:root{--bg:#f6f7f9;--tx:#0f172a;--mut:#475569;--ac:#f59e0b;--ac2:#0ea5e9;--dk:#0b1220;--card:#fff;--r:14px}
*{box-sizing:border-box}html{scroll-behavior:smooth}
body{margin:0;font:16px/1.55 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;color:var(--tx);background:var(--bg)}
a{color:inherit}
.top{position:sticky;top:0;z-index:5;display:flex;justify-content:space-between;align-items:center;gap:12px;padding:10px 20px;background:rgba(246,247,249,.92);backdrop-filter:blur(8px);border-bottom:1px solid #e2e8f0}
.marca{display:flex;align-items:center;gap:8px;font-weight:700;text-decoration:none}
.marca img{border-radius:8px}
.top nav{display:flex;gap:14px;flex-wrap:wrap}.top nav a{text-decoration:none;color:var(--mut);font-size:.95rem}
.hero,.bloque{max-width:1040px;margin:0 auto;padding:56px 20px}
.kicker{color:var(--ac);font-weight:800;letter-spacing:.08em;text-transform:uppercase;margin:0}
h1{font-size:clamp(1.9rem,4.5vw,3.1rem);line-height:1.12;margin:.3em 0}
h2{font-size:clamp(1.5rem,3vw,2.2rem);margin:0 0 .4em}
.lead{font-size:1.15rem;color:var(--mut);max-width:62ch}
.ctas{display:flex;gap:12px;flex-wrap:wrap;margin:22px 0}
.btn{display:inline-block;background:var(--ac);color:#111;font-weight:700;padding:13px 22px;border-radius:999px;text-decoration:none;border:2px solid var(--ac)}
.btn.sec{background:transparent;color:inherit;border-color:currentColor}
.btn.off{opacity:.55;cursor:not-allowed}
.btn:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid var(--ac2);outline-offset:3px}
.pasos{list-style:none;padding:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:12px}
.pasos li{background:var(--card);border-radius:var(--r);padding:14px;box-shadow:0 1px 3px rgba(0,0,0,.06)}
.pasos b{display:inline-grid;place-items:center;width:28px;height:28px;border-radius:50%;background:var(--dk);color:#fff;margin-right:8px}
.cards3,.cards2{list-style:none;padding:0;display:grid;gap:14px}
.cards3{grid-template-columns:repeat(auto-fit,minmax(230px,1fr))}.cards2{grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}
.cards3 li,.cards2 article{background:var(--card);border-radius:var(--r);padding:18px;box-shadow:0 1px 3px rgba(0,0,0,.06)}
h3{margin:.1em 0 .4em}
.descargas{list-style:none;padding:0;display:grid;gap:10px;grid-template-columns:repeat(auto-fit,minmax(230px,1fr))}
.descarga{display:flex;justify-content:space-between;align-items:center;gap:8px;background:var(--dk);color:#fff;padding:14px 16px;border-radius:var(--r);text-decoration:none}
.descarga span{font-size:.8rem;background:var(--ac);color:#111;padding:2px 8px;border-radius:999px}
.vacio{color:var(--mut);font-style:italic}
.nota,.mini{font-size:.85rem;color:var(--mut)}
.oscuro{background:var(--dk);color:#e2e8f0;max-width:none;padding-left:max(20px,calc((100% - 1000px)/2));padding-right:max(20px,calc((100% - 1000px)/2))}
.oscuro .lead,.oscuro .mini{color:#94a3b8}
.kit{display:grid;grid-template-columns:1.6fr 1fr;gap:24px;align-items:start}
.incluye{padding-left:1.1em}.incluye li{margin:.5em 0}
.precio{background:#111a2e;border:1px solid #1e293b;border-radius:var(--r);padding:22px;text-align:center}
.monto{font-size:2.6rem;font-weight:800;margin:0;color:#fff}.usd{margin:0;color:#94a3b8}
details{background:var(--card);border-radius:var(--r);padding:14px 18px;margin:10px 0}
summary{cursor:pointer;font-weight:700}
.yt{margin-top:18px}
.pie{text-align:center;padding:30px 20px;color:var(--mut);border-top:1px solid #e2e8f0}
.legal{max-width:760px;margin:0 auto;padding:40px 20px}.legal h1{font-size:2rem}
@media (max-width:760px){.kit{grid-template-columns:1fr}.top nav{display:none}}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
/* Calculadoras */
.grid{display:grid;gap:14px;grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}
.calc{background:var(--card);border-radius:var(--r);padding:18px;box-shadow:0 1px 3px rgba(0,0,0,.06);display:flex;flex-direction:column;gap:8px}
.calc h3{font-size:1.1rem}.calc .hint{margin:0;color:var(--mut);font-size:.9rem}
.calc label{display:flex;flex-direction:column;gap:4px;font-size:.9rem;font-weight:600;color:var(--mut)}
.calc input,.calc select{font:inherit;padding:9px 10px;border:1px solid #cbd5e1;border-radius:10px;background:#fff;color:var(--tx);width:100%;min-width:0}
.calc input:focus,.calc select:focus{outline:3px solid var(--ac2);outline-offset:1px}
.calc .row{display:flex;gap:8px}.calc .row select{width:auto}
.calc output{display:block;margin-top:6px;background:var(--dk);color:#e2e8f0;border-radius:10px;padding:12px;font-size:.95rem}
.calc output b{color:#fff}.warn{color:#fbbf24}.tiny{font-size:.8rem;opacity:.85}
h2 small{display:block;font-size:.9rem;font-weight:400;color:var(--mut)}