:root{--bg:#f6f7f9;--card:#fff;--text:#1f2937;--muted:#6b7280;--primary:#0f3d5e;--line:#e5e7eb}
*{box-sizing:border-box} body{margin:0;font-family:Arial,Helvetica,sans-serif;background:var(--bg);color:var(--text);line-height:1.55}.container{max-width:1180px;margin:0 auto;padding:0 18px}.topbar{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:10}.nav{display:flex;align-items:center;justify-content:space-between;min-height:66px}.logo{font-size:24px;font-weight:700;color:var(--primary);text-decoration:none}nav a{margin-left:18px;color:#374151;text-decoration:none;font-weight:600}.hero{background:linear-gradient(135deg,#0f3d5e,#1d6b8f);color:white;padding:70px 0}.hero h1{font-size:42px;margin:0 0 14px}.hero p{font-size:19px;max-width:780px}.btn{display:inline-block;background:var(--primary);color:white;padding:11px 18px;border-radius:8px;text-decoration:none;border:0;cursor:pointer}.btn.secondary{background:#fff;color:var(--primary)}.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin:30px 0}.card{background:var(--card);padding:22px;border:1px solid var(--line);border-radius:12px;box-shadow:0 2px 10px rgba(0,0,0,.03)}.card h3{margin-top:0}.muted{color:var(--muted)}.section{padding:36px 0}.table{width:100%;border-collapse:collapse;background:white;border-radius:10px;overflow:hidden}.table th,.table td{border-bottom:1px solid var(--line);padding:12px;text-align:left}.form input,.form select,.form textarea{width:100%;padding:11px;border:1px solid #d1d5db;border-radius:8px;margin:6px 0 14px}.form label{font-weight:700}.footer{padding:26px 0;background:#111827;color:#d1d5db;margin-top:40px}.badge{display:inline-block;padding:4px 8px;background:#eef2ff;border-radius:999px;color:#3730a3;font-size:12px}.two{display:grid;grid-template-columns:1fr 1fr;gap:20px}@media(max-width:800px){.grid,.two{grid-template-columns:1fr}.nav{display:block;padding:14px 18px}nav a{display:inline-block;margin:8px 10px 0 0}.hero h1{font-size:30px}}
.alert.success{background:#e8f7ee;border:1px solid #b7e2c5;padding:12px;border-radius:8px;margin-bottom:12px}.mini-product{border-bottom:1px solid #eee;padding:10px 0}.btn.small{padding:6px 10px;font-size:13px}code{background:#f4f4f4;padding:4px 6px;border-radius:4px;word-break:break-all}