/* nav.css — site navigation (6 Nov 2026): header sections with panels, full-screen phone menu, breadcrumbs, hub lists,
   footer site map, folded sections/tables (length budget). Same tokens, same APP look; nothing here restyles an app.css component. */

/* ---------- header ---------- */
.top .wrap{gap:10px}
.top .brand{order:1;flex:none}
.top .nav{order:2}
.top .menu-btn{order:3}
.top .nav-app{order:4;flex:none;white-space:nowrap}
.top .nav-app{display:inline-flex;align-items:center;min-height:38px;padding:0 14px;border-radius:var(--r-banner);background:var(--cta-ink);color:var(--cta-ink-label);font:600 15px/1 var(--font-sans);text-decoration:none}
.top .nav-app:hover{filter:brightness(1.08)}
.nav .p-hub{display:block;min-height:0;padding:16px 18px;font:400 15px/1.45 var(--font-sans);color:var(--on-green-2)}
.nav .p-hub:hover{filter:brightness(1.05)}
.nav .p-all{display:inline-flex}
.nav .sec>summary .s{display:none}
.menu-t{position:absolute;opacity:0;width:1px;height:1px;margin:0;pointer-events:none}
.menu-btn{display:inline-flex;align-items:center;gap:8px;min-height:44px;padding:0 12px;border-radius:var(--r-banner);font:600 15px/1 var(--font-sans);color:var(--ink);cursor:pointer;box-shadow:inset 0 0 0 1px var(--line-input);background:var(--surface);user-select:none}
.menu-t:focus-visible+.menu-btn{outline:2.5px solid var(--accent);outline-offset:3px}
.menu-btn .bars{position:relative;width:18px;height:12px;flex:none}
.menu-btn .bars::before,.menu-btn .bars::after,.menu-btn .bars i{content:"";position:absolute;left:0;right:0;height:2px;border-radius:2px;background:currentColor}
.menu-btn .bars::before{top:0}.menu-btn .bars i{top:5px}.menu-btn .bars::after{bottom:0}
.menu-t:checked+.menu-btn .bars::before{top:5px;transform:rotate(45deg)}
.menu-t:checked+.menu-btn .bars::after{bottom:5px;transform:rotate(-45deg)}
.menu-t:checked+.menu-btn .bars i{opacity:0}
@media (max-width:420px){.menu-btn{padding:0 11px}.menu-btn .txt{display:none}.top .nav-app{padding:0 11px}}

/* sections inside the nav: <details> so every link works without JS */
.nav .sec>summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:8px;color:var(--ink);font:600 15px/1.2 var(--font-sans)}
.nav .sec>summary::-webkit-details-marker{display:none}
.nav .sec>summary::after{content:"";width:8px;height:8px;flex:none;border:solid currentColor;border-width:0 1.6px 1.6px 0;transform:rotate(45deg) translate(-2px,-2px);transition:transform .15s;opacity:.7}
.nav .sec[open]>summary::after{transform:rotate(-135deg) translate(-1px,-1px)}
.panel-in{display:grid;gap:14px}
.p-hub{display:block;text-decoration:none;color:var(--on-green-2);border-radius:var(--r-card);padding:16px 18px}
.p-hub b{display:block;color:var(--on-green);font:700 17px/1.3 var(--font-sans);letter-spacing:-.01em;margin-bottom:4px}
.p-hub span{display:block;font-size:14.5px;line-height:1.45}
.p-hub .go{display:inline-block;margin-top:10px;font:600 14px/1 var(--font-sans);color:var(--on-green-serif)}
.p-list{list-style:none;margin:0;padding:0;display:grid;gap:2px}
.p-list li{position:relative}
.p-list a{display:flex;flex-direction:column;gap:2px;min-height:48px;justify-content:center;padding:6px 10px;border-radius:var(--r-banner);text-decoration:none;color:var(--ink)}
.p-list a b{font:600 15.5px/1.3 var(--font-sans);color:var(--ink)}
.p-list a small{font-size:13.5px;line-height:1.35;color:var(--muted)}
.p-list a:hover,.p-list a:focus-visible{background:var(--raised)}
.p-list a[aria-current]{background:var(--accent-soft)}
.p-list a[aria-current] b{color:var(--accent)}
.p-grp{font:700 var(--t-eyebrow)/1.3 var(--font-sans);letter-spacing:var(--track-eyebrow);text-transform:uppercase;color:var(--muted);margin:10px 10px 4px}
.p-grp:first-child{margin-top:0}
.badge{display:inline-flex;align-items:center;height:20px;padding:0 7px;border-radius:var(--r-pill);font:700 11px/1 var(--font-sans);letter-spacing:.06em;text-transform:uppercase;color:var(--accent);background:var(--accent-soft);vertical-align:middle;margin-left:6px}
.badge.data{color:var(--warning);background:var(--warning-soft)}
.p-all{display:inline-flex;align-items:center;min-height:40px;font:600 14.5px/1 var(--font-sans);color:var(--accent);text-decoration:none;padding:0 10px}
.p-all:hover{text-decoration:underline}
.nav-foot{display:flex;flex-wrap:wrap;gap:8px 18px;padding:14px 0 0}
.nav-foot a{min-height:44px;display:inline-flex;align-items:center;font-weight:600;color:var(--ink);text-decoration:none}

/* phone: the nav is a full-screen sheet under the header; the checkbox opens it (no JS needed) */
@media (max-width:959px){
  .nav{display:none;position:absolute;left:0;right:0;top:100%;height:calc(100vh - 61px);height:calc(100dvh - 61px);z-index:30;overflow:auto;-webkit-overflow-scrolling:touch;background:var(--bg);padding:6px var(--screen-h) 48px;flex-direction:column;align-items:stretch;gap:0}
  .menu-t:checked~.nav{display:flex}
  html:has(.menu-t:checked){overflow:hidden}
  .nav .sec{border-bottom:1px solid var(--line)}
  .nav .sec>summary{min-height:58px;font-size:18px;font-weight:700;padding:4px 0}
  .nav .sec.cur>summary{color:var(--accent)}
  .panel{padding:2px 0 14px}
  .p-hub{margin-bottom:8px}
  .p-list a{min-height:52px;padding:6px 10px 6px 12px}
}

/* desktop: toggles in a row, a full-width panel under the header */
@media (min-width:960px){
  .top .wrap{gap:14px}
  .nav{display:flex;align-items:center;gap:2px;flex:1 1 auto;justify-content:center;min-width:0}
  .nav .sec{position:static}
  .nav .sec>summary{min-height:44px;padding:0 10px;border-radius:var(--r-banner);color:var(--ink-2);font-size:15px;white-space:nowrap}
  .nav .sec>summary:hover{color:var(--ink);background:var(--surface)}
  .nav .sec[open]>summary,.nav .sec.cur>summary{color:var(--ink);background:var(--surface);box-shadow:inset 0 0 0 1px var(--line)}
  .nav .sec.cur>summary{box-shadow:inset 0 -2px 0 var(--accent),inset 0 0 0 1px var(--line)}
  .panel{position:absolute;left:0;right:0;top:100%;z-index:25;background:var(--surface);border-bottom:1px solid var(--line);box-shadow:0 30px 60px -34px rgba(10,22,40,.35);padding:26px 0 28px}
  .panel-in{max-width:1200px;margin:0 auto;padding:0 var(--screen-h);grid-template-columns:300px minmax(0,1fr);gap:0 40px;align-items:start}
  .p-hub{padding:20px 22px;align-self:start}
  .p-list{grid-template-columns:repeat(2,minmax(0,1fr));gap:2px 24px}
  .p-list.one{grid-template-columns:minmax(0,420px)}
  .p-grp{grid-column:1/-1}
  .p-all{grid-column:2;justify-self:start;margin-top:8px}
  .nav-foot{display:none}
  .menu-btn{display:none}
  .nav .sec>summary .s{display:inline}.nav .sec>summary .l{display:none}
}
@media (min-width:1260px){.nav .sec>summary .s{display:none}.nav .sec>summary .l{display:inline}}
@media (min-width:1260px){.nav .sec>summary{padding:0 13px;font-size:15.5px}}
@media (prefers-color-scheme:dark){.panel{box-shadow:0 30px 60px -30px rgba(0,0,0,.7)}}

/* ---------- breadcrumbs ---------- */
.crumbs{font-size:14.5px;color:var(--muted);padding:12px 0 0}
.crumbs ol{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;align-items:center;gap:2px 0}
.crumbs li{display:inline-flex;align-items:center;min-height:32px}
.crumbs li+li::before{content:"";width:5px;height:5px;margin:0 9px;border:solid var(--muted);border-width:0 1.4px 1.4px 0;transform:rotate(-45deg);opacity:.7}
.crumbs a{color:var(--ink-2);text-decoration:none;font-weight:500}
.crumbs a:hover{text-decoration:underline}
.crumbs [aria-current]{color:var(--muted);max-width:60vw;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.hero .crumbs{margin-bottom:2px}
@media (max-width:600px){.crumbs{font-size:13.5px}.crumbs li{min-height:28px}}
.t-home .crumbs{display:none}

/* ---------- hub lists ("In this section") ---------- */
.hubgrid{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.hubgrid li{position:relative;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);padding:14px 16px 13px;display:flex;flex-direction:column;gap:4px;min-height:44px}
.hubgrid li.is-hub{background:var(--accent-soft);border-color:color-mix(in srgb,var(--accent) 30%,transparent)}
.hubgrid li a{color:var(--ink);text-decoration:none;font:600 17px/1.3 var(--font-sans)}
.hubgrid li a::after{content:"";position:absolute;inset:0;border-radius:inherit}
.hubgrid li:hover,.hubgrid li:focus-within{border-color:var(--line-input)}
.hubgrid li:has(a:focus-visible){outline:2.5px solid var(--accent);outline-offset:2px}
.hubgrid li p{margin:0;font-size:15px;line-height:1.45;color:var(--ink-2)}
.hubgrid .badge{position:relative;z-index:1;align-self:flex-start;margin:0}
.hubgrid li .row{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
@media (min-width:760px){.hubgrid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:759px){.hubgrid{gap:0}.hubgrid li{border:0;border-radius:0;background:none;border-bottom:1px solid var(--line);padding:10px 0 11px}.hubgrid li.is-hub{background:none;padding-left:12px;border-left:3px solid var(--accent)}
  .hubgrid li a{font-size:16.5px}.hubgrid li p{font-size:14.5px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.hubgrid .grp{margin:12px 0 -2px}}
@media (min-width:1100px){.hubgrid.cols3{grid-template-columns:repeat(3,minmax(0,1fr))}}
section.hub-list .sec-head{margin-bottom:18px}
.h-tool .hubgrid{margin-top:4px}
.h-tool .hub-lead{margin:0 0 12px;font-size:16px;color:var(--ink-2)}
.hubgrid .grp{grid-column:1/-1;margin:6px 0 -4px;font:700 var(--t-eyebrow)/1.3 var(--font-sans);letter-spacing:var(--track-eyebrow);text-transform:uppercase;color:var(--muted)}

/* /sitemap/ */
.sitemap-grid{display:grid;gap:0 48px}
@media (min-width:900px){.sitemap-grid{grid-template-columns:1fr 1fr}}
.sitemap-sec{margin:0 0 34px;break-inside:avoid}
.sitemap-sec h2{margin:0 0 6px;font-size:24px}
.sitemap-sec>p{margin:0 0 14px;color:var(--ink-2)}
.sitemap-sec ol{list-style:none;margin:0;padding:0;display:grid;gap:2px}
.sitemap-sec li{display:flex;flex-wrap:wrap;align-items:baseline;gap:4px 10px;min-height:44px;padding:8px 0;border-bottom:1px solid var(--line)}
.sitemap-sec li a{font-weight:600;color:var(--ink);text-decoration:none}
.sitemap-sec li a:hover{text-decoration:underline}
.sitemap-sec li span.d{color:var(--ink-2);font-size:15px}
.sitemap-sec li.is-hub a{color:var(--accent)}

/* ---------- footer site map ---------- */
.foot .wrap{grid-template-columns:1fr}
.foot-map{display:grid;grid-template-columns:1fr;gap:0;margin-top:6px}
.foot-map>details{border-bottom:1px solid var(--line)}
.foot-map>details>ul{padding-bottom:10px}
.foot-map details>summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;min-height:44px;font:700 var(--t-eyebrow)/1.3 var(--font-sans);letter-spacing:var(--track-eyebrow);text-transform:uppercase;color:var(--ink)}
.foot-map details>summary::-webkit-details-marker{display:none}
.foot-map details>summary::after{content:"";width:7px;height:7px;border:solid var(--muted);border-width:0 1.5px 1.5px 0;transform:rotate(45deg) translateY(-2px);margin-right:4px}
.foot-map details[open]>summary::after{transform:rotate(-135deg) translateY(2px)}
.foot-map h3{font:700 var(--t-eyebrow)/1.3 var(--font-sans);letter-spacing:var(--track-eyebrow);text-transform:uppercase;color:var(--muted);margin:0 0 6px}
.foot-map h3 a{color:var(--ink);text-decoration:none}
.foot-map h3 a:hover{text-decoration:underline}
.foot-map ul{list-style:none;margin:0;padding:0}
.foot-map li a{display:inline-flex;align-items:center;min-height:40px;color:var(--ink-2);text-decoration:none;font-size:15px;line-height:1.3;padding:2px 0}
.foot-map li a:hover{color:var(--ink);text-decoration:underline}
.foot-map li a[aria-current]{color:var(--accent);font-weight:600}
.foot-brand{display:flex;flex-direction:column;gap:6px}
.foot-brand p{margin:0}
.foot-legal{margin-top:22px;padding-top:16px;border-top:1px solid var(--line);font-size:14px;color:var(--muted);display:flex;flex-wrap:wrap;gap:6px 18px;align-items:center}
.foot-legal a{color:var(--ink-2);text-decoration:none;min-height:36px;display:inline-flex;align-items:center}
@media (min-width:900px){
  .foot .wrap{grid-template-columns:260px minmax(0,1fr);gap:40px}
  .foot-map{grid-template-columns:repeat(2,minmax(0,1fr));gap:22px 20px;margin-top:0}
  .foot-map>details{border:0}.foot-map details>summary{pointer-events:none;min-height:0;margin-bottom:6px;color:var(--muted)}.foot-map details>summary::after{display:none}
  .foot-legal{grid-column:1/-1}
}
@media (min-width:1180px){.foot-map{grid-template-columns:repeat(2,minmax(0,1fr))}}

/* ---------- length budget: folded sections, folded tables ---------- */
section.fold{padding:0}
section.fold+section:not(.fold){padding-top:44px}
section.fold .wrap>details{border-top:1px solid var(--line)}
section.fold+section.fold .wrap>details{border-top:0}
.fold-d>summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:64px;padding:12px 0}
.fold-d>summary::-webkit-details-marker{display:none}
.fold-d>summary h2{margin:0;font-size:clamp(20px,2.4vw,26px);line-height:1.2;max-width:880px}
.fold-d>summary h2::before{display:none}
.fold-d>summary::after{content:"";width:10px;height:10px;flex:none;border:solid var(--muted);border-width:0 2px 2px 0;transform:rotate(45deg) translateY(-3px);transition:transform .2s;margin-right:6px}
.fold-d[open]>summary::after{transform:rotate(-135deg) translateY(2px)}
.fold-d>summary .hint{font:500 14px/1.3 var(--font-sans);color:var(--muted);white-space:nowrap}
.fold-body{padding:2px 0 26px}
.fold-body>*{max-width:var(--col)}
.fold-body>.tbl-wrap,.fold-body>.appcta{max-width:none}
section.fold:last-of-type .wrap>details{border-bottom:1px solid var(--line)}
/* a folded table: 3 rows visible, the rest behind a native checkbox toggle (no JS, content stays in the HTML) */
.tbl-wrap.foldrows tbody.more{display:none}
.tbl-wrap.foldrows:has(+.showall :checked) tbody.more{display:table-row-group}
@media (max-width:719px){.tbl-wrap.foldrows:has(+.showall :checked) table.stack tbody.more{display:block}}
.showall{display:inline-flex;align-items:center;gap:8px;min-height:44px;margin:6px 0 10px;padding:0 4px;cursor:pointer;font:600 15px/1 var(--font-sans);color:var(--accent);user-select:none}
.showall input{position:absolute;opacity:0;width:1px;height:1px}
.showall:has(input:focus-visible){outline:2.5px solid var(--accent);outline-offset:3px;border-radius:6px}
.showall .off,.showall:has(:checked) .on{display:none}
.showall:has(:checked) .off{display:inline}
.showall::before{content:"";width:8px;height:8px;border:solid currentColor;border-width:0 2px 2px 0;transform:rotate(45deg) translateY(-2px)}
.showall:has(:checked)::before{transform:rotate(-135deg) translateY(2px)}
/* template library: 3 cards, then "Show all 42" */
.tl-list.foldcards:not(:has(~.showall :checked))>.tl-card:nth-child(n+4):not([data-keep]){display:none}
/* message previews: one line, tap to expand */
.rows .who p{-webkit-line-clamp:1}
.rows .row.full .who p{-webkit-line-clamp:unset;display:block}
/* compact vertical rhythm (owner 6 Nov: 40–48 phone / 56–72 desktop) */
.prose>h2{margin-bottom:14px}
.prose>h3{margin-top:26px}
.related{padding-top:28px}
.faq{padding-top:30px}
@media (min-width:900px){.related{padding-top:36px}.faq{padding-top:40px}}
/* desktop: heading in a left rail, content to the right (editorial two-column, no stacking) */
@media (min-width:1100px){
  .prose.rail{display:grid;grid-template-columns:260px minmax(0,1fr);column-gap:48px;align-items:start}
  .prose.rail>h2{grid-column:1;position:sticky;top:76px;margin:0;font-size:26px;line-height:1.15}
  .prose.rail>*:not(h2){grid-column:2}
  .prose.rail>.tbl-wrap{max-width:none}
}

/* /compare/ fit note (K3 item 6, 7 Nov): under the answer, before the checklist. Desktop = the full paragraph (the toggle did nothing there, so it is hidden);
   phones = the short complete note (.fit-short), nothing clipped; "Read the full note" swaps in the full paragraph (.fit-full) */
.fit-note{margin:12px 0 0;max-width:720px}
.fit-note p{font-size:15px}
.fit-note .fit-short,.fit-note .showall{display:none}
@media (max-width:979px){
  .fit-note{display:block;padding:8px 14px 8px}
  .fit-note .ico{display:none}
  .fit-note p{font-size:14.5px}
  .fit-note .fit-short{display:block}.fit-note .fit-full{display:none}
  .fit-note:has(#fit-t:checked) .fit-full{display:block}.fit-note:has(#fit-t:checked) .fit-short{display:none}
  .fit-note .showall{display:inline-flex;margin:0;min-height:0;padding:0 2px;font-size:14px;vertical-align:baseline}
  .fit-note .fit-less .off{display:inline}.fit-note .fit-less::before{transform:rotate(-135deg) translateY(2px)}
  .has-tool .h-ans .fit-note{margin-top:8px}
}

.hero.no-fig:not(.has-tool){padding-bottom:28px}
@media (min-width:980px){.hero.no-fig:not(.has-tool){padding-bottom:36px}}