:root {
  color-scheme: dark;
  --bg: #05080d;
  --panel: rgba(14, 22, 34, 0.92);
  --panel-soft: rgba(255, 255, 255, 0.03);
  --border: rgba(255, 255, 255, 0.09);
  --text: #f5f7fb;
  --text-muted: #a9b4c6;
  --accent: #00d4aa;
  --accent-soft: rgba(0, 212, 170, 0.12);
  --warn: #f5c43d;
  --warn-soft: rgba(245, 196, 61, 0.1);
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  min-height: 100%;
  background:
    radial-gradient(circle at top, rgba(0, 212, 170, 0.08), transparent 32%),
    linear-gradient(180deg, #071019 0%, var(--bg) 32%);
  color: var(--text);
  font-family: "Outfit", system-ui, sans-serif;
}

body {
  line-height: 1.65;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.shell {
  max-width: 1024px;
  margin: 0 auto;
  padding: 0 24px 56px;
}

.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 28px 0 20px;
}

.brand {
  color: var(--text);
  text-decoration: none;
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.03em;
}

.brand-accent {
  color: var(--accent);
}

.nav {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.nav a {
  color: var(--text-muted);
}

.nav a.primary {
  color: var(--text);
}

.card {
  border: 1px solid var(--border);
  background: var(--panel);
  border-radius: 28px;
  padding: 32px;
  box-shadow: 0 18px 60px rgba(0, 0, 0, 0.28);
}

.eyebrow {
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

h1 {
  margin: 10px 0 8px;
  font-size: clamp(2rem, 6vw, 3rem);
  line-height: 1.06;
  letter-spacing: -0.035em;
}

.updated {
  margin: 0 0 22px;
  color: var(--text-muted);
  font-size: 0.95rem;
}

.intro {
  color: var(--text);
  font-size: 1.04rem;
  margin: 0 0 28px;
}

h2 {
  margin: 30px 0 12px;
  font-size: 1.28rem;
  letter-spacing: -0.02em;
}

h3 {
  margin: 22px 0 10px;
  font-size: 1.04rem;
}

p, ul {
  margin: 0 0 14px;
  color: var(--text-muted);
}

ul {
  padding-left: 20px;
}

li + li {
  margin-top: 7px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin: 0 0 28px;
}

.tile {
  border: 1px solid var(--border);
  background: var(--panel-soft);
  border-radius: 18px;
  padding: 18px 18px 16px;
}

.tile h2 {
  margin-top: 0;
}

.note {
  margin: 18px 0;
  padding: 14px 16px;
  border-radius: 16px;
  border: 1px solid rgba(245, 196, 61, 0.2);
  background: var(--warn-soft);
  color: var(--text);
}

.footer {
  margin-top: 24px;
  padding: 24px 0 0;
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.92rem;
}

.footer-links {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 8px;
}

@media (max-width: 720px) {
  .shell {
    padding: 0 16px 40px;
  }

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

  .nav {
    justify-content: flex-start;
  }

  .card {
    padding: 24px 18px;
    border-radius: 22px;
  }

  .grid {
    grid-template-columns: 1fr;
  }
}