*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{--brand:#009a44;--brand-dark:#007a33;--brand-light:#33b864;--dark:#1a2938;--dark-soft:#2c3e50;--gray:#6b7280;--gray-light:#f3f4f6;--white:#fff;--shadow:0 1px 3px rgba(0,0,0,.1);--shadow-lg:0 10px 40px rgba(0,0,0,.12);--radius:8px;--radius-lg:16px;--transition:all .3s ease}
html{scroll-behavior:smooth}
body{font-family:'Inter',system-ui,-apple-system,sans-serif;color:#374151;background:#f8f9fa;line-height:1.6;padding-top:80px}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto;display:block}
.container{max-width:1200px;margin:0 auto;padding:0 20px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);border:0}

/* Header */
header{position:fixed;top:0;left:0;right:0;z-index:1000;background:var(--white);box-shadow:0 2px 10px rgba(0,0,0,.08)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:80px}
.logo img{height:56px;width:auto}
nav{display:flex;align-items:center;gap:4px}
nav a{padding:8px 14px;font-size:14px;font-weight:500;color:var(--dark);border-radius:var(--radius);transition:var(--transition)}
nav a:hover,nav a.active{color:var(--brand)}
nav a.active{font-weight:700}
nav a.bayi-link{color:var(--brand);border:1px solid var(--brand);padding:8px 16px}
nav a.bayi-link:hover{background:var(--brand);color:var(--white)}
.mobile-toggle{display:none;background:none;border:none;cursor:pointer;padding:8px}
.mobile-toggle span{display:block;width:24px;height:2px;background:var(--dark);margin:5px 0;transition:var(--transition)}
.mobile-toggle.open span:nth-child(1){transform:translateY(7px)rotate(45deg)}
.mobile-toggle.open span:nth-child(2){opacity:0}
.mobile-toggle.open span:nth-child(3){transform:translateY(-7px)rotate(-45deg)}

/* Hero/Slider */
.hero{position:relative;height:75vh;min-height:400px;overflow:hidden;background:var(--dark)}
.hero-slide{position:absolute;inset:0;opacity:0;transition:opacity 1s}
.hero-slide.active{opacity:1;z-index:2}
.hero-slide img{width:100%;height:100%;object-fit:cover}
.hero-overlay{position:absolute;inset:0;background:linear-gradient(135deg,rgba(26,41,56,.85) 0%,rgba(26,41,56,.4) 100%);z-index:3;display:flex;align-items:center;justify-content:center;text-align:center;padding:20px}
.hero-content{max-width:700px}
.hero-content h1{font-size:clamp(2rem,5vw,3.5rem);font-weight:800;color:var(--white);margin-bottom:16px;line-height:1.2}
.hero-content p{font-size:clamp(1rem,2vw,1.2rem);color:rgba(255,255,255,.85);margin-bottom:32px}
.hero-arrow{position:absolute;top:50%;z-index:5;background:rgba(0,0,0,.3);color:var(--white);border:none;width:50px;height:50px;border-radius:50%;cursor:pointer;font-size:24px;transition:var(--transition);display:flex;align-items:center;justify-content:center}
.hero-arrow:hover{background:rgba(0,0,0,.6)}
.hero-arrow.prev{left:20px;transform:translateY(-50%)}
.hero-arrow.next{right:20px;transform:translateY(-50%)}

/* Buttons */
.btn{display:inline-block;padding:14px 32px;font-size:16px;font-weight:600;border-radius:50px;transition:var(--transition);text-align:center;border:none;cursor:pointer}
.btn-primary{background:var(--brand);color:var(--white)}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-2px);box-shadow:0 8px 25px rgba(0,154,68,.35)}
.btn-outline{background:transparent;color:var(--white);border:2px solid var(--white)}
.btn-outline:hover{background:var(--white);color:var(--dark)}
.btn-green{background:var(--brand);color:var(--white)}
.btn-green:hover{background:var(--brand-dark);transform:translateY(-2px)}

/* Sections */
section{padding:80px 0}
section.alt{background:var(--white)}
.section-title{text-align:center;margin-bottom:48px}
.section-title h2{font-size:clamp(1.8rem,3vw,2.5rem);font-weight:800;color:var(--dark);margin-bottom:12px}
.section-title p{font-size:1.05rem;color:var(--gray);max-width:600px;margin:0 auto}

/* Cards */
.card{background:var(--white);border-radius:var(--radius-lg);box-shadow:var(--shadow);transition:var(--transition);overflow:hidden}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}

/* Grids */
.grid-4{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:24px}
.grid-3{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:24px}
.grid-2{display:grid;grid-template-columns:repeat(auto-fill,minmax(480px,1fr));gap:32px}
.text-center{text-align:center}
.mt-4{margin-top:24px}
.mt-8{margin-top:48px}
.mb-4{margin-bottom:24px}
.mb-8{margin-bottom:48px}
.gap-4{gap:24px}

/* Brand Marquee */
.brand-marquee{overflow:hidden;padding:40px 0;background:var(--white)}
.brand-track{display:flex;animation:scroll 35s linear infinite;width:max-content}
.brand-track:hover{animation-play-state:paused}
.brand-track img{height:48px;margin:0 40px;opacity:.5;transition:var(--transition);flex-shrink:0}
.brand-track img:hover{opacity:.8}
@keyframes scroll{0%{transform:translateX(0)}100%{transform:translateX(-50%)}}

/* Page Header */
.page-header{background:linear-gradient(135deg,var(--dark) 0%,#1a2938 100%);padding:60px 0;text-align:center}
.page-header h1{font-size:clamp(2rem,4vw,3rem);font-weight:800;color:var(--white);margin-bottom:8px}
.page-header p{color:rgba(255,255,255,.7);font-size:1.1rem}

/* Content */
.content-box{background:var(--white);border-radius:var(--radius-lg);box-shadow:var(--shadow);padding:48px;max-width:900px;margin:0 auto}
.content-box p{margin-bottom:16px;color:#4b5563;font-size:1.05rem;line-height:1.8}
.content-box p:last-child{margin-bottom:0}

/* Product Card */
.product-card{display:flex;flex-direction:column}
.product-card .img-wrap{height:220px;display:flex;align-items:center;justify-content:center;padding:24px;background:#f9fafb}
.product-card .img-wrap img{max-height:180px;object-fit:contain;transition:var(--transition)}
.product-card:hover .img-wrap img{transform:scale(1.08)}
.product-card .body{padding:20px;flex:1;display:flex;flex-direction:column}
.product-card h3{font-size:1rem;font-weight:700;color:var(--dark);margin-bottom:8px;line-height:1.4}
.product-card p{font-size:.88rem;color:var(--gray);flex:1;margin-bottom:16px}
.product-card .price{font-size:1.2rem;font-weight:800;color:var(--brand);margin-bottom:12px}
.stock-badge{position:absolute;top:12px;right:12px;font-size:.75rem;font-weight:700;color:var(--white);padding:4px 10px;border-radius:20px}
.stock-badge.in-stock{background:#16a34a}
.stock-badge.out-of-stock{background:#dc2626}

/* Filter Buttons */
.filter-group{display:flex;flex-wrap:wrap;justify-content:center;gap:8px;margin-bottom:32px}
.filter-btn{padding:8px 20px;font-size:.9rem;font-weight:500;border-radius:50px;border:none;cursor:pointer;transition:var(--transition);background:var(--white);color:var(--gray);box-shadow:var(--shadow)}
.filter-btn:hover{color:var(--brand)}
.filter-btn.active{background:var(--brand);color:var(--white)}

/* Price List */
.price-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:20px}
.price-card{background:var(--white);border-radius:var(--radius-lg);box-shadow:var(--shadow);padding:24px;border-top:4px solid var(--brand);transition:var(--transition);position:relative}
.price-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.price-card h3{font-size:1.1rem;font-weight:700;color:var(--dark);margin-bottom:16px}
.price-card .year-badge{position:absolute;top:12px;right:14px;font-size:.8rem;color:rgba(0,0,0,.35);animation:blink 3.5s infinite}
@keyframes blink{0%,100%{opacity:.4}50%{opacity:.85}}
.price-card .dl-btn{display:inline-block;background:#2563eb;color:var(--white);padding:10px 20px;border-radius:50px;font-weight:600;font-size:.9rem;transition:var(--transition)}
.price-card .dl-btn:hover{background:#1d4ed8}

/* Reference Card */
.ref-card{background:var(--white);padding:24px;border-left:5px solid var(--brand);border-radius:0 var(--radius) var(--radius) 0;box-shadow:var(--shadow);transition:var(--transition)}
.ref-card:hover{transform:translateY(-4px)scale(1.01);box-shadow:var(--shadow-lg)}
.ref-card h3{font-size:1.05rem;font-weight:700;color:var(--dark);margin-bottom:6px}
.ref-card p{font-size:.9rem;color:#4b5563}

/* Group Companies */
.company-card{background:var(--white);border-radius:var(--radius-lg);padding:32px;text-align:center;position:relative;z-index:1;overflow:hidden;transition:var(--transition);max-width:520px;margin:0 auto}
.company-card::before{content:'';position:absolute;inset:-3px;z-index:-1;border-radius:inherit;background:linear-gradient(45deg,var(--brand),var(--dark),var(--brand-light),var(--dark));background-size:400% 400%;animation:gradient-rotate 8s ease infinite}
@keyframes gradient-rotate{0%{background-position:0% 50%}50%{background-position:100% 50%}100%{background-position:0% 50%}}
.company-card:hover{transform:translateY(-8px)}
.company-card .logo-wrap{height:130px;display:flex;align-items:center;justify-content:center;margin-bottom:20px}
.company-card .logo-wrap img{max-height:110px;object-fit:contain}
.company-card h3{font-size:1.1rem;font-weight:700;color:var(--dark);min-height:80px;display:flex;align-items:center;justify-content:center;margin-bottom:16px}
.company-card .info{text-align:left;font-size:.92rem;color:#4b5563;line-height:1.7}
.company-card .info strong{color:var(--dark)}

/* Contact */
.contact-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:24px}
.contact-card{background:var(--white);border-radius:var(--radius-lg);box-shadow:var(--shadow);padding:28px;text-align:center;transition:var(--transition)}
.contact-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.contact-card .icon{width:60px;height:60px;border-radius:50%;background:rgba(0,154,68,.1);color:var(--brand);display:flex;align-items:center;justify-content:center;margin:0 auto 16px;font-size:24px}
.contact-card h3{font-size:1rem;font-weight:700;color:var(--dark);margin-bottom:8px}
.contact-card p{font-size:.9rem;color:var(--gray)}

/* Form */
.form-group{margin-bottom:16px}
.form-group label{display:block;margin-bottom:6px;font-size:.9rem;font-weight:500;color:var(--dark)}
.form-group input,.form-group textarea{width:100%;padding:12px 16px;border:1px solid #d1d5db;border-radius:var(--radius);font-size:1rem;transition:var(--transition);font-family:inherit}
.form-group input:focus,.form-group textarea:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(0,154,68,.15)}

/* FAQ */
.faq-item{background:var(--white);border-radius:var(--radius);box-shadow:var(--shadow);margin-bottom:12px;overflow:hidden}
.faq-q{padding:16px 20px;font-weight:600;cursor:pointer;display:flex;justify-content:space-between;align-items:center;transition:var(--transition)}
.faq-q:hover{background:#f9fafb}
.faq-q .arrow{font-size:12px;transition:var(--transition)}
.faq-item.open .faq-q .arrow{transform:rotate(180deg)}
.faq-a{padding:0 20px;max-height:0;overflow:hidden;transition:max-height .3s ease,padding .3s ease}
.faq-item.open .faq-a{padding:0 20px 16px;max-height:300px}

/* Footer */
footer{background:var(--dark);color:#9ca3af;padding:48px 0 24px}
footer .grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:32px}
footer h3{font-size:1.1rem;font-weight:700;color:var(--white);padding-bottom:8px;border-bottom:2px solid var(--brand);display:inline-block;margin-bottom:16px}
footer p{font-size:.9rem;line-height:1.7}
footer ul{list-style:none}
footer ul li{margin-bottom:8px}
footer ul li a{font-size:.9rem;transition:var(--transition)}
footer ul li a:hover{color:var(--white)}
footer .bottom{border-top:1px solid rgba(255,255,255,.1);margin-top:32px;padding-top:24px;text-align:center;font-size:.85rem}

/* WhatsApp Float */
.whatsapp-float{position:fixed;bottom:24px;right:24px;z-index:999;background:#25d366;color:var(--white);width:60px;height:60px;border-radius:50%;display:flex;align-items:center;justify-content:center;box-shadow:0 4px 15px rgba(37,211,102,.4);transition:var(--transition)}
.whatsapp-float:hover{transform:scale(1.1);box-shadow:0 6px 25px rgba(37,211,102,.5)}
.whatsapp-float svg{width:28px;height:28px;fill:currentColor}

/* Cookie */
.cookie-banner{position:fixed;bottom:0;left:0;right:0;background:rgba(26,41,56,.95);color:var(--white);padding:16px 20px;z-index:9999;display:none;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}
.cookie-banner.show{display:flex}
.cookie-banner p{font-size:.85rem;flex:1;min-width:200px}
.cookie-banner a{text-decoration:underline;color:#9ca3af}
.cookie-banner button{background:var(--brand);color:var(--white);border:none;padding:8px 24px;border-radius:50px;font-weight:600;cursor:pointer;transition:var(--transition)}
.cookie-banner button:hover{background:var(--brand-dark)}

/* Services Grid */
.service-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:24px}
.service-card{background:var(--white);border-radius:var(--radius-lg);box-shadow:var(--shadow);padding:32px 24px;text-align:center;transition:var(--transition);border-bottom:3px solid transparent}
.service-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-bottom-color:var(--brand)}
.service-card .icon{font-size:40px;margin-bottom:16px;display:block}
.service-card h3{font-size:1.1rem;font-weight:700;color:var(--dark);margin-bottom:8px}
.service-card p{font-size:.9rem;color:var(--gray);line-height:1.6}

/* CTA Banner */
.cta-banner{background:linear-gradient(135deg,var(--brand) 0%,var(--brand-dark) 100%);padding:60px 20px;text-align:center;color:var(--white);border-radius:0}
.cta-banner h2{font-size:clamp(1.5rem,3vw,2.2rem);font-weight:800;margin-bottom:12px}
.cta-banner p{font-size:1.05rem;opacity:.9;margin-bottom:24px;max-width:600px;margin-left:auto;margin-right:auto}

/* Calculator */
.calc-wrap{display:grid;grid-template-columns:1fr 1fr;gap:32px}
.calc-form{background:var(--white);border-radius:var(--radius-lg);box-shadow:var(--shadow);padding:32px}
.calc-form label{display:block;font-size:.9rem;font-weight:500;color:var(--dark);margin-bottom:4px}
.calc-form input,.calc-form select{width:100%;padding:10px 14px;border:1px solid #d1d5db;border-radius:var(--radius);font-size:.95rem;margin-bottom:16px;transition:var(--transition)}
.calc-form input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(0,154,68,.15)}
.calc-form .radio-group{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:16px}
.calc-form .radio-group label{padding:8px 16px;border:1px solid #d1d5db;border-radius:var(--radius);cursor:pointer;font-size:.88rem;transition:var(--transition)}
.calc-form .radio-group label:has(input:checked){background:#d1fae5;border-color:#16a34a}
.calc-results{background:var(--white);border-radius:var(--radius-lg);box-shadow:var(--shadow);padding:32px;display:flex;flex-direction:column}
.calc-results .result-list{flex:1}
.calc-results ul{list-style:none}
.calc-results ul li{padding:10px 14px;background:#f9fafb;border-radius:var(--radius);margin-bottom:8px;font-size:.95rem}
.calc-results .total{font-size:1.3rem;font-weight:800;color:#16a34a;margin-top:24px;padding-top:16px;border-top:1px solid #e5e7eb}
@media(max-width:768px){.calc-wrap{grid-template-columns:1fr}}

/* Steps / Wizard */
.wizard{max-width:800px;margin:0 auto;background:var(--white);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);overflow:hidden}
.wizard-header{padding:32px;text-align:center;background:#f9fafb;border-bottom:1px solid #e5e7eb}
.wizard-header h1{font-size:1.5rem;font-weight:800;color:var(--dark)}
.wizard-header p{color:var(--gray);font-size:.95rem;margin-top:4px}
.wizard-body{padding:32px;min-height:350px}
.wizard-nav{display:flex;justify-content:space-between;padding:24px 32px;border-top:1px solid #e5e7eb}
.wizard-nav button{padding:12px 32px;font-weight:700;border-radius:50px;border:2px solid var(--brand);cursor:pointer;transition:var(--transition);font-size:1rem}
.wizard-nav .prev{background:transparent;color:var(--brand)}
.wizard-nav .prev:hover{background:var(--brand);color:var(--white)}
.wizard-nav .next{background:var(--brand);color:var(--white)}
.wizard-nav .next:disabled{opacity:.5;cursor:not-allowed}
.wizard-nav .next:not(:disabled):hover{background:var(--brand-dark)}
.step{display:none}
.step.active{display:block}

/* Quote Step */
.option-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:12px}
.option-card{border:2px solid #e5e7eb;border-radius:var(--radius);padding:16px;text-align:center;cursor:pointer;transition:var(--transition)}
.option-card:hover{border-color:var(--brand)}
.option-card.selected{border-color:var(--brand);box-shadow:0 0 0 3px rgba(0,154,68,.2);transform:translateY(-2px)}
.option-card img{height:60px;object-fit:contain;margin:0 auto 8px}
.option-card h4{font-size:.85rem;font-weight:600;color:var(--dark)}

/* Progress */
.progress-bar{display:flex;justify-content:space-between;align-items:center;position:relative;margin:0 32px;padding:24px 0}
.progress-bar::before{content:'';position:absolute;top:50%;left:0;right:0;height:3px;background:#e5e7eb;transform:translateY(-50%)}
.progress-bar .fill{position:absolute;top:50%;left:0;height:3px;background:var(--brand);transform:translateY(-50%);transition:width .4s}
.progress-step{display:flex;flex-direction:column;align-items:center;position:relative;z-index:2}
.progress-step .circle{width:36px;height:36px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:.85rem;font-weight:700;background:var(--white);border:3px solid #e5e7eb;color:#9ca3af;transition:var(--transition)}
.progress-step.done .circle,.progress-step.current .circle{background:var(--brand);border-color:var(--brand);color:var(--white)}
.progress-step.done .circle{font-size:.7rem}
.progress-step .label{font-size:.75rem;margin-top:6px;color:#9ca3af;transition:var(--transition)}
.progress-step.done .label,.progress-step.current .label{color:var(--brand);font-weight:600}

/* Summary */
.summary-box{background:#f9fafb;border-radius:var(--radius);padding:24px}
.summary-box ul{list-style:none}
.summary-box ul li{display:flex;justify-content:space-between;padding:10px 0;border-bottom:1px solid #e5e7eb;font-size:.95rem}
.summary-box ul li:last-child{border-bottom:none}
.summary-box .total{display:flex;justify-content:space-between;font-size:1.3rem;font-weight:800;color:var(--dark);padding-top:16px;margin-top:16px;border-top:3px solid var(--dark)}

/* Responsive */
@media(max-width:768px){
  body{padding-top:64px}
  .header-inner{height:64px}
  .logo img{height:44px}
  nav{display:none;position:absolute;top:64px;left:0;right:0;background:var(--white);flex-direction:column;padding:16px;box-shadow:0 10px 30px rgba(0,0,0,.1)}
  nav.open{display:flex}
  nav a{width:100%;padding:12px}
  .mobile-toggle{display:block}
  .hero{height:55vh;min-height:300px}
  section{padding:48px 0}
  .content-box{padding:24px}
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr 1fr}
  .price-grid{grid-template-columns:1fr}
  .wizard-body{padding:20px}
  .wizard-nav{padding:16px 20px;flex-wrap:wrap;gap:12px}
  .wizard-nav button{flex:1;min-width:120px;text-align:center}
  .option-grid{grid-template-columns:1fr 1fr}
}