:root{color-scheme:light dark;--bg: #fafafa;--surface: #ffffff;--fg: #18181b;--muted: #71717a;--border: #e4e4e7;--border-strong: #d4d4d8;--accent: #2563eb;--accent-fg: #ffffff;--accent-soft: #eff6ff;--radius-sm: 8px;--radius-md: 12px;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .04), 0 1px 1px rgba(0, 0, 0, .02);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,system-ui,sans-serif;-webkit-font-smoothing:antialiased}@media (prefers-color-scheme: dark){:root{--bg: #0a0a0b;--surface: #18181b;--fg: #f4f4f5;--muted: #a1a1aa;--border: #27272a;--border-strong: #3f3f46;--accent: #3b82f6;--accent-soft: #1e293b;--shadow-sm: 0 1px 3px rgba(0, 0, 0, .4)}}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--fg);line-height:1.5}.page{max-width:640px;margin:0 auto;padding:2.5rem 1.5rem}.page.centered{min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;gap:.5rem}.page.centered h1{font-size:1.5rem;margin:0 0 .25rem;letter-spacing:-.01em}.progress{margin-bottom:1.75rem}.progress-label{display:block;font-size:.8125rem;font-weight:500;color:var(--muted);margin-bottom:.5rem}.progress-track{height:6px;border-radius:999px;background:var(--border);overflow:hidden}.progress-fill{height:100%;border-radius:999px;background:var(--accent);transition:width .3s ease}.question-form{display:flex;flex-direction:column;gap:1.5rem}.question{border:1px solid var(--border);border-radius:var(--radius-md);padding:1.25rem;background:var(--surface);box-shadow:var(--shadow-sm)}.question legend{font-weight:600;font-size:1.0625rem;padding:0 .25rem;margin-bottom:.85rem;letter-spacing:-.01em}.question input[type=text],.question input[type=number]{width:100%;padding:.65rem .85rem;border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--bg);color:var(--fg);font-size:1rem}.question input[type=text]:focus,.question input[type=number]:focus,.option-search:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}.option{display:flex;align-items:center;gap:.75rem;padding:.75rem 1rem;margin-bottom:.5rem;border:1px solid var(--border);border-radius:var(--radius-sm);cursor:pointer;transition:border-color .15s ease,background-color .15s ease}.option:last-child{margin-bottom:0}.option:hover{border-color:var(--border-strong);background:var(--accent-soft)}.option.selected{border-color:var(--accent);background:var(--accent-soft)}.option input[type=radio],.option input[type=checkbox]{accent-color:var(--accent);width:1.1rem;height:1.1rem;flex-shrink:0}.option-list-wrapper{position:relative}.option-list{max-height:320px;overflow-y:auto;padding:.125rem}.scroll-arrow{position:absolute;left:50%;transform:translate(-50%);width:2rem;height:1.5rem;display:flex;align-items:center;justify-content:center;padding:0;border:1px solid var(--border);border-radius:999px;background:var(--surface);color:var(--muted);font-size:.7rem;line-height:1;cursor:pointer;box-shadow:var(--shadow-sm);z-index:1}.scroll-arrow-up{top:-.75rem}.scroll-arrow-down{bottom:-.75rem}.option-search{width:100%;padding:.5rem .75rem;margin-bottom:.5rem;border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--bg);color:var(--fg);font-size:1rem}.option-empty{color:var(--muted);padding:.4rem 0}button{padding:.75rem 1.5rem;font-size:.9375rem;font-weight:600;border:none;border-radius:var(--radius-sm);background:var(--accent);color:var(--accent-fg);cursor:pointer;transition:opacity .15s ease,transform .05s ease}button:hover:not(:disabled){opacity:.92}button:active:not(:disabled){transform:translateY(1px)}button:disabled{opacity:.45;cursor:not-allowed}button:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.outcome-message{color:var(--muted);max-width:32ch}.spinner{width:36px;height:36px;border-radius:50%;border:3px solid var(--border);border-top-color:var(--accent);animation:spin .8s linear infinite;margin-top:.5rem}@keyframes spin{to{transform:rotate(360deg)}}