/* New site stylesheet - single file, no JavaScript, no external fonts.
   Covers layout, post typography, pygments code highlighting. */

:root {
  --text: #24292f;
  --text-light: #57606a;
  --link: #0969da;
  --link-hover: #0550ae;
  --border: #d0d7de;
  --bg: #ffffff;
  --bg-soft: #f6f8fa;
  --accent: #1a7f37;
  --code-bg: #f6f8fa;
  --max-width: 760px;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
  display: flex;
  min-height: 100vh;
  flex-direction: column;
}

main { flex: 1; }

.wrap {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

a { color: var(--link); text-decoration: none; }
a:hover { color: var(--link-hover); text-decoration: underline; }

/* header / nav */
.site-header {
  border-bottom: 1px solid var(--border);
  background: var(--bg-soft);
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  padding-top: 14px;
  padding-bottom: 14px;
}
.nav-brand {
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--text);
}
.nav-links a {
  margin-left: 18px;
  color: var(--text-light);
}
.nav-links a:hover { color: var(--link); text-decoration: none; }

/* hero */
.hero { padding: 40px 0 8px; }
.hero h1 { margin: 0 0 6px; font-size: 1.9rem; }
.hero p { margin: 0; color: var(--text-light); }

.section-title {
  font-size: 1.15rem;
  border-bottom: 1px solid var(--border);
  padding-bottom: 8px;
  margin-top: 44px;
}

/* home post cards */
.post-card {
  padding: 18px 0 16px;
  border-bottom: 1px solid var(--border);
}
.post-card h2 { margin: 0 0 4px; font-size: 1.25rem; }
.post-card h2 a { color: var(--text); }
.post-card h2 a:hover { color: var(--link); }
.post-card > p { margin: 8px 0 0; color: var(--text-light); }

.post-meta {
  color: var(--text-light);
  font-size: 0.9rem;
  margin: 0 0 4px;
}
.post-meta time { margin-right: 10px; }

.tag {
  display: inline-block;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0 9px;
  margin-right: 6px;
  font-size: 0.8rem;
  line-height: 1.6;
  color: var(--text-light);
}

.archive-box .btn {
  display: inline-block;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 6px 14px;
  color: var(--text);
  background: var(--bg-soft);
}
.archive-box .btn:hover { border-color: var(--link); color: var(--link); text-decoration: none; }

/* post page */
.post { padding-top: 36px; }
.post h1 { margin: 0 0 4px; font-size: 1.7rem; line-height: 1.35; }
.back-home { margin-top: 48px; border-top: 1px solid var(--border); padding-top: 16px; }

.post-list { list-style: none; padding: 0; }
.post-list li {
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
  display: flex;
  gap: 14px;
  align-items: baseline;
}
.post-list time { color: var(--text-light); font-size: 0.9rem; flex-shrink: 0; }

/* post body typography */
.post-body { font-size: 1rem; }
.post-body h1, .post-body h2, .post-body h3 { line-height: 1.35; margin-top: 1.6em; }
.post-body h2 { font-size: 1.35rem; padding-bottom: 6px; border-bottom: 1px solid var(--border); }
.post-body h3 { font-size: 1.15rem; }
.post-body img { max-width: 100%; height: auto; }
.post-body blockquote {
  margin: 1em 0;
  padding: 4px 16px;
  border-left: 4px solid var(--border);
  color: var(--text-light);
  background: var(--bg-soft);
}
.post-body table { border-collapse: collapse; width: 100%; margin: 1em 0; display: block; overflow-x: auto; }
.post-body th, .post-body td { border: 1px solid var(--border); padding: 6px 12px; text-align: left; }
.post-body th { background: var(--bg-soft); }
.post-body code {
  font-family: ui-monospace, SFMono-Regular, Consolas, "Courier New", monospace;
  font-size: 0.88em;
  background: var(--code-bg);
  border-radius: 4px;
  padding: 2px 5px;
}
.post-body pre {
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 12px 14px;
  overflow-x: auto;
  line-height: 1.5;
}
.post-body pre code { background: none; padding: 0; font-size: 0.85rem; }

/* pygments highlight tokens (class-based, no inline styles) */
.highlight .k, .highlight .kn, .highlight .ow { color: #cf222e; }
.highlight .s, .highlight .s1, .highlight .s2, .highlight .sd,
.highlight .se, .highlight .sh, .highlight .si, .highlight .sa,
.highlight .sb, .highlight .sx, .highlight .dl { color: #0a3069; }
.highlight .c, .highlight .c1, .highlight .cm, .highlight .cs,
.highlight .ch, .highlight .cp { color: #6e7781; font-style: italic; }
.highlight .nf, .highlight .fm { color: #8250df; }
.highlight .nc, .highlight .ne { color: #953800; }
.highlight .mi, .highlight .mf, .highlight .mh, .highlight .mo,
.highlight .mh, .highlight .mb, .highlight .mx { color: #0550ae; }
.highlight .nd { color: #8250df; }
.highlight .nb, .highlight .bp { color: #0550ae; }
.highlight .o { color: #24292f; }
.highlight .err { color: #cf222e; }

/* footer */
.site-footer {
  border-top: 1px solid var(--border);
  margin-top: 56px;
  padding: 20px 0 28px;
  color: var(--text-light);
  font-size: 0.85rem;
  text-align: center;
}
.site-footer .beian a {
  color: var(--text-light);
  margin: 0 8px;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.site-footer .beian img { height: 14px; width: 14px; vertical-align: -2px; }
.site-footer p { margin: 8px 0 0; }

@media (max-width: 560px) {
  .hero h1 { font-size: 1.5rem; }
  .post h1 { font-size: 1.4rem; }
  .nav-links a { margin-left: 12px; }
}