@font-face {
  font-family: "AnthropicSans";
  src: url("/fonts/AnthropicSans-Roman-Web.woff2") format("woff2"),
       url("/fonts/AnthropicSans-Roman-Web.woff") format("woff");
  font-weight: 400; font-style: normal; font-display: swap;
}
@font-face {
  font-family: "AnthropicSerif";
  src: url("/fonts/AnthropicSerif-Roman-Web.woff2") format("woff2"),
       url("/fonts/AnthropicSerif-Roman-Web.woff") format("woff");
  font-weight: 400; font-style: normal; font-display: swap;
}
@font-face {
  font-family: "AnthropicMono";
  src: url("/fonts/AnthropicMono-Roman-Web.woff2") format("woff2"),
       url("/fonts/AnthropicMono-Roman-Web.woff") format("woff");
  font-weight: 400; font-style: normal; font-display: swap;
}

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

:root {
  --accent: #c6613f;
  --accent-dark: #a84e30;
  --text: #141413;
  --text-secondary: #73726c;
  --bg: #faf9f7;
  --bg-card: #ffffff;
  --border: rgba(31, 30, 29, 0.12);
  --radius: 12px;
}

body {
  font-family: "AnthropicSans", -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }

/* Nav */
nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 40px;
  max-width: 1000px;
  margin: 0 auto;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 17px;
  font-weight: 600;
  color: var(--text);
  letter-spacing: -0.3px;
}

.nav-logo img { width: 24px; height: 24px; }

.nav-blog { font-size: 14px; color: var(--text-secondary); }
.nav-blog a { color: var(--accent); }
.nav-blog a:hover { text-decoration: underline; }

/* Blog index */
.blog-index {
  max-width: 720px;
  margin: 0 auto;
  padding: 60px 24px 96px;
}

.blog-index h1 {
  font-family: "AnthropicSerif", serif;
  font-size: clamp(28px, 5vw, 40px);
  font-weight: 400;
  letter-spacing: -0.5px;
  margin-bottom: 12px;
}

.blog-index > p {
  font-size: 16px;
  color: var(--text-secondary);
  margin-bottom: 48px;
}

.post-list { display: flex; flex-direction: column; gap: 12px; }

.post-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 28px;
  transition: box-shadow 0.2s;
  display: block;
}

.post-card:hover { box-shadow: 0 4px 20px rgba(0,0,0,0.06); }

.post-card-meta {
  font-size: 12px;
  color: var(--text-secondary);
  margin-bottom: 8px;
  display: flex;
  gap: 12px;
  align-items: center;
}

.post-card-tag {
  background: rgba(198, 97, 63, 0.08);
  color: var(--accent);
  border: 1px solid rgba(198, 97, 63, 0.2);
  border-radius: 99px;
  padding: 2px 8px;
  font-size: 11px;
  font-weight: 500;
}

.post-card h2 {
  font-size: 17px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 8px;
  letter-spacing: -0.2px;
  line-height: 1.3;
}

.post-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Article */
.article {
  max-width: 720px;
  margin: 0 auto;
  padding: 60px 24px 96px;
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 32px;
  flex-wrap: wrap;
}

.article-tag {
  background: rgba(198, 97, 63, 0.08);
  color: var(--accent);
  border: 1px solid rgba(198, 97, 63, 0.2);
  border-radius: 99px;
  padding: 3px 10px;
  font-size: 12px;
  font-weight: 500;
}

.article-date { font-size: 13px; color: var(--text-secondary); }
.article-read { font-size: 13px; color: var(--text-secondary); }

.article h1 {
  font-family: "AnthropicSerif", serif;
  font-size: clamp(28px, 5vw, 42px);
  font-weight: 400;
  letter-spacing: -0.5px;
  line-height: 1.15;
  margin-bottom: 20px;
  color: var(--text);
}

.article-lead {
  font-size: 18px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--border);
}

.article h2 {
  font-family: "AnthropicSerif", serif;
  font-size: 22px;
  font-weight: 400;
  letter-spacing: -0.3px;
  margin: 40px 0 16px;
  color: var(--text);
}

.article h3 {
  font-size: 16px;
  font-weight: 600;
  margin: 28px 0 10px;
  color: var(--text);
}

.article p { font-size: 16px; line-height: 1.75; margin-bottom: 20px; color: var(--text); }

.article ul, .article ol {
  margin: 0 0 20px 24px;
}

.article li {
  font-size: 16px;
  line-height: 1.75;
  margin-bottom: 8px;
  color: var(--text);
}

.article code {
  font-family: "AnthropicMono", "SF Mono", monospace;
  font-size: 13px;
  background: rgba(0,0,0,0.05);
  padding: 2px 6px;
  border-radius: 4px;
  color: var(--text);
  word-break: break-all;
}

.article pre {
  background: #1a1a18;
  border-radius: 10px;
  padding: 20px 24px;
  margin: 24px 0;
  overflow-x: auto;
}

.article pre code {
  background: none;
  color: #e8e6e0;
  font-size: 13px;
  padding: 0;
  line-height: 1.7;
  word-break: normal;
}

.article blockquote {
  border-left: 3px solid var(--accent);
  padding: 12px 20px;
  margin: 24px 0;
  background: rgba(198, 97, 63, 0.04);
  border-radius: 0 8px 8px 0;
}

.article blockquote p { margin-bottom: 0; color: var(--text-secondary); font-style: italic; }

.article-cta {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 32px;
  margin: 40px 0;
  text-align: center;
}

.article-cta h3 { font-size: 18px; font-weight: 600; margin-bottom: 8px; }
.article-cta p { font-size: 14px; color: var(--text-secondary); margin-bottom: 20px; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 20px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.15s;
  border: none;
  font-family: inherit;
  text-decoration: none;
}

.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-dark); }

/* Footer */
footer {
  border-top: 1px solid var(--border);
  padding: 32px 40px;
  max-width: 1000px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

footer p { font-size: 13px; color: var(--text-secondary); }
footer a { font-size: 13px; color: var(--text-secondary); transition: color 0.15s; }
footer a:hover { color: var(--text); }
.footer-links { display: flex; gap: 24px; }

@media (max-width: 600px) {
  nav { padding: 16px 20px; }
  .article, .blog-index { padding: 40px 20px 64px; }
  footer { padding: 24px 20px; flex-direction: column; align-items: flex-start; gap: 12px; }
}