/* ===== Ecoiria — base styles ===== */
:root{
  --green-dark:#1f3a2e;
  --green:#2f5d3f;
  --green-light:#6fae5d;
  --cream:#faf6ee;
  --sand:#f1e8d8;
  --brown:#5a3d2b;
  --text:#2b2b26;
  --muted:#6b6b62;
  --white:#ffffff;
  --radius:14px;
  --shadow:0 10px 30px rgba(31,58,46,.10);
  --transition:.25s ease;
}

*{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{
  font-family:'Poppins',sans-serif;
  color:var(--text);
  background:var(--cream);
  line-height:1.6;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{text-decoration:none;color:inherit;}
ul{list-style:none;}
.container{
  width:100%;
  max-width:1400px;
  margin:0 auto;
  padding:0 24px;
}
h1,h2,h3,h4{font-weight:600;line-height:1.25;color:var(--green-dark);}
.section{padding:80px 0;}
.section.alt{background:var(--sand);}
.section-tag{
  display:inline-block;
  color:var(--green);
  background:rgba(111,174,93,.15);
  padding:6px 16px;
  border-radius:30px;
  font-size:13px;
  font-weight:600;
  letter-spacing:.5px;
  text-transform:uppercase;
  margin-bottom:14px;
}
.section-head{max-width:640px;margin:0 auto 50px;text-align:center;}
.section-head h2{font-size:clamp(28px,4vw,36px);margin-bottom:14px;}
.section-head p{color:var(--muted);}
.btn{
  display:inline-block;
  padding:14px 32px;
  border-radius:50px;
  font-weight:600;
  font-size:15px;
  transition:var(--transition);
  border:2px solid transparent;
}
.btn-primary{background:var(--green);color:var(--white);}
.btn-primary:hover{background:var(--green-dark);transform:translateY(-2px);}
.btn-outline{border-color:var(--white);color:var(--white);}
.btn-outline:hover{background:var(--white);color:var(--green-dark);}
.btn-dark{background:var(--green-dark);color:var(--white);}
.btn-dark:hover{background:var(--green);}

/* ===== Topbar ===== */
.topbar{background:var(--green-dark);color:#e7ede8;font-size:13px;}
.topbar-inner{display:flex;justify-content:space-between;align-items:center;padding:8px 24px;}
.topbar-contact{opacity:.85;}

/* ===== Header ===== */
.site-header{
  background:var(--green);
  position:sticky;top:0;z-index:1000;
  box-shadow:0 4px 20px rgba(0,0,0,.08);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:12px 24px;}
.logo img{height:48px;width:auto;}
.main-nav ul{display:flex;gap:6px;}
.main-nav li{position:relative;}
.submenu-toggle{position:absolute;right:4px;top:8px;border:0;background:transparent;color:#fff;font-size:18px;line-height:1;padding:5px;cursor:pointer;z-index:2;}
.submenu{display:none!important;position:absolute;top:100%;left:0;min-width:242px;background:var(--white);padding:0;box-shadow:0 8px 24px rgba(0,0,0,.16);border-radius:0 0 10px 10px;z-index:10;flex-direction:column!important;gap:0!important;overflow:visible;}
.has-submenu:hover .submenu,.has-submenu:focus-within .submenu,.has-submenu.submenu-open .submenu{display:flex!important;}
.submenu a{display:block;color:var(--text)!important;padding:9px 12px!important;white-space:nowrap;}
.submenu a,.submenu span{font-size:15px;line-height:1.25;}
.submenu a:hover{background:var(--cream);color:var(--green-dark)!important;}
.submenu .menu-category>span{display:block;color:var(--text);font-weight:400;padding:12px;white-space:nowrap;border-bottom:1px solid #e5e5e5;}
.submenu .menu-parent-link{display:block;color:var(--text)!important;font-weight:400;padding:11px 14px!important;white-space:nowrap;border-bottom:1px solid #e5e5e5;}
.submenu .menu-category>ul{display:none;position:absolute;left:100%;top:0;min-width:248px;padding:0;background:var(--white);box-shadow:0 8px 24px rgba(0,0,0,.16);border-radius:0 0 10px 0;}
.submenu .menu-category:hover>ul,.submenu .menu-category:focus-within>ul{display:block;}
.submenu .menu-category>ul a{padding:12px!important;font-weight:400;border-bottom:1px solid #e5e5e5;}
.submenu .menu-category>a{display:block;padding:11px 14px!important;border-bottom:1px solid #e5e5e5;}
.main-nav a{
  display:block;
  padding:10px 16px;
  font-size:15px;
  font-weight:500;
  color:#eef4ea;
  border-radius:30px;
  transition:var(--transition);
}
.main-nav a:hover,.main-nav a.active{
  background:rgba(255,255,255,.15);
  color:#fff;
}
.nav-toggle{
  display:none;
  flex-direction:column;
  gap:5px;
  background:none;
  border:none;
  cursor:pointer;
  padding:6px;
}
.nav-toggle span{width:26px;height:2px;background:#fff;border-radius:2px;}

/* ===== Hero ===== */
.hero{
  position:relative;
  min-height:78vh;
  display:flex;
  align-items:center;
  background:
    linear-gradient(90deg,rgba(18,38,29,.78),rgba(18,38,29,.42)),
    url('../img/slider.webp') center/cover no-repeat;
  color:#fff;
  overflow:hidden;
}
.hero::after{
  content:"";
  position:absolute;inset:0;
  background:radial-gradient(circle at 80% 30%,rgba(255,255,255,.12),transparent 55%);
}
.hero .container{position:relative;z-index:2;}
.hero-content{max-width:650px;}
.hero-content span.section-tag{background:rgba(255,255,255,.15);color:#fff;}
.hero-content h1{color:#fff;font-size:clamp(34px,5vw,54px);margin-bottom:18px;}
.hero-content p{color:rgba(255,255,255,.85);max-width:520px;margin-bottom:30px;font-size:17px;}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap;}

/* Page header for inner pages */
.page-header{
  position:relative;
  isolation:isolate;
  overflow:hidden;
  background:url('../img/banner.webp') center center/cover no-repeat;
  color:#fff;
  padding:70px 0;
  text-align:center;
}
.page-header::before{
  content:"";
  position:absolute;
  display:block;
  width:100%;
  height:100%;
  left:0;
  top:0;
  z-index:-1;
  background:#1a1818;
  opacity:.5;
}
.page-header .container{position:relative;z-index:1;}
.page-header h1{color:#fff;font-size:clamp(30px,4vw,44px);}
.breadcrumb{margin-top:12px;font-size:14px;color:rgba(255,255,255,.75);}
.breadcrumb a{color:#fff;font-weight:600;}

/* ===== Cards / Grids ===== */
.grid{display:grid;gap:30px;}
.grid-2{grid-template-columns:repeat(2,1fr);}
.grid-3{grid-template-columns:repeat(3,1fr);}
.grid-4{grid-template-columns:repeat(4,1fr);}

.card{
  background:var(--white);
  border-radius:var(--radius);
  padding:34px 26px;
  box-shadow:var(--shadow);
  transition:var(--transition);
  text-align:center;
}
.card:hover{transform:translateY(-6px);box-shadow:0 18px 40px rgba(31,58,46,.15);}
.card .icon{
  width:64px;height:64px;
  display:flex;align-items:center;justify-content:center;
  margin:0 auto 18px;
  background:rgba(111,174,93,.15);
  border-radius:50%;
  font-size:28px;
  color:var(--green);
}
.card .icon img{width:100%;height:100%;object-fit:cover;border-radius:50%;}
.card h3{margin-bottom:10px;font-size:19px;}
.card p{color:var(--muted);font-size:15px;}

/* Product card */
.product-card{
  background:var(--white);
  border-radius:var(--radius);
  overflow:hidden;
  box-shadow:var(--shadow);
  transition:var(--transition);
}
.product-card:hover{transform:translateY(-6px);}
.product-thumb{
  height:200px;
  background:linear-gradient(135deg,var(--sand),#e3d6ba);
  display:flex;align-items:center;justify-content:center;
  font-size:50px;
}
.product-thumb img{width:100%;height:100%;object-fit:cover;}
.product-filters{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 28px;}
.product-filters .tag{border:1px solid var(--border);text-decoration:none;}
.product-filters .tag.active,.product-filters .tag:hover{background:var(--green);color:#fff;}
.product-card{text-decoration:none;color:inherit;}
.product-carousel{position:relative;display:flex;align-items:center;gap:12px;}
.product-carousel-track{display:flex;gap:30px;overflow-x:auto;scroll-behavior:smooth;scrollbar-width:none;padding:8px 2px 16px;width:100%;}
.product-carousel-track::-webkit-scrollbar{display:none;}
.product-carousel .product-card{flex:0 0 calc((100% - 90px)/4);min-width:220px;}
.carousel-button{flex:0 0 42px;width:42px;height:42px;border:1px solid var(--border);border-radius:50%;background:var(--white);color:var(--green-dark);font-size:20px;cursor:pointer;box-shadow:var(--shadow);z-index:1;}
.carousel-button:hover{background:var(--green);color:#fff;}
.empty-state{text-align:center;color:var(--muted);padding:36px 0;}
.product-detail{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:56px;align-items:start;}
.product-detail-image{grid-column:span 6;}
.product-detail-body{grid-column:span 6;padding-top:8px;}
.product-detail-image{background:var(--cream);aspect-ratio:1/1;overflow:hidden;border-radius:var(--radius);}
.product-detail-image img{width:100%;height:100%;object-fit:cover;}
.product-detail-body h2{font-size:clamp(28px,4vw,44px);margin:14px 0;}
.product-price{font-size:24px;color:var(--green);font-weight:600;}
.product-description{color:var(--muted);line-height:1.8;margin:22px 0 28px;}
.details-heading{font-size:18px;color:var(--green-dark);margin-top:28px;margin-bottom:0;}
.product-body{padding:22px;}
.product-body h3{margin-bottom:8px;font-size:18px;}
.product-body p{color:var(--muted);font-size:14px;margin-bottom:14px;}
.tag-row{display:flex;gap:8px;flex-wrap:wrap;}
.tag{
  background:rgba(111,174,93,.15);
  color:var(--green);
  font-size:12px;
  font-weight:600;
  padding:4px 12px;
  border-radius:20px;
}

/* Why Choose Us */
.why-choose{
  display:grid;
  grid-template-columns:1fr 1.3fr;
  min-height:420px;
}
.why-left{
  position:relative;
  display:flex;
  align-items:center;
  padding:50px;
  background:
    linear-gradient(rgba(20,30,20,.58),rgba(20,30,20,.58)),
    url('../img/why_choose_us.webp') center/cover no-repeat;
}
.why-left h2{color:#fff;font-size:clamp(30px,4vw,46px);}
.why-right{
  background:linear-gradient(135deg,var(--green),var(--green-dark));
  padding:56px 60px;
  display:flex;
  flex-direction:column;
  justify-content:center;
  gap:40px;
}
.why-item{display:flex;gap:24px;align-items:flex-start;}
.why-icon{
  width:70px;height:70px;flex-shrink:0;
  background:#fff;
  border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  font-size:30px;
  box-shadow:0 8px 20px rgba(0,0,0,.15);
}
.why-item h3{color:#fff;font-size:20px;margin-bottom:8px;}
.why-item p{color:rgba(255,255,255,.85);font-size:15px;}
@media(max-width:900px){
  .why-choose{grid-template-columns:1fr;}
  .why-left{padding:40px 30px;min-height:160px;}
  .why-right{padding:40px 30px;gap:30px;}
}

/* About split */
.split{display:grid;grid-template-columns:1fr 1fr;gap:50px;align-items:center;}
.split img{border-radius:var(--radius);box-shadow:var(--shadow);}
.check-list li{
  display:flex;gap:12px;align-items:flex-start;
  margin-bottom:14px;color:var(--text);
}
.check-list li::before{
  content:"✓";
  background:var(--green);
  color:#fff;
  width:22px;height:22px;
  border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-size:12px;flex-shrink:0;margin-top:2px;
}

/* Stats */
.stats{background:var(--green-dark);color:#fff;padding:50px 0;}
.stats .grid-4{text-align:center;}
.stats h3{color:#fff;font-size:clamp(30px,4vw,42px);margin-bottom:6px;}
.stats p{color:rgba(255,255,255,.75);font-size:14px;text-transform:uppercase;letter-spacing:.5px;}

/* Intro band (soil background + white card) */
.intro-band{
  position:relative;
  padding:70px 24px;
  background:
    linear-gradient(180deg,rgba(20,14,10,.35),rgba(20,14,10,.55)),
    radial-gradient(circle at 70% 30%,#4a3423,#241a12 75%);
}
.intro-band .container{padding:0;}
.intro-card{
  background:var(--white);
  border-radius:var(--radius);
  box-shadow:0 25px 60px rgba(0,0,0,.35);
  display:grid;
  grid-template-columns:1.3fr 1fr;
  overflow:hidden;
}
.intro-text{padding:48px 50px;}
.intro-text h2{font-size:34px;margin-bottom:4px;}
.intro-text h3{font-size:19px;color:var(--text);font-weight:600;margin-bottom:18px;}
.intro-text > p{color:var(--muted);font-size:15px;margin-bottom:34px;}
.intro-features{display:grid;grid-template-columns:1fr 1fr;gap:26px;}
.intro-feature{display:flex;align-items:center;gap:16px;font-weight:600;font-size:15px;}
.intro-icon{
  width:60px;height:60px;flex-shrink:0;
  border-radius:50%;
  border:2px solid rgba(111,174,93,.4);
  background:rgba(111,174,93,.08);
  display:flex;align-items:center;justify-content:center;
  overflow:hidden;
}
.intro-icon img{
  width:70%;height:70%;
  object-fit:contain;
  border-radius:50%;
}
.intro-visual{
  position:relative;
  min-height:420px;
  overflow:hidden;
  background:#2a1d13;
}
.intro-visual img{
  position:absolute;
  inset:0;
  display:block;
  width:100%;
  height:100%;
  object-fit:cover;
  object-position:center;
}
@media(max-width:900px){
  .intro-card{grid-template-columns:1fr;}
  .intro-visual{display:none;}
  .intro-text{padding:36px 28px;}
  .intro-features{grid-template-columns:1fr;}
}

/* Timeline (Knowledge Centre / process) */
.timeline{position:relative;padding-left:30px;border-left:3px solid var(--green-light);}
.timeline-item{position:relative;margin-bottom:36px;padding-left:20px;}
.timeline-item::before{
  content:"";
  position:absolute;left:-38px;top:2px;
  width:14px;height:14px;border-radius:50%;
  background:var(--green);
  border:3px solid var(--cream);
}
.timeline-item h4{margin-bottom:6px;}
.timeline-item p{color:var(--muted);font-size:15px;}

/* Article / knowledge cards */
.article-card{background:var(--white);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);}
.knowledge-submenu{min-width:210px;}
.knowledge-card{scroll-margin-top:120px;}
.knowledge-card .article-body{min-height:190px;}
.article-thumb{height:170px;background:linear-gradient(135deg,var(--green-light),var(--green));display:flex;align-items:center;justify-content:center;color:#fff;font-size:40px;}
.article-body{padding:20px;}
.article-body span{font-size:12px;color:var(--green);font-weight:600;text-transform:uppercase;}
.article-body h3{font-size:17px;margin:8px 0;}
.article-body p{color:var(--muted);font-size:14px;}
.knowledge-link{display:inline-block;margin-top:18px;color:var(--green-dark);font-size:14px;font-weight:600;text-decoration:underline;text-underline-offset:4px;}

/* Lab report */
.lab-report-layout{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:42px;align-items:start;}
.lab-report-viewer{margin:0;background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow);}
.lab-report-viewer img{width:600px;height:auto;}
.lab-report-viewer figcaption{margin-top:14px;color:var(--muted);font-size:13px;text-align:center;}
.lab-report-aside{position:sticky;top:120px;}
.lab-report-aside h2{font-size:24px;margin-bottom:14px;}
.lab-report-aside p{color:var(--muted);font-size:15px;margin-bottom:24px;}
.lab-report-aside .btn{width:100%;text-align:center;}

/* Instructions */
.instruction-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:28px;list-style:none;counter-reset:instruction-step;}
.instruction-step{background:#fff;border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:var(--transition);}
.instruction-step:hover{transform:translateY(-4px);box-shadow:0 18px 40px rgba(31,58,46,.15);}
.instruction-step img{width:100%;height:auto;aspect-ratio:15/8;object-fit:cover;}

/* Sustainability */
.sustainability-intro{display:grid;gap:64px;align-items:start;}
.sustainability-heading{position:sticky;top:120px;}
.sustainability-heading h2{font-size:clamp(30px,4vw,44px);margin:12px 0 18px;}
.sustainability-heading p{color:var(--muted);font-size:17px;}
.sustainability-copy{display:grid;gap:28px;}
.sustainability-copy p{color:var(--muted);font-size:16px;line-height:1.9;}
.sustainability-copy strong{color:var(--green-dark);}
.sustainability-band{background:var(--green-dark);color:#fff;}
.sustainability-band .grid{align-items:start;}
.sustainability-point{padding:8px 24px 8px 0;border-right:1px solid rgba(255,255,255,.18);}
.sustainability-point:last-child{border-right:0;}
.sustainability-point span{display:block;color:var(--green-light);font-size:13px;font-weight:600;text-transform:uppercase;margin-bottom:10px;}
.sustainability-point h3{color:#fff;font-size:21px;margin-bottom:12px;}
.sustainability-point p{color:rgba(255,255,255,.78);font-size:15px;}

/* Process */
.process-intro{margin:0 auto 56px;text-align:justify;}
.process-intro h2{font-size:clamp(30px,4vw,35px);margin:12px 0 18px;}
.process-intro p{color:var(--muted);font-size:17px;line-height:1.8;}
.process-timeline{margin:0 auto;}
.process-timeline .timeline-item{margin-bottom:42px;}
.process-timeline .timeline-item:last-child{margin-bottom:0;}
.process-timeline h3{font-size:21px;margin-bottom:8px;}
.process-timeline p{color:var(--muted);line-height:1.8;text-align: justify;}
.process-details{background:#fff;}
.process-details .section-head{margin-bottom:40px;}
.process-detail{padding-right:28px;}
.process-detail h3{font-size:20px;margin-bottom:14px;color:var(--green-dark);}
.process-detail ul{display:grid;gap:10px;}
.process-detail li{position:relative;padding-left:20px;color:var(--muted);font-size:15px;}
.process-detail li::before{content:"";position:absolute;left:0;top:9px;width:7px;height:7px;border-radius:50%;background:var(--green);}
.process-conclusion{max-width:850px;margin:0 auto;text-align:center;}
.process-conclusion h2{font-size:clamp(28px,4vw,38px);margin-bottom:16px;}
.process-conclusion p{color:var(--muted);font-size:17px;line-height:1.8;}

/* Why coco coir */
.coir-intro{margin:0 auto;text-align:justify;}
.coir-intro h2{font-size:clamp(30px,4vw,35px);margin:12px 0 20px;}
.coir-intro p{color:var(--muted);line-height:1.9;}
.coir-benefits{background:#fff;}
.coir-benefit{padding:0 30px;border-left:3px solid var(--green-light);}
.coir-benefit h3{font-size:21px;margin-bottom:10px;}
.coir-benefit p{color:var(--muted);font-size:15px;line-height:1.75;}
.groezy-band{background:var(--green-dark);color:#fff;}
.groezy-content{display:grid;grid-template-columns:minmax(0,.65fr) minmax(0,1.35fr);gap:60px;align-items:start;}
.groezy-content h2{color:#fff;font-size:clamp(30px,4vw,42px);margin-top:12px;}
.groezy-content p{color:rgba(255,255,255,.82);font-size:17px;line-height:1.9;}
.groezy-crops{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px;}
.groezy-crops span{border:1px solid rgba(255,255,255,.3);padding:7px 12px;border-radius:4px;color:#fff;font-size:13px;}

/* Gallery */
.gallery-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;}
.gallery-item{
  border-radius:var(--radius);
  overflow:hidden;
  aspect-ratio:1/1;
  background:linear-gradient(135deg,var(--sand),var(--green-light));
  display:flex;align-items:center;justify-content:center;
  color:var(--green-dark);
  font-size:34px;
  transition:var(--transition);
}
.gallery-item:hover{transform:scale(1.04);}
.gallery-item img{width:100%;height:100%;object-fit:cover;display:block;}

/* Contact */
.contact-wrap{display:grid;grid-template-columns:.9fr 1.1fr;gap:50px;}
.contact-info-card{
  background:var(--green-dark);
  color:#fff;
  border-radius:var(--radius);
  padding:40px 30px;
}
.contact-info-card h3{color:#fff;margin-bottom:20px;}
.contact-info-card li{display:flex;gap:14px;margin-bottom:22px;font-size:15px;color:rgba(255,255,255,.9);}
.contact-info-card .ic{
  width:40px;height:40px;flex-shrink:0;
  background:rgba(255,255,255,.12);
  border-radius:50%;
  display:flex;align-items:center;justify-content:center;
}
.map-frame{border-radius:var(--radius);overflow:hidden;margin-top:20px;box-shadow:var(--shadow);}
.form-card{
  background:var(--white);
  border-radius:var(--radius);
  padding:40px;
  box-shadow:var(--shadow);
}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-bottom:18px;}
.form-group{display:flex;flex-direction:column;gap:8px;}
.form-group.full{grid-column:1/-1;}
label{font-size:14px;font-weight:600;color:var(--text);}
input,textarea,select{
  padding:13px 16px;
  border:1.5px solid #e1ddd2;
  border-radius:10px;
  font-family:inherit;
  font-size:14px;
  background:var(--cream);
  transition:var(--transition);
}
input:focus,textarea:focus,select:focus{outline:none;border-color:var(--green-light);background:#fff;}
textarea{resize:vertical;min-height:120px;}

/* CTA band */
.cta-band{
  background:linear-gradient(135deg,var(--green),var(--green-dark));
  color:#fff;
  border-radius:var(--radius);
  padding:60px 40px;
  text-align:center;
  margin:0 24px;
}
.cta-band h2{color:#fff;margin-bottom:14px;}
.cta-band p{color:rgba(255,255,255,.85);margin-bottom:26px;}

/* ===== Footer ===== */
.site-footer{
  position:relative;
  background:
    linear-gradient(180deg,rgba(20,14,10,.55),rgba(20,14,10,.85)),
    radial-gradient(circle at 30% 20%,#3c2c1e,#1c140e 70%);
  color:#f1ece4;
  text-align:center;
  overflow:hidden;
}
.footer-top-bar{
  height:6px;
  background:linear-gradient(90deg,var(--green-light),var(--green));
}
.footer-inner{
  padding:60px 24px 34px;
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:26px;
}
.footer-logo{height:64px;width:auto;filter:brightness(0) invert(1);}
.footer-social{display:flex;gap:22px;}
.footer-social a{
  width:20px;height:20px;
  color:#fff;
  opacity:.9;
  transition:var(--transition);
}
.footer-social a svg{width:100%;height:100%;}
.footer-social a:hover{opacity:1;transform:translateY(-2px);color:var(--green-light);}
.footer-nav ul{
  display:flex;
  flex-wrap:wrap;
  justify-content:center;
  align-items:center;
  gap:10px 14px;
}
.footer-nav a{
  font-size:15px;
  font-weight:600;
  color:#f1ece4;
  transition:var(--transition);
}
.footer-nav a:hover{color:var(--green-light);}
.footer-nav .sep{color:rgba(255,255,255,.4);}
.footer-copy{font-size:14px;color:rgba(255,255,255,.7);}
.back-to-top{
  position:fixed;
  right:26px;bottom:26px;
  width:46px;height:46px;
  background:var(--green);
  color:#fff;
  border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  box-shadow:var(--shadow);
  transition:var(--transition);
  z-index:500;
}
.back-to-top svg{width:20px;height:20px;}
.back-to-top:hover{background:var(--green-dark);transform:translateY(-3px);}

/* ===== Responsive ===== */
@media(max-width:992px){
  .grid-4{grid-template-columns:repeat(2,1fr);}
  .grid-3{grid-template-columns:repeat(2,1fr);}
  .split{grid-template-columns:1fr;}
  .split.reverse .split-img{order:2;}
  .contact-wrap{grid-template-columns:1fr;}
  .gallery-grid{grid-template-columns:repeat(3,1fr);}
  .footer-inner{grid-template-columns:1fr 1fr;}
  .lab-report-layout{grid-template-columns:1fr;}
  .lab-report-aside{position:static;max-width:560px;}
  .sustainability-intro{grid-template-columns:1fr;gap:32px;}
  .sustainability-heading{position:static;}
  .groezy-content{grid-template-columns:1fr;gap:24px;}
}
@media(max-width:768px){
  .topbar-contact{display:none;}
  .main-nav{
    position:fixed;top:0;right:-100%;
    width:280px;height:100vh;
    background:var(--green-dark);
    padding:90px 24px 24px;
    transition:right .3s ease;
    z-index:999;
  }
  .main-nav.open{right:0;}
  .main-nav ul{flex-direction:column;gap:4px;}
  .main-nav a{padding:14px 16px;}
  .submenu{position:static;box-shadow:none;background:rgba(255,255,255,.06);padding:0;border-radius:0;overflow:visible;}
  .submenu a{color:#fff!important;padding-left:30px!important;}
  .submenu .menu-category>span{color:#d7e8cf;padding-left:18px;}
  .submenu .menu-category>ul{display:block;position:static;box-shadow:none;background:rgba(255,255,255,.04);padding:0;}
  .submenu .menu-category>ul a{padding-left:42px!important;}
  .submenu-toggle{right:12px;top:12px;}
  .nav-toggle{display:flex;}
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr;}
  .gallery-grid{grid-template-columns:repeat(2,1fr);}
  .form-row{grid-template-columns:1fr;}
  .product-detail{grid-template-columns:1fr;gap:28px;}
  .product-detail-image,.product-detail-body{grid-column:auto;}
  .product-carousel .product-card{flex-basis:78%;}
  .carousel-button{flex-basis:36px;width:36px;height:36px;}
  .footer-inner{grid-template-columns:1fr;}
  .instruction-grid{grid-template-columns:1fr;gap:20px;}
  .sustainability-point{border-right:0;border-bottom:1px solid rgba(255,255,255,.18);padding:8px 0 28px;}
  .sustainability-point:last-child{border-bottom:0;}
}