:root {
  --bg: #0b0d12;
  --bg-glow: radial-gradient(circle at 20% -10%, rgba(109, 140, 255, 0.18), transparent 45%),
             radial-gradient(circle at 100% 0%, rgba(159, 92, 255, 0.12), transparent 40%);
  --surface: #12151d;
  --surface-hover: #161a24;
  --text: #eef0f4;
  --muted: #8b93a3;
  --accent: #6d8cff;
  --accent-2: #9f5cff;
  --border: #232838;
  --border-hover: #323a52;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background-color: var(--bg);
  background-image: var(--bg-glow);
  background-attachment: fixed;
  color: var(--text);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(11, 13, 18, 0.72);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.nav {
  max-width: 960px;
  margin: 0 auto;
  padding: 18px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

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

.brand span {
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.nav-links {
  display: flex;
  gap: 4px;
}

.nav-links a {
  color: var(--muted);
  text-decoration: none;
  padding: 8px 14px;
  border-radius: 8px;
  font-size: 0.92rem;
  transition: color 0.15s ease, background-color 0.15s ease;
}

.nav-links a:hover {
  color: var(--text);
  background: var(--surface-hover);
}

main {
  max-width: 780px;
  margin: 0 auto;
  padding: 72px 24px 96px;
}

h1 {
  font-size: 2.75rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  margin: 0 0 16px;
  background: linear-gradient(180deg, #ffffff, #c6cbe0);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

h2 {
  font-size: 1.15rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin: 0 0 12px;
  color: var(--text);
}

p.lede {
  color: var(--muted);
  font-size: 1.15rem;
  max-width: 560px;
  margin-bottom: 8px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 28px;
  margin-top: 20px;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

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

.card p {
  color: var(--muted);
  margin: 0;
}

.card p + p {
  margin-top: 12px;
}

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

a:hover {
  color: var(--accent-2);
}

.updated {
  color: var(--muted);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-top: -8px;
}

footer {
  border-top: 1px solid var(--border);
  padding: 32px 24px;
  text-align: center;
  color: var(--muted);
  font-size: 0.85rem;
}