:root {
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: #1f2937;
  background: #eef2f7;
}

* { box-sizing: border-box; }
body { margin: 0; }
a { color: #2563eb; }
[hidden] { display: none !important; }

.info-shell {
  width: min(980px, calc(100% - 28px));
  margin: 24px auto 48px;
}

.info-header,
.info-card {
  border: 1px solid #dbe3ef;
  border-radius: 18px;
  background: #fff;
  box-shadow: 0 16px 45px rgba(15, 23, 42, 0.08);
}

.info-header {
  padding: 24px;
  color: #fff;
  background: linear-gradient(130deg, #172554, #2563eb);
}

.info-header__top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
}

.info-header h1 { margin: 5px 0 0; }
.info-header p { margin: 0; color: rgba(255,255,255,.75); }
.info-back {
  color: #fff;
  text-decoration: none;
  white-space: nowrap;
}

.info-notice {
  margin-top: 17px;
  padding: 12px 14px;
  border: 1px solid rgba(255,255,255,.2);
  border-radius: 12px;
  background: rgba(255,255,255,.1);
}

.info-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin: 16px 0;
}

.info-nav a {
  padding: 8px 10px;
  border: 1px solid #dbe3ef;
  border-radius: 999px;
  color: #334155;
  background: #fff;
  font-size: 12px;
  text-decoration: none;
}

.info-nav a:hover { border-color: #2563eb; color: #2563eb; }

.info-card {
  margin-bottom: 14px;
  padding: 22px;
  scroll-margin-top: 18px;
}

.info-card h2 { margin: 0 0 12px; color: #172554; }
.info-card h3 { margin: 20px 0 8px; color: #172554; }
.info-card p,
.info-card li { line-height: 1.62; }
.info-card p:last-child { margin-bottom: 0; }
.info-muted { color: #64748b; }
.info-placeholder {
  padding: 12px;
  border-left: 4px solid #f59e0b;
  border-radius: 0 10px 10px 0;
  background: #fffbeb;
}
.info-footer { color: #64748b; font-size: 12px; text-align: center; }

@media (max-width: 620px) {
  .info-header__top { flex-direction: column; }
  .info-card { padding: 17px; }
}