:root{--c1:#0ea5e9;--c2:#111827;--bg:#f8fafc}*{box-sizing:border-box}
body{margin:0;background:var(--bg);font-family:system-ui,Segoe UI,Roboto,Arial}
.container{max-width:1200px;margin:0 auto;padding:24px}
.card{background:#fff;border-radius:16px;box-shadow:0 10px 24px rgba(0,0,0,.06);padding:20px}
.btn{display:inline-block;background:var(--c1);color:#fff;padding:10px 16px;border-radius:12px;text-decoration:none;border:0;cursor:pointer;font-weight:600}
.btn.secondary{background:#e5e7eb;color:#111827}
.input,select,textarea{width:100%;padding:10px 12px;border:1px solid #e5e7eb;border-radius:12px;background:#fff}
.grid{display:grid;gap:16px}
.grid-2{grid-template-columns:1fr 1fr}
.header{padding:16px 0;background:#fff;border-bottom:1px solid #e5e7eb}
.header .brand{font-weight:800;color:var(--c2)}
.nav{display:flex;gap:12px}
.table{width:100%;border-collapse:separate;border-spacing:0 8px}
.table th{text-align:left;color:#6b7280;font-size:14px}
.table td{background:#fff;padding:10px;border:1px solid #e5e7eb}
.preview{border:1px dashed #cbd5e1;border-radius:12px;background:#fff;padding:16px}