:root {
  color-scheme: dark;
  --background: #08090b;
  --surface: #111318;
  --surface-raised: #191c22;
  --text: #f7f4ee;
  --muted: #aaa8a2;
  --accent: #d6ff63;
  --border: #2c3038;
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "SF Pro Display", sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 85% 0%, rgb(214 255 99 / 12%), transparent 32rem),
    var(--background);
  color: var(--text);
  line-height: 1.6;
}

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

.shell {
  width: min(760px, calc(100% - 40px));
  margin: 0 auto;
  padding: 28px 0 72px;
}

nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 72px;
}

.brand {
  color: var(--text);
  font-size: 1.1rem;
  font-weight: 800;
  letter-spacing: .18em;
  text-decoration: none;
}

select {
  appearance: none;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 9px 34px 9px 14px;
  background: var(--surface) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='m1 1 5 5 5-5' fill='none' stroke='%23aaa8a2' stroke-width='2'/%3E%3C/svg%3E") no-repeat right 12px center;
  color: var(--text);
  font: inherit;
}

.eyebrow {
  color: var(--accent);
  font-size: .78rem;
  font-weight: 750;
  letter-spacing: .14em;
  text-transform: uppercase;
}

h1 {
  max-width: 720px;
  margin: 12px 0 20px;
  font-size: clamp(2.5rem, 7vw, 5.25rem);
  line-height: .98;
  letter-spacing: -.055em;
}

h2 { margin-top: 42px; line-height: 1.2; }

.lede {
  max-width: 650px;
  color: var(--muted);
  font-size: clamp(1.08rem, 2.2vw, 1.28rem);
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 16px;
  margin-top: 42px;
}

.card {
  display: block;
  border: 1px solid var(--border);
  border-radius: 22px;
  padding: 24px;
  background: linear-gradient(145deg, var(--surface-raised), var(--surface));
  color: var(--text);
  text-decoration: none;
}

.card strong { display: block; margin-bottom: 6px; font-size: 1.15rem; }
.card span, p, li { color: var(--muted); }
.card:hover { border-color: var(--accent); transform: translateY(-1px); }

.notice {
  margin: 32px 0;
  border-left: 3px solid var(--accent);
  padding: 14px 18px;
  background: rgb(214 255 99 / 7%);
}

footer {
  margin-top: 72px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: .9rem;
}

footer a { margin-right: 18px; }

@media (max-width: 520px) {
  .shell { width: min(100% - 28px, 760px); padding-top: 20px; }
  nav { margin-bottom: 52px; }
}