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.35rem}@media(max-width:820px){.lib-content-row{flex-direction:column}.lib-sidebar{width:100%;max-height:11rem;display:flex;flex-wrap:wrap;gap:.15rem;padding:.45rem}.lib-sidebar-empty{width:100%;margin:.25rem .35rem}.lib-kp-block{width:100%}}.lesson-grid>li,.lesson-tile-wrap{display:flex;min-width:0;position:relative}.lesson-tile__download{position:absolute;right:.65rem;bottom:.65rem;z-index:3;padding:.35rem .7rem;border-radius:999px;background:#28253be0;color:#fff;font-size:12px;font-weight:700;text-decoration:none;box-shadow:0 6px 16px #28253b33;transition:background .12s ease,transform .12s ease}.lesson-tile__download:hover{background:var(--accent);transform:translateY(-1px)}.lesson-tile{display:flex;flex-direction:column;flex:1;width:100%;min-height:100%;overflow:hidden;border-radius:19px;border:1px solid var(--line);background:#fff8f2eb;text-decoration:none;color:inherit;transition:transform .15s ease,box-shadow .15s ease,border-color .15s ease,background .15s ease;position:relative;-webkit-user-select:none;user-select:none;-webkit-touch-callout:none}.lesson-tile:hover{transform:translateY(-2px);box-shadow:0 12px 28px #ff6b1a24}.lesson-grid.is-select-mode .lesson-tile:hover{transform:none}.lesson-tile__poster{position:relative;aspect-ratio:16 / 9;background:radial-gradient(circle at 20% 20%,rgba(255,107,26,.22),transparent 55%),radial-gradient(circle at 80% 70%,rgba(255,176,32,.22),transparent 50%),#ffe8d4;overflow:hidden}.lesson-tile__lab{position:absolute;top:0;right:0;bottom:0;left:0;width:100%;height:100%;border:0;pointer-events:none;background:#f4f7f8;opacity:0}.lesson-tile__lab.is-ready{opacity:1}.lesson-tile__image,.lesson-tile__video{width:100%;height:100%;object-fit:cover;display:block;pointer-events:none;background:#ffe8d4}.lesson-tile__poster-fallback{width:100%;height:100%;display:grid;place-items:center;color:#ff6b1a8c;font-size:2rem;font-weight:750}.lesson-tile__body{display:flex;flex-direction:column;flex:1;gap:.35rem;padding:.85rem 1rem 1rem}.lesson-tile__title{font-weight:750;line-height:1.35;display:-webkit-box;-webkit-box-orient:vertical;-webkit-line-clamp:2;line-clamp:2;overflow:hidden}.lesson-tile code{color:var(--muted);font-size:11px;word-break:break-all}.lesson-tile__time{margin-top:auto;color:var(--muted);font-size:11px;font-variant-numeric:tabular-nums;letter-spacing:.01em}.footer{display:flex;justify-content:center;gap:.5rem;flex-wrap:wrap;margin-top:1.75rem;color:#8a8699;font-size:12px}.job-progress{display:flex;flex-direction:column;gap:.35rem;min-width:7.5rem;max-width:10rem}.job-progress__track{position:relative;height:8px;overflow:hidden;border-radius:999px;background:color-mix(in srgb,var(--accent) 14%,white);border:1px solid color-mix(in srgb,var(--accent) 18%,transparent)}.job-progress__bar{position:absolute;inset:0 auto 0 0;width:42%;border-radius:inherit;background:linear-gradient(90deg,#ffb020,var(--accent));animation:job-progress-slide 1.2s ease-in-out infinite}.job-progress.is-queued .job-progress__bar{opacity:.55;animation-duration:1.8s}.job-progress__label{font-size:12px;color:var(--accent);font-weight:650;letter-spacing:.02em}@keyframes job-progress-slide{0%{transform:translate(-120%)}to{transform:translate(280%)}}@media(max-width:720px){.player-card{border-radius:22px;padding:12px}.log-line{grid-template-columns:3.6rem 1fr}.log-tag{grid-column:1 / -1}}