:root{--bg: #fdf8f3;--card: #ffffff;--ink: #2b2b33;--muted: #6b6b78;--brand: #ff7a59;--brand-ink: #ffffff;--accent: #6c5ce7;--good: #2e9e6b;--warn: #e0902a;--danger: #d1495b;--line: #eee3d8;--shadow: 0 6px 20px rgba(120, 90, 70, .1);--radius: 18px}@media (prefers-color-scheme: dark){:root{--bg: #1c1a20;--card: #26232c;--ink: #f2eee9;--muted: #a79f9a;--line: #38333f;--shadow: 0 6px 20px rgba(0, 0, 0, .35)}}*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background:var(--bg);color:var(--ink);line-height:1.55}.app{max-width:860px;margin:0 auto;padding:24px 20px 80px}.brand{display:flex;align-items:center;gap:10px;margin-bottom:4px}.brand h1{font-size:1.5rem;margin:0;letter-spacing:-.02em}.brand .dot{width:14px;height:14px;border-radius:50%;background:var(--brand)}.tagline{color:var(--muted);margin:0 0 24px}.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:22px;margin-bottom:18px}.card h2{margin:0 0 6px;font-size:1.2rem}.card h3{margin:18px 0 8px;font-size:1rem}.muted{color:var(--muted)}button{font:inherit;border:none;border-radius:999px;padding:11px 20px;cursor:pointer;background:var(--brand);color:var(--brand-ink);font-weight:600;transition:transform .08s ease,filter .15s ease}button:hover{filter:brightness(1.05)}button:active{transform:translateY(1px)}button:disabled{opacity:.5;cursor:default}button.ghost{background:transparent;color:var(--ink);border:1px solid var(--line)}button.accent{background:var(--accent)}button.small{padding:7px 14px;font-size:.9rem}.row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}.spread{display:flex;justify-content:space-between;align-items:center;gap:10px}textarea,input[type=text],input[type=email],input[type=password],select{width:100%;font:inherit;color:var(--ink);background:var(--bg);border:1px solid var(--line);border-radius:12px;padding:12px 14px;resize:vertical}label{font-weight:600;display:block;margin:12px 0 6px}.link-btn{background:none;border:none;padding:0;color:var(--brand);font:inherit;font-weight:600;cursor:pointer;text-decoration:underline}.link-btn:hover{filter:brightness(1.1)}.auth-switch{margin-top:16px;font-size:.92rem}button.danger{background:var(--danger);color:#fff}.icon-btn{background:none;border:none;padding:4px 8px;cursor:pointer;font-size:1rem;color:var(--muted);border-radius:8px;line-height:1}.icon-btn:hover{color:var(--danger);background:var(--line)}.steps{display:flex;gap:8px;margin:4px 0 20px;flex-wrap:wrap}.steps .step{font-size:.8rem;padding:5px 12px;border-radius:999px;background:var(--line);color:var(--muted)}.steps .step.active{background:var(--brand);color:var(--brand-ink)}.steps .step.done{background:var(--good);color:#fff}.pill{display:inline-block;padding:3px 10px;border-radius:999px;font-size:.78rem;background:var(--line);color:var(--muted)}.pill.danger{background:var(--danger);color:#fff}.grade{font-weight:700;border-radius:10px;padding:2px 10px;color:#fff}.grade.A{background:#2e9e6b}.grade.B{background:#58a049}.grade.C{background:#e0902a}.grade.D{background:#e0682a}.grade.F{background:#d1495b}.banner{border-radius:12px;padding:12px 14px;margin:10px 0}.banner.err{background:#fdecea;color:#a3271b}.banner.warn{background:#fff6e6;color:#8a5a12}.banner.ok{background:#e8f7ef;color:#1d6b46}@media (prefers-color-scheme: dark){.banner.err{background:#3a2320;color:#ffb4a8}.banner.warn{background:#35291a;color:#ffcf8f}.banner.ok{background:#1e3328;color:#9fe6bf}}.trial-item{display:flex;justify-content:space-between;align-items:center;padding:14px 0;border-bottom:1px solid var(--line);cursor:pointer}.trial-item:last-child{border-bottom:none}.trial-item:hover h3{color:var(--brand)}.trial-item h3{margin:0}.timeline{list-style:none;padding:0;margin:8px 0 0}.timeline li{padding:8px 0;border-bottom:1px dashed var(--line);font-size:.92rem}.timeline .who{color:var(--muted);font-size:.8rem}.timeline-icon{display:inline-block}.timeline-icon.llm_output,.timeline-icon.llm_summary{color:var(--brand)}.timeline-icon.data_upload,.timeline-icon.user_answer{color:var(--accent)}.timeline-icon.analysis_run,.timeline-icon.snapshot{color:var(--good)}.timeline-icon.revision_request{color:var(--danger)}.spinner{display:inline-block;width:18px;height:18px;border-radius:50%;border:3px solid var(--line);border-top-color:var(--brand);animation:spin .8s linear infinite;vertical-align:middle}@keyframes spin{to{transform:rotate(360deg)}}.celebrate{font-size:2.4rem;text-align:center;margin:6px 0}.option{border:1px solid var(--line);border-radius:14px;padding:14px;margin:10px 0}.option:hover{border-color:var(--brand)}.option.clickable{cursor:pointer}.kpi{display:inline-block;margin:6px 14px 6px 0}.kpi b{font-size:1.3rem}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#140f0a73;display:flex;align-items:center;justify-content:center;padding:20px;z-index:100}.modal{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);padding:22px;width:100%;max-width:560px;max-height:85vh;overflow-y:auto}.copy-box{background:var(--bg);border:1px solid var(--line);border-radius:10px;padding:10px 12px;font-family:Courier New,monospace;font-size:.85rem;white-space:pre-wrap;word-break:break-word;margin:6px 0}