:root{
  --bg:#f7f8fb;--card:#ffffff;--ink:#1a2233;--muted:#5b6577;--line:#e3e7ef;
  --accent:#3b5bdb;--accent-dark:#2f4ac0;--accent-soft:#e8edff;
  --ok:#0f9d58;--radius:14px;--maxw:1080px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:'Segoe UI',system-ui,-apple-system,Roboto,Arial,sans-serif;background:var(--bg);color:var(--ink);line-height:1.65;font-size:16.5px}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 20px}

/* Header */
header.site{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50}
.nav{display:flex;align-items:center;gap:18px;height:62px}
.brand{font-weight:800;font-size:1.25rem;color:var(--ink);letter-spacing:-.3px}
.brand span{color:var(--accent)}
.nav ul{display:flex;gap:4px;list-style:none;margin-left:auto;flex-wrap:wrap}
.nav ul a{padding:7px 11px;border-radius:8px;color:var(--muted);font-weight:600;font-size:.92rem}
.nav ul a:hover,.nav ul a.on{background:var(--accent-soft);color:var(--accent);text-decoration:none}
.lang-switch{margin-left:8px;font-size:.85rem;font-weight:700;border:1px solid var(--line);border-radius:8px;padding:5px 10px;color:var(--muted)}

/* Hero */
.hero{padding:56px 0 40px;text-align:center}
.hero h1{font-size:clamp(1.7rem,4vw,2.6rem);letter-spacing:-.5px;line-height:1.2;margin-bottom:14px}
.hero p{color:var(--muted);max-width:720px;margin:0 auto;font-size:1.08rem}

/* Cards grid */
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:18px;margin:34px 0 54px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:24px;transition:.15s;display:block;color:var(--ink)}
.card:hover{transform:translateY(-3px);box-shadow:0 10px 28px rgba(30,50,120,.09);text-decoration:none;border-color:#c9d4f5}
.card .ico{font-size:1.9rem;margin-bottom:10px;display:block}
.card h2,.card h3{font-size:1.08rem;margin-bottom:6px}
.card p{color:var(--muted);font-size:.92rem}

/* Tool box */
.toolbox{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:28px;margin:26px 0;box-shadow:0 4px 18px rgba(30,50,120,.05)}
.toolbox label{display:block;font-weight:700;font-size:.9rem;margin:14px 0 5px}
.toolbox input[type=text],.toolbox input[type=url],.toolbox input[type=email],.toolbox input[type=tel],.toolbox input[type=number],.toolbox select,.toolbox textarea{
  width:100%;padding:11px 13px;border:1.5px solid var(--line);border-radius:10px;font-size:1rem;font-family:inherit;background:#fff;color:var(--ink)}
.toolbox input:focus,.toolbox select:focus,.toolbox textarea:focus{outline:none;border-color:var(--accent)}
.toolbox .row{display:flex;gap:14px;flex-wrap:wrap}
.toolbox .row>div{flex:1;min-width:180px}
.btn{display:inline-block;background:var(--accent);color:#fff;border:none;border-radius:10px;padding:12px 22px;font-size:1rem;font-weight:700;cursor:pointer;margin-top:16px;font-family:inherit}
.btn:hover{background:var(--accent-dark)}
.btn.sec{background:#eef1f7;color:var(--ink)}
.btn.sec:hover{background:#e2e7f2}
.result{margin-top:22px;padding:20px;background:#f4f6fb;border-radius:12px;text-align:center;display:none}
.result.show{display:block}
.result img,.result canvas{background:#fff;padding:10px;border-radius:10px;border:1px solid var(--line)}
.pw-out{font-family:ui-monospace,Consolas,monospace;font-size:1.25rem;word-break:break-all;background:#fff;border:1px solid var(--line);border-radius:10px;padding:14px;margin-bottom:10px}
.meter{height:8px;border-radius:6px;background:#e3e7ef;overflow:hidden;margin:8px 0 4px}
.meter i{display:block;height:100%;width:0;border-radius:6px;transition:.25s}
.chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:10px}
.chips label{display:flex;align-items:center;gap:6px;font-weight:600;font-size:.9rem;background:#f4f6fb;border:1px solid var(--line);border-radius:9px;padding:8px 12px;cursor:pointer;margin:0}
.copy-ok{color:var(--ok);font-weight:700;font-size:.9rem;display:none;margin-left:8px}
.sig-preview{background:#fff;border:1px solid var(--line);border-radius:10px;padding:18px;margin-top:14px;overflow-x:auto;text-align:left}
.out-list{list-style:none;margin-top:14px;text-align:left}
.out-list li{background:#fff;border:1px solid var(--line);border-radius:10px;padding:11px 14px;margin-bottom:8px;display:flex;justify-content:space-between;align-items:center;gap:10px;flex-wrap:wrap}
.out-list button{background:var(--accent-soft);color:var(--accent);border:none;border-radius:7px;padding:5px 11px;font-weight:700;cursor:pointer;font-family:inherit}
.txt-out{background:#fff;border:1px solid var(--line);border-radius:10px;padding:16px;margin-top:14px;text-align:left;white-space:pre-wrap}

/* Article layout */
main{padding:34px 0 60px}
.article{max-width:780px;margin:0 auto}
.article h1{font-size:clamp(1.55rem,3.5vw,2.2rem);letter-spacing:-.4px;line-height:1.25;margin-bottom:10px}
.article .meta{color:var(--muted);font-size:.9rem;margin-bottom:26px}
.article h2{font-size:1.35rem;margin:34px 0 12px;letter-spacing:-.3px}
.article h3{font-size:1.1rem;margin:24px 0 8px}
.article p{margin-bottom:15px}
.article ul,.article ol{margin:0 0 15px 24px}
.article li{margin-bottom:7px}
.article table{border-collapse:collapse;width:100%;margin:0 0 18px;font-size:.95rem}
.article th,.article td{border:1px solid var(--line);padding:9px 12px;text-align:left}
.article th{background:#f0f3fa}
.tablewrap{overflow-x:auto}
.callout{background:var(--accent-soft);border-left:4px solid var(--accent);border-radius:0 10px 10px 0;padding:14px 18px;margin:0 0 18px}
blockquote{border-left:4px solid var(--line);padding:4px 18px;color:var(--muted);margin:0 0 15px}

/* FAQ */
.faq{margin-top:38px}
.faq h2{font-size:1.35rem;margin-bottom:14px}
.faq details{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:0;margin-bottom:10px}
.faq summary{cursor:pointer;font-weight:700;padding:15px 18px;list-style:none;position:relative}
.faq summary::after{content:"+";position:absolute;right:18px;font-weight:800;color:var(--accent)}
.faq details[open] summary::after{content:"–"}
.faq .a{padding:0 18px 15px;color:#333c50}

/* Related */
.related{margin-top:46px;border-top:1px solid var(--line);padding-top:28px}
.related h2{font-size:1.2rem;margin-bottom:14px}
.related ul{list-style:none;display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:10px}
.related li a{display:block;background:var(--card);border:1px solid var(--line);border-radius:10px;padding:13px 15px;font-weight:600;font-size:.93rem;color:var(--ink)}
.related li a:hover{border-color:#c9d4f5;text-decoration:none;color:var(--accent)}

/* Breadcrumb */
.crumbs{font-size:.86rem;color:var(--muted);margin-bottom:18px}
.crumbs a{color:var(--muted)}

/* Footer */
footer.site{background:#101828;color:#c6cede;margin-top:30px;padding:40px 0 26px;font-size:.92rem}
footer.site .cols{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:24px;margin-bottom:26px}
footer.site h4{color:#fff;font-size:.95rem;margin-bottom:10px}
footer.site ul{list-style:none}
footer.site li{margin-bottom:6px}
footer.site a{color:#c6cede}
footer.site .fine{border-top:1px solid #2a3550;padding-top:16px;color:#8b96ad;font-size:.85rem}
/* ---- Móvil ---- */
@media(max-width:760px){
  .nav{flex-wrap:wrap;height:auto;padding:10px 20px 0;gap:8px}
  .brand{font-size:1.15rem}
  .lang-switch{margin-left:auto}
  .nav ul{order:3;width:100%;margin-left:0;flex-wrap:nowrap;overflow-x:auto;-webkit-overflow-scrolling:touch;gap:6px;padding:2px 0 10px;scrollbar-width:none}
  .nav ul::-webkit-scrollbar{display:none}
  .nav ul a{white-space:nowrap;padding:9px 13px;font-size:.92rem;background:#f2f4f9;border-radius:99px}
  .nav ul a.on{background:var(--accent-soft)}
  .hero{padding:32px 0 22px}
  .toolbox{padding:18px 14px}
  .toolbox .row{gap:10px}
  .btn{width:100%;text-align:center}
  .btn.sec{width:auto}
  .out-list button{min-width:44px;min-height:40px;font-size:1.05rem}
  .out-list li{padding:10px 12px}
  .chips label{padding:10px 12px}
  footer.site a{display:inline-block;padding:5px 0}
  .crumbs{font-size:.84rem}
  .pw-out{font-size:1.05rem}
  .sig-preview{padding:12px}
}