:root {
  --bg: #fbf7f2;
  --bg-warm: #f4ece1;
  --card: #ffffff;
  --ink: #261c14;
  --ink2: #6b5d50;
  --ink3: #a89889;
  --terra: #c5532e;
  --line: #e9dfd1;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: 760px;
  margin: 0 auto;
  padding: 48px 24px 96px;
}

header {
  text-align: center;
  margin-bottom: 48px;
}

header h1 {
  font-size: 56px;
  font-weight: 400;
  font-style: italic;
  letter-spacing: -1px;
  color: var(--ink);
  font-family: "Instrument Serif", Georgia, serif;
}

header .subtitle {
  color: var(--ink2);
  font-size: 14px;
  letter-spacing: 1.6px;
  text-transform: uppercase;
  margin-top: 8px;
}

.back {
  display: inline-block;
  color: var(--terra);
  text-decoration: none;
  font-size: 14px;
  margin-bottom: 24px;
}

.back:hover {
  text-decoration: underline;
}

.links {
  display: grid;
  gap: 16px;
  margin-bottom: 48px;
}

.card {
  display: block;
  background: var(--card);
  border-radius: 16px;
  padding: 24px;
  text-decoration: none;
  color: var(--ink);
  border: 1px solid var(--line);
  transition: transform 0.15s ease, border-color 0.15s ease;
}

.card:hover {
  transform: translateY(-2px);
  border-color: var(--terra);
}

.card h2 {
  font-size: 22px;
  margin-bottom: 8px;
}

.card p {
  color: var(--ink2);
  font-size: 15px;
}

.doc-content {
  background: var(--card);
  border-radius: 16px;
  padding: 32px;
  border: 1px solid var(--line);
}

.doc-content h1 {
  font-size: 36px;
  margin-bottom: 24px;
  font-weight: 600;
  letter-spacing: -0.5px;
}

.doc-content h2 {
  font-size: 24px;
  margin-top: 40px;
  margin-bottom: 12px;
  font-weight: 600;
}

.doc-content h3 {
  font-size: 18px;
  margin-top: 24px;
  margin-bottom: 8px;
  color: var(--ink2);
  font-weight: 600;
}

.doc-content p {
  margin-bottom: 16px;
  color: var(--ink);
}

.doc-content ul,
.doc-content ol {
  margin-bottom: 16px;
  padding-left: 24px;
}

.doc-content li {
  margin-bottom: 6px;
}

.doc-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0 24px;
  font-size: 14px;
}

.doc-content th,
.doc-content td {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

.doc-content th {
  background: var(--bg-warm);
  font-weight: 600;
}

.doc-content code {
  background: var(--bg-warm);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 14px;
  font-family: ui-monospace, SFMono-Regular, monospace;
}

.doc-content a {
  color: var(--terra);
}

.doc-content hr {
  border: none;
  border-top: 1px solid var(--line);
  margin: 32px 0;
}

.doc-content strong {
  font-weight: 600;
  color: var(--ink);
}

.doc-content blockquote {
  border-left: 3px solid var(--terra);
  padding-left: 16px;
  margin: 16px 0;
  color: var(--ink2);
}

footer {
  text-align: center;
  margin-top: 64px;
  color: var(--ink3);
  font-size: 13px;
  line-height: 1.8;
}

footer a {
  color: var(--ink2);
}

@media (max-width: 600px) {
  .container {
    padding: 24px 16px 64px;
  }
  header h1 {
    font-size: 40px;
  }
  .doc-content {
    padding: 20px;
  }
  .doc-content h1 {
    font-size: 28px;
  }
  .doc-content h2 {
    font-size: 20px;
  }
  .doc-content table {
    font-size: 12px;
  }
}