:root{
  --green:#0b6b5b;
  --green-d:#084f43;
  --green-l:#e6f3f0;
  --amber:#f5a623;
  --ink:#13241f;
  --muted:#5d6f6a;
  --line:#e2ebe8;
  --bg:#ffffff;
  --bg-soft:#f6f9f8;
  --radius:14px;
  --shadow:0 10px 30px rgba(11,107,91,.10);
  --maxw:1180px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;font-family:"Segoe UI",Roboto,"Helvetica Neue",Arial,"PingFang SC","Microsoft YaHei",sans-serif;
  color:var(--ink);background:var(--bg);line-height:1.6;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.container{max-width:var(--maxw);margin:0 auto;padding:0 22px}
.text-center{text-align:center}

/* Header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);
  backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:68px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:20px;color:var(--green-d)}
.brand-mark{width:34px;height:34px;border-radius:9px;background:var(--green);
  color:#fff;display:grid;place-items:center;font-weight:900;letter-spacing:1px}
.nav-links{display:flex;gap:26px;align-items:center}
.nav-links a{font-weight:600;color:var(--ink);opacity:.82}
.nav-links a:hover{color:var(--green);opacity:1}
.lang-switch{display:flex;gap:6px;margin-left:8px}
.lang-switch a{font-size:13px;font-weight:700;padding:5px 9px;border-radius:8px;
  border:1px solid var(--line);color:var(--muted)}
.lang-switch a.active{background:var(--green);color:#fff;border-color:var(--green)}
.btn{display:inline-block;padding:12px 22px;border-radius:10px;font-weight:700;
  transition:transform .15s ease,box-shadow .15s ease;cursor:pointer;border:none}
.btn-primary{background:var(--amber);color:#1c1205}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 20px rgba(245,166,35,.35)}
.btn-ghost{background:transparent;color:var(--green-d);border:1.5px solid var(--green)}
.btn-ghost:hover{background:var(--green-l)}
.menu-toggle{display:none}

/* Hero */
.hero{background:linear-gradient(135deg,#0b6b5b 0%,#0a5a4d 55%,#084f43 100%);
  color:#fff;overflow:hidden;position:relative}
.hero .container{display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center;
  padding:64px 22px 72px}
.hero h1{font-size:clamp(30px,4.4vw,50px);line-height:1.12;margin:0 0 18px;font-weight:800}
.hero p{font-size:18px;opacity:.92;max-width:520px;margin:0 0 26px}
.hero-visual{display:grid;place-items:center}
.hero-visual img{width:100%;max-width:420px;filter:drop-shadow(0 18px 30px rgba(0,0,0,.25))}
.hero .btn-ghost{color:#fff;border-color:rgba(255,255,255,.6)}
.hero .btn-ghost:hover{background:rgba(255,255,255,.12)}
.badges{display:flex;gap:10px;flex-wrap:wrap;margin-top:24px}
.badge{background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.25);
  padding:6px 12px;border-radius:999px;font-size:13px;font-weight:700}

/* Trust bar */
.trustbar{background:var(--green-l);border-bottom:1px solid var(--line)}
.trustbar .container{display:flex;flex-wrap:wrap;gap:24px;justify-content:center;
  padding:16px 22px;text-align:center}
.trust-item{font-weight:700;color:var(--green-d);font-size:15px}
.trust-item span{display:block;font-weight:500;color:var(--muted);font-size:13px}

/* Sections */
.section{padding:64px 0}
.section.soft{background:var(--bg-soft)}
.section-title{font-size:clamp(24px,3vw,34px);font-weight:800;margin:0 0 8px}
.section-sub{color:var(--muted);max-width:640px;margin:0 auto 36px;font-size:16px}

/* Features */
.features{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.feature{background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 22px;box-shadow:var(--shadow)}
.feature-icon{width:46px;height:46px;border-radius:12px;background:var(--green-l);
  color:var(--green);display:grid;place-items:center;font-size:22px;margin-bottom:14px}
.feature h3{margin:0 0 6px;font-size:17px}
.feature p{margin:0;color:var(--muted);font-size:14px}

/* Products */
.products-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.product-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;box-shadow:var(--shadow);display:flex;flex-direction:column;
  transition:transform .15s ease,box-shadow .15s ease}
.product-card:hover{transform:translateY(-4px);box-shadow:0 16px 36px rgba(11,107,91,.16)}
.product-media{height:170px;display:grid;place-items:center;color:#fff;position:relative}
.product-media svg{width:84px;height:84px;opacity:.95}
.product-media .tag{position:absolute;top:12px;left:12px;background:rgba(0,0,0,.28);
  padding:4px 10px;border-radius:999px;font-size:12px;font-weight:700}
.product-body{padding:20px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1}
.product-title{font-size:18px;font-weight:800;margin:0}
.product-desc{color:var(--muted);font-size:14px;margin:0;flex:1}
.spec-list{margin:0;padding:0;list-style:none;display:flex;flex-wrap:wrap;gap:6px}
.spec-list li{background:var(--green-l);color:var(--green-d);font-size:12px;font-weight:700;
  padding:4px 9px;border-radius:7px}

/* About */
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center}
.about h2{font-size:clamp(22px,2.6vw,30px);margin:0 0 14px}
.about p{color:var(--muted);margin:0 0 14px}
.stats{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin-top:8px}
.stat{background:var(--green-l);border-radius:12px;padding:16px 18px}
.stat b{display:block;font-size:26px;color:var(--green-d)}
.stat span{font-size:13px;color:var(--muted)}
.certs{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}
.cert-badge{background:#fff;border:1px solid var(--line);border-radius:10px;
  padding:8px 14px;font-weight:800;color:var(--green-d);font-size:14px}

/* Contact */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:36px;align-items:start}
.contact-info h2{margin:0 0 12px;font-size:26px}
.contact-info p{color:var(--muted);margin:0 0 18px}
.info-row{display:flex;gap:12px;align-items:flex-start;margin-bottom:14px}
.info-row .ico{width:38px;height:38px;flex:none;border-radius:10px;background:var(--green-l);
  color:var(--green);display:grid;place-items:center;font-weight:800}
.info-row b{display:block;font-size:14px}
.info-row span{color:var(--muted);font-size:14px}
.contact-form{background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:24px;box-shadow:var(--shadow)}
.contact-form label{display:block;font-weight:700;font-size:14px;margin:0 0 6px}
.contact-form input,.contact-form textarea{width:100%;padding:11px 13px;border:1px solid var(--line);
  border-radius:10px;font:inherit;margin-bottom:14px;background:var(--bg-soft)}
.contact-form input:focus,.contact-form textarea:focus{outline:none;border-color:var(--green);
  background:#fff}
.note{font-size:12px;color:var(--muted);margin-top:4px}

/* Footer */
.site-footer{background:var(--ink);color:#cfded9;padding:42px 0 26px}
.footer-cols{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:30px}
.site-footer h4{color:#fff;margin:0 0 12px;font-size:15px}
.site-footer a{color:#cfded9;display:block;margin-bottom:8px;font-size:14px}
.site-footer a:hover{color:#fff}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:28px;padding-top:18px;
  font-size:13px;color:#8fa8a1;text-align:center}

/* RTL for Arabic */
[dir="rtl"] .nav-links{flex-direction:row-reverse}
[dir="rtl"] .about-grid,[dir="rtl"] .contact-grid,[dir="rtl"] .hero .container{grid-template-columns:1fr}
[dir="rtl"] .info-row{flex-direction:row-reverse}
[dir="rtl"] .product-media .tag{left:auto;right:12px}

/* Responsive */
@media(max-width:900px){
  .features{grid-template-columns:repeat(2,1fr)}
  .products-grid{grid-template-columns:1fr}
  .about-grid,.contact-grid{grid-template-columns:1fr}
  .hero .container{grid-template-columns:1fr;padding-top:48px}
  .hero-visual{order:-1}
  .footer-cols{grid-template-columns:1fr 1fr}
}
@media(max-width:640px){
  .nav-links{position:absolute;top:68px;left:0;right:0;background:#fff;flex-direction:column;
    gap:0;padding:8px 22px 16px;border-bottom:1px solid var(--line);display:none}
  .nav-links.open{display:flex}
  .nav-links a{padding:10px 0;border-bottom:1px solid var(--line);width:100%}
  .menu-toggle{display:block;background:none;border:1px solid var(--line);border-radius:9px;
    padding:8px 12px;font-size:18px;cursor:pointer}
  .features{grid-template-columns:1fr}
  .footer-cols{grid-template-columns:1fr}
}