:root{--bg: #0f172a;--bg-soft: #1e293b;--card: #ffffff;--text: #e2e8f0;--text-strong: #f8fafc;--text-muted: #94a3b8;--primary: #3b82f6;--primary-hover: #2563eb;--success: #22c55e;--danger: #ef4444;--border: #e2e8f0;--radius: 14px;--shadow: 0 10px 30px rgba(2, 6, 23, .35)}*{box-sizing:border-box}body{margin:0;min-height:100vh;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;color:var(--text);background:linear-gradient(160deg,#0f172a,#1e293b 55%,#0f172a)}.app-header{text-align:center;padding:48px 16px 24px}.app-header h1{margin:0;font-size:2rem;color:var(--text-strong)}.app-header p{margin:8px 0 0;color:var(--text-muted);font-size:.95rem}.container{max-width:960px;margin:0 auto;padding:0 16px 48px}.tabs{display:flex;gap:8px;margin-bottom:20px;background:#ffffff0f;padding:6px;border-radius:12px}.tab-btn{flex:1;padding:12px;border:none;border-radius:8px;background:transparent;color:var(--text-muted);font-size:1rem;cursor:pointer;transition:all .2s}.tab-btn:hover{color:var(--text-strong)}.tab-btn.active{background:var(--primary);color:#fff;font-weight:600}.tab-panel{display:none}.tab-panel.active{display:block}.card{background:var(--card);color:#0f172a;border-radius:var(--radius);padding:24px;box-shadow:var(--shadow)}.card-head h2{margin:0;font-size:1.35rem}.hint{color:#64748b;font-size:.9rem;margin:6px 0 0}.hidden{display:none!important}.btn{padding:10px 20px;border:1px solid var(--border);border-radius:8px;background:#fff;color:#334155;font-size:.95rem;cursor:pointer;transition:all .2s}.btn:hover:not(:disabled){border-color:var(--primary);color:var(--primary)}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background:var(--primary);border-color:var(--primary);color:#fff}.btn-primary:hover:not(:disabled){background:var(--primary-hover);color:#fff}.drop-zone{margin-top:20px;border:2px dashed #cbd5e1;border-radius:var(--radius);padding:40px 20px;text-align:center;cursor:pointer;transition:all .2s}.drop-zone:hover,.drop-zone.dragover{border-color:var(--primary);background:#eff6ff}.dz-icon{font-size:3rem}.dz-title{font-size:1.05rem;color:#334155;margin:10px 0}.panel{margin-top:20px}.controls{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;padding:16px;background:#f8fafc;border-radius:10px}.control{display:flex;flex-direction:column;gap:8px;font-size:.9rem;color:#475569}.control span em{font-style:normal;color:var(--primary);font-weight:600}.control select,.control input[type=range]{width:100%}.control select{padding:8px;border:1px solid var(--border);border-radius:8px;background:#fff}.preview-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:16px}.preview-box{margin:0;border:1px solid var(--border);border-radius:10px;overflow:hidden}.preview-box figcaption{padding:10px 14px;background:#f1f5f9;font-weight:600;color:#334155}.img-wrap{min-height:180px;max-height:320px;display:flex;align-items:center;justify-content:center;background:repeating-conic-gradient(#f1f5f9,#f1f5f9 25%,#fff 0%,#fff 50%) 50% / 20px 20px;overflow:hidden}.img-wrap img{max-width:100%;max-height:320px;object-fit:contain}.meta{padding:8px 14px;font-size:.82rem;color:#64748b;background:#f8fafc;border-top:1px solid var(--border);word-break:break-all}.result-bar{margin-top:16px;display:flex;align-items:center;justify-content:space-between;gap:12px}.badge{display:inline-block;padding:8px 14px;border-radius:999px;font-weight:600;font-size:.9rem;background:#ecfdf5;color:#047857}.badge.negative{background:#fef2f2;color:#b91c1c}.device-list{margin-top:16px;display:flex;flex-direction:column;gap:10px}.device-list .placeholder{padding:16px;text-align:center;color:#94a3b8;background:#f8fafc;border-radius:10px}.device-item{display:flex;align-items:center;gap:10px;padding:12px 14px;border:1px solid var(--border);border-radius:10px;background:#f8fafc}.device-item .dot{width:10px;height:10px;border-radius:50%;flex-shrink:0}.device-item .dot.ok{background:var(--success)}.device-item .dot.warn{background:#f59e0b}.device-item .dot.err{background:var(--danger)}.device-item .d-info{flex:1;min-width:0}.device-item .d-name{font-weight:600;color:#1e293b;font-size:.92rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.device-item .d-detail{font-size:.78rem;color:#64748b;margin-top:2px}.device-item .d-tag{flex-shrink:0;font-size:.75rem;padding:4px 10px;border-radius:999px;background:#e2e8f0;color:#475569}.test-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:20px}.test-card{border:1px solid var(--border);border-radius:12px;padding:16px;background:#f8fafc}.test-card h3{margin:0 0 12px;font-size:1.05rem;color:#1e293b}.video-wrap{position:relative;width:100%;aspect-ratio:4 / 3;border-radius:10px;overflow:hidden;background:#0f172a;display:flex;align-items:center;justify-content:center}.video-wrap video{width:100%;height:100%;object-fit:cover;display:block}.cam-overlay{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;align-items:center;justify-content:center;text-align:center;color:#94a3b8;font-size:.9rem;padding:12px;background:#0f172abf}.cam-overlay.hidden{display:none}.cam-actions{display:flex;gap:8px;flex-wrap:wrap;margin-top:12px}.snapshot{margin-top:10px}.snapshot img{width:100%;border-radius:8px;border:1px solid var(--border)}.meter-wrap{margin:8px 0 12px}.meter-track{height:12px;border-radius:999px;background:#e2e8f0;overflow:hidden}.meter-fill{height:100%;width:0%;background:linear-gradient(90deg,var(--success),#facc15,var(--danger));transition:width 80ms linear}.meter-label{display:inline-block;margin-top:6px;font-size:.82rem;color:#64748b}@media (max-width: 800px){.controls,.preview-grid,.test-grid{grid-template-columns:1fr}}.app-footer{text-align:center;color:var(--text-muted);font-size:.82rem;padding:24px 16px 40px}.app-footer .beian{display:inline-block;margin-top:8px;color:var(--text-muted);text-decoration:none}.app-footer .beian:hover{color:var(--text-strong)}