:root{--ink:#0f172a;--ink-soft:#475569;--violet:#6552f5;--violet-deep:#4b3bd1;--violet-tint:#eeecff;--mint:#14b8a6;--bg:#f6f7fb;--paper:#fff;--line:#e2e6f0;--danger:#b42318;--radius:18px;--sans:system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif}*,:before,:after{box-sizing:border-box}html{scroll-behavior:smooth}body{background:var(--bg);color:var(--ink);font:17px/1.65 var(--sans);-webkit-text-size-adjust:100%;margin:0}img,canvas{max-width:100%}a{color:var(--violet-deep);text-underline-offset:3px}a:hover{color:var(--ink)}h1,h2,h3{color:var(--ink);letter-spacing:-.02em;line-height:1.2}h1{margin:0 0 .5em;font-size:clamp(2rem,5vw,3.2rem)}h2{margin:0 0 .6em;font-size:clamp(1.45rem,3vw,2rem)}h3{margin:1.6em 0 .4em;font-size:1.15rem}[hidden]{display:none!important}.wrap{max-width:1100px;margin:0 auto;padding:0 20px}.narrow{max-width:760px;margin:0 auto;padding:0 20px}:focus-visible{outline:3px solid var(--violet);outline-offset:2px}.site-header{backdrop-filter:blur(8px);border-bottom:1px solid var(--line);z-index:20;background:#ffffffe6;position:sticky;top:0}.site-header .wrap{justify-content:space-between;align-items:center;gap:16px;min-height:64px;display:flex}.brand{color:var(--ink);white-space:nowrap;align-items:center;gap:10px;font-size:1.1rem;font-weight:800;text-decoration:none;display:flex}.brand-light{color:var(--ink-soft);font-weight:500}.brand-mark{background:linear-gradient(var(--paper),var(--paper)) 5px 5px/6px 6px no-repeat, linear-gradient(var(--paper),var(--paper)) 15px 5px/6px 6px no-repeat, linear-gradient(var(--paper),var(--paper)) 5px 15px/6px 6px no-repeat, linear-gradient(135deg, var(--violet), var(--mint));border-radius:8px;width:26px;height:26px}.nav{gap:22px;font-size:.95rem;display:flex}.nav a{color:var(--ink);border-bottom:2px solid #0000;padding:6px 0;text-decoration:none}.nav a:hover{border-bottom-color:var(--violet)}@media 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.label{margin-bottom:8px;font-size:.95rem;font-weight:650;display:block}.opt{color:var(--ink-soft);font-weight:400}.input,textarea.input{border:1.5px solid var(--line);width:100%;font:inherit;color:var(--ink);background:#fbfcff;border-radius:12px;padding:13px 14px;transition:border-color .15s,box-shadow .15s}textarea.input{resize:vertical;min-height:96px}.input:focus{border-color:var(--violet);background:#fff;outline:none;box-shadow:0 0 0 4px #6552f526}.hint{color:var(--ink-soft);margin:6px 0 0;font-size:.85rem}.error{color:var(--danger);margin:6px 0 0;font-size:.88rem}.row{grid-template-columns:1fr 1fr;gap:16px;display:grid}.color{border:1.5px solid var(--line);background:#fbfcff;border-radius:12px;align-items:center;gap:10px;padding:6px 12px 6px 6px;display:flex}.color input{cursor:pointer;background:0 0;border:0;border-radius:8px;width:40px;height:36px;padding:0}.color 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10px;display:block}.dl{flex-wrap:wrap;gap:10px;margin-top:18px;display:flex}.dl .btn{flex:150px;padding-left:14px;padding-right:14px}.preview .hint{text-align:center}.btn{background:var(--violet);color:#fff;font:inherit;border:1.5px solid var(--violet);cursor:pointer;text-align:center;border-radius:12px;padding:13px 22px;font-weight:650;text-decoration:none;transition:transform .12s,background .12s;display:inline-block}.btn:hover:not(:disabled){background:var(--violet-deep);border-color:var(--violet-deep);color:#fff;transform:translateY(-1px)}.btn:disabled{opacity:.45;cursor:not-allowed}.btn-ghost{color:var(--ink);border-color:var(--line);background:#fff}.btn-ghost:hover:not(:disabled){background:var(--violet-tint);border-color:var(--violet);color:var(--ink)}.btn-small{padding:9px 16px;font-size:.92rem}.btn-row{flex-wrap:wrap;gap:12px;margin-top:1.2em;display:flex}section.block{padding:56px 0 8px}.steps{counter-reset:s;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:18px;margin:24px 0 0;padding:0;list-style:none;display:grid}.steps li{counter-increment:s;background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:22px}.steps li:before{content:counter(s);background:var(--violet-tint);width:34px;height:34px;color:var(--violet-deep);border-radius:50%;place-items:center;margin-bottom:12px;font-weight:800;display:grid}.steps strong{margin-bottom:4px;display:block}.steps p{color:var(--ink-soft);margin:0;font-size:.96rem}.features{grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:18px;margin-top:24px;display:grid}.feature{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:24px;transition:transform .15s,box-shadow .15s,border-color .15s}.feature:hover{border-color:#cfc9ff;transform:translateY(-3px);box-shadow:0 14px 28px -14px #6552f559}.ficon{background:linear-gradient(135deg, 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