.tns-form-wrap {
    font-family: inherit;
    max-width: 520px;
    margin: 0 auto;
    padding: 1.5rem;
    box-sizing: border-box;
}
.tns-heading    { margin: 0 0 .4rem; font-size: 1.4rem; }
.tns-subheading { margin: 0 0 1rem; color: #666; font-size: .95rem; }
.tns-row        { display: flex; gap: .5rem; flex-wrap: wrap; margin-bottom: .5rem; }
.tns-name-row .tns-input { flex: 1 1 120px; }
.tns-email-row .tns-input { flex: 1 1 200px; }
.tns-input {
    padding: .65rem .9rem;
    border: 1px solid #ccc;
    border-radius: 4px;
    font-size: 1rem;
    width: 100%;
    box-sizing: border-box;
}
.tns-input:focus { outline: none; border-color: #e85c35; box-shadow: 0 0 0 2px rgba(232,92,53,.2); }
.tns-btn {
    padding: .65rem 1.4rem;
    background: #e85c35;
    color: #fff;
    border: none;
    border-radius: 4px;
    font-size: 1rem;
    cursor: pointer;
    white-space: nowrap;
    transition: background .2s;
}
.tns-btn:hover   { background: #c94a27; }
.tns-btn:disabled { opacity: .6; cursor: not-allowed; }
.tns-message { margin-top: .6rem; font-size: .9rem; min-height: 1.2em; }
.tns-message.success { color: #2e7d32; }
.tns-message.error   { color: #c62828; }