/* 首页专用样式 */

/* 全局样式 */
body {
    margin: 0;
    padding: 0;
    font-family: 'Microsoft YaHei', 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background: #fff;
}

/* 顶部导航栏 */
.header {
    background: #fff;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 15px 0;
}

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

/* Logo容器 */
.logo-container {
    display: flex;
    align-items: center;
    gap: 12px;
}

/* Logo图标 */
.logo-icon {
    width: 20px;
    height: 20px;
    object-fit: contain;
    transition: transform 0.3s ease;
}

.logo-icon:hover {
    transform: scale(1.1);
}

img.logo {
    font-size: 24px;
    font-weight: bold;
    color: #1a73e8;
    text-decoration: none;
    max-width: 300px;
}
.nav-menu {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: 30px;
    align-items: center;
}

.nav-menu li a {
    text-decoration: none;
    color: #333;
    font-weight: 600;
    font-size: 16px;
    transition: all 0.3s ease;
    padding: 10px 20px;
    border-radius: 6px;
    position: relative;
}

.nav-menu li a:hover {
    color: #1a73e8;
    background: #e8f0fe;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(26, 115, 232, 0.15);
}

.nav-menu li a.active {
    color: #1a73e8;
    background: #e8f0fe;
    font-weight: 700;
}

/* 下拉菜单样式 - 专业版 */
.dropdown {
    position: relative;
}

.dropdown-toggle {
    position: relative;
    padding: 8px 25px 8px 16px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.dropdown-toggle::after {
    content: '▼';
    font-size: 10px;
    margin-left: 8px;
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
    transition: transform 0.3s ease;
}

.dropdown:hover .dropdown-toggle::after {
    transform: translateY(-50%) rotate(180deg);
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: #fff;
    min-width: 280px;
    box-shadow: 0 8px 30px rgba(0,0,0,0.15);
    border-radius: 8px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-15px);
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    z-index: 9999;
    list-style: none;
    padding: 0;
    margin: 0;
    border: 1px solid #e8e8e8;
}

.dropdown:hover .dropdown-menu,
.dropdown.hover-active .dropdown-menu {
    opacity: 1 !important;
    visibility: visible !important;
    transform: translateY(5px) !important;
    display: block !important;
}

.dropdown-menu li {
    margin: 0;
    border-bottom: 1px solid #f0f0f0;
}

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

.dropdown-menu a {
    display: block;
    padding: 12px 20px;
    color: #333;
    text-decoration: none;
    font-size: 14px;
    transition: all 0.3s ease;
    position: relative;
    font-weight: 500;
}

.dropdown-menu a:hover {
    background: linear-gradient(135deg, #f8f9fa 0%, #e8f0fe 100%);
    color: #1a73e8;
    padding-left: 25px;
}

.dropdown-menu a:hover::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: #1a73e8;
    border-radius: 0 2px 2px 0;
}

/* 二级下拉菜单 - 专业版 */
.dropdown-submenu {
    position: relative;
}

.dropdown-submenu > a {
    position: relative;
    padding-right: 35px;
    font-weight: 600;
    color: #1a73e8;
}

.dropdown-submenu > a::after {
    content: '▶';
    font-size: 10px;
    position: absolute;
    right: 15px;
    top: 50%;
    transform: translateY(-50%);
    transition: transform 0.3s ease;
}

.dropdown-submenu:hover > a::after {
    transform: translateY(-50%) rotate(90deg);
}

.submenu {
    position: absolute;
    left: 100%;
    top: -1px;
    background: #fff;
    min-width: 220px;
    box-shadow: 0 8px 30px rgba(0,0,0,0.15);
    border-radius: 8px;
    opacity: 0;
    visibility: hidden;
    transform: translateX(-15px);
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    z-index: 10000;
    list-style: none;
    padding: 0;
    margin: 0;
    border: 1px solid #e8e8e8;
}

.dropdown-submenu:hover .submenu,
.dropdown-submenu.hover-active .submenu {
    opacity: 1 !important;
    visibility: visible !important;
    transform: translateX(5px) !important;
    display: block !important;
}

.submenu li {
    border-bottom: 1px solid #f0f0f0;
}

.submenu li:last-child {
    border-bottom: none;
}

.submenu a {
    padding: 10px 20px;
    font-size: 13px;
    font-weight: 400;
    color: #666;
}

.submenu a:hover {
    background: linear-gradient(135deg, #f8f9fa 0%, #e8f0fe 100%);
    color: #1a73e8;
    padding-left: 25px;
}

.submenu a:hover::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: #1a73e8;
    border-radius: 0 2px 2px 0;
}

/* 响应式设计 - 移动设备适配 */
@media (max-width: 768px) {
    /* 导航栏优化 */
    .header {
        padding: 10px 0;
    }
    
    .header-container {
        padding: 0 15px;
        flex-direction: column;
        align-items: flex-start;
    }
    
    .logo-container {
        margin-bottom: 10px;
    }
    
    .logo {
        font-size: 18px;
    }
    
    .nav-menu {
        flex-direction: column;
        gap: 8px;
        width: 100%;
    }
    
    .nav-menu li {
        width: 100%;
    }
    
    .nav-menu li a {
        display: block;
        padding: 12px 20px;
        border: 2px solid #e8f0fe;
        border-radius: 8px;
        text-align: center;
        font-size: 15px;
        background: #f8f9fa;
    }
    
    .nav-menu li a:hover {
        background: #1a73e8;
        color: white;
        border-color: #1a73e8;
        transform: none;
        box-shadow: none;
    }
    
    .nav-menu li a.active {
        background: #1a73e8;
        color: white;
        border-color: #1a73e8;
    }
    
    /* 下拉菜单优化 */
    .dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        border: 1px solid #e0e0e0;
        margin-top: 5px;
        display: none;
        width: 100%;
    }
    
    .dropdown.active .dropdown-menu {
        display: block;
    }
    
    .submenu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        border-left: 3px solid #e0e0e0;
        margin-left: 20px;
        display: none;
        width: calc(100% - 20px);
    }
    
    .dropdown-submenu.active .submenu {
        display: block;
    }
    
    .dropdown-toggle::after {
        content: '▼';
    }
    
    .dropdown-submenu > a::after {
        content: '▶';
    }
    
    /* 轮播图优化 */
    .banner-slider {
        margin-top: 120px;
        height: 300px;
    }
    
    .slide-content h2 {
        font-size: 20px;
        margin-bottom: 10px;
    }
    
    .slide-content p {
        font-size: 14px;
        margin-bottom: 15px;
    }
    
    .slide-btn {
        padding: 8px 16px;
        font-size: 14px;
    }
    
    /* 英雄区域优化 */
    .hero h1 {
        font-size: 24px;
        margin-bottom: 15px;
    }
    
    .hero p {
        font-size: 16px;
        margin-bottom: 20px;
    }
    
    .cta-button {
        padding: 10px 20px;
        font-size: 16px;
    }
    
    /* 产品特色优化 */
    .feature-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .feature-card {
        padding: 20px;
    }
    
    /* 应用场景优化 */
    .app-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    /* 联系我们优化 */
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
}



/* 轮播图区域 - 全屏图片展示 */
.banner-slider {
    margin-top: 80px;
    position: relative;
    overflow: hidden;
    height: 600px;
    background: #000;
}

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

.slider-wrapper {
    display: flex;
    height: 100%;
    transition: transform 0.5s ease-in-out;
}

.slide {
    min-width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    opacity: 0;
    transition: opacity 0.5s ease-in-out;
}

.slide.active {
    opacity: 1;
    position: relative;
}

.slide-image {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

.image-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 48px;
    color: white;
    font-weight: bold;
    text-align: center;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
}

.slide-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.3);
    display: flex;
    align-items: flex-start;
    justify-content: flex-start;
    padding: 80px 60px;
}

.slide-content {
    text-align: left;
    color: white;
    max-width: 600px;
}

.slide-content h2 {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 20px;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
}

.slide-content p {
    font-size: 20px;
    line-height: 1.6;
    margin-bottom: 30px;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.5);
    opacity: 0.9;
}

.slide-btn {
    display: inline-block;
    background: #1a73e8;
    color: white;
    padding: 15px 35px;
    text-decoration: none;
    border-radius: 30px;
    font-weight: 600;
    font-size: 18px;
    transition: all 0.3s;
    box-shadow: 0 4px 15px rgba(0,0,0,0.3);
}

.slide-btn:hover {
    background: #0d47a1;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0,0,0,0.4);
}

.slider-controls {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    gap: 20px;
    z-index: 10;
}

.prev-btn, .next-btn {
    background: rgba(255, 255, 255, 0.8);
    border: none;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    font-size: 24px;
    cursor: pointer;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 10px rgba(0,0,0,0.3);
}

.prev-btn:hover, .next-btn:hover {
    background: #1a73e8;
    color: white;
    transform: scale(1.1);
}

.slider-dots {
    display: flex;
    gap: 12px;
}

.dot {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    transition: all 0.3s;
}

.dot.active {
    background: #1a73e8;
    transform: scale(1.3);
}

.dot:hover {
    background: #1a73e8;
    transform: scale(1.2);
}

/* 英雄区域 */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 180px 0 100px;
    text-align: center;
    margin-top: 0;
}

.hero h1 {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 20px;
    text-shadow: 0 2px 4px rgba(0,0,0,0.3);
}

.hero p {
    font-size: 20px;
    margin-bottom: 30px;
    opacity: 0.9;
}

.cta-button {
    display: inline-block;
    background: #ff6b35;
    color: white;
    padding: 15px 30px;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    font-size: 18px;
    transition: all 0.3s;
    box-shadow: 0 4px 15px rgba(255,107,53,0.4);
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255,107,53,0.6);
}

/* 产品特色区域 */
.features {
    padding: 80px 0;
    background: #f8f9fa;
}

.section-title {
    text-align: center;
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 60px;
    color: #333;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.feature-card {
    background: white;
    padding: 40px 30px;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
    transition: transform 0.3s;
}

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

.feature-icon {
    font-size: 48px;
    color: #1a73e8;
    margin-bottom: 20px;
}

.feature-title {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 15px;
    color: #333;
}

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

/* 应用场景 */
.applications {
    padding: 80px 0;
    background: white;
}

.app-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.app-card {
    background: #f8f9fa;
    padding: 30px;
    border-radius: 12px;
    text-align: center;
    transition: all 0.3s;
}

.app-card:hover {
    background: #e9ecef;
    transform: translateY(-3px);
}

.app-image {
    width: 100%;
    height: 200px;
    background: #ddd;
    border-radius: 8px;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 48px;
    color: #666;
}

/* 联系我们 */
.contact {
    background: #2c3e50;
    color: white;
    padding: 60px 0;
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.contact-info h3 {
    font-size: 24px;
    margin-bottom: 20px;
    color: #ff6b35;
}

.contact-info p {
    margin-bottom: 10px;
    opacity: 0.9;
}

/* 页脚 */
.footer {
    background: #1a252f;
    color: white;
    padding: 40px 0;
    text-align: center;
}

.footer p {
    margin: 5px 0;
    opacity: 0.8;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .header-container {
        flex-direction: column;
        gap: 20px;
    }

    .nav-menu {
        gap: 20px;
        flex-wrap: wrap;
        justify-content: center;
    }

    .hero h1 {
        font-size: 36px;
    }

    .hero p {
        font-size: 18px;
    }

    .feature-grid,
    .app-grid {
        grid-template-columns: 1fr;
    }

    .banner-slider {
        height: 500px;
    }

    .slide-content h2 {
        font-size: 36px;
    }

    .slide-content p {
        font-size: 18px;
    }

    .slide-btn {
        padding: 12px 30px;
        font-size: 16px;
    }

    .prev-btn, .next-btn {
        width: 40px;
        height: 40px;
        font-size: 20px;
    }

    .slider-controls {
        bottom: 20px;
    }
}

@media (max-width: 480px) {
    .banner-slider {
        height: 400px;
    }

    .slide-content h2 {
        font-size: 28px;
    }

    .slide-content p {
        font-size: 16px;
    }

    .image-placeholder {
        font-size: 36px;
    }
}