:root{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;--bg:#f5f5f6;--surface:#fff;--surface-2:#fafafa;--text:#1b1b1f;--muted:#5a5a63;--faint:#6f6f7a;--border:#ececef;--border-strong:#dedee2;--primary:#5b57d6;--primary-hover:#4a46c4;--primary-weak:#eeeefb;--on-primary:#fff;--good:#2f9e5f;--good-weak:#eaf7f0;--danger:#d64545;--c-new:#2f62c8;--c-learn:#cc4046;--c-due-count:#2f8253;--chart-reviews:#5b57d6;--chart-due:#2f8253;--rate-again:#cc4046;--rate-hard:#a76229;--rate-good:#2f8253;--rate-easy:#4a6fc0;--radius:12px;--radius-sm:9px;--radius-lg:18px;--shadow-sm:0 1px 2px #11111a0a, 0 1px 3px #11111a0d;--shadow-md:0 2px 6px #11111a0d, 0 8px 24px #11111a12;--font:-apple-system, BlinkMacSystemFont, "PingFang TC", "Hiragino Sans", "Noto Sans TC", "Segoe UI", Roboto, "Helvetica Neue", sans-serif;--font-ja:"Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", "Yu Gothic", "Meiryo", sans-serif}:root[data-theme=dark]{--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;--bg:#0f1013;--surface:#17181c;--surface-2:#1c1d22;--text:#e8e8ec;--muted:#9a9aa6;--faint:#8a8a96;--border:#262731;--border-strong:#33343f;--primary:#8683f0;--primary-hover:#9a97f4;--primary-weak:#20213a;--on-primary:#12121a;--good:#4bb37c;--good-weak:#16241d;--danger:#e8686a;--c-new:#7ea6ff;--c-learn:#e0686c;--c-due-count:#4bb37c;--chart-reviews:#8683f0;--chart-due:#4bb37c;--rate-again:#c2383e;--rate-hard:#9c5a22;--rate-good:#2a7a4c;--rate-easy:#4566b8;--shadow-sm:0 1px 2px #0000004d, 0 1px 3px #00000059;--shadow-md:0 2px 8px #00000059, 0 10px 28px #00000073}*{box-sizing:border-box;margin:0}a,button,.btn,.link,.speak-btn,.flashcard,input,select,textarea,label{touch-action:manipulation}html{-webkit-text-size-adjust:100%}body{font-family:var(--font);background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased;text-rendering:optimizelegibility;font-size:15px;line-height:1.6}[lang=ja]{font-family:var(--font-ja)}.topnav{padding:calc(6px + env(safe-area-inset-top,0px)) calc(12px + env(safe-area-inset-right,0px)) 6px calc(12px + env(safe-area-inset-left,0px));background:color-mix(in srgb, var(--surface) 82%, transparent);-webkit-backdrop-filter:saturate(180%)blur(12px);backdrop-filter:saturate(180%)blur(12px);border-bottom:1px solid var(--border);z-index:10;gap:4px;display:flex;position:sticky;top:0}.topnav a{color:var(--muted);border-radius:8px;align-items:center;min-height:44px;padding:0 14px;font-size:14.5px;font-weight:550;text-decoration:none;transition:color .15s,background .15s;display:inline-flex}@media (hover:hover){.topnav a:hover{color:var(--text);background:color-mix(in srgb, var(--text) 6%, transparent)}}.topnav a:active{color:var(--text);background:color-mix(in srgb, var(--text) 10%, transparent)}.topnav a.active{color:var(--primary);background:var(--primary-weak)}.page{max-width:660px;padding:32px calc(18px + env(safe-area-inset-right,0px)) calc(80px + env(safe-area-inset-bottom,0px)) calc(18px + env(safe-area-inset-left,0px));margin:0 auto}h1{letter-spacing:-.02em;margin-bottom:22px;font-size:27px;font-weight:700}h2{letter-spacing:-.01em;color:var(--muted);margin:32px 0 12px;font-size:16px;font-weight:650}.btn{border-radius:var(--radius-sm);background:var(--primary);color:var(--on-primary);cursor:pointer;white-space:nowrap;border:none;justify-content:center;align-items:center;padding:9px 17px;font-family:inherit;font-size:14.5px;font-weight:550;text-decoration:none;transition:background .15s,transform 60ms,box-shadow .15s;display:inline-flex}@media (hover:hover){.btn:hover{background:var(--primary-hover)}}.btn:active{transform:translateY(1px)}.btn:focus-visible{outline:2px solid var(--primary);outline-offset:2px}.btn.secondary{background:var(--surface);color:var(--text);border:1px solid var(--border-strong)}@media (hover:hover){.btn.secondary:hover{background:var(--surface-2);border-color:var(--muted)}}.btn.danger{background:var(--danger)}@media (hover:hover){.btn.danger:hover{background:color-mix(in srgb, var(--danger) 85%, black)}}.btn:disabled{opacity:.55;cursor:not-allowed;transform:none}input,select,textarea{border:1px solid var(--border-strong);border-radius:var(--radius-sm);background:var(--surface);color:var(--text);padding:9px 12px;font-family:inherit;font-size:16px;transition:border-color .15s,box-shadow .15s}input:focus,select:focus,textarea:focus{border-color:var(--primary);box-shadow:0 0 0 3px color-mix(in srgb, var(--primary) 18%, transparent);outline:none}textarea{resize:vertical}.deck-list{padding:0;list-style:none}.deck-row{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow-sm);align-items:center;gap:14px;margin-bottom:10px;padding:16px 18px;transition:transform .12s,box-shadow .15s,border-color .15s;display:flex}@media (hover:hover){.deck-row:hover{box-shadow:var(--shadow-md);border-color:var(--border-strong);transform:translateY(-1px)}}.deck-name{color:inherit;letter-spacing:-.01em;flex:1;margin:-24px 0;padding:24px 0;font-size:16px;font-weight:600;text-decoration:none}.counts{font-variant-numeric:tabular-nums;color:var(--faint);font-size:14px;font-weight:550}.c-new{color:var(--c-new)}.c-learn{color:var(--c-learn)}.c-due{color:var(--c-due-count)}.done-mark{color:var(--good);padding:0 12px}.empty{color:var(--faint);text-align:center;padding:40px 0}.new-deck{gap:8px;margin-top:20px;display:flex}.new-deck input{flex:1}.review{flex-direction:column;align-items:center;gap:18px;display:flex}.session-progress{background:var(--surface-2);border-radius:999px;width:100%;height:4px;overflow:hidden}.session-progress>span{background:var(--primary);border-radius:999px;height:100%;transition:width .3s;display:block}.review-head{justify-content:space-between;align-items:center;width:100%;min-height:28px;display:flex}.kbd-hint{opacity:.6;font-weight:400}@media (hover:none){.kbd-hint{display:none}}.remaining{color:var(--faint);font-variant-numeric:tabular-nums;font-size:13px;font-weight:550}.flashcard{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);cursor:pointer;width:100%;min-height:300px;box-shadow:var(--shadow-md);flex-direction:column;justify-content:center;align-items:center;gap:16px;padding:40px 28px;animation:.22s card-in;display:flex}@keyframes card-in{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}.card-face{flex-direction:column;align-items:center;gap:16px;animation:.16s card-in;display:flex}@media (prefers-reduced-motion:reduce){.flashcard,.card-face{animation:none}}.today-line{color:var(--muted);margin:-14px 0 18px;font-size:14px}.today-line b{font-variant-numeric:tabular-nums}.settings-block label.check-row{flex-direction:row;align-items:center}.settings-block .tabs{margin-bottom:0}.expression{letter-spacing:-.01em;text-align:center;overflow-wrap:anywhere;font-size:46px;font-weight:700;line-height:1.25}.expression.long{font-size:27px;line-height:1.45}.reading{color:var(--primary);font-size:21px;font-weight:550}.pitch{align-items:flex-start;gap:5px;display:inline-flex}.pitch-morae{display:inline-flex}.pitch-morae .mora{border-top:2px solid #0000;padding:0 1px;line-height:2}.pitch-morae .mora.high{border-top-color:currentColor}.pitch-morae .mora.drop{border-right:2px solid}.pitch-num{opacity:.85;font-variant-numeric:tabular-nums;font-size:.66em}.meaning{color:var(--text);text-align:center;font-size:20px}.speak-btn{border:1px solid var(--border-strong);background:var(--surface);color:var(--text);cursor:pointer;border-radius:999px;flex-shrink:0;justify-content:center;align-items:center;width:42px;height:42px;font-size:18px;line-height:1;transition:background .15s,border-color .15s,transform 60ms;display:inline-flex}@media (hover:hover){.speak-btn:hover{background:var(--surface-2);border-color:var(--muted)}}.speak-btn:active{transform:translateY(1px)}.speak-btn:focus-visible{outline:2px solid var(--primary);outline-offset:2px}.show-answer{width:100%;padding:15px;font-size:15px}.ratings{grid-template-columns:repeat(4,1fr);gap:8px;width:100%;display:grid}.ratings .btn{color:#fff;flex-direction:column;align-items:center;gap:3px;padding:12px 4px;display:flex}.ratings small{opacity:.9;font-variant-numeric:tabular-nums;font-size:11.5px;font-weight:500}.rating-1{background:var(--rate-again)}.rating-2{background:var(--rate-hard)}.rating-3{background:var(--rate-good)}.rating-4{background:var(--rate-easy)}@media (hover:hover){.rating-1:hover,.rating-2:hover,.rating-3:hover,.rating-4:hover{filter:brightness(1.06);background-image:none}}.card-actions{justify-content:center;gap:12px;width:100%;display:flex}.card-actions .link{background:var(--surface);border:1px solid var(--border-strong);border-radius:999px;align-items:center;gap:7px;min-height:42px;padding:0 18px;font-size:14px;display:inline-flex}@media (hover:hover){.card-actions .link:hover{color:var(--text);background:var(--surface-2);border-color:var(--muted)}}.card-actions .link:active{transform:translateY(1px)}.icon-link{align-items:center;gap:6px;display:inline-flex}.icon-link svg{flex-shrink:0}.review .note-form{text-align:left;width:100%}.review-done{text-align:center;flex-direction:column;align-items:center;gap:16px;padding-top:56px;display:flex}.review-done h1{font-size:30px}.err{color:var(--danger);font-size:14px}.route-progress{background:0 0;height:2px;overflow:hidden}.route-progress.active:after{content:"";background:var(--primary);border-radius:2px;width:40%;height:100%;animation:.9s ease-in-out infinite route-slide;display:block}@keyframes route-slide{0%{transform:translate(-100%)}to{transform:translate(350%)}}.loading{color:var(--faint);justify-content:center;align-items:center;gap:10px;padding:48px 0;font-size:14px;display:flex}.spinner{border:2px solid var(--border-strong);border-top-color:var(--primary);border-radius:50%;width:16px;height:16px;animation:.7s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}@media (prefers-reduced-motion:reduce){.spinner{animation-duration:2s}}.rate-toast{left:50%;bottom:calc(14px + env(safe-area-inset-bottom,0px));z-index:40;background:var(--surface);color:var(--muted);border:1px solid var(--border-strong);box-shadow:var(--shadow-md);border-radius:999px;align-items:center;gap:8px;padding:8px 8px 8px 16px;font-size:13.5px;font-weight:550;animation:.25s cubic-bezier(.2,.8,.2,1) banner-in;display:flex;position:fixed;transform:translate(-50%)}.rate-toast .link{color:var(--primary);min-height:32px}@media (prefers-reduced-motion:reduce){.rate-toast{animation:none}}.update-banner{left:50%;bottom:calc(16px + env(safe-area-inset-bottom,0px));z-index:50;background:var(--surface);width:min(100% - 24px,420px);color:var(--text);border:1px solid var(--border-strong);border-radius:var(--radius);box-shadow:var(--shadow-md);justify-content:space-between;align-items:center;gap:12px;padding:12px 14px 12px 18px;font-size:14.5px;font-weight:550;animation:.3s cubic-bezier(.2,.8,.2,1) banner-in;display:flex;position:fixed;transform:translate(-50%)}.update-banner-actions{align-items:center;gap:6px;display:flex}.update-banner .btn{padding:7px 14px}@keyframes banner-in{0%{opacity:0;transform:translate(-50%,16px)}to{opacity:1;transform:translate(-50%)}}@media (prefers-reduced-motion:reduce){.update-banner{animation:none}}.crash{flex-direction:column;gap:12px;padding-top:40px;display:flex}.crash h1{font-size:26px}.crash-detail{background:var(--surface-2);border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--muted);white-space:pre-wrap;padding:12px;font-size:13px;overflow-x:auto}.toolbar{flex-wrap:wrap;gap:8px;margin-bottom:20px;display:flex}.note-form{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow-sm);flex-direction:column;gap:10px;margin-bottom:18px;padding:18px;display:flex}.key-field{align-items:center;gap:8px;width:100%;display:flex}.key-field input{flex:1}.legend{align-items:center;gap:10px;margin-top:4px;display:flex}.field{color:var(--muted);flex-direction:column;gap:5px;font-size:13px;font-weight:550;display:flex}.field input{font-size:16px}.accent-field{align-items:flex-end;gap:8px;display:flex}.accent-field .field,.accent-field input{flex:1}.accent-preview{color:var(--primary);padding:6px 2px;font-size:20px}.form-actions{flex-wrap:wrap;gap:8px;margin-top:4px;display:flex}.search-wrap{margin-bottom:14px;position:relative}.search{width:100%;padding-right:44px}.search-clear{width:40px;height:40px;color:var(--faint);cursor:pointer;background:0 0;border:none;border-radius:50%;font-size:15px;position:absolute;top:50%;right:2px;transform:translateY(-50%)}@media (hover:hover){.search-clear:hover{color:var(--text)}}.search-clear:active{color:var(--text)}.search-clear:focus-visible{outline:2px solid var(--primary);outline-offset:-4px}.note-list{padding:0;list-style:none}.note-row{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-sm);align-items:center;gap:12px;margin-bottom:7px;padding:12px 15px;transition:border-color .15s,background .15s;display:flex}@media (hover:hover){.note-row:hover{border-color:var(--border-strong);background:var(--surface-2)}}.note-text{flex-wrap:wrap;flex:1;align-items:baseline;gap:12px;display:flex}.note-text b{font-size:15.5px;font-weight:600}.reading-inline{color:var(--primary);font-size:13.5px;font-weight:550}.note-row .link{align-items:center;min-height:44px;display:inline-flex}.link{color:var(--muted);cursor:pointer;background:0 0;border:none;border-radius:6px;padding:4px 6px;font-size:13.5px;font-weight:550;transition:color .15s,background .15s}@media (hover:hover){.link:hover{color:var(--primary);background:var(--primary-weak)}}.link.danger{color:var(--faint)}@media (hover:hover){.link.danger:hover{color:var(--danger);background:color-mix(in srgb, var(--danger) 12%, transparent)}}.hint{color:var(--faint);margin:10px 0 24px;font-size:13px}.deck-settings-details{margin-bottom:16px}.deck-settings-details summary{cursor:pointer;-webkit-user-select:none;user-select:none;min-height:44px;color:var(--muted);align-items:center;font-size:14.5px;font-weight:600;display:flex}.deck-settings-details summary:before{content:"▸";color:var(--faint);margin-right:7px}.deck-settings-details[open] summary:before{content:"▾"}.deck-settings-details[open] summary{margin-bottom:10px}.deck-settings{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow-sm);flex-direction:column;gap:14px;padding:18px;display:flex}.deck-settings label{justify-content:space-between;align-items:center;gap:8px;display:flex}.notice{background:var(--primary-weak);border:1px solid color-mix(in srgb, var(--primary) 28%, transparent);border-radius:var(--radius-sm);flex-wrap:wrap;align-items:center;gap:2px 10px;margin-bottom:16px;padding:10px 14px;font-size:13.5px;display:flex}.notice .link{color:var(--primary);padding:2px 6px}.guide-lead{color:var(--muted);margin:-10px 0 8px}.guide-steps{flex-direction:column;gap:8px;margin:0 0 0 22px;display:flex}ul.guide-steps{list-style:outside}.guide-rates{flex-direction:column;gap:9px;padding:0;list-style:none;display:flex}.guide-rates li{align-items:center;gap:10px;display:flex}.rate-chip{color:#fff;border-radius:999px;flex-shrink:0;justify-content:center;align-items:center;min-width:52px;padding:3px 10px;font-size:13px;font-weight:550;display:inline-flex}.kbd-table{border-collapse:collapse;font-size:14px}.kbd-table td{padding:4px 14px 4px 0}kbd{background:var(--surface-2);border:1px solid var(--border-strong);border-bottom-width:2px;border-radius:5px;padding:1px 7px;font-family:ui-monospace,SFMono-Regular,monospace;font-size:12.5px}@media (hover:none){.kbd-only{display:none}}.template-card{border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--surface-2);align-items:center;gap:12px;padding:14px 16px;display:flex}.template-info{flex:1;min-width:0}.template-info .hint{margin:2px 0 0}.template-card .btn{flex-shrink:0}.share-card{background:var(--surface);border-radius:var(--radius);box-shadow:var(--shadow-sm);margin-bottom:18px}.share-card>.hint,.share-card>.err{margin:0}.tabs{gap:6px;margin-bottom:18px;display:flex}.tab{color:var(--muted);background:var(--surface-2);border:1px solid var(--border);border-radius:var(--radius-sm);cursor:pointer;flex:1;padding:9px 12px;font-family:inherit;font-size:14px;font-weight:600}.tab.active{color:var(--primary);background:var(--primary-weak);border-color:var(--primary)}.import-form,.settings-block{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow-sm);flex-direction:column;gap:14px;margin-bottom:20px;padding:18px;display:flex}.import-form label{white-space:nowrap;align-items:center;gap:8px;display:flex}.import-form label select{flex:1;min-width:0}.settings-block label{flex-direction:column;align-items:flex-start;gap:8px;display:flex}input[type=file]{max-width:100%;color:var(--muted);background:0 0;border:none;padding:0;font-size:14px}input[type=file]::file-selector-button{border:1px solid var(--border-strong);border-radius:var(--radius-sm);background:var(--surface);color:var(--text);cursor:pointer;margin-right:12px;padding:8px 15px;font-family:inherit;font-size:14px;font-weight:550;transition:background .15s,border-color .15s}@media (hover:hover){input[type=file]::file-selector-button:hover{background:var(--surface-2);border-color:var(--muted)}}.mapping{flex-wrap:wrap;gap:12px;display:flex}.preview{border-collapse:collapse;border-radius:var(--radius-sm);width:100%;font-size:14px;overflow:hidden}.preview th,.preview td{border:1px solid var(--border);text-align:left;padding:8px 10px}.preview th{background:var(--surface-2);color:var(--muted);font-weight:600}.summary{background:var(--good-weak);border:1px solid color-mix(in srgb, var(--good) 25%, transparent);border-radius:var(--radius-sm);padding:14px}.summary ul{max-height:200px;margin:8px 0 0 20px;overflow-y:auto}.stat-row{gap:10px;margin-bottom:4px;display:flex}.stat-tile{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow-sm);flex-direction:column;flex:1;align-items:center;gap:2px;padding:14px 8px;display:flex}.stat-tile b{font-variant-numeric:tabular-nums;letter-spacing:-.02em;font-size:24px;font-weight:700}.stat-tile span{color:var(--faint);font-size:12.5px;font-weight:550}.heatmap{justify-content:center;gap:3px;padding:4px 0;display:flex;overflow-x:auto}.heat-week{flex-direction:column;gap:3px;display:flex}.heat-month{width:12px;height:13px;color:var(--faint);white-space:nowrap;font-size:10px;line-height:1.2;overflow:visible}.heat-cell{background:var(--surface-2);width:12px;height:12px;box-shadow:inset 0 0 0 1px color-mix(in srgb, var(--border) 60%, transparent);border-radius:3px}.heat-cell.pad{visibility:hidden}.heat-legend{color:var(--faint);justify-content:flex-end;align-items:center;gap:4px;padding:8px 14px 0 0;font-size:12px;display:flex}.done-stats{color:var(--muted)}.done-stats b{font-variant-numeric:tabular-nums}.chart-block{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow-sm);margin-bottom:20px;padding:18px 10px}.recharts-default-tooltip{border-radius:var(--radius-sm);box-shadow:var(--shadow-md);background:var(--surface)!important;border-color:var(--border-strong)!important}.recharts-tooltip-label{color:var(--muted)!important}.recharts-default-tooltip .recharts-tooltip-item{color:var(--text)!important}.recharts-tooltip-cursor{fill:color-mix(in srgb, var(--text) 8%, transparent)}.recharts-cartesian-axis-tick text{fill:var(--faint)}.state-dist{align-items:center;gap:20px;padding:18px;display:flex}.dist-legend{flex-direction:column;gap:10px;padding:0;list-style:none;display:flex}.dist-legend .dot{border-radius:50%;width:10px;height:10px;margin-right:8px;display:inline-block}