:root{
  --bg:#f6f8fb;
  --card:#ffffff;
  --accent:#2b6cb0;
  --text:#222;
}
*{box-sizing:border-box}
body{
  margin:0;
  font-family: Inter, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial;
  background:var(--bg);
  color:var(--text);
  -webkit-font-smoothing:antialiased;
}
.container{
  max-width:980px;
  margin:0 auto;
  padding:28px;
}
.site-header{
  background:linear-gradient(90deg, rgba(43,108,176,1) 0%, rgba(59,130,246,1) 100%);
  color:white;
  padding:28px 0;
  margin-bottom:18px;
}
.site-header h1{margin:0;font-size:28px}
.site-header .tagline{margin:6px 0 14px; opacity:0.95}
.site-header nav a{
  color:rgba(255,255,255,0.95);
  text-decoration:none;
  margin-right:12px;
  font-weight:600;
}
.card{
  background:var(--card);
  padding:20px;
  border-radius:12px;
  margin-bottom:16px;
  box-shadow:0 6px 18px rgba(15,23,42,0.06);
}
.site-footer{
  padding:18px 0;
  margin-top:18px;
  border-top:1px solid #e6eef9;
  background:transparent;
}
.site-footer .small{font-size:13px; color:#546e7a; margin:6px 0 0}
@media (max-width:640px){
  .container{padding:18px}
  .site-header nav{display:block}
  .site-header nav a{display:inline-block;margin:6px 8px 0 0}
}
.site-header h1 {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-titulo {
  height: 100px;
  width: auto;
}