.header-inner {
    display: grid; grid-template-columns: minmax(0, 1fr) auto;
    grid-template-areas: "brand toggle" "nav nav" "actions actions";
    align-items: center; gap: 1rem;
}
.header-inner > .brand { grid-area: brand; justify-self: start; }
.header-actions { grid-area: actions; display: flex; gap: .75rem; }
.header-actions .btn { width: 100%; }
.site-nav { grid-area: nav; min-width: 0; }
.nav-toggle {
    display: none; grid-area: toggle; align-items: center; justify-content: center;
    min-width: 2.75rem; min-height: 2.75rem; padding: .6rem .9rem;
    border: 1px solid var(--color-line); border-radius: 999px;
    color: var(--color-ink); background: var(--color-surface);
    font-size: .8125rem; font-weight: 600;
    transition: color .2s ease, background .2s ease, border-color .2s ease;
}
.nav-toggle:hover { background: var(--color-primary-light); border-color: var(--color-primary); color: var(--color-primary-dark); }
.nav-toggle-open, .nav-toggle-close { align-items: center; gap: .55rem; }
.nav-toggle-open { display: flex; }
.nav-toggle-close { display: none; }
.nav-toggle-close .icon { width: 1rem; height: 1rem; }
.menu-lines { display: block; width: .9rem; height: .5rem; border-top: 1.5px solid currentColor; border-bottom: 1.5px solid currentColor; }
.site-header.is-menu-open .nav-toggle-open { display: none; }
.site-header.is-menu-open .nav-toggle-close { display: flex; }
.nav-list, .submenu { list-style: none; }
.nav-item { display: flex; flex-wrap: wrap; align-items: center; min-width: 0; gap: .25rem; }
.nav-link {
    display: flex; align-items: center; gap: .75rem; min-width: 0; min-height: 2.75rem;
    padding: .65rem .9rem; border-radius: .65rem; color: var(--color-ink);
    font-size: var(--text-nav); font-weight: 500; line-height: 1.45; text-decoration: none;
    transition: color .2s ease, background .2s ease;
}
.nav-link-label { overflow-wrap: anywhere; }
.nav-link:hover, .nav-item.is-open > .nav-link { background: var(--color-primary-light); color: var(--color-primary-dark); }
.nav-item.is-in-section > .nav-link { color: var(--color-primary-dark); }
.nav-link[aria-current="page"] .nav-link-label {
    text-decoration: underline; text-decoration-color: var(--color-accent);
    text-decoration-thickness: 2px; text-underline-offset: .45rem;
}
.site-nav .nav-link:focus-visible, .site-nav .submenu-toggle:focus-visible { outline-offset: -3px; }
.submenu-toggle {
    display: inline-flex; align-items: center; justify-content: center; flex-shrink: 0;
    width: 2.75rem; height: 2.75rem; padding: 0; border: 1px solid transparent;
    border-radius: .65rem; background: transparent; color: var(--color-primary-dark);
    transition: color .2s ease, background .2s ease, border-color .2s ease;
}
.submenu-toggle:hover, .nav-item.is-open > .submenu-toggle { background: var(--color-primary-light); border-color: var(--color-line); }
.chevron {
    width: .45rem; height: .45rem; border-right: 1.5px solid currentColor; border-bottom: 1.5px solid currentColor;
    transform: translateY(-2px) rotate(45deg); transition: transform .22s var(--ease);
}
.nav-item.is-open > .submenu-toggle .chevron { transform: translateY(2px) rotate(225deg); }
.submenu-surface { background: var(--color-surface); border: 1px solid var(--color-line); border-radius: 1.15rem; padding: .75rem; }
.submenu-intro { padding: .4rem .65rem .85rem; margin-bottom: .35rem; border-bottom: 1px solid var(--color-line); }
.submenu-title { color: var(--color-ink); font-size: var(--text-h4); line-height: 1.3; }
.submenu { display: grid; gap: .3rem; }
.submenu .nav-link { flex: 1; padding: .7rem .65rem; font-size: .875rem; font-weight: 600; }
.nav-link-icon {
    display: grid; place-items: center; flex-shrink: 0; width: 2.25rem; height: 2.25rem;
    border-radius: .7rem; background: var(--color-primary-light); color: var(--color-primary-dark);
    transition: background .2s ease;
}
.nav-link-icon .icon { width: 1.15rem; height: 1.15rem; }
.nav-link-copy { display: grid; gap: .25rem; min-width: 0; }
.nav-link-description { display: block; color: var(--color-muted); font-size: .75rem; line-height: 1.5; font-weight: 400; text-wrap: pretty; }
.nav-link-description-clinic { font-size: var(--text-clinic-name); overflow-wrap: anywhere; }
.submenu .nav-link[aria-current="page"] { background: var(--color-primary-light); }
html:not(.js) .submenu-toggle { display: none; }
html:not(.js) .has-children > .nav-link::after {
    content: ""; flex-shrink: 0; width: .45rem; height: .45rem; margin-left: auto;
    border-right: 1.5px solid currentColor; border-bottom: 1.5px solid currentColor; transform: rotate(45deg);
}
@media (max-width: 61.99rem) {
    html:not(.js) .site-header { position: static; }
    .js .nav-toggle { display: inline-flex; }
    .js .site-nav, .js .header-actions { display: none; }
    .js .site-header:not(.is-menu-open) .header-inner { grid-template-areas: "brand toggle"; }
    .js .site-header.is-menu-open .site-nav, .js .site-header.is-menu-open .header-actions { display: block; }
    .nav-list { display: grid; gap: .5rem; padding-top: .75rem; border-top: 1px solid var(--color-line); }
    .nav-list > .nav-item { padding-bottom: .5rem; border-bottom: 1px solid var(--color-line); }
    .nav-list > .nav-item:last-child { padding-bottom: 0; border-bottom: 0; }
    .nav-list > .nav-item > .nav-link { flex: 1; min-height: 3rem; font-size: 1rem; }
    .submenu-wrap { flex-basis: 100%; min-width: 0; padding-block: .35rem .25rem; }
    .submenu-surface { background: var(--color-bg); padding: .5rem; border-radius: .9rem; }
    .submenu-intro { display: none; }
    .submenu .nav-link { min-height: 3.5rem; }
    .submenu .submenu-wrap { padding: .35rem 0 .35rem .65rem; border-left: 2px solid var(--color-primary); margin-left: .65rem; flex-basis: calc(100% - .65rem); }
    .submenu .submenu-surface { background: var(--color-surface); }
    .js .submenu-wrap { display: none; }
    .js .nav-item.is-open > .submenu-wrap { display: block; }
    .js .site-header.is-menu-open .site-nav,
    .js .nav-item.is-open > .submenu-wrap > .submenu-surface { animation: navigation-reveal .22s var(--ease); }
    .js .site-header.is-menu-open { max-height: 100dvh; overflow: hidden; }
    .js .site-header.is-menu-open .site-nav {
        min-height: 0; max-height: calc(100dvh - 10rem); overflow-y: auto;
        overscroll-behavior: contain; scroll-padding-block: 1rem;
    }
    .header-actions { padding-top: .25rem; }
    .header-actions .btn { min-height: 3rem; }
}
@media (max-width: 61.99rem) and (max-height: 20rem) {
    .js .site-header.is-menu-open .header-inner { padding-block: .5rem; gap: .5rem; }
    .js .site-header.is-menu-open .site-nav { max-height: calc(100dvh - 8rem); }
}
@media (min-width: 62rem) {
    .header-inner {
        grid-template-columns: auto minmax(0, 1fr) auto;
        grid-template-areas: "brand nav actions"; gap: 1.25rem;
    }
    .header-actions .btn { min-height: 3rem; padding-inline: 1.25rem; }
    .site-nav { justify-self: end; }
    .nav-list { display: flex; align-items: center; gap: .5rem; }
    .nav-item { flex-wrap: nowrap; }
    .nav-list > .has-children > .nav-link { padding-right: .5rem; }
    .has-children { position: relative; }
    .submenu-wrap {
        position: absolute; top: calc(100% + var(--submenu-top-shift, 0px)); right: 0;
        width: 21rem; padding-top: .65rem; z-index: 60;
        transform: translateX(var(--submenu-shift, 0px));
    }
    .submenu-surface {
        box-shadow: 0 20px 60px rgb(23 46 62 / .13), 0 4px 14px rgb(23 46 62 / .06);
        transform-origin: top center; transition: opacity .2s ease, transform .22s var(--ease);
    }
    .js .submenu-wrap, html:not(.js) .submenu-wrap { visibility: hidden; pointer-events: none; transition: visibility .2s; }
    .js .submenu-wrap > .submenu-surface, html:not(.js) .submenu-wrap > .submenu-surface { opacity: 0; transform: translateY(6px); }
    .js .nav-item.is-open > .submenu-wrap { visibility: visible; pointer-events: auto; }
    .js .nav-item.is-open > .submenu-wrap > .submenu-surface { opacity: 1; transform: translateY(0); }
    .js .nav-item.is-dismissed > .submenu-wrap { visibility: hidden; pointer-events: none; }
    .js .nav-item.is-dismissed > .submenu-wrap > .submenu-surface { opacity: 0; }
    .submenu .submenu-wrap {
        top: calc(-.75rem + var(--submenu-top-shift, 0px)); left: 100%; right: auto;
        padding-top: 0; padding-left: .65rem; transform: translateX(var(--submenu-shift, 0px));
    }
    .submenu .submenu-wrap[data-side="left"] { left: auto; right: 100%; padding-left: 0; padding-right: .65rem; }
    .submenu .submenu-toggle { background: var(--color-bg); border-color: var(--color-line); }
    .submenu .submenu-toggle:hover, .submenu .nav-item.is-open > .submenu-toggle { background: var(--color-primary-light); }
    .submenu .chevron { transform: rotate(-45deg); }
    .submenu .nav-item.is-open > .submenu-toggle .chevron { transform: rotate(135deg); }
    .submenu .nav-item:has(> .submenu-wrap[data-side="left"]) > .submenu-toggle .chevron { transform: rotate(135deg); }
    .submenu .nav-item.is-open:has(> .submenu-wrap[data-side="left"]) > .submenu-toggle .chevron { transform: rotate(-45deg); }
    .submenu-wrap[data-scrollable="true"] > .submenu-surface { max-height: var(--submenu-max-height); overflow-y: auto; overscroll-behavior: contain; scroll-padding-block: .75rem; }
    .submenu-wrap[data-inline="true"] {
        position: static; flex-basis: calc(100% - .65rem); width: calc(100% - .65rem); padding: .35rem 0 .35rem .65rem;
        transform: none; margin-left: .65rem; border-left: 2px solid var(--color-primary);
    }
    .submenu-wrap[data-inline="true"] > .submenu-surface { box-shadow: none; background: var(--color-bg); border-radius: .75rem; }
    .nav-item:has(> .submenu-wrap[data-inline="true"]) { flex-wrap: wrap; }
    .js .submenu-wrap[data-inline="true"] { display: none; }
    .js .nav-item.is-open > .submenu-wrap[data-inline="true"] { display: block; }
    .submenu .nav-item:has(> .submenu-wrap[data-inline="true"]) > .submenu-toggle .chevron { transform: translateY(-2px) rotate(45deg); }
    .submenu .nav-item.is-open:has(> .submenu-wrap[data-inline="true"]) > .submenu-toggle .chevron { transform: translateY(2px) rotate(225deg); }
    html:not(.js) .nav-item:hover > .submenu-wrap,
    html:not(.js) .nav-item:focus-within > .submenu-wrap { visibility: visible; pointer-events: auto; }
    html:not(.js) .nav-item:hover > .submenu-wrap > .submenu-surface,
    html:not(.js) .nav-item:focus-within > .submenu-wrap > .submenu-surface { opacity: 1; transform: translateY(0); }
    html:not(.js) .submenu-wrap-depth-1 > .submenu-surface {
        max-height: calc(100dvh - var(--header-height) - 1rem); overflow-y: auto; scroll-padding-block: .75rem;
    }
    html:not(.js) .submenu .has-children { flex-wrap: wrap; }
    html:not(.js) .submenu .submenu-wrap {
        display: none; position: static; flex-basis: calc(100% - .65rem); width: calc(100% - .65rem);
        padding: .35rem 0 .35rem .65rem; margin-left: .65rem; border-left: 2px solid var(--color-primary); transform: none;
    }
    html:not(.js) .submenu .submenu-surface { box-shadow: none; background: var(--color-bg); border-radius: .75rem; }
    html:not(.js) .submenu .nav-item:hover > .submenu-wrap,
    html:not(.js) .submenu .nav-item:focus-within > .submenu-wrap { display: block; }
}
@keyframes navigation-reveal { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: translateY(0); } }
@media (min-width: 75rem) { .header-inner { gap: 2rem; } .nav-list { gap: .6rem; } .nav-list > .nav-item > .nav-link { padding-inline: 1rem; } }
@media (prefers-reduced-motion: reduce) { .chevron, .submenu-wrap, .submenu-surface { transition: none; } }