:root {
  --bg: #0b0f14;
  --panel: rgba(255, 255, 255, 0.06);
  --panel-strong: rgba(255, 255, 255, 0.10);
  --text: rgba(255, 255, 255, 0.92);
  --muted: rgba(255, 255, 255, 0.70);
  --border: rgba(255, 255, 255, 0.12);
  --shadow: 0 10px 30px rgba(0,0,0,0.35);
  --radius: 16px;
  --maxw: 980px;
}

* { box-sizing: border-box; }

html, body {
  height: 100%;
}

body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  color: var(--text);
  background: radial-gradient(1200px 700px at 20% 0%, rgba(84, 114, 255, 0.18), transparent 60%),
              radial-gradient(900px 600px at 80% 20%, rgba(0, 212, 255, 0.12), transparent 55%),
              var(--bg);
  line-height: 1.5;
}

a { color: inherit; text-decoration: none; }

.container {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 24px;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 8px;
  background: #fff;
  color: #000;
  padding: 8px 12px;
  border-radius: 8px;
}
.skip-link:focus { left: 12px; z-index: 10; }

.site-header {
  border-bottom: 1px solid var(--border);
  background: rgba(0,0,0,0.18);
  backdrop-filter: blur(10px);
}

.header-grid {
  display: flex;
  gap: 24px;
  align-items: flex-start;
  justify-content: space-between;
}

.identity h1 {
  margin: 0 0 6px 0;
  font-size: 34px;
  letter-spacing: -0.02em;
}

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

.top-links {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  justify-content: flex-end;
  padding-top: 6px;
}

.top-links a {
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: rgba(255,255,255,0.04);
}
.top-links a:hover {
  background: rgba(255,255,255,0.08);
  border-color: rgba(255,255,255,0.18);
}

.intro h2, .secondary h2 {
  font-size: 18px;
  margin: 28px 0 8px 0;
}
.intro p {
  margin: 0 0 18px 0;
  color: var(--muted);
  max-width: 72ch;
}

.cards {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 14px;
}

.card {
  grid-column: span 6;
  padding: 16px 16px 14px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--panel);
  box-shadow: var(--shadow);
  transition: transform 120ms ease, background 120ms ease, border-color 120ms ease;
  outline: none;
}
.card:hover, .card:focus-visible {
  transform: translateY(-2px);
  background: var(--panel-strong);
  border-color: rgba(255,255,255,0.20);
}

.card-title {
  font-weight: 650;
  font-size: 16px;
  margin-bottom: 6px;
}

.card-desc {
  color: var(--muted);
  margin-bottom: 10px;
}

.card-meta {
  font-size: 12px;
  color: rgba(255,255,255,0.60);
  letter-spacing: 0.02em;
}

.secondary {
  margin-top: 22px;
}

.link-list {
  margin: 10px 0 0 0;
  padding-left: 18px;
  color: var(--muted);
}
.link-list a {
  text-decoration: underline;
  text-decoration-color: rgba(255,255,255,0.25);
}
.link-list a:hover {
  text-decoration-color: rgba(255,255,255,0.55);
}

.site-footer {
  margin-top: 34px;
  border-top: 1px solid var(--border);
  background: rgba(0,0,0,0.18);
  backdrop-filter: blur(10px);
}

.footer-grid {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.muted { color: rgba(255,255,255,0.60); }

/* Responsive */
@media (max-width: 760px) {
  .header-grid { flex-direction: column; }
  .top-links { justify-content: flex-start; }
  .card { grid-column: span 12; }
}