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

:root {
  --accent: #0ea5e9;
  --accent-dark: #0284c7;
  --bg: #f8fafc;
  --surface: #ffffff;
  --text: #1a1a2e;
  --text-muted: #64748b;
  --border: #e2e8f0;
  --code-bg: #f1f5f9;
  --font-sans: 'DM Sans', system-ui, sans-serif;
  --font-display: 'DM Sans', system-ui, sans-serif;
  --font-mono: 'DM Mono', 'Fira Code', monospace;
}

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  font-size: 1rem;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-dark); text-decoration: underline; }

/* ── Header ── */
.site-header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}
.header-inner {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 1.5rem;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}
.site-logo {
  display: flex;
  align-items: center;
  text-decoration: none;
  flex-shrink: 0;
}
.site-logo img {
  height: 40px;
  width: auto;
  display: block;
}
.site-logo:hover { text-decoration: none; opacity: 0.85; }
.header-nav {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  font-size: 0.9rem;
}
.header-nav a { color: var(--text-muted); font-weight: 500; }
.header-nav a:hover { color: var(--text); text-decoration: none; }
.btn-primary {
  background: var(--accent);
  color: #fff !important;
  padding: 0.45rem 1rem;
  border-radius: 6px;
  font-weight: 600;
  font-size: 0.875rem;
  transition: background 0.2s;
  white-space: nowrap;
}
.btn-primary:hover { background: var(--accent-dark) !important; text-decoration: none !important; }

/* ── Article layout ── */
.article-main {
  max-width: 900px;
  margin: 3rem auto;
  padding: 0 1.5rem;
}
.article-wrap {
  background: var(--surface);
  border-radius: 12px;
  border: 1px solid var(--border);
  padding: 3rem;
}

/* ── Article header ── */
.breadcrumb {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 1.25rem;
}
.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--accent); text-decoration: none; }

.article-title {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
  color: var(--text);
}
.article-meta {
  color: var(--text-muted);
  font-size: 0.875rem;
  margin-bottom: 2rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--border);
}

/* ── Article content ── */
.article-content h2 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  margin: 2.5rem 0 0.75rem;
  color: var(--text);
  letter-spacing: -0.01em;
}
.article-content h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin: 1.75rem 0 0.5rem;
  color: var(--text);
}
.article-content p { margin-bottom: 1.25rem; }
.article-content ul, .article-content ol {
  margin: 0 0 1.25rem 1.5rem;
}
.article-content li { margin-bottom: 0.4rem; }
.article-content strong { font-weight: 600; color: var(--text); }

.article-content code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  background: var(--code-bg);
  border: 1px solid var(--border);
  padding: 0.15em 0.4em;
  border-radius: 4px;
}
.article-content pre {
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.25rem;
  overflow-x: auto;
  margin: 1.5rem 0;
}
.article-content pre code {
  background: none;
  border: none;
  padding: 0;
  font-size: 0.875rem;
  line-height: 1.6;
}

.callout {
  background: #eff6ff;
  border-left: 4px solid var(--accent);
  border-radius: 0 8px 8px 0;
  padding: 1rem 1.25rem;
  margin: 1.5rem 0;
  font-size: 0.95rem;
}
.callout strong { color: var(--accent-dark); }

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-size: 0.9rem;
}
.comparison-table th, .comparison-table td {
  padding: 0.75rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
}
.comparison-table th {
  background: var(--bg);
  font-weight: 600;
  color: var(--text-muted);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.comparison-table tr:last-child td { border-bottom: none; }
.tag-good { color: #059669; font-weight: 600; }
.tag-bad  { color: #dc2626; font-weight: 600; }
.tag-ok   { color: #d97706; font-weight: 600; }

/* ── CTA block ── */
.article-cta {
  margin-top: 3rem;
  padding: 2rem;
  background: linear-gradient(135deg, #0ea5e9 0%, #0284c7 100%);
  border-radius: 12px;
  text-align: center;
  color: #fff;
}
.article-cta h2 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 800;
  margin-bottom: 0.5rem;
  color: #fff;
}
.article-cta p { color: rgba(255,255,255,0.9); margin-bottom: 1.25rem; }
.article-cta .btn-cta {
  display: inline-block;
  background: #fff;
  color: var(--accent-dark) !important;
  font-weight: 700;
  padding: 0.75rem 1.75rem;
  border-radius: 8px;
  font-size: 1rem;
  transition: opacity 0.2s;
  text-decoration: none !important;
}
.article-cta .btn-cta:hover { opacity: 0.9; }

/* ── Blog listing ── */
.blog-hero {
  text-align: center;
  padding: 4rem 1.5rem 3rem;
}
.blog-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 0.75rem;
}
.blog-hero p { color: var(--text-muted); font-size: 1.1rem; max-width: 520px; margin: 0 auto; }

.blog-grid {
  max-width: 900px;
  margin: 0 auto 4rem;
  padding: 0 1.5rem;
  display: grid;
  gap: 1.5rem;
}
.blog-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.75rem;
  transition: border-color 0.2s, box-shadow 0.2s;
  display: block;
  color: var(--text);
  text-decoration: none;
}
.blog-card:hover {
  border-color: var(--accent);
  box-shadow: 0 4px 16px rgba(14,165,233,0.1);
  text-decoration: none;
  color: var(--text);
}
.blog-card-tag {
  display: inline-block;
  background: #eff6ff;
  color: var(--accent-dark);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.75rem;
}
.blog-card h2 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: 0.5rem;
  line-height: 1.3;
}
.blog-card p { color: var(--text-muted); font-size: 0.925rem; margin: 0; }
.blog-card-meta { color: var(--text-muted); font-size: 0.8rem; margin-top: 0.75rem; }

/* ── Footer ── */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 1.5rem;
  margin-top: auto;
}
.footer-inner {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 2rem;
  font-size: 0.875rem;
  color: var(--text-muted);
}
.footer-nav { display: flex; gap: 1.5rem; }
.footer-nav a { color: var(--text-muted); }
.footer-nav a:hover { color: var(--accent); text-decoration: none; }

/* ── Responsive ── */
@media (max-width: 640px) {
  .article-wrap { padding: 1.5rem; }
  .article-main { margin: 1.5rem auto; }
  .header-nav .btn-primary { display: none; }
  .footer-inner { flex-direction: column; text-align: center; gap: 1rem; }
}