*{
  margin:0;
  padding:0;
  box-sizing:border-box;
  font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
}
body{
  background:#f6f7fb;
  min-height:100vh;
  display:grid;
  place-items:center;
  padding:20px;
}
.card{
  background:#fff;
  border-radius:24px;
  box-shadow:0 10px 30px rgba(0,0,0,0.08);
  width:100%;
  max-width:500px;
  padding:32px;
  text-align:center;
}
h1{
  font-size:26px;
  margin-bottom:8px;
}
.desc{
  color:#666;
  margin-bottom:24px;
}
input,button{
  width:100%;
  border-radius:12px;
  border:1px solid #ddd;
}
input{
  padding:14px;
  margin-bottom:12px;
  font-size:15px;
}
button{
  padding:14px;
  background:#2d5cff;
  color:white;
  font-weight:500;
  border:none;
  cursor:pointer;
  margin-top:6px;
}
button:hover{
  background:#1a4ae0;
}
#uploadArea{
  border:2px dashed #ccc;
  padding:28px;
  border-radius:16px;
  cursor:pointer;
  margin-bottom:16px;
}
#uploadArea:hover{
  border-color:#2d5cff;
}
.modal{
  position:fixed;
  top:0;
  left:0;
  width:100%;
  height:100%;
  background:rgba(0,0,0,0.5);
  display:none;
  align-items:center;
  justify-content:center;
  padding:20px;
}
.modalContent{
  background:#fff;
  border-radius:20px;
  padding:24px;
  max-width:400px;
  width:100%;
  text-align:center;
}
.modalTitle{
  font-size:20px;
  font-weight:600;
  margin-bottom:12px;
}
.modalUrl{
  padding:10px;
  background:#f1f3f5;
  border-radius:8px;
  margin:10px 0;
  word-break:break-all;
}
.footer{
  margin-top:30px;
  font-size:13px;
  color:#999;
  line-height:1.5;
}
.footer a{
  color:#2d5cff;
  text-decoration:none;
}