:root{--ai:#4A6572;--ai-deep:#37505C;--ai-light:#5B7083;--ai-tint:rgba(74,101,114,.1);--washi:#F7F4EF;--washi-2:#EEE8DE;--card-bg:#FFFCF7;--sumi:#2B2D42;--hanko:#C1544B;--hanko-deep:#A43F38;--hanko-tint:rgba(193,84,75,.1);--furigana:#B23A2E;--success:#4C8B5F;--success-deep:#3B6E4A;--success-tint:rgba(76,139,95,.1);--gold:#B08A3E;--line:rgba(43,45,66,.1);--label-secondary:#63667A;--label-tertiary:#9393A0;--r-lg:22px;--r-md:16px;--r-sm:12px;--shadow-1:0 1px 3px rgba(43,45,66,.05),0 1px 2px rgba(43,45,66,.04);--shadow-2:0 4px 16px -4px rgba(43,45,66,.12),0 2px 6px -2px rgba(43,45,66,.07);--shadow-3:0 12px 32px -8px rgba(43,45,66,.2),0 4px 12px -4px rgba(43,45,66,.09);--ease-spring:cubic-bezier(.32,.72,0,1);--ease-out:cubic-bezier(.25,.1,.25,1);--fs-scale:1}body.fs-l{--fs-scale:1.18}body.fs-xl{--fs-scale:1.36}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}button{font-family:inherit;outline:none}button:focus-visible{outline:2px solid var(--ai);outline-offset:2px}.switch:focus-visible,.lvl:focus-visible,.babchip:focus-visible,.groupchip:focus-visible{outline:none}html,body{margin:0;padding:0;touch-action:pan-y;overscroll-behavior-x:none}body.swiping-lock,body.modal-scroll-lock{overflow:hidden;touch-action:none;overscroll-behavior:none}.modal-scroll-lock-html{overflow:hidden;touch-action:none;overscroll-behavior:none;height:100%}body{background:var(--washi);color:var(--sumi);font-family:-apple-system,BlinkMacSystemFont,SF Pro Text,Noto Sans JP,Helvetica Neue,sans-serif;min-height:100vh;padding:24px 16px 60px;-webkit-font-smoothing:antialiased}.wrap{max-width:520px;margin:0 auto}header{margin-bottom:20px;padding:0 4px;text-align:center}.header-photo{display:flex;justify-content:center;margin:0 auto 6px}.header-photo img{width:100%;max-width:220px;height:auto;display:block;filter:drop-shadow(0 6px 14px rgba(43,45,66,.14))}.header-photo-caption{display:none}.brand{display:flex;align-items:center;justify-content:center;gap:8px}.brand h1{font-family:"Noto Serif JP",serif;font-weight:700;font-size:20px;color:var(--sumi);margin:0;letter-spacing:.02em}.brand .en{font-size:10.5px;letter-spacing:.06em;color:var(--ai-deep);font-weight:700;background:var(--ai-tint);padding:4px 10px;border-radius:20px;text-transform:uppercase}.sub{font-size:14.5px;color:var(--ai-deep);margin-top:5px;letter-spacing:.01em;font-weight:700;font-family:Zen Maru Gothic,Noto Sans JP,sans-serif}.user-greeting{font-size:13px;color:var(--label-secondary);margin-top:4px;font-weight:600}.landak-perch-wrap{position:relative;display:flex;flex-direction:column;align-items:center}.landak-perch{width:26%;max-width:118px;min-width:74px;height:auto;margin-bottom:-10px;position:relative;z-index:0;pointer-events:none;user-select:none;transform:translateY(0);transition:transform .5s cubic-bezier(.34,1.56,.64,1);filter:drop-shadow(0 3px 6px rgba(43,45,66,.12))}.landak-perch-wrap .switchrow{position:relative;z-index:1}.landak-perch.is-hidden{transform:translateY(72%);transition:transform .25s cubic-bezier(.6,-.05,.85,.35)}.usagi-perch{position:absolute;left:16.6667%;bottom:calc(100% - 10px);transform:translate(-50%);width:26%;max-width:118px;min-width:74px;height:auto;z-index:-2;pointer-events:none;user-select:none;transition:transform .5s cubic-bezier(.34,1.56,.64,1);filter:drop-shadow(0 3px 6px rgba(43,45,66,.12))}.usagi-perch.is-hidden,.bunpou-perch.is-hidden{transform:translate(-50%,72%);transition:transform .25s cubic-bezier(.6,-.05,.85,.35)}.bunpou-perch{position:absolute;left:83.3333%;bottom:calc(100% - 10px);transform:translate(-50%);width:26%;max-width:118px;min-width:74px;height:auto;z-index:-2;pointer-events:none;user-select:none;transition:transform .5s cubic-bezier(.34,1.56,.64,1);filter:drop-shadow(0 3px 6px rgba(43,45,66,.12))}.switchrow:before{content:"";position:absolute;inset:0;background:var(--washi-2);border-radius:var(--r-sm);z-index:-1;pointer-events:none}.switchrow{display:flex;gap:2px;margin:0 0 12px;padding:3px;background:var(--washi-2);border-radius:var(--r-sm);position:relative;z-index:1}.switch{flex:1;text-align:center;padding:9px 6px;border:none;border-radius:9px;background:transparent;cursor:pointer;font-weight:600;font-size:14px;color:var(--label-secondary);position:relative;transition:all .25s var(--ease-out)}.switch.active{background:var(--card-bg);color:var(--sumi);box-shadow:var(--shadow-1)}.levelrow{display:flex;gap:2px;margin-bottom:14px;padding:3px;background:var(--washi-2);border-radius:var(--r-sm)}.lvl{flex:1;text-align:center;padding:7px 6px;border:none;border-radius:9px;background:transparent;cursor:pointer;font-size:13px;font-weight:600;letter-spacing:.01em;color:var(--label-secondary);transition:all .25s var(--ease-out)}.lvl.active{background:var(--card-bg);color:var(--hanko-deep);box-shadow:var(--shadow-1)}.quiz-cta{display:flex;align-items:center;justify-content:center;gap:8px;width:100%;padding:15px 16px;margin-bottom:16px;border-radius:var(--r-md);border:none;cursor:pointer;background:var(--ai);color:#fff;font-size:16px;font-weight:700;letter-spacing:.01em;box-shadow:0 6px 16px -4px #4a657273;transition:transform .15s var(--ease-spring),box-shadow .15s ease,background .15s ease}.quiz-cta:hover{background:var(--ai-deep)}.quiz-cta:active{transform:scale(.97);box-shadow:0 3px 10px -3px #4a657266}.babsection{margin-bottom:16px;border:none;border-radius:var(--r-md);padding:14px 14px 12px;background:var(--card-bg);box-shadow:var(--shadow-1)}.bear-peek-wrap{display:flex;flex-direction:column;align-items:center}.bear-peek-wrap .babsection{width:100%;position:relative;z-index:1;margin-top:0}.bear-peek{width:34%;max-width:170px;min-width:104px;height:auto;margin-bottom:-6px;position:relative;z-index:2;pointer-events:none;user-select:none}.bear-peek.theme-peek{width:calc(clamp(65px,19.5vw,101px) * var(--peek-ar, .77) * var(--peek-scale, 1));max-width:none;min-width:0;z-index:0;margin-bottom:var(--peek-mb,0px)}.babsection-title{font-size:12px;font-weight:600;letter-spacing:.01em;color:var(--label-secondary);margin-bottom:10px;display:flex;justify-content:space-between;align-items:center}.babsection-title .resetall{color:var(--ai);text-decoration:none;cursor:pointer;font-weight:600;font-size:12.5px}.babfilter-label{display:inline-flex;align-items:center;gap:6px;background:var(--ai-tint);color:var(--ai-deep);font-weight:700;padding:5px 12px;border-radius:20px;font-size:12px;letter-spacing:.02em;user-select:none;border:none;cursor:pointer;font-family:inherit}.babfilter-label .chevron{font-size:15px;font-weight:900;line-height:1;transition:transform .2s ease;display:inline-block}.babsection:not(.collapsed) .babfilter-label .chevron{transform:rotate(180deg)}.babsection.collapsed .babgroups,.babsection.collapsed #noBabMsg{display:none}.babsection.collapsed{padding-bottom:14px}.babfilter-label .dot{width:6px;height:6px;border-radius:50%;background:var(--ai);flex:none}.babchips{display:none!important}.babchip{padding:6px 13px;border-radius:20px;border:none;font-size:13px;font-weight:500;cursor:pointer;background:var(--washi);color:var(--label-secondary);user-select:none;transition:all .15s ease}.babchip.on{background:var(--ai);color:#fff;font-weight:700}.babgroups{display:grid;grid-template-columns:repeat(2,1fr);gap:8px;margin-bottom:10px}.groupchip{padding:9px 13px;border-radius:12px;border:none;font-size:13px;font-weight:600;text-align:center;cursor:pointer;background:var(--ai-tint);color:var(--ai-deep);transition:all .15s ease}.groupchip:hover{background:#4a65722e}.groupchip.on{background:var(--ai);color:#fff;font-weight:700}.groupchip.partial{background:linear-gradient(to right,var(--ai) var(--fill),var(--ai-tint) var(--fill));color:#fff;text-shadow:0 1px 2px rgba(43,45,66,.35)}#btnSelectAllBab{grid-column:1 / -1;background:transparent;border:1.5px solid var(--ai);color:var(--ai-deep)}#btnSelectAllBab.on{background:var(--ai);color:#fff;border-color:var(--ai)}.noBab{font-size:13px;color:var(--label-tertiary)}.bab-popup-overlay{display:none;position:fixed;inset:0;background:#2b2d4252;z-index:200;align-items:flex-end;justify-content:center}.bab-popup-overlay.open{display:flex}.bab-popup-box{width:100%;max-width:520px;background:var(--card-bg);border-radius:20px 20px 0 0;box-shadow:var(--shadow-3);padding:16px 18px 22px;box-sizing:border-box;max-height:70vh;overflow-y:auto;animation:babPopupUp .22s var(--ease-spring)}@keyframes babPopupUp{0%{transform:translateY(24px);opacity:0}to{transform:translateY(0);opacity:1}}.bab-popup-heads{display:flex;flex-direction:column;gap:8px;margin-bottom:12px}.bab-popup-head{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:12px 14px;border:none;border-radius:var(--r-sm);background:var(--ai-tint);color:var(--ai-deep);font-weight:700;font-size:15px;cursor:pointer;width:100%;text-align:left;transition:all .15s ease}.bab-popup-head.on{background:var(--ai);color:#fff}.bab-popup-head.partial{background:linear-gradient(to right,var(--ai) var(--fill),var(--ai-tint) var(--fill));color:#fff;text-shadow:0 1px 2px rgba(43,45,66,.35)}.bab-popup-head .hint{font-size:11px;font-weight:600;opacity:.85}.bab-popup-close{border:none;background:transparent;color:var(--label-tertiary);font-size:20px;cursor:pointer;line-height:1;padding:2px 6px}.bab-popup-titlebar{display:flex;align-items:center;justify-content:space-between;margin-bottom:6px}.bab-popup-titlebar .t{font-size:12px;font-weight:700;color:var(--label-secondary);letter-spacing:.02em}.bab-popup-list{display:flex;flex-direction:column;gap:8px}.bab-popup-item{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:12px 14px;border:none;border-radius:var(--r-sm);background:var(--washi);color:var(--sumi);font-weight:600;font-size:14px;cursor:pointer;width:100%;text-align:left;transition:all .15s ease}.bab-popup-item:active{transform:scale(.98)}.bab-popup-item.on{background:var(--success);color:#fff}.bab-popup-item .check{font-size:13px;opacity:0;transition:opacity .15s ease}.bab-popup-item.on .check{opacity:1}.progressbar{height:6px;background:var(--washi-2);border-radius:20px;overflow:hidden;margin-bottom:20px}.progressbar>div{height:100%;background:var(--ai);border-radius:20px;transition:width .3s var(--ease-out)}.deckmeta{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:8px;font-size:13px;color:var(--label-secondary);margin-bottom:12px;font-weight:500}.deckmeta-bab{justify-self:center;font-weight:700;color:var(--ai-deep);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%}.deckmeta-right{justify-self:end;display:flex;gap:10px;white-space:nowrap}.deckmeta b{color:var(--sumi);font-weight:700}.furirow{display:flex;justify-content:center;align-items:center;flex-wrap:wrap;gap:8px;margin:16px 0 12px}.furitoggle{background:var(--washi-2);border:none;border-radius:20px;padding:7px 16px;font-size:13px;font-weight:600;color:var(--label-secondary);cursor:pointer;display:flex;align-items:center;gap:7px;letter-spacing:.01em;transition:all .2s ease}.furitoggle .dot{width:8px;height:8px;border-radius:50%;background:#c7c7cc;transition:background .2s ease}.furitoggle.on{background:var(--ai-tint);color:var(--ai-deep)}.furitoggle.on .dot{background:var(--ai)}.stage{position:relative;height:400px;margin-bottom:18px}.empty{height:400px;display:flex;align-items:center;justify-content:center;flex-direction:column;gap:10px;border:none;border-radius:var(--r-lg);text-align:center;padding:20px;color:var(--label-secondary);background:var(--card-bg);box-shadow:var(--shadow-1)}.empty .kanji-mark{font-family:"Noto Serif JP",serif;font-size:36px;color:var(--ai-light);opacity:.5}.empty .empty-mascot{width:clamp(64px,22vw,96px);height:auto}.card{position:absolute;inset:0;-webkit-perspective:1400px;perspective:1400px}.card.card-exit-right{animation:cardFallRight .35s cubic-bezier(.25,.1,.4,1) forwards}.card.card-exit-left{animation:cardFallLeft .35s cubic-bezier(.25,.1,.4,1) forwards}@keyframes cardFallRight{0%{transform:translate(0) rotate(0);opacity:1}70%{opacity:1}to{transform:translate(160%,120px) rotate(22deg);opacity:0}}@keyframes cardFallLeft{0%{transform:translate(0) rotate(0);opacity:1}70%{opacity:1}to{transform:translate(-160%,120px) rotate(-22deg);opacity:0}}.card.card-enter{animation:cardEnterPop .2s cubic-bezier(.2,.8,.2,1)}@keyframes cardEnterPop{0%{transform:scale(.93) translateY(6px);opacity:0}to{transform:scale(1) translateY(0);opacity:1}}.card-inner{width:100%;height:100%;position:relative;-webkit-transform-style:preserve-3d;transform-style:preserve-3d;transition:transform .5s cubic-bezier(.4,0,.2,1);cursor:pointer}.card-inner.flipped{-webkit-transform:rotateY(180deg);transform:rotateY(180deg)}@keyframes cardFlipPulse{0%{transform:scale(1)}45%{transform:scale(.96)}to{transform:scale(1)}}.card.is-flipping{animation:cardFlipPulse .5s cubic-bezier(.4,0,.2,1)}.face{position:absolute;inset:0;-webkit-backface-visibility:hidden;backface-visibility:hidden;border-radius:var(--r-lg);border:none;background:var(--card-bg);box-shadow:var(--shadow-2);display:flex;flex-direction:column;overflow:hidden;transition:box-shadow .5s ease}.face-scroll{width:100%;height:100%;overflow-y:auto;-webkit-overflow-scrolling:touch;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:16px 20px 46px;text-align:center;gap:6px;box-sizing:border-box;-webkit-transform:translateZ(0);transform:translateZ(0)}.card.is-flipping .face{box-shadow:var(--shadow-3)}.face:before{display:none}.front .main{font-family:"Noto Serif JP",serif;font-weight:700;font-size:calc(50px * var(--fs-scale));color:var(--sumi);line-height:1.85}.front .reading{font-size:calc(15px * var(--fs-scale));color:var(--ai-light);letter-spacing:.05em}.back .main{font-family:"Noto Serif JP",serif;font-weight:700;color:var(--sumi);line-height:1.65;font-size:calc(36px * var(--fs-scale));margin-bottom:2px}.back.compact .main{font-size:calc(25px * var(--fs-scale));margin-bottom:0}.face.multi-ex .back .main{font-size:calc(19px * var(--fs-scale))}.back.compact .meaning{font-size:calc(17px * var(--fs-scale))}.back.compact .kanji-main-with-ruby{font-size:calc(33px * var(--fs-scale));line-height:1.4}.back.compact .kanji-meaning{font-size:calc(12px * var(--fs-scale));padding:3px 8px}.babtag{position:absolute;top:14px;left:16px;font-size:11px;font-weight:700;color:var(--ai);letter-spacing:.02em;border:none;background:var(--ai-tint);padding:4px 10px;border-radius:20px}.back{-webkit-transform:rotateY(180deg);transform:rotateY(180deg)}.back:not(.kanji-back):not(.bunpou-back) .face-scroll{justify-content:flex-start;padding-top:34px}.face.multi-ex .face-scroll{padding-top:4px;gap:2px;padding-bottom:40px}.back .reading{font-size:calc(15px * var(--fs-scale));color:var(--ai);margin-bottom:4px;font-weight:600;font-style:normal}.face.multi-ex .back .reading{font-size:calc(13px * var(--fs-scale));margin-bottom:2px}.back .meaning{display:flex;align-items:center;justify-content:center;gap:8px;font-family:-apple-system,sans-serif;font-weight:700;font-size:calc(26px * var(--fs-scale));color:var(--sumi);font-style:normal;line-height:1.3}.meaning-lamp-btn{flex-shrink:0;margin-left:0}.face.multi-ex .back .meaning{font-size:calc(18px * var(--fs-scale));line-height:1.1;margin-bottom:0}.back .example{font-size:calc(17px * var(--fs-scale));color:var(--label-secondary);line-height:2.15;border-top:1px solid var(--line);padding-top:14px;margin-top:8px;white-space:normal;display:flex;flex-direction:column;gap:10px;width:100%}.face.multi-ex .back .example{padding-top:5px;margin-top:3px;gap:4px}.example-note{font-size:calc(13px * var(--fs-scale));color:var(--label-tertiary);font-style:normal;line-height:1.5}.face.multi-ex .back .example-note{font-size:calc(10.5px * var(--fs-scale));line-height:1.2;margin-bottom:1px}.example-pair{background:var(--washi);border-radius:var(--r-sm);padding:12px 13px;text-align:left;position:relative}.example-pair+.example-pair{margin-top:0}.example-pair-no{display:inline-block;font-size:10px;font-weight:700;color:#fff;background:var(--ai);width:16px;height:16px;line-height:16px;text-align:center;border-radius:50%;margin-bottom:8px}.example-jp{font-size:calc(16px * var(--fs-scale));line-height:2.05}.example-id{font-size:calc(13.5px * var(--fs-scale));color:var(--label-secondary);font-style:normal;line-height:1.5;margin-top:6px}.back .example ruby rt{font-size:.5em;color:var(--furigana);font-weight:700;letter-spacing:.01em}.back .example ruby rt.hidden{display:none}.example-count-1 .example-pair{padding:16px}.example-count-1 .example-jp{font-size:calc(22px * var(--fs-scale));line-height:1.9}.example-count-1 .example-id{font-size:calc(16px * var(--fs-scale));margin-top:9px;line-height:1.55}.example-count-2{gap:4px}.example-count-2 .example-pair{padding:6px 10px}.example-count-2 .example-pair-no{margin-bottom:3px}.example-count-2 .example-jp{font-size:calc(15.5px * var(--fs-scale));line-height:1.4}.example-count-2 .example-id{font-size:calc(12px * var(--fs-scale));margin-top:3px;line-height:1.25}.example-count-3{gap:5px}.example-count-3 .example-pair{padding:6px 9px}.example-count-3 .example-pair-no{width:14px;height:14px;line-height:14px;font-size:9px;margin-bottom:3px}.example-count-3 .example-jp{font-size:calc(14.5px * var(--fs-scale));line-height:1.35}.example-count-3 .example-id{font-size:calc(11.5px * var(--fs-scale));margin-top:2px;line-height:1.2}.example-count-4{gap:4px}.example-count-4 .example-pair{padding:5px 8px}.example-count-4 .example-pair-no{width:13px;height:13px;line-height:13px;font-size:8.5px;margin-bottom:2px}.example-count-4 .example-jp{font-size:calc(13px * var(--fs-scale));line-height:1.25}.example-count-4 .example-id{font-size:calc(10.5px * var(--fs-scale));margin-top:2px;line-height:1.1}.back.kanji-back .face-scroll{flex-direction:column;justify-content:flex-start;gap:8px;padding:16px 16px 46px}.kanji-main-with-ruby{font-family:"Noto Serif JP",serif;font-weight:700;font-size:calc(42px * var(--fs-scale));color:var(--sumi);line-height:1.5}ruby{ruby-position:over;ruby-align:center;margin:0 1px}ruby rt{font-size:.5em;color:var(--furigana);font-weight:700;letter-spacing:.01em}ruby rt.hidden{display:none}.kanji-top-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;width:100%;align-items:stretch}.kanji-top-left{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;border:none;border-radius:var(--r-sm);padding:10px 8px;background:var(--washi)}.kanji-top-right{display:flex}.kanji-readings{display:flex;gap:14px;width:100%;justify-content:center}.kanji-reading-group{text-align:center}.kanji-reading-label{font-size:9px;text-transform:uppercase;letter-spacing:.06em;color:var(--label-tertiary);margin-bottom:2px;display:block;font-weight:700}.kanji-reading-value{font-size:calc(13px * var(--fs-scale));color:var(--ai);font-weight:700}.kanji-meanings{display:flex;flex-wrap:wrap;gap:4px;justify-content:center;width:100%}.kanji-meaning{font-weight:700;font-size:calc(11px * var(--fs-scale));color:var(--ai-deep);padding:3px 9px;background:var(--ai-tint);border-radius:12px}.kanji-structure{width:100%;height:100%;box-sizing:border-box;background:#c9962f14;border:none;border-radius:var(--r-sm);padding:8px;text-align:center;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px}.kanji-structure-formula{font-family:"Noto Serif JP",serif;font-size:calc(16px * var(--fs-scale));font-weight:700;color:var(--sumi);line-height:1.3}.kanji-structure-formula .plus{color:var(--gold);font-size:11px;margin:0 2px;font-family:inherit}.kanji-structure-note{font-size:calc(10px * var(--fs-scale));color:#8a6b1f;line-height:1.3;font-weight:500}.kanji-front-reading{font-size:calc(13px * var(--fs-scale));color:var(--ai);margin-top:8px;letter-spacing:.01em;font-weight:600}.kanji-front-reading.locked{color:var(--label-tertiary);font-style:normal}.kanji-vocab-grid{display:grid;grid-template-columns:1fr 1fr;gap:6px;width:100%;padding-top:10px;margin-top:0;border-top:1px solid var(--line)}.kanji-vocab-item{position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;gap:2px;padding:8px 6px 7px;border:none;border-radius:var(--r-sm);background:var(--washi)}.kanji-vocab-letter{position:absolute;top:5px;left:6px;font-size:8.5px;font-weight:700;color:#fff;background:var(--ai);width:14px;height:14px;border-radius:50%;display:flex;align-items:center;justify-content:center;letter-spacing:0}.kanji-vocab-word{font-family:"Noto Serif JP",serif;font-weight:600;color:var(--sumi);font-size:calc(14px * var(--fs-scale));line-height:1.8;margin-top:3px}.kanji-vocab-word ruby 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