/* common.css - 共通スタイル */
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background: #f5f5f5;
    color: #333;
    min-height: 100vh;
    padding-top: 50px;
}
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: #fff;
    border-bottom: 1px solid #eee;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 12px 20px;
    z-index: 1000;
}
.site-logo {
    font-size: 1.2rem;
    font-weight: bold;
    color: #333;
    text-decoration: none;
}
.site-nav {
    position: absolute;
    right: 20px;
    display: flex;
    gap: 20px;
}
.site-nav a {
    color: #666;
    text-decoration: none;
    font-size: 0.9rem;
}
.site-nav a::before { content: '▸ '; color: #e94560; }
.site-nav a:hover { color: #e94560; }
.site-nav a.active { color: #e94560; font-weight: bold; }
.sex-male { background: #e3f2fd; color: #1976d2; }
.sex-female { background: #fce4ec; color: #c2185b; }
.win { color: #43a047; }
.loss { color: #e53935; }
footer {
    text-align: center;
    padding: 40px 0;
    color: #999;
    font-size: 0.8rem;
}
footer a { color: #e94560; text-decoration: none; }
@media (max-width: 600px) {
    .site-header { flex-direction: column; gap: 4px; }
    .site-nav { position: static; }
    body { padding-top: 70px; }
    .site-nav { gap: 12px; }
    .site-nav a { font-size: 0.8rem; }
}