:root {
  --bg: #0e1016;
  --bg-soft: #151823;
  --card: #1a1e2b;
  --border: #262b3d;
  --text: #e6e8f0;
  --muted: #9aa1b8;
  --accent: #7b84ff;
  --accent-soft: rgba(123, 132, 255, 0.12);
  --radius: 14px;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background:
    radial-gradient(900px 500px at 15% -10%, rgba(123, 132, 255, 0.14), transparent 60%),
    radial-gradient(700px 400px at 100% 0%, rgba(90, 200, 250, 0.08), transparent 55%),
    var(--bg);
  color: var(--text);
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.wrap {
  width: 100%;
  max-width: 800px;
  margin: 0 auto;
  padding: 0 22px;
}

/* ---------- header ---------- */
header.site {
  border-bottom: 1px solid var(--border);
  background: rgba(14, 16, 22, 0.72);
  backdrop-filter: blur(10px);
  position: sticky;
  top: 0;
  z-index: 10;
}

header.site .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 62px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 650;
  letter-spacing: -0.01em;
  color: var(--text);
  text-decoration: none;
  font-size: 0.98rem;
}

.brand .dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-soft);
  flex: none;
}

nav.site {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

nav.site a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.88rem;
  padding: 6px 11px;
  border-radius: 9px;
  transition: color .15s ease, background .15s ease;
}

nav.site a:hover,
nav.site a[aria-current="page"] {
  color: var(--text);
  background: var(--accent-soft);
}

/* ---------- main ---------- */
main {
  flex: 1;
  padding: 46px 0 64px;
}

h1 {
  font-size: clamp(1.65rem, 4vw, 2.15rem);
  line-height: 1.25;
  letter-spacing: -0.02em;
  margin: 0 0 10px;
  font-weight: 700;
}

h2 {
  font-size: 1.16rem;
  letter-spacing: -0.01em;
  margin: 38px 0 10px;
  font-weight: 650;
}

h3 {
  font-size: 1rem;
  margin: 24px 0 6px;
  font-weight: 620;
  color: #cdd2e6;
}

p, li { color: #cbd0e2; }

p { margin: 0 0 14px; }

ul, ol { margin: 0 0 16px; padding-left: 22px; }

li { margin: 5px 0; }

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

strong { color: var(--text); font-weight: 620; }

.lead {
  color: var(--muted);
  font-size: 1.02rem;
  margin: 0 0 8px;
}

.meta {
  color: var(--muted);
  font-size: 0.84rem;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  margin: 18px 0 30px;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--border);
}

.meta span { display: inline-flex; align-items: center; gap: 7px; }

.pill {
  display: inline-block;
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-soft);
  border: 1px solid rgba(123, 132, 255, 0.28);
  padding: 3px 9px;
  border-radius: 999px;
  margin-bottom: 16px;
}

/* ---------- cards (index) ---------- */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  margin-top: 28px;
}

.card {
  display: block;
  background: linear-gradient(180deg, var(--card), var(--bg-soft));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  text-decoration: none;
  color: var(--text);
  transition: border-color .18s ease, transform .18s ease;
}

.card:hover {
  border-color: rgba(123, 132, 255, 0.5);
  transform: translateY(-2px);
  text-decoration: none;
}

.card .kicker {
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--muted);
}

.card h2 {
  margin: 8px 0 6px;
  font-size: 1.08rem;
}

.card p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--muted);
}

.card .arrow {
  display: inline-block;
  margin-top: 14px;
  font-size: 0.86rem;
  color: var(--accent);
}

/* ---------- tables ---------- */
.table-scroll { overflow-x: auto; margin: 0 0 18px; }

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  min-width: 420px;
}

th, td {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}

th {
  color: var(--muted);
  font-weight: 600;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

/* ---------- callout ---------- */
.callout {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 14px 18px;
  margin: 0 0 20px;
  font-size: 0.92rem;
}

.callout p:last-child { margin-bottom: 0; }

/* ---------- footer ---------- */
footer.site {
  border-top: 1px solid var(--border);
  padding: 22px 0 30px;
  color: var(--muted);
  font-size: 0.83rem;
}

footer.site .wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 20px;
  justify-content: space-between;
  align-items: center;
}

footer.site a { color: var(--muted); }
footer.site a:hover { color: var(--text); }

.back {
  display: inline-block;
  margin-top: 34px;
  font-size: 0.88rem;
}

@media (max-width: 520px) {
  main { padding: 32px 0 48px; }
  header.site .wrap { min-height: 56px; }
  nav.site a { padding: 6px 8px; font-size: 0.83rem; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}