:root{
  --sz-text:#222;
  --sz-muted:#666;
  --sz-border:#e6e6e6;
  --sz-accent:#c1121f;   /* Safe Zone red */
  --sz-dark:#2f3b4a;
  --sz-bg:#fff;
}

*{ box-sizing:border-box; }
body{ color:var(--sz-text); background:var(--sz-bg); font-family: Arial, Helvetica, sans-serif; margin:0; }
a{ color:inherit; text-decoration:none; }
a:hover{ text-decoration:none; }
img{ max-width:100%; }

/* Header */
.sz-header{
  background:#fff;
  border-bottom:1px solid var(--sz-border);
  position:sticky;
  top:0;
  z-index:50;
}
.sz-header .container{
  max-width:1200px;
  margin:0 auto;
  padding:0 16px;
  display:flex;
  align-items:center;
  justify-content:space-between;
}
.sz-brand img{ height:48px; width:auto; }

.sz-nav{ display:flex; gap:2px; align-items:center; }
.sz-nav a{
  display:inline-block;
  padding:20px 12px;
  font-weight:700;
  color:#111;
  font-size:15px;
}
.sz-nav a.active{ color:var(--sz-accent); }
.sz-search-btn{
  border:1px solid var(--sz-border);
  background:#fff;
  width:40px;
  height:40px;
  border-radius:6px;
  display:grid;
  place-items:center;
  cursor:pointer;
}

/* Breadcrumb */
.sz-breadcrumb{
  border-bottom:1px solid var(--sz-border);
  background:#fff;
}
.sz-breadcrumb .container{
  max-width:1200px;
  margin:0 auto;
  padding:10px 16px;
  color:var(--sz-muted);
  font-size:14px;
}
.sz-breadcrumb a{ color:var(--sz-muted); }
.sz-breadcrumb span{ margin:0 6px; }

/* Layout */
.container{ max-width:1200px; margin:0 auto; padding:0 16px; }
.sz-page{ padding:22px 0 40px; }
.sz-page-title{ font-size:28px; font-weight:800; margin:6px 0 18px; }

.sz-grid{ display:grid; grid-template-columns: 280px 1fr; gap:22px; }
@media (max-width: 992px){
  .sz-grid{ grid-template-columns:1fr; }
  .sz-nav{ display:none; }
}

/* Sideboxes */
.sz-sidebox{
  border:1px solid var(--sz-border);
  background:#fff;
}
.sz-sidebox-title{
  background:#111;
  color:#fff;
  padding:12px 14px;
  font-weight:800;
}
.sz-searchbar{ display:flex; gap:8px; padding:12px; }
.sz-searchbar input{
  flex:1;
  border:1px solid var(--sz-border);
  padding:10px 10px;
  outline:none;
}
.sz-searchbar button{
  border:0;
  background:var(--sz-accent);
  color:#fff;
  padding:0 14px;
  border-radius:4px;
  cursor:pointer;
}

/* Category Tree */
.sz-cat-tree{ padding:10px 0; }
.sz-cat-group{ padding:8px 12px; border-top:1px solid var(--sz-border); }
.sz-cat-group:first-child{ border-top:0; }
.sz-cat-group-title{ font-weight:900; font-size:13px; margin-bottom:8px; color:#111; letter-spacing:.2px; }
.sz-cat-item{
  display:block;
  padding:8px 6px;
  border-left:3px solid transparent;
  color:#333;
  font-size:14px;
}
.sz-cat-item:hover{ background:#fafafa; }
.sz-cat-item.active{ border-left-color:var(--sz-accent); color:var(--sz-accent); }

/* Product Grid */
.sz-product-grid{ display:grid; grid-template-columns: repeat(3, 1fr); gap:16px; }
@media (max-width: 992px){ .sz-product-grid{ grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px){ .sz-product-grid{ grid-template-columns: 1fr; } }

.sz-product-card{
  display:block;
  border:1px solid var(--sz-border);
  background:#fff;
  height:100%;
}
.sz-product-thumb{
  position:relative;
  padding:18px;
  border-bottom:1px solid var(--sz-border);
  background:#fff;
  min-height:190px;
  display:flex;
  align-items:center;
  justify-content:center;
}
.sz-product-thumb img{ max-width:100%; max-height:220px; object-fit:contain; }
.sz-product-name{
  padding:12px 12px;
  font-weight:800;
  color:#111;
  min-height:52px;
  font-size:15px;
}
.lambda{
  color:#fff;
  font-size:12px;
  padding:4px 8px;
  border-radius:2px;
}

/* Product Detail */
.sz-two-col{ display:grid; grid-template-columns: 1fr 1fr; gap:18px; }
@media (max-width: 992px){ .sz-two-col{ grid-template-columns:1fr; } }

.sz-detail-img{
  border:1px solid var(--sz-border);
  background:#fff;
  padding:14px;
  display:flex;
  align-items:center;
  justify-content:center;
  min-height:380px;
}
.sz-detail-img img{ max-width:100%; max-height:420px; object-fit:contain; }
.sz-thumbs{
  display:flex;
  gap:10px;
  margin-top:10px;
  flex-wrap:wrap;
}
.sz-thumb-btn{
  border:1px solid var(--sz-border);
  background:#fff;
  padding:6px;
  width:64px;
  height:64px;
  cursor:pointer;
}
.sz-thumb-btn img{ width:100%; height:100%; object-fit:contain; }
.sz-detail-title{ font-size:28px; font-weight:900; margin-bottom:8px; }
.sz-detail-meta{ color:var(--sz-muted); font-size:14px; line-height:1.6; }
.sz-btn{
  display:inline-block;
  background:var(--sz-accent);
  color:#fff;
  padding:10px 18px;
  border-radius:4px;
  font-weight:800;
}

/* Tabs */
.sz-tabs{ border:1px solid var(--sz-border); background:#fff; margin-top:18px; }
.sz-tab-head{
  display:flex;
  gap:0;
  border-bottom:1px solid var(--sz-border);
  flex-wrap:wrap;
}
.sz-tab-head button{
  border:0;
  background:#f7f7f7;
  padding:12px 14px;
  font-weight:800;
  cursor:pointer;
}
.sz-tab-head button.active{
  background:#fff;
  border-bottom:2px solid var(--sz-accent);
  color:#111;
}
.sz-tab-body{ padding:14px; }
.sz-tab-panel{ display:none; }
.sz-tab-panel.active{ display:block; }
.sz-table{
  width:100%;
  border-collapse:collapse;
}
.sz-table th, .sz-table td{
  border:1px solid var(--sz-border);
  padding:10px;
  text-align:left;
  font-size:14px;
}
.sz-empty{
  border:1px dashed var(--sz-border);
  padding:20px;
  color:var(--sz-muted);
  text-align:center;
}

/* Homepage sections */
.sz-hero{
  border-bottom:1px solid var(--sz-border);
  background:#fff;
}
.sz-hero-inner{
  display:grid;
  grid-template-columns: 1.1fr .9fr;
  gap:18px;
  padding:26px 0;
  align-items:center;
}
@media (max-width: 992px){ .sz-hero-inner{ grid-template-columns:1fr; } }
.sz-hero h1{ font-size:40px; margin:0 0 10px; font-weight:900; }
.sz-hero p{ color:var(--sz-muted); margin:0 0 16px; line-height:1.7; }
.sz-hero-cta{ display:flex; gap:10px; flex-wrap:wrap; }
.sz-hero-cta a.secondary{ background:#111; }

.sz-section{ padding:34px 0; }
.sz-section h2{ font-size:28px; font-weight:900; margin:0 0 12px; }
.sz-section p.lead{ color:var(--sz-muted); margin:0 0 18px; line-height:1.7; }

.sz-cards{ display:grid; grid-template-columns: repeat(3, 1fr); gap:16px; }
@media (max-width: 992px){ .sz-cards{ grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px){ .sz-cards{ grid-template-columns: 1fr; } }

.sz-card{
  border:1px solid var(--sz-border);
  background:#fff;
  padding:16px;
}
.sz-card h3{ margin:0 0 6px; font-size:18px; font-weight:900; }
.sz-card p{ margin:0; color:var(--sz-muted); line-height:1.6; font-size:14px; }

.sz-mini-grid{ display:grid; grid-template-columns: repeat(4, 1fr); gap:12px; }
@media (max-width: 992px){ .sz-mini-grid{ grid-template-columns: repeat(2, 1fr); } }
.sz-logo-tile{
  border:1px solid var(--sz-border);
  background:#fff;
  padding:12px;
  display:flex;
  align-items:center;
  justify-content:center;
  min-height:90px;
}

.sz-quote{
  border:1px solid var(--sz-border);
  background:#fff;
  padding:16px;
}
.sz-quote p{ margin:0 0 10px; color:#333; line-height:1.7; }
.sz-quote .who{ font-weight:900; }
.sz-quote .role{ color:var(--sz-muted); font-size:13px; }

.sz-gallery{ display:grid; grid-template-columns: repeat(3, 1fr); gap:12px; }
@media (max-width: 992px){ .sz-gallery{ grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px){ .sz-gallery{ grid-template-columns: 1fr; } }
.sz-gallery a{
  border:1px solid var(--sz-border);
  background:#fff;
  padding:12px;
  display:block;
}

/* Footer */
.sz-footer{
  border-top:1px solid var(--sz-border);
  padding:20px 0;
  background:#f5f5f5;
}
.sz-footer-row{
  display:grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap:18px;
  padding:12px 0;
}
@media (max-width: 992px){ .sz-footer-row{ grid-template-columns:1fr; } }
.sz-footer-bottom{ border-top:1px solid var(--sz-border); padding-top:12px; color:var(--sz-muted); font-size:14px; }
.sz-footer a{ color:#111; }

/* Footer Certifications */
.sz-cert-strip{
  border-top:1px solid var(--sz-border);
  padding-top:14px;
  margin-top:10px;
}
.sz-cert-grid{
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap:12px;
}
@media (max-width: 992px){
  .sz-cert-grid{ grid-template-columns: 1fr; }
}
.sz-cert-item{
  display:flex;
  gap:12px;
  align-items:center;
  border:1px solid var(--sz-border);
  background:#fff;
  padding:10px 12px;
}
.sz-cert-item img{
  width:72px;
  height:72px;
  object-fit:contain;
}
.sz-cert-item .title{
  font-weight:900;
  margin:0;
  line-height:1.2;
}
.sz-cert-item .sub{
  margin:4px 0 0;
  color:var(--sz-muted);
  font-size:13px;
  line-height:1.3;
}

/* Mobile Nav */
.sz-menu-btn{
  display:none;
  width:44px;
  height:44px;
  border:1px solid var(--sz-border);
  background:#fff;
  border-radius:8px;
  cursor:pointer;
  align-items:center;
  justify-content:center;
  gap:4px;
}
.sz-menu-btn span{
  display:block;
  width:18px;
  height:2px;
  background:#111;
}
.sz-mobile-nav{
  display:none;
  border-bottom:1px solid var(--sz-border);
  background:#fff;
}
.sz-mobile-nav.open{ display:block; }
.sz-mobile-nav .container{
  padding:10px 16px 14px;
  display:grid;
  gap:8px;
}
.sz-mobile-nav a{
  padding:10px 12px;
  border:1px solid var(--sz-border);
  border-radius:10px;
  font-weight:800;
}
.sz-mobile-nav a.active{ border-color:var(--sz-accent); color:var(--sz-accent); }

/* Fullscreen Hero Slider */
.sz-hero-slider{
  position:relative;
  height:calc(100vh - 80px);
  min-height:520px;
  overflow:hidden;
  border-bottom:1px solid var(--sz-border);
  background:#fff;
}
.sz-hero-slider .sz-slide{
  position:absolute;
  inset:0;
  background-size:cover;
  background-position:center;
  opacity:0;
  transition: opacity .6s ease;
}
.sz-hero-slider .sz-slide.active{ opacity:1; }
.sz-hero-slider .sz-slide::before{
  content:"";
  position:absolute; inset:0;
  /* background: rgba(255,255,255,.55); */
}
.sz-hero-slider .sz-slide-inner{
  position:relative;
  height:100%;
  display:flex;
  align-items:center;
}
.sz-hero-slider .sz-slide-content{ max-width:640px; }
.sz-hero-slider h1{
  margin:0 0 10px;
  font-size:64px;
  font-weight:900;
  letter-spacing:.4px;
  color: var(--sz-accent);
}
.sz-hero-slider p{
  margin:0 0 18px;
  color: var(--sz-muted);
  font-size:18px;
  line-height:1.7;
}
.sz-hero-slider .hero-btn{
  display:inline-block;
  background: var(--sz-accent);
  color:#fff;
  padding:12px 22px;
  border-radius:6px;
  font-weight:900;
}
.sz-hero-slider .hero-nav{
  position:absolute;
  top:50%;
  transform:translateY(-50%);
  width:44px;
  height:44px;
  border-radius:999px;
  border:1px solid rgba(0,0,0,.15);
  background: rgba(255,255,255,.75);
  display:grid;
  place-items:center;
  cursor:pointer;
  font-size:26px;
  user-select:none;
}
.sz-hero-slider .hero-nav.prev{ left:14px; }
.sz-hero-slider .hero-nav.next{ right:14px; }
.sz-hero-slider .hero-dots{
  position:absolute;
  left:50%;
  transform:translateX(-50%);
  bottom:14px;
  display:flex;
  gap:8px;
}
.sz-hero-slider .hero-dot{
  width:10px; height:10px;
  border-radius:999px;
  border:1px solid rgba(0,0,0,.25);
  background: rgba(255,255,255,.85);
  cursor:pointer;
}
.sz-hero-slider .hero-dot.active{
  background: var(--sz-accent);
  border-color: var(--sz-accent);
}

.sz-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 10px;
  background: #fff;
}

.sz-table th,
.sz-table td {
  border: 1px solid #e6e6e6;
  padding: 12px 14px;
  text-align: left;
  font-size: 14px;
  vertical-align: top;
}

.sz-table thead th {
  background: #f3f5f7;
  font-weight: 800;
}

.sz-spec-note {
  margin-top: 10px;
  font-size: 13px;
  color: #666;
}
.sz-cert-tags-single{
  border-top:1px solid var(--sz-border);
  margin-top:28px;
  padding-top:20px;
  text-align:center;
}

.sz-cert-tags-single img{
  max-width:100%;
  height:auto;
  display:block;
  margin:0 auto;
}

@media (max-width: 992px){
  .sz-menu-btn{ display:flex; }
  .sz-search-btn{ display:none; }
  .sz-hero-slider{ height:calc(100vh - 72px); min-height:420px; }
  .sz-hero-slider h1{ font-size:42px; }
  .sz-hero-slider p{ font-size:15px; }
}
@media (max-width: 420px){
  .sz-hero-slider h1{ font-size:34px; }
}