:root {
  --bg: #ffffff;
  --bar: #fafafa;
  --text: #222222;
  --muted: #8a8a8a;
  --line: #e4e4e4;
  --code-bg: #f1f1f1;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  letter-spacing: 0.02em;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}
a { color: inherit; }

.wrap { width: 100%; max-width: 760px; margin: 0 auto; padding: 0 20px; }

/* header */
header { background: var(--bar); padding: 26px 0; }
header .wrap {
  max-width: 1000px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}
.logo { font-weight: 700; letter-spacing: 0.08em; text-decoration: none; font-size: 17px; }
nav { display: flex; gap: 22px; flex-wrap: wrap; }
nav a { text-decoration: none; font-size: 15px; }
nav a:hover, nav a[aria-current="page"] { text-decoration: underline; text-underline-offset: 5px; }

/* main */
main { flex: 1; padding: 72px 0 48px; }
h1 { font-size: 40px; line-height: 1.2; margin: 0 0 32px; letter-spacing: 0.01em; }
h2 { font-size: 24px; margin: 40px 0 16px; }
p { margin: 0 0 18px; }
.muted { color: var(--muted); }
code {
  font-family: "JetBrains Mono", ui-monospace, Menlo, Consolas, monospace;
  font-size: 0.88em;
  background: var(--code-bg);
  padding: 2px 6px;
  border-radius: 3px;
}
pre { background: var(--code-bg); padding: 14px 16px; border-radius: 4px; overflow-x: auto; }
pre code { background: none; padding: 0; }
hr { border: 0; border-top: 1px solid var(--line); margin: 40px 0 0; }

/* plain lists (Commonplace, Questions, Principles) */
ul.plain, ol.plain { padding-left: 24px; margin: 0 0 28px; }
ul.plain li, ol.plain li { margin-bottom: 4px; }
.empty { color: var(--muted); }

/* posts index */
.years { display: block; }
.year-block { display: flex; gap: 40px; margin-bottom: 8px; }
.year-block .year {
  width: 80px;
  flex: none;
  font-family: "JetBrains Mono", ui-monospace, Menlo, Consolas, monospace;
  font-size: 28px;
  color: var(--muted);
  line-height: 1.4;
  padding-top: 6px;
}
.year-block ul { list-style: none; padding: 0; margin: 0; flex: 1; }
.year-block li {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 18px 0;
  border-bottom: 1px dashed var(--muted);
  font-size: 16px;
}
.year-block li .when { color: var(--muted); white-space: nowrap; }
.year-block li a { text-decoration: none; }
.year-block li a:hover { text-decoration: underline; text-underline-offset: 4px; }
.year-block + .year-block { margin-top: 28px; }

/* single post */
.post-meta { color: var(--muted); font-size: 14px; margin: -16px 0 36px; }
.post h2 { font-size: 22px; }
.post ul, .post ol { padding-left: 24px; }
.post blockquote { margin: 0 0 18px; padding-left: 16px; border-left: 3px solid var(--line); color: var(--muted); }

/* footer */
footer { text-align: center; padding: 40px 20px 36px; color: var(--muted); font-size: 14px; }
footer .row { display: inline-flex; gap: 20px; align-items: center; margin-bottom: 20px; }
footer .row a { border-left: 1px solid var(--line); padding-left: 20px; color: var(--muted); }
footer small { display: block; font-size: 12px; }

@media (max-width: 560px) {
  h1 { font-size: 32px; }
  main { padding-top: 40px; }
  .year-block { flex-direction: column; gap: 0; }
  .year-block .year { width: auto; font-size: 22px; padding-top: 0; }
  .year-block li { flex-direction: column; gap: 2px; }
  header .wrap { flex-direction: column; align-items: flex-start; gap: 12px; }
}