*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: #fff;
  color: #1f2937;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
.layout { max-width: 720px; margin: 0 auto; padding: 2rem 1.5rem; }
h1 { font-size: 2rem; font-weight: 800; line-height: 1.2; color: #14213d; margin-bottom: 0.5rem; }
h2 { font-size: 1.35rem; font-weight: 700; color: #14213d; margin-top: 2.5rem; margin-bottom: 0.75rem; }
h3 { font-size: 1.1rem; font-weight: 600; color: #1f2937; margin-top: 1.75rem; margin-bottom: 0.5rem; }
p { margin-bottom: 1.25rem; font-size: 1.025rem; color: #374151; }
p.lead { font-size: 1.15rem; color: #4b5563; margin-bottom: 2rem; }
a { color: #2563eb; }
a:hover { color: #1d4ed8; }
ul, ol { margin-bottom: 1.25rem; padding-left: 1.5rem; }
li { margin-bottom: 0.5rem; font-size: 1.025rem; color: #374151; }
blockquote {
  border-left: 4px solid #14213d; padding: 1rem 1.5rem; margin: 1.5rem 0;
  background: #f1f5f9; border-radius: 0 8px 8px 0;
  font-style: italic; color: #4b5563;
}
blockquote p { margin-bottom: 0; }
code { font-size: 0.9em; background: #f1f5f9; padding: 0.15rem 0.4rem; border-radius: 4px; }
hr { border: none; border-top: 1px solid #e5e7eb; margin: 2rem 0; }
.site-header {
  background: #fff; position: sticky; top: 0; z-index: 1000;
  border-bottom: 1px solid #e5e7eb;
}
.site-header .inner {
  max-width: 1200px; margin: 0 auto; display: flex; align-items: center;
  justify-content: space-between; padding: 0.75rem 1.5rem;
}
.site-header img { height: 4.5rem; width: auto; }
.nav-link {
  padding: 6px 12px; border-radius: 6px; font-size: 0.75rem; font-weight: 500;
  text-transform: uppercase; letter-spacing: 0.05em; color: rgba(0,0,0,0.7);
  text-decoration: none; transition: all 0.15s; white-space: nowrap;
}
.nav-link:hover { color: #fff; background: #000; }
.mobile-nav-link {
  display: block; padding: 12px 0; font-size: 0.875rem; font-weight: 500;
  text-transform: uppercase; letter-spacing: 0.05em; color: rgba(0,0,0,0.7);
  text-decoration: none; transition: color 0.15s;
}
.mobile-nav-link:hover { color: #000; }
.site-header .desktop-nav { display: none; align-items: center; gap: 0.25rem; }
@media (min-width: 640px) {
  .site-header .desktop-nav { display: flex; }
  #menu-toggle { display: none; }
  #mobile-menu { display: none; }
}
.site-footer {
  background: #fff; border-top: 1px solid rgba(0,0,0,0.06); padding: 5rem 1.5rem 3rem;
}
.site-footer .brand { margin-bottom: 3rem; }
.site-footer .brand img { height: 4.5rem; width: auto; display: block; margin-bottom: 1rem; }
.site-footer .brand .name { font-size: 1.5rem; font-weight: 700; color: #000; letter-spacing: -0.01em; }
.site-footer .brand .tagline {
  font-size: 0.8rem; color: rgba(0,0,0,0.35); margin-top: 0;
  max-width: 360px; line-height: 1.6;
}
.site-footer .divider { border-top: 1px solid rgba(0,0,0,0.06); margin-bottom: 2rem; }
.site-footer .links { display: flex; flex-wrap: wrap; gap: 1.5rem; margin-bottom: 2rem; }
.site-footer .links a {
  font-size: 0.7rem; color: rgba(0,0,0,0.5); text-decoration: none; transition: color 0.2s;
  text-transform: uppercase; letter-spacing: 0.05em;
}
.site-footer .links a:hover { color: #000; }
.site-footer .divider2 { border-top: 1px solid rgba(0,0,0,0.04); margin-bottom: 2rem; }
.site-footer .copyright { color: rgba(0,0,0,0.25); font-size: 0.6rem; }
.back-link { display: inline-flex; align-items: center; gap: 0.4rem; font-size: 0.9rem; color: #6b7280; text-decoration: none; margin-bottom: 2rem; }
.back-link:hover { color: #14213d; }
.meta { font-size: 0.85rem; color: #9ca3af; margin-bottom: 2rem; }
.tool-cta {
  background: #14213d; color: #fff; border-radius: 12px; padding: 2rem;
  text-align: center; margin: 2.5rem 0;
}
.tool-cta h2 { color: #fff; margin-top: 0; }
.tool-cta p { color: #cbd5e1; margin-bottom: 1.5rem; }
.tool-cta .btn {
  display: inline-block; background: #fff; color: #14213d; font-weight: 700;
  padding: 0.75rem 2rem; border-radius: 10px; text-decoration: none;
  font-size: 1rem; transition: transform 0.15s;
}
.tool-cta .btn:hover { transform: translateY(-1px); }
.breadcrumb { display: flex; align-items: center; gap: 0.5rem; font-size: 0.85rem; color: #9ca3af; margin-bottom: 1.5rem; }
.breadcrumb a { color: #6b7280; text-decoration: none; }
.breadcrumb a:hover { color: #374151; text-decoration: underline; }
table { width: 100%; border-collapse: collapse; margin: 1.5rem 0; }
th, td { padding: 0.6rem 0.8rem; text-align: left; font-size: 0.95rem; border-bottom: 1px solid #e5e7eb; }
th { background: #f8fafc; font-weight: 600; color: #1f2937; }
.answer-capsule {
  background: #f8fafc;
  border-left: 3px solid #14213d;
  border-radius: 0 8px 8px 0;
  padding: 1rem 1.5rem;
  margin-bottom: 1.25rem;
}
.answer-capsule p { margin-bottom: 0; }

@media (max-width: 640px) {
  .layout { padding: 1.5rem 1rem; }
  h1 { font-size: 1.5rem; }
  .site-header .inner { padding: 0.7rem 1rem; }
}