:root{--primary:#51cbce;--info:#51bcda;--success:#6bd098;--warning:#fbc658;--danger:#ef8157;--text:#2c2c2c;--muted:#9a9a9a;--border:#e3e3e3;--bg:#f4f3ef}html,body{height:100%}body{color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;margin:0;font-family:Calibre,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,Noto Sans,Apple Color Emoji,Segoe UI Emoji,Segoe UI Symbol}a{color:var(--primary)}h1{margin:0 0 12px;font-size:16px;font-weight:600}.container{max-width:640px;margin:0 auto;padding:24px}.answer{border:1px solid var(--border);cursor:pointer;background:#fff;border-radius:6px;align-items:center;gap:8px;margin-bottom:8px;padding:8px 10px;display:flex}.answer--selected{border-color:var(--primary);background:#51cbce14}.answer input{margin:0}.answer span{font-size:14px}.btn-primary{border:1px solid var(--primary);background:var(--primary);color:#fff;cursor:pointer;border-radius:6px;margin-top:12px;padding:10px 16px;display:block}.btn-primary:disabled{opacity:.6;cursor:not-allowed}.btn-primary:hover{background:#34b5b8;border-color:#34b5b8}.error{color:#b91c1c;font-size:14px}.btn{border:1px solid var(--border);cursor:pointer;background:#fff;padding:8px 12px}.result{margin-top:16px;font-size:14px}