body {
  background: #ccc;
  font-family: "Times New Roman", serif;
}

.btn-volver-circular {
  position: fixed;
  top: 30px;
  left: 30px;
  width: 55px;
  height: 55px;
  background-color: #F5EFEB;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 8px rgba(0,0,0,0.3);
  transition: transform 0.2s, background-color 0.3s;
  z-index: 1000;
}

.btn-volver-circular img {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  
}

.btn-volver-circular:hover {
  background-color: #D9D1CC;
  transform: scale(1.1);
}

.pagina {
  width: 800px;
  background: white;
  margin: 30px auto;
  padding: 40px;
  box-shadow: 0 0 10px rgba(0,0,0,0.3);
}

.encabezado {
  text-align: left;
  border-bottom: 2px solid black;
  margin-bottom: 20px;
}

.encabezado h1 {
  margin: 0;
  font-size: 36px;
  font-family: "Times New Roman", serif;
}

.encabezado h2 {
  margin: 5px 0;
  font-style: italic;
}

.subtitulo {
  font-size: 14px;
}

/* Sección en dos columnas */
.top {
  display: flex;
  gap: 20px;
  margin-bottom: 30px;
}

.texto {
  flex: 2;
}

.texto ul {
  padding-left: 20px;
}

.imagen {
  flex: 1;
}

.imagen img {
  width: 70%;
  border: 0px solid #000;
}

/* Secciones largas */
.bloque {
  margin-top: 25px;
}

.img-manual{
  width:100%;
  max-width:1000px;
  display:block;
  margin:20px auto;
  border-radius:6px;
}

.bloque h3 {
  border-bottom: 1px solid black;
  padding-bottom: 5px;
  font-size: 18px;
}

.bloque p {
  font-size: 14px;
  line-height: 1.6;
}

.bloque-advertencia {
  background-color: #D9DEDE;
  color: #686969;  
  border-left: 5px solid #A2A5A6;
  padding: 12px 16px;
  margin: 15px 0;
  border-radius: 4px;
  
}

.alerta {
  padding: 15px;
  border-radius: 10px;
  margin: 20px 0;
}

.peligro {
  background: #ffe5e5;
  color: #900;
}