:root{
  --bg:#0b0c0f;
  --fg:#e8e8ea;
  --muted:#a7a7ad;
  --line:#2a2b31;
  --accent:#7bd3ff;
  --accent2:#ffd47b;
  --card:#101218;
  --shadow: rgba(0,0,0,0.45);
  --mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  --sans: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family:var(--sans);
  color:var(--fg);
  background:
    linear-gradient(180deg, rgba(255,255,255,0.04), rgba(255,255,255,0.0)),
    radial-gradient(1000px 600px at 20% 0%, rgba(123,211,255,0.12), transparent 55%),
    radial-gradient(900px 600px at 90% 10%, rgba(255,212,123,0.10), transparent 55%),
    var(--bg);
}

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

.skip{
  position:absolute;
  left:-9999px;
  top:auto;
  width:1px;
  height:1px;
  overflow:hidden;
}
.skip:focus{
  left:12px;
  top:12px;
  width:auto;
  height:auto;
  padding:10px 12px;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:12px;
  z-index:10;
}

.top{
  position:sticky;
  top:0;
  background:rgba(11,12,15,0.88);
  backdrop-filter: blur(10px);
  border-bottom:1px solid var(--line);
}

.brand{
  display:flex;
  flex-direction:column;
  gap:2px;
  padding:14px 16px 10px;
}

.mark{
  font-family:var(--mono);
  letter-spacing:0.5px;
  font-weight:700;
  color:var(--fg);
}

.tag{
  font-size:13px;
  color:var(--muted);
}

.nav{
  display:flex;
  gap:14px;
  padding:0 16px 14px;
  flex-wrap:wrap;
}
.nav a{
  font-family:var(--mono);
  font-size:14px;
  padding:6px 10px;
  border:1px solid var(--line);
  border-radius:999px;
  background:rgba(16,18,24,0.75);
}

.wrap{
  max-width:980px;
  margin:0 auto;
  padding:22px 16px 40px;
}

.hero{
  border:1px solid var(--line);
  border-radius:18px;
  background:rgba(16,18,24,0.85);
  box-shadow: 0 16px 40px var(--shadow);
  padding:22px 18px;
}

.hero h1{
  margin:0 0 8px;
  font-size:28px;
}

.hero p{
  margin:0 0 12px;
  color:var(--muted);
  line-height:1.5;
}

.grid{
  margin-top:18px;
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(230px,1fr));
  gap:12px;
}

.card{
  border:1px solid var(--line);
  border-radius:16px;
  background:rgba(16,18,24,0.75);
  padding:14px 14px 12px;
}

.card h2{
  margin:0 0 6px;
  font-size:16px;
  font-family:var(--mono);
}

.card p{
  margin:0;
  color:var(--muted);
  line-height:1.45;
  font-size:14px;
}

.h1{
  font-size:24px;
  font-weight:700;
  margin-bottom:8px;
}

.muted{
  color:var(--muted);
}

.callout{
  margin:16px 0;
  padding:12px;
  border-left:3px solid var(--accent);
  background:rgba(123,211,255,0.05);
}

.btn{
  border:1px solid var(--line);
  background:rgba(0,0,0,0.25);
  color:var(--fg);
  font-family:var(--mono);
  padding:10px 16px;
  border-radius:8px;
  cursor:pointer;
  font-size:14px;
}
.btn:hover{
  border-color:var(--accent);
  background:rgba(123,211,255,0.1);
}

.reveal{
  display:none;
  margin-top:12px;
  padding:12px;
  border:1px dashed rgba(123,211,255,0.45);
  border-radius:8px;
  background:rgba(123,211,255,0.06);
  color:var(--fg);
  font-family:var(--mono);
  line-height:1.5;
  font-size:13px;
  white-space:pre-wrap;
}

.reveal.show{display:block}

.hidden{display:none}

.tiny{font-size:12px}

.tile{
  display:block;
  border:1px solid var(--line);
  border-radius:12px;
  background:rgba(16,18,24,0.75);
  padding:16px;
  transition:all 0.2s;
}

.tile:hover{
  border-color:var(--accent);
  background:rgba(16,18,24,0.95);
  transform:translateY(-2px);
}

.tile-title{
  font-family:var(--mono);
  font-size:16px;
  font-weight:700;
  margin-bottom:6px;
}

.tile-body{
  font-size:14px;
  line-height:1.4;
}

.foot{
  border-top:1px solid var(--line);
  padding:18px 16px;
  color:var(--muted);
}

.pixel-line{
  height:6px;
  margin:0 auto 12px;
  max-width:980px;
  border-radius:999px;
  background:
    repeating-linear-gradient(90deg,
      rgba(123,211,255,0.70) 0 8px,
      rgba(255,212,123,0.70) 8px 16px,
      rgba(232,232,234,0.35) 16px 24px,
      rgba(123,211,255,0.35) 24px 32px
    );
  opacity:0.35;
}

.foot-text{
  display:flex;
  gap:10px;
  flex-wrap:wrap;
  align-items:center;
  justify-content:center;
  font-family:var(--mono);
  font-size:13px;
}

.sep{opacity:0.5}

code, pre{
  font-family:var(--mono);
}
pre{
  background:rgba(0,0,0,0.25);
  border:1px solid var(--line);
  border-radius:8px;
  padding:12px;
  overflow:auto;
}