.lab-lesson{width:100%;text-align:left}.lab-lesson small{display:flex;align-items:center;gap:5px;color:#7054d7;font-size:14px}.lab-lesson svg{width:14px;height:14px}.sheet .save-secondary{background:#eee8fb;color:#664bb8}.lab-shell[hidden]{display:none}.lab-shell{position:fixed;inset:0;z-index:70;display:flex;flex-direction:column;height:100vh;height:100dvh;background:#f6f7fa}.lab-bar{display:flex;flex:none;align-items:center;justify-content:space-between;gap:16px;padding:10px max(16px,env(safe-area-inset-right)) 10px max(16px,env(safe-area-inset-left));padding-top:max(10px,env(safe-area-inset-top));background:#fff;border-bottom:1px solid #e3dfed;box-shadow:0 2px 12px #29184508}.lab-back,.lab-tools button,.lab-tools a{display:inline-flex;align-items:center;justify-content:center;gap:6px;min-height:44px;border-radius:10px;padding:8px 12px;font-size:14px;text-decoration:none;white-space:nowrap}.lab-back{background:#f0eafb;color:#6046b0;font-weight:650}.lab-back svg{width:16px;height:16px;transform:rotate(180deg)}.lab-heading{flex:1;min-width:0}.lab-heading strong{display:block;font-size:16px;color:#282337}.lab-heading span{font-size:13px;color:#82788e}.lab-tools{display:flex;align-items:center;gap:6px}.lab-tools button{color:#716783}.lab-tools a{border:1px solid #e1d9ee;color:#6246b4;background:#faf8ff}.lab-tools a:focus-visible,.lab-back:focus-visible{outline:3px solid #ffb456;outline-offset:2px}.lab-notice{display:flex;align-items:center;gap:12px;padding:12px 18px;background:#f2edff;border-bottom:1px solid #e3daf7;font-size:14px;line-height:1.6;color:#574273}.lab-notice[hidden]{display:none}.lab-notice p{flex:1;margin:0}.lab-notice a{color:#5b3fa5;font-weight:650;white-space:nowrap}.lab-viewport{flex:1;min-height:0;position:relative;background:#f5f6fa}.lab-frame{border:0;display:block;width:100%;height:100%;background:#f5f6fa}.lab-loading{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;flex-direction:column;gap:14px;color:#75678b;pointer-events:none;background:#f8f7fc;font-size:16px;transition:opacity .2s}.lab-loading[hidden]{display:none}.lab-spinner{width:28px;height:28px;border:3px solid #e0d7f1;border-top-color:#7253de;border-radius:50%;animation:lab-spin .8s linear infinite}@keyframes lab-spin{to{transform:rotate(360deg)}}
@media(max-width:600px){.lab-bar{gap:8px;padding-left:10px;padding-right:10px}.lab-back{padding:7px 9px}.lab-back .lab-back-label{display:none}.lab-heading strong{font-size:14px}.lab-heading span{display:none}.lab-tools{gap:2px}.lab-tools button,.lab-tools a{padding:7px 8px;font-size:14px}.lab-notice{padding:10px 12px;align-items:flex-start;flex-wrap:wrap}.lab-notice p{flex-basis:100%}.lab-notice a{min-height:36px;display:flex;align-items:center}}

.apps-grid:has(>.app-card:nth-child(4)){grid-template-columns:repeat(2,minmax(0,1fr))}.phone.is-wide .apps-grid:has(>.app-card:nth-child(4)){grid-template-columns:repeat(2,minmax(0,1fr))}