/*
Theme Name: SureFit Fit
Theme URI: https://surefitapplianceservices.com
Description: Lightweight, static-CSS theme for the SureFit appliance dimensions / "will it fit?" directory. Bespoke "measurement instrument" design system.
Author: SureFit
Version: 0.9.0
*/

/* ---------- self-hosted fonts (woff2 variable; no third-party request) ---------- */
@font-face{font-family:'Chivo';font-style:normal;font-weight:400 900;font-display:swap;src:url('assets/fonts/chivo.woff2') format('woff2')}
@font-face{font-family:'Inter';font-style:normal;font-weight:100 900;font-display:swap;src:url('assets/fonts/inter.woff2') format('woff2')}
@font-face{font-family:'JetBrains Mono';font-style:normal;font-weight:100 800;font-display:swap;src:url('assets/fonts/jetbrains-mono.woff2') format('woff2')}

/* ---------- tokens ---------- */
:root{
  --bg:#FAF8F4;        /* warm off-white */
  --surface:#FFFFFF;   /* card */
  --ink:#1F2421;       /* headings */
  --body:#3A413C;      /* body text */
  --muted:#6B716A;     /* secondary */
  --faint:#6E6757;     /* labels (darkened to WCAG AA on bg) */
  --line:#E3DFD6;      /* hairline */
  --accent:#D9622B;    /* action */
  --accent-h:#B8501F;  /* action hover + accent text (AA) */
  --accent-d:#9A4419;  /* button hover */
  --fit:#2E7D52;       /* fits */
  --fit-bg:#E7F1EA;
  --fit-line:#BBD9C7;
  --no:#C0392B;        /* won't fit */
  --no-bg:#F7E7E5;
  --head:'Chivo',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;
  --sans:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;
  --mono:'JetBrains Mono',ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --maxw:1120px;
  --r:4px;
}

/* ---------- base ---------- */
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--sans);font-size:16px;line-height:1.65;color:var(--body);background:var(--bg);-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto}
a{color:var(--accent-h);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3,h4{font-family:var(--head);color:var(--ink);line-height:1.15;font-weight:700;letter-spacing:-.01em;margin:0 0 .45em}
h1{font-size:clamp(1.9rem,3.4vw,2.7rem);font-weight:800;letter-spacing:-.022em}
h2{font-size:1.5rem;margin-top:1.5em}
h3{font-size:1.12rem;margin-top:1.2em}
p{margin:0 0 1em}
small{font-size:.82rem}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.lead{font-size:1.16rem;color:var(--muted);line-height:1.5}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums}
.muted{color:var(--muted)}

/* ---------- buttons ---------- */
.btn{display:inline-block;background:var(--accent-h);color:#fff;padding:11px 18px;border-radius:var(--r);font-weight:700;font-family:var(--sans);border:0;cursor:pointer;font-size:.95rem;line-height:1.2}
.btn:hover{background:var(--accent-d);text-decoration:none;color:#fff}
.btn-ghost{background:transparent;color:var(--accent);border:1px solid var(--line)}
.btn-ghost:hover{background:var(--surface);border-color:var(--accent);color:var(--accent)}

/* ---------- header / nav ---------- */
.site-header{background:var(--surface);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50}
.site-header .wrap{display:flex;align-items:center;gap:26px;min-height:64px}
.brand{font-family:var(--head);font-weight:800;font-size:1.3rem;color:var(--ink);letter-spacing:-.02em}
.brand:hover{text-decoration:none}
.brand span{color:var(--accent)}
.nav{display:flex;gap:20px;align-items:center}
.nav a{color:var(--body);font-weight:500;font-size:.94rem}
.nav a:hover{color:var(--accent);text-decoration:none}
.nav-cta{margin-left:auto}

/* ---------- breadcrumb ---------- */
.crumbs{font-family:var(--mono);font-size:.78rem;color:var(--muted);padding:16px 0 0}
.crumbs a{color:var(--muted)}
.crumbs a:hover{color:var(--accent)}
.crumbs .sep{margin:0 7px;color:#C9C1B4}

/* ---------- layout ---------- */
.layout{display:grid;grid-template-columns:minmax(0,1fr);gap:34px;padding:24px 0 52px}
@media(min-width:920px){.layout.has-rail{grid-template-columns:minmax(0,1fr) 320px}}
.rail{display:flex;flex-direction:column;gap:18px}
.page-head{padding:6px 0 2px}

/* ---------- measurement motif ---------- */
.ruler-top{height:9px;border-bottom:1px solid var(--line);
  background-image:repeating-linear-gradient(90deg,var(--line) 0 1px,transparent 1px 8px)}
.inch-grid{background-color:var(--surface);
  background-image:repeating-linear-gradient(0deg,rgba(31,36,33,.04) 0 1px,transparent 1px 24px),
                   repeating-linear-gradient(90deg,rgba(31,36,33,.04) 0 1px,transparent 1px 24px)}
.dim{display:grid;grid-template-columns:120px 1fr auto;align-items:center;gap:16px;padding:10px 0;border-bottom:1px solid var(--line)}
.dim:last-child{border-bottom:0}
.dim .dl{font-weight:600;color:var(--ink);font-size:.9rem}
.dim .dline{position:relative;height:1px;background:var(--line)}
.dim .dline::before,.dim .dline::after{content:"";position:absolute;top:-4px;width:1px;height:9px;background:var(--muted)}
.dim .dline::before{left:0}.dim .dline::after{right:0}
.dim .dv{font-family:var(--mono);font-weight:500;color:var(--ink);font-size:.95rem;font-variant-numeric:tabular-nums;white-space:nowrap}

/* ---------- cards / spec ---------- */
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:18px 20px;margin:14px 0}
.spec-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;margin:0 0 22px}
.spec-card .body{padding:18px 20px}
.spec-card h2,.spec-card h3{margin-top:0}

/* stat call-outs */
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:2px;background:var(--line);border:1px solid var(--line);border-radius:var(--r);overflow:hidden}
.stat{background:var(--surface);padding:14px 16px}
.stat .num{font-family:var(--mono);font-size:1.5rem;font-weight:700;color:var(--ink);font-variant-numeric:tabular-nums;line-height:1.05}
.stat .unit{display:block;font-size:.72rem;color:var(--faint);text-transform:uppercase;letter-spacing:.07em;margin-top:5px}

/* verdict */
.verdict{display:inline-flex;align-items:center;gap:10px;background:var(--fit-bg);color:var(--fit);border:1px solid var(--fit-line);border-radius:var(--r);padding:11px 15px;font-weight:600;font-size:.98rem;line-height:1.4}
.verdict.no{background:var(--no-bg);color:var(--no);border-color:#E4B7B2}
.verdict svg{flex:0 0 auto}

/* ---------- tables ---------- */
.spec-table{width:100%;border-collapse:collapse;font-size:.93rem;margin:1.1em 0;background:var(--surface);border:1px solid var(--line);border-radius:var(--r)}
.spec-table thead th{position:sticky;top:64px;background:var(--bg);text-align:left;font-family:var(--sans);font-weight:600;color:var(--muted);font-size:.74rem;text-transform:uppercase;letter-spacing:.05em;padding:10px 13px;border-bottom:2px solid var(--line)}
.spec-table td{padding:9px 13px;border-bottom:1px solid var(--line);color:var(--body)}
.spec-table tbody tr:last-child td{border-bottom:0}
.spec-table tbody th{text-align:left;padding:9px 13px;border-bottom:1px solid var(--line);color:var(--muted);font-weight:600;font-family:var(--sans);width:40%}
.spec-table tbody tr:nth-child(even){background:rgba(31,36,33,.018)}
.spec-table .num{font-family:var(--mono);font-variant-numeric:tabular-nums;color:var(--ink);white-space:nowrap}
.spec-table .r{text-align:right}
.spec-table a{font-weight:600}
.spec-table .spec-detail-head th{padding-top:18px;background:var(--bg);color:var(--ink);font-family:var(--mono);font-size:.72rem;letter-spacing:.07em;text-transform:uppercase;border-top:2px solid var(--line)}
.spec-table .spec-detail th{width:62%;overflow-wrap:anywhere}
.spec-table .spec-detail-note td{background:rgba(31,36,33,.035);color:var(--muted);font-size:.8rem;line-height:1.45}
/* mobile: let wide spec/model tables scroll horizontally instead of forcing page overflow */
@media(max-width:560px){.prose table{display:block;overflow-x:auto;-webkit-overflow-scrolling:touch;max-width:100%}}
.src-note{font-family:var(--mono);font-size:.72rem;color:var(--faint);margin:.2em 0 1.4em}
/* embeddable size-chart link asset */
.sf-embed-chart{margin:0 0 30px}
.sf-embed-box{border:1px solid var(--line);border-radius:var(--r);background:var(--surface);padding:14px 16px;margin:10px 0 0}
.sf-embed-head{display:flex;align-items:center;justify-content:space-between;gap:12px}
.sf-embed-copy{font-size:.8rem;padding:5px 13px}
.sf-embed-code{width:100%;box-sizing:border-box;font-family:var(--mono);font-size:.76rem;line-height:1.45;color:var(--body);background:var(--bg);border:1px solid var(--line);border-radius:6px;padding:10px;resize:vertical}

/* ---------- fit tool ---------- */
.fit-tool{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);overflow:hidden}
.fit-tool .body{padding:18px 20px}
.fit-tool label{display:block;font-weight:600;font-size:.85rem;color:var(--ink);margin:0 0 6px}
.fit-tool input[type=number],.fit-tool select{width:100%;padding:11px 12px;border:1px solid var(--line);border-radius:var(--r);font-size:1rem;font-family:var(--mono);background:var(--bg);color:var(--ink);margin-bottom:6px}
.fit-tool input[type=number]:focus,.fit-tool select:focus{outline:2px solid var(--accent);outline-offset:1px;border-color:var(--accent)}
.fit-tool .ruler-track{height:7px;background-image:repeating-linear-gradient(90deg,var(--line) 0 1px,transparent 1px 6px);margin:0 0 14px}
.fit-results{list-style:none;padding:0;margin:1.1em 0}
.fit-results li{padding:9px 0;border-bottom:1px solid var(--line)}
.fit-results li:last-child{border-bottom:0}
.fit-results a{font-weight:600}
.fit-results .fit-basis{display:block;margin:.35em 0 0;font-size:.84rem;line-height:1.45;color:var(--muted)}
.fit-badge{display:inline-block;margin:0 .35em .2em 0;padding:2px 7px;border:1px solid var(--line);border-radius:999px;font-family:var(--mono);font-size:.67rem;font-weight:700;letter-spacing:.02em;text-transform:uppercase;vertical-align:1px}
.fit-badge.verified{border-color:#4f7c63;background:#eef7f1;color:#28573d}
.fit-badge.possible{background:var(--bg);color:var(--muted)}
.fit-alert{margin:12px 0 0;padding:10px 12px;border-left:3px solid var(--accent);background:var(--bg);font-size:.9rem;line-height:1.45}
.fit-disclaimer{margin:18px 0 0;font-size:.78rem;line-height:1.45;color:var(--muted)}

/* ---------- where to buy ---------- */
.wtb{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);overflow:hidden}
.wtb h3{margin:0;padding:13px 16px;font-size:.95rem;border-bottom:1px solid var(--line);background:var(--bg)}
.wtb .retailer{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 16px;border-bottom:1px solid var(--line)}
.wtb .retailer:last-of-type{border-bottom:0}
.wtb .r-name{font-weight:600;color:var(--ink);font-size:.92rem}
.wtb .btn{padding:7px 13px;font-size:.82rem}
.wtb .note{padding:10px 16px;font-size:.72rem;color:var(--muted);font-family:var(--mono);border-top:1px solid var(--line)}

/* ---------- receded ad ---------- */
.ad-slot{background:var(--bg);border:1px solid var(--line);border-radius:var(--r);padding:12px 14px}
.ad-slot::before{content:"sponsored";display:block;font-family:var(--mono);font-size:.64rem;text-transform:lowercase;letter-spacing:.09em;color:var(--faint);margin-bottom:9px}
.ad-slot .ad-fill{display:flex;align-items:center;justify-content:center;height:100px;border:1px dashed var(--line);border-radius:3px;color:#BEB5A6;font-size:.78rem;font-family:var(--mono)}
.ad-slot.rail .ad-fill{height:300px}

/* ---------- diagram ---------- */
.diagram{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:22px 20px;margin:0 0 22px}
.diagram svg{display:block;width:100%;height:auto;max-width:540px;margin:0 auto}
.diagram .dl{stroke:var(--muted);stroke-width:1}
.diagram .box{fill:var(--bg);stroke:var(--accent);stroke-width:2}
.diagram .clr{fill:none;stroke:var(--faint);stroke-width:1;stroke-dasharray:4 3}
.diagram text{fill:var(--ink);font-family:var(--mono);font-size:11px}
.diagram .lbl{fill:var(--muted);font-size:10px}
.diagram figcaption{margin-top:14px;font-size:.8rem;color:var(--muted);text-align:center;font-family:var(--mono)}

/* ---------- provenance / trust ---------- */
.provenance{display:flex;align-items:center;gap:8px;font-family:var(--mono);font-size:.8rem;color:var(--muted);margin:10px 0}
.provenance svg{flex:0 0 auto;color:var(--fit)}
.trust-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:16px}
.trust-card h3{margin:0 0 8px;font-size:.95rem}
.trust-card p{margin:0;font-size:.85rem;color:var(--muted)}

/* ---------- related / faq ---------- */
.related{display:flex;flex-wrap:wrap;gap:10px;margin:18px 0}
.related a{border:1px solid var(--line);border-radius:var(--r);padding:8px 14px;color:var(--ink);font-weight:500;font-size:.9rem;background:var(--surface)}
.related a:hover{border-color:var(--accent);color:var(--accent);text-decoration:none}
.faq details{border:1px solid var(--line);border-radius:var(--r);background:var(--surface);margin:10px 0}
.faq summary{cursor:pointer;padding:14px 16px;font-weight:600;color:var(--ink);list-style:none;font-size:.96rem}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";float:right;color:var(--accent);font-family:var(--mono);font-weight:700}
.faq details[open] summary::after{content:"\2013"}
.faq .a{padding:0 16px 15px;color:var(--body);font-size:.93rem}

/* ---------- pagination ---------- */
.pager{margin:20px 0}
.pager .page-numbers{display:inline-block;padding:8px 12px;border:1px solid var(--line);border-radius:var(--r);margin:0 6px 6px 0;color:var(--ink);font-family:var(--mono);font-size:.85rem;background:var(--surface)}
.pager .page-numbers.current{background:var(--accent);color:#fff;border-color:var(--accent)}
.pager a.page-numbers:hover{border-color:var(--accent);text-decoration:none}
.pager .screen-reader-text{position:absolute;clip:rect(1px,1px,1px,1px);height:1px;width:1px;overflow:hidden}

/* ---------- prose ---------- */
.prose>p:first-child{margin-top:0}
.prose h2:first-child{margin-top:0}

/* ---------- hero / home ---------- */
.hero{display:grid;grid-template-columns:1fr;gap:30px;align-items:center;padding:40px 0 30px}
@media(min-width:920px){.hero{grid-template-columns:1.05fr .95fr}}
.hero h1{margin-bottom:.3em}
.hero .sub{font-size:1.18rem;color:var(--muted);line-height:1.5;max-width:30em}
.steps{display:grid;grid-template-columns:1fr;gap:14px;margin:8px 0 30px}
@media(min-width:680px){.steps{grid-template-columns:repeat(3,1fr)}}
.step{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:16px 18px}
.step .n{font-family:var(--mono);color:var(--accent);font-weight:700;font-size:.85rem}
.step h3{margin:.3em 0 .2em;font-size:1rem}
.step p{margin:0;font-size:.9rem;color:var(--muted)}
.browse{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin:14px 0 30px}
@media(min-width:760px){.browse{grid-template-columns:repeat(5,1fr)}}
.browse a{display:block;background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:16px;color:var(--ink);font-weight:600}
.browse a:hover{border-color:var(--accent);text-decoration:none}
.browse a small{display:block;font-family:var(--mono);font-weight:400;color:var(--muted);font-size:.78rem;margin-top:6px}
.guide-grid{display:grid;grid-template-columns:1fr;gap:12px;margin:14px 0 30px}
@media(min-width:680px){.guide-grid{grid-template-columns:repeat(2,1fr)}}
.guide-grid a{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:14px 16px;color:var(--ink);font-weight:600}
.guide-grid a:hover{border-color:var(--accent);text-decoration:none}
.section-head{display:flex;align-items:baseline;justify-content:space-between;gap:12px;margin:30px 0 4px}
.section-head a{font-size:.85rem}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:#C9CFC9;margin-top:50px;padding:42px 0 28px}
.site-footer .wrap{display:grid;grid-template-columns:1.5fr repeat(3,1fr);gap:30px}
.site-footer .f-brand{font-family:var(--head);font-weight:800;font-size:1.2rem;color:#fff}
.site-footer .f-brand span{color:var(--accent)}
.site-footer .f-tag{margin:.6em 0 0;color:#8A9089;font-size:.88rem;max-width:24em}
.site-footer h3{font-family:var(--sans);font-size:.76rem;text-transform:uppercase;letter-spacing:.06em;color:#8A9089;margin:0 0 12px;font-weight:700}
.site-footer a{color:#C9CFC9;display:block;padding:3px 0;font-size:.9rem}
.site-footer a:hover{color:#fff}
.site-footer .f-prov{grid-column:1/-1;border-top:1px solid #34403A;margin-top:16px;padding-top:18px;font-size:.8rem;color:#8A9089;font-family:var(--mono);line-height:1.6}
@media(max-width:760px){.site-footer .wrap{grid-template-columns:1fr 1fr}}
@media(max-width:560px){.stats{grid-template-columns:repeat(2,1fr)}}

/* ---------- responsive nav ---------- */
@media(max-width:820px){
  .site-header .wrap{flex-wrap:wrap;gap:14px;padding-top:12px;padding-bottom:12px}
  .nav{order:3;width:100%;overflow-x:auto;gap:18px;padding-bottom:2px;-webkit-overflow-scrolling:touch}
  .nav a{white-space:nowrap}
  .nav-cta{margin-left:auto;order:2}
  .spec-table thead th{top:0}
}

/* ---------- guides ---------- */
.byline{display:flex;align-items:center;gap:8px;font-family:var(--mono);font-size:.8rem;color:var(--muted);margin:8px 0 0;flex-wrap:wrap}
.byline svg{flex:0 0 auto;color:var(--fit)}
.byline strong{color:var(--ink);font-weight:600}
.byline a{color:var(--muted);text-decoration:underline;text-decoration-color:var(--line)}
.byline a:hover{color:var(--accent)}

.toc{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:14px 18px;margin:0 0 26px}
.toc .toc-h{font-family:var(--sans);font-size:.72rem;text-transform:uppercase;letter-spacing:.07em;color:var(--faint);margin:0 0 8px;font-weight:700}
.toc ol{margin:0;padding:0;list-style:none;counter-reset:toc;columns:2;column-gap:30px}
.toc li{counter-increment:toc;padding:4px 0;break-inside:avoid}
.toc li::before{content:counter(toc,decimal-leading-zero);font-family:var(--mono);font-size:.74rem;color:var(--accent);margin-right:9px}
.toc a{color:var(--ink);font-weight:500;font-size:.92rem}
.toc a:hover{color:var(--accent)}
@media(max-width:560px){.toc ol{columns:1}}

.callout{background:var(--surface);border:1px solid var(--line);border-left:3px solid var(--faint);border-radius:var(--r);padding:14px 18px;margin:18px 0}
.callout .c-h{font-family:var(--head);font-weight:700;color:var(--ink);margin:0 0 5px;font-size:1rem}
.callout p{margin:0 0 .6em}
.callout p:last-child{margin:0}
.callout.warn{border-left-color:var(--no);background:var(--no-bg)}
.callout.warn .c-h{color:var(--no)}
.callout.tip{border-left-color:var(--fit);background:var(--fit-bg)}
.callout.tip .c-h{color:var(--fit)}

.steps-list{list-style:none;counter-reset:step;padding:0;margin:1.1em 0}
.steps-list>li{counter-increment:step;position:relative;padding:3px 0 14px 44px;margin:0}
.steps-list>li::before{content:counter(step);position:absolute;left:0;top:-2px;width:28px;height:28px;display:flex;align-items:center;justify-content:center;background:var(--surface);border:1px solid var(--line);border-radius:50%;font-family:var(--mono);font-weight:700;font-size:.85rem;color:var(--accent)}

.cols2{display:grid;grid-template-columns:1fr;gap:16px;margin:1.1em 0}
@media(min-width:680px){.cols2{grid-template-columns:1fr 1fr}}
.cols2 .col{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:14px 18px}
.cols2 .col h3{margin-top:0}
.cols2 ul{margin:0;padding-left:1.1em}

.alt-unit{font-family:var(--mono);font-size:.85em;color:var(--faint);white-space:nowrap}

.prose h2[id]{scroll-margin-top:84px}
.prose ul,.prose ol{margin:0 0 1em;padding-left:1.3em}
.prose li{margin:.3em 0}
.prose figure.diagram{margin:22px 0}

/* ---------- model page: derived blocks ---------- */
.cap-ctx{margin:12px 0 0;font-size:.9rem;color:var(--muted)}
.cap-ctx b{color:var(--ink);font-family:var(--mono);font-variant-numeric:tabular-nums}
.card.minopen{font-size:.95rem;line-height:1.7}
.card.minopen strong{color:var(--ink)}
.fit-note{font-size:.93rem;color:var(--body);margin:12px 0}

/* ---------- homepage v2 (measurement-instrument identity) ---------- */
.hero{align-items:start}
.hero-lead .fit-tool{margin:18px 0 14px}
.hero-diagram{margin:0;align-self:stretch;display:flex;flex-direction:column;justify-content:center}
.hero-diagram svg{max-width:100%}
@media(max-width:920px){.hero-diagram{margin-top:8px}}

/* ruler-tick section divider — the recurring signature */
.rule{height:10px;margin:34px 0;background-image:repeating-linear-gradient(90deg,var(--line) 0 1px,transparent 1px 9px);border-bottom:1px solid var(--line)}

/* instrument stat band */
.statband{display:flex;flex-wrap:wrap;border:1px solid var(--line);border-radius:var(--r);background:var(--surface);margin:8px 0 0;overflow:hidden}
.stat-rd{flex:1 1 0;min-width:150px;padding:16px 20px;border-right:1px solid var(--line)}
.stat-rd:last-child{border-right:0}
.stat-rd .n{display:block;font-family:var(--mono);font-variant-numeric:tabular-nums;font-size:1.55rem;font-weight:700;color:var(--ink);line-height:1.05;letter-spacing:-.01em}
.stat-rd .l{display:block;font-size:.78rem;color:var(--muted);margin-top:6px;line-height:1.35}
@media(max-width:680px){.stat-rd{flex-basis:50%;border-bottom:1px solid var(--line)}.stat-rd:nth-child(even){border-right:0}}

/* browse-by-appliance as spec readouts */
.browse-spec{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin:14px 0 0}
@media(min-width:760px){.browse-spec{grid-template-columns:repeat(5,1fr)}}
.browse-spec a{display:flex;flex-direction:column;gap:7px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:18px 16px;color:var(--ink)}
.browse-spec a:hover{border-color:var(--accent);text-decoration:none}
.browse-spec .w{font-family:var(--mono);font-variant-numeric:tabular-nums;font-size:1.4rem;font-weight:700;color:var(--accent);line-height:1}
.browse-spec .nm{font-weight:600;font-size:.95rem}

/* editorial guide list (not a card grid) */
.guide-list{list-style:none;margin:14px 0 0;padding:0;border-top:1px solid var(--line)}
.guide-list li{border-bottom:1px solid var(--line)}
.guide-list a{display:block;padding:15px 6px;color:var(--ink)}
.guide-list a:hover{text-decoration:none;background:rgba(31,36,33,.02)}
.guide-list .g-t{display:block;font-family:var(--head);font-weight:700;font-size:1.08rem;letter-spacing:-.01em}
.guide-list a:hover .g-t{color:var(--accent)}
.guide-list .g-d{display:block;color:var(--muted);font-size:.92rem;margin-top:3px;line-height:1.45}

.section-head .sh-note{font-family:var(--mono);font-size:.72rem;color:var(--faint);letter-spacing:.04em}
.home-faq{max-width:820px;margin:0 auto}

/* ---------- homepage v2: appliance image-cards ---------- */
.appl-ic{width:100%;max-width:64px;height:58px;display:block;margin:0 auto 2px}
.appl-ic .ic-b{fill:none;stroke:var(--ink);stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.appl-ic .ic-h{fill:none;stroke:var(--accent);stroke-width:2;stroke-linecap:round}
.appl-ic .ic-d{fill:var(--accent)}
.appl-ic .ic-dim{fill:none;stroke:var(--faint);stroke-width:1.2}
.browse-spec a{align-items:center;text-align:center;gap:5px;padding:16px 12px}
.browse-spec .w{font-size:1.02rem;margin-top:1px}

/* ---------- "what we measure" explainer cards ---------- */
.meas-cards{display:grid;grid-template-columns:1fr;gap:12px;margin:14px 0 0}
@media(min-width:720px){.meas-cards{grid-template-columns:repeat(3,1fr)}}
.meas-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:18px 18px 16px}
.meas-card h3{margin:.1em 0 .3em;font-size:1.02rem}
.meas-card p{margin:0;font-size:.9rem;color:var(--muted);line-height:1.5}
.meas-ic{width:88px;height:60px;display:block;margin:0 0 8px}
.meas-ic .ic-b{fill:none;stroke:var(--ink);stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.meas-ic .ic-a{fill:rgba(217,98,43,.15);stroke:var(--accent);stroke-width:2}
.meas-ic .ic-g{fill:var(--accent)}
.meas-ic .ic-dim{fill:none;stroke:var(--faint);stroke-width:1.3}
.meas-ic .ic-dash{fill:none;stroke:var(--faint);stroke-width:1;stroke-dasharray:4 3}
.meas-ic .ic-arc{fill:none;stroke:var(--accent);stroke-width:1.4;stroke-dasharray:3 3}

/* ---------- why-depth: 2-col copy + infographic ---------- */
.why-grid{display:grid;grid-template-columns:1fr;gap:24px;align-items:center;margin:8px 0 0}
@media(min-width:900px){.why-grid{grid-template-columns:1.05fr .95fr}}
.why-copy h2{margin-top:0}
.why-copy p:last-of-type{margin-bottom:0}
.why-fig{margin:0}
.why-cta{margin:.6em 0 0 !important;font-weight:600}
.dc-wall{stroke:var(--ink);stroke-width:2}
.dc-body{fill:var(--bg);stroke:var(--ink);stroke-width:1.5}
.dc-proj{fill:rgba(217,98,43,.16);stroke:var(--accent);stroke-width:1.5}
.dc-grip{fill:var(--accent)}
.dc-face{stroke:var(--faint);stroke-width:1;stroke-dasharray:4 3}
.dc-dim{stroke:var(--muted);stroke-width:1}
.dc-dimx{stroke:var(--accent);stroke-width:1.5}
.dc-t{fill:var(--muted);font-family:var(--mono);font-size:12px}
.dc-tx{fill:var(--accent);font-family:var(--mono);font-size:12px;font-weight:600}
.dc-lbl{fill:var(--faint);font-family:var(--mono);font-size:10px}

/* ---------- v3: a11y contrast + audit polish ---------- */
/* accent used as TEXT -> darker accent-h for WCAG AA (bright --accent stays for fills/borders) */
.browse-spec .w,.faq summary::after,.faq details[open] summary::after,.toc li::before,.toc a:hover,.steps-list>li::before,.related a:hover,.guide-list a:hover .g-t,.section-head a,.step .n{color:var(--accent-h)}
.btn-ghost{color:var(--accent-h)}
.btn-ghost:hover{border-color:var(--accent-h);color:var(--accent-h)}
.pager .page-numbers.current{background:var(--accent-h);border-color:var(--accent-h)}
.dc-tx{fill:var(--accent-h)}
.diagram figcaption{font-family:var(--sans);font-style:italic;text-transform:none}
/* visible keyboard focus everywhere (no-JS site -> keyboard nav matters) */
a:focus-visible,.btn:focus-visible,summary:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--accent-h);outline-offset:2px}
/* homepage: tool gets emphasis, diagram recedes, redundant header CTA hides */
.home .nav-cta{display:none}
.hero-lead .fit-tool{border-top:3px solid var(--accent)}
.hero-diagram{background:transparent;border-color:transparent;padding:0}
.stat-rd.key .n{color:var(--accent-h)}
/* break card monotony: measure cards sit on the engineering inch-grid */
.meas-cards{background-color:var(--bg);background-image:repeating-linear-gradient(0deg,rgba(31,36,33,.04) 0 1px,transparent 1px 24px),repeating-linear-gradient(90deg,rgba(31,36,33,.04) 0 1px,transparent 1px 24px);border:1px solid var(--line);border-radius:var(--r);padding:16px}
/* appliance icons read larger so they don't look like form checkboxes */
.appl-ic{max-width:84px;height:64px}

/* guides hub: titled cards with blurbs (replaces the plain title-only boxes) */
.guide-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:12px;margin:14px 0 26px}
.guide-cards a{display:flex;flex-direction:column;gap:4px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:16px 18px;color:var(--ink)}
.guide-cards a:hover{border-color:var(--accent);text-decoration:none}
.guide-cards .gc-t{font-family:var(--head);font-weight:700;font-size:1.05rem;letter-spacing:-.01em;line-height:1.25}
.guide-cards a:hover .gc-t{color:var(--accent-h)}
.guide-cards .gc-d{color:var(--muted);font-size:.9rem;line-height:1.45}

/* dataset study: horizontal bar chart */
.bchart .bar{fill:var(--accent)}
.bchart .bl{fill:var(--ink);font-family:var(--mono);font-size:12px}
.bchart .bn{fill:var(--muted);font-family:var(--mono);font-size:12px;font-weight:600}

/* ============ homepage v4 — audit fixes (Tier A/B/C): a11y, depth-tool, instrument lift + motion ============ */

/* C — skip link (WCAG 2.4.1 Bypass Blocks) */
.skip-link{position:absolute;left:-9999px;top:0;z-index:200;background:var(--ink);color:#fff;padding:10px 16px;border-radius:0 0 var(--r) 0;font-weight:600;font-size:.9rem;text-decoration:none}
.skip-link:focus,.skip-link:focus-visible{left:0;outline:2px solid var(--accent-h);outline-offset:2px}

/* C/B — stat band: reads as an instrument readout panel (not another white card); ENERGY STAR no longer clips */
.statband{border-radius:0;border-left:0;border-right:0;border-top:2px solid var(--ink);overflow:visible}
.stat-rd .n{font-size:1.9rem}
.stat-rd.es .n{font-family:var(--head);font-weight:800;font-size:1.02rem;letter-spacing:.02em;text-transform:none;overflow-wrap:anywhere;line-height:1.2}
@media(max-width:680px){.stat-rd .n{font-size:clamp(1.05rem,4.6vw,1.55rem)}}

/* B — hero diagram is now the protagonist: on graph paper, top-aligned, framed (reverses the v3 recede + centering) */
.hero-diagram{justify-content:flex-start;align-self:start;padding:20px 18px;border:1px solid var(--line);border-radius:var(--r);background-color:var(--surface);background-image:repeating-linear-gradient(0deg,rgba(31,36,33,.045) 0 1px,transparent 1px 24px),repeating-linear-gradient(90deg,rgba(31,36,33,.045) 0 1px,transparent 1px 24px)}

/* A — fit-tool polish: optional-depth hint + result note */
.fit-tool .opt{font-weight:400;color:var(--muted);font-size:.78rem;letter-spacing:0}
.fit-note{font-size:.9rem;color:var(--muted);line-height:1.5;margin:.2em 0 1em}
.fit-results-wrap{margin-top:.4em}

/* C — hover transitions everywhere (no instant snaps) + a subtle lift on the browse tiles */
.btn,.nav a,.nav-cta,.browse-spec a,.guide-list a,.guide-list .g-t,.guide-cards a,.related a,.faq summary,.site-footer a,.fit-tool input[type=number],.fit-tool select{transition:color .18s ease,background-color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease}
.browse-spec a:hover{transform:translateY(-2px);box-shadow:0 4px 14px rgba(31,36,33,.06)}

/* B — motion: instrument-flavoured, GPU-cheap, fully gated on prefers-reduced-motion (no CLS, no JS) */
@media (prefers-reduced-motion: no-preference){
  @keyframes sf-rise{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}
  @keyframes sf-draw{to{stroke-dashoffset:0}}
  @keyframes sf-fade{to{opacity:1}}
  /* entrance: hero + stat band settle in on load */
  .home .hero{animation:sf-rise .6s cubic-bezier(.2,.7,.3,1) both}
  .home .statband{animation:sf-rise .6s cubic-bezier(.2,.7,.3,1) .1s both}
  /* signature: the hero cutout diagram draws itself like a CAD plot, then labels fade in */
  .home .hero-diagram .box{stroke-dasharray:1120;stroke-dashoffset:1120;animation:sf-draw 1.1s ease .15s forwards}
  .home .hero-diagram .dl{stroke-dasharray:340;stroke-dashoffset:340;animation:sf-draw .9s ease .35s forwards}
  .home .hero-diagram .clr,.home .hero-diagram text{opacity:0;animation:sf-fade .55s ease .95s forwards}
}

/* ============ homepage v4.1 — deferred P2 polish ============ */
/* hero mono kicker — the signature measured numeral now leads above the fold */
.hero-kicker{font-family:var(--mono);font-size:.76rem;font-weight:600;letter-spacing:.09em;text-transform:uppercase;color:var(--accent-h);margin:0 0 10px}

/* depth-compare diagram: the +3" payoff is now the loudest beat, and the figure gets the larger column */
@media(min-width:900px){.why-grid{grid-template-columns:.9fr 1.1fr}}
.dc-proj{fill:rgba(217,98,43,.28)}
.dc-lead{stroke:var(--accent-h);stroke-width:1.5}
.dc-chip{fill:var(--accent-h)}
.dc-chip-t{fill:#fff;font-family:var(--mono);font-size:26px;font-weight:700}
.dc-chip-s{fill:var(--accent-h);font-family:var(--mono);font-size:11px;font-weight:600}

/* browse appliance icons read bolder, less like form checkboxes (freezer baseline aligned in the helper) */
.appl-ic .ic-b{stroke-width:2.4}
.appl-ic .ic-h{stroke-width:2.6}

/* footer carries the measurement motif: a ruler-tick top edge + mono column headers */
.site-footer{position:relative}
.site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:9px;background-image:repeating-linear-gradient(90deg,#3A463F 0 1px,transparent 1px 9px)}
.site-footer h3{font-family:var(--mono);font-size:.72rem;letter-spacing:.09em}

/* ============ homepage v4.2 — final deferred cleanup ============ */
/* hero H1 wraps naturally now (was a hard <br>) */
.hero h1{text-wrap:balance}

/* card monotony: browse-by-appliance is a connected spec-readout strip, not 5 floating tiles */
.browse-spec{gap:0;border:1px solid var(--line);border-radius:var(--r);overflow:hidden;background:var(--surface)}
.browse-spec a{border:0;border-radius:0;border-right:1px solid var(--line)}
.browse-spec a:hover{transform:none;box-shadow:none;background:var(--bg)}
@media(min-width:760px){.browse-spec a:last-child{border-right:0}}
@media(max-width:759px){.browse-spec a{border-bottom:1px solid var(--line)}.browse-spec a:nth-child(2n){border-right:0}.browse-spec a:last-child{border-bottom:0}}

/* stat band: "measured, never estimated" is now the focal cell */
.stat-rd.key{background:rgba(217,98,43,.07)}

/* one divider becomes a labeled measurement scale (varies the recurring rule) */
.rule-scale{display:flex;justify-content:space-between;align-items:flex-end;margin:34px 0;padding-bottom:9px;position:relative;border-bottom:1px solid var(--line)}
.rule-scale::after{content:"";position:absolute;left:0;right:0;bottom:0;height:8px;background-image:repeating-linear-gradient(90deg,var(--line) 0 1px,transparent 1px 9px)}
.rule-scale span{position:relative;font-family:var(--mono);font-size:.62rem;color:var(--faint);background:var(--bg);padding:0 3px;line-height:1}

/* FAQ marker: a rotating chevron instead of swapping +/- glyphs */
.faq summary::after{content:"";width:8px;height:8px;border:0;border-right:2px solid var(--accent-h);border-bottom:2px solid var(--accent-h);transform:rotate(45deg);transition:transform .2s ease;display:inline-block;margin-top:2px}
.faq details[open] summary::after{content:"";transform:rotate(-135deg)}

/* legibility + tap targets */
.section-head .sh-note{color:var(--muted);font-size:.76rem}
.nav a{padding:7px 3px}
.site-footer a{padding:6px 0}
.privacy-choices{display:block;border:0;background:none;color:inherit;font:inherit;font-size:.9rem;text-align:left;padding:6px 0;cursor:pointer;text-decoration:underline;text-underline-offset:2px}
.site-footer .privacy-choices:hover{color:#fff}
.privacy-banner{position:fixed;left:18px;right:18px;bottom:18px;z-index:100000;max-width:920px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;gap:24px;padding:18px 20px;background:var(--surface);color:var(--body);border:1px solid var(--line);border-radius:var(--r);box-shadow:0 16px 50px rgba(37,33,29,.18)}
.privacy-banner[hidden]{display:none}
.privacy-banner strong{display:block;color:var(--ink);margin-bottom:5px}
.privacy-banner p{margin:0;max-width:64ch;font-size:.9rem}
.privacy-actions{display:flex;gap:9px;flex:0 0 auto}
.privacy-actions .btn{border:1px solid var(--accent);cursor:pointer;white-space:nowrap}
.privacy-actions .secondary{background:transparent;color:var(--ink);border-color:var(--line)}
@media(max-width:680px){.privacy-banner{left:10px;right:10px;bottom:10px;display:block;padding:16px}.privacy-actions{margin-top:14px}.privacy-actions .btn{flex:1}}

/* FAQ block left-aligns its heading with the other sections (keeps the readable 820px measure) */
.home-faq{margin:0}

/* ad placeholder text meets the 3:1 non-text contrast floor */
.ad-slot .ad-fill{color:#8A8270}

/* --- Guides hub: full-width category index (page.php $is_hub) --- */
/* Drops the article rail; the .guide-cards auto-fit grid expands to 3-4 columns at full width. */
.is-hub>.lead{max-width:64ch}
.is-hub .section-head{margin-top:40px}
.is-hub .section-head h2{margin:0}
.is-hub .related{margin-top:12px}
/* wpautop inserts a <br> after each inline <a> card; as a grid item it steals a column.
   display:none removes it from the grid so the cards fill every track. */
.guide-cards br{display:none}