:root{--bg:#fafaf8;--surface:#fff;--ink:#1c2733;--muted:#5c6b7a;--line:#e3e7eb;--primary:#1e4e8c;--primary-hover:#17406f;--accent:#e8762c;--accent-soft:#fdf0e5;--success:#2e7d4f;--img-bg:#f4f5f4;--radius:6px;--container:1200px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font-family:Inter,-apple-system,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;font-size:16px;line-height:1.6}h1,h2,h3{line-height:1.25}h1{font-size:clamp(28px,4vw,44px);margin:0 0 12px}h2{font-size:clamp(22px,3vw,32px);margin:0 0 10px}h3{font-size:20px;margin:0 0 8px}p{margin:0 0 12px}a{color:var(--primary);text-decoration:none}a:hover{text-decoration:underline}.mono,code{font-family:ui-monospace,JetBrains Mono,Consolas,monospace}.container{max-width:var(--container);margin:0 auto;padding:0 24px}.section{padding:64px 0}.section-tight{padding:40px 0}.eyebrow{text-transform:uppercase;letter-spacing:.08em;font-size:13px;margin:0 0 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var(--line);border-radius:999px;background:var(--surface);color:var(--ink);font-size:13.5px;font-weight:500;font-family:inherit}.cf-chip:hover{color:var(--primary)}.cf-chip.on,.cf-chip:hover{border-color:var(--primary)}.cf-chip.on{background:var(--primary);color:#fff}.cf-clear{cursor:pointer;border:none;background:none;color:var(--muted);font-size:13px;text-decoration:underline;font-family:inherit}.cf-clear:hover{color:var(--primary)}.cf-empty{margin-top:20px;color:var(--muted)}[id]{scroll-margin-top:80px}.mobile-group{display:flex;flex-direction:column;gap:4px;width:100%}.mobile-subs{display:flex;flex-wrap:wrap;gap:12px;padding-left:2px}.grid{display:grid;grid-gap:24px;gap:24px}.grid-4{grid-template-columns:repeat(4,1fr)}.grid-3{grid-template-columns:repeat(3,1fr)}.grid-2{grid-template-columns:repeat(2,1fr)}@media (max-width:960px){.grid-3,.grid-4{grid-template-columns:repeat(2,1fr)}}@media 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(max-width:640px){.form-row{grid-template-columns:1fr}}label{font-weight:600;font-size:14px;display:block;margin-bottom:4px}input[type=email],input[type=text],select,textarea{width:100%;padding:10px 12px;border:1px solid var(--line);border-radius:var(--radius);font:inherit;background:var(--surface);color:var(--ink)}input:focus,textarea:focus{outline:2px solid var(--primary);border-color:var(--primary)}.hp-field{position:absolute;left:-9999px;opacity:0;height:0;width:0}.form-status{padding:12px 16px;border-radius:var(--radius);font-size:15px}.form-status.ok{background:#e7f4ec;color:var(--success);border:1px solid #bfe3cd}.form-status.err{background:#fdecec;color:#a33;border:1px solid #f3c1c1}.img-placeholder{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;background:var(--img-bg);border:1.5px dashed #c8d0d8;border-radius:var(--radius);color:var(--muted);font-size:13.5px;text-align:center;padding:16px;min-height:140px}.img-placeholder 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(max-width:640px){.contact-rail{top:auto;bottom:16px;transform:none}.rail-btn{width:42px;height:42px}.rail-tip{display:none}}.lang-drop{position:relative;margin-left:6px}.lang-btn{display:inline-flex;align-items:center;gap:6px;font:inherit;font-size:13.5px;font-weight:600;color:var(--ink);background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:7px 11px;cursor:pointer}.lang-btn:hover{border-color:var(--primary);color:var(--primary)}.lang-btn .caret{transition:transform .15s}.lang-btn .caret.up{transform:rotate(180deg)}.lang-menu{position:absolute;right:0;top:calc(100% + 6px);background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:0 6px 18px rgba(28,39,51,.12);min-width:150px;z-index:100;padding:4px}.lang-item{display:block;padding:8px 12px;font-size:14px;color:var(--ink);border-radius:4px}.lang-item:hover{background:var(--img-bg);text-decoration:none}.lang-item.on{color:var(--primary);font-weight:700}.chat-widget{position:fixed;right:14px;bottom:16px;z-index:95;display:flex;flex-direction:column;align-items:flex-end;gap:10px}.chat-fab{width:54px;height:54px;border-radius:50%;border:none;background:var(--primary);color:#fff;cursor:pointer;display:flex;align-items:center;justify-content:center;box-shadow:0 4px 14px rgba(30,78,140,.35)}.chat-fab:hover{background:var(--primary-hover)}.chat-panel{width:300px;background:var(--surface);border:1px solid var(--line);border-radius:10px;box-shadow:0 10px 30px rgba(28,39,51,.18);overflow:hidden}.chat-head{background:var(--primary);color:#fff;padding:14px 16px}.chat-head .small{color:#cfdcea}.chat-row{display:flex;gap:12px;align-items:center;padding:11px 16px;border-top:1px solid var(--line);color:var(--ink)}a.chat-row:hover{background:var(--img-bg);text-decoration:none}.chat-ic{width:34px;height:34px;border-radius:50%;display:flex;align-items:center;justify-content:center;color:#fff;flex-shrink:0;font-size:11px;font-weight:800}.chat-ic-wa{background:#25d366}.chat-ic-wc{background:#1e4e8c}.chat-ic-em{background:var(--accent)}.chat-ic-rfq{background:var(--ink)}@media (max-width:640px){.contact-rail{display:none}}[dir=rtl] .main-nav{margin-left:0;margin-right:auto}[dir=rtl] .nav-caret{margin-left:0;margin-right:5px}[dir=rtl] .dropdown.dd-products{left:auto;right:0}[dir=rtl] .dd-cats{left:auto;right:100%}[dir=rtl] .dd-arrow{transform:scaleX(-1)}[dir=rtl] .mobile-subs{padding-left:0;padding-right:2px}[dir=rtl] .attr-chip{margin:2px 0 2px 4px}[dir=rtl] .article-body td,[dir=rtl] .article-body th,[dir=rtl] .fact-card,[dir=rtl] .spec-table td,[dir=rtl] .spec-table th{text-align:right}[dir=rtl] .article-body blockquote{border-left:0;border-right:3px solid var(--accent);border-radius:var(--radius) 0 0 var(--radius)}[dir=rtl] .contact-rail{right:auto;left:14px}[dir=rtl] .rail-tip{right:auto;left:56px}[dir=rtl] .lang-drop{margin-left:0;margin-right:6px}[dir=rtl] .lang-menu{right:auto;left:0}[dir=rtl] .chat-widget{right:auto;left:14px;align-items:flex-start}