:root{
  --bg:#f5f6f4;--surface:#fff;--ink:#14181c;--muted:#4b555e;--line:#d6dad6;
  --accent:#1d3fd1;--accent-ink:#fff;--code-bg:#0f1720;--code-ink:#dbe4ee;
  --warn-bg:#fff3d6;--warn-ink:#6b4500;--warn-line:#e8c26a;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
  --sans:"Onest",system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:1rem/1.6 var(--sans);overflow-x:hidden}
a{color:var(--accent)}
a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid var(--accent);outline-offset:2px}
.skip{position:absolute;left:-999px;top:0;background:var(--accent);color:var(--accent-ink);padding:.6rem 1rem;z-index:10}
.skip:focus{left:0}
.wrap{max-width:68rem;margin:0 auto;padding:0 1rem}
header.top{border-bottom:1px solid var(--line);background:var(--bg);position:sticky;top:0;z-index:5}
header.top .wrap{display:flex;flex-wrap:wrap;gap:.5rem 1.5rem;align-items:center;padding-top:.7rem;padding-bottom:.7rem}
.brand{font-weight:700;text-decoration:none;color:var(--ink);letter-spacing:-.01em}
.brand span{color:var(--muted);font-weight:400}
nav ul{display:flex;flex-wrap:wrap;gap:.2rem 1.1rem;list-style:none;margin:0;padding:0;font-size:.92rem}
nav a{color:var(--muted);text-decoration:none}
nav a:hover,nav a[aria-current]{color:var(--ink);text-decoration:underline}
h1,h2,h3{line-height:1.2;letter-spacing:-.02em;margin:0 0 .6em}
h1{font-size:clamp(1.9rem,5vw,3.1rem)}
h2{font-size:clamp(1.45rem,3vw,2rem)}
h3{font-size:1.12rem;margin-top:2rem}
p{margin:0 0 1em;max-width:68ch}
section{padding:3rem 0;border-top:1px solid var(--line)}
.hero{border-top:0;padding:3.5rem 0 3rem}
.hero .grid{display:grid;gap:2rem;grid-template-columns:minmax(0,1fr)}
@media(min-width:60rem){.hero .grid{grid-template-columns:minmax(0,1.05fr) minmax(0,1fr);align-items:center}}
.lead{font-size:1.15rem;color:var(--muted)}
.badge{display:inline-block;font-size:.85rem;background:var(--warn-bg);color:var(--warn-ink);border:1px solid var(--warn-line);border-radius:.4rem;padding:.25rem .65rem;margin-bottom:1.2rem}
.btns{display:flex;flex-wrap:wrap;gap:.7rem;margin-top:1.4rem}
.btn{display:inline-block;padding:.65rem 1.1rem;border-radius:.4rem;text-decoration:none;font-weight:600;border:1px solid var(--accent);background:var(--accent);color:var(--accent-ink)}
.btn.alt{background:transparent;color:var(--accent)}
.cards{display:grid;gap:1rem;grid-template-columns:repeat(auto-fill,minmax(min(100%,17rem),1fr))}
.card{background:var(--surface);border:1px solid var(--line);border-radius:.5rem;padding:1.1rem 1.2rem}
.card h3{margin:0 0 .4rem;font-size:1rem}
.card p{margin:0;font-size:.95rem;color:var(--muted)}
code{font-family:var(--mono);font-size:.88em;background:color-mix(in srgb,var(--line) 55%,transparent);padding:.1em .35em;border-radius:.25rem;overflow-wrap:anywhere}
.codewrap{position:relative;margin:0 0 1.2rem;max-width:100%}
pre{margin:0;background:var(--code-bg);color:var(--code-ink);border-radius:.5rem;padding:1rem;overflow-x:auto;font:.85rem/1.55 var(--mono);max-width:100%;tab-size:2}
pre code{background:none;padding:0;font-size:inherit;overflow-wrap:normal}
.copy{position:absolute;top:.4rem;right:.4rem;z-index:1;font:.75rem var(--sans);padding:.25rem .55rem;border-radius:.3rem;border:1px solid #4a5662;background:#1b2530;color:#dbe4ee;cursor:pointer}
.cap{font-size:.85rem;color:var(--muted);margin:0 0 .35rem}
.tablewrap{overflow-x:auto;max-width:100%;margin:0 0 1.2rem;border:1px solid var(--line);border-radius:.5rem;background:var(--surface)}
table{border-collapse:collapse;width:100%;min-width:34rem;font-size:.93rem}
th,td{text-align:left;padding:.6rem .8rem;border-bottom:1px solid var(--line);vertical-align:top}
tr:last-child td{border-bottom:0}
th{font-weight:600;background:color-mix(in srgb,var(--line) 35%,transparent)}
.diagram{background:var(--surface);border:1px solid var(--line);border-radius:.5rem;padding:1rem;overflow-x:auto}
.diagram svg{display:block;min-width:46rem;width:100%;height:auto;font-family:var(--sans)}
.diagram .box{fill:var(--bg);stroke:var(--line);stroke-width:1.5}
.diagram .own{fill:var(--bg);stroke:var(--accent);stroke-width:2}
.diagram text{fill:var(--ink);font-size:13px}
.diagram .sm{fill:var(--muted);font-size:11px;font-family:var(--mono)}
.diagram line,.diagram path{stroke:var(--muted);stroke-width:1.5;fill:none}
.diagram .skip-p{stroke-dasharray:5 4}
.three{display:grid;gap:1.2rem;grid-template-columns:repeat(auto-fit,minmax(min(100%,18rem),1fr))}
.three .card ul{margin:.3rem 0 0;padding-left:1.1rem;font-size:.95rem;color:var(--muted)}
.three .card li{margin-bottom:.35rem}
.note{border-left:4px solid var(--accent);padding:.1rem 0 .1rem 1rem;margin:0 0 1.2rem;max-width:68ch}
.checks{list-style:none;padding:0}
.checks li{padding:.35rem 0 .35rem 1.8rem;position:relative;max-width:70ch}
.checks li::before{content:"";position:absolute;left:0;top:.65rem;width:.9rem;height:.9rem;border:2px solid var(--accent);border-radius:.2rem}
.toc{columns:2 16rem;padding-left:1.1rem}
footer{border-top:1px solid var(--line);padding:2rem 0;color:var(--muted);font-size:.92rem}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
/* pomocnik.html: field definition helper */
textarea,input[type=text],select{font:inherit;color:var(--ink);background:var(--surface);border:1px solid var(--line);border-radius:.35rem;padding:.4rem .55rem;max-width:100%}
textarea{width:100%;font:.85rem/1.5 var(--mono);min-height:12rem;resize:vertical}
td textarea{min-height:0;width:12rem}
td input[type=text]{width:100%;min-width:9rem}
input[type=checkbox]{width:1.15rem;height:1.15rem;accent-color:var(--accent)}
textarea:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid var(--accent);outline-offset:1px}
textarea:disabled{opacity:.45}
.fieldtable{min-width:62rem}
tr.off td{opacity:.55}
tr.off td:first-child{opacity:1}
input.todo{border-color:var(--warn-line);background:var(--warn-bg);color:var(--warn-ink)}
.cnt{display:block;font-size:.78rem;color:var(--muted);margin-top:.2rem}
.cnt.bad,.rowerr{color:#b3261e}
.rowerr{font-size:.8rem;margin-top:.25rem}
.notecell{font-size:.85rem;color:var(--muted);min-width:11rem}
.alert{background:var(--warn-bg);color:var(--warn-ink);border:1px solid var(--warn-line);border-radius:.4rem;padding:.7rem 1rem;margin:0 0 1rem}
.alert ul{margin:.3rem 0 0;padding-left:1.2rem}
.tabs{display:flex;flex-wrap:wrap;gap:.3rem;margin:0 0 .6rem}
.tabs button{font:inherit;padding:.4rem .9rem;border-radius:.35rem;border:1px solid var(--line);background:var(--surface);color:var(--ink);cursor:pointer}
.tabs button[aria-selected=true]{background:var(--accent);color:var(--accent-ink);border-color:var(--accent)}
[hidden]{display:none!important}
/* playground.html */
.radios{border:0;padding:0;margin:0 0 1rem}
.radios label{display:block;padding:.2rem 0}
.status{font:700 1.1rem var(--mono);margin:0 0 .8rem}
.status.ok{color:#1b7a3d}
.status.bad{color:#b3261e}
/* index.html: business homepage (airy: generous section spacing, alternating backgrounds, no rules) */
.navcta{color:var(--accent)!important;font-weight:600}
.home{font-size:1.0625rem;line-height:1.7}
.home .wrap{padding:0 1.25rem}
.home section{border-top:0;padding:clamp(4rem,8vw,7.5rem) 0}
.home section.alt{background:var(--surface)}
.home .hero{padding:clamp(4.5rem,9vw,8rem) 0 clamp(4rem,7vw,6rem)}
.home .hero .grid{gap:3.5rem}
.home h2{font-size:clamp(1.7rem,3.4vw,2.4rem);letter-spacing:-.03em;margin-bottom:clamp(1.8rem,3.5vw,3rem)}
.home p{max-width:62ch}
.hero h1{font-size:clamp(2.2rem,5.2vw,3.5rem);line-height:1.1;letter-spacing:-.03em;font-weight:700;max-width:17ch;text-wrap:balance;margin-bottom:1.5rem}
.hero .lead{font-size:1.25rem;line-height:1.55;max-width:44ch}
.home .btns{align-items:center;gap:1.5rem;margin-top:2.2rem}
.home .btn{padding:.8rem 1.4rem}
.textlink{font-weight:600;text-decoration:none}
.textlink:hover{text-decoration:underline}
.demo{background:var(--surface);border:1px solid var(--line);border-radius:1rem;padding:1rem 1.1rem 1.2rem;box-shadow:0 18px 40px -24px color-mix(in srgb,var(--accent) 45%,transparent)}
.demo-tabs{display:flex;gap:.25rem;padding:.25rem;background:var(--bg);border-radius:.6rem;margin-bottom:1rem;width:max-content;max-width:100%}
.demo-tabs button{font:500 .9rem var(--sans);padding:.35rem .85rem;border:0;border-radius:.45rem;background:transparent;color:var(--muted);cursor:pointer}
.demo-tabs button[aria-selected=true]{background:var(--surface);color:var(--ink);box-shadow:0 1px 3px rgba(0,0,0,.12)}
.demo .q{margin:0 0 1rem auto;width:fit-content;max-width:85%;background:var(--accent);color:var(--accent-ink);padding:.6rem .9rem;border-radius:1rem 1rem .25rem 1rem;font-weight:500}
.demo-label{font-size:.8rem;color:var(--muted);margin:0 0 .35rem}
.chips{list-style:none;display:flex;flex-wrap:wrap;gap:.35rem;margin:0 0 1rem;padding:0}
.chips li{font-size:.85rem;padding:.2rem .6rem;border-radius:999px;background:color-mix(in srgb,var(--accent) 12%,var(--surface));color:var(--ink);border:1px solid color-mix(in srgb,var(--accent) 30%,transparent)}
.demo .a{margin:0 0 .8rem}
.sources{list-style:none;display:grid;gap:.4rem;margin:0;padding:0}
.sources li{display:flex;flex-direction:column;padding:.5rem .7rem;border:1px solid var(--line);border-left:3px solid var(--accent);border-radius:.4rem;background:var(--bg)}
.sources span{font-weight:600;font-size:.92rem}
.sources small{color:var(--muted);font-size:.8rem;overflow-wrap:anywhere}
.demo-body.swap{animation:swap .35s ease-out}
@keyframes swap{from{opacity:.2;transform:translateY(4px)}to{opacity:1;transform:none}}
@media(prefers-reduced-motion:reduce){.demo-body.swap{animation:none}}
.cols{display:grid;gap:2.5rem 3rem;grid-template-columns:repeat(auto-fit,minmax(min(100%,16rem),1fr))}
.cols h3,.steps h3{margin:0 0 .5rem;font-size:1.15rem}
.cols p,.steps p{color:var(--muted);margin:0}
.steps{list-style:none;counter-reset:s;display:grid;gap:2.5rem 3rem;grid-template-columns:repeat(auto-fit,minmax(min(100%,16rem),1fr));margin:0;padding:0}
.steps li{counter-increment:s}
.steps li::before{content:counter(s);display:block;font-size:2.4rem;font-weight:700;line-height:1;color:var(--accent);margin-bottom:.9rem}
.narrow>*{max-width:46rem}
.links{display:flex;flex-wrap:wrap;gap:.6rem 1.8rem;font-weight:600;margin-top:1.5rem}
.links a{text-decoration:none}
.links a:hover{text-decoration:underline}
.plain{padding-left:1.1rem;margin:0;color:var(--muted)}
.plain li{margin-bottom:.5rem}
.opt{font-weight:400;color:var(--muted)}
.signup{display:grid;gap:3rem;grid-template-columns:minmax(0,1fr)}
@media(min-width:60rem){.signup{grid-template-columns:minmax(0,.8fr) minmax(0,1fr)}}
.muted{color:var(--muted);font-size:.92rem}
#lead-form{display:grid;gap:.9rem;grid-template-columns:repeat(auto-fit,minmax(min(100%,14rem),1fr))}
#lead-form label{display:flex;flex-direction:column;gap:.3rem;font-weight:500;font-size:.92rem}
#lead-form .wide,#lead-form button,#lead-form .form-note{grid-column:1/-1}
#lead-form input,#lead-form select,#lead-form textarea{font:400 1rem var(--sans);color:var(--ink);background:var(--surface);border:1px solid var(--line);border-radius:.4rem;padding:.65rem .8rem;width:100%;min-height:0}
#lead-form button{justify-self:start;cursor:pointer;font:600 1rem var(--sans)}
#lead-form button:disabled{opacity:.6;cursor:wait}
.form-note{margin:0;min-height:1.5em}
.hp{position:absolute!important;left:-9999px;width:1px;height:1px;overflow:hidden}