/* ---- Base ---- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: #111827;
  background: #f3f4f6;
}

a {
  color: #2563eb;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

/* ---- Layout ---- */
header {
  background: #020617;
  color: #e5e7eb;
  border-bottom: 1px solid #111827;
}

.header-inner {
  max-width: 960px;
  margin: 0 auto;
  padding: 0.5rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.logo-group {
  display: flex;
  align-items: center;
  gap: 0.45rem;
}

.logo-group img {
  height: 16px;
  width: auto;
  display: block;
}

.site-title {
  font-size: 0.8rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: #e5e7eb;
  white-space: nowrap;
}

/* ---- Nav ---- */
nav {
  display: flex;
  gap: 1rem;
  font-size: 0.9rem;
}

nav a {
  color: #9ca3af;
  padding-bottom: 0.2rem;
  border-bottom: 2px solid transparent;
}

nav a:hover {
  color: #e5e7eb;
}

nav a.active {
  color: #e5e7eb;
  border-color: #22c55e;
}

/* ---- Main ---- */
main {
  padding: 2.5rem 1.25rem 3rem;
}

.main-inner {
  max-width: 960px;
  margin: 0 auto;
  background: #ffffff;
  padding: 2rem 1.75rem 2.25rem;
  border-radius: 0.75rem;
  box-shadow: 0 10px 25px rgba(15, 23, 42, 0.06);
}

.badge {
  display: inline-flex;
  align-items: center;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  padding: 0.2rem 0.5rem;
  border-radius: 999px;
  background: #ecfeff;
  color: #0369a1;
  border: 1px solid #e0f2fe;
  margin-bottom: 0.6rem;
}

h1 {
  margin: 0 0 0.6rem;
  font-size: 1.75rem;
  color: #020617;
}

h2 {
  margin-top: 1.75rem;
  margin-bottom: 0.4rem;
  font-size: 1.1rem;
  color: #0f172a;
}

h3 {
  margin-top: 1.2rem;
  margin-bottom: 0.35rem;
  font-size: 1rem;
  color: #111827;
}

h4 {
  margin-top: 0.9rem;
  margin-bottom: 0.25rem;
  font-size: 0.95rem;
  color: #111827;
}

.lead {
  font-size: 0.98rem;
  color: #4b5563;
  margin-bottom: 1.25rem;
}

.section p {
  margin: 0.35rem 0;
  font-size: 0.95rem;
  color: #4b5563;
}

.section ul {
  margin-top: 0.2rem;
  margin-bottom: 0.6rem;
  padding-left: 1.25rem;
  color: #4b5563;
  font-size: 0.95rem;
}

/* Product card */
.product-card {
  border: 1px solid #e5e7eb;
  border-radius: 0.75rem;
  padding: 1.25rem 1.4rem 1.35rem;
  margin-top: 1rem;
  margin-bottom: 1.5rem;
  background: #f9fafb;
}

.product-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 0.3rem;
}

.product-card h2 {
  margin: 0;
}

.tag {
  font-size: 0.7rem;
  padding: 0.2rem 0.5rem;
  border-radius: 999px;
  background: #cffafe;
  color: #0e7490;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.product-links {
  margin-top: 0.6rem;
  font-size: 0.9rem;
}

.product-links .separator {
  margin: 0 0.35rem;
  color: #9ca3af;
}

.muted {
  font-size: 0.88rem;
  color: #6b7280;
}

.contact-line {
  margin-top: 0.2rem;
}

/* ---- Footer ---- */
footer {
  border-top: 1px solid #e5e7eb;
  padding: 1rem 1.25rem 1.5rem;
  font-size: 0.8rem;
  color: #6b7280;
  text-align: center;
}

/* ---- Responsive ---- */
@media (max-width: 640px) {
  .header-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  nav {
    width: 100%;
    justify-content: flex-start;
    flex-wrap: wrap;
  }

  .product-header {
    flex-direction: column;
    align-items: flex-start;
  }
}