.site-header {
    background: var(--blanc);
    border-bottom: 1px solid var(--bordure);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-inner {
    height: 78px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 800;
    color: var(--bleu-fonce);
}

.logo-mark {
    width: 42px;
    height: 42px;
    background: var(--bleu);
    color: white;
    border-radius: 10px;
    display: grid;
    place-items: center;
    font-size: 24px;
}

.logo-text {
    font-size: 24px;
    letter-spacing: 1px;
}

.main-nav {
    display: flex;
    align-items: center;
    gap: 26px;
    font-weight: 600;
    color: var(--bleu-fonce);
}

.nav-contact {
    background: var(--or);
    padding: 10px 18px;
    border-radius: 8px;
}

.site-footer {
    background: var(--bleu-fonce);
    color: white;
    padding: 34px 0;
    margin-top: 60px;
}

.footer-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.site-footer p {
    margin: 4px 0 0;
    color: rgba(255,255,255,0.75);
}