* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: Poppins, Arial, Helvetica, sans-serif;
  color: #222;
  background: #fff;
  line-height: 1.65;
}

.bg-documentos {
  position: relative;
  min-height: 100vh;
  background-color: #fff;
}

.bg-documentos::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image: url("../img/logo-infotrax.png");
  background-repeat: no-repeat;
  background-position: center center;
  background-size: min(70vw, 620px) auto;
  opacity: 0.1;
  pointer-events: none;
  z-index: 0;
}

.bg-documentos .topbar,
.bg-documentos .wrap,
.bg-documentos footer {
  position: relative;
  z-index: 1;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.7rem 1.25rem;
  background: #fff;
  border-bottom: 1px solid #eee;
}

.topbar img { height: 36px; width: auto; display: block; }

.btn-volver {
  display: inline-block;
  padding: 0.45rem 1rem;
  border-radius: 6px;
  background: #E56900;
  color: #fff;
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
}

.btn-volver:hover { background: #c75c00; color: #fff; }

.wrap {
  max-width: 820px;
  margin: 0 auto;
  padding: 2.25rem 1.25rem 3rem;
}

h1 {
  margin: 0 0 1.25rem;
  text-align: center;
  font-size: 1.55rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

h2 {
  margin: 2rem 0 0.75rem;
  font-size: 1.12rem;
  font-weight: 700;
}

h3 {
  margin: 1.25rem 0 0.5rem;
  font-size: 1rem;
  font-weight: 600;
}

p, li { font-size: 0.95rem; }
a { color: #E56900; }
ul, ol { padding-left: 1.25rem; }
li { margin: 0.35rem 0; }
.note { margin-top: 1rem; }
.meta { color: #555; font-size: 0.9rem; }

footer {
  border-top: 1px solid #eee;
  padding: 1rem 1.25rem;
  text-align: center;
  font-size: 0.8rem;
  color: #666;
  background: #fafafa;
}

footer p { margin: 0.15rem 0; }