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:focus-visible{outline:3px solid var(--warm);outline-offset:3px}

.txcm-source-note{font-size:.8rem;color:var(--muted)}


/* Shared Texchem shell revision: pinned chrome, measured document space, responsive content. */
:root{--shell-header-height:5rem;--shell-footer-height:6rem;--ink:#102236;--muted:#506274;--blue:#075985;--paper:#f7fafc;--surface:#fff;--line:#d8e2ea;--warm:#f4b867;scroll-padding-top:calc(var(--shell-header-height) + .75rem);scroll-padding-bottom:calc(var(--shell-footer-height) + .75rem)}
:root[data-theme="dark"]{--ink:#e8f0f7;--muted:#b6c5d1;--blue:#9bd9ff;--paper:#101923;--surface:#192733;--line:#344957;--warm:#ffd17f;color-scheme:dark}
:root[data-theme="light"]{color-scheme:light}
html,body{min-width:20rem;background-color:var(--paper);color:var(--ink)}body{padding-top:var(--shell-header-height);padding-bottom:var(--shell-footer-height);overflow-wrap:anywhere}
.txcm-header{position:fixed;top:0;left:0;right:0;max-height:28vh;overflow-y:auto;padding-top:env(safe-area-inset-top);background:color-mix(in srgb,var(--surface) 96%,transparent);border-color:var(--line)}
.txcm-header-inner{max-width:100%;padding:.4rem clamp(.65rem,2vw,1.25rem);gap:.8rem;flex-wrap:wrap}
.txcm-brand{min-width:0}.txcm-brand img{width:clamp(7rem,12vw,9.25rem)}
.txcm-nav{flex:1 1 auto;min-width:0;flex-wrap:wrap;gap:.2rem}.txcm-nav a,.language-link{padding:.42rem .55rem;color:var(--ink);text-align:center;text-wrap:balance}
.txcm-header-actions{display:flex;align-items:center;justify-content:center;gap:.5rem;flex-wrap:wrap}
.txcm-social-links{display:flex;align-items:center;justify-content:center;gap:.35rem}.txcm-social-links a{width:2.3rem;height:2.3rem;display:grid;place-items:center;border:1px solid var(--line);border-radius:50%;color:var(--ink);background:var(--surface)}.txcm-social-links svg{width:1rem;height:1rem;fill:currentColor}
.sr-only,.visually-hidden{position:absolute!important;width:1px!important;height:1px!important;padding:0!important;margin:-1px!important;overflow:hidden!important;clip:rect(0,0,0,0)!important;white-space:nowrap!important;border:0!important}
.theme-toggle{min-height:2.4rem;border:1px solid var(--line);border-radius:.5rem;background:var(--surface);color:var(--ink);padding:.4rem .65rem;font:inherit;cursor:pointer}
.txcm-page-shell{max-width:1180px;margin:0 auto;padding:1.1rem clamp(.75rem,2.5vw,1.4rem) 1.5rem}
.txcm-search-band{width:100%;display:grid;grid-template-columns:minmax(11rem,.6fr) minmax(15rem,1.4fr);align-items:center;gap:.75rem;padding:.8rem 1rem;margin:0 0 1rem;border:1px solid var(--line);border-radius:.8rem;background:var(--surface);box-shadow:0 5px 20px rgba(16,34,54,.06)}
.txcm-search-band label{font-weight:700;text-align:center;text-wrap:balance}.txcm-search-row{display:flex;gap:.55rem;min-width:0}.txcm-search-row input{flex:1;min-width:0;min-height:2.75rem;border:1px solid var(--line);border-radius:.55rem;padding:.55rem .75rem;background:var(--paper);color:var(--ink);font:inherit}
.txcm-hero{text-align:center}.txcm-hero p,.txcm-section>p{margin-inline:auto;max-width:70ch}.txcm-eyebrow{text-wrap:balance}.txcm-actions{justify-content:center;flex-wrap:wrap}.txcm-grid{align-items:stretch}.txcm-card{text-align:center;display:flex;flex-direction:column;align-items:center}.txcm-card p{max-width:60ch}.txcm-card a{margin-top:.35rem}.txcm-category-list{display:flex;justify-content:center;flex-wrap:wrap;gap:.65rem;margin:1rem 0}.txcm-category-list a{display:inline-flex;min-height:2.8rem;align-items:center;justify-content:center;text-align:center;padding:.55rem .9rem;border:1px solid var(--line);border-radius:999px;background:var(--surface);font-weight:700;text-wrap:balance}
.txcm-content-legal-links{display:flex;justify-content:center;gap:1rem;flex-wrap:wrap;margin:2rem auto .5rem;padding-top:1rem;border-top:1px solid var(--line)}
.txcm-footer{position:fixed;left:0;right:0;bottom:0;z-index:9;max-height:32vh;overflow-y:auto;padding-bottom:env(safe-area-inset-bottom);border-top:1px solid var(--line);background:var(--surface);color:var(--muted)}
.txcm-footer-inner{max-width:none;width:100%;margin:0 auto;padding:.45rem clamp(.65rem,2vw,1.25rem);display:grid;grid-template-columns:repeat(4,minmax(0,1fr));align-items:center;gap:.35rem;text-align:center;font-size:.86rem}
.txcm-footer-cell{min-width:0;text-wrap:balance}.txcm-footer-contact a{color:var(--blue);font-weight:700}.txcm-attribution{font-size:.9rem;font-weight:750;color:var(--ink)}
.txcm-footer .txcm-distributor{background:transparent;color:var(--ink);padding:0;white-space:normal}
.txcm-dialog{max-width:calc(100vw - 1.5rem);max-height:80vh;overflow:auto;background:var(--surface);color:var(--ink)}
:target{scroll-margin-block:calc(var(--shell-header-height) + .75rem) calc(var(--shell-footer-height) + .75rem)}
:focus-visible{scroll-margin-block:calc(var(--shell-header-height) + 1rem) calc(var(--shell-footer-height) + 1rem)}
.txcm-contact-form{align-items:stretch;max-width:48rem;margin-inline:auto;text-align:left}.txcm-contact-form h2,.txcm-contact-form>p{text-align:center}.txcm-contact-form label,.txcm-cart-details label{font-weight:700;margin-top:.7rem}.txcm-contact-form input,.txcm-contact-form textarea,.txcm-cart-details input{width:100%;min-width:0;border:1px solid var(--line);border-radius:.5rem;background:var(--paper);color:var(--ink);font:inherit;padding:.6rem .7rem}.txcm-contact-form textarea{resize:vertical}.txcm-contact-form button{align-self:center;margin-top:1rem}.txcm-cart-details{align-items:stretch;max-width:52rem;margin:1rem auto}.txcm-cart-details p{align-self:center}.txcm-file-label{cursor:pointer;display:inline-flex;align-items:center;justify-content:center}
@media(max-width:700px){.txcm-header-inner{display:grid;grid-template-columns:minmax(0,1fr);justify-items:center;gap:.25rem;padding:.3rem .65rem}.txcm-brand{justify-content:center;min-height:2rem}.txcm-brand img{width:7.5rem}.txcm-nav{order:2;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));width:min(100%,30rem);justify-content:stretch;gap:0 .25rem}.txcm-nav a{padding:.25rem .3rem;min-height:2rem;display:flex;align-items:center;justify-content:center;line-height:1.2}.txcm-header-actions{order:3;margin:0 auto;gap:.35rem}.txcm-social-links a{width:2rem;height:2rem}.theme-toggle{min-height:2rem;padding:.2rem .5rem}.txcm-search-band{grid-template-columns:1fr;gap:.4rem}.txcm-search-row{width:100%}.txcm-search-row .txcm-button{white-space:normal}.txcm-footer-inner{grid-template-columns:repeat(2,minmax(0,1fr));grid-template-areas:"contact contact" "attribution attribution" "copyright powered";font-size:.78rem;padding:.35rem .55rem;gap:.15rem}.txcm-footer-contact{grid-area:contact}.txcm-attribution{grid-area:attribution}.txcm-copyright{grid-area:copyright}.txcm-powered{grid-area:powered}.txcm-footer{max-height:35vh}.txcm-page-shell{padding-inline:.75rem}.txcm-grid{grid-template-columns:1fr}}
@media(max-width:380px){.txcm-brand img{width:6.75rem}.txcm-nav a,.language-link{font-size:.82rem;padding:.25rem .2rem}.txcm-social-links{gap:.2rem}.txcm-social-links a{width:1.9rem;height:1.9rem}.txcm-header-actions{gap:.3rem}.txcm-search-row{flex-direction:column}.txcm-search-row .txcm-button{width:100%}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
@media(prefers-color-scheme:dark){:root:not([data-theme="light"]){--ink:#e8f0f7;--muted:#b6c5d1;--blue:#9bd9ff;--paper:#101923;--surface:#192733;--line:#344957;--warm:#ffd17f;color-scheme:dark}}
.txcm-hillyard-notice{display:block;margin:.75rem auto 0;text-align:center;font-size:.75rem;color:var(--muted)}