/* ============================================
   SHENGTONG - Engineering Plastics Manufacturer
   Design refs: Ensinger, Trelleborg, Rochling, Quadrant
   ============================================ */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --navy-950: #001a33;
  --navy-900: #002952;
  --navy-800: #003666;
  --navy-700: #004480;
  --navy-600: #005299;
  --navy-500: #0061b3;
  --navy-400: #3382cc;
  --orange-600: #c75b1a;
  --orange-500: #e06a20;
  --orange-400: #e8853d;
  --green-700: #14532d;
  --green-600: #16a34a;
  --green-500: #22c55e;
  --gray-50: #f8f9fb;
  --gray-100: #edf0f5;
  --gray-200: #dde1e8;
  --gray-300: #c4c9d4;
  --gray-400: #9298a5;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;
  --white: #ffffff;
  --font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --radius-sm: 6px;
  --radius: 8px;
  --radius-lg: 12px;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.06);
  --shadow-lg: 0 4px 16px rgba(0,0,0,0.08), 0 2px 6px rgba(0,0,0,0.04);
  --ease: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html { scroll-behavior: smooth; scroll-padding-top: 80px; }

body {
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.6;
  color: var(--gray-800);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }

.container { width: 100%; max-width: 1240px; margin: 0 auto; padding: 0 28px; }

.section { padding: 96px 0; }
.section-alt { background: var(--gray-50); border-top: 1px solid var(--gray-100); }

.section-header { max-width: 720px; margin: 0 auto 64px; text-align: center; }

.section-eyebrow {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--orange-500);
  margin-bottom: 12px;
  padding: 6px 14px;
  border-left: 3px solid var(--orange-500);
  background: transparent;
  border-radius: 0;
}

.section-title {
  font-size: clamp(26px, 4vw, 40px);
  font-weight: 800;
  color: var(--navy-900);
  line-height: 1.18;
  letter-spacing: -0.025em;
}

.section-subtitle {
  font-size: 16px;
  color: var(--gray-500);
  margin-top: 14px;
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
}

/* Header */
.header {
  position: fixed;
  top: 0; left: 0; right: 0; z-index: 1000;
  background: var(--white);
  box-shadow: 0 1px 0 rgba(0,0,0,0.06);
  transition: var(--ease);
  height: 72px;
}

.header.scrolled {
  background: var(--white);
  box-shadow: 0 2px 16px rgba(0,0,0,0.08);
}

.header-inner {
  display: flex; align-items: center; justify-content: space-between; height: 72px;
}

.logo { display: flex; align-items: center; gap: 11px; flex-shrink: 0; }
.logo-icon { flex-shrink: 0; }
.logo-text { display: flex; flex-direction: column; }
.logo-name {
  font-size: 17px; font-weight: 800; color: var(--navy-900);
  letter-spacing: 0.05em; line-height: 1.1;
}
.logo-sub {
  font-size: 10px; font-weight: 500; color: var(--gray-500);
  letter-spacing: 0.1em; text-transform: uppercase;
}

.nav { display: flex; align-items: center; gap: 2px; }
.nav-link {
  padding: 8px 16px; font-size: 13.5px; font-weight: 500;
  color: var(--gray-600); border-radius: var(--radius-sm);
  transition: var(--ease); white-space: nowrap;
}
.nav-link:hover { color: var(--navy-800); background: var(--gray-50); }
.nav-link.active { color: var(--orange-500); background: transparent; }

.nav-toggle {
  display: none; flex-direction: column; gap: 5px;
  background: none; border: none; cursor: pointer; padding: 6px; z-index: 1001;
}
.nav-toggle span {
  display: block; width: 22px; height: 2px;
  background: var(--navy-900); border-radius: 1px; transition: var(--ease);
}

/* Hero */
.hero {
  position: relative; min-height: 100vh; display: flex;
  align-items: center; background: var(--navy-950); overflow: hidden;
}
.hero-bg {
  position: absolute; inset: 0;
  background-image: url("../images/hero_bg.jpg");
  background-size: cover;
  background-position: center;
  z-index: 0;
}
.hero-bg::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(160deg, rgba(0,25,51,0.45) 0%, rgba(0,25,51,0.30) 60%, rgba(0,25,51,0.40) 100%);
}
.hero-grid-bg { display: none; }
.hero-accent-shape { display: none; }

.hero-content { position: relative; z-index: 1; max-width: 760px; padding-top: 20px; }
.hero-eyebrow { font-size: 12px; font-weight: 600; color: var(--white); text-transform: uppercase; letter-spacing: 0.16em; margin-bottom: 22px; display: inline-block; border-left: 3px solid var(--white);
  padding-left: 14px;
  background: transparent;
  border-radius: 0;
}
.hero-title {
  font-size: clamp(34px, 5.5vw, 60px); font-weight: 900; color: var(--white);
  line-height: 1.08; letter-spacing: -0.035em; margin-bottom: 22px;
}
.hero-title-accent { color: var(--orange-500); }
.hero-desc {
  font-size: 17px; color: rgba(255,255,255,0.72);
  max-width: 560px; margin-bottom: 36px; line-height: 1.7;
}
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 64px; }
.hero-stats-row { display: flex; gap: 48px; flex-wrap: wrap; }
.hero-stat { display: flex; flex-direction: column; }
.hero-stat-num { font-size: 40px; font-weight: 900; color: var(--white); line-height: 1; }
.hero-stat-label {
  font-size: 12px; color: rgba(255,255,255,0.55);
  font-weight: 500; text-transform: uppercase; letter-spacing: 0.1em; margin-top: 5px;
}

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 13px 30px; font-size: 14.5px; font-weight: 600;
  border-radius: var(--radius); transition: var(--ease); cursor: pointer;
  border: 2px solid transparent; white-space: nowrap; font-family: var(--font);
}
.btn-primary { background: var(--orange-500); color: var(--white); border-color: var(--orange-500); }
.btn-primary:hover {
  background: var(--orange-600); border-color: var(--orange-600);
  transform: translateY(-2px); box-shadow: 0 8px 24px rgba(224,106,32,0.35);
}
.btn-outline { background: transparent; color: var(--white); border-color: rgba(255,255,255,0.28); }
.btn-outline:hover {
  border-color: var(--white); background: rgba(255,255,255,0.06); transform: translateY(-2px);
}
.btn-lg { padding: 17px 40px; font-size: 16px; }

/* About */
.about-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-bottom: 56px; }
.about-card {
  background: var(--white); border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg); padding: 30px 22px; text-align: center;
  transition: var(--ease);
}
.about-card:hover { border-color: var(--navy-400); box-shadow: var(--shadow-lg); }
.about-card-icon {
  width: 52px; height: 52px; border-radius: var(--radius);
  background: rgba(22,163,74,0.08); display: inline-flex; align-items: center;
  justify-content: center; color: var(--green-600); margin-bottom: 16px;
}
.about-card-num {
  display: block; font-size: 34px; font-weight: 800; color: var(--navy-900);
  line-height: 1.15; margin-bottom: 3px;
}
.about-card-label { font-size: 13px; color: var(--gray-500); font-weight: 500; }
.about-text { max-width: 780px; margin: 0 auto; }
.about-text p { color: var(--gray-600); font-size: 15px; line-height: 1.8; margin-bottom: 14px; }
.about-text p:last-child { margin-bottom: 0; }

/* Products */
.products-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.product-card-link {
  text-decoration: none; color: inherit; display: block;
}
.product-card-link .product-card { transition: var(--ease); }
.product-card-link:hover .product-card {
  border-color: var(--navy-400);
  box-shadow: var(--shadow-lg);
}
.product-card {
  background: var(--white); border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg); padding: 28px 24px; transition: var(--ease);
  height: 100%;
  display: flex;
  flex-direction: column;
}
.product-card:hover { border-color: var(--navy-400); box-shadow: var(--shadow-lg); }
.product-card-img {
  width: 100%; height: 180px; object-fit: cover;
  border-radius: var(--radius); margin-bottom: 16px;
}
.product-card-icon { display: none; }
.product-card h3 { font-size: 16px; font-weight: 700; color: var(--navy-900); margin-bottom: 14px; }
.product-card ul { display: flex; flex-direction: column; gap: 9px; }
.product-card li { font-size: 13.5px; color: var(--gray-600); line-height: 1.5; padding-left: 16px; position: relative; }
.product-card li::before {
  content: ""; position: absolute; left: 0; top: 7px;
  width: 5px; height: 5px; border-radius: 50%; background: var(--green-500);
}

/* Advantages */
.advantages-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; max-width: 920px; margin: 0 auto; }
.adv-item {
  display: flex; gap: 18px; padding: 26px; border-radius: var(--radius-lg);
  border: 1px solid var(--gray-200); background: var(--white); transition: var(--ease);
}
.adv-item:hover { border-color: var(--orange-400); box-shadow: var(--shadow); }
.adv-num { font-size: 26px; font-weight: 900; color: var(--orange-500); line-height: 1; flex-shrink: 0; width: 36px; }
.adv-content h4 { font-size: 15px; font-weight: 700; color: var(--navy-900); margin-bottom: 5px; }
.adv-content p { font-size: 13.5px; color: var(--gray-500); line-height: 1.6; }

/* Certifications */
.certs-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 18px; }
.cert-card {
  background: var(--white); border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg); padding: 28px 14px; text-align: center;
  transition: var(--ease);
}
.cert-card:hover { border-color: var(--orange-400); box-shadow: var(--shadow-lg); }
.cert-badge {
  width: 52px; height: 52px; border-radius: 50%;
  background: rgba(232,131,42,0.08); display: inline-flex; align-items: center;
  justify-content: center; color: var(--orange-500); margin-bottom: 14px;
}
.cert-card h4 { font-size: 14px; font-weight: 700; color: var(--navy-900); margin-bottom: 3px; }
.cert-card p { font-size: 11.5px; color: var(--gray-500); }

/* CTA */
.cta-section {
  padding: 88px 0; background: var(--navy-950);
  position: relative; overflow: hidden;
}
.cta-section::before {
  content: ""; position: absolute;
  width: 500px; height: 500px; border-radius: 50%;
  background: radial-gradient(circle, rgba(232,131,42,0.08) 0%, transparent 70%);
  bottom: -250px; left: -100px;
}
.cta-box { position: relative; z-index: 1; text-align: center; max-width: 600px; margin: 0 auto; }
.cta-title {
  font-size: clamp(26px, 4vw, 38px); font-weight: 800;
  color: var(--white); margin-bottom: 14px; letter-spacing: -0.02em;
}
.cta-desc { font-size: 16px; color: rgba(255,255,255,0.52); margin-bottom: 32px; line-height: 1.65; }

/* Footer */
.footer { background: var(--gray-900); padding: 64px 0 28px; color: rgba(255,255,255,0.6); }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.4fr; gap: 44px; margin-bottom: 44px; }
.footer-desc { font-size: 13.5px; line-height: 1.7; margin-top: 18px; max-width: 300px; color: rgba(255,255,255,0.42); }
.footer-col h4 {
  font-size: 12px; font-weight: 700; color: var(--white);
  text-transform: uppercase; letter-spacing: 0.12em; margin-bottom: 18px;
}
.footer-col ul { display: flex; flex-direction: column; gap: 9px; }
.footer-col ul a { font-size: 13.5px; color: rgba(255,255,255,0.45); transition: var(--ease); }
.footer-col ul a:hover { color: var(--orange-400); }
.contact-info li {
  display: flex; align-items: flex-start; gap: 10px;
  font-size: 13.5px; color: rgba(255,255,255,0.45); line-height: 1.5; margin-bottom: 10px;
}
.contact-info li:last-child { margin-bottom: 0; }
.contact-info svg { flex-shrink: 0; margin-top: 2px; color: var(--orange-400); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.06); padding-top: 22px;
  display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px;
}
.footer-bottom p { font-size: 12.5px; color: rgba(255,255,255,0.28); }
.footer-bottom-links { display: flex; gap: 20px; }
.footer-bottom-links a { font-size: 12.5px; color: rgba(255,255,255,0.28); transition: var(--ease); }
.footer-bottom-links a:hover { color: rgba(255,255,255,0.5); }


/* ---- Industries Grid ---- */
.industries-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; max-width: 1040px; margin: 0 auto; }
.ind-card {
  background: var(--white); border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg); padding: 28px 22px; text-align: center;
  transition: var(--ease);
}
.ind-card:hover { border-color: var(--navy-400); box-shadow: var(--shadow-lg); }
.ind-card-icon {
  width: 56px; height: 56px; border-radius: var(--radius);
  background: rgba(0,41,82,0.06); display: inline-flex; align-items: center;
  justify-content: center; color: var(--navy-600); margin-bottom: 16px;
}
.ind-card h4 { font-size: 15px; font-weight: 700; color: var(--navy-900); margin-bottom: 6px; }
.ind-card p { font-size: 13px; color: var(--gray-500); line-height: 1.5; }

/* ---- Careers ---- */
.careers-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; max-width: 960px; margin: 0 auto 36px; }
.career-card {
  background: var(--white); border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg); padding: 28px 24px;
  transition: var(--ease);
}
.career-card:hover { border-color: var(--orange-400); box-shadow: var(--shadow); }
.career-card-icon {
  width: 48px; height: 48px; border-radius: var(--radius);
  background: rgba(224,106,32,0.08); display: flex; align-items: center;
  justify-content: center; color: var(--orange-500); margin-bottom: 16px;
}
.career-card h4 { font-size: 16px; font-weight: 700; color: var(--navy-900); margin-bottom: 8px; }
.career-card p { font-size: 13.5px; color: var(--gray-500); line-height: 1.7; }
.careers-cta { text-align: center; }
.careers-cta p { font-size: 14px; color: var(--gray-500); margin-bottom: 14px; }
.careers-cta .btn { display: inline-flex; }

@media (max-width: 900px) {
  .industries-grid { grid-template-columns: repeat(2, 1fr); }
  .careers-grid { grid-template-columns: 1fr; }
}
@media (max-width: 520px) {
  .industries-grid { grid-template-columns: 1fr; }
}


/* Global Reach */
.global-section {
  background: linear-gradient(160deg, var(--navy-900) 0%, var(--navy-800) 50%, var(--navy-700) 100%);
  position: relative; overflow: hidden;
}
.global-section .section-eyebrow { color: var(--orange-400); background: transparent; border-left-color: var(--orange-400); }
.global-section .section-title { color: var(--white); }
.global-section .section-subtitle { color: rgba(255,255,255,0.55); }
.global-map { max-width: 700px; margin: 48px auto 0; display: flex; flex-wrap: wrap; justify-content: center; gap: 12px 24px; }
.global-region {
  font-size: 14px; color: rgba(255,255,255,0.7);
  padding: 10px 18px; border: 1px solid rgba(255,255,255,0.1);
  border-radius: 24px; transition: var(--ease);
}
.global-region:hover { background: rgba(255,255,255,0.06); border-color: rgba(255,255,255,0.2); color: var(--white); }

/* Responsive */
@media (max-width: 1100px) {
  .products-grid { grid-template-columns: repeat(2, 1fr); }
  .certs-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 860px) {
  .section { padding: 68px 0; }
  .container { padding: 0 20px; }
  .nav {
    position: fixed; top: 72px; left: 0; right: 0; bottom: 0;
    background: var(--white); flex-direction: column;
    justify-content: flex-start; align-items: stretch;
    padding: 20px; gap: 2px;
    transform: translateX(100%); opacity: 0; pointer-events: none; transition: var(--ease);
  }
  .nav.open { transform: translateX(0); opacity: 1; pointer-events: auto; }
  .nav-link {
    padding: 14px 22px; font-size: 16px; border-radius: var(--radius);
    color: var(--gray-700);
  }
  .nav-link:hover { background: var(--gray-50); color: var(--navy-900); }
  .nav-link.active { color: var(--orange-500); }
  .nav-toggle { display: flex; }
  .hero-stats-row { gap: 28px; }
  .hero-stat-num { font-size: 32px; }
  .hero-cta { flex-direction: column; }
  .hero-cta .btn { width: 100%; }
  .about-grid { grid-template-columns: repeat(2, 1fr); }
  .advantages-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .footer-bottom-links { justify-content: center; }
}

@media (max-width: 520px) {
  .about-grid { grid-template-columns: 1fr; }
  .products-grid { grid-template-columns: 1fr; }
  .certs-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-title { font-size: 28px; }
  .footer-grid { grid-template-columns: 1fr; }
}


/* ---- Mega Menu ---- */
.nav-mega { display: flex; align-items: center; position: relative; height: 100%; }
.mega-panel {
  display: none; position: absolute; top: 100%; left: -200px;
  background: var(--white); border: 1px solid var(--gray-100); border-radius: var(--radius-lg);
  box-shadow: 0 16px 48px rgba(0,0,0,0.12); padding: 28px 32px; z-index: 999;
  min-width: 820px;
  transition: opacity 0.2s ease, transform 0.2s ease;
  transform-origin: top;
}
.nav-mega:hover .mega-panel,
.nav-mega.show .mega-panel { display: block; }

.mega-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px 32px; }
.mega-grid.wide { grid-template-columns: repeat(4, 1fr); }
.mega-col {}
.mega-col-title {
  font-size: 13px; font-weight: 700; color: var(--navy-900); margin-bottom: 6px;
  letter-spacing: -0.01em; padding-bottom: 6px; border-bottom: 2px solid var(--orange-500);
}
.mega-col-title a { transition: var(--ease); }
.mega-col-title a:hover { color: var(--orange-500); }
.mega-col-links { display: flex; flex-direction: column; gap: 3px; }
.mega-col-links a {
  font-size: 12.5px; color: var(--gray-500); padding: 3px 0;
  transition: var(--ease);
}
.mega-col-links a:hover { color: var(--navy-700); }

.mega-industries { display: flex; flex-wrap: wrap; gap: 10px 20px; }
.mega-industries a {
  font-size: 13px; color: var(--gray-600); padding: 4px 0; white-space: nowrap;
  transition: var(--ease);
}
.mega-industries a:hover { color: var(--navy-700); }

@media (max-width: 860px) {
  .mega-panel { position: static; box-shadow: none; border: none; border-radius: 0; min-width: unset; padding: 0 0 0 20px; }
  .mega-grid { grid-template-columns: 1fr; gap: 10px; }
  .mega-industries { flex-direction: column; gap: 4px; }
}


/* Language Switcher */
.header-actions { display: flex; align-items: center; gap: 14px; }

.lang-switcher {
  display: flex; align-items: center; gap: 0;
  background: var(--gray-100);
  border-radius: 20px; padding: 3px;
  border: 1px solid var(--gray-200);
}

.lang-switcher button {
  background: none; border: none; color: var(--gray-500);
  font-size: 12px; font-weight: 600; cursor: pointer;
  padding: 5px 12px; border-radius: 18px;
  transition: var(--ease); font-family: var(--font);
  letter-spacing: 0.02em;
}

.lang-switcher button.active {
  background: var(--navy-900);
  color: var(--white);
}

.lang-switcher button:hover:not(.active) { color: var(--gray-700); }

.lang-divider {
  width: 1px; height: 14px; background: var(--gray-300);
}

@media (max-width: 860px) {
  .header-actions { gap: 10px; }
  .lang-switcher button { padding: 4px 10px; font-size: 11px; }
}

/* Product Image Cards */
.product-img {
  width: 100%;
  margin-bottom: 14px;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--ease);
}
.product-img:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-1px);
}
.product-img svg {
  width: 100%;
  height: auto;
  display: block;
}

/* ============================================
   Product Detail Page
   ============================================ */

.product-detail-section {
  padding-top: 100px;
  padding-bottom: 60px;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--gray-400);
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.breadcrumb-link {
  color: var(--gray-500);
  transition: var(--ease);
}

.breadcrumb-link:hover {
  color: var(--navy-700);
}

.breadcrumb-sep {
  color: var(--gray-300);
  user-select: none;
}

.product-carousel { max-width: 600px; margin: 0 auto 24px;
  position: relative;
  width: 100%;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--gray-100);
  margin-bottom: 36px;
}

.carousel-track {
  display: flex;
  transition: transform 0.5s ease;
}

.carousel-img { height: 350px;
  min-width: 100%;
  
  object-fit: cover;
  display: block;
}

.carousel-arrow { width: 32px; height: 32px;
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(255,255,255,0.92);
  border: 1px solid var(--gray-200);
  border-radius: 50%;
  width: 42px;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--ease);
  color: var(--navy-900);
  z-index: 2;
}

.carousel-arrow:hover {
  background: var(--white);
  box-shadow: var(--shadow-lg);
}

.carousel-arrow.prev { left: 16px; }
.carousel-arrow.next { right: 16px; }

.carousel-dots {
  position: absolute;
  bottom: 16px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 8px;
  z-index: 2;
}

.carousel-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  border: 2px solid var(--white);
  background: transparent;
  cursor: pointer;
  transition: var(--ease);
  padding: 0;
}

.carousel-dot.active {
  background: var(--white);
}

.product-title {
  font-size: clamp(26px, 4vw, 38px);
  font-weight: 800;
  color: var(--navy-900);
  letter-spacing: -0.025em;
  margin-bottom: 14px;
}

.product-desc {
  font-size: 17px;
  color: var(--gray-500);
  line-height: 1.7;
  margin-bottom: 48px;
  max-width: 700px;
}

.sub-section {
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  background: var(--white);
  padding: 0;
  margin-bottom: 14px;
  overflow: hidden;
}

.sub-section-inner {
  display: flex;
  gap: 0;
}

.sub-section-body {
  flex: 1;
  padding: 24px 28px;
}

.sub-section-body h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--navy-900);
  margin-bottom: 8px;
}

.specs {
  font-size: 14px;
  color: var(--gray-600);
  line-height: 1.8;
}

.product-cta {
  margin-top: 48px;
  padding: 40px;
  background: var(--navy-950);
  border-radius: var(--radius-lg);
  text-align: center;
}

.product-cta h3 {
  font-size: 22px;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 10px;
}

.product-cta p {
  font-size: 15px;
  color: rgba(255,255,255,0.55);
  margin-bottom: 16px;
  line-height: 1.6;
}

.product-cta .btn {
  display: inline-flex;
}

@media (max-width: 860px) {
  .product-detail-section {
    padding-top: 100px;
    padding-bottom: 60px;
  }

  .carousel-img { height: 350px;
    height: 260px;
  }

  .carousel-arrow { width: 32px; height: 32px;
    width: 34px;
    height: 34px;
  }

  .product-cta {
    padding: 28px 20px;
  }
}

@media (max-width: 520px) {
  .carousel-img { height: 350px;
    height: 220px;
  }
}

/* ---- SKU Database Cards ---- */
.sku-card { max-width: 860px; margin: 0 auto 12px;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  background: var(--white);
  margin-bottom: 16px;
  overflow: hidden;
  transition: var(--ease);
}

.sku-card:hover {
  border-color: var(--navy-400);
  box-shadow: var(--shadow);
}

.sku-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 28px;
  background: var(--gray-50);
  border-bottom: 1px solid var(--gray-100);
}

.sku-type {
  font-size: 17px;
  font-weight: 700;
  color: var(--navy-900);
}

.sku-badge {
  font-size: 11px;
  font-weight: 600;
  color: var(--gray-400);
  background: var(--white);
  padding: 4px 10px;
  border-radius: 4px;
  border: 1px solid var(--gray-200);
  font-family: monospace;
  letter-spacing: 0.04em;
}

.sku-body {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  padding: 28px;
}

.sku-section-title {
  font-size: 12px;
  font-weight: 700;
  color: var(--gray-400);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 12px;
}

.sku-list {
  list-style: disc;
  padding-left: 18px;
  display: flex;
  flex-direction: column;
  gap: 7px;
}

.sku-list li {
  font-size: 13.5px;
  color: var(--gray-600);
  line-height: 1.6;
}

.features-list li::marker { color: var(--orange-500); }
.uses-list li::marker { color: var(--navy-500); }

.sku-specs {
  padding: 0 28px 28px;
}

.specs-table {
  width: 100%;
  border-collapse: collapse;
  border: 1px solid var(--gray-100);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.specs-table th,
.specs-table td {
  padding: 10px 16px;
  text-align: left;
  font-size: 13px;
  border-bottom: 1px solid var(--gray-100);
}

.specs-table th {
  background: var(--gray-50);
  font-weight: 600;
  color: var(--gray-500);
  width: 160px;
  white-space: nowrap;
}

.specs-table td {
  color: var(--gray-700);
  line-height: 1.6;
}

.specs-table tr:last-child th,
.specs-table tr:last-child td {
  border-bottom: none;
}

.sku-footer {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  padding: 24px 28px;
  border-top: 1px solid var(--gray-100);
  background: var(--gray-50);
}

.sku-price p {
  font-size: 13px;
  color: var(--gray-600);
  line-height: 1.8;
  white-space: pre-line;
}

.sku-dwg-status {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 8px;
}

.db-dwg-yes {
  font-size: 13px;
  font-weight: 600;
  color: var(--green-600);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.db-dwg-yes svg {
  color: var(--green-500);
  flex-shrink: 0;
}

.db-dwg-no {
  font-size: 13px;
  font-weight: 600;
  color: var(--orange-500);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.db-dwg-no svg {
  color: var(--orange-400);
  flex-shrink: 0;
}

.sku-dwg-note {
  font-size: 12.5px;
  color: var(--gray-500);
  line-height: 1.6;
}

@media (max-width: 860px) {
  .sku-body {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .sku-footer {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .specs-table th {
    width: 120px;
  }

  .sku-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }
}
/* Carousel SKU label overlay */
.carousel-slide {
  position: relative;
  min-width: 100%;
}

.carousel-slide .carousel-img { height: 350px; height: 350px;
  width: 100%;
  
  object-fit: cover;
  display: block;
}

.carousel-label {
  position: absolute;
  top: 8px;
  left: 8px;
  background: rgba(0, 25, 51, 0.84);
  color: #fff;
  font-size: 11px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 4px;
  letter-spacing: 0.04em;
  z-index: 3;
  pointer-events: none;
  white-space: nowrap;
}

@media (max-width: 860px) {
  .carousel-slide .carousel-img { height: 350px; height: 350px;
    height: 260px;
  }
}

@media (max-width: 520px) {
  .carousel-slide .carousel-img { height: 350px; height: 350px;
    height: 220px;
  }
}
/* Industry page */
.ind-section {
  margin-bottom: 48px;
  max-width: 960px;
  margin-left: auto;
  margin-right: auto;
}

.ind-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 18px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--orange-500);
}

.ind-header svg {
  color: var(--navy-600);
  flex-shrink: 0;
}

.ind-header h2 {
  font-size: 20px;
  font-weight: 700;
  color: var(--navy-900);
  flex: 1;
}

.ind-count {
  font-size: 12px;
  font-weight: 600;
  color: var(--gray-400);
  background: var(--gray-100);
  padding: 3px 10px;
  border-radius: 12px;
}

.ind-products {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 10px;
}

.ind-product-card {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 14px 18px;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  transition: var(--ease);
  text-decoration: none;
  color: inherit;
}

.ind-product-card:hover {
  border-color: var(--navy-400);
  background: var(--gray-50);
}

.ind-product-cat {
  font-size: 10px;
  font-weight: 600;
  color: var(--orange-500);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.ind-product-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--navy-900);
}

@media (max-width: 600px) {
  .ind-products {
    grid-template-columns: 1fr;
  }
  .ind-header h2 {
    font-size: 17px;
  }
}

.ind-card-link { text-decoration: none; color: inherit; display: block; }
.ind-card-link:hover .ind-card { border-color: var(--navy-400); box-shadow: var(--shadow-lg); }
.logo-icon { object-fit: contain; border-radius: 6px; }