:root{--bg-color:#000;--display-color:#fff;--key-number-bg:#fff;--key-number-bg-active:#d4d4d4;--key-number-text:#000;--key-fn-bg:#2c2c2e;--key-fn-bg-active:#3a3a3c;--key-fn-text:#fff;--key-orange:#ff9500;--key-orange-active:#ffb340;--key-orange-text:#fff;--text-white:#fff;--text-grey:#8e8e93;--text-orange:#ff9500;--border-grey:#1c1c1e;--font-sans:-apple-system, BlinkMacSystemFont, "SF Pro Text", "SF Pro Display", "Helvetica Neue", Helvetica, Arial, sans-serif;--font-mono:"SF Mono", "SF Pro Icons", Menlo, Monaco, Consolas, monospace}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent;-webkit-user-select:none;user-select:none;margin:0;padding:0}body{color:var(--text-white);font-family:var(--font-sans);background-color:#000;justify-content:center;align-items:center;height:100svh;display:flex;overflow:hidden}#root{background-color:var(--bg-color);width:100%;max-width:480px;height:100%;padding-top:env(safe-area-inset-top,20px);border-radius:0;flex-direction:column;display:flex;position:relative;overflow:hidden;box-shadow:0 0 40px #000c}@media (width>=481px){#root{border:8px solid #2c2c2e;border-radius:40px;height:90svh}}.app-container{flex-direction:column;width:100%;height:100%;display:flex;overflow:hidden}.history-section{scroll-behavior:smooth;flex-direction:column;flex:1;justify-content:flex-end;padding:16px 20px 8px;display:flex;overflow-y:auto}.date-divider{color:var(--text-orange);text-align:right;text-transform:uppercase;letter-spacing:.5px;border-bottom:1px solid #ff950026;margin:24px 0 12px;padding-bottom:6px;font-size:16px;font-weight:700}.history-item{cursor:pointer;border-radius:8px;width:100%;margin-bottom:14px;padding:4px 6px;transition:background-color .2s;animation:.2s ease-out fadeIn;display:flex}.history-item:active{background-color:#ffffff0d}.history-row-content{justify-content:space-between;align-items:center;width:100%;display:flex}.history-note-side{align-items:center;display:flex}.history-note-tag{color:var(--text-orange);white-space:nowrap;text-overflow:ellipsis;background-color:#ff950026;border-radius:4px;max-width:110px;padding:2px 6px;font-size:11px;font-weight:500;overflow:hidden}.history-math-side{flex:1;justify-content:flex-end;align-items:baseline;display:flex}.history-expression-part{color:var(--text-grey);font-size:26px;font-weight:600;font-family:var(--font-sans);text-align:right;word-break:break-all}.history-result-part{color:var(--text-white);font-size:34px;font-weight:700;font-family:var(--font-sans);margin-left:4px}.daily-sum-card{color:var(--text-grey);background-color:#2c2c2e66;border:1px dashed #ffffff1a;border-radius:10px;justify-content:space-between;align-items:center;margin:8px 0;padding:8px 12px;font-size:13px;display:flex}.daily-sum-value{color:var(--text-orange);font-weight:700;font-family:var(--font-mono)}.display-section{flex-direction:column;justify-content:flex-end;align-items:flex-end;min-height:70px;padding:0 24px 4px;display:flex}.current-expression{color:var(--text-grey);font-size:22px;font-family:var(--font-mono);text-align:right;word-break:break-all;width:100%;min-height:24px;font-weight:500}.current-value{color:var(--text-white);text-align:right;white-space:nowrap;width:100%;font-size:72px;font-weight:500;line-height:1.1;font-family:var(--font-sans);scrollbar-width:none;overflow-x:auto}.current-value::-webkit-scrollbar{display:none}.keyboard-section{padding:8px 18px env(safe-area-inset-bottom,12px) 18px;grid-gap:10px;border-top:1px solid var(--border-grey);--key-width:calc((100cqi - 36px - 40px) / 5);background-color:#000;grid-template-columns:repeat(5,1fr);display:grid;container-type:inline-size}.key{aspect-ratio:1;cursor:pointer;border:none;border-radius:50%;outline:none;justify-content:center;align-items:center;transition:transform 50ms,background-color .1s;display:flex}.key:active{transform:scale(.9)}.key-number{background-color:var(--key-number-bg);color:var(--key-number-text);font-size:calc(var(--key-width) * .8);font-weight:600}.key-number:active{background-color:var(--key-number-bg-active)}.key-fn{background-color:var(--key-fn-bg);color:var(--key-fn-text);font-size:calc(var(--key-width) * .65);font-weight:600}.key-fn:active{background-color:var(--key-fn-bg-active)}.key-ac{font-size:calc(var(--key-width) * .48)}.key-sign{font-size:calc(var(--key-width) * .42)}.key-pct{font-size:calc(var(--key-width) * .65)}.key-back{font-size:calc(var(--key-width) * .68)}.key-action{color:var(--text-orange);font-size:calc(var(--key-width) * .65);background-color:#ff950026}.key-action:active{background-color:#ff95004d}.key-operator{background-color:var(--key-orange);color:var(--key-orange-text);font-size:calc(var(--key-width) * .8);font-weight:600}.key-operator:active{background-color:var(--key-orange-active)}.key-operator.active-operator{background-color:var(--text-white);color:var(--key-orange)}.key-double-width{aspect-ratio:auto;padding-left:calc(var(--key-width) * .35);border-radius:45px;grid-column:span 2;justify-content:flex-start}.key-double-height{aspect-ratio:auto;background-color:var(--key-orange);height:100%;color:var(--key-orange-text);font-size:calc(var(--key-width) * .85);border-radius:45px;grid-row:span 2;font-weight:600}.key-double-height:active{background-color:var(--key-orange-active)}.key-icon{width:calc(var(--key-width) * .68);height:calc(var(--key-width) * .68);fill:currentColor}.modal-overlay{-webkit-backdrop-filter:blur(10px);z-index:100;background-color:#0009;justify-content:center;align-items:center;width:100%;height:100%;animation:.2s ease-out fadeIn;display:flex;position:absolute;top:0;left:0}.modal-content{background-color:#1c1c1e;border:1px solid #2c2c2e;border-radius:20px;flex-direction:column;gap:16px;width:85%;max-width:340px;padding:20px;animation:.25s cubic-bezier(.1,.8,.3,1) slideUp;display:flex;box-shadow:0 10px 30px #00000080}.modal-header{text-align:center;color:var(--text-white);font-size:17px;font-weight:600}.modal-expression-preview{font-family:var(--font-mono);color:var(--text-grey);text-align:center;word-break:break-all;background-color:#2c2c2e;border-radius:8px;padding:8px;font-size:13px}.modal-input{color:var(--text-white);font-family:var(--font-sans);background-color:#2c2c2e;border:1px solid #3a3a3c;border-radius:10px;outline:none;width:100%;padding:12px;font-size:15px}.modal-input:focus{border-color:var(--key-orange)}.modal-buttons{justify-content:flex-end;gap:12px;display:flex}.modal-btn{cursor:pointer;border:none;border-radius:10px;outline:none;padding:10px 18px;font-size:14px;font-weight:600;transition:opacity .1s}.modal-btn:active{opacity:.7}.modal-btn-cancel{color:var(--text-white);background-color:#2c2c2e}.modal-btn-save{background-color:var(--key-orange);color:var(--text-white)}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes slideUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.history-section::-webkit-scrollbar{width:4px}.history-section::-webkit-scrollbar-track{background:0 0}.history-section::-webkit-scrollbar-thumb{background:#ffffff26;border-radius:2px}.history-section::-webkit-scrollbar-thumb:hover{background:#ffffff4d}