:root{--c-page: #f6f5f1;--c-surface: #ffffff;--c-band: #ebe9e3;--c-ink: #22211e;--c-soft: #57554f;--c-line: #d9d6cd;--c-field: #ffffff;--c-field-line: #9c988e;--c-accent: #b4461a;--c-accent-ink: #ffffff;--c-accent-soft: #f7e6dc;--c-error: #a3271b;--c-strip: #2a2926;--c-strip-ink: #e9e7e1;--f-body: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;--s-body: 18px;--s-small: 15px;--s-label: 16px;--r: 10px;--wrap: 1040px;color-scheme:light}*,*:before,*:after{box-sizing:border-box}html{-webkit-text-size-adjust:100%;text-size-adjust:100%}body{margin:0;background:var(--c-page);color:var(--c-ink);font:400 var(--s-body)/1.55 var(--f-body)}h1,h2,h3{line-height:1.2;margin:0;font-weight:650}h2{font-size:26px;letter-spacing:-.01em}h3{font-size:20px;font-weight:600}p{margin:0}a{color:var(--c-accent);text-underline-offset:3px;text-decoration-thickness:1px}a:hover{text-decoration-thickness:2px}:focus-visible{outline:3px solid var(--c-accent);outline-offset:2px}.u-sr{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}.u-skip{position:absolute;left:12px;top:-60px;background:var(--c-surface);padding:8px 14px;border-radius:8px;z-index:5}.u-skip:focus{top:10px}.u-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch}.l-wrap{max-width:var(--wrap);margin:0 auto;padding:0 20px}.l-bar{background:var(--c-page);border-bottom:1px solid var(--c-line)}.bar{display:flex;align-items:center;min-height:52px}.wordmark{display:inline-flex;align-items:center;gap:10px;color:var(--c-ink);text-decoration:none;min-height:44px}.wordmark-name{font-size:17px;font-weight:600;letter-spacing:-.01em}.wordmark-tld{color:var(--c-soft);font-weight:500}.mark{flex:none;display:block}.tool{padding-top:18px;padding-bottom:40px}.tool-head h1{font-size:26px;letter-spacing:-.02em}.tool-sub{margin-top:6px;font-size:var(--s-small);color:var(--c-soft)}.estimator{display:flex;flex-direction:column;gap:14px;margin-top:16px}.est-in{order:1}.est-out{order:2}.est-more{order:3}.seg{border:0;margin:0;padding:0;min-width:0}.seg legend{padding:0;margin-bottom:6px;font-size:var(--s-label);font-weight:600}.seg-shape{display:flex;gap:6px;flex-wrap:wrap}.seg-waste{display:block}.seg-waste .seg-item{display:inline-block;margin-right:4px}.seg-item{position:relative;display:flex}.seg-shape .seg-item{flex:1 1 auto}.seg-item input{position:absolute;opacity:0;width:1px;height:1px}.seg-item label{display:flex;align-items:center;justify-content:center;text-align:center;min-height:44px;padding:8px 14px;width:100%;border:1px solid var(--c-field-line);border-radius:999px;background:var(--c-field);font-size:var(--s-small);font-weight:500;line-height:1.25;cursor:pointer;user-select:none}.seg-item label:hover{border-color:var(--c-accent)}.seg-item input:checked+label{background:var(--c-accent);border-color:var(--c-accent);color:var(--c-accent-ink)}.seg-item input:focus-visible+label{outline:3px solid var(--c-accent);outline-offset:2px}.est-row{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:12px 0 4px}.units{order:2;display:inline-flex;padding:3px;gap:2px;min-height:44px;align-items:stretch;border:1px solid var(--c-field-line);border-radius:999px;background:var(--c-field);font:inherit;font-size:var(--s-small);color:var(--c-ink);cursor:pointer}.units span{display:flex;align-items:center;padding:0 14px;border-radius:999px}.units[aria-pressed=false] .units-imp,.units[aria-pressed=true] .units-met{background:var(--c-ink);color:var(--c-page)}.u-linkish{order:1;font:inherit;font-size:var(--s-small);color:var(--c-accent);background:none;border:0;padding:10px 2px;min-height:44px;text-decoration:underline;text-underline-offset:3px;cursor:pointer}.dims[hidden],.fld[hidden]{display:none}.fld{margin-top:0}.fld>label{display:flex;align-items:flex-end;min-height:40px;font-size:var(--s-label);font-weight:600;margin-bottom:4px}.fld-box{position:relative;display:flex;align-items:center}.fld-box input{width:100%;height:50px;padding:0 52px 0 14px;border:1px solid var(--c-field-line);border-radius:var(--r);background:var(--c-field);color:var(--c-ink);font:inherit;font-size:20px;font-variant-numeric:tabular-nums}.fld-box input::placeholder{color:var(--c-soft);opacity:.75}.fld-box input:focus{border-color:var(--c-accent);outline:2px solid var(--c-accent);outline-offset:0}.fld-box input[aria-invalid=true]{border-color:var(--c-error)}.fld-suffix{position:absolute;right:14px;color:var(--c-soft);font-size:var(--s-small);pointer-events:none}.fld-prefix{position:absolute;left:14px;color:var(--c-soft);pointer-events:none}.fld-price input{padding-left:30px}.fld-box-short{max-width:200px}.fld-err{min-height:20px;margin-top:3px;font-size:14px;color:var(--c-error)}.fld-help{margin-top:4px;font-size:14px;color:var(--c-soft)}.fld-note{margin-top:2px;font-size:14px;color:var(--c-soft)}.estimator .note-met,.estimator[data-units=met] .note-imp{display:none}.estimator[data-units=met] .note-met{display:inline}.qty-short,.estimator[data-shape=round] .qty-long{display:none}.estimator[data-shape=round] .qty-short{display:inline}.est-more{display:grid;grid-template-columns:1fr;gap:4px 20px}.est-more .seg-waste{margin-top:10px}.est-out{background:var(--c-surface);border:1px solid var(--c-line);border-radius:14px;padding:18px 18px 16px;min-height:452px}.answer{min-height:104px}.answer-big{display:flex;flex-wrap:wrap;align-items:baseline;gap:0 10px}.answer-num{font-size:36px;font-weight:700;letter-spacing:-.02em;line-height:1.15}.answer-unit{font-size:22px;font-weight:600}.estimator:not(.has-answer) .answer-num,.estimator:not(.has-answer) .answer-unit{color:var(--c-soft)}.answer-sub{margin-top:6px;font-size:14px;color:var(--c-soft);line-height:1.45}.out-label{margin-top:14px;font-size:var(--s-label);font-weight:600}.bags{width:100%;border-collapse:collapse;margin-top:4px}.bags th,.bags td{padding:9px 0;border-bottom:1px solid var(--c-line);font-size:17px}.bags th{text-align:left;font-weight:400}.bags td{text-align:right;font-weight:650;font-size:19px}.out-lines{margin:10px 0 0}.out-lines>div{display:flex;justify-content:space-between;gap:12px;padding:6px 0}.out-lines>div[hidden]{display:none}.out-lines dt{color:var(--c-soft);font-size:var(--s-small)}.out-lines dd{margin:0;font-weight:600;text-align:right}.out-hint{margin-top:8px;padding:10px 12px;border-radius:8px;background:var(--c-accent-soft);font-size:15px}.out-actions{display:flex;align-items:center;gap:12px;margin-top:12px;min-height:44px}.btn{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:0 18px;border:1px solid var(--c-ink);border-radius:999px;background:transparent;color:var(--c-ink);font:inherit;font-size:var(--s-small);font-weight:600;cursor:pointer;text-decoration:none}.btn:hover{background:var(--c-ink);color:var(--c-page)}.btn[hidden]{display:none}.out-copied{font-size:14px;color:var(--c-soft)}.nojs{margin-top:12px;font-size:15px}.band{background:var(--c-band);padding:44px 0}.band h2{margin-bottom:20px}.steps{list-style:none;margin:0;padding:0;counter-reset:step;display:grid;gap:18px}.steps li{counter-increment:step;position:relative;padding-left:48px;max-width:62ch}.steps li:before{content:counter(step);position:absolute;left:0;top:-2px;width:34px;height:34px;border-radius:50%;display:flex;align-items:center;justify-content:center;background:var(--c-page);color:var(--c-accent);font-weight:650;font-size:17px}.works{padding-top:48px;padding-bottom:48px}.works-lead{margin-top:14px;max-width:62ch}.works-cols{display:grid;gap:26px;margin-top:28px}.works-cols h3{margin-bottom:8px}.works-cols p{max-width:62ch}.formula-fold{margin-top:12px;max-width:62ch}.formula-fold summary{cursor:pointer;color:var(--c-accent);font-weight:500;min-height:44px;display:flex;align-items:center}.formula-fold summary:hover,.formula-fold summary:focus-visible{text-decoration:underline}.formula-fold p{margin-top:6px}.yield{width:100%;margin-top:26px;border-collapse:collapse;font-size:16px}.yield th,.yield td{padding:11px 6px;border-bottom:1px solid var(--c-line);text-align:right}.yield th:last-child,.yield td:last-child{padding-right:0}.yield thead th{font-weight:600;color:var(--c-soft);font-size:15px}.yield th:first-child,.yield td:first-child{text-align:left;padding-left:0}.yield tbody th{font-weight:500}.yield .yield-key{font-weight:700;color:var(--c-accent)}.faq{display:grid;gap:26px}.faq-item h3{margin-bottom:6px;font-size:19px}.faq-item p{max-width:62ch}.l-main:not(.l-main-home){padding:36px 0 56px}.doc h1{font-size:32px;letter-spacing:-.02em}.doc-lede{margin-top:12px;font-size:20px;color:var(--c-soft);max-width:58ch}.doc-part{margin-top:34px}.doc-part h2{font-size:23px;margin-bottom:10px}.doc-part p{max-width:62ch}.doc-part p+p{margin-top:12px}.doc-list{margin:0;padding-left:22px;max-width:64ch}.doc-list li+li{margin-top:8px}.doc-back{margin-top:40px}.doc-404{min-height:50vh}.doc-404 .btn{margin-top:22px}.l-foot{margin-top:0;background:var(--c-page);border-top:1px solid var(--c-line)}.foot{display:grid;gap:26px;padding-top:34px;padding-bottom:30px}.foot-brand{display:inline-flex;align-items:center;gap:9px;color:var(--c-ink);text-decoration:none;font-weight:600;font-size:16px;min-height:44px}.foot-about p{margin-top:6px;font-size:14px;color:var(--c-soft);max-width:44ch}.foot-map{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}.foot-head{font-size:14px;font-weight:600;margin-bottom:6px}.foot-map ul{list-style:none;margin:0;padding:0}.foot-map a{display:inline-block;padding:7px 0;font-size:14px;color:var(--c-ink);text-decoration:none}.foot-map a:hover{color:var(--c-accent);text-decoration:underline}.foot-legal{background:var(--c-strip);color:var(--c-strip-ink);font-size:13px;padding:12px 0}@media(min-width:700px){.yield th,.yield td{padding:11px 12px}.yield th:last-child,.yield td:last-child{padding-right:12px}.tool-head h1{font-size:34px}.est-more{grid-template-columns:1fr 1fr;align-items:start}.est-more .fld-price{grid-column:1 / -1}.steps{grid-template-columns:repeat(3,minmax(0,1fr));gap:28px}.steps li{padding-left:0;padding-top:48px}.works-cols{grid-template-columns:1fr 1fr;gap:40px}.faq{grid-template-columns:1fr 1fr;gap:30px 48px}.foot{grid-template-columns:1.2fr 1fr;align-items:start}}@media(min-width:960px){h2{font-size:30px}.tool{display:grid;grid-template-columns:minmax(0,440px) minmax(0,1fr);column-gap:48px;padding-top:26px;padding-bottom:52px}.tool-head{grid-column:1;grid-row:1}.tool-head h1{font-size:40px}.estimator{display:contents}.est-in{grid-column:1;grid-row:2;margin-top:14px}.est-more{grid-column:1;grid-row:3}.est-out{grid-column:2;grid-row:1 / span 3;align-self:start;padding:26px 28px 22px;min-height:500px}.answer-num{font-size:48px}.answer-unit{font-size:26px}.fld{margin-top:0}.band{padding:56px 0}}@media(prefers-reduced-motion:no-preference){.seg-item label,.btn,.units span{transition:background-color .15s,color .15s,border-color .15s}}