:root{--bg:#f5f3f0;--ink:#1a1a1a;--muted:#6b6b6b;--line:#e0dad0;--card:#fffdf8;--accent:#0f6b5c;--accent-light:#e8f5f1;--accent-ink:#fff;--danger:#c0392b;--danger-light:#fceae8;--warn:#e67e22;--warn-light:#fef3e8;--chip:#ebe4d8;--mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;--sans:"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;--radius:14px;--radius-sm:10px;--shadow:0 1px 3px rgba(0,0,0,0.06),0 4px 12px rgba(0,0,0,0.04)}*{box-sizing:border-box}body,html{margin:0;padding:0;background:radial-gradient(circle at top left,#efe7d8 0,transparent 40%),linear-gradient(180deg,#f8f5ef 0,var(--bg) 100%);color:var(--ink);font-family:var(--sans);min-height:100%;-webkit-font-smoothing:antialiased}code{font-family:var(--mono);font-size:.92em;background:#efe8dc;padding:.1em .35em;border-radius:4px}.page{max-width:860px;margin:0 auto;padding:40px 20px 80px}.hero{margin-bottom:28px}.eyebrow{margin:0 0 8px;color:var(--accent);font-size:13px;letter-spacing:.04em;text-transform:uppercase;font-weight:600}.hero h1{margin:0 0 12px;font-size:clamp(1.6rem,3vw,2.1rem);line-height:1.25}.lead{margin:0;color:var(--muted);line-height:1.6}.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px 24px;margin-bottom:16px;box-shadow:var(--shadow)}.card.compact{padding:14px 20px}.card h2{margin:0 0 16px;font-size:1.05rem;font-weight:600}.login-card{text-align:center}.login-card .row{justify-content:center;max-width:420px;margin:16px auto 0}.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}.row.space-between{justify-content:space-between}input,select,textarea{width:100%;border:1px solid var(--line);border-radius:var(--radius-sm);padding:10px 12px;font:inherit;background:#fff;color:var(--ink);transition:border-color .15s,box-shadow .15s}input:focus,select:focus,textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-light)}.row input{width:auto;flex:1 1;min-width:180px}.label{display:grid;grid-gap:6px;gap:6px;margin-bottom:12px;font-size:14px;color:var(--muted)}.form-grid{display:grid;grid-template-columns:1fr 1fr 1fr;grid-gap:16px;gap:16px}@media (max-width:600px){.form-grid{grid-template-columns:1fr}}.btn{border:none;background:var(--accent);color:var(--accent-ink);border-radius:999px;padding:10px 20px;font:inherit;cursor:pointer;font-weight:500;transition:opacity .15s,transform .1s}.btn:hover:not(:disabled){opacity:.9}.btn:active:not(:disabled){transform:scale(.97)}.btn:disabled{opacity:.5;cursor:not-allowed}.btn.ghost{background:transparent;color:var(--accent);border:1px solid var(--accent)}.btn.sm{padding:6px 14px;font-size:13px}.btn.primary-btn{width:100%;padding:14px 24px;font-size:1rem;font-weight:600;border-radius:12px}.chip{border:1px solid var(--line);background:var(--chip);border-radius:999px;padding:6px 14px;font:inherit;font-size:14px;cursor:pointer;transition:background .15s}.chip:hover{background:#ddd5c5}.tag{display:inline-block;margin-left:8px;padding:2px 10px;border-radius:999px;background:var(--accent-light);color:var(--accent);font-size:12px;font-weight:500}.hint{margin:10px 0 0;color:var(--muted);font-size:13px;line-height:1.5}.error{color:var(--danger);margin:0 0 10px}.error,.meta{font-size:14px}.meta{color:var(--muted);margin:0}.dropzone{border:2px dashed var(--line);border-radius:var(--radius);padding:32px 20px;text-align:center;cursor:pointer;transition:border-color .15s,background .15s;background:#faf9f5}.dropzone.drag-over,.dropzone:hover{border-color:var(--accent);background:var(--accent-light)}.dropzone-text{margin:0;color:var(--muted);font-size:14px}.quote-preview{margin-top:14px;border:1px solid var(--line);border-radius:var(--radius-sm);overflow:hidden}.quote-preview summary{padding:10px 14px;cursor:pointer;font-size:13px;color:var(--muted);background:#faf9f5}.quote-preview summary:hover{background:#f5f2ec}.quote-pre{margin:0;padding:12px 14px;font-family:var(--mono);font-size:12px;line-height:1.5;overflow-x:auto;background:#1f1f1f;color:#e0e0e0;max-height:300px;overflow-y:auto}.thinking-steps{margin-bottom:20px;padding:16px;background:#faf9f5;border-radius:var(--radius-sm);border:1px solid var(--line)}.thinking-step{display:flex;align-items:center;gap:10px;padding:6px 0}.step-dot{width:8px;height:8px;border-radius:50%;background:var(--accent);flex-shrink:0}.step-dot.pulse{background:var(--accent);animation:pulse 1.2s infinite}@keyframes pulse{0%,to{opacity:1;transform:scale(1)}50%{opacity:.4;transform:scale(.7)}}.step-text{font-size:14px;color:var(--ink)}.step-text.muted{color:var(--muted)}.result-card{border:2px solid var(--accent)}.markdown{border-top:1px solid var(--line);padding-top:16px;line-height:1.7;font-size:15px}.markdown h1{font-size:1.5rem;margin-top:0;margin-bottom:16px;padding-bottom:10px;border-bottom:2px solid var(--accent)}.markdown h2{font-size:1.2rem;margin-top:24px;margin-bottom:12px;color:var(--accent)}.markdown h3{font-size:1.05rem;margin-top:20px;margin-bottom:8px}.markdown p{margin:8px 0}.markdown table{width:100%;border-collapse:collapse;margin:12px 0;font-size:14px}.markdown td,.markdown th{border:1px solid var(--line);padding:8px 10px;text-align:left}.markdown th{background:var(--accent-light);font-weight:600;color:var(--accent)}.markdown tr:nth-child(2n) td{background:#faf9f5}.markdown pre{overflow:auto;background:#1f1f1f;color:#f5f5f5;padding:12px;border-radius:8px;font-size:13px}.markdown blockquote{margin:12px 0;padding:10px 16px;border-left:4px solid var(--accent);background:var(--accent-light);border-radius:0 8px 8px 0;color:var(--muted)}.markdown ol,.markdown ul{padding-left:20px;margin:8px 0}.markdown li{margin:4px 0}.markdown strong{font-weight:600}.markdown code{font-size:.88em}.markdown td:has(span){white-space:nowrap}.footer{margin-top:32px;padding-top:20px;border-top:1px solid var(--line);color:var(--muted);font-size:13px;line-height:1.6;text-align:center}.footer p{margin:4px 0}@media (max-width:600px){.page{padding:24px 16px 60px}.card{padding:18px 16px}.hero h1{font-size:1.5rem}}