.lt-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;margin:16px 0}
.lt-card{border:1px solid #e5e5e5;padding:16px;border-radius:12px;background:#fff}
.lt-card img{width:100%;height:auto;border-radius:8px}
.lt-form{display:grid;gap:12px;max-width:520px}
.lt-form label{display:grid;gap:6px}
.lt-form input, .lt-form textarea, .lt-form select{padding:10px;border:1px solid #ddd;border-radius:8px}
.lt-form button{padding:12px 14px;border-radius:10px;border:0;background:#111;color:#fff;cursor:pointer}
.lt-ok{padding:10px;background:#e6ffed;border:1px solid #b7ebc6;border-radius:8px;margin-bottom:10px}
.lt-err{padding:10px;background:#ffecec;border:1px solid #ffb3b3;border-radius:8px;margin-bottom:10px}
.lt-calc-res{padding:10px;background:#eef5ff;border:1px solid #c8ddff;border-radius:8px;margin:10px 0}