:root {
  color-scheme: dark;
  --bg: #0c0f0d;
  --panel: #151916;
  --panel-soft: #1b211c;
  --text: #f6f8f3;
  --muted: #adb7ad;
  --accent: #a8ec20;
  --line: #303830;
  --max: 760px;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background:
    radial-gradient(circle at top right, rgba(168, 236, 32, 0.09), transparent 28rem),
    var(--bg);
  color: var(--text);
  line-height: 1.65;
}

a { color: var(--accent); }
a:hover { text-decoration-thickness: 2px; }

.shell { width: min(calc(100% - 2rem), var(--max)); margin: 0 auto; }

header {
  border-bottom: 1px solid var(--line);
  background: rgba(12, 15, 13, 0.88);
  backdrop-filter: blur(14px);
  position: sticky;
  top: 0;
  z-index: 2;
}

nav {
  min-height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand { color: var(--text); font-weight: 800; text-decoration: none; letter-spacing: -0.02em; }
.brand span { color: var(--accent); }
.nav-links { display: flex; flex-wrap: wrap; gap: 0.8rem; font-size: 0.9rem; }
.nav-links a { color: var(--muted); text-decoration: none; }
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--text); }

main { padding: 4.5rem 0 5rem; }
.eyebrow { color: var(--accent); font-size: 0.78rem; font-weight: 800; letter-spacing: 0.13em; text-transform: uppercase; }
h1 { font-size: clamp(2.35rem, 7vw, 4.4rem); line-height: 1.03; letter-spacing: -0.055em; margin: 0.45rem 0 1.25rem; }
h2 { font-size: 1.35rem; margin-top: 2.5rem; letter-spacing: -0.02em; }
p, li { color: #d9dfd8; }
.lede { color: var(--muted); font-size: 1.15rem; max-width: 62ch; }
.updated { color: var(--muted); font-size: 0.9rem; }

.card-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; margin-top: 2.5rem; }
.card {
  display: block;
  padding: 1.2rem;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: linear-gradient(145deg, var(--panel-soft), var(--panel));
  color: var(--text);
  text-decoration: none;
}
.card strong { display: block; margin-bottom: 0.25rem; }
.card span { color: var(--muted); font-size: 0.92rem; }
.card:hover { border-color: rgba(168, 236, 32, 0.55); transform: translateY(-1px); }

.notice { margin: 2rem 0; padding: 1rem 1.1rem; border-left: 3px solid var(--accent); background: var(--panel); border-radius: 0 12px 12px 0; }
code { color: #d6ff84; }

footer { border-top: 1px solid var(--line); padding: 2rem 0 3rem; color: var(--muted); font-size: 0.88rem; }

@media (max-width: 640px) {
  nav { align-items: flex-start; flex-direction: column; padding: 1rem 0; }
  .card-grid { grid-template-columns: 1fr; }
  main { padding-top: 3rem; }
}

@media (prefers-reduced-motion: no-preference) {
  .card { transition: border-color 150ms ease, transform 150ms ease; }
}