:root {
  --background: #f8fafc;
  --surface: #ffffff;
  --text: #111827;
  --muted: #475569;
  --border: #e2e8f0;
  --brand: #4f46e5;
  --brand-dark: #3730a3;
  --brand-soft: #eef2ff;
  --success: #16a34a;
  --warning: #d97706;
  --danger: #dc2626;
  --radius: 16px;
  --shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

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

a {
  color: var(--brand-dark);
}

a:hover {
  text-decoration-thickness: 2px;
}

.skip-link {
  position: absolute;
  top: -100px;
  left: 1rem;
  z-index: 100;
  background: var(--brand-dark);
  color: #ffffff;
  padding: 0.75rem 1rem;
  border-radius: 0.5rem;
}

.skip-link:focus {
  top: 1rem;
}

.site-header {
  background: rgba(255, 255, 255, 0.92);
  border-bottom: 1px solid var(--border);
}

.nav {
  max-width: 1040px;
  margin: 0 auto;
  padding: 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.logo {
  color: var(--text);
  font-weight: 800;
  text-decoration: none;
  letter-spacing: -0.03em;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

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

.nav-links a:hover,
.nav-links a[aria-current="page"] {
  color: var(--brand-dark);
}

.hero {
  max-width: 1040px;
  margin: 0 auto;
  padding: 5rem 1rem 4rem;
}

.eyebrow {
  display: inline-block;
  margin: 0 0 1rem;
  color: var(--brand-dark);
  background: var(--brand-soft);
  padding: 0.35rem 0.65rem;
  border-radius: 999px;
  font-size: 0.9rem;
  font-weight: 700;
}

h1,
h2,
h3 {
  line-height: 1.15;
  letter-spacing: -0.03em;
}

h1 {
  max-width: 760px;
  margin: 0;
  font-size: clamp(2.4rem, 7vw, 5rem);
}

h2 {
  margin-top: 0;
  font-size: clamp(1.8rem, 4vw, 2.5rem);
}

h3 {
  margin-top: 0;
  font-size: 1.25rem;
}

.lead {
  max-width: 680px;
  color: var(--muted);
  font-size: 1.25rem;
  margin: 1.5rem 0 0;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 2rem;
}

.button {
  display: inline-block;
  background: var(--brand);
  color: #ffffff;
  padding: 0.85rem 1.1rem;
  border-radius: 0.75rem;
  font-weight: 700;
  text-decoration: none;
  box-shadow: var(--shadow);
}

.button:hover {
  background: var(--brand-dark);
}

.button.secondary {
  background: var(--surface);
  color: var(--brand-dark);
  border: 1px solid var(--border);
}

.button.secondary:hover {
  background: var(--brand-soft);
}

.section {
  max-width: 1040px;
  margin: 0 auto;
  padding: 3rem 1rem;
}

.cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.card,
.note,
.page {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.card {
  padding: 1.5rem;
}

.card p,
.section p,
.page p,
li {
  color: var(--muted);
}

.split {
  display: grid;
  grid-template-columns: 1.7fr 1fr;
  gap: 1rem;
  align-items: start;
}

.note {
  padding: 1.5rem;
  border-left: 5px solid var(--brand);
}

.contact {
  text-align: center;
}

.email-link {
  font-size: 1.25rem;
  font-weight: 800;
}

.page {
  max-width: 800px;
  margin: 3rem auto;
  padding: 2rem;
}

.not-found {
  text-align: center;
}

.site-footer {
  border-top: 1px solid var(--border);
  padding: 2rem 1rem;
  text-align: center;
  color: var(--muted);
}

.site-footer p {
  margin: 0;
}

:focus-visible {
  outline: 3px solid var(--warning);
  outline-offset: 4px;
}

@media (max-width: 760px) {
  .nav {
    align-items: flex-start;
    flex-direction: column;
  }

  .cards,
  .split {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: 3rem;
  }
}