/* Additive navigation; existing page styles and CTAs remain intact. */
.brand-header{display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;padding-block:22px;min-height:100px}
.brand-header .wordmark{flex:0 1 215px}.brand-header .brand-menu{display:flex;gap:12px 22px;align-items:center;flex-wrap:wrap;margin-left:auto}
.brand-menu a{font:500 14px/1.5 Arial,sans-serif;color:#203044;text-decoration:none;padding:9px 0;border-bottom:2px solid transparent;white-space:nowrap}
.brand-menu a:hover,.brand-menu a:focus-visible{border-color:#375b99}.brand-menu a:focus-visible{outline:2px solid #375b99;outline-offset:4px}
.bookshelf-intro{max-width:760px;padding:65px 0 32px}.bookshelf-intro h1{font-size:clamp(2.6rem,6vw,4.8rem)}.bookshelf-empty{padding:30px;border:1px solid #cbd4e1;background:#f3f6fb;margin-bottom:60px;max-width:760px}
@media(max-width:700px){.brand-header{gap:14px;padding-block:18px}.brand-header .brand-menu{margin-left:0;width:100%;gap:3px 18px}.brand-menu a{font-size:14px;padding:8px 0}.brand-header .brand-signature{max-width:160px}.bookshelf-intro{padding-top:40px}}