:root{--indigo:#10103a;--indigo2:#181855;--lime:#c8ff35;--white:#fff;--ink:#16162f;--muted:#646681;--line:#dcdff4;--panel:#f7f8ff;--max:1180px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);background:#fff;line-height:1.65}a{color:inherit}img{max-width:100%;height:auto;display:block}.skip-link,.screen-reader-text{position:absolute;left:-9999px}.skip-link:focus{left:16px;top:16px;z-index:9999;background:var(--lime);padding:10px 14px;color:#080820}.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.96);border-bottom:1px solid var(--line);backdrop-filter:blur(12px)}.header-shell{max-width:var(--max);margin:auto;min-height:72px;padding:10px 20px;display:flex;align-items:center;gap:28px}.brand img{width:260px;height:48px}.primary-nav{margin-left:auto}.btf-menu{display:flex;list-style:none;gap:22px;margin:0;padding:0}.btf-menu 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/* Audit fixes: semantic layout, visible links, constrained content and reliable navigation */
main#main-content{display:block;overflow:hidden}
.primary-nav .sub-menu{display:none}
.btf-menu>li:nth-child(n+7){display:none}
.article-content p,.article-content li{overflow-wrap:anywhere}
.article-content a:not(.btf-context-link){color:#4f6700;text-decoration-color:#8bad00}
.article-content a:visited:not(.btf-context-link){color:#68439a}
.article-content a:focus-visible,.btf-context-link:focus-visible,.site-footer a:focus-visible,.btf-menu a:focus-visible{outline:3px solid var(--lime);outline-offset:3px}
.btf-inline-resources{border-left:5px solid var(--lime);border-radius:8px}
.btf-inline-links span{display:block}
.btf-context-link{display:inline-block;font-weight:750;text-decoration:underline;text-underline-offset:3px}
.not-found{max-width:760px;margin:0 auto;padding:100px 20px;min-height:60vh}
@media(max-width:900px){.primary-nav.open{max-height:calc(100vh - 72px);overflow:auto}.btf-menu a{display:block;padding:10px 0}}