/* CSS变量 - 现代化色彩方案、字体、间距 */
:root {
    /* 品牌色彩方案 */
    --color-primary: #0069FF;
    --color-primary-dark: #0052CC;
    --color-primary-light: #3385FF;
    --color-accent: #5F5D5D;
    --color-accent-light: #7A7878;
    --color-background-white: #ffffff;
    --color-background-light: #f8fafc;
    --color-background-gray: #f1f5f9;
    --color-text-dark: #1a1a1a;
    --color-text-medium: #5F5D5D;
    --color-text-light: #94a3b8;
    --color-success: #10b981;
    --color-warning: #f59e0b;
    
    /* 字体 */
    --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", "PingFang SC", sans-serif;
    --font-size-base: 1rem;
    --font-size-h1: 3rem;
    --font-size-h2: 2.25rem;
    --font-size-h3: 1.5rem;
    
    /* 间距 */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;
    
    /* 容器 */
    --container-max-width: 1200px;
    --container-padding: 2rem;
    
    /* 圆角 */
    --border-radius-sm: 12px;
    --border-radius-md: 16px;
    --border-radius-lg: 24px;
    
    /* 阴影 - 更柔和的现代阴影 */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08), 0 1px 2px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.08), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    /* 过渡 */
    --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.7;
    color: var(--color-text-dark);
    background-color: var(--color-background-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* 容器 */
.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

/* 导航栏样式 - 现代玻璃态效果 */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
    z-index: 1000;
    transition: all var(--transition-base);
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.25rem var(--container-padding);
}

.logo {
    display: flex;
    align-items: center;
    height: 50px;
}

.logo-image {
    height: 100%;
    width: auto;
    max-width: 350px;
    object-fit: contain;
}

/* 汉堡菜单按钮 - 默认隐藏 */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--color-primary);
    padding: var(--spacing-xs);
    min-width: 44px;
    min-height: 44px;
}

/* 导航链接 - 桌面端水平布局 */
.nav {
    display: flex;
    gap: 0.5rem;
}

.nav a {
    text-decoration: none;
    color: var(--color-text-dark);
    font-weight: 500;
    transition: all var(--transition-base);
    padding: 0.625rem 1.25rem;
    border-radius: var(--border-radius-sm);
    position: relative;
}

.nav a:hover {
    color: var(--color-primary);
    background-color: rgba(59, 130, 246, 0.08);
}

.nav a::after {
    content: '';
    position: absolute;
    bottom: 0.5rem;
    left: 50%;
    transform: translateX(-50%) scaleX(0);
    width: 60%;
    height: 2px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
    border-radius: 2px;
    transition: transform var(--transition-base);
}

.nav a:hover::after {
    transform: translateX(-50%) scaleX(1);
}

/* 响应式设计 - 移动端 */
@media (max-width: 768px) {
    .menu-toggle {
        display: block;
    }

    .logo {
        height: 38px;
    }

    .logo-image {
        max-width: 240px;
    }

    .nav {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: var(--color-background-white);
        flex-direction: column;
        gap: 0;
        padding: var(--spacing-sm) 0;
        box-shadow: var(--shadow-md);
        display: none;
    }

    .nav.active {
        display: flex;
    }

    .nav a {
        padding: var(--spacing-sm) var(--container-padding);
        border-bottom: 1px solid #f3f4f6;
        min-height: 48px;
        display: flex;
        align-items: center;
    }

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

/* 为固定导航栏添加顶部间距 */
main {
    margin-top: 70px;
}

/* 首页横幅区域样式 - 品牌渐变背景 + SVG动画 */
.hero {
    background: linear-gradient(135deg, #0069FF 0%, #0052CC 50%, #003D99 100%);
    background-size: 200% 200%;
    animation: gradientShift 15s ease infinite;
    color: var(--color-background-white);
    padding: 8rem var(--container-padding) 6rem;
    text-align: center;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E"),
        radial-gradient(circle at 20% 50%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(255, 255, 255, 0.1) 0%, transparent 50%);
    animation: heroPattern 20s linear infinite;
    pointer-events: none;
}

@keyframes heroPattern {
    0% { background-position: 0 0, 0 0, 0 0; }
    100% { background-position: 60px 60px, 0 0, 0 0; }
}

@keyframes gradientShift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.hero .container {
    max-width: 900px;
    position: relative;
    z-index: 1;
}

.hero h1 {
    font-size: var(--font-size-h1);
    font-weight: 800;
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
    letter-spacing: -0.02em;
    text-shadow: 0 2px 20px rgba(0, 0, 0, 0.15);
}

.hero .subtitle {
    font-size: 1.35rem;
    margin-bottom: var(--spacing-lg);
    opacity: 0.95;
    font-weight: 400;
    letter-spacing: 0.01em;
}

.hero .phone {
    font-size: 1.75rem;
    margin-bottom: 2.5rem;
    font-weight: 600;
    letter-spacing: 0.02em;
}

.hero .phone a {
    color: var(--color-background-white);
    text-decoration: none;
    border-bottom: 2px solid rgba(255, 255, 255, 0.4);
    transition: all var(--transition-base);
    padding-bottom: 0.25rem;
}

.hero .phone a:hover {
    border-color: var(--color-background-white);
    padding-bottom: 0.375rem;
}

.cta-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-background-white);
    color: var(--color-primary);
    padding: 1rem 2.75rem;
    font-size: 1.125rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: 50px;
    transition: all var(--transition-base);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15), 0 0 0 0 rgba(255, 255, 255, 0.5);
    min-height: 52px;
    position: relative;
    overflow: hidden;
}

.cta-button::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(59, 130, 246, 0.1);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.cta-button:hover::before {
    width: 300px;
    height: 300px;
}

.cta-button:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2), 0 0 0 4px rgba(255, 255, 255, 0.3);
}

/* 响应式设计 - 移动端横幅 */
@media (max-width: 768px) {
    .hero {
        padding: var(--spacing-2xl) var(--container-padding);
        min-height: 400px;
    }

    .hero .subtitle {
        font-size: 1rem;
    }

    .hero .phone {
        font-size: 1.25rem;
    }

    .cta-button {
        padding: 0.875rem var(--spacing-lg);
        font-size: 1rem;
    }
}

/* 核心业务展示区域样式 - 现代卡片设计 + SVG背景 */
.services {
    padding: 5rem var(--container-padding);
    background: linear-gradient(180deg, var(--color-background-white) 0%, var(--color-background-light) 100%);
    position: relative;
}

.services::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: url("data:image/svg+xml,%3Csvg width='100' height='100' viewBox='0 0 100 100' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M11 18c3.866 0 7-3.134 7-7s-3.134-7-7-7-7 3.134-7 7 3.134 7 7 7zm48 25c3.866 0 7-3.134 7-7s-3.134-7-7-7-7 3.134-7 7 3.134 7 7 7zm-43-7c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zm63 31c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zM34 90c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zm56-76c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zM12 86c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm28-65c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm23-11c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm-6 60c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm29 22c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zM32 63c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm57-13c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm-9-21c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM60 91c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM35 41c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2z' fill='%230069FF' fill-opacity='0.03' fill-rule='evenodd'/%3E%3C/svg%3E");
    opacity: 0.6;
    pointer-events: none;
    animation: servicesPattern 30s linear infinite;
}

@keyframes servicesPattern {
    0% { background-position: 0 0; }
    100% { background-position: 100px 100px; }
}

.services h2 {
    font-size: var(--font-size-h2);
    text-align: center;
    margin-bottom: 1rem;
    color: var(--color-text-dark);
    font-weight: 700;
    letter-spacing: -0.02em;
}

.services h2::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
    margin: 1.5rem auto 3rem;
    border-radius: 2px;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.service-card {
    background-color: var(--color-background-white);
    padding: 0;
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
    border: 1px solid rgba(0, 0, 0, 0.05);
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-base);
    z-index: 2;
}

.service-card:hover::before {
    transform: scaleX(1);
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: rgba(0, 105, 255, 0.2);
}

.service-illustration {
    height: 140px;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    position: relative;
    overflow: hidden;
}

.service-illustration::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 30px;
    background: linear-gradient(to bottom, transparent, var(--color-background-white));
}

/* 劳务派遣 - 建筑工人/工厂场景 */
.service-card[data-service="dispatch"] .service-illustration {
    background-image: 
        linear-gradient(to bottom, rgba(0, 105, 255, 0.7), rgba(0, 105, 255, 0.9)),
        url('https://images.pexels.com/photos/585419/pexels-photo-585419.jpeg?auto=compress&cs=tinysrgb&w=800');
    background-size: cover;
    background-position: center;
}

/* 人事外包 - 办公文档/团队协作 */
.service-card[data-service="outsourcing"] .service-illustration {
    background-image: 
        linear-gradient(to bottom, rgba(95, 93, 93, 0.7), rgba(95, 93, 93, 0.9)),
        url('https://images.pexels.com/photos/3184292/pexels-photo-3184292.jpeg?auto=compress&cs=tinysrgb&w=800');
    background-size: cover;
    background-position: center;
}

/* 人才招聘 - 面试/握手场景 */
.service-card[data-service="recruitment"] .service-illustration {
    background-image: 
        linear-gradient(to bottom, rgba(0, 105, 255, 0.7), rgba(0, 82, 204, 0.9)),
        url('https://images.pexels.com/photos/3184465/pexels-photo-3184465.jpeg?auto=compress&cs=tinysrgb&w=800');
    background-size: cover;
    background-position: center;
}

/* 职业培训 - 培训/学习场景 */
.service-card[data-service="training"] .service-illustration {
    background-image: 
        linear-gradient(to bottom, rgba(51, 133, 255, 0.7), rgba(0, 105, 255, 0.9)),
        url('https://images.pexels.com/photos/3184360/pexels-photo-3184360.jpeg?auto=compress&cs=tinysrgb&w=800');
    background-size: cover;
    background-position: center;
}

/* 企业咨询 - 商务会议/数据分析 */
.service-card[data-service="consulting"] .service-illustration {
    background-image: 
        linear-gradient(to bottom, rgba(95, 93, 93, 0.7), rgba(0, 105, 255, 0.9)),
        url('https://images.pexels.com/photos/3184639/pexels-photo-3184639.jpeg?auto=compress&cs=tinysrgb&w=800');
    background-size: cover;
    background-position: center;
}

.service-content {
    padding: 2rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.service-card h3 {
    font-size: var(--font-size-h3);
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-sm);
    font-weight: 700;
}

.service-card p {
    color: var(--color-text-medium);
    line-height: 1.8;
    font-size: 0.975rem;
    flex: 1;
}

/* 响应式设计 - 平板端 (768px - 1024px) */
@media (max-width: 1024px) and (min-width: 769px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .advantages-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* 响应式设计 - 移动端 */
@media (max-width: 768px) {
    :root {
        --font-size-h1: 1.75rem;
        --font-size-h2: 1.75rem;
        --font-size-h3: 1.25rem;
        --container-padding: 1.5rem;
    }

    .services {
        padding: var(--spacing-xl) var(--container-padding);
    }

    .services h2 {
        margin-bottom: var(--spacing-lg);
    }

    .services-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }

    .service-card {
        padding: var(--spacing-md);
    }
}

/* 服务优势展示区域样式 - 现代图标卡片 + SVG背景 */
.advantages {
    padding: 5rem var(--container-padding);
    background: var(--color-background-white);
    position: relative;
}

.advantages::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: url("data:image/svg+xml,%3Csvg width='80' height='80' viewBox='0 0 80 80' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%230069FF' fill-opacity='0.04'%3E%3Cpath d='M50 50c0-5.523 4.477-10 10-10s10 4.477 10 10-4.477 10-10 10c0 5.523-4.477 10-10 10s-10-4.477-10-10 4.477-10 10-10zM10 10c0-5.523 4.477-10 10-10s10 4.477 10 10-4.477 10-10 10c0 5.523-4.477 10-10 10S0 25.523 0 20s4.477-10 10-10zm10 8c4.418 0 8-3.582 8-8s-3.582-8-8-8-8 3.582-8 8 3.582 8 8 8zm40 40c4.418 0 8-3.582 8-8s-3.582-8-8-8-8 3.582-8 8 3.582 8 8 8z' /%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    animation: advantagesPattern 25s linear infinite;
    pointer-events: none;
}

@keyframes advantagesPattern {
    0% { background-position: 0 0; }
    100% { background-position: -80px -80px; }
}

.advantages h2 {
    font-size: var(--font-size-h2);
    text-align: center;
    margin-bottom: 1rem;
    color: var(--color-text-dark);
    font-weight: 700;
    letter-spacing: -0.02em;
}

.advantages h2::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
    margin: 1.5rem auto 3rem;
    border-radius: 2px;
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

.advantage-card {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.05) 0%, rgba(139, 92, 246, 0.05) 100%);
    padding: 2.5rem 1.75rem;
    border-radius: var(--border-radius-md);
    text-align: center;
    transition: all var(--transition-base);
    border: 2px solid transparent;
    position: relative;
    overflow: hidden;
}

.advantage-card::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.1) 0%, transparent 70%);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.advantage-card:hover::before {
    opacity: 1;
}

.advantage-card:hover {
    background: var(--color-background-white);
    border-color: var(--color-primary);
    transform: translateY(-8px) scale(1.02);
    box-shadow: var(--shadow-xl);
}

.advantage-card .icon {
    font-size: 3.5rem;
    margin-bottom: 1.25rem;
    display: block;
    filter: grayscale(0.2);
    transition: all var(--transition-base);
}

.advantage-card:hover .icon {
    transform: scale(1.1) rotateY(360deg);
    filter: grayscale(0);
}

.advantage-card h3 {
    font-size: 1.25rem;
    color: var(--color-text-dark);
    margin-bottom: var(--spacing-sm);
    font-weight: 700;
}

.advantage-card p {
    color: var(--color-text-medium);
    line-height: 1.8;
    font-size: 0.95rem;
}



/* 响应式设计 - 移动端 */
@media (max-width: 768px) {
    .advantages {
        padding: var(--spacing-xl) var(--container-padding);
    }

    .advantages-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }

    .advantage-card {
        padding: var(--spacing-md);
    }

    .advantage-card .icon {
        font-size: 2.5rem;
    }

    .advantage-card h3 {
        font-size: 1.125rem;
    }
}
/* 关于我们区域样式 - 现代内容布局 + SVG背景 */
.about {
    padding: 5rem var(--container-padding);
    background: linear-gradient(180deg, var(--color-background-light) 0%, var(--color-background-white) 100%);
    position: relative;
}

.about::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: url("data:image/svg+xml,%3Csvg width='120' height='120' viewBox='0 0 120 120' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M9 0h2v20H9V0zm25.134.84l1.732 1-10 17.32-1.732-1 10-17.32zm-20 20l1.732 1-10 17.32-1.732-1 10-17.32zM58.16 4.134l1 1.732-17.32 10-1-1.732 17.32-10zm-40 40l1 1.732-17.32 10-1-1.732 17.32-10zM80 9v2H60V9h20zM20 69v2H0v-2h20zm79.32-55l-1 1.732-17.32-10L82 4l17.32 10zm-80 80l-1 1.732-17.32-10L2 84l17.32 10zm96.546-75.84l-1.732 1-10-17.32 1.732-1 10 17.32zm-100 100l-1.732 1-10-17.32 1.732-1 10 17.32zM38.16 24.134l1 1.732-17.32 10-1-1.732 17.32-10zM60 29v2H40v-2h20zm19.32 5l-1 1.732-17.32-10L62 24l17.32 10zm16.546 4.16l-1.732 1-10-17.32 1.732-1 10 17.32zM111 40h-2V20h2v20zm3.134.84l1.732 1-10 17.32-1.732-1 10-17.32zM40 49v2H20v-2h20zm19.32 5l-1 1.732-17.32-10L42 44l17.32 10zm16.546 4.16l-1.732 1-10-17.32 1.732-1 10 17.32zM91 60h-2V40h2v20zm3.134.84l1.732 1-10 17.32-1.732-1 10-17.32zm24.026 3.294l1 1.732-17.32 10-1-1.732 17.32-10zM39.32 74l-1 1.732-17.32-10L22 64l17.32 10zm16.546 4.16l-1.732 1-10-17.32 1.732-1 10 17.32zM71 80h-2V60h2v20zm3.134.84l1.732 1-10 17.32-1.732-1 10-17.32zm24.026 3.294l1 1.732-17.32 10-1-1.732 17.32-10zM120 89v2h-20v-2h20zm-84.134 9.16l-1.732 1-10-17.32 1.732-1 10 17.32zM51 100h-2V80h2v20zm3.134.84l1.732 1-10 17.32-1.732-1 10-17.32zm24.026 3.294l1 1.732-17.32 10-1-1.732 17.32-10zM100 109v2H80v-2h20zm19.32 5l-1 1.732-17.32-10 1-1.732 17.32 10zM31 120h-2v-20h2v20z' fill='%235F5D5D' fill-opacity='0.03' fill-rule='evenodd'/%3E%3C/svg%3E");
    animation: aboutPattern 40s linear infinite;
    pointer-events: none;
}

@keyframes aboutPattern {
    0% { background-position: 0 0; }
    100% { background-position: 120px 120px; }
}

.about h2 {
    font-size: var(--font-size-h2);
    text-align: center;
    margin-bottom: 1rem;
    color: var(--color-text-dark);
    font-weight: 700;
    letter-spacing: -0.02em;
}

.about h2::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
    margin: 1.5rem auto 3rem;
    border-radius: 2px;
}

.about-content {
    max-width: 900px;
    margin: 0 auto;
    background: var(--color-background-white);
    padding: 3rem;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
}

.about-content > p {
    font-size: 1.125rem;
    line-height: 1.9;
    color: var(--color-text-dark);
    margin-bottom: 2.5rem;
}

.about-content h3 {
    font-size: var(--font-size-h3);
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-top: 2.5rem;
    margin-bottom: 1.5rem;
    font-weight: 700;
}

.about-content ul {
    list-style: none;
    padding-left: 0;
    margin-bottom: var(--spacing-lg);
    display: grid;
    gap: 0.75rem;
}

.about-content ul li {
    padding: 1rem 1.25rem;
    padding-left: 3rem;
    position: relative;
    color: var(--color-text-medium);
    font-size: 1.05rem;
    line-height: 1.6;
    background: var(--color-background-light);
    border-radius: var(--border-radius-sm);
    transition: all var(--transition-base);
}

.about-content ul li:hover {
    background: rgba(59, 130, 246, 0.08);
    transform: translateX(8px);
}

.about-content ul li::before {
    content: "✓";
    position: absolute;
    left: 1.25rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-primary);
    font-weight: bold;
    font-size: 1.3rem;
}

.about-content strong {
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 700;
}

/* 响应式设计 - 移动端 */
@media (max-width: 768px) {
    .about {
        padding: var(--spacing-xl) var(--container-padding);
    }

    .about-content {
        padding: 2rem 1.5rem;
    }

    .about-content > p {
        font-size: 1rem;
        margin-bottom: var(--spacing-lg);
    }

    .about-content h3 {
        margin-top: var(--spacing-lg);
        margin-bottom: var(--spacing-sm);
    }

    .about-content ul li {
        font-size: 0.95rem;
        padding: 0.875rem 1rem;
        padding-left: 2.75rem;
    }

    .about-content ul li::before {
        left: 1rem;
        font-size: 1.2rem;
    }
}

/* 联系我们区域样式 - 现代联系卡片 + SVG背景 */
.contact {
    padding: 5rem var(--container-padding);
    background: linear-gradient(135deg, var(--color-background-light) 0%, var(--color-background-white) 100%);
    position: relative;
}

.contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: url("data:image/svg+xml,%3Csvg width='64' height='64' viewBox='0 0 64 64' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M8 16c4.418 0 8-3.582 8-8s-3.582-8-8-8-8 3.582-8 8 3.582 8 8 8zm0-2c3.314 0 6-2.686 6-6s-2.686-6-6-6-6 2.686-6 6 2.686 6 6 6zm33.414-6l5.95-5.95L45.95.636 40 6.586 34.05.636 32.636 2.05 38.586 8l-5.95 5.95 1.414 1.414L40 9.414l5.95 5.95 1.414-1.414L41.414 8zM40 48c4.418 0 8-3.582 8-8s-3.582-8-8-8-8 3.582-8 8 3.582 8 8 8zm0-2c3.314 0 6-2.686 6-6s-2.686-6-6-6-6 2.686-6 6 2.686 6 6 6zM9.414 40l5.95-5.95-1.414-1.414L8 38.586l-5.95-5.95L.636 34.05 6.586 40l-5.95 5.95 1.414 1.414L8 41.414l5.95 5.95 1.414-1.414L9.414 40z' fill='%230069FF' fill-opacity='0.04' fill-rule='evenodd'/%3E%3C/svg%3E");
    animation: contactPattern 35s linear infinite;
    pointer-events: none;
}

@keyframes contactPattern {
    0% { background-position: 0 0; }
    100% { background-position: 64px 64px; }
}

.contact h2 {
    font-size: var(--font-size-h2);
    text-align: center;
    margin-bottom: 1rem;
    color: var(--color-text-dark);
    font-weight: 700;
    letter-spacing: -0.02em;
}

.contact h2::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
    margin: 1.5rem auto 3rem;
    border-radius: 2px;
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 3rem;
    max-width: 1000px;
    margin: 0 auto;
    align-items: start;
}

.contact-info {
    flex: 1;
}

.contact-item {
    padding: 1.75rem 2rem;
    margin-bottom: 1.5rem;
    background: var(--color-background-white);
    border-radius: var(--border-radius-md);
    font-size: 1.125rem;
    line-height: 1.8;
    border-left: 5px solid transparent;
    background-image: linear-gradient(var(--color-background-white), var(--color-background-white)),
                      linear-gradient(135deg, var(--color-primary), var(--color-accent));
    background-origin: border-box;
    background-clip: padding-box, border-box;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
}

.contact-item:hover {
    transform: translateX(8px);
    box-shadow: var(--shadow-lg);
}

/* 微信二维码样式 */
.contact-qrcode {
    display: flex;
    justify-content: center;
    align-items: flex-start;
}

.qrcode-card {
    background: var(--color-background-white);
    padding: 2rem;
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-md);
    text-align: center;
    transition: all var(--transition-base);
    border: 2px solid transparent;
}

.qrcode-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--color-primary);
}

.qrcode-image {
    width: 200px;
    height: 200px;
    border-radius: var(--border-radius-sm);
    margin-bottom: 1rem;
    display: block;
}

.qrcode-label {
    font-size: 1rem;
    color: var(--color-text-medium);
    font-weight: 600;
    margin: 0;
}

.contact-item strong {
    color: var(--color-text-dark);
    font-weight: 700;
    display: inline-block;
    min-width: 80px;
}

.contact-item a {
    color: var(--color-primary);
    text-decoration: none;
    transition: all var(--transition-base);
    min-height: 44px;
    display: inline-block;
    font-weight: 600;
    position: relative;
}

.contact-item a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
    transition: width var(--transition-base);
}

.contact-item a:hover::after {
    width: 100%;
}

.contact-item a:hover {
    color: var(--color-accent);
}

/* 响应式设计 - 移动端 */
@media (max-width: 768px) {
    .contact {
        padding: var(--spacing-xl) var(--container-padding);
    }

    .contact-wrapper {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .contact-item {
        padding: 1.25rem;
        font-size: 1rem;
        margin-bottom: 1.25rem;
    }

    .qrcode-card {
        padding: 1.5rem;
    }

    .qrcode-image {
        width: 180px;
        height: 180px;
    }
}

/* 页脚样式 - 现代渐变背景 */
.footer {
    background: linear-gradient(135deg, #1e293b 0%, #334155 100%);
    color: var(--color-background-white);
    padding: 2rem var(--spacing-lg);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent), var(--color-primary));
}

.footer p {
    margin: 0;
    font-size: 0.95rem;
    opacity: 0.85;
    letter-spacing: 0.02em;
}

/* 响应式设计 - 移动端 */
@media (max-width: 768px) {
    .footer {
        padding: var(--spacing-md);
    }

    .footer p {
        font-size: 0.875rem;
    }
}

/* 移动端额外优化 */
@media (max-width: 768px) {
    /* 确保所有可点击元素有足够的触摸目标 */
    button,
    a {
        min-height: 44px;
        min-width: 44px;
    }
    
    /* 优化文本可读性 */
    body {
        -webkit-text-size-adjust: 100%;
        text-size-adjust: 100%;
    }
    
    /* 防止横向滚动 */
    body {
        overflow-x: hidden;
    }
    
    /* 优化表单和输入元素 */
    input,
    textarea,
    select {
        font-size: 16px; /* 防止iOS自动缩放 */
    }
}

/* 平板端优化 (768px - 1024px) */
@media (min-width: 769px) and (max-width: 1024px) {
    .container {
        padding: 0 var(--spacing-lg);
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero .subtitle {
        font-size: 1.125rem;
    }
}

/* 触摸设备优化 */
@media (hover: none) and (pointer: coarse) {
    /* 移除悬停效果，使用更明显的点击反馈 */
    .service-card:active,
    .advantage-card:active {
        transform: scale(0.98);
    }
    
    .cta-button:active {
        transform: translateY(0);
    }
    
    .nav a:active {
        background-color: var(--color-background-light);
    }
}

/* 高对比度模式支持 */
@media (prefers-contrast: high) {
    .service-card,
    .advantage-card,
    .contact-item {
        border: 2px solid var(--color-text-dark);
    }
}

/* 渐入动画效果 */
.fade-in-section {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.fade-in-section.is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* 业务卡片图标样式 */
.service-icon {
    font-size: 3.5rem;
    margin-bottom: 1.25rem;
    display: block;
    text-align: center;
    filter: grayscale(0.3);
    transition: all var(--transition-base);
}

.service-card:hover .service-icon {
    filter: grayscale(0);
    transform: scale(1.15) rotateY(360deg);
}

/* 卡片渐入动画 - 错开效果 */
.services-grid .service-card,
.advantages-grid .advantage-card {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in-section.is-visible .service-card,
.fade-in-section.is-visible .advantage-card {
    opacity: 1;
    transform: translateY(0);
}

.fade-in-section.is-visible .service-card:nth-child(1),
.fade-in-section.is-visible .advantage-card:nth-child(1) {
    transition-delay: 0.1s;
}

.fade-in-section.is-visible .service-card:nth-child(2),
.fade-in-section.is-visible .advantage-card:nth-child(2) {
    transition-delay: 0.2s;
}

.fade-in-section.is-visible .service-card:nth-child(3),
.fade-in-section.is-visible .advantage-card:nth-child(3) {
    transition-delay: 0.3s;
}

.fade-in-section.is-visible .service-card:nth-child(4),
.fade-in-section.is-visible .advantage-card:nth-child(4) {
    transition-delay: 0.4s;
}

.fade-in-section.is-visible .service-card:nth-child(5) {
    transition-delay: 0.5s;
}

/* 联系卡片渐入动画 */
.contact-info .contact-item {
    opacity: 0;
    transform: translateX(-30px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in-section.is-visible .contact-item {
    opacity: 1;
    transform: translateX(0);
}

.fade-in-section.is-visible .contact-item:nth-child(1) {
    transition-delay: 0.1s;
}

.fade-in-section.is-visible .contact-item:nth-child(2) {
    transition-delay: 0.2s;
}

.fade-in-section.is-visible .contact-item:nth-child(3) {
    transition-delay: 0.3s;
}

/* 关于我们内容渐入 */
.about-content {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease-out 0.2s, transform 0.8s ease-out 0.2s;
}

.fade-in-section.is-visible .about-content {
    opacity: 1;
    transform: translateY(0);
}

/* 减少动画模式支持 */
@media (prefers-reduced-motion: reduce) {
    .fade-in-section,
    .service-card,
    .advantage-card,
    .contact-item,
    .about-content {
        opacity: 1 !important;
        transform: none !important;
        transition: none !important;
    }
    
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    html {
        scroll-behavior: auto;
    }
}