:root{--bg:#f5f7fb;--card:#fff;--text:#172033;--muted:#667085;--line:#e5e7eb;--primary:#1f5eff;--danger:#b42318;--ok:#027a48;--warn:#b54708}*{box-sizing:border-box}body{margin:0;font-family:Arial,Helvetica,sans-serif;background:var(--bg);color:var(--text)}a{color:var(--primary);text-decoration:none}.layout{display:flex;min-height:100vh}.sidebar{width:245px;background:#111827;color:#fff;padding:22px 16px;position:fixed;top:0;bottom:0;left:0}.brand{font-weight:700;font-size:20px;margin-bottom:22px}.nav a{display:block;color:#d1d5db;padding:10px 12px;border-radius:8px;margin-bottom:4px}.nav a.active,.nav a:hover{background:#1f2937;color:#fff}.main{margin-left:245px;width:calc(100% - 245px);padding:28px}.topbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:22px}.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:18px;margin-bottom:18px;box-shadow:0 1px 2px rgba(16,24,40,.04)}.grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.metric{font-size:28px;font-weight:700;margin-top:8px}.muted{color:var(--muted)}table{width:100%;border-collapse:collapse;background:#fff}th,td{padding:11px;border-bottom:1px solid var(--line);vertical-align:top;text-align:left}th{font-size:13px;color:#475467;background:#f9fafb}input,select,textarea{width:100%;padding:10px;border:1px solid #d0d5dd;border-radius:8px;font:inherit;background:#fff}textarea{min-height:140px}.row{display:grid;grid-template-columns:1fr 1fr;gap:14px}.btn{display:inline-block;border:0;border-radius:8px;background:var(--primary);color:#fff;padding:10px 14px;cursor:pointer;font-weight:600}.btn.secondary{background:#475467}.btn.danger{background:var(--danger)}.btn.light{background:#eef2ff;color:#1f5eff}.badge{display:inline-block;padding:4px 8px;border-radius:99px;font-size:12px;background:#eef2ff;color:#1f5eff}.badge.ok{background:#ecfdf3;color:var(--ok)}.badge.warn{background:#fffaeb;color:var(--warn)}.badge.error{background:#fef3f2;color:var(--danger)}.actions{display:flex;gap:8px;flex-wrap:wrap}.login{max-width:420px;margin:80px auto}.notice{padding:12px 14px;border-radius:10px;background:#ecfdf3;color:#027a48;margin-bottom:16px}.errorbox{padding:12px 14px;border-radius:10px;background:#fef3f2;color:#b42318;margin-bottom:16px}.code{font-family:Consolas,monospace;background:#f3f4f6;border:1px solid var(--line);padding:12px;border-radius:8px;white-space:pre-wrap}.small{font-size:12px}.footer{color:#98a2b3;font-size:12px;margin-top:30px}@media(max-width:900px){.sidebar{position:static;width:100%;height:auto}.layout{display:block}.main{margin-left:0;width:100%;padding:16px}.grid,.row{grid-template-columns:1fr}}