/* Calm shared navigation: brand, destinations, then the account action. */
.site-header{display:grid;grid-template-columns:auto minmax(0,1fr) auto;gap:clamp(20px,3vw,48px);align-items:center;min-height:96px;height:auto;padding:20px 0;border-bottom:1px solid var(--line)}
.main-nav{display:flex;justify-content:center;align-items:center;gap:8px;min-width:0;flex-wrap:wrap}
.main-nav a{display:inline-flex;align-items:center;min-height:44px;padding:10px 14px;border-radius:8px;font-size:14px;line-height:1.5;letter-spacing:0;color:var(--muted);white-space:nowrap;transition:color .18s,background .18s}
.main-nav a:hover,.main-nav a[aria-current=page]{color:var(--ink);background:var(--panel)}
.header-actions{min-width:0;gap:0;justify-content:flex-end}
.header-account{display:block;max-width:240px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:14px;line-height:22px;min-height:44px;padding:10px 18px;background:var(--panel);border:1px solid var(--line);border-radius:8px}
.header-account:hover{border-color:var(--accent);color:var(--ink)}
.site-header a:focus-visible{outline:2px solid var(--accent);outline-offset:4px}
@media(max-width:1000px){.site-header--signed{grid-template-columns:minmax(0,1fr) auto;gap:12px;padding:16px 0}.site-header--signed .main-nav{grid-row:2;grid-column:1/-1;justify-content:flex-start;gap:4px}.site-header--signed .header-actions{grid-column:2;grid-row:1}.main-nav a{padding:8px 12px}.brand{font-size:30px}}
@media(max-width:760px){.site-header{grid-template-columns:minmax(0,1fr) auto;gap:10px;padding:14px 0}.main-nav{grid-row:2;grid-column:1/-1;justify-content:flex-start;gap:2px}.header-actions{grid-column:2;grid-row:1}.main-nav a{min-height:40px}}
@media(max-width:420px){.site-header{column-gap:12px}.header-account{font-size:12px;padding:10px 12px;max-width:180px}.brand{font-size:26px}.main-nav a{font-size:13px;padding:8px 10px}}
@media(prefers-reduced-motion:reduce){.main-nav a{transition:none}}