:root{--primary-color:#2c3e50;--secondary-color:#34495e;--accent-color:#4a6fa5;--background-color:#1a2332;--primary-gradient:linear-gradient(135deg, #1e3a5f 0%, #2c3e50 100%);--secondary-gradient:linear-gradient(135deg, #2c3e50 0%, #34495e 100%);--accent-gradient:linear-gradient(135deg, #34495e 0%, #4a6fa5 100%);--background-gradient:linear-gradient(135deg, #1a2332 0%, #1e3a5f 100%);--card-header-gradient:linear-gradient(135deg, #2c3e50 0%, #34495e 100%);--text-primary:#ffffff;--text-secondary:#b8c5d6;--text-muted:#8892b0;--bg-card:rgba(255, 255, 255, 0.15);--bg-card-hover:rgba(255, 255, 255, 0.2);--bg-input:rgba(255, 255, 255, 0.1);--shadow-sm:0 2px 4px rgba(0, 0, 0, 0.1);--shadow-md:0 4px 6px rgba(0, 0, 0, 0.1);--shadow-lg:0 10px 15px rgba(0, 0, 0, 0.1);--shadow-xl:0 20px 25px rgba(0, 0, 0, 0.15);--spacing-xs:0.5rem;--spacing-sm:1rem;--spacing-md:1.5rem;--spacing-lg:2rem;--spacing-xl:3rem;--radius-sm:8px;--radius-md:12px;--radius-lg:16px;--radius-xl:24px;--transition-fast:0.2s ease;--transition-normal:0.3s ease;--transition-slow:0.5s ease}*{margin:0;padding:0;box-sizing:border-box}body{font-family:'Segoe UI',Tahoma,Geneva,Verdana,sans-serif;background:var(--background-gradient);color:var(--text-primary);line-height:1.6;min-height:100vh;overflow-x:hidden}.background-animation{position:fixed;top:0;left:0;width:100%;height:100%;z-index:-1;overflow:hidden}.floating-shapes{position:relative;width:100%;height:100%}.shape{position:absolute;border-radius:50%;background:linear-gradient(45deg,rgba(44,62,80,.1),rgba(74,111,165,.1));animation:float 20s infinite linear}.shape-1{width:80px;height:80px;top:20%;left:10%;animation-delay:0s}.shape-2{width:120px;height:120px;top:60%;right:10%;animation-delay:-5s}.shape-3{width:60px;height:60px;top:80%;left:20%;animation-delay:-10s}.shape-4{width:100px;height:100px;top:30%;right:30%;animation-delay:-15s}.shape-5{width:140px;height:140px;top:10%;left:60%;animation-delay:-7s}@keyframes float{0%{transform:translateY(0) rotate(0);opacity:.7}50%{transform:translateY(-20px) rotate(180deg);opacity:.3}100%{transform:translateY(0) rotate(360deg);opacity:.7}}.main-container{max-width:800px;margin:0 auto;padding:var(--spacing-lg);position:relative;z-index:1}.header{text-align:center;margin-bottom:var(--spacing-xl)}.header-content{background:var(--bg-card);backdrop-filter:blur(10px);border-radius:var(--radius-xl);padding:var(--spacing-lg);box-shadow:var(--shadow-lg);border:1px solid rgba(0,0,0,.3)}.header-icon{font-size:2.5rem;background:linear-gradient(135deg,#aaa 0,#ccc 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-bottom:var(--spacing-xs)}.title{font-size:2rem;font-weight:700;background:linear-gradient(135deg,#aaa 0,#ccc 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-bottom:var(--spacing-xs)}.subtitle{color:var(--text-secondary);font-size:1.1rem;font-weight:300}.card{background:var(--bg-card);backdrop-filter:blur(10px);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);border:1px solid rgba(0,0,0,.3);margin-bottom:var(--spacing-lg);overflow:hidden;transition:all var(--transition-normal)}.card:hover{background:var(--bg-card-hover);transform:translateY(-2px);box-shadow:var(--shadow-xl)}.card-header{background:var(--card-header-gradient);padding:var(--spacing-md);border-bottom:1px solid rgba(0,0,0,.3);display:flex;align-items:center;gap:var(--spacing-sm)}.card-header i{font-size:1.2rem;color:var(--text-primary)}.card-header h2{font-size:1.3rem;font-weight:600;color:var(--text-primary)}.card-body{padding:var(--spacing-lg)}.update-notice{background:linear-gradient(135deg,rgba(44,62,80,.2),rgba(52,73,94,.2));border:1px solid rgba(0,0,0,.4);border-radius:var(--radius-md);padding:var(--spacing-md);margin-bottom:var(--spacing-lg);display:flex;align-items:center;gap:var(--spacing-sm)}.update-notice i{color:#999;font-size:1.1rem}.input-section{margin-bottom:var(--spacing-lg)}.input-label{display:flex;align-items:center;gap:var(--spacing-sm);margin-bottom:var(--spacing-sm);font-weight:500;color:var(--text-primary)}.input-wrapper{position:relative;margin-bottom:var(--spacing-sm)}.input-field{width:100%;padding:var(--spacing-md);padding-right:3rem;background:var(--bg-input);border:2px solid rgba(0,0,0,.3);border-radius:var(--radius-md);color:var(--text-primary);font-size:1rem;transition:all var(--transition-normal)}.input-field:focus{outline:0;border-color:#1a1a1a;background:rgba(255,255,255,.1);box-shadow:0 0 0 3px rgba(0,0,0,.2)}.input-field::placeholder{color:var(--text-muted)}.input-icon{position:absolute;right:var(--spacing-md);top:50%;transform:translateY(-50%);color:var(--text-muted);transition:color var(--transition-fast)}.input-field:focus+.input-icon{color:#1a1a1a}.example-text{display:flex;align-items:flex-start;gap:var(--spacing-sm);color:var(--text-muted);font-size:.9rem;line-height:1.4}.example-text i{color:#999;margin-top:2px;flex-shrink:0}.status-display{margin:var(--spacing-md) 0;padding:var(--spacing-md);border-radius:var(--radius-md);font-weight:500;text-align:center;transition:all var(--transition-normal)}.status-display.info{background:linear-gradient(135deg,rgba(44,62,80,.2),rgba(52,73,94,.2));border:1px solid rgba(0,0,0,.4);color:#b8c5d6}.status-display.error{background:linear-gradient(135deg,rgba(52,73,94,.2),rgba(74,111,165,.2));border:1px solid rgba(0,0,0,.4);color:#fff}.button-group{display:flex;flex-wrap:wrap;gap:var(--spacing-md);justify-content:center}.btn{display:flex;align-items:center;gap:var(--spacing-sm);padding:var(--spacing-md) var(--spacing-lg);border:none;border-radius:var(--radius-md);font-size:1rem;font-weight:600;cursor:pointer;transition:all var(--transition-normal);position:relative;overflow:hidden;min-width:160px;justify-content:center;text-decoration:none}.btn::before{content:'';position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.2),transparent);transition:left var(--transition-slow)}.btn:hover::before{left:100%}.btn-primary{background:var(--primary-gradient);color:#fff;box-shadow:var(--shadow-md)}.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg)}.btn-secondary{background:var(--secondary-gradient);color:#fff;box-shadow:var(--shadow-md)}.btn-secondary:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg)}.btn-accent{background:var(--accent-gradient);color:#fff;box-shadow:var(--shadow-md)}.btn-accent:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg)}.btn small{font-size:.8rem;opacity:.8;margin-left:var(--spacing-xs)}.result-content{background:var(--bg-input);border-radius:var(--radius-md);padding:var(--spacing-lg);border:1px solid rgba(0,0,0,.3);font-family:'Courier New',monospace;line-height:1.8;white-space:pre-wrap}.tutorial-container{text-align:center}.tutorial-container img{max-width:100%;height:auto;border-radius:var(--radius-md);box-shadow:var(--shadow-md);transition:transform var(--transition-normal)}.tutorial-container img:hover{transform:scale(1.02)}.footer{margin-top:var(--spacing-xl);padding:var(--spacing-lg);background:var(--bg-card);backdrop-filter:blur(10px);border-radius:var(--radius-lg);border:1px solid rgba(0,0,0,.3)}.footer-content{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:var(--spacing-md)}.footer-section{text-align:center}.copyright{font-weight:600;margin-bottom:var(--spacing-xs)}.tech-info{color:var(--text-muted);font-size:.9rem}.contact-info{display:flex;align-items:center;gap:var(--spacing-sm);color:var(--text-secondary)}.contact-info a{color:#aaa;text-decoration:none;transition:color var(--transition-fast)}.contact-info a:hover{color:#ccc}.modal{display:none;position:fixed;z-index:1000;left:0;top:0;width:100%;height:100%;overflow:auto;background-color:rgba(0,0,0,.7);backdrop-filter:blur(5px);animation:fadeIn var(--transition-normal)}.modal.show{display:flex;align-items:center;justify-content:center}.modal-content{background:var(--bg-card);backdrop-filter:blur(10px);border-radius:var(--radius-lg);border:1px solid rgba(0,0,0,.3);box-shadow:var(--shadow-xl);width:90%;max-width:600px;max-height:90vh;overflow-y:auto;animation:slideDown var(--transition-normal)}.modal-header{display:flex;justify-content:space-between;align-items:center;padding:var(--spacing-lg);background:var(--card-header-gradient);border-radius:var(--radius-lg) var(--radius-lg) 0 0;border-bottom:1px solid rgba(0,0,0,.3)}.modal-header h2{margin:0;display:flex;align-items:center;gap:var(--spacing-sm);font-size:1.5rem}.modal-close{background:0 0;border:none;color:var(--text-primary);font-size:1.5rem;cursor:pointer;padding:var(--spacing-xs);border-radius:var(--radius-sm);transition:background var(--transition-fast);display:flex;align-items:center;justify-content:center;width:32px;height:32px}.modal-close:hover{background:rgba(255,255,255,.1)}.modal-body{padding:var(--spacing-lg)}.modal-input-group{margin-bottom:var(--spacing-md)}.modal-input-group label{display:flex;align-items:center;gap:var(--spacing-xs);margin-bottom:var(--spacing-xs);color:var(--text-secondary);font-weight:500}.modal-input{width:100%;padding:var(--spacing-sm);background:var(--bg-input);border:1px solid rgba(0,0,0,.3);border-radius:var(--radius-sm);color:var(--text-primary);font-size:1rem;transition:all var(--transition-fast)}.modal-input:focus{outline:0;border-color:var(--accent-color);box-shadow:0 0 0 3px rgba(74,111,165,.2)}.subscription-status{background:var(--bg-input);border-radius:var(--radius-md);padding:var(--spacing-md);margin-bottom:var(--spacing-md);border:1px solid rgba(0,0,0,.3)}.status-header{display:flex;align-items:center;gap:var(--spacing-xs);margin-bottom:var(--spacing-sm);color:var(--text-secondary);font-weight:600}.numbers-display{display:flex;flex-direction:column;gap:var(--spacing-sm)}.number-group{background:rgba(255,255,255,.1);padding:var(--spacing-sm);border-radius:var(--radius-sm);border:1px solid rgba(255,255,255,.1)}.number-group-label{font-weight:600;color:var(--text-secondary);margin-bottom:var(--spacing-xs);font-size:.9rem}.number-list{display:flex;flex-wrap:wrap;gap:var(--spacing-xs)}.number-item{background:var(--accent-color);color:#fff;padding:4px 8px;border-radius:4px;font-weight:600;font-size:.9rem;min-width:28px;text-align:center}.subscription-message{margin-top:var(--spacing-md);padding:var(--spacing-sm);border-radius:var(--radius-sm);display:none}.subscription-message.success{background:rgba(40,167,69,.2);border:1px solid rgba(40,167,69,.5);color:#28a745;display:block}.subscription-message.error{background:rgba(220,53,69,.2);border:1px solid rgba(220,53,69,.5);color:#dc3545;display:block}.subscription-message.info{background:rgba(0,123,255,.2);border:1px solid rgba(0,123,255,.5);color:#007bff;display:block}@keyframes fadeIn{from{opacity:0}to{opacity:1}}@keyframes slideDown{from{transform:translateY(-50px);opacity:0}to{transform:translateY(0);opacity:1}}@media (max-width:768px){.main-container{padding:var(--spacing-md)}.title{font-size:2rem}.subtitle{font-size:1rem}.button-group{flex-direction:column;align-items:stretch}.btn{min-width:auto}.footer-content{flex-direction:column;text-align:center}.example-text{font-size:.8rem}.result-content{font-size:.8rem;line-height:1.6}}@media (max-width:480px){.header-content{padding:var(--spacing-lg)}.card-body{padding:var(--spacing-md)}.input-field{padding:var(--spacing-sm);padding-right:2.5rem}.btn{padding:var(--spacing-sm) var(--spacing-md);font-size:.9rem}}@keyframes pulse{0%,100%{opacity:1}50%{opacity:.5}}.loading{animation:pulse 2s infinite}.success{color:#888}.error{color:#666}.warning{color:#777}::-webkit-scrollbar{width:8px}::-webkit-scrollbar-track{background:rgba(255,255,255,.1);border-radius:4px}::-webkit-scrollbar-thumb{background:linear-gradient(135deg,#555,#666);border-radius:4px}::-webkit-scrollbar-thumb:hover{background:linear-gradient(135deg,#666,#777)}