@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(359deg)}}@keyframes shimmer{0%{background-position:-200% 0}to{background-position:200% 0}}.sensor-card{width:100%;height:100%;box-sizing:border-box;font-family:Segoe UI,Roboto,sans-serif;background:#fff;border-radius:20px;padding:16px 20px 12px;display:flex;flex-direction:column;gap:12px;box-shadow:0 4px 20px #0000000f;border:1px solid #DFE1E6;transition:box-shadow .2s,transform .2s}.sensor-card:hover{box-shadow:0 8px 30px #0000001a;transform:translateY(-2px)}.header{display:flex;justify-content:space-between;align-items:center}.title{font-size:22px;font-weight:800;color:#2c3e50}.detail-btn{font-size:13px;font-weight:600;color:#90a4ae;cursor:pointer;display:flex;align-items:center;gap:2px}.detail-btn:hover{color:#7f8c8d}.body{display:flex;flex-direction:row;align-items:stretch;flex:1}.col{display:flex;flex-direction:column;align-items:center;justify-content:flex-start;flex:1;gap:4px;padding-top:8px}.col-label{font-size:10px;font-weight:700;letter-spacing:.8px;text-transform:uppercase;display:flex;align-items:center;gap:4px;margin-bottom:6px}.divider{width:1px;height:80px;background:#ecf0f1;flex-shrink:0}.col-do .col-label{color:#2196f3}.do-value{font-size:26px;font-weight:900;color:#2196f3;line-height:1.1}.do-unit{font-size:13px;font-weight:600}.sat-value{font-size:14px;font-weight:700;color:#00acc1}.col-temp .col-label{color:#ef5350}.temp-value{font-size:26px;font-weight:900;color:#ef5350;line-height:1.1}.col-air .col-label{color:#90a4ae;margin-bottom:6px}.fans-grid{display:grid;grid-template-columns:1fr 1fr;gap:6px 10px;justify-items:center;align-items:center}.fan-item{display:flex;flex-direction:column;align-items:center;gap:2px}.fan-icon{font-size:26px}.fan-label{font-size:9px;font-weight:700}.footer{text-align:center;font-size:11px;color:#bdc3c7;font-weight:500;display:flex;align-items:center;justify-content:center;gap:6px;border-top:1px solid #ECF0F1;padding-top:8px;cursor:pointer}.footer:hover{color:#90a4ae}.loading-screen{display:flex;flex-direction:column;justify-content:center;align-items:center;min-height:100vh;background:linear-gradient(135deg,#00bfa5,#00897b);color:#fff;padding:2rem}.loading-container{text-align:center}.loading-container>p{font-size:1.5rem;font-weight:700;margin-top:1rem}.loading-spinner{width:48px;height:48px;border:4px solid rgba(255,255,255,.3);border-top-color:#fff;border-radius:50%;animation:spin 1s linear infinite;margin:0 auto}@media (max-width: 480px){.sensor-card{border-radius:16px;padding:14px 16px 10px}.sensor-card .title{font-size:18px}.sensor-card .do-value,.sensor-card .temp-value{font-size:22px}}