:root{--bg:#e9e9ee;--surface:#fff;--surface-alt:#f4f3fb;--text:#1c1c22;--text-muted:#6b6b76;--accent:#6236ff;--accent-contrast:#fff;--key-bg:#fff;--key-text:#6236ff;--key-op-bg:#efeaff;--key-op-text:#6236ff;--key-mem-bg:#e4dcff;--error:#d1364b;--shadow:#0000001f;--overlay-bg:#14121ed1;--overlay-text:#fff;--overlay-text-muted:#ffffffb3;--overlay-text-faint:#fff9;--overlay-border:#ffffff1f;--overlay-hover:#ffffff0f;--accent-strong:#4a1fd6;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light}:root[data-theme=dark]{--bg:#17161d;--surface:#201f29;--surface-alt:#2a2836;--text:#f1f0f5;--text-muted:#a3a1af;--accent:#8b6bff;--accent-contrast:#fff;--key-bg:#2a2836;--key-text:#cabfff;--key-op-bg:#362f52;--key-op-text:#cabfff;--key-mem-bg:#362f52;--error:#ff6b81;--shadow:#0006;--overlay-bg:#0a090fe6;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}*{box-sizing:border-box}@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important}}[hidden]{display:none!important}body{background:var(--bg);min-height:100vh;color:var(--text);justify-content:center;align-items:flex-start;margin:0;padding:clamp(12px,4vw,32px);font-family:Segoe UI,Arial,sans-serif;display:flex}#app{flex-direction:column;gap:8px;width:100%;max-width:460px;transition:max-width .15s;display:flex}#app.wide{max-width:clamp(460px,92vw,1100px)}.topbar{align-items:center;gap:8px;display:flex}.topbar-spacer{flex:1}.pill{background:var(--surface);color:var(--text);cursor:pointer;box-shadow:0 1px 3px var(--shadow);border:none;border-radius:999px;padding:8px 14px;font-size:13px;font-weight:600}.icon-button{background:var(--surface);color:var(--text);cursor:pointer;width:44px;height:44px;box-shadow:0 1px 3px var(--shadow);border:none;border-radius:50%;justify-content:center;align-items:center;display:inline-flex}.pill:hover,.icon-button:hover{filter:brightness(1.08)}#calculator{background:var(--surface);box-shadow:0 8px 30px var(--shadow);border-radius:20px;padding:16px}.app-tagline{text-align:center;color:var(--text-muted);margin:0;padding:0 4px;font-size:13px}.welcome-banner{background:linear-gradient(135deg, var(--accent-strong), #6236ff);color:#fff;box-shadow:0 8px 24px var(--shadow);border-radius:16px;flex-direction:column;gap:12px;padding:16px 18px;display:flex}.welcome-banner p{margin:0;font-size:14px;line-height:1.6}.welcome-banner .pill{color:var(--accent-strong);background:#fff;align-self:flex-start}.welcome-content{align-items:flex-start;gap:14px;display:flex}.mascot{flex:none;display:flex}.mascot-large{filter:drop-shadow(0 4px 8px #00000026)}.mascot-small{align-self:center}.hint{background:var(--surface-alt);color:var(--text-muted);border-radius:10px;margin:0;padding:10px 12px;font-size:13px;line-height:1.5}.hint code{background:var(--key-op-bg);color:var(--key-op-text);border-radius:4px;padding:1px 5px;font-family:Consolas,monospace;font-size:12px}.ask-form{gap:8px;display:flex}.ask-form input{min-width:0;font:inherit;border:1px solid var(--key-op-bg);background:var(--surface);color:var(--text);border-radius:999px;flex:1;padding:10px 14px;font-size:14px}.ask-form button{flex:none}.ask-examples{flex-wrap:wrap;align-items:center;gap:6px;margin-top:8px;display:flex}.ask-examples-label{color:var(--text-muted);font-size:12px;font-weight:600}.chip{background:var(--key-op-bg);color:var(--key-op-text);cursor:pointer;border:none;border-radius:999px;min-height:24px;padding:9px 14px;font-size:12px;font-weight:600}.chip:hover{filter:brightness(.95)}:root[data-theme=dark] .chip:hover{filter:brightness(1.2)}.chip:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.ask-result{background:var(--surface);box-shadow:0 4px 16px var(--shadow);border-radius:14px;margin-top:8px;padding:12px 16px}.ask-title{color:var(--text-muted);text-transform:uppercase;letter-spacing:.03em;font-size:12px}.ask-value{white-space:pre-wrap;word-break:break-word;margin-top:2px;font-size:18px;font-weight:600}.ask-detail{color:var(--text-muted);white-space:pre-wrap;margin-top:6px;font-size:13px}.ask-error{color:var(--error);font-size:14px}.ask-suggestions{flex-wrap:wrap;gap:6px;margin-top:6px;display:flex}.ask-suggestions .pill{padding:6px 10px;font-size:12px}.mode-tabs{flex-wrap:wrap;gap:6px;display:flex}.mode-tab{background:var(--surface);color:var(--text-muted);cursor:pointer;white-space:nowrap;border:none;border-radius:999px;flex:none;padding:8px 14px;font-size:13px;font-weight:600}.mode-tab[aria-selected=true]{background:var(--accent-strong);color:var(--accent-contrast)}.mode-tab:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.panel{background:var(--surface);box-shadow:0 8px 30px var(--shadow);border-radius:20px;flex-direction:column;gap:10px;padding:16px;display:flex}.panel h2{color:var(--text-muted);margin:10px 0 0;font-size:14px}.panel h2:first-child{margin-top:0}.form-row{flex-wrap:wrap;align-items:flex-end;gap:10px;display:flex}.form-row label{color:var(--text-muted);flex-direction:column;flex:1;gap:4px;min-width:90px;font-size:12px;display:flex}.form-row input,.form-row select,.panel textarea{font:inherit;border:1px solid var(--key-op-bg);background:var(--surface-alt);color:var(--text);border-radius:8px;padding:8px 10px;font-size:15px}.panel textarea{resize:vertical;width:100%;font-family:Consolas,monospace}.button-row{flex-wrap:wrap;gap:8px;display:flex}.readout{white-space:pre-wrap;word-break:break-word;margin:0;font-size:16px;font-weight:600}.result-list{grid-template-columns:auto 1fr;gap:4px 12px;margin:0;display:grid}.result-list dt{color:var(--text-muted);font-size:13px}.result-list dd{margin:0;font-weight:600}.matrix-grid{gap:6px;display:inline-grid}.matrix-grid input{text-align:center;width:56px}.matrix-grid-readonly{background:var(--surface-alt);border-radius:8px;padding:10px}.matrix-editors{flex-wrap:wrap;gap:24px;display:flex}.matrix-editor{flex-direction:column;flex:220px;gap:8px;display:flex}.graph-functions{flex-direction:column;gap:8px;display:flex}.graph-function-row{align-items:center;gap:8px;display:flex}.graph-function-row input[type=text]{font:inherit;border:1px solid var(--key-op-bg);background:var(--surface-alt);color:var(--text);border-radius:8px;flex:1;padding:8px 10px;font-size:15px}.graph-color-swatch{border-radius:50%;flex:none;width:14px;height:14px}.graph-function-row button{background:var(--key-op-bg);color:var(--key-op-text);cursor:pointer;border:none;border-radius:8px;flex:none;width:28px;height:28px}#graphCanvas{aspect-ratio:3/2;background:var(--surface-alt);touch-action:none;border-radius:10px;width:100%;height:auto}.expression{text-align:right;min-height:20px;color:var(--text-muted);white-space:nowrap;padding:0 4px;font-size:14px;overflow-x:auto}.display-row{display:flex}#display{width:100%;color:var(--text);text-align:right;background:0 0;border:none;padding:8px 4px;font-family:inherit;font-size:34px}#display:focus{outline:none}.error-message{min-height:18px;color:var(--error);text-align:right;margin:0 0 4px;padding:0 4px;font-size:12px}.keypad{grid-template-columns:repeat(5,1fr);gap:8px;display:grid}.key{background:var(--key-bg);color:var(--key-text);cursor:pointer;box-shadow:0 1px 2px var(--shadow);border:none;border-radius:12px;justify-content:center;align-items:center;padding:14px 4px;font-size:16px;font-weight:600;display:flex}.key:hover{filter:brightness(.97)}:root[data-theme=dark] .key:hover{filter:brightness(1.15)}.key:active{transform:translateY(1px)}.key:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.icon-button:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.pill:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.key-num{color:var(--text);background:var(--surface-alt);font-size:20px}.key-op{background:var(--key-op-bg);color:var(--key-op-text)}.key-mem{background:var(--key-mem-bg);color:var(--key-op-text);font-size:13px}.key-fn{background:var(--surface-alt);font-size:13px}.key-clear{background:var(--key-mem-bg);color:var(--key-op-text);font-size:13px}.key-back{background:var(--key-op-bg)}.key-equals{background:var(--accent);color:var(--accent-contrast);font-size:22px}.overlay{background:var(--overlay-bg);color:var(--overlay-text);z-index:1000;flex-direction:column;padding:20px;display:flex;position:fixed;top:0;bottom:0;left:0;right:0}.overlay-header{align-items:center;gap:10px;margin-bottom:12px;display:flex}.overlay-header h2{flex:1;margin:0;font-size:20px}.overlay-content{background:var(--overlay-hover);border-radius:12px;flex:1;padding:12px;overflow-y:auto}.history-entry{border:none;border-bottom:1px solid var(--overlay-border);width:100%;color:inherit;font:inherit;text-align:left;cursor:pointer;background:0 0;border-radius:6px;padding:10px 6px;display:block}.history-entry:hover{background:var(--overlay-hover)}.history-entry:focus-visible{outline-offset:-2px;outline:2px solid #fff}.history-expr{color:var(--overlay-text-muted);font-size:13px}.history-result{font-size:20px;font-weight:600}.history-empty{color:var(--overlay-text-faint);text-align:center;padding:40px 0}.app-footer{text-align:center;padding:4px}.app-footer a{color:var(--text-muted);font-size:12px;text-decoration:none}.app-footer a:hover{text-decoration:underline}@media (max-width:360px){#display{font-size:28px}.key{padding:12px 2px;font-size:14px}}