:root {
  --bg: #101214;
  --panel: #171a1d;
  --ink: #d7d9dc;
  --dim: #8b9096;
  --rule: #2a2f34;
  --accent: #7fd6a2;
  --link: #9ec5ff;
  --mono: ui-monospace, "SF Mono", "Cascadia Mono", Menlo, Consolas, "DejaVu Sans Mono", monospace;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-text-size-adjust: 100%;
}

.wrap {
  max-width: 46rem;
  margin: 0 auto;
  padding: 3rem 1.25rem 5rem;
}

h1, h2, h3 { font-family: var(--mono); font-weight: 600; letter-spacing: -0.01em; line-height: 1.25; }

h1 { font-size: 1.9rem; margin: 0 0 .3rem; }
h2 { font-size: 1.15rem; margin: 2.75rem 0 .75rem; color: var(--accent); }
h3 { font-size: 1rem; margin: 1.75rem 0 .5rem; }

.tagline { color: var(--dim); font-family: var(--mono); font-size: .9rem; margin: 0 0 2rem; }

a { color: var(--link); text-decoration-color: #3f5f8a; text-underline-offset: 2px; }
a:hover { text-decoration-color: var(--link); }

p { margin: 0 0 1rem; }

hr { border: 0; border-top: 1px solid var(--rule); margin: 3rem 0; }

.note {
  border-left: 2px solid var(--rule);
  padding: .1rem 0 .1rem 1rem;
  color: var(--dim);
  font-size: .93rem;
}

.card {
  display: block;
  background: var(--panel);
  border: 1px solid var(--rule);
  border-radius: 6px;
  padding: 1rem 1.15rem;
  margin: 0 0 .85rem;
  text-decoration: none;
  color: inherit;
}
.card:hover { border-color: #3c454c; }
.card b { font-family: var(--mono); color: var(--accent); font-weight: 600; }
.card span { display: block; color: var(--dim); font-size: .93rem; margin-top: .2rem; }

footer {
  margin-top: 4rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--rule);
  color: var(--dim);
  font-size: .87rem;
  font-family: var(--mono);
}

.todo {
  background: #2a2113;
  border: 1px dashed #6b5522;
  color: #e2c98a;
  padding: .8rem 1rem;
  border-radius: 5px;
  font-size: .9rem;
  margin: 0 0 1rem;
}

code { font-family: var(--mono); font-size: .9em; background: #1d2126; padding: .1em .35em; border-radius: 3px; }

@media (max-width: 40rem) {
  .wrap { padding: 2rem 1rem 3.5rem; }
  h1 { font-size: 1.55rem; }
}