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

:root {
  --tether: #26A17B;
  --tether-dark: #1e8c6a;
  --bg: #F5F5F5;
  --white: #ffffff;
  --text: #1a1a2e;
  --text-muted: #6b6b7d;
  --radius: 14px;
  --shadow: 0 8px 32px rgba(0, 30, 60, 0.1);
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--tether-dark); }
a:hover { color: var(--tether); }

.seo-page-top {
  background: linear-gradient(135deg, var(--tether) 0%, var(--tether-dark) 100%);
  padding: 14px 16px;
  text-align: center;
}

.seo-page-top a {
  color: var(--white);
  text-decoration: none;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.seo-page-top a:hover { opacity: 0.9; }

.seo-article-wrap {
  max-width: 680px;
  margin: 0 auto;
  padding: 28px 16px 48px;
}

.seo-article-wrap h1 {
  font-size: clamp(1.35rem, 4.5vw, 1.85rem);
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 12px;
}

.seo-article-wrap .lead {
  font-size: 1rem;
  color: var(--text-muted);
  margin-bottom: 28px;
}

.seo-article-wrap h2 {
  font-size: clamp(1.05rem, 3.2vw, 1.25rem);
  font-weight: 700;
  margin: 28px 0 10px;
  color: var(--text);
}

.seo-article-wrap h3 {
  font-size: 1rem;
  font-weight: 600;
  margin: 18px 0 8px;
}

.seo-article-wrap p,
.seo-article-wrap li {
  font-size: 0.92rem;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.seo-article-wrap ul,
.seo-article-wrap ol {
  padding-left: 1.25rem;
  margin-bottom: 16px;
}

.seo-article-wrap li { margin-bottom: 6px; }

.seo-cta {
  display: block;
  margin: 32px 0 24px;
  padding: 16px 20px;
  background: var(--white);
  border: 1px solid rgba(38, 161, 123, 0.15);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  text-align: center;
  text-decoration: none;
}

.seo-cta strong {
  display: block;
  color: var(--text);
  font-size: 1rem;
  margin-bottom: 6px;
}

.seo-cta span {
  color: var(--text-muted);
  font-size: 0.86rem;
}

.seo-nav-links {
  margin-top: 32px;
  padding-top: 20px;
  border-top: 1px solid rgba(0, 0, 0, 0.08);
  font-size: 0.84rem;
}

.seo-nav-links p { margin-bottom: 8px; color: var(--text-muted); }

.seo-faq-item { margin-bottom: 20px; }

.seo-faq-item h2 {
  margin-top: 0;
  font-size: 1rem;
}

.seo-breadcrumb {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.seo-breadcrumb a { text-decoration: none; }