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18px);touch-action:none;position:absolute;top:0;bottom:0;left:0}.calc-body-wrap{position:absolute;inset:0}.calc-body{background:var(--bg);color:var(--label);display:block;position:absolute;inset:0;overflow:hidden}.calc-body[hidden],.calc-body-wrap[hidden]{display:none}.ext-btn{background:var(--ext-bg);width:34px;height:34px;color:var(--ext-ink);box-shadow:var(--ext-shadow);cursor:pointer;transition:transform .16s var(--ease-spring), filter .12s;border:0;border-radius:50%;flex:none;place-items:center;padding:0;display:grid;position:relative}.ext-btn:after{content:"";position:absolute;inset:-5px}.ext-btn:active{filter:var(--press);transition-duration:60ms;transform:translateY(1px)scale(.94)}.ext-btn:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.ext-back svg{margin-left:-2px}.ext-btn-lg{width:44px;height:44px}.ext-btn-lg:after{inset:0}.calc-top{flex:none;justify-content:space-between;align-items:center;gap:8px;height:34px;margin:-4px -4px -2px;display:flex}.wordmark{color:var(--label-2);white-space:nowrap;margin-right:-.2em;font-size:12px}.status-steps{align-items:center;gap:4px;display:inline-flex}.math-input-static{white-space:nowrap;color:var(--label);align-items:center;font-size:30px;display:flex;overflow:hidden}.static-caret{background:var(--accent);border-radius:1px;width:2px;height:1.05em;margin-left:2px;display:inline-block}.app.text-large .math-input math-field,.app.text-large .math-input-static{font-size:36px}.app.text-large .screen-prev .math-view,.app.text-large .relation{font-size:1.15em}.app.text-large .sheet-body{zoom:1.15}.sheet-drag{touch-action:none;cursor:grab}.sheet-tall{height:92dvh;max-height:92dvh}.set-group h4{color:var(--label-2);margin:14px 0 8px;font-size:13px;font-weight:600}.set-note-top{margin-top:0}.set-row-plain{min-height:0;margin-bottom:6px}.set-action:disabled{opacity:.45;cursor:default}.set-action 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h3{margin:18px 0 6px;font-size:17px;font-weight:600}.legal p{margin:8px 0}.legal ul{margin:6px 0;padding-left:20px}.legal li{margin:6px 0}.legal a{color:var(--accent)}.legal-eff{color:var(--label-2)}.lic-list{background:var(--card);border-radius:14px;margin:12px 0 0;padding:0;list-style:none;overflow:hidden}.lic-list li+li{border-top:.5px solid var(--separator)}.lic-head{text-align:left;cursor:pointer;background:0 0;border:0;flex-wrap:wrap;align-items:baseline;gap:2px 10px;width:100%;min-height:52px;padding:10px 14px;display:flex}.lic-name{font-size:16px;font-weight:600}.lic-meta{color:var(--label-2);font-size:13px}.lic-note{width:100%;color:var(--label-2);font-size:13px}.lic-body{padding:0 14px 12px}.lic-body a{word-break:break-all;font-size:13px}.lic-body pre{white-space:pre-wrap;font-family:var(--font-mono);color:var(--label-2);margin:8px 0 0;font-size:11.5px;line-height:1.45}.root-note{color:var(--label-2);text-align:right;margin:4px 0 0;font-size:12px}.tool{max-width:760px;padding:calc(env(safe-area-inset-top) + 2px) calc(env(safe-area-inset-right) + 12px) calc(env(safe-area-inset-bottom) + 10px) calc(env(safe-area-inset-left) + 12px);background:var(--bg);color:var(--label);-webkit-user-select:none;user-select:none;flex-direction:column;gap:8px;margin:0 auto;display:flex;position:absolute;inset:0}.tool-head{flex:none;align-items:center;gap:8px;min-height:46px;display:flex}.tool-title{text-align:center;flex:1;margin:0;font-size:17px;font-weight:600}.tool-head-right{align-items:center;gap:8px;display:flex}.tool-head .status-chip{letter-spacing:.05em;font-size:11px;font-weight:700}.graph-wrap{border:1px solid 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14px;display:flex}.graph-points{scrollbar-width:none;touch-action:pan-x;flex:none;gap:6px;display:flex;overflow-x:auto}.graph-pt{background:var(--chip-bg);font-variant-numeric:tabular-nums;cursor:pointer;border:0;border-radius:16px;flex:none;align-items:center;gap:6px;min-height:32px;padding:0 10px;font-size:13px;display:inline-flex}.graph-pt i{border-radius:4px;width:8px;height:8px}.graph-pt-on{box-shadow:inset 0 0 0 2px var(--accent)}.fn-list{background:var(--screen-bg);border:1px solid var(--screen-border);touch-action:pan-y;border-radius:14px;flex:none;max-height:34dvh;margin:0;padding:0;list-style:none;overflow-y:auto}.fn-row{align-items:center;gap:2px;min-height:46px;padding:0 8px 0 4px;display:flex}.fn-row+.fn-row{border-top:.5px solid var(--separator)}.fn-row-on{background:var(--accent-tint)}.fn-eye{width:40px;height:40px;color:var(--label-3);cursor:pointer;background:0 0;border:0;flex:none;place-items:center;display:grid}.fn-name{color:var(--label-2);flex:none;font-size:15px}.fn-view{text-align:left;scrollbar-width:none;cursor:text;background:0 0;border:0;flex:1;align-items:center;gap:8px;min-width:0;min-height:44px;padding:0 4px;font-size:19px;display:flex;overflow-x:auto}.fn-empty{color:var(--label-3);font-size:15px}.fn-err{color:var(--danger);white-space:nowrap;font-size:12px}.fn-edit{flex:1;min-width:0}.fn-edit .math-input math-field{font-size:21px}.tool-editing .graph-wrap{min-height:120px}.mini-keypad{flex:none;grid-template-columns:repeat(6,1fr);grid-auto-rows:clamp(36px,5.1dvh,48px);gap:6px;display:grid}.mini-keypad .key{border-radius:10px}.mini-keypad .key-digit,.mini-keypad .key-op{font-size:22px}.mini-keypad .key-fn .math-view{font-size:16px}.mini-keypad .k-done{font-size:16px;font-weight:600}.conv-cats{scrollbar-width:none;touch-action:pan-x;flex:none;gap:6px;padding:2px 0;display:flex;overflow-x:auto}.conv-cats::-webkit-scrollbar{display:none}.conv-body{flex-direction:column;flex:auto;justify-content:center;min-height:0;display:flex}.conv-card{background:var(--screen-bg);border:1px solid var(--screen-border);border-radius:20px;flex-direction:column;gap:4px;min-width:0;padding:10px 14px 12px;display:flex;position:relative}.conv-unit{background:var(--chip-bg);min-height:34px;color:var(--accent);cursor:pointer;border:0;border-radius:17px;align-self:flex-start;align-items:baseline;gap:8px;padding:0 12px;display:inline-flex}.conv-sym{font-size:16px;font-weight:700}.conv-uname{color:var(--label-2);font-size:13px}.conv-value{text-align:right;white-space:nowrap;scrollbar-width:none;font-variant-numeric:tabular-nums;min-height:52px;font-size:clamp(30px,5dvh,44px);font-weight:300;overflow-x:auto}.conv-placeholder{color:var(--label-3)}.conv-ans{font-size:24px}.conv-swap{z-index:1;border:4px solid var(--bg);background:var(--accent);width:46px;height:46px;color:var(--on-accent);cursor:pointer;border-radius:23px;align-self:center;place-items:center;margin:-14px 0;display:grid}.conv-result{flex-direction:column;align-items:flex-end;gap:2px;min-height:52px;display:flex}.conv-exact{scrollbar-width:none;align-items:center;gap:8px;max-width:100%;font-size:28px;display:flex;overflow-x:auto}.conv-dec{color:var(--label-2);max-width:100%;font-size:17px;overflow-x:auto}.conv-error{color:var(--danger);font-size:15px;font-weight:600}.conv-copy{min-height:32px;color:var(--accent);cursor:pointer;background:0 0;border:0;border-radius:16px;align-items:center;gap:4px;padding:0 10px;font-size:13px;display:inline-flex;position:absolute;top:10px;right:10px}.conv-pad{flex:none;grid-template-columns:repeat(4,1fr);grid-auto-rows:clamp(46px,6.2dvh,60px);gap:8px;display:grid}.conv-pad .key-fn{font-size:18px}.conv-pad .key:disabled{opacity:.4}.conv-pick-sym{color:var(--accent);font-weight:700}.conv-check{color:var(--accent);margin-left:auto}.graph-main,.conv-main{flex-direction:column;flex:auto;gap:8px;min-height:0;display:flex}.graph-side,.conv-left{flex-direction:column;gap:8px;min-height:0;display:flex}.graph-side{flex:none}.conv-left{flex:auto;min-width:0}@media (aspect-ratio>=5/4) and (width>=640px){.tool{max-width:1280px}.graph-main,.conv-main{flex-direction:row;gap:16px}.graph-side{scrollbar-width:none;width:clamp(270px,32vw,400px);overflow-y:auto}.graph-side .fn-list{max-height:none}.conv-pad{flex:none;grid-auto-rows:clamp(42px,9dvh,76px);align-self:center;width:clamp(280px,36vw,440px)}}.status-toggle{position:relative}.status-toggle:after{content:"";position:absolute;inset:-9px -5px}