:root {
  color-scheme: dark;
  --bg: #0b1020;
  --bg-elevated: rgba(16, 24, 48, 0.88);
  --panel: rgba(22, 33, 66, 0.86);
  --panel-strong: rgba(28, 42, 84, 0.96);
  --border: rgba(148, 163, 184, 0.18);
  --text: #e5ecff;
  --muted: #a9b6d3;
  --accent: #7dd3fc;
  --accent-strong: #38bdf8;
  --accent-soft: rgba(56, 189, 248, 0.14);
  --success: #86efac;
  --warning: #fcd34d;
  --shadow: 0 24px 60px rgba(2, 8, 23, 0.45);
  --radius: 18px;
  --radius-sm: 12px;
  --max-width: 1120px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Inter", "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at top, rgba(56, 189, 248, 0.16), transparent 36%),
    linear-gradient(180deg, #08101f 0%, #0b1020 42%, #0f172a 100%);
  color: var(--text);
  line-height: 1.6;
}

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

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

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

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(14px);
  background: rgba(8, 16, 31, 0.72);
  border-bottom: 1px solid var(--border);
}

.topbar .shell {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 0;
}

.brand {
  font-size: 0.95rem;
  font-weight: 700;
  text-decoration: none;
  letter-spacing: 0.02em;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.nav a {
  text-decoration: none;
  color: var(--muted);
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(148, 163, 184, 0.08);
}

.nav a.active,
.nav a:hover {
  color: var(--text);
  background: rgba(125, 211, 252, 0.14);
}

.hero {
  padding: 64px 0 28px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

h1,
h2,
h3 {
  margin: 0 0 16px;
  line-height: 1.15;
}

h1 {
  font-size: clamp(2.4rem, 5vw, 4.4rem);
  max-width: 12ch;
  margin-top: 18px;
}

h2 {
  font-size: clamp(1.45rem, 2.8vw, 2.1rem);
}

h3 {
  font-size: 1.05rem;
}

.lead {
  max-width: 70ch;
  color: var(--muted);
  font-size: 1.08rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 18px;
  border-radius: 999px;
  border: 1px solid transparent;
  text-decoration: none;
  font-weight: 700;
}

.button.primary {
  background: linear-gradient(135deg, #38bdf8 0%, #0ea5e9 100%);
  color: #04111d;
}

.button.secondary {
  background: rgba(148, 163, 184, 0.1);
  border-color: var(--border);
  color: var(--text);
}

main {
  padding-bottom: 72px;
}

.grid {
  display: grid;
  gap: 20px;
}

.grid.two {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.card,
.table-wrap,
.callout {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.card {
  padding: 24px;
}

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

.section {
  margin-top: 26px;
}

.callout {
  padding: 18px 20px;
  background: linear-gradient(180deg, rgba(22, 33, 66, 0.96), rgba(12, 19, 37, 0.92));
}

.callout strong {
  color: var(--success);
}

ol,
ul {
  margin: 0;
  padding-left: 20px;
}

li + li {
  margin-top: 10px;
}

.meta-list {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.meta-list .card {
  padding: 18px;
}

.meta-label {
  display: block;
  margin-bottom: 8px;
  color: var(--muted);
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

table {
  width: 100%;
  border-collapse: collapse;
}

th,
td {
  padding: 14px 16px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--border);
}

th {
  color: var(--muted);
  font-size: 0.84rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

tbody tr:hover {
  background: rgba(125, 211, 252, 0.05);
}

.table-wrap {
  overflow-x: auto;
}

.tag {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 0 10px;
  border-radius: 999px;
  background: rgba(134, 239, 172, 0.12);
  color: var(--success);
  font-size: 0.82rem;
  font-weight: 700;
}

.tag.warning {
  background: rgba(252, 211, 77, 0.14);
  color: var(--warning);
}

footer {
  padding: 30px 0 56px;
  color: var(--muted);
}

@media (max-width: 860px) {
  .grid.two,
  .meta-list {
    grid-template-columns: 1fr;
  }

  .topbar .shell {
    flex-direction: column;
    align-items: flex-start;
  }

  h1 {
    max-width: none;
  }
}