:root{color-scheme:light;--ink:#172033;--muted:#667085;--line:#dce3ed;--brand:#175cd3;--bg:#f4f7fb;--card:#fff;--danger:#b42318;--good:#067647}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font-family:Inter,"PingFang SC","Microsoft YaHei",system-ui,sans-serif}.app-header{position:sticky;top:0;z-index:10;display:flex;align-items:center;gap:24px;padding:14px 24px;background:#0e1d36;color:#fff;box-shadow:0 4px 20px #1020401a}.brand{color:#fff;font-weight:800;text-decoration:none;white-space:nowrap}.app-header nav{display:flex;flex:1;gap:8px;overflow:auto}.app-header nav a,.link-button{color:#cbd8eb;text-decoration:none;background:none;border:0;padding:8px 10px;white-space:nowrap;cursor:pointer}.app-header nav a:hover,.link-button:hover{color:#fff}.page-shell{max-width:1720px;margin:auto;padding:28px}.page-heading{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:20px}.page-heading h1{margin:2px 0 0;font-size:30px}.eyebrow{margin:0;color:#3974ce;font-size:13px;font-weight:800;letter-spacing:.08em;text-transform:uppercase}.screen-grid{display:grid;grid-template-columns:repeat(7,minmax(0,1fr));gap:14px}.screen-card{display:flex;min-width:0;flex-direction:column;gap:8px;padding:10px;text-align:left;background:var(--card);border:1px solid var(--line);border-radius:12px;box-shadow:0 5px 20px #23334f0b;cursor:pointer}.screen-card:hover{border-color:#79a5e8;transform:translateY(-1px)}.screen-frame{display:block;aspect-ratio:16/9;overflow:hidden;background:#122b51;border-radius:8px}.screen-frame img{width:100%;height:100%;object-fit:cover}.screen-card__head{display:flex;align-items:center;justify-content:space-between;gap:8px}.screen-card__meta{overflow:hidden;color:var(--muted);font-size:12px;text-overflow:ellipsis;white-space:nowrap}.status-dot{font-size:11px;color:#b54708}.status-dot.is-online{color:var(--good)}.warning-text{color:#b54708;font-size:11px}dialog{width:min(94vw,1400px);padding:0;border:0;border-radius:16px;box-shadow:0 30px 80px #0008}dialog::backdrop{background:#07101fcc}.dialog-head{display:flex;justify-content:space-between;padding:14px 18px;background:#fff}.dialog-head button{border:0;background:#eef3fa;border-radius:8px;padding:8px 14px;cursor:pointer}dialog img{display:block;width:100%;max-height:82vh;object-fit:contain;background:#081426}.login-page{min-height:100vh;display:grid;place-items:center;background:radial-gradient(circle at 20% 20%,#dbeafe,#f6f8fc 45%)}.login-card{width:min(92vw,420px);padding:34px;background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:0 24px 70px #19355f20}.login-card h1{margin:8px 0 24px}.stack-form{display:grid;gap:16px}.stack-form label{display:grid;gap:7px;font-weight:700}.stack-form input,.panel input,.panel select{width:100%;padding:11px 12px;border:1px solid #c8d2e0;border-radius:8px}.primary-button,.panel button{padding:11px 16px;color:#fff;background:var(--brand);border:0;border-radius:8px;font-weight:700;cursor:pointer}.alert{padding:12px;border-radius:8px}.alert-error{background:#fee4e2;color:var(--danger)}.panel{padding:22px;background:#fff;border:1px solid var(--line);border-radius:12px}.data-table{width:100%;border-collapse:collapse;background:#fff}.data-table th,.data-table td{padding:12px;border-bottom:1px solid var(--line);text-align:left}@media(max-width:1280px){.screen-grid{grid-template-columns:repeat(4,minmax(0,1fr))}}@media(max-width:720px){.page-shell{padding:16px}.app-header{align-items:flex-start;flex-wrap:wrap}.screen-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.page-heading{align-items:flex-start;flex-direction:column}}