:root{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;--bg:#f7f7f4;--surface:#fff;--surface-muted:#f3f4f1;--surface-soft:#fafaf8;--ink:#171717;--ink-soft:#3f3f3f;--muted:#6f706c;--border:#deded8;--border-strong:#c8c9c2;--accent:#155e75;--accent-hover:#0f4f63;--accent-soft:#e7f2f4;--danger:#b42318;--danger-bg:#fff1f0;--success:#26734d;--shadow:0 20px 70px #1818161a}*{box-sizing:border-box}html,body{min-height:100%;margin:0}body{background:linear-gradient(180deg, #ffffffe0, #ffffff38), var(--bg);color:var(--ink);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}button,textarea,input{font:inherit}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.58}a{color:var(--accent)}.shell{min-height:100vh;padding:24px}.agent-shell{grid-template-columns:280px minmax(0,1fr);gap:16px;width:min(1440px,100%);min-height:calc(100vh - 48px);margin:0 auto;display:grid}.history-sidebar,.app-frame,.login-panel{border:1px solid 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