:root{--bg:#0f1220;--card:#1a1f35;--text:#e8eaf2;--muted:#9aa0b4;--accent:#6c8cff;--positive:#36c777;--negative:#ff5d6c}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;line-height:1.5}.container{max-width:720px;margin:0 auto;padding:2rem 1.25rem 4rem}a{color:var(--accent);text-decoration:none}h1{font-size:2rem;margin:0 0 .5rem}.muted{color:var(--muted)}.card{background:var(--card);border-radius:14px;padding:1.25rem 1.5rem;margin:1rem 0}.quiz-list{list-style:none;padding:0;display:grid;grid-gap:.75rem;gap:.75rem}.quiz-list a{display:block;background:var(--card);border-radius:12px;padding:1rem 1.25rem;font-weight:600}.question{margin:1.25rem 0}.answers{display:flex;gap:.75rem;margin-top:.5rem}button{font:inherit;cursor:pointer;border:none;border-radius:10px;padding:.6rem 1.1rem;background:#2a3150;color:var(--text);transition:transform .05s ease,background .15s ease}button:hover{transform:translateY(-1px)}button.selected{outline:2px solid var(--accent)}button.primary{background:var(--accent);color:#fff;font-weight:600}button:disabled{opacity:.5;cursor:not-allowed}input[type=email]{font:inherit;width:100%;padding:.7rem .9rem;border-radius:10px;border:1px solid #2a3150;background:#11152a;color:var(--text);margin:.5rem 0 .75rem}.score{font-size:1.4rem;font-weight:700;margin-bottom:1rem}