:root {
  --bg: #101418;
  --panel: #171d24;
  --ink: #e8e4da;
  --sub: #9aa5b1;
  --line: #2a323c;
  --accent: #d9b36a;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "Hiragino Kaku Gothic ProN", "Yu Gothic", "Noto Sans JP", sans-serif;
  line-height: 1.9;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
header.site {
  border-bottom: 1px solid var(--line);
  padding: 28px 20px 20px;
  text-align: center;
}
header.site .label {
  font-size: 28px;
  letter-spacing: 0.35em;
  margin: 0;
  font-weight: 600;
}
header.site .tagline { color: var(--sub); font-size: 13px; margin: 6px 0 0; }
main { max-width: 760px; margin: 0 auto; padding: 32px 20px 64px; }
h1 { font-size: 24px; line-height: 1.5; margin: 0 0 16px; }
h2 { font-size: 18px; margin: 40px 0 12px; border-left: 3px solid var(--accent); padding-left: 10px; }
p { margin: 0 0 16px; }
.lead { color: var(--ink); }
.muted { color: var(--sub); font-size: 14px; }
.corners { display: grid; gap: 14px; margin-top: 24px; }
.corner {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 18px 20px;
}
.corner h3 { margin: 0 0 6px; font-size: 17px; }
.corner h3 a { color: var(--ink); }
.corner p { margin: 0; color: var(--sub); font-size: 14px; }
article.post { margin-bottom: 40px; }
article.post .date { color: var(--sub); font-size: 13px; }
footer.site {
  border-top: 1px solid var(--line);
  padding: 24px 20px 40px;
  text-align: center;
  color: var(--sub);
  font-size: 12px;
}
nav.back { margin-bottom: 24px; font-size: 13px; }