* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  font-family: "PingFang SC", -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
  color: #101522;
  background:
    radial-gradient(circle at 16% 0%, rgba(96,165,250,0.26), transparent 28rem),
    radial-gradient(circle at 86% 4%, rgba(45,212,191,0.18), transparent 24rem),
    linear-gradient(135deg, #f7f8ff, #f4fbf9 56%, #eef4ff);
  line-height: 1.72;
}
a {
  color: #2563eb;
}
.layout {
  width: min(1040px, calc(100% - 28px));
  margin: 0 auto;
  padding: 44px 0 70px;
}
.hero {
  padding: clamp(22px, 5vw, 46px) 0 30px;
}
.eyebrow {
  margin: 0 0 10px;
  color: #3b82f6;
  font-size: 13px;
  font-weight: 800;
}
h1 {
  max-width: 760px;
  margin: 0 0 14px;
  font-size: clamp(32px, 5vw, 56px);
  line-height: 1.08;
  letter-spacing: 0;
}
.lead {
  max-width: 760px;
  margin: 0 0 22px;
  color: #5f6f86;
  font-size: 17px;
}
.answer-box {
  max-width: 820px;
  margin: 0 0 22px;
  padding: 18px 20px;
  border: 1px solid #dbe7f7;
  border-radius: 16px;
  background: rgba(255,255,255,0.78);
  box-shadow: 0 16px 42px rgba(74,92,130,0.09);
}
.answer-box strong {
  display: block;
  margin-bottom: 6px;
  color: #101522;
}
.answer-box p {
  margin: 0;
  color: #405169;
}
.primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 18px;
  border-radius: 12px;
  color: #fff;
  background: linear-gradient(135deg, #3b82f6, #667eea);
  text-decoration: none;
  font-weight: 800;
}
.secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 18px;
  border: 1px solid #d8e1ee;
  border-radius: 12px;
  color: #1f2937;
  background: #fff;
  text-decoration: none;
  font-weight: 800;
}
.link-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}
.cards {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}
.card {
  min-height: 170px;
  padding: 22px;
  border: 1px solid #e2e8f0;
  border-radius: 16px;
  background: rgba(255,255,255,0.82);
  box-shadow: 0 18px 48px rgba(74,92,130,0.11);
  color: inherit;
  text-decoration: none;
}
.card span {
  display: inline-flex;
  margin-bottom: 12px;
  padding: 3px 8px;
  border-radius: 8px;
  color: #2563eb;
  background: #eaf2ff;
  font-size: 12px;
  font-weight: 800;
}
.card strong {
  display: block;
  margin-bottom: 8px;
  font-size: 20px;
  line-height: 1.34;
}
.card p {
  margin: 0;
  color: #65758b;
}
.article {
  max-width: 880px;
  padding: clamp(22px, 4vw, 42px);
  border: 1px solid #e2e8f0;
  border-radius: 18px;
  background: rgba(255,255,255,0.86);
  box-shadow: 0 18px 52px rgba(74,92,130,0.12);
}
.article h1 { font-size: clamp(28px, 4vw, 42px); }
.article h2 { margin: 30px 0 10px; font-size: 22px; line-height: 1.3; }
.article p { margin: 0 0 14px; color: #374151; }
.article ul { padding-left: 22px; color: #374151; }
.article li { margin-bottom: 8px; }
.article nav { margin-bottom: 18px; }
.article nav a { color: #2563eb; text-decoration: none; font-weight: 800; }
.article .lead { font-size: 18px; color: #4b5563; }
.note {
  margin: 18px 0;
  padding: 16px 18px;
  border-radius: 14px;
  background: #eef6ff;
  color: #344256;
}
.faq {
  margin-top: 28px;
  padding-top: 10px;
  border-top: 1px solid #e2e8f0;
}
.faq details {
  padding: 14px 0;
  border-bottom: 1px solid #e8eef6;
}
.faq summary {
  cursor: pointer;
  color: #101522;
  font-weight: 800;
}
.faq details p {
  margin-top: 10px;
}
.related {
  margin-top: 28px;
  padding-top: 18px;
  border-top: 1px solid #e2e8f0;
}
.related h2 {
  margin-top: 0;
}
.related-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.related-links a {
  display: inline-flex;
  align-items: center;
  min-height: 42px;
  padding: 0 14px;
  border: 1px solid #d8e1ee;
  border-radius: 12px;
  color: #1f2937;
  background: #fff;
  text-decoration: none;
  font-weight: 800;
}
@media (max-width: 720px) {
  .layout { width: min(100% - 18px, 1040px); padding-top: 18px; }
  .cards { grid-template-columns: 1fr; }
  .card { min-height: 0; border-radius: 14px; }
  .link-actions, .related-links { flex-direction: column; }
  .primary, .secondary, .related-links a { width: 100%; }
}