html, body {
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100vh;
}

body {
    background-image: url('../img/image_e0debfee.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    background-attachment: fixed;/*背景固定*/

    display: flex;
    justify-content: center;
    align-items: center;

    font-family: 'Helvetica Neue', Arial, 'Hiragino Kaku Gothic ProN', sans-serif;
}

.container {
    width: 100%;
    max-width: 450px;/*スマホやパソコンで大きくなりすぎないよう制限*/
    padding: 20px;
    box-sizing: border-box;
}

.card {
    background: rgba(255, 255, 255, 0.75);/*少し透ける白*/
    backdrop-filter: blur(8px);/*後ろの背景をぼかす*/
    -webkit-backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.4);
    border-radius: 20px;
    padding: 40px 30px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
}

h2 {
    margin-top: 0;
    margin-bottom: 25px;
    color: #333333;
    text-align: center;
}

p {
    margin-bottom: 20px;
}

label {
    color: #444444;
    font-size: 14px;
    font-weight: bold
}

input[type="text"],
input[type="email"],
input[type="tel"],
textarea {
    width: 100%;
    padding: 10px;
    margin-top: 5px;
    border: 1px solid #ddd;
    border-radius: 8px;
    box-sizing: border-box;
    font-size: 16px;
    background: rgba(255, 255, 255, 0.9);
}

textarea {
    height: 120px;
    resize: vertical;/*上下方向のみサイズ変更可能*/
}

button[type="submit"] {
    width: 100%;
    padding: 12px;
    background-color: #A3E4D7;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
    transition: background-color 0.3s;
}

button[type="submit"]:hover {
    background-color: #76D7C4;
}

.return {
    text-align: center;
}

a {
    text-decoration-line: none;
}



/*バナーの調整*/
img, 
iframe, 
ins {
    max-width: 100% !important;
    height: auto !important;
}