:root{--theme-color:#1c1a99;--bg:#f6f6fb;--card:#fff;--text:#1d1d2b;--muted:#666}
*{box-sizing:border-box}[hidden]{display:none!important}
body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text)}
.top{padding:12px 20px;background:var(--theme-color);color:#fff;font-weight:600}.top a{color:#fff;text-decoration:none}.top .sep{opacity:.6;margin:0 8px}
.wrap{max-width:980px;margin:0 auto;padding:20px 16px 40px}
.hero{text-align:center;margin-bottom:16px}.hero h1{margin:0 0 8px;font-size:2rem}.sub{color:var(--muted);margin:0}
.tool{display:grid;grid-template-columns:1fr 340px;gap:16px}
.card{background:var(--card);border-radius:16px;padding:16px;box-shadow:0 2px 10px rgba(0,0,0,.05)}
.types{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:14px}
button{font:inherit;border:1px solid #d6d6e4;background:#fff;border-radius:8px;padding:8px 14px;cursor:pointer;color:var(--text)}
button.active,button.primary{background:var(--theme-color);color:#fff;border-color:var(--theme-color)}
label{display:block;font-size:.9rem;font-weight:600;margin:10px 0 4px}
input[type=text],input[type=url],input[type=email],input[type=tel],input[type=number],textarea,select{width:100%;padding:9px 10px;border:1px solid #d6d6e4;border-radius:8px;font:inherit;background:#fff}
textarea{min-height:90px;resize:vertical}
.row{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.check{display:flex;align-items:center;gap:6px;font-weight:400}
.opts{margin-top:16px;border-top:1px solid #eee;padding-top:6px}
input[type=color]{width:100%;height:38px;border:1px solid #d6d6e4;border-radius:8px;padding:2px;background:#fff}
input[type=range]{width:100%}
.preview{display:flex;flex-direction:column;align-items:center;gap:12px;position:sticky;top:12px;align-self:start}
#qr-canvas{max-width:100%;height:auto;border-radius:8px;box-shadow:0 0 0 1px #eee;image-rendering:pixelated}
.actions{display:flex;flex-wrap:wrap;gap:8px;justify-content:center}
.status{font-size:.85rem;color:var(--muted);text-align:center;min-height:1.2em}.status.err{color:#b00020}
.content{margin-top:30px;line-height:1.6}.content h2{font-size:1.25rem;margin-top:26px}details{background:var(--card);border-radius:8px;padding:10px 14px;margin:8px 0}summary{cursor:pointer;font-weight:600}
@media(max-width:760px){.tool{grid-template-columns:1fr}.preview{position:static}.hero h1{font-size:1.5rem}}