/* Basic, high-contrast, mobile-first styles suitable for low-end devices */
:root {
  --bg: #0f1226;
  --panel: #15183a;
  --text: #eef1ff;
  --muted: #b9c0ff;
  --accent: #5a46e8;
  --accent-2: #2ad1b0;
  --danger: #ff5a7a;
  --radius: 14px;
}
* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Noto Sans, Ubuntu, Cantarell, Helvetica, Arial, sans-serif;
  color: var(--text);
  background: radial-gradient(1200px 700px at 10% -10%, #2b2f63 0%, #0f1226 40%),
              radial-gradient(600px 400px at 120% -10%, #1b6f75 0%, #0f1226 50%),
              var(--bg);
}
img { max-width: 100%; height: auto; }
.container { width: min(100%, 1024px); padding: 1rem; margin: 0 auto; }
.row { display: flex; gap: .75rem; }
.center { align-items: center; }
.between { justify-content: space-between; }
.grid { display: grid; gap: 1rem; }
.grid.two { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.cards { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }

.skip-link {
  position: absolute; left: -999px; top: auto; width: 1px; height: 1px; overflow: hidden;
}
.skip-link:focus { left: 1rem; top: 1rem; width: auto; height: auto; padding: .5rem 1rem; background: #000; color: #fff; border-radius: .5rem; }

.site-header {
  position: sticky; top: 0; backdrop-filter: blur(10px);
  background: color-mix(in srgb, var(--bg) 60%, transparent);
  border-bottom: 1px solid rgba(255,255,255,.08);
  z-index: 10;
}
.brand .logo { width: 36px; height: 36px; }
.brand-name { font-weight: 700; margin-left: .5rem; letter-spacing: .2px; }
.nav { list-style: none; margin: 0; padding: 0; display: flex; gap: .75rem; }
.nav a { color: var(--text); text-decoration: none; padding: .5rem .75rem; border-radius: .5rem; }
.nav a:hover, .nav a:focus { background: rgba(255,255,255,.08); }

.hero { padding: 3rem 0 2rem; text-align: left; }
.hero h1 { font-size: clamp(1.8rem, 3.5vw, 2.4rem); margin: 0 0 .5rem; }
.lead { color: var(--muted); max-width: 60ch; }
.note { color: var(--muted); font-size: .95rem; }

.section { padding: 2rem 0; }
.section.alt { background: linear-gradient(180deg, rgba(255,255,255,.04), rgba(255,255,255,0)); }

.card {
  background: color-mix(in srgb, var(--panel) 85%, transparent);
  border: 1px solid rgba(255,255,255,.08);
  border-radius: var(--radius);
  padding: 1rem;
  box-shadow: 0 10px 30px rgba(0,0,0,.25);
}
.card h3 { margin-top: 0; }
.tag { color: var(--accent-2); font-weight: 600; }

.activities { padding-left: 1.25rem; }
.activities li { margin: .5rem 0; }

.btn { border: 1px solid rgba(255,255,255,.2); padding: .6rem .9rem; border-radius: .7rem; cursor: pointer; }
.btn.primary { background: var(--accent); color: #fff; border-color: color-mix(in srgb, var(--accent) 80%, #000); }
.btn.secondary { background: #233; color: #fff; }
.btn:focus { outline: 2px solid var(--accent-2); outline-offset: 2px; }

.site-footer { padding: 2rem 0; border-top: 1px solid rgba(255,255,255,.08); }
.site-footer .top { color: var(--muted); }

@media (prefers-reduced-motion: reduce) {
  * { scroll-behavior: auto !important; animation: none !important; transition: none !important; }
}