:root {
  --seo-bg: #f4f6fb;
  --seo-surface: rgba(255, 255, 255, 0.9);
  --seo-text: #18212f;
  --seo-muted: #5d6a7e;
  --seo-border: rgba(24, 33, 47, 0.08);
  --seo-accent: #0d7f6f;
  --seo-accent-deep: #0a5f53;
  --seo-shadow: 0 18px 42px rgba(17, 24, 39, 0.08);
}

* {
  box-sizing: border-box;
}

html {
  font-size: 16px;
}

body {
  margin: 0;
  font-family: "Cairo", ui-sans-serif, system-ui, sans-serif;
  color: var(--seo-text);
  background:
    radial-gradient(circle at top left, rgba(13, 127, 111, 0.12), transparent 32%),
    linear-gradient(180deg, #f8fbff 0%, var(--seo-bg) 100%);
}

a {
  color: inherit;
  text-decoration: none;
}

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

.seo-shell,
.seo-footer {
  padding: 1.25rem 1.5rem;
}

.seo-shell__inner,
.seo-footer__inner,
.seo-main {
  width: min(72rem, calc(100vw - 2rem));
  margin: 0 auto;
}

.seo-shell__inner,
.seo-footer__inner,
.seo-nav,
.meta-row,
.link-row,
.detail__meta,
.tag-row,
.pagination {
  display: flex;
  align-items: center;
}

.seo-shell__inner,
.seo-footer__inner,
.pagination {
  justify-content: space-between;
}

.seo-shell__inner {
  gap: 1rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.9rem;
}

.brand__mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.6rem;
  height: 2.6rem;
  border-radius: 0.9rem;
  background: linear-gradient(135deg, var(--seo-accent), #34c3a5);
  color: #fff;
  font-weight: 800;
}

.brand__copy {
  display: flex;
  flex-direction: column;
}

.brand__title {
  font-size: 1rem;
  font-weight: 800;
}

.brand__subtitle,
.seo-footer__inner,
.meta-row,
.detail__meta,
.summary,
.lede,
.card__body p,
.panel p,
.prose,
.pagination {
  color: var(--seo-muted);
}

.brand__subtitle {
  font-size: 0.82rem;
}

.seo-nav {
  gap: 1rem;
  flex-wrap: wrap;
}

.seo-nav a,
.link-row a,
.pagination a {
  padding: 0.65rem 0.95rem;
  border-radius: 999px;
  border: 1px solid var(--seo-border);
  background: rgba(255, 255, 255, 0.72);
  transition: 150ms ease;
}

.seo-nav a:hover,
.link-row a:hover,
.pagination a:hover {
  border-color: rgba(13, 127, 111, 0.24);
  color: var(--seo-accent-deep);
  transform: translateY(-1px);
}

.seo-main {
  padding: 1.25rem 0 4rem;
}

.hero,
.panel,
.card,
.detail {
  border: 1px solid var(--seo-border);
  background: var(--seo-surface);
  box-shadow: var(--seo-shadow);
  backdrop-filter: blur(12px);
}

.hero,
.detail {
  padding: 2rem;
  border-radius: 2rem;
}

.hero {
  margin-bottom: 1.5rem;
}

.hero--error {
  text-align: center;
}

.eyebrow {
  margin: 0 0 0.75rem;
  color: var(--seo-accent-deep);
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.hero h1,
.detail h1,
.card h2,
.panel h2 {
  margin: 0;
  line-height: 1.1;
}

.hero h1,
.detail h1 {
  font-size: clamp(2rem, 3.5vw, 3.4rem);
}

.lede,
.summary {
  font-size: 1.05rem;
  line-height: 1.8;
  max-width: 52rem;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(17rem, 1fr));
  gap: 1.25rem;
}

.stack {
  display: grid;
  gap: 1rem;
}

.card,
.panel {
  border-radius: 1.6rem;
  overflow: hidden;
}

.card__media {
  display: block;
  aspect-ratio: 16 / 9;
  overflow: hidden;
}

.card__media img,
.hero-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.card__body,
.panel {
  padding: 1.2rem;
}

.meta-row,
.detail__meta,
.tag-row,
.link-row {
  gap: 0.75rem;
  flex-wrap: wrap;
}

.meta-row,
.detail__meta {
  margin: 0.85rem 0 0;
  font-size: 0.9rem;
}

.tag {
  display: inline-flex;
  align-items: center;
  padding: 0.38rem 0.75rem;
  border-radius: 999px;
  background: rgba(13, 127, 111, 0.08);
  color: var(--seo-accent-deep);
  font-size: 0.82rem;
  font-weight: 700;
}

.link-row {
  margin-top: 1.25rem;
}

.hero-image {
  margin: 1.5rem 0;
  max-height: 28rem;
  border-radius: 1.4rem;
}

.prose {
  margin-top: 1.5rem;
  line-height: 1.8;
}

.prose h2,
.prose h3,
.prose h4 {
  margin-top: 1.8rem;
  color: var(--seo-text);
}

.prose p,
.prose ul,
.prose ol,
.prose blockquote,
.prose pre,
.prose table {
  margin: 1rem 0;
}

.prose code,
.prose pre {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

.prose pre {
  overflow-x: auto;
  padding: 1rem;
  border-radius: 1rem;
  background: #172032;
  color: #edf2ff;
}

.prose code {
  padding: 0.15rem 0.35rem;
  border-radius: 0.35rem;
  background: rgba(24, 33, 47, 0.08);
}

.prose table {
  width: 100%;
  border-collapse: collapse;
}

.prose th,
.prose td {
  border: 1px solid var(--seo-border);
  padding: 0.65rem;
  text-align: left;
}

.prose a {
  color: var(--seo-accent-deep);
  text-decoration: underline;
}

.pagination {
  margin-top: 1.5rem;
  gap: 1rem;
}

.seo-footer {
  border-top: 1px solid var(--seo-border);
}

@media (max-width: 720px) {
  .seo-shell,
  .seo-footer {
    padding-left: 1rem;
    padding-right: 1rem;
  }

  .seo-shell__inner,
  .seo-footer__inner,
  .seo-main {
    width: min(72rem, calc(100vw - 1.5rem));
  }

  .seo-shell__inner,
  .seo-footer__inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .hero,
  .detail {
    padding: 1.4rem;
    border-radius: 1.4rem;
  }
}