.site-header {
    background: linear-gradient(135deg, var(--c-primary-dark), var(--c-primary));
    color: #fff;
}
.site-header__inner {
    max-width: 900px;
    margin: 0 auto;
    padding: 1.1rem 1.25rem;
}
.brand { display: flex; align-items: center; gap: .7rem; }
.brand__mark {
    display: inline-grid;
    place-items: center;
    width: 42px; height: 42px;
    border: 2px solid var(--c-accent);
    border-radius: 50%;
    font-weight: 700;
    letter-spacing: .5px;
    color: var(--c-accent);
}
.brand__name { font-size: 1.15rem; font-weight: 700; letter-spacing: .3px; }
.brand__tagline { margin: .35rem 0 0; opacity: .85; font-size: .9rem; }

.page {
    max-width: 900px;
    margin: 0 auto;
    padding: 1.5rem 1.25rem 3rem;
}

.intro-band { margin-bottom: 1.5rem; }
.intro-band__title { font-size: 1.6rem; }
.intro-band__text { color: var(--c-muted); }

.site-footer {
    border-top: 1px solid var(--c-line);
    background: #fff;
}
.site-footer__inner {
    max-width: 900px;
    margin: 0 auto;
    padding: 1.25rem;
    color: var(--c-muted);
    font-size: .88rem;
}
.site-footer__inner p { margin: .2rem 0; }

.inscription-form {
    background: var(--c-surface);
    border: 1px solid var(--c-line);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 1.5rem;
}

.form-nav {
    display: flex;
    gap: .75rem;
    justify-content: space-between;
    margin-top: 1.5rem;
    padding-top: 1.25rem;
    border-top: 1px solid var(--c-line);
}
.form-nav [data-nav-next],
.form-nav [data-nav-submit] { margin-left: auto; }

.form-alert {
    margin-top: 1rem;
    padding: .8rem 1rem;
    border-radius: var(--radius-sm);
    background: var(--c-error-bg);
    color: var(--c-error);
    font-size: .95rem;
}

@media (max-width: 600px) {
    .inscription-form { padding: 1.1rem; }
    .brand__name { font-size: 1rem; }
}