/* Shared wayfinding across the introduction, lab, examples, and reference. */
.guide-header{height:65px;position:sticky;top:0;z-index:40;border-bottom:1px solid var(--duo-line);background:var(--duo-white);color:var(--duo-ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;box-sizing:border-box}.guide-header *{box-sizing:border-box}.guide-header-inner{max-width:1600px;margin:auto;height:100%;padding:0 30px;display:flex;align-items:center;gap:36px}.guide-wordmark{display:flex;align-items:center;gap:10px;text-decoration:none;white-space:nowrap}.guide-wordmark strong{font-size:25px;font-weight:600;letter-spacing:-1.7px}.guide-wordmark>span:last-child{font-size:10px;color:var(--duo-secondary);letter-spacing:.1px;border-left:1px solid var(--duo-line);padding-left:13px;margin-left:4px}.guide-fold-mark{display:flex;gap:3px;align-items:center;width:21px;height:24px}.guide-fold-mark i{display:block;width:9px;height:21px;border:1.3px solid var(--duo-tertiary);border-radius:2px;transform:skewY(10deg)}.guide-fold-mark i+i{background:var(--duo-blue);transform:skewY(-10deg)}.guide-primary-nav{display:flex;align-items:center;gap:26px;margin-left:auto;height:100%}.guide-primary-nav>a{height:100%;display:flex;align-items:center;font-size:11px;text-decoration:none;color:var(--duo-secondary);border-bottom:2px solid transparent;padding-top:2px;white-space:nowrap}.guide-primary-nav>a:hover{color:var(--duo-ink)}.guide-primary-nav>a[aria-current="page"]{border-bottom-color:var(--duo-tertiary);color:var(--duo-ink)}.guide-find{display:flex;gap:14px;align-items:center;border:1px solid var(--duo-line);background:transparent;border-radius:5px;padding:7px 10px;font-size:10px;color:var(--duo-secondary);cursor:pointer;white-space:nowrap}.guide-find kbd{font:9px -apple-system,sans-serif;color:var(--duo-secondary)}.guide-search{padding:0;border:1px solid var(--duo-line);border-radius:10px;background:var(--duo-white);box-shadow:0 24px 80px rgba(29, 29, 31, 0.188);color:var(--duo-ink);width:min(530px,calc(100% - 32px));max-height:80dvh;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}.guide-search::backdrop{background:rgba(29, 29, 31, 0.376);backdrop-filter:blur(4px)}.guide-search-top{display:flex;align-items:center;border-bottom:1px solid var(--duo-line);padding:15px 18px;gap:12px}.guide-search-top label{font-size:12px;flex-shrink:0}.guide-search-top input{min-width:0;width:100%;background:none;border:0;color:var(--duo-ink);font:14px -apple-system,sans-serif;padding:7px 0}.guide-search-top button{background:none;border:0;color:var(--duo-secondary);cursor:pointer;min-width:32px;min-height:32px;font-size:20px}.guide-search-results{padding:8px;overflow-y:auto;max-height:50dvh}.guide-search-results a{display:flex;text-decoration:none;align-items:center;gap:20px;padding:13px 12px;color:var(--duo-secondary);border-radius:5px}.guide-search-results a:hover{background:var(--duo-surface)}.guide-search-results a>span{flex:1}.guide-search-results strong{display:block;font-size:13px;font-weight:500}.guide-search-results small{display:block;color:var(--duo-secondary);margin-top:4px;font-size:10px}.guide-search-results p{font-size:12px;color:var(--duo-secondary);padding:20px}.guide-search-foot{font-size:9px;color:var(--duo-secondary);border-top:1px solid var(--duo-line);padding:13px 20px;margin:0}.guide-header a:focus-visible,.guide-header button:focus-visible,.guide-search a:focus-visible,.guide-search input:focus-visible,.guide-search button:focus-visible{outline:2px solid #a98240;outline-offset:3px}.intro-page #note-choice{font:10px -apple-system,sans-serif;padding:6px 8px;background:var(--duo-surface);border:1px solid var(--duo-line);border-radius:4px;color:var(--duo-secondary);max-width:180px}.intro-page .draft-count{font-size:9px;color:var(--duo-secondary)}.guide-has-nav .studio{height:calc(100dvh - 65px)}.guide-has-nav .course-rail{top:65px;height:calc(100dvh - 65px)}
@media(max-width:850px){.guide-header-inner{padding:0 20px;gap:24px}.guide-primary-nav{gap:18px}.guide-wordmark>span:last-child{display:none}.guide-find{gap:6px}.guide-find kbd{display:none}}
@media(max-width:700px){.guide-header{height:62px}.guide-header-inner{padding:0 16px;gap:18px}.guide-primary-nav{gap:16px;overflow-x:auto;scrollbar-width:none;min-width:0}.guide-primary-nav>a{font-size:10px}.guide-wordmark strong{font-size:23px}.guide-fold-mark{display:none}.guide-find{font-size:0;gap:0;padding:8px;border-color:transparent;min-width:32px;height:34px}.guide-find::before{content:'⌕';font-size:22px;line-height:1}.guide-has-nav .studio{height:calc(100dvh - 62px)}.guide-has-nav .course-rail{top:62px;height:auto}.guide-search-top{padding:12px}.guide-search-top label{font-size:10px}.guide-search-top input{font-size:16px}}
@media(max-width:400px){.guide-header-inner{gap:12px}.guide-primary-nav{gap:11px}.guide-primary-nav>a{font-size:9px}.guide-wordmark strong{font-size:22px}.guide-find{padding:3px;min-width:25px}}
.guide-primary-nav .nav-mobile{display:none}
@media(max-width:700px){.guide-primary-nav .nav-desktop{display:none}.guide-primary-nav .nav-mobile{display:inline}.guide-primary-nav{overflow:visible;gap:17px}.guide-primary-nav>a{font-size:11px}}
@media(max-width:400px){.guide-primary-nav{gap:12px}.guide-primary-nav>a{font-size:10px}}
.guide-primary-nav>a,.guide-find,.guide-wordmark>span:last-child{color:var(--duo-secondary)}.guide-search-results small,.guide-search-foot{color:var(--duo-secondary)}
.guide-has-nav .article-shell{overflow-wrap:anywhere;min-width:0}
.guide-header{background:var(--duo-white);color:var(--duo-ink)}
.guide-primary-nav>a[aria-current="page"]{color:var(--duo-ink);border-bottom-color:var(--duo-ink)}
.guide-primary-nav>a:hover,.guide-search-results a:hover{color:var(--duo-link)}
.guide-fold-mark i{border-color:var(--duo-ink)}.guide-fold-mark i+i{background:var(--duo-ink)}
.guide-search{background:var(--duo-white)}.guide-search-results a:hover{background:var(--duo-surface)}
.guide-header a:focus-visible,.guide-header button:focus-visible,.guide-search a:focus-visible,.guide-search input:focus-visible,.guide-search button:focus-visible{outline-color:var(--duo-blue)}

/* Keep primary navigation comfortable to read and tap on phones. */
@media (max-width: 700px) {
  .guide-header-inner { gap: 12px; padding-inline: 14px; }
  .guide-primary-nav { gap: 16px; }
  .guide-primary-nav > a { font-size: 12px; min-height: 44px; }
  .guide-find { min-width: 44px; min-height: 44px; }
  .guide-search-results a { min-height: 56px; }
  .guide-search-results strong { font-size: 15px; }
  .guide-search-results small { font-size: 12px; }
}