h1{font-size:clamp(2.3rem,5vw,4rem)}.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin:28px 0}.stat{padding:18px;background:#15231c;color:white;border-radius:18px}.stat strong{display:block;font-size:1.8rem;color:#c7f45b}.learning-grid{display:grid;grid-template-columns:310px 1fr;gap:36px;align-items:start}.learning-grid h2{font-size:1.4rem}.unit{border:1px solid #dbe3db;border-radius:18px;margin:12px 0;background:white}.unit summary{padding:18px;cursor:pointer;font-weight:700}.lesson-link{display:block;width:100%;padding:12px 18px;text-align:left;background:none;border:0;border-top:1px solid #edf0ed;color:#15231c;cursor:pointer;font:inherit}.lesson-link:hover,.lesson-link[aria-current=true]{background:#e8f7cd}.locked{opacity:.6;padding:16px}.lesson-panel{background:white;border:1px solid #dbe3db;padding:clamp(20px,4vw,40px);border-radius:28px;position:sticky;top:24px}.lesson-panel h2{font-size:2rem}.concept{background:#edf6df;padding:24px;border-radius:18px;font-size:1.15rem}.answers{margin:24px 0}.answer{width:100%;text-align:left}.answer.correct{background:#c7f45b}.answer.wrong{border-color:#b34343}.feedback{min-height:60px;margin:18px 0}.controls{display:flex;gap:14px;flex-wrap:wrap}.unit-notes{padding:24px;background:#fffde9;line-height:1.8;border-radius:18px;background-image:repeating-linear-gradient(transparent,transparent 31px,#c1d4dc 32px)}.note-row{margin-bottom:18px}.cue{min-height:180px;width:100%;padding:28px;background:#15231c;color:white;border:0;border-radius:20px;font:inherit;cursor:pointer}.consent{padding:18px;border:1px solid #dbe3db;border-radius:16px}.consent button{margin:6px}.rating button{margin:8px;padding:12px 18px;border-radius:12px;background:#e8f7cd;border:1px solid #15231c;cursor:pointer;font:inherit}.task-bar{height:8px;background:#e6ebe5;border-radius:8px;margin:20px 0;overflow:hidden}.task-bar span{display:block;height:100%;background:#8ac72b;transition:width .3s}.burst{animation:pop .4s ease}.small-copy{font-size:.9rem;color:#526353}#save-status{font-size:.9rem}@keyframes pop{50%{transform:scale(1.03)}}@media(max-width:850px){.learning-grid{grid-template-columns:1fr}.lesson-panel{position:static}.stats{grid-template-columns:repeat(2,1fr)}.learning-grid aside{max-height:340px;overflow:auto}.header{gap:12px}}@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}