[data-theme="light"]{
  --bg:#ffffff;--bg-soft:#f5f5f8;--bg-card:#ffffff;
  --border:#e5e7eb;--text:#0b0b10;--text-dim:#6b7280;--code:#f8f8fc;
}
[data-theme="light"] header.site{background:rgba(255,255,255,.85)}
[data-theme="light"] .hero h1,
[data-theme="light"] .stat .n{
  background:linear-gradient(135deg,#0b0b10 0%,#7c3aed 100%);
  -webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;
}
.theme-btn{
  background:transparent;border:1px solid var(--border);color:var(--text-dim);
  width:28px;height:28px;border-radius:6px;cursor:pointer;font-size:14px;
  line-height:1;display:inline-flex;align-items:center;justify-content:center;
  margin-left:8px;padding:0;
}
.theme-btn:hover{color:var(--text);border-color:var(--text-dim)}