:root {
  --ink: #0d1b2a;
  --ink-soft: #48586a;
  --primary: #0e9c8e;
  --primary-light: #e2f7f3;
  --border: #dde7e4;
  --radius: 16px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  color: var(--ink);
  line-height: 1.7;
  background: #fff;
}

.post {
  max-width: 760px;
  margin: 0 auto;
  padding: 56px 24px 96px;
}

.post-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  padding: 5px 12px;
  border-radius: 999px;
  background: var(--primary-light);
  color: var(--primary);
  margin-bottom: 16px;
}

.post-header h1 {
  font-size: clamp(28px, 4vw, 40px);
  line-height: 1.25;
  margin: 0 0 16px;
}

.post-lead {
  font-size: 18px;
  color: var(--ink-soft);
  margin-bottom: 16px;
}

.post-meta {
  font-size: 14px;
  color: var(--ink-soft);
  display: flex;
  gap: 8px;
}

.post-section { margin-top: 40px; }

.post-section h2 {
  font-size: 24px;
  margin-bottom: 16px;
}

.post-section h3 {
  font-size: 18px;
  margin-bottom: 8px;
}

.post-section p { color: var(--ink-soft); }

.post-callout {
  background: var(--primary-light);
  border-left: 3px solid var(--primary);
  border-radius: 8px;
  padding: 16px 20px;
  margin-top: 20px;
}

.post-steps { padding-left: 24px; color: var(--ink-soft); }
.post-steps li + li { margin-top: 8px; }

.post-columns {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.post-card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
}

@media (max-width: 640px) {
  .post-columns { grid-template-columns: 1fr; }
}