:root{--bg:#0f1420;--card:#1a2233;--accent:#4f8cff;--text:#e8ecf5;--text-dim:#93a0bb;--green:#3ddc84;--red:#ff5c5c;--border:#232c40}*{box-sizing:border-box}body,html{padding:0;margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Hiragino Sans,Yu Gothic,sans-serif}header{display:flex;justify-content:space-between;align-items:center;padding:20px 28px;border-bottom:1px solid var(--border)}header h1{font-size:18px;margin:0;font-weight:600}.status{font-size:13px;color:var(--text-dim);display:flex;align-items:center;gap:6px}.dot{width:8px;height:8px;border-radius:50%;background:var(--green)}.dot.off{background:var(--red)}main{padding:24px 28px;max-width:1200px;margin:0 auto}.range-tabs{display:flex;gap:8px;margin-bottom:20px}.range-tabs button{background:var(--card);color:var(--text-dim);border:1px solid var(--border);padding:6px 14px;border-radius:999px;cursor:pointer;font-size:13px}.range-tabs button.active{background:var(--accent);color:#fff;border-color:var(--accent)}.kpi-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));grid-gap:16px;gap:16px;margin-bottom:24px}.kpi-card{background:var(--card);border-radius:12px;padding:18px 20px;border:1px solid var(--border)}.kpi-card .label{font-size:12px;color:var(--text-dim);margin-bottom:8px}.kpi-card .value{font-size:26px;font-weight:700}.chart-grid{display:grid;grid-template-columns:2fr 1fr;grid-gap:16px;gap:16px;margin-bottom:16px}.chart-grid.secondary{grid-template-columns:1fr 1fr}.card{background:var(--card);border-radius:12px;padding:18px 20px;border:1px solid var(--border)}.card h2{font-size:14px;margin:0 0 14px;color:var(--text-dim);font-weight:500}table{width:100%;border-collapse:collapse;font-size:13px}td,th{text-align:left;padding:6px 4px;border-bottom:1px solid var(--border)}th{color:var(--text-dim);font-weight:500}@media (max-width:800px){.chart-grid,.chart-grid.secondary{grid-template-columns:1fr}}.login-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center}.login-card{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:32px;width:320px}.login-card h1{font-size:16px;margin:0 0 20px}.login-card input{border-radius:8px;border:1px solid var(--border);background:#0f1420;color:var(--text);margin-bottom:12px}.login-card button,.login-card input{width:100%;padding:10px 12px;font-size:14px}.login-card button{border-radius:8px;border:none;background:var(--accent);color:#fff;cursor:pointer}.login-card .error{color:var(--red);font-size:13px;margin-bottom:12px}