:root {
  color-scheme: light dark;
  --text: #e8eaef;
  --muted: #9aa3b2;
  --bg: #05070d;
  --surface: #0c1018;
  --border: rgba(255, 255, 255, 0.1);
  --link: #87cefa;
  --brand: #f2760a;
  font-family: system-ui, -apple-system, "Segoe UI", Inter, sans-serif;
}
@media (prefers-color-scheme: light) {
  :root {
    --text: #14161f;
    --muted: #4a5568;
    --bg: #f6f7fb;
    --surface: #fff;
    --border: rgba(20, 22, 31, 0.12);
    --link: #2563eb;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  font-size: 16px;
}
a { color: var(--link); }
.seo-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 22px;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}
.seo-header .brand { font-weight: 700; text-decoration: none; color: var(--text); }
.seo-header .tagline { color: var(--muted); font-size: 14px; margin-left: 8px; font-weight: 500; }
.seo-nav { display: flex; flex-wrap: wrap; gap: 14px; font-size: 14px; }
.seo-nav a { text-decoration: none; font-weight: 500; }
.seo-wrap { max-width: 720px; margin: 0 auto; padding: 28px 22px 56px; }
.seo-wrap h1 { font-size: clamp(1.6rem, 4vw, 2.1rem); line-height: 1.2; margin: 0 0 12px; }
.seo-wrap h2 { font-size: 1.2rem; margin: 28px 0 10px; }
.seo-wrap h3 { font-size: 1.05rem; margin: 20px 0 8px; }
.seo-wrap p, .seo-wrap li { color: var(--muted); }
.seo-wrap p.lede { font-size: 1.05rem; color: var(--text); }
.seo-breadcrumb { font-size: 13px; color: var(--muted); margin-bottom: 18px; }
.seo-breadcrumb a { color: var(--muted); }
.seo-card-list { list-style: none; padding: 0; margin: 20px 0; }
.seo-card-list li {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px 16px;
  margin-bottom: 10px;
  background: var(--surface);
}
.seo-card-list a { font-weight: 600; text-decoration: none; color: var(--text); }
.seo-card-list p { margin: 6px 0 0; font-size: 14px; }
.seo-cta {
  display: inline-block;
  margin-top: 24px;
  padding: 12px 18px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--brand), #4f8dff);
  color: #fff !important;
  text-decoration: none;
  font-weight: 600;
  font-size: 15px;
}
.seo-footer {
  border-top: 1px solid var(--border);
  padding: 24px 22px 40px;
  font-size: 13px;
  color: var(--muted);
  max-width: 720px;
  margin: 0 auto;
}
.seo-faq details { border: 1px solid var(--border); border-radius: 10px; padding: 12px 14px; margin-bottom: 8px; background: var(--surface); }
.seo-faq summary { cursor: pointer; font-weight: 600; color: var(--text); }