:root{--bg: #ffffff;--card: #ffffff;--ink: #1a1d21;--sub: #6b7280;--accent: #2563eb;--user: #e4f0f8;--user-ink: #2f6398;--err: #dc2626;--ok: #16a34a;--tool: #f6f6f7;--tool-border: #e5e5ea;--radius: 14px}*{box-sizing:border-box;margin:0;padding:0;-webkit-tap-highlight-color:transparent}html,body{height:100%}body{font:15px/1.55 -apple-system,PingFang SC,HarmonyOS Sans SC,sans-serif;background:var(--bg);color:var(--ink);overflow:hidden}#app{height:100%}.layout{height:100%;display:flex}.sidebar{width:300px;flex-shrink:0;background:var(--card);border-right:1px solid #e5e7eb;display:flex;flex-direction:column;z-index:40}.sb-head{display:flex;align-items:center;gap:8px;padding:10px 12px;border-bottom:1px solid #e5e7eb;padding-top:calc(10px + env(safe-area-inset-top));min-height:47px}.sb-head 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calc(env(safe-area-inset-bottom) + 20px)}.lightbox img{max-width:100%;max-height:100%;object-fit:contain;border-radius:4px;touch-action:none;user-select:none;-webkit-user-select:none;-webkit-user-drag:none}.lightbox .lb-x{position:absolute;top:calc(env(safe-area-inset-top) + 10px);right:12px;width:36px;height:36px;border:none;border-radius:50%;background:#ffffff2e;color:#fff;font-size:16px;line-height:1}.composer-bar{display:flex;align-items:center;gap:6px;padding:2px 6px 0}.c-add{width:36px;height:36px;border-radius:50%;border:none;background:transparent;color:#1a1a1a;display:flex;align-items:center;justify-content:center;cursor:pointer;flex-shrink:0}.c-add:active{background:var(--tool)}.c-uploading{font-size:12px;color:var(--sub)}.c-right{margin-left:auto;display:flex;align-items:center;gap:8px}.c-send{width:38px;height:38px;border-radius:50%;border:none;background:var(--accent);color:#fff;display:flex;align-items:center;justify-content:center;cursor:pointer;flex-shrink:0}.c-send:disabled{background:var(--tool-border);cursor:default}.c-send.c-stop{background:#dc2626}.c-send.c-stop.waiting{opacity:.55;cursor:wait}.mode-wrap{position:relative}.mode-chip{display:flex;align-items:center;gap:3px;font:inherit;font-size:13px;color:#444;border:none;background:transparent;padding:6px 8px;border-radius:10px;cursor:pointer}.mode-chip:active{background:var(--tool)}.mode-caret{font-size:10px;color:var(--sub)}.mode-pop{position:absolute;right:0;bottom:calc(100% + 6px);z-index:40;min-width:218px;padding:6px;background:#fff;border:1px solid #e5e7eb;border-radius:14px;box-shadow:0 8px 28px #00000024}.mode-item{display:flex;flex-direction:column;gap:1px;width:100%;text-align:left;font:inherit;border:none;background:transparent;cursor:pointer;padding:8px 10px;border-radius:10px}.mode-item:active{background:var(--tool)}.mode-item.cur b{color:var(--accent)}.mode-item b{font-size:14px;color:#1a1a1a}.mode-hint{font-size:12px;color:var(--sub)}.form-page{position:fixed;inset:0;z-index:90;background:#fffffffa;display:flex;flex-direction:column;padding-top:env(safe-area-inset-top)}.form-head{display:flex;align-items:center;gap:8px;padding:12px;border-bottom:1px solid #e5e7eb;background:var(--card)}.form-head b{flex:1;font-size:15px}.form-head .s-close{font:inherit;font-size:13px;border:none;border-radius:8px;background:var(--tool);color:var(--accent);padding:7px 12px}.form-body{flex:1;overflow-y:auto;padding:14px 16px 24px;max-width:560px;width:100%;margin:0 auto;overscroll-behavior-y:contain}.f-row{margin:0 0 14px}.f-row>label{display:block;font-size:13px;color:var(--sub);margin-bottom:5px}.f-row input[type=text],.f-row textarea{width:100%;font:inherit;border:1px solid #e5e7eb;border-radius:10px;padding:9px 12px;background:var(--card);outline:none}.f-row textarea{resize:vertical;min-height:72px}.f-row input:focus,.f-row textarea:focus{border-color:var(--accent)}.f-hint{font-size:12px;color:var(--sub);margin-top:4px;word-break:break-all}.f-chips{display:flex;flex-wrap:wrap;gap:6px;margin-top:6px}.f-chips button{font:inherit;font-size:12px;border:1px solid var(--tool-border);border-radius:8px;background:var(--tool);color:var(--accent);padding:4px 10px}.f-submit{width:100%;font:inherit;border:none;border-radius:10px;background:var(--accent);color:#fff;padding:11px;margin-top:4px}.f-plain{width:100%;font:inherit;border:none;border-radius:10px;background:var(--tool);color:var(--accent);padding:11px;margin-top:10px}.f-plain.opt{border:1.5px solid transparent}.f-plain.opt.on{border-color:var(--accent);background:#fff;color:var(--accent)}.f-plain.go{background:var(--accent);color:#fff}.f-submit:disabled{opacity:.5}.f-danger{width:100%;font:inherit;border:1px solid var(--err);border-radius:10px;background:#fff;color:var(--err);padding:10px;margin-top:18px}.gate{position:fixed;inset:0;z-index:100;background:#fffffff5;display:flex;flex-direction:column;gap:12px;align-items:center;justify-content:center;padding:24px}.gate p{color:var(--sub);font-size:14px}.gate input{font:inherit;border:1px solid #e5e7eb;border-radius:10px;padding:10px 12px;width:min(320px,80vw);text-align:center;letter-spacing:1px}.gate button{font:inherit;border:none;border-radius:10px;background:var(--accent);color:#fff;padding:10px 28px}.gate button:disabled{opacity:.5}@media(max-width:859.98px){.sidebar{position:fixed;left:0;top:0;bottom:0;width:min(300px,84vw);transform:translate(-102%);transition:transform .22s ease;box-shadow:none}.layout.nav-open .sidebar{transform:translate(0);box-shadow:0 0 40px #0000002e}.sb-mask{display:none;position:fixed;inset:0;z-index:35;background:#00000052}.layout.nav-open .sb-mask,.nav-open-btn,.layout.nav-open .nav-close{display:block}}.bg-badge-wrap{position:relative;flex-shrink:0}.bg-badge{font:inherit;font-size:13px;line-height:1;border:1px solid var(--tool-border);border-radius:999px;background:var(--tool);color:var(--ink);padding:5px 10px;display:flex;gap:5px;align-items:center}.bg-badge .bg-count{font-size:12px;font-weight:600;color:var(--accent)}.bg-pop{position:absolute;top:calc(100% + 6px);right:0;z-index:30;width:min(340px,calc(100vw - 24px));background:var(--card);border:1px solid var(--tool-border);border-radius:var(--radius);box-shadow:0 8px 28px #00000024;padding:10px 12px}.bg-pop-head{display:flex;justify-content:space-between;align-items:baseline;gap:8px;font-size:12px;color:var(--sub);padding:2px 0 6px;border-bottom:1px solid var(--tool-border)}.bg-pop-head .bg-wake{color:var(--accent);white-space:nowrap}.bg-item{display:flex;gap:8px;padding:8px 0;border-bottom:1px solid var(--tool-border)}.bg-item:last-child{border-bottom:none;padding-bottom:2px}.bg-ico{flex-shrink:0;font-size:14px}.bg-main{flex:1;min-width:0}.bg-desc{font-size:13px;color:var(--ink);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.bg-cmd{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:11px;color:var(--sub);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;margin-top:2px}.bg-meta{font-size:11.5px;color:var(--sub);margin-top:3px}.bg-summary{font-size:11.5px;color:var(--sub);margin-top:3px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}