:root{
  --ink:#191d19;
  --muted:#656b63;
  --paper:#f5f2ea;
  --surface:#fffdf8;
  --line:#d8d4ca;
  --accent:#db5d32;
  --soft:#e9e4d8;
  --max:1180px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:Inter,ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;line-height:1.6;text-rendering:optimizeLegibility}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration-thickness:1px;text-underline-offset:.18em}
a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid #2378c5;outline-offset:4px}
.skip-link{position:fixed;z-index:100;top:12px;left:12px;padding:10px 14px;background:#fff;color:#111;transform:translateY(-180%)}
.skip-link:focus{transform:none}
.seo-header{min-height:76px;padding:14px max(24px,calc((100vw - var(--max))/2));display:flex;align-items:center;gap:28px;border-bottom:1px solid var(--line);background:rgba(245,242,234,.96)}
.seo-brand{display:inline-flex;align-items:center;gap:10px;font-size:18px;font-weight:750;text-decoration:none;letter-spacing:-.02em;white-space:nowrap}
.seo-brand span{display:grid;place-items:center;width:32px;height:32px;border-radius:10px;background:var(--ink);color:#fff;font-family:Georgia,serif;font-size:22px;font-style:italic}
.seo-header nav{display:flex;align-items:center;gap:22px;margin-right:auto}
.seo-header nav a,.seo-actions>a:first-child{font-size:13px;font-weight:650;text-decoration:none;color:#3d423d}
.seo-header nav a:hover,.seo-actions>a:first-child:hover{color:var(--accent)}
.seo-actions{display:flex;align-items:center;gap:17px}
.button{display:inline-flex;align-items:center;justify-content:center;gap:12px;min-height:44px;padding:10px 19px;border:1px solid var(--ink);border-radius:999px;background:var(--ink);color:#fff;font-size:13px;font-weight:720;line-height:1.2;text-decoration:none;transition:transform .18s ease,background .18s ease}
.button:hover{background:#303630;transform:translateY(-1px)}
.seo-hero,.content-section,.final-cta{width:min(var(--max),calc(100% - 48px));margin-inline:auto}
.seo-hero{padding:52px 0 72px}
.breadcrumbs{display:flex;align-items:center;gap:10px;margin-bottom:56px;color:var(--muted);font-size:12px}
.breadcrumbs a{color:var(--ink)}
.hero-layout{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(270px,.55fr);align-items:end;gap:70px}
.hero-layout>div:first-child:only-child{max-width:900px}
.eyebrow,.section-kicker{margin:0 0 20px;color:var(--accent);font-size:11px;font-weight:800;letter-spacing:.16em;line-height:1.3}
h1,h2,h3,p{margin-top:0}
h1,h2{font-family:Georgia,"Times New Roman",serif;font-weight:500;letter-spacing:-.042em;line-height:1.04}
h1{max-width:920px;margin-bottom:28px;font-size:clamp(44px,6.7vw,86px)}
h2{max-width:800px;margin-bottom:30px;font-size:clamp(34px,4.5vw,58px)}
h3{letter-spacing:-.02em;line-height:1.25}
.lead{max-width:770px;margin-bottom:31px;color:#454b45;font-size:clamp(18px,2vw,23px);line-height:1.55}
.hero-actions{display:flex;align-items:center;gap:22px;flex-wrap:wrap}
.text-link{font-size:13px;font-weight:700}
.hero-proof{margin:0;border:1px solid #bbb5aa;background:#ded9ce;transform:rotate(1.2deg)}
.hero-proof img{aspect-ratio:4/5;object-fit:cover}
.hero-proof figcaption{display:flex;padding:11px 13px;background:var(--surface);font-size:10px;font-weight:750;letter-spacing:.09em;text-transform:uppercase}
.evidence-note{display:grid;grid-template-columns:150px minmax(0,1fr);gap:20px;margin-top:58px;padding:23px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.evidence-note strong{font-size:12px;letter-spacing:.08em;text-transform:uppercase}
.evidence-note p{max-width:850px;margin:0;color:var(--muted);font-size:14px}
.content-section{padding:86px 0;border-top:1px solid var(--line)}
.content-section>p,.content-section>ul,.content-section>ol{max-width:800px;font-size:17px}
.content-section>p{color:#414741}
.content-section a:not(.button){font-weight:700}
.prompt-example{max-width:900px;margin:30px 0;padding:28px 30px;border:1px solid var(--line);border-left:3px solid var(--accent);background:var(--surface)}
.prompt-example .example-label{margin-bottom:15px;color:var(--accent);font-size:11px;font-weight:800;letter-spacing:.08em;text-transform:uppercase}
.prompt-example p:last-child{margin-bottom:0;color:#414741;font-size:17px}
.editorial-meta{display:flex;flex-wrap:wrap;gap:10px 26px;width:min(var(--max),calc(100% - 48px));margin:0 auto;padding:24px 0;color:var(--muted);font-size:13px;border-top:1px solid var(--line)}
.sources>p{font-size:15px}.sources h2{font-size:clamp(30px,3.4vw,44px)}
.step-list,.audit-list{margin:38px 0 0;padding:0;list-style:none;counter-reset:steps;border-top:1px solid var(--line)}
.step-list li,.audit-list li{display:grid;grid-template-columns:minmax(220px,.7fr) minmax(0,1fr);gap:35px;padding:25px 0;border-bottom:1px solid var(--line);counter-increment:steps}
.step-list strong:before,.audit-list strong:before{content:counter(steps,decimal-leading-zero) " / ";margin-right:9px;color:var(--accent);font-size:11px;letter-spacing:.1em}
.step-list span,.audit-list span{color:var(--muted)}
.audit-list{display:grid;grid-template-columns:1fr 1fr;border:0;gap:1px;background:var(--line)}
.audit-list li{display:flex;min-height:170px;flex-direction:column;gap:15px;padding:26px;background:var(--surface);border:0}
.audit-list strong:before{display:block;margin:0 0 13px}
.fact-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;margin-top:38px;background:var(--line);border:1px solid var(--line)}
.fact-grid article{min-height:230px;padding:25px;background:var(--surface)}
.fact-grid article>span,.guide-cards>a>span{display:block;margin-bottom:38px;color:var(--accent);font-size:10px;font-weight:800;letter-spacing:.14em}
.fact-grid h3{margin-bottom:13px;font-size:20px}
.fact-grid p{margin:0;color:var(--muted);font-size:14px}
.split{display:grid;grid-template-columns:1fr 1fr;gap:40px;margin-top:35px}
.split>div{padding:30px;border:1px solid var(--line);background:rgba(255,253,248,.48)}
.split h3{font-size:23px}
.check-list{margin:24px 0;padding:0;list-style:none}
.check-list li{position:relative;padding:11px 0 11px 24px;border-bottom:1px solid var(--line)}
.check-list li:before{content:"";position:absolute;top:21px;left:2px;width:7px;height:7px;border-radius:50%;background:var(--accent)}
.evidence-pair{display:grid;grid-template-columns:1fr 1fr;gap:24px;max-width:900px;margin:38px 0}
.evidence-pair figure{margin:0;border:1px solid var(--line);background:#ddd8ce}
.evidence-pair img{width:100%;aspect-ratio:4/5;object-fit:cover}
.evidence-pair figcaption{display:flex;flex-direction:column;gap:4px;padding:16px 18px;background:var(--surface)}
.evidence-pair figcaption span{color:var(--muted);font-size:13px}
.guide-cards{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:38px}
.guide-cards>a{display:flex;min-height:330px;flex-direction:column;padding:30px;border:1px solid var(--line);background:var(--surface);text-decoration:none;transition:transform .18s ease,border-color .18s ease}
.guide-cards>a:hover{transform:translateY(-3px);border-color:#a9a398}
.guide-cards h3{max-width:420px;font-family:Georgia,"Times New Roman",serif;font-size:34px;font-weight:500;letter-spacing:-.035em}
.guide-cards p{max-width:480px;color:var(--muted)}
.guide-cards strong{margin-top:auto;color:var(--accent);font-size:13px}
table{width:100%;margin-top:35px;border-collapse:collapse;background:var(--surface);font-size:14px}
th,td{padding:17px 18px;border:1px solid var(--line);text-align:left;vertical-align:top}
th{background:var(--soft);font-size:11px;letter-spacing:.08em;text-transform:uppercase}
.faq-list{max-width:900px;border-top:1px solid var(--line)}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:22px 0;cursor:pointer;font-size:18px;font-weight:690;list-style:none}
.faq summary::-webkit-details-marker{display:none}
.faq summary:after{content:"+";font-size:23px;font-weight:400}
.faq details[open] summary:after{content:"−"}
.faq details p{max-width:720px;padding:0 40px 23px 0;margin:0;color:var(--muted)}
.related{display:grid;grid-template-columns:.8fr 1.2fr;gap:80px}
.related-links{border-top:1px solid var(--line)}
.related-links a{display:flex;justify-content:space-between;gap:20px;padding:19px 0;border-bottom:1px solid var(--line);text-decoration:none}
.related-links a:hover{color:var(--accent)}
.final-cta{margin-top:45px;padding:80px;background:var(--ink);color:#fff}
.final-cta .eyebrow{color:#efa37f}
.final-cta h2{max-width:820px}
.final-cta p{max-width:650px;color:#cbd0c9}
.button-light{margin-top:18px;background:#fff;color:var(--ink);border-color:#fff}
.button-light:hover{background:#eeeae2}
.seo-footer{width:min(var(--max),calc(100% - 48px));margin:72px auto 0;padding:44px 0;display:grid;grid-template-columns:1fr 1.5fr auto;gap:45px;border-top:1px solid var(--line);align-items:start}
.seo-footer p{max-width:340px;margin-top:16px;color:var(--muted);font-size:13px}
.seo-footer nav{display:grid;grid-template-columns:1fr 1fr;gap:9px 24px}
.seo-footer nav a{font-size:13px}
.seo-footer>span{font-size:12px;color:var(--muted);white-space:nowrap}
:is(.seo-guide,.seo-tool) .seo-hero{padding:32px 0 40px}
:is(.seo-guide,.seo-tool) .breadcrumbs{margin-bottom:28px;flex-wrap:wrap}
:is(.seo-guide,.seo-tool) .hero-layout{gap:36px}
:is(.seo-guide,.seo-tool) .hero-layout>div:only-child{grid-column:1/-1;max-width:900px}
:is(.seo-guide,.seo-tool) .eyebrow{margin-bottom:14px}
:is(.seo-guide,.seo-tool) h1{max-width:900px;margin-bottom:22px;font-size:clamp(40px,5vw,64px);line-height:1.08}
:is(.seo-guide,.seo-tool) .lead{max-width:840px;margin-bottom:24px;font-size:20px;line-height:1.55}
:is(.seo-guide,.seo-tool) .evidence-note{margin-top:32px;padding:18px 0}
.seo-guide .content-section{padding-block:64px}
.seo-guide .content-section h2{scroll-margin-top:24px}
.guide-toc{max-width:900px;margin-top:28px;padding:20px 24px;border:1px solid var(--line);background:var(--surface)}
.guide-toc>p{margin-bottom:12px;font-size:13px;font-weight:750;color:var(--muted)}
.guide-toc ol{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:2px 32px;margin:0;padding:0;list-style:none;counter-reset:guide-sections}
.guide-toc li{min-width:0;counter-increment:guide-sections}
.guide-toc a{display:flex;align-items:baseline;gap:10px;min-height:44px;padding:10px 0;font-size:15px;line-height:1.5;text-decoration:none;overflow-wrap:anywhere}
.guide-toc a:before{content:counter(guide-sections,decimal-leading-zero);flex:0 0 22px;color:var(--accent);font-size:12px;font-weight:750;font-variant-numeric:tabular-nums}
.guide-toc a:hover{text-decoration:underline;text-underline-offset:.22em}
.lighting-diagram{width:100%;max-width:600px;margin:28px 0}
.lighting-diagram svg{display:block;width:100%;height:auto}
.lighting-diagram figcaption{margin-top:12px;color:var(--muted);font-size:14px;line-height:1.6}
@media(max-width:980px){
  .seo-header{flex-wrap:wrap;gap:13px 22px}.seo-header nav{order:3;width:100%;overflow:auto;padding:3px 0 7px}.seo-actions{margin-left:auto}
  .hero-layout{grid-template-columns:1fr;gap:38px}.hero-proof{max-width:420px;transform:none}
  .fact-grid{grid-template-columns:1fr 1fr}.related{grid-template-columns:1fr;gap:20px}.seo-footer{grid-template-columns:1fr 1fr}.seo-footer>span{grid-column:1/-1}
}
@media(max-width:680px){
  .seo-header{padding:12px 18px}.seo-header nav{gap:18px}.seo-actions{gap:11px}.seo-actions>a:first-child{display:inline-flex}.seo-actions .button{min-height:38px;padding:8px 13px}
  .seo-hero,.content-section,.final-cta,.seo-footer{width:calc(100% - 32px)}.seo-hero{padding:34px 0 55px}.breadcrumbs{margin-bottom:42px}
  .editorial-meta{width:calc(100% - 32px)}.prompt-example{padding:23px 20px}
  h1{font-size:43px}h2{font-size:36px}.lead{font-size:18px}.evidence-note{grid-template-columns:1fr;gap:7px}
  .content-section{padding:62px 0}.step-list li{grid-template-columns:1fr;gap:9px}.audit-list,.fact-grid,.split,.guide-cards,.evidence-pair{grid-template-columns:1fr}
  .fact-grid article{min-height:190px}.guide-cards>a{min-height:290px}.final-cta{padding:48px 25px}.seo-footer{grid-template-columns:1fr}.seo-footer nav{grid-template-columns:1fr}.seo-footer>span{grid-column:auto}
  table{display:block;overflow-x:auto;white-space:normal}
  :is(.seo-guide,.seo-tool) .seo-hero{padding:24px 0 32px}:is(.seo-guide,.seo-tool) .breadcrumbs{margin-bottom:24px}
  :is(.seo-guide,.seo-tool) h1{font-size:38px;line-height:1.1}:is(.seo-guide,.seo-tool) .lead{font-size:18px}
  :is(.seo-guide,.seo-tool) .evidence-note{margin-top:26px}.seo-guide .content-section{padding-block:44px}
  .guide-toc{padding:18px}.guide-toc ol{grid-template-columns:1fr;gap:0}
  .lighting-diagram{margin-block:24px}
}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.button,.guide-cards>a{transition:none}}

/* Itemlume 01 identity - IL light fold. */
.seo-brand img{display:block;width:32px;height:32px;object-fit:contain;flex:none}.seo-brand{color:#183f44}
.public-auth-actions{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));align-items:stretch;gap:8px}.public-auth-actions .public-auth-button{display:flex;align-items:center;justify-content:center;min-height:46px;min-width:112px;padding:10px 14px;border:1px solid #a9d5ce;border-radius:8px;font-size:12px;font-weight:650;line-height:1.4;text-align:center;text-decoration:none;overflow-wrap:anywhere}.public-auth-actions .public-auth-primary{background:#38c9be;color:#083b36;border-color:#38c9be}.public-auth-actions .public-auth-primary:hover{background:#6bd9ce;border-color:#6bd9ce}.public-auth-actions .public-auth-secondary{background:#fff;color:#12695f}.public-auth-actions .public-auth-secondary:hover{background:#e8f7f4;border-color:#69afa4}.public-auth-actions .public-auth-button:focus-visible{outline:3px solid #087c72;outline-offset:3px}@media(max-width:560px){.public-auth-actions{width:100%}.public-auth-actions .public-auth-button{min-width:0;padding-inline:10px}}