/* ===== 响应式导航栏 - 汉堡按钮 ===== */

/* 汉堡按钮 - 桌面端隐藏 */
.nav-toggle {
    display: none;
    background: none;
    border: none;
    color: #fff;
    font-size: 24px;
    cursor: pointer;
    padding: 6px 8px;
    border-radius: 6px;
    line-height: 1;
    flex-shrink: 0;
    align-items: center;
    justify-content: center;
    z-index: 160;
}
.nav-toggle:hover { background: rgba(255,255,255,.15); }

/* 移动端折叠 - 导航由 nav-component.js 控制 */
@media (max-width: 768px) {
    .header { position: relative; }
    .nav-toggle { display: flex; }
}