.site-header{position:sticky;top:0;z-index:100;background:var(--eera-white);color:var(--eera-black);border-bottom:1px solid rgba(0,0,0,.08)}.site-header-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;max-width:1400px;margin:0 auto;padding:16px 40px;min-height:76px}.header-logo-link{display:flex;align-items:center;flex-shrink:0;text-decoration:none}.header-logo{height:48px;width:auto;max-width:280px;display:block;object-fit:contain}.header-nav{display:flex;align-items:center;gap:28px;margin-left:auto}.header-nav-link{color:var(--eera-black);text-decoration:none;font-size:.95rem;font-weight:400;letter-spacing:.02em;line-height:1.2;padding:4px 0;border-bottom:1px solid transparent;transition:color .2s ease,border-color .2s ease}.header-nav-link:visited{color:var(--eera-black)}.header-nav-link:hover,.header-nav-link:visited:hover{color:var(--eera-green);border-bottom-color:var(--eera-green)}.header-menu-toggle{display:none;flex-direction:column;justify-content:center;gap:5px;width:40px;height:40px;padding:8px;background:transparent;border:none;cursor:pointer}.header-menu-toggle span{display:block;height:1.5px;width:100%;background:var(--eera-black);transition:transform .2s ease,opacity .2s ease}.header-menu-toggle.is-open span:nth-child(1){transform:translateY(6.5px) rotate(45deg)}.header-menu-toggle.is-open span:nth-child(2){opacity:0}.header-menu-toggle.is-open span:nth-child(3){transform:translateY(-6.5px) rotate(-45deg)}.header-mobile-nav{display:none}.page-banner{background:var(--eera-paper);color:var(--eera-black);padding:28px 0 12px}.page-banner-inner{display:flex;align-items:flex-start;justify-content:space-between;gap:14px;max-width:1400px;margin:0 auto;padding:0 40px;flex-wrap:wrap}.page-banner-inner>div{flex:1;min-width:0}.page-banner-back{display:inline-block;margin-bottom:12px;color:var(--eera-green);font-size:.85rem;font-weight:400;letter-spacing:.04em;text-decoration:none;border-bottom:1px solid transparent}.page-banner-back:hover,.page-banner-back:visited{color:var(--eera-green)}.page-banner-back:hover{border-bottom-color:var(--eera-green)}.page-banner h1{margin:0;color:var(--eera-black);font-size:clamp(1.75rem,3vw,2.75rem);font-weight:400;letter-spacing:-.02em;line-height:1.15}.page-banner-description{margin:12px 0 0;max-width:42rem;font-size:1.05rem;line-height:1.6;color:var(--eera-grey-dark)}.beta-tag{display:inline-block;color:var(--eera-green);border:1px solid rgba(10,135,84,.35);font-size:.7rem;font-weight:400;letter-spacing:.12em;text-transform:uppercase;padding:3px 8px;border-radius:999px}@media(max-width:900px){.site-header-inner{padding:12px 20px;min-height:64px}.header-logo{height:40px;max-width:200px}.header-nav{display:none}.header-menu-toggle{display:flex}.header-mobile-nav{display:flex;flex-direction:column;padding:8px 20px 28px;background:var(--eera-white);border-top:1px solid rgba(0,0,0,.08)}.header-mobile-link{color:var(--eera-black);text-decoration:none;font-size:1.15rem;font-weight:400;padding:14px 0;border-bottom:1px solid rgba(0,0,0,.08)}.header-mobile-link:hover{color:var(--eera-green)}.page-banner{padding:20px 0 8px}.page-banner-inner{padding:0 20px}}