/* ============================================================
   TOP PTFE & Fluoropolymer Manufacturer — main.css
   ============================================================ */
:root{
  --ptfe-primary:#0a4da3;
  --ptfe-primary-dark:#07356f;
  --ptfe-primary-darker:#041f42;
  --ptfe-accent:#f5821f;
  --ptfe-accent-dark:#d96a0a;
  --ptfe-dark:#0b1f3a;
  --ptfe-text:#2b3240;
  --ptfe-muted:#5c6675;
  --ptfe-bg:#f4f7fb;
  --ptfe-bg-alt:#eaf0f8;
  --ptfe-line:#e3e9f2;
  --ptfe-white:#ffffff;
  --ptfe-green:#1f9d55;
  --ptfe-radius:10px;
  --ptfe-radius-sm:6px;
  --ptfe-shadow:0 4px 18px rgba(11,31,58,.08);
  --ptfe-shadow-lg:0 12px 36px rgba(11,31,58,.14);
  --ptfe-font-body:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;
  --ptfe-font-head:'Poppins',var(--ptfe-font-body);
  --ptfe-container:1240px;
}
*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{font-family:var(--ptfe-font-body);color:var(--ptfe-text);font-size:16px;line-height:1.7;background:var(--ptfe-white);-webkit-font-smoothing:antialiased;}
img{max-width:100%;height:auto;display:block;}
a{color:var(--ptfe-primary);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--ptfe-accent);}
h1,h2,h3,h4,h5,h6{font-family:var(--ptfe-font-head);color:var(--ptfe-dark);line-height:1.25;font-weight:600;}
h1{font-size:2.4rem;}
h2{font-size:1.9rem;margin-bottom:.4em;}
h3{font-size:1.25rem;}
p{margin-bottom:1em;}
ul,ol{margin:0 0 1em 1.3em;}
.screen-reader-text{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(1px,1px,1px,1px);}
.skip-link:focus{clip:auto;width:auto;height:auto;background:var(--ptfe-primary);color:#fff;padding:10px 16px;z-index:99999;top:0;left:0;position:fixed;}

.ptfe-container{max-width:var(--ptfe-container);margin:0 auto;padding:0 20px;}

/* ---------- Buttons ---------- */
.ptfe-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 26px;border-radius:var(--ptfe-radius-sm);font-family:var(--ptfe-font-head);font-weight:600;font-size:.95rem;line-height:1.2;border:2px solid transparent;cursor:pointer;transition:all .22s ease;text-align:center;}
.ptfe-btn:hover{transform:translateY(-2px);box-shadow:var(--ptfe-shadow);}
.ptfe-btn-primary{background:var(--ptfe-primary);color:#fff;}
.ptfe-btn-primary:hover{background:var(--ptfe-primary-dark);color:#fff;}
.ptfe-btn-accent{background:var(--ptfe-accent);color:#fff;}
.ptfe-btn-accent:hover{background:var(--ptfe-accent-dark);color:#fff;}
.ptfe-btn-outline{background:transparent;color:var(--ptfe-primary);border-color:var(--ptfe-primary);}
.ptfe-btn-outline:hover{background:var(--ptfe-primary);color:#fff;}
.ptfe-btn-ghost{background:rgba(255,255,255,.12);color:#fff;border-color:rgba(255,255,255,.5);backdrop-filter:blur(2px);}
.ptfe-btn-ghost:hover{background:rgba(255,255,255,.22);color:#fff;}
.ptfe-btn-whatsapp{background:#1faa53;color:#fff;}
.ptfe-btn-whatsapp:hover{background:#178a43;color:#fff;}
.ptfe-btn-lg{padding:15px 34px;font-size:1.02rem;}
.ptfe-btn-sm{padding:8px 16px;font-size:.85rem;}
.ptfe-btn-block{width:100%;}
.ptfe-center{text-align:center;margin-top:34px;display:flex;gap:14px;justify-content:center;flex-wrap:wrap;}

/* ---------- Topbar ---------- */
.ptfe-topbar{background:var(--ptfe-dark);color:#c9d4e4;font-size:.85rem;}
.ptfe-topbar-inner{display:flex;justify-content:space-between;align-items:center;min-height:38px;flex-wrap:wrap;gap:6px;}
.ptfe-topbar a{color:#c9d4e4;}
.ptfe-topbar a:hover{color:#fff;}
.nap-sep{margin:0 10px;color:#55688a;}
.ptfe-topbar-cta{background:var(--ptfe-accent);color:#fff !important;padding:4px 14px;border-radius:4px;font-weight:600;}
.ptfe-topbar-cta:hover{background:var(--ptfe-accent-dark);}

/* ---------- Header ---------- */
.ptfe-header{background:#fff;border-bottom:1px solid var(--ptfe-line);position:sticky;top:0;z-index:900;box-shadow:0 2px 12px rgba(11,31,58,.05);}
.ptfe-header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:76px;}
.ptfe-brand{display:flex;align-items:center;flex-shrink:0;}
.ptfe-brand img{max-height:52px;width:auto;}
.ptfe-brand-text{display:flex;flex-direction:column;line-height:1.1;}
.ptfe-brand-name{font-family:var(--ptfe-font-head);font-weight:800;font-size:1.45rem;color:var(--ptfe-primary);}
.ptfe-brand-sub{font-size:.72rem;color:var(--ptfe-muted);letter-spacing:.4px;text-transform:uppercase;}
.ptfe-nav{flex:1;display:flex;justify-content:flex-end;}
.ptfe-menu{list-style:none;display:flex;gap:4px;margin:0;}
.ptfe-menu>li{position:relative;}
.ptfe-menu>li>a{display:block;padding:10px 14px;font-family:var(--ptfe-font-head);font-weight:500;font-size:.93rem;color:var(--ptfe-dark);border-radius:6px;}
.ptfe-menu>li>a:hover,.ptfe-menu>li.current-menu-item>a,.ptfe-menu>li.current-menu-ancestor>a{color:var(--ptfe-primary);background:var(--ptfe-bg);}
.ptfe-menu .sub-menu{list-style:none;position:absolute;top:100%;left:0;background:#fff;border:1px solid var(--ptfe-line);border-radius:8px;min-width:230px;box-shadow:var(--ptfe-shadow-lg);opacity:0;visibility:hidden;transform:translateY(8px);transition:all .2s ease;margin:0;padding:6px;z-index:950;}
.ptfe-menu>li:hover>.sub-menu{opacity:1;visibility:visible;transform:translateY(0);}
.ptfe-menu .sub-menu a{display:block;padding:9px 14px;font-size:.9rem;color:var(--ptfe-text);border-radius:5px;}
.ptfe-menu .sub-menu a:hover{background:var(--ptfe-bg);color:var(--ptfe-primary);}
.ptfe-menu-toggle{display:none;background:none;border:none;cursor:pointer;padding:8px;}
.ptfe-menu-bar{display:block;width:26px;height:3px;background:var(--ptfe-dark);margin:5px 0;border-radius:2px;transition:all .25s;}
.ptfe-header-actions{display:flex;align-items:center;gap:14px;flex-shrink:0;}
.ptfe-header-phone{display:flex;flex-direction:column;line-height:1.15;text-align:right;}
.ptfe-header-phone-label{font-size:.7rem;text-transform:uppercase;letter-spacing:.5px;color:var(--ptfe-muted);}
.ptfe-header-phone-num{font-family:var(--ptfe-font-head);font-weight:700;color:var(--ptfe-primary);font-size:1rem;}

/* ---------- Hero ---------- */
.ptfe-hero{position:relative;overflow:hidden;}
.ptfe-hero-slides{position:relative;min-height:560px;}
.ptfe-hero-slide{position:absolute;inset:0;display:none;align-items:center;background-size:cover;background-position:center;}
.ptfe-hero-slide.is-active{display:flex;}
.ptfe-hero-overlay{position:absolute;inset:0;background:linear-gradient(100deg,rgba(4,31,66,.92) 0%,rgba(7,53,111,.82) 45%,rgba(10,77,163,.55) 100%);}
.ptfe-hero-content{position:relative;z-index:2;padding:80px 20px;max-width:var(--ptfe-container);width:100%;}
.ptfe-hero-eyebrow{display:inline-block;background:rgba(245,130,31,.9);color:#fff;font-size:.78rem;font-weight:700;letter-spacing:1.5px;text-transform:uppercase;padding:6px 16px;border-radius:30px;margin-bottom:20px;}
.ptfe-hero-title{color:#fff;font-size:3rem;font-weight:700;max-width:780px;margin-bottom:18px;}
.ptfe-hero-sub{color:#dbe6f5;font-size:1.12rem;max-width:680px;margin-bottom:30px;}
.ptfe-hero-actions{display:flex;gap:14px;flex-wrap:wrap;}
.ptfe-hero-dots{position:absolute;bottom:22px;left:50%;transform:translateX(-50%);display:flex;gap:10px;z-index:5;}
.ptfe-hero-dot{width:12px;height:12px;border-radius:50%;border:none;background:rgba(255,255,255,.45);cursor:pointer;transition:all .25s;}
.ptfe-hero-dot.is-active{background:var(--ptfe-accent);transform:scale(1.2);}

/* ---------- Stats ---------- */
.ptfe-stats{background:var(--ptfe-primary);position:relative;}
.ptfe-stats::before{content:"";position:absolute;inset:0;background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='60' height='60' viewBox='0 0 60 60'%3E%3Cpath d='M30 0l30 30-30 30L0 30z' fill='rgba(255,255,255,.04)'/%3E%3C/svg%3E");opacity:.5;}
.ptfe-stats-grid{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:24px;padding:42px 20px;}
.ptfe-stat{text-align:center;color:#fff;}
.ptfe-stat-num{display:block;font-family:var(--ptfe-font-head);font-weight:700;font-size:2.5rem;color:#fff;}
.ptfe-stat-txt{color:#c9d9f0;font-size:.95rem;}

/* ---------- Sections ---------- */
.ptfe-section{padding:74px 0;}
.ptfe-section-alt{background:var(--ptfe-bg);}
.ptfe-section-head{text-align:center;max-width:760px;margin:0 auto 44px;}
.ptfe-section-head p{color:var(--ptfe-muted);}
.ptfe-eyebrow{display:inline-block;color:var(--ptfe-accent);font-weight:700;letter-spacing:2px;text-transform:uppercase;font-size:.8rem;margin-bottom:10px;}
.ptfe-check-list{list-style:none;margin:0 0 24px;}
.ptfe-check-list li{padding-left:30px;position:relative;margin-bottom:10px;}
.ptfe-check-list li::before{content:"✓";position:absolute;left:0;top:0;color:var(--ptfe-green);font-weight:700;}

/* About snippet */
.ptfe-about-snippet{padding:74px 0;background:#fff;}
.ptfe-about-snippet-grid{display:grid;grid-template-columns:1fr 1.15fr;gap:50px;align-items:center;}
.ptfe-about-snippet-media{position:relative;min-height:380px;border-radius:var(--ptfe-radius);overflow:hidden;box-shadow:var(--ptfe-shadow-lg);}
.ptfe-about-snippet-media img{border-radius:var(--ptfe-radius);box-shadow:var(--ptfe-shadow-lg);}
.ptfe-about-bg{position:absolute;inset:0;background-size:cover;background-position:center;background-repeat:no-repeat;}
.ptfe-about-snippet-body h2{margin:6px 0 18px;}
.ptfe-about-snippet-actions{display:flex;gap:14px;margin-top:22px;flex-wrap:wrap;}

/* Product category grid */
.ptfe-cat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-bottom:44px;}
.ptfe-cat-card{background:#fff;border:1px solid var(--ptfe-line);border-radius:var(--ptfe-radius);padding:24px 20px;display:flex;flex-direction:column;gap:6px;transition:all .25s;box-shadow:var(--ptfe-shadow);}
.ptfe-cat-card:hover{transform:translateY(-5px);border-color:var(--ptfe-primary);box-shadow:var(--ptfe-shadow-lg);}
.ptfe-cat-icon{font-family:var(--ptfe-font-head);font-weight:700;font-size:1.3rem;color:var(--ptfe-accent);}
.ptfe-cat-name{font-family:var(--ptfe-font-head);font-weight:600;color:var(--ptfe-dark);}
.ptfe-cat-count{font-size:.82rem;color:var(--ptfe-muted);}

/* Product cards */
.ptfe-product-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.ptfe-home-products-list{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;}
.ptfe-product-card{background:#fff;border:1px solid var(--ptfe-line);border-radius:var(--ptfe-radius);overflow:hidden;display:flex;flex-direction:column;transition:all .25s;box-shadow:var(--ptfe-shadow);height:100%;}
.ptfe-product-card:hover{transform:translateY(-5px);box-shadow:var(--ptfe-shadow-lg);}
.ptfe-product-card-media{position:relative;aspect-ratio:4/3;overflow:hidden;background:var(--ptfe-bg);display:flex;align-items:center;justify-content:center;}
.ptfe-product-card-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.ptfe-product-card:hover .ptfe-product-card-media img{transform:scale(1.06);}
.ptfe-product-card-cat{position:absolute;top:12px;left:12px;background:var(--ptfe-primary);color:#fff;font-size:.72rem;font-weight:600;padding:4px 10px;border-radius:20px;letter-spacing:.4px;}
.ptfe-product-card-body{padding:18px 20px 20px;display:flex;flex-direction:column;flex:1;}
.ptfe-product-card-title{font-size:1.02rem;margin-bottom:6px;}
.ptfe-product-card-title a{color:var(--ptfe-dark);}
.ptfe-product-card-title a:hover{color:var(--ptfe-primary);}
.ptfe-product-card-excerpt{font-size:.88rem;color:var(--ptfe-muted);flex:1;}
.ptfe-product-card-actions{display:flex;justify-content:space-between;align-items:center;margin-top:14px;}
.ptfe-link-more{font-weight:600;color:var(--ptfe-primary);font-size:.9rem;}
.ptfe-link-more:hover{color:var(--ptfe-accent);}
.ptfe-noimg{display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--ptfe-bg),var(--ptfe-bg-alt));color:var(--ptfe-muted);font-family:var(--ptfe-font-head);font-weight:600;width:100%;height:100%;min-height:180px;}
.ptfe-noimg-product{min-height:320px;font-size:1.1rem;}

/* Industry cards */
.ptfe-industry-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.ptfe-industry-card{background:#fff;border:1px solid var(--ptfe-line);border-radius:var(--ptfe-radius);padding:28px 24px;display:block;transition:all .25s;box-shadow:var(--ptfe-shadow);position:relative;overflow:hidden;}
.ptfe-industry-card::before{content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:var(--ptfe-accent);opacity:0;transition:opacity .25s;}
.ptfe-industry-card:hover{transform:translateY(-5px);box-shadow:var(--ptfe-shadow-lg);border-color:var(--ptfe-primary);}
.ptfe-industry-card:hover::before{opacity:1;}
.ptfe-industry-card h3{margin-bottom:10px;}
.ptfe-industry-card p{color:var(--ptfe-muted);font-size:.93rem;}

/* Advantages */
.ptfe-adv-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;}
.ptfe-adv-card{background:#fff;border:1px solid var(--ptfe-line);border-radius:var(--ptfe-radius);padding:30px 24px;text-align:center;transition:all .25s;box-shadow:var(--ptfe-shadow);}
.ptfe-adv-card:hover{transform:translateY(-5px);box-shadow:var(--ptfe-shadow-lg);border-color:var(--ptfe-accent);}
.ptfe-adv-ico{width:64px;height:64px;margin:0 auto 16px;border-radius:16px;background:var(--ptfe-bg);display:flex;align-items:center;justify-content:center;position:relative;}
.ptfe-adv-ico::after{content:"";width:32px;height:32px;border-radius:8px;background:var(--ptfe-primary);}
.ptfe-adv-card:nth-child(2n) .ptfe-adv-ico::after{background:var(--ptfe-accent);}
.ptfe-adv-card h3{font-size:1.08rem;margin-bottom:8px;}
.ptfe-adv-card p{font-size:.9rem;color:var(--ptfe-muted);}

/* Case cards */
.ptfe-case-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;}
.ptfe-case-card{background:#fff;border:1px solid var(--ptfe-line);border-radius:var(--ptfe-radius);padding:28px 26px;display:block;transition:all .25s;box-shadow:var(--ptfe-shadow);}
.ptfe-case-card:hover{transform:translateY(-5px);box-shadow:var(--ptfe-shadow-lg);border-color:var(--ptfe-accent);}
.ptfe-case-card-full{display:block;}
.ptfe-case-tag{display:inline-block;background:var(--ptfe-bg-alt);color:var(--ptfe-primary);font-size:.75rem;font-weight:700;text-transform:uppercase;letter-spacing:1px;padding:4px 12px;border-radius:20px;margin-bottom:12px;}
.ptfe-case-card h3{font-size:1.12rem;margin-bottom:8px;}
.ptfe-case-card p{color:var(--ptfe-muted);font-size:.92rem;}

/* Blog cards */
.ptfe-post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.ptfe-post-grid-single{grid-template-columns:1fr;}
.ptfe-post-card{background:#fff;border:1px solid var(--ptfe-line);border-radius:var(--ptfe-radius);overflow:hidden;display:flex;flex-direction:column;transition:all .25s;box-shadow:var(--ptfe-shadow);height:100%;}
.ptfe-post-card:hover{transform:translateY(-5px);box-shadow:var(--ptfe-shadow-lg);}
.ptfe-post-card-media{aspect-ratio:16/9;min-height:190px;overflow:hidden;background:var(--ptfe-bg);display:flex;align-items:center;justify-content:center;}
.ptfe-post-card-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s;}
.ptfe-post-card:hover .ptfe-post-card-media img{transform:scale(1.05);}
.ptfe-post-card-body{padding:20px;display:flex;flex-direction:column;flex:1;min-width:0;}
.ptfe-post-card-meta{display:flex;justify-content:space-between;align-items:center;font-size:.8rem;color:var(--ptfe-muted);margin-bottom:10px;}
.ptfe-post-card-cat{background:var(--ptfe-bg-alt);color:var(--ptfe-primary);padding:3px 10px;border-radius:20px;font-weight:600;white-space:nowrap;}
.ptfe-post-card-title{font-size:1.05rem;margin-bottom:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;min-height:2.9em;}
.ptfe-post-card-title a{color:var(--ptfe-dark);}
.ptfe-post-card-title a:hover{color:var(--ptfe-primary);}
.ptfe-post-card-excerpt{font-size:.9rem;color:var(--ptfe-muted);flex:1;margin-bottom:14px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.ptfe-noimg-post{min-height:150px;}

/* FAQ */
.ptfe-faq-grid{max-width:860px;margin:0 auto;}
.ptfe-faq-grid-page{max-width:none;}
.ptfe-faq-item{background:#fff;border:1px solid var(--ptfe-line);border-radius:var(--ptfe-radius);margin-bottom:12px;overflow:hidden;transition:border-color .2s;}
.ptfe-faq-item[open]{border-color:var(--ptfe-primary);}
.ptfe-faq-item summary{cursor:pointer;padding:16px 20px;font-family:var(--ptfe-font-head);font-weight:600;color:var(--ptfe-dark);list-style:none;position:relative;padding-right:44px;}
.ptfe-faq-item summary::-webkit-details-marker{display:none;}
.ptfe-faq-item summary::after{content:"+";position:absolute;right:18px;top:50%;transform:translateY(-50%);font-size:1.4rem;color:var(--ptfe-primary);transition:transform .2s;}
.ptfe-faq-item[open] summary::after{transform:translateY(-50%) rotate(45deg);}
.ptfe-faq-item p{padding:0 20px 18px;color:var(--ptfe-muted);}

/* CTA band */
.ptfe-cta-band{background:linear-gradient(110deg,var(--ptfe-primary-dark) 0%,var(--ptfe-primary) 60%,#0d5cbf 100%);padding:64px 0;}
.ptfe-cta-inner{display:flex;align-items:center;justify-content:space-between;gap:30px;flex-wrap:wrap;}
.ptfe-cta-text{flex:1;min-width:280px;}
.ptfe-cta-text h2{color:#fff;margin-bottom:8px;}
.ptfe-cta-text p{color:#c9d9f0;margin:0;}
.ptfe-cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* ---------- Breadcrumb ---------- */
.ptfe-breadcrumb{background:var(--ptfe-bg);border-bottom:1px solid var(--ptfe-line);padding:11px 0;font-size:.85rem;position:sticky;top:76px;z-index:800;}
.ptfe-breadcrumb a{color:var(--ptfe-muted);}
.ptfe-breadcrumb a:hover{color:var(--ptfe-primary);}
.ptfe-breadcrumb .sep{margin:0 8px;color:#b7c1d0;}

/* ---------- Page hero ---------- */
.ptfe-page-hero{background:linear-gradient(120deg,var(--ptfe-primary-darker),var(--ptfe-primary-dark) 55%,var(--ptfe-primary));padding:58px 0 52px;color:#fff;}
.ptfe-page-hero-title{color:#fff;font-size:2.2rem;margin-bottom:8px;}
.ptfe-page-hero-sub{color:#c9d9f0;max-width:760px;}

/* ---------- Layout ---------- */
.ptfe-layout{display:grid;grid-template-columns:1fr 320px;gap:44px;padding:52px 20px;}
.ptfe-page-wrap{padding:52px 20px;max-width:980px;}
.ptfe-page-wide{max-width:var(--ptfe-container);}
.ptfe-article-header{margin-bottom:24px;}
.ptfe-article-title{font-size:2rem;margin-bottom:6px;}
.ptfe-article-content{color:var(--ptfe-text);}
.ptfe-article-content h2{margin-top:1.4em;}
.ptfe-article-content h3{margin-top:1.2em;}
.ptfe-article-content img{border-radius:var(--ptfe-radius);margin:1em 0;}
.ptfe-article-content table{width:100%;border-collapse:collapse;margin:1em 0;}
.ptfe-article-content td,.ptfe-article-content th{border:1px solid var(--ptfe-line);padding:10px 12px;}
.ptfe-article-content blockquote{border-left:4px solid var(--ptfe-accent);padding:10px 20px;background:var(--ptfe-bg);border-radius:0 var(--ptfe-radius-sm) var(--ptfe-radius-sm) 0;margin:1em 0;}
.ptfe-article-thumb img{border-radius:var(--ptfe-radius);margin-bottom:24px;}

/* Post meta / nav */
.ptfe-post-meta{display:flex;gap:14px;align-items:center;color:var(--ptfe-muted);font-size:.9rem;margin-bottom:8px;}
.ptfe-post-cat{background:var(--ptfe-bg-alt);color:var(--ptfe-primary);padding:3px 12px;border-radius:20px;font-weight:600;}
.ptfe-post-nav{display:flex;justify-content:space-between;gap:16px;margin-top:30px;padding-top:20px;border-top:1px solid var(--ptfe-line);}
.ptfe-post-inquiry{background:var(--ptfe-bg);padding:48px 0;}
.ptfe-post-inquiry-inner{text-align:center;}
.ptfe-post-inquiry-inner h2{margin-bottom:20px;}
.ptfe-post-inquiry .ptfe-inquiry-buttons{justify-content:center;}

/* ---------- Sidebar ---------- */
.ptfe-sidebar-widget{background:#fff;border:1px solid var(--ptfe-line);border-radius:var(--ptfe-radius);padding:22px;margin-bottom:22px;box-shadow:var(--ptfe-shadow);}
.ptfe-sidebar-title{font-size:1.05rem;margin-bottom:14px;padding-bottom:10px;border-bottom:2px solid var(--ptfe-bg-alt);}
.ptfe-sidebar-help{background:var(--ptfe-bg);}
.ptfe-sidebar-phone{font-family:var(--ptfe-font-head);font-weight:700;color:var(--ptfe-primary);text-align:center;margin-top:14px;}
.widget{margin-bottom:26px;font-size:.93rem;}
.widget-title{font-size:1.05rem;margin-bottom:12px;}
.widget ul{list-style:none;margin:0;}
.widget ul li{padding:7px 0;border-bottom:1px dashed var(--ptfe-line);}
.widget ul li:last-child{border-bottom:none;}

/* ---------- Product layout (list) ---------- */
.ptfe-product-layout{display:grid;grid-template-columns:280px 1fr;gap:36px;padding:48px 20px;}
.ptfe-product-sidebar{position:sticky;top:100px;align-self:start;}
.ptfe-cat-list{list-style:none;margin:0;}
.ptfe-cat-list li{border-bottom:1px dashed var(--ptfe-line);}
.ptfe-cat-list li:last-child{border-bottom:none;}
.ptfe-cat-list a{display:block;padding:10px 4px;color:var(--ptfe-text);}
.ptfe-cat-list a:hover,.ptfe-cat-list li.is-active a{color:var(--ptfe-primary);font-weight:600;}
.ptfe-cat-list .count{color:var(--ptfe-muted);font-size:.82rem;}

/* ---------- Product detail (common parts; styles in product-styles.css) ---------- */
.ptfe-product-detail .ptfe-breadcrumb{background:transparent;border-bottom:none;padding:16px 0 0;}
.ptfe-product-detail .ptfe-breadcrumb .sep{color:#9fb2cc;}
.ptfe-product-detail .ptfe-breadcrumb a{color:#cdd9ec;}
.ptfe-pd-badge{display:inline-block;background:var(--ptfe-accent);color:#fff;font-size:.74rem;font-weight:700;text-transform:uppercase;letter-spacing:1px;padding:4px 14px;border-radius:20px;margin-bottom:12px;}
.ptfe-pd-title{font-size:2rem;margin-bottom:10px;}
.ptfe-pd-brief{color:var(--ptfe-muted);font-size:1.02rem;}
.ptfe-pd-body{padding:44px 20px 64px;}
.ptfe-pd-grid{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:40px;align-items:start;}
.ptfe-pd-split{grid-column:1/-1;display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:40px;align-items:start;}
.ptfe-pd-lab-clean-fallback{grid-column:1/-1;}
.ptfe-pd-gallery-col{min-width:0;}
.ptfe-pd-gallery-sticky{position:sticky;top:20px;}
.ptfe-pd-main-img{display:block;border-radius:var(--ptfe-radius);overflow:hidden;box-shadow:var(--ptfe-shadow-lg);background:#f1f5fb;}
.ptfe-pd-main-img img{width:100%;height:auto;display:block;}
.ptfe-pd-info-col{min-width:0;}
@media (max-width:900px){
  .ptfe-pd-grid,.ptfe-pd-split{grid-template-columns:1fr;gap:28px;}
  .ptfe-pd-gallery-col{position:static;}
}
.ptfe-pd-section{margin-top:48px;}
.ptfe-pd-section-title{font-size:1.5rem;margin-bottom:18px;position:relative;padding-bottom:12px;}
.ptfe-pd-section-title::after{content:"";position:absolute;left:0;bottom:0;width:64px;height:3px;background:var(--ptfe-accent);border-radius:2px;}
.ptfe-pd-desc{color:var(--ptfe-text);}
.ptfe-pd-desc h2,.ptfe-pd-desc h3,.ptfe-pd-desc h4{margin-top:1.2em;}
.ptfe-pd-apps{columns:2;column-gap:40px;}
.ptfe-pd-inquiry-band{background:linear-gradient(120deg,var(--ptfe-primary-dark),var(--ptfe-primary));border-radius:var(--ptfe-radius);padding:44px 36px;margin-top:52px;text-align:center;}
.ptfe-pd-inquiry-band h2{color:#fff;}
.ptfe-pd-inquiry-band p{color:#dbe6f5;}
.ptfe-pd-inquiry-band .ptfe-inquiry-buttons{justify-content:center;}

/* Spec table */
.ptfe-spec-table{width:100%;border-collapse:collapse;background:#fff;border-radius:var(--ptfe-radius-sm);overflow:hidden;margin:16px 0;}
.ptfe-spec-table th{background:var(--ptfe-bg);color:var(--ptfe-dark);text-align:left;width:38%;font-weight:600;font-size:.9rem;}
.ptfe-spec-table th,.ptfe-spec-table td{border:1px solid var(--ptfe-line);padding:11px 14px;font-size:.9rem;}
.ptfe-spec-table td{color:var(--ptfe-text);}
.ptfe-spec-table-full{margin:0;}

/* ---------- Inquiry buttons & form ---------- */
.ptfe-inquiry-buttons{display:flex;gap:12px;flex-wrap:wrap;margin:20px 0;}
.ptfe-form-row{display:flex;gap:16px;margin-bottom:16px;}
.ptfe-form-col{flex:1;}
.ptfe-inquiry-form label{display:block;font-weight:600;font-size:.88rem;margin-bottom:6px;color:var(--ptfe-dark);}
.ptfe-inquiry-form input,.ptfe-inquiry-form textarea{width:100%;padding:11px 14px;border:1px solid var(--ptfe-line);border-radius:var(--ptfe-radius-sm);font-family:inherit;font-size:.95rem;background:#fff;color:var(--ptfe-text);transition:border-color .2s;}
.ptfe-inquiry-form input:focus,.ptfe-inquiry-form textarea:focus{outline:none;border-color:var(--ptfe-primary);}
.ptfe-form-note{font-size:.8rem;color:var(--ptfe-muted);margin-top:8px;text-align:center;}
.ptfe-form-msg{margin-top:12px;padding:12px 16px;border-radius:var(--ptfe-radius-sm);display:none;font-size:.92rem;}
.ptfe-form-msg.is-success{display:block;background:#e8f7ee;color:#14633a;border:1px solid #b9e6cb;}
.ptfe-form-msg.is-error{display:block;background:#fdecec;color:#8c1f1f;border:1px solid #f3c1c1;}

/* Modal */
.ptfe-modal-overlay{position:fixed;inset:0;background:rgba(4,20,40,.72);z-index:10000;display:none;align-items:center;justify-content:center;padding:20px;overflow-y:auto;}
.ptfe-modal-overlay.is-open{display:flex;}
.ptfe-modal{background:#fff;border-radius:14px;max-width:640px;width:100%;max-height:92vh;overflow-y:auto;position:relative;box-shadow:var(--ptfe-shadow-lg);}
.ptfe-modal-close{position:absolute;top:12px;right:14px;border:none;background:var(--ptfe-bg);width:34px;height:34px;border-radius:50%;font-size:1.3rem;line-height:1;cursor:pointer;color:var(--ptfe-dark);z-index:5;}
.ptfe-modal-close:hover{background:#fdecec;color:#c00;}
.ptfe-modal-body{padding:36px 34px 30px;}
.ptfe-inquiry-form-title{font-size:1.4rem;margin-bottom:20px;text-align:center;}

/* ---------- Footer ---------- */
.ptfe-footer{background:var(--ptfe-dark);color:#b9c6da;margin-top:0;}
.ptfe-footer-main{padding:64px 0 40px;}
.ptfe-footer-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr 1fr 1.2fr;gap:36px;}
.ptfe-footer .footer-title{color:#fff;font-size:1.02rem;margin-bottom:18px;position:relative;padding-bottom:10px;}
.ptfe-footer .footer-title::after{content:"";position:absolute;left:0;bottom:0;width:36px;height:2px;background:var(--ptfe-accent);}
.ptfe-footer p{font-size:.9rem;}
.ptfe-footer-links{list-style:none;margin:0;}
.ptfe-footer-links li{margin-bottom:9px;}
.ptfe-footer-links a{color:#b9c6da;font-size:.9rem;}
.ptfe-footer-links a:hover{color:#fff;padding-left:4px;}
.ptfe-footer-contact{list-style:none;margin:0;}
.ptfe-footer-contact li{margin-bottom:12px;font-size:.9rem;padding-left:28px;position:relative;}
.ptfe-footer-contact li::before{content:"•";position:absolute;left:8px;color:var(--ptfe-accent);font-weight:700;}
.ptfe-footer-contact a{color:#b9c6da;}
.ptfe-footer-contact a:hover{color:#fff;}
.ptfe-footer-social{display:flex;gap:10px;margin-top:16px;flex-wrap:wrap;}
.ptfe-social{background:rgba(255,255,255,.08);color:#cdd9ec !important;padding:6px 14px;border-radius:20px;font-size:.8rem;}
.ptfe-social:hover{background:var(--ptfe-accent);color:#fff !important;}
.ptfe-footer-note{font-size:.8rem;color:#8fa0bb;margin-top:14px;}
.ptfe-footer-legal{background:rgba(0,0,0,.25);padding:18px 0;font-size:.84rem;}
.ptfe-footer-legal-inner{display:flex;justify-content:space-between;align-items:center;gap:14px;flex-wrap:wrap;}
.ptfe-footer-legal p{margin:0;color:#8fa0bb;}
.ptfe-legal-links{list-style:none;display:flex;gap:18px;margin:0;}
.ptfe-legal-links a{color:#b9c6da;}
.ptfe-legal-links a:hover{color:#fff;}

/* Float WhatsApp */
.ptfe-float-wa{position:fixed;right:22px;bottom:24px;background:#1faa53;color:#fff;width:56px;height:56px;border-radius:50%;display:flex;align-items:center;justify-content:center;box-shadow:0 8px 24px rgba(31,170,83,.4);z-index:9000;animation:ptfe-pulse 2.4s infinite;}
.ptfe-float-wa:hover{background:#178a43;color:#fff;transform:scale(1.08);}
@keyframes ptfe-pulse{0%{box-shadow:0 8px 24px rgba(31,170,83,.4),0 0 0 0 rgba(31,170,83,.35);}70%{box-shadow:0 8px 24px rgba(31,170,83,.4),0 0 0 18px rgba(31,170,83,0);}100%{box-shadow:0 8px 24px rgba(31,170,83,.4),0 0 0 0 rgba(31,170,83,0);}}

/* ---------- Contact page ---------- */
.ptfe-contact-wrap{display:grid;grid-template-columns:380px 1fr;gap:40px;padding:52px 20px;}
.ptfe-contact-card{background:#fff;border:1px solid var(--ptfe-line);border-radius:var(--ptfe-radius);padding:26px;margin-bottom:22px;box-shadow:var(--ptfe-shadow);}
.ptfe-contact-card h3{font-size:1.1rem;margin-bottom:14px;}
.ptfe-contact-list{list-style:none;margin:0;}
.ptfe-contact-list li{margin-bottom:12px;font-size:.95rem;}
.ptfe-contact-list strong{color:var(--ptfe-dark);min-width:92px;display:inline-block;}
.ptfe-map iframe{width:100%;height:260px;border:0;border-radius:var(--ptfe-radius-sm);}

/* ---------- About page ---------- */
.ptfe-about-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-bottom:40px;}
.ptfe-about-stat{background:var(--ptfe-primary);color:#fff;border-radius:var(--ptfe-radius);padding:26px 18px;text-align:center;}
.ptfe-about-stat-num{display:block;font-family:var(--ptfe-font-head);font-weight:700;font-size:1.7rem;}
.ptfe-about-stat-txt{font-size:.86rem;color:#c9d9f0;}
.ptfe-about-capabilities{margin-top:46px;}

/* ---------- Certificates ---------- */
.ptfe-cert-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-bottom:44px;}
.ptfe-cert-card{background:#fff;border:1px solid var(--ptfe-line);border-radius:var(--ptfe-radius);padding:28px 24px;text-align:center;box-shadow:var(--ptfe-shadow);transition:all .25s;}
.ptfe-cert-card:hover{transform:translateY(-5px);box-shadow:var(--ptfe-shadow-lg);}
.ptfe-cert-name{display:inline-block;background:var(--ptfe-primary);color:#fff;font-family:var(--ptfe-font-head);font-weight:700;padding:8px 22px;border-radius:30px;margin-bottom:16px;font-size:.95rem;}
.ptfe-cert-card h3{font-size:1.05rem;margin-bottom:8px;}
.ptfe-cert-card p{font-size:.88rem;color:var(--ptfe-muted);}

/* ---------- Custom service ---------- */
.ptfe-process-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-bottom:44px;}
.ptfe-process-card{background:#fff;border:1px solid var(--ptfe-line);border-radius:var(--ptfe-radius);padding:28px 24px;position:relative;box-shadow:var(--ptfe-shadow);}
.ptfe-process-num{position:absolute;top:-14px;left:20px;background:var(--ptfe-accent);color:#fff;width:32px;height:32px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-family:var(--ptfe-font-head);font-weight:700;}
.ptfe-process-card h3{margin-bottom:8px;margin-top:6px;}
.ptfe-process-card p{font-size:.9rem;color:var(--ptfe-muted);}
.ptfe-custom-options{margin-bottom:44px;}
.ptfe-custom-cta{background:var(--ptfe-bg);border-radius:var(--ptfe-radius);padding:44px 36px;text-align:center;margin-top:44px;}
.ptfe-custom-cta .ptfe-inquiry-buttons{justify-content:center;}

/* ---------- Legal ---------- */
.ptfe-legal-wrap{max-width:880px;}
.ptfe-legal-content h2{font-size:1.4rem;margin-top:1.6em;}
.ptfe-legal-content ul,.ptfe-legal-content ol{margin-bottom:1em;}
.ptfe-legal-updated{color:var(--ptfe-muted);font-size:.88rem;}

/* ---------- 404 ---------- */
.ptfe-404{padding:90px 20px;text-align:center;}
.ptfe-404-box{max-width:640px;margin:0 auto;}
.ptfe-404-code{font-family:var(--ptfe-font-head);font-weight:800;font-size:6rem;color:var(--ptfe-bg-alt);line-height:1;display:block;}
.ptfe-404 h1{margin-bottom:10px;}
.ptfe-404-actions{display:flex;gap:14px;justify-content:center;margin:24px 0;flex-wrap:wrap;}
.ptfe-404-search{max-width:420px;margin:0 auto 24px;}
.ptfe-404 .ptfe-inquiry-buttons{justify-content:center;}
.ptfe-no-results{text-align:center;padding:50px 20px;}
.ptfe-no-results .search-form{max-width:420px;margin:20px auto;}

/* Search form */
.search-form{display:flex;gap:8px;}
.search-form .search-field{flex:1;padding:11px 14px;border:1px solid var(--ptfe-line);border-radius:var(--ptfe-radius-sm);font-size:.95rem;}
.search-form .search-field:focus{outline:none;border-color:var(--ptfe-primary);}
.search-form .search-submit{background:var(--ptfe-primary);color:#fff;border:none;padding:0 22px;border-radius:var(--ptfe-radius-sm);cursor:pointer;font-weight:600;}

/* ---------- Pagination ---------- */
.ptfe-pagination{margin:44px 0 10px;text-align:center;}
.ptfe-pagination .page-numbers{list-style:none;display:flex;gap:8px;justify-content:center;margin:0;}
.ptfe-pagination .page-numbers li{display:inline;}
.ptfe-pagination .page-numbers a,.ptfe-pagination .page-numbers span{display:inline-flex;min-width:40px;height:40px;align-items:center;justify-content:center;padding:0 12px;border:1px solid var(--ptfe-line);border-radius:var(--ptfe-radius-sm);color:var(--ptfe-text);font-weight:600;}
.ptfe-pagination .page-numbers a:hover{border-color:var(--ptfe-primary);color:var(--ptfe-primary);}
.ptfe-pagination .page-numbers .current{background:var(--ptfe-primary);color:#fff;border-color:var(--ptfe-primary);}

/* ---------- Responsive ---------- */
@media (max-width:1100px){
  .ptfe-footer-grid{grid-template-columns:1fr 1fr 1fr;}
  .ptfe-adv-grid{grid-template-columns:repeat(2,1fr);}
  .ptfe-cat-grid{grid-template-columns:repeat(2,1fr);}
  .ptfe-product-grid{grid-template-columns:repeat(2,1fr);}
  .ptfe-cert-grid,.ptfe-process-grid{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:920px){
  .ptfe-menu-toggle{display:block;}
  .ptfe-nav{position:relative;}
  .ptfe-menu{position:absolute;top:calc(100% + 8px);right:0;left:auto;min-width:240px;max-width:calc(100vw - 24px);background:#fff;border:1px solid var(--ptfe-line);border-radius:10px;box-shadow:var(--ptfe-shadow-lg);flex-direction:column;display:none;padding:8px;max-height:70vh;overflow-y:auto;-webkit-overflow-scrolling:touch;z-index:950;}
  .ptfe-menu.is-open{display:flex;}
  .ptfe-menu .menu-item{border-bottom:1px solid var(--ptfe-bg);}
  .ptfe-menu .menu-item:last-child{border-bottom:none;}
  .ptfe-menu a{padding:11px 14px;font-size:.95rem;display:block;}
  .ptfe-menu .sub-menu{position:static;opacity:1;visibility:visible;transform:none;box-shadow:none;border:none;border-left:2px solid var(--ptfe-bg-alt);margin-left:12px;min-width:0;}
  .ptfe-header-phone{display:none;}
  .ptfe-layout,.ptfe-product-layout{grid-template-columns:1fr;}
  .ptfe-product-sidebar{position:static;}
  .ptfe-product-sidebar .ptfe-sidebar-help{display:none;}
  .ptfe-product-sidebar .ptfe-sidebar-widget{padding:14px;margin:0;}
  .ptfe-product-sidebar .ptfe-cat-list{display:flex;flex-wrap:nowrap;overflow-x:auto;gap:8px;padding-bottom:6px;-webkit-overflow-scrolling:touch;}
  .ptfe-product-sidebar .ptfe-cat-list li{white-space:nowrap;border:1px solid var(--ptfe-line);border-radius:20px;padding:6px 14px;background:#fff;}
  .ptfe-product-sidebar .ptfe-cat-list li.is-active{background:var(--ptfe-primary);}
  .ptfe-product-sidebar .ptfe-cat-list li.is-active a{color:#fff;}
  .ptfe-contact-wrap{grid-template-columns:1fr;}
  .ptfe-hero-slides{min-height:440px;}
  .ptfe-hero-title{font-size:2rem;}
  .ptfe-stats-grid{grid-template-columns:repeat(2,1fr);}
  .ptfe-about-snippet-grid{grid-template-columns:1fr;}
  .ptfe-industry-grid{grid-template-columns:repeat(2,1fr);}
  .ptfe-case-grid{grid-template-columns:1fr;}
  .ptfe-post-grid{grid-template-columns:repeat(2,1fr);}
  .ptfe-form-row{flex-direction:column;gap:14px;}
  .ptfe-pd-apps{columns:1;}
}
@media (max-width:600px){
  .ptfe-industry-grid,.ptfe-product-grid,.ptfe-post-grid,.ptfe-cert-grid,.ptfe-process-grid,.ptfe-adv-grid{grid-template-columns:1fr;}
  .ptfe-cat-grid{grid-template-columns:1fr;}
  .ptfe-footer-grid{grid-template-columns:1fr;}
  .ptfe-hero-title{font-size:1.6rem;}
  .ptfe-topbar-inner{justify-content:center;text-align:center;}
  .ptfe-header-inner{min-height:64px;}
  .ptfe-brand-name{font-size:1.15rem;}
  /* Product page mobile anti-overflow */
  .ptfe-product-layout{padding:24px 14px;gap:18px;}
  .ptfe-product-sidebar{margin:0;}
  .ptfe-product-sidebar .ptfe-sidebar-widget{box-shadow:none;border-radius:8px;padding:12px;}
  .ptfe-product-card-body{padding:14px;}
  .ptfe-pd-grid{gap:20px;}
  .ptfe-pd-spec-table{font-size:.85rem;}
  .ptfe-container{padding-left:14px;padding-right:14px;}
}
/* Product list — mobile: one product per row; image adapts to screen width/height, never stretched or cropped */
@media (max-width:767px){
  .ptfe-product-grid{grid-template-columns:1fr;gap:16px;}
  .ptfe-product-card-media{aspect-ratio:auto;height:auto;min-height:0;padding:12px;display:block;overflow:hidden;}
  .ptfe-product-card-media img{width:100%;height:auto;max-height:none;object-fit:contain;display:block;margin:0 auto;}
}

/* ============================================================
   Premium corporate polish — TOP PTFE
   ============================================================ */
/* Global reach band */
.ptfe-reach{background:var(--ptfe-dark);border-top:1px solid rgba(255,255,255,.08);border-bottom:1px solid rgba(255,255,255,.08);}
.ptfe-reach-inner{display:flex;flex-wrap:wrap;align-items:center;gap:14px 22px;padding:26px 20px;}
.ptfe-reach-label{font-family:var(--ptfe-font-head);font-weight:700;color:#fff;font-size:.92rem;letter-spacing:.4px;text-transform:uppercase;margin-right:6px;}
.ptfe-reach-list{list-style:none;display:flex;flex-wrap:wrap;gap:10px;margin:0;}
.ptfe-reach-list li{color:#b9c9e2;font-size:.9rem;border:1px solid rgba(255,255,255,.14);border-radius:30px;padding:5px 15px;background:rgba(255,255,255,.04);transition:all .2s;}
.ptfe-reach-list li:hover{color:#fff;border-color:var(--ptfe-accent);}

/* Certification strip */
.ptfe-certstrip{background:var(--ptfe-bg-alt);}
.ptfe-certstrip-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:12px 26px;padding:20px;}
.ptfe-certstrip-item{font-family:var(--ptfe-font-head);font-weight:600;font-size:.85rem;letter-spacing:1px;color:var(--ptfe-primary);background:#fff;border:1px solid var(--ptfe-line);border-radius:6px;padding:8px 18px;box-shadow:var(--ptfe-shadow);}
.ptfe-certstrip-link{font-weight:600;font-size:.9rem;color:var(--ptfe-accent);}

/* Premium hero refinements */
.ptfe-hero-slide{will-change:opacity;}
.ptfe-hero-title{letter-spacing:-.5px;line-height:1.15;}
.ptfe-hero-eyebrow{box-shadow:0 4px 14px rgba(245,130,31,.35);}
.ptfe-hero-sub{text-shadow:0 1px 8px rgba(0,0,0,.25);}
.ptfe-hero-slide::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(4,31,66,0) 55%,rgba(4,31,66,.55) 100%);pointer-events:none;}
.ptfe-hero-content{z-index:3;}
.ptfe-hero-dots{bottom:30px;}

/* Section polish */
.ptfe-section{padding:84px 0;}
.ptfe-eyebrow{display:inline-block;color:var(--ptfe-accent);font-weight:700;font-size:.78rem;letter-spacing:2px;text-transform:uppercase;margin-bottom:10px;}
.ptfe-section-head h2{font-size:2.2rem;margin-bottom:12px;}
.ptfe-section-head p{color:var(--ptfe-muted);font-size:1.05rem;}

/* Buttons premium */
.ptfe-btn-primary{box-shadow:0 6px 18px rgba(10,77,163,.28);}
.ptfe-btn-accent{box-shadow:0 6px 18px rgba(245,130,31,.3);}
.ptfe-btn-primary:hover,.ptfe-btn-accent:hover{transform:translateY(-3px);box-shadow:0 10px 26px rgba(10,77,163,.34);}

/* About snippet */
.ptfe-about-snippet-media{position:relative;}
.ptfe-about-snippet-media::before{content:"";position:absolute;top:-14px;left:-14px;right:auto;bottom:auto;width:120px;height:120px;border:3px solid var(--ptfe-accent);border-radius:var(--ptfe-radius);z-index:-1;opacity:.6;}
.ptfe-about-snippet-media img{border-radius:var(--ptfe-radius);box-shadow:var(--ptfe-shadow-lg);}

/* CTA band premium */
.ptfe-cta-band{background:linear-gradient(110deg,var(--ptfe-primary-darker) 0%,var(--ptfe-primary) 60%,#0d6fd8 100%);position:relative;overflow:hidden;}
.ptfe-cta-band::before{content:"";position:absolute;right:-120px;top:-120px;width:360px;height:360px;border-radius:50%;background:radial-gradient(circle,rgba(255,255,255,.14),transparent 70%);}
.ptfe-cta-band::after{content:"";position:absolute;left:-80px;bottom:-140px;width:300px;height:300px;border-radius:50%;background:radial-gradient(circle,rgba(245,130,31,.22),transparent 70%);}
.ptfe-cta-inner{position:relative;z-index:2;}
.ptfe-cta-band .ptfe-cta-text h2{color:#fff;font-size:2rem;margin-bottom:8px;}
.ptfe-cta-band .ptfe-cta-text p{color:#dbe6f5;}

/* Stats band premium */
.ptfe-stats{background:linear-gradient(110deg,var(--ptfe-primary-darker),var(--ptfe-primary));}
.ptfe-stat-num{font-size:2.8rem;letter-spacing:-.5px;}

/* Cards hover premium */
.ptfe-cat-card,.ptfe-industry-card,.ptfe-adv-card,.ptfe-case-card,.ptfe-product-card{transition:transform .28s ease,box-shadow .28s ease,border-color .28s ease;}
.ptfe-cat-card:hover,.ptfe-industry-card:hover,.ptfe-adv-card:hover,.ptfe-case-card:hover,.ptfe-product-card:hover{transform:translateY(-6px);box-shadow:var(--ptfe-shadow-lg);}

/* ============================================================
   Blog premium polish
   ============================================================ */
.ptfe-post-card{position:relative;}
.ptfe-post-card::after{content:"";position:absolute;left:0;bottom:0;width:0;height:3px;background:linear-gradient(90deg,var(--ptfe-primary),var(--ptfe-accent));transition:width .35s ease;}
.ptfe-post-card:hover::after{width:100%;}
.ptfe-post-card-cat{background:linear-gradient(120deg,var(--ptfe-primary),var(--ptfe-primary-dark));color:#fff;}
.ptfe-post-card-title{font-size:1.08rem;line-height:1.4;}
.ptfe-post-card-title a{transition:color .2s;}
.ptfe-post-card-title a:hover{color:var(--ptfe-primary);}
.ptfe-post-card-excerpt{line-height:1.6;}
.ptfe-post-card-meta time{text-transform:uppercase;letter-spacing:.6px;font-size:.72rem;}
.ptfe-post-card .ptfe-link-more{display:inline-flex;align-items:center;gap:4px;}
.ptfe-post-card .ptfe-link-more:hover{gap:8px;}

/* Article */
.ptfe-article{background:#fff;border:1px solid var(--ptfe-line);border-radius:var(--ptfe-radius);padding:34px;box-shadow:var(--ptfe-shadow);max-width:100%;overflow:hidden;}
/* Industries page grid */
.ptfe-industries-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;padding:50px 0 60px;}
.ptfe-industry-card{background:#fff;border:1px solid var(--ptfe-line);border-radius:var(--ptfe-radius);padding:32px 28px;box-shadow:var(--ptfe-shadow);transition:transform .2s,box-shadow .2s;}
.ptfe-industry-card:hover{transform:translateY(-3px);box-shadow:var(--ptfe-shadow-lg);}
.ptfe-industry-icon{width:56px;height:56px;border-radius:12px;background:var(--ptfe-bg-alt);color:var(--ptfe-primary);display:flex;align-items:center;justify-content:center;margin-bottom:18px;}
.ptfe-industry-name{font-size:1.25rem;margin-bottom:10px;}
.ptfe-industry-desc{color:var(--ptfe-muted);font-size:.95rem;line-height:1.7;margin-bottom:14px;}
.ptfe-industry-link{font-weight:600;color:var(--ptfe-primary);font-size:.9rem;}
@media (max-width:900px){.ptfe-industries-grid{grid-template-columns:repeat(2,1fr);}}
@media (max-width:600px){.ptfe-industries-grid{grid-template-columns:1fr;}}
/* Related products — 2 rows x 3 columns */
.ptfe-related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:22px;}
@media (max-width:900px){.ptfe-related-grid{grid-template-columns:repeat(2,1fr);}}
@media (max-width:600px){.ptfe-related-grid{grid-template-columns:1fr;}}
.ptfe-article-header{border-bottom:1px solid var(--ptfe-line);padding-bottom:20px;margin-bottom:24px;}
.ptfe-article-title{font-size:2.1rem;line-height:1.25;}
.ptfe-post-meta{display:flex;align-items:center;gap:12px;font-size:.82rem;color:var(--ptfe-muted);margin-bottom:10px;flex-wrap:wrap;}
.ptfe-post-cat{background:var(--ptfe-bg-alt);color:var(--ptfe-primary);padding:3px 12px;border-radius:20px;font-weight:600;}
.ptfe-article-content{font-size:1.02rem;line-height:1.85;overflow-wrap:break-word;word-wrap:break-word;}
.ptfe-article-content h2{font-size:1.5rem;margin-top:1.6em;}
.ptfe-article-content img{max-width:100%;height:auto;display:block;}
.ptfe-article-content table{display:block;width:100%;overflow-x:auto;}
.ptfe-article-content pre{background:#f4f7fb;padding:14px 16px;border-radius:8px;overflow-x:auto;font-size:.9rem;}
.ptfe-article-footer{margin-top:28px;padding-top:20px;border-top:1px solid var(--ptfe-line);}
.ptfe-tags a{display:inline-block;background:var(--ptfe-bg);color:var(--ptfe-primary);font-size:.82rem;padding:4px 12px;border-radius:20px;margin:0 6px 6px 0;}
.ptfe-post-nav{display:flex;justify-content:space-between;gap:16px;margin-top:18px;}
.ptfe-post-nav a{flex:1;background:var(--ptfe-bg);border-radius:var(--ptfe-radius-sm);padding:14px 18px;font-weight:600;font-size:.92rem;color:var(--ptfe-dark);}
.ptfe-post-nav a:hover{background:var(--ptfe-bg-alt);color:var(--ptfe-primary);}
.ptfe-post-nav-next{text-align:right;}

/* Post inquiry band (news detail) */
.ptfe-post-inquiry{background:var(--ptfe-bg);border-top:1px solid var(--ptfe-line);border-bottom:1px solid var(--ptfe-line);}
.ptfe-post-inquiry-inner{text-align:center;padding:44px 20px;}
.ptfe-post-inquiry h2{font-size:1.5rem;margin-bottom:20px;}

/* Blog page hero */
.ptfe-page-hero{position:relative;overflow:hidden;}
.ptfe-page-hero::before{content:"";position:absolute;right:-80px;top:-80px;width:280px;height:280px;border-radius:50%;background:radial-gradient(circle,rgba(245,130,31,.28),transparent 70%);}
.ptfe-page-hero .ptfe-container{position:relative;z-index:2;}
.ptfe-page-hero-title{letter-spacing:-.3px;}

/* ============================================================
   Blog list — full-width archive + narrow grid variants
   ============================================================ */
.ptfe-blog-archive{padding:52px 20px 20px;}
.ptfe-primary-wide{width:100%;}
.ptfe-blog-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;}
.ptfe-post-grid-narrow{grid-template-columns:repeat(2,1fr);gap:22px;}
.ptfe-blog-hero{padding-bottom:44px;}
.ptfe-blog-hero .ptfe-page-hero-title{font-size:2.4rem;}

/* Broken image fallback */
.ptfe-post-card-media.is-broken,.ptfe-product-card-media.is-broken{background:linear-gradient(135deg,var(--ptfe-bg),var(--ptfe-bg-alt));}
.ptfe-post-card-media.is-broken::after,.ptfe-product-card-media.is-broken::after,.ptfe-article-thumb.is-broken::after{content:"";display:block;width:100%;height:100%;min-height:150px;}
.ptfe-post-card-media .ptfe-noimg,.ptfe-product-card-media .ptfe-noimg{width:100%;height:100%;min-height:190px;}

/* ============================================================
   Blog detail — On This Page sticky TOC (right, flex layout)
   ============================================================ */
.ptfe-layout-post{display:flex;flex-wrap:nowrap;gap:40px;align-items:flex-start;}
.ptfe-layout-post .ptfe-primary{flex:1 1 0;min-width:0;order:1;}
.ptfe-layout-post .ptfe-post-toc{flex:0 0 240px;min-width:0;order:2;}
.ptfe-post-toc{min-width:0;}
/* Sticky header only on single blog post, not on generic pages */
.single .ptfe-article-header{position:sticky;top:116px;background:#fff;z-index:750;margin:-34px -34px 24px;padding:30px 34px 18px;box-shadow:0 6px 18px -12px rgba(11,31,58,.25);border-bottom:1px solid var(--ptfe-line);}
.ptfe-post-toc-inner{position:sticky;top:110px;background:#fff;border:1px solid var(--ptfe-line);border-radius:var(--ptfe-radius);padding:20px 18px;box-shadow:var(--ptfe-shadow);max-height:calc(100vh - 140px);overflow:auto;}
.ptfe-post-toc-title{font-family:var(--ptfe-font-head);font-weight:700;color:var(--ptfe-dark);font-size:.95rem;text-transform:uppercase;letter-spacing:1px;margin-bottom:14px;padding-bottom:10px;border-bottom:2px solid var(--ptfe-bg-alt);}
.ptfe-post-toc-list{list-style:none;margin:0;}
.ptfe-post-toc-list li{margin:0;}
.ptfe-toc-link{display:block;padding:7px 10px;font-size:.88rem;color:var(--ptfe-muted);border-left:3px solid transparent;border-radius:4px;line-height:1.4;}
.ptfe-toc-link:hover{color:var(--ptfe-primary);background:var(--ptfe-bg);}
.ptfe-toc-link.is-active{color:var(--ptfe-primary);font-weight:600;border-left-color:var(--ptfe-accent);background:var(--ptfe-bg);}

/* Anchor offset under sticky header */
#ptfe-article-content h2{scroll-margin-top:120px;}

/* Article byline & read time */
.ptfe-article-byline{color:var(--ptfe-muted);font-size:.92rem;margin-top:-2px;}
.ptfe-article-byline a{font-weight:600;}
.ptfe-post-readtime{color:var(--ptfe-muted);}

/* E-E-A-T author box */
.ptfe-post-author{background:var(--ptfe-bg);border:1px solid var(--ptfe-line);border-radius:var(--ptfe-radius);padding:30px;margin-top:34px;}
.ptfe-post-author-body h2{font-size:1.35rem;margin-bottom:10px;}
.ptfe-post-author-body p{color:var(--ptfe-muted);font-size:.95rem;}
.ptfe-post-author-links{display:flex;flex-wrap:wrap;gap:18px;margin:14px 0 20px;}
.ptfe-post-author-links a{font-weight:600;font-size:.9rem;color:var(--ptfe-primary);}
.ptfe-post-author-links a:hover{color:var(--ptfe-accent);}
.ptfe-post-author .ptfe-inquiry-buttons{margin-top:8px;}

/* Post FAQ section */
.ptfe-post-faq{margin-top:34px;}
.ptfe-post-faq-title{font-size:1.5rem;margin-bottom:18px;}

/* Responsive */
@media (max-width:1100px){
  .ptfe-layout-post{flex-direction:column;}
  .ptfe-post-toc{display:none;}
}
@media (max-width:920px){
  .ptfe-blog-grid{grid-template-columns:repeat(2,1fr);}
  .ptfe-home-products-list,.ptfe-cat-grid{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:600px){
  .ptfe-blog-grid,.ptfe-post-grid-narrow,.ptfe-home-products-list,.ptfe-cat-grid{grid-template-columns:1fr;}
  .ptfe-article{padding:24px 18px;}
  .ptfe-article-header{position:static;margin:0 0 18px;padding:0 0 14px;box-shadow:none;}
}

/* ============================================================
   Product detail — SKU, supply facts, manufacturer block
   ============================================================ */
.ptfe-pd-meta-row{display:flex;flex-wrap:wrap;gap:8px 22px;align-items:center;padding:0 0 14px;border-bottom:1px solid var(--ptfe-line);margin-bottom:22px;}
.ptfe-pd-sku{font-family:var(--ptfe-font-head);font-size:.8rem;font-weight:700;letter-spacing:.6px;color:var(--ptfe-muted);text-transform:uppercase;background:var(--ptfe-bg);border:1px solid var(--ptfe-line);padding:4px 12px;border-radius:20px;}

.ptfe-pd-supply{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-bottom:34px;}
.ptfe-pd-supply-item{background:var(--ptfe-bg);border:1px solid var(--ptfe-line);border-radius:var(--ptfe-radius);padding:16px 18px;}
.ptfe-pd-supply-label{display:block;font-family:var(--ptfe-font-head);font-weight:700;font-size:.8rem;text-transform:uppercase;letter-spacing:.8px;color:var(--ptfe-primary);margin-bottom:6px;}
.ptfe-pd-supply-value{display:block;font-size:.9rem;color:var(--ptfe-dark);line-height:1.5;}

.ptfe-pd-manufacturer{background:var(--ptfe-bg);border:1px solid var(--ptfe-line);border-radius:var(--ptfe-radius);padding:32px;}
.ptfe-pd-manufacturer-inner{display:grid;grid-template-columns:1.6fr 1fr;gap:34px;align-items:center;}
.ptfe-pd-manufacturer-body h2{font-size:1.4rem;margin:6px 0 12px;}
.ptfe-pd-manufacturer-body p{color:var(--ptfe-muted);font-size:.95rem;line-height:1.7;}
.ptfe-pd-manufacturer-links{display:flex;flex-wrap:wrap;gap:18px;margin-top:14px;}
.ptfe-pd-manufacturer-links a{font-weight:600;font-size:.9rem;color:var(--ptfe-primary);}
.ptfe-pd-manufacturer-links a:hover{color:var(--ptfe-accent);}

@media (max-width:920px){
  .ptfe-pd-supply{grid-template-columns:repeat(2,1fr);}
  .ptfe-pd-manufacturer-inner{grid-template-columns:1fr;}
}
@media (max-width:600px){
  .ptfe-pd-supply{grid-template-columns:1fr;}
}
.ptfe-product-card-sku{display:inline-block;font-family:var(--ptfe-font-head);font-size:.7rem;font-weight:700;letter-spacing:.5px;color:var(--ptfe-muted);text-transform:uppercase;background:var(--ptfe-bg);border:1px solid var(--ptfe-line);padding:2px 10px;border-radius:20px;margin-bottom:8px;}