/* Estilos extraídos de index.html: diseño limpio, accesible y responsive */

:root{
  --bg: #0b0f13; /* fondo oscuro elegante */
  --panel:#11161b;
  --soft:#182028;
  --brand:#29d391; /* acento verde energía */
  --text:#e6edf3;
  --muted:#a9b3be;
  --shadow: 0 10px 30px rgba(0,0,0,.35);
  --radius: 18px;
  --radius-sm: 12px;
  --maxw: 1080px;
  --gradient: radial-gradient(1200px 600px at 20% -10%, rgba(41,211,145,.12), transparent 60%),
              radial-gradient(1000px 500px at 120% 10%, rgba(41,211,145,.10), transparent 55%);
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", "Liberation Sans", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  background-image: var(--gradient);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}

/* Links and focus */
a{color:var(--brand); text-decoration:none}
a:hover{text-decoration:underline}
a:focus{outline:3px solid color-mix(in oklab, var(--brand) 40%, transparent); outline-offset:4px}

/* Header / Navigation */
header.site{
  position:sticky; top:0; z-index:20; backdrop-filter:saturate(140%) blur(10px);
  background: color-mix(in oklab, var(--bg) 80%, transparent);
  border-bottom: 1px solid #1e2630;
}
.wrap{max-width:var(--maxw); margin-inline:auto; padding: 18px 20px}
.brand{display:flex; gap:10px; align-items:center; font-weight:700; letter-spacing:.3px}
.brand .dot{width:10px; height:10px; background:var(--brand); border-radius:999px; box-shadow:0 0 0 4px rgba(41,211,145,.15)}
nav a{color:var(--muted); margin-left:16px}
nav a.active, nav a:hover{color:var(--text)}

/* Hero */
.hero{display:grid; grid-template-columns: 1.15fr .85fr; gap:36px; align-items:center; padding: clamp(28px, 6vw, 60px) 20px}
.hero-card{background:linear-gradient(180deg, rgba(17,22,27,.9), rgba(17,22,27,.6)); border:1px solid #1e2630; border-radius:var(--radius); padding:32px; box-shadow:var(--shadow)}
h1{font-size: clamp(28px, 4.2vw, 48px); line-height:1.1; margin:0 0 14px}
.lead{color:var(--muted); font-size: clamp(14px, 1.3vw, 18px)}
.badges{display:flex; flex-wrap:wrap; gap:10px; margin:18px 0}
.badge{background:#0e141a; border:1px solid #223040; color:#cfe7dd; padding:8px 12px; border-radius:999px; font-size:12px}
.cta{display:flex; gap:12px; margin-top:18px}
.btn{padding:12px 16px; border-radius:12px; border:1px solid #24303b; background:#10161c; color:var(--text); font-weight:600; display:inline-flex; align-items:center; gap:8px}
.btn.primary{background:linear-gradient(180deg, #2fe7a3, #17b978); color:#082016; border:none}
.btn:hover{transform: translateY(-1px); box-shadow:0 12px 26px rgba(0,0,0,.25)}
.btn:focus{outline:3px solid color-mix(in oklab, var(--brand) 40%, transparent); outline-offset:4px}

/* Cards and grid */
.card{
  background:linear-gradient(180deg, rgba(16,22,28,.9), rgba(16,22,28,.6));
  border:1px solid #1e2630; border-radius:var(--radius-sm); padding:22px; box-shadow:var(--shadow);
}
.grid{display:grid; gap:18px}
.grid.cols-3{grid-template-columns: repeat(3, 1fr)}
.grid.cols-2{grid-template-columns: repeat(2, 1fr)}

/* Sections */
.section{padding: 10px 20px 46px}
.section h2{font-size: clamp(20px, 2.4vw, 30px); margin: 6px 0 14px}
.muted{color:var(--muted)}

/* FAQ */
details{border:1px solid #223040; border-radius:12px; padding:14px 16px; background:#0f141a}
details+details{margin-top:10px}
summary{cursor:pointer; list-style:none}
summary::marker{display:none}
summary b{color:#dfe7ee}

/* Footer */
footer{border-top:1px solid #1e2630; padding:30px 20px; color:var(--muted)}

/* Utility */
h3{margin-top:0}

/* Responsive */
@media (max-width: 900px){
  .hero{grid-template-columns: 1fr}
  .grid.cols-3{grid-template-columns: 1fr}
  .grid.cols-2{grid-template-columns: 1fr}
}

/* Small improvements for print */
@media print{
  body{background: #fff; color:#000; background-image:none}
  header, .cta, footer, nav{display:none}
  .wrap{padding:0}
}