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@media(max-width:980px){.shell{width:min(100% - 44px,1180px)}.topbar{height:64px;display:grid;grid-template-columns:42px minmax(0,1fr) auto;gap:12px}.menu-toggle{display:flex;flex-direction:column;gap:5px;justify-content:center;align-items:center;width:40px;height:40px;border:1px solid var(--line);border-radius:8px;background:white;cursor:pointer}.menu-toggle span{display:block;width:19px;height:2px;background:var(--navy)}.brand{justify-self:center}.brand img{max-height:30px;max-width:min(37vw,190px)}.brand-wordmark{font-size:18px}.brand-description,.desktop-nav{display:none}.entry-button{padding:7px 13px;min-height:39px;font-size:13px}.drawer-overlay{display:block;visibility:hidden;opacity:0;pointer-events:none;position:fixed;inset:0;z-index:40;background:rgba(10,30,47,.55);transition:opacity .2s,visibility .2s}.mobile-drawer{display:block;visibility:hidden;pointer-events:none;position:fixed;top:0;left:0;bottom:0;width:min(86vw,344px);background:white;z-index:41;transform:translateX(-105%);transition:transform .2s,visibility .2s;overflow-y:auto;padding:20px;box-shadow:var(--shadow)}.drawer-open .drawer-overlay{visibility:visible;opacity:1;pointer-events:auto}.drawer-open .mobile-drawer{visibility:visible;transform:translateX(0);pointer-events:auto}.drawer-heading{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line);padding-bottom:12px}.drawer-heading strong{color:var(--heading)}.drawer-close{background:white;border:1px solid var(--line);border-radius:7px;width:40px;height:40px;font-size:28px;line-height:1}.drawer-group-label{font-size:12px;letter-spacing:.06em;font-weight:800;color:#1689AE;margin:22px 0 5px}.mobile-drawer nav a{display:block;padding:10px 8px;text-decoration:none;color:var(--heading);border-bottom:1px solid var(--line)}.topic-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.split-article{grid-template-columns:minmax(0,1fr) 220px;gap:22px}.mobile-bottom-nav{display:grid;grid-template-columns:repeat(4,1fr);position:fixed;bottom:0;left:0;right:0;z-index:25;padding-bottom:env(safe-area-inset-bottom,0px);background:white;border-top:1px solid var(--line);box-shadow:0 -5px 18px rgba(0,0,0,.05)}.mobile-bottom-nav a{text-decoration:none;text-align:center;font-size:13px;min-height:49px;display:flex;align-items:center;justify-content:center}.mobile-bottom-nav a[aria-current="page"]{font-weight:800;color:#117EA6;border-top:2px solid var(--cyan)}body{padding-bottom:calc(49px + env(safe-area-inset-bottom,0px))}.back-to-top{bottom:calc(68px + env(safe-area-inset-bottom,0px))}} 
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@media(max-height:440px) and (max-width:980px){.mobile-bottom-nav{position:static}body{padding-bottom:0}.back-to-top{bottom:18px}}
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