*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --accent: #4A7FD4;
  --accent-dark: #3A6FC4;
  --accent-light: #EBF2FF;
  --bg: #F4F6FA;
  --card: #ffffff;
  --border: #DDE3EE;
  --text: #1A2132;
  --muted: #6B7A99;
  --success: #22C55E;
  --radius: 12px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.6;
}

a { color: var(--accent); }
a:hover { color: var(--accent-dark); }

/* Nav */
nav {
  background: #fff;
  padding: 0 32px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border);
}
.nav-logo img { height: 40px; display: block; }
.nav-links {
  display: flex;
  align-items: center;
  gap: 20px;
}
.nav-links a {
  color: var(--muted);
  text-decoration: none;
  font-size: .875rem;
  font-weight: 600;
}
.nav-links a:hover { color: var(--accent); }
.nav-cta {
  background: var(--accent);
  color: #fff !important;
  font-weight: 600;
  font-size: .875rem;
  padding: 7px 18px;
  border-radius: 8px;
  text-decoration: none;
  transition: opacity .15s;
}
.nav-cta:hover { opacity: .85; color: #fff; }

/* Page hero */
.page-hero {
  background: linear-gradient(135deg, var(--accent) 0%, #6B9FE8 100%);
  color: #fff;
  text-align: center;
  padding: 56px 24px 64px;
}
.page-hero h1 {
  font-size: 2.2rem;
  font-weight: 800;
  letter-spacing: -.5px;
  margin-bottom: 14px;
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
}
.page-hero .lead {
  font-size: 1.05rem;
  opacity: .92;
  max-width: 620px;
  margin: 0 auto;
  line-height: 1.65;
}
.page-hero .lead strong { color: #fff; }

/* Layout */
.page-wrap {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 16px 80px;
}

.content-block {
  margin-top: 40px;
}

.content-block:first-child {
  margin-top: -28px;
}

.content-block h2 {
  font-size: 1.45rem;
  font-weight: 800;
  letter-spacing: -.4px;
  margin-bottom: 12px;
}

.content-block h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin: 20px 0 8px;
}

.content-block p {
  color: var(--text);
  font-size: .97rem;
  line-height: 1.7;
  margin-bottom: 14px;
}

.content-block p:last-child { margin-bottom: 0; }

.content-card {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: 0 2px 12px rgba(0,0,0,.06);
  padding: 28px 28px 24px;
}

.intro-card {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: 0 4px 24px rgba(0,0,0,.09);
  padding: 32px;
}

.intro-card p {
  font-size: .97rem;
  line-height: 1.7;
  margin-bottom: 14px;
}

.intro-card p:last-of-type { margin-bottom: 20px; }

/* CTAs */
.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 20px;
}

.btn-primary {
  display: inline-block;
  padding: 13px 24px;
  background: var(--accent);
  color: #fff !important;
  font-weight: 700;
  font-size: .95rem;
  border-radius: 10px;
  text-decoration: none;
  transition: background .15s;
  border: none;
  cursor: pointer;
}

.btn-primary:hover {
  background: var(--accent-dark);
  color: #fff;
}

.btn-secondary {
  display: inline-block;
  padding: 13px 24px;
  background: #fff;
  color: var(--accent) !important;
  font-weight: 700;
  font-size: .95rem;
  border-radius: 10px;
  text-decoration: none;
  border: 2px solid var(--accent);
  transition: background .15s;
}

.btn-secondary:hover {
  background: var(--accent-light);
  color: var(--accent-dark) !important;
}

/* Tables */
.content-table-wrap {
  overflow-x: auto;
  margin: 16px 0;
}

.content-table {
  width: 100%;
  border-collapse: collapse;
  font-size: .9rem;
  background: var(--card);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0,0,0,.05);
}

.content-table th,
.content-table td {
  padding: 12px 14px;
  text-align: left;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}

.content-table th {
  background: var(--accent-light);
  color: var(--text);
  font-weight: 700;
  font-size: .82rem;
  text-transform: uppercase;
  letter-spacing: .04em;
}

.content-table tr:last-child td { border-bottom: none; }

.content-table td strong { color: var(--text); }

/* Blockquote */
.content-quote {
  margin: 20px 0;
  padding: 18px 22px;
  background: var(--accent-light);
  border-left: 4px solid var(--accent);
  border-radius: 0 var(--radius) var(--radius) 0;
  font-size: .97rem;
  line-height: 1.65;
}

.content-quote strong { color: var(--text); }

/* Lists */
.content-list {
  margin: 12px 0 16px 20px;
  color: var(--text);
  font-size: .95rem;
}

.content-list li { margin-bottom: 6px; }

/* FAQ */
.faq { display: flex; flex-direction: column; gap: 12px; }
.faq-item {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: 0 2px 8px rgba(0,0,0,.06);
  overflow: hidden;
}
.faq-q {
  width: 100%;
  text-align: left;
  padding: 18px 20px;
  font-weight: 700;
  font-size: .95rem;
  background: none;
  border: none;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--text);
}
.faq-q:hover { background: var(--accent-light); }
.faq-q .arrow { font-size: .8rem; transition: transform .2s; color: var(--muted); }
.faq-q.open .arrow { transform: rotate(180deg); }
.faq-a {
  display: none;
  padding: 0 20px 18px;
  color: var(--muted);
  font-size: .9rem;
  line-height: 1.6;
}
.faq-a.open { display: block; }

/* Desktop CTA */
.desktop-section { margin-top: 48px; }
.desktop-card {
  background: linear-gradient(135deg, #1A2132 0%, #2D3A56 100%);
  border-radius: var(--radius);
  padding: 36px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.desktop-card .dc-text h2 {
  color: #fff;
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 8px;
}
.desktop-card .dc-text p {
  color: #9BA8C0;
  font-size: .95rem;
  line-height: 1.6;
  margin-bottom: 0;
}
.desktop-card ul {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.desktop-card ul li {
  color: #CBD5E8;
  font-size: .9rem;
}
.desktop-card ul li::before {
  content: "✓  ";
  color: var(--success);
  font-weight: 700;
}
.buy-btn {
  flex-shrink: 0;
  padding: 14px 28px;
  background: var(--accent);
  color: #fff;
  font-weight: 700;
  font-size: 1rem;
  border: none;
  border-radius: 10px;
  cursor: pointer;
  white-space: nowrap;
  transition: background .15s;
  text-decoration: none;
  display: inline-block;
}
.buy-btn:hover { background: var(--accent-dark); color: #fff; }
.buy-note {
  color: #6B8FC0;
  font-size: .78rem;
  text-align: center;
  margin-top: 10px;
}

/* Related links */
.related-links {
  margin-top: 48px;
  padding-top: 28px;
  border-top: 1px solid var(--border);
}
.related-links h2 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 12px;
}
.related-links ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.related-links a {
  font-weight: 600;
  font-size: .92rem;
  text-decoration: none;
}
.related-links a:hover { text-decoration: underline; }

/* References */
.references {
  margin-top: 32px;
  font-size: .85rem;
  color: var(--muted);
}
.references h2 {
  font-size: .95rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text);
}
.references ol {
  margin-left: 20px;
}
.references a { word-break: break-all; }

/* Footer */
footer {
  text-align: center;
  padding: 24px 16px;
  color: var(--muted);
  font-size: .85rem;
  border-top: 1px solid var(--border);
}
.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px 20px;
  margin-bottom: 12px;
}
.footer-links a {
  color: var(--muted);
  text-decoration: none;
  font-size: .85rem;
}
.footer-links a:hover { color: var(--accent); }

@media (max-width: 640px) {
  .nav-links .nav-text-link { display: none; }
  .page-hero h1 { font-size: 1.75rem; }
  .desktop-card { flex-direction: column; text-align: center; }
  .desktop-card ul { align-items: center; }
  .content-card, .intro-card { padding: 22px 20px; }
}