:root{
  --ink:#1C2A4A; --ink-2:#2B3A5E; --text:#1F2633; --muted:#5B6475; --line:#DCE1EA;
  --paper:#F3F5F8; --white:#FFFFFF; --label:#FFCF3F; --label-2:#FFE7A1; --ok:#1E7B4F; --warn:#9A5B00; --warn-bg:#FFF4DB;
  --round:ui-rounded,"SF Pro Rounded","Nunito","Segoe UI Variable Display","Segoe UI",Roboto,system-ui,sans-serif;
  --sans:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  --r:14px; color-scheme:light;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--text);font:16px/1.6 var(--sans)}
a{color:var(--ink);text-decoration-thickness:1px;text-underline-offset:3px}
a:hover{text-decoration-thickness:2px}
img,svg{max-width:100%}
:focus-visible{outline:3px solid var(--ink);outline-offset:2px;border-radius:4px}
.skip{position:absolute;left:-999px}.skip:focus{left:16px;top:8px;background:#fff;padding:8px 12px;z-index:9}
.wrap{max-width:1180px;margin:0 auto;padding:0 20px}

/* cabecera */
.site{background:var(--ink);color:#fff}
.site .wrap{display:flex;align-items:center;gap:24px;min-height:60px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:10px;color:#fff;text-decoration:none;font:800 20px/1 var(--round);letter-spacing:-.01em}
.brand svg{width:30px;height:30px}
.brand b{color:var(--label);font-weight:800}
.nav{display:flex;gap:4px;margin-left:auto;flex-wrap:wrap}
.nav a{color:#E4E9F3;text-decoration:none;padding:8px 12px;border-radius:999px;font-weight:600;font-size:15px}
.nav a:hover,.nav a[aria-current]{background:rgba(255,255,255,.12);color:#fff}

/* encabezado de página */
.lead{padding:28px 0 8px}
.crumbs{font-size:14px;color:var(--muted);margin:0 0 6px}
.crumbs a{color:var(--muted)}
h1,h2,h3{font-family:var(--round);color:var(--ink);letter-spacing:-.015em;line-height:1.15}
h1{font-size:clamp(28px,4.2vw,44px);margin:0 0 8px;font-weight:800;max-width:22ch}
.lead p.sub{font-size:18px;color:var(--muted);margin:0;max-width:62ch}
.trust{display:flex;flex-wrap:wrap;gap:8px 18px;list-style:none;padding:0;margin:14px 0 0;font-size:15px;color:var(--ink);font-weight:600}
.trust li{display:flex;align-items:center;gap:6px}
.trust svg{width:18px;height:18px;flex:none}

/* herramienta */
.tool{display:grid;grid-template-columns:minmax(0,1fr) minmax(320px,440px);grid-template-areas:"controls stage";gap:28px;align-items:start;margin:20px 0 36px}
.controls{grid-area:controls;display:grid;gap:16px}
.stage{grid-area:stage;position:sticky;top:16px;display:grid;gap:14px}
.box{background:var(--white);border:1px solid var(--line);border-radius:var(--r);padding:18px 20px;margin:0;min-width:0}
.box>legend,.box>h2{font:800 18px/1.2 var(--round);color:var(--ink);padding:0;margin:0 0 12px;float:left;width:100%}
.box>legend+*{clear:both}
.field{display:grid;gap:6px;margin-bottom:14px}
.field:last-child{margin-bottom:0}
label,.lbl{font-weight:650;font-size:15px}
.hint{font-size:13.5px;color:var(--muted);margin:0}
input[type=text],input[type=password],select{width:100%;font:inherit;font-size:17px;padding:11px 12px;border:1.5px solid #C5CCD8;border-radius:10px;background:#fff;color:var(--text)}
input[type=text]:focus,input[type=password]:focus,select:focus{border-color:var(--ink);outline:none;box-shadow:0 0 0 3px rgba(28,42,74,.15)}
.pass{display:flex;gap:8px}
.pass input{flex:1;min-width:0}
.btn-ghost{font:inherit;font-weight:650;font-size:14px;border:1.5px solid #C5CCD8;background:#fff;border-radius:10px;padding:0 14px;cursor:pointer;color:var(--ink)}
.btn-ghost:hover{border-color:var(--ink)}
.seg{display:flex;flex-wrap:wrap;gap:6px;border:0;padding:0;margin:0}
.seg label{position:relative;cursor:pointer}
.seg input{position:absolute;opacity:0;inset:0;cursor:pointer}
.seg span{display:block;padding:8px 13px;border:1.5px solid #C5CCD8;border-radius:999px;font-size:14.5px;font-weight:600;background:#fff;transition:background .12s}
.seg input:checked+span{background:var(--ink);border-color:var(--ink);color:#fff}
.seg input:focus-visible+span{outline:3px solid var(--label);outline-offset:2px}
.checks{display:grid;gap:8px}
.check{display:flex;gap:10px;align-items:flex-start;font-weight:500;font-size:15px;cursor:pointer}
.check input{width:20px;height:20px;margin:1px 0 0;accent-color:var(--ink);flex:none}
details.more summary{cursor:pointer;font-weight:650;font-size:14.5px;color:var(--ink)}
details.more[open] summary{margin-bottom:10px}
.designs{display:grid;grid-template-columns:repeat(auto-fill,minmax(88px,1fr));gap:10px}
.design{border:2px solid transparent;background:var(--paper);border-radius:12px;padding:7px 7px 6px;cursor:pointer;display:grid;gap:5px;font:inherit;color:var(--text)}
.design .thumb{display:block;aspect-ratio:1000/1414;border-radius:6px;overflow:hidden;box-shadow:0 1px 3px rgba(28,42,74,.18)}
.design .thumb svg{width:100%;height:100%;display:block}
.design .dname{font-size:13px;font-weight:650}
.design:hover{border-color:#C5CCD8}
.design[aria-pressed=true]{border-color:var(--ink);background:var(--label-2)}
.swatches{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.swatch{width:30px;height:30px;border-radius:50%;border:2px solid #fff;box-shadow:0 0 0 1.5px #C5CCD8;cursor:pointer;padding:0}
.swatch[aria-pressed=true]{box-shadow:0 0 0 3px var(--ink)}
input[type=color]{width:42px;height:32px;padding:0 2px;border:1.5px solid #C5CCD8;border-radius:8px;background:#fff;cursor:pointer}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.linkbtn{background:none;border:0;padding:0;font:inherit;font-size:14px;color:var(--ink);text-decoration:underline;cursor:pointer;justify-self:start}

/* vista previa */
.preview{display:flex;justify-content:center;align-items:center;background:
  repeating-linear-gradient(45deg,#E7EBF1 0 10px,#EDF0F5 10px 20px);border-radius:var(--r);padding:22px;min-height:200px}
.preview svg{display:block;width:100%;height:auto;max-height:620px;box-shadow:0 1px 2px rgba(28,42,74,.12),0 10px 28px -8px rgba(28,42,74,.35);border-radius:3px;background:#fff}
.preview.fmt-vertical svg{max-width:380px}
.preview.fmt-cuadrado svg{max-width:400px}
.preview.is-sample svg{opacity:.55;filter:grayscale(.35)}
.export{background:var(--white);border:1px solid var(--line);border-radius:var(--r);padding:16px 18px;display:grid;gap:10px}
.btn{font:inherit;font-weight:700;font-size:16px;border-radius:12px;padding:13px 16px;cursor:pointer;border:2px solid var(--ink);background:#fff;color:var(--ink);display:inline-flex;align-items:center;justify-content:center;gap:8px;text-decoration:none}
.btn svg{width:20px;height:20px}
.btn.primary{background:var(--ink);color:#fff}
.btn.primary:hover{background:var(--ink-2)}
.btn:disabled{opacity:.45;cursor:not-allowed}
.btn.busy{cursor:progress;opacity:.7}
.btn-row{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.pdf-row{display:grid;grid-template-columns:1fr auto;gap:8px}
.pdf-row select{font-size:15px;padding:10px}
.status{font-size:14px;color:var(--muted);margin:0;min-height:1.4em}
.warn p{background:var(--warn-bg);color:var(--warn);border-radius:10px;padding:8px 12px;margin:0 0 6px;font-size:14px}
.private{display:flex;gap:10px;font-size:13.5px;color:var(--muted);margin:0;align-items:flex-start}
.private svg{width:18px;height:18px;flex:none;margin-top:2px;color:var(--ok)}
.mbar{display:none}

/* contenido */
.content{display:grid;gap:12px;padding-bottom:48px}
.prose{max-width:740px}
.prose h2{font-size:clamp(24px,3vw,30px);margin:40px 0 12px}
.prose h3{font-size:20px;margin:28px 0 8px}
.prose p,.prose li{font-size:17px;line-height:1.7}
.prose li{margin-bottom:6px}
.prose code{background:#E8ECF3;border-radius:6px;padding:2px 6px;font-size:.92em}
.prose pre{background:var(--ink);color:#F2F4F8;border-radius:12px;padding:14px 16px;overflow:auto;font-size:14.5px}
.prose pre code{background:none;padding:0;color:inherit}
.prose table{border-collapse:collapse;width:100%;font-size:15.5px;margin:12px 0}
.prose th,.prose td{text-align:left;padding:9px 10px;border-bottom:1px solid var(--line);vertical-align:top}
.prose th{font-weight:700;color:var(--ink)}
.steps{counter-reset:s;list-style:none;padding:0;display:grid;gap:14px;margin:16px 0}
.steps li{counter-increment:s;display:grid;grid-template-columns:40px 1fr;gap:12px;align-items:start}
.steps li::before{content:counter(s);width:36px;height:36px;border-radius:50%;background:var(--label);color:var(--ink);font:800 18px/36px var(--round);text-align:center}
.note{background:#fff;border-left:5px solid var(--label);border-radius:0 12px 12px 0;padding:12px 16px;margin:18px 0}
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:16px;margin:16px 0}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--r);overflow:hidden;text-decoration:none;color:var(--text);display:grid}
.card img{display:block;width:100%;height:auto;aspect-ratio:1000/1414;object-fit:cover;background:var(--paper)}
.card span{padding:10px 12px 12px;display:grid;gap:2px}
.card b{font-family:var(--round);color:var(--ink);font-size:17px}
.card small{color:var(--muted);font-size:14px;line-height:1.4}
.card:hover{border-color:var(--ink)}
.links{list-style:none;padding:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:10px}
.links a{display:block;background:#fff;border:1px solid var(--line);border-radius:12px;padding:12px 14px;text-decoration:none;font-weight:650;height:100%}
.links a small{display:block;color:var(--muted);font-weight:400;font-size:14px;margin-top:2px}
.links a:hover{border-color:var(--ink)}
.faq details{background:#fff;border:1px solid var(--line);border-radius:12px;padding:0 16px;margin-bottom:10px}
.faq summary{cursor:pointer;font-weight:700;padding:14px 0;color:var(--ink);font-size:17px}
.faq details p{margin:0 0 14px}
.ad{margin:24px auto;text-align:center;min-height:280px}
.ad::before{content:"Publicidad";display:block;font-size:11px;color:#8A93A3;margin-bottom:4px}
.updated{font-size:14px;color:var(--muted)}

/* pie */
.foot{background:#fff;border-top:1px solid var(--line);padding:28px 0 90px;font-size:14.5px;color:var(--muted)}
.foot .wrap{display:grid;gap:12px}
.foot nav{display:flex;flex-wrap:wrap;gap:6px 18px}
.foot a{color:var(--muted)}

/* impresión */
#print-area{display:none}
@media print{
  body>*:not(#print-area){display:none!important}
  #print-area{display:block}
  .sheet{position:relative;overflow:hidden;page-break-after:always}
  .sheet img{position:absolute}
  .sheet .fold{position:absolute;border-top:1px dashed #aaa;border-left:1px dashed #aaa}
  .sheet .cut{position:absolute;border:.2mm solid #ccc;border-radius:2mm}
  body{background:#fff}
}

@media (max-width:860px){
  .tool{grid-template-columns:minmax(0,1fr);grid-template-areas:none;gap:14px}
  .controls,.stage,.preview,.export{grid-area:auto}
  .stage{display:contents}
  .preview{position:sticky;top:0;z-index:5;order:-1;padding:10px;border-radius:0 0 var(--r) var(--r);margin:0 -20px;box-shadow:0 6px 14px -10px rgba(28,42,74,.4)}
  .preview svg{height:30vh;width:auto;max-width:100%}
  .preview.fmt-horizontal svg{height:auto;width:100%;max-height:30vh}
  .preview.fmt-vertical svg,.preview.fmt-cuadrado svg{max-width:100%}
  .export{order:2}
  .controls{order:1}
  .mbar{display:flex;position:fixed;left:0;right:0;bottom:0;z-index:6;padding:10px 16px calc(10px + env(safe-area-inset-bottom));background:rgba(255,255,255,.96);border-top:1px solid var(--line)}
  .mbar .btn{flex:1}
  .tool:not(.ready)~.mbar{display:none}
  .lead{padding-top:18px}
}
@media (max-width:420px){.row2,.btn-row{grid-template-columns:1fr}.box{padding:16px}}
@media (prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}