:root{--bg:var(--p-bg);--surface:var(--p-surface);--ink:var(--p-ink);--muted:var(--p-muted);--action:var(--p-action);--action-ink:var(--p-action-ink);--line:color-mix(in srgb,var(--ink) 15%,transparent);--gut:clamp(20px,4.45vw,80px);--ease:cubic-bezier(.2,.8,.2,1);--s-1:4px;--s-2:8px;--s-3:12px;--s-4:16px;--s-5:24px;--s-6:32px;--s-7:48px;--s-8:64px;--r-sm:4px;--r-md:6px;--r-lg:8px}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:92px}body{margin:0;background:var(--bg);color:var(--ink);font:400 16px/1.65 var(--font-text);-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}button,input,select{font:inherit}button,a,input,select,summary{touch-action:manipulation}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.45}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{outline:2px solid var(--action);outline-offset:4px}.wrap{width:calc(100% - 2 * var(--gut));max-width:1440px;margin-inline:auto;min-width:0}.site-header{height:76px;border-bottom:1px solid var(--line);background:var(--bg);position:relative;z-index:20}.header-inner{height:100%;display:flex;align-items:center;justify-content:space-between;gap:24px}.wordmark{font-size:24px;font-family:var(--font-display);font-weight:500;letter-spacing:-1.2px;display:flex;align-items:center;gap:12px}.brand-mark{width:24px;height:24px;display:grid;grid-template-columns:repeat(2,1fr);gap:3px;color:var(--action)}.brand-mark i{background:currentColor;display:block}.brand-mark i:nth-child(2){opacity:.4}.brand-mark i:nth-child(3){opacity:.7}.site-nav{display:flex;align-items:center;gap:32px}.site-nav a{font-size:14px;min-height:44px;display:flex;align-items:center}.header-note{font:13px var(--font-mono);color:var(--muted);padding-left:24px;border-left:1px solid var(--line)}.nav-toggle{display:none}.skip-link{position:fixed;left:24px;top:-90px;z-index:99;background:var(--action);color:var(--action-ink);padding:12px 24px}.skip-link:focus{top:12px}.hero{padding:38px 0 0;min-height:calc(100svh - 76px);padding-bottom:40px}.intro{display:flex;justify-content:space-between;align-items:flex-end;gap:32px;margin-bottom:32px}.intro>div{max-width:900px}.kicker{font-size:13px;color:var(--muted);margin:0 0 12px;display:flex;align-items:center;gap:10px}.kicker:before{content:'';width:18px;height:1px;background:var(--action)}h1{font:var(--display-weight) clamp(34px,3.8vw,62px)/1.08 var(--font-display);letter-spacing:var(--display-tracking-xl);margin:0 0 16px}h2{font:var(--display-weight) clamp(28px,3vw,44px)/1.1 var(--font-display);letter-spacing:var(--display-tracking);margin:0}h3{font:500 22px/1.3 var(--font-display);letter-spacing:-.5px;margin:0 0 12px}.intro p:not(.kicker){margin:0;color:var(--muted);max-width:640px}.intro-meta{text-align:right;white-space:nowrap;color:var(--muted);font:13px/1.9 var(--font-mono)}.app-frame{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden}.app-toolbar{min-height:56px;display:flex;justify-content:space-between;align-items:center;padding:0 24px;border-bottom:1px solid var(--line);gap:16px}.toolbar-title{font-size:14px;display:flex;align-items:center;gap:10px}.doc-glyph{width:13px;height:16px;border:1px solid currentColor;position:relative;opacity:.6}.doc-glyph:after{content:'';position:absolute;inset:4px 2px;border-top:1px solid;border-bottom:1px solid}.toolbar-right{font:13px var(--font-mono);color:var(--muted);display:flex;align-items:center;gap:8px}.live-indicator{width:6px;height:6px;background:var(--action);border-radius:50%}.workspace{display:grid;grid-template-columns:minmax(260px,1fr) minmax(300px,1.24fr) minmax(260px,.95fr);min-height:512px}.controls{padding:24px;border-right:1px solid var(--line);min-width:0}.controls h2{font:500 16px/1.4 var(--font-text);letter-spacing:0;margin:0 0 20px}.controls h2 span{font:13px var(--font-mono);color:var(--muted);margin-right:10px}.controls .hint{font-size:13px;line-height:1.55;color:var(--muted);margin:10px 0 16px}.row{display:flex;align-items:flex-end;gap:12px;margin:16px 0;flex-wrap:wrap}.field{flex:1;min-width:85px}label{font-size:13px;line-height:1.45;display:block;margin-bottom:8px;color:var(--muted)}input,select{width:100%;height:44px;padding:10px 12px;border:1px solid var(--line);border-radius:var(--r-sm);background:var(--bg);color:var(--ink);font-size:16px;min-width:0;font-variant-numeric:tabular-nums}input:focus,select:focus{border-color:var(--action)}.room{margin:14px 0 0;padding-bottom:14px;border-bottom:1px solid var(--line)}.room .row{margin:8px 0 0}.room-head{display:flex;justify-content:space-between;align-items:center}.room-name{font:13px var(--font-mono);color:var(--muted)}.remove{border:0;background:none;color:var(--muted);padding:0 8px;min-width:44px;min-height:44px;font-size:13px}.room-scroller{max-height:220px;overflow-y:auto;scrollbar-width:thin}.btn{display:inline-flex;justify-content:center;align-items:center;min-height:44px;padding:10px 18px;border:1px solid var(--line);border-radius:var(--r-sm);font:500 14px/1.4 var(--font-text);gap:12px}.btn--primary{background:var(--action);color:var(--action-ink);border-color:var(--action)}.btn--secondary{background:transparent;color:var(--ink)}.btn--text{background:none;color:var(--ink);padding-inline:0;border:0;text-decoration:underline;text-underline-offset:4px}.add-room{width:100%;margin-top:12px}.preset-row{display:flex;gap:8px;margin:12px 0;flex-wrap:wrap}.preset{font:13px var(--font-mono);background:var(--bg);color:var(--muted);border:1px solid var(--line);border-radius:var(--r-sm);min-height:44px;padding:7px 12px}.preset[aria-pressed=true]{border-color:var(--action);color:var(--ink);background:color-mix(in srgb,var(--action) 9%,var(--bg))}.calc-button{width:100%;margin-top:12px}.error{font-size:13px;color:#ffb4a1;margin:10px 0 0}.error:empty{display:none}.parcelmath .error{color:#a52e18}.studio{position:relative;display:flex;flex-direction:column;min-width:0;padding:24px;background:color-mix(in srgb,var(--bg) 72%,var(--surface))}.studio-head{display:flex;justify-content:space-between;gap:16px;align-items:center}.studio-head h2{font:400 13px var(--font-text);letter-spacing:0;color:var(--muted)}.view-label{font:13px var(--font-mono);color:var(--muted)}.canvas{flex:1;min-height:280px;position:relative;display:flex;align-items:center;justify-content:center;margin:16px 0}.canvas svg{display:block;width:100%;height:auto;max-height:320px;overflow:visible}.canvas text{font:13px var(--font-mono)}.studio-foot{border-top:1px solid var(--line);padding-top:16px;display:flex;justify-content:space-between;gap:16px;font:13px var(--font-mono);color:var(--muted)}.report{border-left:1px solid var(--line);padding:24px;display:flex;flex-direction:column;min-width:0}.report h2{font:500 16px var(--font-text);letter-spacing:0;margin:0 0 12px}.report-note{font-size:13px;color:var(--muted);margin:0}.main-result{margin:26px 0 24px}.big{font:400 clamp(40px,4.2vw,64px)/1 var(--font-display);letter-spacing:-3px;font-variant-numeric:tabular-nums;color:var(--action)}.result-unit{display:block;font-size:14px;color:var(--muted);margin-top:10px}.report dl{margin:0 0 20px}.report dl>div{display:flex;justify-content:space-between;gap:14px;padding:12px 0;border-bottom:1px solid var(--line);font-size:13px}.report dt{color:var(--muted)}.report dd{margin:0;text-align:right;font-variant-numeric:tabular-nums}.report .btn{width:100%;margin-top:auto}.report-limit{font-size:13px;color:var(--muted);line-height:1.5;margin:16px 0 0}.summary-strip{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--line)}.summary-strip>div{padding:16px 24px;font-size:13px;color:var(--muted);border-right:1px solid var(--line)}.summary-strip>div:last-child{border:0}.summary-strip b{display:block;font-size:14px;color:var(--ink);font-weight:500}.section{padding:72px 0;border-top:1px solid var(--line)}.section-head{display:grid;grid-template-columns:1fr 1fr;gap:48px;margin-bottom:40px;align-items:start}.section-head p{margin:0;color:var(--muted);max-width:540px}.method-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px}.formula{white-space:pre-line;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);padding:24px;font:14px/2 var(--font-mono);margin:0}.method-copy p{margin:0 0 16px}.method-copy .small{color:var(--muted);font-size:13px}.guide-row{display:grid;grid-template-columns:64px 1fr 1fr 44px;gap:24px;align-items:center;border-bottom:1px solid var(--line);padding:28px 0;min-height:140px}.guide-row .guide-num{font:14px var(--font-mono);color:var(--muted)}.guide-row h3{margin:0;font-size:24px;max-width:400px}.guide-row p{margin:0;color:var(--muted);max-width:430px}.guide-row .arrow{font-size:24px;justify-self:end}.guide-row:hover h3{text-decoration:underline;text-underline-offset:5px}.faq-layout{display:grid;grid-template-columns:1fr 1fr;gap:48px}.faq-item{padding:24px 0;border-bottom:1px solid var(--line)}.faq-item:first-child{padding-top:0}.faq-item h3{font-size:18px}.faq-item p{margin:0;color:var(--muted);font-size:16px}.type-moment{font:400 clamp(38px,6.7vw,100px)/1.05 var(--font-display);letter-spacing:-.04em;max-width:1100px;margin:0}.moment-section{padding:80px 0}.footer{border-top:1px solid var(--line);padding:32px 0}.footer-top{display:flex;justify-content:space-between;gap:32px;align-items:center}.footer-links{display:flex;gap:24px;flex-wrap:wrap}.footer-links a{min-height:44px;display:flex;align-items:center;font-size:14px}.footer-bottom{display:flex;justify-content:space-between;gap:24px;margin-top:24px;font:13px var(--font-mono);color:var(--muted)}.article{max-width:780px;margin:0 auto;padding:64px 0 96px}.article h1{font-size:48px;margin:24px 0}.article h2{font-size:28px;margin:36px 0 16px}.article p{margin:0 0 20px;line-height:1.8}.article .lede{font-size:20px;color:var(--muted)}.article>.eyebrow{font:13px var(--font-mono);color:var(--muted)}.article .button{display:inline-flex;align-items:center;min-height:44px;color:var(--action);text-decoration:underline}.article .formula{margin:24px 0}.readiness{font:13px var(--font-mono);color:var(--muted)}.diagram-legend{display:flex;gap:16px;font:13px var(--font-mono);color:var(--muted)}.diagram-legend span{display:flex;align-items:center;gap:7px}.legend-dot{width:7px;height:7px;display:inline-block;background:var(--action)}.legend-dot.hollow{background:none;border:1px solid var(--muted)}
/* PrintMeasure: a print-production workspace, with a paper surface at its center. */
.printmeasure .workspace{grid-template-columns:minmax(230px,.86fr) minmax(300px,1.4fr) minmax(250px,.95fr)}.printmeasure .studio{background:#dce1e7;color:#252c32}.printmeasure .studio-head h2,.printmeasure .view-label,.printmeasure .studio-foot{color:#475766}.printmeasure .studio-foot{border-color:#aeb8c2}.printmeasure .big{font-size:clamp(32px,3vw,48px);letter-spacing:-2px}.paper-frame{position:relative;display:flex;align-items:center;justify-content:center;width:100%;height:100%;min-height:300px;padding:26px}.paper{position:relative;display:flex;align-items:center;justify-content:center;background:#fff;color:#41474e;box-shadow:0 10px 28px #1d2b3f15;border:1px solid #c5cbd2;max-width:90%;max-height:280px;width:280px;aspect-ratio:1.5}.paper-center{text-align:center;padding:16px;display:flex;flex-direction:column;gap:8px}.paper-center strong{font:400 24px var(--font-display);letter-spacing:-1px}.paper-center span{font:13px var(--font-mono);color:#58646e}.paper img{width:100%;height:100%;object-fit:contain;position:absolute;inset:0;background:#fff}.ruler-top{position:absolute;bottom:calc(100% + 12px);left:0;right:0;text-align:center;border-bottom:1px solid #65717d;font:13px var(--font-mono);padding-bottom:6px;white-space:nowrap}.ruler-side{position:absolute;left:calc(100% + 12px);top:0;bottom:0;border-left:1px solid #65717d;writing-mode:vertical-rl;text-align:center;padding-left:6px;font:13px var(--font-mono);white-space:nowrap}.upload-zone{position:relative;border:1px dashed color-mix(in srgb,var(--ink) 30%,transparent);border-radius:var(--r-md);padding:24px 16px;display:flex;align-items:center;flex-direction:column;gap:6px;text-align:center;cursor:pointer;color:var(--ink);font-size:14px;margin-bottom:20px}.upload-zone:hover,.upload-zone.dragging{border-color:var(--action);background:color-mix(in srgb,var(--action) 6%,var(--bg))}.upload-zone input{position:absolute;inset:0;width:100%;height:100%;opacity:0;cursor:pointer}.upload-zone:focus-within{outline:2px solid var(--action);outline-offset:3px}.upload-glyph{font-size:26px;font-family:var(--font-text);font-weight:400}.upload-sub{font-size:13px;color:var(--muted)}.paper-size-row{display:flex;gap:8px;flex-wrap:wrap}.printmeasure .controls>.hint{max-width:320px}
/* ParcelMath: a shipping worksheet with an ink-on-paper dimension diagram. */
.parcelmath .hero{background:#f8f9fb}.parcelmath .app-frame{background:#fff;box-shadow:0 8px 32px #10294a05}.parcelmath .studio{background:#f5f7fb}.parcelmath .studio svg{color:#224b94}.parcelmath .big{color:var(--ink)}.parcelmath .report{background:#fff}.parcelmath .report .result-unit{color:#4b596d}.weight-bars{display:grid;gap:14px;width:100%;padding-top:16px;margin-top:auto}.weight-bar-label{display:flex;justify-content:space-between;font:13px var(--font-mono);margin-bottom:7px;color:var(--muted)}.bar-track{height:5px;background:var(--line);overflow:hidden}.bar-track i{display:block;height:100%;background:var(--action);max-width:100%;transition:transform .2s var(--ease);transform-origin:left}.weight-bars>div:last-child .bar-track i{background:#79889f}.shipping-status{margin-bottom:14px;font:13px var(--font-mono);color:var(--action)}.parcelmath .footer{background:#fff}
@media(min-width:1600px){.hero{padding-top:48px}.workspace{min-height:540px}}
@media(max-width:1100px){.workspace,.printmeasure .workspace{grid-template-columns:minmax(240px,1fr) minmax(280px,1.2fr)}.report{grid-column:1/-1;display:grid;grid-template-columns:1fr 1.6fr 1fr;gap:12px 32px;border-left:0;border-top:1px solid var(--line);align-items:start}.report h2,.report-note{grid-column:1}.main-result{grid-column:1;margin:0;grid-row:3}.report dl{grid-column:2;grid-row:1/5;margin:0}.report .btn{grid-column:3;grid-row:2}.report-limit{grid-column:3;grid-row:3;margin:0}.big{font-size:48px}.studio{min-height:440px}.intro-meta{display:none}.hero{min-height:auto}.controls{border-right:1px solid var(--line)}}
@media(max-width:720px){.site-header{height:64px}.site-nav{gap:16px}.site-nav a{font-size:13px}.header-note{display:none}.wordmark{font-size:21px;gap:8px}.brand-mark{width:18px;height:18px;gap:2px}.intro{display:block;margin-bottom:24px}.hero{padding:28px 0 32px}.kicker{margin-bottom:12px}h1{font-size:38px}.intro p:not(.kicker){font-size:16px}.workspace,.printmeasure .workspace{display:flex;flex-direction:column}.controls{padding:20px;border-right:0;border-bottom:1px solid var(--line)}.studio{padding:20px;min-height:340px}.canvas{min-height:240px}.report{display:flex;padding:24px;border-top:1px solid var(--line);gap:0}.main-result{margin:24px 0}.report dl{width:100%}.report .btn{margin-top:16px;min-height:48px}.big{font-size:56px}.printmeasure .big{font-size:42px}.summary-strip{grid-template-columns:1fr}.summary-strip>div{border-right:0;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;gap:20px;padding:12px 20px}.summary-strip b{font-size:13px}.app-toolbar{padding:0 20px}.toolbar-right{font-size:12px}.toolbar-right .live-label{display:none}.section{padding:48px 0}.section-head,.method-grid,.faq-layout{grid-template-columns:1fr;gap:24px}.section-head{margin-bottom:24px}h2{font-size:30px}.guide-row{grid-template-columns:32px 1fr 24px;gap:16px;padding:24px 0;min-height:0}.guide-row h3{font-size:22px}.guide-row p{grid-column:2;grid-row:2;font-size:16px}.guide-row .arrow{grid-column:3;grid-row:1}.formula{font-size:13px;padding:20px;overflow-wrap:anywhere}.footer-top,.footer-bottom{align-items:start;flex-direction:column;gap:16px}.footer-links{gap:20px}.footer-bottom{margin-top:20px}.article{padding:40px 0 64px}.article h1{font-size:38px}.article h2{font-size:26px}.moment-section{padding:48px 0}.type-moment{font-size:42px}.row{gap:12px}.field{min-width:80px}.controls .row{margin:16px 0}.btn{min-height:48px}.room-scroller{max-height:290px}}
@media(max-width:380px){.site-nav{gap:10px}.site-nav a{font-size:13px}.wordmark{font-size:19px}.brand-mark{display:none}.app-toolbar{padding:0 16px}.toolbar-title{font-size:13px}.controls,.studio,.report{padding:16px}h1{font-size:34px}.toolbar-right{display:none}.row{gap:8px}.field{min-width:75px}.big{font-size:48px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation:none!important;transition:none!important}.bar-track i{transition:none}}
@media print{.site-header,.footer,.btn,.preset-row,.guide-row,.type-moment{display:none}.hero{padding:0}.wrap{width:100%}.workspace{display:block}.studio{break-inside:avoid}.report{display:block}body{background:white;color:#111}.section{padding:20px 0}.report dl>div{color:#111}}

.cost-options{margin-top:16px;border-top:1px solid var(--line)}.cost-options summary{min-height:44px;display:flex;align-items:center;gap:6px;font-size:13px;color:var(--muted);cursor:pointer}.cost-options summary:before{content:"+";font:16px var(--font-mono);margin-right:4px}.cost-options[open] summary:before{content:"−"}.cost-options .row{margin:8px 0 16px}.cost-options .error{margin-bottom:12px}.controls>.hint:first-of-type{margin-bottom:12px}.hero{padding-top:32px}.intro{margin-bottom:24px}.room-head{margin-bottom:-8px}.room-head .remove{min-height:44px}

html{scroll-behavior:auto}
.wordmark{min-height:44px}
.skip-link{left:var(--gut)}
.guide-row:focus-visible{outline:2px solid var(--action);outline-offset:4px;scroll-margin-block:100px}
.controls .ui-title{font:500 16px/1.4 var(--font-text);margin-bottom:16px}
.studio-head .ui-title{font:400 13px var(--font-text);color:var(--muted)}
.report .ui-title{font:500 16px var(--font-text);margin-bottom:12px}
.intro p:not(.kicker),.section-head p,.method-copy p,.faq-item p,.guide-row p{color:var(--ink)}
.controls>.hint{color:color-mix(in srgb,var(--ink) 80%,var(--bg))}
.guide-row h3,.faq-item h3,.method-copy h3{font-size:22px}
.moment-action{margin-top:32px}
.report .big{font-size:50px}
.printmeasure .report .big{font-size:40px}
@media(max-width:720px){.guide-row h3,.faq-item h3,.method-copy h3{font-size:20px}.report .big{font-size:36px}.printmeasure .report .big{font-size:32px}}

.mobile-estimate{display:none}
.report dd{overflow-wrap:anywhere;min-width:0}
@media(max-width:720px){body:has(.mobile-estimate){padding-bottom:88px}.mobile-estimate{display:flex;position:fixed;left:0;right:0;bottom:0;z-index:30;background:var(--bg);border-top:1px solid var(--line);padding:12px 20px calc(12px + env(safe-area-inset-bottom));align-items:center;justify-content:space-between;gap:16px}.mobile-estimate>div{min-width:0}.mobile-estimate span{display:block;font-size:12px;color:var(--muted);line-height:1.3}.mobile-estimate strong{font:400 18px/1.5 var(--font-display);display:block;white-space:nowrap;overflow-wrap:anywhere}.mobile-estimate .btn{font-size:13px;min-width:130px}.type-moment{overflow-wrap:anywhere}}

.section-head,.method-grid,.faq-layout{column-gap:24px}
.kicker:before{display:none}
.report .big{font-size:42px}
.printmeasure .report .big{font-size:40px}
.guide-row{grid-template-columns:repeat(12,minmax(0,1fr));gap:24px}
.guide-row h3{grid-column:1 / span 6}
.guide-row p{grid-column:7 / span 5}
.guide-row .arrow{grid-column:12}
@media(min-width:1101px){.packwise .controls .ui-title{margin-bottom:8px}.packwise .controls>.row:first-of-type{margin-top:8px}}
@media(max-width:720px){.guide-row{grid-template-columns:minmax(0,1fr) 24px;column-gap:16px}.guide-row h3{grid-column:1}.guide-row p{grid-column:1;grid-row:2}.guide-row .arrow{grid-column:2;grid-row:1}.report .big{font-size:30px}.printmeasure .report .big{font-size:30px}}

@media(max-width:380px){.site-nav a:last-of-type{display:none}.header-inner{gap:12px}}
.mobile-estimate>div{flex:1;overflow:hidden}.mobile-estimate strong{overflow:hidden;text-overflow:ellipsis}.big{overflow-wrap:anywhere}