:root {
  --color-primary: #1a6b52;
  --color-primary-dark: #134d3b;
  --color-primary-light: #e8f1ed;
  --color-accent: #d97757;
  --color-bg: #fefdf8;
  --color-surface: #ffffff;
  --color-text: #1a1a1a;
  --color-text-muted: #5a6b6e;
  --color-border: #e5e7eb;
  --color-warning-bg: #fef3e8;
  --color-warning-border: #d97757;
  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2rem;
  --space-5: 3rem;
  --space-6: 4rem;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.06);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.08);
}
[data-theme="dark"] {
  --color-bg: #0f1614;
  --color-surface: #1a2421;
  --color-text: #f0ebe0;
  --color-text-muted: #9ba8aa;
  --color-border: #2a3835;
  --color-primary-light: #1f3a30;
  --color-warning-bg: #2a1f15;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Satoshi', -apple-system, system-ui, sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3 { font-family: 'Zodiak', Georgia, serif; font-weight: 500; line-height: 1.2; letter-spacing: -0.02em; }
h1 em, h2 em { font-style: italic; color: var(--color-primary); }

.nav {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-2) 0;
  position: sticky; top: 0; z-index: 50;
}
.nav-inner {
  max-width: 1200px; margin: 0 auto; padding: 0 var(--space-3);
  display: flex; align-items: center; justify-content: space-between; gap: var(--space-3);
}
.nav-logo { display: flex; align-items: center; gap: var(--space-1); text-decoration: none; color: var(--color-text); font-weight: 700; }
.nav-back { color: var(--color-text-muted); text-decoration: none; font-size: 0.95rem; display: inline-flex; align-items: center; gap: 0.3rem; white-space: nowrap; }
.nav-back:hover { color: var(--color-primary); }
.theme-btn { background: transparent; border: 1px solid var(--color-border); border-radius: 999px; width: 36px; height: 36px; min-width: 36px; cursor: pointer; display: inline-flex; align-items: center; justify-content: center; color: var(--color-text); }

.container { max-width: 1100px; margin: 0 auto; padding: 0 var(--space-3); }
.article-container { max-width: 720px; margin: 0 auto; padding: 0 var(--space-3); }

.hero {
  padding: var(--space-6) 0 var(--space-4);
  text-align: left;
}
.eyebrow { color: var(--color-primary); text-transform: uppercase; letter-spacing: 0.12em; font-size: 0.78rem; font-weight: 700; margin-bottom: var(--space-2); }
.hero h1 { font-size: clamp(2.2rem, 6vw, 3.6rem); margin-bottom: var(--space-3); }
.hero-lede { font-size: 1.1rem; color: var(--color-text-muted); max-width: 680px; }

.disclaimer {
  background: var(--color-warning-bg);
  border: 1px solid var(--color-warning-border);
  border-left: 4px solid var(--color-warning-border);
  border-radius: var(--radius-sm);
  padding: var(--space-3);
  margin: var(--space-3) 0 var(--space-5);
  font-size: 0.92rem;
  color: var(--color-text);
}
.disclaimer strong { color: var(--color-warning-border); }

/* Blog index grid */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-3);
  margin-bottom: var(--space-6);
}
.blog-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-3);
  box-shadow: var(--shadow-sm);
  display: flex; flex-direction: column;
  text-decoration: none;
  color: var(--color-text);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.blog-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
.blog-card h3 { font-size: 1.3rem; margin: var(--space-1) 0 var(--space-2); line-height: 1.3; }
.blog-card p { color: var(--color-text-muted); margin-bottom: var(--space-2); flex: 1; font-size: 0.95rem; }
.tag {
  display: inline-block; padding: 2px 10px; background: var(--color-primary-light);
  color: var(--color-primary); border-radius: 999px; font-size: 0.75rem; font-weight: 600;
  align-self: flex-start;
}
.blog-meta { font-size: 0.78rem; color: var(--color-text-muted); margin-top: auto; }
.blog-meta .divider { margin: 0 0.35rem; }

/* Article page */
.article-hero {
  padding: var(--space-5) 0 var(--space-4);
}
.back-link {
  display: inline-flex; align-items: center; gap: 0.4rem;
  color: var(--color-text-muted); text-decoration: none; font-size: 0.92rem;
  margin-bottom: var(--space-3);
}
.back-link:hover { color: var(--color-primary); }
.article-category {
  display: inline-block; padding: 3px 12px; background: var(--color-primary-light);
  color: var(--color-primary); border-radius: 999px; font-size: 0.78rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: var(--space-2);
}
.article-hero h1 {
  font-size: clamp(1.9rem, 5vw, 2.8rem);
  margin-bottom: var(--space-2);
}
.article-meta {
  display: flex; flex-wrap: wrap; align-items: center; gap: 0.5rem;
  color: var(--color-text-muted); font-size: 0.9rem; margin-top: var(--space-2);
}
.article-meta .divider { margin: 0 0.15rem; }
.article-byline { font-weight: 600; color: var(--color-text); }
.article-review-date { font-size: 0.82rem; color: var(--color-text-muted); margin-top: var(--space-1); }

.article-body { padding-bottom: var(--space-6); }
.article-body h2 {
  font-size: 1.5rem; margin-top: var(--space-5); margin-bottom: var(--space-2);
}
.article-body h3 {
  font-size: 1.2rem; margin-top: var(--space-4); margin-bottom: var(--space-2);
}
.article-body p { margin-bottom: var(--space-3); }
.article-body ul, .article-body ol { margin: 0 0 var(--space-3) var(--space-3); }
.article-body li { margin-bottom: 0.5rem; }
.article-body strong { color: var(--color-text); }
.article-body table {
  width: 100%; border-collapse: collapse; margin: var(--space-3) 0;
  font-size: 0.92rem; display: block; overflow-x: auto; white-space: nowrap;
}
.article-body table th, .article-body table td {
  border: 1px solid var(--color-border); padding: 0.5rem 0.75rem; text-align: left;
}
.article-body table th { background: var(--color-primary-light); color: var(--color-primary); white-space: normal; }

.highlight-box {
  background: var(--color-primary-light);
  border-left: 4px solid var(--color-primary);
  border-radius: var(--radius-sm);
  padding: var(--space-3);
  margin: var(--space-4) 0;
}
.highlight-box strong { color: var(--color-primary-dark); }

.cta-box {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  padding: var(--space-4);
  margin: var(--space-5) 0;
  text-align: center;
}
.cta-box h3 { margin-bottom: var(--space-2); }
.cta-box p { color: var(--color-text-muted); margin-bottom: var(--space-3); }
.cta-btn {
  display: inline-block;
  background: var(--color-primary);
  color: #fff;
  padding: 0.85rem 2rem;
  border-radius: 999px;
  font-weight: 700;
  text-decoration: none;
  transition: background 0.2s ease;
}
.cta-btn:hover { background: var(--color-primary-dark); }

.references {
  margin-top: var(--space-5);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border);
}
.references h3 { font-size: 1.05rem; margin-bottom: var(--space-2); color: var(--color-text-muted); }
.reference-list { list-style: none; margin: 0; padding: 0; }
.reference-list li {
  font-size: 0.85rem; color: var(--color-text-muted); margin-bottom: var(--space-1);
  padding-left: var(--space-2); text-indent: -var(--space-2);
}
.reference-list a { color: var(--color-primary); text-decoration: none; }
.reference-list a:hover { text-decoration: underline; }

.footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: var(--space-4) 0;
  margin-top: var(--space-6);
  text-align: center;
  color: var(--color-text-muted);
  font-size: 0.85rem;
}
.footer a { color: var(--color-primary); text-decoration: none; }
.footer-legal { max-width: 800px; margin: 0 auto var(--space-2); font-size: 0.82rem; }

@media (max-width: 640px) {
  .container, .article-container { padding: 0 var(--space-2); }
  .hero { padding: var(--space-4) 0 var(--space-3); }
  .article-hero { padding: var(--space-3) 0 var(--space-2); }
  .blog-grid { grid-template-columns: 1fr; }
  .cta-box { padding: var(--space-3); }
  .nav-back span.nav-back-text { display: none; }
}