:root {
  --seo-bg: hsl(48 33% 98%);
  --seo-panel: hsl(0 0% 100%);
  --seo-panel-muted: hsl(110 35% 96%);
  --seo-text: hsl(145 28% 17%);
  --seo-muted: hsl(145 12% 38%);
  --seo-border: hsl(120 20% 86%);
  --seo-accent: hsl(140 57% 34%);
  --seo-accent-foreground: hsl(48 33% 98%);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--seo-text);
  background:
    radial-gradient(circle at top, hsl(110 45% 92%), transparent 40%),
    var(--seo-bg);
  font-family: Georgia, "Times New Roman", serif;
  line-height: 1.65;
}

a {
  color: var(--seo-accent);
}

img {
  display: block;
  max-width: 100%;
}

.seo-shell {
  min-height: 100vh;
}

.seo-wrap {
  width: min(1120px, calc(100% - 2rem));
  margin: 0 auto;
}

.seo-header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(12px);
  background: hsl(48 33% 98% / 0.94);
  border-bottom: 1px solid var(--seo-border);
}

.seo-header .seo-wrap,
.seo-footer .seo-wrap {
  display: flex;
  gap: 1rem;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 0;
}

.seo-brand {
  font-size: 1.1rem;
  font-weight: 700;
  text-decoration: none;
  color: var(--seo-text);
}

.seo-nav,
.seo-footer-nav,
.seo-meta,
.seo-related-list,
.seo-link-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
}

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

.seo-hero,
.seo-section,
.seo-article,
.seo-listing,
.seo-legal,
.seo-contact,
.seo-about,
.seo-calculators,
.seo-message {
  padding: 2.5rem 0;
}

.seo-home .seo-hero {
  padding: 5rem 0 3rem;
}

.seo-kicker {
  margin: 0 0 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.8rem;
  color: var(--seo-muted);
}

h1,
h2,
h3 {
  line-height: 1.15;
  margin: 0 0 1rem;
}

h1 {
  font-size: clamp(2.25rem, 4vw, 4.5rem);
}

h2 {
  font-size: clamp(1.5rem, 2vw, 2.4rem);
}

h3 {
  font-size: 1.15rem;
}

.seo-lead,
.seo-intro {
  font-size: 1.125rem;
  color: var(--seo-muted);
  max-width: 70ch;
}

.seo-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.seo-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0.85rem 1.2rem;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 700;
  color: var(--seo-accent-foreground);
  background: var(--seo-accent);
}

.seo-button-secondary {
  background: var(--seo-panel);
  color: var(--seo-text);
  border: 1px solid var(--seo-border);
}

.seo-grid {
  display: grid;
  gap: 1rem;
}

.seo-grid-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.seo-card,
.seo-panel,
.seo-post-card,
.seo-related-item,
.seo-detail {
  background: var(--seo-panel);
  border: 1px solid var(--seo-border);
  border-radius: 1.25rem;
  padding: 1.25rem;
  box-shadow: 0 12px 30px -24px hsl(145 25% 15% / 0.25);
}

.seo-section-muted {
  background: hsl(110 28% 95% / 0.7);
}

.seo-link-grid {
  margin-top: 1rem;
}

.seo-link-grid a {
  background: var(--seo-panel);
  border: 1px solid var(--seo-border);
  border-radius: 999px;
  padding: 0.75rem 1rem;
  text-decoration: none;
}

.seo-article-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(280px, 0.85fr);
  gap: 2rem;
  align-items: start;
}

.seo-figure {
  overflow: hidden;
  border-radius: 1.5rem;
  border: 1px solid var(--seo-border);
  background: var(--seo-panel);
}

.seo-figure img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.seo-meta {
  color: var(--seo-muted);
  font-size: 0.95rem;
  margin-bottom: 1rem;
}

.seo-content {
  margin-top: 2rem;
  padding: 1.5rem;
  border-radius: 1.5rem;
  border: 1px solid var(--seo-border);
  background: var(--seo-panel);
}

.seo-content h2,
.seo-content h3 {
  margin-top: 2rem;
}

.seo-content p,
.seo-content li,
.seo-content blockquote {
  max-width: 78ch;
}

.seo-content blockquote {
  margin: 1.5rem 0;
  padding-left: 1rem;
  border-left: 4px solid var(--seo-border);
  color: var(--seo-muted);
}

.seo-related-list {
  list-style: none;
  padding: 0;
  margin: 1rem 0 0;
}

.seo-related-item {
  text-decoration: none;
  color: var(--seo-text);
}

.seo-post-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 1.5rem;
}

.seo-post-card {
  text-decoration: none;
  color: inherit;
}

.seo-post-card p,
.seo-fine {
  color: var(--seo-muted);
}

.seo-legal .seo-panel,
.seo-about .seo-panel,
.seo-contact .seo-panel,
.seo-calculators .seo-panel {
  margin-top: 1rem;
}

.seo-footer {
  border-top: 1px solid var(--seo-border);
  margin-top: 2rem;
  background: hsl(48 33% 98% / 0.92);
}

@media (max-width: 900px) {
  .seo-grid-3,
  .seo-post-grid,
  .seo-article-hero {
    grid-template-columns: 1fr;
  }

  .seo-header .seo-wrap,
  .seo-footer .seo-wrap {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 640px) {
  .seo-home .seo-hero,
  .seo-article,
  .seo-listing,
  .seo-contact,
  .seo-about,
  .seo-legal,
  .seo-calculators,
  .seo-message {
    padding: 1.5rem 0;
  }

  .seo-content,
  .seo-card,
  .seo-panel,
  .seo-post-card,
  .seo-related-item,
  .seo-detail {
    padding: 1rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}