.dv-section { padding: 4rem 0; }
.dv-section--alt { background: var(--color-slate-50); }
.dv-narrow { max-width: 760px; margin: 0 auto; }
.dv-section h2 { font-size: 2rem; font-weight: 800; line-height: 1.2; color: var(--color-slate-900); margin-bottom: 1.25rem; }
.dv-section p { font-size: 1.0625rem; line-height: 1.75; color: var(--color-slate-600); margin-bottom: 1rem; }
.dv-section p:last-child { margin-bottom: 0; }
.dv-section a:not(.btn) { color: var(--color-primary); text-decoration: underline; text-underline-offset: 2px; }
.dv-actions { display: flex; flex-wrap: wrap; gap: 1rem; margin-top: 2rem; }
[id] { scroll-margin-top: 96px; }
.dv-hero { padding: 3rem 0 4rem; background: linear-gradient(135deg, #f8fafc 0%, #fff 60%); }
.dv-hero-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
    column-gap: 4rem;
    align-items: start;
}
.dv-hero h1 { font-size: 2.75rem; font-weight: 800; line-height: 1.15; color: var(--color-slate-900); margin-bottom: 1.25rem; }
.dv-hero p { font-size: 1.1875rem; line-height: 1.75; color: var(--color-slate-700); margin-bottom: 1rem; }
.contact-card { background: white; border-radius: 20px; padding: 2rem; box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1); border: 1px solid var(--color-slate-100); }
.contact-card .form-title { font-size: 1.375rem; font-weight: 800; color: var(--color-slate-900); margin-bottom: 0.25rem; }
.dv-hero .contact-card .subtitle { color: var(--color-slate-500); font-size: 0.9375rem; margin-bottom: 1.5rem; }
.form-group { margin-bottom: 1.125rem; }
.form-group label { display: block; font-size: 0.875rem; font-weight: 600; color: var(--color-slate-700); margin-bottom: 0.4rem; }
.form-group .optionnel { font-weight: 400; color: var(--color-slate-500); }
.form-group input, .form-group select, .form-group textarea {
    width: 100%;
    padding: 0.8rem 1rem;
    font-size: 1rem;
    border: 2px solid var(--color-slate-200);
    border-radius: 10px;
    transition: border-color 0.2s, box-shadow 0.2s;
    font-family: inherit;
    background: white;
    color: var(--color-slate-900);
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { outline: none; border-color: var(--color-primary); box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12); }
.form-group textarea { resize: vertical; min-height: 110px; }
.dv-hero .form-message { padding: 1rem; border-radius: 10px; margin-bottom: 1rem; font-size: 0.9375rem; }
.form-message.success { background: #dcfce7; color: #166534; }
.form-message.error { background: #fef2f2; color: #b91c1c; }
.dv-submit { width: 100%; padding: 1rem 1.5rem; font-size: 1rem; }
.dv-hero .dv-rgpd { font-size: 0.8125rem; line-height: 1.5; color: var(--color-slate-500); margin: 1rem 0 0; }
.dv-rgpd a { color: var(--color-primary); text-decoration: underline; }
.dv-faq details { border-bottom: 1px solid var(--color-slate-200); }
.dv-faq summary { list-style: none; cursor: pointer; padding: 1.25rem 2.5rem 1.25rem 0; position: relative; }
.dv-faq summary::-webkit-details-marker { display: none; }
.dv-faq summary::after { content: '+'; position: absolute; right: 0.25rem; top: 50%; transform: translateY(-50%); font-size: 1.5rem; color: var(--color-primary); }
.dv-faq details[open] summary::after { content: '−'; }
.dv-faq summary h3 { display: inline; margin: 0; font-size: 1.125rem; font-weight: 700; color: var(--color-slate-900); }
.dv-faq .dv-faq-r { padding: 0 0 1.25rem; }
@media (max-width: 1024px) {
    .dv-hero-grid { grid-template-columns: 1fr; row-gap: 2rem; }
    .dv-hero h1 { font-size: 2.25rem; }
}
@media (max-width: 640px) {
    .dv-section { padding: 3rem 0; }
    .dv-hero { padding: 2rem 0 3rem; }
    .dv-hero h1 { font-size: 1.875rem; }
    .dv-hero p { font-size: 1.0625rem; }
    .dv-section h2 { font-size: 1.625rem; }
    .contact-card { padding: 1.5rem; }
    .dv-actions .btn { width: 100%; }
}