/* ============================================
   DUDI NEW MATERIALS — Design System
   Silicone Sealant B2B Website
   ============================================ */

/* Design Tokens */
:root {
  --primary: #0a2e5c;
  --primary-light: #155697;
  --primary-dark: #06203f;
  --accent: #f59e0b;
  --accent-dark: #d97706;
  --text: #1a1a2e;
  --text-muted: #64748b;
  --bg-light: #f5f6fa;
  --border: #e2e5ec;
  --white: #ffffff;
  --font: 'Inter', 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --container: 1200px;
  --radius: 8px;
  --radius-lg: 14px;
  --shadow: 0 4px 16px rgba(10,46,92,0.07);
  --shadow-lg: 0 16px 48px rgba(10,46,92,0.14);
  --transition: all 0.3s ease;
}

/* Reset & Base */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
ul, ol { list-style: none; }
button, input, textarea, select { font-family: inherit; font-size: inherit; }

/* Container */
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
  transition: var(--transition);
  border: 2px solid transparent;
  text-align: center;
}
.btn-primary {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
  color: var(--white);
  box-shadow: 0 4px 16px rgba(245,158,11,0.30);
}
.btn-primary:hover {
  background: linear-gradient(135deg, var(--accent-dark) 0%, #b45309 100%);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(245,158,11,0.35);
}
.btn-outline { background: transparent; color: var(--white); border-color: rgba(255,255,255,0.4); }
.btn-outline:hover { border-color: var(--white); background: rgba(255,255,255,0.1); }
.btn-outline-dark { background: transparent; color: var(--primary); border-color: var(--primary); }
.btn-outline-dark:hover { background: var(--primary); color: var(--white); }

/* Top Bar */
.topbar {
  background: var(--primary-dark);
  color: rgba(255,255,255,0.7);
  font-size: 13px;
  padding: 8px 0;
}
.topbar .container { display: flex; justify-content: space-between; align-items: center; }
.topbar-contact { display: flex; gap: 24px; }
.topbar-contact span { display: flex; align-items: center; gap: 6px; }
.topbar-contact a { transition: var(--transition); }
.topbar-contact a:hover { color: var(--white); }

/* Header */
.header {
  background: var(--white);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}
.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.logo {
  font-size: 24px;
  font-weight: 800;
  color: var(--primary);
  display: flex;
  align-items: center;
  gap: 10px;
}
.logo-icon {
  width: 28px;
  height: 25px;
  flex-shrink: 0;
}
.logo-accent { color: var(--accent); }
.nav { display: flex; gap: 32px; align-items: center; }
.nav a {
  font-weight: 500;
  font-size: 15px;
  color: var(--text);
  padding: 8px 0;
  position: relative;
  transition: var(--transition);
}
.nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: var(--transition);
}
.nav a:hover::after, .nav a.active::after { width: 100%; }
.nav a.active { color: var(--primary); }
.header-cta { display: flex; gap: 12px; align-items: center; }
.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}
.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--primary);
  margin: 6px 0;
  transition: var(--transition);
}

/* Hero */
.hero {
  position: relative;
  min-height: 680px;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-light) 100%);
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background: url('../images/hero/hero-bg.jpg') right center/cover no-repeat;
  opacity: 0.8;
}
.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, rgba(6,32,63,0.48) 0%, rgba(6,32,63,0.20) 48%, transparent 78%);
}
.hero-content {
  position: relative;
  z-index: 2;
  color: var(--white);
  max-width: 620px;
  padding: 96px 0 132px;
}
.hero-tag {
  display: inline-block;
  background: rgba(245,158,11,0.18);
  color: var(--accent);
  border: 1px solid rgba(245,158,11,0.35);
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 24px;
}
.hero h1 {
  font-size: 52px;
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 22px;
  letter-spacing: -0.5px;
  text-shadow: 0 2px 24px rgba(6,32,63,0.30);
}
.hero p {
  font-size: 18px;
  color: rgba(255,255,255,0.88);
  margin-bottom: 36px;
  line-height: 1.7;
  text-shadow: 0 1px 12px rgba(6,32,63,0.25);
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 16px; }
.hero-stats {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: rgba(6,32,63,0.42);
  backdrop-filter: blur(14px);
  border-top: 1px solid rgba(255,255,255,0.10);
  padding: 24px 0;
}
.hero-stats .container { display: flex; justify-content: space-between; }
.hero-stat { text-align: center; color: var(--white); }
.hero-stat-number { font-size: 32px; font-weight: 800; color: var(--accent); }
.hero-stat-label { font-size: 14px; color: rgba(255,255,255,0.7); }

/* Sections */
.section { padding: 80px 0; }
.section-light { background: var(--bg-light); }
.section-dark {
  background: linear-gradient(160deg, var(--primary-dark) 0%, var(--primary) 100%);
  color: var(--white);
}
.section-header { text-align: center; max-width: 680px; margin: 0 auto 56px; }
.section-tag {
  display: inline-block;
  position: relative;
  padding-left: 18px;
  color: var(--accent);
  font-size: 14px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 12px;
}
.section-tag::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 10px;
  height: 2px;
  background: var(--accent);
}
.section-header h2 {
  font-size: 38px;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 16px;
  letter-spacing: -0.3px;
}
.section-header p { font-size: 17px; color: var(--text-muted); line-height: 1.65; }
.section-dark .section-header h2 { color: var(--white); }
.section-dark .section-header p { color: rgba(255,255,255,0.7); }

/* Product Cards */
.products-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.product-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
}
.product-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: var(--primary-light); }
.product-card-img {
  height: 220px;
  padding: 16px;
  background: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}
.product-card-img img {
  width: auto;
  height: auto;
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  transition: transform 0.4s ease;
}
.product-card:hover .product-card-img img { transform: scale(1.05); }
.product-card-body { padding: 24px; }
.product-card-category {
  color: var(--accent);
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 8px;
}
.product-card h3 { font-size: 18px; font-weight: 700; color: var(--text); margin-bottom: 10px; line-height: 1.3; }
.product-card p { font-size: 14px; color: var(--text-muted); line-height: 1.6; margin-bottom: 16px; }
.product-card-link {
  color: var(--primary);
  font-weight: 600;
  font-size: 14px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: var(--transition);
}
.product-card-link:hover { gap: 10px; }

/* Advantages */
.three-column-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.advantages-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.advantage-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  text-align: center;
  transition: var(--transition);
}
.advantage-card:hover {
  transform: translateY(-6px);
  border-color: var(--primary-light);
  box-shadow: var(--shadow-card-hover);
}
.advantage-media {
  width: 88px;
  height: 88px;
  margin: 0 auto 20px;
  overflow: hidden;
  border: 2px solid rgba(21,86,151,0.08);
  border-radius: 20px;
  background: var(--bg-light);
  box-shadow: 0 8px 20px rgba(10,46,92,0.08);
}
.advantage-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.advantage-card:hover .advantage-media img { transform: scale(1.06); }
.advantage-icon {
  width: 64px;
  height: 64px;
  background: linear-gradient(135deg, var(--primary-light), var(--primary));
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  color: var(--white);
}
.advantage-card h3 { font-size: 18px; font-weight: 700; color: var(--text); margin-bottom: 10px; }
.advantage-card p { font-size: 14px; color: var(--text-muted); line-height: 1.6; }

/* OEM / ODM Service */
.oem-section {
  background:
    radial-gradient(circle at 86% 18%, rgba(245,158,11,0.16), transparent 34%),
    linear-gradient(135deg, #06203f 0%, var(--primary) 58%, var(--primary-light) 100%);
  color: var(--white);
  padding: 76px 0;
  overflow: hidden;
}
.oem-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: 56px;
  align-items: center;
}
.oem-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 16px;
  border: 1px solid rgba(245,158,11,0.38);
  border-radius: 20px;
  background: rgba(245,158,11,0.16);
  color: var(--accent);
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
}
.oem-copy h2 {
  font-size: 38px;
  font-weight: 800;
  line-height: 1.16;
  margin: 20px 0 16px;
  letter-spacing: -0.4px;
}
.oem-copy > p {
  max-width: 560px;
  color: rgba(255,255,255,0.82);
  font-size: 17px;
  line-height: 1.7;
  margin-bottom: 28px;
}
.oem-points {
  display: grid;
  gap: 18px;
  margin: 0 0 32px;
  padding: 0;
  list-style: none;
}
.oem-points li {
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 14px;
  align-items: start;
}
.oem-check {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(245,158,11,0.38);
  border-radius: 10px;
  background: rgba(245,158,11,0.12);
  color: var(--accent);
}
.oem-points strong { display: block; font-size: 16px; margin-bottom: 3px; }
.oem-points span:last-child { color: rgba(255,255,255,0.70); font-size: 14px; line-height: 1.55; }
.oem-actions { display: flex; flex-wrap: wrap; gap: 14px; }
.oem-media {
  position: relative;
  margin: 0;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,0.14);
  border-radius: var(--radius-lg);
  box-shadow: 0 24px 64px rgba(6,32,63,0.34);
}
.oem-media img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Factory Location */
.location-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.3fr);
  gap: 32px;
  align-items: stretch;
}
.location-details {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  min-height: 420px;
  padding: 36px;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}
.location-details h3 {
  font-size: 22px;
  line-height: 1.3;
  color: var(--text);
  margin-bottom: 18px;
}
.location-address {
  margin-bottom: 26px;
  color: var(--text-muted);
  font-size: 16px;
  line-height: 1.7;
}
.location-highlight {
  display: flex;
  flex-direction: column;
  gap: 7px;
  width: 100%;
  margin-bottom: 30px;
  padding: 20px;
  border-left: 4px solid var(--accent);
  border-radius: var(--radius);
  background: var(--bg-light);
}
.location-highlight strong {
  color: var(--text);
  font-size: 17px;
}
.location-highlight span {
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.6;
}
.map-embed {
  min-width: 0;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--bg-light);
}
.map-embed iframe {
  display: block;
  width: 100%;
  height: 480px;
  min-height: 100%;
  border: 0;
}

/* Factory Gallery */
.factory-gallery {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 48px;
}
.factory-photo {
  position: relative;
  margin: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 4 / 3;
  background: linear-gradient(135deg, #e2e8f0, #cbd5e1);
}
.factory-photo img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.factory-photo::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(6,32,63,0.72) 0%, transparent 52%);
}
.factory-photo:hover img { transform: scale(1.04); }
.factory-photo figcaption {
  position: absolute;
  z-index: 1;
  left: 20px;
  bottom: 18px;
  color: var(--white);
  font-size: 15px;
  font-weight: 600;
}

/* Partners */
.partner-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 20px;
}
.partner-card {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 132px;
  padding: 22px;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: var(--transition);
}
.partner-card:hover {
  transform: translateY(-4px);
  border-color: var(--primary-light);
  box-shadow: var(--shadow-card-hover);
}
.partner-card img {
  max-width: 100%;
  max-height: 76px;
  width: auto;
  height: auto;
  object-fit: contain;
}

/* Project References */
.project-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}
.project-card {
  min-width: 0;
  overflow: hidden;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: var(--transition);
}
.project-card:hover {
  transform: translateY(-6px);
  border-color: var(--primary-light);
  box-shadow: var(--shadow-card-hover);
}
.project-media {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: linear-gradient(135deg, #e2e8f0, #cbd5e1);
}
.project-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.project-card:hover .project-media img { transform: scale(1.045); }
.project-content {
  padding: 22px;
  border-top: 1px solid var(--border);
}
.project-category {
  display: inline-flex;
  align-items: center;
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(21, 86, 151, 0.08);
  color: var(--primary);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.project-content h3 {
  margin: 14px 0 6px;
  color: var(--text);
  font-size: 17px;
  font-weight: 700;
  line-height: 1.4;
}
.project-location {
  margin: 0;
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.5;
}

/* Applications */
.applications-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.application-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 4/3;
  display: flex;
  align-items: flex-end;
}
.application-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(6,32,63,0.85) 0%, transparent 60%);
}
.application-card img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.application-card:hover img { transform: scale(1.08); }
.application-card-body { position: relative; z-index: 2; padding: 24px; color: var(--white); }
.application-card h3 { font-size: 20px; font-weight: 700; margin-bottom: 6px; }
.application-card p { font-size: 14px; color: rgba(255,255,255,0.8); }

/* Stats */
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; text-align: center; }
.stat-item { color: var(--white); }
.stat-number { font-size: 48px; font-weight: 800; color: var(--accent); line-height: 1.2; }
.stat-label { font-size: 15px; color: rgba(255,255,255,0.7); margin-top: 8px; }

/* CTA Section */
.cta-section {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  border-radius: var(--radius-lg);
  padding: 56px;
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
}
.cta-content h2 { font-size: 32px; font-weight: 700; margin-bottom: 12px; }
.cta-content p { font-size: 16px; color: rgba(255,255,255,0.8); }
.cta-actions { display: flex; gap: 16px; flex-shrink: 0; }

/* News */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.news-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
}
.news-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.news-card-img { height: 180px; background: linear-gradient(135deg, #e2e8f0, #cbd5e1); overflow: hidden; }
.news-card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s ease; }
.news-card:hover .news-card-img img { transform: scale(1.05); }
.news-card-body { padding: 24px; }
.news-card-date { font-size: 13px; color: var(--accent); font-weight: 600; margin-bottom: 8px; }
.news-card h3 { font-size: 16px; font-weight: 700; color: var(--text); margin-bottom: 8px; line-height: 1.4; }
.news-card p { font-size: 14px; color: var(--text-muted); line-height: 1.6; }

/* Footer */
.footer { background: var(--primary-dark); color: rgba(255,255,255,0.7); padding: 64px 0 0; }
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}
.footer-brand h3 { font-size: 24px; font-weight: 800; color: var(--white); margin-bottom: 16px; }
.footer-brand p { font-size: 14px; line-height: 1.6; margin-bottom: 20px; }
.footer-col h4 { color: var(--white); font-size: 16px; font-weight: 700; margin-bottom: 20px; }
.footer-col a { display: block; font-size: 14px; padding: 6px 0; transition: var(--transition); }
.footer-col a:hover { color: var(--accent); padding-left: 4px; }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px 0;
  font-size: 13px;
}
.footer-bottom-links { display: flex; gap: 24px; }

/* Page Header (inner pages) */
.report-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.report-card {
  display: flex;
  flex-direction: column;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: var(--transition);
}
.report-card:hover { border-color: var(--primary-light); box-shadow: var(--shadow); transform: translateY(-3px); }
.report-tag {
  align-self: flex-start;
  background: rgba(21,86,151,0.08);
  color: var(--primary);
  border-radius: 20px;
  padding: 6px 14px;
  font-size: 12px;
  font-weight: 700;
  margin-bottom: 16px;
}
.report-card h3 { font-size: 18px; font-weight: 700; color: var(--text); margin-bottom: 10px; line-height: 1.35; }
.report-card p { font-size: 14px; color: var(--text-muted); line-height: 1.6; margin-bottom: 20px; }
.report-details {
  display: grid;
  gap: 10px;
  margin-top: auto;
  margin-bottom: 24px;
  padding-top: 18px;
  border-top: 1px solid var(--border);
}
.report-row { display: flex; gap: 10px; font-size: 13px; line-height: 1.5; }
.report-row dt { flex: 0 0 74px; margin: 0; font-weight: 600; color: var(--text); }
.report-row dd { margin: 0; color: var(--text-muted); }
.report-download {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  border: 1px solid var(--primary);
  border-radius: var(--radius);
  color: var(--primary);
  font-size: 14px;
  font-weight: 600;
  transition: var(--transition);
}
.report-download:hover { background: var(--primary); color: var(--white); }
.report-note {
  max-width: 820px;
  margin: 40px auto 0;
  padding: 20px 24px;
  background: var(--bg-light);
  border-left: 3px solid var(--accent);
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.7;
}
.page-header {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  color: var(--white);
  padding: 64px 0;
  text-align: center;
}
.page-header h1 { font-size: 40px; font-weight: 800; margin-bottom: 12px; }
.page-header p { font-size: 16px; color: rgba(255,255,255,0.7); max-width: 600px; margin: 0 auto; }
.breadcrumb { display: flex; gap: 8px; font-size: 14px; margin-bottom: 16px; justify-content: center; }
.breadcrumb a { color: rgba(255,255,255,0.6); }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb-sep { color: rgba(255,255,255,0.3); }

/* Contact */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}
.about-grid > * { min-width: 0; }
.about-img { width: 100%; max-width: 100%; }
.contact-grid { display: grid; grid-template-columns: 1fr 1.5fr; gap: 48px; }
.contact-info-card { background: var(--bg-light); border-radius: var(--radius-lg); padding: 32px; }
.contact-info-item { display: flex; gap: 16px; margin-bottom: 24px; }
.contact-info-icon {
  width: 48px;
  height: 48px;
  background: var(--primary);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  flex-shrink: 0;
}
.contact-info-item h4 { font-size: 16px; font-weight: 700; color: var(--text); margin-bottom: 4px; }
.contact-info-item p { font-size: 14px; color: var(--text-muted); }
.contact-form-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px;
}
.form-group { margin-bottom: 20px; }
.form-group label {
  display: block;
  font-weight: 600;
  font-size: 14px;
  color: var(--text);
  margin-bottom: 8px;
}
.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 15px;
  transition: var(--transition);
  outline: none;
  background: var(--white);
  color: var(--text);
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--primary-light);
  box-shadow: 0 0 0 3px rgba(21,86,151,0.1);
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.honeypot-field {
  position: absolute !important;
  left: -9999px !important;
  width: 1px !important;
  height: 1px !important;
  opacity: 0 !important;
  pointer-events: none !important;
}
.form-status {
  display: none;
  margin-top: 16px;
  padding: 12px 14px;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 600;
  line-height: 1.5;
}
.form-status.is-success {
  display: block;
  background: #ecfdf5;
  color: #047857;
  border: 1px solid #a7f3d0;
}
.form-status.is-error {
  display: block;
  background: #fef2f2;
  color: #b91c1c;
  border: 1px solid #fecaca;
}

/* Legal & Utility Pages */
.legal-content {
  max-width: 760px;
}
.legal-content h2 {
  font-size: 22px;
  font-weight: 700;
  color: var(--text);
  margin: 36px 0 12px;
}
.legal-content h2:first-child { margin-top: 0; }
.legal-content p {
  color: var(--text-muted);
  font-size: 15px;
  line-height: 1.75;
  margin-bottom: 14px;
}
.legal-content a { color: var(--primary-light); font-weight: 500; }
.legal-content a:hover { text-decoration: underline; }
.legal-content ul {
  list-style: disc;
  padding-left: 22px;
  margin: 0 0 14px;
}
.legal-content li {
  color: var(--text-muted);
  font-size: 15px;
  line-height: 1.75;
}
.error-page {
  text-align: center;
  padding: 96px 0;
}
.error-code {
  font-size: 96px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1;
  margin-bottom: 12px;
}
.error-page h1 { font-size: 30px; font-weight: 700; color: var(--text); margin-bottom: 12px; }
.error-page p { color: var(--text-muted); font-size: 16px; margin-bottom: 32px; }
.error-actions { display: flex; flex-wrap: wrap; gap: 14px; justify-content: center; }

/* FAQ */
.faq-container { max-width: 800px; }
.faq-group-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--text);
  margin: 40px 0 18px;
}
.faq-group-title:first-child { margin-top: 0; }
.faq-item {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  margin-bottom: 12px;
  overflow: hidden;
  transition: var(--transition);
}
.faq-item[open] {
  border-color: var(--primary-light);
  box-shadow: var(--shadow);
}
.faq-item summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 18px 22px;
  font-weight: 600;
  font-size: 15.5px;
  color: var(--text);
  transition: var(--transition);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: '+';
  font-size: 24px;
  font-weight: 400;
  color: var(--accent);
  flex-shrink: 0;
  line-height: 1;
  transition: transform 0.25s ease;
}
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item summary:hover { color: var(--primary); }
.faq-answer { padding: 0 22px 20px; }
.faq-answer p {
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 10px;
}
.faq-answer p:last-child { margin-bottom: 0; }
.faq-answer a { color: var(--primary-light); font-weight: 500; }
.faq-answer a:hover { text-decoration: underline; }
.faq-cta {
  margin-top: 56px;
  text-align: center;
  background: var(--bg-light);
  border-radius: var(--radius-lg);
  padding: 48px 24px;
}
.faq-cta h2 { font-size: 26px; font-weight: 800; color: var(--text); margin-bottom: 10px; }
.faq-cta p { color: var(--text-muted); margin-bottom: 24px; }

/* Factory Video */
.video-frame {
  max-width: 960px;
  margin: 0 auto;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--primary-dark);
  box-shadow: var(--shadow-lg);
}
.video-frame video {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
}

/* Blog / News */
.article-wrap { max-width: 780px; margin: 0 auto; }
.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
  margin-bottom: 18px;
}
.article-cat {
  display: inline-block;
  background: rgba(245,158,11,0.14);
  color: var(--accent-dark);
  border-radius: 20px;
  padding: 5px 14px;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
}
.article-date { font-size: 14px; }
.article-hero {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: var(--radius-lg);
  margin-bottom: 36px;
}
.article-body h2 { font-size: 24px; font-weight: 700; color: var(--text); margin: 38px 0 14px; }
.article-body h3 { font-size: 19px; font-weight: 700; color: var(--text); margin: 30px 0 10px; }
.article-body p { font-size: 16px; color: var(--text-muted); line-height: 1.8; margin-bottom: 16px; }
.article-body ul { list-style: disc; padding-left: 22px; margin-bottom: 16px; }
.article-body li { font-size: 15.5px; color: var(--text-muted); line-height: 1.75; margin-bottom: 6px; }
.article-body a { color: var(--primary-light); font-weight: 500; }
.article-body a:hover { text-decoration: underline; }
.article-table { overflow-x: auto; margin: 20px 0 24px; }
.article-table table { width: 100%; border-collapse: collapse; min-width: 520px; }
.article-table th {
  background: var(--primary);
  color: var(--white);
  text-align: left;
  padding: 11px 14px;
  font-size: 13px;
  letter-spacing: 0.3px;
}
.article-table td {
  padding: 11px 14px;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
  color: var(--text-muted);
  vertical-align: top;
}
.article-note { font-size: 13.5px; font-style: italic; color: var(--text-muted); }
.article-cta {
  margin-top: 48px;
  background: var(--bg-light);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  text-align: center;
}
.article-cta h2 { font-size: 24px; font-weight: 800; color: var(--text); margin-bottom: 10px; }
.article-cta p { color: var(--text-muted); margin-bottom: 22px; font-size: 15px; }
.news-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }
.news-card {
  display: flex;
  flex-direction: column;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
}
.news-card:hover {
  transform: translateY(-6px);
  border-color: var(--primary-light);
  box-shadow: var(--shadow-card-hover);
}
.news-card > img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}
.news-body { display: flex; flex-direction: column; flex: 1; padding: 22px 24px 26px; }
.news-tag {
  color: var(--accent);
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 8px;
}
.news-date { font-size: 13px; color: var(--text-muted); margin-bottom: 8px; }
.news-card h3 { font-size: 17px; font-weight: 700; line-height: 1.45; color: var(--text); margin-bottom: 10px; }
.news-card h3 a { color: inherit; }
.news-card p { font-size: 14px; color: var(--text-muted); line-height: 1.65; margin-bottom: 16px; }
.news-link {
  margin-top: auto;
  color: var(--primary);
  font-weight: 600;
  font-size: 14px;
}
.news-card:hover .news-link { color: var(--primary-light); }
body:has(.error-page) {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}
body:has(.error-page) .footer { margin-top: auto; }

/* Management System Certifications */
.certificate-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}
.certificate-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
}
.certificate-card:hover {
  transform: translateY(-6px);
  border-color: var(--primary-light);
  box-shadow: var(--shadow-card-hover);
}
.certificate-media {
  display: block;
  aspect-ratio: 3 / 4;
  overflow: hidden;
  background: var(--bg-light);
}
.certificate-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top;
  transition: transform 0.4s ease;
}
.certificate-card:hover .certificate-media img { transform: scale(1.04); }
.certificate-body { padding: 22px 24px 26px; }
.certificate-tag {
  display: inline-block;
  color: var(--accent);
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 8px;
}
.certificate-card h3 {
  font-size: 19px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 14px;
}
.certificate-details { display: grid; gap: 6px; }
.certificate-details div {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  font-size: 13px;
}
.certificate-details dt { color: var(--text-muted); white-space: nowrap; }
.certificate-details dd {
  color: var(--text);
  font-weight: 600;
  text-align: right;
  overflow-wrap: anywhere;
}
.certificate-note {
  max-width: 680px;
  margin: 32px auto 0;
  text-align: center;
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.7;
}

/* Honors */
.honor-grid {
  columns: 3;
  column-gap: 20px;
}
.honor-card {
  display: block;
  break-inside: avoid;
  margin-bottom: 20px;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
}
.honor-card:hover {
  transform: translateY(-4px);
  border-color: var(--primary-light);
  box-shadow: var(--shadow-card-hover);
}
.honor-media { display: block; background: var(--bg-light); }
.honor-media img { width: 100%; height: auto; display: block; transition: transform 0.4s ease; }
.honor-card:hover .honor-media img { transform: scale(1.03); }
.honor-body { padding: 16px 18px 20px; }
.honor-tag {
  display: inline-block;
  color: var(--accent);
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 6px;
}
.honor-card h3 {
  font-size: 15px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--text);
  margin-bottom: 6px;
}
.honor-card p { font-size: 13px; color: var(--text-muted); line-height: 1.55; }

/* WhatsApp Float */
.whatsapp-float {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 90;
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #25d366;
  color: var(--white);
  border-radius: 50%;
  box-shadow: 0 8px 24px rgba(37,211,102,0.35);
  transition: var(--transition);
}
.whatsapp-float:hover {
  transform: translateY(-3px) scale(1.05);
  box-shadow: 0 12px 32px rgba(37,211,102,0.45);
}

/* Responsive */
@media (max-width: 1024px) {
  .hero h1 { font-size: 40px; }
  .products-grid, .applications-grid, .news-grid { grid-template-columns: repeat(2, 1fr); }
  .report-grid { grid-template-columns: repeat(2, 1fr); }
  .partner-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .project-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .advantages-grid, .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .oem-layout { gap: 32px; }
  .oem-copy h2 { font-size: 32px; }
  .oem-media { min-height: 0; }
  .news-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .honor-grid { columns: 2; }
  .location-grid { grid-template-columns: 1fr; }
  .location-details { min-height: 0; }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .cta-section { flex-direction: column; text-align: center; }
}
@media (max-width: 768px) {
  .topbar-contact { display: none; }
  .menu-toggle { display: block; }
  .hero {
    display: block;
    min-height: 0;
  }
  .hero-content {
    padding: 56px 0 48px;
  }
  .hero-stats {
    position: static;
    padding: 20px 0;
  }
  .hero-stats .container {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }
  .nav {
    display: none;
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--white);
    flex-direction: column;
    padding: 24px;
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-lg);
    gap: 0;
    z-index: 99;
  }
  .nav.active { display: flex; }
  .nav a { padding: 12px 0; border-bottom: 1px solid var(--bg-light); width: 100%; }
  .header-cta .btn { display: none; }
  .hero h1 { font-size: 32px; }
  .products-grid, .applications-grid, .news-grid { grid-template-columns: 1fr; }
  .report-grid { grid-template-columns: 1fr; }
  .three-column-grid, .about-grid { grid-template-columns: 1fr; }
  .oem-section { padding: 52px 0; }
  .oem-layout { grid-template-columns: 1fr; }
  .oem-copy h2 { font-size: 28px; }
  .oem-media { min-height: 0; order: -1; }
  .factory-gallery { grid-template-columns: 1fr; }
  .partner-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
  .project-grid { grid-template-columns: 1fr; gap: 18px; }
  .project-content { padding: 18px; }
  .location-grid { gap: 18px; }
  .location-details { padding: 24px; }
  .map-embed iframe { height: 360px; }
  .partner-card { min-height: 108px; padding: 16px; }
  .partner-card img { max-height: 58px; }
  .advantages-grid, .stats-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .certificate-grid { grid-template-columns: 1fr; }
  .news-grid { grid-template-columns: 1fr; }
  .honor-grid { columns: 1; }
  .section { padding: 48px 0; }
  .section-header h2 { font-size: 28px; }
  .cta-section { padding: 32px; }
  .cta-content h2 { font-size: 24px; }
  .form-row { grid-template-columns: 1fr; }
  .whatsapp-float { right: 16px; bottom: 16px; width: 52px; height: 52px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
  .page-header h1 { font-size: 28px; }
  .stat-number { font-size: 32px; }
}

/* Animations */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}
.animate-fade-up { animation: fadeInUp 0.6s ease forwards; opacity: 0; }
.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }

/* WhatsApp floating button */
.whatsapp-float {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 999;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: #25d366;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 16px rgba(37, 211, 102, 0.4);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  text-decoration: none;
}
.whatsapp-float:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 24px rgba(37, 211, 102, 0.5);
}
.whatsapp-float svg {
  width: 32px;
  height: 32px;
  fill: #fff;
}