:root {
  --bg: #0b0f14;
  --fg: #e8eef6;
  --muted: #9fb0c3;
  --card: #121a24;
  --border: #223042;
  --link: #7ab7ff;
  --mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono",
    "Courier New", monospace;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial,
    "Apple Color Emoji", "Segoe UI Emoji";
  line-height: 1.55;
}

a {
  color: var(--link);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 24px 16px 80px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 0 22px;
  border-bottom: 1px solid var(--border);
}

.brand {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.brand-title {
  font-weight: 700;
  letter-spacing: 0.2px;
}

.brand-subtitle {
  color: var(--muted);
  font-size: 13px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 12px;
  margin-top: 18px;
}

.card {
  border: 1px solid var(--border);
  background: var(--card);
  border-radius: 12px;
  padding: 14px 14px 12px;
}

.card-title {
  font-weight: 650;
  margin: 0 0 6px;
}

.card-meta {
  color: var(--muted);
  font-size: 13px;
}

.kbd {
  font-family: var(--mono);
  font-size: 12px;
  padding: 2px 6px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: #0d131b;
  color: var(--muted);
}

.markdown {
  margin-top: 18px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--card);
  padding: 16px;
}

.markdown h1,
.markdown h2,
.markdown h3 {
  margin: 18px 0 10px;
}

.markdown pre,
.markdown code {
  font-family: var(--mono);
}

.markdown pre {
  padding: 12px;
  border-radius: 10px;
  overflow-x: auto;
  border: 1px solid var(--border);
  background: #0d131b;
}

.markdown p {
  margin: 10px 0;
}

.markdown ul {
  margin: 10px 0;
  padding-left: 18px;
}

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

.hidden {
  display: none;
}