:root {
  --bg: #f8fafc;
  --text: #102a43;
  --accent: #2563eb;
  --accent-dark: #1d4ed8;
  --card: #ffffff;
  --border: #dbeafe;
}

* {
  box-sizing: border-box;
}

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

img {
  max-width: 100%;
}

.container {
  width: min(1100px, calc(100% - 2rem));
  margin: 0 auto;
}

.site-header {
  background: var(--card);
  border-bottom: 1px solid var(--border);
  padding: 1rem 0;
}

.site-header h1 {
  margin: 0;
  font-size: 1.5rem;
}

.site-header nav {
  margin-top: 0.75rem;
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.site-header a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
}

.hero {
  background: linear-gradient(135deg, #dbeafe 0%, #eff6ff 100%);
  border: 1px solid var(--border);
  border-radius: 1rem;
  padding: 2rem;
  margin: 2rem 0;
}

.hero h2 {
  margin-top: 0;
  font-size: clamp(2rem, 4vw, 3rem);
}

.hero p {
  max-width: 720px;
  margin: 1rem 0 1.5rem;
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
  margin-bottom: 2rem;
}

.cards article,
.content-block {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 1rem;
  padding: 1.5rem;
}

.card h3,
.content-block h2 {
  margin-top: 0;
}

.button {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  padding: 0.85rem 1.35rem;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 600;
}

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

.site-footer {
  border-top: 1px solid var(--border);
  background: var(--card);
  padding: 1rem 0;
  margin-top: 2rem;
}

.site-footer p {
  margin: 0;
  text-align: center;
}

form {
  display: grid;
  gap: 1rem;
}

label {
  display: block;
  font-weight: 600;
}

input,
textarea {
  width: 100%;
  padding: 0.85rem 1rem;
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  font-size: 1rem;
}

input:focus,
textarea:focus {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.form-message {
  margin-top: 0.5rem;
  font-weight: 600;
}

@media (max-width: 640px) {
  .site-header {
    text-align: center;
  }

  .site-header nav {
    justify-content: center;
  }
}