:root{--bg: #0a1929;--panel: #111f33;--border: #1e334d;--text: #e8eef5;--muted: #8aa0b8;--brand: #00e5c7;--danger: #f07178}*{box-sizing:border-box}body{margin:0;font-family:Segoe UI,system-ui,sans-serif;background:var(--bg);color:var(--text)}a{color:var(--brand);text-decoration:none}input,textarea,select,button{font:inherit}.panel{background:var(--panel);border:1px solid var(--border);border-radius:8px;padding:1.25rem}.btn{background:var(--brand);color:#0a1929;border:none;border-radius:6px;padding:.6rem 1rem;font-weight:600;cursor:pointer}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-ghost{background:transparent;color:var(--muted);border:1px solid var(--border)}.btn-danger{background:var(--danger);color:#0a1929}.field{width:100%;padding:.75rem;background:#0a1522;border:1px solid var(--border);border-radius:6px;color:var(--text);margin-bottom:.75rem}.muted{color:var(--muted)}.layout{display:flex;min-height:100vh}.sidebar{width:220px;background:#081420;border-right:1px solid var(--border);padding:1.5rem 1rem;display:flex;flex-direction:column;gap:.35rem}.sidebar a{color:var(--text);padding:.55rem .75rem;border-radius:6px}.sidebar a.active,.sidebar a:hover{background:var(--panel);color:var(--brand)}.main{flex:1;padding:2rem;overflow:auto}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:1rem}.stat{background:var(--panel);border:1px solid var(--border);border-radius:8px;padding:1rem}.stat .value{font-size:1.75rem;color:var(--brand);font-weight:700}.chat-log{max-height:420px;overflow-y:auto;display:flex;flex-direction:column;gap:.75rem;margin-bottom:1rem}.chat-compare{display:grid;grid-template-columns:1fr 1fr;gap:1rem;align-items:stretch}@media (max-width: 900px){.chat-compare{grid-template-columns:1fr}}.chat-lane{display:flex;flex-direction:column;min-height:320px}.chat-lane-head{display:flex;justify-content:space-between;gap:8px;align-items:baseline;margin-bottom:8px}.chat-lane-head strong{color:var(--brand)}.bubble.error-bubble{border-color:var(--danger);color:var(--danger)}.bubble{padding:.75rem 1rem;border-radius:8px;max-width:85%;white-space:pre-wrap}.bubble.user{align-self:flex-end;background:#16324d}.bubble.assistant{align-self:flex-start;background:#122636;border:1px solid var(--border)}table{width:100%;border-collapse:collapse}th,td{text-align:left;padding:.6rem;border-bottom:1px solid var(--border)}.error{color:var(--danger);margin-bottom:.75rem}