:root{--bg:#06101d;--p1:#0a1727;--p2:#0d1d31;--line:#20324a;--tx:#edf4ff;--mu:#8fa4bd;--bl:#45a4ff;--gr:#24d18f;--rd:#ff6174;--am:#f7b955}
*{box-sizing:border-box}html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--tx);font:16px/1.65 Inter,system-ui,sans-serif;-webkit-font-smoothing:antialiased}
a{color:var(--bl);text-decoration:none}a:hover{text-decoration:underline}
.wrap{max-width:1120px;margin:0 auto;padding:0 20px}
header.nav{position:sticky;top:0;z-index:20;background:rgba(6,16,29,.92);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav .wrap{display:flex;align-items:center;gap:18px;height:62px}
.brand{display:flex;align-items:center;gap:10px;color:var(--tx);font-weight:800}.brand img{width:34px;height:34px}.brand small{display:block;font:600 10px/1 'JetBrains Mono',monospace;color:var(--mu);letter-spacing:.12em}
.nav nav{display:flex;gap:4px;margin-left:auto;flex-wrap:wrap}.nav nav a{color:var(--mu);padding:8px 12px;border-radius:8px;font-weight:600;font-size:14px}.nav nav a:hover{color:var(--tx);background:var(--p2);text-decoration:none}
.btn{display:inline-block;padding:12px 20px;border-radius:10px;font-weight:700;border:1px solid var(--line);color:var(--tx);background:var(--p2)}.btn:hover{text-decoration:none;border-color:var(--bl)}
.btn.pri{background:var(--bl);color:#04101e;border-color:var(--bl)}
.hero{padding:72px 0 48px;text-align:center;background:radial-gradient(900px 340px at 50% -80px,rgba(69,164,255,.22),transparent)}
.kick{font:700 12px 'JetBrains Mono',monospace;letter-spacing:.14em;color:var(--bl);text-transform:uppercase}
h1{font-size:clamp(32px,6vw,56px);line-height:1.08;margin:14px 0;letter-spacing:-.02em}
.lead{color:var(--mu);font-size:18px;max-width:680px;margin:0 auto 26px}
.search{position:relative;max-width:620px;margin:0 auto}
.search input{width:100%;padding:16px 18px;border-radius:12px;border:1px solid var(--line);background:var(--p1);color:var(--tx);font:inherit;font-size:16px}
.search input:focus{outline:2px solid var(--bl);border-color:var(--bl)}
.sugg{position:absolute;left:0;right:0;top:58px;background:var(--p1);border:1px solid var(--line);border-radius:12px;text-align:left;overflow:hidden;z-index:5;box-shadow:0 20px 50px #000a}
.sugg a{display:block;padding:11px 16px;color:var(--tx);border-bottom:1px solid var(--line)}.sugg a:last-child{border:0}.sugg a:hover{background:var(--p2);text-decoration:none}.sugg small{color:var(--mu);display:block}
.stats{display:flex;gap:28px;justify-content:center;margin-top:30px;flex-wrap:wrap}.stats b{display:block;font:800 26px 'JetBrains Mono',monospace}.stats span{color:var(--mu);font-size:13px}
section.s{padding:44px 0}
h2{font-size:28px;margin:0 0 6px;letter-spacing:-.01em}.sub{color:var(--mu);margin:0 0 24px}
.grid{display:grid;gap:16px;grid-template-columns:repeat(auto-fill,minmax(250px,1fr))}
.card{background:var(--p1);border:1px solid var(--line);border-radius:14px;padding:18px;color:var(--tx);display:block;transition:.15s}
a.card:hover{border-color:var(--bl);transform:translateY(-2px);text-decoration:none}
.card .ic{font-size:26px}.card h3{margin:8px 0 4px;font-size:17px}.card p{margin:0;color:var(--mu);font-size:14px;line-height:1.5}
.card .meta{margin-top:10px;font:600 11px 'JetBrains Mono',monospace;color:var(--mu)}
.tag{display:inline-block;padding:2px 9px;border-radius:99px;font:700 11px 'JetBrains Mono',monospace;border:1px solid var(--line);color:var(--mu)}
.tag.b{color:var(--gr);border-color:#1d6b52}.tag.i{color:var(--am);border-color:#7a5a1f}.tag.a{color:var(--rd);border-color:#7a2f3a}
.path{display:grid;gap:12px;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));counter-reset:p}
.path a{counter-increment:p;position:relative;padding:18px 18px 18px 56px}.path a:before{content:counter(p);position:absolute;left:16px;top:16px;width:28px;height:28px;border-radius:50%;background:var(--bl);color:#04101e;font:800 14px/28px 'JetBrains Mono',monospace;text-align:center}
.cta{background:linear-gradient(135deg,#0d2a4a,#0a1727);border:1px solid var(--line);border-radius:18px;padding:30px;display:grid;gap:22px;grid-template-columns:1fr 1fr}
.cta h3{margin:0 0 6px;font-size:22px}.cta p{color:var(--mu);margin:0 0 14px}
details{background:var(--p1);border:1px solid var(--line);border-radius:12px;padding:14px 18px;margin-bottom:10px}summary{cursor:pointer;font-weight:700}details p{color:var(--mu);margin:10px 0 0}
.disc{border:1px solid #7a5a1f;background:rgba(247,185,85,.07);color:#e8cf9a;border-radius:12px;padding:14px 18px;font-size:14px}
footer{border-top:1px solid var(--line);margin-top:50px;padding:30px 0;color:var(--mu);font-size:14px}footer .wrap{display:flex;gap:20px;flex-wrap:wrap;justify-content:space-between}
.crumbs{font-size:13px;color:var(--mu);padding:22px 0 6px}.crumbs a{color:var(--mu)}
.art{display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:34px;padding-bottom:20px}
.art>article{min-width:0}.art h1{font-size:clamp(28px,4.5vw,40px);text-align:left;margin:8px 0}
.art .lede{font-size:19px;color:#cfdceb;margin:0 0 22px}
.fig{background:#08121f;border:1px solid var(--line);border-radius:14px;padding:12px;margin:0 0 28px}.fig svg{width:100%;height:auto;display:block}
.fig figcaption{color:var(--mu);font-size:13px;padding:8px 6px 0}
.art h2{font-size:22px;margin:30px 0 10px}.art p{margin:0 0 14px;color:#d6e2f0}
.steps{counter-reset:s;list-style:none;padding:0;margin:0}.steps li{counter-increment:s;position:relative;padding:12px 14px 12px 50px;background:var(--p1);border:1px solid var(--line);border-radius:10px;margin-bottom:8px}
.steps li:before{content:counter(s);position:absolute;left:13px;top:11px;width:26px;height:26px;border-radius:50%;background:var(--p2);border:1px solid var(--bl);color:var(--bl);font:800 13px/24px 'JetBrains Mono',monospace;text-align:center}
.mist{list-style:none;padding:0;margin:0}.mist li{padding:10px 14px 10px 40px;position:relative;border-left:3px solid var(--rd);background:rgba(255,97,116,.06);border-radius:0 10px 10px 0;margin-bottom:8px}.mist li:before{content:"✕";position:absolute;left:13px;color:var(--rd);font-weight:800}
.use{border:1px solid #1d6b52;background:rgba(36,209,143,.07);border-radius:14px;padding:16px 18px;margin:26px 0}.use h2{margin:0 0 6px!important;font-size:17px!important;color:var(--gr)}.use p{margin:0}
.rule{border-left:4px solid var(--am);padding:10px 16px;background:var(--p1);border-radius:0 10px 10px 0;font-weight:700;margin:22px 0}
aside.toc{position:sticky;top:84px;align-self:start;background:var(--p1);border:1px solid var(--line);border-radius:14px;padding:16px;font-size:14px}
aside.toc h4{margin:0 0 8px;font:700 11px 'JetBrains Mono',monospace;letter-spacing:.12em;color:var(--mu)}aside.toc a{display:block;padding:5px 0;color:var(--tx)}
.pn{display:flex;gap:12px;margin:30px 0}.pn a{flex:1}
.filters{display:flex;gap:8px;flex-wrap:wrap;margin:16px 0 22px}.chip{padding:8px 14px;border-radius:99px;border:1px solid var(--line);background:var(--p1);color:var(--mu);font:600 13px Inter,sans-serif;cursor:pointer}.chip.on,.chip:hover{color:var(--tx);border-color:var(--bl);background:var(--p2)}
.gl dt{font-weight:800;color:var(--bl);margin-top:16px;font-family:'JetBrains Mono',monospace}.gl dd{margin:2px 0 0;color:#d6e2f0}
@media(max-width:860px){.art{grid-template-columns:1fr}aside.toc{position:static}.cta{grid-template-columns:1fr}.nav nav a.h{display:none}}
@media(max-width:700px){.fig{overflow-x:auto;-webkit-overflow-scrolling:touch}.fig svg{min-width:600px}.fig:after{content:'swipe to see the whole diagram →';display:block;color:#8fa4bd;font-size:12px;padding:4px 6px}}.brand{white-space:nowrap}.nav .wrap{gap:10px}
@media(max-width:560px){.hero{padding:44px 0 30px}.nav nav a{padding:6px 8px;font-size:13px}.nav nav a:nth-child(n+4){display:none}.brand small{display:none}}