/* Kairospace Classroom v2 — layout C. Spec §8 (docs/superpowers/specs/2026-09-24-classroom-v2-design.md). Dark = deep-lab.css variables; light reading surface = Brand OS values. */

:root{--cr-top:64px;--cr-lib:280px;--cr-rail:220px;--cr-measure:43rem;--cr-gold:#F4B860;
  --cr-text:var(--ink);--cr-strong:var(--ink-bright);--cr-soft:var(--muted);--cr-link:var(--teal-bright);
  --cr-rule:var(--line);--cr-rule-2:var(--line-2);--cr-panel:color-mix(in srgb,var(--teal-bright) 6%,transparent);
  --cr-panel-edge:color-mix(in srgb,var(--teal-bright) 34%,transparent);--cr-code:color-mix(in srgb,var(--navy-3) 80%,transparent)}
.cr-sr{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.cr-page :focus-visible{outline:2px solid var(--teal-bright);outline-offset:2px;border-radius:4px}

/* ---- layout ---- */
.cr-layout{display:grid;grid-template-columns:var(--cr-lib) minmax(0,1fr) var(--cr-rail);max-width:1520px;margin:0 auto;min-height:70vh}
.cr-layout--hub{grid-template-columns:var(--cr-lib) minmax(0,1fr)}
.cr-library{border-right:1px solid var(--line);background:color-mix(in srgb,var(--navy-2) 55%,transparent)}
.cr-library-inner{position:sticky;top:var(--cr-top);max-height:calc(100vh - var(--cr-top));overflow-y:auto;overscroll-behavior:contain;scrollbar-width:thin;padding:1.5rem 1rem 2.5rem}
.cr-article,.cr-hub{min-width:0;padding:2.5rem clamp(1.25rem,4vw,3.5rem) 4rem}
.cr-article>*{max-width:var(--cr-measure);margin-left:auto;margin-right:auto}
.cr-rail{border-left:1px solid var(--line)}
.cr-rail-inner{position:sticky;top:var(--cr-top);max-height:calc(100vh - var(--cr-top));overflow-y:auto;padding:2.75rem 1.25rem 2rem;font-size:.86rem}
.cr-bar,.cr-drawer-head,.cr-toc-inline{display:none}

/* ---- library (layout C) ---- */
.cr-library-home{display:block;font-family:var(--font-mono);font-size:.72rem;letter-spacing:.18em;text-transform:uppercase;color:var(--teal-bright);margin:0 .5rem 1rem}
.cr-tree,.cr-cat-list{list-style:none}
.cr-cat{margin-bottom:.15rem}
.cr-cat-btn{width:100%;display:flex;justify-content:space-between;align-items:center;gap:.5rem;background:none;border:0;color:var(--ink);font:500 .78rem/1.3 var(--font-mono);letter-spacing:.08em;text-transform:uppercase;padding:.6rem .5rem;border-radius:8px;cursor:pointer;text-align:left}
.cr-cat-btn:hover{background:color-mix(in srgb,var(--ink) 6%,transparent)}
.cr-cat-btn::after{content:"";width:.45rem;height:.45rem;border-right:1.5px solid var(--muted);border-bottom:1.5px solid var(--muted);transform:rotate(-45deg);transition:transform .2s;margin-left:.25rem;flex:none}
.cr-cat-btn[aria-expanded="true"]::after{transform:rotate(45deg)}
.cr-count{margin-left:auto;color:var(--muted);font-size:.7rem}
.cr-cat-list{margin:.1rem 0 .6rem}
.cr-cat-list a{display:flex;gap:.55rem;align-items:baseline;padding:.42rem .6rem .42rem .75rem;border-left:2px solid transparent;border-radius:0 8px 8px 0;color:var(--muted);font-size:.9rem;line-height:1.35}
.cr-cat-list a:hover{color:var(--ink-bright);background:color-mix(in srgb,var(--ink) 5%,transparent)}
.cr-cat-list a[aria-current="page"]{color:var(--ink-bright);border-left-color:var(--teal-bright);background:color-mix(in srgb,var(--teal-bright) 9%,transparent)}
.cr-n{font-family:var(--font-mono);font-size:.72rem;color:var(--teal-bright);min-width:1rem}
.cr-cat--frontier{margin-top:1rem;padding-top:.75rem;border-top:1px solid var(--line)}
.cr-cat--frontier .cr-cat-btn{color:var(--cr-gold)}

/* ---- search ---- */
.cr-search{position:relative;margin:0 0 1rem}
.cr-search-input{width:100%;font:400 .9rem var(--font-body);color:var(--ink-bright);background:color-mix(in srgb,var(--navy) 70%,transparent);border:1px solid var(--line-2);border-radius:10px;padding:.6rem 2.2rem .6rem .8rem}
.cr-search-input::placeholder{color:var(--muted)}
.cr-search-input:focus{border-color:var(--teal-bright);outline:none;box-shadow:0 0 0 3px color-mix(in srgb,var(--teal-bright) 25%,transparent)}
.cr-search-input::-webkit-search-cancel-button{display:none}
.cr-kbd{position:absolute;right:.6rem;top:.55rem;font:400 .72rem var(--font-mono);color:var(--muted);border:1px solid var(--line-2);border-radius:5px;padding:0 .35rem}
.cr-results{position:absolute;z-index:20;left:0;right:0;top:calc(100% + .35rem);list-style:none;background:var(--navy-2);border:1px solid var(--line-2);border-radius:12px;padding:.35rem;box-shadow:0 18px 40px rgba(0,0,0,.45);max-height:60vh;overflow-y:auto}
.cr-results li{border-radius:8px}
.cr-results a{display:block;padding:.55rem .65rem;border-radius:8px}
.cr-results li[aria-selected="true"] a,.cr-results a:hover{background:color-mix(in srgb,var(--teal-bright) 12%,transparent)}
.cr-results b{display:block;color:var(--ink-bright);font-weight:500;font-size:.92rem}
.cr-results small{display:block;color:var(--muted);font-size:.78rem;line-height:1.35;margin-top:.1rem}
.cr-results .cr-empty{padding:.6rem;color:var(--muted);font-size:.88rem}
.cr-search--big .cr-search-input{font-size:1.05rem;padding:.95rem 2.6rem .95rem 1.1rem;border-radius:14px}
.cr-search--big .cr-kbd{top:.95rem;right:.9rem}

/* ---- article head ---- */
.cr-head{margin-bottom:1.75rem}
.cr-head-top{display:flex;justify-content:space-between;align-items:center;gap:1rem;flex-wrap:wrap;margin-bottom:1.25rem}
.cr-crumbs ol{list-style:none;display:flex;flex-wrap:wrap;gap:.35rem;font:400 .72rem var(--font-mono);letter-spacing:.1em;text-transform:uppercase;color:var(--cr-soft)}
.cr-crumbs li+li::before{content:"›";margin-right:.35rem}
.cr-article .cr-crumbs a{color:var(--cr-link);text-decoration:none}
.cr-reading{display:inline-flex;border:1px solid var(--cr-rule-2);border-radius:99px;padding:2px}
.cr-reading label{position:relative;cursor:pointer}
.cr-reading input{position:absolute;opacity:0;inset:0;cursor:pointer}
.cr-reading span{display:block;font:500 .74rem var(--font-body);padding:.28rem .8rem;border-radius:99px;color:var(--cr-soft)}
.cr-reading input:checked+span{background:var(--teal-bright);color:var(--navy)}
.cr-reading input:focus-visible+span{outline:2px solid var(--teal-bright);outline-offset:2px}
.cr-article h1{font-size:clamp(2rem,3.4vw,2.9rem);color:var(--cr-strong);margin-bottom:.65rem}
.cr-dek{font-size:1.2rem;line-height:1.5;color:var(--cr-text);font-weight:400;margin-bottom:1rem}
.cr-meta{display:flex;flex-wrap:wrap;align-items:center;gap:.35rem .9rem;font-size:.84rem;color:var(--cr-soft)}
.cr-meta>*+*::before{content:"·";margin-right:.9rem;color:var(--cr-rule-2)}
.cr-evidence{color:var(--cr-link);border-bottom:1px dotted currentColor}

/* ---- components ---- */
.cr-banner{border-left:3px solid var(--cr-gold);background:color-mix(in srgb,var(--cr-gold) 9%,transparent);padding:.9rem 1.1rem;border-radius:0 12px 12px 0;font-size:.93rem;line-height:1.55;color:var(--cr-text);margin-bottom:1.5rem}
.cr-lead{margin-bottom:1.75rem}
.cr-lead img{width:100%;height:auto;border-radius:14px;border:1px solid var(--cr-rule)}
.cr-zoom{display:block;cursor:zoom-in}
.cr-takeaways,.cr-practice,.cr-limits,.cr-scope{border:1px solid var(--cr-panel-edge);background:var(--cr-panel);border-radius:14px;padding:1.2rem 1.4rem;margin-bottom:1.75rem}
.cr-takeaways h2,.cr-box-label{font:400 .72rem var(--font-mono)!important;letter-spacing:.16em;text-transform:uppercase;color:var(--cr-link)!important;margin:0 0 .6rem!important}
.cr-takeaways ul{padding-left:1.1rem}
.cr-takeaways li{margin:.35rem 0;line-height:1.55}
.cr-scope{border-style:dashed}
.cr-practice h2,.cr-limits h2{margin-top:0!important}
.cr-limits{border-color:color-mix(in srgb,var(--cr-gold) 40%,transparent);background:color-mix(in srgb,var(--cr-gold) 5%,transparent)}
.cr-toc-inline{border:1px solid var(--cr-rule-2);border-radius:12px;padding:.75rem 1rem;margin-bottom:1.75rem}
.cr-toc-inline summary{cursor:pointer;font:500 .85rem var(--font-body);color:var(--cr-strong)}
.cr-toc-inline ol{margin:.6rem 0 0 1.1rem;font-size:.9rem;line-height:1.8}
.cr-toc-inline a{color:var(--cr-link)}

/* ---- body type: 400 weight, ~17 px, 1.7 leading, bright ink ---- */
.cr-body,.cr-practice,.cr-limits,.cr-faq,.cr-takeaways,.cr-scope{font-size:1.0625rem;line-height:1.7;font-weight:400;color:var(--cr-text)}
.cr-body>*+*{margin-top:1.1rem}
.cr-body h2,.cr-practice h2,.cr-limits h2,.cr-faq h2,.cr-refs h2,.cr-related h2{font-size:1.55rem;color:var(--cr-strong);margin:2.75rem 0 .9rem;line-height:1.2}
.cr-body h3{font:500 1.12rem/1.35 var(--font-body);color:var(--cr-strong);letter-spacing:0;margin-top:1.8rem}
.cr-article [id]{scroll-margin-top:calc(var(--cr-top) + 1.25rem)}
.cr-body ul,.cr-body ol,.cr-practice ul,.cr-limits ul{padding-left:1.3rem}
.cr-body li+li{margin-top:.45rem}
.cr-body li>ul,.cr-body li>ol{margin-top:.45rem}
.cr-article strong{color:var(--cr-strong);font-weight:600}
.cr-article p a,.cr-article li a,.cr-article td a{color:var(--cr-link);text-decoration:underline;text-decoration-color:color-mix(in srgb,currentColor 40%,transparent);text-underline-offset:3px}
.cr-article a.cite{text-decoration:none;border-bottom:1px solid color-mix(in srgb,currentColor 35%,transparent);white-space:normal}
.cr-article sub,.cr-article sup{font-size:.72em;line-height:0}
.table-wrap{overflow-x:auto;border:1px solid var(--cr-rule-2);border-radius:12px}
.table-wrap table{border-collapse:collapse;width:100%;font-size:.93rem;font-variant-numeric:tabular-nums}
.table-wrap th,.table-wrap td{padding:.6rem .8rem;text-align:left;border-bottom:1px solid var(--cr-rule);vertical-align:top}
.table-wrap th{font:600 .85rem var(--font-body);color:var(--cr-soft);letter-spacing:.01em;background:var(--cr-code)}
.table-wrap tr:last-child td{border-bottom:0}
.cr-faq details{border-top:1px solid var(--cr-rule);padding:.9rem 0}
.cr-faq summary{cursor:pointer;font-weight:500;color:var(--cr-strong)}
.cr-faq details>*+*{margin-top:.6rem}
.cr-refs{margin-top:1rem}
.cr-refs ol{padding-left:1.6rem;font-size:.9rem;line-height:1.55;color:var(--cr-text)}
.cr-refs li{margin:.55rem 0;overflow-wrap:anywhere}
.cr-refs li:target{background:color-mix(in srgb,var(--teal-bright) 10%,transparent);border-radius:6px}
.cr-refs i{color:var(--cr-strong)}
.cr-backref{margin-left:.2rem;text-decoration:none!important}
.cr-ref-flag{color:var(--cr-gold);font-size:.82rem}
.term{font:inherit;color:inherit;background:none;border:0;border-bottom:1px dotted currentColor;cursor:help;padding:0}
.cr-term-pop{display:block;margin:.4rem 0;padding:.6rem .8rem;border-radius:10px;background:var(--cr-code);border:1px solid var(--cr-rule-2);font-size:.9rem;line-height:1.5}

/* ---- next step, related, foot ---- */
.cr-next{display:grid;gap:.8rem;margin-top:3rem}
.cr-next-link,.cr-cta{display:flex;flex-direction:column;gap:.2rem;padding:1.1rem 1.3rem;border-radius:14px;border:1px solid var(--cr-rule-2)}
.cr-next-link:hover{border-color:var(--teal-bright)}
.cr-next-lead,.cr-cta-lead{font:400 .72rem var(--font-mono);letter-spacing:.14em;text-transform:uppercase;color:var(--cr-soft)}
.cr-next-title{font:400 1.25rem/1.3 var(--font-heading);color:var(--cr-strong)}
.cr-cta{background:var(--teal-bright);border-color:var(--teal-bright)}
.cr-cta .cr-cta-lead{color:var(--navy);opacity:.75}
.cr-cta-label{font-weight:600;color:var(--navy)}
.cr-cta--papers{background:none;border-color:var(--cr-gold)}
.cr-cta--papers .cr-cta-lead,.cr-cta--papers .cr-cta-label{color:var(--cr-strong)}
.cr-prev-link{font-size:.9rem;color:var(--cr-soft)}
.cr-related{margin-top:2.5rem}
.cr-related ul{list-style:none;display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:.75rem}
.cr-related a{display:flex;flex-direction:column;gap:.3rem;height:100%;padding:1rem;border:1px solid var(--cr-rule);border-radius:12px;text-decoration:none!important}
.cr-related a:hover{border-color:var(--cr-rule-2)}
.cr-related-kind{font:400 .7rem var(--font-mono);letter-spacing:.12em;text-transform:uppercase;color:var(--cr-soft)}
.cr-related-title{color:var(--cr-strong);line-height:1.4}
.cr-foot{margin-top:3rem;padding-top:1.5rem;border-top:1px solid var(--cr-rule);font-size:.85rem;line-height:1.6;color:var(--cr-soft)}
.cr-foot>*+*{margin-top:.8rem}
.cr-foot a{color:var(--cr-link)}
.cr-change strong{color:var(--cr-text)}
.cr-share{display:flex;flex-wrap:wrap;align-items:center;gap:.5rem 1rem;padding-top:.4rem}
.cr-share-label{font:400 .72rem var(--font-mono);letter-spacing:.14em;text-transform:uppercase}
.cr-copy{font:500 .85rem var(--font-body);color:var(--cr-link);background:none;border:1px solid var(--cr-rule-2);border-radius:99px;padding:.25rem .8rem;cursor:pointer}
.cr-otherlang{margin-left:auto}
.cr-cite summary{cursor:pointer}
.cr-cite code{display:block;margin-top:.5rem;padding:.7rem .9rem;border-radius:10px;background:var(--cr-code);font:400 .8rem/1.5 var(--font-mono);white-space:normal;overflow-wrap:anywhere;color:var(--cr-text)}

/* ---- rail ---- */
.cr-rail-title{font:400 .7rem var(--font-mono);letter-spacing:.16em;text-transform:uppercase;color:var(--teal-bright);margin-bottom:.75rem}
.cr-rail ol{list-style:none;border-left:1px solid var(--line)}
.cr-rail li a{display:block;padding:.3rem 0 .3rem .8rem;margin-left:-1px;border-left:2px solid transparent;color:var(--muted);line-height:1.4}
.cr-rail li a:hover{color:var(--ink-bright)}
.cr-rail li a[aria-current="true"]{color:var(--ink-bright);border-left-color:var(--teal-bright)}
.cr-rail-next{display:block;margin-top:1.5rem;padding:.8rem;border:1px solid var(--line-2);border-radius:10px;color:var(--ink-bright);line-height:1.4}
.cr-rail-next span{display:block;font:400 .66rem var(--font-mono);letter-spacing:.12em;text-transform:uppercase;color:var(--muted);margin-bottom:.2rem}

/* ---- hub ---- */
.cr-hub{max-width:1100px}
.cr-hub-head{margin-bottom:3rem;max-width:760px}
.cr-eyebrow{font:400 .72rem var(--font-mono);letter-spacing:.2em;text-transform:uppercase;color:var(--teal-bright);margin-bottom:1rem}
.cr-hub h1{font-size:clamp(2.2rem,4.5vw,3.4rem);margin-bottom:1rem}
.cr-hub-lede{font-size:1.15rem;line-height:1.6;font-weight:400;color:var(--ink);margin-bottom:1.5rem}
.cr-hub-stats{font:400 .8rem var(--font-mono);color:var(--muted);margin-top:.9rem}
.cr-hub-sec{margin-top:3.5rem}
.cr-hub-sec>h2{font-size:1.8rem;margin-bottom:.6rem}
.cr-sec-lede{color:var(--muted);margin-bottom:1.3rem;font-weight:400}
.cr-cards{list-style:none;display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:1rem}
.cr-card{position:relative;display:flex;flex-direction:column;gap:.45rem;height:100%;padding:1.2rem 1.3rem;border:1px solid var(--line);border-radius:16px;background:var(--panel);transition:border-color .2s,transform .2s}
.cr-card:hover{border-color:var(--teal-bright);transform:translateY(-2px)}
.cr-card-n{font:400 .72rem var(--font-mono);color:var(--teal-bright)}
.cr-card-title{font:400 1.15rem/1.3 var(--font-heading);color:var(--ink-bright)}
.cr-card-q{font-size:.92rem;line-height:1.5;color:var(--ink);font-weight:400}
.cr-card-meta{margin-top:auto;padding-top:.5rem;font:400 .72rem var(--font-mono);color:var(--muted)}
.cr-tracks{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:1rem}
.cr-track{padding:1.4rem;border:1px solid var(--line);border-radius:16px;background:var(--panel)}
.cr-track h3{font-size:1.3rem;margin-bottom:.4rem}
.cr-track-blurb{color:var(--muted);font-size:.93rem;font-weight:400;margin-bottom:.9rem}
.cr-track ol{list-style:none}
.cr-track li a{display:flex;gap:.6rem;align-items:baseline;padding:.45rem 0;border-top:1px solid var(--line);color:var(--ink)}
.cr-track li a:hover .cr-t{color:var(--ink-bright)}
.cr-track .cr-t{flex:1;font-weight:400}
.cr-min{font:400 .72rem var(--font-mono);color:var(--muted)}
.cr-track-foot{margin-top:.8rem;font-size:.82rem;color:var(--muted)}
.cr-track-see-h{margin-top:1rem;font-family:var(--font-mono);font-size:.68rem;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
.cr-track ul.cr-track-see{list-style:none;display:flex;flex-wrap:wrap;gap:.4rem;margin-top:.5rem}
.cr-track-see li a{display:inline-block;padding:.3rem .7rem;border:1px solid var(--line);border-radius:999px;border-top:1px solid var(--line);font-size:.82rem;color:var(--teal-bright)}
.cr-track-see li a:hover{border-color:var(--teal-bright)}
.cr-track-foot a{color:var(--teal-bright)}
.cr-hub-frontiers .cr-card{border-style:dashed}
.cr-hub-about{padding:1.6rem;border:1px solid var(--line-2);border-radius:16px}
.cr-hub-about p{font-weight:400;max-width:70ch}
.cr-hub-about p+p{margin-top:.8rem}
.cr-hub-about a{color:var(--teal-bright)}

/* ---- lightbox ---- */
.cr-lightbox{border:0;padding:0;background:transparent;max-width:96vw;max-height:94vh;margin:auto}
.cr-lightbox::backdrop{background:rgba(0,0,0,.82)}
.cr-lightbox img{max-width:96vw;max-height:88vh;width:auto;height:auto;border-radius:10px}
.cr-lightbox button{display:block;margin:.6rem auto 0;font:500 .9rem var(--font-body);color:var(--navy);background:var(--teal-bright);border:0;border-radius:99px;padding:.4rem 1.1rem;cursor:pointer}

/* ---- light reading surface (article column only; chrome and library stay dark) ---- */
html[data-reading="light"] .cr-article{--cr-text:#12262B;--cr-strong:#12262B;--cr-soft:#22646E;--cr-link:#22646E;--cr-rule:#E0E8EB;--cr-rule-2:#BFD2D9;--cr-panel:#F5F8F9;--cr-panel-edge:#BFD2D9;--cr-code:#F5F8F9;
  background:#FAFAFA;color:#12262B}
html[data-reading="light"] .cr-article h1,html[data-reading="light"] .cr-article h2,html[data-reading="light"] .cr-article h3{color:#12262B}
html[data-reading="light"] .cr-reading input:checked+span{background:#12262B;color:#FAFAFA}
html[data-reading="light"] .cr-cta{background:#12262B;border-color:#12262B}
html[data-reading="light"] .cr-cta .cr-cta-lead,html[data-reading="light"] .cr-cta-label{color:#FAFAFA}
html[data-reading="light"] .cr-cta--papers{background:none;border-color:#22646E}
html[data-reading="light"] .cr-cta--papers .cr-cta-lead,html[data-reading="light"] .cr-cta--papers .cr-cta-label{color:#12262B}

/* ---- responsive ---- */
@media (max-width:1279px){
  .cr-layout{grid-template-columns:var(--cr-lib) minmax(0,1fr)}
  .cr-rail{display:none}
  .cr-toc-inline{display:block}
}
@media (max-width:1023px){
  .cr-layout,.cr-layout--hub{grid-template-columns:minmax(0,1fr)}
  .cr-bar{display:block;position:sticky;top:var(--cr-top);z-index:900;background:color-mix(in srgb,var(--navy) 88%,transparent);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
  .cr-bar-btn{width:100%;display:flex;justify-content:space-between;align-items:center;gap:1rem;background:none;border:0;color:var(--ink-bright);font:500 .9rem var(--font-body);padding:.8rem 1rem;cursor:pointer;text-align:left}
  .cr-bar-label{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
  .cr-library{position:fixed;z-index:1100;inset:0 auto 0 0;width:min(88vw,360px);background:var(--navy-2);border-right:1px solid var(--line-2);transform:translateX(-102%);visibility:hidden;transition:transform .25s ease,visibility 0s linear .25s}
  .cr-library.is-open{transform:none;visibility:visible;transition:transform .25s ease}
  .cr-library-inner{position:static;max-height:100%;height:100%;padding-top:1rem}
  .cr-drawer-head{display:flex;justify-content:space-between;align-items:center;margin:0 .5rem 1rem;font:500 .95rem var(--font-body);color:var(--ink-bright)}
  .cr-drawer-close{background:none;border:1px solid var(--line-2);color:var(--ink-bright);border-radius:8px;width:2.2rem;height:2.2rem;font-size:1.3rem;line-height:1;cursor:pointer}
  .cr-backdrop{position:fixed;inset:0;z-index:1050;background:rgba(0,0,0,.55)}
  .cr-article,.cr-hub{padding:1.75rem 1rem 3rem}
  .cr-kbd{display:none}
  .cr-otherlang{margin-left:0}
}
@media (max-width:560px){
  .cr-dek{font-size:1.08rem}
  .cr-body,.cr-practice,.cr-limits,.cr-faq,.cr-takeaways,.cr-scope{font-size:1.02rem}
  .cr-takeaways,.cr-practice,.cr-limits,.cr-scope{padding:1rem}
}
@media (prefers-reduced-motion:reduce){
  .cr-library,.cr-card,.cr-cat-btn::after{transition:none!important}
  .cr-card:hover{transform:none}
}

/* ---- print: light surface, no chrome ---- */
@media print{
  #header-container,#footer-container,.cr-library,.cr-rail,.cr-bar,.cr-reading,.cr-share,.cr-next,.cr-related,.cr-toc-inline,.skip-link,.cr-cite{display:none!important}
  .cr-layout{display:block}
  html,body,.cr-article{background:#FFFFFF!important;color:#12262B!important}
  .cr-article{--cr-text:#12262B;--cr-strong:#12262B;--cr-soft:#22646E;--cr-link:#22646E;--cr-rule:#E0E8EB;--cr-rule-2:#BFD2D9;--cr-panel:#F5F8F9;--cr-panel-edge:#BFD2D9;padding:0}
  .cr-article h1,.cr-article h2,.cr-article h3{color:#12262B}
  .cr-body a:not(.cite)[href^="http"]::after{content:" (" attr(href) ")";font-size:.8em}
  .table-wrap,figure,.cr-takeaways{break-inside:avoid}
}