:root {
    --primary-color: #2196F3;
    --border-color: #e0e0e0;
    --hover-bg: #f8f8f8;
    --shadow: 0 8px 24px rgba(0,0,0,0.1);
    --radius: 6px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.menu-wrapper {
    position: relative;
    margin: 20px;
}

.trigger-button {
    position: relative;
    width: 40px;
    height: 40px;
    border: 1px solid var(--border-color);
    border-radius: 20px;
    background: white;
    cursor: pointer;
    overflow: hidden;
    transition: var(--transition), width 0.3s ease;
    display: flex;
    align-items: center;
    box-shadow: 0 2px 6px rgba(0,0,0,0.1);
}

.gear-icon {
    position: absolute;
    right: 8px;
    font-size: 24px;
    transition: var(--transition);
    width: 24px;
    text-align: center;
}

.button-text {
    position: absolute;
    left: 12px;
    white-space: nowrap;
    opacity: 0;
    transform: translateX(-10px);
    transition: var(--transition);
    font-weight: 500;
    color: #333;
}

.trigger-button:hover,
.trigger-button.force-hover {
    width: 115px;
    box-shadow: var(--shadow);
}

.trigger-button:hover .button-text,
.trigger-button.force-hover .button-text {
    opacity: 1;
    transform: translateX(0);
}

.menu-container {
    position: absolute;
    right: 0;
    top: calc(100% + 10px);
    width: 300px;
    max-height: 520px;
    overflow-x: hidden;
    overflow-y: auto;
    background: white;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    opacity: 0;
    transform: translateY(-10px);
    transition: var(--transition);
    visibility: hidden;
    padding: 1rem 0;
    z-index: 100;
}

.menu-container.show {
    opacity: 1;
    transform: translateY(0);
    visibility: visible;
}

.menu-group {
    border-bottom: 1px solid var(--border-color);
    transition: margin 0.3s ease;
}

.menu-header {
    padding: 12px 24px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background-color 0.2s;
}

.menu-header:hover {
    background: var(--hover-bg);
}

.menu-header::after {
    content: "+";
    color: #999;
    font-size: 18px;
    transition: transform 0.3s;
}

.menu-group.active .menu-header::after {
    content: "-";
}

.submenu {
    max-height: 0;
    opacity: 0;
    transform: translateY(-10px);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
    padding-left: 24px;
}

.menu-group.active .submenu {
    max-height: 500px;
    opacity: 1;
    transform: translateY(0);
}

.submenu-item {
    padding: 10px 0;
    color: #666;
    font-size: 14px;
    transition: all 0.2s;
}

.submenu-item:hover {
    color: var(--primary-color);
    transform: translateX(5px);
}

.gg {
    padding: 0 24px;
}

.gg-1 {
    width: 255px;
    height: 130px;
    overflow-x: hidden;
    overflow-y: auto;
}

.gg-2 {
    padding: 12px 7px;
    border-radius: 4px;
    background: #f5f5f5;
    font-size: 14px;
    color: #444;
    transition: var(--transition);
}
.dhl{
    padding: 0 24px;
    border-top: 1px solid var(--border-color);
}
.dhl-1{
    display: flex;
    width: 255px;
    height: 130px;
    overflow-x: hidden;
    overflow-y: auto;
    flex-wrap: wrap;
    flex-direction: column;
    justify-content: space-evenly;
    align-items: flex-start;
}
.link-item{
    display: block;
    padding: 10px 0;
    color: #666;
    font-size: 14px;
    transition: all 0.2s;
}
.copyright {
    padding: 16px 24px 0;
    color: #999;
    font-size: 12px;
    line-height: 1.6;
    border-top: 1px solid var(--border-color);
    margin-top: 16px;
}
.copyright>a{
    color: #999;
}
.copyright>a:hover{
    color: #4a4a4a;
}
.nav-container{
    display: flex;
    padding: 2px 24px;
    cursor: pointer;
    transition: background-color 0.2s;
    align-items: center;
    flex-direction: row;
    justify-content: space-between;
    border-bottom: 1px solid var(--border-color);
}
.page-selector{
    border: none;
    background: white;
    padding: 8px 12px;
    border-radius: 4px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    cursor: pointer;
}