:root{--accent:#1f6feb;--ink:#14171c;--line:#dfe3e8;--bg:#f4f5f7}
*{box-sizing:border-box}body{margin:0;font:15px/1.45 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;color:var(--ink);background:var(--bg)}
header.top{background:var(--ink);color:#fff;padding:18px 20px}header.top h1{margin:0;font-size:22px}header.top p{margin:4px 0 0;color:#c9ced6;font-size:14px}
.badge{display:inline-block;background:#2b3240;color:#d9f99d;border-radius:999px;padding:2px 10px;font-size:12px;margin-top:8px}
main{display:grid;grid-template-columns:minmax(340px,460px) 1fr;gap:20px;padding:20px;max-width:1400px;margin:auto}
.panel{background:#fff;border:1px solid var(--line);border-radius:14px;padding:16px}
fieldset{border:0;padding:0;margin:0 0 14px}legend{font-weight:700;margin-bottom:6px;font-size:14px;text-transform:uppercase;letter-spacing:.05em;color:#5b6472}
label{display:block;font-size:13px;color:#4a5260;margin:6px 0}input,select,textarea{width:100%;font:inherit;padding:8px 10px;border:1px solid var(--line);border-radius:8px;background:#fff}
textarea{resize:vertical}.row{display:grid;grid-template-columns:1fr 1fr;gap:8px}.row3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:8px}
.seg{display:flex;border:1px solid var(--line);border-radius:10px;overflow:hidden}.seg button{flex:1;border:0;background:#fff;padding:9px;font:inherit;cursor:pointer}.seg button[aria-pressed=true]{background:var(--accent);color:#fff;font-weight:700}
.items .it{display:grid;grid-template-columns:1fr 64px 92px 30px;gap:6px;margin-bottom:6px}.items .it input{padding:7px}
.x{border:1px solid var(--line);background:#fff;border-radius:8px;cursor:pointer}
.btn{display:inline-block;border:0;border-radius:10px;padding:11px 16px;font:inherit;font-weight:700;cursor:pointer;background:var(--accent);color:#fff;text-decoration:none}
.btn.ghost{background:#fff;color:var(--ink);border:1px solid var(--line)}.actions{display:flex;gap:8px;flex-wrap:wrap;position:sticky;bottom:0;background:#fff;padding:10px 0}
.preview-wrap{position:sticky;top:12px;align-self:start}.privacy{font-size:13px;color:#4a5260;background:#eef6ff;border:1px solid #cfe3ff;border-radius:10px;padding:10px 12px;margin-bottom:12px}
footer.foot{max-width:1400px;margin:0 auto 30px;padding:0 20px;font-size:13px;color:#5b6472}footer.foot a{color:var(--ink)}
.hint{font-size:12px;color:#6b7380}
@media(max-width:900px){main{grid-template-columns:1fr;padding:12px}.preview-wrap{position:static}}
.mt{margin-top:8px}