:root {
  --bg: #0b1020;
  --bg-elevated: #111832;
  --border: #232c4d;
  --text: #e7ecf7;
  --text-muted: #9aa5c7;
  --accent-cyan: #22d3ee;
  --accent-indigo: #6366f1;
  --high: #f87171;
  --medium: #fbbf24;
  --low: #60a5fa;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f7f8fc;
    --bg-elevated: #ffffff;
    --border: #e2e6f2;
    --text: #131a30;
    --text-muted: #565f80;
  }
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  line-height: 1.6;
  scroll-behavior: smooth;
}

.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 24px;
}

nav {
  position: sticky;
  top: 0;
  z-index: 10;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  max-width: 960px;
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--mono);
  font-weight: 700;
  font-size: 15px;
}

.nav-logo img { width: 22px; height: 22px; }

.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 14px;
  margin-left: 22px;
}

.nav-links a:hover { color: var(--text); }

section { padding: 72px 0; }

#hero { padding-top: 96px; padding-bottom: 56px; }

.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--accent-cyan);
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  padding: 6px 12px;
  border-radius: 999px;
  margin-bottom: 22px;
}

h1 {
  font-size: clamp(28px, 4.4vw, 44px);
  line-height: 1.18;
  margin: 0 0 20px;
  letter-spacing: -0.01em;
}

h1 .grad {
  background: linear-gradient(120deg, var(--accent-cyan), var(--accent-indigo));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.subtitle {
  font-size: 18px;
  color: var(--text-muted);
  max-width: 62ch;
  margin: 0 0 32px;
}

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

.btn {
  display: inline-block;
  padding: 11px 20px;
  border-radius: 10px;
  font-size: 14.5px;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid transparent;
}

.btn-primary {
  background: linear-gradient(120deg, var(--accent-cyan), var(--accent-indigo));
  color: #07101f;
}

.btn-ghost {
  color: var(--text);
  border-color: var(--border);
  background: var(--bg-elevated);
}

h2 {
  font-size: 26px;
  margin: 0 0 28px;
}

.gap-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
}

.card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 22px;
}

.card h3 {
  margin: 0 0 10px;
  font-size: 16px;
}

.card p { margin: 0; color: var(--text-muted); font-size: 14.5px; }

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
}

th, td {
  text-align: left;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
}

th { color: var(--text-muted); font-weight: 600; font-size: 12.5px; text-transform: uppercase; letter-spacing: 0.03em; }

tr:last-child td { border-bottom: none; }

.sev {
  display: inline-block;
  font-family: var(--mono);
  font-size: 11.5px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 6px;
}

.sev-high { background: color-mix(in srgb, var(--high) 18%, transparent); color: var(--high); }
.sev-medium { background: color-mix(in srgb, var(--medium) 18%, transparent); color: var(--medium); }
.sev-low { background: color-mix(in srgb, var(--low) 18%, transparent); color: var(--low); }

pre {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
  overflow-x: auto;
  font-family: var(--mono);
  font-size: 13.5px;
  line-height: 1.55;
}

code { font-family: var(--mono); }

.tabs { display: flex; gap: 8px; margin-bottom: 14px; flex-wrap: wrap; }

.tab-btn {
  font-family: var(--mono);
  font-size: 12.5px;
  padding: 7px 12px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  color: var(--text-muted);
  cursor: pointer;
}

.tab-btn.active {
  color: var(--text);
  border-color: var(--accent-cyan);
}

.tab-panel { display: none; }
.tab-panel.active { display: block; }

footer {
  border-top: 1px solid var(--border);
  padding: 40px 0 60px;
  color: var(--text-muted);
  font-size: 13.5px;
}

footer a { color: var(--accent-cyan); text-decoration: none; }

.author-line { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }