:root{--bg:#f6f7fb;--card:#fff;--text:#172033;--muted:#6b7280;--primary:#0f8b8d;--danger:#dc2626;--ok:#16a34a;--warn:#f59e0b;--border:#e5e7eb}*{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;background:var(--bg);color:var(--text)}a{color:var(--primary);text-decoration:none}.top{background:#fff;border-bottom:1px solid var(--border);padding:14px 24px;display:flex;gap:18px;align-items:center;justify-content:space-between;position:sticky;top:0;z-index:2}.brand{font-weight:800;font-size:20px;color:var(--text)}nav{display:flex;gap:12px;flex-wrap:wrap}nav a{font-weight:600;color:#334155}.container{width:min(1180px,94vw);margin:24px auto}.card{background:var(--card);border:1px solid var(--border);border-radius:16px;padding:20px;margin-bottom:18px;box-shadow:0 10px 25px rgba(15,23,42,.04)}.narrow{max-width:520px;margin-left:auto;margin-right:auto}.hero{padding:60px 24px;text-align:center}.hero h1{font-size:42px;margin:0 0 10px}.grid{display:grid;gap:18px}.two{grid-template-columns:repeat(2,minmax(0,1fr))}.four{grid-template-columns:repeat(4,minmax(0,1fr))}.balance{font-size:30px;font-weight:800;margin:8px 0 18px}.btn{display:inline-block;border:0;background:var(--primary);color:#fff!important;padding:10px 16px;border-radius:10px;font-weight:700;cursor:pointer}.btn.secondary{background:#334155}.btn.small{padding:7px 10px;border-radius:8px;font-size:13px}label{display:block;font-weight:700;margin:12px 0 8px}input,select,textarea{width:100%;padding:11px 12px;border:1px solid var(--border);border-radius:10px;background:#fff;font:inherit}textarea{resize:vertical}.row{display:flex;gap:10px;align-items:end}.row input{flex:1}.check{display:inline-flex;gap:8px;align-items:center}.check input{width:auto}table{width:100%;border-collapse:collapse;margin-top:12px}th,td{padding:12px;border-bottom:1px solid var(--border);text-align:left;vertical-align:top}th{font-size:13px;text-transform:uppercase;color:var(--muted)}.muted{color:var(--muted);font-size:14px}.alert{padding:12px 14px;border-radius:12px;margin-bottom:16px;background:#dcfce7;color:#14532d}.alert.danger{background:#fee2e2;color:#7f1d1d}.badge{display:inline-block;padding:4px 9px;border-radius:999px;font-size:12px;font-weight:800;background:#e5e7eb}.badge.success,.badge.paid{background:#dcfce7;color:#166534}.badge.pending{background:#fef3c7;color:#92400e}.badge.failed{background:#fee2e2;color:#991b1b}code{display:inline-block;background:#0f172a;color:#e2e8f0;padding:8px 10px;border-radius:8px;word-break:break-all}.inline{display:inline}.foot{text-align:center;color:var(--muted);padding:24px}@media(max-width:780px){.top{display:block}.brand{display:block;margin-bottom:12px}.two,.four{grid-template-columns:1fr}table{display:block;overflow:auto}.row{display:block}.btn{margin-top:8px}}