:root {
  --bg: #faf9f7;
  --surface: #ffffff;
  --text: #1a1a1a;
  --muted: #6b6b6b;
  --accent: #c45c26;
  --border: #e8e4df;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.8;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 1.25rem 1.5rem;
}

.header-inner {
  max-width: 680px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
}

.site-title a {
  color: inherit;
  text-decoration: none;
  font-weight: 700;
  font-size: 1.2rem;
}

nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.9rem;
}

nav a:hover { color: var(--accent); }

main.article {
  flex: 1;
  max-width: 680px;
  margin: 0 auto;
  padding: 2.5rem 1.5rem 3rem;
  width: 100%;
}

main.article h1 {
  font-size: 1.85rem;
  margin-bottom: 0.5rem;
  line-height: 1.3;
}

.post-meta {
  color: var(--muted);
  font-size: 0.9rem;
  margin-bottom: 2rem;
}

main.article p {
  margin-bottom: 1.25rem;
}

footer {
  background: var(--surface);
  border-top: 1px solid var(--border);
  padding: 1.5rem;
  text-align: center;
  font-size: 0.85rem;
  color: var(--muted);
}

footer a {
  color: var(--muted);
  text-decoration: none;
}

footer a:hover { color: var(--accent); }

.footer-copy { margin-bottom: 0.5rem; }