:root {
  --bg: #f6f6f4;
  --paper: #ffffff;
  --text: #171717;
  --muted: #5a5a5a;
  --line: #d9d9d9;
  --accent: #222222;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

.wrap {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 20px;
}

.site-header {
  background: var(--paper);
  border-bottom: 1px solid var(--line);
  padding: 40px 0 24px;
}

.site-header h1 {
  margin: 0 0 8px;
  font-size: 2.1rem;
}

.tagline {
  margin: 0 0 14px;
  color: var(--muted);
}

nav a {
  margin-right: 18px;
  color: var(--accent);
  text-decoration: none;
}

nav a:hover,
a:hover {
  text-decoration: underline;
}

main {
  padding: 28px 20px 48px;
}

.card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 22px;
  margin-bottom: 18px;
}

.paper-list {
  list-style: none;
  padding-left: 0;
  margin: 0;
}

.paper-list li {
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}

.paper-list li:last-child {
  border-bottom: 0;
}

.meta,
.muted {
  color: var(--muted);
  font-size: 0.95rem;
}

h1, h2, h3 {
  line-height: 1.25;
}

.paper-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 18px 0;
}

.button {
  display: inline-block;
  padding: 10px 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fafafa;
  color: var(--text);
  text-decoration: none;
}

.button:hover {
  background: #f0f0f0;
  text-decoration: none;
}

code, pre {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}

pre {
  overflow-x: auto;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fafafa;
}