:root{--bg:#fdf6ec;--paper:#fff;--ink:#1e2a4a;--ink-soft:#5a6482;--gold:#f5a623;--teal:#2fbf8f;--coral:#f76f4f;--blue:#4f8ef7;--purple:#9b5ef7;--rose:#e85d75;--green-ok:#2fbf8f;--red-bad:#e85d75;--shadow:0 6px 24px #1e2a4a1f;--radius:22px}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}html,body{background:var(--bg);color:var(--ink);min-height:100dvh;margin:0;padding:0;font-family:Rubik,system-ui,sans-serif}#root{flex-direction:column;min-height:100dvh;display:flex}button{cursor:pointer;color:inherit;background:0 0;border:none;font-family:inherit}.app-shell{width:100%;max-width:640px;padding:16px;padding-bottom:calc(24px + env(safe-area-inset-bottom));flex-direction:column;flex:1;margin-inline:auto;display:flex}.card{background:var(--paper);border-radius:var(--radius);box-shadow:var(--shadow);padding:20px}.btn-primary{background:linear-gradient(135deg, var(--gold), #f7c04f);color:#4a3200;border-radius:999px;justify-content:center;align-items:center;gap:8px;padding:14px 28px;font-size:18px;font-weight:800;transition:transform .15s;display:inline-flex;box-shadow:0 4px 14px #f5a62366}.btn-primary:active{transform:scale(.96)}.btn-ghost{color:var(--ink);opacity:.75;background:#1e2a4a0f;border-radius:999px;align-items:center;gap:6px;padding:10px 16px;font-size:15px;font-weight:600;display:inline-flex}.screen-title{margin:8px 0 4px;font-size:26px;font-weight:900}.screen-subtitle{opacity:.7;margin:0 0 16px;font-size:15px}.option-btn{background:var(--paper);width:100%;color:var(--ink);text-align:center;border:3px solid #1e2a4a1a;border-radius:18px;min-height:58px;padding:14px 18px;font-size:20px;font-weight:700;transition:transform .12s,border-color .12s,background .12s}.option-btn:active{transform:scale(.97)}.option-btn.correct{border-color:var(--green-ok);background:#e8faf3}.option-btn.wrong{border-color:var(--red-bad);background:#fdecef;animation:.4s shake}.option-btn.dim{opacity:.45}.option-btn.selected{border-color:var(--blue);background:#edf4ff}@keyframes shake{0%,to{transform:translate(0)}25%{transform:translate(-6px)}50%{transform:translate(6px)}75%{transform:translate(-4px)}}@keyframes pop{0%{opacity:0;transform:scale(.6)}70%{transform:scale(1.08)}to{opacity:1;transform:scale(1)}}.pop{animation:.35s both pop}.round-progress{background:#1e2a4a1a;border-radius:999px;flex:1;height:12px;overflow:hidden}.round-progress>div{background:linear-gradient(90deg, var(--gold), var(--coral));border-radius:999px;height:100%;transition:width .35s}.xp-bar{background:#ffffff40;border-radius:999px;height:10px;overflow:hidden}.xp-bar>div{background:linear-gradient(90deg,#ffd66b,#ffb347);border-radius:999px;height:100%;transition:width .6s}.stamp{border:4px solid var(--teal);color:var(--teal);text-transform:uppercase;border-radius:12px;padding:6px 18px;font-size:22px;font-weight:900;display:inline-block;transform:rotate(-8deg)}