:root{--bg:#f5f6f8;--panel:#fff;--line:#e3e6ea;--text:#1c1f23;--muted:#6b7280;--brand:#1f4e79;--brand-soft:#e4edf6;--mine:#1f4e79;--mine-text:#fff;--theirs:#fff;--danger:#b42318;--ok:#157f3b;--radius:14px;--safe-top:env(safe-area-inset-top,0px);--safe-bottom:env(safe-area-inset-bottom,0px)}@media (prefers-color-scheme:dark){:root{--bg:#111418;--panel:#1a1f26;--line:#2a313b;--text:#e8ebef;--muted:#9aa3ae;--brand:#6ea4d9;--brand-soft:#1e2e40;--mine:#2b5f91;--theirs:#232a33}}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased;overscroll-behavior:none;font-family:-apple-system,BlinkMacSystemFont,Hiragino Sans,Hiragino Kaku Gothic ProN,Yu Gothic UI,Noto Sans JP,Segoe 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