/* FutBase · Centro de ayuda — estilos autocontenidos */
:root{
  --brand:#145757;        /* brandGreen (teal oscuro) */
  --brand-2:#1c6f6f;
  --accent:#4CAF50;
  --ink:#0f2e2e;
  --text:#33474747;
  --gray-900:#1a2b2b;
  --gray-700:#4a5a5a;
  --gray-500:#7b8a8a;
  --surface:#f4f7f7;
  --card:#ffffff;
  --border:#e3ecec;
  --radius:16px;
  --shadow:0 4px 18px rgba(20,87,87,.08);
  --maxw:1180px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  color:var(--gray-900);
  background:var(--surface);
  line-height:1.55;
}
a{color:var(--brand);text-decoration:none}

/* Cabecera */
.hb{
  position:sticky;top:0;z-index:20;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  color:#fff;
}
.hb__in{max-width:var(--maxw);margin:0 auto;padding:14px 20px;display:flex;align-items:center;gap:14px}
.hb__logo{font-weight:800;font-size:20px;letter-spacing:.5px;display:flex;align-items:center;gap:8px}
.hb__logo span{opacity:.85;font-weight:500;font-size:14px}
.hb__spacer{flex:1}
.hb__link{color:#fff;opacity:.9;font-size:14px;padding:6px 12px;border:1px solid rgba(255,255,255,.35);border-radius:999px}
.hb__link:hover{opacity:1;background:rgba(255,255,255,.12)}

/* Layout */
.wrap{max-width:var(--maxw);margin:0 auto;padding:24px 20px;display:grid;grid-template-columns:260px 1fr;gap:28px}

/* Sidebar */
.side{position:sticky;top:78px;align-self:start;max-height:calc(100vh - 100px);overflow:auto}
.side h4{margin:8px 0;font-size:12px;text-transform:uppercase;letter-spacing:1px;color:var(--gray-500)}
.side nav a{
  display:block;padding:9px 12px;border-radius:10px;color:var(--gray-700);font-size:14.5px;
}
.side nav a:hover{background:#e9f1f1;color:var(--brand)}
.side nav a.active{background:var(--brand);color:#fff}

/* Contenido */
.doc h1{font-size:30px;margin:0 0 4px;color:var(--brand)}
.doc .lead{color:var(--gray-700);margin:0 0 26px;font-size:16px}
.sec{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:22px 24px;margin:0 0 22px;scroll-margin-top:90px;
}
.sec h2{display:flex;align-items:center;gap:10px;font-size:21px;margin:0 0 6px;color:var(--gray-900)}
.sec h2 .num{
  flex:0 0 auto;width:30px;height:30px;border-radius:9px;background:var(--brand);color:#fff;
  display:grid;place-items:center;font-size:15px;font-weight:700;
}
.sec h3{font-size:16px;margin:20px 0 8px;color:var(--brand)}
.sec p{margin:8px 0;color:var(--gray-700)}
.sec ul{margin:8px 0;padding-left:20px;color:var(--gray-700)}
.sec li{margin:4px 0}
.grid{display:grid;grid-template-columns:250px 1fr;gap:22px;align-items:start}
.grid.rev{grid-template-columns:1fr 250px}
.shot{
  border:1px solid var(--border);border-radius:22px;overflow:hidden;background:#0000;
  box-shadow:0 8px 24px rgba(20,87,87,.14);
}
.shot img{display:block;width:100%;height:auto}
.tip{
  margin-top:12px;padding:10px 14px;background:#eef7ee;border-left:4px solid var(--accent);
  border-radius:8px;color:#2c5c2c;font-size:14.5px;
}
.badge{display:inline-block;background:#e9f1f1;color:var(--brand);border-radius:999px;padding:2px 10px;font-size:12.5px;font-weight:600;margin-left:6px}

footer{max-width:var(--maxw);margin:0 auto;padding:26px 20px;color:var(--gray-500);font-size:13px;text-align:center}

@media (max-width:860px){
  .wrap{grid-template-columns:1fr;padding:16px}
  .side{display:none}
  .grid,.grid.rev{grid-template-columns:1fr}
  .shot{max-width:340px;margin:0 auto}
}