.atoz-site-header {
    width: 100%;
    background: #fff;
    font-family: Arial, sans-serif;
    position: relative;
    z-index: 20;
}

.atoz-header-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 16px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px 28px;
}

.atoz-logo {
    text-decoration: none;
    font-weight: 700;
    color: #172b36;
    font-size: 20px;
}

.atoz-nav { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 22px; }
.atoz-nav a { display: inline-flex; align-items: center; min-height: 44px; color: #173e46; font-size: 14px; text-decoration: none; }
.atoz-nav a:hover { text-decoration: underline; }
.atoz-site-header a:focus-visible, .atoz-site-header summary:focus-visible { outline: 3px solid #327886; outline-offset: 4px; }
.atoz-menu-toggle, .atoz-routes > summary { cursor: pointer; list-style: none; min-height: 44px; display: flex; align-items: center; gap: 10px; color: #173e46; font-size: 14px; }
.atoz-menu-toggle { padding: 8px 14px; border: 1px solid #dce5e5; border-radius: 8px; font-weight: 700; }
.atoz-menu-toggle::-webkit-details-marker, .atoz-routes > summary::-webkit-details-marker { display: none; }
.atoz-routes { position: relative; }
.atoz-route-links { position: absolute; right: 0; top: 100%; width: 280px; max-width: 85vw; max-height: 60vh; overflow-y: auto; margin: 0; padding: 10px; list-style: none; background: #fff; border: 1px solid #dce5e5; border-radius: 8px; box-shadow: 0 10px 25px rgba(23,43,54,.12); }
.atoz-route-links li { margin: 0; }
.atoz-route-links a { display: flex; padding: 8px 12px; }
@media (min-width: 761px) {
    .atoz-header-ready .atoz-menu > summary { display: none; }
}
@media (max-width: 760px) {
    .atoz-header-inner { padding: 12px 20px; }
    .atoz-logo { max-width: calc(100% - 112px); font-size: 18px; }
    .atoz-nav { position: absolute; left: 0; right: 0; top: 100%; padding: 16px 20px; background: #fff; border-top: 1px solid #dce5e5; box-shadow: 0 10px 25px rgba(23,43,54,.12); max-height: 75vh; overflow-y: auto; flex-direction: column; align-items: stretch; gap: 0; }
    .atoz-route-links { position: static; width: 100%; max-width: none; max-height: none; box-shadow: none; border: 0; padding: 0 0 0 12px; }
}