* { box-sizing: border-box; margin: 0; padding: 0; }
:root {
  --blue: #0078d4;
  --blue-dark: #005a9e;
  --text: #172033;
  --muted: #5a6078;
  --bg: #f7f9fc;
  --surface: #ffffff;
  --border: #e2e6ed;
}
body {
  background: var(--bg);
  color: var(--text);
  font-family: "Segoe UI", -apple-system, BlinkMacSystemFont, sans-serif;
  line-height: 1.7;
}
header, main, footer {
  max-width: 860px;
  margin: 0 auto;
  padding: 0 22px;
}
header { padding-top: 28px; }
.back {
  display: inline-block;
  margin-bottom: 44px;
  color: var(--muted);
  font-size: 14px;
  text-decoration: none;
}
.back:hover { color: var(--blue); }
.eyebrow {
  color: var(--blue);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 12px;
}
h1 {
  font-size: clamp(34px, 6vw, 56px);
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin-bottom: 18px;
}
.lead {
  color: var(--muted);
  font-size: 19px;
  max-width: 740px;
  margin-bottom: 28px;
}
.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 54px;
}
.btn {
  background: var(--blue);
  color: white;
  border-radius: 9px;
  display: inline-flex;
  font-weight: 700;
  padding: 12px 20px;
  text-decoration: none;
}
.btn.secondary {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
}
section {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  margin-bottom: 20px;
  padding: 28px;
}
h2 {
  font-size: 25px;
  line-height: 1.25;
  margin-bottom: 14px;
}
h3 {
  font-size: 18px;
  margin: 22px 0 8px;
}
p, li { color: var(--muted); }
p { margin-bottom: 14px; }
ul, ol { margin: 12px 0 14px 22px; }
li { margin-bottom: 8px; }
table {
  border-collapse: collapse;
  margin: 18px 0;
  width: 100%;
}
th, td {
  border: 1px solid var(--border);
  padding: 10px 12px;
  text-align: left;
  vertical-align: top;
}
th { background: #f3f7fb; color: var(--text); }
blockquote {
  border-left: 3px solid var(--blue);
  color: var(--text);
  margin: 18px 0;
  padding-left: 16px;
}
.faq details {
  border-top: 1px solid var(--border);
  padding: 14px 0;
}
.faq details:first-child { border-top: 0; }
.faq summary {
  color: var(--text);
  cursor: pointer;
  font-weight: 700;
}
footer {
  color: var(--muted);
  font-size: 13px;
  padding-bottom: 48px;
  padding-top: 20px;
}
footer a { color: var(--blue); }
@media (max-width: 640px) {
  section { padding: 22px; }
  .cta-row { margin-bottom: 34px; }
}