:root {
  --bg: #ffffff;
  --ink: #14181f;
  --muted: #5b6470;
  --brand: #1f6feb;
  --brand-dark: #1450b0;
  --accent: #f4f7fb;
  --border: #e4e8ee;
  --radius: 12px;
  --maxw: 760px;
  font-synthesis: none;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 17px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }

/* Header */
.site-header {
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; background: var(--bg); z-index: 10;
}
.site-header .wrap {
  display: flex; align-items: center; justify-content: space-between;
  padding-top: 14px; padding-bottom: 14px;
}
.logo { font-weight: 800; font-size: 1.25rem; text-decoration: none; color: var(--ink); letter-spacing: -0.02em; }
.logo span { color: var(--brand); }
.site-header nav a { color: var(--muted); text-decoration: none; font-weight: 600; font-size: 0.95rem; }
.site-header nav a:hover { color: var(--brand); }

main { padding: 40px 0 60px; }

/* Hero */
.hero { padding: 28px 0 12px; }
.hero h1 { font-size: 2.4rem; line-height: 1.1; letter-spacing: -0.03em; margin: 0 0 12px; }
.lead { font-size: 1.2rem; color: var(--muted); margin: 0; }

h2 { font-size: 1.5rem; letter-spacing: -0.02em; margin: 2.2em 0 0.6em; }

/* Guide grid */
.guide-grid { list-style: none; padding: 0; margin: 18px 0 0; display: grid; gap: 12px; }
.guide-grid a {
  display: block; padding: 18px 20px; border: 1px solid var(--border);
  border-radius: var(--radius); text-decoration: none; color: var(--ink);
  transition: border-color .15s, transform .15s, box-shadow .15s;
}
.guide-grid a:hover { border-color: var(--brand); transform: translateY(-2px); box-shadow: 0 6px 20px rgba(31,111,235,.08); }
.kicker { display: block; font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted); font-weight: 700; }
.guide-title { display: block; font-size: 1.25rem; font-weight: 700; margin-top: 2px; text-transform: capitalize; }

/* Guide article */
.guide .kicker { margin-bottom: 4px; }
.guide h1 { font-size: 2.1rem; line-height: 1.12; letter-spacing: -0.03em; margin: 0 0 18px; }
.guide .intro { font-size: 1.18rem; color: #313842; }
.guide-section p { color: #2a313b; }

/* Affiliate disclosure */
.disclosure {
  background: var(--accent); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 14px 16px; font-size: 0.92rem; color: var(--muted);
  margin: 18px 0;
}

/* CTA */
.cta {
  background: var(--accent); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 22px; margin: 28px 0;
}
.cta p { margin: 0 0 14px; font-weight: 600; }
.cta-button {
  display: inline-block; background: var(--brand); color: #fff; text-decoration: none;
  padding: 12px 22px; border-radius: 999px; font-weight: 700;
  transition: background .15s;
}
.cta-button:hover { background: var(--brand-dark); }

/* FAQs */
.faqs details {
  border: 1px solid var(--border); border-radius: var(--radius);
  padding: 14px 16px; margin: 10px 0;
}
.faqs summary { font-weight: 700; cursor: pointer; }
.faqs p { margin: 10px 0 0; color: #2a313b; }

/* Footer */
.site-footer { border-top: 1px solid var(--border); margin-top: 40px; padding: 28px 0; }
.site-footer p { margin: 6px 0; font-size: 0.92rem; }
.muted { color: var(--muted); }
.site-footer a { color: var(--brand); text-decoration: none; }

@media (max-width: 560px) {
  .hero h1 { font-size: 1.9rem; }
  .guide h1 { font-size: 1.7rem; }
}