:root {
  --bg: #eef1f6;
  --card-bg: #ffffff;
  --text-heading: #1a2233;
  --text-body: #5b6472;
  --border: #e2e6ed;
  --accent: #4655d6;
  --accent-hover: #3746c2;
  --radius-lg: 20px;
  --radius-pill: 999px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text-body);
  font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
  line-height: 1.6;
}

.wrap {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 24px;
}

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

h1, h2, h3 {
  color: var(--text-heading);
  font-weight: 800;
  line-height: 1.15;
  margin: 0 0 12px;
}

/* Header */
.site-header {
  background: #ffffff;
  border-bottom: 1px solid var(--border);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 18px;
  padding-bottom: 18px;
  gap: 16px;
}
.logo {
  font-weight: 800;
  font-size: 1.35rem;
  color: var(--accent);
}
.main-nav {
  display: flex;
  gap: 20px;
  flex: 1;
  margin-left: 32px;
}
.main-nav a {
  color: var(--text-body);
  font-weight: 500;
}
.header-actions {
  display: flex;
  gap: 10px;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 10px 22px;
  border-radius: var(--radius-pill);
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
}
.btn-primary {
  background: var(--accent);
  color: #ffffff;
}
.btn-primary:hover { background: var(--accent-hover); }
.btn-outline {
  background: #ffffff;
  color: var(--text-heading);
  border-color: var(--border);
}
.btn-outline:hover { border-color: var(--accent); color: var(--accent); }
.btn-lg { padding: 14px 30px; font-size: 1.05rem; }

/* Hero */
.hero {
  padding: 56px 24px 32px;
  text-align: center;
}
.hero h1 {
  font-size: 2.25rem;
}
.hero-sub {
  font-size: 1.1rem;
  max-width: 560px;
  margin: 0 auto;
}

/* Post list */
.post-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding-bottom: 56px;
}
.post-card {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  box-shadow: 0 1px 3px rgba(26, 34, 51, 0.06), 0 8px 24px rgba(26, 34, 51, 0.04);
}
.post-card-link {
  display: block;
  padding: 28px 32px;
}
.post-card h2 {
  font-size: 1.3rem;
  margin-bottom: 6px;
}
.post-meta {
  color: #8a93a3;
  font-size: 0.85rem;
  margin: 0 0 10px;
}
.post-excerpt { margin: 0 0 14px; }
.read-more {
  color: var(--accent);
  font-weight: 600;
  font-size: 0.9rem;
}

/* Single post */
.post-single {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  padding: 44px 48px;
  margin-top: 40px;
  box-shadow: 0 1px 3px rgba(26, 34, 51, 0.06), 0 8px 24px rgba(26, 34, 51, 0.04);
}
.post-header h1 { font-size: 2rem; }
.post-content p { margin: 0 0 18px; }
.post-content a { color: var(--accent); font-weight: 600; text-decoration: underline; }
.post-content h2 { margin-top: 32px; }

/* CTA card */
.cta-card {
  margin: 32px auto 64px;
}
.cta-inner {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  padding: 40px;
  text-align: center;
  box-shadow: 0 1px 3px rgba(26, 34, 51, 0.06), 0 8px 24px rgba(26, 34, 51, 0.04);
}
.cta-inner p { margin: 0 0 20px; }

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 24px 0 40px;
}
.footer-inner {
  display: flex;
  gap: 20px;
  font-size: 0.85rem;
  color: #8a93a3;
}
.footer-inner a:hover { color: var(--accent); }

@media (max-width: 640px) {
  .header-inner { flex-wrap: wrap; }
  .main-nav { margin-left: 0; order: 3; width: 100%; }
  .hero h1 { font-size: 1.8rem; }
  .post-single { padding: 28px 24px; }
}