:root{--azul:#1f3a5f;--azul-claro:#e8eef6;--texto:#222;--borde:#d5dbe3}
*{box-sizing:border-box}
body{margin:0;font-family:system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;color:var(--texto);line-height:1.6;background:#fff}
a{color:#0b5cad}
hr{border:0;border-top:1px solid var(--borde);margin:1rem 0}
.site-header{padding:.5rem 1rem 0;max-width:1200px;margin:0 auto}
.header-inner{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:.5rem}
.site-logo{max-height:70px;width:auto;display:block}
.brand{display:inline-flex;align-items:center;text-decoration:none}
.site-nav{position:relative}
.site-nav ul{list-style:none;margin:0;padding:0;display:flex;gap:.25rem}
.site-nav a,.subnavbtn{display:block;padding:.6rem .9rem;color:var(--azul);text-decoration:none;font-weight:600;border-radius:4px;cursor:pointer}
.site-nav a:hover,.subnavbtn:hover{background:var(--azul-claro)}
.subnav{position:relative}
.subnav-content{display:none;position:absolute;left:0;top:100%;min-width:200px;background:#fff;border:1px solid var(--borde);box-shadow:0 4px 10px rgba(0,0,0,.1);z-index:10}
.subnav:hover .subnav-content,.subnav:focus-within .subnav-content{display:block}
.site-nav .icon{display:none}
.container{display:flex;gap:2rem;max-width:1200px;margin:0 auto;padding:1rem}
.main-content{flex:1;min-width:0}
.main-content iframe{max-width:100%}
.main-content img{max-width:100%;height:auto}
.sidebar{width:280px;flex-shrink:0;background:var(--azul-claro);padding:1rem;border-radius:6px;align-self:flex-start}
.sidebar h2{font-size:1.05rem;margin:.2rem 0 .4rem;color:var(--azul)}
.sidebar ul{list-style:none;padding:0;margin:0 0 .5rem}
.sidebar li{margin:.35rem 0}
blockquote{margin:1rem 0;padding:.1rem 1rem;border-left:4px solid var(--azul);background:#f6f8fb}
.site-footer{max-width:1200px;margin:0 auto;padding:0 1rem 2rem;text-align:center;font-size:.9rem}
@media (max-width:800px){
  .container{flex-direction:column}
  .sidebar{width:100%}
  .site-nav{width:100%}
  .site-nav ul{display:none;flex-direction:column}
  .site-nav.responsive ul{display:flex}
  .site-nav .icon{display:block;position:absolute;right:0;top:-3.2rem;font-size:1.4rem}
  .subnav-content{position:static;border:0;box-shadow:none;padding-left:1rem;display:block}
}