/* Stage-first navigation (Calvin approved the mock on 20 Oct 2026; _work/navmock/stage-first-menu-mock.html).
   Markup: assets/chrome.js. Behaviour: assets/common.js. Placement: assets/nav-placement.js.

   One header, four layouts by window width. The widths are in em, so a larger browser font picks the
   narrower layout (1024px at a 200% browser font is a 32em window and gets the phone layout):
   - phones, below 48em (768px): logo, Join free and Menu; the bottom tab bar (Home · Stages · Learn · Me)
     opens the same sheet on its Stages or Learn view;
   - 48em to 64em (768 to 1023px): one Stages button (a grid of the five stages and By topic), Learn, More;
   - 64em to 77.5em (1024 to 1239px): the five stages and By topic, then More (Learn, Deals, About us);
   - from 77.5em (1240px): everything in one row.
   common.js also measures the row and, only if it would still not fit (a long signed-in name, a font that
   runs wide), drops the arrows, then ".sg", then the Sign in word (data-nav-tight 1 to 3). If it still
   does not fit, the row wraps: the page never scrolls sideways.
   Text always sits on a solid fill: the band, the card or a stage colour. */

/* ---------- Shared ---------- */
.site-header .header-inner{position:relative;max-width:90rem;padding-inline:var(--space-4);column-gap:var(--space-2)}
.site-header .main-nav{min-width:0}
.site-header .nav-list{margin:0;padding:0;list-style:none}
.site-header .nav-panel ul,.site-header .nav-grid{margin:0;padding:0;list-style:none}
.site-header .nav-item{position:relative;display:flex;align-items:center}
.site-header .nav-item-stage,.site-header .nav-item-topic,.site-header .nav-item-learn,.site-header .nav-item-stages{position:static}
/* Top level: the word is a link without JavaScript; with it, a labelled button (the link is hidden). */
.site-header .main-nav .nav-top,.site-header .main-nav .nav-toggle{display:inline-flex;align-items:center;gap:5px;min-height:44px;min-width:44px;padding:8px;border:0;border-radius:var(--radius-btn);background:transparent;color:var(--stage-band-on);font:800 .875rem/1.2 var(--font-body);white-space:nowrap;text-decoration:none;cursor:pointer}
.site-header .main-nav .nav-item.has-toggle>.nav-top{display:none}
.site-header .main-nav .nav-toggle::after{content:"";width:6px;height:6px;margin:0 2px 3px 2px;border:solid currentColor;border-width:0 2px 2px 0;transform:rotate(45deg);transition:transform .15s}
.site-header .main-nav .nav-toggle[aria-expanded=true]::after{margin:3px 2px 0;transform:rotate(-135deg)}
.site-header .main-nav .nav-top:hover,.site-header .main-nav .nav-toggle:hover .nav-toggle-label,.site-header .main-nav .nav-top[aria-current=page],.site-header .main-nav .nav-item:has(>.nav-top[aria-current=page])>.nav-toggle .nav-toggle-label{text-decoration:underline;text-decoration-thickness:3px;text-underline-offset:6px}
.site-header .main-nav .nav-top[aria-current=page],.site-header .main-nav .nav-item:has(>.nav-top[aria-current=page])>.nav-toggle .nav-toggle-label{text-decoration-color:var(--yellow)}
/* Open: a card-coloured pill, so it reads on every band, joined to the card panel under it. */
.site-header .main-nav .nav-toggle[aria-expanded=true]{background:var(--card);color:var(--ink)}
.site-header .main-nav .nav-toggle[aria-expanded=true] .nav-toggle-label{text-decoration:none}
.nav-toggle-text{display:inline-flex;flex-direction:column;align-items:flex-start}
.nav-toggle-ages{display:none}
/* Stage dot: the stage colour with a ring in the band's text colour, so red By topic shows on the red band. */
.site-header .nav-dot{flex:none;width:10px;height:10px;border-radius:var(--radius-btn);background:var(--stage);box-shadow:0 0 0 2px var(--stage-band-on)}
.site-header .nav-toggle[aria-expanded=true] .nav-dot{box-shadow:0 0 0 2px var(--card),0 0 0 3px var(--ink)}
.nav-s-family{--stage:var(--stage-family);--stage-on:var(--stage-family-on)}
.nav-s-expecting{--stage:var(--stage-expecting);--stage-on:var(--stage-expecting-on)}
.nav-s-baby{--stage:var(--stage-baby);--stage-on:var(--stage-baby-on)}
.nav-s-toddler{--stage:var(--stage-toddler);--stage-on:var(--stage-toddler-on)}
.nav-s-preschool{--stage:var(--stage-preschool);--stage-on:var(--stage-preschool-on)}
.nav-s-primary{--stage:var(--stage-primary);--stage-on:var(--stage-primary-on)}

/* Panels: the card with an ink outline. */
.site-header .nav-panel{z-index:45;color:var(--ink);background:var(--card);border:3px solid var(--outline);border-radius:var(--radius);box-shadow:var(--shadow-md);overscroll-behavior:contain}
.site-header .main-nav .nav-panel a{display:block;min-width:0;min-height:0;padding:6px 8px;margin-inline:-8px;border-radius:var(--radius-field);color:var(--ink);font:700 .9375rem/1.35 var(--font-body);white-space:normal;text-decoration:none;overflow-wrap:break-word}
.site-header .main-nav .nav-panel a:hover{background:var(--soft);text-decoration:underline}
.site-header .main-nav .nav-panel :focus-visible{outline-color:var(--focus)}
.nav-ph{display:flex;flex-wrap:wrap;align-items:center;gap:var(--space-2) var(--space-3)}
.nav-ph-title{margin:0;font:800 1.5rem/1.15 var(--font-head);letter-spacing:-.01em}
.nav-ages{color:var(--muted);font-weight:700}
.nav-pad{display:grid;place-items:center;flex:none;width:44px;height:44px;border-radius:var(--radius-btn);background:var(--stage);color:var(--stage-on);box-shadow:inset 0 -4px 0 rgba(0,0,0,.18)}
.nav-pad-icon{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.site-header .main-nav .nav-panel .nav-start{display:inline-flex;flex-wrap:wrap;align-items:baseline;justify-content:flex-start;gap:4px 8px;text-align:left;margin:0 0 0 auto;max-width:30rem;padding:8px 14px;border-radius:var(--radius-field);background:var(--soft);font-weight:700}
.nav-start b{color:var(--orange-ink);font-weight:800;white-space:nowrap}
.nav-cols{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:var(--space-4) var(--space-6)}
.nav-col,.nav-paid{display:grid;align-content:start;gap:var(--space-2);min-width:0}
.nav-col-title{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin:0;font:800 1.0625rem/1.2 var(--font-head)}
.nav-count{padding:4px 8px;border-radius:var(--radius-btn);background:var(--paper);color:var(--ink);font:800 .75rem/1 var(--font-body);font-variant-numeric:tabular-nums}
.site-header .nav-links{display:grid;gap:2px}
.nav-also{margin:6px 0 0;color:var(--muted);font:800 .75rem/1.2 var(--font-body)}
.site-header .main-nav .nav-panel .nav-col-all{padding-block:4px;color:var(--muted);font:800 .875rem/1.3 var(--font-body)}
.site-header .main-nav .nav-panel .nav-col-all:hover{color:var(--ink)}
.nav-stage-tag,.nav-paid-tag{display:inline-block;margin-left:6px;padding:3px 7px;border-radius:var(--radius-btn);background:var(--stage);color:var(--stage-on);font:800 .6875rem/1 var(--font-body);white-space:nowrap;vertical-align:2px}
.nav-paid-tag{margin:0;background:var(--ink);color:var(--card)}
.nav-tag{display:inline-block;margin-left:6px;padding:1px var(--space-inline);border:2px solid var(--outline);border-radius:var(--radius-btn);background:var(--yellow);color:var(--on-yellow);font:800 .6875rem/1.3 var(--font-body);white-space:nowrap;vertical-align:1px}
.nav-paid{grid-column:1/-1;padding:12px 14px;border-radius:var(--radius-field);background:var(--soft)}
.nav-paid .nav-links{grid-template-columns:repeat(3,minmax(0,1fr));gap:4px var(--space-4)}
.site-header .main-nav .nav-panel .nav-paid a{margin-inline:-6px;padding:6px}
.site-header .main-nav .nav-panel .nav-paid a:hover{background:var(--card)}
.nav-price-line{margin:0;font-size:.875rem;font-weight:700;font-variant-numeric:tabular-nums}
.nav-price-line s{color:var(--muted);font-weight:600}
.nav-pf{display:flex;flex-wrap:wrap;align-items:center;gap:var(--space-4);padding-top:14px;border-top:1px solid var(--hair)}
.site-header .main-nav .nav-panel .nav-see-all{display:inline-flex;align-items:center;min-height:48px;margin:0;padding:8px 18px;border:3px solid var(--stage);border-radius:var(--radius-btn);background:var(--stage);color:var(--stage-on);font:800 .9375rem/1.2 var(--font-body);box-shadow:inset 0 -4px 0 rgba(0,0,0,.2)}
.site-header .main-nav .nav-panel .nav-see-all:hover{background:var(--stage);filter:brightness(1.06)}
/* By topic: a rail of four topics, one open at a time; the open one's lists fill the right. */
.nav-topics{display:grid;grid-template-columns:13.75rem minmax(0,1fr);grid-template-rows:repeat(4,auto) 1fr;grid-auto-flow:dense;column-gap:var(--space-6);row-gap:4px;align-items:start}
.site-header .nav-topic-btn{grid-column:1;display:flex;align-items:center;justify-content:space-between;gap:8px;width:100%;min-height:44px;padding:10px 12px;border:0;border-radius:var(--radius-field);background:none;color:var(--ink);font:800 .9375rem/1.25 var(--font-body);text-align:left;cursor:pointer}
.site-header .nav-topic-btn::after{content:"";flex:none;width:6px;height:6px;border:solid currentColor;border-width:2px 2px 0 0;transform:rotate(45deg)}
.site-header .nav-topic-btn:hover{background:var(--soft)}
.site-header .nav-topic-btn[aria-expanded=true]{background:var(--ink);color:var(--card)}
.nav-topic-body{grid-column:2;grid-row:1/span 5;min-width:0}
.nav-topic-body .nav-cols{grid-template-columns:repeat(3,minmax(0,1fr))}
/* Learn: every course (tagged with its stage), then events. */
.nav-learn{display:grid;grid-template-columns:minmax(0,2fr) minmax(0,1fr);gap:var(--space-6)}
.nav-course-list{grid-template-columns:repeat(2,minmax(0,1fr));column-gap:var(--space-6)}
/* More: a short list under its button. */
.nav-more-title{margin:6px 0 2px;padding:0 10px;color:var(--muted);font:800 .8125rem/1.3 var(--font-body)}
.site-header .main-nav .nav-item-more .nav-panel a{margin:0;padding:9px 10px}
/* Stages grid (768 to 1023px) and the panels it opens. */
.nav-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:var(--space-3)}
.site-header .nav-grid-btn{display:flex;align-items:center;gap:var(--space-3);width:100%;height:100%;min-height:44px;padding:12px 14px;border:3px solid var(--outline);border-radius:var(--radius-field);background:var(--card);color:var(--ink);font:inherit;text-align:left;cursor:pointer}
.site-header .nav-grid-btn:hover{background:var(--soft)}
.nav-grid-btn b{display:block;font:800 1.0625rem/1.1 var(--font-head)}
.nav-grid-btn small{display:block;margin-top:2px;color:var(--muted);font-size:.8125rem;font-weight:700}
.site-header .nav-back{display:none;justify-self:start;min-height:44px;padding:0;border:0;background:none;color:var(--ink);font:800 .875rem/1.2 var(--font-body);text-decoration:underline;cursor:pointer}
.site-header .nav-back:focus-visible,.site-header .nav-topic-btn:focus-visible,.site-header .nav-grid-btn:focus-visible{outline:3px solid var(--focus);outline-offset:2px}
.nav-sheet-title{display:none}
.site-header .nav-account{display:none}

/* ---------- Phones (below 48em) ---------- */
.site-header .main-nav{display:none}
.site-header .nav-menu-toggle{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-width:44px;min-height:44px;padding:8px 12px;border:2px solid currentColor;border-radius:var(--radius-btn);color:var(--stage-band-on);font:800 .875rem/1 var(--font-body);text-decoration:none}
.site-header .nav-menu-icon{position:relative;width:18px;height:2px;border-radius:2px;background:currentColor;box-shadow:0 -6px 0 currentColor,0 6px 0 currentColor}
.site-header .nav-menu-toggle[aria-expanded=true] .nav-menu-icon{box-shadow:none;transform:rotate(45deg)}
.site-header .nav-menu-toggle[aria-expanded=true] .nav-menu-icon::after{content:"";position:absolute;inset:0;border-radius:2px;background:currentColor;transform:rotate(90deg)}
@media(max-width:47.99em){
  .site-header .header-inner{flex-wrap:wrap}
  .site-header .header-inner>.logo{margin-right:auto}
  .site-header .header-inner>.nav-menu-toggle{order:3}
  /* Without JavaScript the Menu link opens the links in place (:target). */
  .site-header>.header-inner>.main-nav:target{order:4;display:block;flex:1 0 100%;margin:4px 0 12px;padding:8px 14px;border:3px solid var(--outline);border-radius:var(--radius);background:var(--card);color:var(--ink)}
  /* With JavaScript: one sheet between the header and the tab bar, on the view its button asked for. The
     header's frosted-glass filter would make it the sheet's containing block, so it goes while the sheet is up. */
  .site-header:is([data-menu=open],[data-menu=closing]){-webkit-backdrop-filter:none;backdrop-filter:none}
  .site-header[data-menu=open]>.header-inner>.main-nav,.site-header[data-menu=closing]>.header-inner>.main-nav{position:fixed;z-index:66;display:block;inset:var(--nav-sheet-top,64px) 8px calc(74px + env(safe-area-inset-bottom)) 8px;width:auto;margin:0;overflow:auto;overscroll-behavior:contain;padding:12px 16px 16px;border:3px solid var(--outline);border-radius:var(--radius);background:var(--card);color:var(--ink)}
  .site-header .main-nav .nav-list{display:flex;flex-direction:column;align-items:stretch}
  .site-header .main-nav .nav-item{flex-wrap:wrap;border-bottom:1px solid var(--hair)}
  .site-header .main-nav .nav-top,.site-header .main-nav .nav-toggle{flex:1 1 100%;justify-content:flex-start;min-height:52px;padding:6px 4px;border-radius:var(--radius-field);color:var(--ink);font:800 1.125rem/1.2 var(--font-head)}
  .site-header .main-nav .nav-toggle::after,.site-header .main-nav .nav-toggle[aria-expanded=true]::after{margin-left:auto}
  .site-header .main-nav .nav-toggle[aria-expanded=true]{background:none}
  .site-header .nav-dot{width:28px;height:28px;box-shadow:inset 0 -3px 0 rgba(0,0,0,.18)}
  .site-header .nav-toggle[aria-expanded=true] .nav-dot{box-shadow:inset 0 -3px 0 rgba(0,0,0,.18)}
  .site-header .main-nav .nav-toggle .nav-toggle-ages{display:block;margin-left:2px;color:var(--muted);font:700 .8125rem/1.2 var(--font-body)}
  .site-header .nav-panel{position:static;flex:1 1 100%;display:grid;gap:var(--space-3);margin:0 0 14px;padding:0;border:0;border-radius:0;background:none;box-shadow:none}
  .site-header .nav-item-stages,.site-header .nav-back,.site-header .nav-ph>.nav-pad,.site-header .nav-ph>.nav-ages,.site-header .nav-item-stage .nav-ph-title{display:none}
  .site-header .nav-ph-title{font-size:1.125rem}
  .site-header .main-nav .nav-panel .nav-start{margin:0;max-width:none}
  .nav-cols,.nav-topic-body .nav-cols,.nav-learn,.nav-course-list,.nav-paid .nav-links{grid-template-columns:minmax(0,1fr)}
  .site-header .main-nav .nav-panel a{min-height:44px;padding-block:10px}
  .nav-topics{display:block}
  .site-header .nav-topic-btn{min-height:52px;padding:6px 4px;border-bottom:1px solid var(--hair);border-radius:0}
  .site-header .nav-topic-btn::after{border-width:0 2px 2px 0}
  .site-header .nav-topic-btn[aria-expanded=true]{background:none;color:var(--ink)}
  .site-header .nav-topic-btn[aria-expanded=true]::after{transform:rotate(-135deg)}
  .nav-topic-body{padding:8px 0 14px}
  /* A panel shown in place of its button (By topic, Learn and More open inside the sheet). */
  .site-header .main-nav .nav-item.is-static>.nav-toggle,.site-header .main-nav .nav-item.is-static>.nav-top{display:none}
  .site-header .nav-item.is-static{border-bottom:0}
  .site-header .nav-item.is-static>.nav-panel{margin:0}
  .site-header .nav-item-more :is(.nav-more-learn,.nav-more-deals,.nav-more-search){display:none}
  .site-header .main-nav .nav-item-deals .nav-top{min-height:52px}
  .site-header[data-sheet] .nav-item-stages{display:none}
  .site-header[data-sheet=menu] .nav-item-stage,.site-header[data-sheet=menu] .nav-item-learn{display:none}
  .site-header[data-sheet=stages] .main-nav .nav-list>li:not(.nav-item-stage,.nav-item-topic){display:none}
  .site-header[data-sheet=stages] .nav-sheet-title{display:block;margin:0 0 4px;font:800 1.5rem/1.2 var(--font-head)}
  .nav-sheet-title span{display:block;color:var(--muted);font:700 .9375rem/1.4 var(--font-body)}
  .site-header[data-sheet=stages] .nav-item-topic .nav-ph-title{margin-top:14px}
  .site-header[data-sheet=learn] .main-nav .nav-list>li:not(.nav-item-learn){display:none}
  .site-header .main-nav .nav-item-join{padding-top:16px}
  .site-header .main-nav .nav-item-join .member-nav-link{display:flex;min-height:48px;border-radius:var(--radius-field)}
  .site-header .member-menu-toggle,.site-header .member-account-menu{display:none}
  .site-header.is-signed-in .nav-item-join{display:none}
  .site-header.is-signed-in[data-sheet=menu] .nav-account{display:block;padding-top:14px}
  .nav-account .nav-group-title{margin:0 0 6px;padding:0 4px;color:var(--muted);font:800 .75rem/1.4 var(--font-body)}
  .nav-account .nav-account-note{margin:0;padding:0 4px 8px;color:var(--muted);font-size:.8125rem;line-height:1.35}
  .site-header .main-nav .nav-account a,.nav-account button{display:flex;align-items:center;justify-content:flex-start;width:100%;min-height:48px;padding:0 4px;border:0;background:none;color:var(--ink);font:700 1rem/1.2 var(--font-body);text-decoration:none}
  .site-header .main-nav :focus-visible{outline-color:var(--focus)}
  .site-header[data-sheet] .nav-search{display:block;padding:4px 4px 12px;border-bottom:2px dashed var(--hair)}
  .site-header[data-sheet]:not([data-sheet=menu]) .nav-search,.site-header[data-sheet]:not([data-sheet=menu]) .nav-text-size{display:none}
  .site-header .main-nav .nav-text-size{display:block;border-bottom:2px solid var(--hair)}
  .nav-text-size .text-size-control{margin:8px 4px;color:var(--ink);font:700 1rem/1.2 var(--font-body)}
  .nav-text-size #text-size-label-menu{margin-right:auto}
  .nav-search label{display:block;margin:0 0 6px;font:800 1.125rem/1.2 var(--font-head);color:var(--ink)}
  .nav-search input{box-sizing:border-box;width:100%;min-height:48px;padding:8px 14px;border:3px solid var(--outline);border-radius:var(--radius-field);background:var(--card);color:var(--ink);font:600 1rem/1.3 var(--font-body)}
  .nav-search-status{margin:6px 0 0;font-size:.875rem;color:var(--muted)}
  .nav-search-status:empty{display:none}
  .nav-search-results ul{list-style:none;margin:0;padding:0}
  .nav-search-group{margin:var(--space-stack) 0 var(--space-tight);padding:0 var(--space-inline);font:800 .75rem/1.4 var(--font-body);color:var(--muted)}
  .site-header .main-nav .nav-search-results a{display:flex;flex-direction:column;align-items:stretch;justify-content:center;gap:2px;min-height:44px;padding:6px 8px;border-radius:var(--radius-field);font-weight:700;color:var(--ink);white-space:normal;overflow-wrap:anywhere}
  .nav-search-type{font:800 .75rem/1.2 var(--font-body);color:var(--muted)}
  .site-header .main-nav .nav-search-results a:hover{background:var(--soft)}
  html.menu-open body{overflow:hidden}
}
.nav-search,.nav-text-size{display:none}

/* ---------- 48em and up: the nav sits in the header row ---------- */
@media(min-width:48em){
  .site-header .header-inner{flex-wrap:nowrap}
  .site-header .nav-menu-toggle{display:none}
  .site-header .main-nav{display:block;flex:1 1 auto;margin-left:var(--space-2)}
  .site-header .nav-list{display:flex;align-items:center;gap:0}
  .site-header[data-nav-wrap] .header-inner,.site-header[data-nav-wrap] .nav-list{flex-wrap:wrap}
  .site-header .header-inner>.member-login-link{margin-left:auto}
  .site-header .nav-item-join{display:none}
  /* Panels drop from the header row, across the width (capped), and scroll inside themselves. */
  .site-header .nav-panel{position:absolute;top:calc(100% - 4px);inset-inline:max(var(--space-4),calc((100% - 75rem) / 2));display:grid;gap:var(--space-4);max-height:calc(100vh - 96px);overflow:auto;padding:20px 24px 18px}
  .site-header .nav-item-more{position:relative}
  .site-header .nav-item-more .nav-panel{inset-inline:auto 0;top:calc(100% + 8px);width:18rem;gap:0;padding:12px}
  /* 48em to 64em: Stages, Learn, More. */
  .site-header .nav-item-stage>.nav-top,.site-header .nav-item-stage>.nav-toggle,.site-header .nav-item-topic>.nav-top,.site-header .nav-item-topic>.nav-toggle,.site-header .nav-item-deals{display:none}
  .site-header .nav-back{display:inline-flex;align-items:center}
  .nav-cols{grid-template-columns:repeat(2,minmax(0,1fr))}
  .nav-paid .nav-links{grid-template-columns:minmax(0,1fr)}
  .nav-topics{grid-template-columns:11rem minmax(0,1fr)}
  .nav-topic-body .nav-cols{grid-template-columns:minmax(0,1fr)}
  .nav-course-list{grid-template-columns:minmax(0,1fr)}
  .site-header .nav-item-more .nav-more-learn{display:none}
}
/* 64em and up: the five stages and By topic in the row, More for the rest. */
@media(min-width:64em){
  .site-header .nav-item-stage>.nav-top,.site-header .nav-item-stage>.nav-toggle,.site-header .nav-item-topic>.nav-top,.site-header .nav-item-topic>.nav-toggle{display:inline-flex}
  .site-header .main-nav .nav-item.has-toggle>.nav-top,.site-header .nav-item-stages,.site-header .nav-item-learn,.site-header .nav-back{display:none}
  .site-header .header-inner>.logo{font-size:1.25rem}
  .site-header .header-inner .member-login-link{padding-inline:12px}
  .site-header .nav-item-topic{margin-left:4px;padding-left:4px;border-left:1px solid color-mix(in srgb,var(--stage-band-on) 45%,transparent)}
  .site-header .nav-item-more .nav-more-learn{display:block}
  .nav-cols,.nav-topic-body .nav-cols{grid-template-columns:repeat(3,minmax(0,1fr))}
  .nav-paid .nav-links{grid-template-columns:repeat(3,minmax(0,1fr))}
  .nav-topics{grid-template-columns:13.75rem minmax(0,1fr)}
  .nav-course-list{grid-template-columns:repeat(2,minmax(0,1fr))}
}
/* 77.5em (1240px) and up: everything shows; More is not needed. */
@media(min-width:77.5em){
  .site-header .nav-item-learn,.site-header .nav-item-deals{display:flex}
  .site-header .nav-item-learn{margin-left:4px;padding-left:4px;border-left:1px solid color-mix(in srgb,var(--stage-band-on) 45%,transparent)}
  .site-header .nav-item-more{display:none}
  .nav-cols{grid-template-columns:repeat(3,minmax(0,1fr)) minmax(0,.95fr)}
  .nav-cols>.nav-paid{grid-column:auto}
  .nav-cols>.nav-paid .nav-links{grid-template-columns:minmax(0,1fr)}
  .nav-topic-body .nav-cols{grid-template-columns:repeat(3,minmax(0,1fr))}
  .nav-topic-body .nav-paid{grid-column:1/-1}
  .nav-topic-body .nav-paid .nav-links{grid-template-columns:repeat(3,minmax(0,1fr))}
}
/* The fit fallback (common.js): only when the row would not fit as it is. */
.site-header[data-nav-tight] .main-nav .nav-item-stage>.nav-toggle::after,.site-header[data-nav-tight] .main-nav .nav-item-topic>.nav-toggle::after{display:none}
.site-header[data-nav-tight] .main-nav .nav-top,.site-header[data-nav-tight] .main-nav .nav-toggle{padding-inline:6px}
.site-header:is([data-nav-tight="2"],[data-nav-tight="3"]) .header-inner>.logo small{display:none}
.site-header:is([data-nav-tight="2"],[data-nav-tight="3"]) .header-inner>.logo{font-size:1.125rem}
.site-header:is([data-nav-tight="2"],[data-nav-tight="3"]) .header-inner>.logo svg.logo-mark{width:30px;height:30px;margin-right:4px}
.site-header[data-nav-tight="3"] .header-inner>.member-login-link>span{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
@media(prefers-contrast:more){.site-header .nav-panel{border-color:var(--ink)}}
@media(forced-colors:active){.site-header .nav-panel{border:1px solid CanvasText}.site-header .nav-dot,.nav-pad{forced-color-adjust:none}}
@media print{.site-header .nav-panel{display:none}}
/* Tab bar: the tab whose view is open in the sheet lights up instead of the page's own tab. */
.tab-bar a[aria-expanded=true]{color:var(--tabbar-on);font-weight:800}
.tab-bar:has(a[aria-expanded=true]) a[aria-current]:not([aria-expanded=true]){color:var(--tabbar-text);font-weight:700}
@media(max-width:47.99em){.site-header:is([data-sheet=stages],[data-sheet=learn])>.header-inner>.main-nav{transform-origin:50% 100%}}

/* ---------- Stage cards: the homepage and each hub's "All stages" ----------
   Six cards (five stages and By topic): three across on wide screens, two across on tablets and
   phones, so no card sits alone in a row; with large text (or a very small phone) a card needs at
   least 9rem (12rem on wide screens), so the grid drops to two, then one, across and a stage name never breaks. Illustration, stage name, one-line benefit, ↗ in the corner.
   The illustration is the stage's stepping-stone pad on a solid tint of its colour (no text sits on it);
   data-art-slot is where a painted picture can go later. */
.stage-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(max(9rem,calc(50% - 8px)),1fr));gap:var(--space-3);margin:var(--space-2) 0 0;padding:0;list-style:none}
.stage-cards>li{display:flex;min-width:0}
.stage-card{position:relative;flex:1;display:grid;grid-template-rows:auto 1fr;min-width:0;overflow:hidden;border:3px solid var(--outline);border-radius:var(--radius);background:var(--card);color:var(--ink);text-decoration:none;box-shadow:var(--shadow-sm)}
a.stage-card:hover{transform:translateY(-2px)}
a.stage-card:hover .stage-card-text b{text-decoration:underline;text-decoration-thickness:2px;text-underline-offset:3px}
a.stage-card:focus-visible{outline:3px solid var(--focus);outline-offset:3px}
.stage-card.is-here{border-color:var(--stage);box-shadow:0 0 0 3px var(--stage)}
.stage-card-art{display:grid;place-items:center;aspect-ratio:16/7;border-bottom:3px solid var(--outline);background:linear-gradient(to top,color-mix(in srgb,var(--stage) 45%,var(--card)) 0 14%,color-mix(in srgb,var(--stage) 20%,var(--card)) 14%)}
.stage-card-pad{display:grid;place-items:center;width:clamp(48px,28%,76px);aspect-ratio:1;border-radius:var(--radius-btn);background:var(--stage);color:var(--stage-on);box-shadow:inset 0 -5px 0 rgba(0,0,0,.2),0 4px 0 -1px rgba(29,35,40,.18)}
.stage-card-icon{width:46%;height:46%}
.stage-card-text{display:grid;align-content:start;gap:4px;padding:12px 14px 14px}
.stage-card-text b{font:800 1.0625rem/1.15 var(--font-head)}
.stage-card-text span{color:var(--muted);font-size:.875rem;font-weight:700;line-height:1.35}
.stage-card-go,.stage-card-here{position:absolute;top:8px;right:8px}
.stage-card-go{display:grid;place-items:center;width:30px;height:30px;border:2px solid var(--outline);border-radius:var(--radius-btn);background:var(--card);color:var(--ink);font:800 .9375rem/1 var(--font-body)}
.stage-card-here{padding:5px 10px;border-radius:var(--radius-btn);background:var(--stage);color:var(--stage-on);font:800 .75rem/1 var(--font-body)}
@media(min-width:64em){
  .stage-cards{grid-template-columns:repeat(auto-fit,minmax(max(12rem,calc(33.33% - 12px)),1fr));gap:var(--space-4)}
  .stage-card-text{padding:14px 18px 18px}
  .stage-card-text b{font-size:1.25rem}
  .stage-card-text span{font-size:.9375rem}
  .stage-card-go,.stage-card-here{top:10px;right:10px}
}
/* An odd number of live stages (only while a hub has no content): the last card spans the row. */
.stage-cards:is([data-count="1"],[data-count="3"],[data-count="5"])>li:last-child{grid-column:1/-1}
.hub-all-stages{margin:var(--space-section,var(--space-12)) 0 0}
.hub-all-stages>h2{margin:0 0 var(--space-3)}

/* ---------- Stage hubs: "Most asked" and "Short courses" ---------- */
.hub-faq-list,.hub-course-list{display:grid;gap:var(--space-2);margin:0;padding:0;list-style:none}
.hub-course-list{max-width:42rem}
.hub-faq-item{border:3px solid var(--outline);border-radius:var(--radius-field);background:var(--card);color:var(--ink)}
.hub-faq-item summary{min-height:44px;padding:12px 16px;font-weight:800;cursor:pointer;list-style:none}
.hub-faq-item summary::-webkit-details-marker{display:none}
.hub-faq-item summary:focus-visible{outline:3px solid var(--focus);outline-offset:2px}
.hub-faq-answer{display:grid;gap:var(--space-2);padding:0 16px 16px}
.hub-faq-answer p{margin:0;max-width:65ch;font-weight:400}
.hub-faq-answer a{justify-self:start;display:inline-flex;align-items:center;min-height:44px;font-weight:800}
.hub-courses h2{display:flex;flex-wrap:wrap;align-items:center;gap:var(--space-2)}
.hub-paid-tag{padding:4px 9px;border-radius:var(--radius-btn);background:var(--ink);color:var(--card);font:800 .75rem/1 var(--font-body)}
.hub-course-list .hub-course{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:var(--space-3);padding:12px 16px;border:3px solid var(--outline);border-radius:var(--radius-field);background:var(--card);color:var(--ink);text-decoration:none}
.hub-course:hover strong{text-decoration:underline}
.hub-course:focus-visible{outline:3px solid var(--focus);outline-offset:2px}
.hub-course-text{display:grid;gap:2px;min-width:0}
.hub-course-text small{color:var(--muted);font-size:.8125rem;font-weight:700}
.hub-course-price{white-space:nowrap;font-variant-numeric:tabular-nums}
.hub-course-price s{color:var(--muted);font-weight:600}
.hub-course-price strong{font:900 1.125rem var(--font-head)}
.hub-courses-note{margin:var(--space-3) 0 0;color:var(--muted);font-size:.875rem;font-weight:700}
@media(max-width:30em){.hub-course-list .hub-course{grid-template-columns:minmax(0,1fr)}}