:root{
  --brand:#0b3b5a;     /* azul corporativo */
  --brand-2:#6b7785;   /* gris/azul secundario */
  --bg:#f6f8fb;
  --text:#1b2836;
  --muted:#5d6b7a;
  --white:#fff;
  --ring:#b8c6d8;
}

*{box-sizing:border-box}
html,body{margin:0;padding:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,'Helvetica Neue',Arial,sans-serif;color:var(--text);background:var(--bg);line-height:1.55}
img{max-width:100%;display:block}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
.container{width:min(1120px,92%);margin:0 auto}

.site-header{background:var(--white);border-bottom:1px solid #e8edf3;position:sticky;top:0;z-index:10}
.header-wrap{display:flex;align-items:center;gap:16px;padding:12px 0;justify-content:space-between}
.logo{height:56px}
.logo.small{height:38px}

.btn{background:var(--brand);color:#fff;border:none;border-radius:999px;padding:12px 20px;font-weight:600;display:inline-block}
.btn:hover{opacity:.9;text-decoration:none}
.btn-outline{background:transparent;color:var(--brand);border:2px solid var(--brand)}
.cta-row{display:flex;gap:12px;margin-top:16px;flex-wrap:wrap}

.hero{padding:48px 0}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:36px;align-items:center}
.lead{font-size:1.1rem;color:var(--muted)}
.bullets{margin:12px 0 0 0;padding:0 0 0 18px}
.video-wrap{position:relative;padding-top:56.25%;border-radius:16px;overflow:hidden;box-shadow:0 10px 30px rgba(11,59,90,.15);background:#000}
.video-wrap iframe{position:absolute;inset:0;width:100%;height:100%;border:0}

.instructor{padding:24px 0 8px}
.card{background:var(--white);padding:28px;border-radius:16px;box-shadow:0 10px 30px rgba(11,59,90,.08)}
.cols-3{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:20px;margin-top:16px}
.kpi{display:block;font-weight:700;color:var(--brand);font-size:1.1rem}

.form-section{padding:28px 0 64px}
h1,h2{margin:0 0 12px}
h2{font-size:1.6rem}
.muted{color:var(--muted)}
.form-field{display:flex;flex-direction:column;gap:6px}
.form-field input{border:1.5px solid var(--ring);border-radius:12px;padding:12px 14px;font-size:1rem;background:#fff}
.form-field input:focus{outline:3px solid rgba(11,59,90,.15);border-color:var(--brand)}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.check{display:flex;align-items:flex-start;gap:10px;margin:14px 0}
.form-note{color:var(--muted);margin-top:8px}
.hp{position:absolute !important;left:-9999px !important;opacity:0 !important;height:0 !important;width:0 !important}

.alert{margin-top:14px;padding:12px 14px;border-radius:10px}
.alert-ok{background:#eaf7f0;color:#0d6b33;border:1px solid #bfe3cd}
.alert-err{background:#fdeaea;color:#a12622;border:1px solid #f1b5b3}

.site-footer{padding:28px 0;border-top:1px solid #e8edf3;background:#fff;margin-top:32px}
.footer-grid{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}

@media (max-width: 900px){
  .hero-grid{grid-template-columns:1fr;gap:22px}
}