:root{
  --bg:#fafafa; --card:#fff; --border:#eee; --text:#222; --muted:#666; --accent:#e31b23;
}
*{box-sizing:border-box}
body{margin:0; font:16px/1.5 system-ui, -apple-system, Segoe UI, Roboto, Arial; color:var(--text); background:var(--bg);}
.container{max-width:720px; margin:40px auto; padding:0 16px;}
.card{background:var(--card); border:1px solid var(--border); border-radius:16px; padding:16px; box-shadow:0 6px 24px rgba(0,0,0,.04);}
h1{font-size:22px; margin:0 0 12px}
label{font-weight:600; display:block; margin:10px 0 6px}
input{width:100%; padding:10px 12px; border:1px solid #ddd; border-radius:12px; font:inherit}
.grid{display:grid; gap:12px}
.grid-2{grid-template-columns:1fr 1fr}
.btn{border:0; border-radius:12px; padding:10px 14px; font-weight:700; cursor:pointer; background:#f2f2f2;}
.btn:hover{background:#e9e9e9;}
.btn-primary{background:var(--accent); color:#fff;}
.btn-primary:hover{filter:brightness(0.95)}
.row{display:flex; gap:12px; align-items:center; flex-wrap:wrap}
.badge{display:inline-block; padding:4px 8px; border-radius:999px; background:#f2f2f2; font-weight:700; font-size:12px; color:#444}
.muted{color:var(--muted); font-size:14px}
.sep{height:1px; background:#eee; margin:12px 0}
.right{margin-inline-start:auto}
.code{font-family:ui-monospace, SFMono-Regular, Menlo, monospace; background:#f7f7f7; padding:4px 8px; border-radius:8px}