:root {
  --phi: 1.618;
  --phi2: 2.618;
  --phi-inv: 0.618;
  --bg: #0c0f1e;
  --panel: #131b36;
  --paper: #f8f9fc;
  --text: #111827;
  --text-light: #6b7280;
  --line: #e5e7eb;
  --brand: #4f46e5;
  --brand2: #06b6d4;
  --accent: #8b5cf6;
  --ok: #16a34a;
  --warn: #d97706;
  --radius: calc(18px * 0.618);
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, 'Segoe UI', Arial, sans-serif;
  color: var(--text);
  background: #fff;
  line-height: 1.618;
  -webkit-font-smoothing: antialiased;
}

.hero {
  background: radial-gradient(ellipse at 25% 15%, rgba(6,182,212,0.3) 0%, transparent 40%),
              radial-gradient(ellipse at 75% 85%, rgba(79,70,229,0.15) 0%, transparent 35%),
              linear-gradient(138deg, #0c0f1e 0%, #172554 55%, #111827 100%);
  color: #fff;
  padding: calc(18px * 2.618) 20px;
  position: relative;
  overflow: hidden;
}
.wrap {
  max-width: calc(680px * var(--phi));
  margin: 0 auto;
  padding: 0 20px;
}
.nav {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: calc(18px * var(--phi));
}
.nav a {
  color: #dbeafe;
  text-decoration: none;
  border: 1px solid rgba(255,255,255,0.18);
  padding: 8px calc(8px * var(--phi));
  border-radius: 999px;
  font-size: 14px;
  transition: all 0.2s ease;
}
.nav a:hover {
  background: rgba(255,255,255,0.08);
  border-color: rgba(255,255,255,0.35);
}
.eyebrow {
  color: #a5f3fc;
  font-weight: 650;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 13px;
  margin-bottom: 6px;
}
h1 {
  font-size: clamp(32px, calc(4vw * var(--phi)), 50px);
  line-height: 1.08;
  margin: 8px 0 20px;
  font-weight: 750;
  letter-spacing: -0.01em;
  max-width: 18em;
}
h2 {
  font-size: clamp(24px, calc(18px * var(--phi)), 32px);
  line-height: 1.25;
  margin: calc(28px * var(--phi)) 0 14px;
  font-weight: 680;
}
h3 {
  font-size: 22px;
  line-height: 1.3;
  margin: calc(18px * var(--phi)) 0 6px;
  font-weight: 650;
}
.lead {
  font-size: 20px;
  max-width: 30em;
  color: #e5e7eb;
  line-height: 1.6;
}
.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: calc(18px * 0.618) calc(18px * 0.618);
  box-shadow: 0 1px 3px rgba(0,0,0,0.04), 0 4px 16px rgba(15,23,42,0.06);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.card:hover {
  transform: translateY(-2px);
  box-shadow: 0 2px 8px rgba(0,0,0,0.06), 0 8px 28px rgba(15,23,42,0.1);
}
.card.dark {
  background: rgba(255,255,255,0.06);
  border-color: rgba(255,255,255,0.15);
  color: #fff;
}
.section {
  padding: calc(18px * var(--phi2)) 20px;
}
.muted { color: var(--text-light); }
.small { font-size: 14px; }
.badge {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  padding: 4px 12px;
  background: #eef2ff;
  color: #3730a3;
  font-weight: 680;
  font-size: 13px;
}
.cta {
  display: inline-block;
  background: linear-gradient(138deg, var(--brand), var(--brand2));
  color: #fff;
  text-decoration: none;
  font-weight: 700;
  padding: calc(13px * 0.9) calc(18px * 1.1);
  border-radius: var(--radius);
  margin: 8px 8px 8px 0;
  transition: transform 0.12s ease, box-shadow 0.12s ease;
}
.cta:hover { transform: scale(1.02); box-shadow: 0 4px 16px rgba(79,70,229,0.3); }
.cta.secondary { background: #1f2937; }
.table {
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  margin: calc(18px * 0.618) 0;
}
.table table {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
  font-size: 15px;
}
.table th, .table td {
  padding: calc(14px * 0.8) calc(14px * 1.1);
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
  line-height: 1.5;
}
.table th {
  background: #f3f4f6;
  font-weight: 650;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.table tr:last-child td { border-bottom: none; }
.notice {
  border-left: calc(4px * var(--phi)) solid var(--brand);
  background: #eef2ff;
  padding: calc(16px * 0.9) calc(16px * 1.1);
  border-radius: var(--radius);
  margin: calc(18px * var(--phi)) 0;
}
.notice.warn { border-left-color: var(--warn); background: #fff7ed; }
.notice.ok { border-left-color: var(--ok); background: #f0fdf4; }
.toc {
  background: #f8fafc;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: calc(18px * 0.8) calc(18px * 1.1);
  margin: calc(18px * 0.618) 0 calc(18px * var(--phi));
}
.toc a {
  display: block;
  color: #2563eb;
  text-decoration: none;
  margin: 5px 0;
  font-size: 15px;
  line-height: 1.6;
}
.toc a:hover { color: #1d4ed8; }
.article {
  }
.article p, .article li {
  font-size: 18px;
  line-height: 1.68;
  margin: 0 0 calc(18px * 0.618);
}
.compare td:first-child, .compare th:first-child { font-weight: 650; }
.split {
  display: grid;
  grid-template-columns: 1.618fr 1fr;
  gap: calc(18px * var(--phi));
  align-items: start;
}
code {
  background: #f3f4f6;
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.9em;
}
.kpi { font-size: 32px; font-weight: 800; }
.footer {
  background: #0c0f1e;
  color: #cbd5e1;
  padding: calc(18px * 1.618) 20px;
  line-height: 1.7;
}
.footer a { color: #a5f3fc; }
.error-block { text-align: center; padding: 60px 20px; }
@media (max-width: 820px) {
  .grid, .split { grid-template-columns: 1fr; }
  .hero { padding-top: 30px; }
  .section { padding: 30px 16px; }
  h1 { letter-spacing: 0; }
  .article p, .article li { font-size: 17px; }
}


/* Section header */
.section-header {
  margin-bottom: calc(18px * 1.618);
}
.section-header h2 {
  margin-bottom: 6px;
}

/* Card footer and card link */
.card-footer {
  margin-top: calc(18px * 1.2);
  padding-top: calc(18px * 0.618);
  border-top: 1px solid var(--line);
}
.card-link {
  color: var(--brand);
  text-decoration: none;
  font-weight: 600;
  font-size: 15px;
  display: inline-flex;
  align-items: center;
}
.card-link:hover { color: #4338ca; }

/* Stats row */
.stats-row {
  display: flex;
  gap: calc(18px * 1.618);
  margin-top: calc(18px * 1.618);
  flex-wrap: wrap;
}
.stat { text-align: center; }
.stat-value {
  display: block;
  font-size: calc(18px * 1.618);
  font-weight: 750;
  color: var(--brand);
  line-height: 1.1;
}
.stat-label {
  display: block;
  font-size: 13px;
  color: var(--text-light);
  margin-top: 4px;
}

/* Info card */
.info-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: calc(18px * 0.8) calc(18px * 1.1);
  box-shadow: 0 1px 3px rgba(0,0,0,0.04);
}
.info-card h3 {
  margin-top: 0;
  margin-bottom: calc(18px * 0.618);
  font-size: 20px;
}
.info-card ul { margin: 0; padding: 0; list-style: none; }
.info-card li {
  padding: 8px 0;
  border-bottom: 1px solid var(--line);
  font-size: 15px;
  line-height: 1.55;
}
.info-card li:last-child { border-bottom: none; }

/* Card badge */
.card .badge { margin-bottom: 10px; }

/* Card h3 */
.card h3 {
  margin: 0 0 8px;
  font-size: calc(18px * 1.1);
  line-height: 1.3;
}
.card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.55;
}

/* Grid gap */
.grid { gap: calc(18px * 1.2); }

/* Hide disclosure link in nav */
.nav a[href*="disclosure"] { display: none; }