:root {
  --brand-blue: #0055a3;
  --brand-blue-dark: #003d75;
  --brand-navy: #1e293e;
  --brand-gray: #6d6d6e;
  --light-gray: #f4f6f8;
  --border-gray: #e3e7eb;
  --white: #ffffff;
  --font-heading: 'IBM Plex Sans', sans-serif;
  --font-body: 'Poppins', sans-serif;
}

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

body {
  font-family: var(--font-body);
  color: var(--brand-navy);
  background: var(--white);
  line-height: 1.6;
}

h1, h2, h3 {
  font-family: var(--font-heading);
  line-height: 1.2;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */
.site-header {
  border-bottom: 1px solid var(--border-gray);
  background: var(--white);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 14px;
  padding-bottom: 14px;
}

.logo {
  height: 64px;
  width: auto;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

.site-nav a {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 15px;
  color: var(--brand-navy);
  text-decoration: none;
}

.site-nav a:hover {
  color: var(--brand-blue);
}

.nav-cta {
  background: var(--brand-blue);
  color: var(--white) !important;
  padding: 10px 20px;
  border-radius: 6px;
}

.nav-cta:hover {
  background: var(--brand-blue-dark);
}

/* Hero */
.hero {
  padding: 80px 0 56px;
  text-align: center;
}

.hero-inner {
  max-width: 820px;
}

.hero-kicker {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 15px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--brand-blue);
  margin-bottom: 16px;
}

.hero h1 {
  font-size: clamp(32px, 5vw, 48px);
  font-weight: 700;
  margin-bottom: 20px;
}

.hero-copy {
  font-size: 18px;
  color: var(--brand-gray);
  margin-bottom: 32px;
}

/* Buttons */
.btn {
  display: inline-block;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 16px;
  text-decoration: none;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  transition: background 0.2s ease;
}

.btn-primary {
  background: var(--brand-blue);
  color: var(--white);
  padding: 15px 34px;
}

.btn-primary:hover {
  background: var(--brand-blue-dark);
}

/* Showcase */
.showcase {
  padding: 24px 0 72px;
}

.showcase-img {
  margin: 0 auto;
  border-radius: 12px;
}

/* Newsletter */
.newsletter {
  background: var(--light-gray);
  padding: 72px 0;
  text-align: center;
}

.newsletter-inner {
  max-width: 680px;
}

.newsletter h2 {
  font-size: clamp(28px, 4vw, 38px);
  font-weight: 700;
  margin-bottom: 10px;
}

.newsletter-sub {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 17px;
  color: var(--brand-blue);
  margin-bottom: 14px;
}

.newsletter-copy {
  color: var(--brand-gray);
  margin-bottom: 32px;
}

.newsletter-form {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

.newsletter-form input {
  font-family: var(--font-body);
  font-size: 16px;
  padding: 14px 16px;
  border: 1px solid var(--border-gray);
  border-radius: 6px;
  min-width: 220px;
  flex: 1 1 220px;
  max-width: 280px;
}

.newsletter-form input:focus {
  outline: 2px solid var(--brand-blue);
  border-color: var(--brand-blue);
}

.newsletter-success {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 20px;
  color: var(--brand-blue);
}

.newsletter-error {
  flex-basis: 100%;
  font-size: 14px;
  color: #cf2e2e;
}

/* Footer */
.site-footer {
  background: var(--brand-navy);
  color: rgba(255, 255, 255, 0.85);
  text-align: center;
  padding: 40px 0;
  font-size: 14px;
}

.footer-disclaimer {
  margin-top: 12px;
  font-size: 12.5px;
  color: rgba(255, 255, 255, 0.55);
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
}

/* Responsive */
@media (max-width: 640px) {
  .logo {
    height: 48px;
  }

  .site-nav {
    gap: 16px;
  }

  .site-nav a:not(.nav-cta) {
    display: none;
  }

  .hero {
    padding: 56px 0 40px;
  }
}