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var(--line);z-index:1;border-radius:50%;place-items:center;width:28px;height:28px;font-size:.85rem;font-weight:700;display:grid}.milestone.done .milestone-dot{background:var(--viz-series);border-color:var(--viz-series);color:#fff}.milestone.next .milestone-dot{border-color:var(--viz-series);box-shadow:0 0 0 4px var(--viz-area)}.milestone-label{color:var(--muted);white-space:nowrap;font-size:.78rem}.milestone.done .milestone-label,.milestone.next .milestone-label{color:var(--ink);font-weight:700}.milestone-next{flex-direction:column;gap:6px;display:flex}.meter{background:color-mix(in srgb, var(--viz-series) 15%, var(--card));border-radius:4px;height:8px;overflow:hidden}.meter div{background:var(--viz-series);border-radius:4px;height:100%}.chart-sub{margin:20px 0 0;font-size:.95rem}.viz-dot{fill:var(--viz-series);stroke:var(--card);stroke-width:2px}.viz-cross{stroke:var(--viz-axis);stroke-width:1px}.viz-bar{fill:var(--viz-series)}.viz-bar.on{opacity:.8}.viz-heat{fill:var(--viz-empty)}.viz-heat.l1{fill:var(--viz-l1)}.viz-heat.l2{fill:var(--viz-l2)}.viz-heat.l3{fill:var(--viz-l3)}.viz-heat.l4{fill:var(--viz-l4)}.viz-legend{color:var(--muted);justify-content:flex-end;align-items:center;gap:4px;margin-top:6px;font-size:.75rem;display:flex}.viz-tip{pointer-events:none;background:var(--ink);color:var(--bg);white-space:nowrap;z-index:5;border-radius:8px;flex-direction:column;padding:6px 10px;font-size:.8rem;display:flex;position:absolute;transform:translate(-50%,-100%)}.viz-tip-title{opacity:.75;font-size:.72rem}.data-table summary{cursor:pointer;font-weight:700}.data-table table,.ledger{border-collapse:collapse;font-variant-numeric:tabular-nums;width:100%;margin-top:12px;font-size:.88rem}.data-table th,.data-table td,.ledger td{text-align:left;border-bottom:1px solid var(--line);padding:6px 8px}.data-table th{color:var(--muted);font-weight:500}.lesson-form{flex-direction:column;gap:14px;display:flex}.text-input{border:1px solid var(--line);background:var(--bg);border-radius:10px;width:100%;padding:12px 14px;font-size:1.05rem}.text-input:focus{outline:2px solid var(--accent-soft);border-color:var(--accent)}.examples{align-items:center}.examples .chip{font-size:.85rem}.lesson-list{margin:10px 0 0;padding:0;list-style:none}.lesson-list li a{border-bottom:1px solid var(--line);flex-direction:column;gap:2px;padding:10px 0;text-decoration:none;display:flex}.lesson-list li a:hover strong{color:var(--accent)}.lesson-ja{color:var(--muted);font-size:1.1rem}.lesson-items{margin:0;padding:0;list-style:none}.lesson-items li{border-bottom:1px solid var(--line);align-items:flex-start;gap:10px;padding:10px 0;display:flex}.lesson-items li div{flex-direction:column;gap:2px;display:flex}.lesson-items .ja{font-size:1.25rem;font-weight:500}.lesson-items .kana{font-size:.9rem}.lesson-items .meaning{font-size:.95rem}.tip p{margin:8px 0 0;line-height:1.6}.signin-cta{flex-direction:column;align-items:flex-start;gap:12px;display:flex}.next-hint{color:var(--muted);margin:16px 0 0;font-size:.85rem;animation:.3s fade-in}@keyframes fade-in{0%{opacity:0}to{opacity:1}}.current.is-sentence .unit .glyph{font-size:clamp(1.6rem,4.5vw,2.6rem)}.current.is-sentence .unit .romaji{font-size:.85rem}.plans{grid-template-columns:1fr 1fr;gap:20px;display:grid}.plan{flex-direction:column;gap:12px;display:flex}.plan.featured{border:2px solid var(--accent)}.plan-head{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:10px;display:flex}.price{flex-wrap:wrap;align-items:baseline;gap:8px;margin:0;display:flex}.price strong{font-size:2.2rem}.save{color:var(--good);font-size:.8rem;font-style:normal;font-weight:700}.features{flex-direction:column;flex:1;gap:8px;margin:0;padding:0;list-style:none;display:flex}.features li:before{content:"✓ ";color:var(--good);font-weight:700}.packs{grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:12px;margin-top:12px;display:grid}.pack{border:1px solid var(--line);border-radius:12px;flex-direction:column;align-items:flex-start;gap:8px;padding:16px;display:flex}.price-small{font-size:1.3rem;font-weight:700}.plan-line{align-items:baseline;gap:12px;font-size:1.1rem;display:flex}.credit-breakdown{padding-left:18px;line-height:1.8}.ledger .plus{color:var(--good);text-align:right}.ledger .minus{text-align:right}.prose{max-width:760px;line-height:1.7}.prose h1{margin-top:0}.prose h2{margin-top:28px;font-size:1.1rem}.prose li{margin-bottom:6px}@media (max-width:760px){.main-nav{scrollbar-width:none;flex-basis:100%;order:3;margin:4px 0 0;overflow-x:auto}.main-nav a{padding:6px 8px}.tiles{grid-template-columns:repeat(2,1fr)}.milestone-label small{display:none}.milestone-dot{width:22px;height:22px}.milestone-track:before{top:10px}.chart-pair,.plans{grid-template-columns:1fr}.logo-text{display:none}}