:root{
  --bg:#f7f7fb;--card:#fff;--text:#12131a;--muted:#666b7a;--border:#e6e7ee;
  --accent:#5b5ce2;--accent2:#ececff;--success:#147a4b;--warn:#9a5a00;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:Inter,ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;background:var(--bg);color:var(--text)}
a{color:inherit}
.wrap{max-width:1120px;margin:auto;padding:0 20px}
header{position:sticky;top:0;z-index:5;background:rgba(247,247,251,.92);backdrop-filter:blur(12px);border-bottom:1px solid var(--border)}
.nav{height:68px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.brand{font-weight:900;font-size:22px;text-decoration:none;letter-spacing:-.5px}
.brand span{color:var(--accent)}
.navlinks{display:flex;gap:18px;font-size:14px;color:var(--muted)}
.navlinks a{text-decoration:none}
.hero{padding:70px 0 34px;text-align:center}
.kicker{display:inline-flex;background:var(--accent2);color:var(--accent);border-radius:999px;padding:8px 12px;font-weight:800;font-size:13px}
h1{font-size:clamp(38px,7vw,70px);line-height:1.02;letter-spacing:-2.5px;margin:18px auto 16px;max-width:920px}
.hero p{max-width:760px;margin:auto;color:var(--muted);font-size:19px;line-height:1.55}
.tool{max-width:900px;margin:26px auto;background:var(--card);border:1px solid var(--border);border-radius:24px;padding:20px;box-shadow:0 12px 40px rgba(22,24,36,.06)}
.drop{min-height:210px;border:1.5px dashed #cfd2dc;border-radius:18px;display:grid;place-items:center;padding:24px;text-align:center;background:#fbfbfd;cursor:pointer}
.drop.drag{border-color:var(--accent);background:var(--accent2)}
.drop strong{display:block;font-size:20px;margin-bottom:7px}
.preview{display:none;width:100%;max-height:340px;object-fit:contain;border-radius:14px;background:#f2f2f6}
.filemeta{margin-top:10px;color:var(--muted);font-size:13px}
.grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:18px}
.field label{display:block;font-weight:800;font-size:13px;margin-bottom:7px}
.field input,.field select{width:100%;padding:13px 12px;border:1px solid var(--border);border-radius:12px;background:#fff;font:inherit}
.actions{display:flex;gap:10px;margin-top:16px;flex-wrap:wrap}
button,.btn{border:0;border-radius:13px;padding:14px 18px;font-weight:900;font-size:15px;cursor:pointer;text-decoration:none;display:inline-flex;align-items:center;justify-content:center}
.primary{background:var(--accent);color:#fff;flex:1;min-width:220px}
.secondary{background:#fff;color:var(--text);border:1px solid var(--border)}
button:disabled{opacity:.55;cursor:not-allowed}
.status{display:none;margin-top:16px;padding:14px;border-radius:14px;font-size:14px;line-height:1.5}
.status.ok{display:block;background:#ecf8f2;color:var(--success)}
.status.warn{display:block;background:#fff5e7;color:var(--warn)}
.result{display:none;margin-top:18px;border-top:1px solid var(--border);padding-top:18px}
.result.show{display:block}
.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}
.metric{background:#f7f8fb;padding:12px;border-radius:12px}
.metric small{display:block;color:var(--muted);margin-bottom:4px}
.metric strong{font-size:15px}
.section{padding:56px 0}
.section h2{font-size:34px;letter-spacing:-1px;margin:0 0 12px}
.section p{color:var(--muted);line-height:1.65}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:22px}
.card{background:var(--card);border:1px solid var(--border);border-radius:18px;padding:20px}
.card h3{margin:0 0 8px}
.steps{counter-reset:s;display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:20px}
.step{background:#fff;border:1px solid var(--border);border-radius:16px;padding:18px}
.step:before{counter-increment:s;content:counter(s);display:grid;place-items:center;width:30px;height:30px;background:var(--accent2);color:var(--accent);border-radius:50%;font-weight:900;margin-bottom:12px}
.cta{background:#171824;color:#fff;border-radius:24px;padding:28px;margin:40px 0}
.cta p{color:#c9cad4}
.storeBtns{display:flex;gap:10px;flex-wrap:wrap}
.storeBtn{background:#2a2b36;color:#9ea0aa;border:1px solid #3b3d49;cursor:not-allowed}
.ad{margin:28px 0;border:1px dashed #cdd0d9;border-radius:14px;min-height:90px;display:grid;place-items:center;color:#9a9dab;font-size:12px}
.linkgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:16px}
.linkgrid a{background:#fff;border:1px solid var(--border);border-radius:13px;padding:14px;text-decoration:none;font-weight:700;font-size:14px}
footer{border-top:1px solid var(--border);padding:30px 0 50px;color:var(--muted);font-size:13px}
.note{font-size:12px;color:var(--muted);margin-top:10px;line-height:1.5}
@media(max-width:800px){
  .navlinks{display:none}.hero{padding-top:48px}
  .grid{grid-template-columns:1fr 1fr}.cards,.steps,.linkgrid{grid-template-columns:1fr 1fr}
  .metrics{grid-template-columns:1fr 1fr}
}
@media(max-width:520px){
  .grid,.cards,.steps,.linkgrid{grid-template-columns:1fr}
  h1{letter-spacing:-1.5px}.tool{padding:14px}.wrap{padding:0 14px}
}