:root {
  --bg: #0b0f10;
  --bg-panel: #11161a;
  --fg: #e8f1ef;
  --fg-dim: #9fb3ae;
  --accent: #39ff9c;
  --accent-dim: #1f8f5c;
  --border: #223029;
  --mono: "IBM Plex Mono", "Share Tech Mono", ui-monospace, Menlo, Consolas, monospace;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--mono);
  line-height: 1.55;
}

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

a:hover {
  text-decoration: underline;
}

header.site {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  background: rgba(11, 15, 16, 0.92);
  backdrop-filter: blur(6px);
  z-index: 10;
}

header.site .brand {
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--fg);
}

header.site .brand span {
  color: var(--accent);
}

header.site nav a {
  margin-left: 1.5rem;
  color: var(--fg-dim);
  font-size: 0.95rem;
}

header.site nav a.active,
header.site nav a:hover {
  color: var(--accent);
}

main {
  max-width: 880px;
  margin: 0 auto;
  padding: 3rem 1.5rem 5rem;
}

.hero {
  text-align: center;
  padding: 3rem 0 2rem;
}

.hero h1 {
  font-size: 2.1rem;
  margin: 0 0 0.75rem;
  letter-spacing: 0.02em;
}

.hero p {
  color: var(--fg-dim);
  font-size: 1.05rem;
  max-width: 560px;
  margin: 0 auto 1.75rem;
}

.cta-row {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  display: inline-block;
  padding: 0.7rem 1.4rem;
  border-radius: 6px;
  border: 1px solid var(--accent-dim);
  font-weight: 600;
  letter-spacing: 0.02em;
}

.btn.primary {
  background: var(--accent);
  color: #06120c;
  border-color: var(--accent);
}

.btn.primary:hover {
  background: #4dffb0;
  text-decoration: none;
}

.btn.secondary {
  color: var(--fg);
  border-color: var(--border);
}

.btn.secondary:hover {
  border-color: var(--accent-dim);
  text-decoration: none;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.25rem;
  margin: 2.5rem 0;
}

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

.card h3 {
  margin: 0 0 0.5rem;
  font-size: 1rem;
  color: var(--accent);
}

.card p {
  margin: 0;
  color: var(--fg-dim);
  font-size: 0.92rem;
}

h2 {
  font-size: 1.3rem;
  margin-top: 2.5rem;
  border-bottom: 1px solid var(--border);
  padding-bottom: 0.4rem;
}

pre {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1rem;
  overflow-x: auto;
  font-size: 0.88rem;
}

code {
  font-family: var(--mono);
}

table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0;
  font-size: 0.9rem;
}

th, td {
  text-align: left;
  padding: 0.5rem 0.6rem;
  border-bottom: 1px solid var(--border);
}

th {
  color: var(--fg-dim);
  font-weight: 600;
}

.note {
  border-left: 3px solid var(--accent-dim);
  padding: 0.6rem 1rem;
  background: var(--bg-panel);
  color: var(--fg-dim);
  font-size: 0.9rem;
  border-radius: 0 6px 6px 0;
  margin: 1.25rem 0;
}

.flash-panel {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 2rem;
  text-align: center;
  margin-top: 1.5rem;
}

footer.site {
  text-align: center;
  color: var(--fg-dim);
  font-size: 0.85rem;
  padding: 2rem 0;
  border-top: 1px solid var(--border);
}