.edu-page-nav{
  position:fixed;
  top:14px;
  left:14px;
  z-index:2147483000;
  display:inline-grid;
  grid-template-columns:54px auto;
  align-items:stretch;
  min-height:42px;
  border:1px solid var(--line-strong);
  border-radius:999px;
  overflow:hidden;
  background:var(--button-bg);
  box-shadow:var(--shadow-soft);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
}

.edu-page-nav a{
  color:var(--text);
  text-decoration:none;
}

.edu-page-nav-back,
.edu-page-nav-home{
  display:flex;
  align-items:center;
  justify-content:center;
  min-height:42px;
  transition:background .18s ease, color .18s ease;
}

.edu-page-nav-back{
  width:54px;
  border-right:1px solid var(--line-strong);
}

.edu-page-nav-home{
  padding:0 18px;
  font-size:14px;
  font-weight:600;
  letter-spacing:.01em;
  white-space:nowrap;
}

.edu-page-nav-arrow{
  font-size:24px;
  line-height:1;
  transform:translateY(-1px);
}

.edu-page-nav-back:hover,
.edu-page-nav-home:hover{
  background:var(--button-hover);
}

.edu-page-nav-back:focus-visible,
.edu-page-nav-home:focus-visible{
  outline:2px solid var(--line-strong);
  outline-offset:-2px;
}

html[data-theme="corporo"] .edu-page-nav{
  backdrop-filter:none;
  -webkit-backdrop-filter:none;
  box-shadow:none;
  border-color:#9683EC;
  background:#9683EC;
}

html[data-theme="corporo"] .edu-page-nav-back{
  border-right-color:rgba(255,255,255,.42);
}

html[data-theme="corporo"] .edu-page-nav a{
  color:#fff;
}

html[data-theme="corporo"] .edu-page-nav-back:hover,
html[data-theme="corporo"] .edu-page-nav-home:hover{
  background:#8c77ee;
}

html[data-theme="liquidglass"] .edu-page-nav{
  background:
    linear-gradient(145deg, rgba(255,255,255,0.04), rgba(120,205,255,0.008));
  border-color:rgba(255,255,255,0.26);
  backdrop-filter:blur(.8px) saturate(112%);
  -webkit-backdrop-filter:blur(.8px) saturate(112%);
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,0.26),
    inset 0 -1px 0 rgba(78,176,224,0.06),
    0 8px 20px rgba(0,14,25,0.08);
}

html[data-theme="vertbritannique"] .edu-page-nav{
  border-color:rgba(212,175,55,0.40);
  background:
    linear-gradient(180deg, rgba(9,92,55,0.88), rgba(0,65,36,0.90));
  box-shadow:
    inset 0 1px 0 rgba(255,236,170,0.08),
    inset 0 -1px 0 rgba(0,0,0,0.18),
    0 12px 28px rgba(0,20,11,0.26);
}

html[data-theme="vertbritannique"] .edu-page-nav-back{
  border-right-color:rgba(212,175,55,0.40);
}

html[data-theme="vertbritannique"] .edu-page-nav-home,
html[data-theme="vertbritannique"] .edu-page-nav-arrow{
  color:#D4AF37;
}

@media (max-width:640px){
  .edu-page-nav{
    top:10px;
    left:10px;
    grid-template-columns:46px auto;
    min-height:38px;
  }

  .edu-page-nav-back{
    width:46px;
  }

  .edu-page-nav-back,
  .edu-page-nav-home{
    min-height:38px;
  }

  .edu-page-nav-home{
    padding:0 14px;
    font-size:12px;
  }

  .edu-page-nav-arrow{
    font-size:21px;
  }
}