:root {
  --bg: #fcfcfa;
  --fg: #1f2328;
  --muted: #6a6f76;
  --line: #e4e4df;
  --card: #ffffff;
  --accent: #1d6f5f;
  --code-bg: #f3f3ef;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #15171a;
    --fg: #e6e6e3;
    --muted: #9a9fa6;
    --line: #2c3035;
    --card: #1c1f23;
    --accent: #6cc3ad;
    --code-bg: #1f2226;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 17px/1.8 -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB",
        "Microsoft YaHei", "Noto Sans CJK SC", "Segoe UI", Roboto, sans-serif;
}
a { color: var(--accent); text-underline-offset: 3px; }
a:hover { text-decoration-thickness: 2px; }
img { max-width: 100%; height: auto; border-radius: 6px; }
figure { margin: 1.5em 0; }

header.site, main, footer.site { max-width: 720px; margin: 0 auto; padding: 0 16px; }
header.site {
  display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between;
  gap: 8px 24px; padding-top: 20px; padding-bottom: 12px; border-bottom: 1px solid var(--line);
}
header.site .brand { font-weight: 700; font-size: 1.15rem; color: var(--fg); text-decoration: none; letter-spacing: .01em; }
header.site nav { display: flex; gap: 20px; }
header.site nav a { color: var(--muted); text-decoration: none; }
header.site nav a:hover { color: var(--fg); }
main { padding-top: 24px; padding-bottom: 48px; }
footer.site { border-top: 1px solid var(--line); color: var(--muted); font-size: .9rem; padding-top: 12px; padding-bottom: 32px; }
footer.site a { color: var(--muted); }

h1 { font-size: 1.75rem; line-height: 1.35; margin: .4em 0 .3em; }
h2 { font-size: 1.3rem; line-height: 1.4; margin: 1.8em 0 .6em; }
h3 { font-size: 1.1rem; margin: 1.5em 0 .4em; }
h4 { font-size: 1rem; margin: 1.3em 0 .3em; }
.lead, .meta, .crumbs, .more { color: var(--muted); }
.meta, .crumbs { font-size: .9rem; margin: 0; }
.crumbs a, .meta a { color: var(--muted); }
#page-views:not(:empty)::before { content: "· "; }

/* home */
.verse { font-size: 1.25rem; line-height: 1.9; font-weight: 600; letter-spacing: .06em; margin: .4em 0 1em; }
.intro p { margin: .6em 0; }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 12px; }
.section-card, .project {
  display: block; padding: 14px 16px; border: 1px solid var(--line); border-radius: 10px;
  background: var(--card); color: var(--fg); text-decoration: none;
}
.section-card:hover, .project:hover { border-color: var(--accent); }
.section-card h3, .project h3 { margin: 0 0 4px; font-size: 1.05rem; color: var(--accent); }
.section-card p, .project p { margin: 0; font-size: .92rem; line-height: 1.6; color: var(--muted); }
.section-card .count { display: block; margin-top: 6px; font-size: .85rem; color: var(--muted); }

/* lists of posts */
ul.posts { list-style: none; padding: 0; margin: 0; }
ul.posts li { display: flex; flex-wrap: wrap; align-items: baseline; gap: 4px 10px; padding: 8px 0; border-bottom: 1px solid var(--line); }
ul.posts li a { flex: 1 1 260px; text-decoration: none; color: var(--fg); }
ul.posts li a:hover { color: var(--accent); }
ul.posts .tag { font-size: .8rem; color: var(--accent); border: 1px solid var(--line); border-radius: 999px; padding: 0 8px; }
ul.posts time { font-size: .85rem; color: var(--muted); font-variant-numeric: tabular-nums; }
section[id] { scroll-margin-top: 16px; }

/* articles */
article .body { margin-top: 1.5em; }
article .body p { margin: 1em 0; }
article .body blockquote { margin: 1em 0; padding: .2em 1em; border-left: 3px solid var(--line); color: var(--muted); }
article .body table, table.files, table.powerball { border-collapse: collapse; margin: 1em 0; font-size: .95rem; }
article .body table { display: block; overflow-x: auto; max-width: 100%; }
article .body th, article .body td, table.files th, table.files td, table.powerball th, table.powerball td {
  border: 1px solid var(--line); padding: 6px 10px; text-align: left; vertical-align: top;
}
th { background: var(--code-bg); }
.table-wrap { overflow-x: auto; }
table.powerball td, table.powerball th { text-align: center; white-space: nowrap; }
code { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: .88em; background: var(--code-bg); padding: .1em .3em; border-radius: 4px; }
pre { background: var(--code-bg); padding: 12px 14px; border-radius: 8px; overflow-x: auto; line-height: 1.5; }
pre code { background: none; padding: 0; font-size: .85rem; }
pre code span a { display: none; } /* pandoc line anchors */
hr { border: none; border-top: 1px solid var(--line); margin: 2em 0; }

/* pandoc syntax highlighting, muted to fit both themes */
code span.kw, code span.cf { color: #a626a4; }
code span.dt, code span.bu { color: #c18401; }
code span.dv, code span.fl, code span.bn { color: #986801; }
code span.st, code span.ch, code span.ss { color: #50a14f; }
code span.co { color: var(--muted); font-style: italic; }
code span.fu { color: #4078f2; }
code span.va { color: #e45649; }
@media (prefers-color-scheme: dark) {
  code span.kw, code span.cf { color: #c678dd; }
  code span.dt, code span.bu { color: #e5c07b; }
  code span.dv, code span.fl, code span.bn { color: #d19a66; }
  code span.st, code span.ch, code span.ss { color: #98c379; }
  code span.fu { color: #61afef; }
  code span.va { color: #e06c75; }
}

.pager { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 3em; }
.pager a { flex: 1 1 260px; padding: 10px 14px; border: 1px solid var(--line); border-radius: 10px; text-decoration: none; color: var(--fg); }
.pager a span { display: block; font-size: .85rem; color: var(--muted); }
.pager a.next { text-align: right; }
.pager a:hover { border-color: var(--accent); }

@media (max-width: 520px) {
  body { font-size: 16px; }
  h1, .intro h1 { font-size: 1.45rem; }
}