body { 
    font-family: sans-serif; 
    display: flex; 
    justify-content: center; 
    padding: 20px; 
    background-color: #f4f7f6; 
}

.container { 
    background: white; 
    padding: 30px; 
    border-radius: 10px; 
    box-shadow: 0 4px 6px rgba(0,0,0,0.1); 
    width: 100%; 
    max-width: 600px;
}

h1 { color: #333; font-size: 24px; text-align: center; }

.calendar-wrapper {
    position: relative;
    padding-bottom: 100%; 
    height: 0;
    overflow: hidden;
    margin: 30px auto;
    max-width: 900px;
    border: 2px solid #eee;
    border-radius: 12px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
}

@media screen and (max-width: 768px) {
    .calendar-wrapper {
        width: 100%;
        margin: 10px 0;
        padding-bottom: 180%; 
        border: none;
    }
}

.calendar-wrapper iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.iphone-notice {
    margin: 10px 0 20px 0;
    padding: 10px;
    background-color: #fcfcfc;
    border-left: 3px solid #ccc;
}

.iphone-notice p {
    font-size: 10px;
    color: #666;
    line-height: 1.5;
    margin: 0;
}

@media screen and (max-width: 768px) {
    .iphone-notice {
        margin: 5px 0 15px 0;
    }
}

label { display: block; margin-top: 15px; color: #666; }
input, select, button { 
    width: 100%; 
    padding: 12px; 
    margin-top: 5px; 
    border: 1px solid #ddd; 
    border-radius: 5px; 
    box-sizing: border-box; 
}

button { 
    background-color: #4285f4; 
    color: white; 
    border: none; 
    margin-top: 25px; 
    cursor: pointer; 
    font-weight: bold; 
}

button:hover { background-color: #357ae8; }

.note { font-size: 12px; color: #999; margin-top: 10px; text-align: center; }

.radio-label {
    display: flex;
    align-items: center;
    margin-bottom: 10px;
    cursor: pointer;
}

.radio-label input[type="radio"] {
    margin-right: 8px;
    width: 18px;
    height: 18px;
}