:root{--bg:#F0EBE3;--surface:#fff;--surface-soft:#FAF6EF;--ink:#2C1A0E;--muted:#6B5A47;--line:#E3D8C8;--orange:#D85A30;--control:#BF4823;--accent:#A83B17;--ok:#26733D;--bad:#AE3029;--jp:'Klee One',serif;--display:Unbounded,sans-serif}
*{box-sizing:border-box;letter-spacing:0}body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.65 Inter,system-ui,sans-serif}button,input,select{font:inherit}button,select{max-width:100%}button{cursor:pointer;border:1px solid var(--line);border-radius:8px;background:white;color:var(--ink);padding:9px 15px;line-height:1.4}button:hover:not(:disabled){border-color:var(--orange)}button:disabled{cursor:default;color:var(--muted)}button.primary{color:white;background:var(--orange);border-color:var(--orange);font-weight:600}button.primary:disabled{opacity:.55}button.text-button{border-color:transparent;background:transparent;padding-inline:8px}a{color:var(--accent)}:focus-visible{outline:3px solid #2E6FA8;outline-offset:3px}[hidden]{display:none!important}.wrap{max-width:1040px;margin:auto;padding:22px 20px 40px}.crumbs{font-size:13px;color:var(--muted)}.crumbs a{text-decoration:none}.top{display:flex;align-items:center;justify-content:space-between;gap:16px;border-bottom:2px solid var(--line);margin:16px 0 12px;padding-bottom:12px}h1,h2,h3{font-family:var(--display);line-height:1.45;text-wrap:balance}h1{font-size:30px;margin:0}h1 .jp{font-size:34px;color:var(--orange);margin-left:10px}h2{font-size:21px;margin:24px 0 12px}h3{font-size:16px;margin:24px 0 12px}p{margin:8px 0 16px;max-width:74ch}.lead{color:var(--muted);font-size:15px}.jp{font-family:var(--jp)}ruby{ruby-position:over;ruby-align:center;white-space:nowrap}rt{font:400 .46em/1 var(--jp);color:#744630}body.no-ruby rt{visibility:hidden}.ruby-control{font-size:13px;white-space:nowrap;display:flex;align-items:center;gap:7px}.ruby-control input{accent-color:var(--orange);width:17px;height:17px}.tabs{display:flex;flex-wrap:wrap;gap:5px;margin:20px 0 28px;padding:5px;background:var(--surface-soft);border:1px solid var(--line);border-radius:14px;width:fit-content;max-width:100%}.tabs button{font-size:14px;font-weight:600;background:transparent;border-color:transparent;border-radius:9px;transition:background-color .15s,color .15s}.tabs [aria-selected=true],.segmented [aria-pressed=true]{color:white;background:var(--orange);border-color:var(--orange)}.tabs [aria-selected=true]:hover{color:white}.segmented{display:flex;gap:4px;flex-wrap:wrap;margin-bottom:18px}.segmented button{font-size:14px}.cgrid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}.color-card{text-align:left;padding:0;overflow:hidden;display:block}.color-card .swatch{height:64px;display:block;border-bottom:1px solid #ddd}.color-card .body{display:block;padding:13px 14px}.color-card .word{font:600 25px/1.85 var(--jp);display:block}.color-card .meaning{display:block;font-size:14px;line-height:1.4;min-height:2.8em}.color-card .use{font:16px/1.8 var(--jp);display:block;color:var(--accent);border-top:1px solid var(--line);margin-top:8px;padding-top:8px}.color-card .use small{font:12px Inter,sans-serif;color:var(--muted)}.prose{padding-top:16px;margin-top:24px;border-top:1px solid var(--line)}.prose.first{margin-top:0;border:0;padding:0}.prose h2:first-child{margin-top:0}.examples{display:grid;grid-template-columns:1fr 1fr;gap:20px}.example{font-size:26px;line-height:2;margin:12px 0}.table-scroll{overflow-x:auto;margin:18px 0;background:var(--surface);border:1px solid var(--line);border-radius:14px}.pair-table{border-collapse:collapse;width:100%;font-size:14px}.pair-table td,.pair-table th{text-align:left;border-bottom:1px solid var(--line);padding:10px}.pair-table .jp{font-size:21px;line-height:1.9}.pair-table th{background:var(--surface-soft);color:var(--muted);font-size:12px;padding-block:12px}.pair-table tbody tr:last-child td{border-bottom:0}.grammar-models{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;margin-top:28px}.grammar-models article{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:16px}.grammar-models article h3{margin-top:0}.grammar-models article:first-child .model-label{color:var(--ok)}.grammar-models article:nth-child(2) .model-label{color:#2E6FA8}.grammar-models article:nth-child(3) .model-label{color:var(--accent)}.grammar-models p{font-size:14px}.grammar-models .formula{font-size:19px;line-height:2}.grammar-models .example{font-size:24px}.model-label{display:block;font:12px/1.4 Inter,sans-serif;color:var(--muted);margin-bottom:7px}details{border-block:1px solid var(--line);padding:14px 0;margin-top:20px}summary{font-weight:600;cursor:pointer}details p:first-of-type{margin-top:18px}.sgrid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.sample-card{background:white;border:1px solid var(--line);border-radius:8px;overflow:hidden}.sample-card .swatch{height:55px;display:flex;border-bottom:1px solid #ddd}.sample-card .swatch span{flex:1}.sample-card .body{padding:15px}.sample-card h3{font:600 25px/1.9 var(--jp);margin:0}.sample-card p{font-size:14px;margin:8px 0}.sample-card .example{font:21px/1.9 var(--jp)}.sample-card .note{color:var(--muted);font-size:13px}.idioms{display:grid;grid-template-columns:1fr 1fr;gap:12px 28px}.idiom{padding:14px 16px;background:var(--surface);border:1px solid var(--line);border-radius:12px}.idiom .jp{font-size:25px;line-height:2}.idiom p{font-size:14px}.related{margin-top:26px;padding-top:20px;border-top:1px solid var(--line)}.related-title{font:700 11.5px Inter,system-ui,sans-serif;text-transform:uppercase;color:var(--muted);margin-bottom:9px}.related-links{display:flex;flex-wrap:wrap;gap:8px}.related-links a{display:inline-flex;align-items:center;gap:8px;min-height:50px;padding:9px 13px;background:var(--surface);border:1px solid var(--line);border-radius:12px;color:var(--ink);font:600 14px/1.5 Inter,system-ui,sans-serif;text-decoration:none;transition:border-color .15s}.related-links a:hover{border-color:var(--orange)}.related-links .jp{font-size:18px;color:var(--accent);line-height:1.8}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.muted{color:var(--muted);font-size:13px}
.training-box{padding:24px;background:white;border:2px solid var(--orange);border-radius:8px}.training-meta{display:flex;justify-content:space-between;align-items:center;gap:12px;font-size:13px;color:var(--muted)}.training-meta button{font-size:13px}.q-body{text-align:center;min-height:200px;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:25px 0 14px}.q-body .prompt{font:34px/2 var(--jp);margin:12px 0;overflow-wrap:anywhere}.q-body p{margin:4px 0}.q-body .swatch{width:240px;height:140px;border:1px solid #aaa;border-radius:8px}.q-body .gap{display:inline-block;min-width:50px;padding-inline:7px;color:var(--accent);border-bottom:2px solid var(--orange)}.options{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px}.option{font:26px/2 var(--jp);min-height:82px;padding:14px 8px;overflow-wrap:anywhere}.option.correct{background:#E7F1E9;border:2px solid var(--ok);color:#19582C}.option.wrong{background:#FBE9E7;border:2px solid var(--bad);color:#90231E}.option small{font:12px/1.4 Inter,sans-serif;display:block}.feedback{line-height:1.9;font-size:15px;margin:18px 0 12px;min-height:64px;max-width:74ch}.feedback:empty{min-height:12px;margin:12px 0}.feedback .jp{font-size:20px}.answer-translation{font:500 16px/1.65 Inter,system-ui,sans-serif}.feedback b{color:var(--ink)}.actions{display:flex;gap:9px;flex-wrap:wrap;align-items:center;margin-top:14px}.actions button{font-size:14px}.paint-controls{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:12px}.paint-controls label{font-size:13px;display:flex;align-items:center;gap:10px}.paint-controls select{padding:8px 12px;border:1px solid var(--line);border-radius:8px;background:white}.paint-controls .segmented{margin:0}
.paint-workbar{position:sticky;top:0;z-index:3;background:white;border-bottom:1px solid var(--line);padding-top:6px}
.paint-task{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:18px;border-top:1px solid var(--line);padding:12px 0 8px}.paint-task .example{margin:6px 0;font-size:27px;min-height:52px}.paint-task #paint-translate{font-size:12px;padding:2px 0}.paint-task #paint-translation{font-size:14px;color:var(--muted)}.paint-task-actions{display:flex;flex-direction:column;align-items:stretch;gap:8px}.paint-task-actions button{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-size:14px}.paint-task-actions .primary{min-height:46px;font-weight:700}.paint-task-actions .text-button{font-size:12px}
.paint-tools{display:flex;align-items:center;gap:16px;padding:12px 0}.paint-palette{display:flex;gap:7px;flex-wrap:wrap;flex:1}.paint-swatch{padding:5px;width:38px;height:38px;position:relative;border:1px solid #888;border-radius:7px;background:var(--paint)}.paint-swatch[aria-pressed=true]{outline:2px solid var(--ink);outline-offset:2px}.paint-swatch[aria-pressed=true]::after{content:'✓';position:absolute;inset:6px;background:white;color:var(--ink);border-radius:50%;font:700 15px/24px Inter,sans-serif;text-align:center}.paint-swatch.eraser{background:var(--surface-soft);display:grid;place-items:center}.paint-utilities{display:flex;gap:7px}.icon-button{width:38px;height:38px;padding:8px;display:grid;place-items:center}.icon-button[aria-pressed=true]{color:var(--accent);border-color:var(--orange)}.painting button svg{flex:none;width:19px;height:19px;vertical-align:middle}
.paint-stage{width:100%;aspect-ratio:1200/675;overflow:auto;position:relative;line-height:0;background:white;margin-top:10px;overscroll-behavior-x:contain}.paint-art{position:relative;width:100%;min-width:100%}.paint-art canvas{width:100%;height:auto;display:block}.paint-art #paint-overlay{position:absolute;inset:0;pointer-events:none}.paint-object{position:absolute;pointer-events:none;padding:0;border:0;border-radius:0;background:transparent;outline:none;filter:none}.paint-object:focus-visible{outline:3px solid #206CA0;outline-offset:2px}.paint-stage.is-zoomed{height:500px;max-height:55vh;aspect-ratio:auto}.paint-stage.is-zoomed .paint-art{width:max(200%,900px)}.painting .feedback{min-height:0;margin:0;font-size:14px;line-height:1.55;max-width:none}.painting .feedback:not(:empty){padding:8px 12px;margin:4px 0;border-left:3px solid var(--line);background:var(--surface-soft)}.painting .feedback[data-status=correct]{border-color:var(--ok);background:#E7F1E9;color:#19582C}.painting .feedback[data-status=incorrect]{border-color:var(--bad);background:#FBE9E7;color:#90231E}.painting .paint-footer{border-top:1px solid var(--line);padding-top:12px;justify-content:space-between}.paint-footer button{display:inline-flex;align-items:center;gap:7px}.paint-footer svg{color:var(--muted)}
dialog{border:0;border-radius:8px;padding:0;width:min(480px,calc(100% - 24px));max-height:calc(100dvh - 32px);overflow:auto;color:var(--ink);background:white}dialog::backdrop{background:#2C1A0E77}#color-band{height:85px;border-bottom:1px solid var(--line)}.dialog-close{position:absolute;right:12px;top:12px;width:36px;height:36px;padding:0;font-size:25px;line-height:1;border:1px solid #ccc}.dialog-content{padding:22px}.dialog-content h2{font:600 35px/1.8 var(--jp);margin:0}.dialog-content .example{font-size:25px}.dialog-content .note{border-top:1px solid var(--line);padding-top:14px;font-size:14px}.dialog-content .forms{font:22px/2 var(--jp);margin:10px 0}.dialog-content .forms small{font:12px Inter,sans-serif;color:var(--muted)}
@media(max-width:780px){.cgrid{grid-template-columns:repeat(3,minmax(0,1fr))}.grammar-models{grid-template-columns:1fr;gap:10px}.grammar-models article{padding:16px}.grammar-models h3{margin-top:12px}.sgrid{grid-template-columns:repeat(2,minmax(0,1fr))}.training-box{padding:18px}.options{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:480px){.wrap{padding:16px 12px 30px}h1{font-size:24px}h1 .jp{font-size:27px}h2{font-size:18px}.ruby-control{font-size:11px}.top{gap:8px}.tabs{gap:2px;margin:16px 0 22px}.tabs button{font-size:12px;padding:8px}.cgrid{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.color-card .body{padding:10px}.color-card .word{font-size:23px}.color-card .use{font-size:15px}.color-card .swatch{height:49px}.color-card .meaning{font-size:13px}.sgrid,.idioms,.examples{grid-template-columns:1fr}.example{font-size:23px}.pair-table th,.pair-table td{padding:8px 4px}.pair-table .jp{font-size:17px}.training-box{padding:12px}.training-meta{font-size:12px;gap:4px}.q-body{min-height:180px}.q-body .prompt{font-size:27px}.option{font-size:23px;min-height:75px}.segmented button{font-size:12px;padding:8px}.paint-task .example{font-size:22px}.paint-swatch{width:35px;height:35px}.paint-swatch[aria-pressed=true]::after{inset:4px;line-height:23px}.paint-palette{gap:7px}.paint-controls label{width:100%}.actions{gap:7px}.actions button{font-size:12px;padding:9px 10px}.feedback{font-size:14px}}
button.primary,.tabs [aria-selected=true],.segmented [aria-pressed=true]{background:var(--control);border-color:var(--control)}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}

@media(max-width:600px){.paint-task{grid-template-columns:minmax(0,1fr);gap:4px;padding-top:9px}.paint-task .example{font-size:23px;min-height:40px;line-height:1.8}.paint-question{text-align:center}.paint-task-actions{flex-direction:row;flex-wrap:wrap;justify-content:center;gap:4px 10px}.paint-task-actions .primary{font-size:13px;min-height:40px}.paint-task-actions .text-button{font-size:11px}.paint-tools{flex-wrap:wrap;justify-content:center;gap:7px;padding:10px 0}.paint-palette,.paint-utilities{display:contents}.paint-swatch,.icon-button{width:35px;height:35px;flex:none}.painting .paint-footer{gap:8px}.painting .paint-footer button{font-size:11px}.painting .feedback{font-size:12px}.paint-workbar{padding-top:2px}.paint-task #paint-translation{font-size:12px}}