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div{display:flex;flex-direction:column}.history-row small{margin-top:3px;color:var(--muted);font-size:11px}.history-row>strong{font-size:16px;color:var(--blue)}.empty-state{padding:40px;text-align:center}.empty-state p{color:var(--muted)}.video-library{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(260px,.8fr);gap:16px}.video-player-card,.video-playlist{background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden}.video-player-card video{display:block;width:100%;max-height:70vh;background:#000}.video-player-card video::-webkit-media-controls-download-button{display:none!important}.video-now{padding:16px 18px 20px}.video-now h2{margin:6px 0;color:var(--navy)}.video-playlist{max-height:70vh;overflow:auto;padding:8px}.playlist-row{width:100%;display:grid;grid-template-columns:28px 1fr;gap:8px;padding:10px;text-align:left;border-radius:10px}.playlist-row.active,.playlist-row:hover{background:#eff6ff}.playlist-row i{display:grid;place-items:center;font-style:normal;font-weight:800;color:var(--blue)}.playlist-row small{display:block;color:var(--muted);font-size:11px}.mobile-nav{display:none}.learning-app .error{margin-bottom:16px;padding:12px 14px;border:1px solid #fecaca;border-radius:10px;background:#fef2f2;color:#b91c1c}@media (min-width: 951px){.library-page--sidebar.is-sidebar-open{grid-template-columns:300px minmax(0,1fr);gap:22px}.library-page--sidebar.is-sidebar-collapsed .practice-sidebar{display:none}}@media (max-width: 950px){.learning-header nav{display:none}.learning-app{padding-bottom:calc(66px + env(safe-area-inset-bottom,0px))}.mobile-nav{position:fixed;inset:auto 0 0;z-index:40;display:grid;grid-template-columns:repeat(4,1fr);min-height:65px;padding-bottom:env(safe-area-inset-bottom,0px);background:#fff;border-top:1px solid var(--line)}.mobile-nav button{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;color:var(--muted);min-height:52px}.mobile-nav button.active{color:var(--blue)}.mobile-nav small{font-size:9px}.stats-grid,.library-page .exam-grid{grid-template-columns:repeat(2,1fr)}.course-grid,.video-library{grid-template-columns:1fr}.practice-sidebar{position:fixed;inset:70px auto 0 0;z-index:45;width:min(320px,92vw);max-height:none;border-radius:0 16px 16px 0;transform:translate(-105%)}.practice-sidebar.is-open{transform:translate(0)}.practice-sidebar__backdrop{display:block;position:fixed;top:70px;right:0;bottom:0;left:0;z-index:44;background:#0f172a59}.practice-sidebar__reopen{display:none}.course-page-heading__menu{display:grid}}@media (max-width: 600px){.learning-header{height:60px;padding:0 16px}.learn-brand img{height:32px}.current-course,.user-menu div,.user-menu>button{display:none}.welcome-banner{min-height:auto;padding:20px 16px}.welcome-banner h1{font-size:21px}.target-score{display:none}.course-grid,.library-page .exam-grid,.stats-grid{grid-template-columns:1fr}.course-card{min-height:0}.course-card>button{position:static;width:100%;margin-top:14px}}