:root{--bg: #0f1020;--panel: #181a30;--panel2: #20223a;--border: #2a2c48;--text: #e8e9f3;--muted: #9a9cb5;--accent: #5b50e8;--accent2: #7d73ff;--ok: #34d399;--warn: #fbbf24}*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text)}a{color:var(--accent2)}button{font:inherit;cursor:pointer;border:none;border-radius:9px;padding:10px 16px;background:var(--accent);color:#fff;transition:filter .12s}button:hover{filter:brightness(1.1)}button.ghost{background:transparent;border:1px solid var(--border);color:var(--text)}button:disabled{opacity:.5;cursor:default}input,select,textarea{font:inherit;width:100%;background:var(--panel2);border:1px solid var(--border);border-radius:9px;color:var(--text);padding:10px 12px}label{display:block;font-size:13px;color:var(--muted);margin:14px 0 6px}.center{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px}.card{background:var(--panel);border:1px solid var(--border);border-radius:16px;padding:28px}.auth{width:380px;max-width:100%}.err{color:#fda4af;font-size:13px;margin-top:10px;min-height:16px}.brand{font-weight:800;font-size:22px;letter-spacing:-.5px}.brand span{color:var(--accent2)}.muted{color:var(--muted)}.row{display:flex;gap:12px;align-items:center}.spread{justify-content:space-between}.shell{display:grid;grid-template-columns:230px 1fr;min-height:100vh}.side{background:var(--panel);border-right:1px solid var(--border);padding:22px 16px}.side nav{display:flex;flex-direction:column;gap:4px;margin-top:22px}.side nav a{color:var(--muted);text-decoration:none;padding:10px 12px;border-radius:9px;font-size:14px}.side nav a.active{background:var(--panel2);color:var(--text)}.main{padding:32px 38px;overflow:auto}h1{font-size:24px;margin:0 0 4px}h2{font-size:17px}.sub{color:var(--muted);margin:0 0 24px}.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:16px}.stat{background:var(--panel);border:1px solid var(--border);border-radius:14px;padding:18px 20px}.stat .n{font-size:30px;font-weight:800}.stat .l{color:var(--muted);font-size:13px;margin-top:4px}.steps{display:flex;gap:8px;margin-bottom:26px}.steps .s{flex:1;height:5px;border-radius:3px;background:var(--border)}.steps .s.done{background:var(--accent)}.snippet{background:#0b0c18;border:1px solid var(--border);border-radius:10px;padding:14px;font-family:ui-monospace,Menlo,monospace;font-size:12.5px;word-break:break-all;color:#c7c9e6}.chips{display:flex;flex-wrap:wrap;gap:8px}.chip{background:var(--panel2);border:1px solid var(--border);border-radius:16px;padding:6px 12px;font-size:13px;cursor:pointer}.chip.on{background:var(--accent);border-color:var(--accent);color:#fff}.list{border:1px solid var(--border);border-radius:12px;overflow:hidden}.list .item{display:flex;justify-content:space-between;padding:13px 16px;border-bottom:1px solid var(--border);cursor:pointer}.list .item:last-child{border-bottom:none}.list .item:hover{background:var(--panel2)}.badge{font-size:11px;padding:2px 8px;border-radius:10px;background:var(--panel2);border:1px solid var(--border);color:var(--muted)}.msg{max-width:78%;padding:10px 13px;border-radius:13px;margin:8px 0;font-size:14px;line-height:1.45}.msg.user{margin-left:auto;background:var(--accent)}.msg.assistant{background:var(--panel2);border:1px solid var(--border)}.cite{font-size:11px;color:var(--muted);margin-top:6px}.tag{display:inline-block;font-size:11px;color:var(--muted)}