/* V20: two-row public header and refined dropdown navigation */
.learn-header{
  --header-shell:min(1440px,calc(100% - 56px));
  background:#fff;
  border-bottom:0;
  box-shadow:0 8px 30px rgba(15,54,42,.06);
}
.learn-header-inner{
  display:block;
  width:100%;
  min-height:0;
  margin:0;
}
.learn-brand-row{
  display:flex;
  align-items:center;
  justify-content:space-between;
  width:var(--header-shell);
  min-height:112px;
  margin:0 auto;
  gap:24px;
}
.learn-brand{
  min-width:0;
  max-width:100%;
}
.learn-brand img,.learn-brand>b{
  width:70px;
  height:70px;
  border-radius:18px;
}
.learn-brand strong{
  font-size:clamp(20px,1.6vw,27px);
  letter-spacing:-.02em;
}
.learn-brand small{
  max-width:900px;
  margin-top:5px;
  font-size:13px;
  line-height:1.55;
  white-space:normal;
}
.learn-nav-row{
  position:relative;
  min-height:70px;
  border-top:1px solid #e5ece8;
  background:linear-gradient(180deg,#fbfdfc 0%,#f5f8f6 100%);
}
.learn-nav{
  width:var(--header-shell);
  min-height:70px;
  margin:0 auto;
  justify-content:center;
  gap:8px;
}
.learn-nav-link,.learn-menu-trigger{
  min-height:48px;
  padding:0 20px;
  border:1px solid transparent;
  border-radius:14px;
  color:#25483c;
  font-size:15px;
  transition:background-color .18s ease,border-color .18s ease,color .18s ease,box-shadow .18s ease,transform .18s ease;
}
.learn-nav-link:hover,.learn-menu-trigger:hover,.learn-menu.open>.learn-menu-trigger{
  border-color:#d5e3dd;
  background:#fff;
  color:var(--primary);
  box-shadow:0 9px 24px rgba(18,63,49,.09);
  transform:translateY(-1px);
}
.learn-menu-trigger svg{
  margin-left:8px;
}
.learn-admin{
  width:48px;
  height:48px;
  margin-left:10px;
  border-radius:14px;
  box-shadow:0 6px 16px rgba(18,63,49,.06);
  transition:background-color .18s ease,color .18s ease,transform .18s ease,box-shadow .18s ease;
}
.learn-admin:hover{
  transform:translateY(-1px);
  box-shadow:0 10px 24px rgba(18,63,49,.16);
}
.learn-mega{
  top:calc(100% + 13px);
  left:50%;
  right:auto;
  grid-template-columns:220px minmax(350px,1fr);
  width:640px;
  padding:10px;
  border:1px solid rgba(36,95,73,.16);
  border-radius:24px;
  background:rgba(255,255,255,.985);
  box-shadow:0 28px 75px rgba(12,46,36,.2),0 4px 12px rgba(12,46,36,.06);
  transform:translate(-50%,-8px);
  overflow:hidden;
}
.learn-menu.open>.learn-mega,
.learn-menu:hover>.learn-mega,
.learn-menu:focus-within>.learn-mega{
  transform:translate(-50%,0);
}
.learn-menu:last-of-type>.learn-mega{
  right:0;
  left:auto;
  transform:translateY(-8px);
}
.learn-menu:last-of-type.open>.learn-mega,
.learn-menu:last-of-type:hover>.learn-mega,
.learn-menu:last-of-type:focus-within>.learn-mega{
  transform:translateY(0);
}
.learn-mega:before{
  top:-14px;
  height:15px;
}
.learn-mega-intro{
  min-height:270px;
  padding:26px;
  border-radius:17px;
  background:
    radial-gradient(circle at 100% 0,rgba(226,196,116,.28),transparent 38%),
    linear-gradient(145deg,#123e31,#2d7055);
}
.learn-mega-intro span{
  font-size:10px;
  letter-spacing:.16em;
}
.learn-mega-intro h2{
  margin:9px 0 20px;
  font-size:28px;
}
.learn-mega-intro a{
  display:inline-flex;
  align-items:center;
  align-self:flex-start;
  padding:9px 13px;
  border:1px solid rgba(255,255,255,.28);
  border-radius:999px;
  transition:background-color .18s ease;
}
.learn-mega-intro a:hover{
  background:rgba(255,255,255,.13);
}
.learn-mega-items{
  gap:3px;
  padding:5px 4px 5px 8px;
}
.learn-mega-items>a{
  min-height:63px;
  padding:11px 46px 11px 17px;
  border:1px solid transparent;
  border-radius:14px;
  transition:background-color .18s ease,border-color .18s ease,transform .18s ease;
}
.learn-mega-items>a:hover,.learn-mega-items>a:focus-visible{
  border-color:#dbe8e2;
  background:linear-gradient(90deg,#eef6f2,#f8faf9);
  transform:translateX(2px);
  outline:none;
}
.learn-mega-items strong{
  font-size:15px;
}
.learn-mega-items small{
  margin-top:3px;
  font-size:11px;
  line-height:1.45;
}
.learn-mega-items i{
  display:grid;
  place-items:center;
  width:27px;
  height:27px;
  right:13px;
  border-radius:50%;
  background:#f3ead4;
}

@media (max-width:1050px){
  .learn-header{
    --header-shell:calc(100% - 28px);
  }
  .learn-header-inner{
    width:100%;
  }
  .learn-brand-row{
    min-height:84px;
  }
  .learn-brand{
    max-width:calc(100% - 64px);
  }
  .learn-brand img,.learn-brand>b{
    width:54px;
    height:54px;
    border-radius:14px;
  }
  .learn-brand strong{
    font-size:18px;
  }
  .learn-brand small{
    display:none;
  }
  .learn-nav-row{
    min-height:0;
    border-top:0;
    background:transparent;
  }
  .learn-nav{
    top:0;
    width:auto;
    min-height:0;
    margin:0;
    padding:12px;
    border-radius:0 0 20px 20px;
  }
  .learn-nav-link,.learn-menu-trigger{
    min-height:52px;
    padding:0 16px;
    border-radius:13px;
  }
  .learn-nav-link:hover,.learn-menu-trigger:hover,.learn-menu.open>.learn-menu-trigger{
    transform:none;
    box-shadow:none;
  }
  .learn-mega,
  .learn-menu:last-of-type>.learn-mega{
    position:static;
    width:100%;
    margin:5px 0 10px;
    padding:6px;
    border-radius:16px;
    transform:none;
    overflow:visible;
  }
  .learn-menu.open>.learn-mega,
  .learn-menu:hover>.learn-mega,
  .learn-menu:focus-within>.learn-mega,
  .learn-menu:last-of-type.open>.learn-mega,
  .learn-menu:last-of-type:hover>.learn-mega,
  .learn-menu:last-of-type:focus-within>.learn-mega{
    transform:none;
  }
  .learn-mega-items{
    padding:0;
  }
  .learn-mega-items>a{
    min-height:60px;
  }
  .learn-admin{
    min-height:50px;
    margin:6px 0 0;
  }
}

@media (max-width:560px){
  .learn-header{
    --header-shell:calc(100% - 22px);
  }
  .learn-brand-row{
    min-height:78px;
  }
  .learn-brand{
    gap:10px;
  }
  .learn-brand img,.learn-brand>b{
    width:48px;
    height:48px;
  }
  .learn-brand strong{
    font-size:16px;
  }
}

@media (prefers-reduced-motion:reduce){
  .learn-nav-link,.learn-menu-trigger,.learn-admin,.learn-mega,.learn-mega-items>a{
    transition:none;
  }
}