:root {
  --bg: #f7f9f8;
  --panel: #ffffff;
  --panel-strong: #f1f5f4;
  --ink: #151b1d;
  --muted: #687579;
  --line: #dfe7e5;
  --teal: #0f9f8f;
  --teal-dark: #087768;
  --shadow: 0 18px 55px rgba(26, 39, 42, 0.10);
  --radius: 8px;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  background:
    linear-gradient(90deg, rgba(15, 159, 143, 0.045) 1px, transparent 1px),
    linear-gradient(0deg, rgba(15, 159, 143, 0.045) 1px, transparent 1px),
    var(--bg);
  background-size: 34px 34px;
  color: var(--ink);
}
.page {
  width: min(1120px, 100%);
  margin: 0 auto;
  padding: 18px 22px 34px;
}
.topbar, .brand, .nav, .hero-actions, .section-head {
  display: flex;
  align-items: center;
}
.topbar {
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 14px;
}
.brand {
  gap: 10px;
  color: inherit;
  text-decoration: none;
}
.mark {
  width: 30px;
  height: 30px;
  color: var(--teal);
}
.brand strong {
  display: block;
  font-size: 17px;
  line-height: 1.1;
}
.brand span {
  display: block;
  margin-top: 3px;
  color: var(--muted);
  font-size: 12px;
}
.nav {
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 16px;
  padding: 8px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(255,255,255,0.78);
  box-shadow: 0 8px 24px rgba(16, 27, 31, 0.05);
}
.nav a, .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 34px;
  border-radius: var(--radius);
  text-decoration: none;
  font-size: 12px;
  font-weight: 800;
}
.nav a {
  padding: 0 10px;
  color: var(--muted);
}
.nav a:hover, .nav a[aria-current="page"] {
  color: var(--ink);
  background: var(--panel-strong);
}
.btn {
  gap: 8px;
  min-height: 40px;
  padding: 0 14px;
  color: var(--ink);
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: 0 6px 18px rgba(16, 27, 31, 0.06);
}
.btn.primary {
  color: #fff;
  background: var(--teal-dark);
  border-color: var(--teal-dark);
}
.hero, .section, .card, .table-wrap {
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.92);
  box-shadow: var(--shadow);
}
.hero {
  padding: 30px;
  border-radius: 14px;
  margin-bottom: 16px;
}
.hero h1 {
  max-width: 820px;
  margin: 0;
  font-size: 36px;
  line-height: 1.08;
  letter-spacing: 0;
}
.hero p {
  max-width: 760px;
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.65;
}
.hero-actions {
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 20px;
}
.section {
  padding: 22px;
  border-radius: 14px;
  margin-top: 16px;
}
.section-head {
  justify-content: space-between;
  align-items: flex-end;
  gap: 20px;
  margin-bottom: 14px;
}
.section h2 {
  margin: 0;
  font-size: 22px;
  line-height: 1.15;
}
.section-head p {
  max-width: 680px;
  margin: 7px 0 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.55;
}
.grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}
.grid.two {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}
.card {
  border-radius: 10px;
  padding: 15px;
  min-width: 0;
  box-shadow: none;
}
.card h3 {
  margin: 0 0 8px;
  font-size: 15px;
  line-height: 1.25;
}
.card p, .card li {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.55;
}
.card p { margin: 0 0 12px; }
.card ul { margin: 0; padding-left: 18px; }
.snippet {
  margin: 10px 0 0;
  padding: 12px;
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  color: #172023;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 12px;
  line-height: 1.65;
}
table {
  width: 100%;
  border-collapse: collapse;
}
th, td {
  padding: 12px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
  font-size: 13px;
  line-height: 1.5;
}
th {
  color: var(--ink);
  background: var(--panel-strong);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: .02em;
}
tr:last-child td { border-bottom: 0; }
.table-wrap {
  border-radius: 10px;
  overflow: hidden;
}
.footer {
  margin-top: 20px;
  color: var(--muted);
  font-size: 12px;
}
@media (max-width: 860px) {
  .page { padding: 14px 12px 24px; }
  .topbar { align-items: flex-start; flex-direction: column; }
  .hero { padding: 22px; }
  .hero h1 { font-size: 28px; }
  .section-head { display: block; }
  .grid, .grid.two { grid-template-columns: 1fr; }
  .nav a { flex: 1 1 calc(50% - 8px); }
  .table-wrap { overflow-x: auto; }
  th, td { min-width: 130px; }
}