:root{--bg:#0f1729;--panel:#ffffff;--ink:#1f2733;--muted:#667085;--line:#e4e7ec;--brand:#2470af;--brand-d:#195d9b;--ok:#31991e;--warn:#e59209;--err:#8e1c1c}*{box-sizing:border-box}body,html{margin:0;padding:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;color:var(--ink);background:linear-gradient(180deg,#102542,#0f1729);min-height:100vh}a{color:var(--brand)}.app{max-width:1040px;margin:0 auto;padding:32px 20px 64px}.app__title{color:#fff;font-size:26px;font-weight:700;margin:0 0 4px}.app__subtitle{color:#b9c6da;margin:0 0 24px;font-size:14px}.card{background:var(--panel);border-radius:12px;padding:20px 22px;margin-bottom:18px;box-shadow:0 6px 24px rgba(0,0,0,.18)}.card h2{margin:0 0 4px;font-size:17px}.card .hint{color:var(--muted);font-size:13px;margin:0 0 14px}.row{display:flex;gap:12px;flex-wrap:wrap}.btn,.row{align-items:center}.btn{display:inline-flex;gap:8px;background:var(--brand);color:#fff;border:0;padding:9px 16px;border-radius:7px;font-size:14px;font-weight:600;cursor:pointer}.btn:hover{background:var(--brand-d)}.btn:disabled{opacity:.5;cursor:default}.btn--ghost{background:#eef2f7;color:var(--brand)}.btn--ghost:hover{background:#e2e9f1}.badge{font-size:12px;font-weight:700;padding:3px 9px;border-radius:999px}.badge--ok{background:#e6f4ea;color:var(--ok)}.badge--off{background:#fdeaea;color:var(--err)}table{width:100%;border-collapse:collapse;font-size:13px}td,th{text-align:left;padding:8px 10px;border-bottom:1px solid var(--line)}th{color:var(--muted);font-weight:600}