:root {
  --bg: #0d1118;
  --line: rgba(169, 183, 213, 0.18);
  --text: #eef3ff;
  --muted: #98a5bd;
  --accent: #42d7cc;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background: var(--bg);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-width: 320px;
  background:
    radial-gradient(circle at 10% 0%, rgba(47, 168, 160, 0.16), transparent 28rem),
    linear-gradient(180deg, #0d1118 0%, #101622 70%, #0d1118 100%);
}

a {
  color: #dffdfa;
  text-decoration: none;
}

.shell {
  width: min(760px, calc(100% - 32px));
  margin: 0 auto;
}

.topbar,
.footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 18px;
  padding: 24px 0;
  color: var(--muted);
}

.topbar nav {
  display: flex;
  gap: 18px;
}

.brand {
  color: var(--text);
  font-weight: 800;
}

main {
  padding: 32px 0 64px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.eyebrow a {
  color: inherit;
}

h1 {
  margin: 0 0 18px;
  font-size: clamp(32px, 6vw, 52px);
  line-height: 1.05;
  letter-spacing: -0.04em;
}

.lead,
.meta {
  color: var(--muted);
}

.meta {
  margin: 0 0 8px;
  font-size: 14px;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 28px;
}

.tag {
  padding: 3px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  font-size: 13px;
}

.languages {
  margin: -12px 0 28px;
  color: var(--muted);
  font-size: 14px;
}

.languages a {
  color: var(--accent);
}

.prose {
  font-size: 17px;
}

.prose h2 {
  margin: 44px 0 12px;
  font-size: 26px;
  letter-spacing: -0.03em;
}

.prose h3 {
  margin: 30px 0 8px;
  font-size: 20px;
}

.prose p,
.prose li {
  color: #c3cde0;
  line-height: 1.75;
}

.prose a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}

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

.prose blockquote {
  margin: 24px 0;
  padding: 4px 18px;
  border-left: 3px solid var(--accent);
  background: rgba(66, 215, 204, 0.06);
}

.prose code {
  padding: 1px 6px;
  border-radius: 6px;
  font-size: 0.9em;
  background: rgba(255, 255, 255, 0.07);
}

.prose table {
  display: block;
  overflow-x: auto;
  width: 100%;
  margin: 24px 0;
  border-collapse: collapse;
  font-size: 15px;
}

.prose th,
.prose td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--line);
  color: #c3cde0;
  text-align: left;
  vertical-align: top;
}

.prose th {
  color: var(--text);
}

.post-list {
  display: grid;
  gap: 16px;
  margin: 36px 0 0;
  padding: 0;
  list-style: none;
}

.card,
.cta {
  display: block;
  padding: clamp(20px, 4vw, 32px);
  border: 1px solid var(--line);
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.045);
}

.card:hover {
  border-color: rgba(66, 215, 204, 0.4);
}

.card h2 {
  margin: 0 0 8px;
  font-size: 22px;
  letter-spacing: -0.02em;
}

.card p:last-child {
  margin: 0;
  color: var(--muted);
  line-height: 1.6;
}

.cta {
  margin-top: 56px;
  border-color: rgba(66, 215, 204, 0.32);
  background: rgba(47, 168, 160, 0.08);
}

.cta h2 {
  margin: 0 0 10px;
  font-size: 22px;
}

.cta p {
  color: var(--muted);
  line-height: 1.6;
}

.button {
  display: inline-block;
  margin-top: 8px;
  padding: 11px 18px;
  border-radius: 999px;
  color: #06201e;
  font-weight: 700;
  background: var(--accent);
}

.footer {
  border-top: 1px solid var(--line);
  font-size: 14px;
}

@media (max-width: 640px) {
  .footer {
    flex-direction: column;
    align-items: flex-start;
  }
}