/* ==================== 全局样式 ==================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* 主色调 - 传统红色 */
    --primary-color: #c41e3a;
    --primary-dark: #a01830;
    --primary-light: #e64d66;
    
    /* 辅助色调 - 金色 */
    --secondary-color: #d4af37;
    --secondary-dark: #b89628;
    --secondary-light: #e8c86b;
    
    /* 中性色 */
    --text-dark: #2c3e50;
    --text-gray: #5a6c7d;
    --text-light: #7f8c8d;
    --bg-white: #ffffff;
    --bg-light: #f8f9fa;
    --bg-gray: #e9ecef;
    
    /* 渐变色 */
    --gradient-primary: linear-gradient(135deg, #c41e3a 0%, #8b0000 100%);
    --gradient-secondary: linear-gradient(135deg, #d4af37 0%, #b8860b 100%);
    --gradient-dark: linear-gradient(135deg, #2c3e50 0%, #1a252f 100%);
    
    /* 阴影 */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.15);
    --shadow-xl: 0 16px 32px rgba(0, 0, 0, 0.2);
    
    /* 间距 */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 5rem;
    
    /* 圆角 */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 20px;
    --radius-full: 50%;
    
    /* 过渡 */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

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

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

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

/* ==================== 导航栏 ==================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: var(--bg-white);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
    padding: 1rem 0;
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-md);
    padding: 0.75rem 0;
}

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

.nav-brand {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.brand-logo {
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--bg-white);
    font-size: 1.5rem;
}

.nav-brand h1 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    line-height: 1.2;
}

.nav-brand .tagline {
    font-size: 0.75rem;
    color: var(--text-light);
    display: block;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-menu a {
    color: var(--text-dark);
    text-decoration: none;
    font-weight: 500;
    transition: color var(--transition-fast);
    position: relative;
    padding: 0.5rem 0;
}

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

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

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

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 0.5rem;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--text-dark);
    border-radius: 3px;
    transition: all var(--transition-fast);
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 6px);
}

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

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -6px);
}

/* ==================== 首页横幅 ==================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px;
    overflow: hidden;
    background: linear-gradient(135deg, #fff5f6 0%, #fff 100%);
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 20% 50%, rgba(196, 30, 58, 0.05) 0%, transparent 50%),
                radial-gradient(circle at 80% 50%, rgba(212, 175, 55, 0.05) 0%, transparent 50%);
    z-index: 1;
}

.hero-pattern {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23c41e3a' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    z-index: 1;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 2;
}

.hero-badge {
    display: flex;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.hero-badge span {
    background: rgba(196, 30, 58, 0.1);
    color: var(--primary-color);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 600;
}

.hero-title {
    font-size: 3rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.title-highlight {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-gray);
    margin-bottom: 1rem;
    font-weight: 600;
}

.hero-description {
    font-size: 1rem;
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: 2rem;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    text-align: center;
    padding: 1.5rem;
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-normal);
}

.stat-card:hover {
    transform: translateY(-5px);
}

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-gray);
}

.hero-actions {
    display: flex;
    gap: 1rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    border-radius: var(--radius-full);
    font-weight: 600;
    text-decoration: none;
    transition: all var(--transition-normal);
    border: 2px solid transparent;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--bg-white);
    box-shadow: 0 4px 15px rgba(196, 30, 58, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(196, 30, 58, 0.4);
}

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

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

.hero-visual {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.visual-circle {
    width: 400px;
    height: 400px;
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--bg-white);
    font-size: 8rem;
    opacity: 0.1;
    position: absolute;
}

.visual-float {
    position: absolute;
    width: 80px;
    height: 80px;
    background: var(--bg-white);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: var(--primary-color);
    box-shadow: var(--shadow-lg);
    animation: float 3s ease-in-out infinite;
}

.float-1 {
    top: 10%;
    left: 10%;
    animation-delay: 0s;
}

.float-2 {
    top: 20%;
    right: 15%;
    animation-delay: 1s;
}

.float-3 {
    bottom: 20%;
    left: 20%;
    animation-delay: 2s;
}

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

/* ==================== 通用Section样式 ==================== */
.section {
    padding: 5rem 0;
}

.section:nth-child(even) {
    background-color: var(--bg-light);
}

.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto;
}

/* ==================== 平台定位 ==================== */
.positioning-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.positioning-card {
    background: var(--bg-white);
    padding: 2.5rem;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
    text-align: center;
}

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

.card-icon {
    width: 80px;
    height: 80px;
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--bg-white);
    font-size: 2rem;
    margin: 0 auto 1.5rem;
}

.positioning-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.card-desc {
    color: var(--text-gray);
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.card-features {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    justify-content: center;
}

.card-features span {
    background: rgba(196, 30, 58, 0.1);
    color: var(--primary-color);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* ==================== 服务项目 ==================== */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.service-card {
    background: var(--bg-white);
    border-radius: var(--radius-xl);
    padding: 2rem;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: transform var(--transition-normal);
}

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

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

.service-card.featured::before {
    transform: scaleX(1);
    background: var(--gradient-secondary);
}

.service-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: var(--gradient-secondary);
    color: var(--bg-white);
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.service-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    color: var(--primary-color);
}

.service-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.service-items {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.service-items span {
    background: var(--bg-gray);
    color: var(--text-gray);
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
}

.service-desc {
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.service-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: gap var(--transition-fast);
}

.service-link:hover {
    gap: 1rem;
}

/* ==================== 平台优势 ==================== */
.features-container {
    display: grid;
    gap: 2rem;
}

.feature-item {
    display: flex;
    gap: 2rem;
    background: var(--bg-white);
    padding: 2rem;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
}

.feature-item:hover {
    transform: translateX(10px);
    box-shadow: var(--shadow-lg);
}

.feature-number {
    flex-shrink: 0;
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--bg-white);
    font-size: 1.5rem;
    font-weight: 700;
}

.feature-content h3 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
    color: var(--text-dark);
}

.feature-content p {
    color: var(--text-light);
    line-height: 1.8;
}

/* ==================== 技术架构 ==================== */
.architecture-layers {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.arch-layer {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    display: flex;
    flex-wrap: wrap;
}

.layer-header {
    background: var(--gradient-primary);
    color: var(--bg-white);
    padding: 1.5rem 2rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    flex: 0 0 200px;
}

.layer-number {
    width: 40px;
    height: 40px;
    background: var(--bg-white);
    color: var(--primary-color);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.25rem;
}

.layer-header h4 {
    font-size: 1.125rem;
    font-weight: 600;
}

.layer-body {
    padding: 1.5rem 2rem;
    flex: 1;
}

.layer-body p {
    color: var(--text-gray);
    margin-bottom: 1rem;
}

.layer-tags {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.layer-tags span {
    background: rgba(196, 30, 58, 0.1);
    color: var(--primary-color);
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 500;
}

/* ==================== 资源整合 ==================== */
.resource-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.resource-card {
    background: var(--bg-white);
    padding: 2.5rem;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
}

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

.resource-icon {
    width: 70px;
    height: 70px;
    background: var(--gradient-secondary);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--bg-white);
    font-size: 2rem;
    margin-bottom: 1.5rem;
}

.resource-card h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.resource-card p {
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.resource-points {
    list-style: none;
}

.resource-points li {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0;
    color: var(--text-gray);
}

.resource-points i {
    color: var(--primary-color);
}

/* ==================== 物流体系 ==================== */
.logistics-flow {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.flow-step {
    flex: 1;
    min-width: 200px;
    text-align: center;
    position: relative;
}

.step-icon {
    width: 100px;
    height: 100px;
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--bg-white);
    font-size: 2.5rem;
    margin: 0 auto 1rem;
    box-shadow: 0 4px 20px rgba(196, 30, 58, 0.3);
}

.flow-step h4 {
    font-size: 1.125rem;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

.flow-step p {
    color: var(--text-light);
    font-size: 0.875rem;
}

.step-line {
    position: absolute;
    right: -50%;
    top: 50%;
    width: 100%;
    height: 3px;
    background: var(--gradient-primary);
    transform: translateY(-50%);
    z-index: -1;
}

.flow-step:last-child .step-line {
    display: none;
}

.logistics-features {
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.feature-tag {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    background: var(--bg-white);
    padding: 1rem 2rem;
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-md);
}

.feature-tag i {
    color: var(--primary-color);
    font-size: 1.25rem;
}

.feature-tag span {
    color: var(--text-dark);
    font-weight: 600;
}

/* ==================== 服务流程 ==================== */
.process-steps {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
    flex-wrap: wrap;
}

.process-step {
    flex: 1;
    min-width: 200px;
    text-align: center;
    padding: 2rem;
    background: var(--bg-white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
}

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

.step-number {
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--bg-white);
    font-size: 1.25rem;
    font-weight: 700;
    margin: 0 auto 1rem;
}

.process-step .step-icon {
    width: 80px;
    height: 80px;
    background: rgba(196, 30, 58, 0.1);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    font-size: 2rem;
    margin: 0 auto 1rem;
}

.process-step h3 {
    font-size: 1.125rem;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

.process-step p {
    color: var(--text-light);
    font-size: 0.875rem;
    line-height: 1.6;
}

.process-arrow {
    color: var(--primary-color);
    font-size: 1.5rem;
}

/* ==================== 发展规划 ==================== */
.timeline {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 20px;
    top: 0;
    bottom: 0;
    width: 3px;
    background: var(--gradient-primary);
}

.timeline-item {
    position: relative;
    padding-left: 60px;
    margin-bottom: 3rem;
}

.timeline-item:last-child {
    margin-bottom: 0;
}

.timeline-marker {
    position: absolute;
    left: 7px;
    top: 0;
    width: 30px;
    height: 30px;
    background: var(--primary-color);
    border-radius: var(--radius-full);
    border: 4px solid var(--bg-white);
    box-shadow: var(--shadow-md);
}

.timeline-content {
    background: var(--bg-white);
    padding: 2rem;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
}

.timeline-content:hover {
    transform: translateX(10px);
    box-shadow: var(--shadow-lg);
}

.timeline-badge {
    display: inline-block;
    padding: 0.5rem 1.5rem;
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--bg-white);
}

.phase-1 {
    background: var(--gradient-primary);
}

.phase-2 {
    background: var(--gradient-secondary);
}

.phase-3 {
    background: var(--gradient-dark);
}

.timeline-content h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

.timeline-time {
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 1rem;
}

.timeline-desc {
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.timeline-targets {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.target {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(196, 30, 58, 0.05);
    padding: 0.75rem 1rem;
    border-radius: var(--radius-md);
}

.target i {
    color: var(--primary-color);
}

.target span {
    font-size: 0.875rem;
    color: var(--text-dark);
    font-weight: 600;
}

/* ==================== 平台价值 ==================== */
.values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.value-card {
    background: var(--bg-white);
    padding: 3rem 2rem;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    text-align: center;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.value-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-primary);
    opacity: 0;
    transition: opacity var(--transition-normal);
}

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

.value-card:hover::before {
    opacity: 0.05;
}

.value-icon {
    width: 80px;
    height: 80px;
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--bg-white);
    font-size: 2rem;
    margin: 0 auto 1.5rem;
}

.value-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.value-card p {
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.value-stat {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(196, 30, 58, 0.1);
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-full);
    color: var(--primary-color);
    font-weight: 600;
}

/* ==================== 本地化运营 ==================== */
.operation-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.operation-card {
    background: var(--bg-white);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
}

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

.operation-image {
    height: 200px;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--bg-white);
    font-size: 4rem;
}

.operation-content {
    padding: 2rem;
}

.operation-content h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.operation-content p {
    color: var(--text-light);
    line-height: 1.8;
}

/* ==================== 联系我们 ==================== */
.qrcode-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.qrcode-card {
    background: var(--bg-white);
    padding: 2.5rem;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    text-align: center;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

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

.qrcode-card.featured {
    border: 3px solid var(--primary-color);
}

.qrcode-badge {
    position: absolute;
    top: 15px;
    right: 15px;
    background: var(--primary-color);
    color: var(--bg-white);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 600;
}

.qrcode-img {
    width: 180px;
    height: 180px;
    background: var(--gradient-primary);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    color: var(--bg-white);
    font-size: 5rem;
    transition: all var(--transition-normal);
    overflow: hidden;
}

.qrcode-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: all var(--transition-normal);
}

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

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

.qrcode-card h3 {
    font-size: 1.375rem;
    color: var(--text-dark);
    margin-bottom: 0.5rem;
}

.qrcode-card > p {
    color: var(--text-light);
    margin-bottom: 1.5rem;
    font-size: 1rem;
}

.qrcode-desc {
    border-top: 1px solid var(--bg-gray);
    padding-top: 1.5rem;
}

.qrcode-desc p {
    color: var(--text-light);
    margin-bottom: 0.5rem;
    font-size: 0.9375rem;
    line-height: 1.6;
}

.qrcode-desc p:last-child {
    margin-bottom: 0;
}

.contact-tips {
    text-align: center;
    padding: 2rem;
    background: rgba(196, 30, 58, 0.05);
    border-radius: var(--radius-lg);
    border-left: 5px solid var(--primary-color);
}

.contact-tips p {
    color: var(--text-light);
    margin-bottom: 0.75rem;
    font-size: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
}

.contact-tips p:last-child {
    margin-bottom: 0;
}

.contact-tips i {
    color: var(--primary-color);
    font-size: 1.125rem;
}

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

.form-group textarea {
    resize: vertical;
}

/* ==================== 页脚 ==================== */
.footer {
    background: var(--gradient-dark);
    color: var(--bg-white);
    padding: 4rem 0 2rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-brand h3 {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.footer-brand p {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 1rem;
}

.footer-desc {
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.footer-social {
    display: flex;
    gap: 1rem;
}

.footer-social a {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--bg-white);
    transition: all var(--transition-fast);
}

.footer-social a:hover {
    background: var(--primary-color);
    transform: translateY(-3px);
}

.footer-section h4 {
    font-size: 1.125rem;
    margin-bottom: 1.5rem;
}

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

.footer-section li {
    margin-bottom: 0.75rem;
}

.footer-section a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    flex-wrap: wrap;
    gap: 1rem;
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.5);
}

.footer-bottom-right {
    display: flex;
    gap: 2rem;
}

.footer-bottom-right a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer-bottom-right a:hover {
    color: var(--bg-white);
}

/* ==================== 回到顶部按钮 ==================== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    color: var(--bg-white);
    border: none;
    border-radius: var(--radius-full);
    font-size: 1.25rem;
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(196, 30, 58, 0.3);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 20px rgba(196, 30, 58, 0.4);
}

/* ==================== 响应式设计 ==================== */
@media (max-width: 1024px) {
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-stats {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .hero-actions {
        justify-content: center;
    }
    
    .hero-visual {
        display: none;
    }
    
    .visual-circle {
        width: 300px;
        height: 300px;
    }
    
    .qrcode-container {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }
}

@media (max-width: 768px) {
    .qrcode-card {
        padding: 2rem;
    }
    
    .qrcode-img {
        width: 150px;
        height: 150px;
        font-size: 4rem;
    }
    
    .qrcode-img img {
        width: 100%;
        height: 100%;
        object-fit: cover;
    }
    
    .qrcode-card h3 {
        font-size: 1.1875rem;
    }
    
    .contact-tips {
        padding: 1.5rem;
    }
    
    .contact-tips p {
        flex-direction: column;
        gap: 0.5rem;
        text-align: left;
    }
}

@media (max-width: 768px) {
    .navbar .container {
        flex-direction: column;
        gap: 1rem;
    }
    
    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--bg-white);
        flex-direction: column;
        padding: 1rem;
        gap: 0.5rem;
        box-shadow: var(--shadow-md);
    }
    
    .nav-menu.active {
        display: flex;
    }
    
    .hamburger {
        display: flex;
        position: absolute;
        right: 1.5rem;
        top: 50%;
        transform: translateY(-50%);
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .hero-stats {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .hero-actions {
        flex-direction: column;
    }
    
    .hero-badge {
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .section-subtitle {
        font-size: 1rem;
    }
    
    .section {
        padding: 3rem 0;
    }
    
    .logistics-flow {
        flex-direction: column;
    }
    
    .flow-step {
        width: 100%;
    }
    
    .step-line {
        display: none;
    }
    
    .process-steps {
        flex-direction: column;
    }
    
    .process-arrow {
        transform: rotate(90deg);
    }
    
    .timeline::before {
        left: 10px;
    }
    
    .timeline-item {
        padding-left: 40px;
    }
    
    .timeline-marker {
        left: -2px;
        width: 24px;
        height: 24px;
    }
    
    .timeline-content {
        padding: 1.5rem;
    }
    
    .timeline-targets {
        flex-direction: column;
    }
    
    .feature-item {
        flex-direction: column;
        text-align: center;
    }
    
    .feature-number {
        margin: 0 auto 1rem;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
    
    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 45px;
        height: 45px;
    }
}

@media (max-width: 480px) {
    html {
        font-size: 14px;
    }
    
    .hero-title {
        font-size: 1.75rem;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
    
    .btn {
        padding: 0.875rem 1.5rem;
        font-size: 0.875rem;
    }
    
    .positioning-card,
    .service-card,
    .resource-card,
    .value-card,
    .operation-card {
        padding: 1.5rem;
    }
    
    .qrcode-card {
        padding: 1.5rem;
    }
    
    .qrcode-img {
        width: 130px;
        height: 130px;
        font-size: 3.5rem;
    }
    
    .qrcode-img img {
        width: 100%;
        height: 100%;
        object-fit: cover;
    }
}

/* ==================== 滚动条样式 ==================== */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--bg-light);
}

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-dark);
}

/* ==================== 动画效果 ==================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeInUp 0.6s ease-out;
}

/* ==================== 打印样式 ==================== */
@media print {
    .navbar,
    .back-to-top,
    .hero-actions {
        display: none;
    }
    
    .hero {
        min-height: auto;
        padding: 2rem 0;
    }
}