/* 404 ringan — no image, no font import */
:root{
  --bg:#0b1020;
  --card: rgba(255,255,255,.06);
  --line: rgba(255,255,255,.12);
  --text: #eef2ff;
  --muted: rgba(238,242,255,.72);
  --accent: #7c3aed;
  --accent2:#22d3ee;
  --shadow: 0 18px 60px rgba(0,0,0,.55);
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  color:var(--text);
  background:
    radial-gradient(900px 650px at 20% 20%, rgba(124,58,237,.22), transparent 60%),
    radial-gradient(800px 600px at 85% 30%, rgba(34,211,238,.16), transparent 60%),
    linear-gradient(180deg, #060816, var(--bg));
  overflow:hidden;
}
.wrap{
  min-height:100%;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  padding:18px;
  gap:14px;
}
.card{
  width:min(760px, 100%);
  border:1px solid var(--line);
  background: linear-gradient(180deg, rgba(255,255,255,.08), rgba(255,255,255,.03));
  border-radius:18px;
  box-shadow:var(--shadow);
  position:relative;
  overflow:hidden;
}
.bg{position:absolute; inset:-40px; pointer-events:none}
.blob{
  position:absolute;
  border-radius:999px;
  filter: blur(18px);
  opacity:.9;
  transform: translate3d(0,0,0);
}
.b1{width:320px;height:320px; left:6%; top:10%; background: rgba(124,58,237,.35)}
.b2{width:420px;height:420px; right:8%; top:18%; background: rgba(34,211,238,.26)}
.b3{width:520px;height:520px; left:22%; bottom:-10%; background: rgba(255,255,255,.08)}

.content{
  position:relative;
  padding:28px 24px;
  text-align:left;
}
.code{
  display:inline-block;
  padding:6px 12px;
  border:1px solid rgba(255,255,255,.18);
  background: rgba(0,0,0,.18);
  border-radius:999px;
  font-weight:800;
  letter-spacing:.14em;
}
h1{
  margin:14px 0 10px;
  font-size: clamp(24px, 3.2vw, 36px);
  line-height:1.15;
}
p{
  margin:0 0 16px;
  color:var(--muted);
  line-height:1.6;
  max-width:60ch;
}
.actions{display:flex; gap:10px; flex-wrap:wrap}
.btn{
  border:1px solid rgba(255,255,255,.16);
  background: rgba(0,0,0,.22);
  color:var(--text);
  padding:10px 14px;
  border-radius:12px;
  cursor:pointer;
  text-decoration:none;
  font-weight:600;
  transition: transform .08s ease, background .2s ease, border-color .2s ease;
}
.btn:hover{transform: translateY(-1px); border-color: rgba(255,255,255,.26)}
.btn.primary{
  background: linear-gradient(90deg, rgba(124,58,237,.95), rgba(34,211,238,.9));
  border-color: transparent;
}
.btn.primary:hover{filter: brightness(1.05)}
.meta{
  margin-top:14px;
  color: rgba(238,242,255,.55);
  font-size:12px;
  word-break:break-word;
}
.foot{
  color: rgba(238,242,255,.45);
  font-size:12px;
}