:root{--bg:#fff;--bg-sidebar:#f7f7f8;--bg-elev:#fff;--bg-bubble-user:#e9efff;--bg-bubble-assistant:#f4f4f6;--text:#1f2330;--text-muted:#6b6f7a;--border:#e3e4e8;--accent:#10a37f;--accent-h:#0d8a6a;--danger:#d94c4c;--shadow:0 10px 30px #00000014;--sans:system-ui, -apple-system, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;--mono:ui-monospace, "JetBrains Mono", Consolas, monospace;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light dark;font:15px/1.55 var(--sans);color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}@media (prefers-color-scheme:dark){:root{--lightningcss-light: ;--lightningcss-dark:initial;--bg:#1c1d21;--bg-sidebar:#15161a;--bg-elev:#25262b;--bg-bubble-user:#2b3a5a;--bg-bubble-assistant:#2a2b32;--text:#ececf1;--text-muted:#9aa0ab;--border:#34353c;--shadow:0 10px 30px #0006}}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}button{font-family:inherit;font-size:inherit;cursor:pointer}input,textarea{font-family:inherit;font-size:inherit;color:inherit}::-webkit-scrollbar{width:10px;height:10px}::-webkit-scrollbar-thumb{background:var(--border);border-radius:5px}::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}.app{width:100vw;height:100vh;display:flex;overflow:hidden}.sidebar{background:var(--bg-sidebar);border-right:1px solid var(--border);flex-direction:column;flex-shrink:0;width:260px;padding:10px;display:flex}.new-chat{color:var(--text);border:1px solid var(--border);background:0 0;border-radius:8px;align-items:center;gap:8px;margin-bottom:12px;padding:10px 12px;transition:background .15s;display:flex}.new-chat:hover{background:var(--bg-elev)}.new-chat span{font-size:18px;line-height:1}.conv-list{flex-direction:column;flex:1;gap:2px;display:flex;overflow-y:auto}.empty-tip{color:var(--text-muted);padding:8px 12px;font-size:13px}.conv-item{cursor:pointer;color:var(--text);border-radius:6px;justify-content:space-between;align-items:center;gap:6px;padding:8px 10px;font-size:14px;transition:background .15s;display:flex}.conv-item:hover{background:var(--bg-elev)}.conv-item.active{background:var(--bg-elev);font-weight:500}.conv-title{white-space:nowrap;text-overflow:ellipsis;flex:1;overflow:hidden}.conv-del{color:var(--text-muted);opacity:0;background:0 0;border:none;padding:0 4px;font-size:18px;line-height:1;transition:opacity .15s,color .15s}.conv-item:hover .conv-del{opacity:1}.conv-del:hover{color:var(--danger)}.settings-btn{color:var(--text);border:1px solid var(--border);text-align:left;background:0 0;border-radius:8px;margin-top:10px;padding:10px 12px;transition:background .15s}.settings-btn:hover{background:var(--bg-elev)}.chat-view{background:var(--bg);flex-direction:column;flex:1;min-width:0;display:flex}.chat-header{border-bottom:1px solid var(--border);background:var(--bg);flex-shrink:0;align-items:center;gap:12px;padding:8px 16px;display:flex}.model-picker{border:1px solid var(--border);background:var(--bg-elev);cursor:pointer;border-radius:8px;align-items:center;gap:6px;padding:4px 6px 4px 10px;transition:border-color .15s;display:inline-flex}.model-picker:focus-within{border-color:var(--accent)}.model-picker-label{color:var(--text-muted);font-size:12px}.model-picker select{color:var(--text);cursor:pointer;background:0 0;border:none;outline:none;min-width:200px;padding:2px 4px;font-family:inherit;font-size:13px}.model-picker select option,.model-picker select optgroup{background:var(--bg-elev);color:var(--text)}.messages{flex:1;padding:24px 0;overflow-y:auto}.welcome{text-align:center;max-width:720px;color:var(--text-muted);margin:60px auto 0;padding:0 24px}.welcome h1{color:var(--text);margin-bottom:12px;font-size:32px}.msg{gap:14px;max-width:820px;margin:0 auto;padding:12px 24px;display:flex}.msg-avatar{color:#fff;background:var(--accent);border-radius:6px;flex-shrink:0;justify-content:center;align-items:center;width:32px;height:32px;font-size:12px;font-weight:600;display:flex}.msg-user .msg-avatar{background:#5b6fde}.msg-bubble{background:var(--bg-bubble-assistant);white-space:pre-wrap;word-break:break-word;border-radius:10px;flex:1;min-height:22px;padding:10px 14px}.msg-user .msg-bubble{background:var(--bg-bubble-user)}.msg-error{color:var(--danger);white-space:pre-wrap;background:#d94c4c1f;border-radius:6px;margin-top:8px;padding:8px 10px;font-size:13px}.msg-meta{color:var(--text-muted);opacity:.75;font-variant-numeric:tabular-nums;margin-top:6px;font-size:11px}.cursor{color:var(--text-muted);animation:1s steps(2,start) infinite blink;display:inline-block}@keyframes blink{to{visibility:hidden}}.composer{width:100%;max-width:820px;margin:0 auto;padding:12px 24px 20px}.composer-box{border:1px solid var(--border);background:var(--bg-elev);border-radius:14px;transition:border-color .15s,box-shadow .15s}.composer-box:focus-within{border-color:var(--accent);box-shadow:0 0 0 3px #10a37f26}.composer-row{align-items:flex-end;gap:4px;padding:6px;display:flex}.composer-input{resize:none;background:0 0;border:none;outline:none;flex:1;max-height:200px;padding:8px;line-height:1.5}.composer-input:disabled{opacity:.6}.attach-btn{width:36px;height:36px;color:var(--text-muted);background:0 0;border:none;border-radius:8px;font-size:18px;transition:background .15s,color .15s}.attach-btn:hover:not(:disabled){background:var(--bg-sidebar);color:var(--text)}.attach-btn:disabled{opacity:.4;cursor:not-allowed}.attach-row{flex-wrap:wrap;gap:8px;padding:8px 8px 0;display:flex}.attach-chip{border:1px solid var(--border);background:var(--bg);border-radius:8px;width:72px;height:72px;position:relative;overflow:hidden}.attach-chip img{object-fit:cover;width:100%;height:100%;display:block}.attach-del{color:#fff;background:#0009;border:none;border-radius:50%;justify-content:center;align-items:center;width:18px;height:18px;padding:0;font-size:14px;line-height:1;display:flex;position:absolute;top:2px;right:2px}.attach-del:hover{background:var(--danger)}.msg-images{flex-wrap:wrap;gap:6px;margin-bottom:8px;display:flex}.msg-image{border:1px solid var(--border);cursor:zoom-in;background:0 0;border-radius:8px;max-width:240px;max-height:240px;padding:0;transition:transform .15s,box-shadow .15s;display:block;overflow:hidden}.msg-image:hover{transform:translateY(-1px);box-shadow:0 4px 14px #0000002e}.msg-image img{object-fit:contain;max-width:100%;max-height:240px;display:block}.msg-image-missing{background:var(--bg-sidebar);width:200px;height:120px;color:var(--text-muted);cursor:default;justify-content:center;align-items:center;font-size:13px;display:flex}.lightbox-backdrop{z-index:200;cursor:zoom-out;background:#000000e0;justify-content:center;align-items:center;animation:.15s ease-out lightbox-fade;display:flex;position:fixed;inset:0}@keyframes lightbox-fade{0%{opacity:0}to{opacity:1}}.lightbox-img{object-fit:contain;cursor:default;-webkit-user-select:none;user-select:none;border-radius:6px;max-width:92vw;max-height:92vh;box-shadow:0 20px 60px #0009}.lightbox-close,.lightbox-download{color:#fff;cursor:pointer;background:#ffffff1a;border:none;border-radius:50%;justify-content:center;align-items:center;width:40px;height:40px;font-size:22px;text-decoration:none;transition:background .15s;display:flex;position:fixed;top:20px}.lightbox-close{right:20px}.lightbox-download{font-size:18px;right:70px}.lightbox-close:hover,.lightbox-download:hover{background:#ffffff38}.send-btn{background:var(--accent);color:#fff;border:none;border-radius:10px;justify-content:center;align-items:center;width:40px;height:40px;font-size:18px;transition:background .15s;display:flex}.send-btn:hover:not(:disabled){background:var(--accent-h)}.send-btn:disabled{background:var(--border);cursor:not-allowed}.send-btn.stop{background:var(--danger)}.modal-backdrop{z-index:100;background:#00000080;justify-content:center;align-items:center;padding:20px;display:flex;position:fixed;inset:0}.modal{background:var(--bg-elev);width:100%;max-width:520px;max-height:90vh;box-shadow:var(--shadow);border-radius:14px;flex-direction:column;display:flex;overflow:hidden}.modal-header{border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;padding:14px 20px;display:flex}.modal-header h2{margin:0;font-size:18px;font-weight:600}.auto-saved{color:var(--accent);margin-left:4px;font-size:12px;font-weight:400}.storage-bar{background:var(--bg-sidebar);border-radius:4px;width:100%;height:8px;margin-top:4px;overflow:hidden}.storage-bar-fill{background:var(--accent);height:100%;transition:width .3s}.storage-bar.warn .storage-bar-fill{background:#e8a93b}.storage-bar.danger .storage-bar-fill{background:var(--danger)}.storage-stats{color:var(--text-muted);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:8px;margin-top:6px;font-size:12px;display:flex}.storage-stats strong{color:var(--text);font-weight:500}.storage-actions{gap:6px;display:flex}.modal-body{flex-direction:column;gap:16px;padding:18px 20px;display:flex;overflow-y:auto}.modal-footer{border-top:1px solid var(--border);justify-content:flex-end;gap:8px;padding:12px 20px;display:flex}.field{flex-direction:column;gap:6px;display:flex}.field-label{color:var(--text);font-size:13px;font-weight:500}.field input[type=text],.field input[type=password],.field textarea{background:var(--bg);border:1px solid var(--border);border-radius:8px;outline:none;width:100%;padding:8px 10px;transition:border-color .15s}.field input:focus,.field textarea:focus{border-color:var(--accent)}.field textarea{resize:vertical;font-family:inherit}.hint{color:var(--text-muted);font-size:12px;line-height:1.5}.hint code{font-family:var(--mono);background:var(--bg-sidebar);border:1px solid var(--border);color:var(--text);border-radius:4px;padding:1px 5px;font-size:11px}.key-row{align-items:center;gap:6px;display:flex}.key-row input{flex:1}.preset-row{flex-wrap:wrap;gap:6px;margin-top:4px;display:flex}.preset-btn{border:1px solid var(--border);color:var(--text-muted);background:0 0;border-radius:14px;padding:4px 10px;font-size:12px;transition:border-color .15s,color .15s}.preset-btn:hover{border-color:var(--accent);color:var(--accent)}.icon-btn{color:var(--text-muted);background:0 0;border:none;border-radius:6px;padding:4px 8px;font-size:18px;transition:background .15s}.icon-btn:hover{background:var(--bg-sidebar)}.btn-primary{background:var(--accent);color:#fff;border:none;border-radius:8px;padding:8px 16px;font-weight:500;transition:background .15s}.btn-primary:hover{background:var(--accent-h)}.btn-secondary{color:var(--text);border:1px solid var(--border);background:0 0;border-radius:8px;padding:8px 16px;transition:background .15s}.btn-secondary:hover{background:var(--bg-sidebar)}@media (width<=720px){.sidebar{width:220px}.msg,.composer{padding-left:14px;padding-right:14px}}