/* ==================== 
   全局样式与变量 - 科技感主题
   ==================== */
:root {
    /* 深色科技主题色 */
    --primary-color: #00d4ff;
    --primary-dark: #0099cc;
    --primary-light: #66e0ff;
    --primary-glow: rgba(0, 212, 255, 0.5);
    
    /* 辅助色 */
    --secondary-color: #00ff88;
    --accent-color: #ff00ff;
    --warning-color: #ffaa00;
    
    /* 深色背景 */
    --bg-primary: #0a0e27;
    --bg-secondary: #151a3d;
    --bg-tertiary: #1a2044;
    --bg-card: rgba(26, 32, 68, 0.7);
    
    /* 文字颜色 */
    --text-primary: #ffffff;
    --text-secondary: #b4c6e7;
    --text-muted: #6c7dab;
    
    /* 发光效果 */
    --glow-primary: 0 0 20px rgba(0, 212, 255, 0.6);
    --glow-secondary: 0 0 20px rgba(0, 255, 136, 0.6);
    --glow-shadow: 0 8px 32px rgba(0, 212, 255, 0.3);
    
    /* 渐变 */
    --gradient-primary: linear-gradient(135deg, #00d4ff 0%, #0099cc 100%);
    --gradient-bg: linear-gradient(180deg, #0a0e27 0%, #151a3d 50%, #0a0e27 100%);
    --gradient-card: linear-gradient(135deg, rgba(0, 212, 255, 0.1) 0%, rgba(0, 255, 136, 0.05) 100%);
    
    /* 玻璃效果 */
    --glass-bg: rgba(26, 32, 68, 0.6);
    --glass-border: rgba(0, 212, 255, 0.2);
    
    /* 字体 */
    --font-primary: 'Microsoft YaHei', 'PingFang SC', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-tech: 'Courier New', monospace;
    
    /* 过渡 */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ==================== 
   重置样式
   ==================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    color: var(--text-primary);
    line-height: 1.6;
    background: var(--bg-primary);
    position: relative;
    overflow-x: hidden;
}

/* 背景网格效果 */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(0, 212, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 212, 255, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    pointer-events: none;
    z-index: 0;
}

/* 动态粒子背景容器 */
#particles-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

ul, ol {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* ==================== 
   布局容器
   ==================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    position: relative;
    z-index: 1;
}

.section {
    padding: 100px 0;
    position: relative;
    z-index: 1;
}

/* Section装饰线条 */
.section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 200px;
    height: 2px;
    background: var(--gradient-primary);
    box-shadow: var(--glow-primary);
}

/* ==================== 
   导航栏 - 科技风格
   ==================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--glass-border);
    z-index: 1000;
    transition: var(--transition);
}

.navbar.scrolled {
    background: rgba(10, 14, 39, 0.95);
    box-shadow: 0 4px 30px rgba(0, 212, 255, 0.2);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo {
    font-size: 26px;
    font-weight: bold;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: flex;
    align-items: center;
    gap: 12px;
    text-shadow: 0 0 30px rgba(0, 212, 255, 0.5);
}

.logo-icon {
    width: 45px;
    height: 45px;
    background: var(--gradient-primary);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--bg-primary);
    font-size: 22px;
    box-shadow: var(--glow-primary);
    position: relative;
    overflow: hidden;
}

.logo-icon::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent 30%, rgba(255, 255, 255, 0.3) 50%, transparent 70%);
    animation: logoShine 3s infinite;
}

@keyframes logoShine {
    0% { transform: translateX(-100%) rotate(45deg); }
    100% { transform: translateX(100%) rotate(45deg); }
}

.nav-menu {
    display: flex;
    gap: 50px;
}

.nav-link {
    font-size: 16px;
    color: var(--text-secondary);
    padding: 10px 0;
    position: relative;
    font-weight: 500;
    transition: var(--transition);
}

.nav-link::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: var(--transition);
    transform: translateX(-50%);
    box-shadow: var(--glow-primary);
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-color);
    text-shadow: 0 0 10px rgba(0, 212, 255, 0.5);
}

.nav-link:hover::before,
.nav-link.active::before {
    width: 100%;
}

/* 移动端菜单按钮 */
.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    cursor: pointer;
    padding: 10px;
}

.menu-toggle span {
    width: 28px;
    height: 2px;
    background: var(--primary-color);
    transition: var(--transition);
    box-shadow: var(--glow-primary);
}

/* ==================== 
   Hero横幅 - 科技风格
   ==================== */
.hero {
    min-height: 100vh;
    background: var(--gradient-bg);
    color: var(--white);
    padding: 180px 0 120px;
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
}

/* 科技网格背景 */
.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 50%, rgba(0, 212, 255, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 50%, rgba(0, 255, 136, 0.1) 0%, transparent 50%);
    animation: pulseGlow 4s ease-in-out infinite alternate;
}

@keyframes pulseGlow {
    0% { opacity: 0.5; }
    100% { opacity: 1; }
}

/* 科技线条装饰 */
.hero::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        repeating-linear-gradient(0deg, transparent, transparent 2px, rgba(0, 212, 255, 0.05) 2px, rgba(0, 212, 255, 0.05) 4px),
        repeating-linear-gradient(90deg, transparent, transparent 2px, rgba(0, 212, 255, 0.05) 2px, rgba(0, 212, 255, 0.05) 4px);
    background-size: 100px 100px;
    animation: gridMove 20s linear infinite;
}

@keyframes gridMove {
    0% { transform: translate(0, 0); }
    100% { transform: translate(100px, 100px); }
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
}

.hero h1 {
    font-size: 56px;
    font-weight: bold;
    margin-bottom: 25px;
    background: linear-gradient(135deg, #ffffff 0%, #00d4ff 50%, #00ff88 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: fadeInUp 0.8s ease;
    text-shadow: 0 0 40px rgba(0, 212, 255, 0.5);
    position: relative;
}

/* 标题装饰线条 */
.hero h1::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 150px;
    height: 3px;
    background: var(--gradient-primary);
    box-shadow: var(--glow-primary);
}

.hero-subtitle {
    font-size: 28px;
    margin-bottom: 30px;
    color: var(--primary-light);
    animation: fadeInUp 0.8s ease 0.2s both;
    font-weight: 300;
    letter-spacing: 2px;
}

.hero-desc {
    font-size: 18px;
    max-width: 800px;
    margin: 0 auto 50px;
    color: var(--text-secondary);
    animation: fadeInUp 0.8s ease 0.4s both;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 25px;
    justify-content: center;
    animation: fadeInUp 0.8s ease 0.6s both;
}

.btn {
    display: inline-block;
    padding: 16px 42px;
    border-radius: 50px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid transparent;
    position: relative;
    overflow: hidden;
    letter-spacing: 1px;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--bg-primary);
    box-shadow: var(--glow-primary);
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
    transition: var(--transition);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 0 40px rgba(0, 212, 255, 0.8);
}

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

.btn-outline {
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
    box-shadow: inset 0 0 20px rgba(0, 212, 255, 0.1);
}

.btn-outline:hover {
    background: var(--primary-color);
    color: var(--bg-primary);
    box-shadow: var(--glow-primary);
    transform: translateY(-3px);
}

/* ==================== 
   Section标题 - 科技风格
   ==================== */
.section-title {
    text-align: center;
    margin-bottom: 70px;
    position: relative;
}

.section-title h2 {
    font-size: 42px;
    color: var(--text-primary);
    margin-bottom: 20px;
    position: relative;
    display: inline-block;
    background: linear-gradient(135deg, #ffffff 0%, #00d4ff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 0 30px rgba(0, 212, 255, 0.3);
}

.section-title h2::before,
.section-title h2::after {
    content: '';
    position: absolute;
    top: 50%;
    width: 80px;
    height: 1px;
    background: var(--gradient-primary);
    box-shadow: var(--glow-primary);
}

.section-title h2::before {
    right: calc(100% + 20px);
}

.section-title h2::after {
    left: calc(100% + 20px);
}

.section-title p {
    font-size: 18px;
    color: var(--text-muted);
    margin-top: 15px;
    letter-spacing: 1px;
}

/* ==================== 
   业务卡片 - 科技风格
   ==================== */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 35px;
}

.service-card {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 45px 35px;
    text-align: center;
    border: 1px solid var(--glass-border);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

/* 卡片角落装饰 */
.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 50px;
    height: 50px;
    border-top: 2px solid var(--primary-color);
    border-left: 2px solid var(--primary-color);
    opacity: 0.5;
    transition: var(--transition);
}

.service-card::after {
    content: '';
    position: absolute;
    bottom: 0;
    right: 0;
    width: 50px;
    height: 50px;
    border-bottom: 2px solid var(--primary-color);
    border-right: 2px solid var(--primary-color);
    opacity: 0.5;
    transition: var(--transition);
}

.service-card:hover {
    transform: translateY(-10px);
    border-color: var(--primary-color);
    box-shadow: 
        0 0 30px rgba(0, 212, 255, 0.4),
        inset 0 0 30px rgba(0, 212, 255, 0.05);
}

.service-card:hover::before,
.service-card:hover::after {
    width: 100%;
    height: 100%;
    opacity: 1;
}

.service-icon {
    width: 90px;
    height: 90px;
    background: var(--gradient-card);
    border: 2px solid var(--primary-color);
    border-radius: 50%;
    margin: 0 auto 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 40px;
    color: var(--primary-color);
    transition: var(--transition);
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.3);
    position: relative;
}

/* 图标脉冲效果 */
.service-icon::before {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    border: 2px solid var(--primary-color);
    animation: iconPulse 2s ease-out infinite;
}

@keyframes iconPulse {
    0% {
        transform: scale(1);
        opacity: 1;
    }
    100% {
        transform: scale(1.4);
        opacity: 0;
    }
}

.service-card:hover .service-icon {
    background: var(--gradient-primary);
    color: var(--bg-primary);
    transform: rotateY(360deg) scale(1.1);
    box-shadow: var(--glow-primary);
}

.service-card h3 {
    font-size: 24px;
    margin-bottom: 18px;
    color: var(--text-primary);
    font-weight: 600;
}

.service-card p {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.8;
}

/* ==================== 
   优势特色 - 科技风格
   ==================== */
.features {
    background: var(--bg-secondary);
    position: relative;
}

.features::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 30% 30%, rgba(0, 212, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 70% 70%, rgba(0, 255, 136, 0.08) 0%, transparent 50%);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 40px;
    position: relative;
    z-index: 1;
}

.feature-item {
    text-align: center;
    padding: 40px 30px;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border-radius: 16px;
    border: 1px solid var(--glass-border);
    transition: var(--transition);
    position: relative;
}

/* 数据流动画效果 */
.feature-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 2px;
    background: var(--gradient-primary);
    transition: var(--transition-slow);
}

.feature-item:hover::before {
    left: 100%;
}

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

.feature-icon {
    width: 80px;
    height: 80px;
    background: var(--gradient-primary);
    border-radius: 16px;
    margin: 0 auto 25px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 36px;
    color: var(--bg-primary);
    box-shadow: var(--glow-primary);
    transition: var(--transition);
}

.feature-item:hover .feature-icon {
    transform: rotateY(180deg);
    box-shadow: 0 0 30px rgba(0, 212, 255, 0.8);
}

.feature-item h3 {
    font-size: 22px;
    margin-bottom: 15px;
    color: var(--text-primary);
    font-weight: 600;
}

.feature-item p {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ==================== 
   关于我们页面 - 科技风格
   ==================== */
.about-hero,
.products-hero,
.contact-hero {
    background: var(--gradient-bg);
    color: var(--white);
    padding: 180px 0 100px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.about-hero::before,
.products-hero::before,
.contact-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 50% 50%, rgba(0, 212, 255, 0.15) 0%, transparent 60%);
    animation: pulseGlow 4s ease-in-out infinite alternate;
}

.about-hero h1,
.products-hero h1,
.contact-hero h1 {
    font-size: 52px;
    margin-bottom: 20px;
    background: linear-gradient(135deg, #ffffff 0%, #00d4ff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 0 40px rgba(0, 212, 255, 0.5);
    position: relative;
    z-index: 1;
}

.about-hero p,
.products-hero p,
.contact-hero p {
    font-size: 22px;
    color: var(--text-secondary);
    position: relative;
    z-index: 1;
}

.about-content {
    padding: 100px 0;
    background: var(--bg-primary);
}

.about-intro {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    margin-bottom: 100px;
}

.about-text h2 {
    font-size: 36px;
    margin-bottom: 30px;
    background: linear-gradient(135deg, #ffffff 0%, #00d4ff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.about-text p {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 2;
    margin-bottom: 20px;
}

.about-image {
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--glow-shadow);
    border: 1px solid var(--glass-border);
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
}

.about-image img {
    width: 100%;
    height: auto;
}

/* 公司文化 */
.culture-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 35px;
    margin-top: 60px;
}

.culture-item {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    padding: 50px 35px;
    border-radius: 20px;
    text-align: center;
    border: 1px solid var(--glass-border);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

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

.culture-item .icon {
    font-size: 56px;
    margin-bottom: 25px;
    filter: drop-shadow(0 0 15px rgba(0, 212, 255, 0.5));
}

.culture-item h3 {
    font-size: 24px;
    margin-bottom: 18px;
    color: var(--primary-color);
    font-weight: 600;
}

.culture-item p {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.8;
}

/* 发展历程 */
.timeline {
    position: relative;
    padding: 40px 0;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--gradient-primary);
    box-shadow: var(--glow-primary);
    transform: translateX(-50%);
}

.timeline-item {
    display: flex;
    justify-content: flex-end;
    padding-right: calc(50% + 40px);
    position: relative;
    margin-bottom: 50px;
}

.timeline-item:nth-child(even) {
    justify-content: flex-start;
    padding-right: 0;
    padding-left: calc(50% + 40px);
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 25px;
    width: 20px;
    height: 20px;
    background: var(--bg-primary);
    border: 3px solid var(--primary-color);
    border-radius: 50%;
    transform: translateX(-50%);
    box-shadow: var(--glow-primary);
    z-index: 1;
}

.timeline-item::after {
    content: '';
    position: absolute;
    left: 50%;
    top: 35px;
    width: 12px;
    height: 12px;
    background: var(--primary-color);
    border-radius: 50%;
    transform: translateX(-50%);
    animation: timelinePulse 2s ease-out infinite;
}

@keyframes timelinePulse {
    0% {
        transform: translateX(-50%) scale(1);
        opacity: 1;
    }
    100% {
        transform: translateX(-50%) scale(2);
        opacity: 0;
    }
}

.timeline-content {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    padding: 30px 35px;
    border-radius: 16px;
    border: 1px solid var(--glass-border);
    max-width: 450px;
    transition: var(--transition);
}

.timeline-content:hover {
    border-color: var(--primary-color);
    box-shadow: var(--glow-shadow);
}

.timeline-content h3 {
    color: var(--primary-color);
    font-size: 22px;
    margin-bottom: 12px;
    font-weight: 600;
}

.timeline-content p {
    color: var(--text-secondary);
    font-size: 15px;
    line-height: 1.7;
}

/* ==================== 
   产品服务页面 - 科技风格
   ==================== */
.products-content {
    padding: 100px 0;
    background: var(--bg-primary);
}

.product-item {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    margin-bottom: 100px;
}

.product-item:nth-child(even) {
    direction: rtl;
}

.product-item:nth-child(even) > * {
    direction: ltr;
}

.product-info h3 {
    font-size: 32px;
    margin-bottom: 25px;
    background: linear-gradient(135deg, #ffffff 0%, #00d4ff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 600;
}

.product-info p {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 2;
    margin-bottom: 25px;
}

.product-features {
    list-style: none;
}

.product-features li {
    padding: 12px 0;
    color: var(--text-secondary);
    position: relative;
    padding-left: 35px;
    border-bottom: 1px solid rgba(0, 212, 255, 0.1);
    transition: var(--transition);
}

.product-features li:hover {
    color: var(--primary-color);
    padding-left: 40px;
}

.product-features li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-size: 18px;
    text-shadow: var(--glow-primary);
}

.product-image {
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--glow-shadow);
    border: 1px solid var(--glass-border);
    background: var(--gradient-card);
    padding: 50px;
    min-height: 350px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.product-image-placeholder {
    font-size: 100px;
    color: var(--primary-color);
    filter: drop-shadow(0 0 30px rgba(0, 212, 255, 0.5));
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
}

/* 技术栈 */
.tech-stack {
    background: var(--bg-secondary);
    padding: 100px 0;
    position: relative;
}

.tech-stack::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 50% 50%, rgba(0, 212, 255, 0.1) 0%, transparent 60%);
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 30px;
    margin-top: 60px;
    position: relative;
    z-index: 1;
}

.tech-item {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    padding: 35px 25px;
    border-radius: 16px;
    text-align: center;
    border: 1px solid var(--glass-border);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.tech-item::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: conic-gradient(from 0deg, transparent, var(--primary-color), transparent 30%);
    animation: rotate 4s linear infinite;
    opacity: 0;
    transition: var(--transition);
}

@keyframes rotate {
    100% { transform: rotate(360deg); }
}

.tech-item:hover::before {
    opacity: 0.3;
}

.tech-item:hover {
    transform: translateY(-8px);
    border-color: var(--primary-color);
    box-shadow: var(--glow-shadow);
}

.tech-item .icon {
    font-size: 52px;
    margin-bottom: 18px;
    color: var(--primary-color);
    filter: drop-shadow(0 0 10px rgba(0, 212, 255, 0.5));
    transition: var(--transition);
}

.tech-item:hover .icon {
    transform: scale(1.2);
    filter: drop-shadow(0 0 20px rgba(0, 212, 255, 0.8));
}

.tech-item h4 {
    font-size: 16px;
    color: var(--text-primary);
    font-weight: 500;
}

/* ==================== 
   联系我们页面 - 科技风格
   ==================== */
.contact-content {
    padding: 100px 0;
    background: var(--bg-primary);
}

/* 联系卡片网格布局 */
.contact-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 35px;
    margin-top: 50px;
}

.contact-card {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    padding: 50px 35px;
    border-radius: 20px;
    text-align: center;
    border: 1px solid var(--glass-border);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

/* 卡片扫描线效果 */
.contact-card::before {
    content: '';
    position: absolute;
    top: -100%;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(0deg, transparent, rgba(0, 212, 255, 0.2), transparent);
    animation: scanLine 3s linear infinite;
}

@keyframes scanLine {
    0% { top: -100%; }
    100% { top: 200%; }
}

.contact-card:hover {
    transform: translateY(-12px);
    border-color: var(--primary-color);
    box-shadow: 
        0 0 40px rgba(0, 212, 255, 0.5),
        inset 0 0 40px rgba(0, 212, 255, 0.05);
}

.contact-card-icon {
    width: 90px;
    height: 90px;
    background: var(--gradient-primary);
    border-radius: 50%;
    margin: 0 auto 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 38px;
    color: var(--bg-primary);
    box-shadow: var(--glow-primary);
    transition: var(--transition);
    position: relative;
}

.contact-card-icon::before {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    border: 2px solid var(--primary-color);
    animation: iconPulse 2s ease-out infinite;
}

.contact-card:hover .contact-card-icon {
    transform: rotateY(360deg) scale(1.1);
    box-shadow: 0 0 40px rgba(0, 212, 255, 0.8);
}

.contact-card h3 {
    font-size: 22px;
    margin-bottom: 18px;
    color: var(--text-primary);
    font-weight: 600;
}

.contact-card-value {
    font-size: 20px;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 10px;
    word-break: break-word;
    text-shadow: 0 0 10px rgba(0, 212, 255, 0.3);
}

.contact-card-desc {
    font-size: 14px;
    color: var(--text-muted);
}

/* 地图 */
.map-section {
    padding: 0 0 100px;
    background: var(--bg-primary);
}

.map-container {
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--glow-shadow);
    border: 1px solid var(--glass-border);
    height: 450px;
    background: var(--bg-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
}

/* ==================== 
   Footer底部 - 科技风格
   ==================== */
.footer {
    background: var(--bg-secondary);
    color: var(--white);
    padding: 80px 0 40px;
    position: relative;
    border-top: 1px solid var(--glass-border);
}

/* Footer顶部光效 */
.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--gradient-primary);
    box-shadow: var(--glow-primary);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 50px;
    margin-bottom: 50px;
}

.footer-brand h3 {
    font-size: 28px;
    margin-bottom: 20px;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 0 30px rgba(0, 212, 255, 0.5);
}

.footer-brand p {
    font-size: 15px;
    color: var(--text-muted);
    line-height: 2;
}

.footer-links h4 {
    font-size: 18px;
    margin-bottom: 25px;
    color: var(--text-primary);
    font-weight: 600;
    position: relative;
    padding-bottom: 10px;
}

.footer-links h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 30px;
    height: 2px;
    background: var(--gradient-primary);
    box-shadow: var(--glow-primary);
}

.footer-links ul li {
    margin-bottom: 15px;
}

.footer-links a {
    color: var(--text-muted);
    font-size: 15px;
    transition: var(--transition);
    display: inline-block;
}

.footer-links a:hover {
    color: var(--primary-color);
    text-shadow: 0 0 10px rgba(0, 212, 255, 0.5);
    transform: translateX(5px);
}

.footer-bottom {
    border-top: 1px solid rgba(0, 212, 255, 0.1);
    padding-top: 30px;
    text-align: center;
    color: var(--text-muted);
    font-size: 14px;
}

.footer-bottom a {
    color: var(--text-muted);
    text-decoration: none;
    transition: var(--transition);
}

.footer-bottom a:hover {
    color: var(--primary-color);
    text-shadow: 0 0 10px rgba(0, 212, 255, 0.5);
}

/* ==================== 
   动画
   ==================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeInUp 0.8s ease;
}

/* ==================== 
   响应式设计
   ==================== */
@media (max-width: 992px) {
    .nav-menu {
        position: fixed;
        top: 80px;
        left: 0;
        right: 0;
        background: rgba(10, 14, 39, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 40px;
        gap: 25px;
        box-shadow: 0 10px 40px rgba(0, 212, 255, 0.3);
        transform: translateY(-150%);
        transition: var(--transition);
        border-bottom: 1px solid var(--glass-border);
    }
    
    .nav-menu.active {
        transform: translateY(0);
    }
    
    .menu-toggle {
        display: flex;
    }
    
    .about-intro,
    .contact-grid,
    .product-item {
        grid-template-columns: 1fr;
        gap: 50px;
    }
    
    .culture-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr 1fr;
    }
    
    .timeline::before {
        left: 20px;
    }
    
    .timeline-item,
    .timeline-item:nth-child(even) {
        padding-left: 70px;
        padding-right: 0;
        justify-content: flex-start;
    }
    
    .timeline-item::before,
    .timeline-item::after {
        left: 20px;
    }
    
    .section-title h2::before,
    .section-title h2::after {
        display: none;
    }
    
    .hero h1 {
        font-size: 40px;
    }
    
    .hero-subtitle {
        font-size: 22px;
    }
    
    .section-title h2 {
        font-size: 32px;
    }
}

@media (max-width: 768px) {
    .hero {
        padding: 140px 0 80px;
    }
    
    .hero h1 {
        font-size: 32px;
    }
    
    .hero-subtitle {
        font-size: 18px;
    }
    
    .section-title h2 {
        font-size: 28px;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-links h4::after {
        left: 50%;
        transform: translateX(-50%);
    }
}

@media (max-width: 576px) {
    .container {
        padding: 0 15px;
    }
    
    .section {
        padding: 70px 0;
    }
    
    .logo {
        font-size: 20px;
    }
    
    .hero h1 {
        font-size: 26px;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
}