:root {
  color-scheme: light;
  font-family: "Inter", "Segoe UI", system-ui, sans-serif;
  line-height: 1.6;
  --bg: #f7f7f9;
  --surface: #ffffff;
  --text: #1b1b1f;
  --muted: #5e5e6b;
  --accent: #2f6fed;
  --border: #e0e0e8;
  --nav-height: 56px;
}

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

body {
  background: var(--bg);
  color: var(--text);
}

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

.site-header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding-top: var(--nav-height);
}

.header-content {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 32px 0 20px;
}

.eyebrow {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
}

.subtitle {
  max-width: 460px;
  color: var(--muted);
}

.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 10;
  background: var(--surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  height: var(--nav-height);
  display: flex;
  align-items: center;
}

.nav-content {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  padding: 0 24px;
}

.site-nav a {
  color: var(--text);
  text-decoration: none;
  font-weight: 500;
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid transparent;
}

.site-nav a:hover,
.site-nav a:focus {
  border-color: var(--accent);
  color: var(--accent);
  outline: none;
}

.section {
  padding: 64px 0;
  scroll-margin-top: calc(var(--nav-height) + 24px);
}

.section:nth-of-type(even) {
  background: var(--surface);
}

h1 {
  font-size: 2.5rem;
  margin-bottom: 8px;
}

h2 {
  font-size: 2rem;
  margin-bottom: 16px;
}

h3 {
  font-size: 1.1rem;
  margin-bottom: 8px;
}

p {
  margin-bottom: 12px;
}

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

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}

.stack {
  display: grid;
  gap: 20px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 20px;
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.03);
}

.card ul {
  padding-left: 18px;
  margin-top: 8px;
  color: var(--muted);
}

.primary {
  background: var(--accent);
  color: white;
  border: none;
  padding: 12px 24px;
  border-radius: 999px;
  font-weight: 600;
  cursor: pointer;
}

.primary:hover,
.primary:focus {
  opacity: 0.9;
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
}

.site-footer {
  padding: 32px 0;
  text-align: center;
  color: var(--muted);
}

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

  h1 {
    font-size: 2rem;
  }
}