/* Reading pages reuse PURP's public Design Brain tokens and brand assets. */
:root{color-scheme:light;font-family:var(--pdb-font-family);color:var(--pdb-purp-ink);background:#fff;font-synthesis:none}
*{box-sizing:border-box}body{margin:0}a{color:var(--pdb-purp-primary);text-underline-offset:.2em}a:hover{text-decoration-thickness:2px}a:focus-visible,summary:focus-visible,[tabindex]:focus-visible{outline:3px solid var(--pdb-purp-action);outline-offset:5px}img{max-width:100%;height:auto}h1,h2,h3,p{margin:0}h1,h2,h3{font-weight:700;letter-spacing:-.035em}html{scroll-padding-top:110px}.resource-skip{position:absolute;top:-100px;left:20px;z-index:30;padding:14px;background:#fff}.resource-skip:focus{top:12px}.resource-button{display:inline-flex;align-items:center;justify-content:center;background:var(--pdb-purp-primary);color:#fff!important;text-decoration:none!important;padding:13px 22px;border-radius:10px;font-weight:650}.resource-button:hover{background:var(--pdb-purp-royal)}.resource-wrap{max-width:1200px;margin:auto;padding:0 40px}.resource-breadcrumb{display:flex;flex-wrap:wrap;gap:8px 12px;list-style:none;padding:0;margin:36px 0 0;font-size:14px;color:var(--pdb-ink-800)}.resource-breadcrumb li+li::before{content:'/';color:var(--pdb-purp-orchid);margin-right:12px}.resource-breadcrumb a{color:inherit}.resource-hero{padding:52px 0 48px;max-width:1040px}.resource-hero h1{font-size:clamp(38px,5.2vw,68px);line-height:1.08;color:var(--pdb-purp-royal);max-width:19ch}.resource-hero .resource-lede{font-size:clamp(19px,2vw,23px);line-height:1.5;margin-top:24px;max-width:64ch;color:var(--pdb-ink-800)}.resource-byline{font-size:14px;line-height:1.6;margin-top:26px;color:var(--pdb-ink-800)}.resource-byline time{margin-left:12px}.resource-disclosure{font-size:14px;line-height:1.5;margin-top:10px;max-width:75ch;color:var(--pdb-ink-800)}.resource-layout{display:grid;grid-template-columns:210px minmax(0,720px);gap:64px;padding:8px 0 100px;align-items:start}.resource-contents{position:sticky;top:118px;padding:4px 20px 10px 0;font-size:14px;line-height:1.5}.resource-contents strong{display:block;margin-bottom:16px;color:var(--pdb-purp-royal);font-size:15px}.resource-contents ol{list-style:none;margin:0;padding:0}.resource-contents li+li{margin-top:14px}.resource-contents a{text-decoration:none}.resource-body{font-size:18px;line-height:1.75;min-width:0}.resource-body h2{font-size:30px;line-height:1.2;color:var(--pdb-purp-royal);margin-bottom:20px}.resource-body h3{font-size:21px;line-height:1.35;margin:28px 0 10px}.resource-body section+section{margin-top:52px}.resource-body p+p,.resource-body ul,.resource-body ol{margin-top:16px}.resource-body ul,.resource-body ol{padding-left:24px;margin-bottom:0}.resource-body li+li{margin-top:10px}.resource-summary{background:var(--pdb-purp-pearl);border-left:4px solid var(--pdb-purp-primary);padding:25px 28px;margin:0 0 44px}.resource-summary p{font-size:18px}.resource-summary strong{color:var(--pdb-purp-royal)}.resource-table-wrap{overflow-x:auto;margin:24px 0;border:1px solid var(--pdb-purp-lavender);border-radius:12px}.resource-body table{border-collapse:collapse;width:100%;font-size:16px;line-height:1.5;min-width:550px}.resource-body caption{text-align:left;font-weight:650;padding:18px 20px;background:var(--pdb-purp-pearl);color:var(--pdb-purp-royal)}.resource-body th{text-align:left;background:var(--pdb-purp-pearl);font-weight:650}.resource-body td,.resource-body th{padding:15px 18px;vertical-align:top;border-top:1px solid var(--pdb-purp-mist)}.resource-body td:first-child{font-weight:600;min-width:150px}.resource-example{padding:28px;background:var(--pdb-purp-pearl);border-radius:16px}.resource-example h2{font-size:26px}.resource-related{border-top:1px solid var(--pdb-purp-lavender);padding-top:30px}.resource-related ul{list-style:none;padding-left:0}.resource-hub-hero{padding-bottom:28px}.resource-feature{display:grid;grid-template-columns:1.08fr 1fr;gap:44px;align-items:center;background:var(--pdb-purp-pearl);border-radius:24px;padding:44px;margin:10px 0 60px}.resource-feature h2{font-size:clamp(29px,3vw,42px);line-height:1.15;color:var(--pdb-purp-royal)}.resource-feature p{font-size:18px;line-height:1.6;margin:20px 0 25px}.resource-feature figure{margin:0}.resource-feature img{display:block;border-radius:10px;border:5px solid var(--pdb-purp-plum);box-shadow:0 20px 40px -25px var(--pdb-purp-royal)}.resource-feature figcaption{font-size:13px;line-height:1.5;margin-top:14px;color:var(--pdb-ink-800)}.resource-library{margin-bottom:90px}.resource-library>h2{font-size:30px;color:var(--pdb-purp-royal);margin-bottom:12px}.resource-entry{display:grid;grid-template-columns:1fr 1fr;gap:40px;padding:28px 0;border-bottom:1px solid var(--pdb-purp-lavender)}.resource-entry h3{font-size:25px;line-height:1.25}.resource-entry h3 a{text-decoration:none}.resource-entry p{font-size:17px;line-height:1.6;color:var(--pdb-ink-800)}/* Shared PURP site nav and footer: kept byte-identical to the same rules in style.css/point-of-sale.css (see apps/pos-web/src/demoStory.test.ts "Resources hub and articles share the site nav and footer" for the contract). This page ships no script (see websiteSeo.test.mjs), so the two mega-menus use native <details>/<summary> disclosure instead of the button+aria-expanded pattern the interactive pages use, and the mobile menu stays always open instead of gated behind a JS toggle. */.site-nav{min-height:64px;position:fixed;top:0;left:0;right:0;transition:transform .24s ease;z-index:20;display:flex;align-items:center;gap:12px;margin:8px 16px;padding:8px 10px 8px 24px;background:#fbfafdF2;box-shadow:0 16px 45px -30px #2c123f99,0 1px 0 #fff inset;border:1px solid #e7deec;border-radius:18px;overflow:visible;backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px)}.site-nav::before{content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;background:linear-gradient(180deg,var(--pdb-purp-orchid),var(--pdb-purp-action) 58%,var(--pdb-status-danger-dot)) left/5px 100% no-repeat}.site-nav__brand{display:flex;align-items:center;padding:6px 0}.site-nav__brand img{width:78px;height:28px}.site-nav__menus{display:flex;align-items:center;gap:4px;margin-left:auto;font-size:13px;color:#5f5369}.site-nav__toggle{display:none}.nav-menu{position:relative}.nav-menu__trigger{display:flex;align-items:center;gap:8px;min-height:42px;padding:0 14px;border-radius:11px;background:transparent;color:#4e4258;font-size:13px;font-weight:650;letter-spacing:-.01em}.nav-menu__trigger:hover,.nav-menu__trigger[aria-expanded=true]{background:#f0e9f7;color:#6d2ab7}.nav-menu__trigger--plus{color:#7130c5}.nav-menu__plus{display:inline-flex;align-items:baseline;gap:2px}.nav-menu__plus span{font-size:17px;line-height:0;color:#a35be4}.nav-menu__trigger svg{width:10px;height:7px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;transition:transform .18s ease}.nav-menu__trigger[aria-expanded=true] svg{transform:rotate(180deg)}.site-nav__brand .site-nav__brand-white{display:none;object-fit:contain}.nav-menu__panel{--menu-bg:#fff;--menu-text:#21172c;--menu-muted:#786b82;--menu-border:#e8ddec;--menu-accent:#7433c5;--menu-hover:#f7f2fa;position:fixed;top:80px;left:50%;width:min(1160px,calc(100vw - 32px));max-height:calc(100dvh - 96px);overflow:auto;padding:0;border:1px solid var(--menu-border);border-radius:26px;background:var(--menu-bg);color:var(--menu-text);box-shadow:0 38px 95px -38px #210b38c7,0 10px 28px -20px #210b387d;transform:translateX(-50%)}.nav-menu__panel--plus{--menu-bg:#160b23;--menu-text:#fff;--menu-muted:#c6b7d1;--menu-border:#ffffff1c;--menu-accent:#d6a5ff;--menu-hover:#ffffff0c;background:radial-gradient(circle at 18% 4%,#843bd34d,transparent 38%),linear-gradient(145deg,#13071f,#251039)}.nav-story{display:grid;grid-template-columns:minmax(300px,.88fr) minmax(0,1.55fr);min-height:396px}.nav-story__intro{position:relative;display:flex;flex-direction:column;justify-content:flex-end;min-width:0;padding:38px;overflow:hidden;border-right:1px solid var(--menu-border);background:radial-gradient(circle at 25% 4%,#fff 0,transparent 38%),linear-gradient(145deg,#f8f2fc,#eee2f7)}.nav-menu__panel--plus .nav-story__intro{background:radial-gradient(circle at 20% 0,#7433c560,transparent 43%),linear-gradient(155deg,#21102f,#170a24)}.nav-story__mark{position:absolute;top:-42px;right:-54px;width:250px;height:250px;opacity:.075;transform:rotate(9deg);pointer-events:none}.nav-menu__panel--plus .nav-story__mark{filter:brightness(0) invert(1);opacity:.09}.nav-story__eyebrow{position:relative;margin-bottom:auto;font-size:11px;line-height:1;font-weight:800;letter-spacing:.105em;text-transform:uppercase;color:var(--menu-accent)}.nav-story__intro .nav-story__title{position:relative;max-width:9.5ch;margin:72px 0 0;font-size:clamp(32px,3.2vw,46px);line-height:.98;font-weight:680;letter-spacing:-.052em}.nav-story__intro p{position:relative;max-width:29ch;margin-top:18px;font-size:14px;line-height:1.5;color:var(--menu-muted)}.nav-story__chapters{display:flex;flex-direction:column;min-width:0;padding:13px 24px 15px}.nav-story__chapter{display:grid;grid-template-columns:32px minmax(0,1fr) 24px;align-items:center;gap:16px;flex:1;min-height:58px;padding:10px 12px;border-bottom:1px solid var(--menu-border);border-radius:12px;transition:background-color .17s ease,color .17s ease}.nav-story__chapter:last-child{border-bottom-color:transparent}.nav-story__chapter:hover,.nav-story__chapter:focus-visible{background:var(--menu-hover)}.nav-story__chapter:focus-visible{outline-offset:-2px}.nav-story__number{align-self:start;padding-top:4px;font-size:10px;line-height:1;font-weight:780;letter-spacing:.08em;color:var(--menu-accent)}.nav-story__copy{display:block;min-width:0}.nav-story__copy strong{display:block;font-size:17px;line-height:1.2;font-weight:670;letter-spacing:-.025em}.nav-story__copy>span{display:block;margin-top:4px;font-size:13px;line-height:1.3;font-weight:500;letter-spacing:-.005em;color:var(--menu-muted)}.nav-story__arrow{justify-self:end;font-size:17px;color:var(--menu-accent);transition:transform .17s ease}.nav-story__chapter:hover .nav-story__arrow,.nav-story__chapter:focus-visible .nav-story__arrow{transform:translateX(4px)}.site-nav__contact{display:inline-flex;align-items:center;gap:8px;min-height:42px;margin-left:6px;padding:0 17px;border-radius:12px;background:linear-gradient(115deg,#6e2ebf,#8d4bd4);box-shadow:0 10px 22px -15px #5d159c;color:#fff;font-size:13px;font-weight:700;white-space:nowrap;transition:transform .16s ease,box-shadow .16s ease}.site-nav__contact:hover{transform:translateY(-1px);box-shadow:0 13px 26px -15px #5d159c}.site-nav__contact span{font-size:12px}footer.site-footer{--night:#10071b}footer.site-footer{position:relative;overflow:hidden;padding:0 max(calc((100vw - 1120px)/2),28px);border:0;background:radial-gradient(circle at 16% -45%,#7130aa70,transparent 44%),var(--night);color:#fff}footer.site-footer::before{content:"";position:absolute;inset:0 0 auto;height:3px;background:linear-gradient(90deg,#7130c5,#b678f0 52%,#7130c5)}.footer-main{position:relative;z-index:1;min-height:132px;display:flex;align-items:center;justify-content:space-between;gap:40px}.footer-brand{display:flex;align-items:center;gap:22px;min-width:0}.footer-brand img{width:88px;height:32px;filter:brightness(0) invert(1);opacity:1}.footer-brand>span{padding-left:22px;border-left:1px solid #ffffff24;font-size:13px;line-height:1.45;font-weight:500;color:#c8b9d4}.footer-actions{display:flex;align-items:center;gap:24px;flex:none}.footer-actions a{font-size:13px;font-weight:650;color:#cdbdde;text-decoration:none}.footer-actions a:hover{color:#fff}.footer-cta{display:inline-flex;align-items:center;gap:9px;padding:12px 18px;border:1px solid #c996ff55;border-radius:999px;background:linear-gradient(115deg,#7130c5,#8d4bd4);box-shadow:0 12px 28px -18px #c896ff;color:#fff!important}
.footer-legal{position:relative;z-index:1;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 0 26px;border-top:1px solid #ffffff1a;font-size:12px;color:#a996bc}
.footer-legal nav{display:flex;gap:22px}
.footer-legal a{font-weight:600;color:#cdbdde;text-decoration:none}
.footer-legal a:hover{color:#fff}
@media(max-width:560px){.footer-legal{flex-direction:column;align-items:flex-start;gap:4px}.footer-legal nav{gap:0 24px}.footer-legal a{display:inline-flex;align-items:center;min-height:44px}}.footer-cta:hover{background:linear-gradient(115deg,#7e39d3,#9a59e1)}.nav-menu>summary.nav-menu__trigger{list-style:none;cursor:pointer}.nav-menu>summary.nav-menu__trigger::-webkit-details-marker{display:none}.nav-menu>summary.nav-menu__trigger::marker{content:''}.nav-menu[open]>summary.nav-menu__trigger{background:#f0e9f7;color:#6d2ab7}.nav-menu[open]>summary.nav-menu__trigger svg{transform:rotate(180deg)}body{padding-top:88px}
.site-nav a,footer.site-footer a{text-decoration:none}.site-nav__toggle-input,.site-nav__toggle{display:none}
@media(max-width:850px){.resource-layout{grid-template-columns:1fr;gap:28px}.resource-contents{position:static;border-bottom:1px solid var(--pdb-purp-mist);padding-bottom:24px}.resource-contents ol{display:flex;flex-wrap:wrap;gap:12px 24px}.resource-contents li+li{margin:0}.resource-feature{grid-template-columns:1fr;gap:30px;padding:32px}.resource-feature figure{max-width:600px}.resource-hero{padding-top:36px}.resource-wrap{padding-left:24px;padding-right:24px}}
@media(max-width:560px){.resource-wrap{padding:0 20px}.resource-breadcrumb{margin-top:24px;font-size:12px}.resource-hero{padding:32px 0}.resource-hero h1{font-size:38px;line-height:1.12}.resource-byline time{display:block;margin-left:0}.resource-body{font-size:17px;line-height:1.7}.resource-body h2{font-size:27px}.resource-summary,.resource-example{padding:22px}.resource-feature{padding:24px;margin-bottom:42px}.resource-entry{grid-template-columns:1fr;gap:14px}.resource-footer__inner{display:block}.resource-footer .resource-button{margin-top:25px}.resource-layout{padding-bottom:65px}.resource-body table{min-width:0;font-size:15px}.resource-body td:first-child{min-width:0;width:34%}.resource-body td,.resource-body th{padding:14px 12px}.site-nav{height:auto;min-height:56px;max-height:calc(100dvh - 16px);margin:8px 10px;padding:8px 10px 8px 18px;flex-wrap:wrap;gap:0;border-radius:16px}.site-nav__brand img{width:68px;height:25px}.site-nav__toggle-input{display:block;position:absolute;width:1px;height:1px;opacity:0;pointer-events:none}.site-nav__toggle{display:flex;align-items:center;gap:9px;min-height:44px;margin-left:auto;padding:0 10px;border-radius:10px;background:transparent;color:#55475f;font-size:12px;font-weight:700;cursor:pointer}.site-nav__toggle:hover,.site-nav__toggle-input:checked+.site-nav__toggle{background:#f0e9f7;color:#6d2ab7}.site-nav__toggle-input:focus-visible+.site-nav__toggle{box-shadow:0 0 0 2px #6d2ab7}.site-nav__toggle-icon{position:relative;display:block;width:18px;height:14px}.site-nav__toggle-icon i{position:absolute;left:0;width:18px;height:1.5px;border-radius:2px;background:currentColor;transition:top .18s ease,transform .18s ease}.site-nav__toggle-icon i:first-child{top:3px}.site-nav__toggle-icon i:last-child{top:10px}.site-nav__toggle-input:checked+.site-nav__toggle .site-nav__toggle-icon i:first-child{top:7px;transform:rotate(45deg)}.site-nav__toggle-input:checked+.site-nav__toggle .site-nav__toggle-icon i:last-child{top:7px;transform:rotate(-45deg)}.site-nav nav.site-nav__menus,.site-nav .site-nav__contact{display:none}.site-nav__toggle-input:checked~nav.site-nav__menus{display:flex}.site-nav__toggle-input:checked~.site-nav__contact,.site-nav__toggle-input:checked~nav .site-nav__contact{display:flex}.site-nav nav.site-nav__menus{flex:0 0 100%;width:100%;max-height:calc(100dvh - 80px);margin:8px 0 0;padding:8px 0 2px;border-top:1px solid #e7deec;overflow-y:auto;overscroll-behavior:contain;flex-direction:column;align-items:stretch;gap:3px}.nav-menu{width:100%}.nav-menu__trigger{width:100%;min-height:45px;justify-content:space-between;padding:0 10px;font-size:15px}.nav-menu__panel{position:static;width:100%;max-height:none;margin:3px 0 8px;border-radius:19px;box-shadow:none;transform:none}.nav-story{display:block;min-height:0}.nav-story__intro{min-height:180px;padding:22px 20px 24px;border-right:0;border-bottom:1px solid var(--menu-border)}.nav-story__mark{top:-34px;right:-28px;width:165px;height:165px}.nav-story__intro .nav-story__title{margin-top:46px;font-size:30px}.nav-story__intro p{max-width:31ch;margin-top:13px;font-size:12px}.nav-story__chapters{padding:6px 8px 9px}.nav-story__chapter{grid-template-columns:26px minmax(0,1fr) 18px;gap:10px;min-height:66px;padding:10px 8px;border-radius:10px}.nav-story__copy strong{font-size:15px}.nav-story__copy>span{font-size:12px;margin-top:3px}.nav-story__chapter:hover .nav-story__arrow,.nav-story__chapter:focus-visible .nav-story__arrow{transform:none}.site-nav__contact{justify-content:center;min-height:44px;margin:5px 0 2px;border-radius:11px;font-size:14px}footer.site-footer{padding:0 24px}.footer-main{min-height:0;padding:32px 0 28px;align-items:flex-start;flex-direction:column;gap:26px}.footer-brand{width:100%;gap:18px}.footer-brand>span{padding-left:18px}.footer-actions{width:100%;justify-content:space-between;gap:18px}body{padding-top:76px}}
@media print{.site-nav,.resource-contents,.site-footer,.resource-related{display:none}.resource-layout{display:block}.resource-hero h1{font-size:30px}.resource-body{font-size:11pt}.resource-wrap{max-width:none;padding:0}.resource-table-wrap{overflow:visible}.resource-body table{min-width:0}.resource-body a{color:inherit}}
/* Topic links reuse the shared PURP palette and keep the library usable without scripts. */
.resource-topics{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px}
.resource-topics a{display:inline-flex;align-items:center;min-height:44px;padding:10px 16px;border:1px solid var(--pdb-purp-lavender);border-radius:10px;background:var(--pdb-purp-pearl);color:var(--pdb-purp-royal);font-size:15px;font-weight:650;text-decoration:none}
.resource-topics a:hover{border-color:var(--pdb-purp-primary)}
.resource-topic-intro{max-width:65ch;margin:18px 0 10px;font-size:17px;line-height:1.6;color:var(--pdb-ink-800)}