.dingding-nav {
    width: 100%;
          position: sticky;
    top: 0;
    z-index: 999;
    background-color: #fff;
    border-bottom: 1px solid #e2e2e2;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";
}

.dd-nav-container {
  

    max-width: 1440px;
    margin: 0 auto;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
}

.dd-nav-left {
    display: flex;
    align-items: center;
    gap: 12px;
}

.feishu-logo-img {
    height: 32px;
    width: auto;
}

.feishu-brand-text {
    font-size: 18px;
    font-weight: 600;
    color: #1f2329;
    letter-spacing: 0.5px;
}

.dd-nav-center {
    display: flex;
    align-items: center;
    gap: 32px;
    flex: 1;
    justify-content: center;
}

.dd-nav-item {
    display: flex;
    align-items: center;
    font-size: 15px;
    color: #1f2329;
    text-decoration: none;
    cursor: pointer;
    position: relative;
    transition: color 0.2s;
}

.dd-nav-item.active {
    color: #3370ff;
}

.dd-nav-item:hover {
    color: #3370ff;
}

.feishu-chevron {
    width: 10px;
    height: 10px;
    margin-left: 4px;
    border-right: 1.5px solid #1f2329;
    border-bottom: 1.5px solid #1f2329;
    transform: rotate(45deg);
    margin-bottom: 3px;
    transition: border-color 0.2s;
}

.dd-nav-item:hover .feishu-chevron {
    border-color: #3370ff;
}

.feishu-badge-new {
    position: absolute;
    top: -8px;
    right: -24px;
    background-color: #e8f3ff;
    color: #3370ff;
    font-size: 10px;
    padding: 1px 4px;
    border-radius: 8px;
    font-weight: 600;
    line-height: 1.2;
    transform: scale(0.9);
}

.dd-nav-right {
    display: flex;
    align-items: center;
    gap: 20px;
}

.feishu-icon-phone {
    width: 20px;
    height: 20px;
    background-color: #1f2329; 
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 12px;
}

.dd-nav-link {
    font-size: 15px;
    color: #1f2329;
    text-decoration: none;
    transition: color 0.2s;
}

.dd-nav-link:hover {
    color: #3370ff;
}

.feishu-btn {
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
    display: inline-block;
}

.feishu-btn-outline {
    border: 1px solid #3370ff;
    color: #3370ff;
    background: transparent;
}

.feishu-btn-outline:hover {
    background-color: rgba(51, 112, 255, 0.05);
}

.feishu-btn-primary {
    background-color: #3370ff;
    color: white;
    border: 1px solid #3370ff;
}

.feishu-btn-primary:hover {
    background-color: #2b60e6;
    border-color: #2b60e6;
}

.feishu-mobile-menu-btn {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 24px;
    height: 18px;
    cursor: pointer;
}

.feishu-mobile-menu-btn span {
    display: block;
    height: 2px;
    width: 100%;
    background-color: #1f2329;
    border-radius: 2px;
}

@media screen and (max-width: 1024px) {
    .dd-nav-center {
        display: none;
    }

    .dd-nav-right .dd-nav-link,
    .dd-nav-right .feishu-btn-outline {
        display: none; 
    }
    
    .dd-nav-right {
        gap: 12px;
    }

    .feishu-mobile-menu-btn {
        display: flex;
        margin-left: 12px;
    }
}