:root{--primary-color:#0056d6;--primary-hover:#0044ab;--secondary-color:#6c757d;--success-color:#27ae60;--warning-color:#f39c12;--danger-color:#d63031;--bg-body:#f8f9fa;--bg-card:#ffffff;--border-color:#dee2e6;--text-main:#212529;--text-muted:#6c757d}body{font-family:'Segoe UI',Roboto,Helvetica,Arial,sans-serif;background-color:var(--bg-body);color:var(--text-main);margin:0;display:flex;flex-direction:column;align-items:center;min-height:100vh}.header-logo{display:flex;align-items:center;gap:12px;margin:30px 0;cursor:pointer;transition:transform .2s}.header-logo:hover{transform:scale(1.02)}h1{margin:0;font-size:2rem;font-weight:700;color:var(--primary-color)}h1 span{color:var(--secondary-color);font-weight:300}#message{margin-top:10px;color:#d63031}a{color:var(--primary-color);text-decoration:none;font-weight:600;transition:all .2s ease;padding:2px 4px;border-radius:4px}a:hover{color:var(--primary-hover);background-color:rgba(0,86,214,.05);text-decoration:underline}footer{margin-top:40px;padding:20px;font-size:12px;color:#888;text-align:center}.container{background:var(--bg-card);padding:30px;border-radius:12px;box-shadow:0 4px 20px rgba(0,0,0,.08);width:95%;max-width:1200px;margin-bottom:40px}.tools-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:20px;margin:25px 0}.tool-card{border:1px solid var(--border-color);border-radius:10px;padding:20px;display:flex;flex-direction:column;transition:all .3s ease;background:#fff}.tool-card:hover{border-color:var(--primary-color);box-shadow:0 5px 15px rgba(0,86,214,.1);transform:translateY(-2px)}.tool-card h3{margin:0 0 10px 0;font-size:1.1rem;color:var(--primary-color);display:flex;align-items:center;gap:8px}.tool-card .desc{font-size:.85rem;color:var(--text-muted);line-height:1.4;flex-grow:1;margin-bottom:15px}.btn{padding:8px 16px;font-weight:500;border-radius:6px;transition:all .2s;font-size:.9rem;cursor:pointer;border:none;color:#fff}.btn-primary{background:var(--primary-color)}.btn-primary:hover{background:var(--primary-hover)}.btn-logic{font-size:12px;padding:5px 10px}#nonogramDisplay{margin-top:20px;text-align:center}.nonogram-grid{display:inline-grid;background:#fff;border:2px solid #000}.cell{width:20px;height:20px;border:1px solid #ccc;box-sizing:border-box;cursor:pointer;position:relative}.cell.filled{background:#333}.cell.logical-filled{background:#d63031}.cell.ambiguous{border:1px solid #6c5ce7!important;box-shadow:inset 0 0 5px rgba(108,92,231,.5)}.cell.ambiguous.filled-diff{background:#6c5ce7!important}.cell.ambiguous.empty-diff{background:#a29bfe!important}.cell.mark-x::before{content:'×';color:#d63031;font-weight:700;font-size:16px;display:flex;align-items:center;justify-content:center;width:100%;height:100%}.thick-top{border-top:2px solid #000!important}.thick-left{border-left:2px solid #000!important}.thick-top-left{border-right:2px solid #000!important;border-bottom:2px solid #000!important;display:flex;align-items:center;justify-content:center;background:#f8f9fa;overflow:hidden}.mini-preview{image-rendering:pixelated;background:#fff}.col-hint{display:flex;flex-direction:column;justify-content:flex-end;align-items:center;font-size:10px;min-height:60px;border-bottom:2px solid #000;border-left:1px solid #eee}.row-hint{display:flex;justify-content:flex-end;align-items:center;padding-right:8px;font-size:10px;min-width:60px;border-right:2px solid #000;border-top:1px solid #eee}.size-select{padding:5px;border-radius:4px;border:1px solid #ccc;width:100%}