/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Colors */
    --primary-color: #00d4ff;
    --secondary-color: #6c5ce7;
    --accent-color: #00ff88;
    --success-color: #00ff88;
    --warning-color: #ffd700;
    --error-color: #ff4757;
    --text-primary: #0a0e27;
    --text-secondary: #64748b;
    --text-light: #f8fafc;
    --background-dark: #0a0e27;
    --background-light: #f8fafc;
    --glass-bg: rgba(248, 250, 252, 0.1);
    --glass-border: rgba(255, 255, 255, 0.2);
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    
    /* Breakpoints */
    --mobile: 480px;
    --tablet: 768px;
    --desktop: 1024px;
    --wide: 1440px;
    
    /* Animations */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--background-dark);
    background: linear-gradient(135deg, #0a0e27 0%, #1a1a2e 50%, #16213e 100%);
    min-height: 100vh;
    overflow-x: hidden;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* Utility Classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }
.hidden { display: none !important; }
.visible { display: block !important; }

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    color: var(--text-light);
}

h1 { font-size: 4rem; }
h2 { font-size: 3rem; }
h3 { font-size: 2rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1rem; }

p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

/* Buttons */
.btn-primary, .btn-secondary, .btn-ghost {
    display: inline-block;
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: 8px;
    text-decoration: none;
    font-weight: 500;
    text-align: center;
    transition: all var(--transition-normal);
    cursor: pointer;
    border: 2px solid transparent;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--text-light);
    box-shadow: 0 4px 20px rgba(0, 212, 255, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(0, 212, 255, 0.4);
}

.btn-secondary {
    background: transparent;
    color: var(--primary-color);
    border-color: var(--primary-color);
}

.btn-secondary:hover {
    background: var(--primary-color);
    color: var(--text-light);
    box-shadow: 0 4px 20px rgba(0, 212, 255, 0.3);
}

.btn-ghost {
    background: transparent;
    color: var(--text-light);
    border: none;
}

.btn-ghost:hover {
    color: var(--primary-color);
    text-shadow: 0 0 10px var(--primary-color);
}

.btn-large {
    padding: var(--spacing-lg) var(--spacing-2xl);
    font-size: 1.125rem;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--glass-border);
    transition: all var(--transition-normal);
}

.navbar.scrolled {
    background: rgba(10, 14, 39, 0.95);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) var(--spacing-lg);
    max-width: 1280px;
    margin: 0 auto;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--text-light);
    font-weight: 700;
    font-size: 1.25rem;
}

.logo {
    width: 32px;
    height: 32px;
    filter: brightness(0) invert(1);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-xl);
    align-items: center;
}

.nav-link {
    color: var(--text-light);
    text-decoration: none;
    font-weight: 500;
    transition: all var(--transition-normal);
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-color);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    transition: width var(--transition-normal);
}

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

/* Mobile Navigation */
.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--text-light);
    transition: all var(--transition-normal);
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}

/* Hero Section */
.hero {
    position: relative;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

#particle-canvas {
    width: 100%;
    height: 100%;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.hero-title {
    font-size: 4rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xl);
    background: linear-gradient(135deg, var(--text-light), var(--primary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.typing-text {
    display: inline-block;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-2xl);
    line-height: 1.6;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: var(--spacing-3xl);
    margin-bottom: var(--spacing-2xl);
}

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

.stat-number {
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary-color);
    display: block;
}

.stat-label {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-top: var(--spacing-sm);
}

.hero-cta {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
}

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

.mouse {
    width: 24px;
    height: 40px;
    border: 2px solid var(--text-secondary);
    border-radius: 12px;
    position: relative;
}

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

@keyframes scroll {
    0% { transform: translateX(-50%) translateY(0); opacity: 1; }
    100% { transform: translateX(-50%) translateY(20px); opacity: 0; }
}

/* Company Position Section */
.company-position {
    padding: var(--spacing-3xl) 0;
    background: rgba(255, 255, 255, 0.02);
    backdrop-filter: blur(10px);
}

.position-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-2xl);
    margin-top: var(--spacing-2xl);
}

.position-item {
    text-align: center;
    padding: var(--spacing-xl);
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    transition: all var(--transition-normal);
}

.position-item:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 212, 255, 0.1);
    border-color: var(--primary-color);
}

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

.position-item h3 {
    margin-bottom: var(--spacing-md);
    font-size: 1.5rem;
}

.position-item p {
    color: var(--text-secondary);
}

/* Section Styling */
section {
    padding: var(--spacing-3xl) 0;
}

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

.section-title {
    margin-bottom: var(--spacing-md);
}

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

/* Products Section */
.products {
    background: rgba(255, 255, 255, 0.02);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
    gap: var(--spacing-2xl);
    margin-top: var(--spacing-2xl);
}

.product-card {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: var(--spacing-2xl);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

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

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

.product-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 212, 255, 0.2);
    border-color: var(--primary-color);
}

.product-icon {
    margin-bottom: var(--spacing-lg);
}

.icon-3d {
    font-size: 4rem;
    display: inline-block;
    filter: drop-shadow(0 4px 8px rgba(0, 212, 255, 0.3));
}

.product-content h3 {
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
}

.product-tagline {
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.product-description {
    margin-bottom: var(--spacing-lg);
    line-height: 1.8;
}

.product-features {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.feature-tag {
    background: rgba(0, 212, 255, 0.2);
    color: var(--primary-color);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 500;
    border: 1px solid rgba(0, 212, 255, 0.3);
}

.product-benefits {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.benefit {
    text-align: center;
    font-size: 0.875rem;
}

.benefit strong {
    color: var(--accent-color);
    display: block;
    margin-bottom: var(--spacing-xs);
}

/* Solutions Section */
.solutions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-2xl);
    margin-top: var(--spacing-2xl);
}

.solution-item {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    padding: var(--spacing-xl);
    transition: all var(--transition-normal);
}

.solution-item:hover {
    transform: translateY(-4px);
    border-color: var(--secondary-color);
    box-shadow: 0 15px 30px rgba(108, 92, 231, 0.2);
}

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

.solution-item h3 {
    margin-bottom: var(--spacing-lg);
    font-size: 1.5rem;
}

.solution-item ul {
    list-style: none;
}

.solution-item li {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
    position: relative;
    padding-left: var(--spacing-lg);
}

.solution-item li::before {
    content: '→';
    color: var(--accent-color);
    position: absolute;
    left: 0;
    font-weight: bold;
}

/* Technology Section */
.technology {
    background: rgba(255, 255, 255, 0.02);
}

.tech-stack {
    margin: var(--spacing-2xl) 0;
}

.tech-layer {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
    transition: all var(--transition-normal);
}

.tech-layer:hover {
    border-color: var(--primary-color);
    box-shadow: 0 10px 30px rgba(0, 212, 255, 0.1);
}

.tech-layer h3 {
    margin-bottom: var(--spacing-lg);
    color: var(--primary-color);
}

.tech-items {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
}

.tech-item {
    background: rgba(0, 212, 255, 0.1);
    color: var(--text-light);
    padding: var(--spacing-md);
    border-radius: 8px;
    text-align: center;
    font-weight: 500;
    border: 1px solid rgba(0, 212, 255, 0.2);
    transition: all var(--transition-normal);
}

.tech-item:hover {
    background: rgba(0, 212, 255, 0.2);
    transform: translateY(-2px);
}

.innovation-highlights h3 {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
    font-size: 2rem;
}

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

.highlight-item {
    text-align: center;
    padding: var(--spacing-xl);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    transition: all var(--transition-normal);
}

.highlight-item:hover {
    transform: translateY(-4px);
    border-color: var(--accent-color);
}

.highlight-icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-lg);
}

.highlight-item h4 {
    margin-bottom: var(--spacing-md);
    color: var(--accent-color);
}

/* About Section */
.about-content {
    max-width: 800px;
    margin: 0 auto;
}

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

.about-text p {
    font-size: 1.125rem;
    line-height: 1.8;
    color: var(--text-secondary);
}

.timeline {
    position: relative;
    margin: var(--spacing-3xl) 0;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, var(--primary-color), var(--accent-color));
}

.timeline-item {
    display: flex;
    align-items: center;
    margin-bottom: var(--spacing-2xl);
    position: relative;
}

.timeline-item:nth-child(odd) {
    flex-direction: row-reverse;
}

.timeline-year {
    background: var(--primary-color);
    color: var(--text-light);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: 20px;
    font-weight: 600;
    min-width: 100px;
    text-align: center;
    position: relative;
    z-index: 2;
}

.timeline-content {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    padding: var(--spacing-lg);
    margin: 0 var(--spacing-lg);
    flex: 1;
    max-width: 300px;
}

.timeline-content h4 {
    margin-bottom: var(--spacing-sm);
    color: var(--accent-color);
}

.company-values {
    margin-top: var(--spacing-3xl);
}

.company-values h3 {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
    font-size: 2rem;
}

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

.value-item {
    text-align: center;
    padding: var(--spacing-xl);
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    transition: all var(--transition-normal);
}

.value-item:hover {
    transform: translateY(-4px);
    border-color: var(--secondary-color);
}

.value-icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-lg);
}

.value-item h4 {
    margin-bottom: var(--spacing-md);
    color: var(--secondary-color);
}

/* Contact Section */
.contact {
    background: rgba(255, 255, 255, 0.02);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--spacing-3xl);
    margin-top: var(--spacing-2xl);
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

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

.contact-icon {
    font-size: 2rem;
    color: var(--primary-color);
}

.contact-item h4 {
    margin-bottom: var(--spacing-sm);
    color: var(--primary-color);
}

.contact-item p {
    color: var(--text-secondary);
    margin: 0;
}

/* Form Styling */
.contact-form {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    padding: var(--spacing-2xl);
}

.form-group {
    position: relative;
    margin-bottom: var(--spacing-xl);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: var(--spacing-md);
    background: rgba(255, 255, 255, 0.05);
    border: 2px solid var(--glass-border);
    border-radius: 8px;
    color: var(--text-light);
    font-size: 1rem;
    transition: all var(--transition-normal);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
}

.form-group label {
    position: absolute;
    left: var(--spacing-md);
    top: var(--spacing-md);
    color: var(--text-secondary);
    transition: all var(--transition-normal);
    pointer-events: none;
}

.form-group input:focus + label,
.form-group textarea:focus + label,
.form-group input:not(:placeholder-shown) + label,
.form-group textarea:not(:placeholder-shown) + label {
    transform: translateY(-30px) scale(0.85);
    color: var(--primary-color);
    background: var(--background-dark);
    padding: 0 var(--spacing-xs);
}

.form-group select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='m6 8 4 4 4-4'/%3e%3c/svg%3e");
    background-position: right 12px center;
    background-repeat: no-repeat;
    background-size: 16px;
    padding-right: 40px;
}

.form-group select option {
    background: var(--background-dark);
    color: var(--text-light);
}

/* Footer */
.footer {
    background: rgba(0, 0, 0, 0.3);
    border-top: 1px solid var(--glass-border);
    padding: var(--spacing-2xl) 0;
    text-align: center;
}

.footer-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--text-light);
    font-weight: 700;
    font-size: 1.25rem;
}

.footer-text p {
    color: var(--text-secondary);
    margin: 0;
    font-size: 0.875rem;
}

/* Footer Filing (备案信息) */
.footer-filing {
    text-align: right;
}

.footer-filing p {
    margin: var(--spacing-xs) 0;
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.footer-filing a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color var(--transition-normal);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
}

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

.police-icon {
    width: 14px;
    height: 14px;
    vertical-align: middle;
    margin-right: 2px;
}

/* Responsive Design */
@media (max-width: 768px) {
    :root {
        --spacing-lg: 1rem;
        --spacing-xl: 1.5rem;
        --spacing-2xl: 2rem;
        --spacing-3xl: 2.5rem;
    }
    
    .hamburger {
        display: flex;
    }
    
    .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: var(--spacing-xl);
        transform: translateY(-100vh);
        opacity: 0;
        transition: all var(--transition-normal);
    }
    
    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
    }
    
    .nav-cta {
        display: none;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: var(--spacing-lg);
    }
    
    .hero-cta {
        flex-direction: column;
        align-items: center;
    }
    
    .products-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
    }
    
    .timeline::before {
        left: 20px;
    }
    
    .timeline-item {
        flex-direction: row !important;
        padding-left: 60px;
    }
    
    .timeline-year {
        position: absolute;
        left: 0;
        min-width: auto;
        width: 40px;
        height: 40px;
        display: flex;
        align-items: center;
        justify-content: center;
        border-radius: 50%;
        font-size: 0.875rem;
    }
    
    .timeline-content {
        margin: 0;
        margin-left: var(--spacing-lg);
    }
    
    .footer-content {
        flex-direction: column;
        gap: var(--spacing-lg);
    }
    
    .footer-filing {
        text-align: center;
        margin-top: var(--spacing-md);
    }
    
    .footer-filing p {
        font-size: 0.7rem;
        line-height: 1.4;
    }
    
    h1 { font-size: 2.5rem; }
    h2 { font-size: 2rem; }
    h3 { font-size: 1.5rem; }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-md);
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .position-grid,
    .products-grid,
    .solutions-grid,
    .highlights-grid,
    .values-grid {
        grid-template-columns: 1fr;
    }
    
    .product-card {
        padding: var(--spacing-lg);
    }
    
    .tech-items {
        grid-template-columns: 1fr;
    }
}