:root {
  --bg: #f5f7fa;
  --card: #ffffff;
  --text: #1a1a2e;
  --muted: #6b7280;
  --accent: #3b82f6;
  --border: #e5e7eb;
  --success: #10b981;
  --error: #ef4444;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f172a;
    --card: #1e293b;
    --text: #f1f5f9;
    --muted: #94a3b8;
    --accent: #60a5fa;
    --border: #334155;
    --success: #34d399;
    --error: #f87171;
  }
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  padding: 2rem 1rem;
}
nav { text-align: center; margin-bottom: 2rem; }
nav a { color: var(--accent); text-decoration: none; font-weight: 600; font-size: 1rem; }
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 1rem;
  padding: 2rem;
  max-width: 720px;
  margin: 0 auto 2rem;
  box-shadow: 0 4px 24px rgba(0,0,0,0.08);
}
h1 { font-size: 1.75rem; margin-bottom: 1rem; }
h2 { font-size: 1.15rem; margin: 1.5rem 0 0.5rem; color: var(--accent); }
p { line-height: 1.75; font-size: 0.95rem; margin-bottom: 0.75rem; }
ul { padding-left: 1.5rem; margin-bottom: 0.75rem; }
ul li { line-height: 1.75; font-size: 0.95rem; margin-bottom: 0.25rem; }
a { color: var(--accent); }
.updated { color: var(--muted); font-size: 0.85rem; margin-bottom: 2rem; }
.example {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  padding: 1rem 1.25rem;
  font-family: monospace;
  font-size: 0.95rem;
  margin: 0.75rem 0;
}
.cta { text-align: center; margin-top: 1rem; }
.cta a {
  background: var(--accent);
  color: #fff;
  text-decoration: none;
  padding: 0.65rem 1.5rem;
  border-radius: 0.5rem;
  font-weight: 600;
  font-size: 0.95rem;
}
table { width: 100%; border-collapse: collapse; margin: 1rem 0; font-size: 0.9rem; }
th { background: var(--accent); color: #fff; padding: 0.65rem 1rem; text-align: left; }
td { padding: 0.65rem 1rem; border-bottom: 1px solid var(--border); }
tr:last-child td { border-bottom: none; }
footer { text-align: center; color: var(--muted); font-size: 0.8rem; padding-top: 1rem; }
footer a { color: var(--accent); text-decoration: none; }
.card { max-width: 720px; margin-bottom: 1.5rem; }
.article-footer { max-width: 720px; margin: 0 auto; }
.risk-table { width: 100%; border-collapse: collapse; margin: 1rem 0; font-size: 0.9rem; }
.risk-table th { background: var(--accent); color: #fff; padding: 0.65rem 1rem; text-align: left; }
.risk-table td { padding: 0.65rem 1rem; border-bottom: 1px solid var(--border); vertical-align: top; }
.risk-table tr:last-child td { border-bottom: none; }
.tag-yes { color: var(--error); font-weight: 600; }
.tag-no { color: var(--success); font-weight: 600; }
.method-card {
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  padding: 1.25rem 1.5rem;
  margin: 1rem 0;
  background: var(--bg);
}
.method-card h3 { font-size: 1rem; font-weight: 700; margin-bottom: 0.5rem; color: var(--accent); }
.method-meta { display: flex; gap: 1.5rem; font-size: 0.82rem; color: var(--muted); margin-bottom: 0.65rem; }
.method-meta span strong { color: var(--text); }
.callout {
  border-left: 4px solid var(--accent);
  padding: 0.85rem 1.25rem;
  background: var(--bg);
  border-radius: 0 0.5rem 0.5rem 0;
  margin: 1rem 0;
  font-size: 0.93rem;
}
.callout.warning { border-color: var(--error); }
.callout.safe { border-color: var(--success); }
.accuracy-table { width: 100%; border-collapse: collapse; margin: 1rem 0; font-size: 0.9rem; }
.accuracy-table th { background: var(--accent); color: #fff; padding: 0.65rem 1rem; text-align: left; }
.accuracy-table td { padding: 0.65rem 1rem; border-bottom: 1px solid var(--border); }
.accuracy-table tr:last-child td { border-bottom: none; }
.learn-section {
  width: 100%;
  max-width: 720px;
  margin-bottom: 1.5rem;
}
.learn-heading {
  font-size: 1rem;
  font-weight: 700;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.75rem;
}
.learn-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}
.learn-card {
  display: block;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  padding: 1rem 1.1rem;
  text-decoration: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}
.learn-card:hover {
  border-color: var(--accent);
  box-shadow: 0 2px 12px rgba(0,0,0,0.08);
}
.learn-card-title {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 0.35rem;
  line-height: 1.3;
}
.learn-card-desc {
  font-size: 0.8rem;
  color: var(--muted);
  line-height: 1.5;
}
.map-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 1rem;
  width: 100%;
  max-width: 540px;
  overflow: hidden;
  box-shadow: 0 4px 24px rgba(0,0,0,0.08);
  margin-bottom: 1.5rem;
}
.map-label {
  font-size: 0.85rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.75rem 1.5rem 0;
}
#ip-map {
  height: 220px;
  width: 100%;
}
.leaflet-container { background: var(--bg); }
.explainer-section {
  width: 75%;
  margin: 0 auto 1.5rem;
  text-align: center;
}
.explainer-section h2 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 0.65rem;
}
.explainer-section p {
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--muted);
}