body {
    margin: 0;
    font-family: 'Noto Sans JP', sans-serif;
    background: #f4f4f4;
    color: #222;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: auto;
    padding: 20px;
}

/* Header */
header {
    background: #2a2a2a;
    color: white;
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

header h1 {
    font-size: 1.8em;
    margin: 0;
}

nav ul {
    list-style: none;
    display: flex;
    gap: 25px;
    padding: 0;
    margin: 0;
}

nav ul li a {
    color: #66ffcc;
    text-decoration: none;
    font-weight: bold;
}

/* Hero Section */
.hero {
    background: #fff;
    padding: 30px;
    border-radius: 6px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    text-align: center;
    margin-bottom: 30px;
}

/* Intro Section */
.intro {
    background: #e6f2f1;
    padding: 20px;
    border-radius: 8px;
    margin-bottom: 30px;
}

/* Cards Layout */
.cards {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
    justify-content: space-between;
}

.card {
    background: white;
    border: 1px solid #ccc;
    border-radius: 6px;
    padding: 15px;
    width: 32%;
    box-sizing: border-box;
    box-shadow: 0 2px 6px rgba(0,0,0,0.1);
    text-align: center;
}

.card img {
    width: 100%;
    height: auto;
    border-radius: 4px;
    margin-bottom: 10px;
}

.btn {
    display: inline-block;
    margin-top: 10px;
    padding: 10px 20px;
    background: #0073e6;
    color: white;
    text-decoration: none;
    border-radius: 4px;
    font-size: 0.9rem;
}

footer {
    background: #222;
    color: white;
    text-align: center;
    padding: 20px;
    margin-top: 40px;
}

footer a {
    color: #66ffcc;
    text-decoration: none;
    margin: 0 10px;
}