px solid var(--line);
}
.prose figure{margin:16px 0}
.prose figcaption{font-size:16px;color:var(--muted);margin-top:8px}
.prose time{
  font-family:var(--pixel);
  font-size:10px;
  color:var(--muted);
}
.prose hr{
  border:0;
  border-top:2px dashed var(--line);
  margin:24px 0;
}
.prose table{
  width:100%;
  border-collapse:collapse;
  font-size:17px;
  margin:0 0 18px;
}
.prose th,.prose td{
  border:1px solid var(--line);
  padding:8px 10px;
  text-align:left;
}
.prose th{background:var(--panel);color:var(--yellow)}
.prose pre{
  overflow-x:auto;
  padding:12px 14px;
  background:var(--ink);
  border:2px solid var(--line);
  font-size:16px;
  line-height:1.5;
  margin:0 0 18px;
}
.prose code{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:.92em}

/* 页脚 */
.foot{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:clamp(16px,3vw,30px);
  margin-top:clamp(28px,5vw,52px);
  padding:clamp(26px,5vw,44px) clamp(14px,4vw,32px);
  background:var(--ink);
  border-top:3px solid var(--pink);
}
.fcol{min-width:0}
.brand-f{font-size:12px}
.fdesc{
  margin-top:10px;
  max-width:26ch;
  font-size:17px;
  color:var(--muted);
}
.foot dl{margin:0}
.foot dt{
  font-family:var(--pixel);
  font-size:10px;
  letter-spacing:1px;
  color:var(--pink);
  margin-bottom:8px;
}
.foot dd{margin:0}
.foot dd a{
  display:inline-flex;
  align-items:center;
  min-height:40px;
  padding:4px 0;
  font-size:17px;
  color:var(--text);
  border-bottom:1px solid transparent;
  transition:color .16s ease,border-color .16s ease;
}
.foot dd a:hover,.foot dd a:focus-visible{
  color:var(--yellow);
  border-bottom-color:var(--yellow);
}
.legal{
  border-left:2px solid var(--line);
  padding-left:16px;
}
.legal p{font-size:16px;color:var(--muted)}

/* 动效 */
[data-anim="on"] .reveal{
  opacity:0;
  transform:translateY(14px);
}
[data-anim="on"] .reveal.is-in{
  opacity:1;
  transform:none;
  transition:opacity .45s ease,transform .45s ease;
}

/* 断点 */
@media (max-width:900px){
  .wrap{flex-direction:column}
  .side{
    order:2;
    position:static;
    flex:1 1 auto;
    width:100%;
  }
  .body{order:1;width:100%}
  .foot{grid-template-columns:repeat(2,minmax(0,1fr))}
  .legal{
    grid-column:1 / -1;
    border-left:0;
    border-top:2px solid var(--line);
    padding-left:0;
    padding-top:12px;
  }
}

@media (max-width:640px){
  body{font-size:19px}
  .pills{display:none}
  .hero{
    min-height:0;
    padding:24px 16px 28px;
  }
  .hero-inner{
    flex-direction:column;
    gap:14px;
  }
  .hero-art{width:74px;height:74px}
  .hero h1{font-size:clamp(20px,7vw,28px);line-height:1.6}
  .lead{font-size:17px;margin-top:12px}
  .prose{font-size:19px}
  .rail-a{font-size:15px;padding:10px 11px}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .hero-dots{transform:none !important}
  [data-anim="on"] .reveal{
    opacity:1;
    transform:none;
    transition:none;
  }
  .btn:hover{transform:none}
}

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