/* R557 desktop — centered work surface; no persistent tool column. */
@media(min-width:1024px){
  body.ia521-body{padding:0!important}
  .ia521-topbar{height:68px!important;padding-inline:clamp(28px,4vw,64px)!important;grid-template-columns:1fr auto 1fr!important}
  .ia557-top-spacer{grid-column:1}.ia521-brand{grid-column:2!important;justify-self:center!important}.ia521-brand small{display:none!important}.ia521-top-actions{grid-column:3!important;justify-self:end!important}
  .ia521-account-drawer{width:330px!important;padding:20px!important}
  .ia541-dashboard{padding:96px clamp(30px,6vw,96px) 34px!important}
  .ia541-chat-shell{width:min(1120px,100%)!important;min-height:calc(100dvh - 130px)!important;padding:22px 30px 26px!important;border-radius:28px!important}
  .ia541-chat-head{padding:0 4px 18px!important}.ia541-chat-log{padding:44px 9% 30px!important}
  .ia541-composer{bottom:16px!important;width:min(900px,100%)!important;margin-inline:auto!important;border-radius:24px!important}
  .ia541-tool-menu{width:520px!important;display:grid!important;grid-template-columns:repeat(2,minmax(0,1fr));gap:4px;padding:10px!important;border-radius:18px!important}
  .ia541-tool-menu[hidden]{display:none!important}.ia541-tool-menu a{min-height:48px;padding:10px 12px;font-size:.82rem}
  .ia521-chat-page{padding-top:68px!important}.ia521-chat-shell{width:min(1180px,calc(100% - 64px))!important;height:calc(100dvh - 98px)!important;margin:16px auto!important;border:1px solid var(--ia557-line)!important;border-radius:26px!important;overflow:hidden;box-shadow:var(--ia557-shadow)!important}
  .r370-app-main,.r300-main,.r540-commerce,.ia531-profile{max-width:1180px!important;margin-inline:auto!important;padding-top:102px!important;padding-inline:30px!important}
  .r500-work-hero,.r540-hero,.ia531-profile-hero{padding:30px!important;border-radius:26px!important}
  .r500-cap-groups{grid-template-columns:repeat(2,minmax(0,1fr))!important;gap:16px!important}
  .r370-tool-page{display:grid;grid-template-columns:minmax(250px,.42fr) minmax(560px,1fr);align-items:start;gap:20px}.r370-tool-intro{position:sticky;top:94px;min-height:260px;padding:30px;border-radius:26px}
  .r370-creative-grid{grid-column:1/-1;grid-template-columns:repeat(3,minmax(0,1fr))!important}.r540-product-grid{grid-template-columns:repeat(3,minmax(0,1fr))!important}
}