* {
  box-sizing: border-box;
}

:root {
  color-scheme: light;
  --bg: #f4fafc;
  --panel: #ffffff;
  --text: #0a2b3f;
  --muted: #596b78;
  --teal: #108b88;
  --navy: #063149;
  --sky: #62c5dc;
  --soft: #e4f6f5;
  --line: rgba(10, 43, 63, 0.12);
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

a {
  color: var(--teal);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 5;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 14px clamp(18px, 5vw, 64px);
  background: rgba(244, 250, 252, 0.94);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(18px);
}

.brand-link {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--text);
  text-decoration: none;
}

.brand-link img {
  width: 54px;
  height: 54px;
  object-fit: contain;
}

.brand-link strong,
.brand-link small {
  display: block;
}

.brand-link strong {
  line-height: 1.1;
}

.brand-link small {
  color: var(--muted);
  font-weight: 700;
}

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  font-weight: 800;
}

nav a {
  color: var(--muted);
  text-decoration: none;
}

nav a:hover {
  color: var(--teal);
}

.hero {
  min-height: 74vh;
  display: grid;
  align-items: center;
  padding: clamp(48px, 8vw, 96px) clamp(20px, 6vw, 88px);
  background:
    linear-gradient(90deg, rgba(6, 49, 73, 0.97), rgba(16, 139, 136, 0.82)),
    url("./brand-mark.png") right clamp(24px, 8vw, 96px) center / min(42vw, 430px) no-repeat;
  color: white;
}

.hero-copy {
  max-width: 760px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--teal);
  font-size: 0.82rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero .eyebrow {
  color: #c3fbf6;
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.08;
}

h1 {
  font-size: clamp(3.3rem, 10vw, 7.4rem);
  letter-spacing: 0;
}

h2 {
  font-size: clamp(2rem, 4vw, 3.6rem);
}

h3 {
  font-size: 1.32rem;
}

p,
li {
  color: var(--muted);
}

.hero p {
  max-width: 680px;
  color: rgba(255, 255, 255, 0.88);
  font-size: 1.12rem;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 13px 18px;
  border-radius: 12px;
  background: white;
  color: var(--navy);
  font-weight: 900;
  text-decoration: none;
}

.button.secondary {
  background: rgba(255, 255, 255, 0.16);
  color: white;
  border: 1px solid rgba(255, 255, 255, 0.28);
}

.button.dark {
  background: var(--navy);
  color: white;
}

.section {
  padding: clamp(44px, 7vw, 88px) clamp(20px, 6vw, 88px);
}

.section-heading {
  max-width: 860px;
  margin-bottom: 28px;
}

.section-heading p {
  font-size: 1.06rem;
}

.feature-grid,
.boundary-grid,
.link-grid {
  display: grid;
  gap: 18px;
}

.feature-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.boundary-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.feature-grid article,
.boundary-grid article,
.panel,
.hero,
.link-grid a {
  border-radius: 8px;
}

.feature-grid article,
.boundary-grid article,
.panel,
.link-grid a {
  background: var(--panel);
  border: 1px solid var(--line);
}

.feature-grid article,
.boundary-grid article {
  padding: 22px;
}

.feature-grid span {
  display: inline-flex;
  margin-bottom: 18px;
  color: var(--teal);
  font-weight: 950;
}

.safety-band {
  background: #e8f5f7;
}

.link-section,
.contact-section {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 420px);
  gap: 24px;
  align-items: center;
}

.link-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.link-grid a {
  padding: 18px;
  color: var(--navy);
  font-weight: 900;
  text-decoration: none;
}

.link-grid a:hover {
  border-color: rgba(16, 139, 136, 0.5);
  color: var(--teal);
}

.shell {
  max-width: 900px;
  margin: 0 auto;
  padding: 32px 20px 64px;
}

.panel {
  padding: 28px;
  box-shadow: 0 20px 40px rgba(31, 91, 142, 0.06);
}

.stack {
  display: grid;
  gap: 18px;
  margin-top: 20px;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 20px 0 0;
}

.nav a,
.button {
  text-decoration: none;
}

.nav a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 16px;
  border-radius: 12px;
  background: var(--navy);
  color: white;
  font-weight: 800;
}

.nav a.secondary {
  background: var(--soft);
  color: var(--navy);
}

.grid {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  margin-top: 20px;
}

.card {
  padding: 18px;
  border-radius: 8px;
  background: #f8fbfe;
  border: 1px solid var(--line);
}

.meta,
.footer {
  color: var(--muted);
  font-size: 0.95rem;
}

.footer {
  margin-top: 28px;
}

@media (max-width: 900px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .hero {
    background:
      linear-gradient(180deg, rgba(6, 49, 73, 0.98), rgba(16, 139, 136, 0.86)),
      url("./brand-mark.png") right 18px bottom 18px / 190px no-repeat;
  }

  .feature-grid,
  .boundary-grid,
  .link-section,
  .contact-section {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 560px) {
  .link-grid {
    grid-template-columns: 1fr;
  }

  .shell {
    padding: 20px 14px 48px;
  }

  .panel {
    padding: 22px;
  }
}