.site-header{position:sticky;top:0;z-index:20;background:rgba(7,7,8,.94);border-bottom:1px solid var(--line);backdrop-filter:blur(12px)}.header-inner{min-height:68px;display:flex;align-items:center;gap:.75rem}.brand{display:inline-flex;align-items:center;gap:.55rem;text-decoration:none;color:var(--text);font-weight:900}.brand-mark{display:grid;place-items:center;width:34px;height:34px;flex:0 0 34px}.brand-mark svg{display:block;width:34px;height:34px}.brand-text{display:grid;line-height:1.08}.brand-name{font-size:1.25rem;letter-spacing:-.04em}.brand-accent{color:var(--red)}.brand-text small{color:var(--muted);font-size:.62rem;font-weight:650;letter-spacing:.01em}.theme-toggle,.nav-toggle{background:transparent;color:var(--text);border:1px solid var(--line);border-radius:8px}.theme-toggle{margin-left:auto;width:38px;height:38px;font-size:1.05rem}.nav-toggle{display:grid;gap:4px;padding:.58rem}.nav-toggle span:not(.sr-only){display:block;width:21px;height:2px;background:currentColor}.site-nav{display:none;position:absolute;left:0;right:0;top:68px;padding:.75rem 1rem 1rem;background:var(--surface);border-bottom:1px solid var(--line)}.site-nav.open{display:grid}.site-nav a{padding:.7rem;text-decoration:none;font-weight:750;color:var(--muted)}.site-nav a:hover,.site-nav a.is-active{color:var(--text);background:rgba(225,2,2,.12);border-radius:7px}.tool-hero{padding:3.2rem 0 2.5rem;background:radial-gradient(900px 500px at 85% -10%,rgba(225,2,2,.14),transparent 60%),linear-gradient(180deg,#111113,var(--bg))}.breadcrumbs{display:flex;gap:.5rem;color:var(--muted);font-size:.88rem;margin-bottom:1.2rem}.breadcrumbs a:hover{color:var(--gold)}h1,h2,h3{line-height:1.15;letter-spacing:-.035em}h1{font-size:clamp(2.25rem,6vw,4rem);margin:.15rem 0 1rem}.tool-section,.content-section,.faq-section{padding:3.5rem 0}.section-heading{display:flex;align-items:end;justify-content:space-between;gap:1rem;margin-bottom:1.2rem}.section-heading h2{margin:0;font-size:clamp(1.45rem,3vw,2rem)}.content-section{background:#0c0c0e;border-block:1px solid var(--line)}.content-grid{display:grid;gap:2rem}.prose h2{margin:2rem 0 .75rem;font-size:1.55rem}.prose h2:first-of-type{margin-top:0}.prose p{color:var(--muted)}.prose strong{color:var(--text)}.faq-section{padding-bottom:4.5rem}.faq-section h2{font-size:clamp(1.7rem,3vw,2.3rem);margin:.2rem 0 1.3rem}.site-footer{background:#080809;border-top:1px solid var(--line);padding:2.8rem 0 0}.footer-grid{display:grid;gap:2rem}.footer-grid section p{margin:1rem 0 0;max-width:420px;color:var(--muted);font-size:.9rem}.footer-col{display:grid;align-content:start;gap:.45rem}.footer-col h2{font-size:.95rem;margin:0 0 .35rem}.footer-col a{font-size:.88rem;color:var(--muted);text-decoration:none}.footer-col a:hover,.footer-bottom a:hover{color:var(--gold)}.footer-bottom{display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap;margin-top:2.5rem;padding:1.1rem 0;border-top:1px solid var(--line);color:var(--muted);font-size:.76rem}.footer-bottom nav{display:flex;gap:1rem}.footer-bottom a{color:var(--muted)}@media(min-width:700px){.shell{width:min(1200px,calc(100% - 4rem))}.nav-toggle{display:none}.site-nav{display:flex;position:static;padding:0;background:transparent;border:0;gap:.3rem}.site-nav a{padding:.4rem .7rem}.content-grid{grid-template-columns:minmax(0,1.7fr) minmax(270px,.8fr);align-items:start}.footer-grid{grid-template-columns:2fr 1fr 1fr}}@media(max-width:380px){.brand-text small{display:none}.header-inner{gap:.45rem}}/* Desktop footer: four balanced columns, clearer visual hierarchy and no wrapping. */
@media (min-width:700px){
  .footer-grid{grid-template-columns:minmax(250px,1.7fr) repeat(2,minmax(150px,1fr));gap:2rem 2.5rem}
}
@media (min-width:1024px){
  .site-footer{padding-top:3.5rem}
  .footer-grid{grid-template-columns:minmax(300px,1.8fr) repeat(3,minmax(150px,1fr));gap:3rem}
  .footer-brand{padding-right:1.5rem}
  .footer-col h3{font-size:1rem;margin-bottom:.8rem}
  .footer-col ul{gap:.58rem}
  .footer-col a{font-size:.9rem}
  .footer-bottom{margin-top:3rem;padding:1.3rem 0}
}