:root {
  --primary: #0a3d62;
  --accent: #00a8ff;
  --accent-dark: #0080c1;
  --bg: #f5f7fb;
  --text: #1f2d3d;
  --muted: #5c6f82;
  --light: #ffffff;
  --shadow: 0 12px 30px rgba(10, 61, 98, 0.12);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

a:hover,
a:focus {
  color: var(--accent);
}

.container {
  width: min(1100px, 90vw);
  margin: 0 auto;
}

header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(245, 247, 251, 0.95);
  box-shadow: 0 2px 15px rgba(10, 61, 98, 0.06);
  backdrop-filter: blur(6px);
}

nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--primary);
}

.brand span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: var(--light);
  font-size: 1.1rem;
}

.nav-links {
  display: flex;
  gap: 1.5rem;
  align-items: center;
  list-style: none;
}

.nav-links a {
  font-weight: 500;
  transition: color 0.3s ease;
}

.nav-links a.active {
  color: var(--accent);
}

.cta-btn {
  padding: 0.75rem 1.5rem;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  color: var(--light);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  box-shadow: 0 10px 25px rgba(0, 168, 255, 0.25);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.cta-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 30px rgba(0, 168, 255, 0.35);
}

.hero {
  position: relative;
  padding: 6rem 0 5rem;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at top right, rgba(0, 168, 255, 0.2), transparent 55%),
    radial-gradient(circle at bottom left, rgba(10, 61, 98, 0.15), transparent 50%);
  z-index: -2;
}

.hero::after {
  content: '';
  position: absolute;
  inset: 15% auto auto 55%;
  width: 320px;
  height: 320px;
  background: linear-gradient(135deg, rgba(0, 168, 255, 0.45), rgba(10, 61, 98, 0.35));
  filter: blur(90px);
  z-index: -1;
}

.hero-grid {
  display: grid;
  gap: 3rem;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  align-items: center;
}

.hero h1 {
  font-size: clamp(2.5rem, 4vw, 3.5rem);
  color: var(--primary);
  margin-bottom: 1.25rem;
  letter-spacing: -0.5px;
}

.hero p {
  margin-bottom: 1.5rem;
  color: var(--muted);
  font-size: 1.05rem;
}

.stats-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  margin-top: 2rem;
}

.stat-card {
  flex: 1 1 180px;
  background: var(--light);
  border-radius: 20px;
  padding: 1.5rem;
  box-shadow: var(--shadow);
}

.stat-card h3 {
  font-size: 2rem;
  color: var(--primary);
}

.stat-card span {
  color: var(--muted);
  font-weight: 500;
}

.section {
  padding: 5rem 0;
}

.section-title {
  text-transform: uppercase;
  font-size: 0.85rem;
  letter-spacing: 2px;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 1rem;
}

.section-heading {
  font-size: clamp(2rem, 3.5vw, 2.75rem);
  margin-bottom: 2rem;
  color: var(--primary);
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
}

.card {
  background: var(--light);
  border-radius: 20px;
  padding: 2rem;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 1rem;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
  transform: translateY(-6px);
  box-shadow: 0 18px 35px rgba(10, 61, 98, 0.15);
}

.card h3 {
  color: var(--primary);
  font-size: 1.4rem;
}

.card p {
  color: var(--muted);
}

.card ul {
  margin-top: 1rem;
  padding-left: 1.1rem;
  display: grid;
  gap: 0.5rem;
  color: var(--muted);
  list-style: disc;
}

.card .tag {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  background: rgba(0, 168, 255, 0.12);
  color: var(--accent);
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.8rem;
}

.card-footer {
  margin-top: auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 600;
}

.card-footer a {
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
}

.highlight {
  background: linear-gradient(135deg, rgba(0, 168, 255, 0.12), rgba(10, 61, 98, 0.08));
  border: 1px solid rgba(0, 168, 255, 0.2);
}

.about-grid,
.contact-grid,
.sourcing-grid {
  display: grid;
  gap: 2.5rem;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  align-items: start;
}

.timeline {
  border-left: 3px solid rgba(10, 61, 98, 0.12);
  padding-left: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
}

.timeline-item h4 {
  color: var(--primary);
  margin-bottom: 0.35rem;
}

.badge-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.badge {
  background: var(--light);
  border: 1px solid rgba(10, 61, 98, 0.15);
  border-radius: 999px;
  padding: 0.35rem 0.9rem;
  font-weight: 600;
  font-size: 0.8rem;
  color: var(--muted);
}

.download-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.download-item {
  background: var(--light);
  padding: 1.1rem 1.25rem;
  border-radius: 16px;
  box-shadow: var(--shadow);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  transition: transform 0.3s ease;
}

.download-item:hover {
  transform: translateY(-4px);
}

.download-item span {
  font-weight: 600;
  color: var(--primary);
}

.download-item small {
  color: var(--muted);
  display: block;
}

.media-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.75rem;
  align-items: stretch;
}

.media-card {
  background: var(--light);
  border-radius: 24px;
  overflow: hidden;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
}

.media-card img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.media-card figcaption {
  padding: 1.25rem 1.5rem 1.5rem;
  color: var(--muted);
  font-weight: 500;
}

.sourcing-card {
  display: grid;
  gap: 1rem;
}

.step-list {
  display: grid;
  gap: 1rem;
}

.step {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}

.step-number {
  width: 36px;
  height: 36px;
  border-radius: 12px;
  background: rgba(10, 61, 98, 0.12);
  color: var(--primary);
  font-weight: 700;
  display: grid;
  place-items: center;
  flex-shrink: 0;
}

.faq {
  display: grid;
  gap: 1rem;
}

.faq-item {
  background: var(--light);
  border-radius: 16px;
  padding: 1.35rem;
  box-shadow: var(--shadow);
}

.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 600;
  cursor: pointer;
  color: var(--primary);
}

.faq-answer {
  margin-top: 0.75rem;
  color: var(--muted);
  display: none;
}

.faq-item.active .faq-answer {
  display: block;
}

.contact-grid form {
  background: var(--light);
  padding: 2rem;
  border-radius: 20px;
  box-shadow: var(--shadow);
  display: grid;
  gap: 1rem;
}

input,
textarea,
select {
  width: 100%;
  padding: 0.85rem 1rem;
  border-radius: 12px;
  border: 1px solid rgba(10, 61, 98, 0.15);
  font-size: 1rem;
  font-family: inherit;
  background: #fff;
}

textarea {
  min-height: 140px;
  resize: vertical;
}

footer {
  background: var(--primary);
  color: rgba(255, 255, 255, 0.85);
  padding: 3rem 0 2rem;
}

.footer-grid {
  display: grid;
  gap: 2rem;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.footer-grid h4 {
  margin-bottom: 1rem;
  color: #fff;
}

.footer-nav {
  display: grid;
  gap: 0.6rem;
}

.footer-nav a {
  color: rgba(255, 255, 255, 0.8);
}

.footer-bottom {
  margin-top: 2.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.65);
}

.social {
  display: flex;
  gap: 0.75rem;
}

.social a {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.12);
  display: grid;
  place-items: center;
  color: #fff;
  transition: background 0.3s ease;
}

.social a:hover {
  background: rgba(255, 255, 255, 0.25);
}

.table {
  width: 100%;
  border-collapse: collapse;
  background: var(--light);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow);
}

.table thead {
  background: rgba(10, 61, 98, 0.08);
  color: var(--primary);
}

.table th,
.table td {
  padding: 1rem;
  text-align: left;
  border-bottom: 1px solid rgba(10, 61, 98, 0.1);
}

.tag-group {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.hero-image {
  position: relative;
  background: linear-gradient(135deg, rgba(0, 168, 255, 0.6), rgba(10, 61, 98, 0.6));
  border-radius: 30px;
  min-height: 320px;
  display: grid;
  place-items: center;
  color: #fff;
  padding: 2rem;
  overflow: hidden;
}

.hero-image::after {
  content: '';
  position: absolute;
  inset: 20% 10% auto;
  height: 2px;
  background: rgba(255, 255, 255, 0.45);
}

.hero-image p {
  font-size: 1.05rem;
  text-align: center;
}

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  color: var(--accent);
  font-weight: 600;
}

.breadcrumbs {
  font-size: 0.9rem;
  color: var(--muted);
  margin-bottom: 1.5rem;
}

.page-hero {
  padding: 4.5rem 0 3rem;
  background: linear-gradient(135deg, rgba(10, 61, 98, 0.08), rgba(0, 168, 255, 0.15));
  margin-bottom: 3rem;
}

.page-hero h1 {
  font-size: clamp(2.2rem, 3.5vw, 3rem);
  color: var(--primary);
  margin-bottom: 1rem;
}

.page-hero p {
  max-width: 720px;
  color: var(--muted);
}

.product-detail {
  background: var(--light);
  border-radius: 24px;
  padding: 2rem;
  box-shadow: var(--shadow);
  display: grid;
  gap: 1.5rem;
}

.spec-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.25rem;
}

.spec-card {
  background: rgba(10, 61, 98, 0.06);
  border-radius: 16px;
  padding: 1rem 1.25rem;
}

.spec-card h4 {
  color: var(--primary);
  margin-bottom: 0.5rem;
}

.spec-card ul {
  list-style: none;
  display: grid;
  gap: 0.4rem;
  color: var(--muted);
}

.alert {
  background: rgba(0, 168, 255, 0.12);
  border-left: 4px solid var(--accent);
  padding: 1rem 1.25rem;
  border-radius: 16px;
  color: var(--muted);
}

.testimonial {
  background: var(--light);
  border-radius: 20px;
  padding: 2rem;
  box-shadow: var(--shadow);
  display: grid;
  gap: 1rem;
}

.testimonial cite {
  font-weight: 600;
  color: var(--primary);
}

.mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  cursor: pointer;
}

.mobile-toggle span {
  width: 28px;
  height: 3px;
  background: var(--primary);
  border-radius: 999px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

@media (max-width: 900px) {
  .nav-links {
    position: fixed;
    inset: 0 0 auto auto;
    flex-direction: column;
    align-items: flex-start;
    padding: 4.5rem 2rem 2rem;
    background: var(--light);
    width: min(280px, 80vw);
    height: 100vh;
    transform: translateX(100%);
    box-shadow: -4px 0 20px rgba(10, 61, 98, 0.1);
    transition: transform 0.3s ease;
  }

  .nav-links.open {
    transform: translateX(0);
  }

  .mobile-toggle {
    display: flex;
  }
}

@media (max-width: 600px) {
  .hero {
    padding: 5rem 0 4rem;
  }

  .stat-card {
    border-radius: 16px;
  }

  .section {
    padding: 4rem 0;
  }

  .card,
  .product-detail,
  .contact-grid form {
    padding: 1.5rem;
  }
}