:root {
  --ink: #16181d;
  --muted: #5a606b;
  --bg: #ffffff;
  --panel: #f4f5f7;
  --line: #dfe2e7;
  --accent: #0b5cad;
  --red: #ee352e;
  --green: #00933c;
  --orange: #ff6319;
}
@media (prefers-color-scheme: dark) {
  :root {
    --ink: #eceef2;
    --muted: #a3a9b4;
    --bg: #121418;
    --panel: #1c1f25;
    --line: #2c3038;
    --accent: #6cb0ff;
  }
}
* { box-sizing: border-box; }
html { font-size: 17px; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  line-height: 1.55;
  color: var(--ink);
  background: var(--bg);
}
main, header, footer { max-width: 44rem; margin: 0 auto; padding: 0 1.25rem; }
header { padding-top: 2.5rem; }
h1 { font-size: 2rem; line-height: 1.15; margin: 0 0 0.5rem; letter-spacing: -0.01em; }
h2 { font-size: 1.25rem; margin: 2.25rem 0 0.5rem; }
h3 { font-size: 1rem; margin: 1.5rem 0 0.25rem; }
p, li { color: var(--ink); }
.lede { font-size: 1.15rem; color: var(--muted); margin: 0 0 1.5rem; }
a { color: var(--accent); }
.lines { display: flex; gap: 0.4rem; margin: 1rem 0 1.5rem; flex-wrap: wrap; }
.bullet {
  width: 2.1rem; height: 2.1rem; border-radius: 50%;
  display: inline-grid; place-items: center;
  color: #fff; font-weight: 700; font-size: 1.1rem;
}
.r { background: var(--red); } .g { background: var(--green); } .o { background: var(--orange); }
.signup {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 1.5rem;
  margin: 1.5rem 0;
}
.signup .cta { font-size: 1.5rem; font-weight: 700; margin: 0 0 0.25rem; }
.keyword {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  background: var(--bg); border: 1px solid var(--line);
  padding: 0.05rem 0.45rem; border-radius: 6px;
}
.fine { font-size: 0.9rem; color: var(--muted); margin: 0.75rem 0 0; }
.cols { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; }
@media (max-width: 640px) { .cols { grid-template-columns: 1fr; } }
footer {
  margin-top: 3rem; padding-top: 1.25rem; padding-bottom: 2.5rem;
  border-top: 1px solid var(--line); font-size: 0.9rem; color: var(--muted);
}
footer a { color: var(--muted); }
nav { margin-bottom: 1.5rem; font-size: 0.95rem; }