:root{
  --bg:#08090b; --surface:rgba(255,255,255,0.045); --surface-2:rgba(255,255,255,0.07);
  --border:rgba(255,255,255,0.09); --text:#f5f5f7; --text-dim:#8b8d94;
  --accent-a:#6d2cf0; --accent-b:#c63a96; --gradient:linear-gradient(135deg,var(--accent-a),var(--accent-b));
  --ok:#4ade80; --warn:#fbbf24; --err:#ff6b6b;
}
*{box-sizing:border-box; margin:0; padding:0;}
html,body{background:var(--bg); color:var(--text); font-family:'Inter',system-ui,sans-serif; overflow-x:hidden;}
body{-webkit-font-smoothing:antialiased; line-height:1.5;}
a{color:inherit;}
img,svg{max-width:100%; display:block;}
.bg-glow{position:fixed; inset:0; z-index:0; pointer-events:none;
  background:radial-gradient(ellipse 60% 40% at 30% 0%, rgba(139,107,245,0.16), transparent 60%),
              radial-gradient(ellipse 50% 40% at 80% 10%, rgba(198,58,150,0.10), transparent 60%);}
.wrap{max-width:920px; margin:0 auto; padding:0 24px; position:relative; z-index:1;}

.topbar{display:flex; align-items:center; justify-content:space-between; padding:22px 0;}
.brand{font-size:17px; font-weight:800; letter-spacing:-0.01em; display:flex; align-items:center; gap:10px; text-decoration:none;}
.brand-mark{width:32px; height:32px; border-radius:9px; background:var(--gradient); display:flex; align-items:center; justify-content:center; font-size:15px; flex-shrink:0;}
.brand span{background:var(--gradient); -webkit-background-clip:text; background-clip:text; color:transparent; font-weight:800;}
.topbar a.cta{font-size:13px; font-weight:600; color:var(--text-dim); text-decoration:none; padding:8px 15px; border:1px solid var(--border); border-radius:999px; transition:.15s;}
.topbar a.cta:hover{color:var(--text); border-color:var(--accent-a);}

.hero{padding:36px 0 8px; text-align:center;}
.eyebrow{display:inline-flex; align-items:center; gap:6px; font-size:12px; font-weight:700; color:var(--accent-b);
  background:rgba(198,58,150,0.12); border:1px solid rgba(198,58,150,0.25); padding:5px 12px; border-radius:999px; margin-bottom:18px;}
h1{font-size:clamp(28px,4.4vw,42px); font-weight:800; letter-spacing:-0.02em; line-height:1.12; margin-bottom:14px;}
h1 em{font-style:normal; background:var(--gradient); -webkit-background-clip:text; background-clip:text; color:transparent;}
.hero p{color:var(--text-dim); font-size:15.5px; max-width:560px; margin:0 auto;}
.swap-link{display:inline-flex; align-items:center; gap:6px; margin-top:16px; font-size:12.5px; font-weight:600; color:var(--text-dim); text-decoration:none; padding:7px 14px; border:1px solid var(--border); border-radius:999px; transition:.15s;}
.swap-link:hover{color:var(--text); border-color:var(--accent-a);}
.swap-link svg{flex-shrink:0;}

.tool{margin:34px 0 10px; background:var(--surface); border:1px solid var(--border); border-radius:20px; padding:22px;}
.drop{border:1.5px dashed var(--border); border-radius:14px; padding:38px 20px; text-align:center; cursor:pointer; transition:.15s;}
.drop:hover, .drop.drag{border-color:var(--accent-a); background:rgba(109,44,240,0.06);}
.drop .di{width:44px; height:44px; margin:0 auto 14px; border-radius:12px; background:var(--surface-2); display:flex; align-items:center; justify-content:center; color:var(--accent-b);}
.drop p{font-weight:600; font-size:14.5px; margin-bottom:4px;}
.drop span{color:var(--text-dim); font-size:12.5px;}

.stage{display:none; gap:20px;}
.stage.active{display:grid; grid-template-columns:1fr 1fr; align-items:stretch;}
@media (max-width:640px){ .stage.active{grid-template-columns:1fr;} }
.viewer{background:#000; border-radius:14px; overflow:hidden; position:relative; min-height:260px; border:1px solid var(--border);}
.viewer canvas{display:block; width:100%; height:100%;}
.viewer .vtag{position:absolute; top:10px; left:10px; font-size:11px; font-weight:700; color:var(--text-dim); background:rgba(0,0,0,0.5); padding:4px 9px; border-radius:999px;}

.panel{display:flex; flex-direction:column; justify-content:center; gap:14px;}
.file-row{display:flex; align-items:center; gap:10px; font-size:13.5px; color:var(--text-dim);}
.file-row b{color:var(--text); font-weight:600;}
.scale-row{display:flex; align-items:center; gap:10px; font-size:13px; color:var(--text-dim); flex-wrap:wrap;}
.scale-row input{width:90px; background:var(--surface-2); border:1px solid var(--border); border-radius:8px; color:var(--text); padding:7px 10px; font-family:inherit; font-size:13px;}
.scale-row .hint{font-size:11.5px; color:var(--text-dim); opacity:.8;}

.btn{border:none; border-radius:11px; padding:13px 18px; font-family:inherit; font-size:14px; font-weight:700; cursor:pointer; transition:.15s; display:flex; align-items:center; justify-content:center; gap:8px;}
.btn-primary{background:var(--gradient); color:#fff;}
.btn-primary:hover{filter:brightness(1.08);}
.btn-primary:disabled{opacity:.5; cursor:not-allowed;}
.btn-ghost{background:var(--surface-2); color:var(--text); border:1px solid var(--border);}
.btn-ghost:hover{border-color:var(--accent-a);}
.btn-row{display:flex; gap:10px; flex-wrap:wrap;}
.btn-row .btn{flex:1; min-width:120px;}

.status{font-size:12.5px; color:var(--text-dim); min-height:18px;}
.status.err{color:var(--err);}
.status.ok{color:var(--ok);}

.success-cta{margin-top:2px; padding:16px; border-radius:14px; background:linear-gradient(135deg, rgba(109,44,240,0.14), rgba(198,58,150,0.10)); border:1px solid rgba(139,107,245,0.25);}
.success-cta .sc-title{font-size:14px; font-weight:700; margin-bottom:6px;}
.success-cta .sc-text{font-size:12.5px; color:var(--text-dim); margin-bottom:12px;}
.success-cta .sc-label{display:block; font-size:11px; font-weight:700; color:var(--accent-b); text-transform:uppercase; letter-spacing:.03em; margin-bottom:8px;}
.success-cta .sc-btn{display:inline-flex; text-decoration:none; padding:10px 18px; font-size:13px;}
.reset-link{font-size:12.5px; color:var(--text-dim); text-decoration:underline; cursor:pointer; background:none; border:none; font-family:inherit; padding:0; text-align:left;}

.note{margin-top:16px; font-size:12px; color:var(--text-dim); background:var(--surface-2); border:1px solid var(--border); border-radius:10px; padding:11px 14px;}

.privacy{display:flex; align-items:center; justify-content:center; gap:8px; margin:22px 0 6px; font-size:12.5px; color:var(--text-dim);}
.privacy svg{color:var(--ok); flex-shrink:0;}

.related{display:flex; flex-wrap:wrap; gap:8px; justify-content:center; margin:26px 0 0;}
.related a{font-size:12.5px; color:var(--text-dim); text-decoration:none; padding:7px 13px; border:1px solid var(--border); border-radius:999px; transition:.15s;}
.related a:hover{color:var(--text); border-color:var(--accent-a);}

.ctabox{margin:56px 0; background:linear-gradient(135deg, rgba(109,44,240,0.14), rgba(198,58,150,0.10));
  border:1px solid rgba(139,107,245,0.25); border-radius:20px; padding:32px; text-align:center;}
.ctabox h2{font-size:21px; font-weight:800; margin-bottom:8px; letter-spacing:-0.01em;}
.ctabox p{color:var(--text-dim); font-size:14px; max-width:440px; margin:0 auto 20px;}
.ctabox a.btn-primary{display:inline-flex; text-decoration:none; padding:13px 26px;}

.faq{margin:50px 0;}
.faq h2{font-size:22px; font-weight:800; margin-bottom:18px; letter-spacing:-0.01em;}
.qa{border-bottom:1px solid var(--border); padding:16px 0;}
.qa h3{font-size:15px; font-weight:700; margin-bottom:7px;}
.qa p{font-size:13.5px; color:var(--text-dim);}

footer{border-top:1px solid var(--border); padding:26px 0 50px; text-align:center; color:var(--text-dim); font-size:12.5px;}
footer a{color:var(--text-dim); text-decoration:underline;}