:root{--ink:#321d12;--paper:#f7f3eb;--white:#fffdf8;--line:#d5c9b8;--rust:#78512b;--muted:#6c5d50;--sage:#eee6d8;--header-height:94px;--max:1200px;color-scheme:light}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:calc(var(--header-height) + 16px)}body{margin:0;padding-top:var(--header-height);background:var(--paper);color:var(--ink);font:17px/1.65 'Segoe UI',Arial,sans-serif}a{color:inherit;text-underline-offset:5px}a:hover{color:var(--rust)}img{max-width:100%;height:auto}button{font:inherit}[hidden]{display:none!important}:focus-visible{outline:3px solid var(--rust);outline-offset:4px}main:focus{outline:none}::selection{background:#e0cbb0;color:var(--ink)}
.skip-link{position:fixed;left:16px;top:-120px;z-index:150;background:var(--ink);color:var(--paper);padding:12px 20px}.skip-link:focus{top:10px;opacity:1}
.arcanum-header{position:fixed;inset:0 0 auto;z-index:100;background:var(--paper);border-bottom:1px solid var(--line);box-shadow:0 3px 18px #321d1208}
.arcanum-nav{max-width:1320px;margin:auto;padding:10px 32px;display:flex;gap:24px;align-items:center;min-height:94px}
.arcanum-brand{display:flex;flex-shrink:0;padding:2px 8px}.arcanum-brand img{display:block;width:82px;height:64px;object-fit:contain}
.arcanum-primary,.arcanum-menu,.arcanum-menu ul,.arcanum-languages{display:flex;align-items:center;gap:7px}.arcanum-menu{margin-left:auto;gap:16px}.arcanum-menu ul{list-style:none;margin:0;padding:0}
.arcanum-nav a:not(.arcanum-brand),.arcanum-menu-toggle{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:8px 11px;font:600 13px/1.3 'Segoe UI',Arial,sans-serif;text-decoration:none;white-space:nowrap;border-bottom:2px solid transparent}
.arcanum-nav a[aria-current=page]{border-color:var(--rust)}.arcanum-nav a:hover{background:var(--sage);color:var(--ink)}.arcanum-languages{gap:0;border-left:1px solid var(--line);padding-left:8px}.arcanum-nav .arcanum-languages a{font-size:11px;padding:8px}.arcanum-languages a[aria-current=true]{text-decoration:underline}
.arcanum-menu-toggle{display:none;background:transparent;color:var(--ink);border:1px solid var(--line);cursor:pointer;gap:8px}
.arcanum-header:not(.has-menu){position:sticky}body:has(.arcanum-header:not(.has-menu)){padding-top:0}
.arcanum-footer{background:var(--ink);color:var(--paper);padding:48px 32px}.arcanum-footer-inner{max-width:1200px;margin:auto;display:flex;align-items:center;justify-content:space-between;gap:30px}.arcanum-footer img{display:block;width:102px;height:80px}.arcanum-footer p{font-size:13px;letter-spacing:.5px;margin:0}.arcanum-footer-inner>div{display:flex;flex-wrap:wrap;gap:24px}.arcanum-footer a{font-size:13px;padding:12px 0}.arcanum-footer a:hover{color:#e9cda5}
@media(max-width:1390px){.arcanum-nav{padding:10px 24px;gap:14px}.arcanum-menu-toggle:not([hidden]){display:inline-flex;margin-left:auto}.has-menu .arcanum-menu{display:none;position:absolute;top:100%;left:0;right:0;background:var(--paper);border-bottom:1px solid var(--line);padding:16px 24px;box-shadow:0 8px 14px #321d1212}.has-menu .arcanum-menu.is-open{display:flex}.arcanum-nav:not(.has-menu *){flex-wrap:wrap}.arcanum-menu{flex-wrap:wrap}.arcanum-menu ul{flex-wrap:wrap}.arcanum-footer-inner{flex-wrap:wrap}}
@media(max-width:540px){:root{--header-height:112px}.arcanum-nav{display:grid;grid-template-columns:1fr auto;gap:0;padding:6px 16px;min-height:112px}.arcanum-brand{grid-column:1;grid-row:1;justify-self:start;padding:0}.arcanum-brand img{width:64px;height:50px}.arcanum-menu-toggle{grid-column:2;grid-row:1}.arcanum-primary{grid-column:1/-1;grid-row:2;justify-content:space-between;gap:0}.arcanum-nav a:not(.arcanum-brand){padding:8px 9px;font-size:12px}.arcanum-menu{grid-column:1/-1;grid-row:3}.arcanum-menu ul{gap:3px}.arcanum-footer{padding:36px 24px}.arcanum-footer-inner{gap:20px}.arcanum-footer-inner>div{gap:18px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
@media print{body{padding:0}.arcanum-header,.arcanum-footer,.skip-link{display:none}}

.book-language{font-size:11px;color:var(--muted);white-space:nowrap}.arcanum-languages:has(.book-language){flex-direction:column;align-items:flex-start;gap:0}.arcanum-nav .arcanum-languages:has(.book-language) a{min-height:32px}

/* Matrix navigation: same visual tokens and typefaces as the existing site. */
.products-disclosure{position:relative}.products-disclosure summary{cursor:pointer;min-height:44px;padding:13px 11px;font:600 13px/1.3 'Segoe UI',Arial,sans-serif}.products-disclosure summary:hover{background:var(--sage)}.arcanum-menu .products-dropdown{position:absolute;top:100%;left:0;min-width:230px;display:block;background:var(--paper);border:1px solid var(--line);padding:8px;box-shadow:0 8px 18px #321d1212}.arcanum-menu details:not([open])>.products-dropdown{display:none}.products-dropdown li a{width:100%;justify-content:flex-start!important}.book-matrix-nav{display:flex;justify-content:center;flex-wrap:wrap;gap:10px 28px;border-bottom:1px solid var(--line);padding:12px 24px;background:var(--white)}.book-matrix-nav a{font-size:14px;min-height:44px;display:inline-flex;align-items:center}.matrix-breadcrumb{max-width:1264px;margin:auto;padding:24px 32px 0;font:13px/1.7 'Segoe UI',Arial,sans-serif;color:var(--muted)}.matrix-breadcrumb ol{display:flex;flex-wrap:wrap;gap:6px 12px;list-style:none;padding:0;margin:0}.matrix-breadcrumb li:not(:first-child):before{content:'›';margin-right:12px}.matrix-breadcrumb a{display:inline-block;padding:5px 0}.matrix-footer{display:grid;grid-template-columns:1.1fr .9fr 1fr 1.1fr;align-items:start;gap:28px}.arcanum-footer-inner.matrix-footer>div{display:flex;flex-direction:column;align-items:flex-start;gap:0;min-width:0}.matrix-footer h2{font:600 14px/1.5 'Segoe UI',Arial,sans-serif;margin:10px 0 14px}.matrix-footer h2 a{font:inherit}.matrix-footer a{overflow-wrap:anywhere;max-width:100%;padding:8px 0}.matrix-footer p{margin-top:12px;font-size:12px}.footer-brand>a{padding-top:0}.matrix-footer .footer-brand{gap:10px}
@media(max-width:1390px){.arcanum-menu .products-dropdown{position:static;box-shadow:none;margin-top:6px}.arcanum-menu ul{align-items:flex-start}.has-menu .arcanum-menu{max-height:calc(100dvh - var(--header-height));overflow-y:auto}}
@media(max-width:1000px){.matrix-footer{grid-template-columns:1fr 1fr}}
@media(max-width:540px){.matrix-footer{grid-template-columns:1fr}.matrix-breadcrumb{padding:18px 24px 0}.book-matrix-nav{gap:4px 22px}.arcanum-primary{justify-content:flex-start;gap:12px}.has-menu .arcanum-menu.is-open{align-items:flex-start}.arcanum-menu>ul{flex-direction:column;width:100%}.arcanum-menu .products-dropdown{min-width:0}.arcanum-nav .arcanum-languages a{min-height:44px}}