:root {
  color-scheme: light;

  --bg: #f2f2f2;
  --surface: #fff;
  --text: #111;
  --muted: #444;
  --border: #e6e6e6;
  --primary: #111;

  --radius-sm: 10px;
  --radius-md: 14px;
  --radius-lg: 18px;
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
}

body {
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
}

a {
  color: inherit;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.container {
  max-width: 1040px;
  margin: 0 auto;
  padding: 24px 16px;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--surface);
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}

.skip-link:focus {
  left: 16px;
  top: 16px;
  z-index: 999;
}

.header {
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  font-weight: 700;
  text-decoration: none;
  letter-spacing: 0.2px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.brand img {
  display: block;
  height: 28px;
  width: auto;
}

@media (min-width: 720px) {
  .brand img {
    height: 32px;
  }
}

.nav-links {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.nav-links a {
  text-decoration: none;
  padding: 8px 10px;
  border-radius: var(--radius-sm);
}

.nav-links a[aria-current="page"] {
  background: var(--bg);
}

.hero {
  padding: 34px 0 10px;
}

.hero h1 {
  margin: 0 0 10px;
  font-size: 34px;
  line-height: 1.15;
  letter-spacing: -0.2px;
}

.hero p {
  margin: 0 0 18px;
  max-width: 70ch;
}

.cta-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin: 12px 0 0;
}

.button {
  display: inline-block;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--primary);
  text-decoration: none;
  font-weight: 600;
  line-height: 1.2;
  transition: transform 120ms ease, opacity 120ms ease, background-color 120ms ease;
}

.button.primary {
  background: var(--primary);
  color: var(--surface);
}

.button:hover {
  transform: translateY(-1px);
}

.button:active {
  transform: translateY(0);
  opacity: 0.95;
}

a:focus-visible,
.button:focus-visible,
.nav-links a:focus-visible {
  outline: 2px solid var(--text);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

.grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 16px;
  margin-top: 18px;
}

.card {
  grid-column: span 12;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 18px;
  background: var(--surface);
}

.card h2, .card h3 {
  margin: 0 0 8px;
}

.muted {
  color: var(--muted);
}

.list {
  margin: 10px 0 0;
  padding-left: 18px;
}

.section-title {
  margin: 28px 0 10px;
  font-size: 20px;
}

.footer {
  border-top: 1px solid var(--border);
  margin-top: 26px;
  background: var(--surface);
}

.footer small {
  display: block;
  color: var(--muted);
}

@media (min-width: 720px) {
  .hero h1 {
    font-size: 42px;
  }

  .card.cols-6 {
    grid-column: span 6;
  }

  .card.cols-4 {
    grid-column: span 4;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    transition: none !important;
  }

  .button:hover,
  .button:active {
    transform: none;
  }
}