:root {
  --bg: #121417;
  --card-bg: #1e2229;
  --accent: #22c55e;
  --text: #e2e8f0;
  --muted: #94a3b8;
  --border: #334155;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, sans-serif;
  line-height: 1.6;
  padding: 0 1rem 3rem;
}

header {
  max-width: 900px;
  margin: 0 auto 2rem;
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.25rem;
  font-weight: bold;
  color: var(--accent);
  text-decoration: none;
}

nav a {
  color: var(--muted);
  text-decoration: none;
  margin-left: 1.5rem;
  font-weight: 500;
}

nav a:hover, nav a.active {
  color: var(--text);
}

main {
  max-width: 900px;
  margin: 0 auto;
}

h1 {
  font-size: 2rem;
  margin-bottom: 1rem;
}

h2 {
  font-size: 1.4rem;
  margin: 1.5rem 0 0.8rem;
  color: var(--accent);
}

p {
  color: var(--muted);
  margin-bottom: 1rem;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1rem;
  margin-top: 1.5rem;
}

.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  padding: 1.25rem;
  border-radius: 8px;
}

.card h3 {
  color: #fff;
  margin-bottom: 0.5rem;
}

.tag {
  display: inline-block;
  background: rgba(34, 197, 94, 0.15);
  color: var(--accent);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
  margin-bottom: 0.75rem;
}

.step-list {
  list-style: decimal inside;
  color: var(--muted);
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}

.step-list strong {
  color: var(--text);
}

.btn {
  display: inline-block;
  background: var(--accent);
  color: #052e16;
  font-weight: 600;
  text-decoration: none;
  padding: 0.6rem 1.2rem;
  border-radius: 6px;
  margin-top: 0.5rem;
}