.mk-page-nav{
  position:fixed;left:18px;bottom:18px;z-index:99998;
  display:flex;gap:8px;align-items:center;
  padding:8px;background:rgba(255,255,255,.94);
  border:1px solid #dbe3ec;border-radius:14px;
  box-shadow:0 10px 30px rgba(15,23,42,.12);
  backdrop-filter:blur(8px)
}
.mk-page-nav a,.mk-page-nav button{
  appearance:none;border:0;text-decoration:none;cursor:pointer;
  min-height:38px;padding:0 14px;border-radius:10px;
  display:inline-flex;align-items:center;justify-content:center;
  font:700 13px/1.1 system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif
}
.mk-page-nav .mk-back{background:#eef3f8;color:#16324f}
.mk-page-nav .mk-home{background:#0e7a62;color:#fff}
@media(max-width:640px){
  .mk-page-nav{left:10px;bottom:10px;padding:6px}
  .mk-page-nav a,.mk-page-nav button{min-height:36px;padding:0 11px}
}