:root{--bg:#f6f7fb;--card:#fff;--text:#172033;--muted:#64748b;--line:#e2e8f0;--brand:#2563eb;--danger:#dc2626}*{box-sizing:border-box}body{margin:0;font-family:Arial,Helvetica,sans-serif;background:var(--bg);color:var(--text)}.topbar{height:64px;background:#111827;color:white;display:flex;align-items:center;justify-content:space-between;padding:0 24px}.topbar a{color:white;text-decoration:none;font-weight:700}.container{max-width:1120px;margin:28px auto;padding:0 18px}.card{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:22px;margin-bottom:18px;box-shadow:0 10px 30px rgba(15,23,42,.05)}h1,h2,h3{margin:0 0 14px}.muted{color:var(--muted)}.grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.grid3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}label{font-weight:700;font-size:14px;display:block;margin-bottom:7px}input,textarea,select{width:100%;border:1px solid var(--line);border-radius:12px;padding:12px;font:inherit;background:white}textarea{min-height:110px}.btn{display:inline-flex;align-items:center;gap:8px;background:var(--brand);color:white!important;text-decoration:none;border:0;border-radius:12px;padding:11px 15px;font-weight:700;cursor:pointer}.btn.secondary{background:#334155}.btn.light{background:#e2e8f0;color:#172033!important}.btn.danger{background:var(--danger)}.actions{display:flex;gap:10px;flex-wrap:wrap}.table{width:100%;border-collapse:collapse}.table th,.table td{border-bottom:1px solid var(--line);padding:12px;text-align:left;vertical-align:top}.badge{display:inline-block;border-radius:999px;padding:5px 9px;background:#e0f2fe;color:#075985;font-size:12px;font-weight:700}.alert{padding:14px;border-radius:12px;background:#fff7ed;border:1px solid #fed7aa}.preview{width:100%;height:520px;border:1px solid var(--line);border-radius:14px;background:white}@media(max-width:800px){.grid,.grid3{grid-template-columns:1fr}.topbar{padding:0 14px}.container{margin:18px auto}.actions{flex-direction:column}.btn{justify-content:center}.table{font-size:14px}}