* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: 'Inter', -apple-system, sans-serif;
  background: radial-gradient(circle at top right, #101a32, #050811 60%);
  color: #e8ecff;
  line-height: 1.7;
}
.container {
  width: min(900px, 92%);
  margin: 0 auto;
}
.header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(12px);
  background: rgba(5, 8, 17, 0.75);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 0;
}
.brand {
  text-decoration: none;
  color: #f0f4ff;
  font-weight: 700;
  font-size: 1.05rem;
}
.back-link {
  text-decoration: none;
  color: #a9b3d1;
  font-size: 0.9rem;
}
.back-link:hover { color: #dce4ff; }
.main { padding: 42px 0 70px; }
.card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 16px;
  padding: 30px;
  box-shadow: 0 10px 35px rgba(0, 0, 0, 0.35);
}
h1 {
  margin: 0 0 6px;
  font-size: clamp(1.8rem, 3vw, 2.4rem);
}
.updated {
  margin: 0 0 24px;
  color: #8f9abb;
  font-size: 0.9rem;
}
h2 {
  margin: 26px 0 10px;
  font-size: 1.15rem;
}
p, li { color: #c9d2ef; }
ul { margin: 8px 0 0 20px; }
a { color: #8bc3ff; }
.footer {
  margin-top: 28px;
  color: #8f9abb;
  font-size: 0.85rem;
}