/* Rose: single-line desktop navigation inspired by the V2 header. */
.v4-header .rose-header-social{display:none}
.skin-rose .v4-header-caption{display:none}
.skin-rose .v4-header .rose-header-social{display:flex;align-items:center;gap:12px;flex-shrink:0}
.skin-rose .rose-header-social a{display:inline-flex;align-items:center;justify-content:center;width:28px;height:32px;color:var(--ink);opacity:.8}
.skin-rose .rose-header-social a:hover{opacity:1;color:var(--green)}
.skin-rose .rose-header-social svg{width:16px;height:16px;}
.skin-rose .v4-header a:focus-visible,.skin-rose .v4-header button:focus-visible,.skin-rose .v4-header summary:focus-visible{outline:2px solid var(--green);outline-offset:4px}
@media(min-width:1280px){
 .skin-rose .v4-header{display:grid;grid-template-columns:auto minmax(0,1fr) auto auto;align-items:center;gap:22px;padding:22px max(28px,calc((100vw - 1400px)/2));min-height:100px;background:var(--paper);border-bottom:1px solid var(--line)}
 .skin-rose .v4-masthead,.skin-rose .v4-navline,.skin-rose .v4-navline>.wrap{display:contents}
 .skin-rose .v4-masthead>.brand{grid-column:1;grid-row:1;justify-self:start}
 .skin-rose .v4-masthead .logo{width:190px;max-width:190px;border-radius:0}
 .skin-rose .v4-header .main-nav{grid-column:2;grid-row:1;display:flex;justify-content:flex-end;align-items:center;gap:18px;min-width:0}
 .skin-rose .v4-header .main-nav>a,.skin-rose .v4-header .nav-dropdown>summary{padding:14px 0;border:0;border-bottom:1px solid transparent;border-radius:0;background:transparent;color:var(--ink);font-size:.78rem;font-weight:600;white-space:nowrap}
 .skin-rose .v4-header .main-nav>a:hover,.skin-rose .v4-header .main-nav>a[aria-current=page],.skin-rose .v4-header .nav-dropdown[open]>summary{color:var(--green);border-bottom-color:var(--green);background:transparent}
 .skin-rose .v4-header .rose-header-social{max-width:160px;overflow-x:auto;scrollbar-width:thin}
 .skin-rose .v4-header .rose-header-social a{flex-shrink:0}
 .skin-rose .v4-header .v4-tools{grid-column:3;grid-row:1;display:flex;gap:12px;justify-self:end}
 .skin-rose .v4-tools .languages{border-inline-start:1px solid var(--line);padding-inline-start:12px;gap:2px}
 .skin-rose .v4-tools .languages a{border-radius:0;font-size:.65rem;padding:7px 6px}
 .skin-rose .v4-tools .theme-toggle{width:34px;height:34px;border-radius:0}
 .skin-rose .v4-header .v4-book{grid-column:4;grid-row:1;border-radius:0;padding:12px 18px;background:var(--green);color:var(--on-accent);font-size:.75rem;white-space:nowrap}
 .skin-rose .v4-header .menu-toggle{display:none}
 .skin-rose .v4-header .nav-submenu{z-index:80}
}
@media(min-width:1001px) and (max-width:1279px){
 .skin-rose .v4-masthead{grid-template-columns:1fr auto;min-height:90px}
 .skin-rose .v4-header .main-nav{gap:20px}
}
@media(min-width:651px) and (max-width:1000px){
 .skin-rose .v4-header .rose-header-social{gap:4px}
}
@media(max-width:650px){
 .skin-rose .v4-tools .rose-header-social{grid-column:1;grid-row:3;justify-self:start;gap:8px;flex-wrap:wrap;max-width:100%}
 .skin-rose .v4-tools .languages{grid-column:1;grid-row:2}
 .skin-rose .v4-tools .theme-toggle{grid-column:2;grid-row:2}
 .skin-rose .v4-header .rose-header-social a{width:30px;height:30px}
}
@media(prefers-reduced-motion:reduce){.skin-rose .v4-header *{scroll-behavior:auto}}