:root{
  --bg:#f6f5f8; --card:#ffffff; --ink:#202126; --muted:#777483;
  --violet:#6e4cb6; --violet-2:#8b6bc7; --violet-soft:#eee8f8;
  --green:#2f8f68; --red:#c94b58; --line:#e8e5ec; --shadow:0 8px 28px rgba(40,30,65,.08);
}
*{box-sizing:border-box}
html,body{margin:0;background:var(--bg);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"SF Pro Text",Inter,Segoe UI,sans-serif}
button{font:inherit}
.shell{width:min(100%,680px);margin:0 auto;padding:calc(18px + env(safe-area-inset-top)) 16px calc(30px + env(safe-area-inset-bottom))}
.topbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}
h1{font-size:27px;letter-spacing:-.7px;margin:2px 0 0} h2{font-size:19px;letter-spacing:-.3px;margin:2px 0}
.eyebrow{font-size:10px;font-weight:800;letter-spacing:1.35px;color:var(--violet)}
.pill{display:flex;align-items:center;gap:7px;border-radius:999px;padding:7px 10px;font-size:12px;font-weight:700;background:#ece9ef;color:#777}
.pill .dot{width:8px;height:8px;border-radius:50%;background:#aaa}.pill.online{background:#e8f5ee;color:#237653}.pill.online .dot{background:#36a674}
.hero-card,.chart-card,.section{background:var(--card);border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow)}
.hero-card{padding:18px;margin-bottom:14px}.hero-top{display:flex;justify-content:space-between;align-items:flex-start;gap:12px}
.label{display:block;color:var(--muted);font-size:12px;margin-bottom:3px}.hero-value{font-size:43px;font-weight:760;letter-spacing:-2px;line-height:1}.unit{font-size:19px;color:var(--muted);font-weight:650;margin-left:4px}
.primary,.secondary,.ghost,.danger{border:0;border-radius:13px;padding:12px 14px;font-weight:750;cursor:pointer}
.primary{background:var(--violet);color:white}.secondary{background:var(--violet-soft);color:#553b92}.ghost{background:#f1eff3;color:#5f5b66}.danger{background:#fff0f2;color:#af3343}
button:disabled{opacity:.42;cursor:not-allowed}
.mini-grid{display:grid;grid-template-columns:1fr 1fr;gap:9px;margin-top:18px}.mini{background:#f8f7fa;border-radius:14px;padding:11px 12px}.mini strong{font-size:17px}.mini small{display:block;color:var(--muted);margin-top:2px}
.section{padding:16px;margin:14px 0}.section-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}
.chart-card{box-shadow:none;padding:12px;margin-top:10px;border-radius:15px}.chart-head{display:flex;justify-content:space-between;align-items:center;font-size:12px;color:var(--muted);margin-bottom:7px}.chart-head strong{color:var(--ink);font-size:13px}
canvas{display:block;width:100%;height:auto}
.switch-row{display:flex;gap:5px;align-items:center;font-size:12px;color:var(--muted)}
.rate-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px}.rate-btn{border:1px solid var(--line);background:#faf9fb;border-radius:14px;padding:11px;text-align:left;color:var(--ink)}.rate-btn.active{border-color:var(--violet);background:var(--violet-soft)}.rate-btn strong,.rate-btn span{display:block}.rate-btn span{color:var(--muted);font-size:12px;margin-top:2px}
.action-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:9px}.action-stack{display:grid;gap:8px}.wide{width:100%}
.badge{background:#f1eff4;padding:6px 9px;border-radius:999px;font-size:11px;color:#686471;font-weight:750}
.led-row{display:flex;gap:13px;align-items:center;flex-wrap:wrap}.led-dot{width:36px;height:36px;border-radius:50%;border:4px solid white;box-shadow:0 0 0 1px #d9d5df,0 3px 9px rgba(0,0,0,.08)}.led-dot.selected{box-shadow:0 0 0 3px var(--violet),0 4px 10px rgba(0,0,0,.12)}
.led-dot.off{background:#2f3137}.led-dot.red{background:#e65461}.led-dot.green{background:#47ad77}.led-dot.blue{background:#4d7de1}.led-dot.purple{background:#8359c9}.led-dot.cyan{background:#49b9c2}.led-dot.white{background:#fff}
.hint{font-size:12px;color:var(--muted);margin:10px 0 0}.soon{font-size:10px;background:#ded9e6;padding:3px 6px;border-radius:999px;margin-left:5px}
.notice{background:#fff8e8;border:1px solid #f0dfb6;border-radius:16px;padding:13px;margin-bottom:14px;font-size:12px;color:#6c5a37}.notice strong,.notice span{display:block}.notice span{margin-top:4px}.notice-actions{display:flex;gap:8px;margin-top:10px}
.hidden{display:none!important}.danger-zone{text-align:center;background:transparent;border:0;box-shadow:none;padding:2px}
.progress-wrap{margin-top:12px}.progress{height:8px;background:#ece9f0;border-radius:999px;overflow:hidden}.progress>div{height:100%;width:15%;background:var(--violet);border-radius:999px;transition:width .2s}.progress-wrap span{font-size:11px;color:var(--muted);display:block;margin-top:5px}
footer{display:flex;justify-content:space-between;color:#9a96a2;font-size:10px;padding:8px 2px 0}
.toast{position:fixed;left:50%;bottom:calc(20px + env(safe-area-inset-bottom));transform:translate(-50%,20px);background:#27252d;color:white;padding:10px 14px;border-radius:999px;font-size:12px;opacity:0;pointer-events:none;transition:.2s;z-index:20;white-space:nowrap}.toast.show{opacity:1;transform:translate(-50%,0)}
@media(min-width:560px){.mini-grid{grid-template-columns:repeat(4,1fr)}.rate-grid{grid-template-columns:repeat(4,1fr)}}