:root {
  color-scheme: light;
  --bg: #f7f9fc;
  --card: #ffffff;
  --text: #1f2937;
  --muted: #4b5563;
  --primary: #0f766e;
  --primary-strong: #115e59;
  --border: #e5e7eb;
  --shadow: 0 8px 20px rgb(15 23 42 / 8%);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial,
    sans-serif;
  line-height: 1.55;
  color: var(--text);
  background: var(--bg);
}

.container {
  width: min(980px, 92%);
  margin: 0 auto;
}

.hero {
  color: #ffffff;
  background: linear-gradient(135deg, #134e4a, #0f766e);
  padding: 3.5rem 0 2.8rem;
}

.tag {
  margin: 0;
  font-size: 0.9rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  opacity: 0.85;
}

h1 {
  margin: 0.35rem 0 0.45rem;
  font-size: clamp(1.9rem, 4vw, 2.8rem);
}

.subtitle {
  margin: 0 0 1.3rem;
  max-width: 60ch;
}

.menu {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
}

.menu a {
  color: #ffffff;
  text-decoration: none;
  font-weight: 600;
  border: 1px solid rgb(255 255 255 / 30%);
  border-radius: 999px;
  padding: 0.4rem 0.85rem;
}

.menu a:hover {
  background: rgb(255 255 255 / 12%);
}

main {
  padding: 1.4rem 0 2.2rem;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  box-shadow: var(--shadow);
  padding: 1.2rem 1.1rem;
  margin-top: 1rem;
}

h2,
h3 {
  margin-top: 0;
}

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

ul {
  margin: 0.35rem 0 0;
  padding-left: 1.1rem;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 0.9rem;
}

.footer {
  padding: 0 0 1.8rem;
}

.footer p {
  text-align: center;
  font-size: 0.95rem;
}