* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Hiragino Maru Gothic ProN', 'Meiryo UI', Meiryo, 'メイリオ', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.8;
    color: #433f3f;
    background: #f5f5f5;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
}

.container {
    max-width: 600px;
    text-align: center;
}

h1 {
    font-size: 3.5em;
    font-weight: 900;
    margin-bottom: 0.1em;
    color: #555;
}

.subtitle {
    font-size: 1.7em;
    color: #666;
    margin-bottom: 0.8em;
    font-weight: 300;
}

.links {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 20px;
    margin-top: 2em;
}

.links a {
    color: #444;
    text-decoration: none;
    font-size: 3.5em;
    transition: all 0.3s ease;
    padding: 10px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 85px;
    height: 85px;
    border-radius: 50%;
}

.links a:hover {
    color: #0066cc;
    background: #f0f0f0;
    transform: scale(1.1);
}

.skills {
    margin-top: 3em;
    color: #666;
    font-size: 0.95em;
}

.skills span {
    display: inline-block;
    margin: 0 8px;
}

@media (max-width: 600px) {
    h1 {
        font-size: 2em;
    }

    .subtitle {
        font-size: 1em;
    }

    .links {
        flex-direction: column;
        gap: 10px;
    }
}