.site-header{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:24px 64px;color:#fff;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif}
.site-header__logo{display:flex;align-items:center;gap:12px;font-size:20px;font-weight:600;color:inherit;text-decoration:none;white-space:nowrap}
.site-header__logo img{height:42px;width:auto}
.site-header__nav{display:flex;align-items:center;flex-wrap:wrap;gap:12px 32px}
.site-header__nav a{color:#fff;text-decoration:none;font-size:14px;opacity:.8}
.site-header__nav a:hover,.site-header__nav a:focus-visible{opacity:1}
@media(max-width:900px){.site-header{padding:20px 24px;flex-wrap:wrap}.site-header__nav{gap:12px 20px}}

/* Mobile-only additions. All original desktop rules above are unchanged. */
.site-header__mobile-toggle,
.site-header__mobile-panel { display:none; }

@media (max-width:900px) {
  .site-header {
    position:relative;
    display:grid;
    grid-template-columns:38px minmax(0,1fr) 38px;
    align-items:center;
    gap:8px;
    padding:16px 12px;
    flex-wrap:nowrap;
  }
  .site-header__nav { display:none; }
  .site-header__brand-theme { grid-column:2;grid-row:1;justify-self:center;min-width:0; }
  .site-header__logo { gap:6px;font-size:clamp(12px,3.6vw,18px); }
  .site-header__logo img { height:32px; }
  .site-header__brand-theme .theme-toggle {
    margin-left:6px;flex:0 0 28px;width:28px;height:28px;font-size:19px;
  }
  .site-header__mobile-toggle {
    display:flex;flex-direction:column;align-items:center;justify-content:center;
    gap:5px;width:38px;height:38px;padding:7px;
    background:transparent;border:1px solid currentColor;border-radius:7px;
    color:inherit;cursor:pointer;
  }
  .site-header__mobile-toggle span { display:block;width:20px;height:2px;background:currentColor;border-radius:2px; }
  .site-header__mobile-toggle--left { grid-column:1;grid-row:1; }
  .site-header__mobile-toggle--right { grid-column:3;grid-row:1; }
  .site-header__mobile-panel:not([hidden]) {
    display:block;position:absolute;top:100%;left:12px;z-index:1000;
    width:min(280px,calc(100vw - 24px));box-sizing:border-box;
    background:#0b1020;color:#f6f8ff;
    border:1px solid rgba(255,255,255,.17);border-radius:10px;
    box-shadow:0 12px 28px rgba(0,0,0,.3);
    max-height:calc(100dvh - 85px);overflow-y:auto;
  }
  .site-header__mobile-navigation:not([hidden]) { width:225px; padding:8px 0; }
  .site-header__mobile-navigation a {
    display:block;padding:10px 17px;font-size:14px;color:inherit;text-decoration:none;
  }
  .site-header__mobile-navigation a:hover,
  .site-header__mobile-navigation a:focus-visible { text-decoration:underline; }
  .site-header__mobile-contact:not([hidden]) {
    left:auto;right:12px;width:225px;padding:18px 10px;
    /* UK map is behind the text, not beside or above it. */
    background-color:#080c18;
    background-image:linear-gradient(rgba(8,12,24,.84),rgba(8,12,24,.84)),url('/assets/uk-london.svg');
    background-position:center center;background-repeat:no-repeat;background-size:auto 82%;
  }
  .site-header__contact-content { position:relative;z-index:1;font-size:12px;line-height:1.5;overflow-wrap:anywhere; }
  .site-header__contact-section { padding:0 0 13px;margin:0 0 13px;border-bottom:1px solid rgba(255,255,255,.26); }
  .site-header__contact-section:last-child { margin-bottom:0; }
  .site-header__company-name { display:block;font-size:17px;margin-bottom:5px; }
  .site-header__contact-section p { margin:0; }
  .site-header__contact-section h2 { margin:0 0 8px;font-size:11px;letter-spacing:1.2px;color:#e6c17c;font-weight:700; }
  .site-header__contact-section address { font-style:normal;line-height:1.6; }
  .site-header__contact-section a { color:inherit;text-decoration:none; }
  .site-header__contact-section a:hover,
  .site-header__contact-section a:focus-visible { text-decoration:underline; }
  .site-header__contact-external { display:flex;align-items:center;flex-wrap:wrap;gap:8px; }
  .site-header__contact-policies a { display:block;padding:4px 0; }
  html[data-theme="light"] .site-header__mobile-panel:not([hidden]) {
    background-color:#fff;color:#18253a;
    border-color:rgba(20,40,65,.2);
    box-shadow:0 12px 28px rgba(20,40,65,.14);
  }
  html[data-theme="light"] .site-header__mobile-contact:not([hidden]) {
    background-image:linear-gradient(rgba(255,255,255,.85),rgba(255,255,255,.85)),url('/assets/uk-london.svg');
  }
  html[data-theme="light"] .site-header__contact-section { border-bottom-color:rgba(20,40,65,.24); }
  html[data-theme="light"] .site-header__contact-section h2 { color:#9b6a20; }
}