/* ============================================================================
   RULERLY - workshop design system
   Paper + graphite + tape-yellow. Space Grotesk (structure/numbers) +
   Source Serif 4 (reading). Ruler-tick motif is the one bold device.
   Follows the Size-Comparison brand playbook.
   ========================================================================== */

:root{
  --ink:#1C1E22;        /* graphite: body text, header, tables */
  --ink-soft:#4B5158;
  --paper:#FCFBF8;      /* page background */
  --panel:#F0EDE4;      /* conversion tables, callouts */
  --panel-2:#F5F2EA;
  --tape:#E3A008;       /* tape yellow: rules, exact figure, buttons - accent only */
  --tape-ink:#8A5B00;
  --steel:#2F5D62;      /* links, subheads, verified badge */
  --steel-soft:#3f7076;
  --rule:#D6D1C4;
  --clay:#A8422C;       /* tolerance warnings, varies-by-brand only */
  --clay-bg:#FBF2EF;
  --shadow:0 1px 0 rgba(0,0,0,.04), 0 8px 24px -18px rgba(28,30,34,.5);
  --maxw:1120px;
  --readw:720px;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--paper);color:var(--ink);
  font-family:"Source Serif 4",Georgia,serif;
  font-size:18px;line-height:1.66;-webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5,th,.mono,.chip,.btn,.brand,nav,.stat b,.eyebrow,.tag,.badge,.filter,.rk,.count,input,select,button{
  font-family:"Space Grotesk",Helvetica,Arial,sans-serif;
}
.mono-nums,td.num,.num{font-variant-numeric:tabular-nums}
a{color:var(--steel);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%;display:block}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.readwrap{max-width:var(--readw)}
.eyebrow{font-weight:600;font-size:13px;letter-spacing:.04em;text-transform:uppercase;color:var(--steel)}

/* ---- the ruler tick strip: the signature device -------------------------- */
.tickline{
  height:14px;
  background:repeating-linear-gradient(to right,var(--ink) 0 1px,transparent 1px 12px);
  background-position:bottom;background-size:100% 9px;background-repeat:repeat-x;
  position:relative;
}
.tickline::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--ink)}
.tick-tape{background:repeating-linear-gradient(to right,var(--tape) 0 1px,transparent 1px 12px)}
.tick-tape::after{background:var(--tape)}

/* ---- header -------------------------------------------------------------- */
.site-head{position:sticky;top:0;z-index:60;background:var(--panel);border-bottom:2px solid var(--ink)}
.site-head .bar{display:flex;align-items:center;gap:22px;height:66px}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink);font-weight:700;font-size:20px;letter-spacing:-.02em}
.brand:hover{text-decoration:none}
.brand small{display:block;font-size:11px;font-weight:500;color:var(--steel);letter-spacing:0;margin-top:-2px}
.brand .txt{display:flex;flex-direction:column;line-height:1.05}
.mark{width:26px;height:26px;flex:0 0 auto}
.nav{display:flex;gap:2px;margin-left:6px}
.nav a,.nav .has-menu>button{
  font-weight:600;font-size:14.5px;color:var(--ink);background:none;border:0;cursor:pointer;
  padding:9px 12px;border-radius:3px;display:inline-flex;align-items:center;gap:5px;
}
.nav a:hover,.nav .has-menu>button:hover{background:rgba(0,0,0,.05);text-decoration:none}
.has-menu{position:relative}
.megamenu{position:absolute;top:calc(100% + 8px);left:0;background:var(--paper);border:1px solid var(--rule);
  box-shadow:var(--shadow);padding:8px;min-width:280px;display:none;grid-template-columns:1fr 1fr;gap:2px;border-radius:4px}
.has-menu.open .megamenu{display:grid}
.megamenu a{display:flex;flex-direction:column;padding:9px 11px;font-size:14px;border-radius:3px}
.megamenu a span{font-family:"Source Serif 4",serif;font-weight:400;font-size:12px;color:var(--ink-soft)}
.megamenu a:hover{background:var(--panel);text-decoration:none}
.head-search{margin-left:auto;position:relative;display:flex;align-items:center;gap:8px;
  background:var(--paper);border:1px solid var(--rule);border-radius:3px;padding:7px 11px;min-width:210px}
.head-search svg{width:16px;height:16px;stroke:var(--ink-soft);fill:none;stroke-width:2}
.head-search input{border:0;background:none;outline:none;font-size:14px;width:100%;color:var(--ink)}
.head-search .results{position:absolute;top:calc(100% + 7px);left:0;right:0;background:var(--paper);
  border:1px solid var(--rule);box-shadow:var(--shadow);border-radius:4px;display:none;overflow:hidden;z-index:70}
.head-search .results.open{display:block}
.results a{display:flex;justify-content:space-between;gap:10px;padding:9px 13px;font-size:14px;color:var(--ink);border-bottom:1px solid var(--rule)}
.results a:last-child{border-bottom:0}
.results a:hover{background:var(--panel);text-decoration:none}
.results a span{color:var(--steel);font-family:"Space Grotesk";font-weight:600;font-variant-numeric:tabular-nums}
.burger{display:none;margin-left:auto;background:none;border:0;cursor:pointer}
.burger svg{width:26px;height:26px;stroke:var(--ink);fill:none;stroke-width:2}

.mobile-menu{display:none;background:var(--paper);border-bottom:2px solid var(--ink)}
.mobile-menu.open{display:block}
.mobile-menu .wrap{padding:14px 24px 22px}
.mobile-menu .grp{font-family:"Space Grotesk";font-weight:600;font-size:12px;text-transform:uppercase;letter-spacing:.05em;color:var(--steel);margin:14px 0 4px}
.mobile-menu a{display:block;padding:8px 0;color:var(--ink);font-family:"Space Grotesk";font-weight:500;border-bottom:1px solid var(--rule)}
.mobile-menu .m-search{position:relative;display:flex;align-items:center;gap:9px;background:var(--paper);
  border:1px solid var(--rule);border-radius:4px;padding:10px 13px;margin:4px 0 6px}
.mobile-menu .m-search svg{width:17px;height:17px;stroke:var(--ink-soft);fill:none;stroke-width:2;flex:0 0 auto}
.mobile-menu .m-search input{border:0;background:none;outline:none;font-size:15px;width:100%;color:var(--ink);font-family:"Space Grotesk"}
.mobile-menu .m-search .results{position:absolute;top:calc(100% + 5px);left:0;right:0;background:var(--paper);
  border:1px solid var(--rule);box-shadow:var(--shadow);border-radius:4px;display:none;overflow:hidden;z-index:70;max-height:280px;overflow-y:auto}
.mobile-menu .m-search .results.open{display:block}
.mobile-menu .m-search .results a{display:flex;justify-content:space-between;gap:10px;padding:9px 13px;font-size:14px;border-bottom:1px solid var(--rule)}
.mobile-menu .m-search .results a span{color:var(--steel);font-weight:600}

/* ---- buttons ------------------------------------------------------------- */
.btn{display:inline-flex;align-items:center;gap:8px;font-weight:600;font-size:15px;cursor:pointer;
  padding:11px 18px;border-radius:3px;border:2px solid var(--ink);background:var(--ink);color:var(--paper);text-decoration:none;transition:.12s}
.btn:hover{text-decoration:none;transform:translateY(-1px)}
.btn-tape{background:var(--tape);border-color:var(--tape);color:var(--ink)}
.btn-ghost{background:transparent;color:var(--ink)}
.btn-ghost:hover{background:var(--ink);color:var(--paper)}
.btn-sm{padding:8px 13px;font-size:13.5px}

/* ---- hero ---------------------------------------------------------------- */
.hero{background:var(--panel);border-bottom:2px solid var(--ink)}
.hero .inner{padding:56px 0 46px;max-width:820px}
.hero h1{font-weight:700;font-size:clamp(32px,5.4vw,52px);line-height:1.05;letter-spacing:-.02em;margin:14px 0 16px}
.hero .lede{font-size:19px;color:var(--ink-soft);max-width:60ch;margin:0 0 26px}
.hero .stats{display:flex;gap:34px;flex-wrap:wrap;margin-top:30px}
.hero .stat b{font-family:"Space Grotesk";font-weight:700;font-size:26px;display:block}
.hero .stat span{font-size:13px;color:var(--ink-soft)}

/* mini converter (hero + sticky) */
.converter{background:var(--paper);border:2px solid var(--ink);border-radius:4px;padding:16px;max-width:560px}
.converter .row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.converter label{font-family:"Space Grotesk";font-weight:600;font-size:12px;text-transform:uppercase;letter-spacing:.04em;color:var(--ink-soft);width:100%}
.converter input{flex:1 1 120px;font-family:"Space Grotesk";font-weight:600;font-size:20px;padding:10px 12px;border:1px solid var(--rule);border-radius:3px;background:var(--paper);color:var(--ink)}
.converter select{font-family:"Space Grotesk";font-weight:600;font-size:16px;padding:10px 12px;border:1px solid var(--rule);border-radius:3px;background:var(--paper);color:var(--ink)}
.converter .out{margin-top:12px;display:flex;gap:10px;flex-wrap:wrap}
.conv-pill{font-family:"Space Grotesk";font-weight:600;font-size:14px;background:var(--panel);border:1px solid var(--rule);border-radius:3px;padding:7px 11px}
.conv-pill b{color:var(--tape-ink)}

/* ---- section headings ---------------------------------------------------- */
.section{padding:52px 0}
.section-head{display:flex;align-items:baseline;justify-content:space-between;gap:16px;margin-bottom:6px}
.section-head h2{font-weight:700;font-size:clamp(22px,3vw,30px);letter-spacing:-.015em;margin:0}
.section-head a{font-family:"Space Grotesk";font-weight:600;font-size:14px}
.section .sub{color:var(--ink-soft);margin:0 0 22px;font-size:16px}
h2.rule-top{padding-top:8px;border-top:2px solid var(--ink);display:inline-block}

/* ---- silo tiles ---------------------------------------------------------- */
.tiles{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,225px),1fr));gap:14px}
.tile{display:flex;flex-direction:column;gap:6px;background:var(--paper);border:1px solid var(--ink);border-radius:4px;
  padding:18px;color:var(--ink);position:relative;overflow:hidden;transition:.12s}
.tile:hover{text-decoration:none;transform:translateY(-2px);box-shadow:var(--shadow)}
.tile .k{font-family:"Space Grotesk";font-weight:700;font-size:19px;letter-spacing:-.01em}
.tile .d{font-family:"Source Serif 4",serif;font-size:14px;color:var(--ink-soft)}
.tile .c{font-family:"Space Grotesk";font-weight:600;font-size:12px;color:var(--steel);margin-top:auto}
.tile::before{content:"";position:absolute;left:0;right:0;bottom:0;height:8px;
  background:repeating-linear-gradient(to right,var(--tape) 0 1px,transparent 1px 11px)}

/* ---- article cards ------------------------------------------------------- */
.grid{display:grid;gap:16px}
.g3{grid-template-columns:repeat(auto-fit,minmax(min(100%,290px),1fr))}
.g2{grid-template-columns:repeat(auto-fit,minmax(min(100%,340px),1fr))}
.card{display:flex;flex-direction:column;background:var(--paper);border:1px solid var(--rule);border-radius:4px;overflow:hidden;transition:.12s}
.card:hover{box-shadow:var(--shadow);transform:translateY(-2px)}
.card .thumb{aspect-ratio:3/2;background:var(--panel);position:relative;display:flex;align-items:center;justify-content:center;border-bottom:1px solid var(--rule);overflow:hidden}
/* branded figure always sits behind; a real photo (when added) covers it */
.card .thumb::after{content:attr(data-fig);position:absolute;z-index:0;font-family:"Space Grotesk";font-weight:700;font-size:34px;letter-spacing:-.02em;color:var(--steel);opacity:.85}
.card .thumb img{position:relative;z-index:1;width:100%;height:100%;object-fit:cover}
.card .thumb .rulertag{position:absolute;z-index:2;left:0;right:0;bottom:0;height:9px;
  background:repeating-linear-gradient(to right,var(--ink) 0 1px,transparent 1px 10px)}
.card .body{padding:15px 16px 17px;display:flex;flex-direction:column;gap:8px;flex:1}
.card .unit-chip{align-self:flex-start;font-family:"Space Grotesk";font-weight:600;font-size:11px;letter-spacing:.04em;
  text-transform:uppercase;color:var(--steel);background:var(--panel);border:1px solid var(--rule);border-radius:2px;padding:3px 7px}
.card h3{margin:0;font-size:19px;font-weight:700;letter-spacing:-.01em;line-height:1.2}
.card h3 a{color:var(--ink)}
.card p{margin:0;font-size:14.5px;color:var(--ink-soft);line-height:1.5}
.card .meta{margin-top:auto;display:flex;align-items:center;gap:8px;font-family:"Space Grotesk";font-size:12px;color:var(--ink-soft);padding-top:6px}
.card .count{font-weight:600;color:var(--tape-ink)}

/* ---- archive header + scale ribbon --------------------------------------- */
.archive-head{background:var(--panel);border-bottom:2px solid var(--ink);padding:40px 0 0}
.breadcrumb{font-family:"Space Grotesk";font-size:13px;color:var(--ink-soft);margin-bottom:12px}
.breadcrumb a{color:var(--steel)}
.archive-head h1{font-weight:700;font-size:clamp(28px,4.4vw,42px);letter-spacing:-.02em;margin:0 0 10px}
.archive-head .blurb{color:var(--ink-soft);max-width:64ch;margin:0 0 22px;font-size:17px}
.metrics{display:flex;gap:30px;flex-wrap:wrap;padding-bottom:26px}
.metric b{font-family:"Space Grotesk";font-weight:700;font-size:22px;display:block}
.metric span{font-size:12.5px;color:var(--ink-soft)}
.filters{display:flex;gap:8px;flex-wrap:wrap;margin:24px 0 28px}
.filter{font-family:"Space Grotesk";font-weight:600;font-size:13px;padding:7px 13px;border:1px solid var(--rule);border-radius:3px;color:var(--ink);background:var(--paper)}
.filter.active,.filter:hover{background:var(--ink);color:var(--paper);text-decoration:none;border-color:var(--ink)}
.empty{padding:40px;text-align:center;color:var(--ink-soft);background:var(--panel);border-radius:4px}

/* scale ribbon: a ruler with the archive's values placed on it */
.scale-ribbon{background:var(--paper);border:1px solid var(--ink);border-radius:4px;padding:26px 18px 34px;margin:6px 0 30px;position:relative;overflow-x:auto}
.scale-track{position:relative;height:60px;min-width:520px}
.scale-track .axis{position:absolute;left:0;right:0;bottom:14px;height:2px;background:var(--ink)}
.scale-track .axis::before,.scale-track .axis::after{content:"";position:absolute;bottom:0;top:-6px;width:2px;background:var(--ink)}
.scale-track .axis::before{left:0}.scale-track .axis::after{right:0}
.scale-pt{position:absolute;bottom:14px;transform:translateX(-50%);text-align:center}
.scale-pt .dot{width:11px;height:11px;border-radius:50%;background:var(--tape);border:2px solid var(--ink);margin:0 auto}
.scale-pt .lbl{font-family:"Space Grotesk";font-weight:600;font-size:12px;margin-top:6px;white-space:nowrap}
.scale-pt a{color:var(--ink)}
.scale-pt .lbl small{display:block;font-weight:500;color:var(--ink-soft);font-size:10.5px}

/* ---- article page -------------------------------------------------------- */
.article-hero{background:var(--panel);border-bottom:2px solid var(--ink);padding:36px 0 0}
.article-hero h1{font-weight:700;font-size:clamp(28px,4.6vw,44px);letter-spacing:-.02em;line-height:1.08;margin:6px 0 14px;max-width:20ch}
.byline{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-family:"Space Grotesk";font-size:13px;color:var(--ink-soft);padding-bottom:22px}
.byline .who{display:flex;align-items:center;gap:7px;font-weight:600;color:var(--ink)}
.byline .dot{width:24px;height:24px;border-radius:50%;background:var(--steel);color:#fff;display:grid;place-items:center;font-size:11px;font-weight:700}
.byline .sep{opacity:.4}
.byline b{color:var(--ink)}

.article-body{display:grid;grid-template-columns:1fr 300px;gap:44px;padding:34px 0 60px;align-items:start}
.article-body>*{min-width:0}
.article-main{min-width:0}
.converter,.converter input,.converter select{min-width:0}
.tool-panel .row{flex-wrap:wrap}
.article-main h2{font-weight:700;font-size:26px;letter-spacing:-.015em;margin:44px 0 12px;padding-top:14px;border-top:1px solid var(--rule)}
.article-main h2:first-child{border-top:0;margin-top:0}
.article-main h3{font-weight:600;font-size:20px;color:var(--steel);margin:26px 0 8px}
.article-main p{margin:0 0 16px;max-width:68ch}
.article-main ul,.article-main ol{max-width:68ch;padding-left:22px}
.article-main li{margin-bottom:7px}

/* answer block */
.answer-block{background:var(--paper);border:2px solid var(--ink);border-radius:4px;padding:22px 24px;margin:0 0 22px}
.answer-block .q{font-family:"Space Grotesk";font-weight:600;font-size:14px;color:var(--ink-soft);margin:0 0 6px}
.answer-block .fig{font-family:"Space Grotesk";font-weight:700;font-size:clamp(30px,5vw,44px);line-height:1;letter-spacing:-.02em;
  display:inline-block;background-image:linear-gradient(var(--tape),var(--tape));background-size:100% 4px;background-position:0 100%;background-repeat:no-repeat;padding-bottom:2px}
.answer-block .units{display:flex;gap:14px;flex-wrap:wrap;margin:16px 0 4px}
.answer-block .units div{font-family:"Space Grotesk"}
.answer-block .units small{display:block;font-size:11px;text-transform:uppercase;letter-spacing:.04em;color:var(--ink-soft);font-weight:600}
.answer-block .units b{font-size:18px;font-weight:700;font-variant-numeric:tabular-nums}
.answer-block .verified{font-family:"Space Grotesk";font-size:12px;color:var(--steel);font-weight:600;margin-top:12px;display:inline-flex;gap:6px;align-items:center}
.answer-block .verified svg{width:14px;height:14px;fill:var(--steel)}

.snippet{background:var(--panel);border-left:4px solid var(--tape);padding:16px 20px;margin:0 0 22px;font-size:16px}

/* data tables */
table.data{width:100%;border-collapse:collapse;margin:14px 0 26px;font-family:"Space Grotesk";font-weight:500;font-size:14.5px}
table.data th{text-align:left;background:var(--ink);color:var(--paper);font-weight:600;font-size:12.5px;padding:10px 12px;letter-spacing:.02em}
table.data td{padding:10px 12px;border-bottom:1px solid var(--rule);vertical-align:top;font-variant-numeric:tabular-nums}
table.data tr:nth-child(even) td{background:var(--panel-2)}
table.data td.r,table.data th.r{text-align:right}
.tscroll{overflow-x:auto;-webkit-overflow-scrolling:touch;max-width:100%;margin:14px 0 26px}
.tscroll table.data{margin:0}
.tscroll table.data td,.tscroll table.data th{white-space:nowrap}
.copybtn{float:right;font-family:"Space Grotesk";font-weight:600;font-size:12px;cursor:pointer;background:var(--panel);border:1px solid var(--rule);border-radius:3px;padding:5px 10px;color:var(--ink)}
.copybtn:hover{background:var(--ink);color:var(--paper)}

/* item cards */
.items{margin:8px 0}
/* item = full-width image on top, then heading, then body (image goes at the top, not the side) */
.item{display:block;border-bottom:1px solid var(--rule);padding:24px 0}
.item:last-child{border-bottom:0}
.item-figure{position:relative;width:100%;aspect-ratio:2/1;background:var(--panel);border:1px solid var(--rule);border-radius:8px;overflow:hidden;margin-bottom:14px;display:flex;align-items:center;justify-content:center}
.item-figure::after{content:attr(data-fig);position:absolute;z-index:0;font-family:"Space Grotesk";font-weight:700;font-size:clamp(26px,5vw,40px);color:var(--steel);opacity:.85;text-align:center;padding:0 14px}
.item-figure img{position:relative;z-index:1;width:100%;height:100%;object-fit:cover}
.item-figure .item-num{position:absolute;z-index:2;top:9px;left:10px;font-family:"Space Grotesk";font-weight:700;font-size:12px;color:#fff;background:rgba(28,30,34,.6);border-radius:999px;padding:2px 10px}
.item-figure .rulertag{position:absolute;z-index:2;left:0;right:0;bottom:0;height:9px;background:repeating-linear-gradient(to right,var(--ink) 0 1px,transparent 1px 10px)}
.item-head{display:flex;align-items:baseline;gap:10px;flex-wrap:wrap;margin-bottom:6px}
.item-head h3{margin:0;font-size:20px}
.item .fig{font-family:"Space Grotesk";font-weight:700;font-size:15px;color:var(--tape-ink);font-variant-numeric:tabular-nums}
.item .tol{font-family:"Space Grotesk";font-weight:600;font-size:12px;color:var(--clay);background:var(--clay-bg);border-radius:2px;padding:2px 7px}
.src-chip{font-family:"Space Grotesk";font-weight:600;font-size:11px;letter-spacing:.02em;color:var(--steel);border:1px solid var(--steel);border-radius:2px;padding:2px 7px}
.item > p{margin:0;font-size:16px}

/* size-comparison bars */
.bars{margin:16px 0 8px}
.markline{position:relative;height:16px;margin-bottom:6px}
.markline .mark{position:absolute;top:0;transform:translateX(-50%);font-family:"Space Grotesk";font-size:12px;font-weight:700;color:var(--tape-ink);white-space:nowrap}
.bar{display:grid;grid-template-columns:130px 1fr 74px;align-items:center;gap:12px;padding:7px 0;border-bottom:1px solid var(--rule)}
.bar:last-child{border-bottom:0}
.bar .lbl{font-size:14px;font-weight:600;font-family:"Space Grotesk";white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.bar .track{background:var(--panel);border-radius:999px;height:14px;overflow:hidden}
.bar .fill{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,var(--steel),var(--tape))}
.bar .val{font-size:13px;font-weight:700;font-family:"Space Grotesk";text-align:right;font-variant-numeric:tabular-nums}

/* dark method box */
.method{background:#1C1E22;color:#EAE7DE;border-radius:6px;padding:22px 24px;margin:6px 0 8px}
.method p{color:#EAE7DE}
.method p{margin:0 0 10px;font-size:15.5px;max-width:none}
.method p:last-child{margin-bottom:0}
.method b{color:#fff}
.method .src{font-size:13px;color:#A7A296;border-top:1px solid #34373d;padding-top:12px;margin-top:12px}
.method .src a{color:var(--tape)}

/* cite this page */
.cite{background:var(--panel);border:1px solid var(--rule);border-radius:6px;padding:16px 18px;margin:24px 0}
.cite h4{margin:0 0 10px;font-size:13px;text-transform:uppercase;letter-spacing:.05em;color:var(--ink-soft);font-family:"Space Grotesk"}
.cite-row{display:flex;gap:12px;align-items:flex-start}
.cite code{flex:1;background:var(--paper);border:1px solid var(--rule);border-radius:4px;padding:10px 12px;font-size:13px;color:var(--ink);word-break:break-word}
.cite .copybtn{position:static;float:none;flex:0 0 auto}

/* callout / warn */
.callout{background:var(--panel);border-left:4px solid var(--tape);padding:16px 20px;margin:22px 0;display:flex;gap:12px}
.callout .ic{flex:0 0 auto;font-size:19px;line-height:1.4}
.callout.note{border-left-color:var(--steel)}
.callout p:last-child{margin-bottom:0}
.callout div p{margin:0}
.warnbox{background:var(--clay-bg);border-left:4px solid var(--clay);padding:15px 20px;margin:22px 0}
.warnbox b{font-family:"Space Grotesk";color:var(--clay)}

/* inline TOC pills */
.toc-pills{display:flex;flex-wrap:wrap;gap:8px;background:var(--panel);border:1px solid var(--rule);border-radius:6px;padding:14px 16px;margin:20px 0 26px}
.toc-pills a{font-family:"Space Grotesk";font-weight:600;font-size:13.5px;background:var(--paper);border:1px solid var(--rule);border-radius:999px;padding:5px 12px;color:var(--ink)}
.toc-pills a:hover{border-color:var(--tape);color:var(--tape-ink);text-decoration:none}

/* faq */
.faq details{border:1px solid var(--rule);border-radius:3px;margin-bottom:10px;background:var(--paper)}
.faq summary{cursor:pointer;font-family:"Space Grotesk";font-weight:600;font-size:16px;padding:14px 16px;list-style:none;display:flex;justify-content:space-between;gap:12px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";color:var(--tape-ink);font-weight:700;font-size:20px;line-height:1}
.faq details[open] summary::after{content:"\2212"}
.faq .a{padding:0 16px 16px;font-size:16px;color:var(--ink-soft)}

.sources{padding-left:20px;font-size:15px}
.sources li{margin-bottom:8px}

/* author + sibling strip */
.authorbox{display:flex;gap:16px;align-items:flex-start;background:var(--panel);border:1px solid var(--rule);border-radius:6px;padding:18px 20px;margin:30px 0}
.authorbox .av{width:54px;height:54px;flex:0 0 auto;border-radius:50%;background:var(--steel);color:#fff;display:grid;place-items:center;font-family:"Space Grotesk";font-weight:700;font-size:19px;text-decoration:none}
.authorbox .av:hover{text-decoration:none;filter:brightness(1.08)}
.authorbox .ab-body{min-width:0}
.authorbox h4{margin:0 0 5px;font-size:16px;font-family:"Space Grotesk"}
.authorbox h4 a{color:var(--ink)}
.authorbox h4 span{font-weight:500;color:var(--ink-soft);font-size:13px}
.authorbox p{margin:0;font-size:14.5px;color:var(--ink-soft)}
.authorbox .rev{font-family:"Space Grotesk";font-size:12.5px;color:var(--steel);margin-top:10px;font-weight:600;display:flex;align-items:center;gap:6px;flex-wrap:wrap}
.authorbox .rev svg{width:14px;height:14px;fill:var(--steel);flex:0 0 auto}
.rel-blog{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,240px),1fr));gap:10px}
.rel-blog a{display:block;background:var(--paper);border:1px solid var(--rule);border-radius:5px;padding:12px 14px;color:var(--ink)}
.rel-blog a:hover{border-color:var(--tape);text-decoration:none}
.rel-blog b{display:block;font-family:"Space Grotesk";font-size:14.5px;line-height:1.3;margin-bottom:4px}
.rel-blog span{font-family:"Space Grotesk";font-size:11.5px;text-transform:uppercase;letter-spacing:.04em;color:var(--steel)}
/* blog post prose */
.blogpost{padding:34px 0 50px}
.blogpost h2{font-weight:700;font-size:26px;letter-spacing:-.015em;margin:34px 0 12px;padding-top:14px;border-top:1px solid var(--rule)}
.blogpost h3{font-weight:600;font-size:20px;color:var(--steel);margin:24px 0 8px}
.blogpost p,.blogpost li{max-width:70ch}
.blogpost ul{padding-left:22px}
.blogpost blockquote{border-left:4px solid var(--tape);background:var(--panel);margin:22px 0;padding:14px 20px;font-size:18px}
/* author profile page */
.author-card{display:flex;gap:26px;align-items:flex-start;background:var(--panel);border:1px solid var(--rule);border-radius:8px;padding:26px;margin-bottom:34px}
.author-av{width:112px;height:112px;flex:0 0 auto;border-radius:50%;overflow:hidden;background:var(--steel);position:relative;display:flex;align-items:center;justify-content:center}
.author-av::after{content:attr(data-fig);position:absolute;z-index:0;color:#fff;font-family:"Space Grotesk";font-weight:700;font-size:38px}
.author-av img{position:relative;z-index:1;width:100%;height:100%;object-fit:cover}
.author-info{min-width:0}
.author-info h1{font-weight:700;font-size:clamp(26px,4vw,36px);letter-spacing:-.02em;margin:0 0 4px}
.author-info .role{font-family:"Space Grotesk";font-weight:600;color:var(--steel);margin:0 0 14px}
.author-info h4{font-family:"Space Grotesk";font-size:12px;text-transform:uppercase;letter-spacing:.05em;color:var(--ink-soft);margin:18px 0 8px}
.creds{margin:0 0 8px;padding-left:20px}
.creds li{margin-bottom:5px;font-size:15px}
.tagchips{display:flex;flex-wrap:wrap;gap:7px;margin:12px 0}
.tagchip{font-family:"Space Grotesk";font-weight:600;font-size:12px;background:var(--paper);border:1px solid var(--rule);border-radius:999px;padding:5px 11px;color:var(--steel)}
.author-links{display:flex;gap:14px;margin-top:12px;font-family:"Space Grotesk";font-weight:600;font-size:14px}
/* team cards (about page) */
.team{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,240px),1fr));gap:14px;margin:18px 0 22px}
.team-card{display:flex;gap:14px;align-items:center;background:var(--panel);border:1px solid var(--rule);border-radius:6px;padding:16px 18px;color:var(--ink)}
.team-card:hover{border-color:var(--tape);text-decoration:none}
.team-card .ta{width:52px;height:52px;flex:0 0 auto;border-radius:50%;background:var(--steel);display:grid;place-items:center;color:#fff;font-family:"Space Grotesk";font-weight:700;font-size:18px}
.team-card .ta::after{content:attr(data-fig)}
.team-card .tn{font-family:"Space Grotesk";font-weight:700;font-size:16px;display:flex;flex-direction:column}
.team-card .tn small{font-weight:500;color:var(--ink-soft);font-size:12.5px;margin-top:2px}
.sibling-strip{border-top:2px solid var(--ink);padding-top:18px;margin-top:16px}
.sibling-strip h4{font-family:"Space Grotesk";font-size:13px;text-transform:uppercase;letter-spacing:.05em;color:var(--ink-soft);margin:0 0 12px}
.sib-list{display:flex;gap:10px;flex-wrap:wrap}
.sib{font-family:"Space Grotesk";font-weight:600;font-size:14px;border:1px solid var(--rule);border-radius:3px;padding:9px 13px;color:var(--ink);background:var(--paper)}
.sib:hover{background:var(--ink);color:var(--paper);text-decoration:none}
.sib small{display:block;font-weight:500;color:var(--ink-soft);font-size:11px}
.sib:hover small{color:#cfcabd}

/* aside / sticky */
aside .sticky{position:sticky;top:88px}
.aside-conv{background:var(--paper);border:2px solid var(--ink);border-radius:4px;padding:16px;margin-bottom:18px}
.aside-conv h4{margin:0 0 10px;font-size:14px}
.toc{background:var(--panel);border:1px solid var(--rule);border-radius:4px;padding:16px 18px}
.toc h4{margin:0 0 10px;font-size:13px;text-transform:uppercase;letter-spacing:.05em;color:var(--ink-soft)}
.toc ol{margin:0;padding-left:18px;font-family:"Space Grotesk";font-size:14px}
.toc li{margin-bottom:6px}
.toc a{color:var(--ink)}

/* ---- tool page ----------------------------------------------------------- */
.tool-panel{background:var(--paper);border:2px solid var(--ink);border-radius:5px;padding:24px;margin:0 0 30px}
.tool-panel .row{display:flex;gap:12px;flex-wrap:wrap;align-items:flex-end}
.tool-out{margin-top:8px}
.tool-hit{display:flex;gap:14px;align-items:center;background:var(--paper);border:1px solid var(--rule);border-radius:4px;padding:12px 14px;margin-bottom:10px}
.tool-hit .th{width:74px;height:56px;flex:0 0 auto;background:var(--panel);border:1px solid var(--rule);border-radius:3px;display:grid;place-items:center;font-family:"Space Grotesk";font-weight:700;color:var(--steel);overflow:hidden}
.tool-hit .th img{width:100%;height:100%;object-fit:cover}
.tool-hit .nm{font-family:"Space Grotesk";font-weight:700;font-size:16px}
.tool-hit .nm span{display:block;font-weight:500;font-size:13px;color:var(--ink-soft)}
.tool-hit .vl{margin-left:auto;text-align:right;font-family:"Space Grotesk";font-weight:700;font-variant-numeric:tabular-nums;color:var(--tape-ink)}
.tool-hit .vl small{display:block;font-weight:500;color:var(--ink-soft)}

/* ---- generic page (methodology/about) ------------------------------------ */
.page-hero{background:var(--panel);border-bottom:2px solid var(--ink);padding:44px 0}
.page-hero h1{font-weight:700;font-size:clamp(28px,4.6vw,44px);letter-spacing:-.02em;margin:6px 0 10px}
.page-hero p{color:var(--ink-soft);max-width:64ch;margin:0;font-size:17px}
.prose{padding:40px 0 60px}
.prose h2{font-weight:700;font-size:26px;letter-spacing:-.015em;margin:36px 0 10px;padding-top:14px;border-top:1px solid var(--rule)}
.prose h3{font-weight:600;font-size:19px;color:var(--steel);margin:24px 0 8px}
.prose p,.prose li{max-width:70ch}

/* ---- footer -------------------------------------------------------------- */
.site-foot{background:var(--ink);color:#CFCABD;margin-top:60px}
.site-foot .cols{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px;padding:46px 0 30px}
.site-foot .brand{color:var(--paper)}
.site-foot .brand small{color:var(--tape)}
.site-foot .about{font-size:14px;color:#A7A296;max-width:34ch;margin:14px 0 0}
.site-foot h4{font-family:"Space Grotesk";font-size:13px;text-transform:uppercase;letter-spacing:.05em;color:#fff;margin:0 0 12px}
.site-foot a{display:block;color:#CFCABD;font-size:14px;padding:5px 0}
.site-foot a:hover{color:var(--tape)}
.foot-legal{border-top:1px solid #34373d;padding:16px 0;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;font-size:13px;color:#8f8b80}
.foot-note{background:#15171A;border-top:1px solid #34373d}
.foot-note .wrap{padding:14px 24px;font-size:13px;color:#A7A296}
.foot-note b{font-family:"Space Grotesk";color:var(--tape)}

/* ---- WordPress-style post furniture -------------------------------------- */
/* featured image */
.post-featured{position:relative;aspect-ratio:16/9;background:var(--panel);border:1px solid var(--rule);border-radius:8px;overflow:hidden;margin:8px 0 26px;display:flex;align-items:center;justify-content:center}
.post-featured::after{content:attr(data-fig);position:absolute;z-index:0;font-family:"Space Grotesk";font-weight:700;font-size:clamp(28px,6vw,52px);color:var(--steel);opacity:.85}
.post-featured img{position:relative;z-index:1;width:100%;height:100%;object-fit:cover}
.post-featured .rulertag{position:absolute;z-index:2;left:0;right:0;bottom:0;height:9px;background:repeating-linear-gradient(to right,var(--ink) 0 1px,transparent 1px 10px)}

/* share bar */
.sharebar{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin:16px 0 4px}
.sharebar .sh-label{font-family:"Space Grotesk";font-weight:600;font-size:12px;text-transform:uppercase;letter-spacing:.05em;color:var(--ink-soft);margin-right:2px}
.sh{width:34px;height:34px;display:inline-grid;place-items:center;border:1px solid var(--rule);border-radius:8px;background:var(--paper);color:var(--ink);cursor:pointer;transition:.12s}
.sh:hover{background:var(--ink);color:var(--paper);border-color:var(--ink);text-decoration:none;transform:translateY(-1px)}
.sh svg{width:16px;height:16px;fill:currentColor}
.sh.sc svg{fill:none;stroke:currentColor}
.sh.sc.ok{background:var(--steel);color:#fff;border-color:var(--steel)}

/* tags */
.post-tags{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin:26px 0 4px;border-top:1px solid var(--rule);padding-top:20px}
.post-tags .pt-label{font-family:"Space Grotesk";font-weight:600;font-size:12px;text-transform:uppercase;letter-spacing:.05em;color:var(--ink-soft)}
.ptag{font-family:"Space Grotesk";font-weight:600;font-size:13px;background:var(--panel);border:1px solid var(--rule);border-radius:999px;padding:5px 12px;color:var(--steel)}

/* previous / next */
.postnav{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:26px 0}
.pn{display:block;background:var(--paper);border:1px solid var(--rule);border-radius:6px;padding:14px 16px;color:var(--ink)}
.pn:hover{border-color:var(--tape);text-decoration:none;box-shadow:var(--shadow)}
.pn span{font-family:"Space Grotesk";font-weight:600;font-size:12px;text-transform:uppercase;letter-spacing:.04em;color:var(--steel);display:block;margin-bottom:5px}
.pn b{font-family:"Space Grotesk";font-size:15px;line-height:1.3;display:block}
.pn.next{text-align:right}

/* newsletter */
.newsletter{display:flex;gap:22px;align-items:center;justify-content:space-between;flex-wrap:wrap;background:var(--panel);border:2px solid var(--ink);border-radius:8px;padding:24px 26px;margin:30px 0}
.newsletter .nl-copy{max-width:42ch}
.newsletter h3{margin:0 0 6px;font-size:20px}
.newsletter p{margin:0;color:var(--ink-soft);font-size:15px}
.nlform{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.nlform input{font-family:"Space Grotesk";font-size:15px;padding:12px 14px;border:1px solid var(--rule);border-radius:6px;background:var(--paper);color:var(--ink);min-width:0;flex:1 1 200px}
.nlform .nlmsg{font-family:"Space Grotesk";font-size:13px;color:var(--steel);font-weight:600;width:100%}

/* comments */
.comments{border-top:2px solid var(--ink);margin-top:34px;padding-top:22px}
.comments h2{font-weight:700;font-size:24px;letter-spacing:-.015em;margin:0 0 16px}
.comments .ccount{color:var(--ink-soft);font-weight:500}
.cform{background:var(--panel);border:1px solid var(--rule);border-radius:8px;padding:18px;margin-bottom:22px}
.cform .crow{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:12px}
.cform input,.cform textarea{font-family:"Source Serif 4",serif;font-size:15px;padding:11px 13px;border:1px solid var(--rule);border-radius:6px;background:var(--paper);color:var(--ink);width:100%;min-width:0}
.cform .crow input{flex:1 1 180px}
.cform textarea{min-height:96px;resize:vertical;margin-bottom:12px}
.cform .cnote{font-family:"Space Grotesk";font-size:12px;color:var(--ink-soft);margin:10px 0 0}
.clist{display:flex;flex-direction:column;gap:14px}
.cempty{color:var(--ink-soft);font-style:italic}
.citem{display:flex;gap:12px;align-items:flex-start}
.citem .cav{width:38px;height:38px;flex:0 0 auto;border-radius:50%;background:var(--steel);color:#fff;display:grid;place-items:center;font-family:"Space Grotesk";font-weight:700;font-size:15px}
.citem .chead{display:flex;align-items:baseline;gap:10px;margin-bottom:2px}
.citem .chead b{font-family:"Space Grotesk";font-size:15px}
.citem .chead span{font-family:"Space Grotesk";font-size:12px;color:var(--ink-soft)}
.citem p{margin:0;font-size:15.5px}

/* bottom-of-post sections: clear separation + gaps, h3 headings */
.post-block{margin-top:44px;padding-top:26px;border-top:1px solid var(--rule)}
.post-block > h3{font-family:"Space Grotesk";font-weight:700;font-size:20px;margin:0 0 16px;letter-spacing:-.01em}
.author-sec .authorbox{margin:0}
.comments.post-block{margin-top:52px;padding-top:28px;border-top:2px solid var(--ink)}
.comments.post-block > h3{font-size:22px}

/* "You might also like" - 3 small cards */
.ymal-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,190px),1fr));gap:14px}
.mini{display:flex;flex-direction:column;background:var(--paper);border:1px solid var(--rule);border-radius:6px;overflow:hidden;color:var(--ink);transition:.12s}
.mini:hover{border-color:var(--tape);text-decoration:none;box-shadow:var(--shadow);transform:translateY(-2px)}
.mini-thumb{position:relative;aspect-ratio:16/9;background:var(--panel);border-bottom:1px solid var(--rule);display:flex;align-items:center;justify-content:center;overflow:hidden}
.mini-thumb::after{content:attr(data-fig);position:absolute;z-index:0;font-family:"Space Grotesk";font-weight:700;font-size:18px;color:var(--steel)}
.mini-thumb img{position:relative;z-index:1;width:100%;height:100%;object-fit:cover}
.mini-b{padding:10px 12px 12px;display:flex;flex-direction:column;gap:5px}
.mini-cat{font-family:"Space Grotesk";font-weight:600;font-size:10.5px;text-transform:uppercase;letter-spacing:.04em;color:var(--steel)}
.mini-b b{font-family:"Space Grotesk";font-weight:600;font-size:13.5px;line-height:1.25}

/* brand logo (image if present, else the tick mark + wordmark fallback) */
.brand-logo{height:34px;width:auto;display:block}
.site-foot .brand-logo{height:32px}
.brand-fallback{display:flex;align-items:center;gap:10px}
.brand:has(img.brand-logo) .brand-fallback{display:none}

/* section image - full width, on top of the section (below its heading) */
.sec-figure{position:relative;width:100%;aspect-ratio:2/1;background:var(--panel);border:1px solid var(--rule);border-radius:8px;overflow:hidden;margin:6px 0 16px;display:flex;align-items:center;justify-content:center}
.sec-figure::after{content:attr(data-fig);position:absolute;z-index:0;font-family:"Space Grotesk";font-weight:700;font-size:clamp(28px,6vw,46px);color:var(--steel);opacity:.85}
.sec-figure img{position:relative;z-index:1;width:100%;height:100%;object-fit:cover}
.sec-figure .rulertag{position:absolute;z-index:2;left:0;right:0;bottom:0;height:9px;background:repeating-linear-gradient(to right,var(--ink) 0 1px,transparent 1px 10px)}

/* bold dimension / stat line (e.g. "Legal paper dimensions: 8.5 × 14 inches") */
.stat-line{background:var(--panel);border-left:4px solid var(--tape);padding:11px 16px;margin:16px 0;font-family:"Space Grotesk";font-size:16px}
.stat-line span{color:var(--ink-soft);font-weight:600}
.stat-line b{color:var(--tape-ink);font-weight:700}

/* quick-facts bullet box (scannable key points near the top) */
.keypoints{background:var(--panel);border:1px solid var(--rule);border-left:4px solid var(--steel);border-radius:4px;margin:0 0 24px;padding:16px 22px 16px 40px}
.keypoints li{margin:0 0 7px;font-size:16px}
.keypoints li:last-child{margin-bottom:0}
.keypoints li b{font-family:"Space Grotesk";color:var(--tape-ink)}
/* in-section bullet lists (support sections: intro paragraphs + bullets + table) */
.post-bullets{padding-left:22px;margin:2px 0 18px;max-width:68ch}
.post-bullets li{margin-bottom:8px;font-size:16px}
.post-bullets li b{font-family:"Space Grotesk";color:var(--tape-ink)}

/* ---- responsive ---------------------------------------------------------- */
/* card + tile grids flow fluidly via auto-fit minmax above - no per-width rules needed */

/* header: swap the full nav for the burger before it can crowd (~1000px), but keep
   the search bar visible in the header as its own full-width row (not inside the menu) */
@media (max-width:1000px){
  .nav{display:none}
  .burger{display:block}
  .site-head .bar{flex-wrap:wrap;height:auto;padding:11px 0;row-gap:11px}
  .head-search{display:flex;order:3;flex:1 0 100%;margin-left:0;min-width:0}
}
/* article + 4-col footer collapse on tablet */
@media (max-width:900px){
  .article-body{grid-template-columns:1fr;gap:24px}
  aside{order:-1}
  aside .sticky{position:static}
  .toc{display:none}
  .site-foot .cols{grid-template-columns:1fr 1fr;gap:26px}
}
@media (max-width:680px){
  body{font-size:17px}
  .hero .inner{padding:38px 0 34px}
  .section{padding:40px 0}
  .article-hero h1{max-width:none}
  .bar{grid-template-columns:92px 1fr 58px;gap:8px}
  .bar .lbl{font-size:12.5px}
  .author-card{flex-direction:column;gap:16px}
  .author-av{width:88px;height:88px}
  .cite-row{flex-direction:column}
  .postnav{grid-template-columns:1fr}
  .pn.next{text-align:left}
  .newsletter{padding:20px}
  .sec-thumb{width:76px;height:60px}
  .sec-head{gap:12px}
}
@media (max-width:520px){
  .site-foot .cols{grid-template-columns:1fr;gap:22px}
  .byline{gap:7px}
}

/* ---- dark mode ----------------------------------------------------------- */
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    --ink:#E8E5DE;--ink-soft:#A7A296;--paper:#15171A;--panel:#1E2125;--panel-2:#22262b;
    --tape:#E3A008;--tape-ink:#E9B93f;--steel:#4E8A90;--steel-soft:#5fa0a6;--rule:#34373d;
    --clay:#D07358;--clay-bg:#2a1f1c;
  }
  :root:not([data-theme="light"]) .btn{background:var(--tape);border-color:var(--tape);color:#15171A}
  :root:not([data-theme="light"]) .btn-ghost{background:transparent;color:var(--ink);border-color:var(--ink)}
  :root:not([data-theme="light"]) table.data th{background:#2b2f34;color:#EAE7DE}
  :root:not([data-theme="light"]) .site-foot{background:#0f1113}
}