.bt-shell{max-width:1200px;margin:auto;color:#383047}.bt-shell>header{margin-bottom:24px}.bt-shell>header small{color:#a080b6;letter-spacing:2px;font-size:10px}.bt-shell h2{font-size:25px;margin:8px 0}.bt-shell>header p{font-size:13px;color:#8f8198}.bt-grid{display:grid;grid-template-columns:minmax(280px,400px) minmax(0,1fr);gap:20px;align-items:start}.bt-card{background:#fff;border:1px solid #e7dfee;border-radius:16px;padding:24px;box-sizing:border-box}.bt-card h3{margin:0 0 18px;color:#60477a}.bt-preview{height:300px;display:flex;align-items:center;justify-content:center;border:1px dashed #d9c7e6;border-radius:12px;background:#faf7fd;overflow:hidden;color:#9e8bab;text-align:center;padding:12px;box-sizing:border-box}.bt-preview img{max-width:100%;max-height:100%;object-fit:contain;border-radius:8px}.bt-picker{display:block;margin:16px 0;cursor:pointer}.bt-picker input{position:absolute;width:1px;height:1px;opacity:0}.bt-picker span{display:block;text-align:center;border:1px solid #d6c5e2;border-radius:8px;padding:11px;color:#674b80}.bt-picker:focus-within span{outline:2px solid #7a5ab0}.bt-notice{font-size:12px;line-height:1.7;color:#7f718b}.bt-upload button{display:block;width:100%;margin-top:12px}.bt-status{font-size:12px;color:#9b4f56;min-height:1.3em}.bt-result-head{display:flex;align-items:center;justify-content:space-between;gap:12px}.bt-result-head h3{margin:0}.bt-result-body{margin-top:18px;color:#66596f;line-height:1.75;font-size:14px}.bt-summary{background:#f7f0ff;border-radius:10px;padding:14px;color:#503b64}.bt-result-body section{border-top:1px solid #eee5f3;margin-top:18px;padding-top:8px}.bt-result-body h4{color:#7e5799;margin:10px 0}.bt-result-body ol{padding-left:22px}.bt-result-body li{margin:8px 0}@media(max-width:750px){.bt-grid{grid-template-columns:1fr}.bt-card{padding:18px}.bt-preview{height:250px}}