:root{--bg:#0e0f12;--bg-elev:#16181d;--bg-hover:#1f2229;--border:#2a2e37;--text:#e6e8ec;--muted:#8b92a1;--accent:#d97757;--accent-fill:#b8573a;--accent-ink:#fff;--border-strong:#636a79;--ok:#4cc38a;--warn:#e5a93b;--err:#e5534b;--user-bubble:#23262e;--code-bg:#0a0b0d;--scrim:#00000080;--radius:10px;--radius-lg:16px;--font:"Inter", system-ui, -apple-system, sans-serif;--mono:"JetBrains Mono", ui-monospace, Menlo, monospace;--tap:44px;--gutter:16px;--topbar-h:52px;--sidebar-w:min(300px, 85vw);--panel-w:280px;--safe-t:env(safe-area-inset-top,0px);--safe-b:env(safe-area-inset-bottom,0px);--safe-l:env(safe-area-inset-left,0px);--safe-r:env(safe-area-inset-right,0px);--ease:cubic-bezier(.2, .8, .2, 1);--syn-keyword:#d6a0ff;--syn-string:#9fd88a;--syn-number:#f2b36b;--syn-comment:#7f8592;--syn-func:#7cc4ff;--syn-type:#f0d27a;--syn-attr:#8fd3d0;--chart-bar:#4a505c;--series-1:#3987e5;--series-2:#d95926;--series-3:#199e70;--series-4:#c98500;--grid:#23262e;--axis:#3a3f4a}:root[data-theme=light]{--bg:#fbfaf8;--bg-elev:#fff;--bg-hover:#f1efeb;--border:#e3e0da;--text:#1d1d1f;--muted:#6b6b70;--accent:#b8573a;--border-strong:#8a857d;--ok:#1f7a4d;--warn:#8a5d00;--err:#b3261e;--user-bubble:#f0eee9;--code-bg:#f6f5f2;--scrim:#0000004d;--syn-keyword:#8a3fd1;--syn-string:#2f7d32;--syn-number:#b4580e;--syn-comment:#6b6b70;--syn-func:#1f63b8;--syn-type:#8a6a00;--syn-attr:#0f7a76;--chart-bar:#c9c5bd;--series-1:#2a78d6;--series-2:#eb6834;--series-3:#1baf7a;--series-4:#eda100;--grid:#eeebe5;--axis:#c3c2b7}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}html,body{overscroll-behavior:none;height:100%;margin:0;overflow:hidden}body{background:var(--bg);color:var(--text);font:15px/1.55 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.row--end{flex-direction:column-reverse;align-items:stretch}.modal__title{font-size:17px;font-weight:600}.toasts{left:var(--gutter);right:var(--gutter);top:calc(var(--topbar-h) + var(--safe-t) + 8px);z-index:60;pointer-events:none;flex-direction:column;align-items:center;gap:8px;display:flex;position:fixed}.toast{background:var(--text);color:var(--bg);border-radius:999px;padding:10px 16px;font-size:13px;animation:.2s ease-out rise;box-shadow:0 8px 24px #0000004d}@keyframes rise{0%{opacity:0;transform:translateY(12px)}}@media (hover:hover) and (pointer:fine){.screen-nav__item:hover,.session:hover{background:var(--bg-hover)}.btn:hover,.icon-btn:hover,.ghost-btn:hover,.pill:hover{background:var(--bg-hover);color:var(--text)}.btn--primary:hover{background:var(--accent-fill);color:var(--accent-ink);filter:brightness(1.08)}.btn--danger:hover{background:var(--err);color:#fff;filter:brightness(1.08)}.msg__actions{opacity:0;transition:opacity .15s}.msg--assistant:hover .msg__actions{opacity:1}}@media (min-width:900px){:root{--tap:36px;--gutter:24px}body{font-size:14px}.hide-mobile{display:revert!important}.hide-desktop{display:none!important}.sidebar{width:260px;box-shadow:none;padding:12px;position:static;transform:none}.backdrop.is-visible:not(.for-panel){opacity:0;pointer-events:none}.topbar{gap:12px;padding:0 16px}.icon-btn{width:32px;height:32px;font-size:15px}.msg--assistant{flex-direction:row;gap:12px}.msg--assistant>.avatar{width:32px;height:32px;font-size:12px}.msg--user .msg__body{max-width:80%}.composer{border:1px solid var(--border);border-radius:var(--radius-lg);width:calc(100% - 32px);max-width:760px;margin:0 auto 16px;padding:8px 10px}.composer:focus-within{border-color:var(--muted)}.composer__input{min-height:32px;max-height:240px;padding:4px 6px;font-size:14px}.send-btn{width:32px;height:32px;font-size:16px}.panel{width:var(--panel-w);border-top:0;border-left:1px solid var(--border);border-radius:0;max-height:none;padding:16px;top:0;left:auto;transform:translate(100%)}.panel.is-open{transform:none}.gallery{padding:32px var(--gutter)}.input,.select{font-size:14px}.toggle__track{width:32px;height:18px}.toggle__track:after{width:14px;height:14px;top:2px;left:2px}.toggle input:checked+.toggle__track:after{transform:translate(14px)}.modal{justify-content:center;align-items:center;padding:16px}.modal__box{border:1px solid var(--border);border-radius:var(--radius-lg);max-width:420px;padding:20px}.modal__box .row--end{flex-direction:row;justify-content:flex-end}.toasts{align-items:flex-end;inset:auto 16px 16px auto}.toast{border-radius:var(--radius)}}@media (min-width:1200px){.hide-wide{display:none!important}.panel{visibility:visible;box-shadow:none;position:static;transform:none}.panel.is-collapsed{display:none}.backdrop.for-panel{opacity:0;pointer-events:none}}@media 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img{object-fit:cover;width:100%;height:100%;position:absolute;inset:0}.tile__label{white-space:nowrap;text-overflow:ellipsis;border-top:1px solid var(--border);padding:4px 8px 6px;font-size:11px;font-weight:500;overflow:hidden}.tile__x{background:var(--scrim);color:#fff;border-radius:50%;place-items:center;width:22px;height:22px;font-size:14px;font-weight:400;display:grid;position:absolute;top:3px;right:3px}.msg__stack{flex-direction:column;align-items:flex-end;gap:6px;max-width:85%;display:flex}.msg__stack .msg__body{max-width:100%}.msg__tiles{flex-wrap:wrap;justify-content:flex-end;gap:6px;display:flex}.ctx-item{align-items:center;gap:8px;display:flex}.ctx-item code{text-overflow:ellipsis;white-space:nowrap;flex:1;min-width:0;overflow:hidden}.icon-btn--sm{width:32px;height:32px;font-size:13px}.modal__box--wide{flex-direction:column;gap:12px;max-width:640px;max-height:85dvh;display:flex}.viewer__body{white-space:pre;flex:1;overflow:auto}.icon-btn--plus{border:1px solid var(--border);width:36px;height:36px;color:var(--text);transition:transform .2s var(--ease);border-radius:50%;line-height:1}.icon-btn--plus.is-open{background:var(--bg-hover);transform:rotate(45deg)}.composer__left{scrollbar-width:none;flex:1;overflow-x:auto}.mode-pills{gap:4px;display:flex}.pill--on{color:var(--text);border-color:var(--accent);background:color-mix(in srgb, var(--accent) 14%, transparent)}.pill--on b{color:var(--muted);font-weight:400}.plus-menu{z-index:20;background:var(--bg-elev);border:1px solid var(--border);border-radius:var(--radius-lg);padding:6px;animation:.15s ease-out rise;position:absolute;bottom:calc(100% + 6px);left:10px;right:10px;box-shadow:0 8px 28px #00000059}.plus-menu[hidden]{display:none}.menu-item{text-align:left;background:0 0;border:0;border-radius:10px;align-items:center;gap:12px;width:100%;min-height:52px;padding:6px 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