:root{
  --brand:#c0392b;--brand2:#e05545;--ink:#17181c;--muted:#6b7280;--bg:#f5f5f6;--card:#fff;
  --line:#e4e4e7;--radius:12px;
}
*{box-sizing:border-box}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;background:var(--bg);color:var(--ink);line-height:1.65}
a{color:var(--brand2)}
.wrap{max-width:940px;margin:0 auto;padding:0 20px}
header.site{background:#121316;color:#fff;padding:14px 0}
header.site .wrap{display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.logo{font-weight:800;font-size:19px;color:#fff;text-decoration:none;letter-spacing:.02em}
.logo .tick{color:var(--brand2)}
nav.top{margin-left:auto;display:flex;gap:18px;font-size:14px}
nav.top a{color:#c9cbd1;text-decoration:none}
.hero{padding:34px 0 6px}
h1{font-size:30px;margin:0 0 8px;color:#121316}
.sub{color:var(--muted);max-width:730px;font-size:16px}
.badge-row{display:flex;gap:8px;flex-wrap:wrap;margin:14px 0 4px}
.badge{font-size:12.5px;background:#efe0de;color:var(--brand);padding:3px 10px;border-radius:20px}
.badge.priv{background:#e7f5ec;color:#1e7d43}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:0 1px 4px rgba(0,0,0,.06)}
.dropzone{border:2px dashed #cbb;text-align:center;padding:46px 22px;transition:.15s;margin-top:14px}
.dropzone.over{border-color:var(--brand2);background:#fdf3f1}
.big-icon{font-size:44px;margin-bottom:8px}
.drop-title{font-size:18px;font-weight:600;margin:6px 0}
.linklike{background:none;border:0;color:var(--brand2);font:inherit;font-weight:700;cursor:pointer;text-decoration:underline;padding:0}
.note{font-size:13px;color:var(--muted)}
.center{text-align:center}
.tool-grid{display:grid;grid-template-columns:1.4fr 1fr;gap:18px;margin-top:16px;align-items:start}
@media(max-width:820px){.tool-grid{grid-template-columns:1fr}}
#previewWrap{background:#121316;border-radius:10px;padding:10px;text-align:center;overflow:auto}
#preview{max-width:100%;height:auto;border-radius:6px;background:#fff}
.ctl{margin:0 0 14px}
.ctl label{display:block;font-size:12.5px;font-weight:700;margin-bottom:5px}
input[type=range]{width:100%}
.chk{display:flex;align-items:center;gap:7px;font-size:13.5px;font-weight:600;margin:10px 0}
.chk input{width:auto}
.primary{display:inline-block;background:var(--brand2);color:#fff;border:0;border-radius:9px;padding:12px 22px;font-size:15px;font-weight:700;cursor:pointer}
.primary:hover{background:var(--brand)}
button.ghost{padding:10px 16px;font-size:14px;font-weight:600;color:var(--brand2);background:#fff;border:1px solid var(--brand2);border-radius:8px;cursor:pointer}
.dl-row{display:flex;gap:10px;flex-wrap:wrap;margin-top:6px}
section.seo{background:#fff;border-top:1px solid var(--line);margin-top:34px;padding:34px 0}
section.seo h2{color:#121316;font-size:22px}
section.seo h3{color:var(--brand);font-size:17px;margin-top:22px}
section.seo p,section.seo li{font-size:15px;color:#33353b}
.faq dt{font-weight:700;margin-top:16px}
.faq dd{margin:4px 0 0}
footer.site{background:#121316;color:#a0a3ab;font-size:13px;padding:24px 0;margin-top:0}
footer.site a{color:#c9cbd1}
footer.site .disc{font-size:12px;color:#7c7f87;margin-top:8px}
@media(max-width:480px){h1{font-size:24px}.dropzone{padding:32px 16px}}