/* 全局CSS变量 */
:root {
    /* 主色调 - 绿色渐变主题 */
    --primary-color: #00a65a;
    --primary-dark: #008d4c;
    --primary-light: #3dca91;
    --secondary-color: #00c0ef;
    --accent-color: #f39c12;
    
    /* 中性色 */
    --dark-color: #2c3e50;
    --medium-dark: #34495e;
    --medium-color: #7f8c8d;
    --light-color: #ecf0f1;
    --white-color: #ffffff;
    --gray-light: #f8f9fa;
    --gray-medium: #e9ecef;
    --gray-dark: #6c757d;
    
    /* 辅助色 */
    --success-color: #27ae60;
    --warning-color: #f39c12;
    --danger-color: #e74c3c;
    --info-color: #3498db;
    
    /* 字体 */
    --main-font: 'Microsoft YaHei', Arial, sans-serif;
    --heading-font: 'Microsoft YaHei', Arial, sans-serif;
    
    /* 间距 */
    --spacing-xs: 5px;
    --spacing-sm: 10px;
    --spacing-md: 20px;
    --spacing-lg: 30px;
    --spacing-xl: 50px;
    
    /* 圆角 */
    --border-radius-sm: 5px;
    --border-radius-md: 10px;
    --border-radius-lg: 15px;
    --border-radius-xl: 20px;
    --border-radius-round: 50%;
    
    /* 阴影 */
    --shadow-sm: 0 2px 5px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 5px 15px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.15);
    --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.2);
    
    /* 过渡 */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* 全局重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* 基础样式 */
body {
    font-family: var(--main-font);
    font-size: 16px;
    line-height: 1.6;
    color: var(--dark-color);
    background-color: var(--white-color);
    scroll-behavior: smooth;
    overflow-x: hidden;
}

/* 容器 */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* 标题样式 */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--heading-font);
    font-weight: 700;
    line-height: 1.2;
    color: var(--dark-color);
    margin-bottom: var(--spacing-md);
}

h1 {
    font-size: 2.5rem;
}

h2 {
    font-size: 2rem;
}

h3 {
    font-size: 1.5rem;
}

h4 {
    font-size: 1.25rem;
}

/* 段落样式 */
p {
    margin-bottom: var(--spacing-md);
    color: var(--medium-dark);
}

/* 列表样式 */
ul, ol {
    margin-bottom: var(--spacing-md);
    padding-left: var(--spacing-lg);
}

li {
    margin-bottom: var(--spacing-xs);
    color: var(--medium-dark);
}

/* 链接样式 */
a {
    color: var(--primary-color);
    text-decoration: none;
    transition: all var(--transition-normal);
}

a:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

/* 按钮样式 */
.btn-primary, .btn-secondary {
    display: inline-block;
    padding: 12px 30px;
    border: none;
    border-radius: var(--border-radius-md);
    font-size: 1rem;
    font-weight: 600;
    text-align: center;
    text-decoration: none;
    cursor: pointer;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-sm);
    font-family: var(--main-font);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: var(--white-color);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    text-decoration: none;
    color: var(--white-color);
}

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

.btn-secondary:hover {
    background-color: var(--primary-color);
    color: var(--white-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    text-decoration: none;
}

/* 顶部通知栏 */
.top-bar {
    background-color: var(--dark-color);
    color: var(--white-color);
    padding: var(--spacing-sm) 0;
    font-size: 0.9rem;
}

.top-bar-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.top-info {
    display: flex;
    gap: var(--spacing-lg);
    align-items: center;
}

.top-info span {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.top-social a {
    color: var(--white-color);
    margin-left: var(--spacing-md);
    font-size: 1.1rem;
}

.top-social a:hover {
    color: var(--primary-light);
}

/* 导航栏 */
.header {
    background-color: var(--white-color);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: all var(--transition-normal);
}

.header-scrolled {
    box-shadow: var(--shadow-md);
    padding: var(--spacing-sm) 0;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) 0;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.logo h1 {
    font-size: 1.8rem;
    font-weight: 700;
    margin: 0;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.logo h1 span {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* 导航链接 */
.nav {
    display: flex;
    align-items: center;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
    margin: 0;
    padding: 0;
}

.nav-links li a {
    display: block;
    padding: var(--spacing-sm) 0;
    color: var(--medium-dark);
    font-weight: 500;
    position: relative;
    text-decoration: none;
    transition: all var(--transition-normal);
}

.nav-links li a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-color), var(--primary-light));
    transition: width var(--transition-normal);
}

.nav-links li a:hover::after,
.nav-links li a.active::after {
    width: 100%;
}

.nav-links li a:hover,
.nav-links li a.active {
    color: var(--primary-color);
    text-decoration: none;
}

/* 移动端菜单按钮 */
.nav-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--medium-dark);
    cursor: pointer;
    padding: var(--spacing-xs);
    transition: all var(--transition-normal);
}

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

/* 英雄区 */
.hero {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: var(--white-color);
    padding: var(--spacing-xl) 0;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 1000"><defs><radialGradient id="a" cx="50%" cy="50%" r="50%" fx="50%" fy="50%"><stop offset="0%" stop-color="rgba(255,255,255,0.1)"/><stop offset="100%" stop-color="rgba(255,255,255,0)"/></radialGradient></defs><circle cx="200" cy="200" r="100" fill="url(%23a)" opacity=".3"/><circle cx="800" cy="300" r="150" fill="url(%23a)" opacity=".2"/><circle cx="400" cy="700" r="120" fill="url(%23a)" opacity=".4"/></svg>');
    background-size: cover;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-text {
    animation: fadeInLeft 1s ease-out;
}

.hero-tagline {
    display: inline-block;
    background-color: rgba(255, 255, 255, 0.2);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--border-radius-lg);
    font-size: 0.9rem;
    margin-bottom: var(--spacing-md);
    backdrop-filter: blur(10px);
}

.hero-title {
    font-size: 2.8rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
    color: var(--white-color);
}

.hero-desc {
    font-size: 1.1rem;
    margin-bottom: var(--spacing-lg);
    opacity: 0.9;
    color: var(--white-color);
}

.hero-stats {
    display: flex;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
}

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

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--white-color);
    line-height: 1;
}

.stat-label {
    font-size: 0.9rem;
    opacity: 0.8;
    color: var(--white-color);
    margin-top: var(--spacing-xs);
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.btn-hero-primary,
.btn-hero-secondary {
    padding: 15px 35px;
    font-size: 1.1rem;
    font-weight: 600;
    border-radius: var(--border-radius-lg);
    text-decoration: none;
    display: inline-block;
    transition: all var(--transition-normal);
}

.btn-hero-primary {
    background-color: var(--white-color);
    color: var(--primary-color);
    box-shadow: var(--shadow-md);
}

.btn-hero-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
    color: var(--primary-color);
    text-decoration: none;
}

.btn-hero-secondary {
    background-color: transparent;
    color: var(--white-color);
    border: 2px solid var(--white-color);
}

.btn-hero-secondary:hover {
    background-color: var(--white-color);
    color: var(--primary-color);
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
    text-decoration: none;
}

.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
    animation: fadeInRight 1s ease-out 0.3s both;
}

.visual-box {
    width: 350px;
    height: 350px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    backdrop-filter: blur(10px);
    position: relative;
    overflow: hidden;
    animation: pulse 2s ease-in-out infinite;
}

.visual-box::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.visual-box:hover::before {
    left: 100%;
}

.visual-inner {
    font-size: 150px;
    color: var(--white-color);
    position: relative;
    z-index: 1;
}

/* 服务特色 */
.features {
    padding: var(--spacing-xl) 0;
    background-color: var(--gray-light);
}

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

.section-title {
    font-size: 2.2rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: var(--border-radius-sm);
}

.section-desc {
    font-size: 1.1rem;
    color: var(--medium-color);
    max-width: 600px;
    margin: 0 auto;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

.feature-card {
    background-color: var(--white-color);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-xl);
    text-align: center;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-medium);
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-light);
}

.feature-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 0 auto var(--spacing-md);
    font-size: 1.8rem;
    color: var(--white-color);
    box-shadow: var(--shadow-sm);
}

.feature-title {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.feature-desc {
    color: var(--medium-color);
    font-size: 0.95rem;
}

/* 服务项目 */
.services {
    padding: var(--spacing-xl) 0;
    background-color: var(--white-color);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-lg);
}

.service-card {
    background-color: var(--white-color);
    border-radius: var(--border-radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
    border: 1px solid var(--gray-medium);
    display: flex;
    flex-direction: column;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-light);
}

.service-image {
    height: 200px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 4rem;
    color: var(--white-color);
}

.service-content {
    padding: var(--spacing-lg);
    flex: 1;
    display: flex;
    flex-direction: column;
}

.service-content h3 {
    margin-bottom: var(--spacing-md);
    color: var(--dark-color);
}

.service-content ul {
    margin-bottom: var(--spacing-lg);
    padding-left: var(--spacing-lg);
    flex: 1;
}

.service-content li {
    margin-bottom: var(--spacing-xs);
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-xs);
}

.service-content li i {
    color: var(--success-color);
    margin-top: 5px;
    flex-shrink: 0;
}

.service-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-weight: 600;
    color: var(--primary-color);
    transition: all var(--transition-normal);
}

.service-link:hover {
    transform: translateX(5px);
    text-decoration: none;
}

/* 试管三代技术 */
.technology {
    padding: var(--spacing-xl) 0;
    background-color: var(--gray-light);
}

.technology-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
}

.technology-text h2 {
    margin-bottom: var(--spacing-md);
    color: var(--dark-color);
}

.tech-features {
    margin: var(--spacing-lg) 0;
}

.tech-item {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    align-items: flex-start;
}

.tech-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-weight: 700;
    color: var(--white-color);
    flex-shrink: 0;
    box-shadow: var(--shadow-sm);
}

.tech-info h4 {
    margin-bottom: var(--spacing-xs);
    color: var(--dark-color);
}

.tech-info p {
    margin-bottom: 0;
    font-size: 0.95rem;
}

.technology-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.visual-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    width: 100%;
    max-width: 300px;
}

.visual-item {
    background: var(--white-color);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
    border: 1px solid var(--gray-medium);
}

.visual-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-light);
}

.visual-item i {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

.visual-item h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--dark-color);
}

/* 关于我们 */
.about {
    padding: var(--spacing-xl) 0;
    background-color: var(--white-color);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
}

.about-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.about-image {
    width: 300px;
    height: 300px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 100px;
    color: var(--white-color);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
    animation: rotate 20s linear infinite;
}

.about-text h2 {
    margin-bottom: var(--spacing-md);
    color: var(--dark-color);
}

.about-stats {
    display: flex;
    gap: var(--spacing-lg);
    margin: var(--spacing-lg) 0;
    flex-wrap: wrap;
}

.stat-box {
    background-color: var(--gray-light);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    text-align: center;
    flex: 1;
    min-width: 120px;
    border: 1px solid var(--gray-medium);
}

.stat-box .stat-number {
    font-size: 2rem;
    color: var(--primary-color);
    font-weight: 700;
    line-height: 1;
}

.stat-box .stat-label {
    font-size: 0.85rem;
    color: var(--medium-color);
    margin-top: var(--spacing-xs);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* 成功案例 */
.cases {
    padding: var(--spacing-xl) 0;
    background-color: var(--gray-light);
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.case-card {
    background-color: var(--white-color);
    border-radius: var(--border-radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
    border: 1px solid var(--gray-medium);
}

.case-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-light);
}

.case-image {
    height: 150px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 3rem;
    color: var(--white-color);
}

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

.case-content h3 {
    margin-bottom: var(--spacing-sm);
    color: var(--dark-color);
    font-size: 1.1rem;
}

.case-desc {
    font-size: 0.95rem;
    margin-bottom: var(--spacing-md);
    color: var(--medium-color);
}

.case-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.85rem;
    color: var(--gray-dark);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--gray-medium);
}

.case-meta span {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.case-meta i {
    color: var(--primary-color);
}

.cases-more {
    text-align: center;
    margin-top: var(--spacing-lg);
}

/* 服务流程 */
.process {
    padding: var(--spacing-xl) 0;
    background-color: var(--white-color);
}

.process-steps {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    position: relative;
    flex-wrap: wrap;
    justify-content: center;
}

.process-steps::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-color), var(--primary-light));
    transform: translateY(-50%);
    z-index: 1;
}

.step-item {
    background-color: var(--white-color);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-xl);
    box-shadow: var(--shadow-sm);
    text-align: center;
    max-width: 200px;
    position: relative;
    z-index: 2;
    border: 2px solid var(--white-color);
    transition: all var(--transition-normal);
}

.step-item:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-light);
}

.step-number {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--white-color);
    margin: 0 auto var(--spacing-md);
    box-shadow: var(--shadow-sm);
}

.step-content h3 {
    margin-bottom: var(--spacing-xs);
    color: var(--dark-color);
    font-size: 1.1rem;
}

.step-content p {
    font-size: 0.85rem;
    color: var(--medium-color);
    margin-bottom: 0;
}

.step-line {
    flex: 1;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-color), var(--primary-light));
    min-width: 50px;
    position: relative;
    z-index: 1;
}

/* 客户评价 */
.testimonials {
    padding: var(--spacing-xl) 0;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: var(--white-color);
    position: relative;
    overflow: hidden;
}

.testimonials::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 1000"><defs><radialGradient id="a" cx="50%" cy="50%" r="50%" fx="50%" fy="50%"><stop offset="0%" stop-color="rgba(255,255,255,0.1)"/><stop offset="100%" stop-color="rgba(255,255,255,0)"/></radialGradient></defs><circle cx="200" cy="200" r="150" fill="url(%23a)" opacity=".2"/><circle cx="800" cy="300" r="200" fill="url(%23a)" opacity=".1"/><circle cx="400" cy="700" r="180" fill="url(%23a)" opacity=".3"/></svg>');
    background-size: cover;
}

.testimonials .section-title {
    color: var(--white-color);
}

.testimonials .section-desc {
    color: rgba(255, 255, 255, 0.9);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    position: relative;
    z-index: 1;
}

.testimonial-card {
    background-color: rgba(255, 255, 255, 0.1);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-xl);
    backdrop-filter: blur(10px);
    transition: all var(--transition-normal);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.testimonial-card:hover {
    transform: translateY(-10px);
    background-color: rgba(255, 255, 255, 0.15);
}

.testimonial-content {
    margin-bottom: var(--spacing-md);
    font-style: italic;
    color: var(--white-color);
    position: relative;
}

.testimonial-content::before {
    content: '"';
    font-size: 3rem;
    position: absolute;
    top: -20px;
    left: -10px;
    color: rgba(255, 255, 255, 0.3);
}

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

.author-info h4 {
    margin-bottom: 0;
    color: var(--white-color);
    font-size: 1rem;
}

.author-info span {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.8);
}

/* 联系我们 */
.contact {
    padding: var(--spacing-xl) 0;
    background-color: var(--white-color);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
}

.contact-info h2 {
    margin-bottom: var(--spacing-md);
    color: var(--dark-color);
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

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

.contact-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: var(--border-radius-lg);
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.5rem;
    color: var(--white-color);
    flex-shrink: 0;
    box-shadow: var(--shadow-sm);
}

.contact-text h4 {
    margin-bottom: var(--spacing-xs);
    color: var(--dark-color);
    font-size: 1rem;
}

.contact-text p {
    margin-bottom: 0;
    color: var(--medium-color);
    font-size: 0.95rem;
}

.contact-form {
    background-color: var(--white-color);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-xl);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--gray-medium);
}

.contact-form h3 {
    margin-bottom: var(--spacing-lg);
    color: var(--dark-color);
    text-align: center;
}

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

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 600;
    color: var(--dark-color);
    font-size: 0.95rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px var(--spacing-md);
    border: 2px solid var(--gray-medium);
    border-radius: var(--border-radius-md);
    font-size: 0.95rem;
    font-family: var(--main-font);
    transition: all var(--transition-normal);
    background-color: var(--white-color);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 166, 90, 0.1);
}

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

.contact-form .btn-primary {
    width: 100%;
    padding: 15px;
    font-size: 1.1rem;
    margin-top: var(--spacing-md);
}

/* 页脚 */
.footer {
    background-color: var(--dark-color);
    color: var(--white-color);
    padding: var(--spacing-xl) 0 var(--spacing-md);
}

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

.footer-about h3 {
    margin-bottom: var(--spacing-md);
    color: var(--white-color);
}

.footer-about p {
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: var(--spacing-lg);
}

.footer-social a {
    color: rgba(255, 255, 255, 0.8);
    margin-right: var(--spacing-md);
    font-size: 1.2rem;
    transition: all var(--transition-normal);
}

.footer-social a:hover {
    color: var(--primary-light);
}

.footer-links h4,
.footer-services h4,
.footer-contact h4 {
    margin-bottom: var(--spacing-lg);
    color: var(--white-color);
    font-size: 1.1rem;
    position: relative;
    padding-bottom: var(--spacing-xs);
}

.footer-links h4::after,
.footer-services h4::after,
.footer-contact h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 50px;
    height: 2px;
    background-color: var(--primary-color);
}

.footer-links ul,
.footer-services ul,
.footer-contact ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-links li,
.footer-services li,
.footer-contact li {
    margin-bottom: var(--spacing-md);
    color: rgba(255, 255, 255, 0.8);
}

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: all var(--transition-normal);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.footer-links a:hover {
    color: var(--primary-light);
    transform: translateX(5px);
    text-decoration: none;
}

.footer-contact li {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.footer-contact li i {
    color: var(--primary-color);
    flex-shrink: 0;
    width: 20px;
    text-align: center;
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.6);
}

.footer-bottom a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
}

.footer-bottom a:hover {
    color: var(--primary-light);
}

/* 返回顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: var(--white-color);
    border: none;
    border-radius: 50%;
    font-size: 1.2rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-md);
    z-index: 999;
    display: flex;
    justify-content: center;
    align-items: center;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

/* 动画 */
@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

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

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

@keyframes rotate {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

/* 响应式设计 */
@media (max-width: 992px) {
    .hero-content,
    .technology-content,
    .about-content,
    .contact-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .hero-title {
        font-size: 2.2rem;
    }
    
    .visual-box {
        width: 300px;
        height: 300px;
    }
    
    .visual-inner {
        font-size: 120px;
    }
    
    .services-grid {
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    }
    
    .process-steps {
        flex-direction: column;
    }
    
    .step-line {
        width: 2px;
        height: 50px;
        min-width: auto;
    }
}

@media (max-width: 768px) {
    .top-bar-content {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-sm);
    }
    
    .top-info {
        gap: var(--spacing-md);
    }
    
    .header-content {
        flex-direction: column;
        align-items: stretch;
    }
    
    .nav-toggle {
        display: block;
        align-self: flex-end;
    }
    
    .nav {
        display: none;
        order: 3;
    }
    
    .nav.active {
        display: block;
    }
    
    .nav-links {
        flex-direction: column;
        gap: var(--spacing-sm);
        margin-top: var(--spacing-md);
    }
    
    .nav-links li a {
        padding: var(--spacing-sm) 0;
        text-align: center;
    }
    
    .hero-title {
        font-size: 1.8rem;
    }
    
    .hero-stats {
        gap: var(--spacing-md);
    }
    
    .stat-number {
        font-size: 2rem;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .visual-box {
        width: 250px;
        height: 250px;
    }
    
    .visual-inner {
        font-size: 100px;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .cases-grid {
        grid-template-columns: 1fr;
    }
    
    .testimonials-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-form {
        padding: var(--spacing-lg);
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 45px;
        height: 45px;
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    .top-info {
        flex-direction: column;
        gap: var(--spacing-xs);
    }
    
    .hero-title {
        font-size: 1.5rem;
    }
    
    .hero-desc {
        font-size: 1rem;
    }
    
    .hero-stats {
        flex-direction: column;
        align-items: center;
    }
    
    .visual-box {
        width: 200px;
        height: 200px;
    }
    
    .visual-inner {
        font-size: 80px;
    }
    
    .section-title {
        font-size: 1.5rem;
    }
    
    .contact-content {
        gap: var(--spacing-lg);
    }
    
    .contact-info h2 {
        font-size: 1.5rem;
    }
    
    .contact-form {
        padding: var(--spacing-md);
    }
    
    .contact-details {
        gap: var(--spacing-md);
    }
    
    .contact-item {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-xs);
    }
}

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

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

::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, var(--primary-color), var(--primary-dark));
    border-radius: var(--border-radius-sm);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-dark);
}