:root {
  --bg: #e6edf5;
  --surface: #ffffff;
  --border: #c2d0de;
  --text: #152535;
  --text-muted: #5a6f82;
  --primary: #1a5f8a;
  --primary-hover: #154a6d;
  --primary-contrast: #ffffff;
  --radius: 12px;
}

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

body {
  margin: 0;
  font-family: 'IBM Plex Sans', system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.55;
  color: var(--text);
  background:
    radial-gradient(900px 420px at 0% -10%, color-mix(in srgb, var(--primary) 20%, transparent), transparent),
    var(--bg);
}

a {
  color: var(--primary);
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
}

.container {
  width: min(1080px, 100% - 2rem);
  margin-inline: auto;
}

.site-header {
  border-bottom: 1px solid var(--border);
  background: color-mix(in srgb, var(--surface) 92%, transparent);
  backdrop-filter: blur(8px);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  font-weight: 600;
  color: var(--text);
  text-decoration: none;
}

.brand img {
  width: 36px;
  height: 36px;
}

.nav-actions {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.45rem 0.95rem;
  border-radius: 8px;
  border: 1px solid transparent;
  font-weight: 600;
  font-size: 0.9rem;
  text-decoration: none;
  cursor: pointer;
}

.btn--primary {
  background: var(--primary);
  color: var(--primary-contrast);
}

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

.btn--ghost {
  background: transparent;
  border-color: var(--border);
  color: var(--text);
}

.hero {
  padding: 3.5rem 0 2.5rem;
}

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

@media (min-width: 860px) {
  .hero-grid {
    grid-template-columns: 1.1fr 0.9fr;
  }
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--primary);
  margin: 0 0 0.5rem;
}

h1 {
  font-size: clamp(1.75rem, 4vw, 2.35rem);
  line-height: 1.15;
  margin: 0 0 1rem;
}

.lead {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 52ch;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-top: 1.35rem;
}

.mock-app {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  padding: 1.25rem;
  box-shadow: 0 18px 48px rgb(8 18 32 / 12%);
}

.mock-code {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: 0.35em;
  text-align: center;
  font-variant-numeric: tabular-nums;
  color: var(--primary);
}

.mock-meta {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-top: 0.5rem;
}

.section {
  padding: 2.5rem 0 3rem;
}

.card-grid {
  display: grid;
  gap: 1rem;
}

@media (min-width: 720px) {
  .card-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.15rem 1.2rem;
}

.card h3 {
  margin: 0 0 0.35rem;
  font-size: 1rem;
}

.card p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.92rem;
}

.site-footer {
  border-top: 1px solid var(--border);
  padding: 1.25rem 0 2rem;
  color: var(--text-muted);
  font-size: 0.85rem;
}

.site-footer nav {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 0.5rem;
}