:root{--bg:#f5f7fa;--surface:#fff;--surface-2:#eef3f6;--text:#17212b;--muted:#697784;--border:#dfe6eb;--brand:#173b57;--accent:#16849a;--success:#27784a;--shadow:0 10px 30px #14283c0f}*{box-sizing:border-box}html,body{background:var(--bg);min-height:100%;color:var(--text);margin:0;font-family:Arial,Helvetica,sans-serif}a{color:inherit;text-decoration:none}button,input{font:inherit}.app-shell{grid-template-columns:250px minmax(0,1fr);min-height:100vh;display:grid}.sidebar{background:var(--brand);color:#fff;padding:24px 18px}.brand{margin-bottom:28px;font-size:19px;font-weight:800;line-height:1.2}.brand small{opacity:.66;letter-spacing:.08em;text-transform:uppercase;margin-top:5px;font-size:11px;font-weight:600;display:block}.nav{gap:6px;display:grid}.nav a{color:#ffffffd1;border-radius:9px;padding:10px 12px;font-size:14px}.nav a.active{color:#fff;background:#ffffff21}.main{min-width:0}.topbar{background:var(--surface);border-bottom:1px solid var(--border);z-index:5;justify-content:space-between;align-items:center;height:68px;padding:0 28px;display:flex;position:sticky;top:0}.page{max-width:1500px;margin:auto;padding:28px}.eyebrow{color:var(--accent);text-transform:uppercase;letter-spacing:.12em;font-size:12px;font-weight:800}h1{letter-spacing:-.02em;margin:6px 0 8px;font-size:30px}.subtitle{color:var(--muted);margin:0 0 24px}.metrics{grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;display:grid}.card{background:var(--surface);border:1px solid var(--border);box-shadow:var(--shadow);border-radius:14px;padding:18px}.metric-label{color:var(--muted);font-size:13px}.metric-value{margin-top:8px;font-size:30px;font-weight:800}.panel{margin-top:18px}.panel h2{margin-top:0;font-size:17px}.status-badge{background:var(--surface-2);color:var(--brand);text-transform:uppercase;letter-spacing:.05em;border-radius:999px;align-items:center;gap:7px;padding:7px 10px;font-size:12px;font-weight:800;display:inline-flex}.dot{background:var(--success);border-radius:50%;width:7px;height:7px}.loading{min-height:100vh;color:var(--muted);place-items:center;display:grid}.error-box{border:1px solid var(--border);background:#fff;border-radius:14px;max-width:680px;margin:80px auto;padding:28px}@media (max-width:980px){.metrics{grid-template-columns:repeat(2,minmax(0,1fr))}}@media (max-width:720px){.app-shell{grid-template-columns:1fr}.sidebar{display:none}.topbar{padding:0 18px}.page{padding:20px 16px}.metrics{grid-template-columns:1fr}}