/* ===== 基础变量 ===== */
:root {
    /* 主色调 - 科技蓝绿 */
    --primary: #00f0ff;
    --primary-dark: #00b8c4;
    --primary-glow: rgba(0, 240, 255, 0.3);
    
    /* 辅助色 */
    --accent: #7b2fff;
    --accent-glow: rgba(123, 47, 255, 0.3);
    --success: #00ff88;
    --warning: #ffaa00;
    
    /* 背景色 */
    --bg-dark: #0a0e17;
    --bg-darker: #060a10;
    --bg-card: rgba(15, 25, 40, 0.8);
    --bg-card-hover: rgba(20, 35, 55, 0.9);
    
    /* 文字色 */
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.7);
    --text-muted: rgba(255, 255, 255, 0.4);
    
    /* 边框 */
    --border-color: rgba(0, 240, 255, 0.15);
    --border-glow: rgba(0, 240, 255, 0.4);
    
    /* 间距 */
    --section-padding: 120px;
    --container-width: 1200px;
    
    /* 字体 */
    --font-display: 'Orbitron', sans-serif;
    --font-body: 'Noto Sans SC', sans-serif;
    
    /* 动画 */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* ===== 基础重置 ===== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-body);
    background: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

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

ul {
    list-style: none;
}

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

/* ===== 粒子背景 ===== */
#particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    pointer-events: none;
}

/* ===== 容器 ===== */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== 导航栏 ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 20px 0;
    transition: all var(--transition-normal);
    background: transparent;
}

.navbar.scrolled {
    padding: 12px 0;
    background: rgba(10, 14, 23, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
}

.nav-container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.logo-icon {
    font-size: 2rem;
    color: var(--primary);
    text-shadow: 0 0 20px var(--primary-glow);
    animation: pulse-glow 2s ease-in-out infinite;
}

@keyframes pulse-glow {
    0%, 100% { text-shadow: 0 0 20px var(--primary-glow); }
    50% { text-shadow: 0 0 40px var(--primary), 0 0 60px var(--primary-glow); }
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 28px;
}

.nav-link {
    position: relative;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    padding: 8px 0;
    transition: color var(--transition-fast);
}

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

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

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

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 6px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.mobile-menu-btn span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: all var(--transition-fast);
}

/* ===== Hero Section ===== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 120px 24px 80px;
    max-width: var(--container-width);
    margin: 0 auto;
    position: relative;
    gap: 60px;
}

.hero-content {
    flex: 1;
    max-width: 680px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 10px 20px;
    background: rgba(0, 240, 255, 0.1);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    font-size: 0.875rem;
    color: var(--primary);
    margin-bottom: 32px;
    animation: fadeInUp 0.8s ease forwards;
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: var(--primary);
    border-radius: 50%;
    animation: blink 1.5s ease-in-out infinite;
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
}

.hero-title {
    font-family: var(--font-display);
    font-size: 4rem;
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: 24px;
    animation: fadeInUp 0.8s ease 0.1s forwards;
    opacity: 0;
}

.title-line {
    display: block;
}

.gradient-text {
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 50%, var(--primary) 100%);
    background-size: 200% auto;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradient-shift 3s ease infinite;
}

@keyframes gradient-shift {
    0%, 100% { background-position: 0% center; }
    50% { background-position: 100% center; }
}

.hero-desc {
    font-size: 1.0625rem;
    color: var(--text-secondary);
    line-height: 1.9;
    margin-bottom: 40px;
    animation: fadeInUp 0.8s ease 0.2s forwards;
    opacity: 0;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    margin-bottom: 60px;
    animation: fadeInUp 0.8s ease 0.3s forwards;
    opacity: 0;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 16px 32px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 8px;
    transition: all var(--transition-normal);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary));
    color: var(--bg-dark);
    box-shadow: 0 4px 20px var(--primary-glow);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px var(--primary-glow);
}

.btn-arrow {
    width: 20px;
    height: 20px;
    transition: transform var(--transition-fast);
}

.btn-primary:hover .btn-arrow {
    transform: translateX(5px);
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--primary);
    color: var(--primary);
}

.hero-stats {
    display: flex;
    align-items: center;
    gap: 32px;
    animation: fadeInUp 0.8s ease 0.4s forwards;
    opacity: 0;
}

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

.stat-number {
    font-family: var(--font-display);
    font-size: 2.25rem;
    font-weight: 700;
    color: var(--primary);
    display: inline;
}

.stat-plus {
    font-family: var(--font-display);
    font-size: 1.25rem;
    color: var(--primary);
}

.stat-label {
    display: block;
    font-size: 0.8125rem;
    color: var(--text-muted);
    margin-top: 4px;
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--border-color);
}

/* Hero Visual */
.hero-visual {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    animation: fadeIn 1s ease 0.5s forwards;
    opacity: 0;
}

.tech-circle {
    position: relative;
    width: 400px;
    height: 400px;
}

.circle-ring {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    border-radius: 50%;
    border: 1px solid var(--border-color);
}

.ring-1 {
    width: 100%;
    height: 100%;
    animation: rotate 20s linear infinite;
}

.ring-2 {
    width: 75%;
    height: 75%;
    animation: rotate 15s linear infinite reverse;
}

.ring-3 {
    width: 50%;
    height: 50%;
    animation: rotate 10s linear infinite;
}

@keyframes rotate {
    from { transform: translate(-50%, -50%) rotate(0deg); }
    to { transform: translate(-50%, -50%) rotate(360deg); }
}

.circle-core {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100px;
    height: 100px;
    background: radial-gradient(circle, var(--primary-glow) 0%, transparent 70%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.core-icon {
    font-size: 3rem;
    color: var(--primary);
    text-shadow: 0 0 30px var(--primary);
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

.orbit-dot {
    position: absolute;
    width: 12px;
    height: 12px;
    background: var(--primary);
    border-radius: 50%;
    box-shadow: 0 0 20px var(--primary);
}

.dot-1 {
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    animation: orbit1 20s linear infinite;
}

.dot-2 {
    top: 50%;
    right: 12.5%;
    transform: translateY(-50%);
    animation: orbit2 15s linear infinite reverse;
}

.dot-3 {
    bottom: 25%;
    left: 25%;
    animation: orbit3 10s linear infinite;
}

@keyframes orbit1 {
    from { transform: translateX(-50%) rotate(0deg) translateY(-200px) rotate(0deg); }
    to { transform: translateX(-50%) rotate(360deg) translateY(-200px) rotate(-360deg); }
}

@keyframes orbit2 {
    from { transform: translateY(-50%) rotate(0deg) translateX(150px) rotate(0deg); }
    to { transform: translateY(-50%) rotate(360deg) translateX(150px) rotate(-360deg); }
}

@keyframes orbit3 {
    from { transform: rotate(0deg) translateY(-100px) rotate(0deg); }
    to { transform: rotate(360deg) translateY(-100px) rotate(-360deg); }
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    animation: fadeIn 1s ease 1s forwards;
    opacity: 0;
}

.scroll-text {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 2px;
}

.scroll-line {
    width: 1px;
    height: 60px;
    background: linear-gradient(to bottom, var(--primary), transparent);
    animation: scroll-bounce 2s ease-in-out infinite;
}

@keyframes scroll-bounce {
    0%, 100% { transform: scaleY(1); opacity: 1; }
    50% { transform: scaleY(0.5); opacity: 0.5; }
}

/* ===== Section Styles ===== */
section {
    padding: var(--section-padding) 0;
    position: relative;
}

.section-header {
    text-align: center;
    margin-bottom: 80px;
}

.section-tag {
    display: inline-block;
    font-family: var(--font-display);
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--primary);
    letter-spacing: 3px;
    margin-bottom: 16px;
}

.section-title {
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 16px;
}

.section-subtitle {
    font-size: 1.0625rem;
    color: var(--text-secondary);
    margin-bottom: 20px;
}

.section-line {
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    margin: 0 auto;
    border-radius: 2px;
}

/* ===== About Section ===== */
.about {
    background: linear-gradient(180deg, var(--bg-dark) 0%, var(--bg-darker) 100%);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: start;
}

.about-intro h3 {
    font-size: 1.75rem;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.about-intro p {
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.9;
    margin-bottom: 20px;
}

.about-intro p:last-child {
    margin-bottom: 40px;
}

.about-intro strong {
    color: var(--primary);
}

/* Mission Items */
.about-mission {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.mission-item {
    display: flex;
    gap: 20px;
    padding: 24px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    transition: all var(--transition-normal);
}

.mission-item:hover {
    background: var(--bg-card-hover);
    border-color: var(--primary);
    transform: translateX(10px);
}

.mission-icon {
    width: 52px;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 240, 255, 0.1);
    border-radius: 12px;
    flex-shrink: 0;
}

.mission-icon svg {
    width: 26px;
    height: 26px;
    color: var(--primary);
}

.mission-content h4 {
    font-size: 1.125rem;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.mission-content p {
    font-size: 0.9375rem;
    color: var(--text-muted);
    line-height: 1.6;
    margin-bottom: 0;
}

/* Code Window */
.about-visual {
    perspective: 1000px;
}

.code-window {
    background: #1a1f2e;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    transform: rotateY(-5deg) rotateX(5deg);
    transition: transform var(--transition-slow);
    margin-bottom: 24px;
}

.code-window:hover {
    transform: rotateY(0) rotateX(0);
}

.window-header {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 12px 16px;
    background: #0d1117;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.window-dots {
    display: flex;
    gap: 8px;
}

.window-dots .dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.dot.red { background: #ff5f56; }
.dot.yellow { background: #ffbd2e; }
.dot.green { background: #27ca40; }

.window-title {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.window-content {
    padding: 24px;
    position: relative;
}

.window-content pre {
    margin: 0;
    font-family: 'Fira Code', 'Consolas', monospace;
    font-size: 0.8125rem;
    line-height: 1.7;
}

.code-keyword { color: #ff79c6; }
.code-var { color: #50fa7b; }
.code-prop { color: #8be9fd; }
.code-string { color: #f1fa8c; }
.code-number { color: #bd93f9; }

.code-cursor {
    position: absolute;
    bottom: 24px;
    right: 24px;
    width: 8px;
    height: 20px;
    background: var(--primary);
    animation: blink 1s step-end infinite;
}

/* Tech Badges */
.tech-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.tech-badge {
    padding: 8px 16px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    font-size: 0.8125rem;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.tech-badge:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: rgba(0, 240, 255, 0.1);
}

/* ===== Services Section ===== */
.services {
    background: var(--bg-dark);
    position: relative;
}

.services::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border-color), transparent);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.service-item {
    padding: 40px 30px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    text-align: center;
    transition: all var(--transition-normal);
}

.service-item:hover {
    transform: translateY(-10px);
    border-color: var(--primary);
    background: var(--bg-card-hover);
}

.service-icon {
    width: 72px;
    height: 72px;
    margin: 0 auto 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 240, 255, 0.1);
    border-radius: 16px;
}

.service-icon svg {
    width: 40px;
    height: 40px;
    color: var(--primary);
}

.service-item h4 {
    font-size: 1.25rem;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.service-item p {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ===== Products Section ===== */
.products {
    background: var(--bg-darker);
    position: relative;
}

.products::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border-color), transparent);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.product-card {
    position: relative;
    padding: 40px 30px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    transition: all var(--transition-normal);
    overflow: hidden;
}

.product-card:hover {
    transform: translateY(-10px);
    border-color: var(--primary);
}

.product-card:hover .card-glow {
    opacity: 1;
}

.card-glow {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 100%;
    background: radial-gradient(ellipse at top, var(--primary-glow) 0%, transparent 60%);
    opacity: 0;
    transition: opacity var(--transition-normal);
    pointer-events: none;
}

.product-card.featured {
    border-color: var(--accent);
    background: linear-gradient(180deg, rgba(123, 47, 255, 0.1) 0%, var(--bg-card) 50%);
}

.product-card.featured .card-glow {
    background: radial-gradient(ellipse at top, var(--accent-glow) 0%, transparent 60%);
}

.featured-badge {
    position: absolute;
    top: 20px;
    right: 20px;
    padding: 6px 14px;
    background: linear-gradient(135deg, var(--accent), var(--primary));
    color: var(--bg-dark);
    font-size: 0.75rem;
    font-weight: 700;
    border-radius: 20px;
}

.card-icon {
    width: 72px;
    height: 72px;
    margin-bottom: 24px;
}

.card-icon svg {
    width: 100%;
    height: 100%;
    color: var(--primary);
}

.product-card.featured .card-icon svg {
    color: var(--accent);
}

.card-title {
    font-size: 1.375rem;
    font-weight: 700;
    margin-bottom: 16px;
}

.card-desc {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 24px;
}

.card-features-detail h5 {
    font-size: 0.875rem;
    color: var(--primary);
    margin-bottom: 12px;
    margin-top: 20px;
}

.card-features-detail h5:first-child {
    margin-top: 0;
}

.card-features {
    display: grid;
    grid-template-columns: 1fr;
    gap: 10px;
    margin-bottom: 0;
}

.card-features li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

.check-icon {
    color: var(--success);
    font-weight: bold;
    flex-shrink: 0;
}

.card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 20px;
    margin-top: 24px;
    border-top: 1px solid var(--border-color);
}

.card-tag {
    font-size: 0.75rem;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.card-version {
    font-size: 0.75rem;
    color: var(--text-muted);
    padding: 4px 10px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 4px;
}

/* ===== Advantages Section ===== */
.advantages {
    background: var(--bg-dark);
    position: relative;
}

.advantages::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border-color), transparent);
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.advantage-card {
    position: relative;
    padding: 40px 30px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    transition: all var(--transition-normal);
    overflow: hidden;
}

.advantage-card:hover {
    transform: translateY(-10px);
    border-color: var(--primary);
    background: var(--bg-card-hover);
}

.advantage-number {
    position: absolute;
    top: 20px;
    right: 20px;
    font-family: var(--font-display);
    font-size: 3rem;
    font-weight: 900;
    color: rgba(0, 240, 255, 0.1);
    line-height: 1;
}

.advantage-icon {
    width: 64px;
    height: 64px;
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 240, 255, 0.1);
    border-radius: 16px;
}

.advantage-icon svg {
    width: 32px;
    height: 32px;
    color: var(--primary);
}

.advantage-card h4 {
    font-size: 1.25rem;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.advantage-card p {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ===== Process Section ===== */
.process {
    background: var(--bg-darker);
    position: relative;
}

.process::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border-color), transparent);
}

.process-timeline {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    position: relative;
}

.process-step {
    position: relative;
    text-align: center;
}

.step-number {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 700;
    color: var(--bg-dark);
    background: linear-gradient(135deg, var(--primary), var(--accent));
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
    position: relative;
    z-index: 2;
}

.step-content {
    padding: 30px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    transition: all var(--transition-normal);
}

.step-content:hover {
    border-color: var(--primary);
    transform: translateY(-5px);
}

.step-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 240, 255, 0.1);
    border-radius: 12px;
}

.step-icon svg {
    width: 28px;
    height: 28px;
    color: var(--primary);
}

.step-content h4 {
    font-size: 1.125rem;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.step-content p {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 16px;
}

.step-duration {
    display: inline-block;
    padding: 6px 14px;
    background: rgba(0, 240, 255, 0.1);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    font-size: 0.75rem;
    color: var(--primary);
}

/* ===== Contact Section ===== */
.contact {
    background: linear-gradient(180deg, var(--bg-dark) 0%, var(--bg-darker) 100%);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: start;
}

.contact-intro {
    margin-bottom: 32px;
}

.contact-intro h3 {
    font-size: 1.5rem;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.contact-intro p {
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.8;
}

.info-cards {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.info-card {
    display: flex;
    gap: 20px;
    padding: 24px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    transition: all var(--transition-normal);
}

.info-card:hover {
    border-color: var(--primary);
    transform: translateX(10px);
}

.info-icon {
    width: 52px;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 240, 255, 0.1);
    border-radius: 12px;
    flex-shrink: 0;
}

.info-icon svg {
    width: 26px;
    height: 26px;
    color: var(--primary);
}

.info-content h4 {
    font-size: 0.9375rem;
    margin-bottom: 6px;
    color: var(--text-muted);
}

.info-content p {
    font-size: 1rem;
    color: var(--text-primary);
}

.info-content a {
    color: var(--primary);
}

.info-content a:hover {
    text-decoration: underline;
}

/* Map Container */
.contact-map {
    height: 100%;
    min-height: 450px;
}

.map-container {
    position: relative;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(0, 240, 255, 0.05) 0%, rgba(123, 47, 255, 0.05) 100%);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    overflow: hidden;
}

.map-grid {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
}

.grid-line {
    position: absolute;
    background: var(--border-color);
}

.grid-line.horizontal {
    width: 100%;
    height: 1px;
}

.grid-line.horizontal:nth-child(1) { top: 20%; }
.grid-line.horizontal:nth-child(2) { top: 40%; }
.grid-line.horizontal:nth-child(3) { top: 60%; }
.grid-line.horizontal:nth-child(4) { top: 80%; }

.grid-line.vertical {
    width: 1px;
    height: 100%;
}

.grid-line.vertical:nth-child(5) { left: 20%; }
.grid-line.vertical:nth-child(6) { left: 40%; }
.grid-line.vertical:nth-child(7) { left: 60%; }
.grid-line.vertical:nth-child(8) { left: 80%; }

.map-overlay {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    z-index: 2;
}

.map-pin {
    position: relative;
    width: 56px;
    height: 56px;
    margin: 0 auto 20px;
}

.map-pin svg {
    width: 100%;
    height: 100%;
    color: var(--primary);
    filter: drop-shadow(0 0 15px var(--primary-glow));
}

.pin-pulse {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100px;
    height: 100px;
    border: 2px solid var(--primary);
    border-radius: 50%;
    animation: pin-pulse 2s ease-out infinite;
}

@keyframes pin-pulse {
    0% {
        transform: translate(-50%, -50%) scale(0.5);
        opacity: 1;
    }
    100% {
        transform: translate(-50%, -50%) scale(1.5);
        opacity: 0;
    }
}

.map-info {
    background: var(--bg-card);
    padding: 16px 28px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

.map-label {
    font-size: 1.125rem;
    color: var(--text-primary);
    font-weight: 600;
    margin-bottom: 4px;
}

.map-address {
    font-size: 0.875rem;
    color: var(--text-muted);
}

.map-decoration {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
}

.decoration-circle {
    position: absolute;
    border: 1px solid var(--border-color);
    border-radius: 50%;
    opacity: 0.5;
}

.decoration-circle.c1 {
    width: 200px;
    height: 200px;
    top: 10%;
    left: 5%;
}

.decoration-circle.c2 {
    width: 150px;
    height: 150px;
    bottom: 15%;
    right: 10%;
}

.decoration-circle.c3 {
    width: 100px;
    height: 100px;
    top: 60%;
    left: 15%;
}

/* ===== Footer ===== */
.footer {
    position: relative;
    padding: 80px 0 30px;
    background: var(--bg-darker);
    border-top: 1px solid var(--border-color);
}

.footer-glow {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 600px;
    height: 200px;
    background: radial-gradient(ellipse, var(--primary-glow) 0%, transparent 70%);
    opacity: 0.3;
    pointer-events: none;
}

.footer-main {
    display: flex;
    justify-content: space-between;
    gap: 60px;
    margin-bottom: 60px;
}

.footer-brand {
    max-width: 400px;
}

.footer-logo {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 20px;
}

.footer-desc {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 24px;
}

.footer-contact {
    font-size: 0.875rem;
    color: var(--text-muted);
    line-height: 1.8;
}

.footer-contact strong {
    color: var(--text-secondary);
}

.footer-links {
    display: flex;
    gap: 60px;
}

.link-group h5 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.link-group ul {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.link-group a {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
    display: inline-block;
}

.link-group a:hover {
    color: var(--primary);
    transform: translateX(5px);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 30px;
    border-top: 1px solid var(--border-color);
    flex-wrap: wrap;
    gap: 20px;
}

.copyright p {
    font-size: 0.875rem;
    color: var(--text-muted);
}

.beian {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.8125rem;
    color: var(--text-muted);
}

.beian a {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--text-muted);
    transition: color var(--transition-fast);
}

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

.beian .divider {
    color: var(--border-color);
}

.police-icon {
    width: 14px;
    height: 14px;
}

/* ===== Animations ===== */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

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

/* ===== Responsive ===== */
@media (max-width: 1200px) {
    .nav-links {
        gap: 20px;
    }
    
    .nav-link {
        font-size: 0.85rem;
    }
}

@media (max-width: 1024px) {
    :root {
        --section-padding: 80px;
    }
    
    .hero {
        flex-direction: column;
        text-align: center;
        padding-top: 140px;
    }
    
    .hero-content {
        max-width: 100%;
    }
    
    .hero-title {
        font-size: 3rem;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .hero-stats {
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .hero-visual {
        display: none;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: 60px;
    }
    
    .about-visual {
        order: -1;
    }
    
    .code-window {
        transform: none;
    }
    
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .products-grid {
        grid-template-columns: 1fr;
        max-width: 600px;
        margin: 0 auto;
    }
    
    .advantages-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .process-timeline {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .contact-content {
        grid-template-columns: 1fr;
    }
    
    .contact-map {
        min-height: 350px;
    }
    
    .footer-main {
        flex-direction: column;
        gap: 40px;
    }
    
    .footer-links {
        flex-wrap: wrap;
        gap: 40px;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        background: rgba(10, 14, 23, 0.98);
        backdrop-filter: blur(20px);
        padding: 20px;
        gap: 0;
        border-bottom: 1px solid var(--border-color);
        max-height: 70vh;
        overflow-y: auto;
    }
    
    .nav-links.active {
        display: flex;
    }
    
    .nav-link {
        padding: 16px;
        border-bottom: 1px solid var(--border-color);
        font-size: 1rem;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .mobile-menu-btn.active span:nth-child(1) {
        transform: rotate(45deg) translate(6px, 6px);
    }
    
    .mobile-menu-btn.active span:nth-child(2) {
        opacity: 0;
    }
    
    .mobile-menu-btn.active span:nth-child(3) {
        transform: rotate(-45deg) translate(6px, -6px);
    }
    
    .hero-title {
        font-size: 2.25rem;
    }
    
    .hero-desc br {
        display: none;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 24px;
    }
    
    .stat-divider {
        width: 60px;
        height: 1px;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .advantages-grid {
        grid-template-columns: 1fr;
    }
    
    .process-timeline {
        grid-template-columns: 1fr;
    }
    
    .mission-item {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
    
    .beian {
        flex-wrap: wrap;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 1.875rem;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
    
    .info-card {
        flex-direction: column;
        text-align: center;
    }
    
    .tech-badges {
        justify-content: center;
    }
}