/* Unified offline navigation, theme and code controls */
:root{color-scheme:light;--gn-bg:rgba(247,250,253,.96);--gn-card:#fff;--gn-text:#17304c;--gn-accent:#2467a8;--gn-line:#d6e1ec;--gn-hover:#eaf3ff;--gn-shadow:0 9px 24px rgba(15,35,60,.10);--gn-code:#0b1320;--gn-code-text:#e7f1ff}
html[data-theme="dark"]{color-scheme:dark;--gn-bg:rgba(12,21,34,.96);--gn-card:#172438;--gn-text:#eaf3ff;--gn-accent:#93c8ff;--gn-line:#2c4058;--gn-hover:#1c334d;--gn-shadow:0 12px 28px rgba(0,0,0,.28);--gn-code:#07101b;--gn-code-text:#edf6ff}
@media(prefers-color-scheme:dark){html:not([data-theme]){color-scheme:dark;--gn-bg:rgba(12,21,34,.96);--gn-card:#172438;--gn-text:#eaf3ff;--gn-accent:#93c8ff;--gn-line:#2c4058;--gn-hover:#1c334d;--gn-shadow:0 12px 28px rgba(0,0,0,.28);--gn-code:#07101b;--gn-code-text:#edf6ff}}
.global-home-bar{position:sticky!important;top:0!important;inset-inline:0!important;z-index:9999;display:flex;align-items:center;gap:.48rem;flex-wrap:wrap;width:100%;margin:0;padding:.62rem max(.8rem,calc((100vw - 1240px)/2 + 1rem));box-sizing:border-box;background:var(--gn-bg);border-bottom:1px solid var(--gn-line);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);font-family:Inter,system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;box-shadow:0 5px 16px rgba(15,31,51,.05)}
.global-home-bar a,.global-home-bar button{appearance:none;display:inline-flex;align-items:center;justify-content:center;gap:.38rem;min-height:2.3rem;padding:.44rem .72rem;border:1px solid var(--gn-line);border-radius:999px;background:var(--gn-card);color:var(--gn-accent);text-decoration:none;font:800 .86rem/1.1 Inter,system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;box-shadow:var(--gn-shadow);cursor:pointer}
.global-home-bar a:hover,.global-home-bar button:hover{border-color:var(--gn-accent);background:var(--gn-hover);text-decoration:none}.global-home-bar a:focus-visible,.global-home-bar button:focus-visible,.global-back-top:focus-visible,.copy-code-global:focus-visible{outline:3px solid color-mix(in srgb,var(--gn-accent) 38%,transparent);outline-offset:2px}.global-home-bar [aria-current="page"]{border-color:var(--gn-accent);background:var(--gn-hover)}
.global-nav-spacer{flex:1 1 auto}.global-back-top{position:fixed;right:18px;bottom:18px;z-index:9998;width:46px;height:46px;border-radius:50%;border:1px solid var(--gn-line);background:var(--gn-card);color:var(--gn-accent);box-shadow:var(--gn-shadow);font-size:1.25rem;font-weight:900;cursor:pointer;opacity:0;pointer-events:none;transform:translateY(8px);transition:.18s ease}.global-back-top.is-visible{opacity:1;pointer-events:auto;transform:none}
pre{position:relative;background:var(--gn-code)!important;color:var(--gn-code-text)!important;border:1px solid var(--gn-line)!important;border-radius:14px!important;padding:2.7rem 1rem 1rem!important;overflow:auto!important;line-height:1.5!important;tab-size:4}.copy-code-global{position:absolute;top:.55rem;right:.6rem;z-index:2;border:1px solid #41556f;border-radius:9px;background:#172438;color:#ddebff;padding:.35rem .58rem;font:800 .76rem/1 Inter,system-ui,sans-serif;cursor:pointer}.copy-code-global:hover{background:#213754}.global-code-label{position:absolute;top:.66rem;left:.75rem;color:#9fb5cf;font:800 .72rem/1 Inter,system-ui,sans-serif;text-transform:uppercase;letter-spacing:.05em}
@media(max-width:620px){.global-home-bar{padding:.52rem .62rem;gap:.35rem}.global-home-bar a,.global-home-bar button{font-size:.78rem;min-height:2.15rem;padding:.4rem .58rem}.global-nav-label-optional{display:none}.global-back-top{right:12px;bottom:12px}}
@media print{.global-home-bar,.global-back-top,.copy-code-global,.global-code-label{display:none!important}pre{padding:1rem!important}}

/* v10: readable source code without forced horizontal one-line scrolling */
pre, pre code {
    white-space: pre-wrap !important;
    overflow-wrap: anywhere;
    word-break: normal;
}


/* v14: breadcrumb inside the fixed global navigation */
.global-breadcrumb{flex:1 0 100%;min-width:0;overflow-x:auto;overflow-y:hidden;scrollbar-width:thin;border-top:1px solid color-mix(in srgb,var(--gn-line) 72%,transparent);padding-top:.48rem;margin-top:.02rem}
.global-breadcrumb ol{display:flex;align-items:center;gap:.34rem;list-style:none;margin:0;padding:0;min-width:max-content}
.global-breadcrumb li{display:inline-flex;align-items:center;gap:.34rem;white-space:nowrap;color:var(--gn-text);font:750 .78rem/1.2 Inter,system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif}
.global-breadcrumb a{min-height:auto!important;padding:.13rem .28rem!important;border:0!important;border-radius:6px!important;background:transparent!important;box-shadow:none!important;font:inherit!important;color:var(--gn-accent)!important}
.global-breadcrumb a:hover{background:var(--gn-hover)!important;text-decoration:underline}
.global-breadcrumb [aria-current="page"]{display:inline-block;max-width:min(52vw,620px);overflow:hidden;text-overflow:ellipsis;color:var(--gn-text);font-weight:900}
.global-breadcrumb-separator{color:color-mix(in srgb,var(--gn-text) 48%,transparent);font-weight:900}
@media(max-width:620px){.global-breadcrumb{padding-top:.4rem}.global-breadcrumb li{font-size:.72rem}.global-breadcrumb [aria-current="page"]{max-width:56vw}}
@media print{.global-breadcrumb{display:none!important}}

/* v15: one fixed navigation on Course Edition pages */
.topbar > .global-breadcrumb-course{
  display:block;
  width:min(calc(100% - 40px),1200px);
  max-width:1200px;
  margin:0 auto;
  padding:.48rem 0 .62rem;
  border-top:1px solid color-mix(in srgb,var(--gn-line) 72%,transparent);
  flex:none;
}
body[data-navigation="course-topbar"] .breadcrumb.pretty{display:none!important}
@media(max-width:620px){
  .topbar > .global-breadcrumb-course{width:calc(100% - 24px);padding:.4rem 0 .5rem}
}
@media print{
  .topbar > .global-breadcrumb-course{display:none!important}
  body[data-navigation="course-topbar"] .breadcrumb.pretty{display:flex!important}
}

/* v17 source paths and markdown cleanup */
.source-path-link{display:inline-flex;align-items:center;gap:.35rem;color:var(--accent,#2467a8);font-weight:850;text-decoration:none;border-bottom:1px dashed currentColor;padding:.12rem .18rem;border-radius:.35rem}.source-path-link:hover{background:var(--soft,#edf3fa);border-bottom-style:solid}.source-path-link code{font:inherit;color:inherit;background:transparent;padding:0}.md-table-wrap{overflow:auto;margin:1rem 0;border:1px solid var(--line,#d7e1ed);border-radius:14px;background:var(--surface,#fff)}table.md-table{width:100%;border-collapse:collapse;min-width:560px}.md-table th,.md-table td{padding:.72rem .85rem;border-bottom:1px solid var(--line,#d7e1ed);text-align:left;vertical-align:top}.md-table th{background:var(--soft,#edf3fa);font-weight:900}.md-table tr:last-child td{border-bottom:0}.md-image{margin:1.1rem 0;padding:12px;border:1px solid var(--line,#d7e1ed);border-radius:16px;background:var(--surface,#fff)}.md-image img{display:block;max-width:100%;height:auto;margin:auto}.md-image figcaption{margin-top:.55rem;text-align:center;color:var(--muted,#617086);font-size:.85rem}.md-inline-image{max-width:100%;height:auto}.md-list{margin:.7rem 0 1rem;padding-left:1.4rem}