body {
  background:
    radial-gradient(at 20% 30%, color-mix(in srgb, var(--accent) 55%, transparent) 0, transparent 50%),
    radial-gradient(at 80% 20%, color-mix(in srgb, var(--accent-2) 55%, transparent) 0, transparent 50%),
    radial-gradient(at 50% 80%, color-mix(in srgb, var(--accent) 40%, var(--accent-2)) 0, transparent 50%),
    var(--bg);
  background-attachment: fixed;
  position: relative;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  opacity: 0.05;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  mix-blend-mode: overlay;
}

.section, .hero {
  position: relative;
  z-index: 1;
}

.hero {
  background:
    radial-gradient(at 15% 25%, color-mix(in srgb, var(--accent) 35%, transparent) 0, transparent 55%),
    radial-gradient(at 85% 15%, color-mix(in srgb, var(--accent-2) 35%, transparent) 0, transparent 55%);
  background-size: 180% 180%;
  background-position: 0% 0%;
  animation: auroraDrift 26s ease-in-out infinite alternate;
  border-radius: var(--radius);
}

@keyframes auroraDrift {
  0% { background-position: 0% 0%; }
  100% { background-position: 100% 100%; }
}

.hero-title {
  font-weight: 800;
  letter-spacing: -0.02em;
  background: linear-gradient(100deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-sub { color: var(--text-2); }

.site-header {
  background: color-mix(in srgb, var(--panel) 75%, transparent);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}

.fact {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}
.fact b {
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.card, .feature {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background-size: 160% 160%;
  background-position: 0% 0%;
  transition: transform .35s ease, box-shadow .35s ease, border-color .35s ease, background-position 1.2s ease;
}
.card:hover, .feature:hover {
  transform: translateY(-5px);
  border-color: color-mix(in srgb, var(--accent) 50%, var(--line));
  box-shadow: 0 14px 40px color-mix(in srgb, var(--accent) 22%, transparent);
  background-position: 100% 100%;
}

.feature .icon {
  color: var(--on-accent);
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  border-radius: 14px;
  box-shadow: 0 8px 24px color-mix(in srgb, var(--accent-2) 30%, transparent);
}

.btn {
  border-radius: 999px;
  border: 1px solid var(--line);
  transition: transform .25s ease, box-shadow .25s ease, filter .25s ease;
}
.btn-primary {
  background: linear-gradient(100deg, var(--accent), var(--accent-2));
  color: var(--on-accent);
  border: none;
  box-shadow: 0 8px 26px color-mix(in srgb, var(--accent) 35%, transparent);
}
.btn-primary:hover { transform: translateY(-2px); filter: brightness(1.08); }
.btn-ghost:hover {
  border-color: var(--accent-2);
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--accent-2) 50%, transparent);
}

.badge {
  background: color-mix(in srgb, var(--accent) 16%, var(--panel));
  border: 1px solid color-mix(in srgb, var(--accent) 40%, var(--line));
  color: var(--text);
  border-radius: 999px;
}

.tab {
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--panel);
  transition: all .25s ease;
}
.tab.active, .tab:hover {
  background: linear-gradient(100deg, var(--accent), var(--accent-2));
  color: var(--on-accent);
  border-color: transparent;
}

.tile {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--panel-2);
  transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease;
}
.tile:hover {
  transform: translateY(-4px);
  border-color: var(--accent-2);
  box-shadow: 0 12px 34px color-mix(in srgb, var(--accent) 25%, transparent);
}
.tile.noimg {
  background:
    radial-gradient(at 30% 25%, color-mix(in srgb, var(--accent) 45%, transparent) 0, transparent 60%),
    radial-gradient(at 75% 80%, color-mix(in srgb, var(--accent-2) 45%, transparent) 0, transparent 60%),
    var(--panel-2);
}
.tile .gp { color: var(--text-2); }
.tile .nm { color: var(--text); font-weight: 700; }

.article h2 {
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text);
}
.article h2::after {
  content: "";
  display: block;
  width: 64px;
  height: 3px;
  margin-top: .4rem;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
}

.table { border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line); }
.table th { background: color-mix(in srgb, var(--accent) 14%, var(--panel)); color: var(--text); }

.faq-item {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: border-color .25s ease, box-shadow .25s ease;
}
.faq-item:hover {
  border-color: color-mix(in srgb, var(--accent-2) 50%, var(--line));
  box-shadow: 0 8px 24px color-mix(in srgb, var(--accent-2) 18%, transparent);
}
.faq-q { color: var(--text); font-weight: 600; }
.faq-a { color: var(--prose); }

.site-footer {
  border-top: 1px solid var(--line);
  background: color-mix(in srgb, var(--panel) 60%, transparent);
}

::selection {
  background: color-mix(in srgb, var(--accent) 45%, transparent);
  color: var(--on-accent);
}