:root{--paper:#fbfaf5;--panel:#fff;--ink:#1f2a2a;--muted:#68706e;--line:#dde4dc;--jade:#2f7d68;--jade-deep:#195a4b;--cinnabar:#b84a3a;--gold:#c6923d;--blue:#315f83;--shadow:0 18px 40px #1d2f2b1f}*{box-sizing:border-box}html,body{min-height:100%}body{color:var(--ink);background:linear-gradient(135deg, #2f7d681f, transparent 36%), linear-gradient(225deg, #b84a3a14, transparent 34%), var(--paper);letter-spacing:0;margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif}button,textarea{font:inherit}button{cursor:pointer}button:disabled{cursor:not-allowed}.app-shell{min-height:100vh;padding:24px}.workspace{grid-template-columns:minmax(260px,340px) minmax(0,1fr);gap:18px;width:min(1220px,100%);min-height:calc(100vh - 48px);margin:0 auto;display:grid}.side-panel,.chat-panel{border:1px solid var(--line);box-shadow:var(--shadow);background:#ffffffe0;border-radius:8px}.side-panel{flex-direction:column;gap:22px;padding:22px;display:flex}.brand-row,.panel-title-row,.inline-alert{align-items:center;gap:10px;display:flex}.brand-mark{color:#fff;background:linear-gradient(135deg, var(--jade), var(--blue));border-radius:8px;place-items:center;width:44px;height:44px;display:grid}.eyebrow{color:var(--jade-deep);margin:0 0 4px;font-size:.78rem;font-weight:700}h1,h2{letter-spacing:0;margin:0}h1{font-size:clamp(1.55rem,4vw,2.25rem)}h2{font-size:clamp(1.25rem,3vw,1.8rem)}.notice-block{color:#583227;background:#fff5ec;border:1px solid #f0d5c6;border-radius:8px;gap:10px;padding:14px;display:flex}.notice-block p,.empty-note{color:var(--muted);margin:0;line-height:1.6}.quick-panel,.source-panel{gap:12px;display:grid}.panel-title{color:var(--ink);margin:0;font-weight:800}.prompt-list{gap:9px;display:grid}.prompt-list button{width:100%;min-height:42px;color:var(--ink);text-align:left;border:1px solid var(--line);background:#f7faf8;border-radius:6px;padding:9px 11px}.prompt-list button:hover:not(:disabled){background:#eef7f2;border-color:#2f7d6880}.source-list{gap:10px;margin:0;padding:0;list-style:none;display:grid}.source-list li{border-bottom:1px solid var(--line);gap:4px;padding-bottom:10px;display:grid}.source-list span{font-weight:800}.source-list small{color:var(--muted);line-height:1.45}.chat-panel{grid-template-rows:auto 1fr auto;min-width:0;display:grid;overflow:hidden}.chat-header{border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;gap:14px;padding:20px 22px;display:flex}.icon-button{width:40px;height:40px;color:var(--jade-deep);border:1px solid var(--line);background:#f4f8f5;border-radius:8px;place-items:center;display:grid}.icon-button:hover{background:#e8f3ed}.message-scroll{flex-direction:column;gap:16px;min-height:0;padding:22px;display:flex;overflow:auto}.message-row{display:flex}.message-row.user{justify-content:flex-end}.message-bubble{border:1px solid var(--line);background:#f5f8f6;border-radius:8px;width:min(720px,88%);padding:14px 16px}.message-row.user .message-bubble{color:#fff;background:var(--jade-deep);border-color:var(--jade-deep)}.message-bubble p{white-space:pre-wrap;margin:0;line-height:1.75}.inline-alert{color:var(--cinnabar);margin-bottom:8px;font-weight:800}.source-chips{flex-wrap:wrap;gap:7px;margin-top:12px;display:flex}.source-chips span{color:var(--jade-deep);background:#eaf5ef;border:1px solid #cce3d6;border-radius:999px;padding:5px 8px;font-size:.78rem;font-weight:800}.loading-bubble{gap:7px;width:92px;display:flex}.loading-bubble span{background:var(--gold);border-radius:50%;width:8px;height:8px;animation:.9s ease-in-out infinite pulse;display:block}.loading-bubble span:nth-child(2){animation-delay:.12s}.loading-bubble span:nth-child(3){animation-delay:.24s}.composer{border-top:1px solid var(--line);background:#fbfaf5cc;grid-template-columns:minmax(0,1fr) auto;gap:12px;padding:16px;display:grid}.composer textarea{resize:vertical;width:100%;min-height:72px;max-height:180px;color:var(--ink);border:1px solid var(--line);background:#fff;border-radius:8px;outline:none;padding:12px 14px;line-height:1.55}.composer textarea:focus{border-color:var(--jade);box-shadow:0 0 0 3px #2f7d6829}.send-button{color:#fff;background:var(--jade);border:0;border-radius:8px;justify-content:center;align-self:end;align-items:center;gap:8px;min-width:96px;min-height:46px;padding:0 16px;font-weight:800;display:inline-flex}.send-button:hover:not(:disabled){background:var(--jade-deep)}.send-button:disabled{opacity:.52}@keyframes pulse{0%,to{opacity:.42;transform:translateY(0)}50%{opacity:1;transform:translateY(-3px)}}@media (max-width:860px){.app-shell{padding:12px}.workspace{grid-template-columns:1fr;min-height:calc(100vh - 24px)}.side-panel{gap:16px}.chat-panel{min-height:72vh}}@media (max-width:560px){.side-panel,.chat-header,.message-scroll,.composer{padding:14px}.composer{grid-template-columns:1fr}.send-button{width:100%}.message-bubble{width:94%}}