button{font-family:inherit;color:inherit;cursor:pointer;touch-action:manipulation}button:disabled{opacity:.3;cursor:default}button:focus-visible{outline:2px solid #555;outline-offset:4px}[hidden]{display:none!important}.token{font-weight:400;letter-spacing:normal;background:transparent;border:0}.num{border-bottom:1.5px solid #b9b9b3;min-height:1.2em}.num.empty{color:#aaa;font-size:inherit}.formula{gap:0;max-width:100%;flex-wrap:wrap;justify-content:center;row-gap:20px}.expression{display:flex;align-items:baseline;max-width:100%;font-size:68px}.expression .op{margin:0 20px}.result-group{display:flex;align-items:baseline;margin-left:28px;font-size:68px}.equals{font-size:48px;margin-right:20px}.num{font-size:inherit;max-width:100%;overflow-wrap:anywhere}.answer-toggle{min-height:44px;margin-top:20px}.tools button{width:36px}.seg{justify-self:center}.carry,.answer{background:transparent;color:var(--ink);padding:0}.carry{min-height:28px}.answer{border:0;border-bottom:1.5px solid #b9b9b3}.carry.selected,.answer.selected,.num.selected{background:var(--soft);border-bottom-color:var(--ink)}.calc-actions{display:flex;align-items:center;gap:18px;margin-top:22px}.quiet{border:0;background:transparent;color:var(--muted);font-size:14px;min-height:44px;padding:8px}.keypad{z-index:5}.keypad button{min-height:48px}.progress{margin-bottom:26px}.calc-grid{--columns:3;grid-template-columns:40px repeat(var(--columns),56px)}.rule{grid-column:1/-1}.operator-menu{display:flex;gap:12px;justify-content:center;margin-top:24px}.operator-menu button{border:1px solid var(--line);background:white;border-radius:12px;width:56px;height:52px;font-size:30px}dialog{color:var(--ink);background:var(--bg);border:1px solid var(--line);border-radius:20px;padding:28px;width:min(440px,calc(100% - 32px))}dialog::backdrop{background:#0003}dialog h2{font-size:20px;margin:0 0 24px}fieldset{border:0;padding:0;margin:20px 0}legend{font-size:14px;color:var(--muted);margin-bottom:10px}.choices{display:flex;flex-wrap:wrap;gap:8px}label{padding:10px 8px;font-size:15px}input{accent-color:#181818}.dialog-footer{display:flex;justify-content:flex-end;gap:12px}.primary{background:var(--ink);color:white;border:0;border-radius:10px;padding:12px 18px;font-size:14px}.editing main{padding-bottom:310px}.editing main{align-items:flex-start;padding-top:38px}.carry{position:relative}.carry:before{content:'';position:absolute;inset:-7px 0} @media(max-width:560px){.tools button:first-child{display:block}.tools{gap:0}.tools button{width:30px;font-size:18px}header{grid-template-columns:60px 1fr 60px}.expression,.result-group{font-size:54px}.expression .op{margin:0 15px}.result-group{margin-left:18px}.equals{font-size:40px;margin-right:15px}.calc-grid{grid-template-columns:34px repeat(var(--columns),50px)}.keypad button{min-height:44px}.keypad{gap:6px;padding:10px}.editing main{padding-top:24px;padding-bottom:280px}.nav{margin-top:20px}.calc-actions{margin-top:8px}.progress{margin-bottom:20px}}@media(max-width:360px){.expression,.result-group{font-size:46px}.expression .op{margin:0 10px}.calc-grid{grid-template-columns:30px repeat(var(--columns),48px)}}