:root {
  --bg: #ffffff;
  --ink: #16181d;
  --muted: #5f6773;
  --line: #e4e7ec;
  --accent: #1f5fbf;
  --soft: #f6f8fa;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

.wrap { max-width: 980px; margin: 0 auto; padding: 0 24px; }

.topbar {
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.92);
  position: sticky;
  top: 0;
  backdrop-filter: saturate(180%) blur(8px);
}

.topbar .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--ink);
  text-decoration: none;
}

nav a {
  color: var(--muted);
  text-decoration: none;
  margin-left: 22px;
  font-size: 15px;
}

nav a:hover { color: var(--accent); }

.hero { padding: 72px 0 40px; max-width: 760px; }

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 12px;
  font-weight: 600;
  color: var(--accent);
  margin: 0 0 12px;
}

h1 {
  font-size: 42px;
  line-height: 1.15;
  letter-spacing: -0.02em;
  font-weight: 650;
  margin: 0 0 18px;
}

.lead { font-size: 18px; color: var(--muted); margin: 0 0 28px; }

.actions { display: flex; gap: 12px; flex-wrap: wrap; }

.btn {
  display: inline-block;
  padding: 10px 18px;
  border-radius: 8px;
  background: var(--accent);
  color: #fff;
  text-decoration: none;
  font-size: 15px;
  font-weight: 500;
  border: 1px solid var(--accent);
}

.btn.ghost { background: transparent; color: var(--accent); }
.btn:hover { opacity: 0.9; }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
  padding: 20px 0 48px;
}

.card {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 22px;
  background: var(--bg);
}

.card h2 { font-size: 17px; margin: 0 0 10px; letter-spacing: -0.01em; }
.card p { margin: 0; color: var(--muted); font-size: 15px; }

.panel {
  background: var(--soft);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 28px;
  margin-bottom: 64px;
}

.panel h2 { margin: 0 0 16px; font-size: 20px; letter-spacing: -0.01em; }

dl { margin: 0; }
dt { font-weight: 600; margin-top: 16px; font-size: 15px; }
dt:first-child { margin-top: 0; }
dd { margin: 4px 0 0; color: var(--muted); font-size: 15px; }

table { border-collapse: collapse; width: 100%; font-size: 15px; }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--line); }
th { font-size: 13px; text-transform: uppercase; letter-spacing: 0.05em; color: var(--muted); }

.ok { color: #1a7f45; font-weight: 600; }
.warn { color: #96650a; font-weight: 600; }

pre {
  background: var(--soft);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 16px;
  overflow-x: auto;
  font-size: 14px;
  line-height: 1.55;
}

code { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }

.footer {
  border-top: 1px solid var(--line);
  padding: 28px 0 48px;
  font-size: 14px;
  color: var(--muted);
}

.footer p { margin: 4px 0; }
.muted { color: var(--muted); }

@media (max-width: 640px) {
  h1 { font-size: 32px; }
  .hero { padding: 48px 0 28px; }
  nav a { margin-left: 14px; font-size: 14px; }
}