:root {
  color-scheme: dark;
  --bg: #07101d;
  --bg2: #0b1728;
  --panel: rgba(14, 24, 40, 0.82);
  --panel-strong: rgba(18, 31, 51, 0.96);
  --line: rgba(255,255,255,0.08);
  --text: #f5f7fb;
  --muted: #b7c2d5;
  --gold: #d8b15a;
  --gold2: #f3d88e;
  --accent: #7bd7ff;
  --shadow: 0 20px 70px rgba(0,0,0,0.38);
  --radius: 24px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at top left, rgba(216,177,90,0.12), transparent 22%),
    radial-gradient(circle at 80% 0%, rgba(123,215,255,0.08), transparent 25%),
    linear-gradient(180deg, var(--bg), #050912 42%, #04070c);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
}
a { color: inherit; text-decoration: none; }
img { display:block; width:100%; height:auto; border-radius: 20px; }
.topbar {
  position: sticky; top: 0; z-index: 20;
  display:flex; justify-content:space-between; align-items:center; gap: 1rem;
  padding: 1rem clamp(1rem, 3vw, 2rem);
  background: rgba(6, 12, 21, 0.72);
  backdrop-filter: blur(18px) saturate(140%);
  border-bottom: 1px solid var(--line);
}
.brand { font-weight: 800; letter-spacing: 0.03em; color: var(--gold2); }
nav { display:flex; flex-wrap:wrap; gap: .65rem; justify-content:flex-end; }
nav a {
  padding: .55rem .8rem;
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 999px;
  background: rgba(255,255,255,0.03);
  color: var(--muted);
  font-size: .95rem;
}
main { width:min(1200px, calc(100% - 2rem)); margin: 0 auto; padding: 1.25rem 0 3rem; }
.hero {
  display:grid; grid-template-columns: 1.05fr .95fr; gap: 1.5rem;
  align-items:center; padding: 1.2rem 0 1.8rem;
}
.hero-copy, .panel, .faq-block, .image-card, .disclaimer-strip {
  background: linear-gradient(180deg, rgba(20, 32, 53, 0.88), rgba(10, 16, 28, 0.92));
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px) saturate(130%);
}
.hero-copy, .panel, .faq-block { border-radius: var(--radius); padding: clamp(1.1rem, 2vw, 1.6rem); }
.hero-copy { padding-bottom: 1.4rem; }
.eyebrow {
  color: var(--gold2); text-transform: uppercase; letter-spacing: .12em; font-size: .8rem;
  margin: 0 0 .8rem;
}
h1 {
  margin: 0;
  font-size: clamp(2.5rem, 6vw, 4.8rem);
  line-height: .95;
  letter-spacing: -0.03em;
}
.lead, .panel p, .faq-block p, .image-card p, .footer p, .disclaimer-strip { font-size: 1.02rem; }
.lead { color: #e7edf8; max-width: 62ch; margin: 1rem 0 0; }
.cta-row { display:flex; flex-wrap:wrap; gap: .8rem; margin-top: 1.3rem; }
.button, .inline-cta {
  display:inline-flex; align-items:center; justify-content:center;
  min-height: 46px; padding: .8rem 1rem; border-radius: 999px;
  font-weight: 700; transition: transform .18s ease, background .18s ease, border-color .18s ease;
}
.button:hover, .inline-cta:hover { transform: translateY(-1px); }
.primary { background: linear-gradient(135deg, var(--gold), #f4dc93); color: #111; }
.secondary { background: rgba(255,255,255,0.05); border: 1px solid rgba(255,255,255,0.14); }
.microcopy, .note { color: var(--muted); font-size: .95rem; }
.hero-visual { padding: .75rem; border-radius: 28px; }
.hero-visual img { min-height: 100%; object-fit: cover; }
.disclaimer-strip {
  margin: .2rem 0 1.25rem; padding: .85rem 1rem; border-radius: 18px;
  color: #dce4f2;
}
.content-grid { display:grid; gap: 1rem; }
.panel-head { display:flex; justify-content:space-between; align-items:baseline; gap: 1rem; margin-bottom: .75rem; }
h2 { margin: 0; font-size: clamp(1.35rem, 2.9vw, 2rem); line-height: 1.08; letter-spacing: -0.02em; }
.panel p { margin: .78rem 0; color: #e0e7f3; }
.inline-cta { color: var(--gold2); background: rgba(216,177,90,0.07); border: 1px solid rgba(216,177,90,0.18); white-space: nowrap; }
.image-card { border-radius: 22px; padding: .75rem; }
.image-card.compact { margin-bottom: .25rem; }
.image-card p { margin: .75rem .25rem .2rem; color: var(--muted); }
.faq-block { margin-top: .2rem; }
.faq-intro { color: var(--muted); margin-bottom: 1rem; }
details {
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 18px;
  padding: .1rem .9rem;
  margin-top: .7rem;
}
summary {
  cursor: pointer;
  padding: .9rem 0;
  font-weight: 700;
  list-style: none;
}
summary::-webkit-details-marker { display: none; }
details p { margin: 0 0 1rem; color: #d8e1ef; }
.footer {
  width:min(1200px, calc(100% - 2rem)); margin: 0 auto; padding: 0 0 2.5rem;
  color: var(--muted); font-size: .95rem;
}
.footer p { margin: .45rem 0; }
@media (min-width: 960px) {
  .content-grid { grid-template-columns: 1fr 1fr; align-items:start; }
  .panel, .faq-block { grid-column: 1 / -1; }
  #lobby, #cuenta, #errores, #demo, #registro, #catalogo, #licencia { grid-column: 1 / -1; }
  .image-card { align-self: stretch; }
  .hero-visual { display:block; }
  .hero > .hero-visual { grid-row: 1 / span 2; }
}
@media (max-width: 959px) {
  .hero { grid-template-columns: 1fr; }
  .panel-head { flex-direction:column; align-items:flex-start; }
  nav { justify-content:flex-start; }
}
@media (max-width: 640px) {
  main { width: calc(100% - 1rem); }
  .topbar { padding: .9rem .75rem; }
  .hero-copy, .panel, .faq-block, .disclaimer-strip, .image-card { border-radius: 20px; }
  .button, .inline-cta { width: 100%; }
  .cta-row { flex-direction:column; }
  h1 { font-size: clamp(2.2rem, 15vw, 3.1rem); }
}