/* Header navigation: readable labels and the site's historical equipment icons. */
html { scroll-padding-top: 98px; }
.sdi-header__inner {
    width: min(1360px, calc(100% - 48px));
    grid-template-columns: minmax(0, 1.25fr) 164px minmax(0, 1fr);
    gap: 16px;
    min-height: 90px;
}
.sdi-brand img { width: 164px; }
.sdi-nav { min-width: 0; }
.sdi-nav ul { gap: 12px; }
.sdi-nav li { min-width: min-content; }
.sdi-nav a,
.sdi-mobile-nav a {
    display: flex;
    align-items: center;
    gap: 9px;
    min-height: 48px;
    color: var(--sdi-ink);
    font-size: 16px;
    font-weight: 650;
    line-height: 1.35;
    letter-spacing: 0;
    text-decoration: none;
    transition: color .2s, background-color .2s;
}
.sdi-menu-label { min-width: 0; }
.sdi-menu-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex: 0 0 34px;
    width: 34px;
    height: 36px;
    color: var(--sdi-accent);
    transition: transform .2s;
}
.sdi-menu-icon img { display: block; width: 34px; height: 36px; object-fit: contain; }
.sdi-menu-icon svg { display: block; width: 25px; height: 25px; }
.sdi-nav--right .sdi-menu-icon { flex-basis: 25px; width: 25px; }
.sdi-menu-icon--tests-avis { color: #269761; }
.sdi-menu-icon--guides { color: var(--sdi-dark); }
.sdi-menu-choice > a {
    border: 1px solid #efc9b7;
    border-radius: 5px;
    padding: 6px 10px;
    background: #fff8f3;
}
.sdi-nav a:hover,
.sdi-mobile-nav a:hover,
.sdi-nav .current-menu-item > a,
.sdi-mobile-nav .current-menu-item > a { color: var(--sdi-accent); }
.sdi-nav a:hover .sdi-menu-icon { transform: translateY(-2px); }
.sdi-menu-choice > a:hover { background: #ffede2; }
.sdi-menu-toggle { font-family: inherit; font-size: 16px; font-weight: 650; min-height: 44px; }
.sdi-hero { min-height: min(660px, calc(100svh - 90px)); }

/* Keep the type size on smaller laptops: move the logo above the navigation. */
@media (min-width: 1024px) and (max-width: 1199px) {
    html { scroll-padding-top: 140px; }
    .sdi-header__inner {
        grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
        min-height: 132px;
        padding: 4px 0 8px;
        gap: 2px 16px;
    }
    .sdi-brand { grid-column: 1 / -1; grid-row: 1; }
    .sdi-brand img { width: 140px; height: 66px; }
    .sdi-nav { grid-row: 2; }
    .sdi-nav ul { justify-content: space-between; gap: 12px; }
    .sdi-nav a { font-size: 16px; gap: 7px; }
    .sdi-menu-icon { flex-basis: 30px; width: 30px; }
    .sdi-menu-icon img { width: 30px; }
    .sdi-menu-choice > a { padding: 6px 8px; }
    .sdi-hero { min-height: min(620px, calc(100svh - 132px)); }
}

@media (max-width: 1023px) {
    html { scroll-padding-top: 82px; }
    .sdi-header__inner { width: calc(100% - 40px); gap: 16px; min-height: 74px; }
    .sdi-brand img { width: 135px; height: 65px; }
    .sdi-mobile-nav.is-open { padding: 6px 20px 12px; }
    .sdi-mobile-nav a { padding: 6px 8px; min-height: 48px; gap: 12px; font-size: 17px; }
    .sdi-mobile-nav ul + ul { margin-top: 8px; padding-top: 8px; border-top: 1px solid var(--sdi-line); }
    .sdi-mobile-nav .sdi-menu-choice { margin-top: 8px; }
    .sdi-mobile-nav .sdi-menu-choice > a { padding-inline: 8px; }
    .sdi-hero { min-height: 600px; }
    .sdi-header__inner { display: flex; justify-content: space-between; }
    .sdi-nav { display: none; }
    .sdi-menu-toggle { display: flex; align-items: center; gap: 10px; background: transparent; border: 1px solid var(--sdi-line); padding: 10px 14px; color: var(--sdi-ink); border-radius: 3px; }
    .sdi-menu-toggle svg { width: 17px; height: 17px; }
    .sdi-mobile-nav.is-open { display: block; border-top: 1px solid var(--sdi-line); max-height: calc(100svh - 100px); overflow: auto; }
    .sdi-mobile-nav ul { list-style: none; margin: 0; padding: 0; }
}

@media (max-width: 540px) {
    .sdi-hero { min-height: calc(100svh - 74px); }
}

@media (prefers-reduced-motion: reduce) {
    .sdi-menu-icon, .sdi-nav a, .sdi-mobile-nav a { transition: none; }
}

/* Four equipment families, without shrinking navigation labels. */
@media (min-width: 1100px) {
    .sdi-categories { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}
@media (min-width: 541px) {
    .sdi-guide-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (min-width: 541px) and (max-width: 1099px) {
    .sdi-categories { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 30px 0; }
    .sdi-category:nth-child(odd) { border-left: 0; }
}