/* ============================================
   晶浦电子官网 - 主样式文件
   设计风格：大厂质感、国际化、科技感
   配色方案：深蓝+橙色+绿色+青色（半导体行业色）
   ============================================ */

/* CSS Variables */
:root {
    /* Primary Colors - 半导体行业蓝色系 */
    --primary-dark: #0A2540;
    --primary-blue: #1E4A7A;
    --primary-light: #2E5F8F;
    
    /* Accent Colors */
    --accent-orange: #FF6B35;
    --accent-green: #06A77D;
    --accent-cyan: #00B4D8;
    
    /* Neutral Colors */
    --dark-bg: #0F172A;
    --dark-card: #1A2332;
    --text-dark: #1E293B;
    --text-light: #64748B;
    --text-white: #FFFFFF;
    --border-color: #E2E8F0;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #1E4A7A 0%, #2E5F8F 100%);
    --gradient-accent: linear-gradient(135deg, #FF6B35 0%, #FF8C42 100%);
    --gradient-tech: linear-gradient(135deg, #00B4D8 0%, #06A77D 100%);
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.16);
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--text-white);
    overflow-x: hidden;
}

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--text-dark);
}

h1 {
    font-size: 3.5rem;
    font-weight: 800;
}

h2 {
    font-size: 2.5rem;
    font-weight: 700;
}

h3 {
    font-size: 1.5rem;
    font-weight: 600;
}

h4 {
    font-size: 1.25rem;
    font-weight: 600;
}

p {
    margin-bottom: var(--spacing-sm);
    color: var(--text-light);
}

a {
    color: var(--primary-blue);
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

ul {
    list-style: none;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 1rem 2rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 1rem;
    text-align: center;
    transition: all var(--transition-normal);
    cursor: pointer;
    border: none;
    outline: none;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    color: var(--text-white);
}

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

.btn-secondary:hover {
    background: var(--text-white);
    color: var(--primary-blue);
}

.btn-outline {
    background: transparent;
    color: var(--primary-blue);
    border: 2px solid var(--primary-blue);
}

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

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: all var(--transition-normal);
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 0;
}

.logo {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.logo-text {
    font-size: 2rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
}

.logo-subtitle {
    font-size: 0.75rem;
    color: var(--text-light);
    letter-spacing: 1px;
    margin-top: 0.25rem;
}

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

.nav-menu a {
    color: var(--text-dark);
    font-weight: 500;
    transition: color var(--transition-fast);
    position: relative;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width var(--transition-normal);
}

.nav-menu a:hover::after {
    width: 100%;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: var(--text-dark);
    border-radius: 2px;
    transition: all var(--transition-normal);
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    overflow: hidden;
    padding-top: 80px;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('../images/hero-bg.jpg') center/cover no-repeat;
    opacity: 0.15;
}

/* 科技感网格背景 */
.hero-background::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(rgba(0, 180, 216, 0.1) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 180, 216, 0.1) 1px, transparent 1px);
    background-size: 50px 50px;
    animation: gridMove 20s linear infinite;
}

/* 动态粒子效果 */
.hero-background::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 20% 30%, rgba(0, 180, 216, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(6, 167, 125, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 50% 50%, rgba(255, 107, 53, 0.2) 0%, transparent 50%);
    animation: particleFloat 15s ease-in-out infinite;
}

@keyframes gridMove {
    0% {
        transform: translate(0, 0);
    }
    100% {
        transform: translate(50px, 50px);
    }
}

@keyframes particleFloat {
    0%, 100% {
        opacity: 0.5;
        transform: scale(1);
    }
    50% {
        opacity: 0.8;
        transform: scale(1.1);
    }
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(10, 37, 64, 0.85) 0%, rgba(30, 74, 122, 0.75) 100%);
}

/* 电路板纹理效果 */
.hero-overlay::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: url("data:image/svg+xml,%3Csvg width='100' height='100' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M10 10 L90 10 L90 90 L10 90 Z' fill='none' stroke='rgba(0,180,216,0.1)' stroke-width='1'/%3E%3Ccircle cx='10' cy='10' r='3' fill='rgba(0,180,216,0.2)'/%3E%3Ccircle cx='90' cy='10' r='3' fill='rgba(0,180,216,0.2)'/%3E%3Ccircle cx='90' cy='90' r='3' fill='rgba(0,180,216,0.2)'/%3E%3Ccircle cx='10' cy='90' r='3' fill='rgba(0,180,216,0.2)'/%3E%3C/svg%3E");
    opacity: 0.3;
    animation: circuitPulse 8s ease-in-out infinite;
}

@keyframes circuitPulse {
    0%, 100% {
        opacity: 0.2;
    }
    50% {
        opacity: 0.4;
    }
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: var(--text-white);
    max-width: 900px;
    margin: 0 auto;
}

.hero-title {
    font-size: 4rem;
    font-weight: 800;
    margin-bottom: var(--spacing-md);
    color: var(--text-white);
    line-height: 1.2;
    animation: fadeInUp 1s ease;
}

.gradient-text {
    background: linear-gradient(135deg, #00B4D8 0%, #06A77D 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-lg);
    color: rgba(255, 255, 255, 0.9);
    font-weight: 300;
    animation: fadeInUp 1s ease 0.2s both;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    animation: fadeInUp 1s ease 0.4s both;
}

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

.stat-number {
    font-size: 3rem;
    font-weight: 800;
    color: var(--text-white);
    margin-bottom: var(--spacing-xs);
    background: linear-gradient(135deg, #00B4D8 0%, #06A77D 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.8);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    animation: fadeInUp 1s ease 0.6s both;
}

.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
}

.mouse {
    width: 25px;
    height: 40px;
    border: 2px solid rgba(255, 255, 255, 0.5);
    border-radius: 15px;
    position: relative;
}

.wheel {
    width: 4px;
    height: 8px;
    background: rgba(255, 255, 255, 0.8);
    border-radius: 2px;
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    animation: scroll 2s infinite;
}

@keyframes scroll {
    0% {
        opacity: 1;
        top: 8px;
    }
    100% {
        opacity: 0;
        top: 20px;
    }
}

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

/* Section Styles */
section {
    padding: var(--spacing-xl) 0;
}

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

.section-title {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    font-size: 1.25rem;
    color: var(--text-light);
    font-weight: 300;
}

/* Mission Section */
.mission {
    background: var(--text-white);
    position: relative;
    overflow: hidden;
}

/* 科技感背景装饰 */
.mission::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(0, 180, 216, 0.05) 0%, transparent 70%);
    border-radius: 50%;
    animation: float 20s ease-in-out infinite;
}

.mission::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -5%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(6, 167, 125, 0.05) 0%, transparent 70%);
    border-radius: 50%;
    animation: float 15s ease-in-out infinite reverse;
}

@keyframes float {
    0%, 100% {
        transform: translate(0, 0) scale(1);
    }
    50% {
        transform: translate(30px, -30px) scale(1.1);
    }
}

.mission-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
    position: relative;
    z-index: 1;
}

.mission-card {
    padding: var(--spacing-md);
    background: var(--dark-card);
    border-radius: var(--radius-lg);
    text-align: center;
    transition: all var(--transition-normal);
    border: 1px solid var(--border-color);
}

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

.mission-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
}

.mission-card h3 {
    color: var(--text-white);
    margin-bottom: var(--spacing-sm);
}

.mission-card p {
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.8;
}

/* Journey Section */
.journey {
    background: linear-gradient(135deg, #F8FAFC 0%, #E2E8F0 100%);
    position: relative;
    overflow: hidden;
}

/* 科技感背景 */
.journey::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        repeating-linear-gradient(45deg, transparent, transparent 35px, rgba(0, 180, 216, 0.03) 35px, rgba(0, 180, 216, 0.03) 70px),
        repeating-linear-gradient(-45deg, transparent, transparent 35px, rgba(6, 167, 125, 0.03) 35px, rgba(6, 167, 125, 0.03) 70px);
    animation: slideBackground 30s linear infinite;
}

@keyframes slideBackground {
    0% {
        transform: translateX(0);
    }
    100% {
        transform: translateX(70px);
    }
}

.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
    z-index: 1;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 2px;
    height: 100%;
    background: var(--gradient-primary);
}

.timeline-item {
    position: relative;
    margin-bottom: var(--spacing-lg);
    display: flex;
    justify-content: flex-end;
    padding-right: calc(50% + 2rem);
}

.timeline-item:nth-child(even) {
    justify-content: flex-start;
    padding-right: 0;
    padding-left: calc(50% + 2rem);
}

.timeline-year {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 80px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-white);
    font-weight: 700;
    font-size: 1.25rem;
    box-shadow: var(--shadow-md);
}

.timeline-content {
    background: var(--text-white);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    max-width: 400px;
    transition: all var(--transition-normal);
}

.timeline-content:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-3px);
}

.timeline-content h3 {
    color: var(--primary-blue);
    margin-bottom: var(--spacing-xs);
}

/* Global Presence Section */
.global-presence {
    background: var(--text-white);
}

.presence-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
}

.presence-card {
    padding: var(--spacing-md);
    background: var(--dark-card);
    border-radius: var(--radius-lg);
    text-align: center;
    transition: all var(--transition-normal);
    border: 1px solid var(--border-color);
}

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

.presence-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
}

.presence-card h3 {
    color: var(--text-white);
    margin-bottom: var(--spacing-sm);
}

.presence-location {
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: var(--spacing-sm);
    font-size: 0.9rem;
}

.presence-team {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9rem;
}

/* Clients Section */
.clients {
    background: linear-gradient(135deg, #F8FAFC 0%, #E2E8F0 100%);
}

.clients-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.client-logo {
    padding: var(--spacing-md);
    background: var(--text-white);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    color: var(--text-dark);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
    min-height: 80px;
}

.client-logo:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
    color: var(--primary-blue);
}

.clients-note {
    text-align: center;
    font-size: 1.25rem;
    color: var(--text-light);
    font-style: italic;
}

/* Advantages Section */
.advantages {
    background: var(--text-white);
    position: relative;
    overflow: hidden;
}

/* 科技感粒子背景 */
.advantages::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 10% 20%, rgba(255, 107, 53, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 90% 80%, rgba(0, 180, 216, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 50% 50%, rgba(6, 167, 125, 0.03) 0%, transparent 50%);
    animation: pulseGlow 10s ease-in-out infinite;
}

@keyframes pulseGlow {
    0%, 100% {
        opacity: 0.5;
    }
    50% {
        opacity: 1;
    }
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
    position: relative;
    z-index: 1;
}

.advantage-card {
    padding: var(--spacing-md);
    background: var(--dark-card);
    border-radius: var(--radius-lg);
    transition: all var(--transition-normal);
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.advantage-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--gradient-accent);
}

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

.advantage-number {
    font-size: 3rem;
    font-weight: 800;
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-sm);
}

.advantage-card h3 {
    color: var(--text-white);
    margin-bottom: var(--spacing-sm);
}

.advantage-card p {
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.8;
}

/* Products Section */
.products {
    background: linear-gradient(135deg, #F8FAFC 0%, #E2E8F0 100%);
    position: relative;
    overflow: hidden;
}

/* 科技感波纹背景 */
.products::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: 
        radial-gradient(circle at 30% 40%, rgba(0, 180, 216, 0.04) 0%, transparent 50%),
        radial-gradient(circle at 70% 60%, rgba(255, 107, 53, 0.04) 0%, transparent 50%);
    animation: rotateGlow 30s linear infinite;
}

@keyframes rotateGlow {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
    position: relative;
    z-index: 1;
}

.product-card {
    padding: var(--spacing-md);
    background: var(--text-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
    text-align: center;
}

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

.product-icon {
    font-size: 4rem;
    margin-bottom: var(--spacing-sm);
}

.product-card h3 {
    color: var(--primary-blue);
    margin-bottom: var(--spacing-sm);
}

.product-description {
    color: var(--text-light);
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
}

.product-features {
    text-align: left;
    margin-bottom: var(--spacing-md);
}

.product-features li {
    padding: var(--spacing-xs) 0;
    color: var(--text-dark);
    border-bottom: 1px solid var(--border-color);
}

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

.product-features li::before {
    content: '✓';
    color: var(--accent-green);
    font-weight: 700;
    margin-right: var(--spacing-xs);
}

/* Technology Section */
.technology {
    background: var(--text-white);
    position: relative;
    overflow: hidden;
}

/* 科技感网格背景 */
.technology::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(rgba(0, 180, 216, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 180, 216, 0.03) 1px, transparent 1px);
    background-size: 30px 30px;
    animation: gridSlide 25s linear infinite;
}

@keyframes gridSlide {
    0% {
        transform: translate(0, 0);
    }
    100% {
        transform: translate(30px, 30px);
    }
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    position: relative;
    z-index: 1;
}

.tech-card {
    padding: var(--spacing-md);
    background: var(--dark-card);
    border-radius: var(--radius-lg);
    transition: all var(--transition-normal);
    border: 1px solid var(--border-color);
}

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

.tech-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
}

.tech-card h3 {
    color: var(--text-white);
    margin-bottom: var(--spacing-sm);
}

.tech-card ul {
    color: rgba(255, 255, 255, 0.8);
}

.tech-card li {
    padding: var(--spacing-xs) 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

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

.tech-note {
    text-align: center;
    padding: var(--spacing-md);
    background: var(--dark-card);
    border-radius: var(--radius-lg);
    color: var(--text-white);
}

.tech-note p {
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--spacing-xs);
}

/* About Section */
.about {
    background: linear-gradient(135deg, #F8FAFC 0%, #E2E8F0 100%);
    position: relative;
    overflow: hidden;
}

/* 科技感光效背景 */
.about::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        repeating-linear-gradient(90deg, transparent, transparent 100px, rgba(0, 180, 216, 0.02) 100px, rgba(0, 180, 216, 0.02) 200px),
        repeating-linear-gradient(0deg, transparent, transparent 100px, rgba(6, 167, 125, 0.02) 100px, rgba(6, 167, 125, 0.02) 200px);
    animation: slideGrid 40s linear infinite;
}

@keyframes slideGrid {
    0% {
        transform: translate(0, 0);
    }
    100% {
        transform: translate(200px, 200px);
    }
}

.about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-lg);
    align-items: start;
    position: relative;
    z-index: 1;
}

.about-text h3 {
    color: var(--primary-blue);
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
}

.about-text h3:first-child {
    margin-top: 0;
}

.about-text p {
    line-height: 1.8;
    margin-bottom: var(--spacing-sm);
}

.about-text ul {
    margin-left: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
}

.about-text li {
    padding: var(--spacing-xs) 0;
    color: var(--text-dark);
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
}

.stat-box {
    padding: var(--spacing-md);
    background: var(--text-white);
    border-radius: var(--radius-md);
    text-align: center;
    box-shadow: var(--shadow-sm);
}

.stat-box .stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-xs);
}

.stat-box .stat-label {
    font-size: 0.9rem;
    color: var(--text-light);
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Contact Section */
.contact {
    background: var(--text-white);
    position: relative;
    overflow: hidden;
}

/* 科技感渐变光效 */
.contact::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(255, 107, 53, 0.05) 0%, transparent 70%);
    border-radius: 50%;
    animation: floatSlow 25s ease-in-out infinite;
}

.contact::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(0, 180, 216, 0.05) 0%, transparent 70%);
    border-radius: 50%;
    animation: floatSlow 20s ease-in-out infinite reverse;
}

@keyframes floatSlow {
    0%, 100% {
        transform: translate(0, 0) scale(1);
    }
    50% {
        transform: translate(-40px, 40px) scale(1.15);
    }
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    position: relative;
    z-index: 1;
}

.contact-info h3 {
    color: var(--primary-blue);
    margin-bottom: var(--spacing-md);
}

.contact-item {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    padding: var(--spacing-sm);
    background: var(--dark-card);
    border-radius: var(--radius-md);
}

.contact-icon {
    font-size: 2rem;
}

.contact-item h4 {
    color: var(--text-white);
    margin-bottom: var(--spacing-xs);
}

.contact-item p {
    color: rgba(255, 255, 255, 0.8);
    margin: 0;
}

.cooperation-list {
    margin-left: var(--spacing-md);
}

.cooperation-list li {
    padding: var(--spacing-xs) 0;
    color: var(--text-dark);
}

.contact-form {
    padding: var(--spacing-md);
    background: var(--dark-card);
    border-radius: var(--radius-lg);
}

.contact-form h3 {
    color: var(--text-white);
    margin-bottom: var(--spacing-md);
}

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

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

.form-group input,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-sm);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: 1rem;
    background: var(--text-white);
    transition: border-color var(--transition-fast);
}

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

.form-note {
    margin-top: var(--spacing-md);
    padding: var(--spacing-md);
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
}

.form-note p {
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--spacing-xs);
}

/* Footer */
.footer {
    background: var(--dark-bg);
    color: var(--text-white);
    padding: var(--spacing-lg) 0 var(--spacing-md);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 2fr;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.footer-logo {
    display: flex;
    flex-direction: column;
    margin-bottom: var(--spacing-sm);
}

.footer-section h4 {
    color: var(--text-white);
    margin-bottom: var(--spacing-sm);
}

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

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

.footer-section a {
    color: rgba(255, 255, 255, 0.7);
    transition: color var(--transition-fast);
}

.footer-section a:hover {
    color: var(--text-white);
}

.footer-section p {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: var(--spacing-xs);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.9rem;
    margin-bottom: var(--spacing-xs);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .hero-title {
        font-size: 3rem;
    }
    
    .hero-stats {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .mission-grid,
    .presence-grid,
    .advantages-grid,
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .clients-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .tech-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .about-content {
        grid-template-columns: 1fr;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.25rem;
    }
    
    .hero-stats {
        grid-template-columns: 1fr;
        gap: var(--spacing-sm);
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .mission-grid,
    .presence-grid,
    .advantages-grid,
    .products-grid,
    .clients-grid,
    .tech-grid {
        grid-template-columns: 1fr;
    }
    
    .timeline::before {
        left: 40px;
    }
    
    .timeline-item,
    .timeline-item:nth-child(even) {
        padding-left: 100px;
        padding-right: 0;
    }
    
    .timeline-year {
        left: 40px;
        width: 60px;
        height: 60px;
        font-size: 1rem;
    }
    
    .about-stats {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    h1 {
        font-size: 2.5rem;
    }
    
    h2 {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
}