/* Isolated article header: legacy article styles must not change its geometry. */
.article-site-nav{position:sticky;top:0;z-index:100;background:#fbf7f0;border-bottom:1px solid rgba(44,40,37,.14);font:500 14px/1.5 Inter,system-ui,sans-serif;color:#2c2825}
.article-site-nav *{box-sizing:border-box}
.article-site-nav .article-nav-inner{max-width:1180px;height:74px;margin:auto;padding:0 28px;display:flex;align-items:center;gap:24px;justify-content:space-between}
.article-site-nav .article-brand{display:flex;flex-shrink:0}
.article-site-nav .article-brand img{display:block;width:90px;height:45px;object-fit:contain}
.article-site-nav .article-nav-links{display:flex;align-items:center;gap:28px;margin-left:auto}
.article-site-nav a{text-decoration:none;color:inherit}
.article-site-nav a:hover{text-decoration:underline;text-underline-offset:4px}
.article-site-nav .article-book{display:inline-flex;align-items:center;justify-content:center;white-space:nowrap;background:#1e1b18;color:#fff;padding:13px 20px;border-radius:10px}
.article-site-nav .nav-toggle{display:none;align-items:center;justify-content:center;flex-direction:column;gap:5px;width:44px;height:44px;border:0;background:transparent;cursor:pointer;flex-shrink:0}
.article-site-nav .bar{display:block;width:23px;height:2px;background:#2c2825}
.article-site-nav .mobile-menu{display:none;background:#fbf7f0;padding:8px 24px 24px;max-height:calc(100dvh - 74px);overflow-y:auto;border-top:1px solid rgba(44,40,37,.14)}
.article-site-nav .mobile-menu a{display:block;padding:13px 0;border-bottom:1px solid rgba(44,40,37,.14);font-size:16px}
.article-site-nav a:focus-visible,.article-site-nav button:focus-visible{outline:2px solid #095da8;outline-offset:4px}
@media(max-width:780px){.article-site-nav .article-nav-inner{height:64px;padding:0 20px;gap:14px}.article-site-nav .article-nav-links{display:none}.article-site-nav .article-book{margin-left:auto;padding:11px 15px}.article-site-nav .nav-toggle{display:flex}.article-site-nav[data-menu-open="true"] .mobile-menu:not([hidden]){display:block}.article-site-nav .mobile-menu{max-height:calc(100dvh - 64px)}}