:root{--canvas:#eeeeee;--paper:#ffffff;--header:#f1f1f1;--composer:#efefef;--ink:#111111;--muted:#8c8c8c;--soft-muted:#b2b2b2;--mint:#d8ebde;--ai-shell:#ededed;--field:#f0f0f0;--pink:#f5cfd0;--pink-strong:#ffcacc}*{box-sizing:border-box}body,html{min-height:100%;margin:0;background:var(--canvas);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,SF Pro Text,PingFang SC,Microsoft YaHei,sans-serif;letter-spacing:0}button,input,textarea{font:inherit}button{border:0;background:transparent;color:inherit;cursor:pointer;-webkit-tap-highlight-color:transparent}.app-shell{width:100vw;max-width:402px;min-height:100svh;margin:0;background:var(--paper);overflow:hidden}@media (min-width:520px){.app-shell{min-height:874px;margin-block:18px;margin-inline:auto;box-shadow:0 24px 80px rgba(0,0,0,.12)}}.plain-icon{width:48px;height:48px;display:grid;place-items:center}.chevron-left{width:15px;height:15px;border-left:4px solid;border-bottom:4px 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env(safe-area-inset-bottom));display:grid;grid-template-columns:38px minmax(0,1fr) 42px;grid-gap:6px;gap:6px;align-items:center;padding:7px 8px calc(7px + env(safe-area-inset-bottom));background:var(--composer)}.mode-button{width:30px;height:30px;display:grid;place-items:center;color:#8a8a8a}.mode-glyph{position:relative;width:27px;height:27px;display:block;border:1.4px solid;border-radius:50%}.mode-ai_off .mode-glyph:before,.mode-ai_on .mode-glyph:before{position:absolute;inset:0;display:grid;place-items:center;color:currentColor;font-size:15px;content:"ai"}.mode-ai_off .mode-glyph:after{position:absolute;left:-4px;top:12px;width:35px;height:1.4px;border-radius:2px;background:currentColor;transform:rotate(22deg);content:""}.mode-todo .mode-glyph{border-color:#111111;background:#ffffff}.composer input{width:100%;height:35px;border:0;border-radius:18px;padding:0 12px;outline:0;background:#ffffff;color:var(--ink);font-size:16px}.composer 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