:root {
  --bg: #F7F4EC;
  --bg-2: #E9E3D3;
  --bg-3: #d9d3c5;
  --line: #c4bfb3;
  --line-2: #a8a394;
  --ink: #0F172A;
  --ink-2: #334155;
  --muted: #475569;
  --text: #475569;
  --accent: #0369A1;
  --accent-2: #b08947;
  --tech: #4a6a52;
}
* { box-sizing: border-box; }
html { scroll-padding-top: 132px; scroll-behavior: smooth; }
@media (max-width: 900px) { html { scroll-padding-top: 112px; } }
body { margin: 0; font-family: 'Inter','Noto Sans SC',sans-serif; background: var(--bg); color: var(--text); line-height: 1.6; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* Topbar */
.topbar { position: sticky; top: 0; z-index: 51; background: var(--ink); color: rgba(247,244,236,.8); font-size: 14px; }
.topbar-inner { max-width: 1200px; margin: 0 auto; padding: 0 20px; height: 40px; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.topbar .tb-left { display: flex; gap: 20px; align-items: center; }
.topbar .tb-item { display: inline-flex; align-items: center; gap: 8px; }
.topbar .tb-item svg { width: 16px; height: 16px; }
.topbar a { color: rgba(247,244,236,.8); transition: color .15s; }
.topbar a:hover { color: var(--accent-2); }
.topbar .tel-num { color: var(--bg); font-weight: 600; }
.topbar .tb-right { display: flex; align-items: center; gap: 16px; margin-left: auto; }
.topbar .lang-label { color: rgba(247,244,236,.6); }
.topbar .lang-toggle { display: inline-flex; align-items: center; gap: 8px; background: transparent; border: 0; padding: 0; }
.topbar .lang-toggle button { background: transparent; border: 0; padding: 0; color: rgba(247,244,236,.7); font: inherit; font-weight: 600; cursor: pointer; text-decoration: none; }
.topbar .lang-toggle button:hover { color: var(--bg); }
.topbar .lang-toggle button.active { color: var(--bg); text-decoration: underline; text-decoration-color: var(--accent-2); text-underline-offset: 4px; text-decoration-thickness: 2px; }
.topbar .lang-sep { color: rgba(247,244,236,.3); }

/* Header */
header { position: sticky; top: 40px; z-index: 50; background: rgba(247,244,236,.92); backdrop-filter: blur(12px); }
.h-inner { max-width: 1200px; margin: 0 auto; padding: 0 20px; height: 92px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: flex; align-items: center; gap: 12px; }
.brand-mark { width: 52px; height: 52px; border-radius: 8px; overflow: hidden; flex-shrink: 0; }
.brand-mark img { width: 100%; height: 100%; object-fit: cover; display: block; }
.b-text { display: flex; flex-direction: column; line-height: 1.3; }
.b-cn { display: block; font-size: 19px; font-weight: 700; color: var(--accent); text-align: justify; text-align-last: justify; }
.b-en { display: block; font-size: 11px; font-weight: 500; color: var(--muted); letter-spacing: 0.5px; margin-top: 4px; text-align: justify; text-align-last: justify; }
nav.primary { display: flex; align-items: center; gap: 28px; font-size: 15px; color: var(--ink-2); }
nav.primary a { font-family: 'Inter','Noto Sans SC',sans-serif; font-weight: 400; transition: color .15s; }
nav.primary a:hover, nav.primary a.active { color: var(--ink); }
.nav-dropdown { position: relative; }
.dropdown-trigger { display: inline-flex !important; align-items: center; gap: 4px; cursor: pointer; }
.dropdown-trigger svg { transition: transform .2s; }
.nav-dropdown:hover .dropdown-trigger svg { transform: rotate(180deg); }
.dropdown-menu { position: absolute; top: 100%; left: -16px; min-width: 230px; background: var(--bg); border: 1px solid var(--line); box-shadow: 0 8px 24px rgba(15,23,42,.08); padding: 8px 0; opacity: 0; visibility: hidden; transform: translateY(-4px); transition: opacity .2s, transform .2s, visibility .2s; z-index: 100; }
.nav-dropdown::before { content:''; position: absolute; top: 100%; left:0; right:0; height: 12px; }
.nav-dropdown:hover .dropdown-menu { opacity: 1; visibility: visible; transform: translateY(8px); }
.dropdown-menu a { display: block !important; padding: 10px 18px !important; color: var(--ink-2) !important; font-size: 14px; font-weight: 500; border: 0 !important; transition: background .15s, color .15s; }
.dropdown-menu a.active { color: var(--accent) !important; background: var(--bg-2); }
.dropdown-menu a:hover { background: var(--bg-2); color: var(--accent) !important; }
.h-cta { display: inline-flex; align-items: center; gap: 8px; background: var(--accent); color: #fff; padding: 10px 16px; font-size: 14px; font-weight: 600; border: 0; border-radius: 6px; transition: background-color .2s; }
.h-cta:hover { background: #075985; }
.h-cta svg { width: 16px; height: 16px; }
.h-actions { display: flex; align-items: center; gap: 8px; }
.menu-btn { display: none; padding: 8px; background: transparent; border: 0; border-radius: 6px; color: var(--ink); cursor: pointer; transition: background-color .15s; }
.menu-btn:hover { background: var(--bg-2); }
.menu-btn svg { width: 24px; height: 24px; }
#mobile-menu { display: none; border-top: 1px solid var(--line); background: var(--bg); }
#mobile-menu.open { display: block; }
#mobile-menu .mm-inner { max-width: 1200px; margin: 0 auto; padding: 12px 20px; display: grid; gap: 4px; }
#mobile-menu a { padding: 10px 12px; border-radius: 4px; color: var(--ink-2); font-size: 15px; transition: background-color .15s; }
#mobile-menu a:hover { background: var(--bg-2); }
#mobile-menu a.mm-sub { padding-left: 28px; font-size: 13px; color: var(--muted); }
#mobile-menu a.mm-wa { display: flex !important; align-items: center; gap: 8px; color: #25D366 !important; font-weight: 600; border-top: 1px solid var(--line); margin-top: 4px; padding-top: 14px; }
.tb-wa { display: inline-flex; align-items: center; gap: 6px; color: #25D366 !important; font-weight: 600; font-size: 13px; }
.tb-wa:hover { opacity: .8; }
.tb-wa svg { width: 15px; height: 15px; }
@media (max-width: 1023px) { nav.primary { display: none; } .menu-btn { display: inline-flex; } }
@media (max-width: 900px) { .h-inner { height: 72px; } .b-cn { font-size: 16px; text-align: left; text-align-last: left; } .b-en { font-size: 9px; text-align: left; text-align-last: left; } }
@media (max-width: 640px) { .h-cta { display: none; } }
@media (max-width: 639px) { .topbar .tb-left { display: none; } .topbar .tb-right { margin-left: 0; } }

/* Breadcrumb */
.breadcrumb { display: flex; align-items: center; gap: 8px; padding: 36px 0 0; font-size: 13px; color: var(--muted); flex-wrap: wrap; }
.breadcrumb a { transition: color .15s; }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb .sep { color: var(--line-2); }

/* Product hero */
.pp-hero { padding: 40px 0 80px; }
.pp-hero-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
@media (max-width: 900px) { .pp-hero-grid { grid-template-columns: 1fr; gap: 32px; } }
.pp-image { aspect-ratio: 1/1; background: #fff; border: 1px solid var(--line); padding: 24px; display: grid; place-items: center; overflow: hidden; }
.pp-image img { width: 100%; height: 100%; object-fit: contain; }
.pp-image svg { width: 60%; height: 60%; color: var(--tech); opacity: .55; }
.pp-info .eyebrow { display: inline-flex; align-items: center; gap: 10px; font-size: 14px; font-weight: 700; color: var(--ink); margin-bottom: 18px; }
.pp-info h1 { font-family: 'Inter','Noto Sans SC',sans-serif; font-size: clamp(32px, 4vw, 48px); font-weight: 800; line-height: 1.15; letter-spacing: -1px; color: var(--ink); margin: 0 0 20px; }
.pp-lead { font-size: 17px; line-height: 1.75; color: var(--ink-2); margin: 0 0 28px; max-width: 540px; }
.pp-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 32px; }
.pp-tag { font-family: 'JetBrains Mono', monospace; font-size: 11px; padding: 5px 12px; background: var(--bg-2); border: 1px solid var(--line); color: var(--ink); letter-spacing: 0.5px; }
.pp-cta-row { display: flex; gap: 14px; flex-wrap: wrap; align-items: center; }
.pp-btn-primary { display: inline-flex; align-items: center; gap: 8px; padding: 14px 26px; background: var(--accent); color: #fff; font-family: 'JetBrains Mono', monospace; font-size: 13px; font-weight: 600; letter-spacing: 2px; text-transform: uppercase; border: 0; cursor: pointer; transition: background .2s; }
.pp-btn-primary:hover { background: var(--ink); }
.pp-btn-secondary { display: inline-flex; align-items: center; gap: 8px; padding: 14px 26px; background: transparent; color: var(--ink); border: 1px solid var(--line-2); font-family: 'JetBrains Mono', monospace; font-size: 13px; font-weight: 600; letter-spacing: 2px; text-transform: uppercase; }
.pp-btn-secondary:hover { border-color: var(--accent); color: var(--accent); }

/* Sections */
section.pp-section { padding: 80px 0; }
section.pp-section.alt { background: var(--bg-2); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.pp-sec-head { margin-bottom: 44px; max-width: 700px; }
.pp-sec-head .eyebrow { display: inline-flex; align-items: center; gap: 10px; font-size: 14px; font-weight: 700; color: var(--ink); margin-bottom: 14px; }
.pp-sec-h { font-size: clamp(28px, 3vw, 38px); font-weight: 800; letter-spacing: -0.5px; line-height: 1.2; color: var(--ink); margin: 0 0 14px; }
.pp-sec-p { color: var(--muted); font-size: 16px; margin: 0; line-height: 1.7; }

/* Specs grid */
.specs-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
@media (max-width: 700px) { .specs-grid { grid-template-columns: 1fr 1fr; } }
.spec-cell { background: var(--bg); padding: 26px; }
.spec-cell .k { font-family: 'JetBrains Mono', monospace; font-size: 11px; color: var(--muted); letter-spacing: 1.5px; text-transform: uppercase; margin-bottom: 10px; }
.spec-cell .v { font-size: 18px; font-weight: 700; color: var(--ink); line-height: 1.3; }

/* Applications */
.apps-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.apps-grid.cols-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 900px) { .apps-grid, .apps-grid.cols-4 { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .apps-grid, .apps-grid.cols-4 { grid-template-columns: 1fr; } }
.app-card { padding: 26px; background: var(--bg); border: 1px solid var(--line); overflow: hidden; }
.app-card .app-img { margin: -26px -26px 18px; aspect-ratio: 4 / 3; overflow: hidden; background: var(--bg-2); }
.app-card .app-img img { width: 100%; height: 100%; object-fit: cover; display: block; }
.app-card .app-img.is-placeholder { display: grid; place-items: center; background: var(--bg-2); border-bottom: 1px dashed var(--line-2); color: var(--muted); }
.app-card .app-img.is-placeholder svg { width: 32px; height: 32px; opacity: .35; }
.app-card .num { font-family: 'JetBrains Mono', monospace; font-size: 11px; color: var(--accent); letter-spacing: 1.5px; margin-bottom: 12px; }
.app-card h3 { font-size: 16px; font-weight: 700; color: var(--ink); margin: 0 0 8px; }
.app-card p { font-size: 13px; color: var(--muted); margin: 0; line-height: 1.65; }

/* Other products */
.other-prods { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
@media (max-width: 900px) { .other-prods { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .other-prods { grid-template-columns: 1fr; } }
.other-prod-card { background: var(--bg); border: 1px solid var(--line); padding: 22px; transition: border-color .2s; }
.other-prod-card:hover { border-color: var(--accent); }
.other-prod-card .ico { width: 44px; height: 44px; background: var(--bg-2); display: grid; place-items: center; color: var(--accent); margin-bottom: 14px; }
.other-prod-card h4 { font-size: 15px; font-weight: 700; color: var(--ink); margin: 0 0 6px; }
.other-prod-card p { font-size: 12px; color: var(--muted); margin: 0 0 12px; line-height: 1.5; }
.other-prod-card .arrow { font-family: 'JetBrains Mono', monospace; font-size: 11px; color: var(--accent); letter-spacing: 1.5px; text-transform: uppercase; }

/* Hero trust chips (above h1) */
.pp-trust-chips { display: flex; flex-wrap: wrap; gap: 8px; margin: 0 0 20px; }
.pp-chip { font-family: 'JetBrains Mono', monospace; font-size: 11px; font-weight: 600; letter-spacing: 0.5px; padding: 6px 12px; background: rgba(3,105,161,.08); color: var(--accent); border: 1px solid rgba(3,105,161,.18); border-radius: 4px; }

/* Market segments grid (4 cards) */
.segments-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
@media (max-width: 900px) { .segments-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .segments-grid { grid-template-columns: 1fr; } }
.seg-card { padding: 28px 24px; background: var(--bg); border: 1px solid var(--line); }
.seg-card h3 { font-size: 17px; font-weight: 800; color: var(--ink); margin: 0 0 6px; }
.seg-card .seg-app { font-family: 'JetBrains Mono', monospace; font-size: 11px; letter-spacing: 0.5px; color: var(--accent); margin: 0 0 16px; line-height: 1.5; }
.seg-card .seg-bullets { list-style: none; padding: 0; margin: 0; font-size: 13px; color: var(--ink-2); line-height: 1.65; }
.seg-card .seg-bullets li { padding: 6px 0 6px 18px; position: relative; border-top: 1px solid var(--line); }
.seg-card .seg-bullets li:first-child { border-top: 0; }
.seg-card .seg-bullets li::before { content: ''; position: absolute; left: 0; top: 13px; width: 8px; height: 8px; border: 1.5px solid var(--accent); border-right: 0; border-top: 0; transform: rotate(-45deg) translateY(-2px); }

/* OEM banner section */
.pp-banner { padding: 64px 0; background: var(--bg-3); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.pp-banner-grid { display: grid; grid-template-columns: 1.4fr 1fr; gap: 48px; align-items: center; }
@media (max-width: 760px) { .pp-banner-grid { grid-template-columns: 1fr; gap: 32px; } }
.pp-banner-text .eyebrow { font-family: 'JetBrains Mono', monospace; font-size: 12px; letter-spacing: 2px; color: var(--accent); text-transform: uppercase; margin-bottom: 14px; }
.pp-banner-text h2 { font-size: clamp(24px, 3vw, 34px); font-weight: 800; color: var(--ink); margin: 0 0 14px; line-height: 1.25; letter-spacing: -0.5px; }
.pp-banner-text p { font-size: 15px; line-height: 1.7; color: var(--ink-2); margin: 0; }
.pp-banner-cta-col { display: flex; flex-direction: column; gap: 16px; }
.banner-metric { padding: 14px 18px; background: var(--bg); border-left: 3px solid var(--accent); }
.banner-metric strong { display: block; font-size: 20px; font-weight: 800; color: var(--ink); line-height: 1.2; }
.banner-metric span { display: block; font-size: 12px; color: var(--muted); margin-top: 2px; }
.pp-banner-btn { display: inline-flex; align-items: center; justify-content: center; padding: 14px 24px; background: var(--accent); color: #fff; font-family: 'JetBrains Mono', monospace; font-size: 13px; font-weight: 600; letter-spacing: 2px; text-transform: uppercase; transition: background .2s; margin-top: 8px; }
.pp-banner-btn:hover { background: #075985; }

/* Cert badges row */
.pp-cert-row { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; margin: 24px 0 16px; }
.pp-cert-item { display: inline-flex; align-items: center; gap: 8px; padding: 10px 18px; background: var(--bg); border: 1px solid var(--line-2); font-family: 'JetBrains Mono', monospace; font-size: 13px; font-weight: 700; color: var(--ink); letter-spacing: 0.8px; }
.pp-cert-item svg { color: var(--accent); }
.pp-cert-note { text-align: center; font-size: 12px; color: var(--muted); margin: 0; }

/* CTA section */
.pp-cta { background: var(--bg-2); color: var(--ink-2); padding: 80px 0; border-top: 1px solid var(--line); }
.pp-cta-content { text-align: center; max-width: 600px; margin: 0 auto; }
.pp-cta .eyebrow { display: inline-flex; align-items: center; gap: 10px; font-size: 14px; font-weight: 700; color: var(--ink); margin-bottom: 14px; justify-content: center; }
.pp-cta h2 { font-size: clamp(28px, 3vw, 40px); font-weight: 800; color: var(--ink); margin: 0 0 16px; letter-spacing: -0.5px; }
.pp-cta p { color: var(--ink-2); margin: 0 0 32px; font-size: 16px; line-height: 1.7; }
.pp-cta-buttons { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.pp-cta-btn { display: inline-flex; align-items: center; gap: 8px; padding: 14px 28px; background: var(--accent); color: #fff; font-family: 'JetBrains Mono', monospace; font-size: 13px; font-weight: 600; letter-spacing: 2px; text-transform: uppercase; transition: background .2s; }
.pp-cta-btn:hover { background: #075985; }
.pp-cta-btn.ghost { background: transparent; color: var(--ink); border: 1px solid var(--line-2); }
.pp-cta-btn.ghost:hover { border-color: var(--accent); color: var(--accent); background: transparent; }

/* Footer */
footer.site { background: var(--bg-3); color: var(--ink-2); padding: 56px 0 24px; border-top: 3px solid var(--accent); }
.f-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.5fr; gap: 48px; margin-bottom: 40px; }
@media (max-width: 760px) { .f-grid { grid-template-columns: 1fr 1fr; } }
.f-col h4 { font-family: 'JetBrains Mono', monospace; font-size: 12px; letter-spacing: 2px; text-transform: uppercase; color: var(--accent); margin: 0 0 18px; font-weight: 700; }
.f-col ul { list-style: none; padding: 0; margin: 0; }
.f-col li { margin-bottom: 10px; font-size: 14px; color: var(--ink-2); }
.f-col a:hover { color: var(--accent); }
.f-brand { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; }
.f-brand-mark { width: 42px; height: 42px; border-radius: 6px; overflow: hidden; flex-shrink: 0; }
.f-brand-mark img { width: 100%; height: 100%; object-fit: cover; display: block; }
.f-brand-name { display: block; font-family: 'Inter','Noto Sans SC',sans-serif; font-size: 15px; font-weight: 700; color: var(--accent); letter-spacing: normal; line-height: 1.3; text-align: justify; text-align-last: justify; }
.f-brand-en { display: block; font-family: 'Inter','Noto Sans SC',sans-serif; font-size: 10px; font-weight: 500; color: var(--muted); letter-spacing: 0.5px; margin-top: 4px; text-align: justify; text-align-last: justify; text-transform: none; }
.f-about p { font-size: 14px; line-height: 1.7; margin: 0; color: var(--ink-2); }
.f-bottom { border-top: 1px solid var(--line); padding-top: 24px; font-family: 'JetBrains Mono', monospace; font-size: 11px; color: var(--muted); display: flex; justify-content: space-between; flex-wrap: wrap; gap: 16px; letter-spacing: 1px; }

/* Mobile — shrink brand fonts & collapse CTA so full bilingual brand name fits */
@media (max-width: 900px) {
  .h-inner { gap: 12px; }
  .brand-mark { width: 44px; height: 44px; flex-shrink: 0; }
  .b-cn { font-size: 16px; text-align: left; text-align-last: left; }
  .b-en { font-size: 9px; letter-spacing: 0.3px; text-align: left; text-align-last: left; }
  .h-cta span { display: none; }
  .h-cta { padding: 10px; }
}
@media (max-width: 640px) {
  .h-cta { display: none; }
  .f-grid { grid-template-columns: 1fr; gap: 32px; }
}
@media (max-width: 760px) {
  .f-brand-name { font-size: 13px; text-align: left; text-align-last: left; }
  .f-brand-en { font-size: 8px; letter-spacing: 0.3px; text-align: left; text-align-last: left; }
}

/* WhatsApp floating button */
.wa-float {
  position: fixed;
  bottom: 28px;
  right: 24px;
  z-index: 998;
  display: inline-flex;
  align-items: center;
  gap: 9px;
  background: #25D366;
  color: #fff;
  padding: 13px 20px 13px 16px;
  border-radius: 50px;
  box-shadow: 0 4px 20px rgba(37,211,102,.35);
  font-family: 'Inter','Noto Sans SC',sans-serif;
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  transition: transform .2s, box-shadow .2s;
  line-height: 1;
}
.wa-float:hover { transform: translateY(-3px); box-shadow: 0 8px 28px rgba(37,211,102,.45); }
.wa-float svg { flex-shrink: 0; }
@media (max-width: 640px) {
  .wa-float { padding: 14px; border-radius: 50%; }
  .wa-float .wa-label { display: none; }
}

/* WhatsApp topbar item */
.tb-wa {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: #25D366 !important;
  font-weight: 600;
  font-size: 13px;
  transition: opacity .15s;
}
.tb-wa:hover { opacity: .8; }
.tb-wa svg { width: 15px; height: 15px; }