/* ===== Reset & Base ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "Segoe UI", Arial, Helvetica, sans-serif;
  color: #1a1a2e;
  background: #f4f6f9;
  line-height: 30px;
  font-size: 16px;
}
a { color: #1a3a6b; text-decoration: none; }
a:hover { color: #8b1a1a; }

.page-width {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== Top Bar ===== */
.topbar {
  background: #0d1b3e;
  color: #c8d1e0;
  font-size: 14px;
  padding: 8px 0;
}
.topbar-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}
.topbar a { color: #8fa8cc; margin-right: 16px; }
.topbar a:hover { color: #fff; }

/* ===== Navbar ===== */
.navbar {
  background: #fff;
  border-bottom: 3px solid #1a3a6b;
  padding: 14px 0;
  position: sticky;
  top: 0;
  z-index: 100;
}
.navbar-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}
.brand {
  font-size: 22px;
  font-weight: 800;
  color: #1a3a6b;
  letter-spacing: -0.5px;
}
.brand span { color: #8b1a1a; }
.nav-links { display: flex; gap: 24px; flex-wrap: wrap; }
.nav-links a {
  font-size: 14px;
  font-weight: 600;
  color: #1a3a6b;
  padding: 4px 0;
  border-bottom: 2px solid transparent;
}
.nav-links a:hover,
.nav-links a.active {
  border-bottom-color: #8b1a1a;
  color: #8b1a1a;
}

/* ===== Hero ===== */
.hero {
  background: linear-gradient(135deg, #0d1b3e 0%, #1a3a6b 60%, #2a5090 100%);
  color: #fff;
  padding: 56px 0 48px;
}
.hero h1 {
  font-size: 34px;
  font-weight: 800;
  margin-bottom: 12px;
  letter-spacing: -0.5px;
  text-align: center;
}
.hero .subtitle {
  font-size: 16px;
  color: #b8c9e4;
  margin-bottom: 24px;
}
.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.hero-tag {
  background: rgba(139, 26, 26, 0.85);
  color: #fff;
  padding: 5px 16px;
  border-radius: 3px;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

/* ===== Breadcrumb ===== */
.breadcrumb {
  padding: 14px 0;
  font-size: 14px;
  color: #6b7a94;
}
.breadcrumb a { color: #1a3a6b; }
.breadcrumb span { margin: 0 6px; }

/* ===== Section ===== */
.section { padding: 52px 0; }
.section-alt { background: #fff; }
.section-dark { background: #0d1b3e; color: #c8d1e0; }
.section-dark h2, .section-dark h3 { color: #fff; }
.section-blue { background: #1a3a6b; color: #fff; }
.section-blue h2 { color: #fff; }
.section-blue .section-subtitle { color: #b8c9e4; }

.section-title {
  font-size: 26px;
  font-weight: 800;
  color: #1a3a6b;
  margin-bottom: 8px;
  letter-spacing: -0.3px;
}
.section-dark .section-title,
.section-blue .section-title { color: #fff; }
.section-subtitle {
  font-size: 15px;
  color: #5a6a84;
  margin-bottom: 32px;
  max-width: 680px;
}
.section-dark .section-subtitle { color: #8fa8cc; }
.section-divider {
  width: 48px;
  height: 3px;
  background: #8b1a1a;
  margin-bottom: 18px;
  border: none;
}
.txt-center { text-align: center; }

/* ===== Related Products ===== */
.rp-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.rp-card {
  background: #fff;
  border: 1px solid #dde3ee;
  overflow: hidden;
}
.rp-card .card-image {
  width: 100%;
  aspect-ratio: 1/1;
  background: #e8ecf2;
  overflow: hidden;
}
.rp-card .card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.rp-card .card-content {
  padding: 14px 16px 18px;
}
.rp-card .card-title {
  font-size: 14px;
  font-weight: 700;
  color: #1a1a2e;
  margin-bottom: 6px;
  line-height: 2;
}
.rp-card .card-title a {
  color: #1a1a2e;
  text-decoration: none;
}
.rp-card .card-title a:hover { color: #8b1a1a; }
.rp-card .card-link {
  font-size: 14px;
  font-weight: 600;
  color: #1a3a6b;
}
.rp-card .card-link:hover { color: #8b1a1a; }

/* ===== Introduction ===== */
.intro-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 36px;
  align-items: start;
}
.intro-text p { margin-bottom: 14px; color: #2d3a50; font-size: 14px;
    line-height: 2;}
.intro-highlight {
  background: #f0f4fa;
  border-left: 4px solid #1a3a6b;
  padding: 18px 22px;
  margin-top: 18px;
}
.intro-highlight h4 {
  color: #1a3a6b;
  font-size: 15px;
  margin-bottom: 6px;
}

/* ===== Spec Table ===== */
.spec-table-wrap { overflow-x: auto; }
.spec-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  min-width: 540px;
}
.spec-table th {
  background: #1a3a6b;
  color: #fff;
  text-align: left;
  padding: 13px 20px;
  font-weight: 700;
  white-space: nowrap;
}
.spec-table td {
  padding: 11px 20px;
  border-bottom: 1px solid #dde3ee;
  color: #2d3a50;
}
.spec-table tr:nth-child(even) td { background: #f7f9fc; }
.spec-table tr:hover td { background: #eaeff7; }

/* ===== Applications ===== */
.app-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 18px;
}
.app-card {
  background: #fff;
  border: 1px solid #dde3ee;
  border-top: 3px solid #1a3a6b;
  padding: 22px 18px;
}
.app-card h4 {
  font-size: 16px;
  font-weight: 700;
  color: #1a3a6b;
  margin-bottom: 6px;
  line-height: 30px;
}
.app-card p { font-size: 14px; color: #5a6a84; line-height: 2;}

/* ===== Advantages ===== */
.adv-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
}
.adv-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 16px 14px;
  background: #f0f4fa;
}
.adv-icon {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  background: #1a3a6b;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 15px;
}
.adv-item h4 {
  font-size: 16px;
  font-weight: 700;
  color: #1a3a6b;
  margin-bottom: 3px;
  line-height: 30px;
}
.adv-item p { font-size: 14px; color: #5a6a84;line-height: 2; }

/* ===== Payment & Shipping ===== */
.pay-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
}
.pay-box h4 {
  font-size: 15px;
  font-weight: 700;
  color: #1a3a6b;
  margin-bottom: 10px;
  padding-bottom: 8px;
  border-bottom: 2px solid #e4e9f2;
}
.pay-list { list-style: none; }
.pay-list li {
  padding: 6px 0;
  font-size: 14px;
  color: #2d3a50;
  border-bottom: 1px dashed #e4e9f2;
  line-height: 2;
}
.pay-list li:last-child { border-bottom: none; }

/* ===== FAQ ===== */

.faq-item {
  border: 1px solid #dde3ee;
  margin-bottom: 8px;
  background: #fff;
  transition: all 0.35s ease;
}
.faq-q {
  padding: 14px 18px;
  font-weight: 700;
  font-size: 14px;
  color: #1a3a6b;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  user-select: none;
}
.faq-q::after {
  content: "+";
  font-size: 20px;
  font-weight: 400;
  color: #8b1a1a;
  transition: transform 0.35s ease;
}
.faq-item.open .faq-q::after {
  content: "-";
  transform: rotate(180deg);
}
.faq-a {
  padding: 0 18px;
  max-height: 0;
  overflow: hidden;
  font-size: 14px;
  color: #3a4a64;
  line-height: 2;
  transition: max-height 0.35s ease, padding 0.35s ease;
}
.faq-item.open .faq-a {
  padding: 0 18px 16px;
  max-height: 600px;
}


/* ===== Commercial ===== */
.comm-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 14px;
}
.comm-item {
  background: #f0f4fa;
  padding: 18px 14px;
  text-align: center;
}
.comm-label {
  font-size: 11px;
  font-weight: 700;
  color: #5a6a84;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 5px;
}
.comm-value {
  font-size: 15px;
  font-weight: 800;
  color: #1a3a6b;
}

/* ===== Highlights Cards ===== */
.hl-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 18px;
}
.hl-card {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  padding: 22px 18px;
}
.hl-card h4 {
  font-size: 16px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 6px;
  line-height: 30px;
}
.hl-card p { font-size: 14px; color: #8fa8cc; line-height: 2;}

/* ===== Safety ===== */
.safety-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
}
.safety-box {
  background: #f7f9fc;
  padding: 26px 22px;
  border-left: 4px solid #8b1a1a;
}
.safety-box h4 {
  font-size: 15px;
  font-weight: 700;
  color: #8b1a1a;
  margin-bottom: 8px;
}
.safety-box p, .safety-box ul {
  font-size: 14px;
  color: #2d3a50;
  line-height: 2;
}
.safety-box ul { margin-top: 6px; padding-left: 18px; }
.safety-box li { margin-bottom: 3px; }

/* ===== Compare Table ===== */
.compare-table-wrap { overflow-x: auto; }
.compare-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  min-width: 600px;
  line-height: 2;
}
.compare-table th {
  background: #8b1a1a;
  color: #fff;
  padding: 11px 16px;
  text-align: left;
  font-weight: 700;
}
.compare-table td {
  padding: 11px 16px;
  border-bottom: 1px solid #dde3ee;
  color: #2d3a50;
}
.compare-table tr:nth-child(even) td { background: #f7f9fc; }
.compare-highlight { background: #e8f0e8 !important; font-weight: 700; }

/* ===== TCO ===== */
.tco-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 18px;
}
.tco-item {
  background: #fff;
  padding: 22px 18px;
  border: 1px solid #dde3ee;
}
.tco-item h4 {
  font-size: 14px;
  font-weight: 700;
  color: #1a3a6b;
  margin-bottom: 6px;
  line-height: 2;
}
.tco-item p { font-size: 14px; color: #5a6a84;   line-height: 2;}

/* ===== Green Cards ===== */
.green-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 18px;
}
.green-card {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  padding: 22px 18px;
  border-top: 3px solid #2e7d32;
}
.green-card h4 { font-size: 16px; font-weight: 700; color: #a5d6a7; margin-bottom: 6px;  line-height: 30px;}
.green-card p { font-size: 14px; color: #8fa8cc;  line-height: 2;}

/* ===== About Company ===== */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 36px;
  align-items: start;
}
.about-text p { margin-bottom: 14px; color: #2d3a50; font-size: 14px;     line-height: 2;}
.about-text a:hover { color: #8b1a1a; border-bottom-color: #8b1a1a; }

/* ===== Stats ===== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 32px;
}
.stat-box {
  text-align: center;
  padding: 28px 16px;
  background: #f0f4fa;
}
.stat-num {
  font-size: 38px;
  font-weight: 800;
  color: #1a3a6b;
  line-height: 1.2;
}
.stat-num sub, .stat-num span {
  font-size: 16px;
  font-weight: 600;
}
.stat-label {
  font-size: 14px;
  color: #5a6a84;
  margin-top: 6px;
  font-weight: 600;
}

/* ===== We Can Offer ===== */
.offer-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.offer-card {
  background: #fff;
  padding: 32px 24px;
  border-top: 4px solid #1a3a6b;
  text-align: center;
}
.offer-card-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 18px;
  background: #f0f4fa;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  font-weight: 800;
  color: #1a3a6b;
}
.offer-card h4 {
  font-size: 17px;
  font-weight: 700;
  color: #1a3a6b;
  margin-bottom: 10px;
}
.offer-card p {
  font-size: 14px;
  color: #5a6a84;
  line-height: 2;
}
/* ===== Carousel Base ===== */
.carousel-container {
  position: relative;
  overflow: hidden;
  padding: 0 44px;
}
.carousel-track {
  display: flex;
  transition: transform 0.35s ease-out;
  will-change: transform;
}
.carousel-slide {
  flex: 0 0 auto;
}
.carousel-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 32px;
  height: 32px;
  background: #1a3a6b;
  color: #fff;
  border: none;
  border-radius: 2px;
  cursor: pointer;
  font-size: 16px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 5;
  line-height: 2;
}
.carousel-btn:hover {
  background: #8b1a1a;
}
.carousel-btn-prev { left: 0; }
.carousel-btn-next { right: 0; }

/* ===== Certificate Carousel ===== */
.cert-slide { width: 25%; padding: 0 8px; }
.cert-item {
  background: #fff;
  border: 1px solid #dde3ee;
  aspect-ratio: 1/1;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.cert-item a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
}
.cert-item img {
  max-width: 90%;
  max-height: 90%;
  object-fit: contain;
}

/* ===== Partner Carousel ===== */
.partner-slide { width: 14.28%; padding: 0 6px; }
.partner-item {
  background: #fff;
  border: 1px solid #e4e9f2;
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding: 10px;
}
.partner-item a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
}
.partner-item img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  display: block;
}


/* ===== Related Information ===== */
.info-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.related-info-item {
  background: #fff;
  border: 1px solid #dde3ee;
  padding: 20px 18px;
  border-left: 3px solid #1a3a6b;
  list-style: none;
}
.related-info-item h3 {
  font-size: 14px;
  font-weight: 700;
  color: #1a3a6b;
  margin-bottom: 6px;
  line-height: 2;
}
.related-info-item h3 a { color: #1a3a6b; }
.related-info-item h3 a:hover { color: #8b1a1a; }
.related-info-item p {
  font-size: 14px;
  color: #5a6a84;
  line-height: 2;
}

/* ===== CTA ===== */
.cta-bar {
  background: #8b1a1a;
  color: #fff;
  padding: 36px 0;
  text-align: center;
}
.cta-bar h2 {
  font-size: 22px;
  font-weight: 800;
  margin-bottom: 8px;
}
.cta-bar p {
  font-size: 15px;
  color: #e8c4c4;
  margin-bottom: 22px;
}
.cta-btn {
  display: inline-block;
  background: #fff;
  color: #8b1a1a;
  font-weight: 700;
  font-size: 15px;
  padding: 11px 32px;
  border-radius: 3px;
}
.cta-btn:hover { background: #1a3a6b; color: #fff; }

/* ===== Footer ===== */
.footer {
  background: #0a1228;
  color: #6b7a94;
  padding: 36px 0 22px;
  font-size: 14px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 28px;
  margin-bottom: 24px;
}
.footer h5 { color: #c8d1e0; font-size: 14px; font-weight: 700; margin-bottom: 10px; }
.footer a { color: #6b7a94; }
.footer a:hover { color: #b8c9e4; }
.footer-links { list-style: none; }
.footer-links li { margin-bottom: 4px; }
.footer-bottom {
  border-top: 1px solid #1a2744;
  padding-top: 16px;
  text-align: center;
  color: #4a5a74;
}

/* ===== Responsive ===== */
@media (max-width: 960px) {
  .rp-grid { grid-template-columns: repeat(1, 1fr); }
  .cert-slide { width: 33.33%; }
  .partner-slide { width: 25%; }
}
@media (max-width: 900px) {
  .intro-grid,
  .about-grid,
  .pay-grid,
  .safety-grid { grid-template-columns: 1fr; }
  .hero h1 { font-size: 26px; }
  .footer-grid { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .stats-grid { grid-template-columns: repeat(1, 1fr); }
  .offer-grid { grid-template-columns: 1fr; }
  .info-grid { grid-template-columns: 1fr; }
  .cert-slide { width: 50%; }
  .partner-slide { width: 33.33%; }
}
@media (max-width: 600px) {
  .rp-grid { grid-template-columns: repeat(1, 1fr); }
  .cert-slide { width: 100%; }
  .partner-slide { width: 50%; }
  .nav-links { gap: 12px; }
  .hero h1 { font-size: 22px; }
  .section { padding: 32px 0; }
  .section-title { font-size: 20px; line-height: 1.8;}
}