:root{--bg: #f3f6f4;--ink: #1a2e28;--muted: #5a7169;--accent: #0d7a5f;--card: #ffffff;--line: #d5e0db;--safe-bottom: env(safe-area-inset-bottom, 0px);--safe-top: env(safe-area-inset-top, 0px)}*{box-sizing:border-box}html,body{margin:0;height:100%}body{font-family:Segoe UI,PingFang SC,Microsoft YaHei,sans-serif;background:radial-gradient(1200px 600px at 10% -10%,#d9efe6,transparent),radial-gradient(900px 500px at 100% 0%,#e8f0ff,transparent),var(--bg);color:var(--ink);-webkit-text-size-adjust:100%}#app{min-height:100%;min-height:100dvh}.page{width:100%;max-width:760px;margin:0 auto;min-height:100%;min-height:100dvh;padding:calc(16px + var(--safe-top)) 16px calc(16px + var(--safe-bottom));display:flex;flex-direction:column;gap:12px}.header h1{margin:0;font-size:clamp(1.25rem,4vw,1.7rem);letter-spacing:.02em;line-height:1.3}.sub{margin:6px 0 0;color:var(--muted);font-size:.875rem;line-height:1.4}.modes{display:grid;grid-template-columns:1fr 1fr;gap:8px}.modes button{border:1px solid var(--line);background:var(--card);padding:12px 10px;border-radius:10px;cursor:pointer;color:var(--ink);font-size:.95rem;min-height:44px;touch-action:manipulation}.modes button.active{background:var(--accent);border-color:var(--accent);color:#fff}.list{flex:1;min-height:240px;overflow:auto;-webkit-overflow-scrolling:touch;background:#ffffffbf;border:1px solid var(--line);border-radius:14px;padding:14px}.empty{text-align:center;padding:28px 8px 12px}.empty-title{margin:0 0 6px;font-weight:600;color:var(--ink)}.empty-hint{margin:0 0 16px;color:var(--muted);font-size:.875rem}.samples{display:flex;flex-wrap:wrap;gap:8px;justify-content:center}.sample{border:1px solid var(--line);background:var(--card);color:var(--ink);border-radius:999px;padding:10px 14px;font-size:.875rem;line-height:1.3;cursor:pointer;max-width:100%;touch-action:manipulation}.sample:disabled{opacity:.5;cursor:not-allowed}.msg{margin-bottom:14px;display:flex;flex-direction:column}.msg.user{align-items:flex-end}.msg.assistant{align-items:flex-start}.bubble{max-width:min(92%,560px);padding:10px 12px;border-radius:14px;white-space:pre-wrap;word-break:break-word;line-height:1.55;background:#e7f3ee;font-size:.95rem}.msg.user .bubble{background:var(--accent);color:#fff;border-bottom-right-radius:4px}.msg.assistant .bubble{border-bottom-left-radius:4px}.warn{margin-top:6px;max-width:min(92%,560px);font-size:.8rem;color:#9a6b00;background:#fff6e0;padding:8px 10px;border-radius:8px;line-height:1.4}.refs{margin-top:8px;max-width:min(92%,560px);width:100%;font-size:.8rem;background:#f7faf8;border:1px dashed var(--line);border-radius:10px;padding:10px}.refs-title{font-weight:600;margin-bottom:6px}.ref{margin-bottom:8px}.ref:last-child{margin-bottom:0}.ref pre{margin:4px 0 0;white-space:pre-wrap;word-break:break-word;font-family:inherit;color:#445e56}.ref-link{display:inline-block;margin-top:4px;color:var(--accent)}.transfer-btn{margin-top:8px;max-width:min(92%,560px);width:auto;align-self:flex-start;border:1px solid #c5ddd3;background:#fff;color:var(--accent);border-radius:999px;padding:8px 14px;font-size:.82rem;line-height:1.3;cursor:pointer;touch-action:manipulation}.transfer-btn:hover:not(:disabled){background:#eef7f3}.transfer-btn.done,.transfer-btn:disabled{color:var(--muted);border-color:var(--line);background:#f4f7f5;cursor:default}.toast{position:fixed;left:50%;bottom:calc(88px + var(--safe-bottom));transform:translate(-50%);z-index:20;max-width:min(90vw,420px);padding:12px 16px;border-radius:12px;background:#1a2e28eb;color:#fff;font-size:.9rem;line-height:1.4;text-align:center;box-shadow:0 8px 24px #0000002e}.error{color:#b42318;margin:0;font-size:.9rem;line-height:1.4}.composer{display:grid;grid-template-columns:1fr auto;gap:8px;align-items:end;position:sticky;bottom:0;padding-top:4px;background:linear-gradient(to top,var(--bg) 70%,transparent)}.composer textarea{width:100%;resize:vertical;min-height:48px;max-height:140px;border-radius:12px;border:1px solid var(--line);padding:12px 14px;font:inherit;font-size:16px;line-height:1.4;background:var(--card)}.composer button{min-height:48px;min-width:72px;padding:0 16px;border:none;border-radius:12px;background:var(--accent);color:#fff;cursor:pointer;font-size:.95rem;touch-action:manipulation}.composer button:disabled{opacity:.5;cursor:not-allowed}@media (min-width: 768px){.page{padding:28px 24px 36px;gap:14px}.modes{display:flex;max-width:420px}.modes button{flex:1;padding:10px 16px}.list{min-height:420px;max-height:calc(100dvh - 280px);padding:18px}.composer{position:static;background:transparent}.composer textarea{font-size:.95rem}}@media (max-width: 380px){.composer{grid-template-columns:1fr}.composer button{width:100%}}