:root { --erc-navy: #020617; --erc-amber: #f59e0b; }
.site-header { position: relative; z-index: 60; background: var(--erc-navy); color: #fff; border-bottom: 1px solid rgba(255,255,255,.12); }
.site-header__inner { width: min(100% - 2.5rem, 80rem); min-height: 4.75rem; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.site-header__brand { display: inline-flex; align-items: center; gap: .55rem; color: #fff; font-size: 1.125rem; font-weight: 800; letter-spacing: -.03em; text-decoration: none; white-space: nowrap; }
.site-header__brand-mark { display: grid; place-items: center; width: 1.7rem; height: 1.7rem; border-radius: .5rem; background: var(--erc-amber); color: #111827; font-size: 1rem; }
.site-header__brand em { color: #fbbf24; font-style: normal; }
.site-header__desktop { display: flex; align-items: center; gap: .25rem; }
.site-header__link { display: inline-flex; align-items: center; min-height: 2.75rem; padding: .55rem .7rem; border-radius: .5rem; color: #dbeafe; font-size: .875rem; font-weight: 650; text-decoration: none; transition: color .18s ease, background .18s ease; }
.site-header__link:hover, .site-header__link:focus-visible, .site-header__link[aria-current="page"] { color: #fff; background: rgba(245,158,11,.18); }
.site-header__link[aria-current="page"] { box-shadow: inset 0 -2px 0 var(--erc-amber); }
.site-header__cta { display: inline-flex; align-items: center; justify-content: center; min-height: 2.75rem; padding: .65rem 1rem; border-radius: 999px; background: var(--erc-amber); color: #111827; font-size: .875rem; font-weight: 800; text-decoration: none; transition: transform .18s ease, background .18s ease; white-space: nowrap; }
.site-header__cta:hover, .site-header__cta:focus-visible { background: #fbbf24; transform: translateY(-1px); }
.site-header__toggle { display: none; align-items: center; justify-content: center; width: 2.75rem; height: 2.75rem; border: 1px solid rgba(255,255,255,.25); border-radius: .6rem; background: transparent; color: #fff; cursor: pointer; }
.site-header__toggle-icon { width: 1.35rem; height: 1.35rem; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; }
.site-header__overlay { position: fixed; inset: 0; z-index: 70; background: rgba(2,6,23,.66); opacity: 0; pointer-events: none; transition: opacity .2s ease; }
.site-header__mobile { position: fixed; z-index: 80; top: 0; right: 0; width: min(22rem, 90vw); height: 100dvh; padding: 1.25rem; background: #fff; color: #0f172a; transform: translateX(100%); transition: transform .24s ease; box-shadow: -16px 0 36px rgba(2,6,23,.3); overflow-y: auto; }
.site-header.is-open .site-header__overlay { opacity: 1; pointer-events: auto; }
.site-header.is-open .site-header__mobile { transform: translateX(0); }
.site-header__mobile-top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 1.5rem; }
.site-header__close { display: inline-flex; align-items: center; justify-content: center; width: 2.75rem; height: 2.75rem; border: 1px solid #cbd5e1; border-radius: .6rem; background: #fff; color: #0f172a; cursor: pointer; }
.site-header__mobile-nav { display: grid; gap: .35rem; }
.site-header__mobile .site-header__link { color: #1e293b; padding: .8rem .75rem; }
.site-header__mobile .site-header__link:hover, .site-header__mobile .site-header__link:focus-visible, .site-header__mobile .site-header__link[aria-current="page"] { color: #92400e; background: #fffbeb; }
.site-header__mobile .site-header__cta { width: 100%; margin-top: 1rem; }
.site-header :focus-visible { outline: 3px solid #fbbf24; outline-offset: 3px; }
body.site-menu-open { overflow: hidden; }
@media (max-width: 980px) { .site-header__desktop, .site-header__desktop-cta { display: none; } .site-header__toggle { display: inline-flex; } }
@media (max-width: 420px) { .site-header__inner { width: min(100% - 1.5rem, 80rem); min-height: 4.25rem; } .site-header__brand { font-size: 1rem; } }