@keyframes slideDown{0%{opacity:0;transform:translateY(-20px)}to{opacity:1;transform:translateY(0)}}@keyframes popIn{0%{opacity:0;transform:scale(.9)}to{opacity:1;transform:scale(1)}}:root{--primary:#ff5e00;--secondary:#ff2a00;--accent:#ff9600;--card-bg:#fff7e6;--text-dark:#333;--success:#4CAF50}*,body{margin:0;padding:0}*{box-sizing:border-box;font-family:"Poppins","Segoe UI",Tahoma,Geneva,Verdana,sans-serif}body{background:linear-gradient(135deg,#f5f7fa 0,#c3cfe2 100%);min-height:100vh;color:var(--text-dark);display:flex;flex-direction:column;overflow-x:hidden;background-attachment:fixed;background-size:cover}header{background:linear-gradient(135deg,#fff 0,#f8f9fa 100%);padding:20px;border-bottom:2px solid var(--primary);box-shadow:0 2px 10px rgba(0,0,0,.05)}.header-content{max-width:1000px;margin:0 auto;justify-content:space-between;gap:20px}.header-content,.logo,.logo-icon{display:flex;align-items:center}.logo{gap:12px}.logo-icon{background:linear-gradient(135deg,var(--secondary),var(--primary));width:48px;height:48px;border-radius:50%;justify-content:center;font-size:24px;color:#fff;box-shadow:0 4px 15px rgba(255,42,0,.3)}.logo-text{font-size:22px;font-weight:700;color:var(--primary);text-transform:uppercase;letter-spacing:1px}.back-link{color:var(--primary);text-decoration:none;font-weight:600;padding:8px 16px;border-radius:25px;transition:all .3s ease;border:2px solid var(--primary)}.back-link:hover{background:rgba(255,94,0,.1);transform:translateY(-2px)}.main{flex:1;display:flex;align-items:center;justify-content:center;padding:30px 20px}.container{border-radius:20px;padding:40px;max-width:550px;width:100%;box-shadow:0 20px 60px rgba(0,0,0,.15);border:1px solid rgba(255,94,0,.1)}.title{text-align:center;margin-bottom:30px}.title h1{font-size:2.2rem;color:var(--primary);margin-bottom:8px;font-weight:800}.title p{color:#666;font-size:.95rem}.settings-panel{background:var(--card-bg);border:2px solid var(--primary);border-radius:12px;padding:20px;margin-bottom:25px;display:none}.settings-panel.show{display:block}.settings-group{margin-bottom:15px}.settings-group:last-child{margin-bottom:0}.settings-group label{display:block;font-size:.85rem;font-weight:600;color:var(--primary);margin-bottom:6px;text-transform:uppercase;letter-spacing:.5px}.settings-group input,.settings-group select{width:100%;padding:10px 12px;border:2px solid rgba(255,94,0,.3);border-radius:8px;font-size:.9rem;font-weight:600;color:var(--text-dark);background:#fff}.settings-group input:focus,.settings-group select:focus{outline:0;border-color:var(--primary);box-shadow:0 0 0 3px rgba(255,94,0,.1)}.input-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}.timer-display{background:linear-gradient(135deg,var(--card-bg),#fff9f0);border:3px solid var(--primary);border-radius:16px;padding:40px 20px;text-align:center;margin:25px 0;box-shadow:inset 0 2px 5px rgba(0,0,0,.05)}.timer-value{font-size:4rem;font-weight:800;color:var(--primary);font-family:"Courier New",monospace;letter-spacing:2px;text-shadow:0 2px 4px rgba(0,0,0,.1)}.session-info{font-size:.9rem;color:#666;margin-top:12px;font-weight:500}.stats-grid{display:grid;grid-template-columns:1fr 1fr;gap:15px;margin:25px 0}.stat-card{background:linear-gradient(135deg,#f0f7ff,#f9f0ff);border:2px solid rgba(255,94,0,.15);border-radius:12px;padding:15px;text-align:center;transition:all .3s ease}.stat-card:hover{transform:translateY(-3px);box-shadow:0 5px 15px rgba(0,0,0,.08);border-color:var(--accent)}.stat-label{font-size:.75rem;color:#999;text-transform:uppercase;letter-spacing:.5px;font-weight:600;margin-bottom:6px}.stat-value{font-size:1.6rem;font-weight:700;color:var(--primary);font-family:"Courier New",monospace}.controls{display:flex;gap:12px;margin:25px 0;flex-wrap:wrap;justify-content:center}.btn{padding:12px 24px;border:0;border-radius:25px;font-weight:600;cursor:pointer;transition:all .3s ease;font-size:.95rem;display:inline-flex;align-items:center;gap:8px;box-shadow:0 4px 12px rgba(0,0,0,.1)}.btn-primary,.btn-secondary{flex:1;justify-content:center;min-width:100px}.btn-primary{background:linear-gradient(135deg,var(--primary),var(--secondary));color:#fff}.btn-primary:hover,.prompt-box button:hover{transform:translateY(-3px);box-shadow:0 8px 20px rgba(255,94,0,.3)}.btn-secondary{background:#fff;color:var(--primary);border:2px solid var(--primary)}.btn-secondary:hover{background:rgba(255,94,0,.05);transform:translateY(-3px)}.btn-small{padding:8px 16px;font-size:.85rem;min-width:auto;flex:none}.btn-tertiary{background:#f0f0f0;color:var(--primary);border:1px solid #ddd}.btn-tertiary:hover{background:#e8e8e8}.music-control,.music-toggle{display:flex;align-items:center}.music-control{gap:12px;background:#f8f9fa;padding:15px;border-radius:12px;margin:20px 0;border:2px solid #eee}.music-toggle{background:#fff;border:2px solid var(--primary);color:var(--primary);width:40px;height:40px;border-radius:50%;cursor:pointer;font-size:20px;justify-content:center;transition:all .3s ease;flex-shrink:0}.music-toggle:hover{background:rgba(255,94,0,.1);transform:scale(1.05)}.music-toggle.active{background:linear-gradient(135deg,var(--primary),var(--secondary));color:#fff;border-color:var(--primary)}.volume-slider{flex:1;height:6px;border-radius:3px;background:#ddd;outline:0;-webkit-appearance:none;appearance:none}.volume-slider::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;width:16px;height:16px;border-radius:50%;background:var(--primary);cursor:pointer;box-shadow:0 2px 5px rgba(0,0,0,.2)}.volume-slider::-moz-range-thumb{width:16px;height:16px;border-radius:50%;background:var(--primary);cursor:pointer;border:0;box-shadow:0 2px 5px rgba(0,0,0,.2)}.session-report,footer{padding:20px;text-align:center}.session-report{background:linear-gradient(135deg,#f0f7ff,#f9f0ff);border:2px solid var(--accent);border-radius:12px;margin:20px 0;display:none}.session-report.show{display:block;animation:slideDown .5s ease-out}.feature-card h3,.report-title,.step h3{font-size:1.3rem;color:var(--primary);font-weight:700;margin-bottom:15px}.report-content{font-size:.9rem;color:#555;line-height:1.8}.efficiency-meter{margin:15px 0;height:8px;background:#ddd;border-radius:4px;overflow:hidden}.efficiency-fill{height:100%;background:linear-gradient(90deg,var(--primary),var(--accent));border-radius:4px;transition:width .5s ease}.prompt-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,.5);display:none;flex-direction:column;align-items:center;justify-content:center;z-index:1000}.prompt-overlay.show{display:flex}.prompt-box{background:#fff;border-radius:16px;padding:30px;max-width:400px;text-align:center;box-shadow:0 20px 60px rgba(0,0,0,.3);animation:popIn .3s ease-out}.prompt-box h2,.what-section h2{color:var(--primary);font-size:1.5rem;margin-bottom:15px}.prompt-box p{color:#666;margin-bottom:20px}.prompt-box button{background:linear-gradient(135deg,var(--primary),var(--secondary));color:#fff;border:0;padding:12px 30px;border-radius:25px;font-weight:600;cursor:pointer;transition:all .3s ease;box-shadow:0 4px 12px rgba(255,94,0,.2)}.sound-select{display:flex;gap:8px;flex-wrap:wrap;margin-top:10px}.sound-btn,footer a{color:var(--primary);font-weight:600}.sound-btn{padding:6px 12px;border:2px solid 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h2{font-size:2rem;color:var(--primary);margin-bottom:30px;text-align:center;font-weight:800}.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:20px}.feature-card{background:#fff;border-radius:16px;padding:30px;text-align:center;box-shadow:0 10px 30px rgba(0,0,0,.08);transition:all .3s ease;border:2px solid transparent}.feature-card:hover{transform:translateY(-8px);box-shadow:0 20px 50px rgba(0,0,0,.15)}.feature-icon{font-size:3rem;margin-bottom:15px}.feature-card h3,.step h3{font-size:1.2rem;margin-bottom:10px}.feature-card p,.step p{color:#666;font-size:.95rem;line-height:1.6}.how-works-section{background:linear-gradient(135deg,var(--card-bg) 0%,#fff9f0 100%);border-radius:20px;padding:40px;margin-bottom:40px;border:2px solid var(--primary)}.steps-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:20px}.step{background:#fff;border-radius:12px;padding:25px;text-align:center;box-shadow:0 5px 15px rgba(0,0,0,.05)}.step-number{background:linear-gradient(135deg,var(--primary),var(--secondary));color:#fff;width:50px;height:50px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:1.5rem;font-weight:700;margin:0 auto 15px;box-shadow:0 4px 15px rgba(255,94,0,.3)}.step h3{color:var(--text-dark);font-size:1rem;margin-bottom:8px}.step p{font-size:.9rem;line-height:1.5}.faq-section{background:#fff;border-radius:20px;padding:40px;margin-bottom:2rem;box-shadow:0 20px 60px rgba(0,0,0,.1)}.faq-item{margin-bottom:20px;border-bottom:1px solid #eee;padding-bottom:20px}.faq-item:last-child{border-bottom:none;margin-bottom:0;padding-bottom:0}.faq-question,.why-card h3,.why-section h2{color:var(--primary);font-size:1.1rem;font-weight:700}.faq-question{cursor:pointer;display:flex;justify-content:space-between;align-items:center;transition:all .3s ease}.faq-question:hover{color:var(--secondary)}.faq-toggle{font-size:1.3rem;transition:transform .3s ease}.faq-toggle.open{transform:rotate(180deg)}.faq-answer{color:#555;font-size:.95rem;line-height:1.7;margin-top:12px;max-height:0;overflow:hidden;transition:max-height .3s ease}.faq-answer.open{max-height:500px}.why-section{background:linear-gradient(135deg,var(--card-bg) 0%,#fff9f0 100%);border-radius:20px;padding:40px;margin-bottom:40px;border:2px solid var(--accent)}.why-section h2{font-size:2rem;margin-bottom:25px;text-align:center;font-weight:800}.why-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:20px}.why-card{background:#fff;border-radius:12px;padding:20px;box-shadow:0 5px 15px rgba(0,0,0,.05)}.why-card h3{margin-bottom:10px}.why-card p{color:#666;font-size:.9rem;line-height:1.6}.cta-button{display:inline-block;background:linear-gradient(135deg,var(--primary),var(--secondary));color:#fff;padding:15px 40px;border-radius:25px;text-decoration:none;font-weight:700;transition:all .3s ease;box-shadow:0 4px 15px rgba(255,94,0,.3);margin-top:20px}.cta-button:hover{transform:translateY(-3px);box-shadow:0 8px 25px rgba(255,94,0,.4)}@media (max-width:768px){.container{padding:25px}.title h1{font-size:1.8rem}.timer-value{font-size:3rem}.input-row{grid-template-columns:1fr}.controls{flex-direction:column}.btn{width:100%}.info-section{padding:40px 15px}.faq-section,.how-works-section,.what-section,.why-section{padding:25px}.faq-section h2,.features-section h2,.how-works-section h2,.what-section h2,.why-section h2{font-size:1.5rem}.features-grid,.steps-grid,.why-grid{grid-template-columns:1fr}}@media (max-width:480px){.container{padding:20px;margin:15px}.timer-value{font-size:2.5rem}.stat-value{font-size:1.3rem}.title h1{font-size:1.5rem}.header-content{flex-direction:column;gap:12px}}.info-section{padding:60px 20px;margin-bottom:2rem;background:0 0!important}.main{background:0 0}.container{background:#fff}@media (prefers-color-scheme:dark){body{background:linear-gradient(135deg,#1a1a1a 0,#2d2d2d 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