*{box-sizing:border-box}body{line-height:1.6;color:#333}.faq-hero{background:linear-gradient(135deg,#7ab261,#3c8a19);padding:80px 0;position:relative;overflow:hidden}.faq-hero:before{content:"";position:absolute;top:0;left:0;right:0;bottom:0;background:url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.1'%3E%3Ccircle cx='30' cy='30' r='2'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E") repeat;opacity:.3}.hero-content{position:relative;z-index:2}.hero-title{font-size:3.5rem;font-weight:700;color:white;margin-bottom:1rem;text-shadow:0 2px 4px rgba(0,0,0,.1)}.hero-subtitle{font-size:1.25rem;color:rgba(255,255,255,.9);margin-bottom:2rem;max-width:600px;margin-left:auto;margin-right:auto}.hero-divider{width:300px;height:2px;background:linear-gradient(90deg,#ffffff,#ffffff);margin:0 auto;border-radius:2px}.faq-section{padding:80px 0;background:#f8fafc}.faq-section:nth-child(2n){background:white}.section-header{text-align:center;margin-bottom:60px}.section-icon{width:80px;height:80px;background:linear-gradient(135deg,#67b455,#7ab261);border-radius:50%;display:flex;align-items:center;justify-content:center;margin:0 auto 30px;box-shadow:0 10px 30px rgba(103,180,85,.3);transform:translateY(0);transition:all .3s ease}.section-icon:hover{transform:translateY(-5px);box-shadow:0 15px 40px rgba(103,180,85,.4)}.section-icon i{font-size:2rem;color:white}.section-title{font-size:2.5rem;font-weight:700;color:#2d3748;margin-bottom:15px;position:relative}.section-subtitle{font-size:1.1rem;color:#718096;max-width:500px;margin:0 auto}.faq-card{background:white;border-radius:20px;box-shadow:0 20px 60px rgba(0,0,0,.1);padding:40px;position:relative;overflow:hidden}.faq-card:before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(90deg,#67b455,#7ab261,#60b53a)}.faq-container{display:flex;flex-direction:column;gap:20px}.accordion{--bs-accordion-border-radius:0;--bs-accordion-border-color:transparent}.accordion-item{border:none;margin-bottom:20px;border-radius:15px!important;overflow:hidden;box-shadow:0 5px 20px rgba(0,0,0,.08);transition:all .3s ease}.accordion-item:hover{transform:translateY(-2px);box-shadow:0 10px 30px rgba(0,0,0,.12)}.accordion-button{background:linear-gradient(135deg,#f7fafc,#edf2f7);color:#2d3748;border:none;padding:25px 30px;font-weight:600;font-size:1.1rem;text-align:left;position:relative;border-radius:15px!important;transition:all .3s ease;display:flex;align-items:center}.accordion-button:not(.collapsed){background:linear-gradient(135deg,#67b455,#7ab261);color:#fff!important;box-shadow:none!important}.accordion-button:focus{border-color:transparent}.accordion-button:after{background-image:url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%232d3748'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");transform:rotate(-90deg);transition:transform .3s ease;width:1.5rem;height:1.5rem;margin-left:auto;flex-shrink:0}.accordion-button:not(.collapsed):after{background-image:url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='white'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");transform:rotate(0deg)}.accordion-button i{color:#67b455;font-size:1.2rem;flex-shrink:0}.accordion-button:not(.collapsed) i{color:white}.accordion-body{padding:30px;background:white;color:#4a5568;line-height:1.7;font-size:1rem}.accordion-body a{color:#67b455;text-decoration:none;font-weight:600;transition:color .3s ease}.accordion-body a:hover{color:#559e45;text-decoration:underline}.highlight-box{background:linear-gradient(135deg,#e6fffa,#b2f5ea);border-left:4px solid #67b455;padding:20px;border-radius:10px;display:flex;align-items:center;gap:15px;font-weight:600;color:#2d3748}.highlight-box i{color:#67b455;font-size:1.5rem}.warning-box{background:linear-gradient(135deg,#fff5f5,#fed7d7);border-left:4px solid #f56565;padding:20px;border-radius:10px;display:flex;align-items:flex-start;gap:15px}.warning-box i{color:#f56565;font-size:1.5rem;margin-top:2px}.alert-box{background:linear-gradient(135deg,#fef5e7,#fbd38d);border-left:4px solid #ed8936;padding:20px;border-radius:10px;display:flex;align-items:center;gap:15px;font-weight:600}.alert-box i{color:#ed8936;font-size:1.5rem}.definition-box{background:linear-gradient(135deg,#f0fff4,#c6f6d5);border-radius:15px;padding:25px;border-left:4px solid #67b455}.definition-box h6{color:#2d3748;font-weight:700;margin-bottom:15px;font-size:1.1rem}.efficiency-stat{display:flex;align-items:center;gap:15px;margin-top:20px;padding:15px;background:white;border-radius:10px;box-shadow:0 2px 10px rgba(0,0,0,.1)}.stat-number{font-size:2rem;font-weight:700;color:#67b455}.stat-label{color:#718096;font-size:.9rem;font-weight:600}.aqi-values h6{color:#2d3748;font-weight:700}.aqi-list{display:grid;grid-gap:10px;gap:10px;margin-top:20px}.aqi-item{display:flex;align-items:center;justify-content:space-between;padding:15px 20px;border-radius:10px;font-weight:600;transition:transform .2s ease}.aqi-item:hover{transform:translateX(5px)}.aqi-item.good{background:linear-gradient(135deg,#f0fff4,#c6f6d5);color:#22543d}.aqi-item.moderate{background:linear-gradient(135deg,#fffbf0,#fbd38d);color:#744210}.aqi-item.unhealthy-groups{background:linear-gradient(135deg,#fff5f0,#fed7cc);color:#7b341e}.aqi-item.unhealthy{background:linear-gradient(135deg,#fff5f5,#fed7d7);color:#742a2a}.aqi-item.very-unhealthy{background:linear-gradient(135deg,#faf5ff,#e9d8fd);color:#553c9a}.aqi-item.hazardous{background:linear-gradient(135deg,#f7fafc,#e2e8f0);color:#2d3748}.aqi-range{font-weight:700;font-size:1.1rem}.aqi-label{font-weight:600}.feature-highlight{background:linear-gradient(135deg,#f0fff4,#c6f6d5);border-radius:15px;padding:25px;border-left:4px solid #67b455}.feature-stat{display:flex;align-items:center;gap:15px;margin-bottom:20px;padding:20px;background:white;border-radius:10px;box-shadow:0 2px 10px rgba(0,0,0,.1)}.feature-stat .stat-number{font-size:3rem;font-weight:700;color:#67b455}.feature-stat .stat-label{color:#718096;font-weight:600}.section-divider{padding:40px 0;background:linear-gradient(135deg,#f7fafc,#edf2f7)}.divider-line{height:2px;background:linear-gradient(90deg,transparent,#67b455,transparent);border-radius:1px}.faq-cta{background:linear-gradient(135deg,#d4d4d4,#fcfcfc);padding:80px 0;color:white;text-align:center}.cta-content h3{font-size:2.5rem;font-weight:700;margin-bottom:20px;color:#434242}.cta-content p{font-size:1.2rem;margin-bottom:30px;color:#434242;opacity:.9}.btn-primary{background:linear-gradient(135deg,#67b455,#7ab261);border:none;padding:15px 40px;font-size:1.1rem;font-weight:600;border-radius:50px;transition:all .3s ease;box-shadow:0 10px 30px rgba(103,180,85,.3)}.btn-primary:hover{transform:translateY(-3px);box-shadow:0 15px 40px rgba(103,180,85,.4);background:linear-gradient(135deg,#559e45,#67b455)}.container{max-width:1200px;margin:0 auto;padding:0 20px}@media (max-width:992px){.faq-heading{font-size:32px;margin-bottom:30px}.accordion-button{padding:18px;font-size:16px}.accordion-body{padding:20px;font-size:15px}}@media (max-width:768px){.hero-title{font-size:2.5rem}.hero-subtitle{font-size:1.1rem}.section-title{font-size:2rem}.faq-section{padding:60px 0}.faq-card{padding:25px;border-radius:15px}.accordion-button{padding:20px;font-size:1rem}.accordion-body{padding:20px}.section-icon{width:60px;height:60px;margin-bottom:20px}.section-icon i{font-size:1.5rem}.aqi-item{gap:5px}.aqi-item,.feature-stat{flex-direction:column;text-align:center}.feature-stat .stat-number{font-size:2.5rem}.faq-heading{font-size:28px;margin-bottom:25px}.accordion-button{padding:16px;font-size:15px}.accordion-body{padding:18px;font-size:14px}.faq-section{padding-top:40px!important}.col-lg-8.offset-lg-2,.col-md-10.offset-md-1{padding:0 15px}}@media (max-width:576px){.hero-title{font-size:2rem}.section-title{font-size:1.8rem}.accordion-button{padding:15px;font-size:.95rem}.accordion-body{padding:15px;font-size:.9rem}.faq-card{padding:20px}.cta-content h3{font-size:2rem}.btn-primary{padding:12px 30px;font-size:1rem}.faq-heading{font-size:24px;line-height:1.3}.accordion-button{padding:14px;font-size:14px;line-height:1.4}.accordion-body{padding:16px;font-size:13px}}.accordion-collapse{transition:all .3s ease}.accordion-button:focus{outline:none;box-shadow:0 0 0 3px rgba(103,180,85,.2)}@keyframes fadeInUp{0%{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}.faq-card{animation:fadeInUp .6s ease-out}.section-header{animation:fadeInUp .6s ease-out .2s both}.accordion-button:hover{background-color:#f2f2f2}.accordion-button:not(.collapsed):hover{background-color:#2980b9}