* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
}

body {
    background-color: #fff;
    color: #fff;
    overflow-x: hidden;
}

.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 60px;
    z-index: 1000;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 20px;
    background: rgba(255, 255, 255, 0.8);
    transition: background 0.3s ease;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.hamburger {
    width: 24px;
    height: 18px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    cursor: pointer;
    z-index: 1002;
}

.hamburger span {
    display: block;
    width: 100%;
    height: 2px;
    background-color: #333;
    transition: 0.3s;
}

.hamburger.active span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
}

.logo img {
    height: auto;
    width: 150px;
}

.header-icons {
    display: flex;
    gap: 20px;
}

.icon img {
    width: 20px;
    height: 20px;
    filter: invert(1);
    cursor: pointer;
}

.main-nav {
    position: fixed;
    top: 0;
    left: -100%;
    width: 80%;
    height: 100%;
    background: #fff;
    z-index: 1001;
    padding-top: 80px;
    padding-left: 30px;
    padding-right: 30px;
    transition: 0.3s;
}

.main-nav.active {
    left: 0;
}

.main-nav li{
    list-style: none;
    margin-bottom: 20px;
    font-size: 18px;
    color: #333;
    cursor: pointer;
    text-decoration: none;
}

.main-nav li a{
    color: #333;
    text-decoration: none;
}

#pro_1{
    margin-top: 55px;
}

#pro_2-4{
    padding-top:16px;
}

.font-semibold{
    color: #000;
}

#enquire_main{
    color: #000;
}

.text-gray-600 {
    --tw-text-opacity: 1;
    color: rgb(75 85 99 / var(--tw-text-opacity, 1));
}

.alert-container {
    position: relative;
    margin: 20px 0;
}

.alert-success {
    background-color: #d4edda;
    border-color: #28a745;
    color: #155724;
}

.alert {
    padding: 15px;
    margin: 10px 0;
    border-radius: 4px;
    position: relative;
    border-left: 4px solid;
}

#enquire_div{
    margin-top: 60px;
}

@media (min-width: 768px) {
    .bg-gray-100 {
        --tw-bg-opacity: 1;
        background-color: rgb(243 244 246 / var(--tw-bg-opacity, 1));
    }

    #enquire_div{
        margin-top: 60px;
    }

    #pro_2-4{
        padding-top:70px;
    }

    #pro_1{
        margin-top: 30px;
    }

    .hamburger {
        display: none;
    }

    .main-nav {
        position: static;
        width: auto;
        height: auto;
        background: transparent;
        padding: 0;
        display: flex;
        align-items: center;
        gap: 32px;
        left: auto;
    }

    .main-nav li {
        margin-bottom: 0;
        font-size: 14px;
        color: #333;
        font-weight: 500;
        opacity: 0.9;
        transition: opacity 0.3s;
    }

    .main-nav li:hover {
        opacity: 1;
    }

    .header {
        background: rgba(255, 255, 255, 0.6);
        justify-content: flex-start;
    }

    .scrolled{
        background: rgba(255, 255, 255, 1);
        transition: background 0.3s ease;
    }

    .logo {
        margin-right: 40px;
    }

    .header-icons {
        margin-left: auto;
    }
}

.overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 50;
    display: none;
}

.cart-count {
    position: absolute;
    top: -5px;
    right: -5px;
    background-color: #e74c3c;
    color: white;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 10px;
    box-shadow: 0 4px 8px rgba(231, 76, 60, 0.3);
    transition: all 0.3s;
}

.cart-count.bump {
    transform: scale(1.3);
}

.overlay.active {
    display: block;
}

.carousel {
    position: relative;
    width: 100%;
    height: 60vh;
    overflow: hidden;
}

.carousel-inner {
    width: 100%;
    height: 100%;
    position: relative;
}

.slide {
    position: absolute;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    opacity: 0;
    transition: opacity 0.8s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding-top: 15vh;
}

.slide.active {
    opacity: 1;
    z-index: 1;
}

.content {
    z-index: 2;
    padding: 0 20px;
}

.subtitle-top {
    font-size: 14px;
    margin-bottom: 5px;
    opacity: 0.9;
}

.title {
    font-size: 32px;
    font-weight: 600;
    margin-bottom: 5px;
    line-height: 1.2;
}

.subtitle-bottom {
    font-size: 16px;
    font-weight: 300;
    margin-bottom: 25px;
}

.buttons {
    display: flex;
    gap: 15px;
    justify-content: center;
}

.btn {
    padding: 8px 24px;
    border: 1px solid rgba(255, 255, 255, 0.8);
    border-radius: 20px;
    background: rgba(0, 0, 0, 0.1);
    color: #fff;
    text-decoration: none;
    font-size: 14px;
    display: flex;
    align-items: center;
    transition: 0.3s;
}

.btn:hover {
    background: rgba(255, 255, 255, 0.1);
}

.btn i {
    font-style: normal;
    margin-left: 5px;
    font-size: 12px;
}

.pagination {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 8px;
    z-index: 10;
}

.dot {
    width: 30px;
    height: 5px;
    background: rgba(255, 255, 255, 0.3);
    cursor: pointer;
}

.dot.active {
    background: #fff;
}

.promo-section {
    position: relative;
    width: 100%;
    min-height: 800px;
    background-image: url('../images/section2g.png');
    background-size: cover;
    background-position: center top;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding-top: 30px;
    text-align: center;
    color: #fff;
}

.promo-tag {
    font-size: 16px;
    font-weight: 300;
    margin-bottom: 10px;
    opacity: 0.9;
}

.promo-price {
    font-size: 36px;
    font-weight: 600;
    margin-bottom: 15px;
}

.promo-desc {
    font-size: 16px;
    line-height: 1.5;
    max-width: 90%;
    margin-bottom: 30px;
}

.promo-btn {
    padding: 10px 40px;
    border: 1px solid #fff;
    border-radius: 25px;
    background: transparent;
    color: #fff;
    font-size: 16px;
    text-decoration: none;
    transition: 0.3s;
}

.promo-btn:hover {
    background: rgba(255, 255, 255, 0.1);
}

.carousel-inner > div:nth-child(1) {
    background-image: url('../images/1.png')
}

.carousel-inner > div:nth-child(2) {
    background-image: url('../images/2g.png')
}

.carousel-inner > div:nth-child(3) {
    background-image: url('../images/3g.png')
}

.carousel-inner > div:nth-child(4) {
    background-image: url('../images/4g.png')
}

.product-grid > .product-card:nth-child(1){
    background-position-x: -380px;
}

.product-grid > .product-card:nth-child(2){
    background-position-x: -380px;
}

.product-grid > .product-card:nth-child(3){
    background-position-x: -380px;
}

.product-grid > .product-card:nth-child(4){
    background-position-x: -435px;
}

.product-grid > .product-card:nth-child(5){
    background-position-x: -430px;
}

.product-grid > .product-card:nth-child(6){
    background-position-x: -430px;
}

.product-grid > .product-card:nth-child(7){
    background-position-x: -420px;
}

.product-grid > .product-card:nth-child(8){
    background-position-x: -420px;
}

/* 视频轮播容器 */
.video-carousel-container {
    position: relative;
    width: 100%;
    max-width: 900px;
    margin: 0 auto;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.5);
    background: #0f172a;
    border: 1px solid #334155;
}

.video-carousel {
    position: relative;
    width: 100%;
    height: 500px;
    overflow: hidden;
}

.video-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 0.8s ease-in-out;
    display: flex;
    align-items: center;
    justify-content: center;
}

.video-slide.active {
    opacity: 1;
}

.video-container {
    width: 100%;
    height: 100%;
    position: relative;
}

.video-container video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.video-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    background: linear-gradient(to top, rgba(15, 23, 42, 0.95), transparent);
    padding: 30px 25px 20px;
    color: white;
    z-index: 2;
}

.video-title {
    font-size: 1.6rem;
    margin-bottom: 8px;
    font-weight: 600;
    color: #f8fafc;
}

.video-description {
    font-size: 0.95rem;
    color: #cbd5e1;
    line-height: 1.5;
}

/* 控制按钮 */
.carousel-controls {
    position: absolute;
    top: 50%;
    width: 100%;
    display: flex;
    justify-content: space-between;
    padding: 0 20px;
    transform: translateY(-50%);
    z-index: 10;
}

.control-btn {
    background: rgba(15, 23, 42, 0.8);
    border: 1px solid #475569;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    backdrop-filter: blur(5px);
}

.control-btn:hover {
    background: rgba(79, 172, 254, 0.8);
    transform: scale(1.1);
    border-color: #4facfe;
}

/* 指示器 */
.carousel-indicators {
    position: absolute;
    bottom: 15px;
    left: 0;
    width: 100%;
    display: flex;
    justify-content: center;
    gap: 12px;
    z-index: 10;
}

.indicator {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.indicator.active {
    background: rgba(79, 172, 254, 0.3);
}

.indicator.active::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: #4facfe;
    animation: indicatorProgress 5s linear forwards;
}

.indicator:hover {
    background: #4facfe;
    transform: scale(1.2);
}

@keyframes indicatorProgress {
    from { transform: translateX(-100%); }
    to { transform: translateX(0); }
}

/* 视频控制 */
.video-controls {
    position: absolute;
    bottom: 70px;
    left: 0;
    width: 100%;
    display: flex;
    align-items: center;
    padding: 0 25px;
    z-index: 10;
}

.video-progress {
    flex-grow: 1;
    height: 6px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
    margin: 0 15px;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.video-progress-filled {
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    background: #4facfe;
    border-radius: 3px;
    width: 0%;
    transition: width 0.1s linear;
}

.play-pause-btn {
    background: rgba(15, 23, 42, 0.8);
    border: 1px solid #475569;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    color: white;
    font-size: 1.2rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s;
}

.play-pause-btn:hover {
    background: rgba(79, 172, 254, 0.8);
    transform: scale(1.1);
    border-color: #4facfe;
}

/* 状态显示 */
.status-indicator {
    position: absolute;
    top: 20px;
    right: 20px;
    background: rgba(15, 23, 42, 0.8);
    border: 1px solid #475569;
    border-radius: 20px;
    padding: 8px 15px;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 8px;
    z-index: 10;
    backdrop-filter: blur(5px);
}

.status-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: #10b981;
}

.status-dot.loading {
    background: #f59e0b;
    animation: pulse 1.5s infinite;
}

.status-dot.paused {
    background: #ef4444;
}

.video-controls{
    display: none;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

#ab1{
    display: none;
}

#ab_ab{
    padding-top:68px;
}

#contact{
    padding-top:68px;
}

/* 下拉菜单样式 */
.dropdown {
    position: relative;
    margin-bottom: 25px;
}

.dropdown-btn {
    margin-top: 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    background: rgba(15, 23, 42, 0.7);
    border: 1px solid rgba(124, 58, 237, 0.3);
    border-radius: 12px;
    padding: 6px 12px;
    color: #e2e8f0;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: left;
}

.dropdown-btn:hover {
    background: rgba(30, 41, 59, 0.9);
    border-color: rgba(124, 58, 237, 0.5);
}

.dropdown-btn i {
    transition: transform 0.4s ease;
}

.dropdown-btn.active i {
    transform: rotate(180deg);
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(15, 23, 42, 0.95);
    border: 1px solid rgba(99, 102, 241, 0.3);
    border-radius: 12px;
    margin-top: 8px;
    overflow: hidden;
    z-index: 100;
    max-height: 0;
    opacity: 0;
    transform: translateY(-10px);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
}

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

.dropdown-item {
    display: flex;
    align-items: center;
    padding: 14px 20px;
    color: #cbd5e1;
    text-decoration: none;
    transition: all 0.3s ease;
    border-bottom: 1px solid rgba(99, 102, 241, 0.1);
}

.dropdown-item:last-child {
    border-bottom: none;
}

.dropdown-item:hover {
    background: rgba(79, 70, 229, 0.1);
    color: #e2e8f0;
    padding-left: 25px;
}

.dropdown-item i {
    width: 30px;
    font-size: 1.1rem;
    color: #8b5cf6;
}


#ab_ab{
    height: 45vh;
}

@media (min-width: 768px) {
    #ab_ab{
        height: 34vh;
    }

    #mobile-menu a{
        color: #4a5568;
        text-decoration: none;
        font-weight: 500;
        padding: 0.5rem 0;
        transition: all 0.3s ease;
    }

    #mobile-menu a::after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 0;
        width: 0;
        height: 2px;
        background: #4f46e5;
        transition: width 0.3s cubic-bezier(0.165, 0.84, 0.44, 1);
    }

    #contact{
        padding-top:68px;
    }

    #ab_ab{
        margin-top:0px;
    }

    #ab1{
        display: block;
    }
    .product-grid > .product-card{
        background-position-x: 0px !important;
    }

    .title {
        font-size: 48px;
    }

    .slide {
        padding-top: 15vh;
    }

    .promo-section {
        min-height: 900px;
        background-image: url('../images/section2-PCg.png');
        background-position: center center;
    }

    .promo-price {
        font-size: 48px;
    }

    .carousel-inner > div:nth-child(1) {
        background-image: url('../images/banner1.png')
    }

    .carousel-inner > div:nth-child(2) {
        background-image: url('../images/banner2g.png')
    }

    .carousel-inner > div:nth-child(3) {
        background-image: url('../images/banner3g.png')
    }

    .carousel-inner > div:nth-child(4) {
        background-image: url('../images/banner4g.png')
    }
}

.product-grid {
    display: grid;
    grid-template-columns: 1fr;
    width: 100%;
    background-color: #fff;
    margin-top: 0;
}

.product-card {
    position: relative;
    height: 600px;
    background-size: cover;
    background-position: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding-top: 30px;
    text-align: center;
    color: #333;
}

.product-subtitle {
    font-size: 14px;
    color: #555;
    margin-bottom: 8px;
    font-weight: 300;
}

.product-logo {
    height: 28px;
    width: auto;
    margin-bottom: 8px;
    display: block;
}

.product-desc {
    font-size: 18px;
    color: #333;
    margin-bottom: 24px;
    font-weight: 400;
}

.product-buttons {
    display: flex;
    align-items: center;
    gap: 20px;
}

.btn-dark {
    color: #333;
    border: 1px solid #333;
    padding: 8px 24px;
    border-radius: 20px;
    text-decoration: none;
    font-size: 14px;
    transition: 0.3s;
    background: transparent;
    align-items: center;
}

.btn-dark:hover {
    background: rgba(0, 0, 0, 0.05);
}

.btn-dark i {
    font-style: normal;
    margin-left: 5px;
    font-size: 12px;
}

@media (min-width: 768px) {
    .product-grid {
        grid-template-columns: 1fr 1fr;
    }

    .product-card {
        height: 700px;
    }

    .product-subtitle {
        font-size: 16px;
    }

    .product-logo {
        height: 36px;
    }

    .product-desc {
        font-size: 20px;
    }
}

.feature-carousel {
    position: relative;
    width: 100%;
    height: 70vh;
    overflow: hidden;
    margin-top: 5px;
}

.feature-carousel .carousel-inner {
    width: 100%;
    height: 100%;
}

.feature-carousel .slide {
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    align-items: center;
    padding-top: 10vh;
    text-align: center;
    background-size: cover;
    background-position: center;
}

.feature-title {
    font-size: 40px;
    font-weight: 700;
    margin-bottom: 5px;
}

.feature-subtitle {
    font-size: 18px;
    margin-bottom: 30px;
    opacity: 0.9;
}

.feature-carousel .pagination {
    bottom: 30px;
}

.innovation-story {
    padding: 60px 20px;
    background-color: #f5f5f5;
    text-align: center;
    color: #333;
}

.innovation-header {
    margin-bottom: 40px;
}

.section-title {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 15px;
}

.section-desc {
    font-size: 16px;
    color: #666;
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.5;
}

.story-container {
    width: 100%;
}

.story-card {
    height: 500px;
    background-size: cover;
    background-position: center;
    position: relative;
    border-radius: 4px;
    overflow: hidden;
    color: #333;
}

.story-content {
    padding-top: 60px;
    display: flex;
    flex-direction: column;
    align-items: center;
    background: linear-gradient(to bottom, rgba(255, 255, 255, 0.7) 0%, rgba(255, 255, 255, 0) 100%);
    height: 100%;
}

.story-subtitle {
    font-size: 14px;
    color: #444;
    margin-bottom: 10px;
    font-weight: 300;
}

.story-title {
    font-size: 28px;
    font-weight: 600;
    margin-bottom: 20px;
    line-height: 1.3;
}

.story-link {
    font-size: 14px;
    color: #333;
    text-decoration: none;
    margin-top: 10px;
    transition: opacity 0.3s;
}

.story-link:hover {
    opacity: 0.7;
}

@media (max-width: 767px) {
    .story-container {
        display: flex;
        overflow-x: auto;
        scroll-snap-type: x mandatory;
        -webkit-overflow-scrolling: touch;
        gap: 10px;
        padding-bottom: 20px;
        scrollbar-width: none;
    }

    .story-container::-webkit-scrollbar {
        display: none;
    }

    .story-card {
        min-width: 100%;
        scroll-snap-align: center;
    }

    .story-pagination {
        display: flex;
        justify-content: center;
        margin-top: 10px;
        gap: 8px;
    }

    .story-dot {
        width: 15px;
        height: 2px;
        background-color: #ccc;
        border-radius: 2px;
        transition: background-color 0.3s;
    }

    .story-dot.active {
        background-color: #333;
    }
}

@media (min-width: 768px) {
    .innovation-story {
        background-color: #fff;
    }

    .story-container {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 20px;
        max-width: 1200px;
        margin: 0 auto;
    }

    .story-card {
        height: 600px;
    }

    .story-pagination {
        display: none;
    }
}

.product-fields {
    padding: 60px 20px;
    background-color: #fff;
    text-align: center;
    color: #fff;
}

.fields-title {
    font-size: 32px;
    font-weight: 500;
    margin-bottom: 40px;
    color: #000;
}

.fields-container {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.field-card {
    height: 480px;
    background-size: cover;
    background-position: center;
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 20px;
}

.field-content {
    z-index: 2;
}

.field-name {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 10px;
}

.field-desc {
    font-size: 16px;
    margin-bottom: 20px;
    font-weight: 300;
}

.field-link {
    font-size: 16px;
    color: #fff;
    text-decoration: none;
    transition: opacity 0.3s;
}

.field-link:hover {
    opacity: 0.8;
}

.field-card-1 {
    background-image: url('../images/section6.webp');
}

.field-card-2 {
    background-image: url('../images/section6-2.webp');
}

.field-card-3 {
    background-image: url('../images/section6-3.webp');
}

@media (min-width: 768px) {
    .fields-container {
        flex-direction: row;
        gap: 20px;
        max-width: 1200px;
        margin: 0 auto;
    }

    .field-card {
        flex: 1;
        height: 600px;
        justify-content: flex-start;
        padding-top: 80px;
    }

    .field-card-1 {
        background-image: url('../images/section6-PC.webp');
    }

    .field-card-2 {
        background-image: url('../images/瑟ction--pc.webp');
    }

    .field-card-3 {
        background-image: url('../images/section6-3-pc.webp');
    }
}

.support-section {
    padding: 20px 0;
    background-color: #f7f8f9;
}

.support-container {
    display: flex;
    flex-direction: column;
    width: 100%;
}

.support-item {
    display: flex;
    align-items: center;
    padding: 15px 20px;
    background-color: #f7f8f9;
    text-decoration: none;
    color: #333;
    transition: background-color 0.2s;
}

.support-item:hover {
    background-color: #eaeaea;
}

.support-icon img {
    width: 24px;
    height: 24px;
    margin-right: 15px;
    display: block;
}

.support-text {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.support-title {
    font-size: 16px;
    color: #333;
    font-weight: 400;
}

.mobile-arrow {
    font-family: monospace;
    font-weight: bold;
    color: #666;
    margin-left: 10px;
}

.support-link {
    display: none;
}

@media (min-width: 768px) {
    .support-section {
        padding: 60px 0;
        background-color: #fff;
    }

    .support-container {
        flex-direction: row;
        justify-content: center;
        gap: 100px;
        max-width: 1200px;
        margin: 0 auto;
    }

    .support-item {
        flex-direction: column;
        align-items: center;
        text-align: center;
        padding: 20px;
        background-color: transparent;
    }

    .support-item:hover {
        background-color: transparent;
    }

    .support-icon img {
        width: 48px;
        height: 48px;
        margin-right: 0;
        margin-bottom: 20px;
    }

    .support-title {
        font-size: 20px;
        font-weight: 500;
        margin-bottom: 10px;
    }

    .mobile-arrow {
        display: none;
    }

    .support-link {
        display: block;
        font-size: 14px;
        color: #666;
        margin-top: 5px;
    }
}

.footer {
    background-color: #1a1a1a;
    color: #fff;
    padding-top: 20px;
    padding-bottom: 40px;
    font-size: 14px;
}

.footer-top-bar {
    text-align: right;
    padding: 10px 20px;
}

.back-to-top {
    color: #999;
    text-decoration: none;
    font-size: 12px;
}

.app-banner {
    padding: 40px 20px;
    text-align: center;
    border-bottom: 1px solid #333;
}

.app-title {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 10px;
}

.app-desc {
    font-size: 14px;
    color: #ccc;
    margin-bottom: 20px;
    line-height: 1.5;
}

.app-btn {
    display: inline-block;
    padding: 10px 40px;
    background-color: #333;
    color: #fff;
    border-radius: 4px;
    text-decoration: none;
    transition: background 0.3s;
}

.app-btn:hover {
    background-color: #444;
}

.footer-links-container {
    padding: 20px;
}

.footer-column {
    border-bottom: 1px solid #333;
    padding: 15px 0;
}

.footer-heading {
    font-size: 14px;
    font-weight: 500;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    color: #fff;
}

.mobile-toggle {
    font-size: 18px;
    color: #999;
    transition: transform 0.3s;
}

.footer-column.active .mobile-toggle {
    transform: rotate(45deg);
}

.footer-list {
    list-style: none;
    margin-top: 15px;
    display: none;
}

.footer-column.active .footer-list {
    display: block;
}

.footer-list li {
    margin-bottom: 10px;
}

.footer-list a {
    color: #999;
    text-decoration: none;
    transition: color 0.3s;
}

.footer-list a:hover {
    color: #fff;
}

.subscribe-column {
    border-bottom: none;
    margin-top: 20px;
}

.subscribe-desc {
    color: #999;
    margin: 10px 0;
}

.subscribe-form {
    display: flex;
    margin-bottom: 20px;
}

.subscribe-form input {
    flex: 1;
    padding: 10px;
    background: #333;
    border: none;
    color: #fff;
    border-radius: 4px 0 0 4px;
}

.subscribe-form button {
    padding: 10px 15px;
    background: #555;
    border: none;
    color: #fff;
    border-radius: 0 4px 4px 0;
    cursor: pointer;
}

.social-icons {
    display: flex;
    gap: 15px;
    align-items: center;
}

.social-icons a {
    display: block;
    opacity: 0.7;
    transition: opacity 0.3s;
}

.social-icons a:hover {
    opacity: 1;
}

.social-icons img {
    height: 20px;
    width: auto;
    display: block;
}

.footer-bottom {
    padding: 20px;
    color: #666;
    font-size: 12px;
    border-top: 1px solid #333;
}

.footer-bottom-links {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    margin-bottom: 20px;
}

.footer-bottom-links a {
    color: #666;
    text-decoration: none;
}

.copyright {
    line-height: 1.6;
}

@media (min-width: 1024px) {
    .footer-links-container {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 40px;
        max-width: 1200px;
        margin: 0 auto;
        padding: 40px 20px;
    }

    .footer-column {
        border-bottom: none;
        padding: 0;
    }

    .footer-heading {
        margin-bottom: 20px;
        cursor: default;
    }

    .mobile-toggle {
        display: none;
    }

    .footer-list {
        display: block !important;
    }

    .subscribe-column {
        grid-column: span 1;
        margin-top: 0;
    }

    .footer-bottom {
        max-width: 1200px;
        margin: 0 auto;
        border-top: 1px solid #333;
        display: flex;
        justify-content: space-between;
        align-items: flex-start;
    }

    .footer-bottom-links {
        margin-bottom: 0;
    }
}

/* 搜索遮罩层样式 */
.search-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 60px;
    background-color: #fff;
    z-index: 2000;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 0 20px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.search-container {
    width: 100%;
    max-width: 1200px;
    display: flex;
    align-items: center;
    height: 100%;
    position: relative;
}

.search-icon-overlay {
    margin-right: 15px;
    display: flex;
    align-items: center;
}

.search-icon-overlay img {
    width: 20px;
    height: 20px;
    filter: invert(100%) sepia(0%) saturate(7482%) hue-rotate(72deg) brightness(99%) contrast(104%);
    opacity: 0.5;
}

.search-input {
    flex-grow: 1;
    border: none;
    outline: none;
    font-size: 16px;
    color: #333;
    background: transparent;
    height: 100%;
}

.search-input::placeholder {
    color: #999;
}

.close-icon-overlay {
    font-size: 28px;
    color: #333;
    cursor: pointer;
    margin-left: 15px;
    line-height: 1;
    font-weight: 300;
}

/* 适配 PC Header */
@media (min-width: 768px) {
    .search-overlay {
        height: 80px;
    }
}

/* 购物车下拉框样式 */
.cart-wrapper {
    position: relative;
    height: 100%;
    display: flex;
    align-items: center;
}

.cart-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    width: 320px;
    background: #fff;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    border-radius: 4px;
    padding: 24px;
    display: none;
    z-index: 1500;
    color: #333;
    cursor: default;
    border: 1px solid #eee;
}


.cart-item {
    display: flex;
    align-items: center;
    padding-bottom: 20px;
    border-bottom: 1px solid #f0f0f0;
    margin-bottom: 20px;
}

.cart-item-img {
    width: 48px;
    height: 48px;
    object-fit: contain;
    margin-right: 15px;
    border: 1px solid #f0f0f0;
    border-radius: 4px;
}

.cart-item-info {
    flex: 1;
}

.cart-item-title {
    font-size: 14px;
    color: #333;
    margin-bottom: 4px;
    font-weight: 500;
}

.cart-item-price {
    font-size: 14px;
    color: #aeaeae;
}

.cart-summary {
    display: flex;
    flex-direction: column;
}

.cart-total-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    font-size: 14px;
    color: #333;
}

.cart-total-price {
    font-size: 18px;
    font-weight: 700;
    color: #333;
}

.cart-checkout-btn {
    display: block;
    width: 100%;
    height: 40px;
    line-height: 40px;
    text-align: center;
    background-color: #0070d5;
    color: #fff;
    text-decoration: none;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 500;
    transition: background-color 0.2s;
}

.cart-checkout-btn:hover {
    background-color: #005bb5;
}

.back-to-top {
    position: fixed;
    bottom: 90px;
    right: 30px;
    width: 50px;
    height: 50px;
    background-color: #007bff;
    color: white;
    text-align: center;
    line-height: 50px;
    font-size: 24px;
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 2px 10px rgba(0,0,0,0.3);
    transition: all 0.3s ease;
    float: right; /* 使用float属性 */
    z-index: 1000;
}

.back-to-top:hover {
    background-color: #0056b3;
    transform: translateY(-3px);
}

/* PC端 Hover 触发 */
@media (min-width: 768px) {
    .cart-wrapper:hover .cart-dropdown {
        display: block;
    }
}

/* 移动端底部固定栏样式 */
.mobile-bottom-bar {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    background: #fff;
    padding: 10px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.1);
    z-index: 1000;
}

.bar-price-info {
    display: flex;
    flex-direction: column;
}

.bar-current-price {
    font-size: 20px;
    font-weight: 700;
    color: #333;
}

.bar-installment-info {
    font-size: 12px;
    color: #666;
    margin-top: 2px;
}

.bar-buy-btn {
    background-color: #0070d5;
    color: #fff;
    border: none;
    padding: 10px 30px;
    border-radius: 20px;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.3s;
}

.bar-buy-btn:hover {
    background-color: #005bb5;
}

/* PC端隐藏底部固定栏 */
@media (min-width: 768px) {
    .mobile-bottom-bar {
        display: none;
    }
}