/* 基本的なスタイルリセット */
body, h1, h2, ul, li, p, form, button {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-image: url('https://images.unsplash.com/photo-1518770660439-4636190af475?q=80&w=2070&auto=format&fit=crop');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
}

header {
    background: #333;
    color: #fff;
    padding: 1rem 0;
    text-align: center;
    position: sticky;
    top: 0;
    z-index: 1000;
}

header h1 {
    margin-bottom: 0.5rem;
}

nav ul {
    list-style: none;
}

nav ul li {
    display: inline;
    margin: 0 15px;
}

nav a {
    color: #fff;
    text-decoration: none;
    font-weight: bold;
}

nav a:hover {
    text-decoration: underline;
}

main {
    max-width: 1100px;
    margin: 0 auto;
    padding: 20px;
    background-color: rgba(255, 255, 255, 0.9);
    border-radius: 8px;
    margin-top: 20px;
    margin-bottom: 20px;
}

section {
    padding: 40px 20px;
    border-bottom: 1px solid #eee;
}

section:last-child {
    border-bottom: none;
}

h2 {
    text-align: left;
    margin-bottom: 40px;
    font-size: 2rem;
    color: #333;
}

#services ul {
    list-style: none;
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}

#services li {
    background: #f4f4f4;
    padding: 20px;
    border-radius: 8px;
    width: 300px;
    text-align: center;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

#contact form {
    max-width: 600px;
    margin: 0 auto;
    display: grid;
    gap: 20px;
}

#contact label {
    font-weight: bold;
}

#contact input,
#contact textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 4px;
}

#contact button {
    background: #333;
    color: #fff;
    padding: 15px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1rem;
}

#contact button:hover {
    background: #555;
}