.academy-loading{min-height:100dvh;display:flex;background:var(--color-surface-page);color:var(--text-tertiary)}.academy-loading i,.loading-content-only i{display:block;height:12px;border-radius:6px;background:linear-gradient(100deg,var(--surface-sunken) 15%,var(--surface-hover) 40%,var(--surface-sunken) 65%);background-size:250% 100%;animation:academy-shimmer 1.8s ease-in-out infinite}.loading-sidebar{flex:0 0 240px;padding:18px 12px;display:flex;flex-direction:column;border-right:1px solid var(--color-border-subtle);background:var(--color-surface-page)}.loading-sidebar .brand-mark{width:140px;padding:6px 10px 22px}.loading-nav{display:grid;gap:10px;margin-top:20px}.loading-nav i{height:30px}.academy-loading .loading-circle{width:32px;height:32px;border-radius:50%;flex-shrink:0}.loading-body{flex:1;min-width:0}.loading-header{height:72px;display:flex;align-items:center;justify-content:space-between;padding:0 40px;background:var(--surface-glass);border-bottom:1px solid var(--color-border-subtle)}.loading-header>i:first-child{width:180px;height:18px}.loading-content{width:100%;max-width:1400px;margin:0 auto;padding:40px}.loading-caption{display:flex;gap:10px;align-items:center;margin-bottom:24px;font:12px var(--font-mono)}.loading-caption span{width:6px;height:6px;border-radius:50%;background:var(--color-brand-primary)}.loading-hero{position:relative;overflow:hidden;display:flex;align-items:flex-end;min-height:clamp(320px,42vh,460px);padding:40px;border-radius:22px;background:var(--surface-sunken)}.loading-hero>div:first-child{width:min(520px,70%)}.loading-hero i{margin:16px 0;width:85%}.loading-hero i:first-child{width:65%;height:28px}.loading-hero i:last-child{width:120px;height:38px;margin-top:28px}.academy-loading .loading-section,.loading-content-only .loading-section{width:180px;height:20px;margin:36px 0 20px}.loading-cards{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:22px}.loading-card{display:grid;gap:12px}.loading-card>div{aspect-ratio:16/9;border-radius:14px;background:linear-gradient(100deg,var(--surface-sunken) 15%,var(--surface-hover) 40%,var(--surface-sunken) 65%) 0 0 /250% 100%;animation:academy-shimmer 1.8s ease-in-out infinite}.loading-card section{display:grid;gap:8px}.loading-card i:first-child{width:75%}.loading-card i:last-child{width:45%;height:10px}.loading-content-only{padding:0;color:var(--text-tertiary)}@keyframes academy-shimmer{to{background-position:-250% 0}}@media (max-width:900px){.loading-sidebar{flex-basis:210px}.loading-cards{grid-template-columns:1fr 1fr}.loading-card:nth-child(n+3){display:none}.loading-content{padding:28px 24px}}@media (max-width:640px){.loading-sidebar{display:none}.loading-header{height:64px;padding:0 16px}.loading-content{padding:28px 20px}.loading-hero{min-height:200px;padding:24px}.loading-hero>div:first-child{width:100%}.loading-cards{grid-template-columns:1fr}.loading-card:nth-child(n+2){display:none}}@media (prefers-reduced-motion:reduce){.academy-loading i,.loading-card>div,.loading-content-only i,.loading-hero{animation:none}}