:root{--ink:#16163a;--muted:#5b5b7a;--brand:#4b3fd6;--brand2:#6d5cf5;--bg:#f6f5ff;--card:#fff;--ok:#12825a;--bad:#c2372f;--line:#e4e2f5}
*{box-sizing:border-box}body{margin:0;font:17px/1.6 system-ui,-apple-system,Segoe UI,Roboto,sans-serif;color:var(--ink);background:var(--bg)}
.hero{background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;padding:48px 20px 32px;text-align:center}
.hero h1{font-size:clamp(30px,6vw,46px);margin:.2em 0}.kicker{opacity:.85;margin:0;font-size:14px;letter-spacing:.04em;text-transform:uppercase}
.lede{max-width:680px;margin:0 auto 18px;opacity:.95}.toc{display:flex;flex-wrap:wrap;gap:8px;justify-content:center}
.toc a{color:#fff;background:rgba(255,255,255,.16);padding:6px 12px;border-radius:999px;text-decoration:none;font-size:14px}
main{max-width:760px;margin:0 auto;padding:12px 16px 40px}h2{margin:36px 0 12px;font-size:24px}
.q{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:18px;margin:14px 0}
.q h3{font-size:18px;margin:6px 0 12px}.meta{margin:0;color:var(--muted);font-size:13px}
.opts{list-style:none;padding:0;margin:0}.opt{display:flex;gap:10px;align-items:flex-start;width:100%;text-align:left;background:#fafaff;border:1px solid var(--line);border-radius:12px;padding:10px 12px;margin:6px 0;font:inherit;color:inherit;cursor:pointer}
.letter{font-weight:700;color:var(--brand)}.opt.right{border-color:var(--ok);background:#eaf8f1}.opt.wrong{border-color:var(--bad);background:#fdeeed}
.why{display:none;margin:2px 0 8px 34px;font-size:14px;color:var(--muted)}.q.done .why{display:block}
.reveal{margin-top:8px;background:none;border:0;color:var(--brand);font:inherit;font-weight:600;cursor:pointer;padding:0}
.answer{margin-top:10px;border-top:1px dashed var(--line);padding-top:8px}.takeaway{background:#f1efff;border-radius:10px;padding:8px 12px}
.cta{background:var(--card);border:2px solid var(--brand2);border-radius:18px;padding:22px;margin-top:36px;text-align:center}
.stores{display:flex;flex-wrap:wrap;gap:10px;justify-content:center}.store{background:var(--ink);color:#fff;text-decoration:none;padding:12px 18px;border-radius:12px;font-weight:600}
details{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:12px 16px;margin:8px 0}summary{font-weight:600;cursor:pointer}
footer{max-width:760px;margin:0 auto;padding:0 16px 40px;color:var(--muted);font-size:13px}footer a{color:var(--muted)}