:root{--cream:#faf6ee;--ink:#17352a;--emerald:#0c5b40;--emerald-dark:#083d2b;--sage:#bcd8c6;--mint:#e6f2e9;--amber:#e9a13b;--peach:#f6d9b8;--danger:#b3352c}*{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;background:var(--cream);color:var(--ink)}a{color:var(--emerald)}button{background:var(--emerald);color:#fff;border:0;border-radius:8px;padding:.55rem 1.1rem;font-size:1rem;cursor:pointer}button.secondary{background:#fff;color:var(--emerald);border:1px solid var(--emerald)}button:disabled{opacity:.55;cursor:default}input,select,textarea{padding:.55rem .7rem;border:1px solid #b9c9bf;border-radius:8px;font-size:1rem;width:100%}.card{background:#fff;border:1px solid #e3ddcd;border-radius:14px;padding:1.25rem}.pilot-banner{background:var(--amber);color:#3d2a05;text-align:center;padding:.45rem 1rem;font-weight:600;font-size:.92rem}.topbar{background:var(--emerald-dark);padding:.8rem 1.2rem;display:flex;justify-content:space-between;align-items:center}.topbar,.topbar a{color:#fff}.wrap{max-width:980px;margin:0 auto;padding:1.2rem}.error{color:var(--danger)}.muted{color:#5c6f66}.grid{display:grid;grid-gap:1rem;gap:1rem;grid-template-columns:repeat(auto-fill,minmax(260px,1fr))}.nav-grid{display:flex;flex-wrap:wrap;gap:.35rem;margin:1rem 0}.nav-grid button{width:2.4rem;height:2.4rem;padding:0;background:#fff;color:var(--ink);border:1px solid #b9c9bf}.nav-grid button.current{outline:3px solid var(--amber)}.nav-grid button.answered{background:var(--sage)}.nav-grid button.flagged{border-color:var(--amber);box-shadow:inset 0 0 0 2px var(--amber)}