.intro{margin-top:24px}.controls{padding:22px;border:1px solid var(--line);background:#fffdf8;border-radius:12px;margin-bottom:28px}.controls>label{display:block;font-weight:700;margin-bottom:8px}.controls input[type=text],.controls input[name=characters]{width:100%;padding:12px;font-size:24px;border:1px solid var(--line);border-radius:6px;box-sizing:border-box}.controls p{font-size:14px;color:var(--ink-soft)}.options,.actions{display:flex;gap:16px;flex-wrap:wrap;align-items:center;margin:16px 0}.options label{display:flex;align-items:center;gap:8px}select,button{font:inherit;padding:10px;border:1px solid var(--line);border-radius:6px;background:#fffdf8;color:var(--ink)}button{cursor:pointer}button[type=submit],#print{background:var(--cinnabar);color:white;border-color:var(--cinnabar)}a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid var(--jade);outline-offset:3px}.paper{background:white;padding:24px;border:1px solid var(--line);box-shadow:0 8px 30px #26211b10;overflow:hidden}.sheet-header,.student-line{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-bottom:16px;font-size:14px}.practice-row{display:grid;grid-template-columns:repeat(8,minmax(0,1fr));break-inside:avoid}.practice-cell{position:relative;aspect-ratio:1;display:grid;place-items:center;container-type:inline-size}.practice-cell svg{position:absolute;inset:0;width:100%;height:100%;fill:none;stroke:#b7aaa0;stroke-width:.6}.practice-cell .border{stroke:#8f7b6e;stroke-width:1}.practice-cell .cross,.practice-cell .diagonal{stroke-dasharray:3 3}.practice-cell span{font-family:KaiTi,STKaiti,"BiauKai","Noto Serif TC","Microsoft JhengHei",serif;font-size:36px;font-size:68cqw;line-height:1;color:#24211d;z-index:1}.practice-cell.trace span{color:#b9b2ac}[data-grid=tian] .diagonal,[data-grid=square] .diagonal,[data-grid=square] .cross{display:none}.sheet-footer{font-size:12px;text-align:center;color:#6f6757}.instructions{margin:36px 0}.instructions li{margin:8px 0}@media(max-width:500px){.wrap{padding:0 14px}.paper{padding:10px}.sheet-header,.student-line{font-size:11px}.controls{padding:14px}.options{align-items:flex-start;flex-direction:column}}@page{size:auto;margin:12mm}@media print{body{background:white;color:black}.site-nav,.intro,.controls,.instructions,.site-footer,noscript{display:none!important}.wrap{max-width:none;padding:0;margin:0}.paper{width:180mm;max-width:100%;padding:0;border:0;box-shadow:none;margin:0 auto;break-inside:avoid}.sheet-header,.student-line{font-size:10pt;margin-bottom:5mm}.practice-cell{height:22mm;aspect-ratio:auto}.practice-cell span{font-size:38pt}.sheet-footer{font-size:8pt;margin:4mm 0 0}}