.screen{background:var(--screen-bg);border-radius:18px;flex-direction:column;justify-content:flex-end;align-items:flex-end;gap:8px;min-height:120px;margin-bottom:20px;padding:18px 22px;display:flex}.screen-expression{color:var(--text-muted);letter-spacing:.3px;word-break:break-all;font-family:-apple-system,BlinkMacSystemFont,SF Pro Display,sans-serif;font-size:1.1rem;font-weight:400}.screen-result{color:var(--text-primary);letter-spacing:-.5px;word-break:break-all;font-family:-apple-system,BlinkMacSystemFont,SF Pro Display,sans-serif;font-size:3.25rem;font-weight:300;line-height:1}.grid{grid-auto-rows:70px}.grid button{width:100%;min-width:75px;height:100%;color:var(--text-primary);cursor:pointer;border:none;border-radius:15px;font-size:1.5rem;font-weight:400;transition:transform .1s,filter .15s,background-color .15s}.grid button:hover{filter:brightness(.97)}.grid button:active{transform:scale(.94)}.operator{background-color:var(--accent-operator);color:#fff;font-weight:500}.operator:hover{background-color:var(--accent-operator-hover)}.number{background-color:var(--number-bg);color:var(--text-primary)}.number:hover{background-color:var(--number-hover)}.enter{background-color:var(--accent-enter);color:#fff;border-radius:24px;font-size:1.2rem;font-weight:500}.enter:hover{background-color:var(--accent-enter-hover)}.CE{background-color:var(--accent-clear);color:var(--accent-clear-text);font-size:1.2rem;font-weight:500}.CE:hover{background-color:var(--accent-clear-hover)}.backspace{background-color:var(--accent-backspace);color:var(--text-primary);font-size:1.2rem;font-weight:500}.backspace:hover{background-color:var(--accent-backspace-hover)}@layer theme{:root,:host{--font-sans:ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";--font-mono:ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;--spacing:.25rem;--default-font-family:var(--font-sans);--default-mono-font-family:var(--font-mono)}}@layer base{*,:after,:before,::backdrop{box-sizing:border-box;border:0 solid;margin:0;padding:0}::file-selector-button{box-sizing:border-box;border:0 solid;margin:0;padding:0}html,:host{-webkit-text-size-adjust:100%;tab-size:4;line-height:1.5;font-family:var(--default-font-family,ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji");font-feature-settings:var(--default-font-feature-settings,normal);font-variation-settings:var(--default-font-variation-settings,normal);-webkit-tap-highlight-color:transparent}hr{height:0;color:inherit;border-top-width:1px}abbr:where([title]){-webkit-text-decoration:underline dotted;text-decoration:underline dotted}h1,h2,h3,h4,h5,h6{font-size:inherit;font-weight:inherit}a{color:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;text-decoration:inherit}b,strong{font-weight:bolder}code,kbd,samp,pre{font-family:var(--default-mono-font-family,ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace);font-feature-settings:var(--default-mono-font-feature-settings,normal);font-variation-settings:var(--default-mono-font-variation-settings,normal);font-size:1em}small{font-size:80%}sub,sup{vertical-align:baseline;font-size:75%;line-height:0;position:relative}sub{bottom:-.25em}sup{top:-.5em}table{text-indent:0;border-color:inherit;border-collapse:collapse}:-moz-focusring{outline:auto}progress{vertical-align:baseline}summary{display:list-item}ol,ul,menu{list-style:none}img,svg,video,canvas,audio,iframe,embed,object{vertical-align:middle;display:block}img,video{max-width:100%;height:auto}button,input,select,optgroup,textarea{font:inherit;font-feature-settings:inherit;font-variation-settings:inherit;letter-spacing:inherit;color:inherit;opacity:1;background-color:#0000;border-radius:0}::file-selector-button{font:inherit;font-feature-settings:inherit;font-variation-settings:inherit;letter-spacing:inherit;color:inherit;opacity:1;background-color:#0000;border-radius:0}:where(select:is([multiple],[size])) optgroup{font-weight:bolder}:where(select:is([multiple],[size])) optgroup option{padding-inline-start:20px}::file-selector-button{margin-inline-end:4px}::placeholder{opacity:1}@supports (not ((-webkit-appearance:-apple-pay-button))) or (contain-intrinsic-size:1px){::placeholder{color:currentColor}@supports (color:color-mix(in lab, red, red)){::placeholder{color:color-mix(in oklab, currentcolor 50%, transparent)}}}textarea{resize:vertical}::-webkit-search-decoration{-webkit-appearance:none}::-webkit-date-and-time-value{min-height:1lh;text-align:inherit}::-webkit-datetime-edit{display:inline-flex}::-webkit-datetime-edit-fields-wrapper{padding:0}::-webkit-datetime-edit{padding-block:0}::-webkit-datetime-edit-year-field{padding-block:0}::-webkit-datetime-edit-month-field{padding-block:0}::-webkit-datetime-edit-day-field{padding-block:0}::-webkit-datetime-edit-hour-field{padding-block:0}::-webkit-datetime-edit-minute-field{padding-block:0}::-webkit-datetime-edit-second-field{padding-block:0}::-webkit-datetime-edit-millisecond-field{padding-block:0}::-webkit-datetime-edit-meridiem-field{padding-block:0}::-webkit-calendar-picker-indicator{line-height:1}:-moz-ui-invalid{box-shadow:none}button,input:where([type=button],[type=reset],[type=submit]){appearance:button}::file-selector-button{appearance:button}::-webkit-inner-spin-button{height:auto}::-webkit-outer-spin-button{height:auto}[hidden]:where(:not([hidden=until-found])){display:none!important}}@layer components;@layer utilities{.col-span-2{grid-column:span 2/span 2}.row-span-2{grid-row:span 2/span 2}.container{width:100%}@media (width>=40rem){.container{max-width:40rem}}@media (width>=48rem){.container{max-width:48rem}}@media (width>=64rem){.container{max-width:64rem}}@media (width>=80rem){.container{max-width:80rem}}@media (width>=96rem){.container{max-width:96rem}}.grid{display:grid}.grid-cols-4{grid-template-columns:repeat(4,minmax(0,1fr))}.gap-4{gap:calc(var(--spacing) * 4)}}:root{--bg-page:#f5f5f7;--card-bg:#fff;--card-border:#0000000f;--screen-bg:#fff;--text-primary:#1d1d1f;--text-muted:#86868b;--accent-operator:#ff9500;--accent-operator-hover:#ffab33;--accent-enter:#007aff;--accent-enter-hover:#3395ff;--accent-clear:#ffe5e0;--accent-clear-hover:#ffd0c7;--accent-clear-text:#ff3b30;--accent-backspace:#f2f2f7;--accent-backspace-hover:#e5e5ea;--number-bg:#f2f2f7;--number-hover:#e5e5ea}*{box-sizing:border-box;margin:0;padding:0;font-family:-apple-system,BlinkMacSystemFont,SF Pro Display,Segoe UI,Helvetica Neue,Arial,sans-serif}body{background:var(--bg-page);justify-content:center;align-items:center;min-height:100vh;padding:20px;display:flex}.container{background:var(--card-bg);border:1px solid var(--card-border);border-radius:28px;width:100%;max-width:420px;padding:32px;box-shadow:0 20px 45px #00000014}.app-header{align-items:center;gap:8px;margin-bottom:18px;display:flex}.app-icon{width:20px;height:20px;color:var(--accent-enter)}.app-title{color:var(--text-muted);letter-spacing:.2px;font-size:.95rem;font-weight:600}img{height:20px;display:inline}p{padding:5px;display:inline}