:root {
  --seo-primary: #477ff0;
  --seo-secondary: #8d4bf2;
  --seo-canvas: #f8fafc;
  --seo-paper: #ffffff;
  --seo-ink: #1e293b;
  --seo-ink-soft: #64748b;
  --seo-hairline: rgba(0, 0, 0, 0.08);
  --seo-radius: 16px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--seo-canvas);
  color: var(--seo-ink);
  font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }

.seo-wrap { width: min(1080px, calc(100% - 48px)); margin: 0 auto; }

.seo-header {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid var(--seo-hairline);
  background: color-mix(in srgb, var(--seo-canvas) 88%, transparent);
  backdrop-filter: saturate(180%) blur(10px);
}

.seo-nav,
.seo-footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 64px;
  gap: 20px;
}

.seo-brand,
.seo-nav-actions,
.seo-footer nav {
  display: flex;
  align-items: center;
  gap: 16px;
}

.seo-brand { font-size: 1.15rem; font-weight: 800; text-decoration: none; }
.seo-brand img { display: block; }
.seo-nav-link,
.seo-footer a { color: var(--seo-ink-soft); font-size: .95rem; font-weight: 600; text-decoration: none; }
.seo-nav-link:hover,
.seo-footer a:hover { color: var(--seo-ink); }

.seo-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  padding: 10px 18px;
  font-weight: 700;
  text-decoration: none;
}

.seo-button-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--seo-primary), var(--seo-secondary));
}

.seo-hero { padding: 96px 0 84px; text-align: center; }
.seo-eyebrow { margin: 0 0 12px; color: var(--seo-primary); font-size: .78rem; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
.seo-hero h1 { max-width: 780px; margin: 0 auto 20px; font-size: clamp(2.45rem, 6vw, 4.5rem); line-height: 1.05; letter-spacing: -.045em; }
.seo-hero-intro { max-width: 680px; margin: 0 auto 28px; color: var(--seo-ink-soft); font-size: 1.15rem; }
.seo-free-note { margin: 14px 0 0; color: var(--seo-ink-soft); font-size: .86rem; }
.seo-section { padding: 72px 0; }
.seo-section-heading { max-width: 640px; margin-bottom: 28px; }
.seo-section-heading h2, .seo-comparison-copy h2, .seo-comparison-card h2, .seo-final-cta h2 { margin: 0; font-size: clamp(1.85rem, 4vw, 2.7rem); line-height: 1.12; letter-spacing: -.035em; }
.seo-feature-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.seo-card { padding: 26px; border: 1px solid var(--seo-hairline); border-radius: var(--seo-radius); background: var(--seo-paper); box-shadow: 0 8px 24px -18px rgba(0, 0, 0, .35); }
.seo-card-number { color: var(--seo-primary); font-size: .78rem; font-weight: 800; }
.seo-card h3 { margin: 22px 0 8px; font-size: 1.12rem; }
.seo-card p, .seo-comparison-copy p, .seo-comparison-card p, .seo-final-cta p { margin: 0; color: var(--seo-ink-soft); }
.seo-workflow { padding: 72px 0; color: #fff; background: linear-gradient(135deg, #162b50, #312052); }
.seo-workflow .seo-eyebrow { color: #a8c1ff; }
.seo-workflow-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; }
.seo-workflow-step { min-height: 132px; padding: 18px; border: 1px solid rgba(255,255,255,.16); border-radius: 14px; background: rgba(255,255,255,.07); }
.seo-workflow-step span { display: block; margin-bottom: 28px; color: #a8c1ff; font-size: .8rem; font-weight: 800; }
.seo-workflow-step strong { font-size: 1rem; }
.seo-comparison-copy { max-width: 650px; margin-bottom: 28px; }
.seo-comparison-copy p:last-child { margin-top: 16px; font-size: 1.05rem; }
.seo-comparison-card { display: grid; grid-template-columns: 1.15fr .85fr; gap: 36px; padding: 36px; border: 1px solid transparent; border-radius: var(--seo-radius); background: linear-gradient(var(--seo-paper), var(--seo-paper)) padding-box, linear-gradient(135deg, var(--seo-primary), var(--seo-secondary)) border-box; }
.seo-comparison-card ul { display: grid; gap: 12px; align-content: center; margin: 0; padding: 0; list-style: none; }
.seo-comparison-card li { position: relative; padding-left: 28px; font-weight: 700; }
.seo-comparison-card li::before { content: "✓"; position: absolute; left: 0; color: var(--seo-primary); }
.seo-table-wrap { overflow-x: auto; border: 1px solid var(--seo-hairline); border-radius: var(--seo-radius); background: var(--seo-paper); }
.seo-table { width: 100%; border-collapse: collapse; text-align: left; }
.seo-table th, .seo-table td { padding: 16px 18px; border-bottom: 1px solid var(--seo-hairline); }
.seo-table th { color: var(--seo-primary); font-size: .9rem; }
.seo-table td { color: var(--seo-ink-soft); }
.seo-table tr:last-child td { border-bottom: 0; }
.seo-faq-list { display: grid; gap: 10px; }
.seo-faq-list details { padding: 18px 20px; border: 1px solid var(--seo-hairline); border-radius: 12px; background: var(--seo-paper); }
.seo-faq-list summary { cursor: pointer; font-weight: 700; }
.seo-faq-list p { max-width: 760px; margin: 12px 0 0; color: var(--seo-ink-soft); }
.seo-related { padding-top: 12px; padding-bottom: 72px; }
.seo-related > div { display: flex; flex-wrap: wrap; gap: 12px; }
.seo-related a { padding: 10px 14px; border: 1px solid var(--seo-hairline); border-radius: 999px; color: var(--seo-primary); font-weight: 700; text-decoration: none; background: var(--seo-paper); }
.seo-final-cta { padding: 80px 0; text-align: center; background: linear-gradient(135deg, rgba(71,127,240,.12), rgba(141,75,242,.14)); }
.seo-final-cta .seo-eyebrow { margin-bottom: 10px; }
.seo-final-cta p { max-width: 540px; margin: 16px auto 24px; }

.seo-footer { margin-top: 72px; border-top: 1px solid var(--seo-hairline); }
.seo-footer-inner { color: var(--seo-ink-soft); font-size: .85rem; }

@media (max-width: 640px) {
  .seo-wrap { width: min(100% - 32px, 560px); }
  .seo-nav-link { display: none; }
  .seo-footer-inner { align-items: flex-start; flex-direction: column; justify-content: center; padding: 24px 0; }
  .seo-footer nav { flex-wrap: wrap; }
  .seo-hero { padding: 64px 0 56px; }
  .seo-hero-intro { font-size: 1rem; }
  .seo-section { padding: 52px 0; }
  .seo-feature-grid, .seo-workflow-grid, .seo-comparison-card { grid-template-columns: 1fr; }
  .seo-workflow-grid { gap: 10px; }
  .seo-workflow-step { min-height: auto; }
  .seo-workflow-step span { display: inline-block; margin: 0 8px 0 0; }
  .seo-comparison-card { gap: 24px; padding: 24px; }
}

@media (prefers-color-scheme: dark) {
  :root {
    --seo-canvas: #0f141b;
    --seo-paper: #171d26;
    --seo-ink: #e7ecf3;
    --seo-ink-soft: #94a3b8;
    --seo-hairline: rgba(255, 255, 255, 0.09);
  }
}