.site-header{position:sticky;top:0;z-index:50;background:rgba(11,27,48,.94);border-bottom:1px solid #21456E;backdrop-filter:blur(10px)}
.site-header>.wrap{max-width:1140px;margin:0 auto;padding:0 28px;width:100%}.site-header nav{height:68px;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:0;max-width:none;margin:0}
.site-header .logo{display:flex;align-items:center;gap:10px;color:#EAF1F4;text-decoration:none;white-space:nowrap;font-family:'Mulish',sans-serif;font-size:16px}.site-header .logo b{font-size:18px;font-weight:600}.site-header .logo>span:last-child{color:#7FC9A0;font:italic 18px 'Spectral',serif}.site-header .mark,.site-header .mark svg{display:block;width:30px;height:32px}
.site-header .navlinks{display:flex;align-items:center;gap:18px;font:14px 'Mulish',sans-serif}.site-header a{text-decoration:none}.site-header .navlinks a{color:#9DB2C4}.site-header .navlinks a:hover,.site-header .navlinks a[aria-current=page]{color:#7FC9A0}
.site-header .nav-cta{display:inline-block;background:#5FB87E;color:#072014!important;padding:11px 16px;border-radius:8px;font-weight:700;white-space:nowrap}.site-header .mob-actions{display:none;align-items:center;gap:10px}.site-header .menu-btn,.mnav .mnav-x{width:44px;height:44px;border:1px solid #21456E;border-radius:10px;background:none;color:#EAF1F4;font-size:20px;cursor:pointer}
.mnav{position:fixed;inset:0;z-index:100;background:rgba(11,27,48,.98);display:flex;flex-direction:column;padding:16px 24px 36px;overflow-y:auto;box-sizing:border-box}.mnav[hidden]{display:none}.mnav-head{display:flex;justify-content:flex-end}.mnav .mnav-links{display:flex;flex-direction:column;align-items:stretch;justify-content:flex-start;height:auto;margin-top:8px;padding:0}.mnav-links a{display:flex;align-items:center;min-height:48px;font:18px 'Mulish',sans-serif;color:#EAF1F4;border-bottom:1px solid #21456E;text-decoration:none}.mnav-links .mnav-cta{margin-top:24px;background:#5FB87E;color:#072014;border-radius:10px;justify-content:center;font-weight:700}
.site-header :focus-visible,.mnav :focus-visible{outline:2px solid #7FC9A0;outline-offset:4px}
@media(max-width:980px){.site-header .navlinks{display:none}.site-header .mob-actions{display:flex}.site-header .menu-btn{display:block}}
@media(max-width:520px){.site-header>.wrap{padding:0 12px}.site-header .logo{gap:4px}.site-header .logo b{font-size:15px}.site-header .logo>span:last-child{display:none}.site-header .mob-actions{flex-shrink:0}.site-header .mob-actions .nav-cta{font-size:12px;padding:9px 10px}}
/* Preserve wide article tables through local scrolling on narrow screens. */
@media(max-width:520px){article .illus{overflow-x:auto}}
@media(max-width:1080px){.site-header .navlinks{display:none}.site-header .mob-actions{display:flex}.site-header .menu-btn{display:block}}

@media(max-width:1180px){.site-header .navlinks{display:none}.site-header .mob-actions{display:flex}}
@media(max-width:1180px){.site-header .menu-btn{display:block}}