* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --bg: #0a0a0a;
  --fg: #c8c8c8;
  --dim: #555;
  --faint: #333;
  --accent: #e8e8e8;
  --font: 'Menlo', 'Monaco', 'Consolas', monospace;
}

html {
  font-size: 15px;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100vh;
  min-height: 100svh;
}

a { color: var(--fg); }
a:hover { color: var(--accent); }

/* --- reading layout --- */

.reading {
  max-width: 62ch;
  margin: 0 auto;
  padding: 5rem 2rem 6rem;
}

.reading h1 {
  font-size: 1rem;
  font-weight: normal;
  color: var(--accent);
  margin-bottom: 3rem;
  letter-spacing: 0.05em;
}

.reading p {
  margin-bottom: 1.4em;
  text-wrap: pretty;
}

.reading hr {
  border: none;
  margin: 2.5em 0;
  text-align: center;
}

.reading hr::after {
  content: '\b7';
  color: var(--dim);
}

.reading em {
  font-style: italic;
  color: var(--accent);
}

.reading strong {
  font-weight: normal;
  color: var(--accent);
}

.reading .sources {
  font-size: 0.75rem;
  color: var(--dim);
  margin-top: 2rem;
  font-style: italic;
}

/* --- back mark --- */

.mark {
  position: fixed;
  top: 1.5rem;
  left: 2rem;
  font-size: 0.75rem;
  color: var(--faint);
  text-decoration: none;
  z-index: 100;
  letter-spacing: 0.1em;
}

.mark:hover { color: var(--dim); }

/* --- footer --- */

.foot {
  max-width: 62ch;
  margin: 0 auto;
  padding: 0 2rem 4rem;
  font-size: 0.75rem;
  color: var(--faint);
}

.foot a { color: var(--faint); text-decoration: none; }
.foot a:hover { color: var(--dim); }

/* --- responsive --- */

@media (max-width: 600px) {
  html { font-size: 14px; }
  .reading { padding: 4rem 1.5rem 4rem; }
  .mark { top: 1rem; left: 1.5rem; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; }
}