:root{--petrole:#1e5f74;--petrole-clair:#7fc3d6;--ardoise:#2d3748;--turquoise:#35c2c2;--fond:#f7f9fa;--gris-bleute:#4a5568;--rouge-doux:#d0626a;--blanc:#fff;--bordure:#e2e8f0;--bg:var(--fond);--surface:var(--blanc);--text:var(--ardoise);--text-muted:var(--gris-bleute);--border:var(--bordure);--primary:var(--petrole);--on-primary:#fff;--accent:var(--turquoise);--chip-bg:var(--blanc)}html[data-theme=dark]{--bg:#121821;--surface:#1e2732;--text:#edf2f7;--text-muted:#a0aec0;--border:#2d3a49;--primary:var(--petrole-clair);--on-primary:#10212b;--accent:var(--turquoise);--chip-bg:#232e3a}*{box-sizing:border-box;margin:0;padding:0}body,html{background:var(--bg);color:var(--text);font-family:Nunito,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;-webkit-font-smoothing:antialiased;transition:background .2s ease,color .2s ease}.app,body{min-height:100vh}.app{max-width:480px;margin:0 auto;padding:20px 16px 48px}.brand{display:flex;align-items:center;gap:10px;font-size:22px;letter-spacing:-.3px}.brand .emo{font-weight:600;color:var(--primary)}.brand .trig{font-weight:800;color:var(--text)}.brand .dot{width:12px;height:12px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 4px rgba(53,194,194,.15)}.topbar{display:flex;align-items:center;justify-content:space-between;flex-wrap:nowrap;gap:8px;margin-bottom:24px}.topbar .brand{flex-shrink:0}.topbar-nav{display:flex;align-items:center;gap:8px}.theme-toggle.lang-btn{width:auto;padding:0 11px;font-size:13px;font-weight:800;color:var(--text);gap:4px;display:inline-flex;align-items:center}.topbar a.link,.topbar button.link{color:var(--text-muted);font-size:14px;font-weight:700;text-decoration:none;background:none;border:none;cursor:pointer}.topbar a{text-decoration:none}.link{color:var(--text-muted);font-weight:700;background:none;border:none;font-size:14px}.link,.nav-pill{cursor:pointer;font-family:inherit}.nav-pill{display:inline-flex;align-items:center;justify-content:center;height:38px;padding:0 14px;border:2px solid var(--border);border-radius:50%;background:var(--surface);color:var(--text);font-size:13px;font-weight:800;text-decoration:none;white-space:nowrap;transition:all .15s ease}.nav-pill:active{transform:scale(.95)}.theme-toggle{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:50%;border:2px solid var(--border);background:var(--surface);cursor:pointer;font-size:17px;line-height:1;transition:all .15s ease}.theme-toggle:active{transform:scale(.92)}.card{background:var(--surface);border:1px solid var(--border);border-radius:18px;padding:22px 18px;margin-bottom:16px;box-shadow:0 1px 2px rgba(0,0,0,.04)}h1{font-size:24px;margin-bottom:6px}h1,h2{font-weight:800;color:var(--text)}h2{font-size:18px;margin-bottom:14px}.subtitle{color:var(--text-muted);font-size:15px;line-height:1.5;margin-bottom:20px}.btn{display:inline-flex;align-items:center;justify-content:center;width:100%;background:var(--primary);color:var(--on-primary);border:none;border-radius:14px;padding:15px;font-size:16px;font-weight:800;cursor:pointer;font-family:inherit;transition:transform .05s ease,opacity .15s ease}.btn:active{transform:scale(.98)}.btn:disabled{opacity:.45;cursor:default}.btn.ghost{background:transparent;color:var(--primary);border:2px solid var(--border)}.btn.turq{background:var(--accent);color:var(--on-primary)}.choices{display:flex;flex-wrap:wrap;gap:10px}.chip{flex-grow:1;flex-shrink:1;flex-basis:calc(50% - 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