:root{color-scheme:dark;font-family:system-ui,-apple-system,Segoe UI,Roboto,PingFang SC,Microsoft YaHei,sans-serif;--bg: #0f172a;--bg2: #1e293b;--fg: #e2e8f0;--muted: #94a3b8;--accent: #38bdf8;--danger: #f87171;--ok: #34d399}*{box-sizing:border-box}body{margin:0;min-height:100vh;background:var(--bg);color:var(--fg)}a{color:var(--accent);text-decoration:none}button,.btn{display:inline-block;background:var(--accent);color:#062033;border:none;border-radius:8px;padding:.5rem .9rem;font-size:.9rem;cursor:pointer}button:disabled{opacity:.5;cursor:not-allowed}button.ghost,.btn.ghost{background:transparent;color:var(--fg);border:1px solid var(--bg2)}button.link{background:transparent;color:var(--muted);padding:0}button.danger{color:var(--danger)}.btn.primary{color:#062033}.center{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:100vh;gap:1rem;padding:1rem}.login-wrap h1{margin:0}.card{background:var(--bg2);border-radius:12px;padding:1.25rem;width:100%;max-width:420px;display:flex;flex-direction:column;gap:.75rem}label{display:flex;flex-direction:column;gap:.3rem;font-size:.85rem;color:var(--muted)}input{background:#0b1220;border:1px solid #334155;border-radius:8px;color:var(--fg);padding:.55rem .7rem;font-size:.95rem}.error{color:var(--danger);font-size:.85rem}.ok{color:var(--ok);font-size:.85rem}.divider{text-align:center;color:var(--muted);font-size:.8rem;margin:.5rem 0}.qr-box{display:flex;flex-direction:column;align-items:center;gap:.4rem}.qr-box img{background:#fff;border-radius:8px;padding:6px}.qr-box p{margin:0;color:var(--muted);font-size:.8rem}.qr-img{background:#fff;border-radius:8px;padding:6px;width:200px;height:200px}.mono{font-family:ui-monospace,monospace;font-size:.75rem;word-break:break-all}.shell{min-height:100vh}.topbar{display:flex;align-items:center;justify-content:space-between;padding:.9rem 1.25rem;border-bottom:1px solid var(--bg2);position:sticky;top:0;background:var(--bg)}.brand{font-weight:700;color:var(--fg)}.topbar-right{display:flex;align-items:center;gap:1rem}.user{color:var(--fg)}.content{max-width:900px;margin:0 auto;padding:1.25rem}h2{margin:0 0 1rem}h3{margin:1.5rem 0 .75rem}.empty{color:var(--muted)}.device-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:1rem}.device-card{background:var(--bg2);border-radius:12px;padding:1rem;display:flex;flex-direction:column;gap:.6rem}.device-head{display:flex;align-items:center;gap:.5rem}.dot{width:10px;height:10px;border-radius:50%;background:var(--muted)}.dot.online{background:var(--ok)}.name{font-weight:600}.meta{display:flex;justify-content:space-between;color:var(--muted);font-size:.8rem}.actions{display:flex;flex-wrap:wrap;gap:.4rem}.user-line{margin:.2rem 0}