:root{color-scheme:light dark;--bg: light-dark(#faf9f7, #0f1318);--bg-elevated: light-dark(#ffffff, #181d24);--bg-subtle: light-dark(#f3f1ee, #20262e);--bg-inset: light-dark(#eae6e1, #29303a);--text: light-dark(#222d39, #edebe8);--text-muted: light-dark(#4f5d70, #a0a6ae);--text-faint: light-dark(#66727f, #868d97);--border: light-dark(#e6e1db, #2a313a);--border-strong: light-dark(#d2cac1, #3c4550);--accent: light-dark(#15855f, #2cc594);--accent-hover: light-dark(#0f6e4e, #56d4ab);--accent-soft: light-dark(#e6f4ee, #173a31);--accent-text: light-dark(#ffffff, #06140f);--accent-ring: light-dark(rgb(21 133 95 / 16%), rgb(44 197 148 / 22%));--brand: light-dark(#0057b8, #5c9be0);--brand-soft: light-dark(#e6eef8, #1e2f44);--success: light-dark(#3d7a3d, #86c28f);--success-soft: light-dark(#e9f3e7, #1b3223);--success-border: light-dark(#a9d0a5, #3a6a45);--danger: light-dark(#b3361f, #e0877b);--danger-soft: light-dark(#fcebe7, #3a1f1c);--danger-border: light-dark(#eba99c, #74392f);--warning: light-dark(#94620b, #e0c77a);--warning-soft: light-dark(#fdf3dc, #342a10);--warning-border: light-dark(#ebd08c, #6d5a22);--star: light-dark(#eaa416, #f2c14e);--radius-sm: 8px;--radius: 12px;--radius-lg: 16px;--radius-pill: 999px;--shadow-sm: 0 1px 2px light-dark(rgb(34 45 57 / 6%), rgb(0 0 0 / 30%));--shadow: 0 4px 16px light-dark(rgb(34 45 57 / 8%), rgb(0 0 0 / 35%));--shadow-lg: 0 12px 32px light-dark(rgb(34 45 57 / 12%), rgb(0 0 0 / 45%));--fs-2xs: .72rem;--fs-xs: .8rem;--fs-sm: .88rem;--fs-md: 1rem;--fs-lg: 1.13rem;--fs-xl: 1.3rem;--fs-2xl: 1.6rem;--sp-1: 4px;--sp-2: 8px;--sp-3: 12px;--sp-4: 16px;--sp-5: 20px;--sp-6: 24px;--sp-7: 32px;--sp-8: 40px;--ease: cubic-bezier(.2, .8, .3, 1);--dur: .18s;--font-ui: "Montserrat", "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;--font-display: "Quicksand", var(--font-jp);--font-jp: "Montserrat", "Segoe UI", -apple-system, "Helvetica Neue", Arial, "Yu Gothic", "Hiragino Kaku Gothic ProN", "Noto Sans JP", "MS Gothic", Meiryo, var(--font-ui);--font-mono: "Cascadia Code", Consolas, "SF Mono", Menlo, monospace;--max-width: 1240px;--header-h: calc(61px + env(safe-area-inset-top)) }:root[data-theme=light]{color-scheme:light}:root[data-theme=dark]{color-scheme:dark}:root[data-theme=night]{color-scheme:light;--bg: #f1e7d5;--bg-elevated: #fbf3e3;--bg-subtle: #ece0cb;--bg-inset: #e3d5bb;--text: #2b2113;--text-muted: #66502f;--text-faint: #786243;--border: #e0cfb1;--border-strong: #c9b48f;--accent: #9a4c15;--accent-hover: #7f3d0e;--accent-soft: #f7e6cd;--accent-text: #fffaf0;--accent-ring: rgb(154 76 21 / 18%);--brand: #6e4a1c;--brand-soft: #f0e1c6;--success: #4a6b1f;--success-soft: #e7edd0;--success-border: #b5c98a;--danger: #a32e1e;--danger-soft: #f8dfd5;--danger-border: #e0a48c;--warning: #7d5b05;--warning-soft: #f4e6bd;--warning-border: #d8bc71;--star: #c07c0b;--shadow-sm: 0 1px 2px rgb(74 48 14 / 10%);--shadow: 0 4px 16px rgb(74 48 14 / 12%);--shadow-lg: 0 12px 32px rgb(74 48 14 / 18%)}*,*:before,*:after{box-sizing:border-box}*{margin:0}html{-webkit-text-size-adjust:100%;scroll-padding-top:calc(var(--header-h) + var(--sp-4))}@media(prefers-reduced-motion:no-preference){html{scroll-behavior:smooth}}body{min-height:100vh;min-height:100dvh;background:var(--bg);color:var(--text);font-family:var(--font-ui);font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased}::selection{background:var(--accent-soft);color:var(--accent)}img,svg{display:block;max-width:100%}input,button,textarea,select{font:inherit;color:inherit}button{cursor:pointer}button:disabled{cursor:not-allowed}h1,h2,h3,h4{font-family:var(--font-display);line-height:1.25;font-weight:700;text-wrap:balance;letter-spacing:-.011em}h1{font-size:var(--fs-2xl)}h2{font-size:var(--fs-xl)}h3{font-size:var(--fs-lg)}p{text-wrap:pretty}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}.container{width:100%;max-width:var(--max-width);margin-inline:auto;padding-inline:max(20px,env(safe-area-inset-left)) max(20px,env(safe-area-inset-right))}.page{padding-block:var(--sp-7) calc(64px + env(safe-area-inset-bottom))}.stack{display:flex;flex-direction:column;gap:var(--sp-4)}.stack-sm{gap:var(--sp-2)}.stack-lg{gap:var(--sp-5)}.stack-xl{gap:var(--sp-6)}.row{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.spacer{flex:1}.page-head{display:flex;flex-direction:column;gap:6px;max-width:64ch}.page-head h1{font-size:clamp(1.5rem,1.18rem + 1.4vw,2rem)}.page-head p{color:var(--text-muted)}.section-head{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.toolbar{display:flex;align-items:center;gap:var(--sp-3);flex-wrap:wrap}.filter-count{padding:1px 8px;border-radius:var(--radius-pill);background:var(--bg-inset);font-size:var(--fs-xs);font-weight:650;color:var(--text-muted);font-variant-numeric:tabular-nums}.option.is-active .filter-count{background:color-mix(in srgb,var(--accent) 16%,transparent);color:var(--accent)}.card{background:var(--bg-elevated);border:1px solid var(--border);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm)}.card-body{padding:var(--sp-5)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--sp-2);padding:9px 16px;border:1px solid var(--border-strong);border-radius:var(--radius-sm);background:var(--bg-elevated);color:var(--text);font-size:.94rem;font-weight:550;white-space:nowrap;transition:background-color var(--dur) var(--ease),border-color var(--dur) var(--ease),color var(--dur) var(--ease),box-shadow var(--dur) var(--ease),transform .06s var(--ease)}.btn:hover:not(:disabled){background:var(--bg-subtle);border-color:var(--text-faint);text-decoration:none}.btn:active:not(:disabled){transform:translateY(1px)}.btn:disabled{opacity:.5}.btn-primary{background:var(--accent);border-color:var(--accent);color:var(--accent-text);box-shadow:0 1px 2px var(--accent-ring),0 4px 12px var(--accent-ring)}.btn-primary:hover:not(:disabled){background:var(--accent-hover);border-color:var(--accent-hover);color:var(--accent-text);box-shadow:0 2px 4px var(--accent-ring),0 8px 20px var(--accent-ring)}.btn-primary:active:not(:disabled){box-shadow:0 1px 2px var(--accent-ring)}.btn-ghost{background:transparent;border-color:transparent;color:var(--text-muted)}.btn-ghost:hover:not(:disabled){background:var(--bg-subtle);border-color:transparent;color:var(--text)}.btn-danger{color:var(--danger);border-color:var(--danger-border);background:transparent}.btn-danger:hover:not(:disabled){background:var(--danger-soft);border-color:var(--danger)}.btn-lg{padding:13px 26px;font-size:1.02rem}.btn-sm{padding:5px 10px;font-size:var(--fs-sm)}.field{display:flex;flex-direction:column;gap:6px}.label{font-size:var(--fs-xs);font-weight:620;letter-spacing:.04em;text-transform:uppercase;color:var(--text-muted)}.hint{font-size:var(--fs-sm);color:var(--text-muted)}.input,.textarea,.select{width:100%;padding:10px 12px;background:var(--bg-elevated);border:1px solid var(--border-strong);border-radius:var(--radius-sm);transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease)}.input:focus,.textarea:focus,.select:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-ring)}.textarea{min-height:200px;font-family:var(--font-mono);font-size:.9rem;line-height:1.6;resize:vertical}.checkbox{display:flex;align-items:flex-start;gap:10px;cursor:pointer;padding:9px 12px;border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--bg-subtle);transition:border-color var(--dur) var(--ease),background-color var(--dur) var(--ease)}.checkbox:hover{border-color:var(--border-strong)}.checkbox:has(input:checked){border-color:color-mix(in srgb,var(--accent) 42%,var(--border));background:var(--accent-soft)}.checkbox input{margin-top:4px;accent-color:var(--accent);width:16px;height:16px;flex-shrink:0}.checkbox.is-disabled{opacity:.5;cursor:not-allowed}.checkbox.is-disabled:has(input:checked){border-color:var(--border);background:var(--bg-subtle)}.search{position:relative;display:flex;align-items:center;min-width:0}.search-icon{position:absolute;left:12px;display:grid;place-items:center;width:18px;height:18px;color:var(--text-faint);pointer-events:none}.search-icon svg{width:100%;height:100%}.search .input{padding-left:38px;padding-right:40px}.search .input::-webkit-search-cancel-button{display:none}.search-clear{position:absolute;right:7px;display:grid;place-items:center;width:26px;height:26px;padding:0;border:none;border-radius:var(--radius-pill);background:transparent;color:var(--text-faint);font-size:1rem;line-height:1;transition:background-color var(--dur) var(--ease),color var(--dur) var(--ease)}.search-clear:hover{background:var(--bg-inset);color:var(--text)}.options{display:grid;gap:var(--sp-2)}.option{display:flex;align-items:center;gap:10px;padding:11px 14px;border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--bg-subtle);text-align:left;font-weight:500;width:100%;transition:border-color var(--dur) var(--ease),background-color var(--dur) var(--ease),color var(--dur) var(--ease),box-shadow var(--dur) var(--ease)}.option:hover:not(:disabled){border-color:var(--border-strong);background:var(--bg-inset)}.option.is-active{border-color:var(--accent);background:var(--accent-soft);color:var(--accent);font-weight:620;box-shadow:0 0 0 3px var(--accent-ring)}.option:disabled{opacity:.45;cursor:not-allowed}.badge{display:inline-flex;align-items:center;gap:5px;padding:1px 8px;border:1px solid color-mix(in srgb,currentColor 18%,transparent);border-radius:6px;font-size:var(--fs-xs);font-weight:600;background:var(--bg-inset);color:var(--text-muted);white-space:nowrap;font-variant-numeric:tabular-nums}.badge-accent{background:var(--accent-soft);color:var(--accent)}.badge-success{background:var(--success-soft);color:var(--success)}.badge-danger{background:var(--danger-soft);color:var(--danger)}.badge-warning{background:var(--warning-soft);color:var(--warning)}.jp{font-family:var(--font-jp);font-feature-settings:"palt" 0}.notice{display:flex;gap:var(--sp-3);padding:14px 16px;border:1px solid var(--border);border-left-width:3px;border-radius:var(--radius);background:var(--bg-subtle);font-size:.92rem}.notice-error{border-color:var(--danger-border);border-left-color:var(--danger);background:var(--danger-soft);color:var(--danger)}.notice-warning{border-color:var(--warning-border);border-left-color:var(--warning);background:var(--warning-soft);color:var(--warning)}.notice-success{border-color:var(--success-border);border-left-color:var(--success);background:var(--success-soft);color:var(--success)}.empty-state{display:flex;flex-direction:column;align-items:center;gap:6px;padding:var(--sp-8) var(--sp-5);border:1px dashed var(--border-strong);border-radius:var(--radius-lg);background:color-mix(in srgb,var(--bg-subtle) 55%,transparent);text-align:center}.empty-state-icon{font-size:1.7rem;line-height:1;opacity:.55}.empty-state-title{font-weight:620}.empty-state-text{max-width:46ch;color:var(--text-muted);font-size:var(--fs-sm)}.skeleton{border-radius:var(--radius-sm);background:linear-gradient(90deg,var(--bg-subtle) 25%,var(--bg-inset) 37%,var(--bg-subtle) 63%);background-size:400% 100%;animation:skeleton-shimmer 1.4s ease-in-out infinite}@keyframes skeleton-shimmer{0%{background-position:100% 50%}to{background-position:0 50%}}.options-2{grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}.setup{gap:var(--sp-4)}@media(min-width:720px){.setup>.field{display:grid;grid-template-columns:9.5rem minmax(0,1fr);grid-template-rows:auto auto auto;gap:0 var(--sp-4);align-items:start}.setup>.field>.label{grid-column:1;grid-row:1 / -1;padding-top:8px}.setup>.field:not(:has(>.options))>.label{padding-top:1px}.setup>.field>:not(.label){grid-column:2}.setup>.field>.label~*~*{margin-top:6px}}.setup>.field>.hint{font-size:var(--fs-xs);color:var(--text-faint)}.setup .options{display:flex;flex-wrap:wrap;gap:6px}.setup .option{width:auto;padding:6px 14px;border-radius:var(--radius-pill);background:transparent;font-size:var(--fs-sm)}.setup .option.is-active{box-shadow:none}.setup .options:has(>.option-stacked){display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr))}.setup .option-stacked{width:100%;padding:9px 12px;border-radius:var(--radius-sm)}.setup .options:has(>.checkbox){display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:var(--sp-2) var(--sp-5)}.setup .checkbox,.setup .checkbox:has(input:checked),.setup .checkbox.is-disabled:has(input:checked){padding:2px 0;border:0;background:none}.setup .checkbox strong{font-size:var(--fs-sm)}.setup .checkbox .hint{font-size:var(--fs-xs);color:var(--text-faint)}.setup .checkbox input{appearance:none;width:30px;height:18px;margin-top:2px;border-radius:var(--radius-pill);background:radial-gradient(circle,#fff 0 6px,transparent 6.5px) 0 0 / 18px 18px no-repeat,var(--border-strong);cursor:inherit;transition:background-position var(--dur) var(--ease),background-color var(--dur) var(--ease)}.setup .checkbox input:checked{background-color:var(--accent);background-position:12px 0}.checkbox strong{display:block;font-weight:600;font-size:.94rem}.checkbox .hint{display:block;margin-top:1px}.option-stacked{flex-direction:column;align-items:flex-start;gap:3px}.option-stacked strong{font-weight:620}.option-example{font-size:.82rem;font-weight:450;opacity:.75}.start-bar{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;padding-top:16px;border-top:1px solid var(--border)}.start-bar .btn{flex-shrink:0}.start-bar>.small{flex:1 1 0;min-width:0}.filter-row{flex-wrap:nowrap;align-items:stretch}.search-input{flex:1;min-width:0}.filter-check{flex-shrink:0;align-items:center;white-space:nowrap}.filter-check input{margin-top:0}.star-btn{border:none;background:none;padding:2px 4px;font-size:1.15rem;line-height:1;color:var(--text-faint);border-radius:5px;transition:color .15s,transform .1s}.star-btn.is-on{color:var(--star)}@media(hover:hover){.star-btn:hover{color:var(--star);transform:scale(1.15)}}@media(hover:none){.star-btn{padding:8px 10px;font-size:1.35rem}}.word-table{width:100%;table-layout:fixed;border-collapse:collapse;font-size:.94rem}.word-table th{padding:9px 12px;background:var(--bg-subtle);border-bottom:1px solid var(--border-strong);text-align:left;font-size:var(--fs-xs);font-weight:650;letter-spacing:.04em;text-transform:uppercase;color:var(--text-muted)}.word-table td{padding:10px 12px;border-bottom:1px solid var(--border);vertical-align:top}.word-table tbody tr:nth-child(2n):not(.is-favorite){background:color-mix(in srgb,var(--bg-subtle) 45%,transparent)}@media(hover:hover){.word-table tbody tr:hover:not(.is-favorite){background:var(--bg-subtle)}}.word-table tr.is-favorite{background:color-mix(in srgb,var(--warning-soft) 45%,transparent)}.col-star{width:44px;text-align:center}.col-level .badge{font-size:.72rem;padding:1px 7px}.back-link{font-size:var(--fs-sm);color:var(--text-muted);width:fit-content;transition:color var(--dur) var(--ease)}.back-link:hover{color:var(--accent)}.lesson-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(270px,1fr));gap:14px}.lesson-card{position:relative;display:flex;flex-direction:column;gap:10px;padding:18px;color:var(--text);overflow:hidden;transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease),transform var(--dur) var(--ease)}.lesson-card:before{content:"";position:absolute;inset:0 auto 0 0;width:3px;background:var(--accent);transform:scaleY(0);transform-origin:center;transition:transform var(--dur) var(--ease)}@media(hover:hover){.lesson-card:hover{border-color:color-mix(in srgb,var(--accent) 45%,var(--border));box-shadow:var(--shadow);transform:translateY(-2px);text-decoration:none}.lesson-card:hover:before{transform:scaleY(1)}.lesson-card:hover .lesson-go{transform:translate(3px)}}.lesson-card:focus-visible{border-color:var(--accent)}.lesson-card-top{display:flex;align-items:flex-start;justify-content:space-between;gap:10px}.lesson-name{font-size:1.05rem;font-weight:640;font-family:var(--font-jp)}.lesson-desc{flex:1}.lesson-card-bottom{display:flex;align-items:center;gap:var(--sp-2);flex-wrap:wrap;margin-top:auto;padding-top:var(--sp-1)}.lesson-go{color:var(--accent);font-weight:700;transition:transform var(--dur) var(--ease)}.skeleton-wrap{display:flex;flex-direction:column;gap:14px}.skeleton-bar{width:220px;height:20px}.skeleton-card{height:132px;border-radius:var(--radius-lg)}.toolbar .search{flex:1 1 360px}.toolbar-counts{gap:6px;flex-shrink:0}.level-options{grid-template-columns:repeat(auto-fit,minmax(190px,1fr))}.level-tabs{display:flex;gap:var(--sp-2);flex-wrap:wrap}.level-tab{display:flex;flex-direction:column;align-items:flex-start;gap:1px;padding:9px 18px;border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--bg-subtle);transition:border-color var(--dur) var(--ease),background-color var(--dur) var(--ease),color var(--dur) var(--ease),box-shadow var(--dur) var(--ease)}.level-tab:hover:not(.is-active){border-color:var(--border-strong);background:var(--bg-inset)}.level-tab strong{font-size:var(--fs-md);font-weight:700;letter-spacing:.02em}.level-tab-count{font-size:var(--fs-2xs);color:var(--text-muted)}.level-tab.is-active{border-color:var(--accent);background:var(--accent-soft);color:var(--accent);box-shadow:0 0 0 3px var(--accent-ring)}.level-tab.is-active .level-tab-count{color:var(--accent)}.detail-skeleton{display:flex;flex-direction:column;gap:14px}.sk-pill{width:110px;height:22px;border-radius:999px}@keyframes rise-in{0%{opacity:0;transform:translateY(8px)}}@keyframes pop-in{0%{opacity:0;transform:translateY(10px) scale(.985)}}@keyframes fade-in{0%{opacity:0}}.page{animation:rise-in .26s var(--ease) backwards}.practice-page{animation:fade-in .26s var(--ease) backwards}.lesson-card{animation:pop-in .28s var(--ease) backwards}.lesson-card:nth-child(2){animation-delay:.05s}.lesson-card:nth-child(3){animation-delay:.1s}.lesson-card:nth-child(4){animation-delay:.15s}.lesson-card:nth-child(n+5){animation-delay:.2s}.kanji-cell{animation:fade-in .24s var(--ease) backwards}.kanji-cell:nth-child(n+5){animation-delay:.04s}.kanji-cell:nth-child(n+13){animation-delay:.08s}.kanji-cell:nth-child(n+25){animation-delay:.12s}.point-card{animation:rise-in .26s var(--ease) backwards}.empty-state{animation:fade-in .3s var(--ease) backwards}.notice{animation:rise-in .22s var(--ease) backwards}.question-card{animation:rise-in .24s var(--ease) backwards}.choice{animation:fade-in .22s var(--ease) backwards}.choice:nth-child(2){animation-delay:.04s}.choice:nth-child(3){animation-delay:.08s}.choice:nth-child(4){animation-delay:.12s}@keyframes score-pop{0%{opacity:0;transform:scale(.82)}70%{transform:scale(1.04)}to{opacity:1;transform:scale(1)}}.score-main{animation:score-pop .42s var(--ease) backwards}.result-item{animation:rise-in .24s var(--ease) backwards}.result-item:nth-child(2){animation-delay:.04s}.result-item:nth-child(3){animation-delay:.08s}.result-item:nth-child(4){animation-delay:.12s}.muted{color:var(--text-muted)}.faint{color:var(--text-faint)}.small{font-size:var(--fs-sm)}.mono{font-family:var(--font-mono)}.tnum{font-variant-numeric:tabular-nums}.truncate{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.clamp-2{display:-webkit-box;-webkit-box-orient:vertical;-webkit-line-clamp:2;line-clamp:2;overflow:hidden}.sr-only{position:absolute;width:1px;height:1px;padding:0;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}.scroll-x{overflow-x:auto;overscroll-behavior-x:contain;-webkit-overflow-scrolling:touch}kbd{display:inline-block;padding:1px 7px;border:1px solid var(--border-strong);border-bottom-width:2px;border-radius:5px;background:var(--bg-subtle);font-family:var(--font-mono);font-size:.8em;line-height:1.5;color:var(--text-muted)}@media(max-width:640px){body{font-size:15px}.container{padding-inline:max(14px,env(safe-area-inset-left)) max(14px,env(safe-area-inset-right))}.card-body{padding:var(--sp-4)}.page{padding-block:var(--sp-5) calc(72px + env(safe-area-inset-bottom))}.input,.textarea,.select{font-size:16px}}@media(hover:none){.btn:not(.btn-sm),.option{min-height:44px}.btn-sm{min-height:36px}.search-clear{width:32px;height:32px}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.01ms!important;animation-delay:0ms!important;transition-duration:.01ms!important}.skeleton{animation:none!important;background:var(--bg-subtle)}}