:root{color-scheme:light;--bg-1:#ffffff;--bg-2:#ffffff;--bg-sidebar:#f9f9f9;--surface:#ffffff;--surface-soft:#f4f4f4;--surface-hover:#ececec;--surface-active:#e0e2e6;--bubble-user:#fbe7cc;--border-hair:rgba(0,0,0,0.08);--border-soft:rgba(0,0,0,0.14);--border:#e5e5e5;--text-strong:#0d0d0d;--text:#0d0d0d;--text-muted:#5d5d5d;--text-subtle:#8f8f8f;--accent:#3C7CAC;--accent-fg:#ffffff;--accent-hover:#2E6795;--accent-rgb:60,124,172;--accent-soft:#E4EEF5;--ok:#10a37f;--warn:#d97706;--danger:#dc2626;--amber:#d97706;--cyan:var(--accent);--blue:var(--accent);--cyan-soft:rgba(60,124,172,0.10);--blue-soft:rgba(60,124,172,0.10);--amber-soft:rgba(217,119,6,0.14);--panel:var(--surface);--panel-illum:var(--surface);--panel-recess:var(--surface-soft);--r-xs:8px;--r-sm:10px;--r-md:14px;--r-lg:18px;--r-xl:26px;--edge-inner:0 0 #0000;--edge-hair:0 0 0 1px var(--border-hair);--lift-1:0 1px 2px rgba(0,0,0,0.05);--lift-2:0 8px 30px rgba(0,0,0,0.12);--recess:0 0 #0000;--glow-cyan:0 0 0 2px rgba(var(--accent-rgb),0.12);--glow-blue:0 0 0 2px rgba(var(--accent-rgb),0.12);--glow-amber:0 0 0 2px rgba(217,119,6,0.20);--sp-1:4px;--sp-2:8px;--sp-3:12px;--sp-4:16px;--sp-5:24px;--sp-6:32px;--sp-7:48px;--ease:cubic-bezier(0.4,0,0.2,1);--dur-1:150ms;--dur-2:240ms;--font-sans:"Inter",ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,"Apple Color Emoji","Segoe UI Emoji",sans-serif;--font-mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace}@media (prefers-color-scheme:dark){:root{color-scheme:dark;--bg-1:#212121;--bg-2:#212121;--bg-sidebar:#171717;--surface:#212121;--surface-soft:#2f2f2f;--surface-hover:#2f2f2f;--surface-active:#383838;--bubble-user:#3a3020;--border-hair:rgba(255,255,255,0.10);--border-soft:rgba(255,255,255,0.16);--border:#3a3a3a;--text-strong:#ececec;--text:#ececec;--text-muted:#b4b4b4;--text-subtle:#8f8f8f;--accent:#6FA8D1;--accent-fg:#0E141B;--accent-hover:#85B7DB;--accent-rgb:111,168,209;--accent-soft:rgba(111,168,209,0.16);--cyan-soft:rgba(111,168,209,0.14);--blue-soft:rgba(111,168,209,0.14);--lift-1:0 1px 2px rgba(0,0,0,0.40);--lift-2:0 8px 30px rgba(0,0,0,0.50)}}*,:after,:before{box-sizing:border-box}[hidden]{display:none!important}:where(a,button,input,select,textarea,summary,[tabindex]):focus-visible{outline:2px solid color-mix(in srgb,var(--blue) 82%,transparent);outline-offset:2px}body,html{margin:0;height:100%}body{font-family:var(--font-sans);font-size:14px;line-height:1.5;color:var(--text);background:var(--bg-1);overflow:hidden;letter-spacing:.005em;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}button,input,textarea{font:inherit;color:inherit}.visually-hidden{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}.hull{display:grid;grid-template-columns:260px 1fr;grid-template-rows:1fr auto;grid-template-areas:"nav main""nav ftr";gap:0;padding:0;height:100vh}.hull-footer,.hull-main,.hull-nav{background:var(--surface);position:relative;min-height:0}.hull-nav{grid-area:nav;display:flex;flex-direction:column;padding:var(--sp-2);gap:var(--sp-1);overflow:hidden;background:var(--bg-sidebar);border-right:1px solid var(--border)}.nav-brand{display:flex;align-items:center;gap:var(--sp-2);padding:var(--sp-2) var(--sp-3) var(--sp-3)}.nav-brand .brand-mark{color:var(--text-strong);display:inline-flex;align-items:center}.nav-brand .brand-name{font-size:15px;font-weight:600;color:var(--text-strong)}.nav-account{margin-top:auto;display:flex;flex-direction:column;gap:var(--sp-1);padding:var(--sp-2) var(--sp-1) 2px;border-top:1px solid var(--border)}.nav-account .auth-badge{display:flex;align-items:center;justify-content:space-between;gap:var(--sp-2);padding:2px var(--sp-2)}.nav-account .auth-user{font-size:13px;font-weight:600;color:var(--text);max-width:none}.nav-account-actions{display:inline-flex;align-items:center;gap:2px;flex:none}.nav-account .icon-btn{width:30px;height:30px}.hull-main{grid-area:main;display:grid;grid-template-rows:auto 1fr auto;overflow:hidden}.hull-aside{display:none}@media (width>=1180px){.hull.metrics-on{grid-template-columns:260px 1fr 300px;grid-template-areas:"nav main asd""nav ftr asd"}.hull.metrics-on .hull-aside{grid-area:asd;display:flex;flex-direction:column;gap:var(--sp-3);padding:var(--sp-3);overflow-y:auto;background:var(--surface);border-left:1px solid var(--border);min-height:0}}.hull-footer{grid-area:ftr;display:flex;align-items:center;justify-content:center;padding:4px var(--sp-4);min-height:0;font-size:11px;color:var(--text-subtle)}.footer-meta{display:none}.brand{display:flex;align-items:baseline;gap:var(--sp-3)}.brand-mark{color:var(--text-strong);display:inline-flex;align-items:center;transform:translateY(3px)}.brand-mark 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rgba(var(--accent-rgb),.32)}.btn{--btn-bg:var(--surface);--btn-fg:var(--text-strong);display:inline-flex;align-items:center;justify-content:center;gap:var(--sp-2);padding:9px 14px;border:1px solid var(--border);border-radius:999px;background:var(--btn-bg);color:var(--btn-fg);font-size:13px;font-weight:500;letter-spacing:0;cursor:pointer;transition:background var(--dur-1) var(--ease),border-color var(--dur-1) var(--ease),opacity var(--dur-1) var(--ease),transform var(--dur-1) var(--ease)}.btn:hover:not(:disabled){background:var(--surface-hover)}.btn:active:not(:disabled){transform:translateY(.5px)}.btn:disabled{opacity:.4;cursor:not-allowed}.btn-primary{--btn-bg:var(--surface)}.btn-accent{--btn-fg:var(--accent-fg);--btn-bg:var(--accent);border-color:#0000}.btn-accent:hover:not(:disabled){background:var(--accent-hover)}.icon-btn{width:34px;height:34px;padding:0;border-radius:var(--r-sm);display:inline-flex;align-items:center;justify-content:center;background:#0000;color:var(--text-muted);border:0;cursor:pointer;transition:background var(--dur-1) var(--ease),color var(--dur-1) var(--ease)}.icon-btn:hover:not(:disabled){color:var(--text-strong);background:var(--surface-hover)}.icon-btn:disabled{opacity:.4;cursor:not-allowed}#new-chat{width:100%;justify-content:flex-start;gap:var(--sp-2);padding:10px var(--sp-3);font-weight:500;background:#0000;border-color:#0000}#new-chat:hover:not(:disabled){background:var(--surface-hover)}.nav-label{font-size:11px;font-weight:600;letter-spacing:.02em;text-transform:none;color:var(--text-subtle);padding:0 var(--sp-3);margin-top:var(--sp-3)}#chat-list{list-style:none;margin:0;padding:0;overflow:hidden auto;flex:auto;display:flex;flex-direction:column;gap:1px}#chat-list li{padding:9px var(--sp-3);border-radius:var(--r-sm);cursor:pointer;font-size:14px;color:var(--text);transition:background var(--dur-1) var(--ease),color var(--dur-1) var(--ease);display:flex;align-items:center;gap:8px;-webkit-user-select:none;user-select:none}.chat-title{flex:auto;min-width:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.chat-pending-dot{flex:none;width:7px;height:7px;border-radius:50%;background:var(--ok);animation:chat-pending-pulse 1.4s ease-in-out infinite}@keyframes chat-pending-pulse{0%,to{opacity:1;transform:scale(1)}50%{opacity:.55;transform:scale(.82)}}#chat-list li:hover{background:var(--surface-hover)}#chat-list li:focus-visible{outline:none;background:var(--surface-hover);box-shadow:inset 0 0 0 2px color-mix(in srgb,var(--accent) 40%,transparent)}#chat-list li.active{background:var(--surface-active);color:var(--text-strong);font-weight:500;box-shadow:inset 3px 0 0 0 var(--accent)}#chat-list li.chat-item.selected,#chat-list li.chat-item.selected:hover{background:var(--accent-soft);color:var(--text-strong);box-shadow:inset 3px 0 0 0 var(--accent)}#chat-list li.active:focus-visible{box-shadow:inset 0 0 0 2px color-mix(in srgb,var(--accent) 40%,transparent)}.nav-label-row{display:flex;align-items:center;justify-content:space-between;margin-top:var(--sp-3);padding-right:var(--sp-1)}.nav-label-row .nav-label{margin-top:0}.nav-folder-btn{display:inline-flex;align-items:center;justify-content:center;width:26px;height:26px;padding:0;border:0;border-radius:var(--r-xs);background:#0000;color:var(--text-subtle);cursor:pointer;transition:background var(--dur-1) var(--ease),color var(--dur-1) var(--ease)}.nav-folder-btn:hover{background:var(--surface-hover);color:var(--text-strong)}#chat-list li.chat-folder{gap:6px;color:var(--text-muted);font-size:13px;font-weight:600;user-select:none}#chat-list li.chat-item.dragging{opacity:.45}#chat-list li.chat-folder.drag-over{background:var(--accent-soft);color:var(--text-strong);box-shadow:inset 0 0 0 2px var(--accent)}.chat-folder-chevron{flex:none;display:inline-flex;transition:transform var(--dur-1) var(--ease)}.chat-folder-chevron.open{transform:rotate(90deg)}.chat-folder-name{flex:auto;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.chat-folder-count{flex:none;font-size:11px;font-weight:600;color:var(--text-subtle)}#chat-list li.chat-item-indent{margin-left:14px}.row-menu-btn{flex:none;display:inline-flex;align-items:center;justify-content:center;width:24px;height:24px;padding:0;border:0;border-radius:var(--r-xs);background:#0000;color:var(--text-subtle);cursor:pointer;opacity:0;transition:opacity var(--dur-1) var(--ease),background var(--dur-1) var(--ease),color var(--dur-1) var(--ease)}#chat-list li:focus-within .row-menu-btn,#chat-list li:hover .row-menu-btn,.row-menu-btn:focus-visible{opacity:1}.row-menu-btn:hover{background:var(--surface-hover);color:var(--text-strong)}.nav-search{position:relative;display:flex;align-items:center;margin:8px 0 4px}.nav-search-icon{position:absolute;left:10px;color:var(--text-subtle);pointer-events:none}.nav-search-input{width:100%;height:34px;padding:0 30px 0 32px;border:1px solid var(--border-hair);border-radius:var(--r-sm);background:var(--surface-soft);color:var(--text);font:inherit;font-size:13px;outline:none;transition:border-color var(--dur-1) var(--ease),background var(--dur-1) var(--ease)}.nav-search-input::placeholder{color:var(--text-subtle)}.nav-search-input:focus{border-color:color-mix(in srgb,var(--accent) 55%,transparent);background:var(--surface)}.nav-search-input::-webkit-search-cancel-button{-webkit-appearance:none;appearance:none}.nav-search-clear{position:absolute;right:6px;display:inline-flex;align-items:center;justify-content:center;width:22px;height:22px;padding:0;border:0;border-radius:var(--r-xs);background:#0000;color:var(--text-subtle);cursor:pointer}.nav-search-clear:hover{background:var(--surface-hover);color:var(--text-strong)}#chat-list li.chat-section-head{flex-direction:column;align-items:flex-start;padding:10px var(--sp-3) 4px;font-size:11px;font-weight:600;letter-spacing:.04em;text-transform:uppercase;color:var(--text-subtle);cursor:default;background:none;box-shadow:none}#chat-list li.chat-section-head:hover{background:none}#chat-list li.chat-section-head:after{content:"";display:block;width:22px;height:2px;margin-top:5px;border-radius:2px;background:var(--accent)}#chat-list li.chat-more{padding:2px var(--sp-3) 6px;cursor:default;background:none}#chat-list li.chat-more:hover{background:none}.chat-more-btn{width:100%;text-align:left;padding:7px 10px;border:0;border-radius:var(--r-sm);background:#0000;color:var(--text-muted);font:inherit;font-size:13px;cursor:pointer;transition:background var(--dur-1) var(--ease),color var(--dur-1) var(--ease)}.chat-more-btn:hover{background:var(--surface-hover);color:var(--text-strong)}#chat-list li.chat-search-empty{padding:14px var(--sp-3);color:var(--text-muted);font-size:13px;font-style:italic;cursor:default;background:none}#chat-list li.chat-search-empty:hover{background:none}.popover-menu{position:fixed;z-index:200;min-width:180px;max-width:260px;padding:4px;border-radius:var(--r-md);background:var(--surface);border:1px solid var(--border);box-shadow:var(--lift-2);display:flex;flex-direction:column;gap:1px}.popover-item{text-align:left;padding:8px 10px;border:0;border-radius:var(--r-xs);background:#0000;color:var(--text);font:inherit;font-size:13px;cursor:pointer;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.popover-item:hover{background:var(--surface-hover)}.popover-item.danger{color:var(--danger)}.popover-header{padding:7px 10px 4px;font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.04em;color:var(--text-subtle)}.popover-sep{height:1px;margin:4px 6px;background:var(--border)}.conv-head{display:flex;align-items:center;gap:var(--sp-1);padding:var(--sp-2) var(--sp-3);min-height:48px;border-bottom:1px solid var(--border)}.title-input{flex:1;min-width:0;padding:6px var(--sp-2);border:0;border-radius:var(--r-sm);background:#0000;color:var(--text-strong);font-size:15px;font-weight:500;outline:none;transition:background var(--dur-1) var(--ease)}.title-input::placeholder{color:var(--text-subtle)}.title-input:focus,.title-input:hover{background:var(--surface-hover)}.conv-body{position:relative;overflow:hidden;min-height:0;background:var(--bg-1)}.watermark{display:none}.messages{position:absolute;inset:0;overflow-y:auto;padding:var(--sp-5) var(--sp-4) var(--sp-6);display:flex;flex-direction:column;gap:var(--sp-5);z-index:1;scroll-behavior:smooth}.messages>*{width:100%;max-width:768px;margin-inline:auto}.jump-to-bottom{position:absolute;left:50%;bottom:var(--sp-4);transform:translate(-50%);z-index:3;display:inline-flex;align-items:center;gap:var(--sp-2);padding:8px 16px 8px 12px;border:1px solid var(--border-soft);border-radius:var(--r-xl);background:var(--bg-2);color:var(--text);font:inherit;font-size:.875rem;line-height:1;cursor:pointer;box-shadow:0 6px 20px #0000002e,var(--edge-hair);opacity:1;transition:opacity.15s,transform.15s,background.15s}.jump-to-bottom:hover{background:var(--accent-soft);border-color:var(--accent)}.jump-to-bottom:focus-visible{outline:none;box-shadow:0 6px 20px #0000002e,var(--glow-cyan)}.jump-to-bottom svg{flex:none}.jump-to-bottom[hidden]{display:none}@media (prefers-reduced-motion:reduce){.jump-to-bottom{transition:none}}.chat-empty{margin:auto;display:flex;flex-direction:column;align-items:center;gap:var(--sp-3);max-width:560px;padding:var(--sp-5) 0;text-align:center;animation:msg-in var(--dur-2) var(--ease)}.chat-empty-hero{width:min(100%,460px);height:auto;margin-bottom:var(--sp-1);user-select:none;pointer-events:none;-webkit-user-drag:none}.chat-empty-mark{display:grid;place-items:center;width:58px;height:58px;border-radius:50%;color:var(--blue);background:radial-gradient(circle at 50% 40%,var(--cyan-soft),transparent 70%);box-shadow:var(--edge-hair)}.chat-empty-title{margin:0;font-size:22px;font-weight:700;letter-spacing:-.01em;color:var(--text-strong)}.chat-empty-sub{margin:0;max-width:42ch;font-size:14px;line-height:1.5;color:var(--text-muted);text-wrap:balance}.chat-empty-prompts{display:flex;flex-wrap:wrap;justify-content:center;gap:var(--sp-2);margin-top:var(--sp-2)}.prompt-chip{padding:12px 16px;border:1px solid var(--border);border-radius:var(--r-md);font:inherit;font-size:13px;color:var(--text);background:var(--surface);cursor:pointer;transition:color var(--dur-1) var(--ease),background var(--dur-1) var(--ease),border-color var(--dur-1) var(--ease)}.prompt-chip:hover{color:var(--text-strong);background:var(--surface-hover)}.prompt-chip:focus-visible{outline:none;border-color:var(--accent)}.chat-empty-hint{margin:var(--sp-2) 0 0;font-size:12px;color:var(--text-subtle)}.hull-main.landing{display:flex;flex-direction:column;position:relative}.hull-main.landing:before{content:"";position:absolute;left:50%;top:52%;width:min(920px,88%);height:460px;transform:translate(-50%,-50%);background:radial-gradient(ellipse at center,#5a8dff33,#5fd8ff1a 42%,#0000 72%);pointer-events:none;z-index:0}.hull-main.landing .conv-body{flex:none;margin-top:auto;overflow:visible;background:#0000;position:relative;z-index:1}.hull-main.landing .messages{position:static;padding:0;overflow:visible}.hull-main.landing .composer{margin-top:0;margin-bottom:auto;position:relative;z-index:1}.hull-main.landing .chat-empty{padding:0 0 var(--sp-5);gap:0;animation:none}.hull-main.landing .chat-empty-title{font-size:clamp(28px,4vw,40px);font-weight:600;letter-spacing:-.02em}.msg{position:relative;display:flex;flex-direction:column;line-height:1.65;font-size:15px;color:var(--text);word-wrap:break-word;animation:msg-in var(--dur-2) var(--ease)}@keyframes msg-in{0%{opacity:0;transform:translateY(4px)}to{opacity:1;transform:translateY(0)}}.msg.user{align-items:flex-end}.msg.user .body{display:inline-block;max-width:85%;padding:10px 16px;border-radius:20px;background:var(--bubble-user);color:var(--text-strong);white-space:pre-wrap}.msg.assistant{align-items:stretch}.msg.assistant .body{white-space:normal;padding-left:14px;border-left:3px solid var(--accent);border-radius:2px}.msg-actions{display:flex;align-items:center;gap:2px;margin-top:6px;opacity:.55;transition:opacity var(--dur-1) var(--ease)}.msg-actions:focus-within,.msg.assistant:hover .msg-actions,.msg.user:hover .msg-actions{opacity:1}@media (hover:none){.msg-actions{opacity:.85}}.msg.user 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var(--ease)}.voice-menu-btn:hover{background:var(--surface-hover);color:var(--text-strong)}.voice-retx-dialog .dialog-form{width:min(420px,92vw)}.voice-wave.transcribing .voice-bar{transform-origin:50%100%;background:var(--accent);opacity:.85;animation:voiceWobble.9s ease-in-out infinite;animation-delay:calc(var(--i,0)*.06s)}@keyframes voiceWobble{0%,to{transform:scaleY(.4)}50%{transform:scaleY(1)}}@media (prefers-reduced-motion:reduce){.voice-wave.transcribing .voice-bar{animation:none;opacity:.6}}.admin-prompt-editor{width:100%;min-height:260px;resize:vertical;font-family:var(--font-mono,ui-monospace,monospace);font-size:12.5px;line-height:1.45;white-space:pre}.toast-box{position:fixed;right:20px;bottom:20px;display:flex;flex-direction:column;gap:8px;z-index:200}.toast{display:flex;align-items:center;gap:9px;padding:10px 14px;border-radius:10px;background:var(--text-strong);color:var(--bg-1);font-size:13px;font-weight:500;box-shadow:var(--lift-2);animation:toast-in.18s 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var(--trace-lane,var(--border-soft));border-radius:8px;background:var(--surface);overflow:hidden}.trace-step[data-lane=user]{--trace-lane:#3C7CAC}.trace-step[data-lane=assembly]{--trace-lane:#6d55b8}.trace-step[data-lane=model]{--trace-lane:#1c8f6b}.trace-step[data-lane=tool]{--trace-lane:#b5710e}.trace-step[data-lane=system]{--trace-lane:#5b6875}@media (prefers-color-scheme:dark){.trace-step[data-lane=user]{--trace-lane:#6FA8D1}.trace-step[data-lane=assembly]{--trace-lane:#a794e6}.trace-step[data-lane=model]{--trace-lane:#45c79e}.trace-step[data-lane=tool]{--trace-lane:#e0b25a}.trace-step[data-lane=system]{--trace-lane:#97a6b5}}.trace-step-head{display:flex;align-items:center;gap:10px;padding:9px 12px;cursor:pointer}.trace-lane{font-size:10.5px;font-weight:700;letter-spacing:.03em;padding:2px 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