:root{--bg:#f6f7f9;--card:#fff;--fg:#14171c;--dim:#6b7280;--line:#e4e7ec;--accent:#2563eb;--ok:#16a34a;--bad:#dc2626;--warn:#b45309;
  --c-a:#93c5fd;--c-b:#2563eb;--chip:#eef2f7;color-scheme:light}
@media (prefers-color-scheme:dark){:root{--bg:#0e1013;--card:#171a1f;--fg:#e6e8eb;--dim:#9097a1;--line:#2a2f37;--accent:#60a5fa;
  --ok:#4ade80;--bad:#f87171;--warn:#fbbf24;--c-a:#1e3a8a;--c-b:#60a5fa;--chip:#222831;color-scheme:dark}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--fg);font:14px/1.55 -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif}
a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}
h1{font-size:20px;margin:0 0 6px}h2{font-size:16px;margin:0 0 10px}h3{font-size:13px;margin:16px 0 6px;color:var(--dim);font-weight:600}
.top{position:sticky;top:0;z-index:5;display:flex;align-items:center;gap:18px;padding:10px max(16px,env(safe-area-inset-left));
  background:var(--card);border-bottom:1px solid var(--line)}
.top .brand{font-weight:700;color:var(--fg)}.top nav{display:flex;gap:14px;flex:1;flex-wrap:wrap}.logout{margin:0}
main{max-width:1180px;margin:0 auto;padding:16px}
.foot{max-width:1180px;margin:0 auto;padding:8px 16px 28px;color:var(--dim);font-size:12px}
.card{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:16px;margin-bottom:14px;display:block;color:inherit}
a.card:hover{text-decoration:none;border-color:var(--accent)}
.machines{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:14px;margin-bottom:14px}
.machines .card{margin:0}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:14px}.grid2>.card{margin:0}
.grid2+.card,.grid2{margin-bottom:14px}
@media (max-width:820px){.grid2{grid-template-columns:1fr}}
.row{display:flex;align-items:center}.between{justify-content:space-between}.gap{gap:10px}.wrap{flex-wrap:wrap;gap:10px}.grow{flex:1;min-width:0}
.kv{display:flex;justify-content:space-between;gap:10px;margin:4px 0}
.small{font-size:12px}.dim{color:var(--dim)}.ok{color:var(--ok)}.bad{color:var(--bad)}.warn{color:var(--warn)}
.mono{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}.pre{white-space:pre-wrap}
.dot{display:inline-block;width:9px;height:9px;border-radius:50%;margin-right:7px;vertical-align:1px;background:var(--dim)}
.dot.ok{background:var(--ok)}.dot.bad{background:var(--bad)}
.badge{display:inline-block;white-space:nowrap;font-size:11px;padding:1px 7px;border-radius:999px;background:var(--chip);color:var(--dim);vertical-align:2px;font-weight:500}
.badge.active{background:#dcfce7;color:#166534}.badge.disabled{background:#fef3c7;color:#92400e}.badge.missing{background:#fee2e2;color:#991b1b}
@media (prefers-color-scheme:dark){.badge.active{background:#14532d;color:#bbf7d0}.badge.disabled{background:#78350f;color:#fde68a}.badge.missing{background:#7f1d1d;color:#fecaca}}
.chip{display:inline-block;background:var(--chip);border-radius:6px;padding:2px 8px;margin:2px 4px 2px 0;font-size:12px}
.notice{padding:10px 14px;border-radius:8px;border:1px solid var(--line);background:var(--card)}
.notice.ok{border-color:var(--ok)}.notice.bad{border-color:var(--bad)}.notice.warn{border-color:var(--warn)}
.tablewrap{overflow-x:auto;-webkit-overflow-scrolling:touch}
table{width:100%;border-collapse:collapse;min-width:640px}
th,td{text-align:left;padding:7px 8px;border-bottom:1px solid var(--line);vertical-align:top}
th{font-size:12px;color:var(--dim);font-weight:600;white-space:nowrap}td.num,th.num{text-align:right;white-space:nowrap}
tr.muted td{opacity:.6}tr.warnrow td{background:rgba(220,38,38,.06)}
.btn{display:inline-block;border:1px solid var(--line);background:var(--card);color:var(--fg);border-radius:8px;padding:6px 14px;font:inherit;cursor:pointer}
.btn:hover{border-color:var(--accent);text-decoration:none}.btn.primary{background:var(--accent);border-color:var(--accent);color:#fff}
.btn.danger{color:var(--bad)}.btn.danger:hover{border-color:var(--bad)}
button.link{background:none;border:0;color:var(--accent);cursor:pointer;font:inherit;padding:0}
form label{display:block;margin:0 0 12px;font-size:13px;color:var(--dim)}
input,select,textarea{display:block;width:100%;margin-top:4px;padding:8px 10px;border:1px solid var(--line);border-radius:8px;background:var(--bg);color:var(--fg);font:inherit}
textarea{resize:vertical;font-size:12px;word-break:break-all}
form.narrow{max-width:520px}
.linkbox{display:flex;gap:18px;align-items:flex-start}.qr{flex:none;background:#fff;border-radius:8px;padding:6px;line-height:0}
.qr svg{width:220px;height:auto;max-width:100%}
@media (max-width:620px){.linkbox{flex-direction:column}.qr svg{width:100%}}
svg.bar{width:100%;height:8px;display:block;margin:6px 0}.bar-bg{fill:var(--line)}.bar-fg{fill:var(--accent)}.bar-hot{fill:var(--bad)}
svg.chart{width:100%;height:120px;display:block;background:var(--bg);border-radius:6px}.c-a{fill:var(--c-a)}.c-b{fill:var(--c-b)}
.chart-legend{font-size:12px;margin-top:4px}.sw{display:inline-block;width:10px;height:10px;border-radius:2px;vertical-align:-1px;margin-right:4px}
.sw.c-a{background:var(--c-a)}.sw.c-b{background:var(--c-b)}
ul.events,ul.plain{list-style:none;margin:0;padding:0}ul.events li,ul.plain li{padding:5px 0;border-bottom:1px solid var(--line)}
body.center{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:16px}
.login{width:100%;max-width:340px}.login .btn{width:100%;margin-top:4px}
code{background:var(--chip);border-radius:4px;padding:1px 5px;word-break:break-all}