* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

:root {
    --primary-color: #1a73e8;
    --secondary-color: #0d5cb6;
    --accent-color: #ff6d00;
    --light-color: #f0f7ff;
    --dark-color: #202124;
    --gray-color: #5f6368;
    --light-gray: #e8eaed;
    --border-radius: 8px;
    --box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
    --transition: all 0.3s ease;
}

body {
    color: var(--dark-color);
    line-height: 1.6;
    background-color: #f9f9f9;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 头部样式 */
header {
    background-color: white;
    box-shadow: var(--box-shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-icon {
    width: 180px;
    height: 60px;
    background: transparent;
    border-radius: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 24px;
    overflow: hidden;
    position: relative;
}

.logo-icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    background: transparent;
    padding: 0;
    border-radius: 0;
}

.logo-text {
    display: flex;
    flex-direction: column;
}

.logo-text h1 {
    font-size: 22px;
    color: var(--dark-color);
    line-height: 1.2;
}

.logo-text span {
    font-size: 14px;
    color: var(--gray-color);
    font-weight: 500;
}

nav ul {
    display: flex;
    list-style: none;
    gap: 30px;
}

nav a {
    text-decoration: none;
    color: var(--dark-color);
    font-weight: 600;
    font-size: 16px;
    transition: var(--transition);
    position: relative;
}

nav a:hover {
    color: var(--primary-color);
}

nav a.active {
    color: var(--primary-color);
}

nav a.active::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 100%;
    height: 3px;
    background-color: var(--primary-color);
    border-radius: 2px;
}

/* 语言切换按钮 */
.header-actions {
    display: flex;
    align-items: center;
    gap: 15px;
}

.cart-icon {
    position: relative;
    cursor: pointer;
    padding: 10px;
    color: var(--dark-color);
    font-size: 20px;
    transition: var(--transition);
}

.cart-icon:hover {
    color: var(--primary-color);
}

.cart-count {
    position: absolute;
    top: 0;
    right: 0;
    background: var(--accent-color);
    color: white;
    border-radius: 50%;
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: 600;
}

.user-auth {
    display: flex;
    align-items: center;
    gap: 10px;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 15px;
}

.user-name {
    font-weight: 600;
    color: var(--dark-color);
}

.btn-sm {
    padding: 8px 16px;
    font-size: 14px;
}

.modal-close-btn {
    position: absolute;
    top: 15px;
    right: 15px;
    background: none;
    border: none;
    font-size: 24px;
    color: var(--gray-color);
    cursor: pointer;
    padding: 5px;
    transition: var(--transition);
}

.modal-close-btn:hover {
    color: var(--dark-color);
}

.orders-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.order-card {
    background: white;
    padding: 20px;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}

.order-status {
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
}

.report-section {
    margin-bottom: 40px;
}

.report-section h4 {
    margin-bottom: 20px;
    color: var(--dark-color);
}

.language-switcher {
    display: flex;
    align-items: center;
}

.btn-lang {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background-color: var(--light-color);
    border: 1px solid var(--light-gray);
    border-radius: var(--border-radius);
    cursor: pointer;
    font-weight: 600;
    color: var(--dark-color);
    transition: var(--transition);
    font-size: 15px;
}

.btn-lang:hover {
    background-color: rgba(26, 115, 232, 0.1);
    color: var(--primary-color);
    border-color: var(--primary-color);
}

.btn-lang i {
    font-size: 16px;
}

/* 英雄区域 */
.hero {
    background: linear-gradient(rgba(0, 0, 0, 0.75), rgba(0, 0, 0, 0.7)), url('https://images.unsplash.com/photo-1558494949-ef010cbdcc31?ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D&auto=format&fit=crop&w=2070&q=80');
    background-size: cover;
    background-position: center;
    color: white;
    padding: 120px 0;
    text-align: center;
    position: relative;
}

.hero-content {
    max-width: 850px;
    margin: 0 auto;
    position: relative;
    z-index: 2;
}

.hero h2 {
    font-size: 46px;
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero p {
    font-size: 18px;
    max-width: 700px;
    margin: 0 auto 30px;
    opacity: 0.9;
    line-height: 1.7;
}

.btn {
    display: inline-block;
    background-color: var(--primary-color);
    color: white;
    padding: 14px 30px;
    border-radius: var(--border-radius);
    text-decoration: none;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    font-size: 16px;
}

.btn:hover {
    background-color: var(--secondary-color);
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.btn-accent {
    background-color: var(--accent-color);
}

.btn-accent:hover {
    background-color: #e55c00;
}

.btn-outline {
    background-color: transparent;
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
}

.btn-outline:hover {
    background-color: var(--primary-color);
    color: white;
}

/* 产品展示区 */
.section-title {
    text-align: center;
    margin-bottom: 50px;
}

.section-title h2 {
    font-size: 36px;
    color: var(--dark-color);
    margin-bottom: 15px;
    position: relative;
    display: inline-block;
}

.section-title h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background-color: var(--primary-color);
    border-radius: 2px;
}

.section-title p {
    color: var(--gray-color);
    max-width: 700px;
    margin: 0 auto;
}

.products-section {
    padding: 80px 0;
    background-color: white;
}

/* 产品分类标签页（类似软件下载） */
.product-tabs {
    display: flex;
    justify-content: center;
    margin-bottom: 40px;
    flex-wrap: wrap;
    gap: 10px;
    position: relative;
}

.product-tabs .tab-btn {
    padding: 12px 25px;
    background-color: white;
    border: 1px solid var(--light-gray);
    border-radius: var(--border-radius);
    cursor: pointer;
    font-weight: 600;
    transition: var(--transition);
    font-size: 15px;
    position: relative;
}

.product-tabs .tab-btn.active {
    background-color: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.product-tabs .tab-btn:hover:not(.active) {
    border-color: var(--primary-color);
    color: var(--primary-color);
    background-color: var(--light-color);
}

/* 分类下拉菜单 */
.category-dropdown {
    position: relative;
}

.category-dropdown-menu {
    display: none !important;
    position: absolute;
    top: 100%;
    left: 0;
    margin-top: 5px;
    background: white;
    border: 1px solid var(--light-gray);
    border-radius: var(--border-radius);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
    min-width: 280px;
    max-width: 400px;
    max-height: 500px;
    overflow-y: auto;
    z-index: 1000;
    padding: 10px 0;
    opacity: 0;
    pointer-events: auto;
    visibility: hidden;
}

.category-dropdown-menu.show {
    display: block !important;
    visibility: visible;
}

.dropdown-content {
    display: flex;
    flex-direction: column;
}

.dropdown-section {
    padding: 5px 0;
}

.dropdown-main-link,
.dropdown-sub-link,
.dropdown-product-link {
    display: flex;
    align-items: center;
    padding: 10px 20px;
    color: var(--dark-color);
    text-decoration: none;
    transition: var(--transition);
    font-size: 14px;
    gap: 10px;
}

.dropdown-main-link {
    font-weight: 600;
    color: var(--primary-color);
    background-color: var(--light-color);
}

.dropdown-sub-link {
    padding-left: 35px;
    font-weight: 500;
}

.dropdown-product-link {
    padding-left: 35px;
    font-size: 13px;
    color: var(--gray-color);
}

.dropdown-main-link:hover,
.dropdown-sub-link:hover,
.dropdown-product-link:hover {
    background-color: var(--light-color);
    color: var(--primary-color);
}

.dropdown-main-link i,
.dropdown-sub-link i,
.dropdown-product-link i {
    width: 16px;
    text-align: center;
    color: var(--primary-color);
}

.dropdown-subtitle {
    padding: 8px 20px;
    font-size: 12px;
    font-weight: 600;
    color: var(--gray-color);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.dropdown-divider {
    height: 1px;
    background: var(--light-gray);
    margin: 5px 0;
}

.dropdown-count {
    margin-left: auto;
    font-size: 12px;
    color: var(--gray-color);
    font-weight: normal;
}

.dropdown-more {
    padding: 8px 35px;
    font-size: 12px;
    color: var(--gray-color);
    font-style: italic;
}

/* 产品搜索和统计布局 */
.products-header-actions {
    display: flex;
    flex-direction: column;
    gap: 30px;
    margin-bottom: 40px;
}

/* 产品搜索 */
.product-search {
    max-width: 600px;
    margin: 0 auto;
    position: relative;
}

.product-search input {
    width: 100%;
    padding: 14px 50px 14px 20px;
    border: 1px solid var(--light-gray);
    border-radius: var(--border-radius);
    font-size: 16px;
    transition: var(--transition);
}

.product-search input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(26, 115, 232, 0.1);
}

.product-search i {
    position: absolute;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--gray-color);
    font-size: 18px;
}

/* 产品网格布局（优化为类似软件卡片） */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 30px;
}

.product-card {
    background-color: white;
    border-radius: var(--border-radius);
    padding: 30px;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    border: 1px solid var(--light-gray);
    position: relative;
    height: 100%;
    overflow: hidden;
    word-wrap: break-word;
    word-break: break-word;
    overflow-wrap: break-word;
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
    border-color: var(--primary-color);
}

.product-img {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color), #4fc3f7);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 40px;
    margin-bottom: 20px;
    flex-shrink: 0;
    position: relative;
    overflow: hidden;
}

.product-img img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    background: white;
    border-radius: var(--border-radius);
}

.product-img i {
    display: flex;
    align-items: center;
    justify-content: center;
}

.product-img.clickable-image {
    cursor: pointer;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.product-img.clickable-image:hover {
    transform: scale(1.05);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.product-img.clickable-image:active {
    transform: scale(0.98);
}

.product-badge {
    position: absolute;
    top: 15px;
    right: 15px;
    background-color: var(--accent-color);
    color: white;
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    z-index: 10;
    word-wrap: break-word;
    word-break: break-word;
    overflow-wrap: break-word;
    max-width: 80px;
    text-align: center;
}

.product-content {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.product-category-tag {
    display: inline-block;
    background-color: var(--light-color);
    color: var(--primary-color);
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 15px;
    align-self: flex-start;
    word-wrap: break-word;
    word-break: break-word;
    overflow-wrap: break-word;
    max-width: 100%;
}

.product-title {
    font-size: 20px;
    margin-bottom: 15px;
    color: var(--dark-color);
    font-weight: 600;
    line-height: 1.3;
    word-wrap: break-word;
    word-break: break-word;
    overflow-wrap: break-word;
    hyphens: auto;
}

.product-desc {
    color: var(--gray-color);
    margin-bottom: 20px;
    font-size: 15px;
    line-height: 1.7;
    flex-grow: 1;
    word-wrap: break-word;
    word-break: break-word;
    overflow-wrap: break-word;
    hyphens: auto;
}

.product-features {
    margin-bottom: 20px;
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.product-features li {
    font-size: 13px;
    display: flex;
    align-items: center;
    gap: 6px;
    background-color: var(--light-color);
    padding: 6px 12px;
    border-radius: 20px;
    color: var(--primary-color);
    font-weight: 500;
    word-wrap: break-word;
    word-break: break-word;
    overflow-wrap: break-word;
    max-width: 100%;
}

.product-features i {
    color: var(--accent-color);
    font-size: 11px;
    flex-shrink: 0;
}

.product-footer {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin-top: auto;
    padding-top: 20px;
    border-top: 1px solid var(--light-gray);
}

.product-price {
    font-weight: 700;
    color: var(--primary-color);
    font-size: 24px;
    text-align: center;
    margin-bottom: 5px;
    word-wrap: break-word;
    word-break: break-word;
    overflow-wrap: break-word;
}

.product-actions-buttons {
    display: flex;
    gap: 10px;
    width: 100%;
}

.product-actions-buttons .btn {
    flex: 1;
    text-align: center;
    padding: 12px 20px;
    font-size: 15px;
    word-wrap: break-word;
    word-break: break-word;
    overflow-wrap: break-word;
    white-space: normal;
}

.btn-consult {
    background-color: var(--primary-color);
    color: white;
}

.btn-consult:hover {
    background-color: var(--secondary-color);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(26, 115, 232, 0.3);
}

/* 分类分组显示样式 */
.category-section-header {
    grid-column: 1 / -1;
    margin: 40px 0 20px;
    padding-bottom: 15px;
    border-bottom: 3px solid var(--primary-color);
}

.category-section-header:first-child {
    margin-top: 0;
}

.category-section-title {
    font-size: 28px;
    color: var(--dark-color);
    display: flex;
    align-items: center;
    gap: 12px;
}

.category-section-title i {
    color: var(--primary-color);
    font-size: 24px;
}

.category-count {
    font-size: 18px;
    color: var(--gray-color);
    font-weight: normal;
    margin-left: 8px;
}

.subcategory-section-header {
    grid-column: 1 / -1;
    margin: 30px 0 15px;
    padding-left: 20px;
    border-left: 4px solid var(--accent-color);
}

.subcategory-section-title {
    font-size: 20px;
    color: var(--dark-color);
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
}

.subcategory-section-title i {
    color: var(--accent-color);
    font-size: 16px;
}

/* 产品详情模态框 */
.product-details-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.product-details-modal.active {
    opacity: 1;
    visibility: visible;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(5px);
}

.modal-content {
    position: relative;
    background-color: white;
    border-radius: var(--border-radius);
    max-width: 1100px;
    width: 95%;
    max-height: 95vh;
    overflow-y: auto;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    transform: scale(0.9);
    transition: transform 0.3s ease;
    z-index: 10001;
}

.product-details-modal.active .modal-content {
    transform: scale(1);
}

.modal-close {
    position: absolute;
    top: 20px;
    right: 20px;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--light-gray);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    color: var(--dark-color);
    transition: var(--transition);
    z-index: 10002;
}

.modal-close:hover {
    background-color: var(--primary-color);
    color: white;
    transform: rotate(90deg);
}

/* ==================== 产品导入样式 ==================== */
#import-products .form-group {
    margin-bottom: 20px;
}

#import-products .form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--dark-color);
}

#import-products .form-control {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid var(--light-gray);
    border-radius: var(--border-radius);
    font-size: 14px;
    font-family: 'Courier New', monospace;
    transition: var(--transition);
}

#import-products .form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(26, 115, 232, 0.1);
}

#import-products textarea.form-control {
    min-height: 200px;
    resize: vertical;
    font-size: 12px;
    line-height: 1.5;
}

#import-results {
    margin-top: 30px;
    padding: 20px;
    border-radius: var(--border-radius);
}

#import-results.success {
    background-color: #d4edda;
    border: 1px solid #c3e6cb;
    color: #155724;
}

#import-results.error {
    background-color: #f8d7da;
    border: 1px solid #f5c6cb;
    color: #721c24;
}

#import-results h4 {
    margin-bottom: 15px;
    display: flex;
    align-items: center;
}

#import-results h4 i {
    margin-right: 10px;
}

#import-results p {
    white-space: pre-line;
    line-height: 1.8;
}

/* 数据格式说明区域 */
.data-format-info {
    background: var(--light-gray);
    padding: 25px;
    border-radius: var(--border-radius);
    margin-top: 40px;
}

.data-format-info h4 {
    margin-bottom: 15px;
    color: var(--dark-color);
}

.data-format-info ul {
    list-style: inside;
    margin-bottom: 15px;
    padding-left: 0;
}

.data-format-info li {
    color: var(--gray-color);
    margin-bottom: 8px;
}

.data-format-info strong {
    color: var(--dark-color);
}

/* 产品详情模态框样式

/* 产品详情模态框样式 */
.product-detail-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    padding: 40px;
}

.product-images-section {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.main-product-image {
    position: relative;
    width: 100%;
    height: 400px;
    background: var(--light-gray);
    border-radius: var(--border-radius);
    overflow: hidden;
}

.main-product-image img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.product-thumbnails {
    display: flex;
    gap: 10px;
    overflow-x: auto;
    padding: 5px;
}

.product-thumbnails img {
    width: 80px;
    height: 80px;
    object-fit: cover;
    border-radius: 8px;
    cursor: pointer;
    border: 2px solid transparent;
    transition: var(--transition);
}

.product-thumbnails img:hover,
.product-thumbnails img.active {
    border-color: var(--primary-color);
}

/* 图片轮播提示 */
.main-product-image::after {
    content: '🖱️ 鼠标悬停暂停轮播';
    position: absolute;
    bottom: 15px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(0, 0, 0, 0.75);
    color: white;
    padding: 10px 20px;
    border-radius: 25px;
    font-size: 13px;
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
    z-index: 10;
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
}

.main-product-image:hover::after {
    opacity: 1;
}

/* 图片过渡动画 */
.main-product-image img {
    transition: opacity 0.3s ease;
}

.main-product-image img.fade-in {
    animation: fadeIn 0.5s ease-in-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.product-info-section h2 {
    font-size: 28px;
    margin-bottom: 10px;
    color: var(--dark-color);
}

.product-model {
    font-size: 16px;
    color: var(--gray-color);
    margin-bottom: 15px;
}

.product-price {
    font-size: 32px;
    font-weight: bold;
    color: var(--accent-color);
    margin-bottom: 25px;
}

.product-description {
    color: var(--gray-color);
    line-height: 1.8;
    margin-bottom: 25px;
}

.product-features,
.product-specs {
    margin-bottom: 25px;
}

.product-features h3,
.product-specs h3 {
    font-size: 18px;
    margin-bottom: 15px;
    color: var(--dark-color);
}

.product-features ul,
.product-specs ul {
    list-style: none;
    padding-left: 0;
}

.product-features ul li,
.product-specs ul li {
    padding: 8px 0;
    padding-left: 25px;
    position: relative;
    color: var(--gray-color);
}

.product-features ul li:before,
.product-specs ul li:before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

.product-actions {
    display: flex;
    gap: 15px;
    margin-top: 30px;
}

/* 产品图片展示区域 */
.product-details-image-section {
    width: 100%;
    background: linear-gradient(135deg, #f5f9ff, #e8f4ff);
    padding: 40px;
    border-bottom: 3px solid var(--light-gray);
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

/* 图片轮播容器 */
.product-image-carousel {
    position: relative;
    width: 100%;
    max-width: 700px;
    height: 450px;
    background: white;
    border-radius: var(--border-radius);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    overflow: hidden;
}

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

.carousel-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 0.5s ease-in-out;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 30px;
}

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

.carousel-slide img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    transition: transform 0.3s ease;
}

.carousel-slide:hover img {
    transform: scale(1.05);
}

/* 轮播按钮 */
.carousel-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 50px;
    height: 50px;
    background: rgba(255, 255, 255, 0.9);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    color: var(--dark-color);
    z-index: 10;
    transition: all 0.3s ease;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
}

.carousel-btn:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-50%) scale(1.1);
}

.carousel-prev {
    left: 20px;
}

.carousel-next {
    right: 20px;
}

/* 轮播指示器 */
.carousel-indicators {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    z-index: 10;
}

.carousel-indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    transition: all 0.3s ease;
    border: 2px solid rgba(255, 255, 255, 0.8);
}

.carousel-indicator:hover {
    background: rgba(255, 255, 255, 0.8);
    transform: scale(1.2);
}

.carousel-indicator.active {
    background: var(--primary-color);
    border-color: var(--primary-color);
    width: 30px;
    border-radius: 6px;
}

.product-details-icon-fallback {
    width: 200px;
    height: 200px;
    background: linear-gradient(135deg, var(--primary-color), #4fc3f7);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 100px;
    margin: 0 auto;
}

.product-details-badge {
    position: absolute;
    top: 20px;
    right: 20px;
    background-color: var(--accent-color);
    color: white;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 600;
    z-index: 10;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
}

.product-details-header {
    padding: 40px;
    border-bottom: 2px solid var(--light-gray);
    background: white;
}

.product-details-title {
    text-align: center;
}

.product-details-title h2 {
    font-size: 32px;
    margin: 15px 0;
    color: var(--dark-color);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 10px;
    word-wrap: break-word;
    word-break: break-word;
    overflow-wrap: break-word;
}

.product-model {
    font-size: 24px;
    color: var(--gray-color);
    font-weight: 400;
}

.product-details-meta {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 30px;
    margin-top: 20px;
    flex-wrap: wrap;
}

.product-details-date {
    font-size: 14px;
    color: var(--gray-color);
    display: flex;
    align-items: center;
    gap: 8px;
}

.product-details-date i {
    color: var(--primary-color);
}

.product-details-title h2 {
    font-size: 28px;
    margin: 10px 0;
    color: var(--dark-color);
}

.product-details-price {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary-color);
    margin-top: 10px;
}

.product-details-body {
    padding: 40px;
}

.details-section {
    margin-bottom: 30px;
}

.details-section:last-child {
    margin-bottom: 0;
}

.details-section h3 {
    font-size: 22px;
    color: var(--dark-color);
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--light-color);
    display: flex;
    align-items: center;
    gap: 10px;
}

.details-section h3 i {
    color: var(--primary-color);
    font-size: 20px;
}

.details-section p {
    color: var(--gray-color);
    line-height: 1.8;
    font-size: 16px;
    word-wrap: break-word;
    word-break: break-word;
    overflow-wrap: break-word;
    hyphens: auto;
}

.details-list {
    list-style: none;
    padding: 0;
}

.details-list li {
    padding: 10px 0;
    padding-left: 30px;
    position: relative;
    color: var(--gray-color);
    line-height: 1.6;
    word-wrap: break-word;
    word-break: break-word;
    overflow-wrap: break-word;
    hyphens: auto;
}

.details-list li i {
    position: absolute;
    left: 0;
    color: var(--accent-color);
    top: 12px;
}

.specs-list li {
    padding-left: 20px;
}

.specs-list li::before {
    content: '•';
    color: var(--primary-color);
    font-weight: bold;
    position: absolute;
    left: 0;
}

.product-details-footer {
    padding: 30px 40px;
    border-top: 2px solid var(--light-gray);
    display: flex;
    gap: 15px;
    justify-content: flex-end;
    background-color: var(--light-color);
}

.product-details-footer .btn {
    min-width: 150px;
}

/* 产品信息网格 */
.product-info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-top: 15px;
}

.info-item {
    display: flex;
    flex-direction: column;
    padding: 15px;
    background: var(--light-color);
    border-radius: var(--border-radius);
    border-left: 4px solid var(--primary-color);
}

.info-label {
    font-size: 13px;
    color: var(--gray-color);
    margin-bottom: 5px;
    font-weight: 500;
}

.info-value {
    font-size: 16px;
    color: var(--dark-color);
    font-weight: 600;
    word-wrap: break-word;
    word-break: break-word;
    overflow-wrap: break-word;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .product-details-image-section {
        padding: 20px;
    }
    
    .product-image-carousel {
        height: 300px;
    }
    
    .carousel-slide {
        padding: 15px;
    }
    
    .carousel-btn {
        width: 40px;
        height: 40px;
        font-size: 16px;
    }
    
    .carousel-prev {
        left: 10px;
    }
    
    .carousel-next {
        right: 10px;
    }
    
    .carousel-indicators {
        bottom: 10px;
    }
    
    .product-details-title h2 {
        font-size: 24px;
    }
    
    .product-model {
        font-size: 18px;
    }
    
    .product-details-meta {
        flex-direction: column;
        gap: 15px;
    }
    
    .product-info-grid {
        grid-template-columns: 1fr;
    }
}

/* 软件下载区 */
.software-section {
    padding: 80px 0;
    background-color: var(--light-color);
}

.software-tabs {
    display: flex;
    justify-content: center;
    margin-bottom: 40px;
    flex-wrap: wrap;
    gap: 10px;
}

.tab-btn {
    padding: 12px 25px;
    background-color: white;
    border: 1px solid var(--light-gray);
    border-radius: var(--border-radius);
    cursor: pointer;
    font-weight: 600;
    transition: var(--transition);
}

.tab-btn.active {
    background-color: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.tab-btn:hover:not(.active) {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.software-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 30px;
}

.software-card {
    background-color: white;
    border-radius: var(--border-radius);
    padding: 30px;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.software-card:hover {
    transform: translateY(-5px);
}

.software-icon {
    font-size: 40px;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.software-title {
    font-size: 20px;
    margin-bottom: 10px;
}

.software-desc {
    color: var(--gray-color);
    margin-bottom: 20px;
    font-size: 15px;
    flex-grow: 1;
}

.software-meta {
    display: flex;
    justify-content: space-between;
    margin-bottom: 10px;
    font-size: 14px;
    color: var(--gray-color);
}

/* 管理后台界面 */
/* 登录模态框样式 */
.login-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 10000;
}

.login-modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

.login-modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(5px);
}

.login-modal-content {
    position: relative;
    background: white;
    border-radius: var(--border-radius);
    padding: 40px;
    max-width: 450px;
    width: 90%;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
    z-index: 10001;
    animation: slideDown 0.3s ease;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.login-header {
    text-align: center;
    margin-bottom: 30px;
}

.login-header h2 {
    font-size: 28px;
    color: var(--dark-color);
    margin-bottom: 10px;
}

.login-header p {
    color: var(--gray-color);
    font-size: 14px;
}

.login-modal-content .form-group {
    margin-bottom: 20px;
}

.login-modal-content .form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--dark-color);
}

.login-modal-content .form-control {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid var(--light-gray);
    border-radius: var(--border-radius);
    font-size: 16px;
    transition: var(--transition);
}

.login-modal-content .form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(26, 115, 232, 0.1);
}

.error-message {
    background-color: #fee;
    color: #c33;
    padding: 12px;
    border-radius: var(--border-radius);
    margin-bottom: 15px;
    border: 1px solid #fcc;
    font-size: 14px;
}

.admin-section {
    padding: 80px 0;
    background-color: white;
}

.admin-container {
    display: grid;
    grid-template-columns: 250px 1fr;
    gap: 30px;
    background-color: white;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow);
}

.admin-sidebar {
    background-color: var(--light-color);
    padding: 30px 0;
}

.admin-sidebar ul {
    list-style: none;
}

.admin-sidebar li {
    padding: 15px 25px;
    border-left: 4px solid transparent;
    transition: var(--transition);
    cursor: pointer;
    font-weight: 600;
    color: var(--dark-color);
    display: flex;
    align-items: center;
}

.admin-sidebar li.active {
    background-color: rgba(26, 115, 232, 0.1);
    border-left-color: var(--primary-color);
    color: var(--primary-color);
}

.admin-sidebar li:hover:not(.active) {
    background-color: rgba(26, 115, 232, 0.05);
}

.admin-sidebar i {
    margin-right: 10px;
    width: 20px;
}

.admin-content {
    padding: 30px;
}

.admin-tab {
    display: none;
}

.admin-tab.active {
    display: block;
}

.admin-content h3 {
    font-size: 24px;
    margin-bottom: 30px;
    color: var(--dark-color);
    padding-bottom: 15px;
    border-bottom: 2px solid var(--light-gray);
}

.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--dark-color);
}

.form-control {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid var(--light-gray);
    border-radius: var(--border-radius);
    font-size: 16px;
    transition: var(--transition);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(26, 115, 232, 0.1);
}

textarea.form-control {
    min-height: 150px;
    resize: vertical;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.form-actions {
    display: flex;
    gap: 15px;
    margin-top: 30px;
}

.btn-secondary {
    background-color: #6c757d;
}

.btn-secondary:hover {
    background-color: #5a6268;
}

.products-list {
    margin-top: 30px;
}

.admin-products-list {
    margin-top: 30px;
}

.product-item {
    display: grid;
    grid-template-columns: 80px 1fr auto;
    align-items: center;
    gap: 20px;
    padding: 20px;
    border-bottom: 1px solid var(--light-gray);
}

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

.product-item-img {
    width: 80px;
    height: 80px;
    background-color: var(--light-gray);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    font-size: 30px;
    overflow: hidden;
    flex-shrink: 0;
}

.product-item-img img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    background: white;
    border-radius: var(--border-radius);
}

.product-item-img i {
    display: flex;
    align-items: center;
    justify-content: center;
}

.product-item-info h4 {
    font-size: 18px;
    margin-bottom: 5px;
}

.product-item-info p {
    color: var(--gray-color);
    font-size: 14px;
}

.product-actions {
    display: flex;
    gap: 10px;
}

.action-btn {
    padding: 8px 12px;
    border-radius: var(--border-radius);
    border: none;
    cursor: pointer;
    font-size: 14px;
    transition: var(--transition);
}

.edit-btn {
    background-color: #17a2b8;
    color: white;
}

.delete-btn {
    background-color: #dc3545;
    color: white;
}

/* 统计卡片 */
.stats-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 15px;
}

.stat-card {
    background-color: var(--light-color);
    border-radius: var(--border-radius);
    padding: 25px;
    text-align: center;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    border: 2px solid transparent;
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
    border-color: var(--primary-color);
}

.stat-card.clickable {
    cursor: pointer;
}

.stat-card.clickable:hover {
    background-color: rgba(26, 115, 232, 0.05);
}

.stat-card i {
    font-size: 40px;
    color: var(--primary-color);
    margin-bottom: 15px;
    transition: var(--transition);
}

.stat-card:hover i {
    transform: scale(1.1);
}

.stat-card h4 {
    font-size: 32px;
    margin-bottom: 5px;
    color: var(--dark-color);
    transition: var(--transition);
}

.stat-card:hover h4 {
    color: var(--primary-color);
}

.stat-card p {
    color: var(--gray-color);
    font-size: 15px;
}

/* 页脚 */
footer {
    background-color: #1a1a1a;
    color: #aaa;
    padding: 60px 0 30px;
}

.footer-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
}

.footer-logo-icon {
    width: 200px;
    height: 80px;
    background: white;
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 20px;
    overflow: hidden;
    position: relative;
    padding: 10px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.footer-logo-icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    background: white;
    padding: 5px;
    border-radius: var(--border-radius);
    filter: none; /* 移除白色滤镜，显示LOGO原始颜色 */
}

.footer-logo-text {
    display: flex;
    flex-direction: column;
}

.footer-logo-text h4 {
    font-size: 20px;
    color: white;
    line-height: 1.2;
}

.footer-logo-text span {
    font-size: 13px;
    color: #aaa;
    font-weight: 500;
}

.footer-about p {
    margin-bottom: 20px;
    line-height: 1.8;
}

.footer-links h4, .footer-contact h4 {
    color: white;
    font-size: 18px;
    margin-bottom: 25px;
    position: relative;
}

.footer-links h4::after, .footer-contact h4::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 40px;
    height: 3px;
    background-color: var(--primary-color);
}

.footer-links ul {
    list-style: none;
}

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    color: #aaa;
    text-decoration: none;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--primary-color);
    padding-left: 5px;
}

.footer-contact p {
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.footer-contact i {
    color: var(--primary-color);
    width: 20px;
}

.social-links {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 15px;
}

.wechat-btn {
    position: relative;
}

.wechat-popup {
    display: none;
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    margin-bottom: 10px;
    background: white;
    padding: 15px;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    z-index: 1000;
    animation: fadeIn 0.3s ease;
}

.wechat-popup::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    border: 8px solid transparent;
    border-top-color: white;
}

.wechat-popup img {
    width: 150px;
    height: 150px;
    display: block;
    border-radius: 4px;
}

.wechat-popup p {
    margin: 10px 0 0 0;
    text-align: center;
    font-size: 12px;
    color: #666;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateX(-50%) translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
}

.copyright {
    text-align: center;
    padding-top: 30px;
    margin-top: 40px;
    border-top: 1px solid #333;
    color: #777;
    font-size: 14px;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .admin-container {
        grid-template-columns: 1fr;
    }
    
    .admin-sidebar {
        padding: 20px;
    }
    
    .admin-sidebar ul {
        display: flex;
        overflow-x: auto;
        gap: 15px;
    }
    
    .admin-sidebar li {
        border-left: none;
        border-bottom: 3px solid transparent;
        padding: 10px 15px;
        white-space: nowrap;
    }
    
    .admin-sidebar li.active {
        border-left: none;
        border-bottom-color: var(--primary-color);
    }
}

@media (max-width: 768px) {
    .header-container {
        flex-direction: column;
        gap: 20px;
    }
    
    nav ul {
        gap: 15px;
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .hero h2 {
        font-size: 32px;
    }
    
    .hero p {
        font-size: 16px;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .product-item {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 15px;
    }
    
    .product-actions {
        justify-content: center;
    }
    
    .product-footer {
        flex-direction: column;
        gap: 15px;
    }
    
    .product-actions-buttons {
        flex-direction: column;
    }
    
    .product-actions-buttons .btn {
        width: 100%;
    }
    
    .language-switcher {
        margin-top: 10px;
    }
    
    /* 移动端产品标签页优化 */
    .product-tabs {
        flex-direction: column;
        align-items: center;
    }
    
    .product-tabs .tab-btn {
        width: 100%;
        max-width: 300px;
        text-align: center;
    }
    
    .products-header-actions {
        gap: 20px;
    }
    
    .stats-container {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .section-title h2 {
        font-size: 28px;
    }
    
    .btn {
        padding: 12px 25px;
        font-size: 15px;
    }
    
    .software-tabs, .product-tabs {
        flex-direction: column;
        align-items: center;
    }
    
    .tab-btn {
        width: 100%;
        max-width: 300px;
        text-align: center;
    }
    
    .product-details-image-section {
        padding: 20px;
    }
    
    .product-details-main-image {
        height: 250px;
        padding: 15px;
    }
    
    .product-details-header {
        padding: 25px 20px;
    }
    
    .product-details-title h2 {
        font-size: 22px;
    }
    
    .product-model {
        font-size: 16px;
    }
    
    .product-details-meta {
        flex-direction: column;
        gap: 10px;
    }
    
    .product-details-body {
        padding: 25px 20px;
    }
    
    .product-details-footer {
        flex-direction: column;
        padding: 20px;
    }
    
    .product-details-footer .btn {
        width: 100%;
    }
    
    .product-info-grid {
        grid-template-columns: 1fr;
    }
    
    .category-section-title {
        font-size: 22px;
    }
    
    .subcategory-section-title {
        font-size: 18px;
    }
}
/* 产品图片轮播样式 */
.product-image-slider {
    position: relative;
    width: 100%;
    max-width: 600px;
    margin: 0 auto;
    overflow: hidden;
}

.slider-container {
    position: relative;
    width: 100%;
    height: 400px;
}

.slider-img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: none;
}

.slider-img:first-child {
    display: block;
}

.slider-prev, .slider-next {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(0, 0, 0, 0.5);
    color: white;
    border: none;
    padding: 10px 15px;
    cursor: pointer;
    font-size: 18px;
    z-index: 10;
    transition: background 0.3s;
}

.slider-prev:hover, .slider-next:hover {
    background: rgba(0, 0, 0, 0.8);
}

.slider-prev {
    left: 10px;
}

.slider-next {
    right: 10px;
}

.slider-dots {
    position: absolute;
    bottom: 15px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 8px;
    z-index: 10;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    transition: background 0.3s;
}

.dot.active {
    background: white;
}

.dot:hover {
    background: rgba(255, 255, 255, 0.8);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .slider-container {
        height: 300px;
    }

    .slider-prev, .slider-next {
        padding: 8px 12px;
        font-size: 16px;
    }
}

/* News Section */
.news-section {
    padding: 80px 0;
    background-color: var(--light-color);
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 30px;
}

.news-card {
    background-color: white;
    border-radius: var(--border-radius);
    padding: 0;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.news-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

.news-image {
    width: 100%;
    height: 200px;
    background: linear-gradient(135deg, var(--primary-color), #4fc3f7);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 60px;
    flex-shrink: 0;
}

.news-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.news-content {
    padding: 25px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.news-date {
    font-size: 14px;
    color: var(--primary-color);
    margin-bottom: 10px;
    font-weight: 600;
}

.news-title {
    font-size: 20px;
    margin-bottom: 15px;
    color: var(--dark-color);
    font-weight: 600;
    line-height: 1.4;
}

.news-summary {
    color: var(--gray-color);
    font-size: 15px;
    line-height: 1.7;
    margin-bottom: 20px;
    flex-grow: 1;
}

.news-read-more {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 5px;
}

.news-read-more:hover {
    color: var(--secondary-color);
    gap: 8px;
}

/* About Us Section */
.about-section {
    padding: 80px 0;
    background-color: white;
}

.about-content {
    display: flex;
    flex-direction: column;
    gap: 60px;
}

.about-intro,
.about-mission,
.about-vision {
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.about-intro h3,
.about-mission h3,
.about-vision h3 {
    font-size: 28px;
    color: var(--dark-color);
    margin-bottom: 20px;
}

.about-intro p,
.about-mission p,
.about-vision p {
    color: var(--gray-color);
    font-size: 16px;
    line-height: 1.8;
}

.about-values {
    max-width: 1200px;
    margin: 0 auto;
}

.about-values h3 {
    font-size: 28px;
    color: var(--dark-color);
    text-align: center;
    margin-bottom: 40px;
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.value-item {
    background-color: var(--light-color);
    border-radius: var(--border-radius);
    padding: 40px 30px;
    text-align: center;
    transition: var(--transition);
    border: 2px solid transparent;
}

.value-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
    border-color: var(--primary-color);
}

.value-item i {
    font-size: 48px;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.value-item h4 {
    font-size: 22px;
    color: var(--dark-color);
    margin-bottom: 15px;
}

.value-item p {
    color: var(--gray-color);
    font-size: 15px;
    line-height: 1.7;
}

/* Hidden Homepage Logo Trigger Area */
.company-logo-secret {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 30px;
    cursor: default;
    user-select: none;
}

.company-logo-secret .logo {
    font-size: 36px;
    font-weight: bold;
    color: var(--dark-color);
    background: linear-gradient(135deg, #1a73e8 0%, #0d5cb6 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    transition: var(--transition);
    cursor: pointer;
}

.company-logo-secret .logo:hover {
    opacity: 0.8;
}

/* Responsive Design - News and About Us */
@media (max-width: 768px) {
    .news-grid {
        grid-template-columns: 1fr;
    }

    .values-grid {
        grid-template-columns: 1fr;
    }

    .about-intro h3,
    .about-mission h3,
    .about-vision h3 {
        font-size: 24px;
        margin-bottom: 15px;
        color: var(--dark-color);
        text-align: center;
        padding: 20px;
        background: var(--light-color);
        border-radius: var(--border-radius);
    }

/* 新闻管理样式 */
.news-admin-list {
    margin-top: 20px;
}

.news-admin-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    border-bottom: 1px solid var(--light-gray);
    background: white;
    margin-bottom: 10px;
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.news-admin-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.news-admin-item h4 {
    margin: 0 0 10px 0;
    color: var(--dark-color);
    font-size: 18px;
    font-weight: 600;
}

.news-admin-item p {
    margin: 5px 0;
    font-size: 14px;
    color: var(--gray-color);
}

.news-admin-actions {
    display: flex;
    gap: 10px;
}
        font-size: 24px;
    }
}

/* ==================== Contact Section Two-Column Layout ==================== */
.contact-section {
    padding: 80px 0;
    background: var(--light-bg);
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: start;
}

/* Left: Company Information */
.contact-left {
    width: 100%;
}

.company-info-box {
    background: white;
    padding: 30px;
    border-radius: var(--border-radius);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
}

.company-info-box h3 {
    margin: 0 0 25px 0;
    color: var(--primary-color);
    font-size: 24px;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 10px;
}

.company-info-box h3 i {
    font-size: 22px;
}

.company-info-content {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.company-name {
    font-size: 20px;
    font-weight: 600;
    color: var(--dark-color);
    margin-bottom: 5px;
}

.company-name-en {
    font-size: 16px;
    color: var(--gray-color);
    font-weight: 400;
}

.info-item {
    display: flex;
    gap: 15px;
    padding: 15px;
    background: var(--light-bg);
    border-radius: var(--border-radius);
    border-left: 4px solid var(--primary-color);
}

.info-item i {
    font-size: 24px;
    color: var(--primary-color);
    flex-shrink: 0;
    margin-top: 5px;
}

.info-item > div {
    flex: 1;
}

.info-item strong {
    display: block;
    margin-bottom: 5px;
    color: var(--dark-color);
    font-size: 16px;
}

.info-item p {
    margin: 5px 0 0 0;
    color: var(--text-color);
    font-size: 15px;
    line-height: 1.5;
}

.info-item .en-text {
    font-size: 13px;
    color: var(--gray-color);
}

.wechat-info {
    display: block;
}

.wechat-qrcode-container {
    margin-top: 15px;
    text-align: center;
}

.wechat-qrcode-container img {
    width: 150px;
    height: 150px;
    object-fit: contain;
    border-radius: var(--border-radius);
    border: 2px solid var(--light-gray);
    transition: var(--transition);
}

.wechat-qrcode-container img:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

/* Right: Customer Contact Form */
.contact-right {
    width: 100%;
}

.contact-form-box {
    background: white;
    padding: 35px;
    border-radius: var(--border-radius);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
}

.contact-form-box h3 {
    margin: 0 0 30px 0;
    color: var(--primary-color);
    font-size: 24px;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 10px;
}

.contact-form-box h3 i {
    font-size: 22px;
}

.contact-form .form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.contact-form .form-group {
    margin-bottom: 20px;
}

.contact-form label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--dark-color);
    font-size: 15px;
}

.contact-form input[type="text"],
.contact-form input[type="tel"],
.contact-form input[type="email"],
.contact-form select,
.contact-form textarea {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid var(--light-gray);
    border-radius: var(--border-radius);
    font-size: 15px;
    transition: var(--transition);
    font-family: var(--font-family);
}

.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(74, 144, 226, 0.1);
}

.contact-form select {
    cursor: pointer;
    background: white;
}

.contact-form textarea {
    resize: vertical;
    min-height: 120px;
}

.contact-form .required {
    color: #dc3545;
    margin-left: 3px;
}

.contact-form .btn-primary {
    width: 100%;
    padding: 14px;
    font-size: 16px;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    transition: var(--transition);
}

.contact-form .btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(74, 144, 226, 0.3);
}

/* Responsive Design */
@media (max-width: 992px) {
    .contact-wrapper {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .contact-left,
    .contact-right {
        width: 100%;
    }
}

@media (max-width: 768px) {
    .contact-section {
        padding: 50px 0;
    }

    .contact-wrapper {
        gap: 25px;
    }

    .company-info-box,
    .contact-form-box {
        padding: 25px;
    }

    .contact-form .form-row {
        grid-template-columns: 1fr;
        gap: 15px;
    }

    .info-item {
        flex-direction: column;
        gap: 10px;
        padding: 12px;
    }

    .info-item i {
        font-size: 20px;
        margin-top: 0;
    }

    .company-name {
        font-size: 18px;
    }

    .company-name-en {
        font-size: 14px;
    }

    .wechat-qrcode-container img {
        width: 120px;
        height: 120px;
    }
}

@media (max-width: 480px) {
    .contact-section {
        padding: 40px 0;
    }

    .company-info-box,
    .contact-form-box {
        padding: 20px;
    }

    .company-info-box h3,
    .contact-form-box h3 {
        font-size: 20px;
    }
}

/* ==================== AI Chatbot Styles ==================== */
#chatBot {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 1000;
}

#chatToggle {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 15px 20px;
    border-radius: 50px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 10px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    transition: var(--transition);
    font-weight: 600;
}

#chatToggle:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
}

#chatToggle i {
    font-size: 20px;
}

#chatWindow {
    display: none;
    flex-direction: column;
    background: white;
    border-radius: 16px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
    width: 380px;
    height: 600px;
    overflow: hidden;
    animation: chatSlideUp 0.3s ease-out;
}

@keyframes chatSlideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.chat-header {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.chat-title {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 18px;
    font-weight: 600;
}

.chat-title i {
    font-size: 20px;
}

.chat-close {
    background: none;
    border: none;
    color: white;
    font-size: 24px;
    cursor: pointer;
    padding: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: var(--transition);
}

.chat-close:hover {
    background: rgba(255, 255, 255, 0.2);
}

.chat-header-buttons {
    display: flex;
    align-items: center;
    gap: 10px;
}

.chat-clear {
    background: rgba(255, 255, 255, 0.15);
    border: none;
    color: white;
    padding: 6px 12px;
    border-radius: 4px;
    font-size: 14px;
    cursor: pointer;
    transition: var(--transition);
}

.chat-clear:hover {
    background: rgba(255, 255, 255, 0.25);
}

.chat-messages {
    flex: 1;
    padding: 20px;
    overflow-y: auto;
    background: #f8f9fa;
}

.chat-message {
    display: flex;
    gap: 12px;
    margin-bottom: 16px;
    animation: messageAppear 0.3s ease-out;
}

@keyframes messageAppear {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.user-message {
    flex-direction: row-reverse;
}

.user-message .message-content {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
}

.bot-message .message-content {
    background: white;
    color: var(--dark-color);
    border: 1px solid #e9ecef;
}

.message-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    flex-shrink: 0;
}

.user-avatar {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
}

.bot-avatar {
    background: #6c757d;
    color: white;
}

.message-content {
    max-width: 70%;
    padding: 12px 16px;
    border-radius: 18px;
    line-height: 1.5;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.message-content p {
    margin: 0 0 8px 0;
}

.message-content p:last-child {
    margin-bottom: 0;
}

.chat-input-area {
    display: flex;
    padding: 20px;
    background: white;
    border-top: 1px solid #e9ecef;
    gap: 10px;
}

#chatInput {
    flex: 1;
    padding: 12px 16px;
    border: 2px solid #e9ecef;
    border-radius: 24px;
    font-size: 14px;
    transition: var(--transition);
}

#chatInput:focus {
    outline: none;
    border-color: var(--primary-color);
}

#chatSendBtn {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border: none;
    border-radius: 50%;
    width: 48px;
    height: 48px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    transition: var(--transition);
    flex-shrink: 0;
}

#chatSendBtn:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 12px rgba(26, 115, 232, 0.3);
}

.chat-message.loading .message-content {
    background: none;
    border: none;
    box-shadow: none;
    padding: 0;
}

.chat-message.loading .fa-spinner {
    color: var(--primary-color);
}

/* Responsive chat */
@media (max-width: 480px) {
    #chatWindow {
        width: calc(100vw - 40px);
        height: 70vh;
        bottom: 80px;
        right: 20px;
    }
    
    #chatToggle {
        padding: 12px 16px;
        font-size: 14px;
    }
}