:root {
  color-scheme: dark;
  --bg: #050816;
  --panel: rgba(15,23,42,0.8);
  --panel-soft: rgba(30,41,59,0.58);
  --line: rgba(99,102,241,0.18);
  --line-soft: rgba(71,85,105,0.22);
  --text: #e2e8f0;
  --muted: #94a3b8;
  --accent: #818cf8;
  --accent-2: #8b5cf6;
}

* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background:
    radial-gradient(circle at top, rgba(99,102,241,0.22), transparent 30%),
    radial-gradient(circle at bottom right, rgba(139,92,246,0.12), transparent 28%),
    linear-gradient(180deg, #090d1a 0%, #050816 72%);
  color: var(--text);
  line-height: 1.7;
}
a { color: #a5b4fc; text-decoration: none; }
a:hover { color: #d8b4fe; }

.page-shell {
  max-width: 1120px;
  margin: 0 auto;
  padding: 24px 20px 64px;
}
.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: rgba(5,11,24,0.78);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  margin-bottom: 24px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  letter-spacing: -0.02em;
}
.brand img { width: 38px; height: 38px; border-radius: 10px; }
.brand span { font-size: 1.05rem; }
.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.nav-links a {
  color: var(--muted);
  background: rgba(15,23,42,0.55);
  border: 1px solid rgba(71,85,105,0.18);
  border-radius: 999px;
  padding: 9px 14px;
  font-size: 13px;
}
.nav-links a.active {
  color: #fff;
  border-color: rgba(99,102,241,0.45);
  background: linear-gradient(135deg, rgba(99,102,241,0.24), rgba(139,92,246,0.24));
}
.hero {
  display: grid;
  gap: 14px;
  padding: 28px 28px 30px;
  border: 1px solid var(--line);
  border-radius: 28px;
  background: var(--panel);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  box-shadow: 0 30px 80px rgba(0,0,0,0.22);
  margin-bottom: 22px;
}
.eyebrow {
  display: inline-flex;
  width: fit-content;
  align-items: center;
  gap: 8px;
  color: #c4b5fd;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  font-size: .76rem;
}
.hero h1 {
  margin: 0;
  font-size: clamp(2rem, 4vw, 3.35rem);
  line-height: 1.08;
  letter-spacing: -0.03em;
}
.hero p {
  margin: 0;
  color: var(--muted);
  max-width: 760px;
}
.content-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 26px;
  padding: 24px;
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}
.content-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}
.panel {
  background: var(--panel-soft);
  border: 1px solid var(--line-soft);
  border-radius: 18px;
  padding: 18px;
}
.panel h3 {
  margin: 0 0 8px;
  font-size: 1.04rem;
}
.panel p, .panel li {
  color: #cbd5e1;
}
.muted { color: var(--muted); }
.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 16px;
  border-radius: 12px;
  font-weight: 700;
  border: 1px solid transparent;
}
.btn.primary {
  color: #fff;
  background: linear-gradient(135deg, #6366f1, #8b5cf6);
}
.btn.secondary {
  color: #e2e8f0;
  background: rgba(71,85,105,0.24);
  border-color: rgba(71,85,105,0.28);
}
.page-footer {
  max-width: 1120px;
  margin: 18px auto 0;
  padding: 20px 20px 0;
  color: #64748b;
  font-size: 13px;
}
.page-footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  border-top: 1px solid rgba(71,85,105,0.22);
  padding-top: 18px;
}
.page-footer a { color: #94a3b8; }
@media (max-width: 900px) {
  .content-grid { grid-template-columns: 1fr; }
}
@media (max-width: 720px) {
  .page-shell { padding-inline: 14px; }
  .hero, .content-card { padding: 20px; }
  .topbar { flex-direction: column; align-items: flex-start; }
  .nav-links { width: 100%; gap: 8px; }
  .nav-links a { flex: 1 1 0; text-align: center; }
  .btn-row { width: 100%; }
  .btn { width: 100%; }
  .page-footer { padding-inline: 14px; }
  .page-footer-inner { flex-direction: column; align-items: flex-start; gap: 8px; }
}