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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: #111827;
  background-color: #f3f4f6;
  line-height: 1.5;
}

/* Layout helpers */

.container {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1rem;
}

.section {
  padding: 4rem 0;
}

.section-alt {
  background-color: #e5e7eb;
}

.section h2 {
  font-size: clamp(1.75rem, 2.4vw, 2.25rem);
  margin: 0 0 0.75rem;
}

.section-intro {
  max-width: 40rem;
  margin: 0 0 2rem;
  color: #4b5563;
}

/* Hero */

.site-header {
  color: #f9fafb;
}

.hero {
  position: relative;
  padding: 4.5rem 0 4rem;
  background-image: linear-gradient(
      to bottom right,
      rgba(15, 23, 42, 0.86),
      rgba(30, 64, 175, 0.85)
    ),
    url("./assets/bg_01.png");
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.hero-inner {
  text-align: left;
}

.hero-kicker {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.75rem;
  margin: 0 0 0.75rem;
  color: #cbd5f5;
}

.hero h1 {
  font-size: clamp(2.1rem, 4vw, 2.7rem);
  margin: 0 0 0.75rem;
}

.hero-subtitle {
  margin: 0 0 1.5rem;
  max-width: 34rem;
  color: #e5e7eb;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.hero-meta {
  font-size: 0.9rem;
  color: #e5e7eb;
}

/* Navigation */

.site-nav {
  background-color: #0b1120;
  border-bottom: 1px solid rgba(148, 163, 184, 0.35);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 0.75rem;
  padding-bottom: 0.75rem;
  gap: 1.5rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  color: #f9fafb;
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.1rem;
  height: 2.1rem;
  border-radius: 999px;
  background-color: #1d4ed8;
  font-weight: 600;
  font-size: 0.95rem;
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-name {
  font-weight: 600;
  font-size: 0.95rem;
}

.brand-tagline {
  font-size: 0.75rem;
  color: #9ca3af;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  color: #e5e7eb;
  text-decoration: none;
  font-size: 0.9rem;
}

.nav-links a:hover,
.nav-links a:focus-visible {
  color: #ffffff;
  text-decoration: underline;
}

/* Buttons */

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.65rem 1.4rem;
  border-radius: 999px;
  font-weight: 500;
  font-size: 0.95rem;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
}

.button-primary {
  background-color: #f97316;
  color: #111827;
  border-color: #f97316;
}

.button-primary:hover,
.button-primary:focus-visible {
  background-color: #ea580c;
  border-color: #ea580c;
}

.button-secondary {
  background-color: transparent;
  color: #f9fafb;
  border-color: rgba(249, 250, 251, 0.6);
}

.button-secondary:hover,
.button-secondary:focus-visible {
  background-color: rgba(15, 23, 42, 0.6);
}

/* Grid & cards */

.grid {
  display: grid;
  gap: 1.5rem;
}

.cards-3 {
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
}

.card {
  background-color: #ffffff;
  border-radius: 0.9rem;
  padding: 1.5rem;
  box-shadow: 0 12px 30px rgba(15, 23, 42, 0.05);
  border: 1px solid #e5e7eb;
}

.card h3 {
  margin-top: 0;
  margin-bottom: 0.5rem;
  font-size: 1.05rem;
}

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

/* Split layout */

.split {
  display: grid;
  gap: 2rem;
  align-items: center;
}

.split-text p {
  color: #4b5563;
}

.checklist {
  list-style: none;
  padding: 0;
  margin: 1rem 0 0;
}

.checklist li {
  position: relative;
  padding-left: 1.5rem;
  margin-bottom: 0.5rem;
  font-size: 0.95rem;
  color: #374151;
}

.checklist li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.45rem;
  width: 0.6rem;
  height: 0.6rem;
  border-radius: 999px;
  border: 2px solid #16a34a;
}

/* Images */

.image-frame {
  margin: 0;
  border-radius: 0.9rem;
  overflow: hidden;
  border: 1px solid #e5e7eb;
  box-shadow: 0 16px 40px rgba(15, 23, 42, 0.09);
}

.image-frame img {
  display: block;
  width: 100%;
  height: auto;
}

/* Contact */

.contact-section {
  background-color: #0b1120;
  color: #e5e7eb;
}

.contact-block {
  display: grid;
  gap: 2rem;
}

.contact-text h2 {
  margin: 0 0 0.75rem;
  font-size: clamp(1.6rem, 2.4vw, 2.1rem);
}

.contact-text p {
  margin: 0;
  color: #d1d5db;
}

.contact-details dl {
  margin: 0;
  display: grid;
  gap: 0.9rem;
}

.contact-details dt {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #9ca3af;
}

.contact-details dd {
  margin: 0.15rem 0 0;
  font-size: 0.95rem;
}

.contact-details a {
  color: #bfdbfe;
  text-decoration: none;
}

.contact-details a:hover,
.contact-details a:focus-visible {
  text-decoration: underline;
}

/* Footer */

.site-footer {
  background-color: #020617;
  color: #9ca3af;
  padding: 1.5rem 0 2rem;
  font-size: 0.85rem;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  text-align: center;
}

.footer-meta {
  color: #6b7280;
}

/* Responsive */

@media (min-width: 640px) {
  .hero {
    padding: 5.5rem 0 4.5rem;
  }

  .hero-inner {
    text-align: left;
  }
}

@media (min-width: 768px) {
  .split {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
  }

  .contact-block {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
  }
}

@media (max-width: 720px) {
  .nav-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .nav-links {
    flex-wrap: wrap;
    justify-content: flex-start;
  }
}