/* 阿里巴巴渠道商专业样式 */
:root {
    --primary-color: #FF6A00; /* 阿里巴巴橙 */
    --primary-dark: #E55A00;
    --secondary-color: #0052CC; /* 阿里巴巴蓝 */
    --secondary-dark: #0047B3;
    --accent-color: #FFC107; /* 金品黄 */
    --accent-dark: #FFA000;
    --text-color: #333;
    --text-light: #666;
    --text-lighter: #999;
    --light-bg: #F8F9FA;
    --light-border: #E8E8E8;
    --white: #FFFFFF;
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-hover: 0 8px 24px rgba(0, 0, 0, 0.12);
    --radius: 8px;
    --transition: all 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--white);
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 顶部导航 */
.top-header {
    background: linear-gradient(135deg, #1A202C 0%, #2D3748 100%);
    color: var(--white);
    padding: 15px 0;
    font-size: 0.9rem;
}

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

.logo-area {
    display: flex;
    align-items: center;
}

.company-logo h1 {
    font-size: 1.6rem;
    font-weight: 800;
    line-height: 1.2;
}

.logo-blue {
    color: #4A90E2;
}

.logo-orange {
    color: var(--primary-color);
}

.company-tagline {
    font-size: 0.8rem;
    color: #A0AEC0;
    margin-top: 2px;
}

.alibaba-partner {
    display: flex;
    gap: 20px;
}

.partner-badge {
    display: flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 255, 255, 0.1);
    padding: 6px 12px;
    border-radius: 4px;
    font-weight: 500;
}

.partner-badge i {
    font-size: 1.1rem;
}

/* 主导航 */
.main-navbar {
    background-color: var(--white);
    padding: 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: var(--transition);
    border-bottom: 1px solid var(--light-border);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 20px;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-menu a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    padding: 20px 0;
    display: inline-block;
    position: relative;
    transition: var(--transition);
}

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

.nav-menu a.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background-color: var(--primary-color);
}

.nav-contact {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--primary-color);
    font-weight: 600;
}

/* 横幅区域 */
.hero-banner {
    background: linear-gradient(135deg, #1A202C 0%, #2D3748 100%);
    color: var(--white);
    padding: 80px 0;
}

.banner-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
}

.banner-content {
    flex: 1;
}

.banner-title {
    font-size: 2.8rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 10px;
}

.banner-subtitle {
    font-size: 1.8rem;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.banner-description {
    font-size: 1.1rem;
    line-height: 1.7;
    color: #CBD5E0;
    margin-bottom: 30px;
    max-width: 600px;
}

.banner-stats {
    display: flex;
    gap: 40px;
    margin-bottom: 40px;
}

.stat-item {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--primary-color);
    line-height: 1;
}

.stat-label {
    font-size: 0.9rem;
    color: #A0AEC0;
    margin-top: 5px;
}

.banner-buttons {
    display: flex;
    gap: 20px;
}

.btn {
    display: inline-block;
    padding: 14px 32px;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    transition: var(--transition);
    border: none;
    cursor: pointer;
}

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

.btn-primary:hover {
    background-color: var(--primary-dark);
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(255, 106, 0, 0.3);
}

.btn-secondary {
    background-color: transparent;
    color: var(--white);
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.btn-secondary:hover {
    background-color: rgba(255, 255, 255, 0.1);
    border-color: var(--white);
    transform: translateY(-3px);
}

.banner-image {
    flex: 0 0 300px;
}

.alibaba-products {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.product-icon {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 20px;
    border-radius: var(--radius);
    color: white;
    font-weight: 600;
    font-size: 1.2rem;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.product-icon:hover {
    transform: translateX(10px);
}

.product-icon i {
    font-size: 1.8rem;
}

/* 通用区块样式 */
.section {
    padding: 80px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-title {
    font-size: 2.2rem;
    font-weight: 700;
    margin-bottom: 15px;
    color: var(--text-color);
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-light);
    max-width: 700px;
    margin: 0 auto;
}

/* 产品卡片 */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.product-card {
    background: var(--white);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid var(--light-border);
}

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

.product-card.highlight {
    border: 2px solid var(--accent-color);
    position: relative;
}

.product-card.highlight::before {
    content: "推荐";
    position: absolute;
    top: 15px;
    right: -30px;
    background-color: var(--accent-color);
    color: var(--text-color);
    padding: 5px 40px;
    font-weight: 600;
    font-size: 0.9rem;
    transform: rotate(45deg);
    z-index: 1;
}

.product-header {
    padding: 30px;
    color: white;
    text-align: center;
    position: relative;
}

.product-icon-large {
    font-size: 3rem;
    margin-bottom: 15px;
}

.product-name {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.product-tag {
    display: inline-block;
    background: rgba(255, 255, 255, 0.2);
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
}

.product-body {
    padding: 30px;
}

.product-description {
    color: var(--text-light);
    margin-bottom: 20px;
    line-height: 1.6;
}

.product-features {
    list-style: none;
    margin-bottom: 25px;
}

.product-features li {
    padding: 8px 0;
    border-bottom: 1px solid var(--light-border);
    display: flex;
    align-items: center;
    gap: 10px;
}

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

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

.product-suitable {
    background-color: var(--light-bg);
    padding: 15px;
    border-radius: var(--radius);
    margin-bottom: 25px;
}

.product-suitable h4 {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
    color: var(--text-color);
}

.product-suitable p {
    color: var(--text-light);
    font-size: 0.95rem;
}

.product-btn {
    display: block;
    text-align: center;
    background-color: var(--primary-color);
    color: white;
    padding: 12px;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
}

.product-btn:hover {
    background-color: var(--primary-dark);
}

.highlight-btn {
    background-color: var(--accent-color);
    color: var(--text-color);
}

.highlight-btn:hover {
    background-color: var(--accent-dark);
}

/* 企业对比表格 */
.comparison-table {
    background: var(--white);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
}

.table-header {
    display: grid;
    grid-template-columns: 1.2fr 1fr 1.5fr 0.8fr 0.8fr;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    font-weight: 600;
    padding: 20px;
}

.table-row {
    display: grid;
    grid-template-columns: 1.2fr 1fr 1.5fr 0.8fr 0.8fr;
    padding: 25px 20px;
    border-bottom: 1px solid var(--light-border);
    align-items: center;
}

.table-row:last-child {
    border-bottom: none;
}

.table-row:hover {
    background-color: var(--light-bg);
}

.enterprise-type {
    display: flex;
    align-items: center;
    gap: 15px;
}

.type-icon {
    width: 50px;
    height: 50px;
    background-color: var(--light-bg);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--primary-color);
}

.type-info h4 {
    font-weight: 600;
    margin-bottom: 5px;
}

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

.recommendation {
    display: flex;
    gap: 8px;
    margin-bottom: 8px;
}

.product-tag-small {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 20px;
    color: white;
    font-size: 0.8rem;
    font-weight: 500;
}

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

.feature-list {
    list-style: none;
}

.feature-list li {
    padding: 5px 0;
    color: var(--text-color);
    position: relative;
    padding-left: 15px;
}

.feature-list li::before {
    content: "•";
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

.investment-level {
    display: inline-block;
    padding: 6px 15px;
    border-radius: 20px;
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 8px;
}

.investment-level.low {
    background-color: #E8F5E9;
    color: #2E7D32;
}

.investment-level.medium {
    background-color: #FFF3E0;
    color: #EF6C00;
}

.investment-level.high {
    background-color: #FFEBEE;
    color: #C62828;
}

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

.action-btn {
    display: inline-block;
    padding: 10px 20px;
    background-color: var(--primary-color);
    color: white;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    transition: var(--transition);
}

.action-btn:hover {
    background-color: var(--primary-dark);
}

/* 服务优势 */
.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.advantage-card {
    background: var(--white);
    padding: 30px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    transition: var(--transition);
    border-top: 4px solid var(--primary-color);
}

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

.advantage-icon {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.advantage-card h3 {
    font-size: 1.4rem;
    margin-bottom: 15px;
    color: var(--text-color);
}

.advantage-card p {
    color: var(--text-light);
    line-height: 1.6;
}

/* 服务流程 */
.process-steps {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 30px;
    position: relative;
}

.process-steps::before {
    content: '';
    position: absolute;
    top: 40px;
    left: 50px;
    right: 50px;
    height: 3px;
    background-color: var(--light-border);
    z-index: 0;
}

.process-step {
    flex: 1;
    min-width: 300px;
    max-width: 350px;
    background: var(--white);
    padding: 30px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    position: relative;
    z-index: 1;
    text-align: center;
}

.step-number {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    font-weight: 700;
    margin: 0 auto 20px;
}

.step-content h3 {
    font-size: 1.4rem;
    margin-bottom: 10px;
    color: var(--text-color);
}

.step-content p {
    color: var(--text-light);
    line-height: 1.6;
}

/* 成功案例 */
.cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.case-card {
    background: var(--white);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

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

.case-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
    background: linear-gradient(135deg, var(--secondary-color), var(--secondary-dark));
    color: white;
}

.case-category {
    font-weight: 600;
}

.case-industry {
    background: rgba(255, 255, 255, 0.2);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.85rem;
}

.case-body {
    padding: 25px;
}

.case-body h3 {
    font-size: 1.4rem;
    margin-bottom: 15px;
    color: var(--text-color);
}

.case-desc {
    color: var(--text-light);
    margin-bottom: 20px;
    line-height: 1.6;
}

.case-results {
    display: flex;
    justify-content: space-around;
    border-top: 1px solid var(--light-border);
    padding-top: 20px;
}

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

.result-value {
    display: block;
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary-color);
    line-height: 1;
}

.result-label {
    font-size: 0.9rem;
    color: var(--text-light);
    margin-top: 5px;
}

/* 联系表单 */
.contact-section {
    background: linear-gradient(135deg, #1A202C 0%, #2D3748 100%);
    color: white;
}

.contact-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
}

.contact-title {
    font-size: 2.2rem;
    margin-bottom: 15px;
}

.contact-subtitle {
    color: #CBD5E0;
    margin-bottom: 40px;
    font-size: 1.1rem;
}

.contact-details {
    margin-bottom: 40px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 25px;
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: rgba(255, 106, 0, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: var(--primary-color);
}

.contact-text h4 {
    font-size: 1.1rem;
    margin-bottom: 5px;
}

.contact-text p {
    color: #A0AEC0;
}

.contact-qr {
    display: flex;
    gap: 30px;
}

.qr-code {
    text-align: center;
}

.qr-placeholder {
    width: 120px;
    height: 120px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 10px;
    color: #A0AEC0;
}

.contact-form {
    background: white;
    padding: 40px;
    border-radius: var(--radius);
    color: var(--text-color);
}

.contact-form h3 {
    font-size: 1.6rem;
    margin-bottom: 25px;
    color: var(--text-color);
}

.form-group {
    margin-bottom: 20px;
}

.form-group input, .form-group select, .form-group textarea {
    width: 100%;
    padding: 14px;
    border: 1px solid var(--light-border);
    border-radius: 6px;
    font-family: 'Noto Sans SC', sans-serif;
    font-size: 1rem;
    transition: var(--transition);
}

.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(255, 106, 0, 0.1);
}

.submit-btn {
    width: 100%;
    padding: 16px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.submit-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(255, 106, 0, 0.3);
}

/* 页脚 */
.main-footer {
    background-color: #1A202C;
    color: white;
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-about h3 {
    font-size: 1.4rem;
    margin-bottom: 20px;
    color: white;
}

.footer-about p {
    color: #A0AEC0;
    line-height: 1.6;
    margin-bottom: 20px;
}

.footer-cert {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--primary-color);
    font-weight: 500;
}

.footer-links h4, .footer-products h4, .footer-contact h4 {
    font-size: 1.2rem;
    margin-bottom: 20px;
    color: white;
}

.footer-links ul, .footer-products ul {
    list-style: none;
}

.footer-links li, .footer-products li {
    margin-bottom: 12px;
}

.footer-links a, .footer-products a {
    color: #A0AEC0;
    text-decoration: none;
    transition: var(--transition);
}

.footer-links a:hover, .footer-products a:hover {
    color: var(--primary-color);
    padding-left: 5px;
}

.footer-contact p {
    color: #A0AEC0;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.social-links {
    display: flex;
    gap: 15px;
    margin-top: 20px;
}

.social-links a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    color: white;
    font-size: 1.2rem;
    transition: var(--transition);
}

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

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: #718096;
    font-size: 0.9rem;
}

.footer-bottom p {
    margin-bottom: 10px;
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .banner-container {
        flex-direction: column;
        text-align: center;
    }
    
    .banner-stats {
        justify-content: center;
    }
    
    .contact-container {
        grid-template-columns: 1fr;
    }
    
    .table-header, .table-row {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .table-col {
        padding: 10px 0;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .banner-title {
        font-size: 2.2rem;
    }
    
    .banner-subtitle {
        font-size: 1.4rem;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .products-grid {
        grid-template-columns: 1fr;
    }
    
    .process-steps::before {
        display: none;
    }
    
    .advantages-grid, .cases-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .banner-title {
        font-size: 1.8rem;
    }
    
    .banner-stats {
        flex-direction: column;
        gap: 20px;
    }
    
    .banner-buttons {
        flex-direction: column;
        gap: 15px;
    }
    
    .btn {
        width: 100%;
        text-align: center;
    }
}