html.addsub-enhanced .tool-mount>.prose{display:none}.addsub-tool{position:relative;isolation:isolate;display:flex;flex-direction:column;gap:18px;padding:clamp(20px,4vw,30px);border:1px solid var(--border);border-radius:var(--radius-content);background:var(--surface);box-shadow:var(--shadow)}.addsub-tool>*{position:relative;z-index:var(--z-content)}.addsub-tool:has(.dp-pop,.sel-list,.share-menu){z-index:var(--z-popover-host)}.addsub-tool:before{content:"";position:absolute;inset-block-start:0;inset-inline:0;z-index:2;height:3px;border-radius:var(--radius-content) var(--radius-content) 0 0;background:linear-gradient(90deg,transparent,var(--accent) 22%,var(--accent) 78%,transparent)}.addsub-tool:after{content:"";position:absolute;inset-block-end:0;inset-inline:0;margin-inline:auto;z-index:0;width:min(96%,760px);aspect-ratio:1040 / 592;background-image:url(/add-subtract-art.png);background-repeat:no-repeat;background-position:50% 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var(--border);border-radius:12px;background:var(--surface-2);font:inherit;font-size:16px;font-weight:550;font-variant-numeric:tabular-nums;display:flex;align-items:center;gap:8px;cursor:pointer;text-align:start;color:var(--text);transition:border-color .18s ease,background-color .18s ease,box-shadow .18s ease}.addsub-unit .sel-trigger:hover{border-color:var(--border-strong)}.addsub-unit .sel-trigger[aria-expanded=true],.addsub-unit .sel-trigger:focus-visible{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--ring)}.addsub-advanced{display:flex;flex-direction:column;gap:12px;animation:addsub-advanced-in .22s cubic-bezier(.22,1,.36,1)}.addsub-advanced-legend{margin:0;font-size:12px;font-weight:700;letter-spacing:.05em;text-transform:uppercase;color:var(--accent-ink)}:root[dir=rtl] .addsub-advanced-legend{letter-spacing:0;text-transform:none;font-size:13px;font-weight:650}.addsub-advanced-hint{margin:0;font-size:12.5px;line-height:1.45;color:var(--text-3)}@keyframes addsub-advanced-in{0%{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:translateY(0)}}.addsub-more-btn{display:inline-flex;align-items:center;gap:7px;align-self:flex-start;height:38px;padding:0 12px;border:1px solid var(--border);border-radius:11px;background:var(--surface);color:var(--text-2);font:inherit;font-size:13.5px;font-weight:600;cursor:pointer;transition:border-color .18s ease,color .18s ease,background-color .18s ease}.addsub-more-btn:hover{color:var(--accent-ink);border-color:var(--border-strong);background:var(--surface-2)}.addsub-more-btn:focus-visible{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--ring)}.addsub-more-btn.on{color:var(--accent-ink);border-color:var(--accent);background:var(--accent-soft)}.addsub-more-caret{display:inline-flex;align-items:center;justify-content:center;line-height:0;transition:transform .2s ease}.addsub-more-caret 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70%,transparent)}.addsub-date-tag{font-size:10.5px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--accent-ink)}:root[dir=rtl] .addsub-date-tag{letter-spacing:0;text-transform:none;font-size:12px;font-weight:650}.addsub-date-g{font-size:14px;font-weight:600;color:var(--text);line-height:1.35}.addsub-date-j{font-size:13px;font-weight:500;color:var(--text-2);line-height:1.35}@keyframes addsub-result-in{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}.addsub-actions{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:2px}.addsub-share{position:relative;display:inline-flex;align-self:flex-start}.addsub-tool .ghost-btn{display:inline-flex;align-items:center;gap:6px;width:auto;height:44px;padding:0 16px;border:1px solid var(--border);border-radius:11px;background:var(--surface);color:var(--text-2);font:inherit;font-size:14px;font-weight:600;cursor:pointer;transition:border-color .18s ease,color .18s ease,background-color 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ease}.share-menu-item{display:flex;align-items:center;gap:12px;padding:10px 12px;border:1px solid transparent;border-radius:10px;background:transparent;color:var(--text);font:inherit;font-size:14px;font-weight:550;text-align:start;text-decoration:none;cursor:pointer;transition:background-color .14s ease,color .14s ease}.share-menu-item:hover,.share-menu-item:focus-visible{background:var(--surface-2);outline:none}.share-menu-item:focus-visible{border-color:var(--accent);box-shadow:0 0 0 2px var(--ring)}.share-menu-glyph{display:grid;place-items:center;width:22px;height:22px;flex-shrink:0;color:var(--text-2);transition:color .14s ease}.share-menu-glyph svg{width:20px;height:20px}.share-menu-item:hover .share-menu-glyph,.share-menu-item:focus-visible .share-menu-glyph{color:var(--accent)}.share-menu-label{flex:1}.share-menu-item.done .share-menu-glyph{color:var(--success)}@keyframes addsub-pop-in{0%{opacity:0;transform:translateY(-4px) scale(.98)}to{opacity:1;transform:translateY(0) scale(1)}}:root[dir=rtl] .addsub-tool,:root[dir=rtl] .share-menu{font-family:var(--font-farsi)}@media(max-width:640px){.addsub-tool:after{width:min(100%,460px);opacity:.13}[data-theme=dark] .addsub-tool:after{opacity:.22}}@media(max-width:460px){.addsub-dates-grid{grid-template-columns:1fr;gap:8px}.addsub-dates-connector svg{transform:rotate(90deg)}:root[dir=rtl] .addsub-dates-connector svg{transform:scaleX(-1) rotate(-90deg)}}@media(prefers-reduced-motion:reduce){.addsub-result-stack,.addsub-advanced,.addsub-more-caret,.share-menu,.addsub-tool .ghost-btn.done,.addsub-tool .ghost-btn.busy svg{animation:none;transition:none}.addsub-tool .ghost-btn:active:not(:disabled),.addsub-step-btn:active,.addsub-tool .cal-trigger:active:not(:disabled){transform:none}}.cal-chip{position:relative;flex:1;min-width:0}.cal-chip-trigger{display:inline-flex;align-items:center;gap:6px;max-width:100%;padding:5px 10px;border:1px solid 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var(--ring);color:var(--text)}.cal-chip-label{color:var(--text-3);font-weight:500}.cal-chip-label:after{content:"";display:inline-block;inline-size:1px;block-size:.85em;margin-inline-start:7px;vertical-align:-.12em;background:var(--border-strong)}.cal-chip-value{font-weight:650;color:var(--accent-ink)}.cal-chip-trigger svg.cal-chip-caret,.cal-chip-trigger>svg:last-child{width:12px;height:12px;flex:none;opacity:.55;transition:transform .2s cubic-bezier(.2,.7,.2,1),opacity .18s ease}.cal-chip-trigger.on>svg:last-child{transform:rotate(180deg);opacity:.9}.cal-chip-list{min-width:232px;padding:5px;box-shadow:0 0 0 1px color-mix(in srgb,var(--border) 70%,transparent),0 12px 30px -12px #0f171738;transform-origin:top center;animation:cal-chip-pop .2s cubic-bezier(.16,1,.3,1)}[dir=rtl] .cal-chip-list{transform-origin:top center}@keyframes cal-chip-pop{0%{opacity:0;transform:translateY(-4px) scale(.985)}to{opacity:1;transform:translateY(0) scale(1)}}.cal-chip-opt{align-items:flex-start;gap:10px;padding:9px 11px;border-radius:10px}.cal-chip-list .sel-opt-mark{margin-block-start:1px}.cal-chip-list .sel-opt-mark svg{width:14px;height:14px;stroke-width:1.75}.cal-chip-opt-text{display:flex;flex-direction:column;gap:3px;min-width:0}.cal-chip-opt-name{font-weight:580;color:var(--text)}.cal-chip-opt-hint{display:inline-flex;align-items:baseline;gap:6px;font-size:12px;line-height:1.3;color:var(--text-3)}.cal-chip-opt-hint-fa{font-family:var(--font-farsi);position:relative;padding-inline-start:8px}.cal-chip-opt-hint-fa:before{content:"";position:absolute;inset-inline-start:0;inset-block:.15em .1em;inline-size:1px;background:color-mix(in srgb,var(--text-3) 55%,transparent)}.cal-chip-opt.selected{position:relative;background:color-mix(in srgb,var(--accent-soft) 55%,transparent)}.cal-chip-opt.selected:before{content:"";position:absolute;inset-inline-start:0;inset-block:8px;inline-size:2px;border-radius:0 2px 2px 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