:root {
  --shadow-aura: 0 18px 50px -20px rgba(0,0,0,.55);
}

body {
  background:
    radial-gradient(at 20% 30%, color-mix(in srgb, var(--accent) 70%, transparent) 0, transparent 50%),
    radial-gradient(at 80% 20%, color-mix(in srgb, var(--accent-2) 70%, transparent) 0, transparent 50%),
    radial-gradient(at 50% 80%, color-mix(in srgb, var(--accent) 45%, var(--accent-2)) 0, transparent 50%),
    var(--bg);
  background-attachment: fixed;
}

/* subtle grain overlay */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  opacity: .06;
  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='0.85' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

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

/* drifting mesh inside hero */
.hero {
  background:
    radial-gradient(at 25% 25%, color-mix(in srgb, var(--accent) 55%, transparent) 0, transparent 55%),
    radial-gradient(at 75% 35%, color-mix(in srgb, var(--accent-2) 55%, transparent) 0, transparent 55%),
    radial-gradient(at 50% 90%, color-mix(in srgb, var(--accent) 40%, var(--accent-2)) 0, transparent 55%),
    var(--panel);
  border: 1px solid var(--line);
  border-radius: calc(var(--radius) * 1.4);
  background-size: 160% 160%;
  animation: meshDrift 22s ease-in-out infinite alternate;
}

@keyframes meshDrift {
  0%   { background-position: 0% 0%, 100% 0%, 50% 100%, 0 0; }
  100% { background-position: 30% 20%, 70% 30%, 40% 70%, 0 0; }
}

.hero-title {
  font-weight: 800;
  letter-spacing: -0.01em;
  background: linear-gradient(100deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

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

.fact {
  background: var(--panel-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}
.fact b { color: var(--accent-2); }

/* panels */
.card, .feature, .faq-item, .article {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: calc(var(--radius) * 1.1);
  background-size: 200% 200%;
  transition: transform .3s ease, border-color .3s ease, box-shadow .3s ease;
}

.card:hover, .feature:hover {
  transform: translateY(-4px);
  border-color: color-mix(in srgb, var(--accent) 50%, var(--line));
  box-shadow: var(--shadow-aura), 0 0 0 1px color-mix(in srgb, var(--accent-2) 35%, transparent);
}

.feature .icon {
  color: var(--on-accent);
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  border-radius: calc(var(--radius) * .8);
  box-shadow: 0 8px 24px -10px color-mix(in srgb, var(--accent) 70%, transparent);
}

.card h3, .feature h3, .article h2 {
  font-weight: 700;
  letter-spacing: .01em;
}

/* buttons */
.btn-primary {
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  color: var(--on-accent);
  border: none;
  box-shadow: 0 10px 30px -12px color-mix(in srgb, var(--accent) 80%, transparent);
  transition: transform .2s ease, box-shadow .3s ease, filter .2s ease;
}
.btn-primary:hover {
  transform: translateY(-2px);
  filter: brightness(1.06);
  box-shadow: 0 16px 40px -12px color-mix(in srgb, var(--accent-2) 75%, transparent);
}

.btn-ghost {
  background: var(--panel-2);
  border: 1px solid var(--line);
  color: var(--text);
  transition: border-color .25s ease, color .25s ease, background .25s ease;
}
.btn-ghost:hover {
  border-color: var(--accent-2);
  color: var(--accent-2);
}

.badge {
  background: color-mix(in srgb, var(--accent) 16%, var(--panel));
  border: 1px solid color-mix(in srgb, var(--accent-2) 40%, var(--line));
  color: var(--text);
  border-radius: 999px;
}

/* tabs */
.tab {
  background: var(--panel-2);
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--text-2);
  transition: all .25s ease;
}
.tab:hover { color: var(--text); border-color: var(--accent-2); }
.tab.active {
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  color: var(--on-accent);
  border-color: transparent;
}

/* tiles */
.tile {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: calc(var(--radius) * 1.1);
  overflow: hidden;
  transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease;
}
.tile:hover {
  transform: translateY(-4px) scale(1.01);
  border-color: color-mix(in srgb, var(--accent) 55%, var(--line));
  box-shadow: var(--shadow-aura);
}
.tile.noimg {
  background:
    radial-gradient(at 30% 20%, color-mix(in srgb, var(--accent) 40%, transparent) 0, transparent 60%),
    radial-gradient(at 80% 90%, color-mix(in srgb, var(--accent-2) 40%, transparent) 0, transparent 60%),
    var(--panel-2);
}
.tile .nm { color: var(--text); font-weight: 700; }
.tile .gp { color: var(--accent-2); }

/* faq */
.faq-item { transition: border-color .25s ease; }
.faq-item:hover { border-color: color-mix(in srgb, var(--accent-2) 45%, var(--line)); }
.faq-q { color: var(--text); font-weight: 650; }
.faq-a { color: var(--prose); }

/* table */
.table { border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.table th {
  background: color-mix(in srgb, var(--accent) 14%, var(--panel-2));
  color: var(--text);
}
.table tr:hover td { background: color-mix(in srgb, var(--accent-2) 8%, transparent); }

.site-header { border-bottom: 1px solid var(--line); }

a { transition: color .2s ease; }
.article a { color: var(--accent-2); }
.article a:hover { color: var(--accent); }