:root{
  --bg:#0b0f17;
  --panel:#111827;
  --panel2:#0f172a;
  --text:#e5e7eb;
  --muted:#9ca3af;
  --border:rgba(255,255,255,.08);
  --accent:#60a5fa;
  --shadow:0 10px 30px rgba(0,0,0,.35);
  --radius:18px;
  --max:1100px;
  --pad:20px;
  color-scheme: dark;
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial, "Apple Color Emoji","Segoe UI Emoji";
  background: radial-gradient(1200px 600px at 20% 0%, rgba(96,165,250,.25), transparent 55%),
              radial-gradient(900px 500px at 90% 20%, rgba(34,197,94,.18), transparent 60%),
              var(--bg);
  color:var(--text);
}

a{color:inherit; text-decoration:none}
a:hover{color:var(--accent)}
img{max-width:100%; display:block}

.container{
  max-width:var(--max);
  margin:0 auto;
  padding: calc(var(--pad) * 1.5) var(--pad);
}

.card{
  background: linear-gradient(180deg, rgba(255,255,255,.03), rgba(255,255,255,.01));
  border:1px solid var(--border);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
}

.nav{
  position: sticky;
  top:0;
  z-index: 10;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:14px 18px;
  margin: 14px auto 0;
  max-width: var(--max);
  background: rgba(17,24,39,.72);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: 999px;
}

.nav__brand{
  display:flex;
  align-items:center;
  gap:10px;
  padding:6px 8px;
}
.nav__logo{width:28px;height:28px}
.nav__title{font-weight:650; letter-spacing:.2px}

.nav__links{
  display:flex;
  gap:14px;
  align-items:center;
}
.nav__links a{
  padding:8px 10px;
  border-radius:999px;
  color:var(--muted);
}
.nav__links a[aria-current="page"]{
  color:var(--text);
  background: rgba(96,165,250,.16);
  border:1px solid rgba(96,165,250,.26);
}

.nav__toggle{
  display:none;
  border:1px solid var(--border);
  background: rgba(255,255,255,.04);
  color: var(--text);
  padding:8px 12px;
  border-radius:999px;
  cursor:pointer;
}
.sr-only{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}

.hero{
  margin-top: 28px;
  padding: 34px;
}
.hero h1{
  margin:0 0 8px;
  font-size: clamp(26px, 3vw, 40px);
}
.hero p{
  margin:0;
  color:var(--muted);
  max-width: 70ch;
  line-height: 1.5;
}

.grid{
  display:grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 16px;
  margin-top: 18px;
}

.tile{
  grid-column: span 4;
  padding:18px;
  border-radius:var(--radius);
  border:1px solid var(--border);
  background: rgba(15,23,42,.55);
  transition: transform .12s ease, border-color .12s ease;
}
.tile:hover{
  transform: translateY(-2px);
  border-color: rgba(96,165,250,.35);
}
.tile h3{margin:0 0 6px; font-size:18px}
.tile p{margin:0; color:var(--muted); line-height:1.45}

.footer{
  max-width: var(--max);
  margin: 28px auto 18px;
  padding: 18px var(--pad);
  display:flex;
  justify-content:space-between;
  gap:12px;
  color: var(--muted);
}

.page{
  padding: 26px;
  margin-top: 20px;
}
.page h2{margin:0 0 10px}
.page p{color:var(--muted); line-height:1.6; margin:0 0 12px}

/* Holding page image layout */
.holding{
  min-height: calc(100vh - 60px);
  display:flex;
  align-items:center;
  justify-content:center;
  padding: 32px 20px;
}
.holding__wrap{
  max-width: 820px;
  text-align:center;
  padding: 26px;
}
.holding__img{
  margin: 0 auto 18px;
  max-width: 520px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

/* Responsive */
@media (max-width: 860px){
  .tile{grid-column: span 6;}
}
@media (max-width: 560px){
  .nav{
    border-radius: 22px;
  }
  .nav__toggle{display:inline-flex}
  .nav__links{
    display:none;
    position:absolute;
    top: 64px;
    right: 14px;
    flex-direction:column;
    align-items:stretch;
    gap:6px;
    padding:10px;
    background: rgba(17,24,39,.92);
    border:1px solid var(--border);
    border-radius: 16px;
    width: 200px;
  }
  .nav__links--open{display:flex}
  .tile{grid-column: span 12;}
}