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#0000001a}.btn-icon.play{color:#28a745;border-color:#d4edda}.btn-icon.play:hover{background-color:#e8f5e9}.btn-icon.grade{color:#f57c00;border-color:#ffe0b2}.btn-icon.grade:hover{background-color:#fff3e0}.btn-icon.edit{color:#074b9d;border-color:#eef4ff}.btn-icon.edit:hover{background-color:#eef4ff}.btn-icon.delete{color:#fa5252;border-color:#ffc9c9}.btn-icon.delete:hover{background-color:#fff5f5}.btn{cursor:pointer;border:none;border-radius:12px;justify-content:center;align-items:center;gap:.6rem;padding:.8rem 1.8rem;font-size:1rem;font-weight:700;text-decoration:none;transition:all .2s;display:inline-flex}.btn.primary{color:#fff;background-color:#074b9d;box-shadow:0 4px 12px #074b9d33}.btn.primary:hover{background-color:#063d7e}.btn.secondary{color:#495057;background-color:#f1f3f5}.btn.large{border-radius:16px;padding:1.2rem 2.5rem;font-size:1.1rem}.btn.small{border-radius:8px;padding:.5rem 1rem;font-size:.9rem}.btn-nav{color:#495057;background-color:#fff;border:1px solid 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#eee;border-radius:14px;justify-content:center;align-items:center;gap:.5rem;padding:1rem;font-weight:700;display:flex}.role-toggle button.active{color:#074b9d;background-color:#eef4ff;border-color:#074b9d}.login-footer{color:#777;margin-top:2rem;font-size:.95rem}.btn-link{color:#074b9d;cursor:pointer;background:0 0;border:none;font-weight:700;text-decoration:underline}.create-header{border-bottom:2px solid #eee;justify-content:space-between;align-items:center;margin-bottom:2rem;padding-bottom:1rem;display:flex}.tab-menu{gap:.5rem;display:flex}.tab-btn{color:#777;cursor:pointer;background:0 0;border:none;border-radius:10px;align-items:center;gap:.5rem;padding:.7rem 1.4rem;font-weight:700;display:flex}.tab-btn.active{color:#fff;background:#074b9d}.settings-section{text-align:left;background:#f9f9f9;border:1px solid #eee;border-radius:16px;margin-bottom:2rem;padding:1.5rem}.setting-item{justify-content:space-between;align-items:center;margin-bottom:1.5rem;display:flex}.switch{width:50px;height:28px;display:inline-block;position:relative}.switch input{opacity:0;width:0;height:0}.slider{cursor:pointer;background-color:#ccc;border-radius:34px;transition:all .4s;position:absolute;inset:0}.slider:before{content:"";background-color:#fff;border-radius:50%;width:20px;height:20px;transition:all .4s;position:absolute;bottom:4px;left:4px}input:checked+.slider{background-color:#074b9d}input:checked+.slider:before{transform:translate(22px)}.mode-selector{background:#eee;border-radius:10px;gap:.2rem;padding:.3rem;display:flex}.mode-selector button{cursor:pointer;background:0 0;border:none;border-radius:8px;padding:.5rem 1rem;font-size:.9rem;font-weight:700}.mode-selector button.active{color:#074b9d;background:#fff;box-shadow:0 2px 4px 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#074b9d;border-bottom-width:0;position:absolute;bottom:-10px;left:50%;transform:translate(-50%)}.solve-layout{align-items:flex-start;gap:2.5rem;width:100%;max-width:1400px;margin:0 auto;padding:2rem;display:flex}.solve-main{flex:1;max-width:900px}.solve-top-bar{-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);z-index:100;background:#fffc;border:1px solid #ffffff4d;border-radius:24px;justify-content:space-between;align-items:center;margin-bottom:2rem;padding:1.2rem 2rem;display:flex;position:sticky;top:1rem;box-shadow:0 8px 32px #0000000d}.solve-top-bar h2{color:#1d1d1f;margin:0;font-size:1.4rem;font-weight:800}.timer-group{gap:1rem;display:flex}.solve-timer{color:#074b9d;font-variant-numeric:tabular-nums;background:#f2f4f7;border-radius:16px;align-items:center;gap:.6rem;padding:.5rem 1.2rem;font-size:1.3rem;font-weight:700;display:flex}.solve-timer.mini{color:#555;background:#eef2f6;font-size:1rem}.solve-timer.warning{color:#e02020;background:#fff1f1;animation:1s infinite 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#0000000a}.intro-actions{justify-content:center;gap:1.5rem;margin-top:2.5rem;display:flex}.writing-conditions-grid{gap:.8rem;margin-top:1rem;display:grid}.condition-input-group{background:#fff;border:1px solid #eee;border-radius:12px;align-items:center;gap:.8rem;padding:.5rem 1rem;display:flex}.condition-label{color:#074b9d;min-width:50px;font-size:.85rem;font-weight:800}.word-bank-setting{background:#eef4ff;border:1px solid #d0e1ff;border-radius:16px;margin-bottom:1.5rem;padding:1.5rem}.solve-conditions-box{background:#f8f9fa;border-left:5px solid #074b9d;border-radius:16px;margin-bottom:1.5rem;padding:1.5rem}.solve-conditions-box h4{color:#333;margin-top:0;font-size:1rem}.solve-conditions-box ul{margin:.5rem 0 0 1.2rem;padding:0}.solve-conditions-box li{color:#555;margin-bottom:.3rem;font-size:.95rem}.word-bank-display{background:#f0f7ff;border:1px solid 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