/* Existing PETRO masthead, isolated to the owner's selected homepage. */
@font-face{font-family:"Instrument Sans";src:url('/fonts/instrument-sans.woff2') format('woff2');font-weight:400 500;font-style:normal;font-display:swap}
.site-header{--header-rule:#f3ede240;background:#04241a;color:#f3ede2;padding:0 max(5%,calc((100% - 1116px)/2));margin:0;width:100%;position:relative;z-index:40}
.site-header a{color:inherit;text-decoration:none}
.site-header a:hover{text-decoration:underline;text-underline-offset:5px}
.site-header :focus-visible{outline:2px solid #7fe3be;outline-offset:5px}
.site-header .site-mast{display:grid;grid-template-columns:minmax(0,1fr) auto minmax(0,1fr);align-items:center;padding:22px 0 18px;border-bottom:1px solid var(--header-rule)}
.site-header .mast-name{font:400 49px/1 Prata,Georgia,serif;letter-spacing:.16em;padding-left:.16em}
.site-header .mast-name:hover{text-decoration:none}
.site-header .mast-note{font:500 12px/1.65 "Instrument Sans",Arial,sans-serif;letter-spacing:.015em;text-transform:none}
.site-header .mast-note:last-child{text-align:right}
.site-header .site-nav{border-bottom:1px solid var(--header-rule);display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px 18px;padding:13px 0;font:500 12px/1.5 "Instrument Sans",Arial,sans-serif;letter-spacing:.015em}
.site-header .site-nav a{white-space:nowrap;min-height:44px;display:flex;align-items:center;padding:10px 0}
.site-header .site-nav .nav-consult{margin-left:auto;border-bottom:1px solid #7fe3be;color:#7fe3be}
.site-header .menu-toggle{display:none}
@media(max-width:950px){.site-header .site-nav{font-size:11px;gap:12px 16px}}
@media(max-width:640px){
 .site-header{padding-inline:6%}
 .site-header .site-mast{padding:17px 0;gap:8px}
 .site-header .mast-name{font-size:39px}
 .site-header .mast-note{font-size:9px;line-height:1.55;letter-spacing:0;max-width:92px}
 .site-header .mast-note:last-child{justify-self:end}
 .site-header .menu-toggle{display:flex;align-items:center;justify-content:space-between;width:100%;min-height:44px;padding:14px 0;background:transparent;color:inherit;border:0;border-bottom:1px solid var(--header-rule);font:500 14px/1.5 "Instrument Sans",Arial,sans-serif;cursor:pointer}
 .site-header .site-nav{display:none;font-size:14px}
 .site-header .site-nav.open{display:grid;grid-template-columns:1fr;gap:0;padding:7px 0}
 .site-header .site-nav a{width:100%}
 .site-header .site-nav .nav-consult{margin-left:0;justify-self:start;width:auto}
}
@media(max-width:360px){.site-header .mast-name{font-size:32px}.site-header .mast-note{font-size:8px}}