:root {
  --bg: #050505;
  --surface: rgba(18, 18, 18, 0.82);
  --surface-2: rgba(255, 255, 255, 0.055);
  --border: rgba(255, 255, 255, 0.1);
  --text: #ffffff;
  --muted: #a1a1a1;
  --accent: #25D366;
  --ai-accent: #6d5dfc;
  --font-sans: 'Roboto', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'Roboto Mono', ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 18% 0%, rgba(37, 211, 102, 0.14), transparent 34%),
    radial-gradient(circle at 86% 18%, rgba(109, 93, 252, 0.18), transparent 34%),
    linear-gradient(180deg, #050505 0%, #0a0a0a 100%);
  color: var(--text);
  font-family: var(--font-sans);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px);
  background-size: 42px 42px;
  mask-image: linear-gradient(to bottom, black, transparent 84%);
}

a { color: inherit; }

.seo-shell {
  position: relative;
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
}

.seo-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 18px;
  padding: 22px 0;
}

.seo-brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  font-weight: 900;
  letter-spacing: 0.02em;
}

.seo-logo {
  width: 38px;
  height: 38px;
  object-fit: contain;
  display: block;
}

.seo-nav-links {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  color: var(--muted);
  font-size: 0.92rem;
}

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

.seo-hero {
  padding: clamp(56px, 8vw, 110px) 0 56px;
}

.seo-label {
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

h1 {
  max-width: 900px;
  margin: 18px 0;
  font-size: clamp(2.5rem, 7vw, 5.9rem);
  line-height: 0.95;
  letter-spacing: -0.045em;
}

.seo-intro {
  max-width: 760px;
  color: var(--muted);
  font-size: clamp(1.05rem, 2vw, 1.28rem);
  line-height: 1.7;
}

.seo-cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 30px;
}

.seo-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 20px;
  border-radius: 999px;
  border: 1px solid var(--border);
  text-decoration: none;
  font-weight: 800;
}

.seo-btn.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #06110f;
}

.seo-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(280px, 0.65fr);
  gap: 22px;
  margin: 24px 0 72px;
}

.seo-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 22px;
  padding: clamp(22px, 4vw, 36px);
  box-shadow: 0 24px 80px rgba(0,0,0,.36);
}

.seo-card h2,
.seo-card h3 {
  margin: 0 0 14px;
  font-size: clamp(1.45rem, 3vw, 2.25rem);
  letter-spacing: -0.025em;
}

.seo-card p, .seo-card li {
  color: var(--muted);
  line-height: 1.75;
}

.seo-card ul {
  margin: 18px 0 0;
  padding-left: 1.1rem;
}

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

.seo-metric {
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 18px;
  background: var(--surface-2);
}

.seo-metric strong {
  display: block;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 1.35rem;
  margin-bottom: 4px;
}

.seo-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.seo-links a {
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 9px 13px;
  color: var(--muted);
  text-decoration: none;
  background: rgba(255,255,255,.035);
}

.seo-footer {
  border-top: 1px solid var(--border);
  padding: 28px 0 42px;
  color: var(--muted);
  font-size: 0.9rem;
}

@media (max-width: 780px) {
  .seo-grid { grid-template-columns: 1fr; }
  .seo-nav { align-items: flex-start; flex-direction: column; }
  h1 { letter-spacing: -0.035em; }
}