:root {
  --seo-ink: #0b3558;
  --seo-cyan: #087fa4;
  --seo-text: #17212d;
  --seo-muted: #455867;
  --seo-line: rgba(11, 53, 88, 0.14);
  --seo-soft: #eef8fb;
  --seo-white: #ffffff;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: #f7fafc;
  color: var(--seo-text);
  font-family:
    'Segoe UI',
    system-ui,
    -apple-system,
    sans-serif;
}

.seo-fallback,
.seo-page {
  min-height: 100vh;
  background:
    radial-gradient(circle at 92% 1%, rgba(10, 164, 200, 0.13), transparent 24rem),
    linear-gradient(180deg, #f8fbfd 0, #fff 36rem, #f4f8fa 100%);
}

.seo-header,
.seo-footer,
.seo-page main {
  width: min(1120px, calc(100% - 2rem));
  margin-right: auto;
  margin-left: auto;
}

.seo-header {
  min-height: 74px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  border-bottom: 1px solid var(--seo-line);
}

.seo-header nav,
.seo-footer,
.seo-actions,
.seo-breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem 1.25rem;
}

.seo-header a,
.seo-footer a,
.seo-breadcrumbs a,
.seo-grid a,
.seo-related a {
  color: var(--seo-cyan);
  font-weight: 700;
  text-underline-offset: 3px;
}

.seo-brand {
  color: var(--seo-ink) !important;
  font-size: 1.2rem;
  font-weight: 900 !important;
  letter-spacing: -0.03em;
  text-decoration: none;
}

.seo-brand span {
  color: var(--seo-cyan);
}

.seo-hero,
.seo-page-hero {
  padding: clamp(4rem, 10vw, 8rem) 0;
}

.seo-page-hero {
  max-width: 900px;
  padding-bottom: clamp(3rem, 7vw, 5rem);
}

.seo-eyebrow {
  margin: 0 0 0.85rem;
  color: var(--seo-cyan);
  font-size: 0.78rem;
  font-weight: 850;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.seo-hero h1,
.seo-page-hero h1 {
  max-width: 960px;
  margin: 0;
  color: var(--seo-ink);
  font-size: clamp(2.65rem, 7vw, 5.8rem);
  line-height: 0.99;
  letter-spacing: -0.05em;
}

.seo-page-hero h1 {
  font-size: clamp(2.5rem, 6vw, 4.8rem);
}

.seo-lead {
  max-width: 820px;
  margin: 1.5rem 0 0;
  color: var(--seo-muted);
  font-size: clamp(1.05rem, 2vw, 1.3rem);
  line-height: 1.68;
}

.seo-actions {
  margin-top: 2rem;
}

.seo-button {
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  justify-content: center;
  padding: 0.72rem 1.2rem;
  border: 1px solid var(--seo-line);
  border-radius: 9px;
  background: #fff;
  color: var(--seo-ink);
  font-weight: 800;
  text-decoration: none;
}

.seo-button-primary {
  border-color: var(--seo-ink);
  background: var(--seo-ink);
  color: #fff;
}

.seo-section {
  padding: clamp(3.5rem, 8vw, 6rem) 0;
}

.seo-section h2 {
  max-width: 860px;
  margin: 0;
  color: var(--seo-ink);
  font-size: clamp(2rem, 4.5vw, 4rem);
  line-height: 1.06;
  letter-spacing: -0.04em;
}

.seo-section h3 {
  color: var(--seo-ink);
  font-size: 1.25rem;
}

.seo-section p,
.seo-section li,
.seo-copy p,
.seo-copy li {
  color: var(--seo-muted);
  font-size: 1rem;
  line-height: 1.75;
}

.seo-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 2.5rem;
}

.seo-grid article,
.seo-related,
.seo-card {
  padding: 1.5rem;
  border: 1px solid var(--seo-line);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.92);
}

.seo-grid h3 {
  margin: 0 0 0.7rem;
}

.seo-grid p {
  margin: 0;
}

.seo-panel {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: start;
  gap: 3rem;
  padding-right: clamp(1.5rem, 5vw, 4rem);
  padding-left: clamp(1.5rem, 5vw, 4rem);
  border-radius: 30px;
  background: var(--seo-ink);
}

.seo-panel h2,
.seo-panel p,
.seo-panel .seo-eyebrow {
  color: #fff;
}

.seo-checks {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.8rem 2rem;
  max-width: 900px;
  padding-left: 1.2rem;
}

.seo-breadcrumbs {
  padding-top: 1.5rem;
  color: var(--seo-muted);
  font-size: 0.84rem;
}

.seo-copy {
  max-width: 850px;
  padding-bottom: 5rem;
}

.seo-copy h2 {
  margin: 3.5rem 0 1rem;
  color: var(--seo-ink);
  font-size: clamp(1.8rem, 4vw, 3rem);
  line-height: 1.1;
  letter-spacing: -0.035em;
}

.seo-copy h3 {
  margin: 2.4rem 0 0.65rem;
  color: var(--seo-ink);
  font-size: 1.3rem;
}

.seo-copy p,
.seo-copy ul,
.seo-copy ol {
  margin-top: 0.8rem;
  margin-bottom: 0.8rem;
}

.seo-related {
  margin-top: 3.5rem;
  background: var(--seo-soft);
}

.seo-related h2 {
  margin-top: 0;
  font-size: 1.5rem;
}

.seo-related ul {
  display: grid;
  gap: 0.5rem;
  margin: 0;
  padding-left: 1.1rem;
}

.seo-footer {
  padding: 1.5rem 0 2.5rem;
  border-top: 1px solid var(--seo-line);
  color: var(--seo-muted);
  font-size: 0.82rem;
}

@media (max-width: 800px) {
  .seo-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (max-width: 560px) {
  .seo-header nav {
    display: none;
  }

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

  .seo-actions,
  .seo-actions .seo-button {
    width: 100%;
  }
}