body {
    font-family: "Hiragino Sans", "Noto Sans JP", sans-serif;
    background: #fafafa;
    margin: 0;
    padding: 0;
    color: #333;
}

.closure-container {
    max-width: 800px;
    margin: 40px auto;
    padding: 20px 25px;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
}

h1 {
    text-align: center;
    font-size: 26px;
    margin-bottom: 20px;
}

.lead {
    text-align: center;
    font-size: 18px;
    margin-bottom: 30px;
    line-height: 1.8;
}

section {
    margin-bottom: 35px;
}

h2 {
    font-size: 20px;
    margin-bottom: 10px;
    border-left: 4px solid #ff6666;
    padding-left: 10px;
}

h3 {
    font-size: 16px;
    margin-top: 20px;
    margin-bottom: 5px;
}

ul {
    padding-left: 20px;
}

.thanks {
    text-align: center;
    font-size: 16px;
    margin-top: 40px;
    line-height: 1.8;
    color: #555;
}