*{margin:0;padding:0;box-sizing:border-box}:root{--primary-color: #4a90d9;--primary-hover: #357abd;--secondary-color: #6c757d;--success-color: #28a745;--danger-color: #dc3545;--warning-color: #ffc107;--bg-color: #f5f7fa;--card-bg: #ffffff;--text-color: #333333;--text-muted: #6c757d;--border-color: #e0e0e0;--shadow: 0 2px 8px rgba(0, 0, 0, .1)}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;background-color:var(--bg-color);color:var(--text-color);line-height:1.6}a{color:var(--primary-color);text-decoration:none}a:hover{text-decoration:underline}button{cursor:pointer;font-family:inherit}input,textarea{font-family:inherit}.container{max-width:1200px;margin:0 auto;padding:0 20px}.header{background:var(--card-bg);box-shadow:var(--shadow);position:sticky;top:0;z-index:100}.header-content{display:flex;justify-content:space-between;align-items:center;padding:15px 20px;max-width:1200px;margin:0 auto}.logo{font-size:1.5rem;font-weight:700;color:var(--primary-color);display:flex;align-items:center;gap:8px}.nav{display:flex;gap:20px;align-items:center}.nav a{color:var(--text-color);font-weight:500;padding:8px 16px;border-radius:6px;transition:all .2s}.nav a:hover,.nav a.active{background:var(--primary-color);color:#fff;text-decoration:none}.user-info{display:flex;align-items:center;gap:15px}.user-name{font-weight:500}.admin-badge{background:var(--warning-color);color:#333;padding:2px 8px;border-radius:4px;font-size:.75rem;font-weight:600}.btn{display:inline-flex;align-items:center;justify-content:center;padding:10px 20px;border-radius:6px;font-size:1rem;font-weight:500;border:none;transition:all .2s;gap:8px}.btn-primary{background:var(--primary-color);color:#fff}.btn-primary:hover{background:var(--primary-hover)}.btn-secondary{background:var(--secondary-color);color:#fff}.btn-secondary:hover{background:#5a6268}.btn-success{background:var(--success-color);color:#fff}.btn-success:hover{background:#218838}.btn-danger{background:var(--danger-color);color:#fff}.btn-danger:hover{background:#c82333}.btn-outline{background:transparent;border:2px solid var(--primary-color);color:var(--primary-color)}.btn-outline:hover{background:var(--primary-color);color:#fff}.btn-sm{padding:6px 12px;font-size:.875rem}.btn-lg{padding:14px 28px;font-size:1.125rem}.card{background:var(--card-bg);border-radius:12px;box-shadow:var(--shadow);padding:24px;margin-bottom:20px}.card-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px;padding-bottom:15px;border-bottom:1px solid var(--border-color)}.card-title{font-size:1.25rem;font-weight:600;color:var(--text-color)}.form-group{margin-bottom:20px}.form-label{display:block;margin-bottom:8px;font-weight:500;color:var(--text-color)}.form-input{width:100%;padding:12px 16px;border:2px solid var(--border-color);border-radius:8px;font-size:1rem;transition:border-color .2s}.form-input:focus{outline:none;border-color:var(--primary-color)}.form-input::placeholder{color:var(--text-muted)}.table{width:100%;border-collapse:collapse}.table th,.table td{padding:12px 16px;text-align:left;border-bottom:1px solid var(--border-color)}.table th{background:var(--bg-color);font-weight:600}.table tr:hover{background:#f8f9fa}.page{padding:40px 20px;max-width:1200px;margin:0 auto}.page-title{font-size:2rem;font-weight:700;margin-bottom:30px;color:var(--text-color)}.page-subtitle{font-size:1rem;color:var(--text-muted);margin-top:-20px;margin-bottom:30px}.grid{display:grid;gap:20px}.grid-2{grid-template-columns:repeat(2,1fr)}.grid-3{grid-template-columns:repeat(3,1fr)}.grid-4{grid-template-columns:repeat(4,1fr)}@media(max-width:768px){.grid-2,.grid-3,.grid-4{grid-template-columns:1fr}.header-content{flex-direction:column;gap:15px}.nav{flex-wrap:wrap;justify-content:center}}.stat-card{text-align:center;padding:20px}.stat-value{font-size:2.5rem;font-weight:700;color:var(--primary-color)}.stat-label{font-size:.9rem;color:var(--text-muted);margin-top:5px}.alert{padding:15px 20px;border-radius:8px;margin-bottom:20px}.alert-success{background:#d4edda;color:#155724;border:1px solid #c3e6cb}.alert-error{background:#f8d7da;color:#721c24;border:1px solid #f5c6cb}.alert-warning{background:#fff3cd;color:#856404;border:1px solid #ffeeba}.alert-info{background:#d1ecf1;color:#0c5460;border:1px solid #bee5eb}.toggle{position:relative;display:inline-block;width:50px;height:26px}.toggle input{opacity:0;width:0;height:0}.toggle-slider{position:absolute;cursor:pointer;top:0;left:0;right:0;bottom:0;background-color:#ccc;transition:.3s;border-radius:26px}.toggle-slider:before{position:absolute;content:"";height:20px;width:20px;left:3px;bottom:3px;background-color:#fff;transition:.3s;border-radius:50%}.toggle input:checked+.toggle-slider{background-color:var(--primary-color)}.toggle input:checked+.toggle-slider:before{transform:translate(24px)}.typing-area{font-family:Consolas,Monaco,monospace;font-size:1.25rem;line-height:2;padding:30px;background:#fafafa;border-radius:8px;margin-bottom:20px;min-height:150px}.typing-char{transition:color .1s}.typing-char.correct{color:var(--success-color)}.typing-char.incorrect{color:var(--danger-color);text-decoration:underline}.typing-char.current{background:var(--primary-color);color:#fff;border-radius:2px}.typing-char.pending{color:var(--text-muted)}.typing-input{font-size:1.25rem;font-family:Consolas,Monaco,monospace}.wubi-result-card{display:flex;align-items:center;gap:28px;padding:24px;background:linear-gradient(135deg,#f6f9ff,#edf2ff);border-radius:14px;border:1px solid #d6e1f5}.wubi-char-box{flex-shrink:0;width:96px;height:96px;display:flex;align-items:center;justify-content:center;background:#fff;border-radius:14px;box-shadow:0 3px 12px #4a90d924,0 1px 3px #0000000f;border:1.5px solid #c5d8f0;font-size:3.4rem;font-weight:700;color:var(--primary-color);line-height:1}.wubi-codes-box{flex:1;display:flex;flex-direction:column;gap:10px}.wubi-code-title{font-size:.72rem;font-weight:600;color:#8fa8c8;text-transform:uppercase;letter-spacing:.12em}.wubi-keys-row{display:flex;gap:8px;align-items:center;flex-wrap:wrap}.wubi-key{display:inline-flex;align-items:center;justify-content:center;min-width:52px;height:54px;padding:0 10px;background:#fff;border:1.5px solid #b8cce0;border-bottom:4px solid #8aaac4;border-radius:9px;font-family:SF Mono,Consolas,Courier New,monospace;font-size:1.45rem;font-weight:700;color:var(--primary-color);box-shadow:0 2px 5px #4a90d91a;letter-spacing:0;line-height:1;-webkit-user-select:none;user-select:none}.wubi-simple-codes{font-size:.82rem;color:#9fb3c8;font-family:SF Mono,Consolas,Courier New,monospace;letter-spacing:.04em}.wubi-batch-results{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}.wubi-batch-item{display:flex;flex-direction:column;align-items:center;padding:15px;background:#fafafa;border-radius:8px;min-width:80px}.wubi-batch-char{font-size:1.5rem;font-weight:600;color:var(--text-color)}.wubi-batch-code{font-size:.9rem;font-family:Consolas,Monaco,monospace;color:var(--primary-color);margin-top:5px}.leaderboard-rank{font-weight:700;width:40px}.leaderboard-rank.gold{color:gold}.leaderboard-rank.silver{color:silver}.leaderboard-rank.bronze{color:#cd7f32}.loading{display:flex;justify-content:center;align-items:center;padding:40px}.spinner{width:40px;height:40px;border:4px solid var(--border-color);border-top-color:var(--primary-color);border-radius:50%;animation:spin 1s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.tabs{display:flex;gap:10px;margin-bottom:20px;border-bottom:2px solid var(--border-color);padding-bottom:10px}.tab{padding:10px 20px;border:none;background:none;font-size:1rem;font-weight:500;color:var(--text-muted);cursor:pointer;border-radius:6px 6px 0 0;transition:all .2s}.tab:hover{color:var(--text-color);background:#f0f0f0}.tab.active{color:var(--primary-color);background:var(--card-bg);border-bottom:3px solid var(--primary-color);margin-bottom:-12px}.modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:#00000080;display:flex;justify-content:center;align-items:center;z-index:1000}.modal{background:var(--card-bg);border-radius:12px;padding:30px;max-width:500px;width:90%;max-height:90vh;overflow-y:auto}.modal-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px}.modal-title{font-size:1.5rem;font-weight:600}.modal-close{background:none;border:none;font-size:1.5rem;color:var(--text-muted);cursor:pointer}.modal-close:hover{color:var(--text-color)}.empty-state{text-align:center;padding:60px 20px;color:var(--text-muted)}.empty-state-icon{font-size:4rem;margin-bottom:20px}.auth-page{min-height:calc(100vh - 200px);display:flex;justify-content:center;align-items:center;padding:40px 20px}.auth-card{width:100%;max-width:400px}.auth-title{text-align:center;margin-bottom:30px}.auth-footer{text-align:center;margin-top:20px;color:var(--text-muted)}.favicon{width:32px;height:32px}