:root {
  color-scheme: dark;
  --bg: #070709;
  --panel: #141419;
  --panel-strong: #1b1b21;
  --text: #f6f6f7;
  --muted: #a8a8b0;
  --line: #2b2b33;
  --green: #28d466;
  --purple: #8b5cf6;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.65;
}

a { color: #61aefc; }

.shell {
  width: min(900px, calc(100% - 32px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid var(--line);
  background: rgba(7, 7, 9, 0.94);
  backdrop-filter: blur(14px);
}

.site-header .shell {
  min-height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.brand {
  color: var(--text);
  font-size: 18px;
  font-weight: 800;
  text-decoration: none;
}

.nav {
  display: flex;
  align-items: center;
  gap: 16px;
}

.nav a {
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
}

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

main { padding: 64px 0 88px; }

.eyebrow {
  margin: 0 0 10px;
  color: var(--green);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1 {
  max-width: 760px;
  margin: 0;
  font-size: clamp(34px, 7vw, 58px);
  line-height: 1.08;
  letter-spacing: 0;
}

.lede {
  max-width: 760px;
  margin: 20px 0 0;
  color: var(--muted);
  font-size: 18px;
}

.effective {
  display: inline-flex;
  margin-top: 24px;
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  color: var(--muted);
  font-size: 14px;
}

.notice {
  margin: 34px 0;
  padding: 18px 20px;
  border: 1px solid rgba(40, 212, 102, 0.45);
  border-radius: 8px;
  background: rgba(40, 212, 102, 0.08);
}

.notice strong { color: var(--green); }

.toc {
  margin: 36px 0;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
}

.toc strong { display: block; margin-bottom: 10px; }
.toc ol { margin: 0; padding-left: 22px; columns: 2; }
.toc a { color: var(--muted); text-decoration: none; }
.toc a:hover { color: var(--text); }

section {
  padding: 30px 0;
  border-top: 1px solid var(--line);
}

h2 {
  margin: 0 0 14px;
  font-size: 25px;
  line-height: 1.25;
  letter-spacing: 0;
}

h3 {
  margin: 24px 0 8px;
  font-size: 18px;
  letter-spacing: 0;
}

p { margin: 10px 0; }
ul { margin: 12px 0; padding-left: 24px; }
li + li { margin-top: 8px; }

.data-table {
  width: 100%;
  margin-top: 18px;
  border-collapse: collapse;
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
}

.data-table th,
.data-table td {
  padding: 14px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.data-table th {
  background: var(--panel-strong);
  font-size: 14px;
}

.data-table td {
  background: var(--panel);
  color: var(--muted);
}

.data-table tr:last-child td { border-bottom: 0; }

.contact-card {
  padding: 22px;
  border: 1px solid rgba(139, 92, 246, 0.5);
  border-radius: 8px;
  background: rgba(139, 92, 246, 0.09);
}

footer {
  padding: 28px 0 44px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 14px;
}

footer .shell {
  display: flex;
  justify-content: space-between;
  gap: 20px;
}

footer nav { display: flex; gap: 16px; }
footer a { color: var(--muted); }

@media (max-width: 680px) {
  .site-header .shell { min-height: 60px; }
  .nav { gap: 10px; }
  .nav a { font-size: 13px; }
  main { padding: 44px 0 64px; }
  .toc ol { columns: 1; }
  .data-table,
  .data-table tbody,
  .data-table tr,
  .data-table th,
  .data-table td { display: block; }
  .data-table thead { display: none; }
  .data-table tr + tr { border-top: 1px solid var(--line); }
  .data-table td { border: 0; }
  .data-table td:first-child { color: var(--text); font-weight: 800; padding-bottom: 0; }
  footer .shell { flex-direction: column; }
}