/* Shared navigation and reading hub use the existing saved theme variables. */
.header .wrap.nav{position:relative;flex-wrap:nowrap;gap:24px}
.header .wrap.nav>nav.hrm-main-nav{display:flex;align-items:center;justify-content:flex-end;gap:30px;overflow:visible;flex:1;flex-wrap:nowrap;width:auto;order:0;margin:0;padding:0;border:0}
.hrm-main-nav>a,.hrm-menu>summary{font:inherit;color:var(--text);white-space:nowrap;cursor:pointer;list-style:none;display:flex;align-items:center;gap:7px;min-height:44px}
.hrm-menu>summary::-webkit-details-marker{display:none}
.header .hrm-main-nav>a,.header .hrm-menu>summary,.header .hrm-main-nav>a:hover,.header .hrm-main-nav>a[aria-current],.header .hrm-menu>summary:hover{background:none;border:0;border-radius:0;text-decoration:none;box-shadow:none;padding:0}
.header .hrm-main-nav>a:after,.header .hrm-menu>summary:after{display:none}
.hrm-menu>summary span{font-size:.8em;opacity:.65}
.hrm-menu>summary:focus-visible{outline:3px solid var(--focus);outline-offset:4px}
.hrm-menu{position:static}
.header .wrap.nav>nav.hrm-main-nav>a,.header .wrap.nav>nav.hrm-main-nav .hrm-menu>summary{font:calc(14px * var(--scale))/1.4 var(--font-interface)}
.header .wrap.nav>nav.hrm-main-nav .hrm-dropdown a{font:calc(14px * var(--scale))/1.4 var(--font-interface);padding:10px 0}
.header .wrap.nav>nav.hrm-main-nav .hrm-dropdown-top a:first-child{font:22px/1.3 var(--font-heading)}
.hrm-dropdown{position:absolute;right:0;top:calc(100% - 2px);width:min(950px,100%);max-height:calc(100dvh - 115px);overflow-y:auto;overscroll-behavior:contain;scrollbar-width:thin;border:1px solid var(--border);background:var(--page);box-shadow:0 18px 35px #00000012;border-radius:0 0 var(--radius) var(--radius);padding:24px 28px 22px;z-index:25}
.hrm-dropdown-top{display:flex;justify-content:space-between;gap:15px;align-items:center;padding-bottom:18px;margin-bottom:14px;border-bottom:1px solid var(--border)}
.hrm-dropdown-top a:first-child{font-family:var(--font-heading);font-size:24px}
.header .hrm-dropdown a{white-space:normal;text-decoration:none;padding:9px 0;border:0;background:none;line-height:1.4;font-size:14px;display:block;color:var(--text)}
.header .hrm-dropdown a:hover{text-decoration:underline;text-underline-offset:4px;color:var(--link)}
.hrm-dropdown-subjects{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0 25px}
.hrm-quicklinks{display:flex;flex-wrap:wrap;gap:0 20px;border-top:1px solid var(--border);margin-top:17px;padding-top:13px}
.hrm-quicklinks>span{flex:0 0 100%;font-size:11px;text-transform:uppercase;letter-spacing:.09em;color:var(--muted);margin-bottom:5px}
.hrm-guide-subjects{display:flex;flex-wrap:wrap;gap:8px 20px;margin-top:20px;font-size:13px}
.hrm-overview-bar{display:flex;flex-wrap:wrap;align-items:center;gap:16px 32px;border-block:1px solid var(--border);padding:22px 0;margin-bottom:38px;color:var(--muted)}
.hrm-overview-bar b{color:var(--text)}.hrm-overview-bar a{margin-left:auto}
.hrm-subject-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.hrm-subject-card{border:1px solid var(--border);border-radius:var(--radius);padding:28px;display:flex;flex-direction:column;gap:20px;min-width:0;transition:border-color .15s}
.hrm-subject-card:hover{border-color:var(--accent)}
.hrm-subject-card h2{font-size:clamp(24px,2vw,31px);line-height:1.18}.hrm-subject-card h2 a{text-decoration:none;color:var(--text)}
.hrm-subject-card h2 a:hover{color:var(--link)}.hrm-subject-card p{margin:0;font-size:15px}.hrm-subject-card small{margin-top:auto;color:var(--muted);font-size:12px}
.hrm-reading-note{max-width:800px;padding:70px 0 30px}.hrm-reading-note h2{margin-bottom:24px}
.hrm-subject-layout{display:grid;grid-template-columns:260px minmax(0,1fr);gap:48px;align-items:start;margin-top:15px}
.hrm-subject-aside{border-top:2px solid var(--accent);padding-top:22px;font-size:14px}.hrm-subject-aside h2{font-size:21px;margin:28px 0 15px}.hrm-subject-aside ul{padding-left:18px;line-height:1.65}.hrm-subject-aside li{margin-bottom:8px}.hrm-question{font-size:21px;line-height:1.45}
.hrm-guide-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.hrm-subject-layout .section-head h2{font-size:32px}
.hrm-related-terms,.hrm-next{padding-top:50px;margin-top:45px;border-top:1px solid var(--border)}.hrm-related-terms h2,.hrm-next h2{font-size:32px;margin-bottom:22px}
.hrm-context-links{display:flex;gap:16px 30px;flex-wrap:wrap;margin-top:28px;font-size:14px}
.hrm-book{scroll-margin-top:115px}.hrm-book h3{font-size:24px;margin:25px 0 18px}
@media(max-width:1000px){.hrm-subject-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.hrm-subject-layout{grid-template-columns:210px minmax(0,1fr);gap:28px}.hrm-guide-grid{grid-template-columns:1fr}.header .wrap.nav>nav.hrm-main-nav{gap:24px}.hrm-dropdown{width:100%}}
@media(max-width:650px){.header .wrap.nav{flex-wrap:wrap;gap:4px 12px;padding:10px 0;min-height:0}.header .wrap.nav .brand{flex:1}.header .wrap.nav .brand svg{width:30px;height:30px}.header .wrap.nav .brand b{font-size:24px}.header .wrap.nav .brand small{font-size:10px}.header .wrap.nav>nav.hrm-main-nav{order:3;flex-basis:100%;justify-content:space-between;gap:20px;margin-top:6px;font-size:14px}.header .wrap.nav .nav-tools{order:2}.hrm-dropdown{padding:15px 20px;max-height:calc(100dvh - 140px)}.hrm-dropdown-subjects{grid-template-columns:1fr}.header .hrm-dropdown a{min-height:44px;padding:12px 0;font-size:14px}.hrm-dropdown-top{align-items:flex-start;margin-bottom:3px;padding-bottom:5px}.hrm-dropdown-top a:first-child{font-size:20px}.hrm-dropdown-top a:last-child{font-size:12px}.hrm-quicklinks{gap:0 20px}.hrm-subject-grid{grid-template-columns:1fr}.hrm-subject-card{padding:24px}.hrm-subject-layout{display:block}.hrm-subject-aside{margin-bottom:40px}.hrm-subject-aside ul{columns:2;column-gap:25px}.hrm-subject-aside li{break-inside:avoid}.hrm-overview-bar{gap:12px 20px;font-size:13px}.hrm-overview-bar a{margin:0;flex-basis:100%}.hrm-related-terms h2,.hrm-next h2,.hrm-subject-layout .section-head h2{font-size:28px}}
@media print{.hrm-subject-layout{display:block}.hrm-subject-grid{grid-template-columns:1fr 1fr}.hrm-subject-card{break-inside:avoid}.hrm-guide-subjects{display:none}}