:root {
  --bg: #0b0b0e;
  --surface: #14141a;
  --raised: #1d1d25;
  --outline: #2a2a33;
  --text: #f5f5f7;
  --muted: #a9a9b4;
  --coral: #ff5a46;
  --magenta: #ff3fa4;
  --cyan: #22d3ee;
  --amber: #ffc53d;
  --max: 46rem;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "IBM Plex Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 17px;
  line-height: 1.65;
}

/* Header ------------------------------------------------------------- */

header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(11, 11, 14, 0.88);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--outline);
}

.bar {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0.85rem 1.25rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
  align-items: baseline;
  justify-content: space-between;
}

.wordmark {
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: -0.01em;
  color: var(--text);
  text-decoration: none;
}

nav { display: flex; gap: 1rem; font-size: 0.9rem; }

nav a { color: var(--muted); text-decoration: none; }
nav a:hover { color: var(--text); }
nav a[aria-current="page"] { color: var(--text); font-weight: 600; }

/* Layout ------------------------------------------------------------- */

main {
  max-width: var(--max);
  margin: 0 auto;
  padding: 2.75rem 1.25rem 4rem;
}

h1 {
  font-size: 2rem;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin: 0 0 0.4rem;
}

h2 {
  font-size: 1.25rem;
  line-height: 1.3;
  margin: 2.75rem 0 0.75rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--outline);
}

h3 { font-size: 1rem; margin: 1.5rem 0 0.4rem; }

p, li { color: #e6e6ea; }

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

.meta { color: var(--muted); font-size: 0.9rem; margin: 0 0 2rem; }

.lede { font-size: 1.05rem; }

ul { padding-left: 1.2rem; }
li { margin: 0.35rem 0; }

strong { color: var(--text); }

/* Callouts ----------------------------------------------------------- */

.summary {
  background: var(--surface);
  border: 1px solid var(--outline);
  border-radius: 14px;
  padding: 1.25rem 1.4rem;
  margin: 2rem 0;
}

.summary h2 {
  border: 0;
  padding: 0;
  margin: 0 0 0.6rem;
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.summary ul { margin: 0; }

.note {
  border-left: 3px solid var(--coral);
  background: rgba(255, 90, 70, 0.07);
  border-radius: 0 10px 10px 0;
  padding: 0.9rem 1.1rem;
  margin: 1.5rem 0;
}

/* Tables ------------------------------------------------------------- */

.scroll { overflow-x: auto; margin: 1.25rem 0; }

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
  min-width: 34rem;
}

th, td {
  text-align: left;
  vertical-align: top;
  padding: 0.7rem 0.8rem;
  border-bottom: 1px solid var(--outline);
}

th {
  color: var(--muted);
  font-weight: 600;
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

tbody tr:nth-child(odd) { background: rgba(255, 255, 255, 0.02); }

/* Landing page ------------------------------------------------------- */

.hero { text-align: center; padding: 3rem 0 1rem; }

.hero h1 { font-size: 2.4rem; }

.hero .accent {
  background: linear-gradient(90deg, var(--magenta), var(--amber), var(--cyan));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.cards { display: flex; flex-wrap: wrap; gap: 1rem; justify-content: center; margin-top: 2.5rem; }

.card {
  flex: 1 1 15rem;
  max-width: 20rem;
  text-align: left;
  display: block;
  padding: 1.25rem 1.4rem;
  border-radius: 16px;
  border: 1px solid var(--outline);
  background: var(--surface);
  color: var(--text);
  text-decoration: none;
}

.card:hover { border-color: var(--magenta); }

.card b { display: block; font-size: 1.05rem; margin-bottom: 0.25rem; }
.card span { color: var(--muted); font-size: 0.92rem; }

/* Footer ------------------------------------------------------------- */

footer {
  border-top: 1px solid var(--outline);
  margin-top: 3.5rem;
  padding: 1.75rem 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}

@media (max-width: 30rem) {
  body { font-size: 16px; }
  h1 { font-size: 1.7rem; }
  .hero h1 { font-size: 2rem; }
}

@media print {
  body { background: #fff; color: #000; }
  header { display: none; }
  p, li, strong { color: #000; }
  a { color: #000; }
}