:root{font-family:system-ui,"Microsoft YaHei",sans-serif;color:#f2f2f2;background:#191919;--accent:#ffad18;--muted:#a2a5aa}*{box-sizing:border-box}body{margin:0;display:flex}aside{width:218px;background:#141414;color:#ededed;min-height:100vh;padding:38px 25px;position:fixed;inset:0 auto 0 0}.brand{font-size:32px;font-weight:750;letter-spacing:3px}.brand span{color:#ffad18}.brand small{display:block;font-size:10px;letter-spacing:2px;font-weight:400;margin-top:12px}.nav{margin-top:65px;padding:15px;background:#3b301d;border-radius:8px;font-size:14px}.side-note{position:absolute;bottom:35px;font-size:12px;line-height:2;color:#a2a5aa}main{margin-left:218px;padding:40px 42px;max-width:1700px;width:calc(100% - 218px)}header{display:flex;justify-content:space-between;align-items:center;margin-bottom:32px}.eyebrow{font-size:10px;letter-spacing:2px;color:var(--muted);margin:0 0 9px}h1{font-size:30px;margin:0 0 12px;letter-spacing:1px}h2{font-size:18px;margin:0}h3{font-size:14px;margin-top:25px}.muted{color:var(--muted);font-size:13px}.tag{border:1px solid #3b3b3b;border-radius:30px;padding:7px 12px;font-size:12px;background:#292929;white-space:nowrap}.tag.ok{background:#15392c;color:#00d684}.tag.warn{background:#3b301d;color:#ffbd4a}.panel{background:#222222;border:1px solid #363636;border-radius:13px;padding:24px}.overview{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-bottom:24px}.overview article{padding:22px 25px;border:1px solid #363636;background:#222222;border-radius:12px}.overview span,.metrics span{font-size:12px;color:var(--muted)}.overview strong{display:block;font-size:32px;font-weight:600;margin-top:14px}.workspace{display:grid;grid-template-columns:300px 1fr;gap:22px}.section-title{display:flex;justify-content:space-between;align-items:center;gap:10px}.fleet input{width:100%;margin:20px 0}.device{width:100%;text-align:left;border:1px solid #3a3a3a;color:#f2f2f2;background:#222222;margin-bottom:10px;padding:16px;border-radius:9px}.device.selected{border-color:#ffad18;background:#342b1d}.device strong{display:block;font-size:14px}.device small{display:block;color:var(--muted);margin-top:7px}.metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:15px;margin:25px 0}.metrics article{padding:18px;background:#191919;border-radius:10px}.metrics strong{display:block;font-size:32px;margin:10px 0 0;font-weight:600}.metrics small{color:var(--muted);font-size:12px}.channels{display:grid;grid-template-columns:repeat(6,1fr);gap:8px}.channel{border:1px solid #3a3a3a;padding:12px 4px;text-align:center;border-radius:7px;font-size:12px}.channel.on{background:#15392c}.alarm{background:#3e2225;border-left:3px solid #ff4d55;padding:12px;margin:8px 0;color:#ff9298}.empty{padding:18px;background:#f7f8f2;color:var(--muted);font-size:13px;border-radius:8px}button{border:0;background:var(--accent);color:#191919;padding:11px 16px;border-radius:7px;cursor:pointer;font:inherit;font-size:13px}button:hover{filter:brightness(1.12)}button.secondary{background:#353027;color:var(--accent)}button.text{background:transparent;color:var(--accent);padding:0}.actions{display:flex;gap:8px;flex-wrap:wrap;margin-top:24px}input{border:1px solid #454545;border-radius:7px;padding:12px;font:inherit;font-size:14px;background:#191919;color:#f2f2f2}label{font-size:13px}form{display:flex;align-items:end;gap:15px;margin-top:20px}label input{display:block;margin-top:8px}#error{color:#ff9298;font-size:14px}#extra{margin-top:20px;font-size:13px;overflow:auto;max-height:360px}pre{white-space:pre-wrap;word-break:break-word;background:#191919;padding:15px}table{border-collapse:collapse;width:100%;font-size:12px}td,th{border-bottom:1px solid #393939;text-align:left;padding:10px}footer{margin-top:32px;font-size:11px;color:var(--muted);display:flex;justify-content:space-between}[hidden]{display:none!important}@media(max-width:1100px){aside{width:160px;padding:30px 18px}main{margin-left:160px;width:calc(100% - 160px);padding:30px 22px}.workspace{grid-template-columns:240px 1fr}.metrics strong{font-size:25px}.channels{grid-template-columns:repeat(4,1fr)}}@media(max-width:760px){aside{display:none}main{margin:0;width:100%;padding:22px 15px}h1{font-size:24px}header{align-items:start}.overview{grid-template-columns:repeat(2,1fr);gap:10px}.workspace{grid-template-columns:1fr}.fleet{max-height:310px;overflow:auto}.panel{padding:18px}.metrics{gap:8px}.metrics article{padding:12px}.channels{grid-template-columns:repeat(4,1fr)}footer span{display:none}}

/* HMI palette: charcoal surfaces, amber controls, green normal, red alarm. */
:root{color-scheme:dark}
aside{border-right:1px solid #333}
.nav.active{color:var(--accent);box-shadow:inset 3px 0 var(--accent)}
.metrics strong,#total{color:var(--accent)}
#fresh,.channel.on{color:#00d684}
#alarm-count{color:#ff747c}
input::placeholder{color:#929292}
button:focus-visible,input:focus-visible{outline:2px solid var(--accent);outline-offset:3px}

.brand{font-size:22px;letter-spacing:0;white-space:nowrap}.brand small{white-space:normal}@media(max-width:1100px){.brand{font-size:18px}}