:root {
  --bg: #0b0f17;
  --panel: #111827;
  --text: #e5e7eb;
  --muted: #94a3b8;
  --accent: #60a5fa;
  --card: #0f172a;
  --border: #1f2937;
}

* { 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";
  background: radial-gradient(1200px 600px at 20% -10%, #111827 0%, var(--bg) 50%);
  color: var(--text);
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px clamp(16px, 5vw, 48px);
  border-bottom: 1px solid var(--border);
  background: rgba(17,24,39,0.6);
  backdrop-filter: blur(6px);
  position: sticky;
  top: 0;
  z-index: 10;
}

.brand { display: flex; gap: 12px; align-items: center; }
.logo {
  width: 36px; height: 36px; border-radius: 10px;
  background: conic-gradient(from 180deg, #60a5fa, #a78bfa, #22d3ee, #60a5fa);
  box-shadow: 0 0 24px rgba(96,165,250,0.35), inset 0 0 18px rgba(255,255,255,0.08);
}
h1 { font-size: clamp(18px, 3vw, 24px); margin: 0; letter-spacing: 0.3px; }

.cta {
  display: inline-flex; align-items: center; gap: 8px;
  background: linear-gradient(180deg, #2563eb, #1d4ed8);
  color: white; padding: 10px 14px; border-radius: 12px; border: 1px solid #3b82f6;
  text-decoration: none; font-weight: 600;
}
.cta:hover { filter: brightness(1.05); }

.hero {
  padding: 40px clamp(16px, 5vw, 48px) 12px;
}
.hero h2 {
  margin: 0 0 8px 0;
  font-size: clamp(22px, 5vw, 36px);
}
.hero p { margin: 0; color: var(--muted); max-width: 70ch; }

.grid {
  padding: 24px clamp(16px, 5vw, 48px) 72px;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 18px;
}

.card {
  background: linear-gradient(180deg, rgba(15,23,42,0.9), rgba(2,6,23,0.9));
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 16px;
  display: grid;
  gap: 10px;
  transition: transform .15s ease, box-shadow .15s ease;
}
.card:hover { transform: translateY(-2px); box-shadow: 0 8px 28px rgba(0,0,0,0.35); }
.card h3 { margin: 0; font-size: 18px; }
.card p { margin: 0; color: var(--muted); min-height: 40px; }
.card .tags { display: flex; flex-wrap: wrap; gap: 6px; }
.tag {
  font-size: 12px; color: #bfdbfe; background: rgba(37,99,235,0.15);
  border: 1px solid rgba(96,165,250,0.25);
  padding: 3px 8px; border-radius: 999px;
}
.actions { display: flex; gap: 8px; margin-top: 6px; }
.btn {
  padding: 8px 10px; border-radius: 10px; border: 1px solid var(--border);
  background: #0b1220; color: var(--text); text-align: center; flex: 1;
}
.btn.primary { background: #111f3a; border-color: #1e3a8a; color: #dbeafe; }
.footer {
  padding: 24px clamp(16px, 5vw, 48px);
  border-top: 1px solid var(--border);
  color: var(--muted);
  text-align: center;
}
.small { font-size: 12px; }
.notice { margin-top: 8px; font-size: 12px; color: #94a3b8; }