:root {
  --background: #f7f5f0;
  --surface: #ffffff;
  --text: #1f242b;
  --muted: #66707c;
  --line: #dcd8cf;
  --accent: #172b4d;
  --max-width: 820px;
}

* { box-sizing: border-box; }

html { font-size: 17px; }

body {
  margin: 0;
  background: var(--background);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.68;
}

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

.container {
  width: min(calc(100% - 2rem), var(--max-width));
  margin: 0 auto;
}

.site-header {
  border-bottom: 1px solid var(--line);
  background: rgba(247, 245, 240, 0.96);
}

.header-inner {
  min-height: 70px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.site-title {
  color: var(--text);
  font-weight: 750;
  text-decoration: none;
  letter-spacing: -0.02em;
}

nav a { text-decoration: none; font-weight: 600; }

.hero { padding: 5.5rem 0 4rem; }
.page-header { padding: 4.5rem 0 2.5rem; }
.section { padding: 2rem 0 5rem; }

.eyebrow {
  margin: 0 0 0.8rem;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 750;
  letter-spacing: 0.12em;
}

h1, h2, h3 {
  line-height: 1.15;
  letter-spacing: -0.035em;
}

h1 { margin: 0 0 1.25rem; font-size: clamp(2.4rem, 8vw, 4.6rem); }
h2 { font-size: clamp(1.6rem, 5vw, 2.25rem); }
h3 { font-size: 1.35rem; }

.lead {
  max-width: 700px;
  color: #3f4852;
  font-size: 1.2rem;
}

.button {
  display: inline-block;
  margin-top: 1rem;
  padding: 0.8rem 1.05rem;
  border-radius: 8px;
  background: var(--accent);
  color: #fff;
  text-decoration: none;
  font-weight: 700;
}

.section-heading {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  border-bottom: 1px solid var(--line);
}

.article-list { display: grid; gap: 1rem; padding: 1.5rem 0 4rem; }

.article-card {
  padding: 1.4rem;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--surface);
}

.article-card h2, .article-card h3 { margin: 0.25rem 0 0.6rem; }
.article-card a { color: var(--text); text-decoration: none; }
.article-card a:hover { text-decoration: underline; }

.meta, .publication-meta {
  color: var(--muted);
  font-size: 0.85rem;
}

.publication { padding: 4.5rem 0 6rem; }
.publication-header { padding-bottom: 2rem; border-bottom: 1px solid var(--line); }
.publication-header h1 { font-size: clamp(2.2rem, 7vw, 4rem); }
.publication-meta { display: flex; flex-wrap: wrap; gap: 0.5rem 1.2rem; }

.content {
  padding-top: 2rem;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.08rem;
}

.content h2, .content h3 { margin-top: 2.4rem; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; }
.content blockquote { margin-left: 0; padding-left: 1rem; border-left: 3px solid var(--line); color: #4f5964; }
.content img { max-width: 100%; height: auto; }

.site-footer {
  padding: 2rem 0;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.85rem;
}

@media (max-width: 640px) {
  html { font-size: 16px; }
  .hero { padding-top: 3.5rem; }
  .section-heading { align-items: flex-start; flex-direction: column; padding-bottom: 1rem; }
}