:root{
  --navy:#12234d;
  --navy2:#1a2f66;
  --navy-deep:#0e1a34;
  --green:#1eab45;
  --green-dark:#158236;
  --text-dark:#101a33;
  --text-gray:#5c6479;
  --bg-light:#f4f6fb;
  --white:#ffffff;
  --border:#e7eaf2;
  --radius:14px;
}
*{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{
  font-family:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;
  color:var(--text-dark);
  background:var(--white);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{font-family:'Poppins',sans-serif;line-height:1.2;color:var(--text-dark);}
a{text-decoration:none;color:inherit;}
img{max-width:100%;display:block;}
.container{max-width:1180px;margin:0 auto;padding:0 24px;}
ul{list-style:none;}

/* Header */
header{
  position:sticky;top:0;z-index:100;
  background:rgba(255,255,255,0.97);
  border-bottom:1px solid var(--border);
  backdrop-filter:blur(6px);
}
.nav-wrap{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 24px;max-width:1180px;margin:0 auto;
}
.logo{display:flex;align-items:center;gap:10px;}
.logo img{height:58px;width:auto;}
nav.main-nav ul{display:flex;gap:34px;}
nav.main-nav a{
  font-weight:600;font-size:15px;color:var(--text-dark);
  transition:color .2s;
}
nav.main-nav a:hover{color:var(--green-dark);}
.nav-right{display:flex;align-items:center;gap:14px;}
.lang-switch{
  display:flex;border:1px solid var(--border);border-radius:20px;overflow:hidden;font-size:13px;font-weight:700;
}
.lang-switch button{
  padding:7px 14px;border:none;background:var(--white);color:var(--text-gray);cursor:pointer;font-weight:700;font-family:inherit;
}
.lang-switch button.active{background:var(--navy2);color:#fff;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:30px;font-weight:700;font-size:14.5px;
  cursor:pointer;border:none;white-space:nowrap;transition:transform .15s, box-shadow .15s, background .2s;
}
.btn-primary{background:var(--green);color:#fff;box-shadow:0 6px 16px rgba(30,171,69,.28);}
.btn-primary:hover{background:var(--green-dark);transform:translateY(-1px);}
.btn-outline{background:transparent;border:1.5px solid #ffffff88;color:#fff;}
.btn-outline:hover{background:rgba(255,255,255,.12);}
.btn-outline-dark{background:transparent;border:1.5px solid var(--border);color:var(--text-dark);}
.btn-outline-dark:hover{border-color:var(--navy2);}
.menu-toggle{display:none;background:none;border:none;font-size:26px;cursor:pointer;color:var(--navy);}

/* Hero */
.hero{
  position:relative;overflow:hidden;
  background:linear-gradient(112deg,#0f1f45 0%,#15305f 38%,#1c6a58 78%,#1f8d5c 100%);
  color:#fff;
  padding:96px 0 90px;
}
.hero::after{
  content:"";position:absolute;inset:0;
  background:url('images/hero.jpg') right center/cover no-repeat;
  opacity:.28;mix-blend-mode:luminosity;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg, rgba(10,20,45,.94) 0%, rgba(15,35,70,.82) 40%, rgba(20,90,70,.55) 75%, rgba(24,120,80,.35) 100%);
  z-index:1;
}
.hero .container{position:relative;z-index:2;max-width:800px;}
.badge-pill{
  display:inline-block;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.3);
  padding:8px 18px;border-radius:30px;font-size:13.5px;font-weight:700;letter-spacing:.2px;margin-bottom:26px;
}
.hero h1{font-size:44px;font-weight:800;margin-bottom:22px;letter-spacing:-.5px;color:#fff;}
.hero p.lead{font-size:17.5px;color:#dfe6f2;max-width:620px;margin-bottom:34px;}
.hero .btn-row{display:flex;gap:14px;flex-wrap:wrap;}

/* Product hero variants */
.product-hero{padding:64px 0 56px;}
.product-hero h1{font-size:36px;margin-bottom:16px;}
.product-hero p.lead{font-size:16px;margin-bottom:24px;}
.breadcrumb{font-size:13px;color:rgba(255,255,255,.75);margin-bottom:18px;}
.breadcrumb a{color:#fff;font-weight:600;}
.breadcrumb a:hover{text-decoration:underline;}
.suitable-chips{display:flex;flex-wrap:wrap;gap:10px;margin:6px 0 28px;}
.suitable-chip{background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.3);padding:7px 14px;border-radius:20px;font-size:12.8px;font-weight:600;}
.download-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:6px;}
.download-btn{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.35);color:#fff;padding:10px 18px;border-radius:10px;font-size:13.3px;font-weight:700;transition:background .2s;}
.download-btn:hover{background:rgba(255,255,255,.24);}
.download-btn svg{flex:none;}

.hero.hero-ecosan{background:linear-gradient(112deg,#0a2015 0%,#0f4a2c 38%,#178f4f 78%,#1eab45 100%);}
.hero.hero-ecosan::before{background:linear-gradient(100deg, rgba(8,22,15,.94) 0%, rgba(12,60,34,.84) 40%, rgba(20,120,60,.55) 75%, rgba(30,171,69,.32) 100%);}
.hero.hero-polymutan{background:linear-gradient(112deg,#2b1f08 0%,#5c4213 38%,#a87a25 78%,#d9a441 100%);}
.hero.hero-polymutan::before{background:linear-gradient(100deg, rgba(28,20,6,.94) 0%, rgba(70,50,10,.84) 40%, rgba(150,110,30,.5) 75%, rgba(217,164,65,.3) 100%);}
.hero.hero-mechanical{background:linear-gradient(112deg,#12141c 0%,#262b38 38%,#3c4356 78%,#525a70 100%);}
.hero.hero-mechanical::before{background:linear-gradient(100deg, rgba(10,12,18,.94) 0%, rgba(25,28,38,.85) 40%, rgba(50,55,70,.55) 75%, rgba(75,80,95,.32) 100%);}
.hero.hero-uv{background:linear-gradient(112deg,#1a1006 0%,#4a2410 38%,#9a4a1c 78%,#d9711f 100%);}
.hero.hero-uv::before{background:linear-gradient(100deg, rgba(20,10,5,.94) 0%, rgba(70,35,15,.85) 40%, rgba(150,70,25,.55) 75%, rgba(217,113,31,.32) 100%);}

/* Section generic */
section{padding:84px 0;}
.section-tag{
  display:block;text-align:center;color:var(--green-dark);font-weight:700;font-size:13px;
  letter-spacing:1.2px;text-transform:uppercase;margin-bottom:12px;
}
.section-title{text-align:center;font-size:32px;font-weight:800;margin-bottom:16px;}
.section-sub{text-align:center;color:var(--text-gray);max-width:640px;margin:0 auto 48px;font-size:16px;}
.bg-light{background:var(--bg-light);}
.section-title.left, .section-tag.left, .section-sub.left{text-align:left;margin-left:0;}

/* Why PP-R cards */
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;}
.why-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius);
  padding:30px 26px;transition:box-shadow .2s, transform .2s;
}
.why-card:hover{box-shadow:0 14px 30px rgba(20,40,90,.08);transform:translateY(-3px);}
.icon-box{
  width:46px;height:46px;border-radius:12px;background:#e9f8ee;
  display:flex;align-items:center;justify-content:center;margin-bottom:18px;color:var(--green-dark);
}
.why-card h3{font-size:17px;margin-bottom:10px;}
.why-card p{color:var(--text-gray);font-size:14.5px;}

/* About */
.about-grid{display:grid;grid-template-columns:1.1fr 0.9fr;gap:56px;align-items:center;}
.about-grid h2{font-size:30px;font-weight:800;margin-bottom:16px;}
.about-grid p.desc{color:var(--text-gray);font-size:15.5px;margin-bottom:22px;}
.check-list li{
  display:flex;align-items:flex-start;gap:10px;margin-bottom:13px;font-weight:600;font-size:15px;
}
.check-list li svg{flex:none;margin-top:2px;color:var(--green);}
.stats-card{
  background:#fff;border:1px solid var(--border);border-radius:18px;padding:34px;
  box-shadow:0 20px 46px rgba(20,40,90,.08);
  display:grid;grid-template-columns:1fr 1fr;gap:28px 24px;
}
.stats-card .stat b{display:block;font-size:30px;font-weight:800;color:var(--navy2);}
.stats-card .stat span{color:var(--text-gray);font-size:13.5px;font-weight:600;}
.trust-line{
  margin-top:26px;padding:16px 18px;background:#eef7f0;border:1px solid #d3ecd9;border-radius:12px;
  font-size:13.5px;color:#20623a;display:flex;gap:10px;align-items:flex-start;
}
.trust-line svg{flex:none;margin-top:2px;}

/* Products */
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:26px;}
.product-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;
  transition:box-shadow .2s, transform .2s;display:flex;flex-direction:column;
}
.product-card:hover{box-shadow:0 18px 36px rgba(20,40,90,.1);transform:translateY(-3px);}
.product-media{
  height:210px;display:flex;align-items:center;justify-content:center;background:linear-gradient(180deg,#eef1f7,#e4e8f1);
  padding:18px;
}
.product-media img{
  max-height:100%;width:auto;max-width:88%;object-fit:contain;
  filter:drop-shadow(0 14px 18px rgba(20,40,90,.16));
}
.mini-product-card img{
  max-height:80px;width:auto;margin:0 auto 14px;object-fit:contain;
  filter:drop-shadow(0 8px 12px rgba(20,40,90,.14));
}
.product-body{padding:26px 28px 28px;display:flex;flex-direction:column;flex:1;}
.tag{
  display:inline-block;font-size:11.5px;font-weight:800;letter-spacing:.4px;
  padding:6px 12px;border-radius:20px;margin-bottom:14px;text-transform:uppercase;
}
.tag-green{background:#e3f8e9;color:var(--green-dark);}
.tag-blue{background:#e5edfc;color:var(--navy2);}
.tag-amber{background:#fbf0da;color:#8a5f13;}
.tag-dark{background:#e7e9ee;color:#3a3f4b;}
.product-body h3{font-size:19px;margin-bottom:10px;letter-spacing:.2px;}
.product-body p.desc{color:var(--text-gray);font-size:14.5px;margin-bottom:16px;}
.mini-list li{
  display:flex;gap:8px;align-items:flex-start;font-size:13.5px;color:var(--text-dark);font-weight:600;margin-bottom:8px;
}
.mini-list li svg{flex:none;color:var(--green);margin-top:2px;}
.spec-row{display:flex;gap:10px;margin-top:18px;flex-wrap:wrap;}
.spec-chip{
  background:var(--bg-light);border:1px solid var(--border);border-radius:20px;padding:6px 14px;font-size:12.5px;font-weight:700;color:var(--text-gray);
}
.product-link{
  margin-top:20px;display:inline-flex;align-items:center;gap:6px;font-weight:700;font-size:14px;color:var(--navy2);
}
.product-link:hover{color:var(--green-dark);}
.product-link svg{transition:transform .2s;}
.product-link:hover svg{transform:translateX(3px);}

/* 5-layer technology */
.layer-grid{display:grid;grid-template-columns:0.95fr 1.05fr;gap:56px;align-items:center;}
.layer-grid h2{font-size:30px;font-weight:800;margin-bottom:16px;}
.layer-grid p.desc{color:var(--text-gray);font-size:15.5px;margin-bottom:22px;}
.layer-list{display:flex;flex-direction:column;gap:14px;margin-bottom:6px;}
.layer-list li{
  display:flex;align-items:flex-start;gap:14px;background:#fff;border:1px solid var(--border);
  border-radius:12px;padding:14px 16px;
}
.layer-swatch{width:14px;height:14px;border-radius:4px;flex:none;margin-top:4px;}
.layer-list b{display:block;font-size:14.5px;margin-bottom:2px;}
.layer-list span{font-size:13.3px;color:var(--text-gray);}
.layer-diagram{display:flex;align-items:center;justify-content:center;}
.layer-stats{display:flex;gap:14px;margin-top:24px;flex-wrap:wrap;}
.layer-stat{background:#fff;border:1px solid var(--border);border-radius:12px;padding:14px 18px;flex:1;min-width:130px;}
.layer-stat b{display:block;font-size:22px;font-weight:800;color:var(--navy2);}
.layer-stat span{font-size:12.3px;color:var(--text-gray);font-weight:600;}

/* Applications */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.app-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:32px 26px;text-align:center;
  transition:box-shadow .2s, transform .2s;
}
.app-card:hover{box-shadow:0 14px 30px rgba(20,40,90,.08);transform:translateY(-3px);}
.app-icon{
  width:56px;height:56px;border-radius:14px;margin:0 auto 18px;
  background:linear-gradient(135deg,var(--navy2),var(--green-dark));
  display:flex;align-items:center;justify-content:center;color:#fff;
}
.app-card h3{font-size:16.5px;margin-bottom:8px;}
.app-card p{color:var(--text-gray);font-size:13.8px;}

/* Contact */
.contact-grid{display:grid;grid-template-columns:0.85fr 1.15fr;gap:40px;}
.contact-item{display:flex;gap:16px;margin-bottom:26px;}
.contact-item .icon-box{background:#e5edfc;color:var(--navy2);}
.contact-item h4{font-size:15.5px;margin-bottom:4px;}
.contact-item p, .contact-item a{color:var(--text-gray);font-size:14.5px;}
.map-frame{border-radius:var(--radius);overflow:hidden;border:1px solid var(--border);margin-top:8px;height:200px;}
.map-frame iframe{width:100%;height:100%;border:0;}
.contact-form{
  background:var(--bg-light);border:1px solid var(--border);border-radius:18px;padding:34px;
}
.form-group{margin-bottom:18px;}
.form-group label{display:block;font-size:13.5px;font-weight:700;margin-bottom:7px;}
.form-group input, .form-group textarea{
  width:100%;padding:12px 14px;border:1px solid var(--border);border-radius:10px;font-family:inherit;font-size:14.5px;
  background:#fff;
}
.form-group textarea{min-height:120px;resize:vertical;}
.form-note{font-size:12.5px;color:var(--text-gray);margin-top:10px;}

/* Spec tables */
.spec-table-wrap{overflow-x:auto;border:1px solid var(--border);border-radius:var(--radius);margin-bottom:16px;}
table.spec-table{width:100%;border-collapse:collapse;font-size:13.3px;}
table.spec-table th{background:var(--bg-light);text-align:left;padding:12px 16px;font-weight:700;color:var(--text-dark);border-bottom:1px solid var(--border);white-space:nowrap;}
table.spec-table td{padding:12px 16px;border-bottom:1px solid var(--border);color:var(--text-gray);white-space:nowrap;}
table.spec-table tr:last-child td{border-bottom:none;}
table.spec-table tbody tr:hover td{background:#fafbfd;}
.table-note{font-size:12.5px;color:var(--text-gray);margin-bottom:36px;}

/* Certifications */
.cert-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:18px;}
.cert-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:22px;display:flex;gap:14px;align-items:flex-start;transition:box-shadow .2s, transform .2s;}
.cert-card:hover{box-shadow:0 14px 30px rgba(20,40,90,.08);transform:translateY(-3px);}
.cert-card .icon-box{background:#e5edfc;color:var(--navy2);flex:none;margin-bottom:0;}
.cert-card h4{font-size:14.5px;margin-bottom:4px;}
.cert-card span{font-size:12.3px;color:var(--text-gray);display:block;margin-bottom:8px;}
.cert-card a.dl-link{font-size:12.5px;font-weight:700;color:var(--green-dark);display:inline-flex;align-items:center;gap:4px;}
.cert-card a.dl-link:hover{color:var(--navy2);}

/* Other products cross-links */
.other-products{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.mini-product-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:26px 22px;text-align:center;transition:box-shadow .2s, transform .2s;}
.mini-product-card:hover{box-shadow:0 14px 30px rgba(20,40,90,.08);transform:translateY(-4px);}
.mini-product-card svg{margin:0 auto 14px;}
.mini-product-card h4{font-size:15px;margin-bottom:6px;}
.mini-product-card p{font-size:12.5px;color:var(--text-gray);margin-bottom:14px;}

/* CTA band */
.cta-band{background:linear-gradient(120deg,var(--navy2),var(--green-dark));color:#fff;border-radius:22px;padding:54px 40px;text-align:center;}
.cta-band h2{color:#fff;margin-bottom:12px;}
.cta-band p{color:#dfe6f2;margin-bottom:26px;max-width:520px;margin-left:auto;margin-right:auto;}
.cta-band .btn-row{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;}

.back-link{display:inline-flex;align-items:center;gap:8px;font-weight:700;font-size:13.8px;color:var(--navy2);margin-bottom:24px;}
.back-link:hover{color:var(--green-dark);}

/* Footer */
footer{background:var(--navy-deep);color:#c7cede;padding:56px 0 26px;}
.footer-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:40px;margin-bottom:36px;}
.footer-logo{height:32px;margin-bottom:16px;filter:brightness(0) invert(1);}
.footer-grid p{font-size:13.8px;color:#9aa3bd;line-height:1.7;}
.footer-grid h4{color:#fff;font-size:14px;margin-bottom:16px;letter-spacing:.3px;}
.footer-grid ul li{margin-bottom:10px;font-size:13.8px;}
.footer-grid ul li a{color:#b7bfd6;}
.footer-grid ul li a:hover{color:#fff;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);padding-top:22px;
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;font-size:12.8px;color:#8891ab;
}
.legal-name{font-size:12px;color:#7e88a3;margin-top:6px;}

@media(max-width:900px){
  nav.main-nav, .nav-right .lang-switch, .nav-right .btn-primary{display:none;}
  .menu-toggle{display:block;}
  .about-grid, .contact-grid, .footer-grid, .layer-grid{grid-template-columns:1fr;}
  .layer-diagram{order:-1;margin-bottom:10px;}
  .grid-4, .grid-3, .grid-2, .other-products{grid-template-columns:1fr 1fr;}
  .hero h1{font-size:32px;}
  .product-hero h1{font-size:28px;}
}
@media(max-width:600px){
  .grid-4, .grid-3, .grid-2, .other-products{grid-template-columns:1fr;}
  .hero{padding:70px 0 60px;}
  .hero h1{font-size:27px;}
  section{padding:60px 0;}
  .cta-band{padding:40px 24px;}
}