:root {
  --bg: #fafaf7;
  --fg: #2b2e33;
  --muted: #6b6f76;
  --faint: #6f727a;
  --card: #ffffff;
  --border: #e6e4df;
  --border-strong: #d4d1ca;
  --accent: #4f5bd5;
  --accent-soft: #eef0fb;
  --tag: #f1efe9;
  --code: #f3f1ec;
  --shadow: 0 1px 2px rgba(20,20,30,0.04), 0 8px 24px rgba(20,20,30,0.04);
}

* { box-sizing: border-box; }

html, body { margin: 0; padding: 0; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--fg);
  line-height: 1.65;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3 { font-family: "Iowan Old Style", "Palatino Linotype", "Book Antiqua", Palatino, Georgia, serif; }

.container { max-width: 680px; margin: 0 auto; padding: 0 24px; }

.site-header {
  position: sticky; top: 0; z-index: 10;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  padding: 20px 0 16px;
}
.site-title {
  margin: 0;
  font-size: 26px;
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.1;
}
.site-tagline {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 13px;
  letter-spacing: 0.01em;
}

.timeline { padding: 40px 0 96px; display: flex; flex-direction: column; gap: 32px; }

.card {
  position: relative;
  padding: 4px 0 32px;
  border-bottom: 1px solid var(--border);
  transition: border-color 0.2s ease;
}
.card:last-child { border-bottom: none; }

.card-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 10px;
  flex-wrap: wrap;
}
.card-date {
  color: var(--faint);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-variant-numeric: tabular-nums;
}
.card-title {
  margin: 0 0 10px;
  font-size: 22px;
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: -0.015em;
}
.card-title a {
  color: var(--fg);
  text-decoration: none;
  background-image: linear-gradient(var(--accent), var(--accent));
  background-size: 0% 1.5px;
  background-position: 0 100%;
  background-repeat: no-repeat;
  transition: background-size 0.25s ease, color 0.15s ease;
  padding-bottom: 1px;
}
.card-title a:hover {
  color: var(--accent);
  background-size: 100% 1.5px;
}

.card-desc {
  color: var(--muted);
  margin: 0 0 14px;
  font-size: 16px;
  line-height: 1.6;
}
.card-body {
  color: var(--fg);
  margin: 0 0 14px;
  font-size: 16px;
}
.card-body p { margin: 0 0 12px; }
.card-body p:last-child { margin-bottom: 0; }
.card-body pre {
  background: var(--code);
  padding: 14px 16px;
  border-radius: 8px;
  overflow-x: auto;
  font-size: 13.5px;
  line-height: 1.5;
  border: 1px solid var(--border);
}
.card-body code {
  background: var(--code);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.88em;
  font-family: "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;
}
.card-body pre code { background: none; padding: 0; font-family: inherit; }
.card-body a { color: var(--accent); text-decoration: none; border-bottom: 1px solid transparent; transition: border-color 0.15s; }
.card-body a:hover { border-bottom-color: var(--accent); }

.card-image {
  margin: 16px 0;
  border-radius: 10px;
  max-width: 100%;
  display: block;
  border: 1px solid var(--border);
}

.card-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 14px; }
.tag {
  background: var(--tag);
  color: var(--muted);
  font-size: 11.5px;
  font-weight: 500;
  padding: 3px 10px;
  border-radius: 999px;
  letter-spacing: 0.01em;
  transition: background 0.15s, color 0.15s;
}
.tag:hover { background: var(--accent-soft); color: var(--accent); }

.empty, .loading, .error {
  color: var(--muted);
  text-align: center;
  padding: 64px 0;
  font-style: italic;
  font-family: "Iowan Old Style", Georgia, serif;
  font-size: 18px;
}

.site-footer {
  border-top: 1px solid var(--border);
  padding: 28px 0 40px;
  color: var(--faint);
  font-size: 12px;
  letter-spacing: 0.02em;
}
.footer-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}
.footer-rss {
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.15s, border-color 0.15s;
  text-align: right;
}
.footer-rss:hover {
  color: var(--fg);
  border-bottom-color: var(--muted);
}
.site-footer code {
  background: var(--code);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 11.5px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1a1c22;
    --fg: #e4e2dd;
    --muted: #9a9790;
    --faint: #8f8c86;
    --card: #20222a;
    --border: #2d2e34;
    --border-strong: #33343a;
    --accent: #8b93ff;
    --accent-soft: #1e2030;
    --tag: #23252d;
    --code: #1e2027;
    --shadow: 0 1px 2px rgba(0,0,0,0.3);
  }
}

@media (max-width: 520px) {
  body { font-size: 16px; }
  .container { padding: 0 18px; }
  .card-title { font-size: 19px; }
  .site-title { font-size: 22px; }
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: none; }
}
.card { animation: fadeUp 0.45s ease both; }

@media (prefers-reduced-motion: reduce) {
  .card { animation: none; }
  .card-title a { transition: none; }
}

.card-desc a { color: var(--accent); text-decoration: none; border-bottom: 1px solid transparent; transition: border-color 0.15s; }
.card-desc a:hover { border-bottom-color: var(--accent); }

.header-row { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.site-title a { color: inherit; text-decoration: none; }
.site-nav { display: flex; gap: 14px; font-size: 13px; }
.site-nav a { color: var(--muted); text-decoration: none; letter-spacing: 0.02em; transition: color 0.15s; }
.site-nav a:hover { color: var(--accent); }

.about { padding: 40px 0 96px; }
.about-title { font-size: 32px; margin: 0 0 24px; letter-spacing: -0.02em; }
.about p { margin: 0 0 16px; color: var(--fg); }
.about h2 { font-size: 20px; margin: 32px 0 12px; }
.links { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 8px; }
.links a { color: var(--accent); text-decoration: none; border-bottom: 1px solid transparent; transition: border-color 0.15s; }
.links a:hover { border-bottom-color: var(--accent); }

.card-body ul, .see-also ul { margin: 0 0 12px 20px; padding: 0; }
.card-body ul li, .see-also ul li { margin: 4px 0; }
.card-body h3, .card-body h4 { font-family: "Iowan Old Style", Georgia, serif; margin: 16px 0 8px; letter-spacing: -0.01em; }
.card-body h3 { font-size: 18px; }
.card-body h4 { font-size: 16px; }
.see-also { margin-top: 14px; padding-top: 12px; border-top: 1px dashed var(--border); }
.see-also-title { color: var(--faint); font-size: 11px; font-weight: 600; letter-spacing: 0.12em; text-transform: uppercase; margin: 0 0 6px; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; }
.site-tagline { font-family: "Iowan Old Style", "Palatino Linotype", "Book Antiqua", Palatino, Georgia, serif; font-style: italic; }
.card-meta, .card-date, .tag, .site-nav, .site-footer, .see-also-title, .site-footer code {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

.card-desc {
  font-family: "Iowan Old Style", "Palatino Linotype", "Book Antiqua", Palatino, Georgia, serif;
  font-style: italic;
  font-size: 18px;
}

.card-desc, .card-body p, .about p {
  text-align: justify;
  hyphens: auto;
}
.card-body pre, .card-body ul, .card-body li, .see-also {
  text-align: left;
  hyphens: none;
}