:root{--bg:#f4f5f7;--panel:#ffffff;--ink:#14171f;--muted:#646b7a;--line:#e3e6eb;--brand:#10203f;--accent:#2f6fed;--danger:#c92a2a;--radius:12px;--shadow:0 1px 2px rgba(16,32,63,0.06),0 4px 16px rgba(16,32,63,0.05)}@media (prefers-color-scheme:dark){:root{--bg:#0d1117;--panel:#151b24;--ink:#e8ebf0;--muted:#98a1b2;--line:#262e3b;--brand:#0a1428;--shadow:none}}*{box-sizing:border-box}body,html{margin:0;padding:0}body{background:var(--bg);color:var(--ink);font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,sans-serif;font-size:15px;line-height:1.55}a{color:inherit;text-decoration:none}button{font:inherit;cursor:pointer}input,select,textarea{font:inherit;color:inherit}.topbar{background:var(--brand);color:#fff;gap:16px;padding:0 20px;height:56px;position:-webkit-sticky;position:sticky;top:0;z-index:10}.logo,.topbar{display:flex;align-items:center}.logo{font-weight:700;letter-spacing:.2px;gap:10px}.logo-mark{width:28px;height:28px;border-radius:8px;background:linear-gradient(135deg,#2f6fed,#0f9d76);display:grid;place-items:center;font-size:14px;font-weight:800}.topbar nav{display:flex;gap:4px;margin-left:8px;flex:1 1;overflow-x:auto}.topbar nav a{padding:6px 12px;border-radius:8px;color:rgba(255,255,255,.8);white-space:nowrap}.topbar nav a.active,.topbar nav a:hover{background:rgba(255,255,255,.12);color:#fff}.topbar .who{font-size:13px;color:rgba(255,255,255,.75);display:flex;align-items:center;gap:10px}.topbar .who button{background:transparent;border:1px solid rgba(255,255,255,.3);color:#fff;border-radius:8px;padding:4px 10px}.container{max-width:1100px;margin:0 auto;padding:28px 20px}h1{font-size:24px;margin:0 0 6px}.sub{color:var(--muted);margin:0 0 24px}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));grid-gap:16px;gap:16px}.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:20px}.agent-card{display:flex;flex-direction:column;gap:10px;border-top:4px solid var(--c);transition:transform .12s}.agent-card:hover{transform:translateY(-2px)}.agent-card h2{margin:0;font-size:18px}.agent-card p{margin:0;color:var(--muted)}.badge{display:inline-block;font-size:12px;padding:2px 8px;border-radius:999px;background:color-mix(in srgb,var(--c,var(--accent)) 14%,transparent);color:var(--c,var(--accent));font-weight:600;width:-moz-fit-content;width:fit-content}.muted{color:var(--muted)}.btn{background:var(--accent);color:#fff;border:0;border-radius:10px;padding:10px 16px;font-weight:600}.btn:disabled{opacity:.55;cursor:default}.btn.ghost{color:var(--ink)}.btn.danger,.btn.ghost{background:transparent;border:1px solid var(--line)}.btn.danger{color:var(--danger);padding:6px 10px;font-weight:500}.input{width:100%;padding:10px 12px;border:1px solid var(--line);border-radius:10px;background:var(--panel)}.input:focus{outline:2px solid color-mix(in srgb,var(--accent) 40%,transparent);border-color:var(--accent)}label{font-size:13px;color:var(--muted);display:block;margin-bottom:4px}.login-wrap{min-height:100vh;display:grid;place-items:center;padding:20px;background:var(--brand)}.login-card{width:100%;max-width:400px}.login-card h1{display:flex;align-items:center;gap:10px}.notice{padding:10px 12px;border-radius:10px;font-size:14px;margin-top:12px}.notice.ok{background:color-mix(in srgb,#0f9d76 14%,transparent);color:#0b7a5c}.notice.err{background:color-mix(in srgb,var(--danger) 12%,transparent);color:var(--danger)}.chat-shell{display:grid;grid-template-columns:260px 1fr;height:calc(100vh - 56px)}.sidebar{border-right:1px solid var(--line);background:var(--panel);display:flex;flex-direction:column;min-height:0}.sidebar-head{padding:16px;border-bottom:1px solid var(--line)}.sidebar-head h2{margin:0 0 4px;font-size:16px}.conv-list{overflow-y:auto;padding:8px;flex:1 1}.conv-list a{display:block;padding:8px 10px;border-radius:8px;font-size:14px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.conv-list a:hover{background:var(--bg)}.conv-list a.active{background:color-mix(in srgb,var(--c) 12%,transparent);color:var(--c);font-weight:600}.main{flex-direction:column;min-height:0}.main,.msgs{display:flex}.msgs{flex:1 1;overflow-y:auto;padding:24px;flex-direction:column;gap:14px}.msg{max-width:780px;width:-moz-fit-content;width:fit-content;padding:12px 16px;border-radius:14px}.msg.user{align-self:flex-end;background:var(--c);color:#fff;border-bottom-right-radius:4px;white-space:pre-wrap}.msg.assistant{align-self:flex-start;background:var(--panel);border:1px solid var(--line);border-bottom-left-radius:4px}.msg.assistant p{margin:0 0 8px}.msg.assistant p:last-child{margin-bottom:0}.msg.assistant table{border-collapse:collapse;margin:8px 0;font-size:14px;display:block;overflow-x:auto}.msg.assistant td,.msg.assistant th{border:1px solid var(--line);padding:6px 10px;text-align:left}.msg.assistant pre{background:var(--bg);padding:10px;border-radius:8px;overflow-x:auto}.tools-used{font-size:12px;color:var(--muted);margin-top:8px}.composer{border-top:1px solid var(--line);padding:14px 20px;display:flex;gap:10px;background:var(--panel)}.composer textarea{flex:1 1;resize:none;min-height:46px;max-height:180px}.starters{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin-top:16px}.starters button{background:var(--panel);border:1px solid var(--line);border-radius:999px;padding:8px 14px;font-size:14px}.starters button:hover{border-color:var(--c);color:var(--c)}.empty{margin:auto;text-align:center;max-width:560px}.thinking{color:var(--muted);font-style:italic}table.list{width:100%;border-collapse:collapse;font-size:14px}table.list td,table.list th{padding:10px 8px;border-bottom:1px solid var(--line);text-align:left;vertical-align:middle}table.list th{color:var(--muted);font-weight:600;font-size:12px;text-transform:uppercase;letter-spacing:.4px}.row{display:flex;gap:12px;flex-wrap:wrap;align-items:flex-end}.row>div{flex:1 1;min-width:180px}.checks{display:flex;gap:14px;flex-wrap:wrap;padding:8px 0}.checks label{display:flex;gap:6px;align-items:center;color:var(--ink);font-size:14px;margin:0}.table-scroll{overflow-x:auto}@media (max-width:760px){.chat-shell{grid-template-columns:1fr}.sidebar{display:none}.msgs{padding:16px}.topbar .who span{display:none}}