/* Shared public-site navigation. Homepage section tracking remains in index.html. */
.zhs-site-nav{--zn-bg:rgba(5,6,8,.72);--zn-panel:rgba(10,11,14,.98);--zn-text:#fafbfc;--zn-muted:#a6acb7;--zn-line:rgba(255,255,255,.14);--zn-active:var(--zhs-blue-accent,#8da7ff);--zn-hover:rgba(255,255,255,.055);position:sticky;top:0;z-index:50;background:var(--zn-bg);border-bottom:1px solid var(--zn-line);backdrop-filter:saturate(160%) blur(14px);-webkit-backdrop-filter:saturate(160%) blur(14px);font-family:'Inter Tight',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif}
.zhs-site-nav[data-position="fixed"]{position:fixed;left:0;right:0;z-index:1000}
.zhs-site-nav[data-theme="light"]{--zn-bg:rgba(255,255,255,.9);--zn-panel:#fff;--zn-text:#111827;--zn-muted:#5b6474;--zn-line:rgba(11,18,32,.14);--zn-active:color-mix(in srgb,var(--zhs-blue,#3d6cff) 92%,#000);--zn-hover:rgba(61,108,255,.055)}
.zhs-site-nav .zhs-nav-inner{position:relative;display:grid;grid-template-columns:minmax(0,1fr) auto minmax(0,1fr);align-items:center;gap:12px;max-width:1200px;margin:0 auto;padding:11px 28px;box-sizing:border-box}
.zhs-site-nav .brand{display:flex;align-items:center;min-width:0;min-height:44px;text-decoration:none;gap:0}
.zhs-site-nav .brand img{height:25px;width:auto;max-width:100%;display:block;filter:brightness(0) invert(1)}
.zhs-site-nav[data-theme="light"] .brand img{filter:none}
.zhs-site-nav .zhs-nav-action{display:inline-block;align-self:center;justify-self:center;min-height:44px;padding:11px 0;margin:0;color:var(--zn-active);font-size:14px;font-weight:500;line-height:22px;text-decoration:underline;text-underline-offset:4px;white-space:nowrap;text-align:center;box-sizing:border-box;background:none;border:0;border-radius:0}
.zhs-site-nav .zhs-nav-action:hover{color:var(--zn-text)}
.zhs-site-nav .zhs-nav-action .label-short{display:none}
.zhs-site-nav .zhs-nav-status{justify-self:center;color:#2dd4bf;font-size:14px;font-weight:400;white-space:nowrap}
.zhs-site-nav .zhs-nav-toggle{display:flex;justify-self:end;flex-direction:column;align-items:center;justify-content:center;gap:5px;width:44px;height:44px;min-width:44px;padding:0;margin:0;background:none;border:0;cursor:pointer}
.zhs-site-nav .zhs-nav-toggle span{display:block;width:22px;height:2px;background:var(--zn-text);border-radius:2px}
.zhs-site-nav .zhs-nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.zhs-site-nav .zhs-nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.zhs-site-nav .zhs-nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.zhs-site-nav .zhs-nav-links{display:none;position:absolute;top:calc(100% + 10px);right:28px;z-index:1001;flex-direction:column;align-items:stretch;gap:2px;min-width:224px;max-width:calc(100vw - 28px);padding:8px;margin:0;background:var(--zn-panel);border:1px solid var(--zn-line);border-radius:14px;box-shadow:0 18px 42px rgba(0,0,0,.22);max-height:calc(100dvh - 90px);overflow-y:auto;overscroll-behavior:contain;box-sizing:border-box}
.zhs-site-nav .zhs-nav-links.open{display:flex}
.zhs-site-nav .zhs-nav-links a{display:flex;align-items:center;min-height:44px;padding:0 14px;margin:0;border-radius:10px;color:var(--zn-muted);font-size:14px;font-weight:400;line-height:1.5;text-decoration:none;white-space:nowrap;box-sizing:border-box}
.zhs-site-nav .zhs-nav-links a:hover{color:var(--zn-text);background:var(--zn-hover)}
.zhs-site-nav .zhs-nav-links a[aria-current]{color:var(--zn-active);font-weight:400}
.zhs-site-nav .zhs-nav-divider{height:1px;flex-shrink:0;margin:6px 14px;background:var(--zn-line)}
.zhs-site-nav a:focus-visible,.zhs-site-nav button:focus-visible{outline:2px solid var(--zn-active);outline-offset:3px}
@media(max-width:860px){.zhs-site-nav .zhs-nav-inner{grid-template-columns:auto minmax(0,1fr) auto}}
@media(max-width:600px){.zhs-site-nav .zhs-nav-action .label-full{display:none}.zhs-site-nav .zhs-nav-action .label-short{display:inline}}
@media(max-width:500px){.zhs-site-nav .zhs-nav-inner{padding:11px 18px;gap:8px;grid-template-columns:auto minmax(0,1fr) auto}.zhs-site-nav .brand img{height:20px}.zhs-site-nav .zhs-nav-action{font-size:12px;max-width:100%}.zhs-site-nav .zhs-nav-action .label-full{display:none}.zhs-site-nav .zhs-nav-action .label-short{display:inline}.zhs-site-nav .zhs-nav-links{left:14px;right:14px;min-width:0}.zhs-site-nav .zhs-nav-toggle span{width:20px}}
@media(max-width:400px){.zhs-site-nav .brand img{height:17px}.zhs-site-nav .zhs-nav-action{font-size:11.5px}}