:root {
  --seo-ink: #172033;
  --seo-muted: #586579;
  --seo-bg: #f4f7f9;
  --seo-card: #ffffff;
  --seo-line: #dce5e8;
  --seo-accent: #0d9488;
  --seo-accent-dark: #0f766e;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--seo-ink); background: var(--seo-bg); font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; line-height: 1.65; }
a { color: inherit; }
img { display: block; max-width: 100%; }
.seo-wrap { width: min(1120px, calc(100% - 40px)); margin: 0 auto; }
.seo-header { position: sticky; top: 0; z-index: 10; background: rgba(255,255,255,.96); border-bottom: 1px solid var(--seo-line); backdrop-filter: blur(12px); }
.seo-header-inner { min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.seo-logo { font-size: 22px; font-weight: 850; text-decoration: none; letter-spacing: -.04em; }
.seo-logo span { color: var(--seo-accent); }
.seo-nav { display: flex; flex-wrap: wrap; align-items: center; justify-content: flex-end; gap: 18px; }
.seo-nav a { color: #465569; font-size: 14px; font-weight: 650; text-decoration: none; }
.seo-nav a:hover { color: var(--seo-accent-dark); }
.seo-hero { padding: 92px 0 76px; background: radial-gradient(circle at 80% 10%, rgba(13,148,136,.18), transparent 34%), linear-gradient(145deg, #f7fbfb, #e9f2f3); border-bottom: 1px solid var(--seo-line); }
.seo-kicker { display: inline-block; margin-bottom: 16px; color: var(--seo-accent-dark); font-size: 13px; font-weight: 800; letter-spacing: .11em; text-transform: uppercase; }
.seo-hero h1 { max-width: 820px; margin: 0; font-size: clamp(38px, 6vw, 66px); line-height: 1.04; letter-spacing: -.05em; }
.seo-lead { max-width: 760px; margin: 24px 0 0; color: var(--seo-muted); font-size: clamp(18px, 2.3vw, 22px); }
.seo-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }
.seo-button { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 0 24px; border-radius: 999px; background: var(--seo-accent); color: #fff; font-weight: 750; text-decoration: none; }
.seo-button:hover { background: var(--seo-accent-dark); }
.seo-button--secondary { background: #fff; color: var(--seo-ink); border: 1px solid var(--seo-line); }
.seo-section { padding: 72px 0; }
.seo-section--white { background: #fff; }
.seo-section h2 { max-width: 760px; margin: 0 0 18px; font-size: clamp(28px, 4vw, 42px); line-height: 1.15; letter-spacing: -.035em; }
.seo-intro { max-width: 780px; margin: 0 0 32px; color: var(--seo-muted); font-size: 18px; }
.seo-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.seo-grid--two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.seo-card { padding: 26px; border: 1px solid var(--seo-line); border-radius: 20px; background: var(--seo-card); box-shadow: 0 8px 30px rgba(32,61,70,.05); }
.seo-card img { width: 100%; aspect-ratio: 4 / 3; margin-bottom: 20px; border-radius: 14px; object-fit: contain; background: #f7f8fa; }
.seo-card h2, .seo-card h3 { margin: 0 0 10px; font-size: 21px; line-height: 1.25; letter-spacing: -.02em; }
.seo-card p { margin: 0; color: var(--seo-muted); }
.seo-card a { color: var(--seo-accent-dark); font-weight: 750; }
.seo-list { max-width: 820px; padding-left: 22px; }
.seo-list li { margin: 10px 0; color: var(--seo-muted); }
.seo-table { width: 100%; border-collapse: collapse; background: #fff; border: 1px solid var(--seo-line); }
.seo-table th, .seo-table td { padding: 15px 18px; border-bottom: 1px solid var(--seo-line); text-align: left; vertical-align: top; }
.seo-table th { width: 34%; color: #334155; }
.seo-note { margin-top: 26px; padding: 18px 20px; border-left: 4px solid var(--seo-accent); background: #eaf7f5; color: #36515a; }
.seo-cta { padding: 56px 0; background: #16343a; color: #fff; }
.seo-cta-inner { display: flex; align-items: center; justify-content: space-between; gap: 32px; }
.seo-cta h2 { margin: 0 0 8px; font-size: clamp(28px, 4vw, 40px); }
.seo-cta p { margin: 0; color: #c8d8dc; }
.seo-footer { padding: 40px 0; background: #0e2328; color: #c6d1d4; }
.seo-footer-inner { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 20px; }
.seo-footer a { color: #e5f7f4; }
.seo-breadcrumb { padding: 18px 0; color: #667489; font-size: 14px; }
.seo-meta { margin: 16px 0 0; color: #667489; font-size: 14px; }
.seo-answer { max-width: 860px; margin-top: 30px; padding: 24px 26px; border: 1px solid #b9ded9; border-radius: 18px; background: #fff; box-shadow: 0 10px 30px rgba(32,61,70,.06); }
.seo-answer strong { display: block; margin-bottom: 6px; color: var(--seo-accent-dark); font-size: 13px; letter-spacing: .08em; text-transform: uppercase; }
.seo-answer p { margin: 0; color: #334155; font-size: 17px; }
.seo-faq { max-width: 860px; }
.seo-faq details { padding: 20px 0; border-bottom: 1px solid var(--seo-line); }
.seo-faq summary { cursor: pointer; font-weight: 800; font-size: 18px; }
.seo-faq p { margin: 12px 0 0; color: var(--seo-muted); }
.seo-article { max-width: 820px; }
.seo-article h2 { margin-top: 48px; }
.seo-article h3 { margin: 30px 0 8px; font-size: 22px; }
.seo-article p { color: var(--seo-muted); }
.seo-status { display: inline-block; margin-bottom: 8px; color: var(--seo-accent-dark); font-size: 12px; font-weight: 800; text-transform: uppercase; letter-spacing: .08em; }

@media (max-width: 760px) {
  .seo-header { position: static; }
  .seo-header-inner, .seo-cta-inner { align-items: flex-start; flex-direction: column; padding: 16px 0; }
  .seo-nav { justify-content: flex-start; gap: 12px 16px; }
  .seo-hero { padding: 62px 0 56px; }
  .seo-section { padding: 54px 0; }
  .seo-grid, .seo-grid--two { grid-template-columns: 1fr; }
  .seo-table, .seo-table tbody, .seo-table tr, .seo-table th, .seo-table td { display: block; width: 100%; }
  .seo-table th { padding-bottom: 4px; border-bottom: 0; }
  .seo-table td { padding-top: 4px; }
}