:root {
  --seo-bg-base: #0b1020;
  --seo-bg-panel: rgba(14, 22, 42, 0.92);
  --seo-border: rgba(56, 189, 248, 0.14);
  --seo-text-main: #e2e8f0;
  --seo-text-muted: #94a3b8;
  --seo-accent: #22d3ee;
  --seo-accent-active: #14b8a6;
  --seo-shadow: 0 20px 44px rgba(2, 6, 23, 0.34);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  font-family: "Avenir Next", "SF Pro Display", "Noto Sans", "Segoe UI", sans-serif;
  color: var(--seo-text-main);
  background:
    radial-gradient(circle at 12% 10%, rgba(34, 211, 238, 0.18) 0%, transparent 38%),
    radial-gradient(circle at 88% 0%, rgba(20, 184, 166, 0.14) 0%, transparent 40%),
    radial-gradient(circle at 50% 100%, rgba(14, 165, 233, 0.08) 0%, transparent 48%),
    var(--seo-bg-base);
}

body {
  min-height: 100dvh;
}

a {
  color: inherit;
}

.seo-page {
  width: min(100%, 560px);
  margin: 0 auto;
  padding: 16px 18px 56px;
  display: grid;
  gap: 24px;
}

.hero {
  min-height: calc(100dvh - 32px);
  display: grid;
  align-content: center;
  justify-items: center;
  gap: 30px;
  text-align: center;
  padding: clamp(42px, 8vh, 76px) clamp(22px, 6vw, 34px);
  border-radius: 30px;
  border: 1px solid rgba(56, 189, 248, 0.12);
  background:
    radial-gradient(circle at 50% 0%, rgba(34, 211, 238, 0.08) 0%, transparent 46%),
    linear-gradient(165deg, rgba(18, 30, 56, 0.82) 0%, rgba(14, 22, 42, 0.96) 100%);
  box-shadow: 0 18px 38px rgba(2, 6, 23, 0.34);
}

h1 {
  margin: 0;
  max-width: 13ch;
  color: #f8fafc;
  font-size: clamp(1.92rem, 7.2vw, 2.76rem);
  line-height: 1.05;
  letter-spacing: -0.026em;
  font-weight: 700;
  text-wrap: balance;
}

.empathy {
  margin: 0;
  max-width: 26ch;
  color: rgba(226, 232, 240, 0.86);
  font-size: clamp(1rem, 3.8vw, 1.08rem);
  line-height: 1.72;
  text-wrap: pretty;
}

.cta {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: min(100%, 24rem);
  min-height: 60px;
  padding: 0 24px;
  border-radius: 18px;
  border: 1px solid rgba(4, 36, 48, 0.08);
  background: linear-gradient(145deg, var(--seo-accent) 0%, #2dd4bf 100%);
  box-shadow:
    0 14px 30px rgba(8, 47, 73, 0.3),
    inset 0 1px 0 rgba(240, 253, 250, 0.55);
  color: #042430;
  font-size: 1.05rem;
  font-weight: 800;
  line-height: 1.2;
  text-decoration: none;
  text-align: center;
  transition:
    transform 140ms ease,
    box-shadow 160ms ease,
    filter 140ms ease,
    background 140ms ease,
    letter-spacing 140ms ease;
  margin-top: 8px;
}

.cta:hover,
.cta:focus-visible {
  transform: translateY(-1px);
  letter-spacing: 0.01em;
  box-shadow:
    0 16px 34px rgba(8, 47, 73, 0.34),
    inset 0 1px 0 rgba(240, 253, 250, 0.62);
}

.cta:active {
  transform: translateY(1px);
  background: linear-gradient(145deg, var(--seo-accent-active) 0%, #14b8a6 100%);
}

.after-hero {
  display: grid;
  gap: 18px;
  padding: 4px 18px 0;
  color: var(--seo-text-muted);
}

.sub,
.seo,
.links {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.72;
}

.sub {
  color: #cbd5e1;
}

.seo {
  color: var(--seo-text-muted);
}

.links {
  display: grid;
  gap: 10px;
}

.links-label {
  margin: 0;
  font-size: 0.74rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: rgba(148, 163, 184, 0.86);
}

.links ul {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
}

.links a {
  color: rgba(191, 219, 254, 0.9);
  font-size: 0.88rem;
  text-decoration: underline;
  text-decoration-color: rgba(56, 189, 248, 0.22);
  text-underline-offset: 3px;
}

.links a:hover,
.links a:focus-visible {
  color: #e0f2fe;
  text-decoration-color: rgba(56, 189, 248, 0.4);
}

@media (max-width: 480px) {
  .hero {
    min-height: calc(100dvh - 32px);
    gap: 24px;
    padding: 38px 18px;
    border-radius: 26px;
  }

  .seo-page {
    padding-inline: 16px;
    gap: 20px;
  }

  .after-hero {
    padding-inline: 4px;
  }

  .cta {
    width: min(100%, 84vw);
    min-height: 58px;
    font-size: 1rem;
    padding: 0 22px;
  }
}