/* pwp-authored-additional-v1-20261028: technical foundation only */
@layer pwp-runtime-foundation {
  :root {
    --bg:#EFF6FF; --text:#1E40AF;
    --surface:#FFFFFF; --text-muted:#475569;
    --primary:#1E3A8A; --primary-fg:#FFFFFF;
    --border:#BFDBFE;
  }
  *, *::before, *::after { box-sizing:border-box; }
  html { scroll-behavior:smooth; }
  body { margin:0; background:var(--bg); color:var(--text); }
  img, video { max-inline-size:100%; block-size:auto; }
  button, input, select, textarea { font:inherit; }
  button, summary { cursor:pointer; }
  :where(a,button,input,select,textarea,summary):focus-visible { outline:2px solid currentColor; outline-offset:4px; }
  .skip { position:fixed; inset-block-start:-10rem; inset-inline-start:1rem; z-index:10000; padding:.75rem; background:var(--bg); color:var(--text); }
  .skip:focus { inset-block-start:1rem; }
  /* Legal prose is a separate utility; never constrain the author's main site. */
  .legal-container { max-inline-size:76ch; margin-inline:auto; padding:clamp(1rem,4vw,3rem); }
  .legal-body { line-height:1.7; overflow-wrap:anywhere; }
  .legal-body p + p, .legal-body section + section { margin-block-start:1.25em; }
  .legal-body table { display:block; overflow-x:auto; max-inline-size:100%; }
  .legal-body h1, .legal-body h2, .legal-body h3, .legal-title { line-height:1.2; }
  .cookie-banner { position:fixed; inset-inline:1rem; inset-block-end:1rem; z-index:9999; max-inline-size:34rem; padding:1rem; border:1px solid var(--border); background:var(--bg); color:var(--text); }
  .cookie-text { font:14px/1.5 system-ui,sans-serif; }
  .cookie-actions { display:flex; flex-wrap:wrap; gap:.75rem; margin-block-start:.75rem; }
  .cookie-actions button { min-block-size:44px; padding:.6rem 1rem; border:1px solid var(--border); background:var(--surface); color:var(--text); }
  .cookie-actions [data-action="accept-cookie"] { background:var(--primary); color:var(--primary-fg); }
}
/* Required state, not a visual layout. Expanded pages may be grid/flex/block. */
[hidden], .cookie-banner.hidden { display:none !important; }
@media(prefers-reduced-motion:reduce) {
  html { scroll-behavior:auto; }
  *, *::before, *::after { animation-duration:.01ms !important; animation-iteration-count:1 !important; transition-duration:.01ms !important; }
}

/* === AUTHOR-OWNED SITE STYLES === */
:root{--paper:#f8f8f4;--white:#fff;--ink:#243d39;--muted:#63706a;--line:#d7ddd5;--red:#963f31;--pale:#e8ede7;--heading:"Source Serif 4",Georgia,serif;--body:"Manrope",Arial,sans-serif}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--body);font-size:16px;line-height:1.7}
a{color:inherit;text-underline-offset:5px}
a:hover{color:var(--red)}
button,select{font:inherit}
a:focus-visible,summary:focus-visible,button:focus-visible{outline:3px solid var(--red);outline-offset:5px}
img{display:block;width:100%;object-fit:cover}
[hidden]{display:none!important}
h1,h2,h3,p{margin-top:0}
h1,h2,h3{font-family:var(--heading);font-weight:400;line-height:1.12}
h1{font-size:clamp(42px,5.7vw,80px);letter-spacing:-.045em}
h2{font-size:clamp(32px,3.6vw,48px);letter-spacing:-.03em}
h3{font-size:27px;letter-spacing:-.02em}
p{margin-bottom:1.3em}
.wrap{width:min(1320px,calc(100% - 96px));margin-inline:auto}
.skip-link{position:absolute;left:20px;top:-100px;z-index:50;background:white;padding:12px}
.skip-link:focus{top:12px}
.site-header{background:var(--paper);border-bottom:1px solid var(--line);position:relative;z-index:20}
.header-inner{min-height:112px;display:flex;align-items:center;justify-content:space-between;gap:36px}
.wordmark{text-decoration:none;display:flex;flex-direction:column;flex-shrink:0;line-height:1}
.wordmark strong{font-family:var(--heading);font-size:35px;font-weight:500;letter-spacing:-1.8px}
.wordmark span{font-size:10px;letter-spacing:2.2px;margin-top:9px}
.header-nav{display:flex;align-items:center;gap:32px;font-size:14px}
.header-nav>a{text-decoration:none}
.guide-menu{position:relative}
.guide-menu summary{cursor:pointer;padding:12px 0}
.guide-menu summary::marker{color:var(--red)}
.guide-menu .menu-panel{position:absolute;right:-90px;top:46px;width:330px;padding:16px 24px;background:var(--paper);border:1px solid var(--line);box-shadow:0 14px 30px #243d3914}
.menu-panel a{display:block;text-decoration:none;padding:10px 0;border-bottom:1px solid var(--line)}
.menu-panel a:last-child{border-bottom:0}
.languages{display:flex;gap:12px;border-left:1px solid var(--line);padding-left:24px;font-size:12px}
.languages a{text-decoration:none}
.languages [aria-current]{text-decoration:underline}
.hero{position:relative;isolation:isolate;min-height:650px;display:flex;align-items:flex-end;color:white;background:#374a43}
.hero>img{position:absolute;inset:0;height:100%;z-index:-2;object-position:50% 46%}
.hero:after{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(180deg,#14242105 15%,#14242130 40%,#142421cf 100%)}
.hero-content{padding-top:170px;padding-bottom:56px;display:grid;grid-template-columns:1.7fr 1fr;align-items:end;gap:50px}
.kicker{font-size:11px;letter-spacing:1.7px;text-transform:uppercase;font-weight:700;margin-bottom:20px}
.hero h1{max-width:800px;margin-bottom:0;font-size:clamp(52px,6.2vw,88px)}
.hero-intro{max-width:330px;padding-bottom:6px}
.hero-intro p{font-size:16px;line-height:1.8}
.text-link{display:inline-block;text-decoration:none;border-bottom:1px solid currentColor;padding-bottom:5px;font-size:14px;font-weight:600}
.text-link:hover{color:var(--red)}
.hero .text-link:hover{color:#fff}
.arrow{margin-left:20px}
.hero-caption{font-size:11px;color:var(--muted);padding-block:12px;border-bottom:1px solid var(--line)}
.intro-section{padding-block:76px}
.section-heading{display:grid;grid-template-columns:1fr 1fr;gap:70px;align-items:start;margin-bottom:38px}
.section-heading h2{max-width:480px;margin-bottom:0}
.section-heading>p{max-width:520px;color:var(--muted);padding-top:7px}
.topic-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0 38px}
.topic{border-top:1px solid var(--line);padding:28px 0 34px;text-decoration:none;display:block}
.topic .topic-type{font-size:11px;color:var(--red);margin-bottom:12px;letter-spacing:1px;text-transform:uppercase}
.topic h3{margin-bottom:14px}
.topic p{color:var(--muted);font-size:14px;line-height:1.75;margin-bottom:18px}
.topic .read{font-size:13px;font-weight:600}
.topic:hover h3{text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:5px}
.before-band{background:var(--pale);padding-block:60px}
.before-grid{display:grid;grid-template-columns:1.25fr 1fr 1fr;gap:55px}
.before-grid h2{font-size:38px}
.before-grid h3{font-family:var(--body);font-size:16px;font-weight:600;margin:3px 0 15px}
.before-grid p{font-size:14px;color:#4e6058;margin-bottom:14px}
.page-head{padding-top:54px;padding-bottom:38px;border-bottom:1px solid var(--line)}
.breadcrumb{font-size:12px;color:var(--muted);margin-bottom:30px}
.breadcrumb a{text-decoration:none}
.page-head h1{max-width:1000px;margin-bottom:24px}
.page-deck{font-size:20px;line-height:1.65;max-width:790px;color:var(--muted);margin-bottom:0}
.article-layout{display:grid;grid-template-columns:minmax(0,850px) minmax(200px,280px);gap:clamp(35px,7vw,110px);padding-block:44px 85px}
.article-body{min-width:0}
.article-body h2{font-size:34px;margin:40px 0 18px}
.article-body h2:first-child{margin-top:0}
.article-body h3{font-size:25px;margin:28px 0 12px}
.article-body p,.article-body li{font-size:16px;line-height:1.85}
.article-body ul,.article-body ol{padding-left:24px}
.article-body li{padding-left:7px;margin-bottom:14px}
.article-photo{margin:0 0 35px}
.article-photo img{aspect-ratio:1.7}
figcaption{font-size:11px;color:var(--muted);padding-top:10px}
.article-aside{border-top:2px solid var(--ink);padding-top:20px;align-self:start}
.article-aside h2{font-family:var(--body);font-weight:600;font-size:14px;margin-bottom:15px}
.article-aside p{font-size:13px;color:var(--muted)}
.article-aside a{display:block;font-size:13px;padding:12px 0;border-bottom:1px solid var(--line);text-decoration:none}
.note{background:var(--pale);padding:24px 28px;margin:30px 0}
.note p:last-child{margin-bottom:0}
.note strong{display:block;font-size:14px;margin-bottom:8px}
.steps{list-style:none;padding:0!important;margin:28px 0;counter-reset:walk}
.steps li{counter-increment:walk;border-top:1px solid var(--line);padding:22px 0 22px 55px;position:relative}
.steps li:before{content:counter(walk,decimal-leading-zero);position:absolute;left:0;top:22px;font-size:12px;color:var(--red);font-weight:700}
.steps h2{font-size:28px;margin:0 0 12px!important}
.source-note{font-size:13px!important;border-top:1px solid var(--line);padding-top:22px;color:var(--muted)}
.faq-list{margin-top:28px}
.faq-list details{border-top:1px solid var(--line);padding:20px 0}
.faq-list details:last-child{border-bottom:1px solid var(--line)}
.faq-list summary{font-size:16px;font-weight:600;cursor:pointer;padding-right:20px}
.faq-list details p{padding:18px 0 0 20px;margin-bottom:0}
.contact-grid{display:grid;grid-template-columns:1.1fr 1fr;gap:100px;padding-block:55px 90px}
.contact-grid h2{font-size:32px}
.contact-grid address{font-style:normal}
.contact-grid a{overflow-wrap:anywhere}
.contact-line{border-top:1px solid var(--line);padding-block:18px}
.contact-line span{display:block;font-size:12px;color:var(--muted);margin-bottom:7px}
.contact-context{background:var(--pale);padding:36px;align-self:start}
.contact-context p{font-size:15px}
.site-footer{background:var(--ink);color:#f2f2e9;padding:50px 0 24px}
.footer-top{display:grid;grid-template-columns:1fr 1fr 1fr;gap:55px;padding-bottom:36px}
.footer-brand{font-family:var(--heading);font-size:32px;line-height:1.1;margin-bottom:20px}
.site-footer p,.site-footer address{font-style:normal;font-size:12px;line-height:1.9;color:#d3ddd6}
.site-footer a{overflow-wrap:anywhere}
.footer-title{font-size:12px;font-weight:700;margin-bottom:12px}
.footer-links{display:flex;flex-wrap:wrap;gap:9px 22px}
.footer-links a{font-size:12px}
.footer-bottom{border-top:1px solid #ffffff30;padding-top:22px;display:flex;justify-content:space-between;gap:30px;align-items:start}
.footer-bottom p{margin:0;flex-shrink:0}
.site-footer a:hover{color:white}
@media(min-width:901px){.text-link .arrow{display:inline-block;transition:transform .2s}.text-link:hover .arrow{transform:translateX(4px)}}
@media(max-width:1000px){.wrap{width:calc(100% - 56px)}.header-nav{gap:20px}.hero-content{grid-template-columns:1.5fr 1fr;gap:30px}.topic-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.contact-grid{gap:45px}.before-grid{gap:30px}.footer-top{gap:30px}.wordmark strong{font-size:30px}}
@media(max-width:700px){.wrap{width:calc(100% - 36px)}.header-inner{flex-wrap:wrap;gap:16px;padding-block:20px}.wordmark strong{font-size:30px}.wordmark span{font-size:9px}.header-nav{width:100%;justify-content:space-between;gap:12px;font-size:13px}.languages{font-size:11px;padding-left:12px;gap:9px}.guide-menu .menu-panel{left:-72px;right:auto;top:45px;width:min(330px,calc(100vw - 36px))}.hero{min-height:650px}.hero-content{grid-template-columns:1fr;gap:26px;padding-top:160px;padding-bottom:36px}.hero h1{font-size:56px}.hero-intro{max-width:360px}.hero-intro p{font-size:14px;margin-bottom:14px}.hero>img{object-position:58% center}.hero:after{background:linear-gradient(180deg,#14242105,#142421db)}.hero-caption{font-size:10px}.intro-section{padding-block:48px}.section-heading{grid-template-columns:1fr;gap:20px}.section-heading>p{margin-bottom:0}.topic-grid{grid-template-columns:1fr}.topic{padding-block:24px}.topic h3{font-size:28px}.before-grid{grid-template-columns:1fr;gap:20px}.before-grid h2{margin-bottom:0}.before-band{padding-block:40px}.page-head{padding-top:30px}.page-head h1{font-size:44px}.page-deck{font-size:18px}.article-layout{grid-template-columns:1fr;gap:35px;padding-block:30px 55px}.article-body h2{font-size:30px}.article-photo img{aspect-ratio:1.25}.article-aside{padding-top:20px}.note{padding:22px}.contact-grid{grid-template-columns:1fr;gap:30px;padding-block:35px 55px}.contact-context{padding:26px}.footer-top{grid-template-columns:1fr;gap:25px}.footer-bottom{flex-direction:column;gap:16px}.site-footer{padding-top:38px}.breadcrumb{margin-bottom:22px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}

/* === OPEN NAVIGATION SURFACE SAFETY === */
/* Position, shadows, borders and scroll treatment belong to the author.
   Only an OPEN mobile menu gets a mandatory opaque readable surface. */
header.site-header[data-pwp-nav-open] {
  background-color: var(--bg, #ffffff) !important;
  isolation: isolate;
}
[data-pwp-mobile-menu][data-pwp-menu-open] {
  background-color: var(--bg, #ffffff);
  color: var(--text, #0f172a);
  max-block-size: var(--pwp-nav-available-height, calc(100dvh - 6rem));
  overflow-y: auto;
  overscroll-behavior: contain;
}
.pwp-source-note {
  margin-block-start: 1rem;
  font-size: .875em;
  line-height: 1.5;
}
.pwp-source-note a { text-decoration: underline; text-underline-offset: .2em; }