:root {
  --bg: #f4f1ea;
  --paper: #fffdf8;
  --ink: #1f1a17;
  --muted: #6d6259;
  --line: #d9cfbf;
  --accent: #a33b20;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: linear-gradient(180deg, #efe7da 0%, var(--bg) 100%);
  color: var(--ink);
  font-family: Georgia, "Times New Roman", serif;
  line-height: 1.7;
}
.shell {
  width: min(860px, calc(100vw - 32px));
  margin: 0 auto;
}
.site-header {
  padding: 40px 0 24px;
  border-bottom: 1px solid var(--line);
}
.site-header h1 {
  margin: 0;
  font-size: 40px;
}
.site-header p, .meta, .back-link {
  color: var(--muted);
}
.site-nav {
  display: flex;
  gap: 20px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}
.site-nav a {
  font-size: 16px;
}
.section-block h2 {
  font-size: 22px;
  margin: 0 0 16px;
  padding-top: 28px;
  color: var(--muted);
}
.post-list {
  display: grid;
  gap: 18px;
  padding: 28px 0 48px;
}
.post-card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 22px 24px;
}
a {
  color: var(--accent);
  text-decoration: none;
}
a:hover { text-decoration: underline; }
.article-body {
  padding: 28px 0 64px;
}
.article-body img {
  max-width: 100%;
}
.article-body pre {
  overflow: auto;
  padding: 12px;
  background: #f6efe4;
  border-radius: 12px;
}
.pagination {
  display: flex;
  justify-content: space-between;
  padding: 24px 0;
}
.pagination a {
  font-size: 18px;
}
.site-footer {
  border-top: 1px solid var(--line);
  padding: 24px 0;
  margin-top: 48px;
}
.site-footer p {
  color: var(--muted);
  font-size: 14px;
}