.header {
    background: #ffffff;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: all 0.3s ease;
    animation: slideDown 0.5s ease-out;
}

.header.scrolled {
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.12);
}

.header .header-wrap {
    max-width: 1240px;
    margin: 0 auto;
    padding: 0 40px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.header .header-wrap .header-logo {
    display: flex;
    align-items: center;
    margin-right: auto;
}

.header .header-wrap .header-logo .header-logo-img {
    height: 45px;
    width: auto;
    transition: all 0.3s ease;
    cursor: pointer;
}

.header .header-wrap .header-logo .header-logo-img:hover {
    transform: scale(1.05);
}

/* Navigation */
.header .header-wrap .header-nav {
    display: flex;
    justify-content: flex-end;
    margin-right: 20px;
}

.header .header-wrap .header-nav .header-nav-list {
    display: flex;
    align-items: center;
    list-style: none;
    gap: 40px;
    margin: 0;
    padding: 0;
}

.header .header-wrap .header-nav .header-nav-list .header-nav-item {
    position: relative;
}

.header .header-wrap .header-nav .header-nav-list .header-nav-item .header-nav-link {
    color: #1f2937;
    text-decoration: none;
    font-size: 15px;
    font-weight: 500;
    padding: 8px 0;
    position: relative;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 5px;
}

.header .header-wrap .header-nav .header-nav-list .header-nav-item .header-nav-link .iconfont {
    font-size: 12px;
    transition: transform 0.3s ease;
}

.header .header-wrap .header-nav .header-nav-list .header-nav-item.has-dropdown.active .header-nav-link .iconfont {
    transform: rotate(180deg);
}

.header .header-wrap .header-nav .header-nav-list .header-nav-item .header-nav-link:hover {
    color: #14b8a6;
}

.header .header-wrap .header-nav .header-nav-list .header-nav-item .header-nav-drop {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    margin-top: 15px;
    background: #ffffff;
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    min-width: 380px;
    z-index: 100;
}

.header .header-wrap .header-nav .header-nav-list .header-nav-item .header-nav-drop::before {
    content: '';
    position: absolute;
    top: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 0;
    border-left: 8px solid transparent;
    border-right: 8px solid transparent;
    border-bottom: 8px solid #ffffff;
}

.header .header-wrap .header-nav .header-nav-list .header-nav-item.has-dropdown:hover .header-nav-drop,
.header .header-wrap .header-nav .header-nav-list .header-nav-item.has-dropdown.active .header-nav-drop {
    opacity: 1;
    visibility: visible;
    margin-top: 20px;
}

.header .header-wrap .header-nav .header-nav-list .header-nav-item .header-nav-drop .header-drop-wrap {
    padding: 25px;
}

.header .header-wrap .header-nav .header-nav-list .header-nav-item .header-nav-drop .header-drop-wrap .header-drop-title {
    font-size: 12px;
    font-weight: 600;
    color: #6b7280;
    letter-spacing: 0.5px;
    margin: 0 0 20px 0;
    text-transform: uppercase;
}

.header .header-wrap .header-nav .header-nav-list .header-nav-item .header-nav-drop .header-drop-wrap .header-drop-list {
    list-style: none;
    padding: 0;
    margin: 0 0 15px 0;
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.header .header-wrap .header-nav .header-nav-list .header-nav-item .header-nav-drop .header-drop-wrap .header-drop-list .header-drop-item .header-drop-link {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 12px 15px;
    text-decoration: none;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.header .header-wrap .header-nav .header-nav-list .header-nav-item .header-nav-drop .header-drop-wrap .header-drop-list .header-drop-item .header-drop-link:hover {
    background: #f9fafb;
}

.header .header-wrap .header-nav .header-nav-list .header-nav-item .header-nav-drop .header-drop-wrap .header-drop-list .header-drop-item .header-drop-link .header-drop-icon {
    width: 40px;
    height: 40px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    flex-shrink: 0;
}

.header .header-wrap .header-nav .header-nav-list .header-nav-item .header-nav-drop .header-drop-wrap .header-drop-list .header-drop-item .header-drop-link .header-drop-icon.blue {
    background: #dbeafe;
    color: #3b82f6;
}

.header .header-wrap .header-nav .header-nav-list .header-nav-item .header-nav-drop .header-drop-wrap .header-drop-list .header-drop-item .header-drop-link .header-drop-icon.green {
    background: #d1fae5;
    color: #10b981;
}

.header .header-wrap .header-nav .header-nav-list .header-nav-item .header-nav-drop .header-drop-wrap .header-drop-list .header-drop-item .header-drop-link .header-drop-icon.purple {
    background: #e9d5ff;
    color: #a855f7;
}

.header .header-wrap .header-nav .header-nav-list .header-nav-item .header-nav-drop .header-drop-wrap .header-drop-list .header-drop-item .header-drop-link .header-drop-icon.orange {
    background: #fed7aa;
    color: #f97316;
}

.header .header-wrap .header-nav .header-nav-list .header-nav-item .header-nav-drop .header-drop-wrap .header-drop-list .header-drop-item .header-drop-link .header-drop-icon.pink {
    background: #fce7f3;
    color: #ec4899;
}

.header .header-wrap .header-nav .header-nav-list .header-nav-item .header-nav-drop .header-drop-wrap .header-drop-list .header-drop-item .header-drop-link .header-drop-content {
    flex: 1;
}

.header .header-wrap .header-nav .header-nav-list .header-nav-item .header-nav-drop .header-drop-wrap .header-drop-list .header-drop-item .header-drop-link .header-drop-content .header-drop-content-title {
    font-size: 15px;
    font-weight: 600;
    color: #1f2937;
    margin: 0 0 4px 0;
}

.header .header-wrap .header-nav .header-nav-list .header-nav-item .header-nav-drop .header-drop-wrap .header-drop-list .header-drop-item .header-drop-link .header-drop-content .header-drop-content-desc {
    font-size: 13px;
    color: #6b7280;
    margin: 0;
    line-height: 1.4;
}

.header .header-wrap .header-nav .header-nav-list .header-nav-item .header-nav-drop.simple {
    min-width: 280px;
}

.header .header-wrap .header-nav .header-nav-list .header-nav-item .header-nav-drop .header-drop-wrap .header-simple-list {
    list-style: none;
    padding: 0;
    margin: 0 0 15px 0;
    display: flex;
    flex-direction: column;
    gap: 3px;
}

.header .header-wrap .header-nav .header-nav-list .header-nav-item .header-nav-drop .header-drop-wrap .header-simple-list .header-simple-item .header-simple-link {
    display: block;
    padding: 10px 15px;
    color: #1f2937;
    text-decoration: none;
    font-size: 15px;
    border-radius: 6px;
    transition: all 0.3s ease;
}

.header .header-wrap .header-nav .header-nav-list .header-nav-item .header-nav-drop .header-drop-wrap .header-simple-list .header-simple-item .header-simple-link:hover {
    background: #f9fafb;
    color: #14b8a6;
    padding-left: 20px;
}

.header .header-wrap .header-nav .header-nav-list .header-nav-item .header-nav-drop .header-drop-wrap .header-drop-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 15px;
    background: #f9fafb;
    border-radius: 8px;
    text-decoration: none;
    color: #6b7280;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.3s ease;
}

.header .header-wrap .header-nav .header-nav-list .header-nav-item .header-nav-drop .header-drop-wrap .header-drop-footer:hover {
    background: #f3f4f6;
    color: #1f2937;
}

.header .header-wrap .header-nav .header-nav-list .header-nav-item .header-nav-drop .header-drop-wrap .header-drop-footer.tips {
    color: #14b8a6;
}

.header .header-wrap .header-nav .header-nav-list .header-nav-item .header-nav-drop .header-drop-wrap .header-drop-footer.tips:hover {
    background: #e0f7f4;
    color: #0d9488;
}

.header .header-wrap .header-nav .header-nav-list .header-nav-item .header-nav-drop .header-drop-wrap .header-drop-footer .iconfont {
    font-size: 14px;
}

.header .header-wrap .header-actions {
    display: flex;
    align-items: center;
    gap: 15px;
}

.header .header-wrap .header-actions .header-search-btn {
    width: 40px;
    height: 40px;
    border: none;
    background: #f3f4f6;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 18px;
    color: #6b7280;
}

.header .header-wrap .header-actions .header-search-btn:hover {
    background: #e5e7eb;
    color: #1f2937;
}

.header .header-wrap .header-actions .header-search-btn:active {
    transform: scale(0.95);
}

.header .header-wrap .header-mobile-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.header .header-wrap .header-mobile-btn .header-mobile-line {
    width: 25px;
    height: 3px;
    background: #1f2937;
    border-radius: 2px;
    transition: all 0.3s ease;
}

.header .header-wrap .header-mobile-btn.active .header-mobile-line:nth-child(1) {
    transform: rotate(45deg) translate(7px, 7px);
}

.header .header-wrap .header-mobile-btn.active .header-mobile-line:nth-child(2) {
    opacity: 0;
}

.header .header-wrap .header-mobile-btn.active .header-mobile-line:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

/* Tablet */
@media (max-width: 1024px) {
    .header .header-wrap {
        padding: 0 20px;
    }

    .header .header-wrap .header-logo {
        margin-right: auto;
    }

    .header .header-wrap .header-nav {
        margin-right: 15px;
    }

    .header .header-wrap .header-nav .header-nav-list {
        gap: 25px;
    }

    .header .header-wrap .header-nav .header-nav-list .header-nav-item .header-nav-link {
        font-size: 14px;
    }

    .header .header-wrap .header-nav .header-nav-list .header-nav-item .header-nav-drop {
        min-width: 320px;
    }
}

/* Mobile */
@media (max-width: 768px) {
    .header .header-wrap {
        height: 60px;
        padding: 0 15px;
    }

    .header .header-wrap .header-logo {
        margin-right: 0;
    }

    .header .header-wrap .header-logo .header-logo-img {
        height: 35px;
    }

    .header .header-wrap .header-mobile-btn {
        display: flex;
    }

    .header .header-wrap .header-nav {
        position: fixed;
        top: 60px;
        left: -120%;
        width: auto;
        height: calc(100vh - 60px);
        background: #ffffff;
        flex-direction: column;
        justify-content: flex-start;
        padding: 30px 20px;
        transition: left 0.3s ease;
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
        margin-right: 0;
        z-index: 999;
    }

    .header .header-wrap .header-nav.active {
        left: 0;
    }

    .header .header-wrap .header-nav .header-nav-list {
        flex-direction: column;
        gap: 0;
        align-items: flex-start;
    }

    .header .header-wrap .header-nav .header-nav-list .header-nav-item {
        width: 100%;
        border-bottom: 1px solid #e5e7eb;
    }

    .header .header-wrap .header-nav .header-nav-list .header-nav-item .header-nav-link {
        display: flex;
        padding: 18px 0;
        font-size: 16px;
        width: 100%;
        justify-content: space-between;
        align-items: center;
    }

    /* 确保移动端下拉箭头显示 */
    .header-nav-item.has-dropdown > .header-nav-link > .iconfont,
    .header .header-nav .header-nav-list .header-nav-item.has-dropdown .header-nav-link .iconfont {
        display: inline-block !important;
        font-size: 18px !important;
        color: #6b7280 !important;
        margin-left: 8px !important;
        transition: transform 0.3s ease !important;
    }

    /* 展开时箭头旋转 */
    .header-nav-item.has-dropdown.active > .header-nav-link > .iconfont,
    .header .header-nav .header-nav-list .header-nav-item.has-dropdown.active .header-nav-link .iconfont {
        transform: rotate(180deg) !important;
        color: #14b8a6 !important;
    }

    .header .header-wrap .header-nav .header-nav-list .header-nav-item .header-nav-drop {
        position: static;
        transform: none;
        margin-top: 0;
        box-shadow: none;
        border-radius: 0;
        min-width: 100%;
        width: 100%;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease;
        opacity: 0;
    }

    .header .header-wrap .header-nav .header-nav-list .header-nav-item .header-nav-drop::before {
        display: none;
    }

    .header .header-wrap .header-nav .header-nav-list .header-nav-item.has-dropdown.active .header-nav-drop {
        max-height: 1000px;
        margin-top: 10px;
        margin-bottom: 10px;
        opacity: 1;
    }

    .header .header-wrap .header-nav .header-nav-list .header-nav-item .header-nav-drop .header-drop-wrap {
        padding: 15px 0;
    }

    .header .header-wrap .header-nav .header-nav-list .header-nav-item .header-nav-drop .header-drop-wrap .header-drop-title {
        font-size: 11px;
        margin-bottom: 15px;
        padding-left: 0;
    }

    .header .header-wrap .header-nav .header-nav-list .header-nav-item .header-nav-drop .header-drop-wrap .header-drop-list {
        gap: 0;
    }

    .header .header-wrap .header-nav .header-nav-list .header-nav-item .header-nav-drop .header-drop-wrap .header-drop-list .header-drop-item .header-drop-link {
        padding: 12px 0;
        gap: 12px;
    }

    .header .header-wrap .header-nav .header-nav-list .header-nav-item .header-nav-drop .header-drop-wrap .header-drop-list .header-drop-item .header-drop-link .header-drop-icon {
        width: 36px;
        height: 36px;
        font-size: 18px;
    }

    .header .header-wrap .header-nav .header-nav-list .header-nav-item .header-nav-drop .header-drop-wrap .header-drop-list .header-drop-item .header-drop-link .header-drop-content .header-drop-content-title {
        font-size: 14px;
    }

    .header .header-wrap .header-nav .header-nav-list .header-nav-item .header-nav-drop .header-drop-wrap .header-drop-list .header-drop-item .header-drop-link .header-drop-content .header-drop-content-desc {
        font-size: 12px;
    }

    .header .header-wrap .header-nav .header-nav-list .header-nav-item .header-nav-drop .header-drop-wrap .header-simple-list {
        gap: 0;
    }

    .header .header-wrap .header-nav .header-nav-list .header-nav-item .header-nav-drop .header-drop-wrap .header-simple-list .header-simple-item .header-simple-link {
        padding: 12px 0;
        font-size: 14px;
        border-radius: 0;
    }

    .header .header-wrap .header-nav .header-nav-list .header-nav-item .header-nav-drop .header-drop-wrap .header-simple-list .header-simple-item .header-simple-link:hover {
        padding-left: 10px;
        background: transparent;
    }

    .header .header-wrap .header-nav .header-nav-list .header-nav-item .header-nav-drop .header-drop-wrap .header-drop-footer {
        padding: 12px 0;
        background: transparent;
        border-top: 1px solid #e5e7eb;
        border-radius: 0;
        margin-top: 10px;
    }

    .header .header-wrap .header-actions {
        position: static;
    }

    .header .header-wrap .header-actions .header-search-btn {
        display: none;
    }
}
@keyframes slideDown {
    from {
        transform: translateY(-100%);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}