:root {
  color-scheme: dark;
  --bg: #07111f;
  --surface: #0e1c30;
  --surface-2: #142640;
  --text: #f5f8ff;
  --muted: #b8c4d6;
  --accent: #62e6c9;
  --accent-2: #7ba8ff;
  --line: rgba(255, 255, 255, 0.12);
  --max: 1120px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 10% 0%, rgba(98, 230, 201, 0.15), transparent 30rem),
    radial-gradient(circle at 90% 10%, rgba(123, 168, 255, 0.16), transparent 32rem),
    var(--bg);
  line-height: 1.65;
}
a { color: inherit; }
.container { width: min(calc(100% - 32px), var(--max)); margin-inline: auto; }
.site-header { border-bottom: 1px solid var(--line); background: rgba(7, 17, 31, 0.88); }
.nav { min-height: 68px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { color: var(--text); text-decoration: none; font-weight: 850; letter-spacing: -0.02em; }
.nav-links { display: flex; flex-wrap: wrap; gap: 16px; }
.nav-links a { color: var(--muted); text-decoration: none; font-size: 0.94rem; }
.nav-links a:hover, .card a:hover { color: var(--accent); }
.hero { padding: 88px 0 56px; }
.eyebrow { color: var(--accent); text-transform: uppercase; letter-spacing: 0.13em; font-size: 0.78rem; font-weight: 800; }
h1 { max-width: 880px; margin: 12px 0 20px; font-size: clamp(2.25rem, 6vw, 4.8rem); line-height: 1.02; letter-spacing: -0.05em; }
.lead { max-width: 760px; color: var(--muted); font-size: clamp(1.05rem, 2vw, 1.25rem); }
.section { padding: 32px 0 72px; }
.section h2 { font-size: clamp(1.6rem, 3vw, 2.35rem); letter-spacing: -0.03em; }
.grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.card { min-height: 210px; padding: 24px; border: 1px solid var(--line); border-radius: 22px; background: linear-gradient(145deg, var(--surface), var(--surface-2)); }
.card h2, .card h3 { margin-top: 0; line-height: 1.2; }
.card p { color: var(--muted); }
.card a { color: var(--accent); font-weight: 750; text-decoration: none; }
.note { padding: 24px; border-left: 4px solid var(--accent-2); border-radius: 10px; background: rgba(123, 168, 255, 0.09); color: var(--muted); }
.breadcrumbs { padding-top: 24px; color: var(--muted); font-size: 0.92rem; }
.breadcrumbs a { color: var(--accent); text-decoration: none; }
.site-footer { margin-top: 40px; padding: 32px 0; border-top: 1px solid var(--line); color: var(--muted); }
@media (max-width: 820px) { .grid { grid-template-columns: 1fr; } .nav { align-items: flex-start; flex-direction: column; padding: 18px 0; } }