@media (max-width: 760px) {
    body {
        font-size: 16px;
        line-height: 1.6;
    }

    .site-header {
        width: calc(100% - 28px);
        margin-top: 12px;
    }

    .site-banner {
        height: 230px;
        object-fit: cover;
        object-position: center center;
    }

    .header-bar {
        display: block;
        margin-top: 16px;
        padding-bottom: 0;
        border-bottom: 0;
    }

    .main-nav {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 16px 22px;
    }

    .main-nav a {
        width: 100%;
        padding-bottom: 8px;
        font-size: 15px;
    }

    .main-nav a::after { height: 6px; }

    .header-socials { display: none; }

    .mobile-social-row {
        display: flex;
        align-items: center;
        margin-top: 20px;
        padding: 15px 0;
        border-top: 1px solid var(--line);
        border-bottom: 1px solid var(--line);
    }

    .mobile-social-label {
        color: var(--grey);
        font-size: 14px;
    }

    .mobile-socials {
        display: flex;
        gap: 18px;
        margin-left: auto;
    }

    .mobile-socials a {
        display: block;
        width: 25px;
        height: 25px;
    }

    .page-content {
        width: calc(100% - 34px);
        margin: 38px auto 64px;
    }

    h1 {
        margin-bottom: 24px;
        font-size: 30px;
        line-height: 1.18;
    }

    h2 { font-size: 24px; }
    h3 { font-size: 18px; }

    .lead {
        font-size: 19px;
        line-height: 1.5;
    }

    .intro-grid {
        display: block;
    }

    .accent-note {
        margin-top: 38px;
    }

    .accent-line {
        width: 82px;
        height: 7px;
        margin-bottom: 18px;
    }

    .seal-section {
        display: block;
        margin-top: 48px;
        padding-top: 34px;
    }

    .seal-image {
        width: min(76vw, 320px);
        margin: 0 auto 28px;
    }

    .seal-caption { text-align: center; }

    .page-title { margin-bottom: 36px; }

    .activity {
        grid-template-columns: 10px 1fr;
        gap: 20px;
        padding: 30px 0;
    }

    .activity-marker {
        width: 9px;
        min-height: 64px;
    }

    .activity-body ul { padding-left: 20px; }

    .manifeste-content {
        width: calc(100% - 24px);
        text-align: left;
    }

    .manifeste-content h1 {
        text-align: center;
    }

    .manifeste-line {
        width: 110px;
        height: 7px;
        margin-left: auto;
        margin-right: auto;
        margin-bottom: 34px;
    }

    .manifeste-text {
        font-size: 16px;
        line-height: 1.65;
        text-align: left;
    }

    .manifeste-text p {
        margin-bottom: 26px;
    }

    .form-row {
        grid-template-columns: 1fr;
        gap: 0;
    }

    .form-field textarea { min-height: 140px; }

    .submit-button {
        width: 100%;
    }

    .footer-inner {
        width: calc(100% - 34px);
        padding: 20px 0 24px;
        font-size: 12px;
    }

    .footer-links { gap: 16px; }

    /* Sous-activités : même principe que sur desktop, plus compact */
    .activity-body h3 {
        margin: 30px 0 18px;
        padding-bottom: 7px;
        border-bottom-width: 5px;
    }

    .activity-body h2 + h3 {
        margin-top: 12px;
    }

}