:root{--bg: #05070d;--panel: rgba(18, 22, 32, .72);--panel-border: rgba(255, 255, 255, .1);--text: #eef2f7;--muted: #9aa4b2;--accent: #4da3ff;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif}*{box-sizing:border-box}html,body{margin:0;height:100%;background:var(--bg);color:var(--text);overflow:hidden}#cesiumContainer{position:fixed;inset:0;width:100%;height:100%}.cesium-widget-credits,.cesium-viewer-bottom{display:none!important}.panel{position:fixed;z-index:10;background:var(--panel);border:1px solid var(--panel-border);border-radius:16px;backdrop-filter:blur(18px) saturate(140%);-webkit-backdrop-filter:blur(18px) saturate(140%);box-shadow:0 10px 40px #00000073}.hidden{display:none!important}#topbar{position:fixed;top:0;left:0;right:0;z-index:10;display:flex;align-items:center;justify-content:space-between;padding:14px 20px;pointer-events:none;background:linear-gradient(to bottom,#0000008c,#0000)}#topbar .title{display:flex;align-items:center;gap:10px;font-weight:600;font-size:16px;letter-spacing:.2px}#topbar .dot{width:10px;height:10px;border-radius:50%;background:radial-gradient(circle at 30% 30%,#7ee0ff,var(--accent));box-shadow:0 0 12px var(--accent)}.status{font-size:12px;color:var(--muted)}.legend{left:16px;bottom:16px;padding:12px 14px;min-width:180px}.legend h4{margin:0 0 8px;font-size:12px;font-weight:600;color:var(--muted);text-transform:uppercase;letter-spacing:.6px}.legend .row{display:flex;align-items:center;gap:8px;font-size:12.5px;margin:4px 0}.legend .sw{width:14px;height:14px;border-radius:4px;flex:none}.legend .grad-bar{height:12px;border-radius:6px}.legend .grad-scale{display:flex;justify-content:space-between;font-size:10.5px;color:var(--muted);margin-top:4px}.controls{right:16px;top:56px;width:234px;padding:14px 16px}.ctrl-section+.ctrl-section{margin-top:14px;padding-top:14px;border-top:1px solid var(--panel-border)}.ctrl-head{display:flex;align-items:center;justify-content:space-between;font-size:13.5px;font-weight:600}.ctrl-row{display:flex;align-items:center;gap:10px;margin-top:10px}.ctrl-label{font-size:11.5px;color:var(--muted);width:52px;flex:none}.ctrl-row input[type=range]{flex:1 1 0;min-width:0;width:100%}.ctrl-select{flex:1 1 0;min-width:0;font-size:12px;color:var(--text);background:#ffffff14;border:1px solid var(--panel-border);border-radius:8px;padding:4px 8px;cursor:pointer;outline:none;appearance:none;-webkit-appearance:none}.ctrl-select:hover{background:#ffffff24}.ctrl-select option{background:#12161f;color:var(--text)}.switch{position:relative;display:inline-block;width:40px;height:24px}.switch input{opacity:0;width:0;height:0}.slider-sw{position:absolute;inset:0;cursor:pointer;background:#ffffff29;border-radius:24px;transition:.2s}.slider-sw:before{content:"";position:absolute;height:18px;width:18px;left:3px;bottom:3px;background:#fff;border-radius:50%;transition:.2s}.switch input:checked+.slider-sw{background:var(--accent)}.switch input:checked+.slider-sw:before{transform:translate(16px)}.switch input:disabled+.slider-sw{opacity:.4;cursor:default}input[type=range]{-webkit-appearance:none;appearance:none;height:4px;border-radius:2px;background:#ffffff2e;outline:none}input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;width:14px;height:14px;border-radius:50%;background:var(--accent);cursor:pointer;box-shadow:0 1px 4px #00000080}input[type=range]::-moz-range-thumb{width:14px;height:14px;border:none;border-radius:50%;background:var(--accent);cursor:pointer}input[type=range]:disabled{opacity:.4}.ctrl-section.about{padding-top:13px}.about>summary{cursor:pointer;list-style:none}.about>summary::-webkit-details-marker{display:none}.about>summary .chev{color:var(--muted);transition:transform .18s;font-size:16px;line-height:1}.about[open]>summary .chev{transform:rotate(90deg)}.about-body{margin-top:10px}.about-body p{font-size:11.5px;line-height:1.5;color:var(--muted);margin:0 0 9px}.about-body p:last-child{margin-bottom:2px}.about-body b{color:var(--text);font-weight:600}.wind-legend{margin-top:12px}.wind-legend-title{font-size:10.5px;color:var(--muted);text-transform:uppercase;letter-spacing:.5px;margin-bottom:5px}.wind-legend-bar{height:8px;border-radius:4px}.wind-legend-scale{display:flex;justify-content:space-between;font-size:10px;color:var(--muted);margin-top:3px}.card{right:16px;bottom:16px;width:300px;padding:0;display:flex;flex-direction:column;max-height:min(72vh,720px)}.card-head{padding:18px 18px 14px;flex:none}.card-body{padding:0 18px 16px;overflow-y:auto;flex:1 1 auto}.card-body::-webkit-scrollbar{width:7px}.card-body::-webkit-scrollbar-thumb{background:#ffffff29;border-radius:4px}.card .place{font-size:15px;font-weight:600;margin-bottom:2px}.card .coords{font-size:11.5px;color:var(--muted);margin-bottom:14px}.card .aqi-hero{display:flex;align-items:baseline;gap:10px;margin-bottom:4px}.card .aqi-num{font-size:44px;font-weight:700;line-height:1}.card .aqi-cat{font-size:14px;font-weight:600}.card .aqi-sub{font-size:12px;color:var(--muted);margin-bottom:14px}.card .trend{margin:-4px 0 14px}.card .trend-head{display:flex;justify-content:space-between;font-size:10px;letter-spacing:.04em;text-transform:uppercase;color:var(--muted);margin-bottom:3px}.card .trend-range{font-variant-numeric:tabular-nums}.card .trend-svg{width:100%;height:34px;display:block;background:#ffffff08;border-radius:8px}.card .pollutants{display:grid;grid-template-columns:1fr 1fr;gap:8px}.card .pollutant{position:relative;background:#ffffff0a;border-radius:10px;padding:8px 10px}.poll-info{position:absolute;top:6px;right:6px;width:17px;height:17px;border-radius:50%;padding:0;border:none;cursor:pointer;font:italic 700 11px/17px Georgia,Times New Roman,serif;text-align:center;background:#ffffff1f;color:var(--muted);transition:background .15s,color .15s}.poll-info:hover{background:#ffffff3d;color:var(--text)}.info-pop{position:fixed;z-index:30;width:250px;padding:12px 14px;background:#141822f7;border:1px solid var(--panel-border);border-radius:12px;box-shadow:0 12px 44px #0000008c;backdrop-filter:blur(18px) saturate(140%);-webkit-backdrop-filter:blur(18px) saturate(140%);opacity:0;visibility:hidden;transform:translateY(4px);transition:opacity .12s,transform .12s,visibility .12s;pointer-events:none}.info-pop.show{opacity:1;visibility:visible;transform:none;pointer-events:auto}.info-pop .ip-title{font-size:12.5px;font-weight:600;margin-bottom:5px}.info-pop .ip-body{font-size:12px;color:var(--text);line-height:1.42}.info-pop .ip-src{display:inline-block;margin-top:9px;font-size:11px;color:var(--accent);text-decoration:none}.info-pop .ip-src:hover{text-decoration:underline}.card .pollutant .k{font-size:10.5px;color:var(--muted);text-transform:uppercase;letter-spacing:.4px}.card .pollutant .v{font-size:15px;font-weight:600}.card .close{position:absolute;top:12px;right:12px;width:26px;height:26px;border-radius:50%;border:none;cursor:pointer;background:#ffffff14;color:var(--text);font-size:15px;line-height:1;pointer-events:auto}.card .close:hover{background:#ffffff29}.card .loading{font-size:13px;color:var(--muted);padding:8px 0}.card .card-section{font-size:10px;color:var(--muted);text-transform:uppercase;letter-spacing:.5px;margin:14px 0 9px;padding-top:13px;border-top:1px solid var(--panel-border)}.card .src-list{display:flex;flex-direction:column;gap:2px}.card .src-row{display:flex;align-items:center;gap:9px;padding:5px 0}.card .src-ic{font-size:12px;width:16px;flex:none;text-align:center;opacity:.9}.card .src-ic.info-trigger{cursor:help}.card .src-ic.info-trigger:hover{opacity:1;transform:scale(1.12)}.card .src-link{color:var(--text);text-decoration:underline;text-decoration-color:#ffffff52;text-decoration-thickness:1px;text-underline-offset:2px;transition:text-decoration-color .15s}.card .src-link:hover{text-decoration-color:var(--text)}.card .src-org{white-space:nowrap}.card .src-label{flex:1;font-size:12.5px;display:flex;flex-direction:column;line-height:1.25}.card .src-note{font-size:10px;color:var(--muted)}.card .src-aqi{font-size:16px;font-weight:700;flex:none;min-width:34px;text-align:right}.gear{position:fixed;z-index:12;top:12px;right:16px;width:40px;height:40px;border-radius:12px;display:none;align-items:center;justify-content:center;font-size:19px;line-height:1;cursor:pointer;color:var(--text);background:var(--panel);border:1px solid var(--panel-border);backdrop-filter:blur(18px) saturate(140%);-webkit-backdrop-filter:blur(18px) saturate(140%)}.gear:hover{background:#ffffff1f}.credit{position:fixed;z-index:9;bottom:6px;left:50%;transform:translate(-50%);max-width:92vw;text-align:center;font-size:10px;color:var(--muted);pointer-events:none;text-shadow:0 1px 3px rgba(0,0,0,.75)}@media(max-width:560px){.status{display:none}.gear{display:flex}.controls{left:16px;right:16px;top:60px;width:auto;display:none}.controls.open{display:block}.card{inset:auto 16px 16px;width:auto;max-height:56vh}.legend{display:none}.credit{font-size:9px;bottom:3px}}