:root{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;--bg:#f6f1e8;--card:#fffdf9;--ink:#221d17;--muted:#6f665c;--line:#e6dccd;--accent:#c8452c;--accent-ink:#fff;--good:#2f8f5b;--bad:#c8452c;--hue:20;--radius:18px;--shadow:0 1px 2px #3c28140f, 0 8px 24px -12px #3c28142e;--font-jp:system-ui, -apple-system, "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", "Yu Gothic", sans-serif}*{box-sizing:border-box}html,body{background:var(--bg);color:var(--ink);margin:0;padding:0}body{font-family:var(--font-jp);-webkit-font-smoothing:antialiased;-webkit-tap-highlight-color:transparent;font-size:16px;line-height:1.45}button{font:inherit;color:inherit}a{color:inherit}.app{max-width:540px;min-height:100dvh;padding:calc(env(safe-area-inset-top) + 12px) 16px calc(env(safe-area-inset-bottom) + 24px);flex-direction:column;gap:16px;margin:0 auto;display:flex}.topbar{justify-content:space-between;align-items:center;gap:12px;display:flex}.brand{align-items:baseline;gap:8px;min-width:0;display:flex}.brand-jp{letter-spacing:.02em;white-space:nowrap;font-size:22px;font-weight:700}.brand-en{color:var(--muted);white-space:nowrap;text-overflow:ellipsis;font-size:13px;overflow:hidden}.iconbtn{border:1px solid var(--line);background:var(--card);cursor:pointer;border-radius:999px;align-items:center;gap:6px;min-width:40px;height:40px;padding:0 12px;font-size:14px;display:inline-flex}.iconbtn:active{transform:scale(.97)}.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:16px}.btn{cursor:pointer;background:var(--card);border:none;border:1px solid var(--line);border-radius:14px;justify-content:center;align-items:center;gap:8px;min-height:52px;padding:14px 18px;font-size:16px;font-weight:600;display:inline-flex}.btn:active{transform:translateY(1px)}.btn:disabled{opacity:.5;cursor:default}.btn-primary{background:var(--accent);color:var(--accent-ink);border-color:#0000}.btn-block{width:100%}.btn-ghost{color:var(--muted);background:0 0;border-color:#0000}.row{align-items:center;gap:10px;display:flex}.row-between{justify-content:space-between}.wrap{flex-wrap:wrap}.stack{flex-direction:column;gap:10px;display:flex}.muted{color:var(--muted)}.small{font-size:13px}.tiny{font-size:12px}h1,h2,h3{margin:0;line-height:1.2}h2{font-size:18px}h3{font-size:15px}.section-title{justify-content:space-between;align-items:baseline;margin:6px 2px 0;display:flex}.hero{grid-template-columns:1fr auto;align-items:center;gap:14px;display:grid}.hero .stat{text-align:center}.hero .stat b{font-size:22px;display:block}.daily{color:#fff;background:linear-gradient(135deg,#e76423,#ca2b45);border:none}.daily .btn{color:var(--accent);background:#fffffff2;border:none}.daily .muted{color:#ffffffd9}.box-grid{grid-template-columns:repeat(2,1fr);gap:12px;display:grid}.box-card{--h:var(--hue);text-align:left;cursor:pointer;border-radius:var(--radius);border:1px solid var(--line);background:linear-gradient(180deg, hsl(var(--h) 70% 97%), var(--card));box-shadow:var(--shadow);flex-direction:column;gap:8px;min-height:120px;padding:14px;display:flex}.box-card .box-jp{color:hsl(var(--h) 55% 38%);font-size:22px;font-weight:700}.box-card .box-title{font-weight:600}.box-card .box-meta{justify-content:space-between;align-items:flex-end;display:flex}.ring{display:inline-block}.pill{background:hsl(var(--h,20) 60% 92%);color:hsl(var(--h,20) 50% 30%);border-radius:999px;padding:2px 8px;font-size:12px;display:inline-block}.pill-due{color:#a33420;background:#fde8e3}.pill-new{color:#2b5d8f;background:#e8f1fb}.dots{justify-content:center;gap:6px;display:flex}.dot{background:var(--line);border-radius:50%;width:10px;height:10px}.dot.on{background:var(--accent);transform:scale(1.2)}.dot.ok{background:var(--good)}.dot.ng{background:var(--bad)}.exercise{flex-direction:column;gap:16px;display:flex}.ex-type{text-transform:uppercase;letter-spacing:.08em;color:var(--muted);font-size:12px}.prompt{word-break:keep-all;overflow-wrap:anywhere;font-size:28px;font-weight:700;line-height:1.3}.prompt.en{font-size:22px;font-weight:600}.prompt-sub{color:var(--muted)}.prompt-aside{color:var(--muted);font-size:15px}.choices{gap:10px;display:grid}.choice{text-align:left;border:1.5px solid var(--line);background:var(--card);cursor:pointer;border-radius:14px;justify-content:space-between;align-items:center;min-height:52px;padding:14px 16px;font-size:18px;display:flex}.choice.selected{border-color:var(--ink)}.choice.correct{border-color:var(--good);background:#eaf6ee}.choice.wrong{border-color:var(--bad);background:#fbebe7}.choice:disabled{cursor:default}.textinput{width:100%;font:inherit;border:1.5px solid var(--line);background:var(--card);border-radius:14px;outline:none;padding:14px 16px;font-size:22px}.textinput:focus{border-color:var(--ink)}.textinput.correct{border-color:var(--good);background:#eaf6ee}.textinput.wrong{border-color:var(--bad);background:#fbebe7}.tiles{border:1.5px dashed var(--line);background:#ffffff80;border-radius:14px;flex-wrap:wrap;gap:8px;min-height:56px;padding:10px;display:flex}.tile{border:1.5px solid var(--line);background:var(--card);cursor:pointer;box-shadow:0 1px 0 var(--line);border-radius:12px;padding:10px 14px;font-size:20px}.tile:disabled{opacity:.35;cursor:default}.tile.ghost{visibility:hidden}.tiles.answer.correct{border-color:var(--good);background:#eaf6ee}.tiles.answer.wrong{border-color:var(--bad);background:#fbebe7}.pairs{grid-template-columns:1fr 1fr;gap:10px;display:grid}.pairs .col{flex-direction:column;gap:10px;display:flex}.pair{border:1.5px solid var(--line);background:var(--card);cursor:pointer;text-align:center;border-radius:12px;justify-content:center;align-items:center;min-height:56px;padding:12px 10px;font-size:17px;display:flex}.pair.selected{border-color:var(--ink)}.pair.done{opacity:.35;border-style:dashed}.pair.shake{border-color:var(--bad);animation:.3s shake}@keyframes shake{0%,to{transform:translate(0)}25%{transform:translate(-4px)}75%{transform:translate(4px)}}.feedback{border-radius:14px;flex-direction:column;gap:6px;padding:14px 16px;display:flex}.feedback.ok{background:#eaf6ee;border:1px solid #bfe2cb}.feedback.ng{background:#fbebe7;border:1px solid #f1c6bc}.feedback .answer{font-size:20px;font-weight:700}.score{text-align:center;font-size:56px;font-weight:800;line-height:1}.score small{color:var(--muted);font-size:20px;font-weight:600}.result-list{flex-direction:column;gap:6px;display:flex}.result-row{border-bottom:1px solid var(--line);align-items:center;gap:10px;padding:8px 0;display:flex}.result-row:last-child{border-bottom:none}.mark{color:#fff;border-radius:50%;flex:none;justify-content:center;align-items:center;width:24px;height:24px;font-size:14px;display:inline-flex}.mark.ok{background:var(--good)}.mark.ng{background:var(--bad)}.delta{font-variant-numeric:tabular-nums}.delta.up{color:var(--good)}.delta.down{color:var(--bad)}.bar{background:var(--line);border-radius:3px;flex:1;height:6px;overflow:hidden}.bar>i{background:hsl(var(--h,20) 65% 50%);height:100%;display:block}.item-row{border-bottom:1px solid var(--line);grid-template-columns:1fr auto;align-items:center;gap:8px 12px;padding:10px 0;display:grid}.item-row:last-child{border-bottom:none}.item-row .jp{font-size:18px;font-weight:600}.item-row .en{color:var(--muted);font-size:14px}.item-row .bar{flex:none;width:72px}.chips{flex-wrap:wrap;gap:8px;display:flex}.chip{border:1px solid var(--line);background:var(--card);cursor:pointer;border-radius:999px;padding:6px 12px;font-size:14px}.chip.on{background:var(--ink);color:#fff;border-color:var(--ink)}.lesson-row{border-bottom:1px solid var(--line);align-items:center;gap:12px;padding:10px 0;display:flex}.lesson-row:last-child{border-bottom:none}.lesson-row .t{touch-action:manipulation;-webkit-user-select:none;user-select:none;cursor:pointer;flex:1}.lesson-row .t b{display:block}.lesson-row .t span{color:var(--muted);font-size:13px}.switch{background:var(--line);cursor:pointer;border:none;border-radius:999px;flex:none;width:46px;height:28px;position:relative}.switch:after{content:"";background:#fff;border-radius:50%;width:22px;height:22px;transition:transform .15s;position:absolute;top:3px;left:3px;box-shadow:0 1px 2px #0003}.switch.on{background:var(--good)}.switch.on:after{transform:translate(18px)}.switch:disabled{opacity:.5;cursor:default}select,input[type=text],input[type=number]{font:inherit;border:1px solid var(--line);background:var(--card);border-radius:12px;padding:10px 12px}.footer-actions{background:linear-gradient(180deg, transparent, var(--bg) 30%);padding-top:8px;position:sticky;bottom:0}@media (width>=720px){.app{padding-top:32px}.box-grid{grid-template-columns:repeat(2,1fr)}}ruby{ruby-position:over}rt{color:var(--muted);letter-spacing:0;font-size:.45em;font-weight:500}.prompt ruby rt{font-size:.42em}.canvas-wrap{flex-direction:column;align-items:center;gap:10px;display:flex}.kana-canvas{aspect-ratio:1;border:1.5px solid var(--line);background:var(--card);touch-action:none;width:min(100%,300px);box-shadow:var(--shadow);border-radius:16px;display:block}.kana-canvas.correct{border-color:var(--good)}.kana-canvas.wrong{border-color:var(--bad)}.canvas-tools{gap:8px;display:flex}.facets{flex-wrap:wrap;justify-content:flex-end;gap:5px;display:flex}.facet{flex-direction:column;align-items:center;gap:2px;min-width:26px;display:flex}.facet .lbl{color:var(--muted);white-space:nowrap;font-size:10px;line-height:1}.facet .bar{flex:none;width:26px;height:5px}.facet.new .bar>i{background:var(--line)}.facet.due .bar{outline-offset:1px;outline:1.5px solid #e9a89b}.item-row{grid-template-columns:1fr auto}.legend{color:var(--muted);flex-wrap:wrap;gap:6px 12px;font-size:12px;display:flex}.audio-controls{flex-wrap:wrap;gap:8px;display:flex}.audio-controls .btn{min-height:44px;padding:8px 14px}.audio-controls .btn.playing{border-color:var(--accent);color:var(--accent)}.hidden-text{color:var(--muted);font-size:18px;font-weight:500}.dialogue{flex-direction:column;gap:8px;display:flex}.line{align-items:flex-start;gap:8px;display:flex}.line .who{min-width:52px;color:var(--muted);text-align:right;flex:none;padding-top:8px;font-size:12px}.line .bubble{background:var(--bg);border:1px solid var(--line);border-radius:14px;max-width:100%;padding:8px 12px;font-size:18px;line-height:1.5}.line.b .who{text-align:left;order:2}.line.b .bubble{background:#f4effb;border-color:#d6c9e8}.line .bubble .en{color:var(--muted);margin-top:2px;font-size:13px;display:block}.line .bubble.muted-line{color:var(--muted);font-size:15px;font-style:italic}.mic{flex-direction:column;align-items:center;gap:10px;display:flex}.mic-btn{border:2px solid var(--line);background:var(--card);cursor:pointer;width:96px;height:96px;box-shadow:var(--shadow);border-radius:50%;justify-content:center;align-items:center;font-size:40px;display:inline-flex}.mic-btn.listening{border-color:var(--accent);animation:1s infinite pulse}@keyframes pulse{0%,to{box-shadow:0 0 #c8452c59}50%{box-shadow:0 0 0 14px #c8452c00}}.heard{font-size:20px;font-weight:600}.clock-wrap{flex-direction:column;align-items:center;gap:10px;display:flex}.clock{aspect-ratio:1;touch-action:none;width:min(100%,260px)}.clock .face{fill:var(--card);stroke:var(--line);stroke-width:2px}.clock .tick{stroke:var(--muted);stroke-width:1.5px}.clock .num{fill:var(--ink);text-anchor:middle;dominant-baseline:central;font-size:12px;font-weight:600}.clock .hand{stroke-linecap:round}.clock .hand.hour{stroke:var(--ink);stroke-width:6px}.clock .hand.minute{stroke:var(--accent);stroke-width:4px}.clock .hand.active{filter:drop-shadow(0 0 4px #c8452c80)}.clock-readout{font-variant-numeric:tabular-nums;font-size:28px;font-weight:700}.clock-mode{gap:8px;display:flex}.clock-mode .chip.on{background:var(--accent);border-color:var(--accent)}.calendar{flex-direction:column;gap:8px;width:100%;display:flex}.cal-head{justify-content:space-between;align-items:center;display:flex}.cal-head b{font-size:18px}.cal-grid{grid-template-columns:repeat(7,1fr);gap:4px;display:grid}.cal-grid .dow{text-align:center;color:var(--muted);padding:2px 0;font-size:11px}.cal-grid .day{aspect-ratio:1;border:1px solid var(--line);background:var(--card);cursor:pointer;border-radius:10px;font-size:15px}.cal-grid .day.sel{background:var(--accent);color:#fff;border-color:var(--accent)}.cal-grid .day.correct{outline:2px solid var(--good)}.cal-grid .day.blank{background:0 0;border:none}.series{grid-template-columns:repeat(2,1fr);gap:6px 14px;display:grid}.series .row-s{border-bottom:1px dashed var(--line);justify-content:space-between;gap:8px;padding:4px 0;font-size:16px;display:flex}.series .row-s .k{color:var(--muted)}.series .row-s .blank{color:var(--accent);font-weight:700}.objects{letter-spacing:4px;text-align:center;font-size:34px;line-height:1.3}.meter{background:var(--line);border-radius:4px;width:160px;height:8px;overflow:hidden}.meter>i{background:var(--accent);transform-origin:0;width:100%;height:100%;transition:transform 80ms linear;display:block}.revise{border-left:4px solid #39c}.revise select{width:100%}.btn-secondary{color:#fff;background:#39c;border-color:#0000}.diff{flex-direction:column;gap:6px;display:flex}.diff-row{grid-template-columns:58px 1fr;align-items:baseline;gap:0 10px;display:grid}.diff-label{color:var(--muted);text-transform:uppercase;letter-spacing:.04em;font-size:12px}.diff-text{word-break:break-all;font-size:20px;font-weight:600;line-height:1.4}.diff mark{border-radius:4px;padding:0 2px}.diff mark.wrong{color:#7a1d0f;background:#f7b9ad;text-decoration:line-through;text-decoration-thickness:2px}.diff mark.fix{color:#5a4200;background:#ffe58a;font-weight:800}