:root{font-family:Inter,"Microsoft YaHei",system-ui,sans-serif;color:#e5edf5;background:#101923;color-scheme:dark}
*{box-sizing:border-box}body{margin:0}header{max-width:1180px;margin:auto;padding:32px 24px 22px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.eyebrow{font-size:12px;letter-spacing:2px;color:#77d5c2}h1{font-size:28px;margin:6px 0 0}h2{font-size:18px;margin:0 0 16px}.badge{border:1px solid #39505e;padding:8px 12px;border-radius:20px;font-size:12px;color:#a8bbca}
main{max-width:1180px;margin:auto;padding:0 24px 30px}.card{background:#192633;border:1px solid #2b3c4b;border-radius:16px;padding:22px}.login label{display:block;font-size:13px;margin-bottom:10px}.row{display:flex;gap:8px;flex-wrap:wrap;align-items:center;margin:10px 0}
input,textarea{background:#111c27;border:1px solid #3b4d5c;border-radius:8px;padding:11px 12px;font:inherit;color:inherit;min-width:0}input{flex:1}textarea{display:block;width:100%;margin:8px 0 12px;resize:vertical}button,.file{border:0;border-radius:8px;padding:11px 14px;background:#74d7c1;color:#102821;font:inherit;font-size:13px;font-weight:600;cursor:pointer}
button:hover{filter:brightness(1.08)}button:disabled{opacity:.5;cursor:wait}.secondary,.file{background:#293b4c;color:#e0e9f1}.danger{background:#883b43;color:#fff}.hint{font-size:12px;line-height:1.6;color:#9badbd;margin:10px 0 0}.statusbar{display:flex;flex-wrap:wrap;gap:12px;padding:18px 4px;color:#adbdca;font-size:13px}.statusbar span{border-left:3px solid #57798b;padding-left:8px}
.grid{display:grid;grid-template-columns:minmax(280px,.85fr) minmax(380px,1.15fr);gap:20px}.stack{display:flex;flex-direction:column;gap:20px}.section-heading{display:flex;justify-content:space-between;align-items:center;gap:8px;margin-bottom:12px}.section-heading h2{margin:0}.preview{min-height:430px;background:#101923;border-radius:12px;display:flex;justify-content:center;align-items:center;overflow:hidden;position:relative}
.preview img{max-width:100%;max-height:650px;object-fit:contain}.preview p{text-align:center;line-height:2;color:#9badbd;padding:20px}.preview small{font-size:12px}.file{display:inline-block}.file input{display:none}.result{font-size:13px;line-height:1.8;white-space:pre-wrap;border-top:1px solid #344555;padding-top:14px;margin-top:16px;max-height:330px;overflow:auto}.movegrid{display:flex;gap:8px;margin:16px 0}.movegrid button{font-size:22px;min-width:52px}
#notice{position:sticky;bottom:15px;margin-top:20px;border:1px solid #3c566a;border-radius:10px;background:#203345;padding:12px 16px;font-size:13px;white-space:pre-wrap}
@media(max-width:800px){.grid{grid-template-columns:1fr}header{padding-top:22px}.badge{display:none}.preview{min-height:300px}.card{padding:16px}main{padding:0 14px 20px}header{padding-left:16px}}