@font-face{font-family:IBM Plex Sans;font-style:normal;font-display:swap;font-weight:400;src:url(/_astro/ibm-plex-sans-latin-400-normal.CDDApCn2.woff2)format("woff2"),url(/_astro/ibm-plex-sans-latin-400-normal.CYLoc0-x.woff)format("woff")}@font-face{font-family:IBM Plex Sans;font-style:normal;font-display:swap;font-weight:500;src:url(/_astro/ibm-plex-sans-latin-500-normal.6ng42L7E.woff2)format("woff2"),url(/_astro/ibm-plex-sans-latin-500-normal.BgVn5rGT.woff)format("woff")}@font-face{font-family:IBM Plex Sans;font-style:normal;font-display:swap;font-weight:600;src:url(/_astro/ibm-plex-sans-latin-600-normal.CuJfVYMP.woff2)format("woff2"),url(/_astro/ibm-plex-sans-latin-600-normal.Cu4Hd6ag.woff)format("woff")}@font-face{font-family:IBM Plex Sans;font-style:normal;font-display:swap;font-weight:700;src:url(/_astro/ibm-plex-sans-latin-700-normal.Bxkt5Cjx.woff2)format("woff2"),url(/_astro/ibm-plex-sans-latin-700-normal.Bth3BMcD.woff)format("woff")}@font-face{font-family:IBM Plex Mono;font-style:normal;font-display:swap;font-weight:400;src:url(/_astro/ibm-plex-mono-latin-400-normal.DMJ8VG8y.woff2)format("woff2"),url(/_astro/ibm-plex-mono-latin-400-normal.CvHOgSBP.woff)format("woff")}@font-face{font-family:IBM Plex Mono;font-style:normal;font-display:swap;font-weight:500;src:url(/_astro/ibm-plex-mono-latin-500-normal.DSY6xOcd.woff2)format("woff2"),url(/_astro/ibm-plex-mono-latin-500-normal.CB9ihrfo.woff)format("woff")}:root{--bg:#f5f6f4;--surface:#fff;--text:#171a18;--text-secondary:#686d69;--text-tertiary:#8a908b;--border:#d8dcd8;--border-strong:#aeb5af;--field-border:#d0d5dd;--accent:#2f5a45;--accent-hover:#244636;--accent-soft:#edf3ef;--success:#2f6b4f;--warning:#8a6a24;--danger:#a33a3a;--danger-soft:#f8eeee;--r-input:6px;--r-btn:6px;--r-panel:8px;--r-tag:4px;--font:"IBM Plex Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;--mono:"IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;--maxw:1200px;--gutter:20px}*,:before,:after{box-sizing:border-box}html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}body{font-family:var(--font);color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased;margin:0;font-size:1.0625rem;line-height:1.6}img,svg{max-width:100%;display:block}h1,h2,h3,h4{color:var(--text);letter-spacing:-.015em;text-wrap:balance;margin:0 0 .5em;font-weight:600;line-height:1.18}h1{letter-spacing:-.025em;font-size:clamp(2rem,1.45rem + 2vw,2.75rem);line-height:1.1}h2{letter-spacing:-.02em;font-size:clamp(1.5rem,1.25rem + .9vw,1.875rem)}h3{font-size:1.15rem}p{margin:0 0 1em}a{color:var(--accent);text-underline-offset:3px;text-decoration-thickness:1px}a:hover{color:var(--accent-hover)}:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:3px}.sr-only{clip:rect(0, 0, 0, 0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.skip{background:var(--text);color:#fff;z-index:60;border-radius:var(--r-btn);padding:8px 12px;position:absolute;top:8px;left:-999px}.skip:focus{left:8px}.wrap{width:100%;max-width:var(--maxw);padding:0 var(--gutter);margin:0 auto}.print-only{display:none}.muted{color:var(--text-secondary)}[hidden]{display:none!important}.num,.mono{font-variant-numeric:tabular-nums}.label{letter-spacing:.08em;text-transform:uppercase;color:var(--text-secondary);margin:0;font-size:.75rem;font-weight:600}.site-header{z-index:40;background:var(--surface);border-bottom:1px solid var(--border);position:sticky;top:0}.site-header .wrap{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:4px 16px;min-height:64px;padding-top:6px;padding-bottom:6px;display:flex}.brand{white-space:nowrap;color:var(--text);letter-spacing:-.03em;font-size:1.25rem;font-weight:700;text-decoration:none}.brand:hover{color:var(--text)}.nav{flex-wrap:wrap;align-items:center;gap:0 24px;display:flex}.nav a{color:var(--text-secondary);border-bottom:1px solid #0000;padding:8px 0;font-size:.975rem;font-weight:500;text-decoration:none;transition:color .15s,border-color .15s}.nav a:hover{color:var(--text)}.nav a[aria-current=page]{color:var(--text);border-bottom-color:var(--text)}@media (width<=460px){.nav{gap:12px}.nav a{font-size:.9rem}.brand{font-size:1.15rem}}.site-footer{border-top:1px solid var(--border);color:var(--text-secondary);margin-top:80px;padding:32px 0 40px;font-size:.925rem}.footer-grid{align-items:baseline;gap:16px;display:grid}.footer-brand{margin:0}.footer-brand strong{color:var(--text);letter-spacing:-.02em;margin-right:8px;font-weight:700}.footer-links{flex-wrap:wrap;gap:6px 24px;margin:0;padding:0;list-style:none;display:flex}.footer-links a{color:var(--text-secondary);text-decoration:none}.footer-links a:hover{color:var(--text);text-decoration:underline}@media (width>=720px){.footer-grid{grid-template-columns:1fr auto}}.page-end{margin-top:0}@media (width<=999px){.planner-result{padding-bottom:72px}}.btn{border-radius:var(--r-btn);border:1px solid var(--field-border);background:var(--surface);min-height:44px;color:var(--text);font:inherit;cursor:pointer;justify-content:center;align-items:center;padding:0 18px;font-size:.975rem;font-weight:500;line-height:1.2;text-decoration:none;transition:background .15s,border-color .15s,color .15s;display:inline-flex}.btn:hover{border-color:var(--text);color:var(--text)}.btn.primary,.btn-primary{background:var(--text);border-color:var(--text);color:#fff}.btn.primary:hover,.btn-primary:hover{color:#fff;background:#343936;border-color:#343936}.btn.ghost{background:0 0}.btn-lg{min-height:48px;padding:0 22px;font-size:1rem}.linkish{color:var(--accent);font:inherit;text-underline-offset:3px;cursor:pointer;background:0 0;border:0;min-height:32px;margin:0;padding:4px 0;font-weight:500;text-decoration:underline 1px}.linkish:hover{color:var(--accent-hover)}.page-band{border-bottom:1px solid var(--border);background:var(--bg)}.page-head{padding:24px 0 32px}.page-title{margin-bottom:12px;display:block}.page-head h1{max-width:24ch;margin:0 0 12px}.page-head .lede{color:var(--text-secondary);max-width:62ch;margin:0;font-size:1.125rem}.breadcrumb{color:var(--text-secondary);margin-bottom:20px;font-size:.875rem}.breadcrumb ol{flex-wrap:wrap;gap:2px 8px;margin:0;padding:0;list-style:none;display:flex}.breadcrumb li+li:before{content:"/";color:var(--border-strong);margin-right:8px}.breadcrumb a{color:var(--text-secondary);text-decoration:none}.breadcrumb a:hover{color:var(--text);text-decoration:underline}.eyebrow{letter-spacing:.08em;text-transform:uppercase;color:var(--text-secondary);margin:0 0 8px;font-size:.75rem;font-weight:600}.planner{gap:24px;margin:32px 0 0;display:grid}@media (width>=1000px){.planner{grid-template-columns:minmax(0,430px) minmax(0,1fr);align-items:start;gap:40px}}.planner-form,.planner-result{min-width:0}.planner-form{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-panel);padding:24px}.toolbar{margin-bottom:20px}fieldset{border:0;min-width:0;margin:0;padding:0}legend{color:var(--text);margin-bottom:8px;padding:0;font-size:.9375rem;font-weight:600}.unit-toggle,.seg-row{border-radius:var(--r-input);background:#eceeeb;gap:2px;padding:3px;display:flex}.seg{flex:1;display:flex;position:relative}.seg input{opacity:0;cursor:pointer;width:100%;height:100%;margin:0;position:absolute;inset:0}.seg span{text-align:center;color:var(--text-secondary);border-radius:4px;flex:1;place-items:center;min-height:42px;padding:8px 10px;font-size:.9375rem;font-weight:500;line-height:1.25;transition:background .15s,color .15s;display:grid}.seg:hover span{color:var(--text)}.seg.on span{background:var(--surface);color:var(--text);box-shadow:inset 0 0 0 1px var(--border-strong);font-weight:600}.seg:focus-within{outline:2px solid var(--accent);outline-offset:1px;border-radius:4px}.seg-row{flex-wrap:wrap}.seg-row .seg{flex:78px}.unit-toggle .seg span{min-height:38px;font-size:.9rem}.section{border-top:1px solid var(--border);margin-top:24px;padding:24px 0 0}.toolbar+.section{border-top:0;margin-top:0;padding-top:0}.section-title{letter-spacing:0;margin-bottom:16px;font-size:1rem;font-weight:600}.section-intro{color:var(--text-secondary);margin:-6px 0 16px;font-size:.925rem}.collapsible>summary,.cost>summary,.item-more>summary{cursor:pointer;min-height:40px;color:var(--text);justify-content:space-between;align-items:center;padding:4px 0;font-weight:600;list-style:none;display:flex}.collapsible>summary::-webkit-details-marker,.cost>summary::-webkit-details-marker,.item-more>summary::-webkit-details-marker{display:none}.collapsible>summary:after,.cost>summary:after{content:"";border-right:1.5px solid var(--text-secondary);border-bottom:1.5px solid var(--text-secondary);flex:none;width:8px;height:8px;margin:0 4px 3px 12px;transition:transform .15s;transform:rotate(45deg)}.collapsible[open]>summary:after,.cost[open]>summary:after{margin-bottom:-3px;transform:rotate(-135deg)}.collapsible[open]>summary{margin-bottom:8px}.fields{grid-template-columns:repeat(2,minmax(0,1fr));align-items:start;gap:18px 14px;display:grid}.fields>*{grid-column:span 1}.fields>.check-field,.fields>.segmented,.fields>.rects,.fields>.field:has(.chips),.fields>.field:has(.hint){grid-column:1/-1}@media (width<=400px){.fields{grid-template-columns:1fr}}.fields>.check-field{margin:-4px 0}.field>label:not(.check),.field>legend{color:var(--text);margin-bottom:6px;font-size:.9375rem;font-weight:600;display:block}.optional{color:var(--text-secondary);font-weight:400}.input-wrap{align-items:center;display:flex;position:relative}.input-wrap input{width:100%;min-height:48px;font:inherit;color:var(--text);background:var(--surface);border:1px solid var(--field-border);border-radius:var(--r-input);font-variant-numeric:tabular-nums;padding:8px 52px 8px 14px;font-size:1.0625rem;font-weight:500;transition:border-color .15s,box-shadow .15s}.input-wrap input:hover{border-color:var(--border-strong)}.input-wrap input.has-prefix{padding:8px 14px 8px 30px}.input-wrap input:focus{border-color:var(--accent);outline:none;box-shadow:0 0 0 3px #2f5a4529}.unit{color:var(--text-secondary);pointer-events:none;text-align:right;max-width:46px;font-size:.9rem;line-height:1.1;position:absolute;right:14px}.prefix{color:var(--text-secondary);position:absolute;left:14px}.unit-long{white-space:nowrap;max-width:none;font-size:.8rem}.input-wrap:has(.unit-long) input{padding-right:124px}.has-error .input-wrap input{border-color:var(--danger);background:var(--danger-soft)}.has-error .input-wrap input:focus{box-shadow:0 0 0 3px #a33a3a29}.error{color:var(--danger);margin:6px 0 0;font-size:.9rem;font-weight:500}.hint{color:var(--text-secondary);margin:6px 0 0;font-size:.875rem;line-height:1.5}.hint.block{display:block}.default-tag,.product-tag{color:var(--text-secondary)}.default-tag.changed{color:var(--warning);font-weight:500}.chips{flex-wrap:wrap;gap:6px;margin-top:10px;display:flex}.chip{border:1px solid var(--field-border);background:var(--surface);border-radius:var(--r-input);min-height:36px;font:inherit;cursor:pointer;color:var(--text);font-variant-numeric:tabular-nums;padding:0 12px;font-size:.875rem;font-weight:500;transition:border-color .15s,background .15s}.chip:hover{border-color:var(--text)}.chip[aria-pressed=true]{background:var(--accent-soft);border-color:var(--accent);color:var(--accent-hover);font-weight:600}.check{cursor:pointer;align-items:flex-start;gap:12px;min-height:38px;margin:0;padding:5px 0;font-size:1rem;font-weight:400;display:flex}.reminders .check strong{font-weight:500}.check input{width:20px;height:20px;accent-color:var(--accent);flex:none;margin:2px 0 0}.form-actions{border-top:1px solid var(--border);flex-wrap:wrap;align-items:center;gap:10px;margin-top:24px;padding-top:20px;display:flex}.example-hint{margin-top:12px}.reset-assumptions{margin-top:10px;font-size:.9rem;display:inline-block}.jump{align-items:center;min-height:44px;font-size:.95rem;font-weight:500;display:inline-flex}@media (width>=1000px){.jump{display:none}}.rects{gap:12px;display:grid}.rect-row{border:1px solid var(--border);border-radius:var(--r-input);padding:12px 14px 10px}.rect-row legend{padding:0 6px;font-weight:600}.rect-fields{grid-template-columns:1fr;gap:14px;display:grid}@media (width>=420px){.rect-fields{grid-template-columns:1fr 1fr}}.add-rect{justify-self:start}.result-empty{border:1px dashed var(--border-strong);border-radius:var(--r-panel);padding:28px 24px}.result-empty h2{margin-bottom:8px;font-size:1.5rem}.material-list{background:var(--surface);border:1px solid var(--text);border-radius:var(--r-panel);overflow:hidden}.list-head{border-bottom:1px solid var(--border);gap:14px;padding:22px 28px 20px;display:grid}.list-head h2{margin:0;font-size:1.625rem}@media (width>=640px){.list-head{grid-template-columns:1fr auto;align-items:center}.list-head .status{grid-column:1/-1}}.actions{flex-wrap:wrap;gap:8px;display:flex}.actions .btn{flex:90px;min-height:40px;padding:0 16px;font-size:.9375rem}@media (width>=640px){.actions{flex-wrap:nowrap}.actions .btn{flex:none}}.status{color:var(--success);margin:0;font-size:.9rem;font-weight:500}.status:empty{display:none}.items{padding:4px 28px 8px}.group-h{letter-spacing:.08em;text-transform:uppercase;color:var(--text-secondary);border-bottom:1px solid var(--border);margin:24px 0 0;padding-bottom:8px;font-size:.75rem;font-weight:600}.group-h:first-child{margin-top:16px}.group-note{color:var(--text-secondary);margin:10px 0 0;font-size:.875rem}.item{border-bottom:1px solid var(--border);grid-template-columns:minmax(0,1fr);padding:20px 0 18px;display:grid}.item:last-of-type{border-bottom:0}.item-top{flex-wrap:wrap;justify-content:flex-start;align-items:center;gap:6px 12px;display:flex}.item-top h4{letter-spacing:-.01em;margin:0;font-size:1.0625rem;font-weight:600}.item .buy-label{letter-spacing:.12em;text-transform:uppercase;color:var(--text-secondary);margin:14px 0 0;font-size:.6875rem;font-weight:600}.item .buy{text-align:left;letter-spacing:-.025em;color:var(--text);font-variant-numeric:tabular-nums;overflow-wrap:anywhere;margin:0 0 8px;font-size:clamp(2rem,8.5vw,2.375rem);font-weight:700;line-height:1.08}.item .secondary{color:var(--text);margin:0 0 10px;font-size:1rem;font-weight:500}.item-facts{gap:4px;margin:0;font-size:.9375rem;display:grid}.item-facts>div{grid-template-columns:6.5rem minmax(0,1fr);gap:10px;display:grid}.item-facts dt{color:var(--text-secondary)}.item-facts dd{color:var(--text);overflow-wrap:anywhere;font-variant-numeric:tabular-nums;margin:0}@media (width>=700px){.item{grid-template-columns:minmax(0,1fr) fit-content(20rem);column-gap:32px}.item>*{grid-column:1}.item .buy-label{text-align:right;grid-area:1/2;margin:4px 0 0}.item .buy{text-align:right;grid-area:2/2/span 3;align-self:start;margin:0}}.item-more{margin-top:6px}.item-more>summary{min-height:32px;color:var(--accent);justify-content:flex-start;padding:2px 0;font-size:.9rem;font-weight:500}.item-more>summary:hover{text-decoration:underline}.details{border-left:2px solid var(--border);color:var(--text-secondary);font-family:var(--mono);margin:8px 0 4px;padding:2px 0 2px 16px;font-size:.8125rem;line-height:1.6;list-style:none}.details li{overflow-wrap:anywhere;margin:4px 0}.have{border-top:1px dashed var(--border);margin-top:8px;padding-top:6px;font-size:.9375rem}.basis{border-radius:var(--r-tag);white-space:nowrap;letter-spacing:.06em;text-transform:uppercase;border:1px solid #0000;padding:2px 7px;font-size:.6875rem;font-weight:600;line-height:1.5;display:inline-block}.basis.small{margin-left:8px}.basis.calculated{color:var(--text-secondary);background:var(--surface);border-color:var(--border)}.basis.estimated{color:var(--accent);background:var(--accent-soft);border-color:#cfdfd5}.warning,.note{border-left:2px solid var(--border-strong);color:var(--text);margin:16px 28px 0;padding:2px 0 2px 14px;font-size:.9375rem}.warning{border-left-color:var(--danger);color:var(--danger)}.note{color:var(--text-secondary)}.assumptions-used{border-top:1px solid var(--border);margin:8px 28px 28px;padding:18px 0 0}.assumptions-used h3{margin:0 0 2px;font-size:1.0625rem}.assumptions-used .as-lead{color:var(--text-secondary);margin:0 0 8px;font-size:.9375rem}.assumptions-used ul{margin:0;padding:0;list-style:none}.assumptions-used li{border-top:1px solid var(--border);grid-template-columns:minmax(0,1fr) auto;align-items:baseline;gap:0 16px;padding:10px 0;display:grid}.assumptions-used li:first-child{border-top:1px solid var(--text)}.a-label{color:var(--text);font-weight:500}.a-value{color:var(--text);text-align:right;font-variant-numeric:tabular-nums;font-weight:600}.a-status{color:var(--text-secondary);grid-column:1;font-size:.8125rem}.a-status.changed{color:var(--warning);font-weight:500}.assumptions-used li .linkish{grid-area:2/2;justify-self:end;min-height:28px;padding:0;font-size:.8125rem}@media (width>=640px){.assumptions-used li{grid-template-columns:minmax(0,1.4fr) minmax(5rem,.8fr) minmax(0,1.1fr) 4.5rem;gap:0 16px}.a-value{text-align:left;grid-area:1/2}.a-status{grid-area:1/3}.assumptions-used li .linkish{grid-area:1/4}}.as-inputs{margin-top:12px}.reminders,.already,.cost{border-top:1px solid var(--border);padding:20px 28px}.reminders h3,.already h3{margin-bottom:2px;font-size:1rem}.reminders ul,.already ul{margin:10px 0 0;padding:0;list-style:none}.reminders li+li{border-top:1px solid var(--border)}.reminders .check{font-size:.9375rem}.add-label{color:var(--text-secondary);margin-left:8px;font-size:.8125rem;font-weight:400}.already li{justify-content:space-between;align-items:center;gap:10px;padding:6px 0;font-size:.9375rem;display:flex}.cost>summary{color:var(--text-secondary);font-size:.9375rem;font-weight:500}.price-lines{gap:14px;margin-top:12px;display:grid}.cost-total{border-top:1px solid var(--text);gap:12px;margin-top:16px;padding-top:14px;display:grid}.cost-group{gap:2px;display:grid}.cost-group strong{letter-spacing:-.02em;color:var(--text);font-variant-numeric:tabular-nums;font-size:1.5rem}.math-panel{margin-top:32px}.math-panel h2{margin-bottom:8px;font-size:.75rem}.math-rows{border-top:1px solid var(--text);gap:0;margin:0;display:grid}.math-row{border-bottom:1px solid var(--border);flex-wrap:wrap;justify-content:space-between;align-items:baseline;gap:16px;padding:10px 0;font-size:.9375rem;display:flex}.math-row dt{color:var(--text-secondary)}.math-row dd{text-align:right;margin:0}.mv{color:var(--text);font-weight:600;font-family:var(--mono);font-variant-numeric:tabular-nums;font-size:.875rem}.mn{color:var(--text-secondary);font-size:.875rem}.scope{color:var(--text-secondary);max-width:60ch;margin:20px 0 0;font-size:.8125rem}.print-head{margin-bottom:8px;font-weight:600}@media (width<=520px){.planner-form{padding:20px 16px}.list-head,.reminders,.already,.cost,.items{padding-left:16px;padding-right:16px}.warning,.note,.assumptions-used{margin-left:16px;margin-right:16px}.item-facts>div{grid-template-columns:5.4rem minmax(0,1fr)}.math-row{flex-direction:column;gap:0}.math-row dd{text-align:left}}.mobile-bar{z-index:45;padding:10px 16px calc(10px + env(safe-area-inset-bottom,0px));background:var(--surface);border-top:1px solid var(--border-strong);transition:transform .18s,opacity .18s;position:fixed;bottom:0;left:0;right:0}.mobile-bar .btn{width:100%}.mobile-bar.is-hidden{opacity:0;pointer-events:none;transform:translateY(110%)}@media (width>=1000px){.mobile-bar{display:none}}.content{grid-template-columns:minmax(0,1fr);gap:0;max-width:760px;padding:24px 0 0;display:grid}.content>section{border-top:1px solid var(--border);padding:40px 0}.content>section:first-child{border-top:0}.content section>h2{margin-bottom:16px}.content h3{margin-top:28px}.content ol,.content ul.bullets{margin:0 0 1em;padding-left:24px}.content li{margin:6px 0}.content p{max-width:68ch}.content .formula,.formula{font-family:var(--mono);border-left:2px solid var(--border-strong);color:var(--text);margin:0 0 20px;padding:4px 0 4px 44px;font-size:.875rem;line-height:1.7}@media (width<=520px){.content .formula{padding-left:40px;font-size:.8125rem}}.formula li{overflow-wrap:anywhere;margin:6px 0}.table-wrap{overflow-x:auto}table{border-collapse:collapse;width:100%;font-size:.9375rem}th,td{text-align:left;border-bottom:1px solid var(--border);vertical-align:top;padding:12px 16px 12px 0}th{letter-spacing:.08em;text-transform:uppercase;color:var(--text-secondary);border-bottom:1px solid var(--text);font-size:.75rem;font-weight:600}td:nth-child(2){font-variant-numeric:tabular-nums;white-space:nowrap;font-weight:500}.kind{color:var(--text-secondary)}@media (width<=640px){.spec thead{position:absolute;left:-9999px}.spec,.spec tbody,.spec tr,.spec td{width:100%;display:block}.spec tr{border-bottom:1px solid var(--border);padding:12px 0}.spec tr:first-child{border-top:1px solid var(--text)}.spec td{border:0;padding:0}.spec td:first-child{font-weight:600}.spec td:nth-child(2){white-space:normal}}.example-box{border-left:2px solid var(--border-strong);padding:2px 0 2px 20px}.example-box p{margin-bottom:8px}.example-box ul{margin:8px 0 0;padding-left:20px}.faq h3{margin:24px 0 6px;font-size:1.0625rem}.faq h3:first-of-type{margin-top:0}.faq p{margin:0}.sources li{margin:12px 0}.sources a{overflow-wrap:anywhere}.reviewed{color:var(--text-secondary);font-size:.875rem}.related{border-top:1px solid var(--text);gap:0;display:grid}.rows{border-top:1px solid var(--text);grid-template-columns:minmax(0,1fr);column-gap:56px;margin:0;padding:0;list-style:none;display:grid}@media (width>=860px){.rows{grid-template-columns:repeat(2,minmax(0,1fr))}}.row,.related a{border-bottom:1px solid var(--border);color:var(--text-secondary);justify-content:space-between;align-items:baseline;gap:16px;padding:14px 0;font-size:.9375rem;line-height:1.45;text-decoration:none;display:flex}.row strong,.related strong{color:var(--text);letter-spacing:-.01em;font-size:1.0625rem;font-weight:600;display:block}.row:after,.related a:after{content:"→";color:var(--text-tertiary);flex:none;transition:color .15s}.row:hover,.related a:hover{color:var(--text-secondary)}.row:hover strong,.related a:hover strong{text-underline-offset:3px;text-decoration:underline}.row:hover:after,.related a:hover:after{color:var(--text)}.cat>h2,.cat>h3{letter-spacing:.1em;text-transform:uppercase;color:var(--text-secondary);margin:0 0 12px;font-size:.75rem;font-weight:600}.cat-list{gap:48px;display:grid}.group-title{letter-spacing:.1em;text-transform:uppercase;color:var(--text-secondary);margin:48px 0 12px;font-size:.75rem;font-weight:600}.filter{margin-top:24px}.filter input{width:100%;max-width:440px;min-height:48px;font:inherit;border:1px solid var(--field-border);border-radius:var(--r-input);background:var(--surface);color:var(--text);padding:8px 14px;font-size:1rem}.filter input:focus{border-color:var(--accent);outline:none;box-shadow:0 0 0 3px #2f5a4529}.hero{align-items:start;gap:40px;padding-block:48px 56px;display:grid}@media (width>=900px){.hero{grid-template-columns:minmax(0,1.12fr) minmax(0,.88fr);align-items:center;gap:72px;padding-block:80px}}.hero h1{letter-spacing:-.035em;text-wrap:balance;margin-bottom:24px;font-size:clamp(2.375rem,1.4rem + 3.4vw,3.75rem);font-weight:600;line-height:1.04}.hero p.lede{color:var(--text-secondary);max-width:28em;margin-bottom:0;font-size:1.25rem;line-height:1.5}.hero-cta{margin:32px 0 20px}.trust{color:var(--text-secondary);margin:0;font-size:.9375rem}.schedule{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-panel);overflow:hidden}.schedule-head{border-bottom:1px solid var(--border);justify-content:space-between;align-items:baseline;gap:12px;padding:14px 20px;display:flex}.schedule-head .label{color:var(--text)}.schedule-head span:last-child{font-family:var(--mono);color:var(--text-secondary);font-size:.8125rem}.schedule table{font-size:1rem}.schedule th{border-bottom:1px solid var(--border);padding:10px 20px}.schedule th:last-child,.schedule td:last-child{text-align:right}.schedule td{border-bottom:1px solid var(--border);padding:12px 20px}.schedule tr:last-child td{border-bottom:0}.schedule td:last-child{white-space:nowrap;font-variant-numeric:tabular-nums;font-weight:700}.schedule-note{border-top:1px solid var(--border);color:var(--text-secondary);margin:0;padding:12px 20px;font-size:.8125rem}.section-block{padding:64px 0 0}@media (width<=640px){.section-block{padding-top:48px}}.section-head{max-width:40em;margin-bottom:28px}.section-head h2{margin-bottom:10px}.section-head p{color:var(--text-secondary);margin:0;font-size:1.0625rem}.compare{border-top:1px solid var(--text)}.compare-head,.compare-row{border-bottom:1px solid var(--border);grid-template-columns:minmax(0,1fr);align-items:baseline;gap:4px 24px;padding:18px 0;display:grid}.compare-head{padding:10px 0;display:none}@media (width>=700px){.compare-head,.compare-row{grid-template-columns:minmax(0,1fr) 2rem minmax(0,1fr)}.compare-head{display:grid}}.compare-row .calc{color:var(--text-secondary);font-variant-numeric:tabular-nums;letter-spacing:-.01em;font-size:1.5rem;font-weight:400}.compare-row .arrow{color:var(--text-tertiary);font-size:1.25rem}.compare-row .arrow:before{content:"↓"}@media (width>=700px){.compare-row .arrow:before{content:"→"}}.compare-row .buy-out{color:var(--text);font-variant-numeric:tabular-nums;letter-spacing:-.01em;font-size:1.5rem;font-weight:700}.compare-row .buy-out small{letter-spacing:.12em;text-transform:uppercase;color:var(--text-secondary);margin-right:10px;font-size:.6875rem;font-weight:600}.compare-row .what{color:var(--text-secondary);grid-column:1/-1;margin:0;font-size:.875rem}.points{border-top:1px solid var(--text);margin:0;padding:0}.point{border-bottom:1px solid var(--border);gap:4px 48px;padding:20px 0;display:grid}@media (width>=800px){.point{grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr)}}.point dt{color:var(--text);font-size:1.0625rem;font-weight:600}.point dd{color:var(--text-secondary);max-width:52ch;margin:0}#result,.material-list,#projects{scroll-margin-top:84px}@media print{@page{margin:14mm}body{color:#000;background:#fff;font-size:12pt}.cost,.reminders,.already,.no-print,.site-header,.site-footer,.breadcrumb,.page-band,.content,.planner-form,.math-panel,.skip,.status,.actions,.mobile-bar{display:none!important}.print-only{display:block!important}.wrap{max-width:none;padding:0}.planner{margin:0;display:block}.material-list{border:0}.list-head{border:0;padding:0 0 8px;display:block}.list-head h2{font-size:20pt}.items{padding:0}.item{break-inside:avoid;border:0;border-bottom:1px solid #888;padding:8px 0 8px 30px;display:block;position:relative}.item:before{content:"";border:1.5px solid #000;width:15px;height:15px;position:absolute;top:12px;left:0}.item .buy{color:#000;text-align:left;font-size:16pt}.item .buy-label,.basis,.item-top .basis{display:none}.details{color:#333;font-size:9.5pt}.item .secondary,.item-facts{color:#222;margin:0;font-size:9.5pt}.group-h{color:#000;font-size:10pt}.group-note,.a-status,.assumptions-used .linkish{display:none!important}.assumptions-used{border:0;margin:14px 0 0;padding:0}.assumptions-used li{justify-content:space-between;padding:3px 0;display:flex;border:0!important}.a-value{font-size:11pt}.reminders-print ul{padding:0;list-style:none}.reminders-print li{padding:4px 0 4px 30px;position:relative}.reminders-print li:before{content:"";border:1.5px solid #000;width:14px;height:14px;position:absolute;top:7px;left:0}.scope{color:#333;font-size:9pt}a{color:#000;text-decoration:none}}.actions .btn{white-space:nowrap}@media (width<=400px){.actions .btn{padding:0 10px}}.content h3 a{color:var(--text)}.share-note{margin:0}@media (width>=640px){.list-head .share-note{grid-column:1/-1}}h1,h2,h3,h4,summary,legend,.seg span,.btn,.row,.chip{overflow-wrap:anywhere}.unit-toggle{flex-wrap:wrap}.a-label,.a-value,.a-status,.item-facts dd{overflow-wrap:anywhere;min-width:0}@media (width<=400px){.fields{grid-template-columns:minmax(0,1fr)}}.fields>*{min-width:0}body{overflow-wrap:break-word}table{overflow-wrap:normal}.check>span{overflow-wrap:anywhere;min-width:0}.footer-brand a{color:var(--text-secondary);text-decoration-thickness:1px}.footer-brand a:hover{color:var(--text)}.rows.single{grid-template-columns:minmax(0,1fr)}.guide-cat .rows{margin-bottom:8px}.guides-foot{margin:40px 0 0}.guide-head h1{max-width:26ch}.guide-head .answer{color:var(--text);max-width:62ch;margin:0 0 24px;font-size:1.1875rem;line-height:1.55}.guide-meta{color:var(--text-secondary);margin:16px 0 0;font-size:.875rem}.guide-meta a{color:var(--text-secondary)}.guide-cta.compact{flex-wrap:wrap;align-items:center;gap:10px 18px;display:flex}.guide-cta-caption{color:var(--text-secondary);font-size:.875rem}.guide-cta.full{border-top:1px solid var(--text);border-bottom:1px solid var(--border);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:16px 28px;margin:8px 0 0;padding:24px 0;display:flex}.guide-cta-title{letter-spacing:-.01em;margin:0 0 4px;font-size:1.125rem;font-weight:600}.guide-cta-text{color:var(--text-secondary);max-width:52ch;margin:0}.content.guide{padding-top:8px}.content.guide>article.prose,.content.guide>section,.content.guide>aside{border-top:0;padding:0}.content.guide>section,.content.guide>aside{margin-top:56px}.prose{padding-top:24px}.prose>:first-child{margin-top:0}.prose h2{margin:48px 0 14px}.prose h3{margin:32px 0 10px;font-size:1.125rem}.prose p{max-width:66ch}.prose ul,.prose ol{max-width:66ch;margin:0 0 1em;padding-left:22px}.prose li{margin:6px 0}.prose a{text-decoration-thickness:1px}.prose code,.formula-line{font-family:var(--mono);font-size:.9em}.formula-block{border-left:2px solid var(--border-strong);font-family:var(--mono);margin:20px 0;padding:6px 0 6px 18px;font-size:.9375rem;line-height:1.6}.formula-block p{overflow-wrap:anywhere;max-width:none;margin:6px 0}.assumes{border:1px solid var(--border);border-radius:var(--r-input);background:var(--surface);max-width:66ch;margin:20px 0;padding:12px 16px;font-size:.9375rem}.assumes-label{letter-spacing:.1em;text-transform:uppercase;color:var(--text-secondary);margin:0 0 4px;font-size:.6875rem;font-weight:600}.assumes ul{margin:0;padding-left:18px}.assumes li{margin:2px 0}.changes{border-top:1px solid var(--text);border-bottom:1px solid var(--border);max-width:66ch;margin:32px 0;padding:14px 0 12px}.changes-title{letter-spacing:.1em;text-transform:uppercase;color:var(--text-secondary);margin:0 0 6px;font-size:.75rem;font-weight:600}.changes ul{margin:0;padding-left:20px}.changes li{margin:5px 0}.data-table,.worked{max-width:100%;margin:24px 0}.data-table table,.worked table{border-collapse:collapse;width:100%;font-size:.9375rem}.data-table caption{text-align:left;padding-bottom:8px;font-weight:600}.data-table th,.data-table td,.worked th,.worked td{border-bottom:1px solid var(--border);text-align:left;vertical-align:top;padding:10px 14px 10px 0}.data-table thead th,.worked thead th{letter-spacing:.08em;text-transform:uppercase;color:var(--text-secondary);border-bottom:1px solid var(--text);font-size:.6875rem;font-weight:600}.data-table tbody th,.worked tbody th{font-weight:600}.data-table .num,.worked .num{text-align:right;font-variant-numeric:tabular-nums;padding-left:14px;padding-right:0}.data-table td,.worked td{white-space:normal;overflow-wrap:break-word}.worked{border-top:1px solid var(--text);padding-top:12px}.worked-title{max-width:none;margin:0 0 8px;font-weight:600}.worked-tag{letter-spacing:.08em;text-transform:uppercase;color:var(--accent);background:var(--accent-soft);border-radius:var(--r-tag);vertical-align:1px;border:1px solid #cfdfd5;margin-right:8px;padding:1px 7px;font-size:.6875rem;font-weight:600;display:inline-block}.worked-basis{color:var(--text-secondary);margin-top:2px;font-size:.8125rem;font-weight:400;display:block}.worked .buy-cell{font-weight:700}@media (width<=600px){.data-table thead,.worked thead{position:absolute;left:-9999px}.data-table table,.data-table tbody,.data-table tr,.data-table td,.data-table th,.worked table,.worked tbody,.worked tr,.worked td,.worked th{width:100%;display:block}.data-table tr,.worked tr{border-bottom:1px solid var(--border);padding:10px 0}.data-table td,.data-table th,.worked td,.worked th{border:0;padding:2px 0;text-align:left!important}.data-table td:before,.worked td:before{content:attr(data-label);min-width:6.5rem;color:var(--text-secondary);font-size:.8125rem;font-weight:400;display:inline-block}.data-table .num,.worked .num{padding-left:0}}.data-table tbody th,.worked tbody th{text-transform:none;letter-spacing:normal;font-size:inherit;color:var(--text);font-weight:600}