/* 及配云官网样式 - 科技感与专业性设计 */

:root {
    /* 色彩系统 */
    --primary-blue: #1A3A7E;
    --secondary-orange: #FF6B35;
    --neutral-gray: #F0F4F8;
    --text-dark: #2C3E50;
    --text-light: #7F8C8D;
    --background-dark: #0F1419;
    --accent-cyan: #00D4FF;
    --gradient-primary: linear-gradient(135deg, #1A3A7E 0%, #2980B9 100%);
    --gradient-secondary: linear-gradient(135deg, #FF6B35 0%, #E74C3C 100%);
    
    /* 字体系统 */
    --font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    --font-mono: 'Fira Code', 'Monaco', 'Consolas', monospace;
    
    /* 间距系统 */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-xxl: 4rem;
    
    /* 阴影系统 */
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.15);
    --shadow-lg: 0 8px 24px rgba(0,0,0,0.2);
    --shadow-xl: 0 16px 48px rgba(0,0,0,0.25);
    
    /* 动画系统 */
    --transition-fast: 0.2s ease;
    --transition-medium: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Z轴层级 */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal: 1040;
    --z-popover: 1060;
    --z-tooltip: 1070;
}

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

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

body {
    font-family: var(--font-primary);
    line-height: 1.6;
    color: var(--text-dark);
    background-color: #ffffff;
    overflow-x: hidden;
}

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

/* 导航栏样式 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(26, 58, 126, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    z-index: var(--z-fixed);
    transition: all var(--transition-medium);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--spacing-md);
    height: 70px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    cursor: pointer;
    transition: var(--transition-fast);
    padding: var(--spacing-xs);
    border-radius: 8px;
}

.nav-logo:hover,
.nav-logo:focus {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-1px);
    outline: 2px solid var(--secondary-orange);
    outline-offset: 2px;
}

.nav-logo img {
    width: 144px;
    height: 44px;
    transition: var(--transition-fast);
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
    animation: logoFadeIn 0.6s ease-out;
}

@keyframes logoFadeIn {
    from {
        opacity: 0;
        transform: translateY(-10px) scale(0.9);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.nav-logo:hover img {
    transform: scale(1.05);
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.2));
}

.logo-text {
    font-size: 1.6rem;
    font-weight: 800;
    color: white;
    letter-spacing: 0.5px;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
    transition: var(--transition-fast);
}

.nav-logo:hover .logo-text {
    color: var(--secondary-orange);
    text-shadow: 0 2px 4px rgba(255, 107, 53, 0.3);
}

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

.nav-menu a {
    color: rgba(255, 255, 255, 0.9);
    text-decoration: none;
    transition: var(--transition-fast);
    position: relative;
}

.nav-menu a:hover {
    color: var(--secondary-orange);
}

.nav-menu a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -5px;
    left: 50%;
    background: var(--secondary-orange);
    transition: var(--transition-fast);
    transform: translateX(-50%);
}

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

.nav-cta a {
    background: var(--gradient-secondary);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: 25px;
    font-weight: 600;
    color: white !important;
}

.nav-cta a::after {
    display: none;
}

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

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: white;
    margin: 3px 0;
    transition: var(--transition-fast);
}

/* Hero区域样式 */
.hero-section {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: var(--gradient-primary);
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1;
}

.data-particles {
    position: absolute;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="20" cy="20" r="1" fill="%2300D4FF" opacity="0.6"><animate attributeName="opacity" values="0.6;1;0.6" dur="2s" repeatCount="indefinite"/></circle><circle cx="80" cy="40" r="1" fill="%23FF6B35" opacity="0.4"><animate attributeName="opacity" values="0.4;0.8;0.4" dur="3s" repeatCount="indefinite"/></circle><circle cx="40" cy="80" r="1" fill="%2300D4FF" opacity="0.5"><animate attributeName="opacity" values="0.5;1;0.5" dur="2.5s" repeatCount="indefinite"/></circle></svg>') repeat;
    animation: float 20s infinite linear;
}

.network-grid {
    position: absolute;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="%23ffffff" stroke-width="0.5" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.3;
}

@keyframes float {
    0% { transform: translateY(0) rotate(0deg); }
    100% { transform: translateY(-20px) rotate(360deg); }
}

.hero-container {
    position: relative;
    z-index: 2;
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-xxl) var(--spacing-md);
}

.hero-content {
    max-width: 800px;
    text-align: center;
    margin: 0 auto;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    color: white;
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
}

.title-main {
    display: block;
}

.title-highlight {
    display: block;
    background: linear-gradient(45deg, var(--secondary-orange), var(--accent-cyan));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.title-sub {
    display: block;
    font-size: 0.7em;
    opacity: 0.9;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--spacing-xl);
    line-height: 1.6;
}

/* VIN查询区域 */
.vin-search-container {
    margin: var(--spacing-xl) 0;
}

.search-box {
    display: flex;
    max-width: 600px;
    margin: 0 auto var(--spacing-md);
    background: rgba(255, 255, 255, 0.95);
    border-radius: 50px;
    padding: var(--spacing-xs);
    box-shadow: var(--shadow-lg);
    backdrop-filter: blur(10px);
}

.search-box input {
    flex: 1;
    border: none;
    background: transparent;
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: 1.1rem;
    outline: none;
    color: var(--text-dark);
}

.search-box input::placeholder {
    color: var(--text-light);
}

.search-btn {
    background: var(--gradient-secondary);
    border: none;
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: 45px;
    color: white;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    transition: var(--transition-fast);
}

.search-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.search-icon {
    width: 20px;
    height: 20px;
    fill: currentColor;
}

.search-suggestions {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 15px;
    margin-top: var(--spacing-xs);
    backdrop-filter: blur(10px);
    display: none;
}

/* 实时数据展示 */
.real-time-stats {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xl);
    margin-top: var(--spacing-xl);
}

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

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--accent-cyan);
    text-shadow: 0 0 20px rgba(0, 212, 255, 0.5);
}

.stat-label {
    font-size: 0.9rem;
    opacity: 0.8;
}

/* 动态交易看板 */
.trading-ticker {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(0, 0, 0, 0.8);
    color: white;
    padding: var(--spacing-sm) 0;
    overflow: hidden;
    z-index: 2;
}

.ticker-content {
    display: flex;
    gap: var(--spacing-xl);
    animation: ticker 30s linear infinite;
    white-space: nowrap;
}

@keyframes ticker {
    0% { transform: translateX(100%); }
    100% { transform: translateX(-100%); }
}

/* 核心价值区域 */
.value-section {
    padding: var(--spacing-xxl) 0;
    background: var(--neutral-gray);
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: var(--spacing-xl);
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: var(--gradient-secondary);
    border-radius: 2px;
}

.value-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.value-card {
    background: white;
    padding: var(--spacing-xl);
    border-radius: 20px;
    box-shadow: var(--shadow-md);
    text-align: center;
    position: relative;
    transition: var(--transition-medium);
    overflow: hidden;
}

.value-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
}

.value-card::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-slow);
}

.value-card:hover::before {
    left: 100%;
}

.value-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-md);
    position: relative;
}

.icon-3d-engine,
.icon-trading-hub,
.icon-finance {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    animation: pulse 3s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

.value-card h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: var(--spacing-md);
}

.value-stats p {
    margin: var(--spacing-xs) 0;
    color: var(--text-light);
}

.value-stats strong {
    color: var(--secondary-orange);
    font-weight: 700;
}

/* 数据流动画 */
.data-flow {
    width: 100%;
    height: 60px;
    margin-top: var(--spacing-md);
}

.flow-path {
    fill: none;
    stroke: var(--accent-cyan);
    stroke-width: 2;
    opacity: 0.6;
}

.flow-dot {
    fill: var(--secondary-orange);
    animation: flow-move 2s ease-in-out infinite;
}

@keyframes flow-move {
    0% { transform: translateX(10px); }
    100% { transform: translateX(190px); }
}

/* 解决方案区域 */
.solutions-section {
    padding: var(--spacing-xxl) 0;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
}

.solutions-tabs {
    max-width: 1000px;
    margin: 0 auto;
}

.tab-buttons {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
}

.tab-btn {
    padding: var(--spacing-md) var(--spacing-lg);
    border: 2px solid var(--primary-blue);
    background: transparent;
    color: var(--primary-blue);
    border-radius: 30px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-fast);
}

.tab-btn.active,
.tab-btn:hover {
    background: var(--primary-blue);
    color: white;
}

.tab-content {
    position: relative;
}

.tab-panel {
    display: none;
    background: white;
    border-radius: 20px;
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-lg);
}

.tab-panel.active {
    display: block;
    animation: fadeInUp 0.5s ease;
}

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

.solution-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
}

.solution-text h3 {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: var(--spacing-md);
}

.feature-list {
    list-style: none;
    margin: var(--spacing-md) 0;
}

.feature-list li {
    padding: var(--spacing-xs) 0;
    position: relative;
    padding-left: var(--spacing-lg);
    color: var(--text-light);
}

.feature-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--secondary-orange);
    font-weight: bold;
}

.solution-stats {
    display: flex;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-md);
}

.stat {
    text-align: center;
}

.stat-value {
    display: block;
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary-blue);
}

.stat-desc {
    font-size: 0.9rem;
    color: var(--text-light);
}

/* 产品功能区域 */
.products-section {
    padding: var(--spacing-xxl) 0;
    background: white;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.product-card {
    background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
    border: 1px solid #e9ecef;
    border-radius: 20px;
    padding: var(--spacing-xl);
    transition: var(--transition-medium);
    position: relative;
    overflow: hidden;
}

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

.product-header h3 {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--primary-blue);
    margin-bottom: var(--spacing-xs);
}

.product-subtitle {
    color: var(--text-light);
    font-size: 0.9rem;
    margin-bottom: var(--spacing-md);
}

.product-features {
    margin: var(--spacing-md) 0;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-xs) 0;
    color: var(--text-dark);
}

.feature-icon {
    font-size: 1.2rem;
}

.product-impact {
    margin-top: var(--spacing-md);
    padding: var(--spacing-sm);
    background: rgba(255, 107, 53, 0.1);
    border-radius: 10px;
    color: var(--text-dark);
    font-size: 0.9rem;
    text-align: center;
}

.product-impact strong {
    color: var(--secondary-orange);
    font-weight: 700;
}

/* VIN查询CTA容器 */
.vin-cta-container {
    margin: var(--spacing-xl) 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
}

/* VIN查询按钮样式 */
.vin-search-btn {
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(20px);
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-radius: 20px;
    padding: var(--spacing-md) var(--spacing-lg);
    color: white;
    cursor: pointer;
    transition: all var(--transition-medium);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    min-width: 350px;
    position: relative;
    overflow: hidden;
}

.vin-search-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

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

.vin-search-btn:hover {
    transform: translateY(-3px);
    border-color: var(--secondary-orange);
    background: rgba(255, 107, 53, 0.2);
    box-shadow: 0 8px 32px rgba(255, 107, 53, 0.3);
}

.btn-icon {
    width: 48px;
    height: 48px;
    background: var(--gradient-secondary);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.btn-content {
    flex: 1;
    text-align: left;
}

.btn-title {
    display: block;
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 4px;
}

.btn-subtitle {
    display: block;
    font-size: 0.9rem;
    opacity: 0.8;
}

.btn-arrow {
    opacity: 0.6;
    transition: all var(--transition-fast);
}

.vin-search-btn:hover .btn-arrow {
    opacity: 1;
    transform: translateX(4px);
}

/* 功能标签 */
.vin-features {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
    justify-content: center;
}

.feature-tag {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 25px;
    padding: var(--spacing-xs) var(--spacing-md);
    color: white;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    transition: all var(--transition-fast);
}

.feature-tag:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

.tag-icon {
    font-size: 1rem;
}

/* 二维码按钮样式 */
.qr-btn {
    background: var(--gradient-secondary);
    color: white;
    border: none;
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: 20px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-fast);
    font-size: 0.9rem;
}

.qr-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(255, 107, 53, 0.3);
}

/* 二维码弹窗样式 */
.qr-modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(5px);
    animation: modalFadeIn 0.3s ease-out;
}

@keyframes modalFadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.qr-modal-content {
    background: white;
    margin: 10% auto;
    padding: 0;
    border-radius: 16px;
    width: 90%;
    max-width: 400px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
    animation: modalSlideIn 0.3s ease-out;
    overflow: hidden;
}

@keyframes modalSlideIn {
    from {
        transform: translateY(-50px) scale(0.9);
        opacity: 0;
    }
    to {
        transform: translateY(0) scale(1);
        opacity: 1;
    }
}

.qr-modal-header {
    background: var(--gradient-primary);
    color: white;
    padding: var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.qr-modal-header h3 {
    margin: 0;
    font-size: 1.2rem;
    font-weight: 600;
}

.qr-close {
    background: none;
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: var(--transition-fast);
}

.qr-close:hover {
    background: rgba(255, 255, 255, 0.2);
}

.qr-modal-body {
    padding: var(--spacing-lg);
    text-align: center;
}

.qr-code-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
}

.qr-image {
    width: 200px;
    height: 200px;
    border: 2px solid #f0f0f0;
    border-radius: 12px;
    padding: var(--spacing-sm);
    background: white;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

/* Hero Actions - 微信小程序按钮 */
.hero-actions {
    margin-top: var(--spacing-lg);
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
}

.wechat-mini-btn {
    background: var(--gradient-secondary);
    color: white;
    border: none;
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: 50px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    transition: all var(--transition-medium);
    box-shadow: var(--shadow-md);
    position: relative;
    overflow: hidden;
}

.wechat-mini-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    background: linear-gradient(135deg, #E74C3C 0%, #FF6B35 100%);
}

.wechat-mini-btn .btn-icon {
    font-size: 1.3rem;
    display: flex;
    align-items: center;
}

.wechat-mini-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s;
}

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

/* 微信小程序二维码模态框特色样式 */
.qr-features {
    margin-top: var(--spacing-md);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    text-align: left;
    background: #f8f9fa;
    padding: var(--spacing-md);
    border-radius: 8px;
    border-left: 4px solid var(--secondary-orange);
}

.qr-features .feature-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 0.95rem;
    color: var(--text-dark);
}

.qr-features .feature-dot {
    color: var(--secondary-orange);
    font-weight: bold;
    font-size: 1.2rem;
}

.qr-tip {
    color: var(--text-dark);
    font-weight: 600;
    font-size: 1.1rem;
    margin: 0;
}

.qr-desc {
    color: var(--text-light);
    font-size: 0.95rem;
    margin: 0;
}

.qr-tip {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--primary-blue);
    margin: 0;
}

.qr-desc {
    font-size: 0.9rem;
    color: #666;
    margin: 0;
}

/* 生态系统区域 */
.ecosystem-section {
    padding: var(--spacing-xxl) 0;
    background: var(--neutral-gray);
}

.partners-wall {
    margin-bottom: var(--spacing-xl);
}

.partners-wall h3 {
    text-align: center;
    font-size: 1.5rem;
    color: var(--text-dark);
    margin-bottom: var(--spacing-lg);
}

.partners-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    max-width: 800px;
    margin: 0 auto;
}

.partner-logo {
    background: white;
    padding: var(--spacing-lg);
    border-radius: 15px;
    text-align: center;
    transition: var(--transition-medium);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.partner-logo:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-md);
}

.partner-logo img {
    max-width: 100px;
    max-height: 60px;
    filter: grayscale(100%);
    transition: var(--transition-medium);
}

.partner-logo:hover img {
    filter: grayscale(0%);
}

/* 生态网络图 */
.ecosystem-network {
    position: relative;
    height: 400px;
    background: radial-gradient(circle at center, rgba(26, 58, 126, 0.1) 0%, transparent 70%);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.network-center {
    position: relative;
    z-index: 3;
}

.center-node {
    width: 120px;
    height: 120px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 700;
    font-size: 1.2rem;
    box-shadow: var(--shadow-lg);
    animation: rotate 20s linear infinite;
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.network-layer {
    position: absolute;
    text-align: center;
    background: white;
    padding: var(--spacing-md);
    border-radius: 15px;
    box-shadow: var(--shadow-md);
    animation: float 6s ease-in-out infinite;
}

.suppliers {
    top: 20%;
    left: 10%;
    animation-delay: 0s;
}

.dealers {
    top: 20%;
    right: 10%;
    animation-delay: 2s;
}

.repair-shops {
    bottom: 20%;
    left: 50%;
    transform: translateX(-50%);
    animation-delay: 4s;
}

.layer-title {
    font-weight: 700;
    color: var(--primary-blue);
    margin-bottom: var(--spacing-xs);
}

.node-count {
    font-size: 0.9rem;
    color: var(--text-light);
}

/* 客户证言区域 */
.testimonials-section {
    padding: var(--spacing-xxl) 0;
    background: white;
}

.testimonial-card {
    max-width: 800px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
    background: var(--neutral-gray);
    padding: var(--spacing-xl);
    border-radius: 20px;
}

.testimonial-video {
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.testimonial-video video {
    width: 100%;
    height: auto;
}

.testimonial-quote {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: var(--spacing-md);
    position: relative;
}

.testimonial-quote::before {
    content: '"';
    font-size: 3rem;
    color: var(--secondary-orange);
    position: absolute;
    top: -10px;
    left: -20px;
}

.testimonial-author {
    margin-bottom: var(--spacing-md);
}

.author-name {
    font-weight: 700;
    color: var(--text-dark);
}

.author-title {
    color: var(--text-light);
    font-size: 0.9rem;
}

.testimonial-stats {
    background: white;
    padding: var(--spacing-md);
    border-radius: 10px;
    text-align: center;
}

.testimonial-stats strong {
    color: var(--secondary-orange);
    font-size: 1.2rem;
}

/* 数据智库区域 */
.data-center-section {
    padding: var(--spacing-xxl) 0;
    background: var(--neutral-gray);
}

/* 文章列表版块样式 */
.blog-section {
    padding: var(--spacing-xxl) 0;
    background: white;
}

.section-subtitle {
    text-align: center;
    font-size: 1.1rem;
    color: var(--text-light);
    margin-bottom: var(--spacing-xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.blog-card {
    background: white;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-smooth);
    cursor: pointer;
    border: 1px solid #f0f0f0;
}

.blog-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.blog-image {
    height: 200px;
    overflow: hidden;
    position: relative;
    background: var(--neutral-gray);
}

.blog-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-smooth);
}

.blog-card:hover .blog-image img {
    transform: scale(1.05);
}

.blog-image-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    color: var(--text-light);
    background: linear-gradient(135deg, #f8f9fa, #e9ecef);
}

.blog-content {
    padding: var(--spacing-lg);
}

.blog-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-sm);
    font-size: 0.9rem;
}

.blog-date {
    display: flex;
    align-items: center;
    gap: 4px;
    color: var(--text-light);
}

.blog-category {
    background: var(--primary-color);
    color: white;
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 0.8rem;
    font-weight: 600;
}

.blog-title {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: var(--spacing-sm);
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.blog-excerpt {
    color: var(--text-light);
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.blog-footer {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    padding-top: var(--spacing-sm);
    border-top: 1px solid #f0f0f0;
}

.blog-read-more {
    color: var(--primary-color);
    font-weight: 600;
    text-decoration: none;
    font-size: 0.9rem;
    transition: color var(--transition-smooth);
}

.blog-read-more:hover {
    color: var(--secondary-color);
}

.blog-loading {
    grid-column: 1 / -1;
    text-align: center;
    padding: var(--spacing-xxl);
    color: var(--text-light);
}

.blog-loading .loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid #f3f3f3;
    border-top: 3px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto var(--spacing-md);
}

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

.blog-error {
    grid-column: 1 / -1;
    text-align: center;
    padding: var(--spacing-xxl);
    color: var(--text-light);
}

.blog-error-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.blog-more {
    text-align: center;
}

.btn-more {
    display: inline-block;
    padding: 12px 24px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    text-decoration: none;
    border-radius: 8px;
    font-weight: 600;
    transition: all var(--transition-smooth);
}

.btn-more:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .blog-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .blog-card {
        margin: 0 var(--spacing-sm);
    }
    
    .blog-meta {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-xs);
    }
    
    .blog-footer {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-xs);
    }
}

@media (max-width: 480px) {
    .blog-section {
        padding: var(--spacing-xl) 0;
    }
    
    .blog-content {
        padding: var(--spacing-md);
    }
    
    .blog-title {
        font-size: 1.1rem;
    }
}

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

.data-card {
    background: white;
    padding: var(--spacing-xl);
    border-radius: 20px;
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: var(--transition-medium);
}

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

.data-card h3 {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: var(--spacing-sm);
}

.data-card p {
    color: var(--text-light);
    margin-bottom: var(--spacing-md);
}

.download-btn {
    display: inline-block;
    background: var(--gradient-secondary);
    color: white;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: 25px;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition-fast);
}

.download-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* CTA区域 */
.cta-section {
    padding: var(--spacing-xxl) 0;
    background: var(--gradient-primary);
    color: white;
    text-align: center;
}

.cta-content h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.cta-content p {
    font-size: 1.2rem;
    opacity: 0.9;
    margin-bottom: var(--spacing-xl);
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
}

.btn-primary,
.btn-secondary {
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: 30px;
    font-weight: 600;
    font-size: 1.1rem;
    cursor: pointer;
    transition: var(--transition-fast);
    border: none;
}

.btn-primary {
    background: var(--gradient-secondary);
    color: white;
}

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

.btn-primary:hover,
.btn-secondary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.cta-contact {
    margin-top: var(--spacing-xl);
}

.qr-code {
    margin-top: var(--spacing-md);
}

.qr-code img {
    width: 120px;
    height: 120px;
    border-radius: 10px;
}

/* 页脚样式 */
.footer {
    background: var(--background-dark);
    color: white;
    padding: var(--spacing-xxl) 0 var(--spacing-lg);
}

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

.footer-section h4 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--secondary-orange);
}

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

.footer-section ul li {
    margin: var(--spacing-xs) 0;
}

.footer-section a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: var(--transition-fast);
}

.footer-section a:hover {
    color: var(--secondary-orange);
}

.social-links {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.social-link {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    background: rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    transition: var(--transition-fast);
}

.social-link:hover {
    background: var(--secondary-orange);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.6);
}

/* 智能客服 */
.smart-chat {
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: var(--z-fixed);
}

.chat-trigger {
    width: 60px;
    height: 60px;
    background: var(--gradient-secondary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: var(--shadow-lg);
    transition: var(--transition-fast);
    animation: pulse 2s ease-in-out infinite;
}

.chat-trigger:hover {
    transform: scale(1.1);
}

.gear-icon {
    width: 24px;
    height: 24px;
    fill: white;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: rgba(26, 58, 126, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: var(--spacing-lg) 0;
        box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
        z-index: var(--z-dropdown);
        transform: translateY(-20px);
        opacity: 0;
        transition: all var(--transition-medium);
    }

    .nav-menu.active {
        display: flex;
        transform: translateY(0);
        opacity: 1;
    }

    .nav-menu li {
        margin: var(--spacing-sm) 0;
        text-align: center;
    }

    .nav-menu a {
        display: block;
        padding: var(--spacing-md) var(--spacing-lg);
        font-size: 1.1rem;
        border-radius: 8px;
        margin: 0 var(--spacing-md);
        transition: all var(--transition-fast);
    }

    .nav-menu a:hover {
        background: rgba(255, 255, 255, 0.1);
        transform: translateX(5px);
    }

    .nav-cta a {
        background: var(--gradient-secondary) !important;
        margin: var(--spacing-md);
        text-align: center;
    }

    .nav-toggle {
        display: flex;
        padding: var(--spacing-xs);
        border-radius: 6px;
        transition: var(--transition-fast);
    }

    .nav-toggle:hover {
        background: rgba(255, 255, 255, 0.1);
    }

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

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

    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }
    
    .nav-logo {
        padding: 6px;
    }
    
    .nav-logo img {
        width: 36px;
        height: 36px;
    }
    
    .logo-text {
        font-size: 1.4rem;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .real-time-stats {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .solution-content,
    .testimonial-card {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .tab-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .partners-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .network-layer {
        position: static;
        margin: var(--spacing-md);
    }
    
    .ecosystem-network {
        height: auto;
        flex-direction: column;
        padding: var(--spacing-lg);
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .hero-container {
        padding: var(--spacing-lg) var(--spacing-sm);
    }
    
    .search-box {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .search-btn {
        justify-content: center;
    }
    
    .value-grid,
    .products-grid {
        grid-template-columns: 1fr;
    }
    
    .partners-grid {
        grid-template-columns: 1fr;
    }
    
    .nav-logo {
        padding: 4px;
    }
    
    .nav-logo img {
        width: 32px;
        height: 32px;
    }
    
    .logo-text {
        font-size: 1.2rem;
    }
    
    /* 移动端弹窗优化 */
    .qr-modal-content {
        margin: 20% auto;
        width: 95%;
        max-width: 350px;
    }
    
    .qr-image {
        width: 180px;
        height: 180px;
    }
    
    .qr-modal-header h3 {
        font-size: 1.1rem;
    }

    /* 微信客服二维码弹窗优化 */
    .wechat-modal-content {
        margin: 20% auto;
        width: 95%;
        max-width: 350px;
    }
    .wechat-image {
        width: 160px;
        height: 160px;
    }
    .wechat-modal-header h3 {
        font-size: 1.1rem;
    }
    
    /* 微信小程序按钮移动端优化 */
    .wechat-mini-btn {
        padding: var(--spacing-sm) var(--spacing-lg);
        font-size: 1rem;
    }
    
    .qr-features {
        padding: var(--spacing-sm);
    }
    
    .qr-features .feature-item {
        font-size: 0.9rem;
    }
    
    /* VIN查询按钮移动端优化 */
    .vin-search-btn {
        min-width: auto;
        width: 100%;
        max-width: 350px;
    }
    
    .vin-features {
        gap: var(--spacing-sm);
    }
    
    .feature-tag {
        font-size: 0.8rem;
        padding: 6px 12px;
    }
    
    /* 小程序弹窗移动端优化 */
    .miniprogram-modal-content {
        margin: 10% auto;
        width: 95%;
        max-width: 400px;
    }
    
    .miniprogram-container {
        flex-direction: column;
        text-align: center;
    }
    
    .miniprogram-qr {
        margin-bottom: var(--spacing-md);
    }
    
    .miniprogram-image {
        width: 180px;
        height: 180px;
    }
    
    .miniprogram-stats {
        justify-content: center;
    }
}

/* 小程序弹窗样式 */
.miniprogram-modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(8px);
    animation: modalFadeIn 0.3s ease-out;
}

.miniprogram-modal-content {
    background: white;
    margin: 5% auto;
    padding: 0;
    border-radius: 20px;
    width: 90%;
    max-width: 600px;
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.25);
    animation: modalSlideIn 0.3s ease-out;
    overflow: hidden;
}

.miniprogram-modal-header {
    background: var(--gradient-primary);
    color: white;
    padding: var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
}

.miniprogram-modal-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 20"><circle cx="10" cy="10" r="1" fill="%23ffffff" opacity="0.1"/><circle cx="30" cy="15" r="1" fill="%23ffffff" opacity="0.15"/><circle cx="50" cy="5" r="1" fill="%23ffffff" opacity="0.1"/><circle cx="70" cy="12" r="1" fill="%23ffffff" opacity="0.12"/><circle cx="90" cy="8" r="1" fill="%23ffffff" opacity="0.08"/></svg>') repeat-x;
    animation: float 10s infinite linear;
}

.miniprogram-modal-header h3 {
    margin: 0;
    font-size: 1.3rem;
    font-weight: 600;
    position: relative;
    z-index: 1;
}

.miniprogram-close {
    background: none;
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0;
    width: 35px;
    height: 35px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: var(--transition-fast);
    position: relative;
    z-index: 1;
}

.miniprogram-close:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: scale(1.1);
}

.miniprogram-modal-body {
    padding: var(--spacing-xl);
}

.miniprogram-container {
    display: flex;
    gap: var(--spacing-xl);
    align-items: flex-start;
}

.miniprogram-qr {
    flex-shrink: 0;
}

.miniprogram-image {
    width: 200px;
    height: 200px;
    border: 3px solid var(--neutral-gray);
    border-radius: 16px;
    padding: var(--spacing-sm);
    background: white;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
    transition: var(--transition-medium);
}

.miniprogram-image:hover {
    transform: scale(1.02);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.15);
}

.miniprogram-info {
    flex: 1;
}

.miniprogram-info h4 {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--primary-blue);
    margin-bottom: var(--spacing-md);
}

.miniprogram-features {
    margin-bottom: var(--spacing-md);
}

.mp-feature {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    padding: var(--spacing-xs);
    border-radius: 8px;
    transition: var(--transition-fast);
}

.mp-feature:hover {
    background: rgba(26, 58, 126, 0.05);
}

.mp-icon {
    font-size: 1rem;
    width: 20px;
    text-align: center;
}

.miniprogram-tip {
    background: rgba(255, 107, 53, 0.1);
    border-left: 4px solid var(--secondary-orange);
    padding: var(--spacing-md);
    border-radius: 0 8px 8px 0;
    margin: var(--spacing-md) 0;
}

.miniprogram-tip strong {
    color: var(--secondary-orange);
}

.miniprogram-stats {
    display: flex;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-md);
}

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

.mp-stat-number {
    display: block;
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary-blue);
    line-height: 1;
}

.mp-stat-label {
    font-size: 0.9rem;
    color: var(--text-light);
    margin-top: 4px;
}

.miniprogram-bottom {
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-md);
    border-top: 1px solid #eee;
}

.miniprogram-note {
    background: rgba(0, 212, 255, 0.1);
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: 12px;
    padding: var(--spacing-md);
    font-size: 0.9rem;
    color: var(--text-dark);
    margin: 0;
    text-align: center;
}

/* 性能优化 */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* 打印样式 */
@media print {
    .navbar,
    .smart-chat,
    .trading-ticker {
        display: none;
    }
    
    body {
        color: black;
        background: white;
    }
    
    .hero-section {
        background: white;
        color: black;
    }
}