*{margin:0;padding:0;box-sizing:border-box;}
body{font-family:"Microsoft YaHei","PingFang SC",sans-serif;background:#030b18;color:#e6f2ff;overflow:hidden;}
.num{font-family:"DIN Alternate","Bahnschrift",sans-serif;font-weight:700;}

:root{
  --bg:#04102a; --bg2:#0a1f3c;
  --line:rgba(0,170,255,.25); --line2:rgba(0,170,255,.15);
  --pri:#00d4ff; --pri2:#0080ff;
  --accent:#4ade80; --warn:#fbbf24; --danger:#ef4444;
  --text:#eaf6ff; --muted:#7fb7e8;
}

#page-screen{
  height:100vh;
  display:flex; flex-direction:column; overflow:hidden;
  background:radial-gradient(1200px 600px at 30% -10%, rgba(0,150,255,.10), transparent 60%), var(--bg);
}
.screen-status{display:flex;align-items:center;justify-content:space-between;padding:8px 16px;border-bottom:1px solid var(--line2);font-size:12px;color:var(--muted);background:rgba(3,11,24,.5);flex-wrap:wrap;gap:6px;}
.ss-left{display:flex;align-items:center;gap:12px;flex-wrap:wrap;}
.ss-dot{display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--accent);box-shadow:0 0 8px var(--accent);margin-right:4px;animation:blink 1.6s infinite;}
.ss-title{font-size:18px;font-weight:700;color:var(--text);letter-spacing:3px;margin:0 10px;}
.ss-right{display:flex;align-items:center;gap:14px;flex-wrap:wrap;}
.ev{display:inline-block;padding:2px 10px;border-radius:9px;font-size:11px;background:rgba(74,222,128,.12);color:var(--accent);border:1px solid rgba(74,222,128,.3);}
.ev.warn{background:rgba(251,191,36,.12);color:var(--warn);border-color:rgba(251,191,36,.3);}
.ev.off{background:rgba(239,68,68,.12);color:var(--danger);border-color:rgba(239,68,68,.3);}
@keyframes blink{50%{opacity:.3;}}

.ov-row{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;padding:10px 14px 0;flex:none;}
@media (max-width:900px){.ov-row{grid-template-columns:repeat(2,1fr);}}
.ov-card{display:flex;align-items:center;gap:12px;padding:12px 14px;border-radius:8px;background:linear-gradient(180deg, rgba(8,26,48,.85), rgba(5,18,36,.9));border:1px solid var(--line);box-shadow:0 6px 24px rgba(0,0,0,.3);}
.ov-ico{width:42px;height:42px;border-radius:9px;flex:none;background:rgba(0,140,255,.14);border:1px solid var(--line);display:flex;align-items:center;justify-content:center;font-size:20px;}
.ov-txt .l{font-size:11px;color:var(--muted);}
.ov-txt .v{font-size:19px;font-weight:700;color:var(--pri);margin-top:2px;}
.ov-txt .v.red{color:var(--danger);}
.ov-txt .v.green{color:var(--accent);}
.ov-txt .v small{font-size:11px;color:var(--muted);font-weight:400;margin-left:2px;}

.screen-main{flex:1;min-height:0;display:grid;grid-template-columns:1fr 1fr 1.05fr;gap:10px;padding:10px 14px 4px;overflow:hidden;}
@media (max-width:1280px){.screen-main{grid-template-columns:1fr;overflow:auto;}}
.card{background:linear-gradient(180deg, rgba(8,26,48,.85), rgba(5,18,36,.9));border:1px solid var(--line);border-radius:8px;padding:12px 14px;box-shadow:0 6px 24px rgba(0,0,0,.3);}
.card-title{font-size:13px;font-weight:700;color:var(--text);margin-bottom:10px;display:flex;align-items:center;gap:6px;border-bottom:1px solid var(--line2);padding-bottom:7px;}
.card-title::before{content:"";width:3px;height:13px;background:var(--pri);border-radius:2px;}
.card-title small{font-weight:400;color:var(--muted);font-size:11px;margin-left:auto;}
.live{font-size:10px;color:var(--accent);display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--accent);box-shadow:0 0 6px var(--accent);margin-right:4px;vertical-align:middle;animation:blink 1.6s infinite;}
.live.warn{background:var(--warn);box-shadow:0 0 6px var(--warn);}
.live.off{background:var(--danger);box-shadow:0 0 6px var(--danger);}
.main-col{display:flex;flex-direction:column;min-height:0;overflow:hidden;}
.st-row{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin:6px 0;flex:none;}
.st-box{background:rgba(0,140,255,.07);border:1px solid var(--line2);border-radius:6px;padding:6px 4px;text-align:center;}
.st-box .l{font-size:10px;color:var(--muted);}
.st-box .v{font-size:13px;font-weight:700;margin-top:2px;}
.st-box .v.ok{color:var(--accent);}
.st-box .v.warn{color:var(--warn);}
.st-box .v.num{color:var(--text);font-family:"Consolas",monospace;}

.core-params{display:grid;grid-template-columns:1fr 1fr;gap:3px 14px;flex:none;margin:2px 0 4px;}
.cp-item{display:flex;align-items:center;gap:6px;font-size:11px;padding:2px 0;}
.cp-item .ci{color:var(--pri);width:14px;text-align:center;flex:none;font-size:12px;}
.cp-item .cl{color:var(--muted);}
.cp-item .cv{margin-left:auto;color:var(--text);font-weight:600;font-family:"Consolas",monospace;font-size:11px;}
.sub-t{font-size:11px;color:var(--muted);margin:4px 0 2px;font-weight:600;display:flex;justify-content:space-between;}
.sub-t span{color:#5f89b8;font-weight:400;font-size:10px;}

.tbar-wrap{display:flex;flex-direction:column;gap:5px;margin-top:6px;flex:1;min-height:0;overflow:auto;}
.tbar{display:flex;align-items:center;gap:8px;font-size:10.5px;}
.tbar .lb{width:44px;color:var(--muted);flex:none;text-align:right;}
.tbar .track{flex:1;height:9px;border-radius:5px;background:rgba(0,140,255,.10);overflow:hidden;position:relative;}
.tbar .fill{height:100%;border-radius:5px;background:linear-gradient(90deg,#00a8ff,#00d4ff);}
.tbar.hot .fill{background:linear-gradient(90deg,#ff8a00,#ff5a5f);}
.tbar.cat .fill{background:linear-gradient(90deg,#8b5cf6,#c084fc);}
.tbar .val{width:40px;color:var(--text);font-family:"Consolas",monospace;flex:none;font-size:10.5px;}

.gas-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px;}
.gcard{background:rgba(0,140,255,.07);border:1px solid var(--line2);border-radius:6px;padding:9px 10px;}
.gcard .gname{font-size:11.5px;color:var(--muted);display:flex;justify-content:space-between;align-items:center;}
.gcard .gval{font-size:20px;font-weight:700;color:var(--pri);margin-top:3px;}
.gcard .gval small{font-size:11px;color:var(--muted);font-weight:400;}
.gcard .glim{font-size:10px;color:#5f89b8;margin-top:3px;font-family:"Consolas",monospace;}
.gcard.over{border-color:rgba(239,68,68,.6);background:rgba(239,68,68,.10);}
.gcard.over .gval{color:var(--danger);}
.gtag{font-size:9.5px;padding:1px 6px;border-radius:7px;}
.gtag.ok{background:rgba(74,222,128,.15);color:var(--accent);}
.gtag.over{background:rgba(239,68,68,.18);color:var(--danger);}
.main-gas{align-content:start;}
.gas-trend{flex:1;min-height:0;margin-top:4px;}
.gas-trend svg{display:block;width:100%;height:100%;}
.trend-voc{flex:none;height:190px;margin-top:6px;}

.screen-bottom{flex:none;height:212px;padding:0 14px 12px;overflow:hidden;}
.btab-wrap{margin-left:auto;display:flex;gap:4px;}
.btab{padding:4px 11px;border-radius:6px;cursor:pointer;font-size:11.5px;color:var(--muted);border:1px solid transparent;user-select:none;transition:.15s;}
.btab:hover{color:var(--text);}
.btab.active{color:var(--pri);background:rgba(0,170,255,.12);border-color:var(--line);}
.btab-body{flex:1;min-height:0;overflow:auto;margin-top:8px;}
.btab-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;height:100%;}
.btab-grid .trend-card{height:100%;display:flex;flex-direction:column;min-height:0;}
.trend-card{background:linear-gradient(180deg, rgba(8,26,48,.85), rgba(5,18,36,.9));border:1px solid var(--line);border-radius:8px;padding:12px 14px;}
.trend-card svg{flex:1;min-height:0;height:auto;display:block;width:100%;}

.at{width:100%;border-collapse:collapse;font-size:11px;}
.at th{background:rgba(0,140,255,.10);color:var(--muted);text-align:left;padding:6px 8px;border-bottom:1px solid var(--line);font-weight:600;white-space:nowrap;}
.at td{padding:5px 8px;border-bottom:1px solid rgba(0,180,255,.10);color:var(--text);font-family:"Consolas",monospace;white-space:nowrap;}

.theme-btn{padding:5px 11px;border-radius:14px;cursor:pointer;font-size:12px;background:rgba(0,170,255,.14);border:1px solid rgba(0,212,255,.4);color:#7fc8ff;transition:.18s;user-select:none;}
.theme-btn:hover{filter:brightness(1.2);}

.grid-line{stroke:rgba(120,160,200,.16);stroke-width:1;}
.axis-line{stroke:rgba(120,160,200,.5);stroke-width:1;}
.axis-text{fill:#7fa8d0;font-family:"Consolas",monospace;}
.limit-line{stroke:#ff5a5f;stroke-width:1.2;stroke-dasharray:5 3;}
.limit-label{font-size:9px;fill:#ff9a9e;}

body.theme-light{
  --bg:#eef4fb; --line:rgba(0,90,170,.22); --line2:rgba(0,90,170,.12);
  --pri:#0066cc; --accent:#16a34a; --warn:#d97706; --danger:#dc2626;
  --text:#1a2740; --muted:#5a7090; background:#eef4fb; color:#1a2740;
}
body.theme-light #page-screen{background:radial-gradient(1200px 600px at 30% -10%, rgba(0,120,255,.10), transparent 60%), var(--bg);}
body.theme-light .card,body.theme-light .ov-card,body.theme-light .trend-card{background:linear-gradient(180deg,#ffffff,#f3f7fd);box-shadow:0 4px 16px rgba(30,60,110,.10);}
body.theme-light .screen-status{background:rgba(255,255,255,.75);}
body.theme-light .st-box,body.theme-light .gcard{background:rgba(0,110,200,.07);}
body.theme-light .grid-line{stroke:rgba(60,90,130,.14);}
body.theme-light .axis-text{fill:#6b7c93;}

body.theme-green{
  --bg:#0a2418; --line:rgba(0,230,160,.25); --line2:rgba(0,230,160,.14);
  --pri:#00e0a0; --accent:#4ade80; --text:#e8fff6; --muted:#7fd8b8;
  background:#0a2418; color:#e8fff6;
}
body.theme-green #page-screen{background:radial-gradient(1200px 600px at 30% -10%, rgba(0,224,160,.10), transparent 60%), var(--bg);}
body.theme-green .tbar .fill{background:linear-gradient(90deg,#00b877,#00e0a0);}

::-webkit-scrollbar{width:5px;height:5px;}
::-webkit-scrollbar-thumb{background:rgba(0,140,255,.4);border-radius:4px;}