/* 顶部蓝色条样式 */
.wst-top-bar {
    background-color: #4A90E2;
    width: 100%;
    height: 35px;
    line-height: 35px;
}

.wst-top-bar-inner {
    width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.wst-top-promo {
    display: flex;
    align-items: center;
    color: #fff;
    font-size: 13px;
}

.promo-icon {
    margin-right: 8px;
    font-size: 16px;
}

.promo-text {
    color: #fff;
}

/* 顶部“立即咨询”链接样式 */
.promo-link {
    color: #fff;
    text-decoration: underline;
}

.promo-link:hover {
    color: #ffd666;
    text-decoration: underline;
}

.wst-top-links {
    display: flex;
    align-items: center;
    gap: 15px;
}

.top-link {
    color: #fff;
    text-decoration: none;
    font-size: 13px;
}

.top-link:hover {
    text-decoration: underline;
}

.lang-icon {
    display: inline-block;
    width: 24px;
    height: 24px;
    line-height: 24px;
    text-align: center;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 3px;
    color: #fff;
    font-size: 12px;
    cursor: pointer;
}

/* 主头部区域 */
.wst-main-header {
    background-color: #f5f5f5;
    width: 100%;
    padding: 20px 0;
    position: relative;
    box-sizing: border-box;
}

.wst-main-header-inner {
    width: 1200px;
    max-width: 100%;
    margin: 0 auto;
    padding: 0 20px;
    box-sizing: border-box;
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 60px;
}

.wst-logo {
    flex-shrink: 0;
    display: flex;
    align-items: center;
}

.wst-logo img {
    display: block;
    height: 60px;
    width: auto;
}

/* 右侧导航 + 搜索 */
.wst-header-right {
    display: flex;
    align-items: center;
    gap: 40px;
    flex-shrink: 0;
}

/* 导航链接 */
.wst-nav-links {
    display: flex;
    gap: 36px;
    align-items: center;
    margin: 0;
}

.wst-nav-links a {
    position: relative;
    display: flex;
    align-items: center;
    color: #FF5933;
    text-decoration: none;
    font-size: 15px;
    white-space: nowrap;
    line-height: 1.4;
}

.wst-nav-links a::before {
    content: '';
    position: absolute;
    left: 0;
    width: 100%;
    height: 4px;
    background-color: #FF5F3D;
    opacity: 0;
    transition: opacity 0.25s ease;
    top: calc(-20px - (60px - 1.4em) / 2);
}

.wst-nav-links a:hover::before,
.wst-nav-links a.nav-active::before {
    opacity: 1;
}

.wst-nav-links a:hover {
    color: #FF5933;
}

.wst-nav-links .nav-en {
    color: #FF5933;
    font-style: italic;
    text-transform: uppercase;
    font-weight: 500;
}

.wst-nav-links .nav-cn {
    color: #333;
    font-weight: 400;
}

/* 搜索图标 */
.wst-nav-search {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    line-height: 0;
}

.wst-nav-search img {
    width: 22px;
    height: 22px;
    object-fit: contain;
    opacity: 0.85;
    transition: opacity 0.25s ease;
}

.wst-nav-search:hover img {
    opacity: 1;
}

.wst-search-hidden {
    position: absolute;
    width: 0;
    height: 0;
    padding: 0;
    border: 0;
    opacity: 0;
    pointer-events: none;
    overflow: hidden;
}

/* 清除浮动 */
.wst-clear {
    clear: both;
}