.m-header{position:relative;z-index:30;background:var(--paper,#fff);border-bottom:1px solid var(--line,#dce2ef)}
.m-header-inner{display:flex;align-items:center;justify-content:space-between;gap:26px;min-height:108px}
.m-brand-lockup{flex:none;text-decoration:none;display:flex;flex-direction:column;gap:5px;padding:12px 0}
.m-brand-lockup img{width:174px;height:auto;border-radius:12px}
.m-tagline{font-size:12px;word-spacing:3px;text-align:center;font-weight:600}
.m-tagline span:nth-child(1){color:#0756ee}.m-tagline span:nth-child(2){color:#6722a7}.m-tagline span:nth-child(3){color:#087a47}
.m-nav{display:flex;align-items:center;gap:22px}
.m-nav>a,.m-nav summary{font-size:14px;font-weight:700;color:var(--ink,#122047);text-decoration:none;min-height:48px;display:flex;align-items:center;gap:8px;cursor:pointer;white-space:nowrap}
.m-nav summary{list-style:none}.m-nav summary::-webkit-details-marker{display:none}
.m-nav summary::after{content:"⌄";font-size:16px;line-height:1;transition:transform .18s}
.m-nav details[open] summary::after{transform:rotate(180deg)}
.m-nav details{border:0;margin:0;padding:0;position:relative}
.m-nav summary::before{display:none}
.m-nav>a[aria-current],.m-nav details:has(a[aria-current])>summary{color:var(--blue,#0756ee)}
.m-menu-panel{position:absolute;left:-20px;top:calc(100% + 8px);width:300px;background:var(--paper,#fff);padding:12px;border:1px solid var(--line,#dce2ef);border-radius:18px;box-shadow:0 16px 45px #11234820}
.m-nav details:last-child .m-menu-panel{left:auto;right:-20px}
.m-menu-panel a{display:block;border-radius:10px;padding:12px;text-decoration:none;color:var(--ink,#122047);font-size:14px;font-weight:700}
.m-menu-panel a small{display:block;font-size:12px;line-height:1.5;color:var(--muted,#536581);font-weight:400;margin-top:3px}
.m-menu-panel a:hover,.m-menu-panel a:focus-visible{background:var(--cloud,#f3f6fc)}
.m-menu-panel a[aria-current]{box-shadow:inset 3px 0 #0756ee;background:var(--cloud,#f3f6fc)}
.m-header-actions{display:flex;align-items:center;gap:18px}.m-signin{font-size:14px;font-weight:700;color:var(--ink,#122047);white-space:nowrap;text-decoration:none}
.m-header-actions .button{min-height:46px;padding:12px 19px;font-size:14px}
.m-menu-toggle{background:transparent;border:1px solid var(--line,#dce2ef);color:var(--ink,#122047);border-radius:12px;padding:10px 16px;min-height:44px;font:inherit;font-size:14px;font-weight:700}
.m-mobile-actions{display:none}
.m-header :focus-visible{outline:3px solid #507bde;outline-offset:4px}
.site-footer .brand{display:inline-flex;border-radius:16px;overflow:hidden;background:white;padding:8px 12px;max-width:220px}
.site-footer .brand img{display:block;border-radius:10px;width:174px;height:auto}
[data-theme="dark"] .m-brand-lockup img{background:white;padding:4px}
[data-theme="dark"] .m-tagline span:nth-child(1){color:#a8c7ff}
[data-theme="dark"] .m-tagline span:nth-child(2){color:#d4bbff}
[data-theme="dark"] .m-tagline span:nth-child(3){color:#a8d1ba}
@media(max-width:1100px){.m-header-inner{gap:18px}.m-nav{gap:16px}.m-header-actions{gap:12px}.m-brand-lockup img{width:150px}.m-header-actions .button{padding:12px}}
@media(max-width:960px){.m-header-inner{flex-wrap:wrap;gap:0;min-height:88px}.m-header-actions{margin-left:auto;gap:12px}.m-nav{order:3;flex-basis:100%;display:flex;flex-direction:column;align-items:stretch;gap:0;padding:16px 0 24px;border-top:1px solid var(--line,#dce2ef)}.m-nav[hidden]{display:none}.m-nav>a,.m-nav summary{min-height:54px;justify-content:space-between;border-bottom:1px solid var(--line,#dce2ef)}.m-menu-panel{position:static;width:auto;box-shadow:none;border:0;padding:6px 0 6px 14px;border-radius:0}.m-nav details:last-child .m-menu-panel{right:auto}.m-header-actions .m-signin{display:none}}
@media(max-width:420px){.m-header-actions .button{display:none}.m-brand-lockup img{width:148px}.m-header-inner{min-height:90px}}
@media(max-width:960px){.m-mobile-actions{display:flex;align-items:center;justify-content:space-between;gap:20px;padding-top:20px}.m-mobile-actions>a{font-size:14px;font-weight:700;text-decoration:none;min-height:44px;display:flex;align-items:center}}
@media(prefers-reduced-motion:reduce){.m-nav summary::after{transition:none}}
/* R53: distinct, balanced brand/action and navigation rows. */
@media(min-width:961px){
  .m-header-inner{display:grid;grid-template-columns:1fr auto;gap:0;min-height:0}
  .m-brand-lockup{grid-column:1;grid-row:1;justify-self:start;padding:18px 0 14px}
  .m-header-actions{grid-column:2;grid-row:1;gap:24px}
  .m-nav{grid-column:1/-1;grid-row:2;display:grid;grid-template-columns:repeat(4,1fr);align-items:stretch;gap:0;border-top:1px solid var(--line,#dce2ef);min-height:62px}
  .m-nav>a,.m-nav summary{justify-content:center;min-height:62px;font-size:15px;letter-spacing:.01em}
  .m-menu-panel{left:0;top:100%;width:300px}
  .m-nav details:last-child .m-menu-panel{left:auto;right:0}
}
.site-footer .brand{margin-bottom:22px}
.m-header-actions .m-inquiry-link{font-size:14px;font-weight:600;padding:10px 0;color:var(--ink,#122047);text-decoration:none;border-bottom:1px solid var(--line,#dce2ef)}
.m-nav summary::after{position:static;inset:auto;margin-left:4px}

/* R66: start collapsed on phones before the menu script runs (prevents layout shift). Without JS the menu stays open and usable. */
@media(max-width:960px){.m-js .m-nav:not(.m-nav-ready){display:none}.m-js .m-menu-toggle[hidden]{display:inline-block}}