:root{--bg:#0b0e13;--side:#07090e;--pan:#10141b;--pan2:#1a1d25;--line:#2a2e35;--line2:#3c424d;--tx:#dbe6ec;--mu:#96a4ae;--y:#3a8cea;--yd:#2a76cf;--ink:#0a0e15;--code:#05070b;--err:#84ffd2;
--fd:"Funnel Display","Funnel Sans",system-ui,sans-serif;--fb:"Funnel Sans",system-ui,-apple-system,"Segoe UI",sans-serif;--fm:"Geist Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;--sw:272px}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:24px}
body{margin:0;background:var(--bg);color:var(--tx);font:400 17px/1.65 var(--fb);overflow-x:hidden;-webkit-font-smoothing:antialiased}
[hidden]{display:none!important}
img,svg{max-width:100%}
a{color:var(--y);text-decoration-thickness:1px;text-underline-offset:3px}
a:hover{color:#8abdf8}
:focus-visible{outline:2px solid var(--y);outline-offset:2px;border-radius:4px}
h1,h2,h3{font-family:var(--fd);font-weight:700;line-height:1.1;margin:0;letter-spacing:-.015em;overflow-wrap:break-word}
p{margin:0 0 1em}
.skip{position:absolute;left:12px;top:-80px;z-index:100;background:var(--y);color:var(--ink);padding:12px 16px;border-radius:8px;font-weight:600}
.skip:focus{top:12px}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;min-height:46px;padding:10px 20px;border:1px solid var(--y);border-radius:9px;background:var(--y);color:var(--ink);font:600 15.5px/1.2 var(--fb);text-decoration:none;cursor:pointer;transition:background .15s,transform .15s}
.btn:hover{background:#6aabf6;color:var(--ink)}
.btn:active{transform:translateY(1px)}
.btn .arr{flex:none}
.btn.sm{min-height:44px;padding:8px 15px;font-size:14.5px}
.btn.ghost{background:transparent;color:var(--tx);border-color:var(--line2)}
.btn.ghost:hover{background:var(--pan2);border-color:var(--mu);color:var(--tx)}
.btn.wide{width:100%}
.lbl{font:600 12px/1.3 var(--fm);letter-spacing:.09em;text-transform:uppercase;color:var(--mu);margin:0 0 12px}

/* sidebar */
.side{position:fixed;left:0;top:0;bottom:0;width:var(--sw);background:var(--side);border-right:1px solid var(--line);display:flex;flex-direction:column;padding:22px 18px 18px;overflow-y:auto;z-index:50}
.bar{display:flex;align-items:center;gap:10px;margin-bottom:26px}
.logo{display:flex;align-items:center;gap:10px;min-height:44px;min-width:0;flex:1;color:var(--tx);text-decoration:none;font:700 19px/1 var(--fd);letter-spacing:-.02em}
.logo:hover{color:var(--tx)}
.logo .mark{flex:none}
.logo span{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.logo i{font-style:normal;color:var(--y)}
.burger,.mcta{display:none}
.nav{display:flex;flex-direction:column;flex:1;min-height:0}
.tree{display:flex;flex-direction:column;margin:0 0 22px}
.tree a{position:relative;display:flex;align-items:center;min-height:44px;padding:6px 12px 6px 30px;color:var(--mu);text-decoration:none;font-size:15.5px;border-radius:0 8px 8px 0}
.tree a::before{content:"";position:absolute;left:9px;top:0;bottom:0;border-left:1px solid var(--line2)}
.tree a:last-child::before{bottom:50%}
.tree a::after{content:"";position:absolute;left:9px;top:50%;width:13px;border-top:1px solid var(--line2)}
.tree a:hover{color:var(--tx);background:var(--pan)}
.tree a[aria-current]{color:var(--tx);background:var(--pan2);font-weight:600}
.tree a[aria-current]::after{border-top:2px solid var(--y);margin-top:-1px}
.tree a[aria-current] span::after{content:"";display:inline-block;width:6px;height:6px;margin-left:9px;background:var(--y);border-radius:1px;vertical-align:middle}
.obj{margin:26px 0 0;padding:16px 0 0;border-top:1px solid var(--line);font:400 12px/1.4 var(--fm)}
.obj div{display:flex;align-items:baseline;gap:8px;padding:5px 0}
.obj dt{flex:1;display:flex;align-items:baseline;gap:8px;color:var(--mu);min-width:0}
.obj dt::after{content:"";flex:1;min-width:10px;border-bottom:1px dotted var(--line2);transform:translateY(-3px)}
.obj dd{margin:0;color:var(--tx);font-weight:600;text-align:right;max-width:55%}
.ep{margin:auto 0 0;padding-top:20px;font:400 11.5px/1.5 var(--fm);color:var(--mu);overflow-wrap:anywhere}
.ep span{display:block}
.ep b{display:inline-block;margin-top:6px;padding:3px 8px;border:1px solid var(--line2);border-radius:5px;color:var(--tx);font-weight:400}
.ep b:empty{display:none}

/* page frame */
.page{margin-left:var(--sw);min-width:0}
main{max-width:1200px;padding:0 56px;min-width:0}
.top{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:68px;border-bottom:1px solid var(--line);margin-bottom:60px}
.path{margin:0;font:400 13px/1.4 var(--fm);color:var(--mu);min-width:0}
.path ol{display:flex;flex-wrap:wrap;list-style:none;margin:0;padding:0}
.path li{display:flex;align-items:center}
.path li+li::before{content:"/";margin:0 9px;color:var(--line2)}
.path li:first-child::before,.path>span::before{content:"~/";color:var(--y);margin-right:2px}
.path a{color:var(--mu);text-decoration:none;display:inline-flex;align-items:center;min-height:44px}
.path a:hover{color:var(--tx)}
.path [aria-current]{color:var(--tx)}

/* headings */
h1{font-size:clamp(36px,4.1vw,60px);line-height:1.03;letter-spacing:-.028em;margin-bottom:22px}
.cur{display:inline-block;width:.42em;height:.78em;margin-left:.14em;background:var(--y);vertical-align:-.04em;animation:blink 1.1s steps(1) infinite}
@keyframes blink{50%{opacity:0}}
.lead{font-size:19.5px;line-height:1.6;color:var(--mu);max-width:62ch;margin-bottom:26px}
.eyebrow{display:inline-block;font:600 12px/1.3 var(--fm);letter-spacing:.09em;text-transform:uppercase;color:var(--y);border:1px solid rgba(58,140,234,.4);border-radius:5px;padding:6px 10px;margin:0 0 22px}
.intro{max-width:880px;margin-bottom:44px}
.meta{font:400 13px/1.4 var(--fm);color:var(--mu);margin:-6px 0 20px}
.acts2{display:flex;flex-wrap:wrap;gap:12px;margin:0}

/* hero */
.hero{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,520px);gap:56px;align-items:start;margin-bottom:56px}
.hl,.hr{min-width:0}
.hr{position:relative}
.checks{list-style:none;margin:0 0 30px;padding:0;display:grid;gap:11px}
.checks li{display:flex;gap:12px;align-items:flex-start;font-size:16.5px;line-height:1.5}
.checks .ck{flex:none;margin-top:4px;color:var(--y)}
.checks.big{gap:0;margin:0;border-top:1px solid var(--line)}
.checks.big li{padding:16px 0;border-bottom:1px solid var(--line);color:var(--mu);font-size:16px}
.checks.big b{display:block;color:var(--tx);font:600 16.5px/1.35 var(--fb);margin-bottom:3px}

/* facts strip */
.strip{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));margin:0 0 8px;border:1px solid var(--line);border-radius:12px;background:var(--pan);overflow:hidden}
.strip div{display:flex;flex-direction:column-reverse;justify-content:flex-end;gap:6px;padding:18px 20px;border-left:1px solid var(--line);min-width:0}
.strip div:first-child{border-left:0}
.strip dt{font:400 12px/1.4 var(--fm);color:var(--mu)}
.strip dd{margin:0;font:600 21px/1.15 var(--fm);color:var(--tx);letter-spacing:-.02em;overflow-wrap:anywhere}
.strip div:first-child dd,.strip div:nth-child(2) dd{color:var(--y)}
.strip.big{margin-bottom:60px}
.strip.big div{padding:24px 22px}
.strip.big dd{font-size:27px}

/* reference rows */
main{counter-reset:sec}
.sec{display:grid;grid-template-columns:230px minmax(0,1fr);gap:20px 56px;padding:60px 0;border-top:1px solid var(--line);margin-top:52px}
.sec+.sec,.strip+.sec{margin-top:0}
.rh{min-width:0}
.rb{min-width:0}
.rh h2{position:sticky;top:24px;font-size:29px}
.sec:not(.doc){counter-increment:sec}
.sec:not(.doc) .rh h2::before{content:"#" counter(sec,decimal-leading-zero);display:block;font:600 13px/1 var(--fm);letter-spacing:.04em;color:var(--y);margin-bottom:14px}
.sec.doc{padding-top:52px}

.params{margin:0}
.params div{display:grid;grid-template-columns:minmax(0,250px) minmax(0,1fr);gap:8px 32px;padding:20px 0;border-bottom:1px solid var(--line)}
.params div:first-child{padding-top:4px}
.params dt{font:600 15px/1.45 var(--fm);color:var(--tx);position:relative;padding-left:18px}
.params dt::before{content:"";position:absolute;left:0;top:.5em;width:7px;height:7px;background:var(--y);border-radius:1px}
.params dd{margin:0;color:var(--mu);font-size:16.5px;line-height:1.6}

.steps{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:28px;counter-reset:st}
.steps li{counter-increment:st;position:relative;padding-top:58px;min-width:0}
.steps li::before{content:counter(st);position:absolute;left:0;top:0;width:38px;height:38px;display:grid;place-items:center;background:var(--y);color:var(--ink);font:600 16px/1 var(--fm);border-radius:8px}
.steps li::after{content:"";position:absolute;left:50px;right:-16px;top:19px;border-top:1px dashed var(--line2)}
.steps li:last-child::after{right:0}
.steps h3{font-size:20px;margin-bottom:8px}
.steps p{color:var(--mu);font-size:16px;margin:0}

.notes{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.note2{display:flex;gap:16px;padding:20px 22px;background:var(--pan);border:1px solid var(--line);border-left:3px solid var(--y);border-radius:3px 12px 12px 3px;min-width:0}
.note2 .gl{flex:none;color:var(--y);margin-top:1px}
.note2.n1,.note2.n2{border-left-color:var(--tx)}
.note2.n1 .gl,.note2.n2 .gl{color:var(--tx)}
.note2 h3{font:600 17.5px/1.3 var(--fb);letter-spacing:0;margin-bottom:6px}
.note2 p{margin:0;color:var(--mu);font-size:16px;line-height:1.55}
.note2 div{min-width:0}

/* faq */
.faq{border-top:1px solid var(--line)}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:60px;padding:14px 0;cursor:pointer;list-style:none;font:600 17.5px/1.35 var(--fb)}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"";flex:none;width:28px;height:28px;border:1px solid var(--line2);border-radius:6px;background:linear-gradient(var(--y),var(--y)) center/12px 2px no-repeat,linear-gradient(var(--y),var(--y)) center/2px 12px no-repeat}
.faq details[open] summary::after{background:linear-gradient(var(--ink),var(--ink)) center/12px 2px no-repeat,var(--y);border-color:var(--y)}
.faq summary:hover{color:#ffffff}
.faq details p{color:var(--mu);max-width:70ch;margin:0 0 20px;font-size:16.5px}

/* closing */
.close{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:24px 40px;margin:8px 0 72px;padding:38px 42px;background:var(--y);color:var(--ink);border-radius:14px;position:relative;overflow:hidden}
.close::after{content:"#";position:absolute;right:-12px;bottom:-78px;font:700 260px/1 var(--fd);color:rgba(10,14,21,.09);pointer-events:none}
.close>div{min-width:0;position:relative;z-index:1}
.close h2{font-size:clamp(26px,2.6vw,36px);margin-bottom:8px}
.close p{margin:0;max-width:52ch;font-size:17px;color:#121d2c}
.close .btn{background:var(--ink);border-color:var(--ink);color:var(--y);min-height:52px;padding:12px 26px;font-size:16.5px}
.close .btn:hover{background:#1a1f28;color:#8abdf8}
.close :focus-visible{outline-color:var(--ink)}

/* panes: signup, calculator, support */
.pane{background:var(--pan);border:1px solid var(--line2);border-top:3px solid var(--y);border-radius:4px 4px 14px 14px;padding:26px 26px 24px;min-width:0}
.keygrid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,470px);grid-template-areas:"kh kf" "kb kf";gap:8px 64px;align-items:start;margin-bottom:20px}
.kh{grid-area:kh;min-width:0}.kb{grid-area:kb;min-width:0}
.kf{grid-area:kf;min-width:0;position:sticky;top:24px}
.p-key h1,.p-support h1{font-size:clamp(34px,3.5vw,50px)}
.form{min-width:0}
.tabs2{display:grid;grid-template-columns:1fr 1fr;gap:4px;padding:4px;background:var(--code);border:1px solid var(--line);border-radius:10px;margin:0 0 18px}
.tabs2 button{min-height:44px;border:0;border-radius:7px;background:transparent;color:var(--mu);font:600 15px/1.2 var(--fb);cursor:pointer}
.tabs2 button:hover{color:var(--tx)}
.tabs2 button.on,.tabs2 button.active,.tabs2 button[aria-selected="true"],.tabs2 button[aria-pressed="true"]{background:var(--pan2);color:var(--tx);box-shadow:inset 0 -2px 0 var(--y)}
.msg{font-size:15px;line-height:1.5;margin:0 0 14px;padding:11px 14px;border:1px solid var(--line2);border-radius:8px;background:var(--pan2);color:var(--tx)}
.msg:empty{display:none}
.msg.err{border-color:var(--err);color:var(--err);background:rgba(132,255,210,.08)}

form .row{margin:0 0 14px}
label{display:block;font:600 13px/1.3 var(--fm);color:var(--mu);margin:0 0 7px;letter-spacing:.02em}
input,select,textarea{width:100%;min-height:46px;padding:10px 13px;background:var(--code);border:1px solid var(--line2);border-radius:8px;color:var(--tx);font:400 16px/1.4 var(--fb)}
textarea{min-height:130px;resize:vertical}
input::placeholder,textarea::placeholder{color:#76828b}
input:focus,select:focus,textarea:focus{outline:2px solid var(--y);outline-offset:1px;border-color:var(--y)}
.note{font-size:13.5px;line-height:1.5;color:var(--mu);margin:10px 0 14px}
.form .btn[data-submit],.support button,form[data-support] button{width:100%;min-height:50px;font-size:16.5px}
.support button,form[data-support] button{display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--y);border-radius:9px;background:var(--y);color:var(--ink);font:600 16.5px/1.2 var(--fb);cursor:pointer;padding:10px 20px}
form[data-support] button:hover{background:#6aabf6}
form[data-support] output,form[data-support] .out,.support [data-out]{display:block;margin-top:12px;font-size:15px;color:var(--tx)}
.pane a.btn.ghost{width:100%;min-height:48px}
.pane a.btn.ghost svg{flex:none}
.keyout{display:none}
.keyout.on{display:block}
.keybox{display:flex;align-items:center;gap:12px;font:600 14.5px/1.5 var(--fm);color:var(--y);background:var(--code);border:1px dashed var(--y);border-radius:8px;padding:10px 10px 10px 14px;margin:0 0 14px}
.keybox span{flex:1;min-width:0;overflow-wrap:anywhere;word-break:break-all}
.keyout h3{font-size:21px;margin:0 0 12px}
.keyout p{font-size:15px;color:var(--mu)}
.keyout code{font:400 13.5px var(--fm);color:var(--tx);overflow-wrap:anywhere}
.acts{display:flex;flex-wrap:wrap;gap:10px;margin:0 0 12px}
.acts .btn{flex:1 1 auto}
.sidecard{margin-top:26px;padding:22px 0 0;border-top:1px solid var(--line)}
.sidecard .sh{font:700 20px/1.2 var(--fd);margin:0 0 8px}
.sidecard p{color:var(--mu);font-size:15.5px;line-height:1.55}
.sidecard .btn{margin-top:4px}
.kb .sidecard{margin-top:10px;border-top:0;padding-top:0;max-width:52ch}

/* pricing split */
.split{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,440px);gap:56px;align-items:start;margin-bottom:8px}
.sl,.sr{min-width:0}
.sr{position:sticky;top:24px}
.sl h2{font-size:29px;margin-bottom:22px}
.examples{list-style:none;margin:0;padding:0;counter-reset:ex;border-top:1px solid var(--line)}
.examples li{counter-increment:ex;position:relative;padding:20px 0 20px 62px;border-bottom:1px solid var(--line)}
.examples li::before{content:counter(ex,decimal-leading-zero);position:absolute;left:0;top:22px;font:600 13px/1 var(--fm);color:var(--y);border:1px solid rgba(58,140,234,.45);border-radius:5px;padding:6px 8px}
.examples h3{font:600 18px/1.3 var(--fb);letter-spacing:0;margin-bottom:6px}
.examples p{margin:0;color:var(--mu);font-size:16px}
.calc{display:grid;gap:14px;min-width:0}
.calc label{margin:0}
.calc input{font-family:var(--fm);margin-top:7px}
.calc output,#cr{display:block;font:600 30px/1.2 var(--fm);color:var(--y);letter-spacing:-.02em;padding:16px 0 2px;border-top:1px dashed var(--line2);overflow-wrap:anywhere}
.calc p{margin:0;color:var(--mu);font-size:14px}

/* code */
.codebox{border:1px solid var(--line2);border-radius:12px;background:var(--code);overflow:hidden;min-width:0}
.codetabs{display:flex;gap:2px;padding:0 8px;background:var(--pan);border-bottom:1px solid var(--line);overflow-x:auto}
.codetabs button{flex:none;min-height:46px;padding:0 14px;border:0;border-bottom:2px solid transparent;background:transparent;color:var(--mu);font:600 13.5px/1 var(--fm);cursor:pointer}
.codetabs button:hover{color:var(--tx)}
.codetabs button[aria-selected="true"]{color:var(--y);border-bottom-color:var(--y)}
pre.code{position:relative;margin:0 0 1.4em;padding:54px 20px 20px;background:var(--code);border:1px solid var(--line2);border-radius:12px;color:#c8d5de;font:400 13.5px/1.7 var(--fm);overflow-x:auto;max-width:100%;tab-size:2;background-image:linear-gradient(var(--pan),var(--pan));background-size:100% 44px;background-repeat:no-repeat;background-attachment:local}
.codebox pre.code{margin:0;border:0;border-radius:0;background-image:none;padding-top:20px;padding-right:20px}
pre.code code{font:inherit;background:none;border:0;padding:0;white-space:pre;color:inherit}
pre.code .k{color:var(--y)}
pre.code .s{color:#c2dcf2}
pre.code .c{color:#78848f;font-style:italic}
button.copy{position:absolute;top:0;right:4px;min-width:44px;min-height:44px;padding:0 12px;border:0;border-radius:6px;background:transparent;color:var(--mu);font:600 12px/1 var(--fm);letter-spacing:.04em;cursor:pointer}
button.copy:hover{color:var(--y)}
.codebox button.copy{top:4px;right:6px;background:var(--code);border:1px solid var(--line);min-height:44px}

/* prose */
.prose{max-width:740px;min-width:0;font-size:17.5px;line-height:1.72}
.prose>*{max-width:100%}
.prose h2{position:relative;font-size:30px;margin:2em 0 .65em;scroll-margin-top:24px}
.prose h2:first-child{margin-top:0}
.prose h2::before{content:"#";position:absolute;left:-.82em;top:0;color:var(--y);font-weight:500}
.prose h3{font-size:21.5px;margin:1.7em 0 .5em}
.prose p,.prose li{color:#c4d0d8}
.prose ul,.prose ol{padding-left:1.25em;margin:0 0 1.2em}
.prose li{margin-bottom:.45em}
.prose ul li::marker{color:var(--y)}
.prose ol li::marker{color:var(--y);font:600 .9em var(--fm)}
.prose strong{color:var(--tx)}
.prose :not(pre)>code{font:400 .86em var(--fm);background:var(--pan2);border:1px solid var(--line);border-radius:5px;padding:2px 6px;overflow-wrap:anywhere}
.prose blockquote{margin:0 0 1.2em;padding:16px 20px;background:var(--pan);border-left:3px solid var(--y);border-radius:3px 10px 10px 3px}
.prose blockquote p:last-child{margin:0}
.prose table{display:block;width:max-content;max-width:100%;overflow-x:auto;border-collapse:collapse;margin:0 0 1.4em;border:1px solid var(--line2);border-radius:10px;font-size:15.5px;line-height:1.5}
.prose th,.prose td{padding:11px 16px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
.prose th{background:var(--pan);font:600 12.5px/1.4 var(--fm);letter-spacing:.04em;text-transform:uppercase;color:var(--mu);white-space:nowrap}
.prose tr:last-child td{border-bottom:0}
.prose td:first-child{color:var(--tx);font-weight:600}
.prose td{color:#c4d0d8}
.legal{margin-bottom:72px}

/* reader (docs, article) */
.reader{display:grid;grid-template-columns:minmax(0,740px) minmax(0,260px);gap:64px;align-items:start;margin-bottom:20px}
.reader .prose{grid-column:1;grid-row:1}
.rail{grid-column:2;grid-row:1;position:sticky;top:24px;min-width:0;max-height:calc(100vh - 48px);overflow-y:auto}
.toc ol{list-style:none;margin:0;padding:0;border-left:1px solid var(--line2)}
.toc a{display:block;margin-left:-1px;padding:7px 0 7px 16px;border-left:2px solid transparent;color:var(--mu);text-decoration:none;font-size:14.5px;line-height:1.4}
.toc a:hover{color:var(--tx)}
.toc a.on{color:var(--tx);border-left-color:var(--y)}
.takeaways{margin:0 0 40px;padding:22px 24px;background:var(--pan);border:1px solid var(--line);border-left:3px solid var(--y);border-radius:3px 12px 12px 3px}
.takeaways ul{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.takeaways li{position:relative;padding-left:22px;margin:0;color:var(--tx);font-size:16.5px;line-height:1.55}
.takeaways li::before{content:"";position:absolute;left:0;top:.6em;width:8px;height:8px;background:var(--y);border-radius:1px}

/* 404 */
.nf{padding:6vh 0 90px;max-width:760px}
.nfmark{margin-bottom:30px}
.nfmark .mark{width:84px;height:84px;transform:rotate(-8deg)}

/* footer */
.foot{max-width:1200px;padding:26px 56px 34px;border-top:1px solid var(--line);margin-top:36px}
.fl{display:flex;flex-wrap:wrap;gap:0 26px;margin:0 0 8px}
.fl a{display:inline-flex;align-items:center;min-height:44px;color:var(--mu);text-decoration:none;font:400 13.5px/1.3 var(--fm)}
.fl a:hover{color:var(--y)}
.legalnote{margin:0;color:var(--mu);font-size:13.5px;line-height:1.55;max-width:90ch}

/* ---------- narrower desktop ---------- */
@media (max-width:1320px){
main{padding:0 40px}.foot{padding-left:40px;padding-right:40px}
.hero{grid-template-columns:minmax(0,1fr) minmax(0,460px);gap:40px}
.sec{grid-template-columns:190px minmax(0,1fr);gap:20px 40px}
.keygrid{gap:8px 44px;grid-template-columns:minmax(0,1fr) minmax(0,430px)}
.reader{gap:44px;grid-template-columns:minmax(0,1fr) minmax(0,230px)}
.split{gap:40px;grid-template-columns:minmax(0,1fr) minmax(0,400px)}
}
@media (max-width:1180px){
.hero{grid-template-columns:minmax(0,1fr)}
.strip{grid-template-columns:repeat(6,minmax(0,1fr))}
.strip div{grid-column:span 2;border-top:1px solid var(--line)}
.strip div:nth-child(-n+2){grid-column:span 3;border-top:0}
.strip div:nth-child(3){border-left:0}
}

/* ---------- mobile / tablet: top bar ---------- */
@media (max-width:980px){
html{scroll-padding-top:76px}
.side{position:sticky;top:0;bottom:auto;width:auto;height:auto;padding:0;border-right:0;border-bottom:1px solid var(--line);overflow:visible;display:block}
.bar{margin:0;padding:8px 14px;gap:8px;min-height:60px}
.logo{font-size:17px;gap:8px}
.logo .mark{width:28px;height:28px}
.mcta{display:inline-flex;padding:8px 12px;font-size:14px;white-space:nowrap}
.burger{display:grid;place-items:center;flex:none;width:44px;height:44px;padding:0;border:1px solid var(--line2);border-radius:9px;background:transparent;color:var(--tx);cursor:pointer}
.nav{display:none;position:absolute;left:0;right:0;top:100%;background:var(--side);border-bottom:1px solid var(--line2);padding:10px 16px 20px;max-height:calc(100vh - 60px);overflow-y:auto;box-shadow:0 24px 40px rgba(0,0,0,.5)}
.nav.open{display:flex}
.tree{margin-bottom:14px}
.tree a{min-height:48px;font-size:16.5px}
.obj{margin-top:18px}
.ep{margin-top:6px;padding-top:12px}
.page{margin-left:0}
main{padding:0 18px}
.foot{padding:22px 18px 30px}
.top{min-height:48px;margin-bottom:34px}
.top .btn{display:none}
h1{font-size:clamp(33px,8.6vw,48px);margin-bottom:18px}
.lead{font-size:18px}
.hero{gap:34px;margin-bottom:36px}
.sec{grid-template-columns:minmax(0,1fr);padding:44px 0;gap:22px;margin-top:40px}
.rh h2{position:static;font-size:27px}
.sec:not(.doc) .rh h2::before{margin-bottom:10px}
.sec.doc .rh{display:none}
.prose h2{font-size:26px}
.prose h2::before{position:static;margin-right:.3em}
.keygrid,.keygrid.sup{grid-template-columns:minmax(0,1fr);grid-template-areas:"kh" "kf" "kb";gap:6px}
.kf{position:static;margin-bottom:26px}
.p-key .lead{margin-bottom:20px}
.split{grid-template-columns:minmax(0,1fr);gap:34px}
.sr{position:static;grid-row:1}
.reader{grid-template-columns:minmax(0,1fr);gap:30px}
.reader .prose,.rail{grid-column:1;grid-row:auto}
.rail{position:static;max-height:none;padding:18px 18px 10px;background:var(--pan);border:1px solid var(--line);border-radius:12px}
.rail .sidecard{display:none}
.toc a{padding:11px 0 11px 16px;font-size:15.5px}
.close{padding:30px 24px;margin-bottom:48px}
.close .btn{width:100%}
.strip.big{margin-bottom:40px}
}
@media (max-width:640px){
body{font-size:16.5px}
.strip,.strip.big{grid-template-columns:repeat(2,minmax(0,1fr))}
.strip div,.strip.big div{grid-column:auto;padding:15px 16px;border-top:1px solid var(--line);border-left:1px solid var(--line)}
.strip div:nth-child(-n+2){grid-column:auto;border-top:1px solid var(--line)}
.strip div:first-child{grid-column:1/-1;border-top:0;border-left:0}
.strip div:nth-child(2),.strip div:nth-child(4){border-left:0}
.strip div:nth-child(3){border-left:1px solid var(--line)}
.strip dd,.strip.big dd{font-size:19px}
.strip div:first-child dd{font-size:24px}
.params div{grid-template-columns:minmax(0,1fr);padding:16px 0}
.steps{grid-template-columns:minmax(0,1fr);gap:26px}
.steps li{padding:0 0 0 56px;min-height:40px}
.steps li::after{left:19px;right:auto;top:44px;bottom:-22px;border-top:0;border-left:1px dashed var(--line2)}
.steps li:last-child::after{display:none}
.notes{grid-template-columns:minmax(0,1fr)}
.note2{padding:17px 16px;gap:13px}
.pane{padding:20px 16px 18px}
.acts2 .btn{flex:1 1 100%}
.examples li{padding-left:54px}
pre.code{font-size:12.8px;padding-left:15px;padding-right:15px}
.faq summary{font-size:16.5px}
.prose{font-size:16.8px}
.prose table{font-size:14.5px}
.prose th,.prose td{padding:9px 12px}
}
@media (max-width:380px){
.logo{font-size:15.5px}
.mcta{padding:8px 10px;font-size:13.5px}
}
@media (prefers-reduced-motion:reduce){
html{scroll-behavior:auto}
.cur{animation:none}
.btn{transition:none}
}
/* review fixes */
.codebox pre.code{padding-top:56px}
.strip+.sec{border-top:0;padding-top:52px}
.calc output,#cr{border-top:0;padding:4px 0 0}
.calc>div:last-child{border-top:1px dashed var(--line2);padding-top:14px;margin-top:4px}
@media (max-width:980px){
.path ol{flex-wrap:nowrap}
.path li{min-width:0;flex:none}
.path li:last-child{flex:1 1 auto;display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;line-height:44px}
.path li:last-child::before{display:inline}
.strip+.sec{padding-top:40px}
}
@media (min-width:981px){.keygrid{grid-template-rows:auto 1fr}}