/* 基础样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Noto Sans SC', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f8f9fa;
}

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

/* 导航栏样式 */
.navbar {
    background-color: #222864;
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    min-height: 60px;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logo-img {
    height: 24px;
    width: auto;
    object-fit: contain;
    vertical-align: middle;
    display: block;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
    flex: 1;
    justify-content: flex-end;
}

.nav-menu a {
    color: white;
    text-decoration: none;
    font-weight: 400;
    font-size: 0.9rem;
    transition: color 0.3s ease;
}

.nav-menu a:hover {
    color: #a8b3d9;
}

/* 语言切换下拉菜单样式 */
.language-dropdown {
    position: relative;
}

.language-toggle {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    user-select: none;
    padding: 8px 16px;
    border-radius: 6px;
    transition: all 0.3s ease;
    border: none;
    background: none;
    min-width: 120px;
    white-space: nowrap;
}

.language-toggle:hover {
    background: rgba(255, 255, 255, 0.1);
}

.language-icon {
    font-size: 18px;
    filter: drop-shadow(0 1px 2px rgba(0, 0, 0, 0.3));
}

.language-text {
    font-size: 0.9rem;
    font-weight: 500;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
    min-width: 80px;
    text-align: left;
}

.dropdown-arrow {
    font-size: 12px;
    transition: transform 0.3s ease;
    filter: drop-shadow(0 1px 2px rgba(0, 0, 0, 0.3));
}

.language-dropdown.active .dropdown-arrow {
    transform: rotate(180deg);
}

.language-menu {
    position: absolute;
    top: 100%;
    right: 0;
    min-width: 200px;
    background-color: #ffffff;
    border-radius: 16px;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3), 0 4px 16px rgba(0, 0, 0, 0.2);
    border: 1px solid rgba(0, 0, 0, 0.08);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
    z-index: 1000;
    list-style: none;
    padding: 16px 0;
    margin: 8px 0 0 0;
    backdrop-filter: blur(20px);
    white-space: nowrap;
}

.language-dropdown.active .language-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.language-menu li {
    margin: 0;
}

.language-menu a {
    display: block;
    padding: 14px 20px;
    color: #1a1a1a !important;
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 600;
    transition: all 0.3s ease;
    border-radius: 10px;
    margin: 3px 12px;
    position: relative;
    overflow: hidden;
    background: rgba(248, 249, 250, 0.9);
    border: 1px solid rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(5px);
    white-space: nowrap;
}

.language-menu a::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    width: 0;
    height: 100%;
    background: linear-gradient(90deg, #222864, #3b4a8c);
    transition: width 0.3s ease;
    z-index: -1;
}

.language-menu a:hover {
    background: rgba(34, 40, 100, 0.08);
    color: #1a1a1a !important;
    transform: translateX(6px);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
    border-color: rgba(34, 40, 100, 0.2);
}

.language-menu a:hover::before {
    width: 5px;
}

.language-menu a.active {
    background: linear-gradient(135deg, #222864, #3b4a8c);
    color: white !important;
    font-weight: 600;
    box-shadow: 0 4px 16px rgba(34, 40, 100, 0.4);
    border-color: transparent;
}

.language-menu a.active:hover {
    background: linear-gradient(135deg, #1a1f50, #2d3875);
    transform: translateX(0);
    box-shadow: 0 6px 20px rgba(34, 40, 100, 0.5);
}

.language-menu a.active::before {
    width: 100%;
    background: linear-gradient(90deg, rgba(255,255,255,0.15), rgba(255,255,255,0.05));
}

/* 控制台按钮简洁样式 */
.login-btn {
    background-color: #e74c3c;
    color: white !important;
    padding: 12px 24px;
    border-radius: 25px;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s ease;
    border: none;
    text-decoration: none;
    margin-left: 5px;
    display: inline-block;
    position: relative;
    overflow: hidden;
}

.login-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(231, 76, 60, 0.4);
    color: white;
    text-decoration: none;
}

/* 微信公众号按钮样式 */
.wechat-btn {
    background: linear-gradient(135deg, #27ae60, #2ecc71);
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 25px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s ease;
    display: inline-block;
    position: relative;
    overflow: hidden;
    cursor: pointer;
}

.wechat-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(39, 174, 96, 0.4);
    color: white;
    text-decoration: none;
}

/* 十度同学按钮样式 */
.shidu-btn {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 25px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s ease;
    display: inline-block;
    position: relative;
    overflow: hidden;
}

.shidu-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(118, 75, 162, 0.4);
    color: white;
    text-decoration: none;
}

/* 画册按钮样式 */
.huace-btn {
    background: linear-gradient(135deg, #ff6b6b, #ee5a24);
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 25px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s ease;
    display: inline-block;
    position: relative;
    overflow: hidden;
}

.huace-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(238, 90, 36, 0.4);
    color: white;
    text-decoration: none;
}
/* 在线客服按钮样式 */
.service-btn {
    background: linear-gradient(135deg, #3498db, #2980b9);
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 25px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s ease;
    display: inline-block;
    position: relative;
    overflow: hidden;
    cursor: pointer;
}

.service-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(52, 152, 219, 0.4);
    color: white;
    text-decoration: none;
}

/* 二维码弹窗样式 */
.qr-modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    animation: fadeIn 0.3s ease;
    align-items: center;
    justify-content: center;
}

.qr-modal-content {
    background-color: white;
    margin: 0;
    padding: 15px;
    border-radius: 10px;
    width: 90%;
    max-width: 300px;
    text-align: center;
    position: relative;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    animation: slideIn 0.3s ease;
    max-height: 80vh;
    overflow-y: auto;
}

/* 客服二维码容器样式 */
.service-qr-content {
    max-width: 500px;
    width: 95%;
}

.service-qr-container {
    display: flex;
    gap: 20px;
    justify-content: center;
    align-items: flex-start;
    flex-wrap: wrap;
}

.service-qr-item {
    flex: 1;
    min-width: 180px;
    max-width: 220px;
    text-align: center;
}

.service-qr-item h4 {
    margin: 0 0 10px 0;
    color: #333;
    font-size: 16px;
    font-weight: 600;
}

.service-qr-item p {
    margin: 10px 0 0 0;
    color: #666;
    font-size: 14px;
    line-height: 1.4;
}

/* 移动端适配 */
@media (max-width: 600px) {
    .service-qr-container {
        flex-direction: column;
        gap: 15px;
    }
    
    .service-qr-item {
        min-width: auto;
        max-width: none;
    }
    
    .service-qr-content {
        max-width: 350px;
    }
}

.qr-close {
    position: absolute;
    right: 15px;
    top: 15px;
    font-size: 28px;
    font-weight: bold;
    color: #aaa;
    cursor: pointer;
    line-height: 1;
}

.qr-close:hover {
    color: #000;
}

.qr-modal-content h3 {
    color: #222864;
    margin-bottom: 10px;
    font-size: 1.3rem;
}

.qr-code-placeholder {
    margin: 10px 0;
    display: flex;
    justify-content: center;
}

.qr-modal-content p {
    color: #666;
    margin-top: 8px;
    font-size: 0.85rem;
}

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

@keyframes slideIn {
    from { transform: translateY(-50px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

/* 电子画册弹窗样式 */
.catalog-modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    animation: fadeIn 0.3s ease;
}

.catalog-modal-content {
    background-color: white;
    margin: 2% auto;
    padding: 20px;
    border-radius: 10px;
    width: 95%;
    max-width: 1200px;
    height: 90%;
    position: relative;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    animation: slideIn 0.3s ease;
    display: flex;
    flex-direction: column;
}

.catalog-close {
    position: absolute;
    right: 15px;
    top: 15px;
    font-size: 28px;
    font-weight: bold;
    color: #aaa;
    cursor: pointer;
    line-height: 1;
    z-index: 10;
}

.catalog-close:hover {
    color: #000;
}

.catalog-modal-content h3 {
    color: #222864;
    margin-bottom: 15px;
    font-size: 1.5rem;
    text-align: center;
    margin-top: 0;
}

.catalog-iframe-container {
    flex: 1;
    width: 100%;
    border-radius: 5px;
    overflow: hidden;
    border: 1px solid #ddd;
}

.catalog-iframe-container iframe {
    width: 100%;
    height: 100%;
    border: none;
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background-color: white;
    margin: 3px 0;
    transition: 0.3s;
}

.hamburger.active span:nth-child(1) {
    transform: rotate(-45deg) translate(-5px, 6px);
}

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

.hamburger.active span:nth-child(3) {
    transform: rotate(45deg) translate(-5px, -6px);
}

/* 首页横幅样式 */
.hero {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
    color: white;
    padding: 120px 0 80px;
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.hero-video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 0;
    transition: opacity 1s ease-out;
    /* Safari和Mac兼容性优化 */
    -webkit-transform: translateZ(0);
    transform: translateZ(0);
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
    /* 确保视频在Safari中正确显示 */
    -webkit-appearance: none;
    appearance: none;
}

.hero-video.hidden {
    opacity: 0;
    pointer-events: none;
}

.hero.video-ended {
    background-color: #222864;
    background-image: linear-gradient(135deg, #222864 0%, #1a1f4a 100%);
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    /* 添加浏览器兼容性前缀 */
    background: rgba(34, 40, 100, 0.8); /* 降级方案 */
    background: -webkit-linear-gradient(rgba(34, 40, 100, 0.8));
    background: -moz-linear-gradient(rgba(34, 40, 100, 0.8));
    background: -o-linear-gradient(rgba(34, 40, 100, 0.8));
    background: linear-gradient(rgba(34, 40, 100, 0.8));
    z-index: 1;
    /* 确保在所有浏览器中正确显示 */
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
}

.hero.video-ended::before {
    /* 降级方案：单一背景图片 */
    background: url(../images/bj.png) center center / cover no-repeat;
    
    /* 现代浏览器：多重背景 */
    background: 
        linear-gradient(rgba(34, 40, 100, 0.8)),
        url(../images/bj.png);
    background-size: auto, cover;
    background-position: center, center;
    background-repeat: no-repeat, no-repeat;
    
    /* 确保背景图片正确显示 */
    background-attachment: scroll, scroll;
    
    /* 添加浏览器前缀支持 */
    -webkit-background-size: auto, cover;
    -moz-background-size: auto, cover;
    -o-background-size: auto, cover;
}

.hero .container {
    position: relative;
    z-index: 2;
    max-width: 1400px;
    padding: 0 60px;
}
.hero-content {
    display: flex;
    align-items: flex-end;
    justify-content: center;
    height: 100%;
}

.hero-text {
    max-width: 1400px;
    text-align: center;
}

.hero-text h1 {
    font-size: 5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: #ffffff;
    position: relative;
    display: inline-block;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.8);
    letter-spacing: 1px;
}

.hero-subtitle {
    font-size: 1.3rem;
    color: #ffffff;
    margin-bottom: 1rem;
    font-weight: 600;
    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.7);
    letter-spacing: 0.5px;
}

.hero-description {
    font-size: 1.1rem;
    color: #ffffff;
    margin-bottom: 1.5rem;
    line-height: 1.8;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.6);
    letter-spacing: 0.3px;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
    justify-content: center;
}

.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    cursor: pointer;
    display: inline-block;
    letter-spacing: 0.5px;
}

.btn-primary {
    background-color: #f5f5f5;
    color: #333;
    border: 1px solid #ddd;
    position: relative;
    overflow: hidden;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    /* 添加浏览器兼容性前缀和降级方案 */
    background: rgba(255, 255, 255, 0.2); /* 降级方案 */
    background: -webkit-linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.5), transparent);
    background: -moz-linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.5), transparent);
    background: -o-linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.5), transparent);
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.5), transparent);
    /* 添加过渡效果的浏览器前缀 */
    -webkit-transition: 0.5s;
    -moz-transition: 0.5s;
    -o-transition: 0.5s;
    transition: 0.5s;
    /* 确保在所有浏览器中正确显示 */
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
}

.btn-primary:hover::before {
    left: 100%;
}

.btn-primary:hover {
    background-color: #e8e8e8;
    /* 添加transform的浏览器前缀 */
    -webkit-transform: translateY(-2px);
    -moz-transform: translateY(-2px);
    -ms-transform: translateY(-2px);
    -o-transform: translateY(-2px);
    transform: translateY(-2px);
    /* 添加box-shadow的浏览器前缀 */
    -webkit-box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    -moz-box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.btn-secondary {
    background-color: transparent;
    color: rgba(255, 255, 255, 0.8);
    border: 1px solid rgba(255, 255, 255, 0.4);
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.btn-secondary::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 0;
    background-color: rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
    z-index: -1;
}

.btn-secondary:hover::after {
    height: 100%;
}

.btn-secondary:hover {
    color: rgba(255, 255, 255, 0.9);
    transform: translateY(-2px);
}

/* 品牌故事样式 */
.about {
    padding: 80px 0;
    background-color: white;
}

.about h2 {
    text-align: center;
    font-size: 2.5rem;
    color: #222864;
    margin-bottom: 3rem;
    font-weight: 700;
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.about-text p {
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
    line-height: 1.8;
    color: #555;
}

.about-features {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.feature-item {
    padding: 2rem;
    background-color: #f8f9fa;
    border-radius: 8px;
    border-left: 4px solid #222864;
}

.feature-item h3 {
    color: #222864;
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.feature-item p {
    color: #666;
    line-height: 1.6;
}

/* 展会活动样式 */
.events {
    padding: 80px 0;
    background-color: #f8f9fa;
}

.events h2 {
    text-align: center;
    font-size: 2.5rem;
    color: #222864;
    margin-bottom: 1rem;
    font-weight: 700;
}

.events-intro {
    text-align: center;
    font-size: 1.2rem;
    color: #666;
    margin-bottom: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.events-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.event-item {
    background-color: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.event-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.event-image {
    width: 100%;
    height: 0px;
    overflow: hidden;
}

.event-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.event-item:hover .event-image img {
    transform: scale(1.05);
}

.event-content {
    padding: 1.5rem;
}

.event-content h3 {
    color: #222864;
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.event-date {
    color: #888;
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.event-content p:last-child {
    color: #666;
    line-height: 1.6;
    margin: 0;
}

/* 核心理念样式 */
.concept {
    padding: 80px 0;
    background-color: #f8f9fa;
}

.concept h2 {
    text-align: center;
    font-size: 2.5rem;
    color: #222864;
    margin-bottom: 1rem;
    font-weight: 700;
}

.concept-intro {
    text-align: center;
    font-size: 1.2rem;
    color: #666;
    margin-bottom: 3rem;
}

.concept-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.concept-item:last-child {
    grid-column: 1 / -1;
}

.concept-item {
    background-color: white;
    padding: 2rem;
    border-radius: 8px;
    text-align: center;
    transition: transform 0.3s ease;
}

.concept-item:hover {
    transform: translateY(-5px);
}

.concept-number {
    background-color: #222864;
    color: white;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    font-weight: 700;
    margin: 0 auto 1rem;
}

.concept-item h3 {
    color: #222864;
    font-size: 1.3rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.concept-item p {
    color: #666;
    line-height: 1.6;
}

/* 产品系列样式 */
.products {
    padding: 6rem 0;
    background-color: white;
    position: relative;
}

.products-header {
    text-align: center;
    margin-bottom: 4rem;
    position: relative;
    z-index: 1;
}

.products h2 {
    font-size: 2.5rem;
    color: #222864;
    margin-bottom: 1rem;
    font-weight: 700;
    position: relative;
}

.products h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background-color: #222864;
    border-radius: 2px;
}

.products-subtitle {
    font-size: 1.2rem;
    color: #666;
    margin-top: 1.5rem;
    font-weight: 400;
}

.products-showcase {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    position: relative;
    z-index: 1;
}

.product-main-card {
    background: white;
    border-radius: 16px;
    padding: 2.5rem;
    box-shadow: 0 10px 30px rgba(34, 40, 100, 0.1);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.product-main-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background-color: #222864;
}

.product-main-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(34, 40, 100, 0.15);
}

.product-card-header {
    display: flex;
    align-items: center;
    margin-bottom: 2rem;
    gap: 1.5rem;
}

.product-icon {
    flex-shrink: 0;
}

.icon-circle {
    width: 60px;
    height: 60px;
    background-color: #222864;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    font-weight: 700;
    box-shadow: 0 4px 12px rgba(34, 40, 100, 0.3);
}

.icon-circle.custom {
    background-color: #e74c3c;
    box-shadow: 0 4px 12px rgba(231, 76, 60, 0.3);
}

.product-title h3 {
    color: #222864;
    font-size: 1.8rem;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.product-tagline {
    color: #666;
    font-size: 1rem;
    margin: 0;
}

.product-highlights {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    margin-bottom: 2rem;
    padding: 1.5rem;
    background: #f8f9fa;
    border-radius: 12px;
}

.highlight-item {
    text-align: center;
}

.highlight-number {
    font-size: 1.5rem;
    font-weight: 700;
    color: #222864;
    margin-bottom: 0.3rem;
}

.highlight-text {
    font-size: 0.9rem;
    color: #666;
    font-weight: 500;
}

.product-details {
    space-y: 1.5rem;
}

.detail-section {
    margin-bottom: 2rem;
}

.detail-section h4 {
    color: #222864;
    font-size: 1.2rem;
    margin-bottom: 1rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.detail-icon {
    font-size: 1.1rem;
}

.detail-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tag {
    background-color: #222864;
    color: white;
    padding: 0.4rem 0.8rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
    transition: all 0.3s ease;
}

.tag:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(34, 40, 100, 0.3);
}

.custom-benefits-list {
    space-y: 1rem;
}

.benefit-item {
    display: flex;
    align-items: flex-start;
    gap: 0.8rem;
    margin-bottom: 1rem;
    padding: 1rem;
    background: #f8f9fa;
    border-radius: 8px;
    border-left: 3px solid #e74c3c;
}

.benefit-icon {
    color: #e74c3c;
    font-weight: 700;
    font-size: 1.1rem;
    flex-shrink: 0;
    margin-top: 0.1rem;
}

.benefit-item span:last-child {
    color: #555;
    line-height: 1.5;
    font-size: 0.95rem;
}

/* 联系我们样式 */
.contact {
    padding: 80px 0;
    background-color: #f8f9fa;
}

.contact h2 {
    text-align: center;
    font-size: 2.5rem;
    color: #222864;
    margin-bottom: 3rem;
    font-weight: 700;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

.contact-info h3 {
    color: #222864;
    font-size: 1.8rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.contact-info p {
    color: #666;
    line-height: 1.8;
    margin-bottom: 1rem;
}

.contact-form {
    background-color: white;
    padding: 2rem;
    border-radius: 12px;
}

.contact-form h3 {
    color: #222864;
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    font-weight: 600;
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 12px;
    margin-bottom: 1rem;
    border: 2px solid #e9ecef;
    border-radius: 6px;
    font-family: inherit;
    transition: border-color 0.3s ease;
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: #222864;
}

/* 页脚样式 */
.footer {
    background-color: #222864;
    color: white;
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-brand h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    font-weight: 700;
}

.footer-brand p {
    color: #a8b3d9;
    line-height: 1.6;
    margin-bottom: 0.5rem;
}

.footer-links h4,
.footer-contact h4 {
    font-size: 1.2rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

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

.footer-links li {
    margin-bottom: 0.5rem;
}

.footer-links a {
    color: #a8b3d9;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: white;
}

.footer-contact p {
    color: #a8b3d9;
    line-height: 1.6;
    margin-bottom: 0.5rem;
}

.footer-bottom {
    border-top: 1px solid #3a4a8c;
    padding-top: 1rem;
    text-align: center;
    color: #a8b3d9;
}

/* 备案号链接样式 */
.footer-bottom a {
    color: #a8b3d9 !important;
    text-decoration: none !important;
    border: none !important;
}

.footer-bottom a:hover {
    color: #a8b3d9 !important;
    text-decoration: none !important;
}

/* 桌面版隐藏移动端按钮 */
.nav-buttons {
    display: none;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .container {
        padding: 0 1rem;
    }
    
    .nav-buttons {
        display: flex;
        justify-content: center;
        gap: 1rem;
        margin-top: 1rem;
        padding: 0 1rem;
    }
    .hamburger {
        display: flex;
    }
    
    /* 移动端隐藏首页按钮 */
    .nav-menu li:first-child {
        display: none !important;
    }
    
    /* 移动端电子画册弹窗优化 */
    .catalog-modal-content {
        margin: 5% auto;
        width: 98%;
        height: 85%;
        padding: 15px;
    }
    
    .catalog-modal-content h3 {
        font-size: 1.2rem;
        margin-bottom: 10px;
    }
    
    /* 移动端展会活动样式 */
    .events {
        padding: 60px 0;
    }
    
    .events h2 {
        font-size: 2rem;
    }
    
    .events-intro {
        font-size: 1rem;
    }
    
    .events-gallery {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .event-content {
        padding: 1.2rem;
    }
    
    .event-content h3 {
        font-size: 1.2rem;
    }
    
    .nav-menu {
        position: fixed;
        left: -50%;
        top: 60px;
        flex-direction: column;
        background-color: #222864;
        width: 50%;
        max-width: 250px;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
        z-index: 999;
        padding: 1rem 0;
        border-radius: 0 0px 10px 0;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-menu li {
        margin: 1rem 0;
    }
    
    .nav-menu a {
        font-size: 1.1rem;
        padding: 0.2rem 1rem;
        display: block;
    }

    /* 移动端语言切换菜单样式 */
    .language-dropdown {
        position: relative;
        margin: 1rem 0;
    }

    .language-toggle {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 12px 16px;
        width: calc(100% - 16px);
        margin: 0 8px;
        font-size: 1.1rem;
        border: none;
        background: none;
        border-radius: 6px;
        transition: all 0.3s ease;
        min-width: 140px;
        white-space: nowrap;
    }

    .language-toggle:hover {
        background: rgba(255, 255, 255, 0.1);
        transform: translateY(-1px);
    }

    .language-toggle .language-icon {
        font-size: 18px;
        filter: drop-shadow(0 1px 2px rgba(0, 0, 0, 0.5));
    }

    .language-toggle .language-text {
        font-weight: 500;
        text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
        color: white;
        min-width: 90px;
        text-align: left;
    }

    .language-toggle .dropdown-arrow {
        font-size: 12px;
        filter: drop-shadow(0 1px 2px rgba(0, 0, 0, 0.5));
    }

    .language-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        background-color: rgba(255, 255, 255, 0.98);
        box-shadow: 0 6px 30px rgba(0, 0, 0, 0.25);
        border-radius: 16px;
        margin: 0.5rem 0.5rem 0 0.5rem;
        padding: 12px 0;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease;
        border: 1px solid rgba(0, 0, 0, 0.1);
        backdrop-filter: blur(20px);
        min-width: 200px;
        white-space: nowrap;
    }

    .language-dropdown.active .language-menu {
        max-height: 400px;
    }

    .language-menu a {
        padding: 14px 18px;
        color: #1a1a1a !important;
        background: rgba(248, 249, 250, 0.95);
        font-size: 1rem;
        font-weight: 600;
        margin: 4px 10px;
        border-radius: 10px;
        transition: all 0.3s ease;
        position: relative;
        overflow: hidden;
        border: 1px solid rgba(0, 0, 0, 0.15);
        backdrop-filter: blur(5px);
        white-space: nowrap;
    }

    .language-menu a::before {
        content: '';
        position: absolute;
        left: 0;
        top: 0;
        width: 0;
        height: 100%;
        background: linear-gradient(90deg, #222864, #3b4a8c);
        transition: width 0.3s ease;
        z-index: -1;
    }

    .language-menu a:hover {
        background: rgba(34, 40, 100, 0.08);
        color: #1a1a1a !important;
        transform: translateX(6px);
        box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
        border-color: rgba(34, 40, 100, 0.2);
    }

    .language-menu a:hover::before {
        width: 5px;
    }

    .language-menu a.active {
        background: linear-gradient(135deg, #222864, #3b4a8c);
        color: white !important;
        font-weight: 600;
        box-shadow: 0 4px 16px rgba(34, 40, 100, 0.4);
        border-color: transparent;
    }

    .language-menu a.active:hover {
        background: linear-gradient(135deg, #1a1f50, #2d3875);
        transform: translateX(0);
        box-shadow: 0 6px 20px rgba(34, 40, 100, 0.5);
    }

    .language-menu a.active::before {
        width: 100%;
        background: linear-gradient(90deg, rgba(255,255,255,0.15), rgba(255,255,255,0.05));
    }
    
    .nav-buttons .login-btn {
         display: none;
     }
     
     .nav-buttons .wechat-btn {
         padding: 8px 16px;
         font-size: 0.9rem;
         margin: 0;
         border-radius: 6px;
         text-decoration: none;
     }
     
     /* 扫码关注小程序弹窗移动端适配 */
     .qr-modal-content {
         margin: 2% auto;
         padding: 20px;
         width: 95%;
         max-width: 350px;
         max-height: 95vh;
     }
     
     .qr-modal-content h3 {
         font-size: 1.3rem;
         margin-bottom: 15px;
     }
     
     .qr-code-placeholder svg {
         width: 180px;
         height: 180px;
     }
    
    /* 隐藏桌面版按钮 */
     .nav-login {
         display: none;
     }
     
     .nav-logo {
        gap: 0.5rem;
    }
    
    .logo-text h2 {
        font-size: 1.2rem;
    }
    
    .logo-text span {
        font-size: 0.8rem;
    }
    
    .hero {
        padding: 100px 0 60px;
        min-height: 80vh;
        background-position: center center;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .hero-text {
        text-align: center;
        max-width: 100%;
    }
    
    .hero-text h1 {
        font-size: 1.8rem;
        margin-bottom: 1.2rem;
        line-height: 1.3;
        text-align: center;
        word-break: break-word;
    }
    
    .hero-subtitle {
        font-size: 1rem;
        line-height: 1.4;
        margin-bottom: 0.8rem;
        text-align: center;
        word-break: break-word;
    }
    
    .hero-description {
        font-size: 0.9rem;
        margin-bottom: 1.5rem;
        line-height: 1.5;
        text-align: center;
        word-break: break-word;
    }
    
    .hero-text h1::after {
        left: 50%;
        transform: translateX(-50%);
    }
    
    .about-grid,
    .products-showcase,
    .contact-content,
    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .products {
        padding: 60px 0;
    }
    
    .products-header {
        margin-bottom: 3rem;
    }
    
    .products h2 {
        font-size: 2rem;
    }
    
    .products-subtitle {
        font-size: 1rem;
    }
    
    .product-main-card {
        padding: 1.5rem;
        border-radius: 12px;
    }
    
    .icon-circle {
        width: 50px;
        height: 50px;
        font-size: 1.2rem;
    }
    
    .product-title h3 {
        font-size: 1.5rem;
    }
    
    .product-tagline {
        font-size: 0.9rem;
    }
    
    .highlight-number {
        font-size: 1.2rem;
    }
    
    .highlight-text {
        font-size: 0.8rem;
    }
    
    .detail-section h4 {
        font-size: 1.1rem;
    }
    
    .benefit-item {
        padding: 0.8rem;
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
    
    .benefit-item span:last-child {
        font-size: 0.9rem;
    }
    
    .product-main-card {
        padding: 2rem;
    }
    
    .product-card-header {
        flex-direction: column;
        text-align: center;
        gap: 1rem;
    }
    
    .product-highlights {
        grid-template-columns: 1fr;
        gap: 1rem;
        padding: 1rem;
    }
    
    .detail-tags {
        justify-content: center;
    }
    
    .tag {
        font-size: 0.8rem;
        padding: 0.3rem 0.6rem;
    }
    
    .concept-grid {
        grid-template-columns: 1fr;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
        margin-top: 1.5rem;
    }
    
    .btn {
        width: 200px;
        text-align: center;
        padding: 14px 24px;
        font-size: 1.1rem;
        margin-bottom: 0.5rem;
    }
    
    .btn-primary:active,
    .btn-secondary:active {
        transform: scale(0.98);
    }
    
    .product-features {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 1rem;
    }
    
    .hero {
        padding: 120px 0 80px;
        min-height: 80vh;
        background-position: center center;
    }
    
    .hero-text {
        margin: 0 auto;
        text-align: center;
    }
    
    .hero-text h1 {
        font-size: 3rem;
        margin-bottom: 0.8rem;
        line-height: 1.3;
        text-align: center;
        word-break: break-word;
    }
    
    .hero-subtitle {
        font-size: 1rem;
        line-height: 1.4;
        text-align: center;
        word-break: break-word;
    }
    
    .hero-description {
        font-size: 1rem;
        margin-bottom: 1.5rem;
        line-height: 1.5;
        text-align: center;
        word-break: break-word;
    }
    
    .hero-buttons {
        flex-direction: column;
        gap: 0.8rem;
        align-items: center;
    }
    
    .btn {
        padding: 10px 20px;
        font-size: 0.9rem;
        min-width: 120px;
        text-align: center;
        white-space: nowrap;
    }
    
    .about,
    .concept,
    .products,
    .contact {
        padding: 60px 0;
    }
    
    .about h2,
    .concept h2,
    .products h2,
    .contact h2 {
        font-size: 2rem;
    }
    
    .contact-form {
        padding: 1.5rem;
    }
    
    /* 移动端QR码弹窗优化 */
    .qr-modal-content {
        margin: 0;
        padding: 12px;
        max-width: 260px;
        width: 85%;
        max-height: 70vh;
    }
    
    .qr-modal-content h3 {
        font-size: 1.1rem;
        margin-bottom: 8px;
    }
    
    .qr-code-placeholder {
        margin: 8px 0;
    }
    
    .qr-modal-content p {
        font-size: 0.75rem;
        margin-top: 6px;
    }
}

/* 覆盖导航菜单的白色文字 */
.nav-menu .language-menu a {
    color: #1a1a1a !important;
}

.nav-menu .language-menu a:hover {
    color: #1a1a1a !important;
}

.nav-menu .language-menu a.active {
    color: white !important;
}

/* 移动端语言菜单文字颜色覆盖 */
@media (max-width: 768px) {
    .nav-menu .language-menu a {
        color: #1a1a1a !important;
    }

    .nav-menu .language-menu a:hover {
        color: #1a1a1a !important;
    }

    .nav-menu .language-menu a.active {
        color: white !important;
    }
}