.quiz-timer{position:sticky;top:82px;z-index:8;max-width:760px;margin:10px auto 18px;padding:12px 18px;border-radius:12px;background:#29304d;color:#fff;display:flex;align-items:center;justify-content:space-between;box-shadow:0 10px 25px #20243e38}.quiz-timer span{font-weight:800}.quiz-timer b{font:800 27px 'Baloo 2';color:#ffdb65}.quiz-timer.warning{background:#c63e50;animation:timerPulse 1s infinite}.lesson-locked{opacity:.68;background:#f0eff4!important;box-shadow:none!important;cursor:not-allowed}.lesson-locked .lesson-number{filter:grayscale(1)}.lesson-stars{margin-top:9px}.lesson-stars span,.result-stars span{color:#d7d4df;font-size:24px}.lesson-stars span.on,.result-stars span.on{color:#ffc928;text-shadow:0 2px 4px #df9c1a45}.lesson-stars em{font-style:normal;color:#7b7690;font-size:13px;font-weight:800;margin-left:8px}.result-stars{margin:7px 0}.result-stars span{font-size:46px}.new-sticker{margin:16px 0;padding:14px;background:#e9fff3;border-radius:12px;color:#16744b}.sticker-page{max-width:1100px;margin:auto}.sticker-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin-top:28px}.sticker-card{position:relative;text-align:center;background:#fff;border:2px solid #eee9ff;border-radius:16px;padding:18px;box-shadow:0 12px 28px #35316d12}.sticker-card img{width:100%;aspect-ratio:1;object-fit:contain}.sticker-card h2{font:800 23px 'Baloo 2';margin:5px}.sticker-card>b{color:#159765}.sticker-card.locked img{filter:grayscale(.85);opacity:.5}.sticker-card.locked:after{content:'🔒';position:absolute;right:18px;top:18px;font-size:27px}.sticker-card form{margin:12px 0 0}.metro-grade-grid .grade-icon img{width:100px;height:100px;object-fit:contain;filter:drop-shadow(0 6px 6px #26305c30)}
.mode-actions .mode-locked{display:flex;align-items:center;justify-content:center;min-height:46px;padding:10px 14px;border-radius:7px;background:#e8e6ed;color:#8b8797;font-weight:800;cursor:not-allowed}.chapter-block:has(.lesson-locked:first-child) .chapter-head{opacity:.9}
@keyframes timerPulse{50%{filter:brightness(1.13)}}
@media(max-width:800px){.sticker-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.quiz-timer{top:72px}}
@media(max-width:520px){.sticker-grid{grid-template-columns:1fr 1fr;gap:9px}.sticker-card{padding:10px}.sticker-card h2{font-size:17px}.sticker-card .primary,.sticker-card .secondary{font-size:13px;padding:10px}.result-stars span{font-size:38px}}