body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: #f4f7f6;
    color: #333;
    line-height: 1.6;
    padding: 20px;
}
.container {
    max-width: 600px;
    margin: 0 auto;
    background: #fff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
}
h1 {
    font-size: 24px;
    margin-top: 0;
    color: #2c3e50;
    margin-bottom: 20px;
}
.info-box {
    background: #eef2f5;
    padding: 15px;
    border-radius: 6px;
    margin-bottom: 25px;
    font-size: 15px;
    border-left: 4px solid #2980b9;
}
.info-box div {
    margin-bottom: 5px;
}
.info-box div:last-child {
    margin-bottom: 0;
}
.info-box strong {
    color: #2c3e50;
    display: inline-block;
    width: 130px;
}
.form-group {
    margin-bottom: 20px;
}
label {
    display: block;
    font-weight: 600;
    margin-bottom: 5px;
}
input[type="text"], input[type="email"] {
    width: 100%;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 4px;
    box-sizing: border-box;
    font-family: inherit;
}
.checkbox-group {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
    font-weight: normal;
}
.checkbox-group input {
    width: auto;
}
.price-display {
    font-size: 20px;
    font-weight: bold;
    color: #27ae60;
    background: #eafaf1;
    padding: 15px;
    border-radius: 6px;
    text-align: center;
    margin-bottom: 20px;
}
.price-note {
    display: block;
    font-size: 12px;
    color: #7f8c8d;
    font-weight: normal;
    margin-top: 5px;
}
button {
    background: #2980b9;
    color: white;
    border: none;
    padding: 12px 20px;
    width: 100%;
    font-size: 16px;
    border-radius: 4px;
    cursor: pointer;
    font-weight: bold;
    transition: background 0.3s;
}
button:hover {
    background: #2471a3;
}
.success-msg {
    text-align: center;
    padding: 40px 20px;
}
.success-msg h2 {
    color: #27ae60;
}