:root {
  color-scheme: dark;
  --bg: #050816;
  --surface: #0f172a;
  --surface-alt: #111827;
  --text: #e5e7eb;
  --muted: #94a3b8;
  --accent: #2dd4bf;
  --accent-2: #7dd3fc;
  --line: rgba(148, 163, 184, 0.18);
  --shadow: 0 24px 70px rgba(2, 6, 23, 0.35);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.7;
  background: radial-gradient(circle at top, rgba(45, 212, 191, 0.08), transparent 34%), var(--bg);
  color: var(--text);
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.container { width: min(1120px, calc(100% - 32px)); margin: 0 auto; }
.site-header {
  position: sticky; top: 0; z-index: 10;
  backdrop-filter: blur(14px);
  background: rgba(5, 8, 22, 0.84);
  border-bottom: 1px solid var(--line);
}
.inner, .nav, .actions, .footer-grid, .section-title, .card-topline { display: flex; }
.inner, .section-title { align-items: center; justify-content: space-between; gap: 20px; }
.inner { min-height: 72px; }
.brand { display: inline-flex; align-items: center; gap: 12px; font-weight: 700; }
.brand-badge {
  width: 40px; height: 40px; border-radius: 12px; display: inline-grid; place-items: center;
  background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: #06211c; font-weight: 800;
}
.nav { gap: 18px; flex-wrap: wrap; }
.nav a, .muted, .footer-note, .text-link { color: var(--muted); }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 44px; padding: 0 18px; border-radius: 999px; border: 1px solid transparent; font-weight: 700;
}
.btn-primary { background: linear-gradient(135deg, var(--accent), #14b8a6); color: #042f2e; }
.btn-secondary { border-color: var(--line); background: rgba(15, 23, 42, 0.72); }
.hero-section, .section, .article-shell { padding: 72px 0; }
.hero-grid, .grid, .faq-grid, .footer-grid { display: grid; gap: 20px; }
.hero-grid { grid-template-columns: 1.2fr 0.8fr; align-items: start; }
.cards-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.panel, .content-card {
  background: rgba(15, 23, 42, 0.92); border: 1px solid var(--line); border-radius: 24px; padding: 24px; box-shadow: var(--shadow);
}
.kicker, .eyebrow {
  color: var(--accent); font-weight: 800; letter-spacing: 0.12em; text-transform: uppercase; font-size: 0.78rem;
}
h1, h2, h3, p { margin-top: 0; }
h1 { font-size: clamp(2.4rem, 4vw, 4rem); line-height: 1.1; }
h2 { font-size: clamp(1.5rem, 2.6vw, 2.2rem); line-height: 1.2; }
.meta-list, .bullet-list, .audience-list { margin: 16px 0 0; padding-left: 20px; }
.meta-list { list-style: none; padding: 0; }
.meta-list li { display: flex; justify-content: space-between; gap: 16px; padding: 10px 0; border-bottom: 1px solid var(--line); }
.meta-list li:last-child { border-bottom: 0; }
.card-index { color: var(--muted); font-weight: 700; }
.table-panel { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th, td { padding: 14px 12px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
.faq-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.faq-item { padding: 22px; border-radius: 20px; background: rgba(15, 23, 42, 0.92); border: 1px solid var(--line); }
.article-header, .article-body, .article-footer-card { max-width: 860px; margin: 0 auto 20px; }
.article-body p, .article-body li { color: #dbe4ee; }
.text-link { color: var(--accent); font-weight: 700; }
.footer { border-top: 1px solid var(--line); padding: 32px 0 48px; }
@media (max-width: 900px) {
  .hero-grid, .cards-3, .faq-grid { grid-template-columns: 1fr; }
  .inner, .section-title { align-items: flex-start; flex-direction: column; }
}