:root {
  --bg: #000000;
  --panel: #0a0a0a;
  --ink: #ffffff;
  --dim: #9a9a9a;
  --line: #ffffff;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--ink);
  font-family: 'Space Mono', monospace;
  font-size: 16px;
  line-height: 1.65;
}
a { color: inherit; }
::selection { background: var(--ink); color: var(--bg); }

.mono-hd { font-family: 'VT323', monospace; letter-spacing: 0.01em; }

nav {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 24px;
  border-bottom: 4px double var(--line);
}
.nav-logo {
  display: flex; align-items: center; gap: 10px;
  font-size: 1rem; font-weight: 700;
  letter-spacing: 0.15em;
}
.back-link { font-size: 0.8rem; color: var(--dim); text-decoration: none; border-bottom: 1px dashed var(--dim); }
.back-link:hover { color: var(--ink); border-color: var(--ink); }

main {
  max-width: 720px;
  margin: 0 auto;
  padding: 48px 24px 80px;
}
h1.mono-hd {
  font-size: clamp(2rem, 6vw, 3rem);
  line-height: 1.05;
  margin-bottom: 8px;
}
.updated {
  font-size: 0.75rem;
  color: var(--dim);
  margin-bottom: 40px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
h2.mono-hd {
  font-size: 1.5rem;
  margin-top: 36px;
  margin-bottom: 10px;
  border-bottom: 2px solid var(--line);
  padding-bottom: 4px;
}
p, li {
  font-size: 0.92rem;
  color: var(--dim);
  margin-bottom: 12px;
}
strong { color: var(--ink); }
ul, ol { padding-left: 22px; margin-bottom: 12px; }

footer {
  padding: 22px 24px;
  border-top: 3px solid var(--line);
  text-align: center;
  font-size: 0.72rem;
  color: var(--dim);
}