.szdd-wrapper{max-width:1200px;margin:35px auto;padding:18px;font-family:Arial,sans-serif;color:#1f2f3f}
.szdd-card{background:#fff;border-radius:24px;padding:28px;box-shadow:0 14px 42px rgba(0,0,0,.09)}
.szdd-access{max-width:560px;margin:auto;text-align:center}
.szdd-badge{display:inline-block;background:#eef6ff;color:#1f2f3f;border:1px solid #cfe0f7;border-radius:999px;padding:6px 12px;font-size:12px;font-weight:700}
.szdd-card h2{font-size:31px;margin:10px 0;color:#1f2f3f}
.szdd-card h3{margin:8px 0 12px;color:#1f2f3f}
.szdd-card p{color:#5f6872}
.szdd-access input{display:block;width:100%;max-width:430px;margin:9px auto;padding:14px;border:1px solid #dce1e7;border-radius:14px;box-sizing:border-box}
button,.szdd-book{background:#1f2f3f;color:#fff;border:none;border-radius:13px;padding:13px 18px;font-weight:700;cursor:pointer;text-decoration:none;display:inline-block}
button:hover,.szdd-book:hover{opacity:.9;color:#fff}
#szdd-message{font-weight:700;color:#b00020}
.szdd-upload{margin:18px 0;padding:14px;border:1px dashed #ccd6e0;border-radius:16px;background:#fbfcfd}
.szdd-upload label{display:block;font-weight:700;margin-bottom:8px}
.szdd-layout{display:grid;grid-template-columns:1fr 340px;gap:22px;align-items:start}
.szdd-preview-wrap{background:#f4f6f8;border-radius:22px;overflow:hidden;position:relative;text-align:center;min-height:420px}
#szdd-canvas{max-width:100%;height:auto;display:block;margin:auto;cursor:grab;touch-action:none}
#szdd-canvas:active{cursor:grabbing}
.szdd-tip{font-size:13px;color:#617080;padding:10px 12px;background:#fff;border-top:1px solid #e5e9ee}
.szdd-panel{border:1px solid #e5e9ee;border-radius:20px;padding:18px;background:#fbfcfd}
.szdd-panel label{display:block;margin:13px 0 7px;font-weight:700;font-size:13px}
.szdd-panel input[type=range],.szdd-panel select{width:100%;box-sizing:border-box}
.szdd-panel input[type=range]{accent-color:#1f2f3f}
.szdd-panel select{padding:11px;border:1px solid #dce1e7;border-radius:12px;background:#fff}
.szdd-row{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:14px}
.szdd-row button,#szdd-reset-tooth{background:#34465a;width:100%;font-size:12px}
hr{border:none;border-top:1px solid #e5e9ee;margin:18px 0}
.szdd-help,.szdd-note{font-size:13px}
.szdd-tooth-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:6px;margin:10px 0}
.szdd-tooth-grid button{padding:8px 0;border-radius:10px;background:#e9eef4;color:#1f2f3f;font-size:12px}
.szdd-tooth-grid button.active{background:#1f2f3f;color:#fff}
.szdd-selected{background:#fff;border:1px solid #dce1e7;border-radius:12px;padding:10px;font-weight:700;margin:10px 0}
.szdd-actions{display:flex;gap:10px;justify-content:center;align-items:center;margin-top:20px}
.szdd-note{text-align:center;margin-top:14px}
@media(max-width:900px){.szdd-layout{grid-template-columns:1fr}.szdd-actions{flex-direction:column}.szdd-actions button,.szdd-actions a{width:100%;text-align:center}.szdd-card{padding:18px}.szdd-card h2{font-size:25px}}