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h3{font-size:1.08rem;font-weight:800}.unit-blurb{color:var(--muted);margin-top:2px;font-size:.83rem}.lessons-group{flex-direction:column;gap:8px;display:flex}.lesson-row{background:var(--card);border:1.5px solid var(--line);text-align:left;border-radius:16px;align-items:center;gap:12px;width:100%;padding:12px 15px;transition:all .14s;display:flex}.lesson-row:not(:disabled):hover{border-color:var(--teal-l);box-shadow:var(--shadow-sm)}.lesson-row.done-row{background:var(--teal-bg);border-color:#bae8e3}.lesson-row:disabled{opacity:.48;cursor:not-allowed}.lesson-info{flex:1}.lesson-info strong{font-size:.93rem;font-weight:700;display:block}.lesson-info small{color:var(--muted);font-size:.78rem;font-weight:600}.dot{border-radius:50%;flex-shrink:0;width:12px;height:12px}.dot.done{box-shadow:0 0 0 4px #ffe299}.chev{color:#b9bfca;font-size:1.2rem;font-weight:700}.glyph{border-radius:14px;flex-shrink:0;place-items:center;width:44px;height:44px;font-size:1.3rem;display:grid}.tabbar{-webkit-backdrop-filter:saturate(1.9)blur(24px);width:min(480px,100%);padding:8px 6px calc(8px + var(--safe-b));z-index:10;background:#ffffffe0;border-top:1px solid #e1e4ea;grid-template-columns:repeat(4,1fr);display:grid;position:fixed;bottom:0;left:50%;transform:translate(-50%)}.tab{color:#8b94a7;background:0 0;border:none;border-radius:10px;flex-direction:column;align-items:center;gap:3px;padding:4px 2px;font-size:.7rem;font-weight:700;transition:color .15s;display:flex}.tab.on{color:var(--teal)}.tab:active{transform:scale(.9)}.tab.on:after{content:"";display:none}.session{min-height:100svh;padding:14px 16px calc(14px + var(--safe-b));background:#fff;flex-direction:column;display:flex}.session-top{grid-template-columns:40px 1fr 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