.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, .96);
    border-bottom: 1px solid rgba(20, 60, 80, .08);
    backdrop-filter: blur(14px);
}

.header-inner {
    min-height: 78px;
    display: flex;
    align-items: center;
    gap: 24px;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
}

.brand-mark {
    width: 45px;
    height: 45px;
    display: grid;
    place-items: center;
    border-radius: 50%;
    color: #fff;
    font-weight: 800;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
}

.brand-text {
    display: grid;
    line-height: 1.2;
}

.brand-text strong {
    font-family: var(--heading-font);
    color: #12364b;
    font-size: 1.05rem;
}

.brand-text small {
    color: #718493;
    font-size: .68rem;
}

.main-navigation {
    margin-left: auto;
}

.menu-list {
    display: flex;
    align-items: center;
    gap: 4px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.menu-list a {
    display: block;
    padding: 9px 11px;
    color: #334e60;
    font-size: .91rem;
    font-weight: 600;
    border-radius: 10px;
}

.menu-list a:hover,
.menu-list a:focus-visible {
    color: var(--primary-color);
    background: rgba(11, 120, 181, .07);
}

.header-appointment-btn {
    flex-shrink: 0;
    padding: 11px 18px;
    border-radius: var(--button-radius);
    color: #fff;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    font-weight: 700;
}

.mobile-menu-toggle {
    display: none;
}