:root{
  --bg:#0b1020; --ink:#e5e7eb; --muted:#9fb2c7;
  --indigo:#6366f1; --sky:#0ea5e9; --violet:#7c3aed;
  --radius:18px; --shadow:0 12px 28px rgba(0,0,0,.35);
}

*{box-sizing:border-box} html,body{height:100%}
body{
  margin:0; color:var(--ink);
  font-family:Inter, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  background: radial-gradient(900px 520px at 85% -10%, rgba(99,102,241,.22), transparent 60%),
              radial-gradient(700px 500px at -10% 90%, rgba(14,165,233,.24), transparent 60%),
              linear-gradient(180deg, var(--bg), #070b18 100%);
  -webkit-font-smoothing:antialiased; text-rendering:optimizeLegibility;
  overflow-x:hidden;
}

/* Fondo tech */
.bg{position:fixed; inset:0; z-index:-2}
.bg .grid{
  position:absolute; inset:0;
  background:
    linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px) 0 0/40px 40px,
    linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px) 0 0/40px 40px;
  mask-image: radial-gradient(closest-side at 80% 20%, rgba(0,0,0,.8), rgba(0,0,0,.0) 70%),
              radial-gradient(closest-side at 10% 90%, rgba(0,0,0,.8), rgba(0,0,0,.0) 70%);
}
.orbs::before,.orbs::after{
  content:""; position:absolute; border-radius:999px; filter:blur(50px); opacity:.25;
  animation: float 12s ease-in-out infinite;
}
.orbs::before{ width:380px; height:380px; left:-60px; top:-60px; background:radial-gradient(circle at 30% 30%, var(--sky), transparent 60%);}
.orbs::after{ width:420px; height:420px; right:-80px; bottom:-120px; background:radial-gradient(circle at 60% 60%, var(--indigo), transparent 60%); animation-delay:-5s}
@keyframes float{ 50%{ transform:translateY(20px)} }

/* Contenedor */
.wrap{width:min(1100px,94vw); margin:32px auto; padding:18px}
.card{background:linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,.03));
  border:1px solid rgba(255,255,255,.08); border-radius:var(--radius); box-shadow:var(--shadow)}

/* Header */
.top{display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;padding:16px 18px;border-bottom:1px solid rgba(255,255,255,.08)}
.brand{display:flex;gap:12px;align-items:center}
.logo{width:40px;height:40px;filter:drop-shadow(0 6px 16px rgba(14,165,233,.35))}
.id .uni{margin:0;font-size:clamp(18px,6vw,24px);font-weight:800;letter-spacing:.3px}
.tag{display:inline-block;margin-top:2px;padding:6px 10px;border-radius:999px;font-size:12px;color:#c7d2fe;background:rgba(99,102,241,.18);border:1px solid rgba(99,102,241,.3)}
.links{display:flex;gap:10px}
.pill{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:10px 12px;border-radius:12px;background:linear-gradient(135deg,var(--indigo),var(--sky));color:#fff;text-decoration:none;font-weight:800;box-shadow:0 10px 24px rgba(99,102,241,.35)}
.pill.ghost{background:transparent;border:1px solid rgba(255,255,255,.14);color:var(--ink);box-shadow:none}

/* Hero */
.hero{padding:20px 18px 8px}
.badge{display:inline-block;padding:6px 10px;border-radius:10px;background:rgba(99,102,241,.15);border:1px solid rgba(99,102,241,.35);color:#c7d2fe;font-weight:700}
.hero h2{margin:.6rem 0 .4rem;font-size:clamp(22px,7vw,32px);line-height:1.15;text-wrap:balance}
.hero p{margin:0 0 14px;color:var(--muted)}
.subscribe{display:flex;gap:10px;flex-wrap:wrap;margin-top:8px}
.field{flex:1 1 240px;min-height:44px;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.14);color:var(--ink);padding:12px 14px;border-radius:12px;outline:none}
.btn{appearance:none;border:none;min-height:44px;padding:12px 16px;border-radius:12px;font-weight:800;cursor:pointer;color:#fff;background:linear-gradient(135deg,var(--sky),var(--indigo));box-shadow:0 10px 24px rgba(99,102,241,.35);transition:.2s transform,.2s box-shadow}
.btn:hover{transform:translateY(-1px);box-shadow:0 16px 28px rgba(99,102,241,.45)}
.hint{color:#9fb2c7;font-size:13px;margin:8px 2px 0}

/* Features */
.features{display:grid;gap:14px;padding:16px 18px}
@media (min-width:760px){ .features{grid-template-columns:repeat(3,1fr)} }
.feature{padding:16px;border-radius:14px;background:linear-gradient(180deg,rgba(255,255,255,.06),rgba(255,255,255,.03));border:1px solid rgba(255,255,255,.1)}
.feature .icon{width:42px;height:42px;border-radius:12px;display:grid;place-items:center;color:#c7d2fe;margin-bottom:8px;background:linear-gradient(135deg,rgba(99,102,241,.25),rgba(14,165,233,.25));box-shadow:0 8px 24px rgba(14,165,233,.25)}
.feature h3{margin:.2rem 0 .2rem;font-size:1rem}
.feature p{margin:0;color:#b7c4d7;font-size:.93rem}

/* Roadmap */
.roadmap{padding:8px 18px 18px}
.roadmap h3{margin:.2rem 0 8px}
.roadmap ul{list-style:none;padding:0;margin:0;display:grid;gap:8px}
.roadmap li{padding:10px 12px;border-radius:12px;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.1);display:flex;gap:10px;align-items:center}
.roadmap li span{display:inline-grid;place-items:center;min-width:34px;height:34px;border-radius:10px;background:linear-gradient(135deg,var(--indigo),var(--sky));font-weight:800}

/* Footer */
.footer{display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;padding:14px 18px;border-top:1px solid rgba(255,255,255,.08);color:#9fb2c7;font-size:13px}
.footer a{color:#c7d2fe;text-decoration:none;border-bottom:1px dashed transparent}
.footer a:hover{border-color:#c7d2fe}

/* Modal */
.modal{position:fixed;inset:0;background:rgba(0,0,0,.55);display:none;place-items:center;z-index:50}
.modal[aria-hidden="false"]{display:grid}
.modal-card{width:min(420px,92vw);background:linear-gradient(180deg,rgba(255,255,255,.08),rgba(255,255,255,.04));
  border:1px solid rgba(255,255,255,.15);border-radius:16px;padding:20px;text-align:center;box-shadow:0 18px 60px rgba(0,0,0,.5)}
.modal-card h3{margin:.2rem 0 .4rem}
.modal-card p{color:#cbd5e1;margin:0 0 12px}

@media (prefers-reduced-motion: reduce){ *{animation:none!important;transition:none!important} }