:root {
  --navy: #0f1e2e;
  --steel: #2c3e50;
  --accent: #1a6fc4;
  --accent-dark: #12518f;
  --silver: #eef2f6;
  --text: #2a2f35;
  --muted: #6b7480;
  --line: #dfe5ec;
  --white: #ffffff;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { font-family: var(--font); color: var(--text); line-height: 1.6; background: var(--white); }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* Header */
header { background: var(--navy); position: sticky; top: 0; z-index: 100; box-shadow: 0 1px 8px rgba(0,0,0,.15); }
.nav { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.logo { color: #fff; font-weight: 700; font-size: 1.25rem; letter-spacing: .5px; }
.logo span { color: #7fb3e8; }
nav ul { display: flex; list-style: none; gap: 4px; }
nav a { color: #c9d6e2; padding: 10px 14px; font-size: .95rem; border-radius: 6px; transition: .2s; }
nav a:hover, nav a.active { color: #fff; background: rgba(255,255,255,.08); }
.nav-cta { background: var(--accent) !important; color: #fff !important; font-weight: 600; }
.nav-toggle { display: none; background: none; border: none; color: #fff; font-size: 1.6rem; cursor: pointer; }

/* Hero */
.hero { position: relative; background: linear-gradient(135deg, #0f1e2e 0%, #1a3550 55%, #22456b 100%); color: #fff; padding: 90px 0 80px; overflow: hidden; }
.hero::after { content: ""; position: absolute; right: -60px; bottom: -80px; width: 420px; height: 420px; border-radius: 50%; background: radial-gradient(circle, rgba(127,179,232,.25), transparent 70%); }
.hero .container { position: relative; z-index: 1; }
.hero h1 { font-size: 2.7rem; line-height: 1.15; margin-bottom: 18px; font-weight: 800; max-width: 780px; }
.hero h1 em { font-style: normal; color: #7fb3e8; }
.hero p { font-size: 1.15rem; color: #cfdce8; max-width: 640px; margin-bottom: 30px; }
.btn { display: inline-block; padding: 13px 28px; border-radius: 8px; font-weight: 600; font-size: 1rem; transition: .2s; }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-dark); }
.btn-ghost { background: transparent; color: #fff; border: 1px solid rgba(255,255,255,.4); margin-left: 10px; }
.btn-ghost:hover { background: rgba(255,255,255,.1); }
.hero-stats { display: flex; gap: 40px; margin-top: 48px; flex-wrap: wrap; }
.stat b { font-size: 2rem; display: block; color: #fff; }
.stat span { color: #9fb6cb; font-size: .92rem; }

/* Section */
section { padding: 72px 0; }
.section-head { text-align: center; max-width: 720px; margin: 0 auto 48px; }
.section-head h2 { font-size: 2rem; color: var(--navy); margin-bottom: 12px; }
.section-head p { color: var(--muted); }
.eyebrow { display: inline-block; color: var(--accent); font-weight: 700; font-size: .85rem; letter-spacing: 1.5px; text-transform: uppercase; margin-bottom: 8px; }

/* Cards */
.grid { display: grid; gap: 24px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.card { background: #fff; border: 1px solid var(--line); border-radius: 12px; overflow: hidden; transition: .25s; }
.card:hover { box-shadow: 0 10px 30px rgba(15,30,46,.12); transform: translateY(-3px); }
.card img { height: 220px; width: 100%; object-fit: cover; background: var(--silver); }
.card-body { padding: 18px 20px 22px; }
.card-body h3 { font-size: 1.1rem; color: var(--navy); margin-bottom: 6px; }
.card-body p { color: var(--muted); font-size: .92rem; }

/* Product / finish cards */
.prod-card img { height: 200px; object-fit: contain; padding: 12px; background: #fff; }
.prod-card .card-body { text-align: center; }

/* Factory page */
.factory-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.factory-grid img { border-radius: 10px; height: 240px; object-fit: cover; }

/* Certification */
.cert-item { display: flex; align-items: center; gap: 16px; padding: 20px; border: 1px solid var(--line); border-radius: 12px; margin-bottom: 14px; background: #fff; }
.cert-icon { width: 52px; height: 52px; border-radius: 10px; background: var(--navy); color: #fff; display: flex; align-items: center; justify-content: center; font-weight: 800; font-size: 1.2rem; flex-shrink: 0; }
.cert-item h3 { color: var(--navy); font-size: 1.05rem; }
.cert-item p { color: var(--muted); font-size: .9rem; }

/* Finishes */
.finish-card { text-align: center; }
.finish-card img { height: 340px; width: 100%; object-fit: contain; background: #f6f8fa; border-bottom: 1px solid var(--line); }
.finish-card .chip { display: inline-block; padding: 6px 14px; border-radius: 20px; background: var(--silver); color: var(--steel); font-weight: 600; font-size: .85rem; margin: 0 4px 8px; }

/* Process steps */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.step { text-align: center; padding: 24px 16px; border: 1px solid var(--line); border-radius: 12px; }
.step .num { width: 40px; height: 40px; margin: 0 auto 12px; border-radius: 50%; background: var(--accent); color: #fff; display: flex; align-items: center; justify-content: center; font-weight: 700; }
.step h4 { color: var(--navy); font-size: .98rem; }
.step p { color: var(--muted); font-size: .85rem; }

/* Contact */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: start; }
.contact-item { display: flex; gap: 14px; margin-bottom: 22px; }
.contact-item .ic { width: 44px; height: 44px; border-radius: 10px; background: var(--silver); color: var(--accent); display: flex; align-items: center; justify-content: center; font-size: 1.2rem; flex-shrink: 0; }
.contact-item b { display: block; color: var(--navy); }
.contact-item p { color: var(--muted); font-size: .95rem; }
.contact-form input, .contact-form textarea { width: 100%; padding: 13px 14px; border: 1px solid var(--line); border-radius: 8px; margin-bottom: 14px; font-size: .95rem; font-family: inherit; }
.contact-form textarea { height: 140px; resize: vertical; }
.contact-form .btn { width: 100%; border: none; cursor: pointer; }

/* Footer */
footer { background: var(--navy); color: #9fb6cb; padding: 48px 0 28px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 40px; margin-bottom: 32px; }
.footer-grid h4 { color: #fff; margin-bottom: 14px; font-size: 1rem; }
.footer-grid a { display: block; margin-bottom: 8px; font-size: .92rem; }
.footer-grid a:hover { color: #fff; }
.footer-logo { color: #fff; font-weight: 700; font-size: 1.15rem; margin-bottom: 10px; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.1); padding-top: 20px; font-size: .85rem; }

/* Product detail page */
.pd-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start; }
.pd-main-img { border: 1px solid var(--line); border-radius: 14px; padding: 16px; background: #fff; }
.pd-main-img img { height: 420px; width: 100%; object-fit: contain; }
.pd-thumbs { display: flex; gap: 10px; margin-top: 12px; flex-wrap: wrap; }
.pd-thumbs img { width: 84px; height: 84px; object-fit: cover; border-radius: 8px; border: 2px solid var(--line); cursor: pointer; background: #fff; }
.pd-thumbs img:hover { border-color: var(--accent); }
.pd-title h1 { font-size: 2rem; color: var(--navy); margin-bottom: 8px; }
.pd-title .tag { display: inline-block; background: var(--silver); color: var(--steel); padding: 4px 12px; border-radius: 20px; font-size: .85rem; font-weight: 600; margin-bottom: 14px; }
.pd-title p.lead { color: var(--muted); font-size: 1.05rem; margin-bottom: 20px; }
.pd-spec { border-top: 1px solid var(--line); padding-top: 16px; margin-top: 8px; }
.pd-spec table { width: 100%; border-collapse: collapse; }
.pd-spec td { padding: 9px 0; font-size: .95rem; border-bottom: 1px solid var(--silver); }
.pd-spec td:first-child { color: var(--muted); width: 40%; }
.pd-spec td:last-child { color: var(--text); font-weight: 500; }
.pd-cta { margin-top: 24px; display: flex; gap: 12px; flex-wrap: wrap; }
.pd-related { margin-top: 64px; }
.crumb { font-size: .85rem; color: var(--muted); margin-bottom: 20px; }
.crumb a { color: var(--accent); }

/* Responsive */
@media (max-width: 900px) {
  .pd-grid { grid-template-columns: 1fr; }
  .pd-main-img img { height: 300px; }
  .grid-3, .grid-4, .steps { grid-template-columns: repeat(2, 1fr); }
  .factory-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .hero h1 { font-size: 2rem; }
  nav ul { display: none; flex-direction: column; position: absolute; top: 68px; left: 0; right: 0; background: var(--navy); padding: 12px 24px 20px; }
  nav ul.open { display: flex; }
  .nav-toggle { display: block; }
}
@media (max-width: 560px) {
  .grid-2, .grid-3, .grid-4, .steps { grid-template-columns: 1fr; }
  .factory-grid { grid-template-columns: 1fr; }
  .hero-stats { gap: 24px; }
}