.app-boot-loading{display:grid;min-height:100vh;grid-template-columns:320px minmax(0,1fr) 360px;background:#fff}.app-boot-rail,.app-boot-sidebar{background:#fbfbfc}.app-boot-sidebar{padding:28px 20px;border-right:1px solid var(--line)}.app-boot-rail{gap:16px;padding:24px;border-left:1px solid var(--line)}.app-boot-main,.app-boot-rail{display:flex;flex-direction:column}.app-boot-main{min-width:0;gap:24px;padding:72px min(8vw,88px)}.app-boot-agent-row{display:flex;align-items:center;gap:14px;margin-bottom:38px}.app-boot-avatar{width:44px;height:44px;border-radius:8px;background:linear-gradient(90deg,#e8e8eb,#f4f4f6 50%,#e8e8eb);background-size:220% 100%;animation:boot-shimmer 1.4s ease-in-out infinite}.app-boot-agent-copy{display:grid;gap:8px;width:128px}.app-boot-nav{width:100%;height:44px;margin-bottom:12px;border-radius:8px;background:#eeeef2}.app-boot-nav.active{background:var(--accent-soft)}.app-boot-nav.short{width:74%}.app-boot-message{display:grid;gap:12px;width:min(680px,100%)}.app-boot-message.user{align-self:flex-end;width:min(360px,52%);margin-top:8px}.app-boot-line{display:block;width:72%;height:12px;border-radius:999px;background:linear-gradient(90deg,#eeeeef,#f8f8f9 50%,#eeeeef);background-size:220% 100%;animation:boot-shimmer 1.4s ease-in-out infinite}.app-boot-line.wide{width:100%}.app-boot-line.title{width:112px}.app-boot-line.chip{width:86px;height:18px}.app-boot-line.user-line{width:100%;height:56px;border-radius:10px}.app-boot-card{height:116px;border:1px solid var(--line);border-radius:8px;background:#fff}.app-boot-card.tall{height:168px}@keyframes boot-shimmer{0%{background-position:100% 0}to{background-position:-100% 0}}@media (max-width:1020px){.app-boot-loading{grid-template-columns:260px minmax(0,1fr)}.app-boot-rail{display:none}}@media (max-width:720px){.app-boot-loading{grid-template-columns:1fr}.app-boot-sidebar{display:none}.app-boot-main{padding:56px 24px}}