:root {
  --ink: #122033;
  --muted: #5b6b7d;
  --line: #dce4ec;
  --paper: #ffffff;
  --soft: #f2f6f8;
  --brand: #00a6bd;
  --brand-dark: #007b91;
  --navy: #102c43;
  --radius: 18px;
  --shadow: 0 18px 45px rgba(15, 43, 64, .10);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--paper); font: 16px/1.65 Arial, Helvetica, sans-serif; }
img { max-width: 100%; height: auto; }
a { color: var(--brand-dark); }
a:hover { color: var(--brand); }
.shell { width: min(1180px, calc(100% - 40px)); margin-inline: auto; }
.skip-link { position: fixed; left: 12px; top: -60px; z-index: 1000; padding: 10px 14px; background: #fff; border-radius: 8px; }
.skip-link:focus { top: 12px; }
.site-header { position: sticky; top: 0; z-index: 100; background: rgba(255,255,255,.96); border-bottom: 1px solid var(--line); backdrop-filter: blur(12px); }
.header-inner { min-height: 92px; display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.brand img { display: block; width: 210px; }
.site-nav { display: flex; align-items: center; gap: 6px; }
.site-nav a { padding: 10px 13px; color: var(--ink); font-size: 14px; font-weight: 700; text-decoration: none; border-radius: 999px; }
.site-nav a:hover, .site-nav a.active { color: #fff; background: var(--navy); }
.menu-toggle { display: none; border: 1px solid var(--line); background: #fff; padding: 9px 12px; border-radius: 8px; color: var(--ink); font-weight: 700; }
.hero { overflow: hidden; color: #fff; background: radial-gradient(circle at 80% 20%, rgba(0,188,212,.38), transparent 30%), linear-gradient(135deg, #0d263c, #14506d 62%, #007f91); }
.hero-grid { min-height: 620px; display: grid; grid-template-columns: 1.1fr .9fr; align-items: center; gap: 50px; }
.hero h1, .page-hero h1 { margin: 0 0 22px; font-size: clamp(42px, 6vw, 72px); line-height: 1.03; letter-spacing: -.04em; }
.hero-copy { max-width: 660px; font-size: 20px; color: #dcebf0; }
.eyebrow { margin: 0 0 12px; color: var(--brand); font-size: 13px; font-weight: 800; letter-spacing: .14em; text-transform: uppercase; }
.hero .eyebrow { color: #77e7f2; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 0 22px; border-radius: 999px; font-weight: 800; text-decoration: none; }
.button.primary { color: #fff; background: var(--brand); }
.button.primary:hover { color: #fff; background: #00bdd6; }
.button.secondary { color: #fff; border: 1px solid rgba(255,255,255,.45); }
.hero-visual { position: relative; min-height: 430px; display: grid; place-items: center; }
.bearing-ring { width: 330px; height: 330px; border: 68px solid rgba(255,255,255,.12); border-radius: 50%; box-shadow: inset 0 0 0 2px rgba(255,255,255,.2), 0 30px 70px rgba(0,0,0,.22); }
.hero-visual img { position: absolute; width: 142px; padding: 10px; background: #fff; border-radius: 50%; box-shadow: var(--shadow); }
.hero-visual img:nth-of-type(1) { left: 4%; top: 8%; }
.hero-visual img:nth-of-type(2) { right: 0; top: 28%; }
.hero-visual img:nth-of-type(3) { left: 24%; bottom: 0; }
.section { padding-block: 88px; }
.section-heading { margin-bottom: 28px; display: flex; align-items: end; justify-content: space-between; gap: 20px; }
.section h2, .catalog-group h2 { margin: 0; font-size: clamp(28px, 4vw, 44px); line-height: 1.14; letter-spacing: -.025em; }
.product-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.product-card { min-height: 230px; padding: 26px; display: grid; place-items: center; text-align: center; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; transition: transform .2s ease, box-shadow .2s ease; }
.product-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.product-card h3 { margin: 16px 0 0; font-size: 17px; }
.muted-section { background: var(--soft); }
.split-panel { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 70px; }
.split-panel p { max-width: 790px; color: var(--muted); }
.split-panel img { width: 260px; border-radius: var(--radius); box-shadow: var(--shadow); }
.text-link { font-weight: 800; }
.feature-links { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.feature-link { min-height: 230px; padding: 28px; display: flex; flex-direction: column; justify-content: end; color: #fff; text-decoration: none; border-radius: var(--radius); background-size: cover; background-position: center; box-shadow: inset 0 0 0 1000px rgba(8,35,54,.52); }
.feature-link:hover { color: #fff; box-shadow: inset 0 0 0 1000px rgba(0,128,148,.58); }
.feature-link span { font-size: 13px; font-weight: 800; text-transform: uppercase; letter-spacing: .12em; }
.feature-link strong { font-size: 25px; }
.facility-link { background-image: url('../images/facility/003.jpg'); }
.application-link { background-image: url('../images/applications/009.jpg'); }
.technical-link { background-image: linear-gradient(135deg, #15364f, #008ca1); }
.page-hero { padding-block: 88px; color: #fff; background: linear-gradient(135deg, #102b42, #087e92); }
.page-hero h1 { font-size: clamp(40px, 5vw, 64px); }
.page-hero p { max-width: 760px; color: #dcebf0; font-size: 19px; }
.catalog-list { padding-block: 64px 96px; }
.catalog-group { padding: 34px 0; border-bottom: 1px solid var(--line); }
.catalog-title { display: flex; align-items: center; gap: 24px; margin-bottom: 24px; }
.catalog-title img { width: 96px; padding: 8px; border: 1px solid var(--line); border-radius: 50%; }
.subcategory-grid { margin: 0; padding: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; list-style: none; }
.subcategory-grid li { min-height: 110px; padding: 12px; display: flex; align-items: center; gap: 12px; border: 1px solid var(--line); border-radius: 12px; }
.subcategory-grid img { width: 72px; height: 72px; object-fit: contain; flex: 0 0 auto; }
.subcategory-grid span { font-weight: 700; font-size: 14px; }
.empty-note { color: var(--muted); }
.featured-product { display: flex; align-items: center; justify-content: center; gap: 44px; }
.featured-product img { width: 240px; padding: 18px; border-radius: var(--radius); background: #fff; box-shadow: var(--shadow); }
.gallery-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.gallery-card { margin: 0; overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; box-shadow: 0 10px 28px rgba(15,43,64,.07); }
.gallery-card img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; display: block; }
.gallery-card figcaption { padding: 16px 18px; font-weight: 800; }
.prose { max-width: 980px; }
.prose p { color: #33465a; }
.prose img { border-radius: 12px; }
.prose .img_fleft { float: left; margin: 0 28px 14px 0; }
.prose .img_fright { float: right; margin: 0 0 14px 28px; }
.prose table { width: 100% !important; margin: 24px 0 !important; border-collapse: collapse; background: transparent !important; }
.prose td, .prose th { padding: 8px; border: 1px solid #9aabb9; vertical-align: top; }
.technical-prose { overflow-x: auto; }
.contact-layout { display: grid; grid-template-columns: 1fr 360px; gap: 64px; align-items: start; }
.contact-card { padding: 30px; border-radius: var(--radius); color: #fff; background: var(--navy); box-shadow: var(--shadow); }
.contact-card h2 { margin-top: 0; }
.small-note { font-size: 13px; color: #cbd9e3; }
.error-hero { min-height: 55vh; display: grid; align-items: center; }
.site-footer { padding-top: 58px; color: #d7e2e9; background: #0a2234; }
.site-footer a { color: #8de4ee; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 42px; }
.footer-grid p { color: #aec0cc; }
.copyright { margin-top: 38px; padding-block: 20px; border-top: 1px solid rgba(255,255,255,.12); color: #8fa6b4; font-size: 13px; }
@media (max-width: 960px) {
  .menu-toggle { display: block; }
  .site-nav { position: absolute; left: 20px; right: 20px; top: 82px; padding: 14px; display: none; flex-direction: column; align-items: stretch; background: #fff; border: 1px solid var(--line); border-radius: 14px; box-shadow: var(--shadow); }
  .site-nav.open { display: flex; }
  .hero-grid { grid-template-columns: 1fr; padding-block: 90px; }
  .hero-visual { display: none; }
  .product-grid, .subcategory-grid { grid-template-columns: repeat(2, 1fr); }
  .feature-links { grid-template-columns: 1fr; }
  .gallery-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-layout { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .shell { width: min(100% - 24px, 1180px); }
  .header-inner { min-height: 76px; }
  .brand img { width: 165px; }
  .site-nav { top: 70px; left: 12px; right: 12px; }
  .hero-grid { min-height: auto; padding-block: 72px; }
  .hero h1, .page-hero h1 { font-size: 40px; }
  .section, .page-hero { padding-block: 62px; }
  .product-grid, .subcategory-grid, .gallery-grid, .footer-grid { grid-template-columns: 1fr; }
  .split-panel { grid-template-columns: 1fr; gap: 30px; }
  .section-heading { align-items: start; flex-direction: column; }
  .catalog-title { align-items: flex-start; }
  .featured-product { flex-direction: column; align-items: flex-start; }
  .prose .img_fleft, .prose .img_fright { float: none; margin: 0 0 18px; }
}