/* Persistent calculator navigation */
:root{--nav-ink:#132d43;--nav-blue:#075b87;--nav-focus:#d66b1e}
.sc-layout{display:grid;grid-template-columns:264px minmax(0,1fr);min-height:100vh;align-items:start}
.sc-side{position:sticky;top:0;max-height:100vh;overflow-y:auto;overscroll-behavior:contain;box-sizing:border-box;padding:18px 14px 30px;background:#132d43;color:white;z-index:20;scrollbar-gutter:stable}
.sc-side a{color:#f4faff}.sc-side h2{font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:#d3e5f0;margin:20px 4px 10px}
.sc-side .sc-logo{display:block;font-size:21px;font-weight:800;text-decoration:none;margin:2px 4px 18px;line-height:1.3}
.sc-side label{display:block;font-size:14px;font-weight:700;margin:10px 4px 8px}
.sc-side input[type=search]{box-sizing:border-box;display:block;width:100%;min-height:48px;font-size:16px;border:2px solid #9cc1d9;border-radius:10px;padding:10px 12px;background:#fff;color:#132d43}
.sc-category{width:100%;display:flex;justify-content:space-between;align-items:center;gap:8px;padding:12px 10px;min-height:48px;background:transparent;color:#fff;border:0;border-radius:9px;text-align:left;font:600 14px/1.4 system-ui,sans-serif;cursor:pointer}
.sc-category span:first-child{white-space:nowrap}.sc-category span:last-child{font-size:12px;background:#31516a;padding:3px 7px;border-radius:6px;min-width:20px;text-align:center}
.sc-category[aria-expanded=true],.sc-category:hover{background:#275471}
.sc-links{display:grid;gap:2px;padding:0 0 8px 10px}
.sc-links[hidden],.sc-search-results[hidden]{display:none!important}
.sc-links a,.sc-search-results a{display:block;min-height:42px;box-sizing:border-box;padding:10px 9px;border-radius:7px;text-decoration:none;font-size:13px;line-height:1.4}
.sc-links a:hover,.sc-search-results a:hover,.sc-links a[aria-current=page],.sc-search-results a[aria-current=page]{background:#286486}
.sc-search-results{max-height:55vh;overflow:auto;border:1px solid #54738c;border-radius:9px;margin-top:8px;padding:4px}
.sc-search-status{color:#d3e5f0;font-size:13px;margin:6px 4px}
.sc-content{min-width:0;width:100%;box-sizing:border-box}.sc-content main{max-width:1050px;margin:22px auto;padding:0 22px;box-sizing:border-box}
.sc-content .primary-tools-nav{padding:10px 22px}.sc-content header{padding:14px 22px}.sc-content .card{min-width:0}
.sc-mobile-bar,.sc-overlay{display:none}
.sc-side :is(a,button,input):focus-visible,.sc-mobile-bar button:focus-visible{outline:3px solid var(--nav-focus);outline-offset:3px}
@media(max-width:800px){
.sc-layout{display:block}.sc-mobile-bar{display:flex;position:sticky;top:0;z-index:30;align-items:center;gap:12px;background:#132d43;color:white;padding:9px 14px;min-height:60px;box-sizing:border-box}
.sc-mobile-bar button{min-height:44px;border:1px solid #92b8d2;background:#234e6b;color:white;border-radius:8px;padding:8px 13px;font-size:16px;font-weight:700}
.sc-mobile-bar a{color:white;font-size:18px;font-weight:800;text-decoration:none}
.sc-side{position:fixed;top:0;bottom:0;left:0;width:min(85vw,330px);max-height:none;transform:translateX(-105%);transition:transform .18s ease;z-index:42;box-shadow:0 10px 30px #0004}
body.sc-menu-open .sc-side{transform:translateX(0)}body.sc-menu-open .sc-overlay{display:block;position:fixed;inset:0;background:#0009;z-index:41}
.sc-content main{margin:12px auto;padding:0 14px}.sc-content .card{padding:16px}.sc-content .tool-frame{width:100%;max-width:100%}
}
@media(prefers-reduced-motion:reduce){.sc-side{transition:none!important}}

/* Progressive enhancement: navigation works without JavaScript */
.sc-native-category{margin:2px 0;color:#fff}
.sc-native-category summary{list-style:none;cursor:pointer;display:grid;grid-template-columns:minmax(0,1fr) auto;gap:12px;align-items:center;padding:12px 9px;min-height:48px;box-sizing:border-box;font:600 14px/1.35 system-ui,sans-serif;border-radius:9px;color:#fff}
.sc-native-category summary::-webkit-details-marker{display:none}
.sc-native-category summary:hover,.sc-native-category[open]>summary{background:#275471}
.sc-native-category summary:focus-visible{outline:3px solid #ffaf66;outline-offset:2px}
.sc-native-category summary>span:first-child{white-space:nowrap}
.sc-native-count{background:#31516a;border-radius:7px;font-size:12px;min-width:23px;padding:4px 6px;text-align:center}
.sc-native-links{display:grid;gap:2px;padding:2px 0 10px 10px}
.sc-native-links a{display:block;padding:10px 9px;min-height:44px;box-sizing:border-box;border-radius:7px;color:#f4faff;text-decoration:none;font-size:13px;line-height:1.4}
.sc-native-links a:hover,.sc-native-links a:focus-visible,.sc-native-links a[aria-current=page]{background:#286486}
.sc-native-links a:focus-visible{outline:3px solid #ffaf66;outline-offset:2px}
@media(min-width:801px){#sc-close{display:none!important}}