.tanuki{display:block;overflow:visible}.tanuki-body{transform-origin:60px 136px;animation:3.2s ease-in-out infinite tanuki-sway}.tanuki-eyes{transform-origin:60px 76px;animation:4.5s infinite tanuki-blink}.tanuki-ruler{transform-origin:88px 104px;transition:transform .25s}.mood-point .tanuki-ruler{animation:.6s ease-in-out 3 tanuki-wave;transform:rotate(-35deg)}.mood-happy .tanuki-body{animation:.5s ease-out 2 tanuki-hop}.mood-encourage .tanuki-body{animation-duration:4.5s}@keyframes tanuki-sway{0%,to{transform:rotate(-2.5deg)}50%{transform:rotate(2.5deg)}}@keyframes tanuki-blink{0%,92%,to{transform:scaleY(1)}95%{transform:scaleY(.1)}}@keyframes tanuki-wave{0%,to{transform:rotate(-35deg)}50%{transform:rotate(-15deg)}}@keyframes tanuki-hop{0%,to{transform:translateY(0)}40%{transform:translateY(-8px)}}@media (prefers-reduced-motion:reduce){.tanuki-body,.tanuki-eyes,.tanuki-ruler{animation:none!important}}.explain{gap:var(--s4);padding:var(--s4);border-radius:var(--r-lg);background:var(--surface);border:1px solid var(--line);border-top:4px solid var(--bad);box-shadow:var(--shadow-2);flex-direction:column;scroll-margin:72px;display:flex}.explain-head{align-items:flex-end;gap:var(--s2);display:flex}.bubble{padding:var(--s3) var(--s4);border-radius:var(--r-md);background:var(--surface-2);color:var(--ink);flex:1;font-size:1rem;line-height:1.55;position:relative}.bubble:before{content:"";border:9px solid #0000;border-right-color:var(--surface-2);border-left:0;position:absolute;bottom:18px;left:-9px}.bubble p{margin:0 0 var(--s2)}.bubble p:last-child{margin-bottom:0}.parts{gap:var(--s2);flex-wrap:wrap;display:flex}.part-btn{border-radius:var(--r-sm);border:1.5px solid var(--hat);background:var(--hat-tint);min-width:44px;min-height:44px;color:var(--hat);font-family:var(--font-ja);cursor:pointer;padding:6px 14px;font-size:1.2rem;font-weight:700}.part-btn[aria-pressed=true]{background:var(--hat);color:#fff}.example{padding:var(--s3) var(--s4);border-left:4px solid var(--gold);border-radius:var(--r-sm);background:#fff8ea}.example .ja{font-family:var(--font-ja);margin:0 0 var(--s1);font-size:1.1rem}.example .vi{color:var(--ink-2);margin:0}.explain .btn.big{max-width:none}.coach{--coach-in:.26s}.coach-card{min-width:0}.coach .explain .bubble:before{display:none}.coach-side{max-height:100%;animation:coach-in var(--coach-in) cubic-bezier(.2, .8, .2, 1) both;display:flex;position:absolute;left:0;right:0}.coach-side .coach-tanuki{justify-content:center;width:88px;display:flex;position:absolute;left:0;transform:scaleX(-1)}.coach-side .coach-card{overscroll-behavior:contain;border-radius:var(--r-lg);flex:1;max-height:100%;margin-left:92px;overflow-y:auto}.coach-below{align-items:flex-start;gap:var(--s2);animation:coach-in var(--coach-in) cubic-bezier(.2, .8, .2, 1) both;display:flex}.coach-below .coach-card{flex:1}.coach-sheet .coach-card{animation:coach-in var(--coach-in) cubic-bezier(.2, .8, .2, 1) both}.coach-peek{z-index:1;pointer-events:none;animation:.3s cubic-bezier(.2,.8,.2,1) both peek-in;position:absolute;top:-78px;left:18px}.coach-side.is-leaving,.coach-below.is-leaving,.coach-sheet.is-leaving .coach-card{animation:.22s ease-in forwards coach-out}.coach-sheet.is-leaving .coach-peek{animation:.22s ease-in forwards peek-out}.coach[data-motion=off],.coach[data-motion=off] *{animation:none!important}@keyframes coach-in{0%{opacity:0;transform:translate(calc(100% + 64px))}to{opacity:1;transform:none}}@keyframes coach-out{to{opacity:0;transform:translate(calc(100% + 64px))}}@keyframes peek-in{0%{opacity:0;transform:translateY(78px)}to{opacity:1;transform:none}}@keyframes peek-out{to{opacity:0;transform:translateY(78px)}}.shell{--side-w:0px;--bnav-h:0px;min-height:100dvh}.shell.is-wide{--side-w:248px;grid-template-columns:var(--side-w) minmax(0, 1fr);transition:grid-template-columns .2s;display:grid}.shell.is-wide.is-collapsed{--side-w:84px}.shell.is-rail{--side-w:84px;grid-template-columns:var(--side-w) minmax(0, 1fr);display:grid}.shell.is-phone{--bnav-h:64px;padding-bottom:calc(var(--bnav-h) + env(safe-area-inset-bottom))}.shell-main{min-width:0}.side{overscroll-behavior:contain;gap:var(--s4);height:100dvh;padding:var(--s4) var(--s3);background:var(--surface);border-right:1px solid var(--line);flex-direction:column;display:flex;position:sticky;top:0;overflow-y:auto}.side-hello{align-items:center;gap:var(--s3);padding:0 var(--s2);display:flex}.side-hello p{margin:0;line-height:1.35}.side-greet{color:var(--ink);font-weight:700}.side-nav{flex-direction:column;gap:2px;margin:0;padding:0;list-style:none;display:flex}.side-link{align-items:center;gap:var(--s3);min-height:44px;padding:var(--s2) var(--s3);border-radius:var(--r-sm);color:var(--ink-2);font-weight:600;text-decoration:none;transition:background-color .12s,color .12s;display:flex}.side-link:hover{background:var(--surface-2);color:var(--ink)}.side-link.active{background:var(--brand-tint);color:var(--brand-strong)}.side-card{gap:var(--s2);padding:var(--s3) var(--s4);border-radius:var(--r-md);background:var(--bg);border:1px solid var(--line);flex-direction:column;display:flex}.side-card h2{letter-spacing:.05em;text-transform:uppercase;color:var(--brand-strong);margin:0;font-size:.78rem;font-weight:700}.side-big{color:var(--ink-2);margin:0}.side-big strong{color:var(--ink);font-variant-numeric:tabular-nums;margin-right:4px;font-size:1.5rem}.meter{background:var(--surface-2);border-radius:999px;height:8px;overflow:hidden}.meter>div{background:linear-gradient(90deg, var(--brand), var(--gold));border-radius:999px;height:100%;transition:width .3s}.side-stats{color:var(--ink-2);flex-direction:column;gap:6px;margin:0;padding:0;font-size:.92rem;list-style:none;display:flex}.side-stats li{align-items:center;gap:6px;display:flex}.side-stats svg{color:var(--gold)}.side-stats strong{color:var(--ink);font-variant-numeric:tabular-nums}.side-queue{margin:0 calc(-1 * var(--s2));flex-direction:column;gap:2px;padding:0;list-style:none;display:flex}.side-queue a{min-height:44px;padding:var(--s2);border-radius:var(--r-sm);color:var(--ink);flex-direction:column;gap:2px;text-decoration:none;display:flex}.side-queue a:hover{background:var(--surface-2)}.q-title{font-family:var(--font-ja);-webkit-line-clamp:2;-webkit-box-orient:vertical;font-size:.95rem;line-height:1.45;display:-webkit-box;overflow:hidden}.q-meta{color:var(--muted);align-items:center;gap:4px;font-size:.8rem;display:inline-flex}.side-queue a.done .q-title{color:var(--muted)}.side-queue a.done .q-meta svg{color:var(--ok)}.side-more{gap:var(--s2);flex-direction:column;display:flex}.side-more-btn{width:100%}.side-more-opts{gap:var(--s2);grid-template-columns:1fr 1fr;display:grid}.side-more p{margin:0}.side-logout{align-items:center;gap:var(--s3);min-height:44px;padding:var(--s2) var(--s3);border-radius:var(--r-sm);color:var(--muted);font:inherit;cursor:pointer;background:0 0;border:0;margin-top:auto;font-weight:600;display:flex}.side-logout:hover{background:var(--surface-2);color:var(--ink)}.side-settings{text-decoration:none}.side-settings+.side-logout{margin-top:0}.side-settings.active{background:var(--surface-2);color:var(--ink)}.side-toggle{border:1px solid var(--line);border-radius:var(--r-sm);background:var(--surface);width:44px;height:44px;color:var(--ink-2);cursor:pointer;justify-content:center;align-self:flex-end;align-items:center;display:inline-flex}.side-toggle:hover{background:var(--surface-2);color:var(--ink)}.side.rail .side-toggle{align-self:center}.side.rail{overflow:visible}.side.rail [data-tip]{position:relative}.side.rail [data-tip]:hover:after,.side.rail [data-tip]:focus-visible:after{content:attr(data-tip);z-index:60;border-radius:var(--r-sm);background:var(--ink);color:#fff;white-space:nowrap;pointer-events:none;box-shadow:var(--shadow-1);padding:6px 10px;font-size:.85rem;font-weight:600;animation:.12s ease-out tip-in;position:absolute;top:50%;left:calc(100% + 10px);transform:translateY(-50%)}@keyframes tip-in{0%{opacity:0}to{opacity:1}}.side:not(.rail) .side-hello,.side:not(.rail) .side-card,.side:not(.rail) .side-more{animation:.2s ease-out side-fade}@keyframes side-fade{0%{opacity:0}to{opacity:1}}.side.rail{padding:var(--s3) var(--s2);align-items:stretch}.side.rail .side-hello{justify-content:center;padding:0}.side.rail .side-link{padding:var(--s2) 0;text-align:center;flex-direction:column;gap:2px;font-size:.72rem}.side.rail .side-logout{justify-content:center}.bnav{z-index:50;min-height:var(--bnav-h);padding-bottom:env(safe-area-inset-bottom);background:var(--surface);border-top:1px solid var(--line);grid-template-columns:repeat(5,1fr);display:grid;position:fixed;bottom:0;left:0;right:0;box-shadow:0 -4px 16px #2b211c0f}.bnav-link{min-height:56px;color:var(--muted);flex-direction:column;justify-content:center;align-items:center;gap:2px;font-size:.72rem;font-weight:600;text-decoration:none;display:flex;position:relative}.bnav-link.active{color:var(--brand-strong)}.bnav-link.active:before{content:"";background:var(--brand);border-radius:0 0 3px 3px;height:3px;position:absolute;top:0;left:25%;right:25%}.today-strip{gap:var(--s2);flex-wrap:wrap;justify-content:center;margin:0;padding:0;list-style:none;display:flex}.today-strip li{background:var(--surface);border:1px solid var(--line);color:var(--ink-2);border-radius:999px;align-items:center;gap:4px;padding:4px 10px;font-size:.82rem;display:inline-flex}.today-strip svg{color:var(--gold)}.today-strip strong{color:var(--ink);font-variant-numeric:tabular-nums}.screen-head{z-index:30;gap:var(--s2);padding:var(--s3) var(--s5);background:color-mix(in srgb, var(--bg) 94%, transparent);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-bottom:1px solid var(--line);flex-direction:column;transition:padding .15s;display:flex;position:sticky;top:0}.sh-row{align-items:center;gap:var(--s3);min-height:44px;display:flex}.sh-back{min-width:44px;min-height:44px;padding:0 var(--s3) 0 var(--s2);border-radius:var(--r-sm);color:var(--hat);font:inherit;cursor:pointer;background:0 0;border:0;flex-shrink:0;align-items:center;gap:4px;font-weight:600;text-decoration:none;display:inline-flex}.sh-back:hover{background:var(--hat-tint)}.sh-titles{flex:1;min-width:0}.sh-title{white-space:nowrap;text-overflow:ellipsis;margin:0;font-size:1.2rem;line-height:1.35;transition:font-size .15s;overflow:hidden}.sh-title[lang=ja]{font-family:var(--font-ja)}.sh-sub{color:var(--muted);white-space:nowrap;text-overflow:ellipsis;margin:0;font-size:.85rem;overflow:hidden}.sh-actions{align-items:center;gap:var(--s2);flex-shrink:0;display:flex}.sh-progress{background:var(--surface-2);height:4px;position:absolute;bottom:-1px;left:0;right:0}.sh-progress>div{background:linear-gradient(90deg, var(--brand), var(--gold));height:100%;transition:width .3s}.screen-head.is-collapsed{padding-top:var(--s2);padding-bottom:var(--s2)}.screen-head.is-collapsed .sh-sub,.screen-head.is-collapsed .sh-extra{display:none}.screen-head.is-collapsed .sh-title{font-size:1.05rem}@media (width<=639px){.screen-head{padding:var(--s2) var(--s3)}.sh-title{font-size:1.1rem}.sh-back span{clip:rect(0 0 0 0);white-space:nowrap;width:1px;height:1px;position:absolute;overflow:hidden}.sh-back{justify-content:center;padding:0}}.fit-screen{flex-direction:column;height:100dvh;display:flex;overflow:hidden}.fit-screen>.screen-head{flex-shrink:0;position:relative}.fit-screen>main.page{min-height:0;padding-top:var(--s4);padding-bottom:var(--s4);flex-direction:column;flex:1;display:flex}.split-questions{overscroll-behavior:contain;scrollbar-width:thin;scrollbar-color:#c9b8a3 transparent;overflow-y:auto;container-type:size}.split-questions .quiz,.split-questions .question,.split-questions .qa-main{gap:clamp(6px,1.5cqh,12px)}.split-questions .reason{font-size:clamp(14px,2cqh,.92rem)}.split-questions .prompt{padding:clamp(8px,2.4cqh,24px) clamp(12px,2cqh,16px)}.split-questions .prompt-ja{font-size:clamp(2.4rem,15cqh,6rem)}.split-questions .prompt-ja.prompt-long{font-size:clamp(15px,3.2cqh,1.9rem);line-height:1.55}.split-questions .quiz:has(.coach) .prompt{padding-block:clamp(6px,1.2cqh,12px)}.split-questions .quiz:has(.coach) .prompt-ja.prompt-long{font-size:clamp(15px,2.5cqh,1.6rem);line-height:1.45}.split-questions .quiz:has(.coach) .choice{min-height:44px}.split-questions .prompt-vi{font-size:clamp(15px,3.2cqh,1.5rem)}.split-questions .timer-slot{min-height:clamp(16px,2.6cqh,28px)}.split-questions .choices{gap:clamp(6px,1.4cqh,12px)}.split-questions .choice{min-height:clamp(44px,9cqh,72px);padding:clamp(4px,1.2cqh,12px) clamp(10px,1.6cqh,16px);font-size:clamp(15px,2.4cqh,1.05rem)}.split-questions .choice-tag{font-size:clamp(12px,1.6cqh,.75rem)}.split-questions .gloss{font-size:clamp(14px,1.9cqh,.85rem)}.split-questions .lesson-tanuki .tanuki{width:auto;height:clamp(0px,11cqh,84px)}.split-questions .explain{gap:clamp(6px,1.5cqh,16px);padding:clamp(8px,1.8cqh,16px)}.split-questions .bubble{padding:clamp(6px,1.2cqh,12px) clamp(10px,1.6cqh,16px);font-size:clamp(14px,2.1cqh,1rem)}.split-questions .example{padding:clamp(6px,1.2cqh,12px) clamp(10px,1.6cqh,16px)}.split-questions .example .ja{font-size:clamp(15px,2.3cqh,1.1rem)}.split-questions .example .vi{font-size:clamp(14px,2cqh,1rem)}.split-questions .part-btn{font-size:clamp(15px,2.4cqh,1.2rem)}.split-questions .explain .btn.big{min-height:clamp(44px,7cqh,56px);font-size:clamp(15px,2.3cqh,1.1rem)}.split-questions .coach-tanuki .tanuki{width:auto;height:clamp(44px,10cqh,94px)}.split-questions .start{gap:clamp(8px,2cqh,16px);padding:clamp(12px,3cqh,32px)}.bsheet{left:var(--side-w,0px);right:0;bottom:calc(var(--bnav-h,0px) + env(safe-area-inset-bottom));z-index:45;height:52dvh;max-height:calc(100dvh - var(--bnav-h,0px) - 24px);background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg) var(--r-lg) 0 0;border-bottom:0;outline:none;flex-direction:column;max-width:720px;margin:0 auto;transition:height .2s;animation:.22s ease-out sheet-up;display:flex;position:fixed;box-shadow:0 -8px 32px #2b211c2e}.bsheet.is-full{height:92dvh}.bsheet[hidden]{display:none}.bsheet-top{flex-shrink:0;align-items:center;min-height:44px;display:flex;position:relative}.bsheet-handle{cursor:grab;touch-action:none;background:0 0;border:0;flex:1;justify-content:center;align-self:stretch;align-items:center;min-height:44px;display:flex}.bsheet-grip{background:#cdbca8;border-radius:99px;width:44px;height:5px}.bsheet-close{border-radius:var(--r-sm);width:44px;height:44px;color:var(--ink-2);cursor:pointer;background:0 0;border:0;justify-content:center;align-items:center;display:flex;position:absolute;top:0;right:6px}.bsheet-close:hover{background:var(--surface-2)}.bsheet .timer-slot:empty{display:none}.bsheet .prompt{padding:var(--s3) var(--s4)}.bsheet .choice{scroll-margin-top:var(--s2)}.bsheet-body{overscroll-behavior:contain;min-height:0;padding:0 var(--s4) var(--s4);flex:1;overflow-y:auto}@keyframes sheet-up{0%{opacity:0;transform:translateY(48px)}to{opacity:1;transform:none}}.q-bubble{right:16px;bottom:calc(var(--bnav-h,0px) + env(safe-area-inset-bottom) + 16px);z-index:46;background:var(--brand);color:#fff;width:60px;height:60px;box-shadow:var(--shadow-2);cursor:pointer;border:0;border-radius:50%;justify-content:center;align-items:center;transition:bottom .2s,background-color .15s;display:flex;position:fixed}.q-bubble:hover{background:var(--brand-strong)}.q-bubble.is-open{bottom:calc(var(--bnav-h,0px) + env(safe-area-inset-bottom) + var(--sheet-h,52dvh) + 10px);background:var(--surface);width:48px;height:48px;color:var(--brand-strong);border:1px solid var(--line)}.q-badge{border:2px solid var(--surface);background:var(--gold);min-width:28px;height:22px;color:var(--ink);font-variant-numeric:tabular-nums;border-radius:99px;justify-content:center;align-items:center;padding:0 6px;font-size:.75rem;font-weight:800;display:flex;position:absolute;top:-6px;right:-6px}.q-bubble.is-open .q-badge{display:none}.q-bubble.nudge{animation:1.1s ease-in-out 3 nudge}@keyframes nudge{0%,to{transform:none}18%{transform:translateY(-10px)scale(1.05)}36%{transform:none}52%{transform:translateY(-5px)}68%{transform:none}}.dash{gap:var(--s4);padding-top:var(--s5);flex-direction:column;display:flex}@media (width>=760px){.page.dash{grid-template-columns:1fr 1fr;align-items:start;max-width:1000px;display:grid}.dash>.btn{grid-column:1/-1}}.card h2{margin:0 0 var(--s2);color:var(--brand-strong);text-transform:none;font-size:1rem;font-weight:700}.card p{margin:var(--s2) 0;line-height:1.55}.big-num{color:var(--brand);font-variant-numeric:tabular-nums;margin:0;font-size:2.6rem;font-weight:800;line-height:1.1}.bar{background:var(--surface-2);border-radius:999px;flex:1;height:10px;overflow:hidden}.bar>div{background:var(--hat);border-radius:999px;height:100%}.topics{margin:var(--s2) 0;gap:var(--s3);padding:0;list-style:none;display:grid}.topics li{align-items:center;gap:var(--s3);grid-template-columns:7em 1fr auto;font-size:.95rem;display:grid}.reasons{margin:var(--s2) 0 0;padding-left:1.2em;line-height:1.55}.dash>.btn{justify-self:center}.card-head{align-items:center;gap:var(--s3);display:flex}.card-head h2{margin:0}.dash>.dash-logout{justify-self:stretch;max-width:none}.lesson{gap:var(--s4);flex-direction:column;min-height:100dvh;display:flex}@media (width>=1080px){.page.lesson{max-width:1080px}}@media (width>=1024px){.shell.is-collapsed .page.lesson{max-width:1160px}}.page.lesson{padding-top:var(--s5)}.lesson-head{z-index:10;align-items:center;gap:var(--s2);margin:calc(-1 * var(--s4)) calc(-1 * var(--s4)) 0;padding:var(--s2) var(--s4);background:color-mix(in srgb, var(--bg) 92%, transparent);-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);border-bottom:1px solid var(--line);display:flex;position:sticky;top:0}.progress{background:var(--surface-2);border-radius:999px;flex:1;height:10px;overflow:hidden}.progress>div{background:linear-gradient(90deg, var(--brand), var(--gold));border-radius:999px;height:100%;transition:width .3s}.start{text-align:center;align-items:center;gap:var(--s4);padding:var(--s6) var(--s5);background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);width:100%;max-width:560px;box-shadow:var(--shadow-1);flex-direction:column;margin:0 auto;display:flex}.start h1,.start h2{margin:0}.summary{color:var(--ink-2);max-width:44ch;margin:0;font-size:1.05rem;line-height:1.6}.start-hello{align-items:center;gap:var(--s4);text-align:left;display:flex}@media (width<=479px){.start-hello{text-align:center;flex-direction:column}}.block-list{gap:var(--s2);text-align:left;flex-direction:column;width:100%;margin:0;padding:0;list-style:none;display:flex}.block-list li{gap:2px var(--s3);padding:var(--s3) var(--s4);border-radius:var(--r-md);background:var(--bg);border:1px solid var(--line);border-left:4px solid var(--brand);grid-template-columns:1fr auto;display:grid}.block-list li.done{border-left-color:var(--ok)}.bl-name{color:var(--ink);font-weight:700}.bl-count{color:var(--brand-strong);font-variant-numeric:tabular-nums;font-weight:700}.block-list li.done .bl-count{color:var(--ok)}.bl-reason{color:var(--ink-2);grid-column:1/-1;font-size:.9rem}.sh-count{color:var(--ink-2);font-variant-numeric:tabular-nums;font-weight:700}.after-actions{align-items:center;gap:var(--s3);flex-direction:column;width:100%;display:flex}.after-actions p{text-align:center;margin:0}.read-listen{gap:var(--s3);grid-template-columns:1fr 1fr;width:100%;max-width:420px;display:grid}.reason{text-align:center;margin:0}.lesson-tanuki{justify-content:center;display:flex}.qa{gap:var(--s4);grid-template-columns:minmax(0,1fr);align-items:start;width:100%;max-width:640px;margin:0 auto;display:grid}.qa-main{gap:var(--s3);flex-direction:column;min-width:0;display:flex}.qa-side{min-width:0}@media (width>=1080px){.qa.has-side{gap:var(--s6);grid-template-columns:minmax(0,1fr) minmax(320px,400px);max-width:none}.qa.has-side .qa-side{position:sticky;top:88px}}.thinking{align-items:center;gap:var(--s3);padding:var(--s4);border-radius:var(--r-lg);background:var(--surface);border:1px dashed var(--line);color:var(--muted);display:flex}.question{gap:var(--s3);flex-direction:column;display:flex}.prompt{text-align:center;padding:var(--s5) var(--s4);border-radius:var(--r-lg);background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow-1)}.prompt-ja{font-family:var(--font-ja);color:var(--ink);font-size:clamp(3.5rem,18vw,6rem);line-height:1.1}.prompt-ja.prompt-long{text-align:left;font-size:clamp(1.35rem,5.5vw,1.9rem);line-height:1.6}.prompt-vi{font-size:1.5rem;font-weight:700}.prompt:empty{display:none}.timer-slot{justify-content:center;min-height:28px;display:flex}.timer{align-items:center;gap:var(--s2);color:#7a5a17;font-size:.95rem;display:inline-flex}.timer-ring{border:3px solid var(--gold);border-top-color:#0000;border-radius:50%;width:18px;height:18px;animation:1s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.choices{gap:var(--s3);grid-template-columns:1fr 1fr;display:grid}.choice{min-height:72px;padding:var(--s3) var(--s4);text-align:left;color:var(--ink);overflow-wrap:anywhere;flex-direction:column;justify-content:center;align-items:flex-start;gap:2px;font-size:1.05rem;font-weight:600;line-height:1.35}.choice:disabled{opacity:1;cursor:default}.choice-text{display:block}.choice-tag{border-radius:999px;margin-top:2px;padding:1px 8px;font-size:.75rem;font-weight:700;display:inline-block}.choice.ok .choice-tag{background:var(--ok);color:#fff}.choice.bad .choice-tag{background:var(--bad);color:#fff}.gloss{color:var(--ink-2);margin-top:2px;font-size:.85rem;font-weight:500;display:block}.gloss[lang=ja]{font-family:var(--font-ja)}@media (width<=380px){.choices{grid-template-columns:1fr}}.hw{align-items:center;gap:var(--s3);flex-direction:column;display:flex}.hw-char{font-size:2.2rem;font-family:var(--font-ja);margin:0}.hw-pad{aspect-ratio:1;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);width:min(88vw,360px);box-shadow:var(--shadow-1);cursor:crosshair;-webkit-user-select:none;user-select:none;touch-action:none}.hw-guide{stroke:#e8dccb;stroke-width:.6px;stroke-dasharray:2 2}.hw-done,.hw-hint,.hw-ink{fill:none;stroke-linecap:round;stroke-linejoin:round}.hw-done{stroke:var(--ink);stroke-width:4px}.hw-ink{stroke:var(--hat);stroke-width:4px}.hw-hint{stroke:var(--gold);stroke-width:5px;opacity:.85;animation:.9s ease-in-out 3 hw-flash}@keyframes hw-flash{0%,to{opacity:.85}50%{opacity:.2}}.hw-msg{text-align:center;min-height:3em;color:var(--ink-2);margin:0}@media (width>=1024px){.shell.is-collapsed .qa.has-side{gap:var(--s6);grid-template-columns:minmax(0,1fr) minmax(320px,420px);max-width:none}.shell.is-collapsed .qa.has-side .qa-side{position:sticky;top:88px}}.read-listen .btn{padding-inline:var(--s3)}.fit-screen .page.lesson{gap:0;max-width:none;min-height:0}.qa-split{flex:1;grid-template-columns:minmax(0,640px) 0;justify-content:center;align-items:stretch;gap:0;width:100%;max-width:none;min-height:0;margin:0;transition:grid-template-columns .24s,gap .24s;display:grid}.qa-split.has-coach{gap:var(--s6);grid-template-columns:minmax(0,640px) minmax(300px,440px)}.qa-split .qa-main{flex-direction:column;justify-content:center;height:100%;min-height:0;display:flex}.coach-col{min-height:0;position:relative}.choice.ok{animation:.32s ease-out choice-pop}@keyframes choice-pop{50%{transform:scale(1.04)}}.demo .prompt:empty{display:none}.listen-q{text-align:center;margin:0;font-weight:600}.listen-fallback{text-align:center;background:#fffaf0;border-radius:12px;margin:0;padding:10px}.demo .btn.big{align-self:center}.link-btn{justify-content:center;align-items:center;text-decoration:none;display:inline-flex}.about{border:2px solid var(--belly);background:#fff;border-radius:20px;margin-top:32px;padding:16px;line-height:1.55}.about h2{margin-top:0}.about li{margin-bottom:6px}.voice-settings{gap:var(--s2);max-width:420px;display:grid}.voice-settings .vs-row{color:var(--ink-2);justify-content:space-between;align-items:baseline;font-weight:600;display:flex}.voice-settings .vs-row output{font-variant-numeric:tabular-nums;color:var(--ink)}.voice-settings select{min-height:44px;padding:0 var(--s3);border:1px solid var(--line);border-radius:var(--r-sm);background:var(--surface);color:var(--ink);font:inherit}.voice-settings input[type=range]{width:100%;min-height:44px;accent-color:var(--brand)}.voice-settings>.btn{margin-top:var(--s1);justify-self:start}.voice-panel{margin-bottom:var(--s4);padding:var(--s4);border:1px solid var(--line);border-radius:var(--r-lg);background:var(--surface)}.voice-hint{align-items:center;gap:var(--s2) var(--s3);margin:var(--s2) 0 0;padding:var(--s3) var(--s4);border-radius:var(--r-md,12px);background:var(--surface-2);color:var(--ink-2);flex-wrap:wrap;font-size:.92rem;display:flex}.voice-hint .link-btn-plain{min-height:44px;padding:0 var(--s2);cursor:pointer;font:inherit;color:var(--brand-strong);background:0 0;border:0;font-weight:600}.page.reader{gap:var(--s4);flex-direction:column;max-width:720px;padding-bottom:45vh;display:flex}.reader-head{justify-content:space-between;align-items:center;display:flex}.reader-body{width:100%;max-width:40rem;font-family:var(--font-ja);color:var(--ink);-webkit-user-select:text;user-select:text;margin:0 auto;font-size:1.2rem;line-height:2.1}.article-meta{align-items:center;gap:var(--s2);margin:0 0 var(--s2);color:var(--muted);flex-wrap:wrap;font-family:system-ui,sans-serif;font-size:.9rem;line-height:1.4;display:flex}.level-chip{background:var(--brand-tint);color:var(--brand-strong);border-radius:999px;padding:2px 10px;font-size:.8rem;font-weight:700}.reader-body h1{margin:0 0 var(--s4);font-size:1.55rem;line-height:1.9}.reader-body p{margin:0 0 1.1em}.article-block{display:contents}.reader-body rt{color:var(--muted);-webkit-user-select:none;user-select:none;font-size:.5em}.reader-body [data-i]{cursor:pointer;border-radius:4px}.reader-body [data-i]:active{background:var(--brand-tint)}.article-img{margin:var(--s2) 0 var(--s5);border-radius:var(--r-md);background:var(--surface-2);width:100%;overflow:hidden}.article-img.hero{border-radius:var(--r-lg);margin-top:0}.article-img img{object-fit:cover;width:100%;height:100%;display:block}.reader-actions{gap:var(--s3);flex-wrap:wrap;justify-content:center;align-items:center;display:flex}@media (width>=1100px){.page.reader,.page.listen{max-width:1160px}}.page.reader,.page.listen{padding-top:var(--s5)}.tanuki-panel{gap:var(--s3);padding:var(--s4);background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--shadow-2);flex-direction:column;display:flex}.tp-head{align-items:center;gap:var(--s3);display:flex}.tp-word{flex:1;min-width:0}.tp-text{font-family:var(--font-ja);overflow-wrap:anywhere;margin:0;font-size:1.5rem;font-weight:700;line-height:1.3}.tp-reading{font-family:var(--font-ja);color:var(--muted);margin:0}.tp-close{min-width:64px;padding:var(--s2) var(--s3)}.tp-base{margin:0;font-size:1.05rem}.tp-context{border-top:1px solid var(--line);padding-top:var(--s3);gap:var(--s2);flex-direction:column;display:flex}.tp-context h3{color:var(--brand-strong);text-transform:uppercase;letter-spacing:.04em;margin:0;font-size:.85rem;font-weight:700}.tp-context p{margin:0}.tp-sentence{font-family:var(--font-ja);padding:var(--s2) var(--s3);background:var(--surface-2);border-radius:var(--r-sm);line-height:1.7}.tp-meaning{color:var(--ink);font-size:1.1rem;font-weight:700}.tp-why{color:var(--ink-2);line-height:1.6}.tp-examples{gap:var(--s2);flex-direction:column;margin:0;padding:0;list-style:none;display:flex}.tp-examples li{padding:var(--s2) var(--s3);border-left:4px solid var(--gold);border-radius:var(--r-sm);background:#fff8ea;flex-direction:column;display:flex}.tp-examples li [lang=ja]{font-family:var(--font-ja);font-size:1.05rem}.tp-examples .vi{color:var(--ink-2);font-size:.95rem}.tp-thinking{align-items:center;gap:var(--s2);color:var(--muted);display:flex}.dots{gap:4px;display:inline-flex}.dots i{background:var(--brand);border-radius:50%;width:7px;height:7px;animation:1s ease-in-out infinite dot}.dots i:nth-child(2){animation-delay:.15s}.dots i:nth-child(3){animation-delay:.3s}@keyframes dot{0%,to{opacity:.25;transform:translateY(0)}50%{opacity:1;transform:translateY(-3px)}}.tp-saved{margin:0}.page.listen{gap:var(--s4);flex-direction:column;padding-bottom:55vh;display:flex}.page.reader{padding-bottom:55vh}.player-row{align-items:center;gap:var(--s2);flex-wrap:wrap;display:flex}.player-pos{color:var(--ink-2);font-variant-numeric:tabular-nums;margin-left:auto;font-weight:600}.btn.icon{border-radius:50%;width:48px;height:48px;padding:0}.btn.icon.play{width:56px;height:56px}.btn.small{min-height:44px;padding:var(--s2) var(--s3);font-size:.95rem}.rates{gap:var(--s2);display:flex}.rates .btn[aria-pressed=true]{background:var(--brand);border-color:var(--brand);color:#fff}.listen-title{align-items:center;gap:var(--s3);display:flex}.listen-title h1{font-family:var(--font-ja);margin:0;font-size:1.35rem;line-height:1.5}.listen-text p{padding:0 var(--s2);border-radius:var(--r-sm);margin:0 0 .6em}.listen-text p.now{background:#fff3d6}.link-btn-plain{cursor:pointer;font:inherit;background:0 0;border:0;font-weight:600}.quiz{gap:var(--s2);flex-direction:column;display:flex}@media (width<=639px){.sh-listen{width:44px;min-height:44px;padding:0}.sh-listen span{clip:rect(0 0 0 0);white-space:nowrap;width:1px;height:1px;position:absolute;overflow:hidden}}.bsheet .tanuki-panel{box-shadow:none;background:0 0;border:0;padding:0}.split-page.page{max-width:1400px}.split{gap:var(--s5);flex:1;grid-template-columns:minmax(0,1fr) clamp(340px,36%,480px);min-height:0;display:grid}.split-scroll{overscroll-behavior:contain;min-height:0;padding:0 var(--s4) var(--s5) 0;scrollbar-width:thin;scrollbar-color:#c9b8a3 transparent;border-radius:var(--r-sm);overflow-y:auto}.split-scroll::-webkit-scrollbar{width:10px}.split-scroll::-webkit-scrollbar-thumb{border:2px solid var(--bg);background:#c9b8a3;border-radius:99px}.split-scroll .listen-title{margin-bottom:var(--s3)}.split-side{flex-direction:column;min-height:0;display:flex}.split-side>.tanuki-panel{overscroll-behavior:contain;max-height:100%;overflow-y:auto}.split-questions{flex:1;min-height:0}.page.admin{max-width:1100px}.admin-totals{gap:var(--s3);margin-bottom:var(--s5);grid-template-columns:repeat(auto-fit,minmax(150px,1fr));display:grid}.admin-totals>div{padding:var(--s4);border:1px solid var(--line);border-radius:var(--r-lg);background:var(--surface);flex-direction:column;gap:2px;display:flex}.admin-totals strong{font-variant-numeric:tabular-nums;font-size:1.6rem}.admin-totals span{color:var(--muted);font-size:.9rem}.admin-table-wrap{border:1px solid var(--line);border-radius:var(--r-lg);background:var(--surface);overflow-x:auto}.admin-table{border-collapse:collapse;width:100%;font-size:.95rem}.admin-table th,.admin-table td{padding:var(--s2) var(--s3);text-align:left;border-bottom:1px solid var(--line);white-space:nowrap}.admin-table thead th{color:var(--muted);font-size:.85rem;font-weight:600}.admin-table td{font-variant-numeric:tabular-nums}.admin-table tbody th{font-weight:600}.admin-table tfoot th,.admin-table tfoot td{border-bottom:0;font-weight:700}.admin-table tr.is-blocked{color:var(--muted)}.admin-tag{margin-left:var(--s2);background:var(--brand-tint);color:var(--brand-strong);border-radius:99px;padding:1px 8px;font-size:.75rem;font-weight:700}.admin-tag.bad{background:var(--bad-bg,#fbe9e7);color:var(--bad,#b3261e)}.sr-only{clip:rect(0 0 0 0);white-space:nowrap;width:1px;height:1px;position:absolute;overflow:hidden}:root{--bg:#faf6f0;--surface:#fff;--surface-2:#f4ece1;--line:#e6d9c8;--ink:#2b211c;--ink-2:#4f413a;--muted:#6b5c53;--brand:#8a5a36;--brand-strong:#6b4428;--brand-tint:#f3e6d8;--hat:#2b4c7e;--hat-tint:#e9eef7;--gold:#d99a26;--ok:#2e7d4f;--ok-bg:#e8f5ed;--bad:#b2432f;--bad-bg:#fcece8;--brown:var(--brand);--brown-dark:var(--brand-strong);--cream:var(--bg);--belly:var(--surface-2);--blue:var(--hat);--s1:4px;--s2:8px;--s3:12px;--s4:16px;--s5:24px;--s6:32px;--s7:48px;--r-sm:10px;--r-md:16px;--r-lg:22px;--shadow-1:0 1px 2px #2b211c0f, 0 4px 14px #2b211c0f;--shadow-2:0 2px 4px #2b211c14, 0 12px 32px #2b211c1f;--font-ja:"Noto Sans JP", "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic", "Meiryo", sans-serif;color:var(--ink);background:var(--bg);-webkit-tap-highlight-color:transparent;-webkit-text-size-adjust:100%;font-family:system-ui,-apple-system,Segoe UI,Roboto,Noto Sans,Noto Sans JP,sans-serif;font-size:16px;line-height:1.55}*{box-sizing:border-box}body{min-height:100dvh;margin:0}h1,h2,h3{color:var(--ink);text-wrap:balance;line-height:1.3}h1{margin:0 0 var(--s3);font-size:1.6rem}h2{margin:0 0 var(--s2);font-size:1.25rem}a{color:var(--hat);text-underline-offset:3px}:focus-visible{outline:3px solid var(--hat);outline-offset:2px}.page{width:100%;max-width:600px;padding:var(--s4) var(--s4) calc(var(--s6) + env(safe-area-inset-bottom));margin:0 auto}.center{text-align:center;justify-content:center;align-items:center;gap:var(--s3);flex-direction:column;min-height:80dvh;display:flex}.muted{color:var(--muted);font-size:.92rem}.btn{justify-content:center;align-items:center;gap:var(--s2);min-width:48px;min-height:48px;padding:var(--s3) var(--s5);border-radius:var(--r-md);border:1.5px solid var(--line);background:var(--surface);color:var(--brand-strong);font:inherit;cursor:pointer;touch-action:manipulation;font-size:1rem;font-weight:650;line-height:1.25;text-decoration:none;transition:background-color .12s,border-color .12s,box-shadow .12s;display:inline-flex;box-shadow:0 1px #2b211c0a}.btn:hover{border-color:var(--brand)}.btn:active{background:var(--brand-tint)}.btn:disabled{opacity:.5;cursor:default}.btn.primary{background:var(--brand);border-color:var(--brand);color:#fff;box-shadow:0 2px 0 var(--brand-strong)}.btn.primary:hover{background:var(--brand-strong)}.btn.primary:active{box-shadow:none}.btn.big{width:100%;max-width:420px;min-height:56px;font-size:1.1rem}.btn.ok{border-color:var(--ok);background:var(--ok-bg);color:var(--ink)}.btn.bad{border-color:var(--bad);background:var(--bad-bg);color:var(--ink)}.small-link{min-height:44px;padding:0 var(--s2);border-radius:var(--r-sm);color:var(--hat);align-items:center;font-size:.95rem;font-weight:600;text-decoration:none;display:inline-flex}.small-link:hover{background:var(--hat-tint)}.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:var(--s4);box-shadow:var(--shadow-1)}.credits li{margin-bottom:var(--s3);line-height:1.6}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}