:root{
  --navy:#103a63;
  --navy-dark:#0a2946;
  --navy-deep:#081f36;
  --navy-soft:#1f5f95;
  --paper:#f7f1e3;
  --paper-strong:#fffaf0;
  --paper-deep:#ede2c8;
  --cream:#fcf7ee;
  --card:#fffdf8;
  --line:#d2c4ac;
  --line-dark:#19344d;
  --text:#1f262d;
  --muted:#56616b;
  --orange:#e18d1f;
  --orange-dark:#bd6c0f;
  --gold:#f1c54e;
  --green:#5d8e43;
  --shadow:0 10px 24px rgba(7,25,43,.10);
  --shadow-lg:0 18px 40px rgba(5,18,32,.18);
  --radius:24px;
  --radius-sm:16px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  color:var(--text);
  font-family:Inter,"Segoe UI",Tahoma,Geneva,Verdana,sans-serif;
  line-height:1.6;
  background:
    radial-gradient(circle at top center, rgba(60,123,179,.34), transparent 34%),
    linear-gradient(180deg, var(--navy) 0, var(--navy-dark) 260px, var(--navy-deep) 100%);
}
a{color:var(--navy-dark);text-decoration:none}
a:hover{text-decoration:underline;text-underline-offset:3px}
img{max-width:100%;height:auto;display:block}
.wrap{width:min(1560px, calc(100% - 32px));margin:0 auto}
.skip-link{position:absolute;left:-9999px;top:0}
.skip-link:focus{left:12px;top:12px;background:#fff;padding:10px 12px;border-radius:10px;z-index:999}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
[hidden]{display:none!important}
.muted{color:var(--muted)}
.eyebrow{margin:0 0 10px;font-size:.8rem;font-weight:900;letter-spacing:.16em;text-transform:uppercase;color:var(--navy-soft)}
.ink-blue{color:var(--navy-soft)}
.ink-green{color:var(--green)}
.ink-orange{color:var(--orange-dark)}

h1,h2,h3{font-family:"Trebuchet MS",Inter,"Segoe UI",sans-serif;line-height:1.08;letter-spacing:-.02em;color:#12263a}
h1{font-size:clamp(2.1rem,3.8vw,3.45rem);margin:.06em 0 .18em}
h2{font-size:clamp(1.45rem,2vw,2rem);margin:1.1em 0 .4em}
h3{font-size:1.2rem;margin:1em 0 .35em}
p,ul,ol{margin:.6em 0 1em}
.lede{font-size:1.06rem;color:#33414c}

.site-header{position:relative;z-index:40;color:#fff;padding:16px 0 0}
.header-top{padding:8px 0 10px}
.header-top-inner{display:grid;grid-template-columns:minmax(260px,330px) minmax(300px,360px);align-items:end;justify-content:space-between;gap:24px}
.brand{display:flex;align-items:center;gap:14px;color:#fff;min-width:0}
.brand:hover{text-decoration:none}
.brand-mark{width:74px;height:74px;object-fit:contain;filter:drop-shadow(0 8px 16px rgba(0,0,0,.28))}
.brand-combined{display:block;height:96px;width:auto;object-fit:contain}
.brand-lockup{display:flex;flex-direction:column;min-width:0}
.brand-title{font-family:"Trebuchet MS",Inter,sans-serif;font-size:2.35rem;font-weight:900;line-height:.88;text-transform:uppercase;letter-spacing:.02em;color:#fff}
.brand-title strong{color:var(--gold)}
.brand-tagline{margin-top:8px;font-family:"Segoe Print","Bradley Hand",cursive;font-size:1.02rem;color:#d9ebfb}

.guide-banner{position:static;min-height:190px}
.guide-portrait{position:absolute;left:calc((100% - min(1560px, 100% - 32px))/2 + 361px);bottom:-39px;width:auto;height:420px;max-width:none;object-fit:contain;object-position:center bottom;filter:drop-shadow(0 10px 18px rgba(0,0,0,.18));z-index:3}

@media (max-width:1592px){
  .guide-banner{position:relative;display:flex;align-items:flex-end;justify-content:center;min-height:190px;margin-bottom:-23px}
  .guide-portrait{position:static;left:auto;top:auto;bottom:auto;height:240px;transform:none}
}

.header-tools{display:grid;gap:12px;justify-self:end;width:100%}
.header-search{display:grid;grid-template-columns:1fr auto;gap:10px;background:rgba(255,255,255,.95);padding:10px;border-radius:18px;box-shadow:var(--shadow)}
.header-search input{border:0;background:transparent;padding:10px 12px;font:inherit;color:var(--text)}
.header-search button,.search-open,.menu-toggle,.btn,button.primary,button.secondary{
  appearance:none;border:0;cursor:pointer;border-radius:12px;font:inherit;font-weight:800
}
.header-search button{background:var(--navy);color:#fff;padding:10px 14px}
.header-aux{display:flex;gap:10px;justify-content:flex-end}
.search-open{background:#fff1cc;color:#563807;padding:11px 15px;border:2px solid rgba(255,214,116,.65)}
.menu-toggle{display:none;background:#fff;color:var(--navy-dark);padding:11px 15px}

.nav-ribbon{padding:0 0 18px;position:relative;z-index:1}
.nav-ribbon-inner{
  display:grid;
  grid-template-columns:repeat(5,minmax(0,1fr));
  gap:14px;
  background:rgba(248,241,228,.96);
  border:2px solid rgba(23,48,72,.95);
  border-radius:24px 24px 0 0;
  padding:16px 18px;
  box-shadow:var(--shadow-lg);
  max-width:640px;
  margin-left:auto;
  margin-right:0;
}
.nav-pill{
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:6px;
  min-height:76px;
  border-radius:16px;
  padding:12px 10px;
  background:transparent;
  color:#12263a;
  font-family:"Trebuchet MS",Inter,sans-serif;
  font-size:.98rem;
  font-weight:900;
  text-align:center;
}
.nav-pill:hover{text-decoration:none;background:#f5ead0}
.nav-icon{font-size:1.7rem;line-height:1}
.mobile-nav{display:grid;gap:10px;background:var(--paper);border:2px solid var(--line-dark);border-radius:18px;padding:14px 16px;margin:0 auto 16px;width:min(560px,calc(100% - 32px));box-shadow:var(--shadow)}
.mobile-nav a{font-weight:800;color:var(--navy-dark)}

.search-drawer{position:fixed;inset:0;background:rgba(5,20,35,.72);padding:24px;display:grid;place-items:center;z-index:90}
.search-panel{position:relative;display:grid;grid-template-columns:320px minmax(0,1fr);gap:30px;align-items:center;max-width:1020px;min-height:390px;background:var(--paper);border:2px solid var(--line-dark);border-radius:28px;padding:28px 34px;box-shadow:var(--shadow-lg)}
.search-panel img{width:320px;height:350px;justify-self:center;align-self:end;object-fit:contain;object-position:center bottom}
.search-close{position:absolute;top:12px;right:12px;width:42px;height:42px;border-radius:50%;border:0;background:var(--navy);color:#fff;font-size:1.6rem;cursor:pointer}
.search-panel > div:last-child{min-width:0}
.search-panel form,.ask-box{display:flex;gap:10px;align-items:center}
.search-panel input,.ask-box input,input,select,textarea{
  width:100%;
  border:2px solid #c8bea9;
  border-radius:12px;
  background:#fff;
  padding:12px 14px;
  font:inherit;
  color:var(--text)
}
input:focus,select:focus,textarea:focus,button:focus,a:focus{outline:3px solid var(--gold);outline-offset:2px}

main{padding-bottom:40px}
.home-main{padding-top:0}
.home-shell,
.breadcrumbs,
.page-title,
.page-section,
.content-grid{
  background:var(--paper);
  border:2px solid rgba(18,40,61,.96);
  box-shadow:var(--shadow-lg);
}
.home-shell{border-radius:0 0 28px 28px;padding:24px 22px 26px;margin-top:-2px}
.breadcrumbs{border-radius:20px;padding:13px 18px;margin-top:8px;margin-bottom:16px;font-size:.95rem;color:#31414f}
.breadcrumbs a{font-weight:700}
.page-title{display:grid;grid-template-columns:1fr auto;align-items:center;gap:24px;border-radius:24px;padding:28px 28px 24px;margin-bottom:18px}
.page-title img.page-title-avatar{width:227px;height:340px;object-fit:contain}
.page-section,.content-grid{border-radius:24px;padding:26px}
.content-grid{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:24px;align-items:start}
.prose{min-width:0}
.sidebar{min-width:0}
.sidebar .card{position:sticky;top:18px;background:#fffdf7;border:1px solid var(--line);border-radius:18px;padding:18px 18px 20px;box-shadow:var(--shadow)}
.sidebar .card img{display:none}
.sidebar .card > a{display:block;padding:9px 0;border-bottom:1px solid var(--line);font-weight:700;line-height:1.35}
.sidebar .card > a:first-of-type{padding-top:2px}
.sidebar .card > a:last-child{padding-bottom:0;border-bottom:0}

.home-shell-head{text-align:center;max-width:1060px;margin:0 auto 24px}
.home-shell-head h1{font-family:Georgia,"Times New Roman",serif;font-size:clamp(2.1rem,4vw,3.3rem);font-weight:700;letter-spacing:0;color:#16283e;margin:.08em 0 .18em}
.home-intro{max-width:980px;margin:0 auto;color:#394753;font-size:1.03rem}
.home-grid-layout{display:grid;grid-template-columns:1fr;gap:26px;align-items:start}
.category-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
.category-card-large{
  display:flex;
  flex-direction:column;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:18px;
  overflow:hidden;
  box-shadow:0 6px 16px rgba(8,27,45,.09);
}
.category-card-large:hover{text-decoration:none;transform:translateY(-1px);box-shadow:0 10px 22px rgba(8,27,45,.12)}
.category-card-large img{width:100%;aspect-ratio:1.32/1;object-fit:cover;background:#fff8eb;border-bottom:1px solid #ddd0ba}
.category-copy{padding:14px 16px 16px}
.category-copy h2{margin:0 0 8px;font-size:1.65rem}
.category-copy p{margin:0 0 10px;color:#35404a;font-size:.98rem}
.meta-row{display:flex;flex-wrap:wrap;gap:10px;color:#5b6771;font-size:.92rem;font-weight:700}
.cat-construction{color:#123f87}.cat-measurement{color:#1c4f90}.cat-geometry{color:#6b3fb4}.cat-woodworking{color:#8f4b11}.cat-mechanical{color:#0f5f86}.cat-electrical{color:#7a5d00}.cat-materials{color:#284f8e}.cat-finishing{color:#4f8b2f}

.btn,button.primary{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:var(--navy);color:#fff;padding:12px 16px;text-decoration:none;box-shadow:0 4px 10px rgba(0,0,0,.12)}
.btn:hover,button.primary:hover{text-decoration:none;background:#154c80}
.btn.secondary,button.secondary{background:#f6e0ae;color:#543707;border:2px solid #dfc173;box-shadow:none}

.trust-strip{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;margin-top:20px}
.trust-strip article{background:#fffbf3;border:1px solid var(--line);border-radius:18px;padding:16px 18px;box-shadow:0 4px 12px rgba(8,27,45,.06)}
.trust-strip h2{font-size:1.25rem;margin:0 0 8px}
.trust-strip p{margin:0;color:#3f4a54}

.tool-list{display:grid;gap:14px}
.tool-row{
  display:flex;
  justify-content:space-between;
  gap:14px;
  align-items:center;
  padding:18px 20px;
  border-radius:18px;
  background:#fffdf8;
  border:1px solid var(--line);
  box-shadow:0 4px 10px rgba(8,27,45,.05);
}
.tool-row:hover{text-decoration:none;background:#fff8ea}
.tool-row h2{margin:0 0 6px;font-size:1.45rem}
.tool-row p{margin:0;color:#394650}
.tool-row strong{white-space:nowrap;color:var(--navy-soft);font-weight:900}
.section-illustration{width:min(100%,640px);margin:0 auto 22px;border-radius:18px;background:#fff8eb;border:1px solid #dfd0b5;padding:8px}

.catalog-grid,.converter-card-grid,.guide-grid,.grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
.catalog-card,.converter-card,.guide-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:20px;
  overflow:hidden;
  box-shadow:0 6px 16px rgba(8,27,45,.07);
}
.catalog-card img,.converter-card img,.guide-card img{width:100%;aspect-ratio:16/9;object-fit:cover;background:#fff8eb;border-bottom:1px solid #dfd0b5}
.catalog-card-body,.converter-card-body,.guide-card-body{padding:18px}
.catalog-card h2,.converter-card h2,.guide-card h2{margin:0 0 8px;font-size:1.5rem}
.catalog-card p,.converter-card p,.guide-card p{margin:0 0 12px;color:#394650}
.link-list{list-style:none;margin:0;padding:0;display:grid;gap:8px}
.link-list a{font-weight:800}
.catalog-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:12px;color:#5b6771;font-size:.92rem;font-weight:700}
.catalog-badges span{background:#f4ebd7;border:1px solid #ddceb1;border-radius:999px;padding:6px 10px}
.catalog-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}
.quick-card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin-bottom:22px}
.quick-card{background:#fffdf8;border:1px solid var(--line);border-radius:18px;padding:18px;box-shadow:0 4px 10px rgba(8,27,45,.05)}
.quick-card h2{margin:0 0 8px;font-size:1.35rem}
.quick-card p{margin:0;color:#394650}
.highlight-panel{display:grid;grid-template-columns:minmax(180px,240px) minmax(0,1fr);gap:24px;align-items:center;background:#fff7e4;border:1px solid #e1c574;border-radius:22px;padding:22px;margin-bottom:22px}
.all-tools-section{margin-bottom:32px}
.all-tools-section-title{display:flex;align-items:center;gap:10px;margin:0 0 16px;font-size:1.6rem}
.all-tools-count{display:inline-flex;align-items:center;justify-content:center;min-width:28px;padding:2px 9px;border-radius:999px;background:#f4ebd7;border:1px solid #ddceb1;color:#5b6771;font-size:.82rem;font-weight:800}
.all-tools-more{margin-top:8px;padding-top:8px;border-top:1px solid var(--line)}
.all-tools-more-title{margin:0 0 16px;font-size:1.4rem}
.highlight-panel img{width:100%;max-width:230px;justify-self:center;object-fit:contain}
.highlight-panel h2{margin:0 0 10px;font-size:2rem}
.highlight-panel p{margin:0 0 12px}

.calculator-shell{background:#fffdf8;border:1px solid var(--line);border-radius:22px;padding:24px;box-shadow:0 6px 16px rgba(8,27,45,.06);margin:0 0 22px}
.calc-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.field label{display:block;margin-bottom:6px;font-weight:900;color:#17324d}
.field small{display:block;margin-top:6px;color:var(--muted);font-size:.92rem}
.calc-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}
.result-panel{margin-top:20px;background:#f0f8ff;border:2px solid #79a3c6;border-radius:16px;padding:18px}
.result-primary{font-size:1.72rem;font-weight:900;color:var(--navy-dark);font-variant-numeric:tabular-nums}
.error-box{margin-top:16px;background:#fff1ef;border-left:5px solid #b94a48;border-radius:12px;padding:14px 16px}
.notice{display:block;background:#fff7e5;border:1px solid #e3c979;border-radius:18px;padding:18px 20px;margin-top:22px}
.notice img{display:none}
.notice h2{margin-top:0;font-size:1.35rem}

.ask-box{background:#fffdf8;padding:14px;border-radius:18px;border:1px solid var(--line);box-shadow:0 6px 16px rgba(8,27,45,.07)}
.hero-number{font-size:clamp(3rem,8vw,6rem);line-height:.9;color:var(--navy)}
.data-table{width:100%;border-collapse:collapse;background:#fffdf8;margin-top:14px;overflow:hidden}
.data-table th,.data-table td{border:1px solid #ddcfb8;padding:10px 12px;text-align:left;vertical-align:top}
.data-table th{background:#f5ebd5}
.reference-table-wrap{overflow:auto;border:1px solid var(--line);border-radius:16px}
.ad-slot,.ad-slot-home,.ad-slot-footer{display:none!important}
.sage-inline{float:right;width:min(220px,42%);margin:0 0 18px 20px;border-radius:18px;background:#fff8eb;border:1px solid #dfd0b5;padding:8px}

.site-footer{background:transparent;color:#fff;padding:16px 0 28px}
.footer-motto{font-family:Georgia,"Times New Roman",serif;font-weight:700;text-align:center;font-size:clamp(2rem,3.2vw,3rem);line-height:1.18;color:#fff;margin-top:8px}
.footer-motto span{color:#d8ebff}.footer-motto strong{color:var(--gold)}
.footer-actions{display:flex;justify-content:center;flex-wrap:wrap;gap:12px;margin:18px auto 28px}
.footer-action{display:inline-flex;align-items:center;justify-content:center;min-width:220px;padding:13px 18px;border-radius:14px;background:#113f69;border:1px solid rgba(132,175,209,.45);color:#fff;box-shadow:0 6px 14px rgba(0,0,0,.14)}
.footer-action:hover{text-decoration:none;background:#175387}
.footer-grid{display:grid;grid-template-columns:1.6fr repeat(3,1fr);gap:28px;background:rgba(7,28,48,.48);border:1px solid rgba(120,167,205,.18);border-radius:24px;padding:28px;backdrop-filter:blur(6px)}
.footer-grid .brand{align-items:flex-start}
.footer-copy{color:#d7e6f4}
.site-footer a{color:#fff;display:block;margin:8px 0}
.site-footer h2{margin:0 0 10px;font-size:1rem;color:var(--gold);letter-spacing:.08em;text-transform:uppercase}
.copyright{border-top:1px solid rgba(255,255,255,.15);padding-top:16px;margin-top:20px;color:#d4e3ef}

body.page-inner .home-shell{display:none}
body.page-inner .header-top-inner{grid-template-columns:minmax(260px,330px) minmax(280px,340px);justify-content:space-between}
body.page-inner .guide-banner{opacity:.95}
body.page-inner .page-title + .content-grid .sidebar .card,
body.page-inner .page-title + .page-section .sidebar .card{top:20px}

@media (max-width:1200px){
  .header-top-inner{grid-template-columns:minmax(240px,320px) minmax(280px,340px);justify-content:space-between}
  .header-tools{grid-column:2;align-self:start}
  .category-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:980px){
  .nav-ribbon-inner{grid-template-columns:repeat(3,minmax(0,1fr));max-width:none;margin-left:0}
  .page-title img.page-title-avatar{width:173px;height:260px}
  .content-grid{grid-template-columns:1fr}
  .sidebar .card{position:static}
  .calc-grid,.catalog-grid,.converter-card-grid,.guide-grid,.grid,.quick-card-grid{grid-template-columns:1fr}
  .highlight-panel{grid-template-columns:1fr;text-align:left}
  .highlight-panel img{max-width:220px}
  .category-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:760px){
  body{background:linear-gradient(180deg, var(--navy) 0, var(--navy-dark) 200px, var(--navy-deep) 100%)}
  .wrap{width:min(100% - 20px,1380px)}
  .header-top-inner,body.page-inner .header-top-inner{grid-template-columns:1fr}
  .header-tools{grid-column:auto;justify-self:stretch}
  .header-search{grid-template-columns:1fr auto}
  .header-aux{justify-content:flex-start}
  .search-open{display:none}
  .menu-toggle{display:inline-flex}
  .nav-ribbon-inner{grid-template-columns:repeat(2,minmax(0,1fr));padding:14px}
  .home-shell{padding:20px 16px 22px}
  .home-shell-head h1{font-size:2rem}
  .trust-strip,.category-grid,.footer-grid{grid-template-columns:1fr}
  .brand-title{font-size:1.95rem}
  .brand-mark{width:60px;height:60px}
  .brand-combined{height:72px}
  .search-panel{grid-template-columns:1fr;padding:24px;min-height:0}
  .search-panel img{display:block;width:220px;height:250px;justify-self:center}
}
@media (max-width:560px){
  .breadcrumbs,.page-title,.page-section,.content-grid{padding:18px 14px}
  .nav-pill{font-size:.98rem;min-height:54px}
  .page-title{margin-bottom:16px;grid-template-columns:1fr}
  .page-title img.page-title-avatar{width:min(220px,100%);max-width:100%;height:auto;margin:8px auto 0}
  .tool-row{align-items:flex-start;flex-direction:column}
  .tool-row strong{white-space:normal}
  .footer-action{min-width:0;width:100%}
  .sage-inline{float:none;width:min(220px,100%);margin:0 auto 18px}
}

.result-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px;padding-top:14px;border-top:1px solid var(--line)}
@media print{.site-header,.site-footer,.breadcrumbs,.sidebar,.calc-actions,.result-actions,.page-title-avatar,.section-illustration{display:none!important}body{background:#fff;color:#000}.wrap,.content-grid{width:100%;max-width:none;padding:0}.calculator-shell{border:0;box-shadow:none}.result-panel{display:block!important;border:1px solid #777}}

.sage-choices{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;margin:0 0 14px}.sage-choices a{display:block;padding:10px 12px;border:1px solid var(--line);border-radius:12px;background:#fff8e9;font-weight:800}.result-kicker{margin:0 0 5px;color:var(--muted);font-size:.78rem;font-weight:900;letter-spacing:.08em;text-transform:uppercase}.calc-diagram{margin:0 0 18px;border:1px solid var(--line);border-radius:16px;background:#f8fbff;padding:12px}.calc-diagram svg{display:block;width:100%;height:auto;max-height:220px}.related-tools{margin-top:24px;padding:18px;border:1px solid var(--line);border-radius:16px;background:#fff8e9}.related-tools h2{margin-top:0}.related-tools ul{margin-bottom:0}@media(max-width:560px){.sage-choices{grid-template-columns:1fr}}


.calculator-tool-bar{display:flex;justify-content:flex-end;margin:-.25rem 0 .8rem}.favorite-tool[aria-pressed="true"]{font-weight:800}.personal-tools{margin:1.5rem 0 2rem;padding:1.25rem;border:1px solid rgba(21,49,72,.18);border-radius:18px;background:rgba(255,250,235,.65)}.personal-tools-heading{display:flex;gap:1rem;align-items:end;justify-content:space-between;margin-bottom:1rem}.personal-tools-heading h2{margin:.1rem 0}.personal-tools-heading p{max-width:34rem}.personal-tools-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1rem}.personal-tools-grid .quick-card{margin:0}.result-diagram{margin:1rem 0;padding:.75rem;border:1px solid rgba(21,49,72,.18);border-radius:14px;background:#fffdf4;text-align:center}.result-diagram svg{display:block;width:100%;max-width:420px;height:auto;margin:auto;overflow:visible}.result-diagram figcaption{font-size:.88rem;color:#52606a;margin-top:.45rem}.result-diagram text{font:600 12px system-ui,sans-serif;fill:#17324a}.diagram-shape{fill:none;stroke:#17324a;stroke-width:3;stroke-linejoin:round}.diagram-fill{fill:rgba(219,177,72,.18)}.diagram-dashed{stroke-dasharray:7 5}.diagram-mark{fill:none;stroke:#b06b22;stroke-width:2}.diagram-belt{fill:none;stroke:#b06b22;stroke-width:5;stroke-linecap:round}.diagram-point{fill:#d5a72d;stroke:#17324a;stroke-width:2}@media(max-width:700px){.personal-tools-heading{display:block}.personal-tools-grid{grid-template-columns:1fr}.calculator-tool-bar{justify-content:stretch}.calculator-tool-bar button{width:100%}}@media print{.calculator-tool-bar,.personal-tools{display:none!important}.result-diagram{break-inside:avoid;border-color:#777;background:#fff}}
.sage-choices button{display:block;width:100%;padding:10px 12px;border:1px solid var(--line);border-radius:12px;background:#fff8e9;font:inherit;font-weight:800;color:var(--navy);text-align:left;cursor:pointer}.sage-results{margin:12px 0;padding:12px;border-radius:12px;background:#f0f8ff}.result-details{display:grid;grid-template-columns:max-content 1fr;gap:6px 14px;margin:16px 0}.result-details dt{font-weight:900;color:var(--navy)}.result-details dd{margin:0}.share-calc-note{font-size:.9rem;color:var(--muted)}@media(max-width:560px){.result-details{grid-template-columns:1fr}.result-details dd{margin-bottom:8px}}
.personal-tool-item{display:flex;align-items:center;gap:8px}.personal-tool-item a{flex:1}.personal-tool-remove{border:0;background:transparent;color:#7a2b24;font-size:1.3rem;cursor:pointer;padding:2px 7px;border-radius:8px}.personal-tool-remove:hover{background:#f7dfdb}


/* Completion pass: My Tools, sharing, diagrams, and workshop print sheets */
.small-button{padding:.45rem .7rem;font-size:.85rem}.file-button{display:inline-flex;align-items:center;cursor:pointer}.link-button{border:0;background:none;color:var(--link,#174f79);text-decoration:underline;padding:0;font:inherit;cursor:pointer}.restored-values-note{margin:0 0 .75rem;padding:.6rem .8rem;border-left:4px solid #b98922;background:#fff8df}.field-wide{grid-column:1/-1}.field small{display:block;margin-top:.35rem;color:#5c6470}.diagram-line{fill:none;stroke:currentColor;stroke-width:3}.personal-tools-heading{display:flex;align-items:center;justify-content:space-between;gap:1rem}.calculator-tool-bar{flex-wrap:wrap}
@media print{body{background:#fff!important}.site-header,.site-footer,.breadcrumbs,.sidebar,.calculator-tool-bar,.calc-actions,.related-tools,.ad-slot,.restored-values-note{display:none!important}main,.wrap,.content-grid,.prose,.calculator-shell{display:block!important;width:auto!important;max-width:none!important;margin:0!important;padding:0!important;box-shadow:none!important}.page-title{padding:0 0 1rem!important}.page-title-avatar{display:none!important}.calculator-shell{border:0!important}.result-panel{break-inside:avoid;border:1px solid #333!important}.result-panel:after{content:'WorkshopCalculators.com  •  Printed ' attr(data-print-date);display:block;margin-top:1rem;font-size:10pt}.calc-diagram{max-width:6.5in;margin:0 auto 1rem}}
.personal-tool-controls{display:inline-flex;gap:.3rem;align-items:center}.personal-tool-move,.personal-tool-remove{min-width:2rem;min-height:2rem;border:1px solid currentColor;border-radius:.35rem;background:transparent;cursor:pointer}.personal-tool-move:focus-visible,.personal-tool-remove:focus-visible{outline:3px solid #d6a928;outline-offset:2px}

/* Approved converter illustrations */
.converter-feature-image{width:100%;max-width:900px;margin:0 auto 24px;border:1px solid var(--line);border-radius:20px;overflow:hidden;background:#fff8e9;box-shadow:0 6px 16px rgba(8,27,45,.06)}
.converter-feature-image img{display:block;width:100%;height:auto;background:#fff8e9}
.converter-feature-image figcaption{padding:10px 14px;color:var(--muted);font-size:.9rem;text-align:center}
@media(max-width:900px){.converter-feature-image{max-width:100%}}
@media(max-width:560px){.converter-feature-image{width:100%;border-radius:14px;margin-bottom:16px}.converter-feature-image figcaption{font-size:.82rem}}
@media print{.converter-feature-image{display:none!important}}


/* Converter directory artwork */
.converter-directory-page .page-title{display:grid;grid-template-columns:minmax(0,1fr) minmax(340px,520px);gap:28px;align-items:center;min-height:0}
.converter-directory-page .page-title .converter-directory-avatar{float:none;width:100%;max-width:520px;max-height:none;margin:0;justify-self:end;border-radius:16px;object-fit:contain}
.converter-directory-page .highlight-panel img{width:min(100%,300px);height:auto;aspect-ratio:4/3;object-fit:contain;border-radius:14px}
.converter-directory-page .converter-card img{display:block;width:100%;aspect-ratio:4/3;object-fit:contain;background:#fff8eb;border-bottom:1px solid #dfd0b5}
@media(max-width:900px){
  .converter-directory-page .page-title{grid-template-columns:1fr}
  .converter-directory-page .page-title .converter-directory-avatar{width:min(100%,560px);justify-self:center}
}
@media(max-width:560px){
  .converter-directory-page .page-title{padding:18px 14px}
  .converter-directory-page .highlight-panel img{width:100%}
}

/* Converter artwork: preserve full 4:3 composition and avoid inherited card cropping. */
.converter-directory-page img.converter-artwork,
.converter-feature-image img.converter-artwork{
  display:block!important;
  width:100%!important;
  height:auto!important;
  max-height:none!important;
  aspect-ratio:auto!important;
  object-fit:contain!important;
  object-position:center!important;
  background:#fff8eb;
}
.converter-directory-page .converter-card img.converter-artwork{border-bottom:1px solid #dfd0b5}
.converter-directory-page .converter-card{overflow:hidden}
.converter-feature-image{max-width:820px;margin:0 auto 22px}
.converter-feature-image img.converter-artwork{border-radius:16px}
@media(max-width:760px){.converter-feature-image{max-width:100%}}

/* Converter directory thumbnails: complete artwork in a compact uncropped frame. */
.converter-directory-page .converter-card-image{
  display:flex;
  align-items:center;
  justify-content:center;
  width:100%;
  aspect-ratio:16/9;
  overflow:hidden;
  background:#fff8eb;
  border-bottom:1px solid #dfd0b5;
}
.converter-directory-page .converter-card-image img.converter-artwork{
  width:auto!important;
  height:100%!important;
  max-width:100%!important;
  max-height:100%!important;
  aspect-ratio:auto!important;
  object-fit:contain!important;
  border:0!important;
}

.related-page-links{display:grid;gap:0}.related-page-links a{display:block;padding:10px 0;border-bottom:1px solid var(--line);font-weight:700;line-height:1.35}.related-page-links a:first-child{padding-top:2px}.related-page-links a:last-child{padding-bottom:0;border-bottom:0}.related-page-links a[aria-current="page"]{color:var(--muted);text-decoration:none;cursor:default}

/* Comprehensive converter pages */
.converter-page-hero{display:grid;grid-template-columns:minmax(0,1fr) minmax(360px,620px);gap:34px;align-items:center;overflow:hidden}
.converter-hero-copy{min-width:0}
.converter-hero-image{display:block;width:100%;height:auto;max-height:390px;object-fit:contain;border-radius:18px;background:#fff8eb}
.comprehensive-converter-shell{max-width:none}
.comprehensive-converter-shell select{width:100%}
.conversion-group{margin-top:12px;border:1px solid var(--line);border-radius:14px;background:#fff;overflow:hidden}
.conversion-group summary{cursor:pointer;padding:13px 16px;font-weight:900;color:var(--navy);background:#fff8e9}
.conversion-group[open] summary{border-bottom:1px solid var(--line)}
.conversion-group .data-table-wrap{overflow-x:auto}
.conversion-group .data-table{margin:0;border:0;border-radius:0}
.conversion-group .data-table th{width:65%}
.conversion-group .data-table th small{display:block;margin-top:3px;font-weight:400;color:var(--muted)}
.conversion-group .data-table td{text-align:right;white-space:nowrap}
.conversion-group .data-table td span{color:var(--muted)}
.conversion-group .current-unit{background:#fff2c7}
.result-explainer{margin:.35rem 0 .8rem;color:var(--muted)}
.historical-unit-note{padding:12px 14px;border-left:4px solid var(--gold);background:#fff8e9;border-radius:8px}
.text-only-notice{grid-template-columns:1fr}
.related-links-card ul{list-style:none;margin:0;padding:0}
.related-links-card li+li{border-top:1px solid var(--line)}
.related-links-card a{display:block;padding:12px 0;font-weight:800}
.content-grid.lesson-single{grid-template-columns:minmax(0,1fr)}
.related-tools-inline{margin:18px 0 8px;padding:18px 20px;border:1px solid var(--line);border-radius:18px;background:#fffdf7;box-shadow:var(--shadow)}
.related-tools-inline h2{margin:0 0 12px;font-size:1.25rem}
.related-tools-inline ul{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
.related-tools-inline li{margin:0}
.related-tools-inline a{display:flex;align-items:center;justify-content:center;min-height:58px;padding:12px 14px;border:1px solid var(--line);border-radius:14px;background:#fff;text-align:center;font-weight:800;line-height:1.3;text-decoration:none}
.related-tools-inline a:hover{text-decoration:none;background:#f7fbff;border-color:#c9dff5}

@media(max-width:900px){.converter-page-hero{grid-template-columns:1fr}.converter-hero-image{max-width:720px;justify-self:center;max-height:none}.related-tools-inline ul{grid-template-columns:1fr 1fr}}
@media(max-width:560px){.converter-page-hero{padding:18px 14px;gap:18px}.converter-hero-image{border-radius:12px}.conversion-group .data-table th{width:auto}.conversion-group .data-table th,.conversion-group .data-table td{padding:10px 8px;font-size:.9rem}.related-tools-inline{padding:16px 14px}.related-tools-inline ul{grid-template-columns:1fr}.related-tools-inline a{min-height:0;padding:12px}}
@media print{.converter-hero-image{display:none!important}.conversion-group{break-inside:avoid}.conversion-group:not([open])>*:not(summary){display:block!important}}



/* Sage guided lesson: alternating illustrated article (single consolidated definition) */
.sage-lesson-intro{max-width:760px;margin:2rem auto 1.35rem;text-align:center}
.sage-lesson-intro h2{margin-bottom:.35rem}
.sage-lesson-flow{display:grid;gap:44px;margin:1.5rem 0 0}

.sage-teach-row{display:grid;grid-template-columns:minmax(360px,560px) minmax(0,75ch);gap:clamp(24px,3vw,46px);align-items:center;justify-content:center;width:100%;max-width:none;margin:0;padding:0}
.sage-teach-row.image-right{grid-template-columns:minmax(0,75ch) minmax(360px,560px);justify-content:center}
.sage-teach-row .sage-inset{display:flex;align-items:flex-end;justify-content:center;width:100%;min-width:0}
.sage-teach-row .sage-inset img{display:block;width:100%;max-width:560px;height:auto;object-fit:contain}
.sage-image-placeholder{width:100%;max-width:560px;aspect-ratio:2/3;display:flex;align-items:center;justify-content:center;margin-inline:auto;border:2px dashed #b9c3cc;border-radius:16px;background:rgba(255,255,255,.5);color:var(--muted);font-weight:700;text-align:center;padding:1.5rem}
.converter-hero-placeholder{max-width:none;aspect-ratio:1672/941;max-height:390px}
.sage-teach-row .sage-copy{min-width:0;width:100%;max-width:75ch;padding:4px 0}
.sage-teach-row .sage-copy h3{font-size:1.9rem;margin:.1rem 0 .65rem}
.sage-teach-row .sage-copy p{margin:.7rem 0;font-size:1.2rem;line-height:1.72;text-indent:0}
.sage-teach-row .math-walkthrough p,.sage-teach-row .tidbit p{margin:.5rem 0;font-size:1.1rem}

.sage-kicker{margin:0!important;color:var(--blue);font-size:.78rem;font-weight:900;letter-spacing:.1em;text-transform:uppercase;text-indent:0!important}
.math-walkthrough{margin-top:.8rem;padding:14px 16px;border-left:4px solid var(--blue);border-radius:0 14px 14px 0;background:#f2f8fd}
.math-walkthrough code{font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:.98em;color:var(--navy);white-space:normal}
.math-line{display:block;margin:.35rem 0;font-weight:800}
.tidbit{margin-top:.85rem;padding:13px 15px;border:1px solid #e7c56f;border-radius:14px;background:#fff8e9}
.tidbit strong{display:block;margin-bottom:.2rem;color:var(--navy)}

.sage-fries-finale{display:grid;grid-template-columns:minmax(0,1fr) minmax(320px,440px);gap:30px;align-items:center;max-width:1100px;margin:52px auto 4px;padding:28px 32px;border-top:2px solid #e7c56f;border-bottom:2px solid #e7c56f;background:linear-gradient(90deg,#fffdf8,#fff7df)}
.sage-fries-finale img{display:block;width:100%;height:auto;max-height:460px;object-fit:contain}
.sage-fries-finale h3{font-size:1.65rem;margin:.1rem 0 .55rem}
.sage-fries-finale p{line-height:1.72}

@media(max-width:900px){
  .sage-teach-row{grid-template-columns:minmax(240px,320px) minmax(0,60ch);gap:22px;justify-content:center}
  .sage-teach-row.image-right{grid-template-columns:minmax(0,60ch) minmax(240px,320px);justify-content:center}
  .sage-teach-row .sage-inset img{max-width:320px}
  .sage-fries-finale{grid-template-columns:1fr 260px}
}
@media(max-width:640px){
  .sage-lesson-flow{gap:26px}
  .sage-teach-row,.sage-teach-row.image-right{grid-template-columns:1fr!important;gap:14px}
  .sage-teach-row .sage-inset{order:-1}
  .sage-teach-row .sage-inset img{max-width:260px;margin-inline:auto}
  .sage-teach-row .sage-copy h3{font-size:1.3rem}
  .sage-teach-row .sage-copy p{font-size:1rem;line-height:1.62}
  .math-walkthrough,.tidbit{grid-column:1/-1}
  .sage-fries-finale{grid-template-columns:1fr;padding:18px;margin-top:30px}
  .sage-fries-finale img{max-width:300px;justify-self:center;order:-1}
}
@media print{.sage-inset,.sage-fries-finale img{display:none!important}.sage-teach-row,.sage-teach-row.image-right,.sage-fries-finale{display:block!important;max-width:none!important;padding:0!important;margin:1rem 0!important;border:0!important;background:#fff!important}}

/* Length converter usability, accessibility, and controlled ad layout */
.converter-input-grid{display:grid;grid-template-columns:minmax(140px,.8fr) minmax(190px,1.2fr) auto minmax(190px,1.2fr);gap:14px;align-items:end}
.swap-units{min-height:46px;padding:10px 14px;border:1px solid var(--line);border-radius:12px;background:#fff8e9;color:var(--navy);font-weight:800;cursor:pointer}
.swap-units:hover,.swap-units:focus-visible{background:#fff0c7}
.common-conversions{margin-top:18px;padding-top:16px;border-top:1px solid var(--line)}
.common-conversions p{margin:0 0 10px}
.common-conversion-buttons{display:flex;flex-wrap:wrap;gap:8px}
.common-conversion-buttons button{padding:9px 12px;border:1px solid var(--line);border-radius:999px;background:#fff;color:var(--navy);font-weight:700;cursor:pointer}
.common-conversion-buttons button:hover,.common-conversion-buttons button:focus-visible{background:#fff8e9}
.targeted-answer{padding-bottom:4px}
.result-label{margin:0;color:var(--muted);font-weight:800}
.result-formula{margin:.4rem 0 0;color:var(--muted)}
.result-tools{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px}
.result-tools button{min-height:42px}
.all-equivalents{margin-top:16px;border-top:1px solid var(--line);padding-top:12px}
.all-equivalents>summary{cursor:pointer;font-weight:900;color:var(--navy)}
.data-table caption{text-align:left;padding:10px 12px;font-weight:800;color:var(--navy);background:#fffdf8}
.data-table thead th{background:#f7f2e9;color:var(--navy)}
.lesson-contents{max-width:760px;margin:1.5rem auto 2rem;padding:18px 20px;border:1px solid var(--line);border-radius:16px;background:#fffdf8;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px 20px}
.lesson-contents h2{grid-column:1/-1;margin:0 0 6px;font-size:1.25rem}
.lesson-contents a{font-weight:700;line-height:1.35}
.length-faq{max-width:860px;margin:2.5rem auto 0}
.length-faq>h2{margin-top:0}
.length-faq details{margin-top:10px;border:1px solid var(--line);border-radius:13px;background:#fff;overflow:hidden}
.length-faq summary{cursor:pointer;padding:14px 16px;font-weight:900;color:var(--navy);background:#fff8e9}
.length-faq details p{margin:0;padding:14px 16px}
.controlled-ad{width:100%;margin:28px auto;border-radius:12px;overflow:hidden;text-align:center;display:block;min-height:120px;background:#f5f2ec;border:1px dashed #c9c2b4}
.controlled-ad:empty::before{content:'Advertisement';display:flex;align-items:center;justify-content:center;min-height:118px;color:var(--muted);font-size:.75rem;letter-spacing:.04em;text-transform:uppercase}
.controlled-ad-mid-lesson{max-width:900px}
.related-tools-inline{margin-top:30px}
@media(max-width:820px){
  .converter-input-grid{grid-template-columns:1fr 1fr}
  .swap-units{grid-column:1/-1;justify-self:start}
  .lesson-contents{grid-template-columns:1fr}
  .lesson-contents h2{grid-column:auto}
}
@media(max-width:560px){
  .converter-input-grid{grid-template-columns:1fr}
  .swap-units{grid-column:auto;width:100%}
  .common-conversion-buttons{display:grid;grid-template-columns:1fr 1fr}
  .common-conversion-buttons button{border-radius:10px;text-align:left}
  .lesson-contents{padding:16px 14px}
}
@media print{.controlled-ad,.lesson-contents,.common-conversions,.result-tools,.swap-units{display:none!important}}

.not-found{padding:0}
.not-found-bg{position:relative;min-height:100dvh;background-size:cover;background-position:center right;background-repeat:no-repeat}
@media (max-width:760px){
  .not-found-bg{background-position:78% center}
}

/* Accessibility and usability */
:focus:not(:focus-visible){outline:none}
:focus-visible{outline:3px solid var(--gold);outline-offset:3px}
button,input,select,textarea,a{scroll-margin-top:1rem}
button,.primary,.secondary,.mobile-nav a{min-height:44px}
input,select,textarea{min-height:44px}
.calc-instructions{margin:0 0 1rem;padding:.75rem 1rem;border-left:4px solid var(--gold);background:#fff8e8;line-height:1.55}
.error-box[role="alert"]{border:2px solid #9d241e;background:#fff1ef;color:#64150f;font-weight:700}
.error-box:focus,.result-panel:focus{outline:3px solid var(--gold);outline-offset:3px}
[aria-invalid="true"]{border-color:#9d241e!important;box-shadow:0 0 0 2px rgba(157,36,30,.18)}
.field small{display:block;line-height:1.45;margin-top:.35rem}
summary{cursor:pointer;min-height:44px;display:flex;align-items:center}
.data-table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch}
table{border-collapse:collapse}
caption{font-weight:700;text-align:left;padding:.5rem 0}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto!important}*,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}
@media (forced-colors:active){button,input,select,textarea,.card,.calculator-shell,.result-panel,.error-box{border:1px solid CanvasText}.primary,.secondary{forced-color-adjust:auto}}
@media (max-width:640px){.calc-actions{display:grid;grid-template-columns:1fr}.calc-actions button{width:100%}}