@import url("https://fonts.googleapis.com/css2?family=Sora:wght@400;600;700&family=Work+Sans:wght@400;500;600&display=swap");

:root {
  --seo-bg: #f5f7fb;
  --seo-surface: #ffffff;
  --seo-surface-alt: #eef6ff;
  --seo-border: #d9e3f0;
  --seo-text: #17324d;
  --seo-muted: #5b7289;
  --seo-accent: #0077b6;
  --seo-accent-dark: #025f8f;
  --seo-accent-soft: #dff3ff;
  --seo-shadow: 0 16px 40px rgba(23, 50, 77, 0.08);
  --seo-radius: 18px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  min-height: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at top left, rgba(0, 119, 182, 0.1), transparent 28%),
    linear-gradient(180deg, #f9fbfe 0%, var(--seo-bg) 100%);
  color: var(--seo-text);
  font-family: "Work Sans", system-ui, sans-serif;
  line-height: 1.7;
}

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

.seo-shell {
  width: min(1100px, calc(100% - 32px));
  margin: 0 auto;
}

.seo-header {
  padding: 24px 0 12px;
}

.seo-topbar {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
  font-size: 0.92rem;
  color: var(--seo-muted);
}

.seo-brand,
.seo-breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}

.seo-brand a,
.seo-breadcrumbs a {
  text-decoration: none;
  color: var(--seo-text);
}

.seo-hero {
  margin: 20px 0 28px;
  padding: 36px;
  border: 1px solid var(--seo-border);
  border-radius: calc(var(--seo-radius) + 6px);
  background:
    linear-gradient(135deg, rgba(223, 243, 255, 0.95), rgba(255, 255, 255, 0.98)),
    var(--seo-surface);
  box-shadow: var(--seo-shadow);
}

.seo-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border-radius: 999px;
  background: var(--seo-accent-soft);
  color: var(--seo-accent-dark);
  font-family: "Sora", system-ui, sans-serif;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.seo-hero h1 {
  margin: 16px 0 12px;
  font-family: "Sora", system-ui, sans-serif;
  font-size: clamp(2rem, 5vw, 3.35rem);
  line-height: 1.1;
}

.seo-hero p {
  max-width: 760px;
  margin: 0 0 14px;
  color: var(--seo-muted);
  font-size: 1.05rem;
}

.seo-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

.seo-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 18px;
  border-radius: 12px;
  border: 1px solid transparent;
  font-weight: 600;
  text-decoration: none;
}

.seo-btn-primary {
  background: var(--seo-accent);
  color: #ffffff;
}

.seo-btn-primary:hover {
  background: var(--seo-accent-dark);
}

.seo-btn-secondary {
  background: rgba(255, 255, 255, 0.82);
  border-color: var(--seo-border);
  color: var(--seo-text);
}

.seo-main {
  padding-bottom: 72px;
}

.seo-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 24px;
  align-items: start;
}

.seo-article,
.seo-panel {
  background: var(--seo-surface);
  border: 1px solid var(--seo-border);
  border-radius: var(--seo-radius);
  box-shadow: var(--seo-shadow);
}

.seo-article {
  padding: 32px;
}

.seo-article h2,
.seo-article h3 {
  font-family: "Sora", system-ui, sans-serif;
  line-height: 1.2;
  color: #10263b;
}

.seo-article h2 {
  margin-top: 34px;
  margin-bottom: 12px;
  font-size: 1.5rem;
}

.seo-article h3 {
  margin-top: 24px;
  margin-bottom: 8px;
  font-size: 1.08rem;
}

.seo-article p,
.seo-article li {
  color: var(--seo-muted);
  font-size: 1rem;
}

.seo-article ul,
.seo-article ol {
  padding-left: 22px;
}

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

.seo-callout {
  margin: 24px 0;
  padding: 18px 18px 18px 20px;
  border-left: 4px solid var(--seo-accent);
  border-radius: 14px;
  background: var(--seo-surface-alt);
}

.seo-checklist {
  display: grid;
  gap: 12px;
  padding: 0;
  list-style: none;
}

.seo-checklist li {
  padding: 14px 16px;
  border: 1px solid var(--seo-border);
  border-radius: 14px;
  background: #fbfdff;
}

.seo-panel {
  position: sticky;
  top: 20px;
  padding: 22px;
}

.seo-panel h2,
.seo-panel h3 {
  margin: 0 0 12px;
  font-family: "Sora", system-ui, sans-serif;
  font-size: 1rem;
}

.seo-panel p,
.seo-panel li {
  margin: 0;
  color: var(--seo-muted);
  font-size: 0.95rem;
}

.seo-panel ul {
  display: grid;
  gap: 10px;
  padding-left: 18px;
  margin: 0;
}

.seo-panel + .seo-panel {
  margin-top: 18px;
}

.seo-mini-grid {
  display: grid;
  gap: 14px;
}

.seo-card-link {
  display: block;
  padding: 16px;
  border-radius: 14px;
  border: 1px solid var(--seo-border);
  background: #fbfdff;
  text-decoration: none;
}

.seo-card-link strong {
  display: block;
  margin-bottom: 6px;
  color: var(--seo-text);
}

.seo-card-link span {
  color: var(--seo-muted);
  font-size: 0.92rem;
}

.seo-footer {
  padding: 24px 0 56px;
  color: var(--seo-muted);
  font-size: 0.9rem;
}

@media (max-width: 920px) {
  .seo-grid {
    grid-template-columns: 1fr;
  }

  .seo-panel {
    position: static;
  }
}

@media (max-width: 640px) {
  .seo-hero,
  .seo-article,
  .seo-panel {
    padding: 22px;
  }

  .seo-topbar {
    flex-direction: column;
    align-items: flex-start;
  }
}