:root {
  --fg:      rgba(255, 255, 255, 0.82);
  --fg-dim:  rgba(255, 255, 255, 0.48);
  --bg:      #0a0a0f;
  --accent:  #7F77DD;
  --link:    #9B96E8;
  --border:  rgba(127, 119, 221, 0.18);
}

html, body {
  margin: 0;
  padding: 0;
  color: var(--fg);
  background: var(--bg);
  font-family: system-ui, 'Segoe UI', Roboto, Arial, sans-serif;
  line-height: 1.65;
}

/* ── Container ───────────────────────────────────────────────────────────── */

.container {
  max-width: 54rem;
  margin: 0 auto;
  padding: 2.5rem 1.5rem 5rem;
}

/* ── Site Header ─────────────────────────────────────────────────────────── */

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.5rem;
  height: 54px;
  background: rgba(8, 8, 20, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
}

.brand {
  font-weight: 700;
  color: var(--accent);
  text-decoration: none;
  font-size: 0.88rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-right: 0;
}

nav {
  display: flex;
  gap: 2px;
}

nav a {
  padding: 5px 11px;
  color: var(--fg-dim);
  text-decoration: none;
  font-size: 0.84rem;
  border-radius: 5px;
  transition: color 0.15s, background 0.15s;
  margin-right: 0;
}

nav a:hover {
  color: var(--fg);
  background: rgba(127, 119, 221, 0.1);
  text-decoration: none;
}

/* ── Site Footer ─────────────────────────────────────────────────────────── */

.site-footer {
  border-top: 1px solid var(--border);
  border-bottom: 0;
  margin-top: 0;
  padding: 1.1rem 1.5rem;
  font-size: 0.8rem;
  color: var(--fg-dim);
  text-align: center;
}

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

.site-footer a:hover {
  color: var(--fg);
}

/* ── Typography ──────────────────────────────────────────────────────────── */

h1 {
  font-size: 2.1rem;
  font-weight: 700;
  margin: 0 0 0.6rem;
  color: var(--fg);
  line-height: 1.2;
}

h2 {
  font-size: 1.15rem;
  font-weight: 600;
  margin: 2.2rem 0 0.5rem;
  color: var(--fg);
}

h3 {
  font-size: 0.75rem;
  font-weight: 600;
  margin: 1.8rem 0 0.4rem;
  color: var(--fg-dim);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

p {
  margin: 0 0 1rem;
  color: var(--fg);
}

p.lead {
  font-size: 1.05rem;
  color: var(--fg-dim);
  margin-bottom: 1.5rem;
}

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

a:hover {
  color: var(--fg);
  text-decoration: underline;
}

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

code {
  font-family: 'Courier New', Courier, monospace;
  font-size: 0.87em;
  background: rgba(127, 119, 221, 0.1);
  border: 1px solid rgba(127, 119, 221, 0.2);
  border-radius: 3px;
  padding: 1px 5px;
  color: #c0bcf5;
}

ul, ol {
  margin: 0 0 1rem;
  padding-left: 1.4rem;
}

li {
  margin-bottom: 0.35rem;
  color: var(--fg);
}

hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 2rem 0;
}