:root { --fond: #f4f6fa; --carte: #fff; --texte: #12203a; --doux: #5b6472; --accent: #1f5fd6; --bord: #e2e6ee; }
@media (prefers-color-scheme: dark) { :root { --fond: #0e1420; --carte: #161e2e; --texte: #e8edf6; --doux: #a3adbd; --accent: #6ea0ff; --bord: #263247; } }
* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; display: grid; place-items: center; background: var(--fond); color: var(--texte);
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; padding: 16px; }
.carte { width: 100%; max-width: 680px; background: var(--carte); border: 1px solid var(--bord); border-radius: 16px; padding: 32px 24px; text-align: center; }
.logo { display: block; margin: 0 auto 8px; }
h1 { margin: 0; font-size: 1.8rem; letter-spacing: .02em; }
.accroche { margin: 4px 0 28px; color: var(--doux); }
h2 { font-size: 1.4rem; margin: 0 0 20px; }
.aide { color: var(--doux); margin: 20px 0 0; font-size: .9rem; }
.choix { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.choix a { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 16px; padding: 28px 16px; border-radius: 14px;
  border: 2px solid var(--bord); color: var(--texte); text-decoration: none; }
.choix a:hover, .choix a:focus-visible { border-color: var(--accent); outline: none; transform: translateY(-2px); }
.choix img { height: 110px; width: auto; max-width: 100%; border-radius: 6px; box-shadow: 0 0 0 1px rgba(0, 0, 0, .12); }
.choix strong { font-size: 1.5rem; }
@media (max-width: 480px) { .choix { gap: 12px; } .choix a { padding: 20px 8px; } .choix img { height: 76px; } }