/* Blog post styles */
:root {
  --amber: #f59e0b;
  --amber-dark: #d97706;
  --slate-900: #0f172a;
  --slate-700: #334155;
  --slate-500: #64748b;
  --slate-200: #e2e8f0;
  --slate-100: #f1f5f9;
  --white: #ffffff;
  --font-head: 'Syne', system-ui, sans-serif;
  --font-body: 'Instrument Sans', system-ui, sans-serif;
}

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

body {
  font-family: var(--font-body);
  background: var(--slate-100);
  color: var(--slate-900);
  line-height: 1.6;
}

/* Nav */
.nav {
  background: var(--white);
  border-bottom: 1px solid var(--slate-200);
  padding: 0 24px;
  position: sticky;
  top: 0;
  z-index: 10;
}
.nav-inner {
  max-width: 900px;
  margin: 0 auto;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 18px;
  color: var(--slate-900);
  text-decoration: none;
}
.nav-links {
  display: flex;
  gap: 24px;
  align-items: center;
}
.nav-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--slate-500);
  text-decoration: none;
  transition: color 0.15s;
}
.nav-link:hover { color: var(--slate-900); }
.nav-link--active { color: var(--amber); }

/* Layout */
.blog-container {
  max-width: 900px;
  margin: 0 auto;
  padding: 48px 24px;
  display: grid;
  grid-template-columns: 1fr 260px;
  gap: 48px;
  align-items: start;
}

/* Article */
.blog-article {
  background: var(--white);
  border-radius: 12px;
  border: 1px solid var(--slate-200);
  overflow: hidden;
}

.blog-header {
  background: var(--slate-900);
  color: var(--white);
  padding: 40px 40px 32px;
}
.blog-category {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--amber);
  margin-bottom: 12px;
}
.blog-header h1 {
  font-family: var(--font-head);
  font-size: 32px;
  font-weight: 800;
  line-height: 1.2;
  color: var(--white);
  margin-bottom: 16px;
}
.blog-byline {
  font-size: 14px;
  color: var(--slate-500);
}

.blog-body {
  padding: 40px;
}
.blog-body p {
  font-size: 17px;
  line-height: 1.75;
  color: var(--slate-700);
  margin-bottom: 20px;
}
.blog-body h2 {
  font-family: var(--font-head);
  font-size: 22px;
  font-weight: 700;
  color: var(--slate-900);
  margin-top: 40px;
  margin-bottom: 16px;
}
.blog-body h3 {
  font-family: var(--font-head);
  font-size: 18px;
  font-weight: 600;
  color: var(--slate-900);
  margin-top: 28px;
  margin-bottom: 12px;
}
.blog-body hr {
  border: none;
  border-top: 1px solid var(--slate-200);
  margin: 40px 0;
}
.blog-body ol, .blog-body ul {
  margin: 0 0 20px 24px;
}
.blog-body li {
  font-size: 17px;
  line-height: 1.75;
  color: var(--slate-700);
  margin-bottom: 8px;
}
.blog-body strong { color: var(--slate-900); }

/* CTA box */
.blog-cta-box {
  background: var(--slate-900);
  border-radius: 10px;
  padding: 28px 32px;
  margin: 40px 0;
}
.blog-cta-box h3 {
  font-family: var(--font-head);
  font-size: 18px;
  font-weight: 700;
  color: var(--white);
  margin-top: 0 !important;
  margin-bottom: 12px;
}
.blog-cta-box p {
  font-size: 15px;
  color: var(--slate-200);
  margin-bottom: 8px;
}
.blog-cta-box--bottom {
  background: linear-gradient(135deg, var(--slate-900), #1e3a5f);
}
.cta-button {
  display: inline-block;
  background: var(--amber);
  color: var(--slate-900);
  font-weight: 600;
  font-size: 15px;
  padding: 10px 20px;
  border-radius: 6px;
  text-decoration: none;
  margin-top: 8px;
  transition: background 0.15s;
}
.cta-button:hover { background: var(--amber-dark); color: var(--slate-900); }
.cta-button--small { font-size: 14px; padding: 8px 16px; }

/* Sidebar */
.blog-sidebar { position: sticky; top: 80px; }
.sidebar-box {
  background: var(--white);
  border: 1px solid var(--slate-200);
  border-radius: 12px;
  padding: 24px;
}
.sidebar-box h4 {
  font-family: var(--font-head);
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 8px;
}
.sidebar-box p {
  font-size: 14px;
  color: var(--slate-500);
  margin-bottom: 16px;
  line-height: 1.5;
}

/* Footer */
.blog-footer {
  background: var(--white);
  border-top: 1px solid var(--slate-200);
  padding: 24px;
  text-align: center;
  font-size: 14px;
  color: var(--slate-500);
}
.blog-footer a { color: var(--slate-700); text-decoration: none; }
.blog-footer a:hover { color: var(--amber); }

/* Responsive */
@media (max-width: 768px) {
  .blog-container {
    grid-template-columns: 1fr;
    padding: 24px 16px;
  }
  .blog-sidebar { display: none; }
  .blog-header { padding: 28px 24px 24px; }
  .blog-header h1 { font-size: 24px; }
  .blog-body { padding: 28px 24px; }
  .blog-body p { font-size: 16px; }
  .blog-body h2 { font-size: 20px; }
}

/* Blog index list */
.blog-index-header {
  background: var(--white);
  border: 1px solid var(--slate-200);
  border-radius: 12px;
  padding: 32px;
  margin-bottom: 24px;
}
.blog-index-header h1 {
  font-family: var(--font-head);
  font-size: 28px;
  font-weight: 800;
  color: var(--slate-900);
  margin-bottom: 8px;
}
.blog-index-header p {
  font-size: 16px;
  color: var(--slate-500);
}
.blog-index { display: flex; flex-direction: column; gap: 16px; }
.blog-index-item {
  background: var(--white);
  border: 1px solid var(--slate-200);
  border-radius: 12px;
  padding: 24px;
  text-decoration: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}
.blog-index-item:hover {
  border-color: var(--amber);
  box-shadow: 0 4px 16px rgba(0,0,0,0.08);
}
.blog-index-category {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--amber);
  display: block;
  margin-bottom: 6px;
}
.blog-index-item h3 {
  font-family: var(--font-head);
  font-size: 18px;
  font-weight: 700;
  color: var(--slate-900);
  margin-bottom: 8px;
}
.blog-index-item p {
  font-size: 14px;
  color: var(--slate-500);
  line-height: 1.5;
  margin-bottom: 12px;
}
.blog-index-date {
  font-size: 12px;
  color: var(--slate-200);
}