:root {
  --pv-ink: #17212b;
  --pv-muted: #52606d;
  --pv-line: #dfe5ea;
  --pv-bg: #f7f9fa;
  --pv-accent: #f5a623;
  --pv-green: #087f5b;
}

* { box-sizing: border-box; }
body { margin: 0; color: var(--pv-ink); background: #fff; font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; line-height: 1.65; }
a { color: #9a5b00; }
.site-nav { background: var(--pv-ink); color: #fff; }
.nav-inner { max-width: 1120px; height: 64px; margin: 0 auto; padding: 0 20px; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.brand { color: var(--pv-accent); text-decoration: none; font-size: 1.35rem; font-weight: 800; }
.nav-links { display: flex; flex-wrap: wrap; gap: 18px; }
.nav-links a { color: #e9eef2; text-decoration: none; font-size: .9rem; font-weight: 650; }
.hero { background: #edf4f0; border-bottom: 1px solid #dbe6df; }
.hero-inner { max-width: 960px; margin: 0 auto; padding: 48px 20px 42px; }
.eyebrow { margin: 0 0 8px; color: var(--pv-green); font-size: .78rem; font-weight: 800; letter-spacing: 0; text-transform: uppercase; }
h1 { max-width: 850px; margin: 0; font-size: clamp(2rem, 5vw, 3.25rem); line-height: 1.12; letter-spacing: 0; }
.answer { max-width: 860px; margin: 18px 0 0; font-size: 1.15rem; color: #283844; }
.answer strong { color: #0b6b4d; }
.page { max-width: 960px; margin: 0 auto; padding: 36px 20px 72px; }
.breadcrumbs { margin-bottom: 22px; font-size: .86rem; color: var(--pv-muted); }
.breadcrumbs a { color: inherit; }
h2 { margin: 38px 0 12px; font-size: 1.55rem; line-height: 1.25; letter-spacing: 0; }
h3 { margin: 24px 0 10px; font-size: 1.12rem; letter-spacing: 0; }
p { margin: 0 0 16px; }
ul, ol { padding-left: 22px; }
li { margin-bottom: 8px; }
.answer-grid, .path-grid, .metric-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; margin: 22px 0; }
.metric { border: 1px solid var(--pv-line); background: var(--pv-bg); padding: 16px; border-radius: 6px; }
.metric strong { display: block; font-size: 1.3rem; color: var(--pv-ink); }
.metric span { color: var(--pv-muted); font-size: .88rem; }
.callout { margin: 22px 0; padding: 18px 20px; border-left: 4px solid var(--pv-accent); background: #fff8e8; }
.boundary { margin: 24px 0; padding: 16px 18px; border: 1px solid #cbd6df; background: #f5f8fa; border-radius: 6px; color: #3f4f5d; }
.formula { overflow-x: auto; padding: 16px 18px; border: 1px solid var(--pv-line); background: #17212b; color: #f7fafc; border-radius: 6px; font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: .9rem; white-space: nowrap; }
.table-wrap { overflow-x: auto; margin: 16px 0 28px; border: 1px solid var(--pv-line); border-radius: 6px; }
table { width: 100%; min-width: 760px; border-collapse: collapse; font-size: .88rem; }
th, td { padding: 12px 13px; border-bottom: 1px solid var(--pv-line); border-right: 1px solid var(--pv-line); text-align: left; vertical-align: top; }
th:last-child, td:last-child { border-right: 0; }
thead th { background: #edf2f5; color: #26343f; font-weight: 800; }
tbody tr:last-child td { border-bottom: 0; }
.cell-main { display: block; font-weight: 800; color: #14212b; }
.cell-sub { display: block; color: var(--pv-muted); font-size: .78rem; }
.cta-band { margin: 34px 0; padding: 22px; background: var(--pv-ink); color: #fff; border-radius: 6px; }
.cta-band h2, .cta-band h3 { margin-top: 0; color: #fff; }
.cta-row { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 16px; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: 10px 15px; border: 1px solid var(--pv-accent); border-radius: 6px; background: var(--pv-accent); color: var(--pv-ink); text-decoration: none; font-weight: 800; }
.button.secondary { background: transparent; color: #fff; border-color: #91a0ac; }
.path-card { padding: 16px; border: 1px solid var(--pv-line); border-radius: 6px; background: #fff; }
.path-card strong { display: block; margin-bottom: 6px; }
.path-card a { font-weight: 750; }
.source-note { font-size: .86rem; color: var(--pv-muted); }
.site-footer { border-top: 1px solid var(--pv-line); background: var(--pv-bg); }
.footer-inner { max-width: 960px; margin: 0 auto; padding: 28px 20px; font-size: .85rem; color: var(--pv-muted); }

@media (max-width: 720px) {
  .nav-inner { align-items: flex-start; height: auto; padding-top: 14px; padding-bottom: 14px; }
  .nav-links { justify-content: flex-end; gap: 10px 14px; }
  .answer-grid, .path-grid, .metric-grid { grid-template-columns: 1fr; }
  .hero-inner { padding-top: 36px; }
  table { min-width: 680px; }
}

@media print {
  .site-nav, .site-footer, .cta-band { display: none; }
  .page, .hero-inner { max-width: none; padding-left: 0; padding-right: 0; }
  .table-wrap { overflow: visible; }
  table { min-width: 0; font-size: 8pt; }
}