:root{color-scheme:light;--app-bg-top: #f8f0d8;--app-bg-bottom: #fdebd2;--board-bg: rgba(255, 252, 244, .88);--board-shadow: rgba(116, 83, 33, .15);--ink: #23313d;--muted: #5b6773;--accent: #f26d4f;--accent-strong: #eb5b3e;--accent-soft: rgba(242, 109, 79, .16);--mint: #5ab6a8;--sky: #7ab4ff;--sky-soft: rgba(122, 180, 255, .22);--trace-bg: #c2c2c2;--trace-next: #95ddff;--trace-done: #4a90e2;--trace-demo: #f26d4f;--line: rgba(35, 49, 61, .12)}*{box-sizing:border-box}html,body{margin:0;height:100%;overflow:hidden}body{height:100svh;font-family:Avenir Next Rounded,Trebuchet MS,Gill Sans,sans-serif;color:var(--ink);background:radial-gradient(circle at 12% 18%,rgba(255,255,255,.7),transparent 30%),radial-gradient(circle at 88% 15%,rgba(122,180,255,.28),transparent 28%),radial-gradient(circle at 76% 84%,rgba(90,182,168,.22),transparent 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ease}.writing-app__fruit{font-size:44px;pointer-events:none;-webkit-user-select:none;user-select:none;transition:opacity .24s ease,transform .24s ease;transform-box:fill-box;transform-origin:center}.writing-app__fruit--captured{opacity:0;transform:scale(.42)}.writing-app__fruit--hidden{opacity:0;transform:scale(.7)}.writing-app__boundary-star{font-size:40px;pointer-events:none;-webkit-user-select:none;user-select:none;filter:drop-shadow(0 4px 8px rgba(35,49,61,.18))}.writing-app__boundary-star--hidden{opacity:0}.writing-app__snake{pointer-events:none;transition:opacity .18s ease}.writing-app__snake-segment{pointer-events:none;overflow:visible;transform-box:fill-box;transform-origin:center}.writing-app__snake-head{filter:none}.writing-app__deferred-head{pointer-events:none;opacity:0;overflow:visible;transform-box:fill-box;transform-origin:center}.writing-app__deferred-head 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.writing-app__settings-panel{display:none}.writing-app__settings-panel--options{min-width:min(92vw,420px);max-width:min(92vw,420px);max-height:min(74vh,760px);overflow:auto}.writing-app__settings-field{display:grid;gap:8px}.writing-app__settings-label{display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:.9rem;font-weight:700;color:var(--muted)}.writing-app__settings-toggle{display:flex;align-items:center;gap:10px;font-size:.95rem;font-weight:700;color:var(--ink)}.writing-app__settings-toggle input{margin:0;inline-size:16px;block-size:16px;accent-color:var(--accent)}@media (max-width: 900px){.writing-app{padding:14px}.writing-app--snake{padding:0}.writing-app__topbar{top:14px;left:14px;right:14px;grid-template-columns:minmax(0,1fr) auto}.writing-app__topbar--score{grid-template-columns:minmax(0,1fr) auto minmax(420px,560px) auto}.writing-app--snake .writing-app__topbar{top:10px;left:10px;right:10px;grid-template-columns:minmax(0,1fr) auto}.writing-app__board{min-height:0}.writing-app__button{padding:14px 22px}.writing-app__icon-button{width:42px;height:42px}}@media (max-width: 720px){.writing-app__topbar{grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:12px}.writing-app__topbar--score{grid-template-columns:minmax(0,1fr) auto;align-items:start}.writing-app__control-strip{grid-column:1 / -1;grid-template-columns:1fr;gap:10px}.writing-app--snake .writing-app__control-strip--floating{left:10px;right:10px;bottom:10px;width:auto}.writing-app__topbar-actions{gap:6px}.writing-app__fruit-progress{flex-wrap:wrap;gap:6px;min-height:30px}.writing-app__word{font-size:clamp(1.7rem,6vw,2.4rem)}.writing-app__eyebrow{font-size:.8rem}.writing-app__tolerance{grid-column:1 / -1;padding:10px 14px}.writing-app__annotation-controls{grid-template-columns:1fr;padding:10px 14px}.writing-app__score-card{padding:10px 14px}.writing-app__button{padding:13px 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16px;color:#fff;background:#2f7d68;font:inherit;font-size:1rem;font-weight:800;cursor:pointer}.worksheet-app__button-row{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.worksheet-app__button:hover{background:#266c59}.worksheet-app__button:active{transform:translateY(1px)}.worksheet-app__button:disabled{cursor:progress;opacity:.68;transform:none}.worksheet-app__button--secondary{color:#23313d;background:#e6eeeb}.worksheet-app__button--secondary:hover{background:#d7e3df}.worksheet-app__status{min-height:1.25em;color:#5b6773;font-size:.9rem;font-weight:700}.worksheet-app__preview{min-width:0;padding:22px;overflow:auto}.worksheet-app__page-frame{--worksheet-preview-scale: 1;width:calc(210mm * var(--worksheet-preview-scale));height:calc(297mm * var(--worksheet-preview-scale));margin:0 auto}.worksheet-page{--practice-row-height: 24mm;display:grid;grid-template-rows:auto 84mm 1fr;gap:4mm;width:210mm;height:297mm;margin:0 auto;padding:12mm;overflow:hidden;background:#fff;box-shadow:0 18px 42px #23313d2e;-webkit-print-color-adjust:exact;print-color-adjust:exact;transform:scale(var(--worksheet-preview-scale));transform-origin:top center}.worksheet-page__header{display:grid;gap:4mm}.worksheet-page__meta-line{display:grid;grid-template-columns:1fr 1fr;gap:12mm;color:#23313d;font-size:11pt;font-weight:700}.worksheet-page__meta-line span{display:flex;align-items:flex-end;gap:4mm;min-height:8mm}.worksheet-page__meta-line span:after{content:"";flex:1;border-bottom:.35mm solid #cfd6dc}.worksheet-page__example{min-height:0;border-bottom:.35mm solid #d7dde2}.worksheet-page__practice{display:grid;grid-auto-rows:var(--practice-row-height);gap:0;min-height:0;overflow:hidden}.worksheet-word{display:block;width:100%;min-width:0}.worksheet-word--top{height:100%}.worksheet-word--practice{height:var(--practice-row-height);border-bottom:.3mm solid 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print{html,body,#app.worksheet-root{width:210mm;height:auto;min-height:0;overflow:visible;background:#fff}.worksheet-app{display:block;min-height:0}.worksheet-app__controls{display:none}.worksheet-app__preview{display:block;padding:0;overflow:visible}.worksheet-app__page-frame{width:auto;height:auto;margin:0}.worksheet-page{width:210mm;height:296mm;margin:0;box-shadow:none;transform:none}}