body { background:#f4f6f9; }
.bk-wrapper { display:flex; justify-content:center; padding:40px 20px; }
.bk-card { width:100%; max-width:700px; background:#fff; border-radius:20px; padding:40px; box-shadow:0 10px 30px rgba(0,0,0,0.1); }
.bk-logo { text-align:center; font-size:28px; font-weight:bold; margin-bottom:30px; background:linear-gradient(90deg,#2d7dff,#ff6b00); -webkit-background-clip:text; -webkit-text-fill-color:transparent; }
h3 { color:#ff6b00; margin-top:10px; }
input { width:100%; padding:14px; margin-bottom:16px; border-radius:12px; border:1px solid #ddd; font-size:15px; }
button { width:100%; padding:18px; border:none; border-radius:14px; background:linear-gradient(90deg,#2d7dff,#ff6b00); color:#fff; font-size:16px; font-weight:bold; cursor:pointer; }
.bk-separator { height:40px; }