:root {
  --bg: #07140f;
  --bg-2: #0d2219;
  --ink: #e7f2ea;
  --muted: #9bb5a6;
  --accent: #7fd4a0;
  --accent-2: #f0b429;
  --line: rgba(231, 242, 234, 0.12);
  --card: rgba(13, 34, 25, 0.72);
  --font-display: "Fraunces", Georgia, serif;
  --font-body: "Source Sans 3", system-ui, sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  min-height: 100vh;
  color: var(--ink);
  font-family: var(--font-body);
  background:
    radial-gradient(900px 500px at 15% -10%, rgba(127, 212, 160, 0.18), transparent 55%),
    radial-gradient(700px 420px at 90% 10%, rgba(240, 180, 41, 0.12), transparent 50%),
    linear-gradient(165deg, var(--bg), var(--bg-2) 45%, #06110d);
  line-height: 1.55;
}

.glow {
  position: fixed;
  inset: auto -20% -30% auto;
  width: 55vw;
  height: 55vw;
  background: radial-gradient(circle, rgba(127, 212, 160, 0.12), transparent 65%);
  pointer-events: none;
  z-index: 0;
}

.shell {
  width: min(920px, calc(100% - 2.5rem));
  margin-inline: auto;
  position: relative;
  z-index: 1;
}

header.shell {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.4rem 0 0.5rem;
  gap: 1rem;
}

.brand {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.35rem;
  letter-spacing: -0.02em;
  color: var(--ink);
  text-decoration: none;
}

nav {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}
nav a {
  color: var(--muted);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
}
nav a:hover { color: var(--accent); }

.hero { padding: 3.5rem 0 4rem; }
.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.75rem;
  color: var(--accent-2);
  font-weight: 700;
  margin: 0 0 0.85rem;
}
h1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.1rem, 5vw, 3.4rem);
  letter-spacing: -0.03em;
  line-height: 1.12;
  margin: 0 0 1rem;
}
.lede {
  max-width: 38rem;
  color: var(--muted);
  font-size: 1.12rem;
  margin: 0 0 2.4rem;
}

.card-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
}
.card {
  display: block;
  text-decoration: none;
  color: inherit;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 1.25rem 1.3rem;
  backdrop-filter: blur(10px);
  transition: transform 180ms ease, border-color 180ms ease;
}
.card:hover {
  transform: translateY(-3px);
  border-color: rgba(127, 212, 160, 0.45);
}
.card h2 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  margin: 0 0 0.45rem;
}
.card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.98rem;
}

.doc {
  padding: 2.4rem 0 4rem;
}
.doc h1 {
  font-size: clamp(1.9rem, 4vw, 2.6rem);
  margin-bottom: 0.35rem;
}
.meta {
  color: var(--muted);
  margin: 0 0 2rem;
  font-size: 0.95rem;
}
.doc h2 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  margin: 2rem 0 0.55rem;
}
.doc p, .doc li {
  color: #d5e6db;
  max-width: 42rem;
}
.doc ul { padding-left: 1.2rem; }
.doc a { color: var(--accent); }

.foot {
  border-top: 1px solid var(--line);
  padding: 1.4rem 0 2.2rem;
  color: var(--muted);
  font-size: 0.9rem;
}
.foot p { margin: 0; }

@media (max-width: 640px) {
  header.shell { flex-direction: column; align-items: flex-start; }
}