/* Playbright - mobile-first, system fonts, no external requests. */
:root{
  --ink:#16201d; --ink-2:#44524e; --ink-3:#6b7a75;
  --bg:#fffdf9; --bg-2:#f5f1e8; --bg-3:#ebe6da;
  --line:#dcd6c8; --line-2:#c9c2b0;
  --brand:#0f5c4d; --brand-d:#0a4438; --brand-l:#e6f0ec;
  --accent:#ffd25a; --accent-d:#8a6b00;
  --warn:#9a3412; --warn-bg:#fdf1e7; --warn-line:#f0c9a8;
  --ok:#14532d; --ok-bg:#eaf4ec;
  --info-bg:#eef3fb; --info-line:#c6d7ef; --info:#1e3a6b;
  --radius:12px; --radius-s:8px;
  --w:74rem; --prose:40rem;
  --shadow:0 1px 2px rgba(20,35,30,.06),0 4px 16px rgba(20,35,30,.05);
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  --serif:ui-serif,Georgia,Cambria,"Times New Roman",serif;
}
@media (prefers-color-scheme:dark){
  :root{
    --ink:#e9eeec; --ink-2:#b4c0bc; --ink-3:#8b9995;
    --bg:#111614; --bg-2:#18201d; --bg-3:#222c28;
    --line:#2c3833; --line-2:#3c4a45;
    --brand:#5cc3a9; --brand-d:#7ad3bb; --brand-l:#16302a;
    --accent:#ffd25a; --accent-d:#ffd25a;
    --warn:#ffb4a0; --warn-bg:#2b1a13; --warn-line:#4d2e1f;
    --ok:#9ae6b4; --ok-bg:#15241a;
    --info-bg:#151e2c; --info-line:#26374f; --info:#a9c7f2;
    --shadow:0 1px 2px rgba(0,0,0,.4);
  }
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{animation-duration:.01ms!important;transition-duration:.01ms!important}}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--font);
  font-size:1.0625rem;line-height:1.65;-webkit-font-smoothing:antialiased}
img,svg,video{max-width:100%;height:auto}
h1,h2,h3,h4{line-height:1.2;font-weight:700;letter-spacing:-.015em;margin:0 0 .5em}
h1{font-size:clamp(1.85rem,1.25rem + 2.6vw,2.7rem)}
h2{font-size:clamp(1.4rem,1.15rem + 1.2vw,1.8rem)}
h3{font-size:1.18rem}
h4{font-size:1.03rem}
p,ul,ol,dl,table{margin:0 0 1.1em}
a{color:var(--brand);text-underline-offset:.16em;text-decoration-thickness:.07em}
a:hover{color:var(--brand-d)}
:focus-visible{outline:3px solid var(--brand);outline-offset:2px;border-radius:3px}
.wrap{width:100%;max-width:var(--w);margin:0 auto;padding:0 1.15rem}
.skip{position:absolute;left:-9999px;top:0;background:var(--brand);color:#fff;padding:.7rem 1rem;z-index:99}
.skip:focus{left:.5rem;top:.5rem}
hr{border:0;border-top:1px solid var(--line);margin:2rem 0}

/* header */
.site-head{border-bottom:1px solid var(--line);background:var(--bg);position:sticky;top:0;z-index:40}
.head-inner{display:flex;align-items:center;gap:.75rem;min-height:3.65rem;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:.5rem;font-weight:800;font-size:1.16rem;
  text-decoration:none;color:var(--ink);letter-spacing:-.02em;margin-right:auto}
.brand span span{color:var(--brand)}
.logo{flex:none}
.nav-toggle{display:inline-flex;align-items:center;gap:.45rem;background:var(--bg-2);color:var(--ink);
  border:1px solid var(--line);border-radius:var(--radius-s);padding:.45rem .7rem;font:inherit;
  font-size:.92rem;font-weight:600;cursor:pointer}
.nav-bars,.nav-bars::before,.nav-bars::after{display:block;width:16px;height:2px;background:currentColor;position:relative}
.nav-bars::before,.nav-bars::after{content:"";position:absolute;left:0}
.nav-bars::before{top:-5px}.nav-bars::after{top:5px}
.primary-nav{display:none;width:100%;padding-bottom:.6rem}
.primary-nav.open{display:block}
.primary-nav ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:.1rem}
.primary-nav a{display:block;padding:.6rem .55rem;border-radius:var(--radius-s);text-decoration:none;
  color:var(--ink);font-weight:600;font-size:.98rem}
.primary-nav a:hover{background:var(--bg-2)}
.primary-nav a[aria-current]{color:var(--brand);background:var(--brand-l)}
@media (min-width:62rem){
  .nav-toggle{display:none}
  .primary-nav{display:block;width:auto;padding:0}
  .primary-nav ul{flex-direction:row;gap:.15rem}
  .primary-nav a{padding:.45rem .6rem;font-size:.93rem}
}

/* hero */
.hero{background:linear-gradient(175deg,var(--brand-l),var(--bg) 70%);border-bottom:1px solid var(--line)}
.hero-inner{padding:2.5rem 1.15rem 2.2rem;max-width:58rem}
.hero-kicker{margin:0 0 .5rem;text-transform:uppercase;letter-spacing:.1em;font-size:.73rem;
  font-weight:700;color:var(--brand)}
.hero h1{margin-bottom:.45em;max-width:20ch}
.hero-sub{font-size:1.14rem;color:var(--ink-2);max-width:56ch;margin-bottom:1.4rem}
.hero-actions{display:flex;flex-wrap:wrap;gap:.6rem;margin-bottom:1.9rem}
.btn{display:inline-block;padding:.68rem 1.15rem;border-radius:var(--radius-s);font-weight:650;
  text-decoration:none;border:1px solid var(--line-2);color:var(--ink);background:var(--bg);font-size:.97rem}
.btn:hover{border-color:var(--brand);color:var(--brand)}
.btn-primary{background:var(--brand);border-color:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-d);border-color:var(--brand-d);color:#fff}
.hero-stats{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,1fr);gap:.8rem;max-width:34rem}
.hero-stats li{display:flex;flex-direction:column}
.hero-stats strong{font-size:1.5rem;color:var(--brand);line-height:1.1}
.hero-stats span{font-size:.78rem;color:var(--ink-3);line-height:1.3}

/* home hubs */
.home-hubs{padding:2.4rem 0 .6rem}
.home-hubs>h2{font-size:1.25rem}
.hub-grid{list-style:none;margin:0 0 1rem;padding:0;display:grid;gap:.8rem;grid-template-columns:1fr}
@media (min-width:36rem){.hub-grid{grid-template-columns:1fr 1fr}}
@media (min-width:62rem){.hub-grid{grid-template-columns:repeat(3,1fr)}}
.hub-card a{display:flex;flex-direction:column;gap:.3rem;height:100%;padding:1.05rem;border:1px solid var(--line);
  border-radius:var(--radius);background:var(--bg);text-decoration:none;color:var(--ink);box-shadow:var(--shadow)}
.hub-card a:hover{border-color:var(--brand);background:var(--brand-l)}
.hub-icon{color:var(--brand)}
.hub-title{font-weight:700;font-size:1.05rem}
.hub-desc{color:var(--ink-2);font-size:.92rem;line-height:1.5}
.hub-count{margin-top:auto;padding-top:.5rem;font-size:.78rem;color:var(--ink-3);font-weight:600;
  text-transform:uppercase;letter-spacing:.06em}
.home-prose{max-width:var(--prose);padding:1.5rem 0 1rem}

/* layout */
.crumbs{padding:1rem 0 .2rem;font-size:.85rem;color:var(--ink-3)}
.crumbs ol{list-style:none;display:flex;flex-wrap:wrap;gap:.3rem;margin:0;padding:0}
.crumbs li+li::before{content:"/";margin-right:.35rem;color:var(--line-2)}
.crumbs a{color:var(--ink-3)}
.layout{display:block;padding-bottom:1rem}
.doc{max-width:var(--prose);padding:.7rem 0 1.5rem;min-width:0}
.doc.wide{max-width:64rem}
@media (min-width:64rem){
  .layout{display:grid;grid-template-columns:minmax(0,1fr) 16.5rem;gap:3.2rem;align-items:start}
  .sidebar{position:sticky;top:4.6rem;padding-top:2.2rem}
}
.kicker{margin:0 0 .5rem;font-size:.78rem;text-transform:uppercase;letter-spacing:.09em;font-weight:700}
.kicker a{color:var(--brand);text-decoration:none}
.kicker a:hover{text-decoration:underline}
.doc-head{margin-bottom:1.3rem}
.standfirst{font-size:1.12rem;color:var(--ink-2);line-height:1.55;margin-bottom:.9rem}
.page-meta{display:flex;flex-wrap:wrap;gap:.35rem .9rem;font-size:.81rem;color:var(--ink-3);
  border-top:1px solid var(--line);padding-top:.7rem;margin:0}

/* answer box + key facts */
.answer-box{background:var(--brand-l);border-left:4px solid var(--brand);border-radius:0 var(--radius-s) var(--radius-s) 0;
  padding:.95rem 1.1rem;margin:0 0 1.4rem}
.answer-label{margin:0 0 .25rem;font-size:.72rem;text-transform:uppercase;letter-spacing:.1em;
  font-weight:700;color:var(--brand)}
.answer-box p:last-child{margin:0;font-size:1.04rem}
.key-facts{border:1px solid var(--line);border-radius:var(--radius);padding:1rem 1.1rem;margin:0 0 1.5rem;background:var(--bg-2)}
.key-facts h2{font-size:.76rem;text-transform:uppercase;letter-spacing:.1em;color:var(--ink-3);margin-bottom:.6rem}
.key-facts dl{margin:0;display:grid;gap:.5rem}
.key-facts dl>div{display:grid;grid-template-columns:1fr;gap:.05rem;padding-bottom:.5rem;border-bottom:1px solid var(--line)}
.key-facts dl>div:last-child{border:0;padding-bottom:0}
@media (min-width:32rem){.key-facts dl>div{grid-template-columns:11rem 1fr;gap:.9rem}}
.key-facts dt{font-weight:650;font-size:.9rem;color:var(--ink-2)}
.key-facts dd{margin:0;font-size:.95rem}

/* toc */
.toc{border:1px solid var(--line);border-radius:var(--radius);padding:.9rem 1.1rem;margin:0 0 1.8rem;background:var(--bg)}
.toc h2{font-size:.76rem;text-transform:uppercase;letter-spacing:.1em;color:var(--ink-3);margin-bottom:.45rem}
.toc ol{margin:0;padding-left:1.1rem;font-size:.94rem;display:grid;gap:.2rem}
.toc a{text-decoration:none}
.toc a:hover{text-decoration:underline}

/* prose */
.prose{font-size:1.0625rem}
.prose h2{margin-top:2.1rem;padding-top:.2rem;scroll-margin-top:4.5rem}
.prose h3{margin-top:1.6rem;scroll-margin-top:4.5rem;color:var(--ink)}
.prose h4{margin-top:1.3rem;color:var(--ink-2)}
.prose ul,.prose ol{padding-left:1.25rem}
.prose li{margin-bottom:.4em}
.prose li>ul,.prose li>ol{margin:.4em 0}
.prose blockquote{margin:1.4rem 0;padding:.2rem 0 .2rem 1.1rem;border-left:3px solid var(--accent);
  font-family:var(--serif);font-size:1.08rem;color:var(--ink-2)}
.prose code{background:var(--bg-3);padding:.1em .35em;border-radius:4px;font-size:.9em}
.prose strong{font-weight:680}
.fn a{text-decoration:none;font-weight:700;font-size:.72em;padding:0 .12em}

/* callouts */
.callout{margin:1.5rem 0;padding:1rem 1.15rem;border-radius:var(--radius);border:1px solid var(--line);
  background:var(--bg-2);font-size:1rem}
.callout>*:last-child{margin-bottom:0}
.callout-title{margin:0 0 .4rem;font-weight:700;font-size:.78rem;text-transform:uppercase;letter-spacing:.09em;color:var(--ink-3)}
.callout ul,.callout ol{padding-left:1.15rem;margin-bottom:0}
.callout-key{background:var(--brand-l);border-color:transparent;border-left:4px solid var(--brand)}
.callout-key .callout-title{color:var(--brand)}
.callout-warning{background:var(--warn-bg);border-color:var(--warn-line)}
.callout-warning .callout-title{color:var(--warn)}
.callout-tip{background:var(--ok-bg);border-color:transparent;border-left:4px solid var(--ok)}
.callout-tip .callout-title{color:var(--ok)}
.callout-data{background:var(--info-bg);border-color:var(--info-line)}
.callout-data .callout-title{color:var(--info)}
.callout-check{background:var(--bg-2);border-left:4px solid var(--accent)}
.callout-quote{font-family:var(--serif);font-size:1.05rem;background:transparent;border:0;border-left:3px solid var(--accent);border-radius:0}

/* tables */
.table-wrap{margin:1.7rem 0;padding:0}
.table-scroll{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);-webkit-overflow-scrolling:touch}
table{border-collapse:collapse;width:100%;font-size:.92rem;margin:0;min-width:32rem}
caption{text-align:left;font-weight:700;padding:.8rem 1rem .1rem;font-size:.98rem}
th,td{padding:.6rem .75rem;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
thead th{background:var(--bg-2);font-size:.8rem;text-transform:uppercase;letter-spacing:.05em;
  color:var(--ink-2);position:sticky;top:0;border-bottom:2px solid var(--line-2)}
tbody th{font-weight:650}
tbody tr:last-child th,tbody tr:last-child td{border-bottom:0}
tbody tr:hover{background:var(--bg-2)}
figcaption{font-size:.84rem;color:var(--ink-3);padding:.6rem .2rem 0;line-height:1.5}
.pvi-total{text-align:center}
.pvi-age{font-size:.85rem;color:var(--ink-2)}

/* cluster index / cards */
.cluster-index{list-style:none;margin:1.5rem 0;padding:0;display:grid;gap:.55rem}
.cluster-index a{display:block;padding:.85rem 1rem;border:1px solid var(--line);border-radius:var(--radius);
  text-decoration:none;color:var(--ink);background:var(--bg)}
.cluster-index a:hover{border-color:var(--brand);background:var(--brand-l)}
.ci-title{display:block;font-weight:680;color:var(--brand)}
.ci-desc{display:block;font-size:.9rem;color:var(--ink-2);line-height:1.5;margin-top:.15rem}
.card-grid{list-style:none;margin:1.6rem 0;padding:0;display:grid;gap:.8rem}
@media (min-width:44rem){.card-grid{grid-template-columns:1fr 1fr}}
.card{border:1px solid var(--line);border-radius:var(--radius);padding:1rem;background:var(--bg)}
.card h3{margin:0 0 .3rem;font-size:1.02rem}
.card h3 a{text-decoration:none}
.card p{margin:0;font-size:.92rem;color:var(--ink-2);line-height:1.5}

/* faq / sources / disclaimer */
.faqs{margin:2.5rem 0 0;padding-top:1.5rem;border-top:2px solid var(--line)}
.faq-item{padding:.9rem 0;border-bottom:1px solid var(--line)}
.faq-item h3{margin:0 0 .35rem;font-size:1.05rem}
.faq-a p:last-child{margin-bottom:0}
.faq-a{color:var(--ink-2)}
.sources{margin:2.3rem 0 0;padding-top:1.3rem;border-top:2px solid var(--line);font-size:.92rem}
.sources h2{font-size:1.05rem}
.source-list{list-style:none;padding:0;margin:0;display:grid;gap:.6rem;counter-reset:none}
.source-list li{display:flex;gap:.6rem;color:var(--ink-2);line-height:1.5}
.src-n{flex:none;width:1.45rem;height:1.45rem;border-radius:50%;background:var(--bg-3);color:var(--ink-2);
  display:grid;place-items:center;font-size:.76rem;font-weight:700}
.src-note{display:block;color:var(--ink-3);font-size:.88em}
.disclaimer{margin:2rem 0 0;padding:.9rem 1.05rem;background:var(--bg-2);border-radius:var(--radius);
  font-size:.88rem;color:var(--ink-2)}
.disclaimer p{margin:0}
.ext::after{content:"\2197";font-size:.72em;vertical-align:super;margin-left:.1em;opacity:.65}

/* side nav + related */
.side-nav h2{font-size:.78rem;text-transform:uppercase;letter-spacing:.09em;color:var(--ink-3);
  margin-bottom:.55rem;padding-bottom:.5rem;border-bottom:1px solid var(--line)}
.side-nav h2 a{color:var(--ink-3);text-decoration:none}
.side-nav h2 a:hover{color:var(--brand)}
.side-nav ul{list-style:none;margin:0;padding:0;display:grid;gap:.05rem;max-height:none}
.side-nav a{display:block;padding:.35rem .5rem;border-radius:6px;font-size:.9rem;text-decoration:none;
  color:var(--ink-2);line-height:1.4}
.side-nav a:hover{background:var(--bg-2);color:var(--brand)}
.side-nav a[aria-current]{background:var(--brand-l);color:var(--brand);font-weight:650}
@media (max-width:63.99rem){.sidebar{display:none}}
.related{margin:2.5rem 0 3rem;padding-top:1.5rem;border-top:2px solid var(--line)}
.related h2{font-size:1.05rem}
.related ul{list-style:none;margin:0;padding:0;display:grid;gap:.7rem}
@media (min-width:44rem){.related ul{grid-template-columns:1fr 1fr}}
.related a{display:block;padding:.85rem 1rem;border:1px solid var(--line);border-radius:var(--radius);
  text-decoration:none;background:var(--bg);height:100%}
.related a:hover{border-color:var(--brand);background:var(--brand-l)}
.rel-kicker{display:block;font-size:.7rem;text-transform:uppercase;letter-spacing:.08em;color:var(--ink-3);font-weight:700}
.rel-title{display:block;font-weight:670;color:var(--brand);margin:.15rem 0}
.rel-desc{display:block;font-size:.86rem;color:var(--ink-2);line-height:1.45}

/* topics index */
.topics{display:grid;gap:2rem;padding-bottom:2rem}
.topic-block h2{font-size:1.2rem;margin-bottom:.2rem}
.topic-block h2 a{text-decoration:none}
.topic-blurb{color:var(--ink-3);font-size:.92rem;margin-bottom:.7rem}
.topic-list{list-style:none;margin:0;padding:0;display:grid;gap:.45rem}
@media (min-width:48rem){.topic-list{grid-template-columns:1fr 1fr;gap:.45rem 1.6rem}}
.topic-list li{border-bottom:1px solid var(--line);padding-bottom:.45rem}
.topic-list a{font-weight:620;text-decoration:none}
.topic-list a:hover{text-decoration:underline}
.topic-list span{display:block;font-size:.85rem;color:var(--ink-3);line-height:1.45}

/* tools */
.tool{border:1px solid var(--line-2);border-radius:var(--radius);background:var(--bg-2);
  padding:1.1rem;margin:1.8rem 0;box-shadow:var(--shadow)}
.tool h2,.tool h3{margin-top:0}
.tool-head{font-size:.74rem;text-transform:uppercase;letter-spacing:.1em;font-weight:700;
  color:var(--brand);margin:0 0 .3rem}
.tool-grid{display:grid;gap:.85rem;margin-bottom:1rem}
@media (min-width:34rem){.tool-grid.two{grid-template-columns:1fr 1fr}}
.field{display:flex;flex-direction:column;gap:.25rem}
.field label{font-weight:650;font-size:.9rem}
.field .hint{font-size:.8rem;color:var(--ink-3);line-height:1.4}
input[type=number],input[type=text],select{font:inherit;font-size:1rem;padding:.55rem .65rem;
  border:1px solid var(--line-2);border-radius:var(--radius-s);background:var(--bg);color:var(--ink);width:100%}
input[type=range]{width:100%}
.tool-out{background:var(--bg);border:1px solid var(--line);border-radius:var(--radius-s);padding:.9rem 1rem}
.tool-out p{margin:0 0 .5rem}
.tool-out p:last-child{margin:0}
.tool-result{font-size:1.25rem;font-weight:700;color:var(--brand);line-height:1.3}
.tool-note{font-size:.85rem;color:var(--ink-3);line-height:1.5}
.tool table{min-width:0;font-size:.88rem}
.pill{display:inline-block;padding:.12rem .5rem;border-radius:99px;font-size:.76rem;font-weight:700;
  background:var(--bg-3);color:var(--ink-2)}
.pill.good{background:var(--ok-bg);color:var(--ok)}
.pill.bad{background:var(--warn-bg);color:var(--warn)}
.checklist{list-style:none;padding:0;margin:0 0 1rem;display:grid;gap:.3rem}
.checklist li{display:flex;gap:.6rem;align-items:flex-start;padding:.45rem .6rem;border:1px solid var(--line);
  border-radius:var(--radius-s);background:var(--bg);font-size:.95rem;line-height:1.45}
.checklist input{margin-top:.28rem;flex:none;width:1.05rem;height:1.05rem;accent-color:var(--brand)}
.checklist li.done{opacity:.55;text-decoration:line-through}
.progress{height:.5rem;border-radius:99px;background:var(--bg-3);overflow:hidden;margin:.3rem 0 1rem}
.progress>div{height:100%;background:var(--brand);width:0}

/* footer */
.site-foot{border-top:1px solid var(--line);background:var(--bg-2);margin-top:2rem;padding:2.2rem 0 2.5rem;font-size:.92rem}
.foot-cols{display:grid;gap:1.6rem;margin-bottom:1.8rem}
@media (min-width:44rem){.foot-cols{grid-template-columns:repeat(3,1fr)}}
.foot-cols h2{font-size:.76rem;text-transform:uppercase;letter-spacing:.09em;color:var(--ink-3);margin-bottom:.55rem}
.foot-cols ul{list-style:none;margin:0;padding:0;display:grid;gap:.3rem}
.foot-cols a{color:var(--ink-2);text-decoration:none}
.foot-cols a:hover{color:var(--brand);text-decoration:underline}
.foot-note{border-top:1px solid var(--line);padding-top:1.2rem;color:var(--ink-2);max-width:60rem}
.foot-note p{margin:0 0 .6rem}
.fine{font-size:.84rem;color:var(--ink-3)}
@media print{.site-head,.site-foot,.related,.sidebar,.toc{display:none}body{font-size:11pt}}

/* ===================================================================
   Playbright v2: mobile-native navigation, tools, search, glossary
   =================================================================== */

:root{ --tap:44px; --head-h:3.65rem; }
body{ overflow-wrap:break-word }
main{ min-height:60vh }

/* --- reading progress ------------------------------------------- */
.readbar{position:fixed;top:0;left:0;height:3px;width:0;background:var(--brand);z-index:60;
  transition:width .08s linear;pointer-events:none}
@media (prefers-reduced-motion:reduce){.readbar{transition:none}}

/* --- header + mobile drawer ------------------------------------- */
.site-head{padding-top:env(safe-area-inset-top)}
.head-inner{flex-wrap:nowrap}
.nav-toggle{min-height:var(--tap);padding:.5rem .8rem}
.nav-scrim{position:fixed;inset:0;background:rgba(10,20,17,.45);z-index:45;opacity:0;
  transition:opacity .18s ease;backdrop-filter:blur(2px)}
.nav-scrim.show{opacity:1}

@media (max-width:61.99rem){
  .primary-nav{position:fixed;top:0;right:0;bottom:0;width:min(20rem,86vw);z-index:50;
    background:var(--bg);border-left:1px solid var(--line);padding:1rem .9rem 2rem;
    display:block;transform:translateX(102%);visibility:hidden;
    transition:transform .22s ease,visibility 0s linear .22s;
    overflow-y:auto;overscroll-behavior:contain;box-shadow:-8px 0 30px rgba(16,32,29,.16);
    padding-top:calc(1rem + env(safe-area-inset-top))}
  .primary-nav.open{transform:none;visibility:visible;transition:transform .22s ease,visibility 0s}
  .primary-nav::before{content:"Browse Playbright";display:block;font-size:.72rem;font-weight:700;
    letter-spacing:.1em;text-transform:uppercase;color:var(--ink-3);padding:.2rem .55rem .7rem}
  .primary-nav ul{gap:.15rem}
  .primary-nav a{min-height:var(--tap);display:flex;align-items:center;font-size:1.02rem;
    padding:.7rem .7rem;border:1px solid transparent}
  .primary-nav a:active{background:var(--bg-3)}
  .primary-nav a[aria-current]{border-color:var(--brand-l)}
  body.nav-open{overflow:hidden}
}
.nav-search a{gap:.4rem;display:inline-flex;align-items:center}
@media (min-width:62rem){
  .nav-search a{border:1px solid var(--line);margin-left:.35rem}
  .nav-search a:hover{border-color:var(--brand)}
}

/* --- page furniture --------------------------------------------- */
.page-meta{gap:.35rem .8rem}
.page-meta span+span::before{content:"\00b7";margin-right:.8rem;color:var(--line-2)}
.ci-head{font-size:.78rem;text-transform:uppercase;letter-spacing:.09em;color:var(--ink-3);
  margin:1.6rem 0 .6rem}
.side-more{font-size:.85rem;margin:.7rem 0 0;padding-top:.6rem;border-top:1px solid var(--line)}

/* collapsible table of contents */
.toc{padding:0;overflow:hidden}
.toc>summary{list-style:none;cursor:pointer;padding:.8rem 1.1rem;font-size:.76rem;font-weight:700;
  text-transform:uppercase;letter-spacing:.1em;color:var(--ink-3);display:flex;
  align-items:center;justify-content:space-between;min-height:var(--tap)}
.toc>summary::-webkit-details-marker{display:none}
.toc>summary::after{content:"";width:.5rem;height:.5rem;border-right:2px solid currentColor;
  border-bottom:2px solid currentColor;transform:rotate(45deg);margin-top:-.25rem;transition:transform .15s}
.toc[open]>summary::after{transform:rotate(225deg);margin-top:.2rem}
.toc[open]>summary{border-bottom:1px solid var(--line)}
.toc ol{padding:.8rem 1.1rem .9rem 2.1rem}
.toc a{display:inline-block;padding:.15rem 0}

/* table scroll affordance */
.table-scroll{position:relative}
.table-wrap{position:relative}
.table-wrap::after{content:"Scroll for more";position:absolute;top:-.1rem;right:.2rem;font-size:.7rem;
  color:var(--ink-3);text-transform:uppercase;letter-spacing:.06em;opacity:0;transition:opacity .2s}
.table-wrap.is-scrollable::after{opacity:1}
@media (min-width:52rem){.table-wrap::after{display:none}}
.table-scroll:focus-visible{outline:3px solid var(--brand);outline-offset:2px}

/* anchor target highlight */
:target{scroll-margin-top:5rem}
.source-list li:target,.gl-item:target{background:var(--brand-l);border-radius:var(--radius-s);
  outline:2px solid var(--brand);outline-offset:4px}

/* prev / next pager */
.pager{display:grid;gap:.6rem;margin:2.2rem 0 0;padding-top:1.4rem;border-top:1px solid var(--line)}
@media (min-width:40rem){.pager{grid-template-columns:1fr 1fr}}
.pager a{display:block;padding:.85rem 1rem;border:1px solid var(--line);border-radius:var(--radius);
  text-decoration:none;background:var(--bg);min-height:var(--tap)}
.pager a:hover{border-color:var(--brand);background:var(--brand-l)}
.pager .pg-dir{display:block;font-size:.7rem;text-transform:uppercase;letter-spacing:.08em;
  color:var(--ink-3);font-weight:700}
.pager .pg-title{display:block;font-weight:660;color:var(--brand);margin-top:.15rem;font-size:.97rem}
.pager .next{text-align:right}

/* back to top */
.totop{position:fixed;right:max(.9rem,env(safe-area-inset-right));bottom:calc(.9rem + env(safe-area-inset-bottom));
  width:2.9rem;height:2.9rem;border-radius:50%;border:1px solid var(--line-2);background:var(--bg);
  color:var(--ink-2);display:grid;place-items:center;box-shadow:var(--shadow);cursor:pointer;
  opacity:0;visibility:hidden;transform:translateY(6px);transition:opacity .18s,transform .18s,visibility .18s;z-index:35}
.totop.show{opacity:1;visibility:visible;transform:none}
.totop:hover{border-color:var(--brand);color:var(--brand)}

/* home extras */
.home-featured{padding:1.4rem 0 .4rem}
.home-featured>h2{font-size:1.25rem}
.home-featured .card p.rel-kicker{margin:0 0 .2rem}
.hub-card a{gap:.35rem}
.hub-icon{display:block;margin-bottom:.15rem}

/* buttons that look like links */
.linkbtn{background:none;border:0;padding:0;font:inherit;color:var(--brand);cursor:pointer;
  text-decoration:underline;text-underline-offset:.15em}

/* --- tools / calculators ---------------------------------------- */
.tool{padding:1.1rem 1rem}
.tool .field label{display:block}
.tool select,.tool input{min-height:var(--tap)}
.tool-out{margin-top:.2rem}
.tool-result{display:block;margin-bottom:.35rem}
.tool-rows{list-style:none;margin:.6rem 0 0;padding:0;display:grid;gap:.35rem;font-size:.93rem}
.tool-rows li{display:flex;justify-content:space-between;gap:1rem;padding:.35rem 0;
  border-bottom:1px solid var(--line)}
.tool-rows li:last-child{border:0}
.tool-rows b{font-variant-numeric:tabular-nums}
.tool fieldset{border:0;padding:0;margin:0 0 .85rem}
.tool legend{font-weight:650;font-size:.9rem;padding:0;margin-bottom:.35rem}
.radio-row{display:flex;flex-wrap:wrap;gap:.4rem}
.radio-row label{display:inline-flex;align-items:center;gap:.4rem;border:1px solid var(--line-2);
  border-radius:99px;padding:.45rem .8rem;font-size:.92rem;cursor:pointer;min-height:var(--tap);
  background:var(--bg)}
.radio-row input{accent-color:var(--brand)}
.radio-row label:has(input:checked){border-color:var(--brand);background:var(--brand-l);color:var(--brand);font-weight:650}
.checklist li{min-height:var(--tap);align-items:center}
.checklist label{cursor:pointer;flex:1}

/* --- search ------------------------------------------------------ */
.search-form label{display:block;font-weight:650;margin-bottom:.35rem}
.search-row{display:flex;gap:.5rem}
.search-row input{flex:1;min-height:var(--tap);font-size:1.05rem}
.search-row .btn{min-height:var(--tap);white-space:nowrap}
.search-status{font-size:.9rem;color:var(--ink-3);margin:.8rem 0 .3rem;min-height:1.2em}
mark{background:var(--accent);color:#16201d;padding:0 .12em;border-radius:3px}

/* --- glossary ---------------------------------------------------- */
.gl-filter{margin:1.4rem 0 .8rem}
.gl-filter label{display:block;font-weight:650;margin-bottom:.35rem;font-size:.92rem}
.gl-filter input{min-height:var(--tap);max-width:26rem}
.gl-jump{display:flex;flex-wrap:wrap;gap:.3rem;margin:0 0 1.6rem}
.gl-jump a{display:grid;place-items:center;min-width:2rem;min-height:2rem;border:1px solid var(--line);
  border-radius:var(--radius-s);text-decoration:none;font-weight:650;font-size:.88rem;color:var(--ink-2)}
.gl-jump a:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-l)}
.gl-block h2{font-size:1.5rem;color:var(--brand);border-bottom:2px solid var(--line);
  padding-bottom:.2rem;margin-top:2rem;scroll-margin-top:5rem}
.glossary{display:grid;gap:.1rem;margin:0}
.gl-item{padding:.9rem 0;border-bottom:1px solid var(--line)}
.gl-item dt{font-weight:700;font-size:1.02rem;margin-bottom:.2rem}
.gl-alt{display:block;font-weight:400;font-size:.84rem;color:var(--ink-3)}
.gl-item dd{margin:0;color:var(--ink-2)}
.gl-see{margin:.4rem 0 0;font-size:.88rem}
.gl-empty{padding:1rem;background:var(--bg-2);border-radius:var(--radius)}

/* --- policy / contact pages -------------------------------------- */
.doc.narrow{max-width:38rem}
.prose h2+p{margin-top:0}
.contact-list{list-style:none;padding:0;display:grid;gap:.6rem}
.contact-list li{padding:.85rem 1rem;border:1px solid var(--line);border-radius:var(--radius);
  background:var(--bg-2)}

/* --- ad slots: reserved space, no layout shift -------------------- */
.ad-slot{display:block;margin:2rem 0;text-align:center;min-height:0}
.ad-slot:empty{display:none}

/* --- print -------------------------------------------------------- */
@media print{.totop,.readbar,.nav-scrim,.pager,.search-form{display:none}}

/* home FAQ block */
.home-faq{max-width:var(--prose);padding:.5rem 0 2rem}
.home-faq .faqs{margin-top:0}