:root {
  --bg: #ffffff;
  --text: #1f2937;
  --muted: #5b6573;
  --line: #e5e7eb;
  --accent: #2563eb;
  --accent-soft: #eff6ff;
  --card: #f9fafb;
  --max: 1100px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, Segoe UI, Roboto, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
.container { max-width: var(--max); margin: 0 auto; padding: 0 22px; }
header {
  position: sticky; top: 0; z-index: 20;
  background: rgba(255,255,255,.94);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav {
  display: flex; justify-content: space-between; align-items: center;
  padding: 16px 0;
}
.brand { font-weight: 700; font-size: 1.06rem; color: var(--text); }
.nav-links { display: flex; gap: 18px; flex-wrap: wrap; }
.hero {
  padding: 70px 0 36px;
  background: linear-gradient(180deg, #fff 0%, #f8fbff 100%);
  border-bottom: 1px solid var(--line);
}
.hero h1 {
  font-size: clamp(2rem, 4vw, 3.2rem);
  line-height: 1.15;
  margin: 0 0 16px;
}
.hero p {
  font-size: 1.08rem;
  color: var(--muted);
  max-width: 760px;
  margin: 0 0 24px;
}
.actions { display: flex; gap: 14px; flex-wrap: wrap; }
.btn {
  display: inline-block; padding: 12px 18px; border-radius: 12px; font-weight: 600;
  border: 1px solid var(--line); background: white; color: var(--text);
}
.btn.primary { background: var(--accent); color: white; border-color: var(--accent); }
main { padding: 34px 0 70px; }
.grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 18px;
}
.card {
  background: white; border: 1px solid var(--line); border-radius: 18px; padding: 22px;
  box-shadow: 0 10px 30px rgba(17, 24, 39, 0.04);
}
.card h3 { margin-top: 0; margin-bottom: 10px; }
.card p { color: var(--muted); margin: 0 0 10px; }
.section { margin-top: 44px; }
.section h2 { font-size: 1.7rem; margin: 0 0 10px; }
.section p.lead { color: var(--muted); margin-top: 0; }
.callout {
  background: var(--accent-soft); border: 1px solid #cfe0ff; border-radius: 16px; padding: 18px 20px;
}
.two-col {
  display: grid; grid-template-columns: 1.2fr .8fr; gap: 20px;
}
ul.clean, ol.clean { padding-left: 22px; }
li { margin: 7px 0; }
.table-wrap { overflow-x: auto; }
table {
  width: 100%; border-collapse: collapse; background: white; border: 1px solid var(--line);
  border-radius: 16px; overflow: hidden;
}
th, td { text-align: left; padding: 14px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { background: #f8fafc; }
footer { border-top: 1px solid var(--line); color: var(--muted); padding: 24px 0 60px; }
code.inline { background: #f3f4f6; padding: 2px 6px; border-radius: 6px; }
.kpi { font-size: 1.8rem; font-weight: 700; margin-bottom: 8px; }
@media (max-width: 860px) { .two-col { grid-template-columns: 1fr; } .nav { align-items: start; gap: 8px; flex-direction: column; } }