:root{--ink:#1b2a3a;--muted:#516275;--line:#dfe5ea;--accent:#ec971e;--accent-dk:#e84a23;--navy:#22303f}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:100px}
body{font-family:system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;color:var(--ink);background:#fff;font-size:15px;line-height:1.6}
a{color:inherit}
:focus-visible{outline:3px solid var(--ink);outline-offset:3px;border-radius:4px}
.wrap{width:min(1160px,100% - 40px);margin-inline:auto}
.top{background:var(--accent);border-bottom:1px solid rgba(27,42,58,.18)}
.bar{display:flex;align-items:center;gap:20px;min-height:84px;padding:6px 0}
.logo{display:inline-flex;text-decoration:none}
.logo-img{height:64px;width:auto;display:block}
.ttl{flex:1}
h1{font-size:1.25rem;line-height:1.2}
.ttl p{font-size:.72rem;line-height:1.3}
.btn-dark{background:var(--navy);color:#fff;text-decoration:none;font-weight:600;padding:11px 22px;border-radius:8px}
.btn-dark:hover{background:var(--ink)}
main{max-width:460px;margin:0 auto;padding:22px 20px 40px}
.card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:24px;box-shadow:0 12px 30px -20px rgba(27,42,58,.35)}
h2{font-size:1.15rem;margin-bottom:14px}
label{display:block;font-size:.8rem;font-weight:650;margin-bottom:14px}
input{display:block;width:100%;padding:11px 12px;border:1px solid #c7d1d8;border-radius:6px;margin-top:6px;font:inherit;color:var(--ink)}
button{border:0;border-radius:6px;padding:12px 18px;background:var(--accent);color:#000;cursor:pointer;font:inherit;font-size:.85rem;font-weight:650}
button:hover{filter:brightness(.93)}button:disabled{opacity:.5;cursor:wait}
.wide{margin-top:14px}
.hint{font-size:.75rem;color:#627480;margin-top:12px}
.error{color:#a80c26}
#feedback:not(:empty){background:#203e42;color:#fff;padding:12px 16px;border-radius:8px;margin-bottom:16px;font-size:.85rem}
.contact{background:var(--navy);color:#fff;padding:72px 0}
.contact-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:48px;align-items:center}
.contact h2{font-size:clamp(1.6rem,3vw,2.2rem);line-height:1.2}
.lead{color:#c8d3de;margin-top:16px;font-size:1.05rem;max-width:34em}
.cta-col{display:flex;flex-direction:column;gap:14px}
.btn{display:flex;justify-content:center;padding:14px 26px;border-radius:8px;font-weight:600;text-decoration:none;border:2px solid transparent}
.btn-solid{background:var(--accent);border-color:var(--accent);color:var(--ink)}
.btn-solid:hover{background:var(--accent-dk);border-color:var(--accent-dk)}
.btn-ghost{color:#fff;border-color:#fff}
.btn-ghost:hover{background:#fff;color:var(--ink)}
.link{color:#fff;text-align:center;font-size:.9rem}
.foot{background:#fff;color:#555;border-top:1px solid var(--line);padding:56px 0 24px}
.foot-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr 1fr;gap:40px}
.foot h3{color:#000;font-size:1.05rem;margin-bottom:20px}
.foot ul{list-style:none;display:grid;gap:14px}
.foot a{text-decoration:none}
.foot ul a:hover{color:var(--accent-dk)}
.foot .logo-img{height:84px}
.foot-brand p{margin:20px 0;max-width:22em}
.social{display:flex;gap:18px;color:#000}
.libro{display:flex;align-items:center;gap:12px;color:#0a8ac9;line-height:1.3}
.libro img{height:44px;width:auto}
.foot-copy{margin-top:40px;padding-top:20px;border-top:1px solid var(--line);text-align:center;font-size:.85rem;color:#888}
.disc{margin-top:6px;font-size:.78rem}
@media(max-width:860px){
  .bar{flex-wrap:wrap}.ttl{flex-basis:100%;order:3}
  .contact-grid,.foot-grid{grid-template-columns:1fr}
  .contact{padding:48px 0}
}