body {
    margin: 0;
    padding: 0;
    background: #f3f7fb;
    color: #2f3b4a;
    font-family: Verdana, Geneva, sans-serif;
}

form {
    margin: 0;
}

.page-shell {
    display: flex;
    justify-content: center;
    padding: 24px 16px;
}

.card {
    width: min(100%, 760px);
    background: #ffffff;
    border: 1px solid #dfe9f2;
    border-radius: 8px;
    box-shadow: 0 4px 16px rgba(9, 75, 138, 0.12);
    padding: 24px;
    box-sizing: border-box;
}

.hero-image {
    display: block;
    width: 100%;
    max-width: 500px;
    height: auto;
    margin: 0 auto 20px auto;
}

h1 {
    margin: 0 0 20px 0;
    text-align: center;
    font-size: 24px;
    color: #094b8a;
}

.form-grid {
    display: grid;
    grid-template-columns: 220px 1fr;
    gap: 12px 16px;
    align-items: center;
    max-width: 560px;
    margin: 0 auto 18px auto;
}

.field-label {
    font-weight: bold;
    color: #2f4d6b;
}

.field-input {
    width: 100%;
    padding: 8px 10px;
    border: 1px solid #bcd0e0;
    border-radius: 4px;
    box-sizing: border-box;
}

.actions {
    text-align: center;
    margin-bottom: 16px;
}

.submit-button {
    border: 0;
    background: #5b9bd5;
    color: #ffffff;
    padding: 10px 18px;
    border-radius: 4px;
    font-weight: bold;
    cursor: pointer;
}

.submit-button:hover {
    background: #467fb0;
}

.result-box {
    max-width: 560px;
    margin: 0 auto 18px auto;
    padding: 12px;
    background: #ddebf7;
    border: 1px solid #c4dced;
    border-radius: 4px;
    text-align: center;
}

.result-label {
    color: #2f4d6b;
}

.footer {
    margin-top: 18px;
    padding-top: 14px;
    border-top: 1px solid #e8eef3;
    font-size: 11px;
    line-height: 1.6;
    text-align: center;
    color: #666666;
}

.footer p {
    margin: 4px 0;
}

@media (max-width: 640px) {
    .form-grid {
        grid-template-columns: 1fr;
    }
}