:root{--nb-primary:#0a2540;--nb-primary-2:#1e3a5f;--nb-accent:#2e7df6;--nb-bg:#f4f6fb;--nb-card:#fff;--nb-text:#0a2540;--nb-muted:#5a6b85;--nb-border:#d7deeb;--nb-success:#167a3f;--nb-danger:#b3261e}*{box-sizing:border-box}body,html{margin:0;padding:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;background:var(--nb-bg);color:var(--nb-text)}a{color:var(--nb-accent);text-decoration:none}a:hover{text-decoration:underline}.nb-header{background:var(--nb-primary);color:#fff;padding:14px 24px;justify-content:space-between;border-bottom:4px solid var(--nb-accent)}.nb-header,.nb-header .brand{display:flex;align-items:center}.nb-header .brand{gap:10px;font-size:20px;font-weight:700;letter-spacing:.3px}.nb-header .brand .logo{width:28px;height:28px;border-radius:6px;background:linear-gradient(135deg,var(--nb-accent),#6db1ff);display:inline-flex;align-items:center;justify-content:center;font-weight:800;color:#fff}.nb-header .lab-badge{background:#ffb020;color:#3a2a00;font-size:11px;font-weight:700;padding:2px 8px;border-radius:999px;margin-left:8px;letter-spacing:.5px}.nb-header nav a{color:#cfdcf0;margin-left:18px;font-size:14px}.nb-header nav a:hover,.nb-hero{color:#fff}.nb-hero{background:linear-gradient(135deg,var(--nb-primary),var(--nb-primary-2));padding:64px 24px;text-align:center}.nb-hero h1{font-size:42px;margin:0 0 12px}.nb-hero p{color:#cfdcf0;font-size:18px;max-width:640px;margin:0 auto}.nb-hero .cta{margin-top:28px;display:inline-flex;gap:12px}.container{max-width:1100px;margin:0 auto;padding:32px 24px}.grid{display:grid;grid-gap:20px;gap:20px;grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}.card{background:var(--nb-card);border:1px solid var(--nb-border);border-radius:12px;padding:22px;box-shadow:0 1px 2px rgba(10,37,64,.05)}.card h3{margin-top:0}.auth-wrap{max-width:420px;margin:48px auto;padding:0 16px}.auth-card{background:var(--nb-card);border:1px solid var(--nb-border);border-radius:12px;padding:28px;box-shadow:0 2px 8px rgba(10,37,64,.06)}.auth-card h2{margin:0 0 4px}.auth-card .sub{color:var(--nb-muted);font-size:14px;margin-bottom:22px}label{display:block;font-size:13px;font-weight:600;color:var(--nb-text);margin-bottom:6px}input[type=email],input[type=password],input[type=text]{width:100%;padding:11px 12px;font-size:15px;border:1px solid var(--nb-border);border-radius:8px;background:#fbfcfe;outline:none}input:focus{border-color:var(--nb-accent);background:#fff}.field{margin-bottom:14px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;width:100%;padding:11px 14px;font-size:15px;font-weight:600;border-radius:8px;border:1px solid transparent;cursor:pointer;text-decoration:none}.btn-primary{background:var(--nb-accent);color:#fff}.btn-primary:hover{background:#1f6ce0}.btn-secondary{background:#fff;color:var(--nb-text);border-color:var(--nb-border)}.btn-secondary:hover{background:#f0f4fb}.btn-google{background:#fff;color:#1f2937;border-color:#d0d7e2}.btn-google:hover{background:#f6f8fc}.divider{display:flex;align-items:center;gap:12px;margin:18px 0;color:var(--nb-muted);font-size:12px}.divider:after,.divider:before{content:"";flex:1 1;height:1px;background:var(--nb-border)}.alert{padding:10px 12px;border-radius:8px;font-size:14px;margin-bottom:14px}.alert-error{background:#fdecea;color:var(--nb-danger);border:1px solid #f5c6c2}.alert-success{background:#e8f4ec;color:var(--nb-success);border:1px solid #c5e0cf}.account-tile{background:#fff;border:1px solid var(--nb-border);border-radius:12px;padding:18px 20px;display:flex;flex-direction:column;gap:6px}.account-tile .label{font-size:12px;color:var(--nb-muted);font-weight:600;text-transform:uppercase;letter-spacing:.5px}.account-tile .balance{font-size:26px;font-weight:700;color:var(--nb-text)}.account-tile .meta{font-size:13px;color:var(--nb-muted)}.tx-table{width:100%;border-collapse:collapse}.tx-table td,.tx-table th{padding:10px 8px;text-align:left;font-size:14px;border-bottom:1px solid var(--nb-border)}.tx-table th{font-size:12px;text-transform:uppercase;letter-spacing:.5px}.footer,.tx-table th{color:var(--nb-muted)}.footer{text-align:center;padding:32px 16px;font-size:13px}.muted{color:var(--nb-muted)}.text-right{text-align:right}.kbd{font-family:ui-monospace,SFMono-Regular,monospace;background:#eef2f9;padding:1px 6px;border-radius:4px;font-size:13px}