:root {
  --ink: #1d2129;
  --muted: #667085;
  --line: #e6e8ec;
  --accent: #3b5bdb;
  --bg: #ffffff;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font: 16px/1.65 -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
}

.wrap { max-width: 720px; margin: 0 auto; padding: 0 20px; }

.top { border-bottom: 1px solid var(--line); }
.nav { display: flex; justify-content: space-between; align-items: center; height: 64px; }
.logo { font-weight: 700; font-size: 20px; letter-spacing: -0.02em; }
.logo .dot { color: var(--accent); }
nav a { color: var(--muted); text-decoration: none; margin-left: 22px; font-size: 15px; }
nav a:hover { color: var(--ink); }

.hero { padding: 56px 0 32px; }
.hero h1 { font-size: 34px; letter-spacing: -0.02em; margin: 0 0 14px; }
.lead { color: var(--muted); font-size: 17px; max-width: 520px; }

.post { border-top: 1px solid var(--line); padding: 30px 0; }
.post h2 { font-size: 21px; letter-spacing: -0.01em; margin: 0 0 4px; }
.post .date { color: #98a2b3; font-size: 13.5px; margin: 0 0 12px; }
.post p { margin: 0 0 10px; }

footer { border-top: 1px solid var(--line); margin-top: 40px; padding: 22px 20px 34px; color: #98a2b3; font-size: 14px; }

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