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

:root {
    /* 主色调 */
    --primary-color: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #3b82f6;
    
    /* 辅助色调 */
    --secondary-color: #64748b;
    --accent-color: #f59e0b;
    
    /* 中性色 */
    --white: #ffffff;
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;
    
    /* 字体 */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    
    /* 阴影 */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    
    /* 边框半径 */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    
    /* 间距 */
    --spacing-xs: 0.5rem;
    --spacing-sm: 0.75rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    
    /* 容器宽度 */
    --container-max-width: 1200px;
}

body {
    font-family: var(--font-family);
    line-height: 1.6;
    color: var(--gray-700);
    background-color: var(--white);
}

.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--gray-200);
    z-index: 1000;
    transition: all 0.3s ease;
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) var(--spacing-lg);
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.logo {
    height: 40px;
    width: auto;
}

.brand-text {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary-color);
}

.nav-menu {
    flex: 1;
    margin: 0 var(--spacing-2xl);
}

.nav-list {
    display: flex;
    list-style: none;
    gap: var(--spacing-xl);
    justify-content: center;
}

.nav-link {
    text-decoration: none !important;
    color: var(--gray-600);
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-color);
    text-decoration: none !important;
}

.nav-link:link,
.nav-link:visited {
    text-decoration: none !important;
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--primary-color);
}

.nav-dropdown {
    position: relative;
}

.dropdown-toggle {
    cursor: pointer;
    text-decoration: none !important;
}

.dropdown-toggle:link,
.dropdown-toggle:visited {
    text-decoration: none !important;
}

.dropdown-toggle::after {
    content: '▼';
    font-size: 0.75rem;
    margin-left: 0.5rem;
    transition: transform 0.3s ease;
}

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

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(-10px);
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    padding: var(--spacing-sm) 0;
    min-width: 200px;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 1001;
    pointer-events: none;
}

.nav-dropdown:hover .dropdown-menu,
.nav-dropdown.active .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
    pointer-events: auto;
}

.dropdown-menu li {
    list-style: none;
}

.dropdown-menu a {
    display: block;
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--gray-700);
    text-decoration: none !important;
    font-size: 0.875rem;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.dropdown-menu a:hover {
    background: var(--gray-50);
    color: var(--primary-color);
    text-decoration: none !important;
}

.dropdown-menu a:link,
.dropdown-menu a:visited {
    text-decoration: none !important;
}

.nav-controls {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.language-switch {
    background: none;
    border: 1px solid var(--gray-300);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 0.875rem;
}

.language-switch:hover {
    background: var(--gray-100);
}

.language-switch.active {
    background: var(--primary-color);
    color: var(--white);
    border-color: var(--primary-color);
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 3px;
}

.mobile-menu-toggle span {
    width: 25px;
    height: 3px;
    background: var(--gray-600);
    transition: all 0.3s ease;
}

/* 按钮样式 */
.btn-primary,
.btn-secondary,
.btn-outline {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-md);
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
    font-size: 0.875rem;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: var(--gray-100);
    color: var(--gray-700);
}

.btn-secondary:hover {
    background: var(--gray-200);
}

.btn-outline {
    background: transparent;
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
}

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

.btn-primary.large,
.btn-secondary.large {
    padding: var(--spacing-md) var(--spacing-2xl);
    font-size: 1rem;
}

.full-width {
    width: 100%;
}

/* 首页幻灯片展示 */
.hero-slider {
    position: relative;
    height: 100vh;
    overflow: hidden;
}

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

.slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 1s ease-in-out;
    z-index: 1;
}

.slide.active {
    opacity: 1;
    z-index: 2;
}

.slide-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -2;
}

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

.slide-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.7) 0%, rgba(59, 130, 246, 0.5) 100%);
    z-index: -1;
}

.slide-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    color: white;
    max-width: 800px;
    padding: 0 20px;
    z-index: 3;
}

.slide-title {
    margin-bottom: 20px;
    animation: slideInUp 1s ease-out;
}

.slide-title .title-cn {
    display: block;
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 10px;
    line-height: 1.2;
}

.slide-title .title-en {
    display: block;
    font-size: 2.5rem;
    font-weight: 600;
    opacity: 0.9;
}

.slide-subtitle {
    font-size: 1.3rem;
    margin-bottom: 40px;
    opacity: 0.9;
    line-height: 1.6;
    animation: slideInUp 1s ease-out 0.2s both;
}

.slide-subtitle .subtitle-cn,
.slide-subtitle .subtitle-en {
    display: block;
}

.slide-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    margin-bottom: 60px;
    flex-wrap: wrap;
    animation: slideInUp 1s ease-out 0.4s both;
}

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

.slider-arrow {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    color: white;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.slider-arrow:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: scale(1.1);
}

.slider-dots {
    display: flex;
    gap: 10px;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
}

.dot.active {
    background: white;
    transform: scale(1.2);
}

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

/* 幻灯片指示器 */
.slider-indicators {
    position: absolute;
    bottom: 120px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 10;
}

.slider-indicators .hero-stats {
    display: flex;
    justify-content: center;
    gap: 60px;
    flex-wrap: wrap;
}

.slider-indicators .stat-item {
    text-align: center;
}

.slider-indicators .stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 5px;
}

.slider-indicators .stat-label {
    font-size: 1.1rem;
    opacity: 0.8;
}

/* 动画效果 */
@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

/* 高亮动画效果 */
.highlight {
    animation: highlightSection 1s ease-in-out;
}

@keyframes highlightSection {
    0% {
        box-shadow: 0 0 0 rgba(0, 123, 255, 0.5);
    }
    50% {
        box-shadow: 0 0 20px rgba(0, 123, 255, 0.5);
    }
    100% {
        box-shadow: 0 0 0 rgba(0, 123, 255, 0);
    }
}

/* 响应式样式 */
@media (max-width: 768px) {
    .slide-title .title-cn {
        font-size: 2.5rem;
    }
    
    .slide-title .title-en {
        font-size: 2rem;
    }
    
    .slide-subtitle {
        font-size: 1.1rem;
    }
    
    .slider-controls {
        bottom: 30px;
    }
    
    .slider-indicators {
        bottom: 100px;
    }
    
    .slider-indicators .hero-stats {
        gap: 30px;
    }
    
    .slider-indicators .stat-number {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    .slide-title .title-cn {
        font-size: 2rem;
    }
    
    .slide-title .title-en {
        font-size: 1.6rem;
    }
    
    .slide-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .slider-arrow {
        width: 40px;
        height: 40px;
    }
    
    .slider-indicators .hero-stats {
        flex-direction: column;
        gap: 20px;
    }
}

/* 章节通用样式 */
section {
    padding: var(--spacing-3xl) 0;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--gray-800);
    margin-bottom: var(--spacing-md);
}

.section-header p {
    font-size: 1.125rem;
    color: var(--gray-600);
    max-width: 600px;
    margin: 0 auto;
}

/* 服务卡片 */
.services {
    background: var(--gray-50);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-xl);
    max-width: 1200px;
    margin: 0 auto;
}

@media (max-width: 1200px) {
    .services-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 992px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .services-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
}

.service-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-md);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    text-align: center;
    min-height: 420px;
    display: flex;
    flex-direction: column;
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.service-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-md);
    color: var(--white);
    font-size: 1.75rem;
}

.service-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--gray-800);
    margin-bottom: var(--spacing-sm);
}

.service-card > p {
    color: var(--gray-600);
    margin-bottom: var(--spacing-md);
    font-size: 0.9rem;
    line-height: 1.5;
}

.service-features {
    list-style: none;
    margin-bottom: var(--spacing-md);
    flex-grow: 1;
}

.service-features li {
    padding: var(--spacing-xs) 0;
    color: var(--gray-600);
    position: relative;
    font-size: 0.85rem;
}

.service-features li::before {
    content: '✓';
    color: var(--primary-color);
    margin-right: var(--spacing-xs);
    font-weight: bold;
}

.service-card .btn-outline,
.service-card a.btn-outline {
    margin-top: auto;
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: 0.9rem;
    width: 100%;
    max-width: 160px;
    text-decoration: none;
    text-align: center;
    display: inline-block;
}

/* 行业解决方案 */
.industries-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-xl);
}

.industry-card {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    padding: var(--spacing-2xl);
    transition: all 0.3s ease;
    text-align: center;
    text-decoration: none;
    color: inherit;
    display: block;
}

.industry-card:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-lg);
}

.industry-icon {
    width: 60px;
    height: 60px;
    background: var(--gray-100);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-lg);
    color: var(--primary-color);
    font-size: 1.5rem;
}

.industry-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--gray-800);
    margin-bottom: var(--spacing-md);
}

.industry-card p {
    color: var(--gray-600);
    line-height: 1.6;
}

/* 案例展示 */
.cases {
    background: var(--gray-50);
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: var(--spacing-2xl);
}

.case-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: transform 0.3s ease;
}

.case-card:hover {
    transform: translateY(-3px);
}

.case-image {
    height: 200px;
    overflow: hidden;
}

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

.case-card:hover .case-image img {
    transform: scale(1.05);
}

.case-content {
    padding: var(--spacing-2xl);
}

.case-content h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--gray-800);
    margin-bottom: var(--spacing-xs);
}

.case-category {
    color: var(--primary-color);
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: var(--spacing-md);
}

.case-content > p {
    color: var(--gray-600);
    margin-bottom: var(--spacing-lg);
}

.case-stats {
    display: flex;
    gap: var(--spacing-lg);
    font-size: 0.875rem;
    color: var(--gray-500);
}

/* 行业特点描述 */
.industry-characteristics {
    padding: 80px 0;
    background: linear-gradient(135deg, #f8f9ff 0%, #e8f0ff 100%);
}

.characteristics-content {
    width: 100%;
    margin: 0 auto;
    text-align: center;
    padding: 0 40px;
}

.characteristics-box {
    background: linear-gradient(135deg, #ffffff 0%, #f8f9ff 100%);
    border: 1px solid #e1e8f0;
    border-radius: 20px;
    padding: 50px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    position: relative;
    overflow: hidden;
    margin: 0 20px;
}

.characteristics-box::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--primary-light));
}

.characteristics-box::after {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, transparent, rgba(37, 99, 235, 0.03), transparent);
    transform: rotate(45deg);
}

.characteristics-title {
    font-size: 28px;
    font-weight: 700;
    color: var(--gray-800);
    margin-bottom: 20px;
    position: relative;
}

.characteristics-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--primary-light));
    border-radius: 2px;
}

.characteristics-intro {
    font-size: 18px;
    line-height: 1.8;
    color: var(--gray-600);
    margin-bottom: 0;
    position: relative;
    z-index: 1;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .characteristics-content {
        padding: 0 20px;
    }
    
    .characteristics-box {
        padding: 30px 20px;
        margin: 0 10px;
    }
    
    .characteristics-title {
        font-size: 24px;
    }
    
    .characteristics-intro {
        font-size: 16px;
    }
}

@media (max-width: 480px) {
    .characteristics-content {
        padding: 0 15px;
    }
    
    .characteristics-box {
        padding: 25px 15px;
        margin: 0 5px;
    }
    
    .characteristics-title {
        font-size: 22px;
    }
    
    .characteristics-intro {
        font-size: 15px;
    }
}

/* 查看更多案例按钮 */
.view-more-cases,
.cases-cta {
    text-align: center;
    margin-top: var(--spacing-3xl);
}

.view-more-cases .btn,
.cases-cta .btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-lg) var(--spacing-2xl);
    font-size: 1.125rem;
    font-weight: 500;
}

/* 价格与流程 */
.pricing-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: start;
}

.pricing-calc,
.workflow {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-2xl);
    box-shadow: var(--shadow-md);
}

.pricing-calc h3,
.workflow h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--gray-800);
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-group label {
    display: block;
    font-weight: 500;
    color: var(--gray-700);
    margin-bottom: var(--spacing-xs);
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: var(--spacing-sm);
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    transition: border-color 0.3s ease;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.workflow-steps {
    display: grid;
    gap: var(--spacing-lg);
}

.step {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
}

.step-number {
    width: 30px;
    height: 30px;
    background: var(--primary-color);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.875rem;
    font-weight: 600;
    flex-shrink: 0;
}

.step h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--gray-800);
    margin-bottom: var(--spacing-xs);
}

.step p {
    color: var(--gray-600);
    font-size: 0.875rem;
}

/* 联系我们 */
.contact {
    background: var(--gray-50);
}

.contact-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-3xl);
}

.contact-info-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    max-width: 1200px;
    margin: 0 auto;
}

.info-card {
    background: var(--white);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-lg);
    padding: 2rem 1.5rem;
    text-align: center;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-md);
    min-height: 280px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.info-card:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-lg);
    transform: translateY(-5px);
}

.info-icon {
    margin-bottom: 1.5rem;
}

.info-icon i {
    font-size: 2.5rem;
    color: var(--primary-color);
    width: 80px;
    height: 80px;
    background: var(--gray-50);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
}

.info-card h4 {
    font-size: 1.4rem;
    margin-bottom: 1rem;
    color: var(--gray-800);
    font-weight: 600;
}

.info-card p {
    margin: 0.5rem 0;
    color: var(--gray-600);
    font-size: 1rem;
    line-height: 1.5;
}

.contact-form {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-2xl);
    box-shadow: var(--shadow-md);
}

.contact-form h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--gray-800);
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

/* 页脚 */
.footer {
    background: var(--gray-800);
    color: var(--gray-300);
    padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
}

.footer-section h4 {
    color: var(--white);
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.footer-section p {
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
}

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

.footer-section ul li {
    margin-bottom: var(--spacing-xs);
}

.footer-section ul li a {
    color: var(--gray-300);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section ul li a:hover {
    color: var(--primary-color);
}

.social-links {
    display: flex;
    gap: var(--spacing-md);
}

.social-links a {
    width: 36px;
    height: 36px;
    background: var(--gray-700);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    text-decoration: none;
    transition: background 0.3s ease;
}

.social-links a:hover {
    background: var(--primary-color);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--gray-700);
    color: var(--gray-400);
}

/* 在线客服 */
.live-chat {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 1000;
}

.chat-toggle {
    width: 60px;
    height: 60px;
    background: var(--primary-color);
    border-radius: 50%;
    border: none;
    color: var(--white);
    font-size: 1.5rem;
    cursor: pointer;
    box-shadow: var(--shadow-lg);
    transition: all 0.3s ease;
}

.chat-toggle:hover {
    background: var(--primary-dark);
    transform: scale(1.05);
}

.chat-panel {
    position: absolute;
    bottom: 80px;
    right: 0;
    width: 350px;
    height: 500px;
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    display: none;
    flex-direction: column;
    overflow: hidden;
}

.chat-panel.active {
    display: flex;
}

.chat-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md);
    background: var(--primary-color);
    color: var(--white);
}

.chat-header h4 {
    margin: 0;
}

.chat-close {
    background: none;
    border: none;
    color: var(--white);
    font-size: 1.5rem;
    cursor: pointer;
}

.chat-body {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.chat-messages {
    flex: 1;
    padding: var(--spacing-md);
    overflow-y: auto;
}

.message {
    margin-bottom: var(--spacing-md);
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
    max-width: 80%;
}

.message.service {
    background: var(--gray-100);
    margin-left: 0;
}

.chat-input {
    display: flex;
    padding: var(--spacing-md);
    border-top: 1px solid var(--gray-200);
}

.chat-input input {
    flex: 1;
    padding: var(--spacing-sm);
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-md);
    margin-right: var(--spacing-sm);
}

.chat-input button {
    background: var(--primary-color);
    color: var(--white);
    border: none;
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
    cursor: pointer;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
        position: fixed;
        top: 80px;
        left: 0;
        right: 0;
        background: var(--white);
        border-bottom: 1px solid var(--gray-200);
        box-shadow: var(--shadow-lg);
        padding: var(--spacing-md);
    }

    .nav-menu.active {
        display: block;
    }

    .nav-list {
        flex-direction: column;
        gap: var(--spacing-sm);
        align-items: flex-start;
    }

    .nav-link {
        display: block;
        padding: var(--spacing-sm) 0;
        width: 100%;
        border-bottom: 1px solid var(--gray-100);
        text-decoration: none !important;
    }

    .nav-link:last-child {
        border-bottom: none;
    }

    .nav-link:link,
    .nav-link:visited {
        text-decoration: none !important;
    }

    .nav-dropdown {
        width: 100%;
    }

    .nav-dropdown .dropdown-toggle {
        display: flex;
        justify-content: space-between;
        align-items: center;
        width: 100%;
        padding: var(--spacing-sm) 0;
    }

    .nav-dropdown .dropdown-toggle::after {
        content: '▼';
        transition: transform 0.3s ease;
    }

    .nav-dropdown.active .dropdown-toggle::after {
        transform: rotate(180deg);
    }

    /* 移动端下拉菜单样式已移至 mobile-dropdown.css 文件 */

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

    .nav-dropdown .dropdown-menu a {
        color: #000;
        padding: var(--spacing-sm) var(--spacing-lg);
        font-size: 0.875rem;
        text-decoration: none !important;
        display: block;
        width: 100%;
        font-weight: 500;
    }

    .nav-dropdown .dropdown-menu a:hover {
        color: var(--primary-color);
        background: transparent;
        text-decoration: none !important;
    }

    .nav-dropdown .dropdown-menu a:link,
    .nav-dropdown .dropdown-menu a:visited {
        text-decoration: none !important;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .title-en {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: var(--spacing-lg);
    }
    
    .pricing-content {
        grid-template-columns: 1fr;
    }
    
    .contact-content {
        display: flex;
        flex-direction: column;
        align-items: center;
    }

    .contact-info-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        padding: 0 1rem;
    }

    .info-card {
        padding: 2rem 1.5rem;
    }

    .info-icon i {
        font-size: 2rem;
        width: 70px;
        height: 70px;
    }
    
    .services-grid,
    .industries-grid,
    .cases-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-md);
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .title-en {
        font-size: 1.5rem;
    }
    
    .section-header h2 {
        font-size: 2rem;
    }
    
    .chat-panel {
        width: 100vw;
        height: 100vh;
        position: fixed;
        top: 0;
        left: 0;
        bottom: 0;
        right: 0;
        border-radius: 0;
    }
}

/* 服务页面banner */
.service-banner {
    position: relative;
    height: 260px;
    margin-top: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    text-align: center;
}

.banner-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    overflow: hidden;
}

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

.banner-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.8), rgba(59, 130, 246, 0.6));
}

.banner-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.banner-content h1 {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
    font-weight: 700;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.banner-content p {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-lg);
    opacity: 0.95;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

.banner-content .breadcrumb {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    font-size: 1rem;
    opacity: 0.9;
}

.banner-content .breadcrumb a {
    color: var(--white);
    text-decoration: none;
    transition: opacity 0.3s ease;
}

.banner-content .breadcrumb a:hover {
    opacity: 0.7;
}

/* 动画效果 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

/* 隐藏英文内容 */
body[data-lang="zh"] .title-en,
body[data-lang="zh"] .subtitle-en {
    display: none;
}

body[data-lang="en"] .title-cn,
body[data-lang="en"] .subtitle-cn {
    display: none;
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--gray-100);
}

::-webkit-scrollbar-thumb {
    background: var(--gray-400);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--gray-500);
}