:root {
  --bg: #FAFAF9;
  --ink: #0A0A0A;
  --muted: #6B6B6B;
  --line: #E7E5E4;
  --accent: #1E40AF;
  --accent-hover: #1E3A8A;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--ink);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
.container {
  max-width: 880px;
  margin: 0 auto;
  padding: 0 24px;
}
.narrow {
  max-width: 680px;
  margin: 0 auto;
  padding: 0 24px;
}
nav {
  padding: 28px 0;
  border-bottom: 1px solid var(--line);
}
nav .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.brand {
  font-weight: 600;
  font-size: 16px;
  letter-spacing: -0.01em;
}
.brand a { color: inherit; text-decoration: none; }
.nav-cta {
  font-size: 15px;
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid var(--ink);
  padding-bottom: 2px;
  transition: opacity 0.2s;
}
.nav-cta:hover { opacity: 0.6; }

section { padding: 96px 0; }
@media (max-width: 640px) {
  section { padding: 64px 0; }
}

h1 {
  font-family: 'Instrument Serif', Georgia, serif;
  font-weight: 400;
  font-size: clamp(40px, 6vw, 64px);
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin: 0 0 24px;
}
h2 {
  font-family: 'Instrument Serif', Georgia, serif;
  font-weight: 400;
  font-size: clamp(28px, 4vw, 40px);
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin: 0 0 32px;
}
h3 {
  font-size: 17px;
  font-weight: 600;
  letter-spacing: -0.005em;
  margin: 0 0 8px;
}
p {
  color: var(--ink);
  font-size: 17px;
  line-height: 1.65;
  margin: 0 0 20px;
}
.lede {
  font-size: 20px;
  line-height: 1.55;
  color: var(--muted);
  margin: 0 0 40px;
}
.eyebrow {
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 24px;
}

.btn {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  text-decoration: none;
  padding: 14px 24px;
  font-size: 15px;
  font-weight: 500;
  border-radius: 4px;
  transition: background 0.2s;
}
.btn:hover { background: var(--accent-hover); }
.btn-secondary {
  display: inline-block;
  color: var(--ink);
  text-decoration: none;
  font-size: 15px;
  font-weight: 500;
  margin-left: 24px;
  border-bottom: 1px solid var(--ink);
  padding-bottom: 2px;
}
.btn-secondary:hover { opacity: 0.6; }

.hero { padding: 120px 0 96px; }
@media (max-width: 640px) {
  .hero { padding: 72px 0 64px; }
  .btn-secondary { margin-left: 0; margin-top: 16px; display: inline-block; }
}

.divider {
  height: 1px;
  background: var(--line);
  border: 0;
  margin: 0;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 48px;
}
@media (max-width: 768px) {
  .grid-3 { grid-template-columns: 1fr; gap: 40px; }
}
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}
@media (max-width: 768px) {
  .grid-2 { grid-template-columns: 1fr; }
}

.case-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 36px;
  background: #fff;
}
.case-label {
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 16px;
  font-weight: 500;
}
.case-headline {
  font-size: 20px;
  line-height: 1.4;
  letter-spacing: -0.01em;
  margin: 0 0 16px;
  color: var(--ink);
}
.case-result {
  font-weight: 600;
  color: var(--accent);
}

.step {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 32px;
  padding: 32px 0;
  border-top: 1px solid var(--line);
}
.step:last-child { border-bottom: 1px solid var(--line); }
.step-num {
  font-family: 'Instrument Serif', Georgia, serif;
  font-size: 32px;
  color: var(--accent);
  line-height: 1;
}
.step h3 { margin-bottom: 6px; font-size: 18px; }
.step p { color: var(--muted); margin: 0; }
@media (max-width: 640px) {
  .step { grid-template-columns: 1fr; gap: 8px; }
}

footer {
  padding: 48px 0;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 14px;
}
footer .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}
footer a { color: var(--muted); text-decoration: none; border-bottom: 1px solid var(--line); }
footer a:hover { color: var(--ink); }
.footer-links { display: flex; gap: 20px; flex-wrap: wrap; }
.footer-links a { border-bottom: 0; }

.cta-section {
  text-align: center;
  padding: 120px 0;
}
.cta-section .small {
  margin-top: 24px;
  font-size: 14px;
  color: var(--muted);
}
.cta-section .small a {
  color: var(--ink);
  border-bottom: 1px solid var(--line);
  text-decoration: none;
}

/* ---- Content / article pages ---- */
.breadcrumb {
  font-size: 13px;
  color: var(--muted);
  margin: 0 0 28px;
}
.breadcrumb a { color: var(--muted); text-decoration: none; border-bottom: 1px solid var(--line); }
.breadcrumb a:hover { color: var(--ink); }

.article-header { padding: 80px 0 56px; }
@media (max-width: 640px) { .article-header { padding: 56px 0 40px; } }
.article-header h1 { font-size: clamp(34px, 5vw, 52px); }

.prose { font-size: 17px; }
.prose h2 { margin-top: 8px; }
.prose h3 {
  font-size: 19px;
  margin: 40px 0 10px;
}
.prose p { margin: 0 0 20px; }
.prose ul, .prose ol { margin: 0 0 24px; padding-left: 22px; }
.prose li { margin: 0 0 10px; line-height: 1.6; }
.prose a { color: var(--accent); text-decoration: none; border-bottom: 1px solid var(--line); }
.prose a:hover { border-color: var(--accent); }
.prose strong { font-weight: 600; }
.prose blockquote {
  margin: 32px 0;
  padding: 4px 0 4px 24px;
  border-left: 3px solid var(--accent);
  color: var(--muted);
  font-size: 19px;
}
.prose blockquote p { margin-bottom: 0; }

.inline-cta {
  margin: 48px 0 8px;
  padding: 36px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
}
.inline-cta h3 { font-size: 20px; margin-bottom: 10px; }
.inline-cta p { color: var(--muted); margin-bottom: 20px; }

.faq-item { padding: 28px 0; border-top: 1px solid var(--line); }
.faq-item:last-child { border-bottom: 1px solid var(--line); }
.faq-item h3 { font-size: 18px; margin-bottom: 8px; }
.faq-item p { color: var(--muted); margin: 0; }

.related h2 { margin-bottom: 28px; }
.related-card {
  display: block;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 28px;
  background: #fff;
  text-decoration: none;
  color: var(--ink);
  transition: border-color 0.2s;
}
.related-card:hover { border-color: var(--accent); }
.related-card h3 { color: var(--accent); margin-bottom: 8px; }
.related-card p { color: var(--muted); font-size: 15px; margin: 0; }