:root {
  color-scheme: light;
  --text: #1d1d1f;
  --muted: #6e6e73;
  --line: rgba(210, 210, 215, 0.8);
  --accent: #0071e3;
  --surface: rgba(255, 255, 255, 0.78);
  --soft: #f5f5f7;
  --shadow: 0 30px 90px rgba(0, 0, 0, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  min-height: 100vh;
  margin: 0;
  background:
    radial-gradient(circle at 72% 8%, rgba(0, 113, 227, 0.12), transparent 28%),
    linear-gradient(180deg, #fbfbfd 0%, #f5f5f7 100%);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Helvetica Neue", Arial, sans-serif;
  letter-spacing: 0;
}

a {
  color: inherit;
}

.seo-shell {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
}

.seo-header,
.seo-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 28px 0;
}

.seo-brand,
.seo-nav {
  display: flex;
  align-items: center;
  gap: 12px;
}

.seo-brand {
  text-decoration: none;
  font-weight: 820;
}

.seo-brand img {
  width: 28px;
  height: 28px;
}

.seo-nav {
  flex-wrap: wrap;
  justify-content: flex-end;
  color: var(--muted);
  font-size: 14px;
  font-weight: 720;
}

.seo-nav a,
.seo-footer a {
  text-decoration: none;
}

.seo-nav a:hover,
.seo-footer a:hover {
  color: var(--text);
}

.seo-hero {
  display: grid;
  gap: 28px;
  padding: 76px 0 52px;
  text-align: center;
}

.eyebrow {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  font-weight: 820;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin: 0;
}

h1 {
  max-width: 850px;
  margin: 0 auto;
  font-size: clamp(42px, 7vw, 82px);
  line-height: 1.03;
  letter-spacing: 0;
}

.seo-hero p:not(.eyebrow) {
  max-width: 680px;
  margin: 0 auto;
  color: var(--muted);
  font-size: clamp(18px, 2vw, 23px);
  line-height: 1.55;
}

.seo-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
}

.button,
.button-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 20px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 780;
  text-decoration: none;
}

.button {
  background: #1d1d1f;
  color: #fff;
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.16);
}

.button-secondary {
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.72);
  color: var(--text);
}

.seo-panel {
  margin: 18px 0 34px;
  padding: clamp(24px, 5vw, 52px);
  border: 1px solid var(--line);
  border-radius: 34px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.seo-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 28px;
}

.seo-card {
  min-height: 188px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.72);
}

.seo-card span {
  color: var(--accent);
  font-size: 13px;
  font-weight: 820;
}

.seo-card h2,
.seo-card h3 {
  margin-top: 12px;
  font-size: 22px;
  line-height: 1.2;
}

.seo-card p,
.seo-panel > p,
.seo-list li,
.price-card p {
  margin-top: 12px;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.65;
}

.seo-panel h2 {
  font-size: clamp(28px, 4vw, 48px);
  line-height: 1.1;
}

.seo-list {
  display: grid;
  gap: 14px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.seo-list li {
  margin: 0;
  padding: 16px 0;
  border-top: 1px solid var(--line);
}

.price-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin-top: 28px;
}

.price-card {
  min-height: 190px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.72);
}

.price-card strong {
  display: block;
  margin-top: 16px;
  font-size: 34px;
  line-height: 1;
}

.seo-footer {
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
}

@media (max-width: 860px) {
  .seo-header,
  .seo-footer {
    align-items: flex-start;
    flex-direction: column;
  }

  .seo-nav {
    justify-content: flex-start;
  }

  .seo-grid,
  .price-grid {
    grid-template-columns: 1fr;
  }

  .seo-hero {
    padding-top: 46px;
  }
}