body {
    margin: 0;
    font-family: "Noto Sans JP", sans-serif;
    background: #fefefe;
    color: #333;
    line-height: 1.6;
}

header {
    background: linear-gradient(135deg, #ffcbcb, #ffd3a5);
    padding: 3rem 1rem;
    text-align: center;
}

header h1 {
    font-size: 2.5rem;
    margin: 0;
    font-weight: bold;
}

header p {
    font-size: 1.2rem;
    margin-top: 1rem;
}

.container {
    max-width: 800px;
    margin: 2rem auto;
    padding: 0 1rem;
}

section {
    margin-bottom: 3rem;
}

h2 {
    font-size: 1.8rem;
    color: #ff6b6b;
    margin-bottom: 1rem;
}

ul {
    padding-left: 1.2rem;
}

.cta {
    background: #ffe8e0;
    border-radius: 12px;
    padding: 2rem;
    text-align: center;
}

input[type="email"] {
    padding: 0.6rem 1rem;
    font-size: 1rem;
    width: 70%;
    max-width: 400px;
    border: 1px solid #ccc;
    border-radius: 6px;
    margin-bottom: 1rem;
}

button {
    padding: 0.6rem 1.5rem;
    background-color: #ff6b6b;
    color: white;
    font-size: 1rem;
    border: none;
    border-radius: 6px;
    cursor: pointer;
}

button:hover {
    background-color: #ff5252;
}

footer {
    text-align: center;
    font-size: 0.9rem;
    color: #888;
    margin-bottom: 2rem;
}

a {
    text-decoration: none;
    color: blue;
}