:root {
  --bg: #ffffff;
  --bg-light: #f6f8fa;
  --text: #1f2933;
  --muted: #6b7280;
  --accent: #2563eb;
  --border: #e5e7eb;
}

* {
  box-sizing: border-box;
}

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

a {
  color: var(--accent);
  text-decoration: none;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px;
}

.container.narrow {
  max-width: 760px;
}

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

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo {
  font-weight: 700;
  font-size: 1.25rem;
}

.nav a {
  margin-left: 18px;
  font-size: 0.95rem;
}

.hero {
  padding: 90px 0;
  background: linear-gradient(180deg, #f9fafb, #ffffff);
  text-align: center;
}

.hero h1 {
  font-size: 2.4rem;
  margin-bottom: 16px;
}

.lead {
  font-size: 1.1rem;
  color: var(--muted);
  max-width: 700px;
  margin: 0 auto 28px;
}

.hero-actions .btn {
  margin: 0 8px;
}

.section {
  padding: 70px 0;
}

.section.light {
  background: var(--bg-light);
}

h2 {
  font-size: 1.7rem;
  margin-bottom: 18px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
}

.card {
  padding: 18px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fff;
  text-align: center;
  font-weight: 500;
}

.focus-list {
  list-style: none;
  padding: 0;
}

.focus-list li {
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
}

.btn {
  display: inline-block;
  padding: 10px 18px;
  border-radius: 6px;
  border: 1px solid var(--border);
  font-size: 0.95rem;
}

.btn.primary {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.btn.outline {
  background: transparent;
}

.site-footer {
  border-top: 1px solid var(--border);
  padding: 30px 0;
  text-align: center;
  font-size: 0.85rem;
  color: var(--muted);
}

@media (max-width: 768px) {
  .hero h1 {
    font-size: 2rem;
  }
  .nav {
    display: none;
  }
}