@import url('https://fonts.googleapis.com/css2?family=Press+Start+2P&family=VT323&display=swap');
:root{
--bg:#000000;
--slab:#121212;
--slab-2:#1a1a1a;
--line:#242424;
--ink:#e9e9e9;
--dim:#8f8f8f;
--neon:#39ff14;
--top:56px;
--font:-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
--pix:"VT323","Press Start 2P",ui-monospace,"SFMono-Regular",monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{background:var(--bg);color-scheme:dark;scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--font);font-size:16px;line-height:1.85;overflow-x:hidden}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
:focus-visible{outline:2px solid var(--neon);outline-offset:3px}
article{scroll-margin-top:calc(var(--top) + 16px)}

.topbar{position:sticky;top:0;z-index:40;display:flex;align-items:center;gap:12px;height:var(--top);padding:0 14px;background:#000;border-bottom:1px solid var(--line)}
.brandmark{flex:0 0 auto;display:grid;place-items:center;width:40px;height:40px;border:1px solid var(--line);border-radius:4px;background:var(--slab);transition:border-color .2s ease,background .2s ease}
.brandmark:hover{border-color:var(--neon);background:var(--slab-2)}
.brandmark img{width:26px;height:26px;object-fit:contain}
.mark-dot{width:12px;height:12px;background:var(--neon);box-shadow:0 0 10px rgba(57,255,20,.6)}
.topnav{flex:1 1 auto;min-width:0;overflow-x:auto;scrollbar-width:none}
.topnav::-webkit-scrollbar{display:none}
.topnav p{display:flex;gap:2px;margin:0;white-space:nowrap}
.topnav a{display:inline-block;padding:12px 10px;font-size:16px;line-height:1.5;color:var(--dim);border-radius:4px;transition:color .18s ease,background .18s ease}
.topnav a:hover{color:#fff;background:var(--slab)}

.hero{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:36px;align-items:center;max-width:1240px;margin:0 auto;padding:40px 24px;min-height:calc(100vh - var(--top))}
.hero-copy{order:1;text-align:center}
.hero h1{margin:0;font-size:clamp(2.1rem,5.6vw,3.9rem);line-height:1.2;letter-spacing:.02em;color:#fff;text-shadow:0 0 10px rgba(57,255,20,.22)}
.hero-desc{max-width:34ch;margin:22px auto 0;color:var(--dim);font-size:16px;line-height:1.9}
.hero-figure{order:2;position:relative;margin:0;height:min(76vh,640px);border:1px solid var(--line);border-radius:4px;background:var(--slab);overflow:hidden}
.pixels{position:absolute;inset:0;background-image:radial-gradient(circle,#1f1f1f 1px,transparent 1px);background-size:10px 10px}
.hero-img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transform:scale(1.04);will-change:transform}

.deck{display:grid;grid-template-columns:196px minmax(0,1fr);gap:44px;max-width:1180px;margin:0 auto;padding:56px 24px 88px;border-top:1px solid var(--line)}
.rail{align-self:start;position:sticky;top:calc(var(--top) + 18px)}
.rail-h{margin:0 0 12px;padding-bottom:10px;font-size:16px;font-weight:600;letter-spacing:.2em;color:var(--dim);border-bottom:1px solid var(--line)}
.rail-h span{color:var(--neon)}
.rail-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:2px}
.rail-list a{display:block;padding:10px;font-size:16px;line-height:1.5;color:var(--dim);border-left:2px solid transparent;border-radius:0 4px 4px 0;transition:color .18s ease,background .18s ease,border-color .18s ease}
.rail-list a:hover{color:#fff;background:var(--slab);border-left-color:var(--neon)}

.prose{min-width:0;max-width:70ch}
.prose article{padding-block:44px;border-bottom:1px solid var(--line)}
.prose article:first-child{padding-top:0}
.prose article:last-child{padding-bottom:0;border-bottom:0}
.prose h2{display:flex;gap:12px;align-items:baseline;margin:0 0 18px;font-size:clamp(1.35rem,3.2vw,1.8rem);line-height:1.35;letter-spacing:.01em;color:#fff}
.prose h2::before{content:"";flex:0 0 auto;width:10px;height:10px;background:var(--neon);box-shadow:0 0 10px rgba(57,255,20,.55);transform:translateY(-2px)}
.prose h2 span{display:block}
.prose h3{display:flex;gap:10px;align-items:baseline;margin:28px 0 10px;font-size:1.15rem;line-height:1.5;color:#fff}
.prose h3::before{content:"";flex:0 0 auto;width:6px;height:6px;background:var(--dim)}
.prose h3 span{display:block}
.prose p{margin:0 0 18px;line-height:1.95;color:#d6d6d6}
.prose ul,.prose ol{margin:0 0 18px;padding-left:22px;color:#d6d6d6}
.prose li{margin-bottom:8px;line-height:1.9}
.prose strong,.prose b{color:#fff}
.prose a{color:var(--neon);border-bottom:1px solid rgba(57,255,20,.35);word-break:break-word}
.prose a:hover{background:rgba(57,255,20,.1)}
.prose blockquote{margin:0 0 18px;padding:12px 18px;background:var(--slab);border-left:3px solid var(--neon);border-radius:0 4px 4px 0;color:#cfcfcf}
.prose blockquote p:last-child{margin-bottom:0}
.prose figure{margin:0 0 20px;padding:0;border:1px solid var(--line);border-radius:4px;overflow:hidden;background:var(--slab)}
.prose figure img{width:100%;height:auto}
.prose figcaption{padding:10px 14px;font-size:16px;line-height:1.6;color:var(--dim);border-top:1px solid var(--line)}
.prose table{display:block;width:100%;margin:0 0 18px;overflow-x:auto;border-collapse:collapse;font-size:16px}
.prose th,.prose td{padding:8px 12px;border:1px solid var(--line);text-align:left}
.prose th{background:var(--slab);color:#fff}
.prose hr{border:0;border-top:1px solid var(--line);margin:24px 0}
.prose code,.prose pre{font-family:var(--pix);font-size:1.05rem;color:var(--neon)}
.prose pre{padding:14px;background:var(--slab);border-radius:4px;overflow-x:auto}

.foot{padding:52px 24px 30px;background:#050505;border-top:1px solid var(--line)}
.foot-cols{display:flex;flex-wrap:wrap;gap:48px;max-width:1180px;margin:0 auto}
.foot-h{margin:0 0 10px;font-size:16px;font-weight:600;letter-spacing:.18em;color:var(--dim)}
.foot-h span{color:var(--neon)}
.foot address{font-style:normal;font-size:16px;line-height:1.8;color:var(--ink)}
.foot ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:2px}
.foot ul a{display:inline-block;min-height:40px;padding:10px 2px;font-size:16px;color:var(--dim);transition:color .18s ease}
.foot ul a:hover{color:#fff}
.copy{max-width:1180px;margin:32px auto 0;padding-top:20px;border-top:1px solid var(--line);text-align:center;font-size:16px;color:#6a6a6a}

.rv{opacity:0;transform:translateY(16px);transition:opacity .6s ease,transform .6s ease}
.rv.in{opacity:1;transform:none}

@media (max-width:860px){
.hero{grid-template-columns:minmax(0,1fr);gap:24px;padding:26px 18px 40px}
.hero-figure{order:2;height:40vh;min-height:220px}
.hero h1{font-size:clamp(1.9rem,8vw,2.7rem)}
.hero-desc{margin-top:16px;max-width:38ch}
.deck{grid-template-columns:minmax(0,1fr);gap:26px;padding:34px 18px 64px}
.rail{position:static}
.rail-list{flex-direction:row;flex-wrap:wrap;gap:6px}
.rail-list a{padding:10px 12px;border:1px solid var(--line);border-radius:4px}
.rail-list a:hover{border-left-color:var(--neon)}
.prose h2{flex-wrap:nowrap}
.foot{padding:40px 18px 24px}
.foot-cols{gap:30px;flex-direction:column}
}

@media (prefers-reduced-motion:reduce){
html{scroll-behavior:auto}
.rv{opacity:1;transform:none;transition:none}
.hero-img{transform:none}
}

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