:root{--navy:#1B3350;--teal:#1A6A7A;--bg:#f5f7fa;--ok:#2e7d32;--warn:#c77700;--bad:#b3261e;--muted:#5b6b7c}
*{box-sizing:border-box}
body{margin:0;font-family:"DejaVu Sans",system-ui,-apple-system,Segoe UI,Roboto,sans-serif;background:var(--bg);color:#1d2733;line-height:1.45}
header{background:var(--navy);color:#fff;padding:.8rem 1rem;display:flex;justify-content:space-between;align-items:center}
header h1{font-size:1.05rem;margin:0;font-weight:600}
header .tag{font-size:.8rem;opacity:.8}
main{max-width:640px;margin:0 auto;padding:1rem}
main.wide{max-width:1200px}
.card{background:#fff;border-radius:10px;padding:1rem;margin:0 0 1rem;box-shadow:0 1px 3px rgba(0,0,0,.08)}
h2{color:var(--navy);font-size:1.15rem;margin:.2rem 0 .6rem}
h3{color:var(--teal);font-size:1rem;margin:.8rem 0 .4rem}
p.muted,.muted{color:var(--muted);font-size:.9rem}
button,.btn{display:block;width:100%;padding:.85rem 1rem;margin:.5rem 0;border:0;border-radius:8px;background:var(--teal);color:#fff;font-size:1rem;font-weight:600;cursor:pointer;text-align:center;text-decoration:none}
button.secondary,.btn.secondary{background:#e3e9ef;color:var(--navy)}
button.danger{background:var(--bad)}
button:disabled{opacity:.5;cursor:default}
button.choice{background:#fff;color:var(--navy);border:2px solid var(--navy);text-align:left}
button.choice.picked{background:var(--navy);color:#fff}
button.choice.good{border-color:var(--ok);background:#e8f5e9;color:var(--ok)}
button.choice.wrong{border-color:var(--bad);background:#fdecea;color:var(--bad)}
input{width:100%;padding:.8rem;font-size:1rem;border:1px solid #c5cfd9;border-radius:8px;margin:.3rem 0}
.row{display:flex;gap:.5rem;flex-wrap:wrap}.row>*{flex:1}
table{width:100%;border-collapse:collapse;font-size:.92rem}
td,th{padding:.4rem .3rem;border-bottom:1px solid #e6ebf0;text-align:left;vertical-align:top}
th{color:var(--muted);font-weight:600;width:42%}
.badge{display:inline-block;padding:.1rem .5rem;border-radius:99px;font-size:.8rem;font-weight:600}
.ok{background:#e8f5e9;color:var(--ok)}.warn{background:#fff4e0;color:var(--warn)}.bad{background:#fdecea;color:var(--bad)}
.lvl{background:#e0eef1;color:var(--teal)}
.big{font-size:2.4rem;font-weight:700;color:var(--navy)}
.score{font-size:3rem;font-weight:800;width:4.5rem;height:4.5rem;border-radius:12px;display:flex;align-items:center;justify-content:center;color:#fff}
.score.A{background:#2e7d32}.score.B{background:#689f38}.score.C{background:#c77700}.score.D{background:#e65100}.score.E{background:#b3261e}
.timer{font-size:1.4rem;font-weight:700;color:var(--teal)}
.hidden{display:none!important}
.bar{background:#e3e9ef;border-radius:4px;height:1.4rem;position:relative;margin:.15rem 0}
.bar span{display:block;height:100%;background:var(--teal);border-radius:4px}
.bar b{position:absolute;left:.4rem;top:.1rem;font-size:.85rem;color:#fff;mix-blend-mode:difference}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:1rem}
.code{font-family:monospace;font-size:1.6rem;letter-spacing:.2rem;color:var(--navy);font-weight:700}
.key{font-size:1.25rem;color:var(--teal);font-weight:700;text-align:center;margin:.8rem 0}
.consent{font-size:.92rem}
.screen h2{font-size:2rem}.screen .big{font-size:4rem}.screen{font-size:1.2rem}
.qr{max-width:280px}.qr svg{width:100%;height:auto}
footer{text-align:center;color:var(--muted);font-size:.75rem;padding:1rem}
.err{color:var(--bad);font-weight:600}
.sep{border:none;border-top:1px solid #e6ebf0;margin:1rem 0}