:root{--bg: #f5f7fc;--grid: #dde4f2;--ink: #1f2a44;--ink-soft: #2b3550;--muted: #5b6782;--line: #c9d2e5;--action: #2f5bd3;--green: #2fbf71;--red: #e5484d;--pink: #ff7eb6;--night: #16203a;--font: "Noto Sans TC", "PingFang TC", "Heiti TC", "Microsoft JhengHei", sans-serif}*{box-sizing:border-box}html,body{margin:0;height:100%}body{font-family:var(--font);color:var(--ink);background-color:var(--bg);background-image:linear-gradient(var(--grid) 1px,transparent 1px),linear-gradient(90deg,var(--grid) 1px,transparent 1px);background-size:24px 24px;animation:grid-flow 40s linear infinite;-webkit-tap-highlight-color:transparent;touch-action:manipulation;overscroll-behavior:none}@keyframes grid-flow{to{background-position:24px 48px}}.screen{max-width:480px;margin:0 auto;padding:max(20px,env(safe-area-inset-top)) 16px max(24px,env(safe-area-inset-bottom));min-height:100%;display:flex;flex-direction:column;gap:16px}h1,h2,h3{font-weight:900;margin:0;letter-spacing:.02em}h1{font-size:34px}h2{font-size:22px}h3{font-size:17px}p{margin:0;line-height:1.7}.muted{color:var(--muted);font-size:14px}.rule{border:0;border-top:1px solid var(--line);margin:4px 0;width:100%}.row{display:flex;gap:8px;align-items:center}.spacer{flex:1}.btn{position:relative;font:inherit;font-weight:800;font-size:17px;border-radius:10px;padding:14px 16px;border:1.5px solid var(--action);background:var(--action);color:#fff;width:100%;cursor:pointer;text-align:center}.btn.line{background:transparent;color:var(--action)}.btn.quiet{border-color:var(--line);background:transparent;color:var(--ink)}.btn:disabled{opacity:.45}.btn:after{content:"";position:absolute;inset:-1.5px;border-radius:inherit;border:1.5px solid var(--action);opacity:0;pointer-events:none}.btn.pressed:after{animation:ripple .45s ease-out}@keyframes ripple{0%{opacity:.8;transform:scale(1)}to{opacity:0;transform:scale(1.12,1.4)}}.btn small{display:block;font-weight:500;font-size:13px;opacity:.85;margin-top:2px}.list{display:flex;flex-direction:column}.list>*{padding:12px 0;border-bottom:1px solid var(--line)}.list>.btn{border:0;border-radius:0;border-bottom:1px solid var(--line)}.list>*:first-child{border-top:1px solid var(--line)}.field{font:inherit;font-size:20px;padding:12px;border:1.5px solid var(--ink-soft);border-radius:10px;width:100%;background:#fff;color:var(--ink)}.error{color:var(--red);font-size:14px;min-height:20px}.chip{display:inline-block;padding:2px 10px;border-radius:999px;font-weight:800;color:#fff;font-size:15px}.chip.green{background:var(--green)}.chip.red{background:var(--red)}.chip.pink{background:var(--pink)}.chip.blue{background:#3b82f6}.chip.orange{background:#f59e0b}.chip.purple{background:#8b5cf6}.colors{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.color-btn{font:inherit;font-weight:900;font-size:18px;color:#fff;border:2px solid var(--ink-soft);border-radius:999px;padding:14px 0;cursor:pointer}.color-btn small{display:block;font-size:12px;font-weight:600}.color-btn.green{background:var(--green)}.color-btn.red{background:var(--red)}.color-btn.pink{background:var(--pink)}.color-btn:disabled{opacity:.4}.stats{display:grid;grid-template-columns:1fr auto;row-gap:0}.stats>div{padding:10px 0;border-bottom:1px solid var(--line)}.stats>div:nth-child(2n){text-align:right;font-weight:800}.big-score{font-size:56px;font-weight:900;line-height:1.1;font-variant-numeric:tabular-nums}.explain{border-left:3px solid var(--action);padding:4px 0 4px 12px;display:flex;flex-direction:column;gap:8px}.explain p{font-size:15px}.toast{position:fixed;left:50%;bottom:32px;transform:translate(-50%);background:var(--ink);color:#fff;padding:10px 18px;border-radius:999px;font-weight:700;z-index:100;pointer-events:none;animation:toast 1.8s ease forwards}@keyframes toast{0%{opacity:0;transform:translate(-50%,10px)}12%,80%{opacity:1;transform:translate(-50%)}to{opacity:0}}.howto-sprites{display:flex;gap:8px;align-items:flex-end}.howto-sprites img{width:48px}#battle{position:fixed;inset:0;background:var(--night);overflow:hidden}#game{position:absolute;inset:0}#game canvas{display:block}.overlay{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;padding:16px;background:#16203a8c;z-index:10}.q-panel{width:100%;max-width:360px;max-height:90%;overflow:auto;background:#fffaf0;border:3px solid var(--ink-soft);border-radius:22px;padding:18px;display:flex;flex-direction:column;gap:12px;animation:pop .25s ease-out}@keyframes pop{0%{transform:scale(.85);opacity:0}}.q-panel h2{font-size:24px;text-align:center}.q-panel .btn{border-radius:999px;border-width:2.5px;border-color:var(--ink-soft)}.q-panel .btn.line{color:var(--ink-soft)}.q-tag{display:inline-block;background:#fff;border:2px solid var(--ink-soft);border-radius:10px;padding:2px 10px;font-weight:900}.quiz-options{display:grid;grid-template-columns:1fr 1fr;gap:8px}.debug-panel{position:fixed;left:4px;top:56px;z-index:50;display:flex;flex-direction:column;gap:4px;font-size:11px}.debug-panel button{font:inherit;padding:4px 6px;border:1px dashed #ffcc00;background:#0009;color:#fc0;border-radius:6px}.debug-panel button.on{background:#fc0;color:#000}.god-panel button{border-color:#9fd3ff;color:#9fd3ff}.god-panel button.on{background:#9fd3ff}.btn.small{width:auto;min-height:0;padding:6px 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