* { box-sizing: border-box; }
html, body {
  margin: 0;
  padding: 0;
  font-family: Arial, Helvetica, sans-serif;
  background: #f5f6fa;
  color: #111;
}

.preheader {
  display: none !important;
  visibility: hidden;
  opacity: 0;
  height: 0;
  width: 0;
  overflow: hidden;
}

.wrapper {
  max-width: 680px;
  margin: 28px auto;
  padding: 16px;
  .lead {
        margin: 0;
        color: #475569;
        font-size: 15px;
    }
}

.card {
  background: #ffffff;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 6px 20px rgba(95, 108, 136, 0.411);
}

.header {
  padding: 20px;
  text-align: center;
  background: #000000;
}

.logo {
  width: 100%;
  height: auto;
}

.main-title {
  padding: 24px;
  text-align: center;
  background: #e8ebf5;
  h1 {
        margin: 0 0 8px;
        font-size: 26px;
        color: #28395E;
    }
}

.columns {
  display: flex;
  gap: 16px;
  padding: 16px 24px;
  .col {
    flex: 1;
    background: #fbfbff;
    border-radius: 6px;
    padding: 12px;
    text-align: center;
        h3 {
            margin: 10px 0 6px;
            font-size: 16px;
            color: #28395E;
        }
        p {
            margin: 0 0 12px;
            color: #475569;
            font-size: 14px;
            text-align: center;
        }
        .thumb {
            width: 100%;
            border-radius: 4px;
            height: auto;
            display: block;
        }
    }
}

.full {
  padding: 0 24px 24px;
  text-align: center;
    h2{
        margin: 12px 0;
        font-size: 18px;
        color: #28395E;
    }
    p{
        color: #475569;
    }
}

.btn.ghost {
  background: transparent;
  color: #28395E;
  border: 1px solid #28395E;
  &:hover{
        background: #28395E;
        color: #fff;
  }
}

.btn {
  display: inline-block;
  padding: 10px 14px;
  border-radius: 6px;
  background: #28395E;
  color: #fff;
  text-decoration: none;
  font-size: 14px;
  transition: all 0.3s ease;
  &:hover{
    background: #3d5289;
  }
}

.footer {
  padding: 18px;
  text-align: center;
  font-size: 12px;
  color: #6b7280;
    a {
        color: #28395E;
        text-decoration: none;
    }
}


@media (max-width:600px) {
  .columns {
    flex-direction: column;
    padding: 12px;
  }

  .main-title h1 {
    font-size: 22px;
  }

  .wrapper {
    margin: 16px;
  }
}