:root { --bleu: #1f3a5f; --gris: #6b7280; --fond: #f7f8fa; --blanc: #ffffff; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; }
* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; display: flex; align-items: center; justify-content: center; background: var(--fond); color: #1f2937; padding: 16px; }
main { background: var(--blanc); border-radius: 14px; box-shadow: 0 2px 16px rgba(0,0,0,.08); padding: 32px 28px; width: 100%; max-width: 400px; }
h1 { margin: 0; color: var(--bleu); font-size: 24px; }
.sous { margin: 4px 0 24px; color: var(--gris); font-size: 14px; }
form { display: flex; flex-direction: column; gap: 10px; }
input { padding: 11px 12px; border: 1px solid #d1d5db; border-radius: 8px; font-size: 15px; }
button { padding: 11px 12px; border: none; border-radius: 8px; background: var(--bleu); color: #fff; font-size: 15px; font-weight: 600; cursor: pointer; }
button:hover { background: #2f5d9a; }
.msg { color: var(--gris); font-size: 14px; min-height: 1.4em; }
a { color: var(--bleu); }

/* engagement de confidentialité (mode « email ») */
.engagement { display: flex; gap: 8px; align-items: flex-start; font-size: 13px; line-height: 1.4; color: #4a5565; margin: 4px 0 12px; text-align: left; }
.engagement input { margin-top: 3px; flex: none; }