/* Radar Telco — base (Fase 0). Mobile-first, sem dependências externas. */
:root{
  --c-bg:#0b1020; --c-surface:#121a30; --c-text:#e8ecf6; --c-muted:#9aa7c7;
  --c-primary:#3ea6ff; --c-accent:#22d3a6; --c-border:#22304f;
  --font: system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --maxw:720px;
}
@media (prefers-color-scheme: light){
  :root{ --c-bg:#f6f8fc; --c-surface:#fff; --c-text:#0f172a; --c-muted:#51607d;
    --c-border:#e2e8f5; }
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family:var(--font); background:var(--c-bg); color:var(--c-text);
  line-height:1.6; -webkit-font-smoothing:antialiased;
  display:flex; flex-direction:column; min-height:100vh;
}
a{color:var(--c-primary)}
.site-header,.site-footer{padding:1rem 1.25rem}
.site-header{border-bottom:1px solid var(--c-border)}
.brand{display:inline-flex;align-items:center;gap:.5rem;text-decoration:none;color:var(--c-text);font-weight:700}
.brand-mark{color:var(--c-primary);font-size:1.4rem}
.brand-name{letter-spacing:.3px}
.site-main{flex:1;display:flex;align-items:center;justify-content:center;padding:2rem 1.25rem}
.construction{max-width:var(--maxw);width:100%;text-align:center}
.badge{display:inline-block;font-size:.75rem;text-transform:uppercase;letter-spacing:.12em;
  color:var(--c-accent);border:1px solid var(--c-border);border-radius:999px;padding:.25rem .75rem;margin:0 0 1rem}
.construction h1{font-size:clamp(1.5rem,4vw,2.25rem);line-height:1.2;margin:.25rem 0 1rem}
.lead{color:var(--c-muted);font-size:1.05rem;margin:0 auto 1rem;max-width:56ch}
.reg{font-size:.95rem;color:var(--c-muted)}
.site-footer{border-top:1px solid var(--c-border);color:var(--c-muted);font-size:.85rem;text-align:center}