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18px;font-size:var(--fs-subhead);color:var(--text-2)}.sv2-wall-b{display:block;width:100%;height:50px;border-radius:var(--radius-md);background:var(--primary);color:var(--on-primary);font-size:var(--fs-callout);font-weight:var(--fw-semibold);border:none;font-family:inherit;cursor:pointer}.sv2-wall-x{display:block;width:100%;padding:14px;font-size:var(--fs-subhead);color:var(--text-3);background:none;border:none;font-family:inherit;cursor:pointer}.sv2-toast{position:fixed;left:50%;bottom:calc(env(safe-area-inset-bottom,0px) + 100px);transform:translate(-50%);background:var(--text-strong);color:var(--bg);font-size:var(--fs-subhead);padding:10px 16px;border-radius:var(--radius-pill);z-index:80;white-space:nowrap;box-shadow:var(--shadow)}.sv2-toast button{color:var(--primary);font-weight:var(--fw-semibold);margin-left:12px;background:none;border:none;font-family:inherit;font-size:var(--fs-subhead);cursor:pointer}@media (prefers-reduced-motion: reduce){.sv2-row,.sv2-tool,.sv2-card-a,.sv2-grade{transition:none}}.wv2-cats{display:flex;gap:var(--sp-2);overflow-x:auto;scrollbar-width:none;padding:var(--sp-1) 0 var(--sp-2);position:relative}.wv2-cats::-webkit-scrollbar{display:none}.wv2-list{transition:opacity .14s ease-out,transform .22s cubic-bezier(.2,.8,.2,1)}.wv2-list.out{opacity:0;transform:translateY(4px);transition-duration:.11s,.11s}.wv2-rw{position:relative;overflow:hidden}.wv2-row{position:relative;display:grid;grid-template-columns:28px 1fr auto auto;gap:var(--sp-2);align-items:center;width:100%;padding:var(--sp-3) var(--sp-3) var(--sp-3) var(--sp-4);min-height:62px;background:var(--surface);text-align:left;border:none;font-family:inherit;color:inherit;cursor:pointer;transition:transform .3s cubic-bezier(.2,.8,.2,1);touch-action:pan-y;-webkit-tap-highlight-color:transparent}.wv2-row.dragging{transition:none}.wv2-rw+.wv2-rw .wv2-row:before{content:"";position:absolute;left:52px;right:0;top:0;border-top:1px solid var(--bd)}.wv2-rw.open .wv2-row{transform:translate(-96px)}.wv2-action{position:absolute;top:0;bottom:0;right:0;width:96px;border:none;background:var(--primary);color:var(--on-primary);font-family:inherit;font-size:var(--fs-caption);font-weight:600;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:var(--sp-1);cursor:pointer}.wv2-action.unsave{background:var(--text-3)}.wv2-detail{position:fixed;top:0;right:0;bottom:0;left:0;z-index:65;background:var(--bg);overflow-y:auto;-webkit-overflow-scrolling:touch;touch-action:pan-y;padding-left:env(safe-area-inset-left,0px);padding-right:env(safe-area-inset-right,0px)}.wv2-detail ruby{ruby-align:center}.wv2-detail rt{font-size:max(.55em,8px);color:var(--text-3);font-weight:400;-webkit-user-select:none;user-select:none}.wv2-sheet-bg{position:fixed;top:0;right:0;bottom:0;left:0;z-index:70;background:var(--overlay)}.wv2-sheet{position:fixed;left:max(var(--sp-2),env(safe-area-inset-left,0px));right:max(var(--sp-2),env(safe-area-inset-right,0px));bottom:calc(env(safe-area-inset-bottom,0px) + var(--sp-2));z-index:71}.kp-studio{max-width:1120px;margin:auto;padding:48px 24px;display:grid;grid-template-columns:1fr 420px;gap:96px;align-items:start;min-height:100dvh}.kp-intro{position:sticky;top:48px;min-height:780px;display:flex;flex-direction:column;justify-content:space-between;padding:var(--sp-4) 0}.kp-brand{color:var(--text-strong);font-size:var(--fs-title2);font-weight:700;text-decoration:none;letter-spacing:-.04em}.kp-brand span{display:block;font-size:var(--fs-caption);font-weight:400;letter-spacing:0;color:var(--text-2);margin-top:var(--sp-2)}.kp-eyebrow{color:var(--primary-strong);font-size:var(--fs-caption);font-weight:600;letter-spacing:.08em;margin-bottom:var(--sp-4)}.kp-intro h1{font-size:var(--fs-display);font-weight:600;letter-spacing:-.045em;line-height:1.45;color:var(--text-strong)}.kp-description{font-size:var(--fs-body);color:var(--text-2);line-height:1.9;margin-top:var(--sp-5)}.kp-flow{display:flex;gap:var(--sp-3);margin-top:32px;font-size:var(--fs-caption);color:var(--text-2)}.kp-flow span+span:before{content:"›";margin-right:var(--sp-3);color:var(--text-3)}.kp-phone{position:relative;background:var(--surface);border:1px solid var(--bd-2);border-radius:var(--radius-sheet);box-shadow:var(--shadow);overflow:hidden;min-height:830px;display:flex;flex-direction:column}.kp-header{height:72px;display:flex;align-items:center;justify-content:space-between;padding:0 var(--sp-5);font-size:var(--fs-subhead);font-weight:600}.kp-back{border:0;background:none;color:var(--text-strong);font-size:var(--fs-title2);cursor:pointer}.kp-content{padding:var(--sp-5) var(--sp-6) 32px;flex:1;min-width:0}.kp-content h2{font-size:var(--fs-title1);font-weight:600;line-height:1.45;letter-spacing:-.04em;color:var(--text-strong);margin-bottom:var(--sp-3)}.kp-muted{color:var(--text-2);font-size:var(--fs-subhead);line-height:1.8}.kp-daily{width:100%;text-align:left;border:1px solid var(--primary-tint-bd);background:var(--primary-tint);padding:var(--sp-5);border-radius:var(--radius-card);color:var(--primary-strong);margin:var(--sp-6) 0 var(--sp-4);cursor:pointer}.kp-card-top{display:flex;justify-content:space-between;align-items:center;font-size:var(--fs-caption);gap:var(--sp-3)}.kp-hero-kanji{font-family:serif;font-size:var(--fs-display);transform:scale(3);height:144px;display:flex;align-items:center;justify-content:center;transform-origin:center;pointer-events:none}.kp-card-bottom{position:relative;display:flex;align-items:center;justify-content:space-between}.kp-card-bottom h3{font-size:var(--fs-title3);color:var(--text-strong);font-weight:600}.kp-card-bottom p{font-size:var(--fs-caption);margin-top:var(--sp-2)}.kp-circle{border:1px solid var(--primary-tint-bd);border-radius:var(--radius-pill);width:40px;height:40px;display:grid;place-items:center;font-size:var(--fs-title3)}.kp-summary{display:flex;align-items:center;justify-content:space-between;width:100%;padding:var(--sp-4) 0;background:none;border:0;border-bottom:1px solid var(--bd);color:var(--text-1);font:inherit;font-size:var(--fs-subhead);cursor:pointer}.kp-summary strong{color:var(--primary-strong)}.kp-section-label{font-size:var(--fs-caption);color:var(--text-2);margin:var(--sp-6) 0 var(--sp-3)}.kp-story-row{display:flex;align-items:center;gap:var(--sp-3);width:100%;text-align:left;border:0;background:none;color:var(--text-1);padding:var(--sp-3) 0;cursor:pointer}.kp-mini-kanji{font-family:serif;font-size:var(--fs-title2);background:var(--surface-2);border-radius:var(--radius-md);width:48px;height:48px;display:grid;place-items:center}.kp-story-row strong{font-size:var(--fs-subhead);font-weight:500}.kp-story-row small{display:block;margin-top:var(--sp-1);color:var(--text-2);font-size:var(--fs-caption)}.kp-story-row>span:last-child{margin-left:auto}.kp-notification{width:100%;margin-top:var(--sp-5);padding:var(--sp-4);border:0;border-radius:var(--radius-md);background:var(--surface-2);text-align:left;color:var(--text-2);font-size:var(--fs-caption);cursor:pointer}.kp-notification span{float:right}.kp-nav{display:flex;border-top:1px solid var(--bd);padding:var(--sp-2) var(--sp-6) var(--sp-4);background:var(--surface)}.kp-nav button{flex:1;border:0;background:none;min-height:48px;color:var(--text-2);font-size:var(--fs-caption);cursor:pointer}.kp-nav button span{display:block;font-size:var(--fs-title2);margin-bottom:var(--sp-1)}.kp-nav button[aria-current]{color:var(--primary-strong)}.kp-button{display:block;width:100%;min-height:48px;border:1px solid var(--bd);background:var(--surface);color:var(--text-1);border-radius:var(--radius-md);padding:var(--sp-3) var(--sp-4);font:inherit;font-size:var(--fs-subhead);font-weight:500;cursor:pointer}.kp-button+.kp-button{margin-top:var(--sp-2)}.kp-primary{background:var(--primary-deep);border-color:var(--primary-deep);color:var(--on-primary)}.kp-button:disabled{opacity:.4;cursor:default}.kp-button[aria-pressed=true]{border-color:var(--primary-strong);background:var(--primary-tint);color:var(--primary-strong)}.kp-note{font-size:var(--fs-caption);line-height:1.8;color:var(--text-2);margin-top:var(--sp-4)}.kp-intro .kp-button{width:auto}.kp-level{background:var(--surface-2);border-radius:var(--radius-pill);padding:var(--sp-1) var(--sp-3);font-size:var(--fs-caption);color:var(--text-2)}.kp-word{display:flex;align-items:center;gap:var(--sp-3);margin:var(--sp-5) 0 var(--sp-6);font-size:var(--fs-subhead)}.kp-word>span{background:var(--primary-tint);color:var(--primary-strong);font-family:serif;font-size:var(--fs-title1);border-radius:var(--radius-md);width:56px;height:56px;display:grid;place-items:center}.kp-word small{display:block;color:var(--text-2);font-size:var(--fs-caption);margin-top:var(--sp-1)}.kp-passage{font-size:var(--fs-title3);line-height:2.3;color:var(--text-strong);font-family:Hiragino Sans,Noto Sans JP,sans-serif;word-break:normal;overflow-wrap:anywhere}.kp-passage p{margin-bottom:var(--sp-4)}.kp-passage rt{font-size:var(--fs-caption2);font-weight:400;color:var(--text-2)}.kp-passage small{display:block;font-family:inherit;font-size:var(--fs-subhead);line-height:1.8;color:var(--text-2);margin-top:var(--sp-2)}.kp-tools{display:flex;justify-content:space-between;gap:var(--sp-2);border-top:1px solid var(--bd);padding-top:var(--sp-3)}.kp-tools button{background:none;border:0;min-height:44px;font-size:var(--fs-caption);color:var(--text-2);cursor:pointer}.kp-tools button[aria-pressed=true]{color:var(--primary-strong)}.kp-actions{margin-top:var(--sp-6)}.kp-actions>.kp-note:first-child{text-align:center;margin-bottom:var(--sp-3)}.kp-question{padding-top:var(--sp-5);border-top:1px solid var(--bd)}.kp-question h3{font-size:var(--fs-body);font-weight:600;margin-bottom:var(--sp-4)}.kp-answers{display:flex;gap:var(--sp-2)}.kp-answers .kp-button{margin:0}.kp-feedback{color:var(--primary-strong);font-size:var(--fs-subhead);line-height:1.8;margin:var(--sp-4) 0}.kp-context{background:var(--surface-2);border-radius:var(--radius-md);padding:var(--sp-4);font-size:var(--fs-subhead);margin:var(--sp-5) 0}.kp-canvas-wrap{position:relative;aspect-ratio:1;border:1px solid var(--bd-2);border-radius:var(--radius-card);overflow:hidden;background:linear-gradient(var(--bd),var(--bd)) center/1px 100% no-repeat,linear-gradient(var(--bd),var(--bd)) center/100% 1px no-repeat}.kp-trace{position:absolute;top:0;right:0;bottom:0;left:0;display:grid;place-items:center;font-family:serif;font-size:var(--fs-display);transform:scale(6);color:var(--bd-2);pointer-events:none}.kp-canvas-wrap canvas{position:relative;width:100%;height:100%;display:block;touch-action:none}.kp-complete{text-align:center}.kp-complete-mark{width:48px;height:48px;border-radius:var(--radius-pill);background:var(--primary-tint);color:var(--primary-strong);display:grid;place-items:center;margin:var(--sp-4) auto var(--sp-6);font-size:var(--fs-title2)}.kp-keepsake{display:flex;flex-direction:column;align-items:center;background:var(--surface-2);border:1px solid var(--bd);border-radius:var(--radius-card);padding:32px var(--sp-5);margin:var(--sp-6) 0;font-size:var(--fs-subhead)}.kp-keepsake-char{font-family:serif;font-size:var(--fs-display);transform:scale(2);margin:var(--sp-6) 0 40px;color:var(--primary-strong)}.kp-keepsake 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0;background-repeat:no-repeat}.pf-row-label{flex:1;font-size:14.5px;font-weight:500;color:var(--text-1);min-width:0}.pf-row-sub{display:block;font-size:11.5px;color:var(--text-3);margin-top:3px;line-height:1.35}.pf-row-val{font-size:13px;color:var(--text-3);flex-shrink:0;margin-left:8px}.pf-row-chev{flex-shrink:0;margin-left:8px;color:var(--text-3);opacity:.35;font-size:15px}.pf-row-chev:after{content:"›"}.pf-sec{font-size:12px;font-weight:600;color:var(--text-3);padding:24px 6px 8px}.pf-expand{padding:0 16px 14px}.pf-foot{text-align:center;padding:28px 0 0;font-size:11px;color:var(--text-3)}.pf-foot a{color:var(--text-3);text-decoration:none}.pf-foot span{margin:0 5px;opacity:.35}.pf-logout{display:block;width:100%;text-align:center;padding:14px;font:500 13.5px inherit;color:var(--text-3);background:none;border:none;cursor:pointer;margin-top:4px}.tj-review-session{position:fixed;top:0;right:0;bottom:0;left:0;z-index:1200;background:var(--bg);padding:env(safe-area-inset-top,0px) env(safe-area-inset-right,0px) env(safe-area-inset-bottom,0px) env(safe-area-inset-left,0px)}html.is-app .tj-review-session{padding-top:max(env(safe-area-inset-top,0px),44px)}.tj-review-shell{width:100%;max-width:680px;height:100%;margin:0 auto;display:flex;flex-direction:column}.tj-review-body{flex:1;min-height:0;overflow-y:auto;display:flex;flex-direction:column;padding:var(--sp-6) var(--sp-5)}.tj-review-body>*{margin-top:auto;margin-bottom:auto;flex-shrink:0}.rv-banner{display:flex;align-items:center;gap:10px;width:100%;padding:14px 16px;margin-bottom:16px;background:var(--surface);border:1px solid var(--bd);border-radius:12px;cursor:pointer;font-family:inherit;color:var(--text-2);font-size:14px;-webkit-tap-highlight-color:transparent;touch-action:manipulation;transition:background .06s}.rv-banner:active{background:var(--surface-2, rgba(0,0,0,.03))}.rv-banner-text{flex:1;text-align:left}.rv-banner-text strong{color:var(--text-strong);font-weight:700}.rv-overlay{position:fixed;top:0;right:0;bottom:0;left:0;z-index:1000;background-color:var(--bg);display:flex;flex-direction:column;padding:env(safe-area-inset-top,0px) env(safe-area-inset-right,0px) env(safe-area-inset-bottom,0px) env(safe-area-inset-left,0px);touch-action:manipulation;-webkit-text-size-adjust:100%;overflow:hidden}html.is-app .rv-overlay{padding-top:max(env(safe-area-inset-top,0px),44px)}.rv-header{display:flex;align-items:center;justify-content:space-between;padding:var(--sp-2) var(--sp-3);flex-shrink:0;width:100%;max-width:680px;margin:0 auto}.rv-close{width:44px;height:44px;display:flex;align-items:center;justify-content:center;background:none;border:none;color:var(--text-2);cursor:pointer;border-radius:50%;-webkit-tap-highlight-color:transparent}.rv-close:active{background:var(--surface-2, rgba(0,0,0,.04))}.rv-counter{font-size:13px;font-weight:600;color:var(--text-3);font-variant-numeric:tabular-nums}.rv-card{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:24px 16px;gap:20px;overflow-y:auto;width:100%;max-width:680px;margin:0 auto;min-height:0;box-sizing:border-box}.rv-kanji-hl{color:var(--primary);font-weight:600;background:#5ca9ce2e;border-radius:3px;box-decoration-break:clone;-webkit-box-decoration-break:clone}@media (prefers-color-scheme: dark){:root:not([data-theme=light]) .rv-kanji-hl{background:#5ca9ce47}}:root[data-theme=dark] .rv-kanji-hl{background:#5ca9ce47}.rv-jp{text-align:center;line-height:2.2;font-family:Noto Sans JP,sans-serif;word-break:normal;overflow-wrap:anywhere;padding:0 4px;width:100%}.rv-kr{text-align:center;font-size:16px;line-height:2.4;color:var(--text-1);min-height:1.5em;word-break:keep-all;text-wrap:balance;padding:0 4px;width:100%;overflow-wrap:anywhere}.rv-blank{display:inline-block;min-width:2.5em;padding:0 8px;margin:0 2px;line-height:1.6;background:var(--primary, #4ECDC4);opacity:.18;border-radius:6px;color:transparent;transition:all .18s cubic-bezier(.2,0,0,1);vertical-align:baseline;font-weight:600}.rv-blank--active{opacity:.35;transform:scale(1.08);box-shadow:0 0 0 2px var(--primary)}.rv-blank--shown{opacity:1;color:#fff;background:var(--primary, #4ECDC4)}.rv-input-wrap{display:flex;gap:8px;width:100%}.rv-input{flex:1;min-width:0;height:46px;border-radius:10px;border:1.5px solid var(--bd);background:var(--surface);color:var(--text-strong);font:500 16px inherit;padding:0 14px;outline:none;-webkit-appearance:none;transition:border-color .15s}.rv-input:focus{border-color:var(--primary)}.rv-input-submit{flex-shrink:0;height:46px;padding:0 18px;border-radius:10px;border:none;background:var(--primary);color:#fff;font:600 14px inherit;cursor:pointer;-webkit-tap-highlight-color:transparent}@keyframes rv-shake{0%,to{transform:translate(0)}20%,60%{transform:translate(-5px)}40%,80%{transform:translate(5px)}}.rv-input--shake{animation:rv-shake .3s ease;border-color:var(--danger, #ff3b30)!important}.rv-reveal-btn{padding:10px 24px;border-radius:10px;background:none;border:1.5px solid var(--bd);color:var(--text-2);font:600 13px inherit;cursor:pointer;-webkit-tap-highlight-color:transparent}.rv-reveal-btn:active{background:var(--surface-2, rgba(0,0,0,.03))}.rv-actions{display:flex;gap:var(--sp-2);padding:var(--sp-4);flex-shrink:0;width:100%;max-width:680px;margin:0 auto}.tj-audio-hint-sheet::backdrop{background:var(--overlay)}