:root{
  --bg:#0d1117; --panel:#151b24; --panel2:#1b2330; --line:#263041;
  --text:#e6edf3; --muted:#8b98a9; --cyan:#27e0d0; --blue:#3b82f6; --purple:#a855f7; --orange:#ff8c00; --green:#4ade80;
  --radius:12px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font:16px/1.65 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif}
a{color:var(--cyan);text-decoration:none} a:hover{text-decoration:underline}
img.px{image-rendering:pixelated;image-rendering:crisp-edges}
code,kbd{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}
code{background:#0b0f15;border:1px solid var(--line);border-radius:6px;padding:.08em .4em;font-size:.9em}
kbd{background:#0b0f15;border:1px solid var(--line);border-bottom-width:2px;border-radius:5px;padding:.05em .4em;font-size:.85em}
html[data-lang="ru"] .en, html[data-lang="en"] .ru{display:none !important}

.wrap{max-width:1040px;margin:0 auto;padding:0 20px}
header.nav{position:sticky;top:0;z-index:10;background:rgba(13,17,23,.85);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
header.nav .wrap{display:flex;align-items:center;gap:18px;height:56px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;color:var(--text)}
.brand img{width:28px;height:28px}
nav.links{display:flex;gap:16px;margin-left:auto;font-size:.92rem;overflow-x:auto;white-space:nowrap}
nav.links a{color:var(--muted)} nav.links a:hover{color:var(--text);text-decoration:none}
.lang{border:1px solid var(--line);background:var(--panel);color:var(--text);border-radius:8px;padding:5px 10px;cursor:pointer;font:inherit;font-size:.85rem}
.lang:hover{border-color:var(--cyan)}

.hero{padding:72px 0 56px;text-align:center;background:radial-gradient(ellipse at 50% 0,rgba(39,224,208,.14),transparent 60%)}
.hero .logo{display:flex;justify-content:center;gap:10px;margin-bottom:22px}
.hero .logo img{width:64px;height:64px;filter:drop-shadow(0 0 14px rgba(39,224,208,.35))}
.hero h1{font-size:clamp(2rem,5.5vw,3.4rem);line-height:1.1;margin:0 0 14px;letter-spacing:-.02em}
.hero h1 span{color:var(--cyan)}
.hero p.lead{font-size:1.15rem;color:var(--muted);max-width:660px;margin:0 auto 26px}
.badges{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin-bottom:28px}
.badge{border:1px solid var(--line);background:var(--panel);border-radius:999px;padding:4px 12px;font-size:.85rem;color:var(--muted)}
.badge b{color:var(--text)}
.btns{display:flex;flex-wrap:wrap;gap:12px;justify-content:center}
.btn{display:inline-block;padding:11px 20px;border-radius:10px;border:1px solid var(--line);background:var(--panel);color:var(--text);font-weight:600}
.btn:hover{text-decoration:none;border-color:var(--cyan)}
.btn.primary{background:var(--cyan);border-color:var(--cyan);color:#04201d}
.btn.primary:hover{filter:brightness(1.08)}

section{padding:56px 0;border-top:1px solid var(--line)}
section h2{font-size:1.8rem;margin:0 0 8px;letter-spacing:-.01em}
section .sub{color:var(--muted);margin:0 0 28px;max-width:720px}
h3{margin:28px 0 8px;font-size:1.15rem}

.grid{display:grid;gap:16px}
.g2{grid-template-columns:repeat(auto-fit,minmax(300px,1fr))}
.g3{grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}
.g4{grid-template-columns:repeat(auto-fit,minmax(200px,1fr))}
.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:18px}
.card h3{margin:0 0 6px;font-size:1.05rem}
.card p{margin:0;color:var(--muted);font-size:.95rem}
.card .ic{width:48px;height:48px;margin-bottom:10px;display:block}

.formula{background:var(--panel2);border:1px solid var(--line);border-left:3px solid var(--cyan);border-radius:var(--radius);padding:18px 22px;margin:18px 0;font-size:1.05rem}
.formula .eq{font-family:ui-monospace,Menlo,Consolas,monospace;color:var(--cyan);font-size:1.1rem}

.cells{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:14px}
.cell{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:18px;text-align:center}
.cell img{width:64px;height:64px;margin-bottom:6px}
.cell .n{font-size:1.4rem;font-weight:700}
.cell .b{color:var(--muted);font-size:.9rem}
.c1{border-top:3px solid var(--green)} .c4{border-top:3px solid var(--blue)} .c16{border-top:3px solid var(--purple)} .c64{border-top:3px solid var(--orange)}

.block{display:flex;gap:14px;align-items:flex-start}
.block img{width:56px;height:56px;flex:none;border-radius:6px;border:1px solid var(--line);background:#0b0f15}
.block h3{margin:0 0 4px;font-size:1.02rem}
.block p{margin:0;color:var(--muted);font-size:.93rem}

table{width:100%;border-collapse:collapse;font-size:.95rem;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
th,td{text-align:left;padding:10px 14px;border-bottom:1px solid var(--line);vertical-align:top}
th{background:var(--panel2);color:var(--muted);font-weight:600;font-size:.85rem;text-transform:uppercase;letter-spacing:.04em}
tr:last-child td{border-bottom:0}

pre{background:#0b0f15;border:1px solid var(--line);border-radius:var(--radius);padding:16px;overflow-x:auto;font-size:.88rem;line-height:1.5;margin:14px 0}
pre code{background:none;border:0;padding:0}
.steps{counter-reset:s;list-style:none;padding:0;margin:0;display:grid;gap:12px}
.steps li{counter-increment:s;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:14px 16px 14px 56px;position:relative}
.steps li::before{content:counter(s);position:absolute;left:16px;top:50%;transform:translateY(-50%);width:28px;height:28px;border-radius:50%;background:var(--cyan);color:#04201d;font-weight:700;display:grid;place-items:center}
.flow{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin:16px 0}
.flow .step{background:var(--panel2);border:1px solid var(--line);border-radius:8px;padding:6px 12px;font-size:.9rem}
.flow .arr{color:var(--cyan)}
.state{display:flex;gap:12px;align-items:center;margin:6px 0;color:var(--muted)}
.state img{width:36px;height:36px;border-radius:4px}
.state b{color:var(--text)}

footer{border-top:1px solid var(--line);padding:32px 0 48px;color:var(--muted);font-size:.9rem;text-align:center}
footer .wrap > div{margin:4px 0}
@media (max-width:640px){nav.links{display:none}.hero{padding:48px 0 40px}}

/* ---------- documentation pages ---------- */
.doc{display:grid;grid-template-columns:250px minmax(0,1fr);gap:40px;padding:36px 0 64px;align-items:start}
.side{position:sticky;top:76px;max-height:calc(100vh - 96px);overflow-y:auto;font-size:.92rem;padding-right:6px}
.side h4{margin:18px 0 6px;font-size:.75rem;text-transform:uppercase;letter-spacing:.06em;color:var(--muted)}
.side h4:first-child{margin-top:0}
.side a{display:block;padding:4px 10px;border-radius:6px;color:var(--text);border-left:2px solid transparent}
.side a:hover{background:var(--panel);text-decoration:none}
.side a.cur{background:var(--panel2);border-left-color:var(--cyan);color:var(--cyan);font-weight:600}
.prose{min-width:0}
.prose h1{font-size:2.1rem;margin:0 0 18px;letter-spacing:-.01em}
.prose h2{font-size:1.45rem;margin:38px 0 10px;padding-top:6px;border-top:1px solid var(--line)}
.prose h3{font-size:1.15rem;margin:26px 0 8px}
.prose h4{margin:20px 0 6px}
.prose p,.prose li{color:#cfd8e3}
.prose ul,.prose ol{padding-left:1.4em}
.prose li{margin:3px 0}
.prose img{max-width:100%}
.prose table{margin:14px 0;display:block;overflow-x:auto}
.prose pre{margin:14px 0}
.prose blockquote{margin:16px 0;padding:10px 16px;border-left:3px solid var(--cyan);background:var(--panel);border-radius:0 8px 8px 0}
.prose blockquote p{margin:4px 0}
.prose hr{border:0;border-top:1px solid var(--line);margin:28px 0}
.prose .anchor{color:var(--muted);margin-left:6px;opacity:0;font-weight:400}
.prose h1:hover .anchor,.prose h2:hover .anchor,.prose h3:hover .anchor{opacity:1}
.docnote{font-size:.85rem;color:var(--muted);margin-bottom:18px}
.menu-btn{display:none}
@media (max-width:960px){
  .doc{grid-template-columns:1fr;gap:18px}
  .side{position:static;max-height:none;display:none;border:1px solid var(--line);border-radius:var(--radius);padding:12px;background:var(--panel)}
  .side.open{display:block}
  .menu-btn{display:inline-block;margin-bottom:6px}
}

/* ---------- logo ---------- */
.brandlogo{width:32px;height:32px;border-radius:6px}

/* ---------- syntax highlighting (highlight.js tokens, site palette) ---------- */
pre code.hljs{display:block}
.hljs{color:#d6deeb}
.hljs-comment,.hljs-quote{color:#6b7a90;font-style:italic}
.hljs-keyword,.hljs-selector-tag,.hljs-doctag,.hljs-meta .hljs-keyword{color:#c792ea}
.hljs-string,.hljs-regexp,.hljs-template-string,.hljs-addition{color:#7fdc9a}
.hljs-number,.hljs-literal,.hljs-symbol,.hljs-bullet{color:#ffa94d}
.hljs-title,.hljs-title.function_,.hljs-section{color:#82aaff}
.hljs-title.class_,.hljs-type{color:#ffd479}
.hljs-built_in,.hljs-attr,.hljs-property,.hljs-variable.language_{color:#27e0d0}
.hljs-params,.hljs-variable,.hljs-subst{color:#d6deeb}
.hljs-operator,.hljs-punctuation{color:#89a2bf}
.hljs-meta,.hljs-deletion{color:#ff7b72}

/* ---------- recipe grids ---------- */
.rlist{display:grid;grid-template-columns:repeat(auto-fill,minmax(270px,1fr));gap:16px;margin:14px 0 6px}
.recipe{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:16px}
.prose .recipe h3{margin:0 0 12px;font-size:1.02rem}
.rflow{--s:46px;display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.recipe{container-type:inline-size}
@supports (width:1cqw){.rflow{--s:clamp(34px,calc(23cqw - 16px),52px)}}
.rgrid{display:grid;gap:3px;padding:6px;background:#0b0f15;border:1px solid var(--line);border-radius:8px}
.rarrow{color:var(--cyan);font-size:1.4rem}
.slot{position:relative;width:var(--s);height:var(--s);border-radius:5px;background:#1b2330;border:1px solid #2b3648;display:flex;align-items:center;justify-content:center;flex:none}
.slot.empty{background:#141a24;border-color:#202a39}
.slot.big{width:calc(var(--s)*1.2);height:calc(var(--s)*1.2);border-color:var(--cyan);box-shadow:0 0 14px rgba(39,224,208,.18)}
.slot img{width:62%;height:62%}
.slot.big img{width:68%;height:68%}
.slot.van{flex-direction:column;gap:2px;padding:3px}
.slot.van i{display:block;width:16px;height:16px;border-radius:4px;box-shadow:inset 0 -3px 0 rgba(0,0,0,.25),0 0 0 1px rgba(0,0,0,.35)}
.slot.van em{font-style:normal;font-size:.54rem;letter-spacing:-.02em;line-height:1.05;color:var(--muted);text-align:center;max-width:100%;overflow:hidden}
.slot .cnt{position:absolute;right:3px;bottom:1px;font-size:.78rem;color:#fff;text-shadow:0 1px 2px #000}
.rmeta{margin:12px 0 2px;font-size:.82rem;color:var(--muted)}
.rtag{display:inline-block;padding:1px 8px;border-radius:999px;font-size:.72rem;font-weight:600;margin-right:4px;border:1px solid var(--line)}
.rtag.shaped{color:var(--cyan);border-color:rgba(39,224,208,.4)}
.rtag.shapeless{color:var(--orange);border-color:rgba(255,140,0,.4)}
.rsum{margin:4px 0 0;font-size:.86rem;color:#a9b6c7}
@supports (width:1cqw){.slot.van em{font-size:clamp(.42rem,2.5cqw,.54rem)}}
@container (max-width:200px){.slot.van em{display:none}}