/* Clean professional navigation */
.site-header-tech {
    --nav-text: #1e293b;
    --nav-text-muted: #64748b;
    --nav-accent: #2563eb;
    height: 64px;
    background: #ffffff;
    border-bottom: 1px solid #e2e8f0;
    position: relative;
}

.site-header-tech::before {
    display: none;
}

.site-header-tech::after {
    display: none;
}

.site-header-tech .nav-shell {
    position: relative;
    z-index: 1;
    gap: 48px;
    padding: 0 32px;
}

.site-header-tech .logo {
    flex: 0 0 auto;
    max-width: 140px;
}

.site-header-tech .logo img {
    width: auto;
    max-width: 140px;
    max-height: 36px;
    display: block;
}

.site-header-tech .brand-logo {
    display: flex;
    align-items: center;
    text-decoration: none;
}

.site-header-tech .logo img {
    width: auto;
    max-width: 140px;
    max-height: 36px;
    display: block;
}

.site-header-tech .nav-pc {
    flex: 1 1 auto;
    min-width: 0;
    height: 100%;
    position: relative;
    overflow: visible;
}

.site-header-tech .nav-pc .menu {
    width: 100%;
    height: 100%;
}

.site-header-tech .nav-pc .menu > ul {
    width: 100%;
    height: 100%;
    margin: 0;
    gap: 0;
    justify-content: center;
}

.site-header-tech .nav-pc .menu > ul > li {
    position: static;
    display: flex;
    align-items: center;
    height: 100%;
    padding: 0;
}

.site-header-tech .nav-pc a {
    text-transform: none;
}

.site-header-tech .nav-pc .menu > ul > li > a {
    position: relative;
    display: flex;
    align-items: center;
    height: 64px;
    padding: 0 20px;
    color: var(--nav-text-muted);
    font-size: 15px;
    font-weight: 500;
    transition: color 0.2s ease;
}

.site-header-tech .nav-pc .menu > ul > li > a::after {
    content: "";
    position: absolute;
    left: 20px;
    right: 20px;
    bottom: 0;
    height: 2px;
    background: var(--nav-accent);
    transform: scaleX(0);
    transition: transform 0.2s ease;
}

.site-header-tech .nav-pc .menu > ul > li > a span {
    position: relative;
    z-index: 1;
}

.site-header-tech .nav-pc .menu > ul > li:hover > a {
    color: var(--nav-text);
}

.site-header-tech .nav-pc .menu > ul > li:hover > a::after {
    transform: scaleX(1);
}

.site-header-tech .nav-pc .menu > ul > li > a.active {
    color: var(--nav-text);
}

.site-header-tech .nav-pc .menu > ul > li > a.active::after {
    transform: scaleX(1);
}

.site-header-tech .nav-pc .menu-dropdown-icon > a::after {
    margin-left: 6px;
    color: currentColor;
    opacity: 0.5;
}

.site-header-tech .rotate-icon > a::after {
    color: var(--nav-accent) !important;
    transform: rotate(180deg);
}

.site-header-tech .nav-pc .menu > ul > li > a.active::after {
    color: var(--nav-accent) !important;
}

.site-header-tech .nav-pc .menu > ul > li > .sub-menu {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    width: 100%;
    display: none;
    padding: 32px;
    background: #ffffff;
    border-top: 1px solid #e2e8f0;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.08);
    opacity: 0;
    transform: translateY(-8px);
    transition: all 0.2s ease;
    pointer-events: none;
}

.site-header-tech .nav-pc .menu > ul > li:hover > .sub-menu {
    display: flex;
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

.site-header-tech .nav-pc .menu > ul > li > .sub-menu::before {
    display: none;
}

.site-header-tech .nav-pc .menu > ul > li > .sub-menu::after {
    display: none;
}

.site-header-tech .nav-pc .menu > ul > li > .sub-menu > .sub-menu-list {
    flex: 1;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 4px;
}

.site-header-tech .nav-pc .menu > ul > li > .sub-menu > .sub-menu-list > .sub-menu-item + .sub-menu-item {
    margin-top: 0;
}

.site-header-tech .nav-pc .menu > ul > li > .sub-menu > .sub-menu-list > .sub-menu-item a {
    display: block;
    padding: 12px 16px;
    color: var(--nav-text-muted);
    font-size: 14px;
    font-weight: 500;
    border-radius: 6px;
    transition: all 0.2s ease;
}

.site-header-tech .nav-pc .menu > ul > li > .sub-menu > .sub-menu-list > .sub-menu-item a:hover {
    color: var(--nav-text);
    background: #f1f5f9;
}

.site-header-tech .nav-pc .menu > ul > li > .sub-menu > .sub-menu-visual {
    flex: 0 0 280px;
    width: 280px;
    min-height: 200px;
    background: #f8fafc;
    border-radius: 8px;
    overflow: hidden;
}

.site-header-tech .nav-pc .menu > ul > li > .sub-menu > .sub-menu-visual img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.site-header-tech .nav-pc .menu > ul > li > .sub-menu > .sub-menu-visual:empty {
    display: none;
}

.site-header-tech .nav-actions {
    position: relative;
    z-index: 2;
    flex: 0 0 auto;
    gap: 8px;
}

.site-header-tech .cart,
.site-header-tech .search-icon,
.site-header-tech .nav-language {
    margin-right: 0 !important;
}

.site-header-tech .nav-actions {
    gap: 10px;
}

.site-header-tech .nav-action-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border: 1px solid #e2e8f0;
    background: #ffffff;
    color: var(--nav-text-muted);
    border-radius: 8px;
    transition: all 0.2s ease;
}

.site-header-tech .nav-action-button:hover {
    background: #f8fafc;
    color: var(--nav-text);
    border-color: #cbd5e1;
}

.site-header-tech .cart .nav-action-button,
.site-header-tech .search-icon,
.site-header-tech .nav-lang-toggle {
    border-radius: 12px;
}

.site-header-tech button.nav-action-button {
    cursor: pointer;
}

.site-header-tech .nav-action-button:hover::before {
    display: none;
}

.site-header-tech .nav-action-button:hover::after {
    display: none;
}

.site-header-tech .cart .nav-action-button {
    position: relative;
}

.site-header-tech .cart .cart-count {
    top: -6px;
    right: -6px;
    min-width: 18px;
    height: 18px;
    padding: 0 5px;
    background: var(--nav-accent);
    color: #ffffff;
    font-size: 11px;
    font-weight: 600;
    border-radius: 9px;
}

.site-header-tech .search-icon {
    width: 40px;
    height: 40px;
}

.site-header-tech .search-icon svg {
    width: 18px;
    height: 18px;
}

.site-header-tech .nav-lang-toggle {
    min-width: 70px;
    height: 40px;
    padding: 0 14px;
    font-size: 14px;
    font-weight: 500;
    border-radius: 8px;
}

.site-header-tech .nav-lang-toggle::after {
    margin-left: 6px;
    border-top-color: currentColor;
    opacity: 0.5;
}

.site-header-tech .dropdown-menu {
    margin-top: 8px;
    padding: 6px;
    background: #ffffff;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.08);
}

.site-header-tech .dropdown-item {
    padding: 8px 12px;
    color: var(--nav-text-muted);
    font-size: 14px;
    border-radius: 6px;
    transition: all 0.2s ease;
}

.site-header-tech .dropdown-item:hover,
.site-header-tech .dropdown-item:focus {
    color: var(--nav-text);
    background: #f1f5f9;
}

.site-header-tech .menu-mobile {
    display: none;
}

.site-header-tech .menu-mobile img {
    width: 18px;
    height: 18px;
    filter: none;
}

.site-header-tech .search-wrapper {
    top: calc(100% + 10px);
    height: auto;
    padding: 0 12px;
    background: transparent;
    justify-content: center;
    z-index: 20;
}

.site-header-tech .search-wrapper.show {
    display: flex;
}

.site-header-tech .search-wrapper .search-wrapper-content {
    width: min(700px, 100%);
    gap: 12px;
    padding: 16px;
    background: #ffffff;
    border: 1px solid #e2e8f0;
    border-radius: 12px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.08);
}

.site-header-tech .search-wrapper .search-input {
    flex: 1;
    height: 44px;
    padding: 0 16px;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    background: #f8fafc;
    color: var(--nav-text);
    font-size: 14px;
    transition: all 0.2s ease;
}

.site-header-tech .search-wrapper .search-input:focus {
    outline: none;
    border-color: var(--nav-accent);
    background: #ffffff;
}

.site-header-tech .search-wrapper .search-input::placeholder {
    color: var(--nav-text-muted);
}

.site-header-tech .search-wrapper .search-submit {
    width: 100px;
    height: 44px;
    background: var(--nav-accent);
    color: #ffffff;
    font-size: 14px;
    font-weight: 600;
    border: none;
    border-radius: 8px;
    transition: all 0.2s ease;
}

.site-header-tech .search-wrapper .search-submit:hover {
    background: #1d4ed8;
}

.site-header-tech .search-wrapper .search-close {
    width: 44px;
    height: 44px;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    background: #ffffff;
    transition: all 0.2s ease;
    cursor: pointer;
}

.site-header-tech .search-wrapper .search-close:hover {
    background: #fef2f2;
    border-color: #fecaca;
}

.site-header-tech .search-wrapper .search-close img {
    width: 18px;
    height: 18px;
    filter: none;
}

@media (max-width: 1199.98px) {
    .site-header-tech .nav-shell {
        gap: 18px;
    }

    .site-header-tech .nav-pc .menu > ul > li > a {
        padding: 0 13px;
    }

    .site-header-tech .nav-pc .menu > ul > li > .sub-menu > .sub-menu-list {
        grid-template-columns: repeat(2, minmax(200px, 1fr));
    }

    .site-header-tech .nav-pc .menu > ul > li > .sub-menu > .sub-menu-visual {
        flex-basis: 236px;
        width: 236px;
        min-width: 236px;
    }
}

@media (max-width: 991.98px) {
    .site-header-tech {
        height: 72px;
    }

    .site-header-tech .menu-mobile {
        display: inline-flex !important;
    }

    .site-header-tech .nav-shell {
        gap: 12px;
        padding: 0 12px;
    }

    .site-header-tech .logo {
        max-width: 126px;
    }

    .site-header-tech .logo img {
        max-width: 126px;
        max-height: 32px;
    }

    .site-header-tech .nav-actions {
        gap: 8px;
    }

    .site-header-tech .nav-action-button,
    .site-header-tech .search-icon {
        width: 42px;
        height: 42px;
    }

    .site-header-tech .nav-lang-toggle {
        min-width: 72px;
        padding: 0 14px;
        font-size: 14px;
    }

    .site-header-tech .nav-pc .menu > ul.show-on-mobile {
        top: 80px;
        left: 12px;
        width: calc(100vw - 24px);
        height: auto;
        max-height: calc(100vh - 96px);
        padding: 12px 16px 14px;
        border: 1px solid rgba(255, 255, 255, 0.15);
        border-radius: 14px;
        background: rgba(30, 41, 59, 0.98);
        box-shadow: 0 18px 40px rgba(0, 0, 0, 0.4);
        z-index: 999;
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
    }

    .site-header-tech .nav-pc .menu > ul > li {
        position: relative;
        display: block;
        height: auto;
        line-height: normal;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        background: transparent;
    }

    .site-header-tech .nav-pc .menu > ul > li:last-child {
        border-bottom: none;
    }

    .site-header-tech .nav-pc .menu > ul > li > a {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 12px;
        width: 100%;
        min-height: 54px;
        height: auto;
        padding: 14px 0;
        line-height: 1.45;
        border-radius: 0;
        background: transparent;
        font-size: 16px;
        color: var(--nav-text);
    }

    .site-header-tech .nav-pc .menu > ul > li > a::before {
        display: none;
    }

    .site-header-tech .nav-pc .menu > ul > li:hover > a,
    .site-header-tech .nav-pc .menu > ul > li > a.active {
        color: var(--nav-text);
        background: transparent;
    }

    .site-header-tech .nav-pc .menu-dropdown-icon > a::after {
        margin-left: auto;
        font-size: 12px;
        color: rgba(203, 213, 225, 0.8);
    }

    .site-header-tech .nav-pc .menu > ul > li > .sub-menu {
        top: auto;
        left: auto;
        width: 100%;
        min-width: 0;
        display: block;
        position: relative;
        margin: 0 0 10px;
        padding: 10px 0 2px;
        transform: none;
        border: 0;
        border-top: 1px solid rgba(255, 255, 255, 0.1);
        border-radius: 0;
        background: transparent;
        box-shadow: none;
        backdrop-filter: none;
        -webkit-backdrop-filter: none;
    }

    .site-header-tech .nav-pc .menu > ul > li > .sub-menu::before {
        display: none;
    }

    .site-header-tech .nav-pc .menu > ul > li > .sub-menu::after {
        display: none;
    }

    .site-header-tech .nav-pc .menu > ul > li > .sub-menu > .sub-menu-list > .sub-menu-item + .sub-menu-item {
        margin-top: 0;
    }

    .site-header-tech .nav-pc .menu > ul > li > .sub-menu > .sub-menu-list > .sub-menu-item {
        border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }

    .site-header-tech .nav-pc .menu > ul > li > .sub-menu > .sub-menu-list > .sub-menu-item:last-child {
        border-bottom: 0;
    }

    .site-header-tech .nav-pc .menu > ul > li > .sub-menu > .sub-menu-list > .sub-menu-item a {
        display: flex;
        align-items: center;
        width: 100%;
        min-height: 0;
        padding: 12px 0 12px 18px;
        line-height: 1.5;
        border-radius: 0;
        background: transparent;
        box-shadow: none;
        font-size: 15px;
        color: #cbd5e1;
    }

    .site-header-tech .nav-pc .menu > ul > li > .sub-menu > .sub-menu-list {
        display: block;
        min-height: 0;
        max-width: none;
    }

    .site-header-tech .nav-pc .menu > ul > li > .sub-menu > .sub-menu-visual {
        display: none !important;
    }

    .site-header-tech .nav-pc .menu > ul > li > .sub-menu > .sub-menu-list > .sub-menu-item a::before {
        left: 0;
        font-size: 12px;
    }

    .site-header-tech .search-wrapper {
        top: calc(100% + 8px);
    }

    .site-header-tech .search-wrapper .search-wrapper-content {
        width: 100%;
        flex-wrap: wrap;
    }

    .site-header-tech .search-wrapper .search-input {
        width: 100%;
    }

    .site-header-tech .search-wrapper .search-submit {
        width: calc(100% - 56px);
    }
}

@media (max-width: 575.98px) {
    .site-header-tech {
        height: 60px;
    }

    .site-header-tech .nav-shell {
        gap: 8px;
        padding: 0 8px;
    }

    .site-header-tech .logo {
        max-width: 96px;
    }

    .site-header-tech .logo img {
        max-width: 96px;
        max-height: 26px;
    }

    .site-header-tech .nav-actions {
        gap: 6px;
    }

    .site-header-tech .nav-action-button,
    .site-header-tech .search-icon {
        width: 34px;
        height: 34px;
    }

    .site-header-tech .search-icon svg {
        width: 16px;
        height: 16px;
    }

    .site-header-tech .nav-language {
        display: block;
    }

    .site-header-tech .nav-lang-toggle {
        min-width: 54px;
        height: 34px;
        padding: 0 10px;
        font-size: 11px;
    }

    .site-header-tech .nav-lang-toggle::after {
        margin-left: 6px;
    }

    .site-header-tech .nav-pc .menu > ul.show-on-mobile {
        top: 68px;
        left: 8px;
        width: calc(100vw - 16px);
        max-height: calc(100vh - 80px);
        padding: 8px 12px;
    }
}