:root{--bg:#fafaf8;--fg:#1a1a1a;--subtle:#666;--border:#ddd;--accent:#c0392b;--accent-hover:#a93226;--canvas-bg:#f0ede8;--reveal-color:#1a1a1a;--tile-bg:#fff;--tile-border:#ccc;--success-bg:#d4edda;--success-fg:#155724;--failure-bg:#f8d7da;--failure-fg:#721c24;--error-bg:#fff3cd;--error-fg:#856404}*,:before,:after{box-sizing:border-box;margin:0;padding:0}body{background:var(--bg);color:var(--fg);justify-content:center;align-items:flex-start;min-height:100dvh;font-family:Noto Sans SC,Microsoft YaHei,SimSun,system-ui,sans-serif;display:flex}#app{flex-direction:column;gap:1.25rem;width:100%;max-width:420px;padding:1rem 1rem 2rem;display:flex}header{text-align:center;border-bottom:2px solid var(--accent);padding-bottom:.75rem}#logo{width:auto;height:120px;margin:0 auto 0;display:block}.subtitle{color:var(--subtle);margin-top:-2.5rem;font-size:.85rem}main{flex-direction:column;align-items:center;gap:1rem;display:flex}#canvas-area{background:var(--canvas-bg);border-radius:8px;width:300px;height:300px;overflow:hidden;box-shadow:0 2px 12px #0000001f}#display-canvas{width:300px;height:300px;display:block}#attempts-row{color:var(--subtle);align-self:flex-end;padding-right:.25rem;font-size:.85rem}#attempts{color:var(--fg);font-weight:700}#guess-list{flex-wrap:wrap;justify-content:center;gap:.5rem;width:100%;display:flex}.guess-tile{border:2px solid var(--tile-border);background:var(--tile-bg);border-radius:6px;flex-direction:column;justify-content:center;align-items:center;gap:1px;width:48px;height:56px;font-size:.7rem;display:flex}.guess-tile.empty{opacity:.4}.guess-tile.current{border-color:var(--accent);opacity:.6;color:var(--subtle);font-size:1.1rem}.guess-tile.filled{background:hsl(var(--overlap-hue,0), 60%, 92%);border-color:hsl(var(--overlap-hue,0), 50%, 70%)}.guess-tile.correct{background:#d4edda;border-color:#28a745}.tile-char{font-family:Noto Sans SC,Microsoft YaHei,sans-serif;font-size:1.3rem;line-height:1}.tile-pct{color:var(--subtle);font-size:.6rem}.message{text-align:center;border-radius:6px;width:100%;min-height:1.5rem;padding:.4rem .75rem;font-size:.9rem}.message.success{background:var(--success-bg);color:var(--success-fg);padding:.6rem .75rem}.message.failure{background:var(--failure-bg);color:var(--failure-fg);padding:.6rem .75rem}@keyframes share-pulse{0%,to{box-shadow:0 0 0 2px #facc15,0 2px 6px #0003}50%{box-shadow:0 0 0 5px #fde68a,0 2px 6px #0003}}#share-btn{color:#333;cursor:pointer;letter-spacing:.02em;background:#fff;border:2px solid #facc15;border-radius:8px;margin:.6rem auto 0;padding:.5rem 1.6rem;font-size:1rem;font-weight:700;animation:1.4s ease-in-out infinite share-pulse;display:block}#share-btn:hover{background:#fefce8}#share-modal{z-index:200;justify-content:center;align-items:center;display:flex;position:fixed;inset:0}#share-modal[hidden]{display:none}#share-backdrop{background:#00000080;position:absolute;inset:0}#share-panel{background:var(--bg,#fff);color:var(--fg,#111);border-radius:12px;flex-direction:column;align-items:center;gap:.75rem;min-width:220px;padding:1.5rem 2rem;display:flex;position:relative;box-shadow:0 8px 30px #00000040}#share-preview{text-align:center;white-space:pre;margin:0;font-family:inherit;font-size:1.1rem;line-height:1.6}#share-copy-btn{background:var(--accent,#c0392b);color:#fff;cursor:pointer;border:none;border-radius:8px;width:100%;padding:.45rem 1.4rem;font-size:1rem;font-weight:700}#share-copy-btn:hover{filter:brightness(1.1)}#share-close-btn{color:var(--fg,#111);cursor:pointer;opacity:.75;background:0 0;border:1px solid;border-radius:6px;width:100%;padding:.3rem 1rem;font-size:.9rem}#share-close-btn:hover{opacity:1}.message.error{background:var(--error-bg);color:var(--error-fg);padding:.6rem .75rem}#input-area{width:100%}#char-input{text-align:center;border:2px solid var(--border);background:var(--tile-bg);width:100%;color:var(--fg);border-radius:6px;outline:none;padding:.6rem .75rem;font-family:Noto Sans SC,Microsoft YaHei,sans-serif;font-size:1.4rem;transition:border-color .15s}#char-input:focus{border-color:var(--accent)}#char-input:disabled{opacity:.5;cursor:not-allowed}#char-input:read-only{background:var(--canvas-bg);cursor:default;color:var(--fg)}#submit-btn{background:var(--accent);color:#fff;cursor:pointer;border:none;border-radius:6px;width:100%;padding:.6rem 1.25rem;font-size:.95rem;font-weight:700;transition:background .15s;display:block}#submit-btn:hover:not(:disabled){background:var(--accent-hover)}#submit-btn:disabled{opacity:.5;cursor:not-allowed}#overlap-popover{background:var(--tile-bg);border:1px solid var(--border);pointer-events:none;opacity:0;z-index:100;border-radius:8px;padding:4px;transition:opacity .12s,transform .12s;position:absolute;top:0;left:0;transform:scale(.92);box-shadow:0 4px 16px #0000002e}#overlap-popover.visible{opacity:1;transform:scale(1)}#popover-canvas{border-radius:4px;width:150px;height:150px;display:block}#overlap-popover.diff-legend:after{content:"■ both  ■ target  ■ guess";text-align:center;color:var(--subtle);pointer-events:none;margin-top:3px;font-size:.55rem;display:block}#dev-panel{border:1px dashed #aaa;border-radius:6px;width:100%;font-size:.8rem;overflow:hidden}#dev-panel summary{cursor:pointer;-webkit-user-select:none;user-select:none;background:#f5f5f5;padding:.4rem .75rem}.dev-controls{flex-direction:column;gap:.4rem;padding:.6rem .75rem;display:flex}.dev-row{gap:.4rem;display:flex}#dev-char-input{text-align:center;border:1px solid #ccc;border-radius:4px;width:60px;padding:.3rem .5rem;font-family:Noto Sans SC,sans-serif;font-size:1.1rem}#dev-panel button{cursor:pointer;background:#fff;border:1px solid #aaa;border-radius:4px;padding:.3rem .6rem;font-size:.8rem}#dev-panel button:hover{background:#eee}#dev-target-label{color:#888;font-style:italic}#input-mode-toggle{border:2px solid var(--border);border-radius:8px;width:100%;display:flex;overflow:hidden}.mode-btn{background:var(--tile-bg);color:var(--subtle);cursor:pointer;border:none;flex:1;padding:.4rem 0;font-size:.85rem;font-weight:600;transition:background .15s,color .15s}.mode-btn.active{background:var(--accent);color:#fff}.mode-btn:not(.active):hover{background:var(--canvas-bg);color:var(--fg)}#draw-area{flex-direction:column;gap:.5rem;width:100%;display:flex}#draw-area[hidden]{display:none}#draw-canvas-wrap{border:2px solid var(--border);touch-action:none;background:#fff;border-radius:8px;width:100%;position:relative;overflow:hidden}#draw-canvas{touch-action:none;cursor:crosshair;width:100%;height:200px;display:block}#draw-grid{pointer-events:none;background-image:linear-gradient(90deg,#0000000f 1px,#0000 1px),linear-gradient(#0000000f 1px,#0000 1px),linear-gradient(90deg,#0000000a 50%,#0000 50%),linear-gradient(#0000000a 50%,#0000 50%);background-size:33.33% 50%,33.33% 50%,100% 100%,100% 100%;position:absolute;inset:0}#draw-controls{justify-content:space-between;display:flex}#draw-clear-btn{color:var(--fg);cursor:pointer;opacity:.65;background:0 0;border:1px solid;border-radius:6px;padding:.3rem .9rem;font-size:.9rem}#draw-clear-btn:hover{opacity:1}#draw-submit-btn{background:var(--accent);color:#fff;cursor:pointer;border:none;border-radius:6px;padding:.5rem 1.25rem;font-size:.9rem;font-weight:700;transition:background .15s}#draw-submit-btn:hover:not(:disabled){background:var(--accent-hover)}#draw-submit-btn:disabled{opacity:.5;cursor:not-allowed}#draw-result{text-align:center;border-radius:6px;padding:.5rem .75rem;font-size:.9rem}#draw-result[hidden]{display:none}#draw-result.draw-options{background:var(--canvas-bg);color:var(--fg)}#draw-result.draw-error{background:var(--error-bg);color:var(--error-fg)}.draw-options-label{color:var(--subtle);margin-bottom:.4rem;font-size:.78rem}.draw-options-row{flex-wrap:wrap;justify-content:center;gap:.4rem;display:flex}.draw-option-btn{border:2px solid var(--border);background:var(--tile-bg);cursor:pointer;border-radius:6px;padding:.3rem .6rem;font-family:Noto Sans SC,Microsoft YaHei,sans-serif;font-size:1.5rem;line-height:1;transition:border-color .12s,background .12s}.draw-option-btn:hover{border-color:var(--accent);background:var(--canvas-bg)}#help-btn{border:2px solid var(--border);background:var(--tile-bg);width:2rem;height:2rem;color:var(--fg);cursor:pointer;border-radius:50%;font-size:1rem;font-weight:700;line-height:1;transition:border-color .15s,background .15s;position:absolute;top:.75rem;right:1rem}#help-btn:hover{border-color:var(--accent);background:var(--canvas-bg)}header{position:relative}#instructions-modal{z-index:200;justify-content:center;align-items:center;display:flex;position:fixed;inset:0}#instructions-modal[hidden]{display:none}#instructions-backdrop{background:#00000073;position:absolute;inset:0}#instructions-panel{background:var(--bg);border-radius:12px;flex-direction:column;gap:.75rem;width:calc(100% - 2rem);max-width:380px;max-height:90dvh;padding:1.5rem 1.5rem 1.25rem;display:flex;position:relative;overflow-y:auto;box-shadow:0 8px 32px #00000038}#instructions-close{cursor:pointer;color:var(--subtle);background:0 0;border:none;border-radius:4px;padding:.15rem .4rem;font-size:1.4rem;line-height:1;position:absolute;top:.75rem;right:.75rem}#instructions-close:hover{background:var(--canvas-bg);color:var(--fg)}#instructions-panel h2{text-align:center;margin-bottom:.25rem;font-size:1.3rem}#instructions-panel h3{text-transform:uppercase;letter-spacing:.05em;color:var(--subtle);margin-top:.25rem;font-size:.9rem}#instructions-panel p{font-size:.9rem;line-height:1.55}.instr-tiles{justify-content:center;gap:.5rem;display:flex}.instr-tile{border:2px solid hsl(var(--overlap-hue,0), 50%, 70%);background:hsl(var(--overlap-hue,0), 60%, 92%);border-radius:6px;flex-direction:column;align-items:center;gap:2px;width:64px;padding:.3rem 0;display:flex}.instr-tile .tile-char{font-size:1.4rem;line-height:1}.instr-tile .tile-pct{color:var(--subtle);font-size:.6rem}.instr-label{color:var(--subtle);margin-top:2px;font-size:.6rem}.instr-diagram-wrap{justify-content:center;gap:.5rem;display:flex}.instr-diagram-cell{color:var(--subtle);flex-direction:column;align-items:center;gap:4px;font-size:.65rem;display:flex}.instr-diagram-cell canvas{background:var(--canvas-bg);border-radius:6px;width:90px;height:90px;display:block}.instr-legend{color:var(--subtle);justify-content:center;gap:.75rem;font-size:.68rem;display:flex}.legend-both{color:#1a1a1a}.legend-target{color:#2563eb}.legend-guess{color:#dc2626}.instr-fine{color:var(--subtle);text-align:center;font-size:.8rem}#instructions-play-btn{background:var(--accent);color:#fff;cursor:pointer;border:none;border-radius:8px;width:100%;margin-top:.25rem;padding:.65rem 1rem;font-size:1rem;font-weight:700;transition:background .15s;display:block}#instructions-play-btn:hover{background:var(--accent-hover)}#footer{text-align:center;padding:1rem 1rem 2rem}#footer-kofi{justify-content:center;display:flex}@media (width<=440px){#canvas-area,#display-canvas{width:280px;height:280px}}