:root {
  --primary: #173B5E;
  --secondary: #1F6F78;
  --accent: #3ABEFF;
  --support: #7FB7A3;
  --bg: #F7FAFC;
  --surface: #FFFFFF;
  --text: #1B2E3C;
  --muted: #667A89;
  --border: #D8E3EA;
  --shadow: 0 18px 45px rgba(23, 59, 94, 0.08);
  --radius: 22px;
  --radius-sm: 16px;
  --max: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.container {
  width: min(100% - 2rem, var(--max));
  margin-inline: auto;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: auto;
  width: 1px;
  height: 1px;
  overflow: hidden;
}
.skip-link:focus {
  left: 1rem;
  top: 1rem;
  width: auto;
  height: auto;
  padding: 0.75rem 1rem;
  background: var(--primary);
  color: #fff;
  border-radius: 12px;
  z-index: 1000;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(12px);
  background: rgba(247, 250, 252, 0.88);
  border-bottom: 1px solid rgba(216, 227, 234, 0.8);
}
.site-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 78px;
  gap: 1rem;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.9rem;
  font-weight: 700;
  min-width: 0;
}
.brand-mark {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
}
.brand:hover svg {
  transform: rotate(8deg);
  transition: transform 0.3s ease;
}
.brand-mark svg g {
  filter: drop-shadow(0 0 2px rgba(58, 190, 255, 0.4));
}
.brand-copy {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}
.brand-name {
  font-size: 1.05rem;
  letter-spacing: 0.01em;
}
.brand-tagline {
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 500;
}

.nav-toggle {
  display: none;
  border: 0;
  background: transparent;
  padding: 0.35rem;
  cursor: pointer;
}
.nav-toggle-bar,
.nav-toggle-bar::before,
.nav-toggle-bar::after {
  display: block;
  width: 26px;
  height: 2px;
  background: var(--primary);
  border-radius: 999px;
  position: relative;
  transition: transform 0.25s ease, opacity 0.25s ease;
  content: "";
}
.nav-toggle-bar::before { position: absolute; top: -8px; }
.nav-toggle-bar::after { position: absolute; top: 8px; }
.nav-toggle[aria-expanded="true"] .nav-toggle-bar { background: transparent; }
.nav-toggle[aria-expanded="true"] .nav-toggle-bar::before { transform: translateY(8px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-bar::after { transform: translateY(-8px) rotate(-45deg); }

.site-nav-list {
  display: flex;
  align-items: center;
  gap: 1.35rem;
  list-style: none;
  margin: 0;
  padding: 0;
}
.site-nav-list a {
  color: var(--text);
  font-weight: 600;
  font-size: 0.96rem;
}
.site-nav-list a:hover,
.site-nav-list a:focus-visible { color: var(--secondary); }

.button,
.button-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 48px;
  padding: 0.85rem 1.2rem;
  border-radius: 999px;
  font-weight: 700;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}
.button {
  background: linear-gradient(135deg, var(--accent), #62cfff);
  color: var(--primary);
  box-shadow: 0 14px 30px rgba(58, 190, 255, 0.22);
}
.button:hover,
.button:focus-visible,
.button-secondary:hover,
.button-secondary:focus-visible {
  transform: translateY(-1px);
}
.button-secondary {
  color: var(--primary);
  border: 1px solid var(--border);
  background: rgba(255,255,255,0.8);
}
.inverse-secondary {
  color: #fff;
  background: transparent;
  border-color: rgba(255,255,255,0.35);
}

.section,
main section { padding: 5.5rem 0; }
.section-tight { padding: 4.5rem 0; }
.surface-section { background: linear-gradient(180deg, rgba(255,255,255,0.75), rgba(255,255,255,0.92)); }

.eyebrow,
.card-kicker {
  display: inline-block;
  margin-bottom: 0.9rem;
  color: var(--secondary);
  font-size: 0.84rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.09em;
}
.hero {
  padding: 6.75rem 0 5rem;
  background:
    radial-gradient(circle at top right, rgba(58, 190, 255, 0.16), transparent 30%),
    radial-gradient(circle at top left, rgba(127, 183, 163, 0.18), transparent 35%),
    var(--bg);
}

.hero-grid,
.split-grid,
.three-up,
.four-up,
.process-grid,
.footer-grid,
.stack {
  display: grid;
  gap: 1.5rem;
}
.hero-grid { grid-template-columns: 1.2fr 0.8fr; align-items: center; gap: 2rem; }
.split-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.three-up { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.four-up { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.process-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.stack { grid-template-columns: 1fr; }

h1, h2, h3 {
  margin: 0 0 0.9rem;
  line-height: 1.12;
  letter-spacing: -0.03em;
}
h1 { font-size: clamp(2.5rem, 5vw, 4.5rem); max-width: 12ch; }
h2 { font-size: clamp(1.8rem, 2.8vw, 3rem); max-width: 16ch; }
h3 { font-size: 1.2rem; }

.lede {
  font-size: clamp(1.05rem, 1.5vw, 1.25rem);
  color: var(--text);
  max-width: 60ch;
  margin-bottom: 1.1rem;
}
.section-heading { margin-bottom: 2rem; }
.section-heading-wide p { max-width: 65ch; }

.supporting-text,
.hero-note,
.pricing-meta,
.footer-meta,
.section-heading p,
.content-card p,
.card p,
.step-card p,
.callout p { color: var(--muted); }

.button-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin: 1.6rem 0 1.4rem;
}
.button-group.centered { justify-content: center; }

.icon-list,
.checklist,
.trust-strip,
.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}
.trust-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-top: 1.1rem;
}
.trust-strip li {
  padding: 0.65rem 0.95rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: rgba(255,255,255,0.72);
  color: var(--primary);
  font-weight: 700;
  font-size: 0.92rem;
}

.card,
.content-card,
.step-card,
.callout,
.hero-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.55rem;
  box-shadow: var(--shadow);
  height: 100%;
}
.hero-panel { padding: 1.8rem; }
.hero-panel h2 { max-width: 12ch; }

.icon-list li,
.checklist li {
  position: relative;
  padding-left: 1.55rem;
  margin-bottom: 0.9rem;
}
.icon-list li::before,
.checklist li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62rem;
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 999px;
  background: var(--support);
}
.checklist li::before { background: var(--accent); }

.muted-note {
  font-size: 0.95rem;
  color: var(--muted);
}

.inverse {
  background: linear-gradient(135deg, rgba(23, 59, 94, 0.98), rgba(31, 111, 120, 0.97));
  color: #fff;
  border: 0;
}
.inverse h2,
.inverse p,
.inverse .card-kicker,
.inverse .final-cta-note { color: rgba(255,255,255,0.95); }

.embed-placeholder {
  display: grid;
  place-items: center;
  min-height: 360px;
  text-align: center;
  border: 2px dashed rgba(58, 190, 255, 0.35);
  background: linear-gradient(180deg, rgba(255,255,255,0.96), rgba(247,250,252,0.8));
  border-radius: var(--radius);
  padding: 1.55rem;
}
.embed-frame {
  width: 100%;
  min-height: 220px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  display: grid;
  place-items: center;
  background: rgba(216, 227, 234, 0.25);
  padding: 1rem;
  margin-top: 1rem;
}

.footer {
  padding: 2rem 0 3rem;
  background: #f3f7fa;
  border-top: 1px solid var(--border);
}
.footer-grid {
  grid-template-columns: 1.2fr 0.8fr 0.8fr;
  align-items: start;
  gap: 1.75rem;
}
.footer h3 {
  margin-bottom: 0.8rem;
  font-size: 1rem;
}
.footer-links { display: grid; gap: 0.65rem; }
.footer-links a { color: var(--muted); }
.footer-links a:hover,
.footer-links a:focus-visible { color: var(--secondary); }

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

@media (max-width: 980px) {
  .hero-grid,
  .split-grid,
  .three-up,
  .four-up,
  .process-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .site-nav {
    position: fixed;
    inset: 78px 0 auto 0;
    padding: 0 1rem 1rem;
    display: none;
  }
  .site-nav.is-open { display: block; }

  .site-nav-panel {
    background: rgba(255,255,255,0.98);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 1rem;
    box-shadow: var(--shadow);
  }

  .site-nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0.5rem;
  }
  .site-nav-list a {
    display: block;
    padding: 0.8rem 0.9rem;
    border-radius: 12px;
  }

  .nav-toggle { display: inline-flex; align-items: center; justify-content: center; }
  h1 { max-width: 14ch; }
}

@media (max-width: 640px) {
  .section,
  main section { padding: 4rem 0; }
  .hero { padding-top: 5rem; }
  .button-group { flex-direction: column; align-items: stretch; }
  .button, .button-secondary { width: 100%; }
  .trust-strip li { width: 100%; border-radius: 18px; }
  .brand-tagline { display: none; }
}