*{box-sizing:border-box}
body{margin:0;font-family:system-ui,Arial,sans-serif;background:#f1f4f9;color:#1f2933;display:flex;justify-content:center;padding:24px}
.card{background:#fff;width:100%;max-width:560px;padding:28px;border-radius:12px;box-shadow:0 4px 16px rgba(0,0,0,.08)}
h1{margin:0 0 16px;font-size:1.5rem}
h2{font-size:1.2rem;margin:12px 0 16px}
label{display:block;margin-bottom:14px;font-weight:600}
input[type=text],input[type=email],select{display:block;width:100%;margin-top:6px;padding:10px;border:1px solid #cbd2d9;border-radius:8px;font-size:1rem}
.option{display:flex;align-items:center;gap:10px;padding:12px;border:1px solid #cbd2d9;border-radius:8px;cursor:pointer;font-weight:400}
.option:hover,.option.selected{border-color:#3b6ef5;background:#eef3ff}
button{width:100%;padding:12px;margin-top:8px;background:#3b6ef5;color:#fff;border:0;border-radius:8px;font-size:1rem;cursor:pointer}
button:disabled{background:#a9b8e8;cursor:not-allowed}
.error{background:#fdecea;color:#b42318;padding:10px;border-radius:8px;margin-bottom:14px}
.muted{color:#6b7785}
.progress{height:8px;background:#e4e7eb;border-radius:4px;overflow:hidden;margin-bottom:8px}
.progress div{height:100%;background:#3b6ef5}
.score{font-size:3rem;font-weight:700;text-align:center;margin:16px 0 4px}