:root {
  --bg: #f3f6fb;
  --surface: #ffffff;
  --text: #0f172a;
  --muted: #475569;
  --line: #dbe4f0;
  --brand: #1d4ed8;
  --brand-dark: #1e3a8a;
  --ok: #0f766e;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Inter", "Segoe UI", Roboto, Arial, sans-serif;
  color: var(--text);
  background: radial-gradient(circle at 20% 0%, #e7efff 0%, #f3f6fb 48%, #f6f8fc 100%);
  line-height: 1.65;
}

a { color: var(--brand); text-decoration: none; }
a:hover { text-decoration: underline; }

.seo-nav {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(8px);
  background: rgba(15, 23, 42, 0.92);
  border-bottom: 1px solid rgba(148, 163, 184, 0.25);
}

.seo-nav-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0.75rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  color: #fff;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.nav-links {
  display: flex;
  gap: 0.9rem;
  flex-wrap: wrap;
}

.nav-links a {
  color: #cbd5e1;
  font-size: 0.86rem;
  font-weight: 600;
}

.nav-links a:hover { color: #fff; }

.wrap {
  max-width: 1080px;
  margin: 0 auto;
  padding: 2rem 1.25rem 4rem;
}

.hero {
  background: linear-gradient(145deg, #0f172a 0%, #1e3a8a 100%);
  border-radius: 22px;
  padding: 2rem;
  color: #fff;
  box-shadow: 0 14px 34px rgba(15, 23, 42, 0.26);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  background: rgba(59, 130, 246, 0.2);
  border: 1px solid rgba(147, 197, 253, 0.35);
  color: #bfdbfe;
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  border-radius: 999px;
  padding: 0.3rem 0.7rem;
}

.hero h1 {
  margin: 0.85rem 0 0.6rem;
  line-height: 1.2;
  font-size: clamp(1.55rem, 3.6vw, 2.4rem);
}

.hero p {
  margin: 0;
  color: #dbeafe;
  max-width: 760px;
}

.cta-row {
  margin-top: 1.1rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 11px;
  padding: 0.66rem 1rem;
  font-size: 0.9rem;
  font-weight: 700;
  border: 1px solid transparent;
}

.btn-primary {
  background: #2563eb;
  color: #fff;
}

.btn-primary:hover {
  background: #1d4ed8;
  text-decoration: none;
}

.btn-light {
  background: rgba(255, 255, 255, 0.14);
  color: #e2e8f0;
  border-color: rgba(255, 255, 255, 0.24);
}

.btn-light:hover {
  background: rgba(255, 255, 255, 0.24);
  color: #fff;
  text-decoration: none;
}

.card {
  margin-top: 1rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 1.2rem;
  box-shadow: 0 10px 22px rgba(15, 23, 42, 0.08);
}

.card h2 {
  margin: 0 0 0.85rem;
  font-size: 1.22rem;
}

.shot-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.9rem;
}

.shot {
  border: 1px solid var(--line);
  border-radius: 13px;
  overflow: hidden;
  background: #f8fafc;
}

.shot img {
  display: block;
  width: 100%;
  height: auto;
}

.shot figcaption {
  margin: 0;
  padding: 0.55rem 0.65rem;
  font-size: 0.8rem;
  color: var(--muted);
  border-top: 1px solid var(--line);
  background: #fff;
}

ol.steps {
  margin: 0;
  padding-left: 1.2rem;
}

ol.steps li { margin-bottom: 0.45rem; }

.examples {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 0.65rem;
}

.example {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 0.72rem;
  background: #f8fafc;
}

.example strong {
  display: block;
  font-size: 0.88rem;
  margin-bottom: 0.2rem;
}

.example span {
  color: var(--muted);
  font-size: 0.84rem;
}

.faq details {
  border: 1px solid var(--line);
  border-radius: 11px;
  padding: 0.65rem 0.75rem;
  background: #fff;
  margin-bottom: 0.5rem;
}

.faq summary {
  cursor: pointer;
  font-weight: 700;
}

.faq p {
  margin: 0.45rem 0 0;
  color: var(--muted);
}

.footer-note {
  margin-top: 1.2rem;
  font-size: 0.78rem;
  color: #64748b;
}

@media (max-width: 860px) {
  .shot-grid { grid-template-columns: 1fr; }
  .hero { padding: 1.3rem; }
  .nav-links { display: none; }
}