/* 引入Tailwind CSS */
@import url('https://cdn.jsdelivr.net/npm/tailwindcss@2.2.19/dist/tailwind.min.css');

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f8f9fa;
    background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="100" height="100" viewBox="0 0 100 100"><rect width="100" height="100" fill="%23f8f9fa"/><path d="M0,50 Q25,25 50,50 T100,50" stroke="%23e9ecef" stroke-width="1" fill="none"/></svg>');
    background-size: 100px 100px;
}

/* 自定义颜色变量 */
:root {
    --primary-color: #1a73e8;
    --secondary-color: #34a853;
    --accent-color: #fbbc05;
    --dark-color: #202124;
    --light-color: #f8f9fa;
    --gray-color: #5f6368;
    --light-gray: #dadce0;
}

/* 容器样式 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 导航栏样式 */
header {
    background-color: rgba(255, 255, 255, 0.95);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    transition: all 0.3s ease;
}

/* 导航栏滚动样式 */
header.scrolled {
    background-color: rgba(255, 255, 255, 0.98);
    box-shadow: 0 2px 15px rgba(0, 0, 0, 0.1);
    padding: 5px 0;
}

.navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 15px 30px;
    max-width: 1400px;
    margin: 0 auto;
    position: relative;
}

.logo {
    position: absolute;
    left: 30px;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    align-items: center;
}

.logo img {
    height: 40px;
    margin-right: 10px;
}

.logo h1 {
    font-size: 24px;
    font-weight: 700;
    color: var(--dark-color);
    margin: 0;
}

.nav-center {
    flex: 1;
    display: flex;
    justify-content: center;
}

.nav-links {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-links li {
    margin: 0 15px;
}

.login-btn {
    background-color: var(--primary-color);
    color: white;
    padding: 8px 20px;
    border-radius: 20px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 14px;
    margin-left: auto;
}

.login-btn:hover {
    background-color: #1557b0;
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(26, 115, 232, 0.3);
}

.nav-links a {
    text-decoration: none;
    color: var(--dark-color);
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

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

.nav-links a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -5px;
    left: 0;
    background-color: var(--primary-color);
    transition: width 0.3s ease;
}

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

.nav-links a.active {
    color: var(--primary-color);
}

.nav-links a.active::after {
    width: 100%;
    background-color: var(--primary-color);
}

/* 下拉菜单样式 */
.dropdown {
    position: relative;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background-color: white;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    border-radius: 8px;
    padding: 8px 0;
    margin-top: 5px;
    min-width: 200px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
    z-index: 1000;
}

.dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-menu li {
    margin: 0;
}

.dropdown-menu a {
    display: block;
    padding: 10px 20px;
    color: var(--dark-color);
    text-decoration: none;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.dropdown-menu a:hover {
    background-color: var(--light-color);
    color: var(--primary-color);
    padding-left: 25px;
}

.dropdown-menu a::after {
    display: none;
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    color: var(--dark-color);
    cursor: pointer;
}

/* 移动设备响应式导航 */
@media (max-width: 768px) {
    .mobile-menu-btn {
        display: block;
        z-index: 1001;
    }
    
    .nav-center {
        display: none;
    }
    
    .nav-links {
        position: fixed;
        top: 80px;
        right: -100%;
        width: 80%;
        height: calc(100vh - 80px);
        background-color: white;
        flex-direction: column;
        padding: 20px;
        transition: all 0.3s ease;
        box-shadow: -2px 0 10px rgba(0, 0, 0, 0.1);
        overflow-y: auto;
        z-index: 1000;
    }
    
    .nav-links.active {
        right: 0;
    }
    
    .nav-links li {
        margin: 10px 0;
        width: 100%;
    }
    
    .nav-links a {
        display: block;
        padding: 10px 0;
        font-size: 18px;
    }
    
    /* 移动设备上下拉菜单显示样式 */
    .dropdown-menu {
        position: static;
        opacity: 0;
        visibility: hidden;
        transform: none;
        box-shadow: none;
        margin-top: 5px;
        margin-left: 20px;
        background-color: transparent;
        display: none;
        transition: opacity 0.3s ease;
    }
    
    .dropdown-menu.show {
        display: block;
        visibility: visible;
        opacity: 1;
    }
    
    .dropdown-menu li {
        margin: 5px 0;
    }
    
    .dropdown-menu a {
        padding: 8px 20px;
        color: var(--dark-color);
        font-weight: normal;
        font-size: 16px;
    }
    
    .dropdown-menu a:hover {
        padding-left: 25px;
    }
}

/* 英雄区域样式 */
.hero {
    background: linear-gradient(135deg, #1a73e8 0%, #4285f4 100%);
    color: white;
    padding: 180px 0 120px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1440 320"><path fill="rgba(255, 255, 255, 0.05)" fill-opacity="1" d="M0,192L60,181.3C120,171,240,149,360,160C480,171,600,213,720,208C840,203,960,149,1080,138.7C1200,128,1320,160,1380,176L1440,192L1440,320L1380,320C1320,320,1200,320,1080,320C960,320,840,320,720,320C600,320,480,320,360,320C240,320,120,320,60,320L0,320Z"></path></svg>');
    background-size: cover;
    background-position: center;
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero h1 {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 10px;
    opacity: 0;
    transform: translateY(20px);
    animation: fadeUp 0.8s ease forwards;
}

.platform-title {
    font-size: 2.8rem;
    margin-bottom: 2rem;
    font-weight: 700;
    line-height: 1.3;
    opacity: 0;
    transform: translateY(20px);
    animation: fadeUp 0.8s ease 0.2s forwards;
}

.hero p:nth-child(2) {
    font-size: 20px;
    margin-bottom: 20px;
    opacity: 0;
    transform: translateY(20px);
    animation: fadeUp 0.8s ease 0.3s forwards;
}

.slogan p {
    font-size: 18px;
    max-width: 800px;
    margin: 0 auto 30px;
    line-height: 1.8;
    opacity: 0;
    transform: translateY(20px);
    animation: fadeUp 0.8s ease 0.4s forwards;
}

.btn-primary {
    background: linear-gradient(135deg, #1a73e8, #4285f4);
    color: white;
    padding: 15px 30px;
    border: none;
    border-radius: 30px;
    font-size: 18px;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
    margin-top: 30px;
    box-shadow: 0 4px 15px rgba(26, 115, 232, 0.3);
    opacity: 0;
    transform: translateY(20px);
    animation: fadeUp 0.8s ease 0.6s forwards;
}

.btn-primary:hover {
    background: linear-gradient(135deg, #1557b0, #1a73e8);
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(26, 115, 232, 0.4);
}

/* 通用section样式 */
section {
    padding: 100px 0;
}

section:nth-child(even) {
    background-color: white;
}

section h2 {
    font-size: 28px;
    font-weight: 700;
    color: var(--primary-color);
    text-align: center;
    margin-bottom: 60px;
    position: relative;
}

section h2::after {
    content: '';
    position: absolute;
    width: 80px;
    height: 4px;
    background: linear-gradient(135deg, #1a73e8, #4285f4);
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    border-radius: 2px;
}

/* 页面标题 */
.page-header {
    background: linear-gradient(135deg, #1a73e8 0%, #4285f4 100%);
    color: white;
    padding: 150px 0 100px;
    text-align: center;
    margin-top: 80px;
}

.page-header h1 {
    font-size: 48px;
    margin-bottom: 10px;
    color: white;
}

.page-header p {
    font-size: 20px;
    color: rgba(255, 255, 255, 0.9);
}

/* 快速导航 */
.nav-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.nav-card {
    background-color: white;
    border-radius: 10px;
    padding: 40px 30px;
    text-align: center;
    transition: all 0.3s ease;
    box-shadow: 0 6px 15px rgba(0, 0, 0, 0.05);
    border-top: 4px solid var(--primary-color);
}

.nav-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.nav-card .icon {
    font-size: 48px;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.nav-card h3 {
    color: var(--dark-color);
    margin-bottom: 15px;
    font-size: 24px;
}

.nav-card p {
    color: var(--gray-color);
    margin-bottom: 25px;
    line-height: 1.8;
}



section h3 {
    font-size: 24px;
    font-weight: 600;
    color: var(--dark-color);
    margin: 40px 0 20px;
}

section h4 {
    font-size: 20px;
    font-weight: 600;
    color: var(--dark-color);
    margin: 20px 0 15px;
}

/* 行业特性样式 */
.feature-content {
    text-align: center;
    max-width: 900px;
    margin: 0 auto 40px;
    font-size: 18px;
    line-height: 1.8;
}

.pain-points {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 30px;
    margin-top: 40px;
}

.pain-point {
    flex: 1 1 calc(50% - 15px);
    background-color: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 6px 15px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
    border-top: 4px solid var(--primary-color);
}

.pain-point:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.pain-point .icon {
    font-size: 32px;
    color: var(--primary-color);
    margin-bottom: 20px;
}

/* 解决方案样式 */
.solutions {
    padding: 80px 0;
    background: var(--light-gray);
}

.solutions h2 {
    text-align: center;
    margin-bottom: 40px;
    font-size: 2.5rem;
    color: var(--dark-color);
}

.solution-container {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.solution-content {
    flex: 1;
    min-width: 300px;
    text-align: justify;
    line-height: 1.8;
    color: var(--gray-color);
    font-size: 1.1rem;
}

.solution-content p {
    margin-bottom: 20px;
}

.solution-image {
    flex: 1;
    min-width: 300px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.flow-chart {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.flow-chart:hover {
    transform: translateY(-5px);
}

/* API文档页面样式 */
.api-container {
    display: flex;
    min-height: calc(100vh - 80px);
    background-color: #f8fafc;
}

/* API页面iframe样式 */
.api-iframe {
    width: 100%;
    height: 100vh;
    border: none;
    background: white;
}

/* 左侧固定侧边栏 */
.api-sidebar {
    width: 280px;
    background: #ffffff;
    border-right: 1px solid #e2e8f0;
    position: fixed;
    top: 80px;
    left: 0;
    height: calc(100vh - 80px);
    overflow-y: auto;
    box-shadow: 2px 0 4px rgba(0, 0, 0, 0.1);
    z-index: 100;
}

.sidebar-header {
    padding: 20px;
    border-bottom: 1px solid #e2e8f0;
}

.sidebar-header h3 {
    color: #1e293b;
    font-size: 18px;
    font-weight: 600;
    margin: 0;
}

.sidebar-nav {
    padding: 0;
}

.nav-item {
    border-bottom: 1px solid #e2e8f0;
}

.nav-header {
    display: flex;
    align-items: center;
    padding: 15px 20px;
    cursor: pointer;
    transition: background-color 0.2s;
    user-select: none;
}

.nav-header:hover {
    background-color: #f1f5f9;
}

.nav-header i {
    margin-right: 10px;
    transition: transform 0.3s;
    font-size: 12px;
    color: #64748b;
}

.nav-header span {
    font-weight: 500;
    color: #374151;
    font-size: 15px;
}

.nav-subitems {
    display: none;
    background-color: #fafbfc;
}

.nav-link {
    display: block;
    padding: 10px 20px 10px 45px;
    color: #6b7280;
    text-decoration: none;
    font-size: 14px;
    transition: color 0.2s, background-color 0.2s;
    border-left: 3px solid transparent;
}

.nav-link:hover {
    color: #3b82f6;
    background-color: #f1f5f9;
    border-left-color: #3b82f6;
}

.nav-link.active {
    color: #3b82f6;
    background-color: #eff6ff;
    border-left-color: #3b82f6;
}

/* 多级子菜单样式 */
.nav-subitems .nav-subitems {
    background-color: #f8fafc;
}

.nav-subitems .nav-link {
    padding-left: 60px;
    font-size: 13px;
}

.nav-subitems .nav-subitems .nav-link {
    padding-left: 75px;
    font-size: 12px;
}

.nav-subitems .nav-header {
    padding: 8px 20px 8px 45px;
    font-size: 13px;
    color: #374151;
    font-weight: 500;
}

.nav-subitems .nav-subitems .nav-header {
    padding: 6px 20px 6px 60px;
    font-size: 12px;
    color: #4b5563;
}

/* 右侧内容区 */
.api-content {
    flex: 1;
    margin-left: 280px;
    padding: 40px;
    background-color: #ffffff;
    min-height: 100vh;
}

/* API页面移动端响应式样式 */
@media (max-width: 768px) {
    .api-container {
        flex-direction: column;
        min-height: auto;
    }
    
    .api-sidebar {
        width: 100%;
        position: relative;
        top: 0;
        height: auto;
        box-shadow: none;
        border-right: none;
        border-bottom: 1px solid #e2e8f0;
        z-index: 1000;
    }
    
    .api-content {
        margin-left: 0;
        padding: 20px;
        min-height: auto;
    }
    
    .api-iframe {
        height: calc(100vh - 160px);
        min-height: 400px;
    }
    
    .sidebar-nav {
        max-height: 60vh;
        overflow-y: auto;
    }
    
    .nav-item {
        border-bottom: 1px solid #f1f5f9;
    }
    
    .nav-header {
        padding: 12px 15px;
    }
    
    .nav-header span {
        font-size: 14px;
    }
    
    .nav-link {
        padding: 10px 15px 10px 35px;
        font-size: 13px;
    }
    
    .nav-subitems .nav-link {
        padding-left: 45px;
    }
    
    .nav-subitems .nav-subitems .nav-link {
        padding-left: 55px;
    }
}

@media (max-width: 576px) {
    .api-sidebar {
        position: fixed;
        top: 70px;
        left: 0;
        width: 100%;
        height: calc(100vh - 70px);
        z-index: 1000;
        transform: translateX(-100%);
        transition: transform 0.3s ease;
        box-shadow: 2px 0 8px rgba(0, 0, 0, 0.1);
    }
    
    .api-sidebar.active {
        transform: translateX(0);
    }
    
    .api-content {
        padding: 15px;
    }
    
    .api-iframe {
        height: calc(100vh - 70px);
    }
    
    .mobile-menu-toggle {
        display: block;
        position: fixed;
        top: 85px;
        left: 15px;
        z-index: 1001;
        background: #3b82f6;
        color: white;
        border: none;
        border-radius: 4px;
        padding: 8px 12px;
        font-size: 14px;
        cursor: pointer;
        box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    }
    
    .sidebar-nav {
        max-height: none;
        height: 100%;
    }
}

.api-section {
    margin-bottom: 60px;
}

.api-section h1 {
    color: #1e293b;
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 20px;
    border-bottom: 2px solid #e2e8f0;
    padding-bottom: 10px;
}

.api-info {
    background-color: #f8fafc;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 30px;
}

.info-row {
    display: flex;
    align-items: center;
    margin-bottom: 10px;
}

.info-row:last-child {
    margin-bottom: 0;
}

.label {
    font-weight: 600;
    color: #374151;
    min-width: 80px;
    margin-right: 10px;
}

.url {
    background-color: #1e293b;
    color: #ffffff;
    padding: 4px 8px;
    border-radius: 4px;
    font-family: 'Courier New', monospace;
    font-size: 14px;
}

.method {
    padding: 4px 12px;
    border-radius: 4px;
    font-size: 14px;
    font-weight: 600;
    color: #ffffff;
}

.method.post {
    background-color: #10b981;
}

.method.get {
    background-color: #3b82f6;
}

.method.put {
    background-color: #f59e0b;
}

.method.delete {
    background-color: #ef4444;
}

.description {
    color: #6b7280;
    font-size: 14px;
}

/* 参数表格 */
.request-params, .error-codes {
    margin-bottom: 30px;
}

.request-params h3, .response-example h3, .error-codes h3, .request-example h3 {
    color: #374151;
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 15px;
}

.params-table, .error-table {
    width: 100%;
    border-collapse: collapse;
    background-color: #ffffff;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    overflow: hidden;
}

.params-table th, .error-table th {
    background-color: #f8fafc;
    padding: 12px;
    text-align: left;
    font-weight: 600;
    color: #374151;
    border-bottom: 1px solid #e2e8f0;
    font-size: 14px;
}

.params-table td, .error-table td {
    padding: 12px;
    border-bottom: 1px solid #e2e8f0;
    color: #6b7280;
    font-size: 14px;
}

.params-table tr:last-child td, .error-table tr:last-child td {
    border-bottom: none;
}

.required {
    background-color: #fef3c7;
    color: #92400e;
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 600;
}

/* 代码块 */
.code-block {
    background-color: #1e293b;
    color: #e2e8f0;
    padding: 20px;
    border-radius: 8px;
    font-family: 'Courier New', monospace;
    font-size: 14px;
    line-height: 1.5;
    overflow-x: auto;
    margin: 0;
}

.request-example, .response-example {
    margin-bottom: 30px;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .solution-container {
        flex-direction: column;
    }
    
    .solution-content,
    .solution-image {
        width: 100%;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 20px;
        padding: 0 20px;
    }
    
    .contact-card {
        padding: 30px 25px;
    }
    
    .contact-card .card-icon {
        width: 60px;
        height: 60px;
        font-size: 24px;
    }
    
    .contact-card h3 {
        font-size: 20px;
    }
    
    .contact-card p {
        font-size: 15px;
    }
}

/* 业财融合支持样式 */
.support-cards {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 30px;
    margin-top: 40px;
}

.card {
    flex: 1 1 calc(33.333% - 20px);
    background-color: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 6px 15px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
    text-align: center;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.card .icon {
    font-size: 40px;
    color: var(--primary-color);
    margin-bottom: 20px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.card h3 {
    font-size: 20px;
    margin-bottom: 15px;
}

/* 智慧硬件页面公共样式 */
.container .smart-cabinet h2,
.container .smart-scale h2 {
    color: var(--primary-color) !important;
    font-size: 28px !important;
    font-weight: 700 !important;
    margin-bottom: 30px !important;
    text-align: center !important;
    position: relative !important;
    padding-bottom: 15px !important;
}

.container .smart-cabinet h3,
.container .smart-scale h3 {
    color: var(--dark-color) !important;
    font-size: 22px !important;
    font-weight: 600 !important;
    margin-bottom: 20px !important;
}

.container .smart-cabinet h4,
.container .smart-scale h4 {
    color: var(--primary-color) !important;
    font-size: 18px !important;
    font-weight: 600 !important;
    margin-bottom: 15px !important;
}

/* 列表项图标颜色 */
.container .smart-cabinet .content-card-body ul li i,
.container .smart-scale .content-card-body ul li i {
    color: var(--primary-color) !important;
    margin-right: 10px !important;
}

.container .smart-cabinet .content-card-body ul li strong,
.container .smart-scale .content-card-body ul li strong {
    color: var(--dark-color) !important;
    font-weight: 600 !important;
}

/* 碳解决方案两列卡片行样式 */
.card-row {
    display: flex;
    justify-content: space-between;
    margin-bottom: 30px;
    flex-wrap: wrap;
    gap: 30px;
}

.card-row:last-child {
    margin-bottom: 0;
}

.card-row .card {
    flex: 1 1 calc(50% - 15px);
    min-width: 300px;
}

/* 园区解决方案水平卡片样式 */
.strategy-cards-horizontal {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-top: 30px;
    flex-wrap: nowrap;
    width: 100%;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
    padding: 0 20px;
}

.strategy-card {
    flex: 1 1 calc(50% - 15px);
    background-color: white;
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 6px 15px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
    text-align: center;
    min-width: 300px;
    max-width: 580px;
}

.strategy-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.strategy-card .icon {
    font-size: 40px;
    color: var(--primary-color);
    margin-bottom: 20px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.strategy-card h4 {
    font-size: 22px;
    margin-bottom: 15px;
    color: var(--text-color);
}

.strategy-card p {
    font-size: 16px;
    line-height: 1.8;
    color: var(--gray-color);
    max-width: 600px;
    margin: 0 auto;
}

/* 税务数字基建样式 */
.two-columns {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 30px;
    margin-top: 40px;
}

.two-columns .card {
    flex: 1 1 calc(50% - 15px);
    min-width: 280px;
}

/* 税务数字基建样式 */
.tax-infrastructure {
    background: linear-gradient(135deg, #f5f7fa 0%, #e4e7ed 100%);
}

.tax-cards {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 30px;
    margin-top: 40px;
}

/* 园区解决方案样式 */
.park-section {
    margin: 0 calc(-50vw + 50%);
    padding: 0 20px;
    max-width: none;
    width: 100vw;
}

.park-section h3 {
    max-width: 1200px;
    margin: 0 auto 20px;
    text-align: left;
    padding: 0 20px;
}

/* 内容卡片样式 */
.park-content-card {
    flex: 1;
    background: linear-gradient(135deg, #ffffff 0%, #f8f9ff 100%);
    border-radius: 15px;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
    padding: 40px;
    border: 1px solid rgba(26, 115, 232, 0.1);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    justify-content: center;
    max-width: 33.33%;
}

.park-content-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 35px rgba(0, 0, 0, 0.15);
}

.content-card-header h3 {
    font-size: 28px;
    font-weight: 700;
    color: var(--dark-color);
    margin-bottom: 25px;
    padding-bottom: 15px;
    border-bottom: 2px solid var(--primary-color);
    position: relative;
}

.content-card-header h3::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 50px;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: 2px;
}

.content-card-body p {
    font-size: 18px;
    line-height: 1.8;
    color: var(--gray-color);
    text-align: justify;
    margin: 0 0 20px 0;
}

.content-card-body ul {
    margin: 0;
    padding-left: 20px;
}

.content-card-body ul li {
    font-size: 16px;
    line-height: 1.8;
    color: var(--gray-color);
    margin-bottom: 12px;
    text-align: justify;
}

.content-card-body ul li:last-child {
    margin-bottom: 0;
}

.content-card-body ul li strong {
    color: var(--dark-color);
    font-weight: 600;
}

/* 调整容器布局 */
.park-section {
    margin-bottom: 60px;
}

.section-title {
    font-size: 28px;
    font-weight: 700;
    color: var(--dark-color);
    margin-bottom: 30px;
    text-align: center;
    position: relative;
    padding-bottom: 15px;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: 2px;
}

.park-container {
    display: flex;
    align-items: stretch;
    justify-content: space-between;
    gap: 40px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.park-content {
    max-width: 1200px;
    margin: 0 auto 40px;
    text-align: justify;
    line-height: 1.8;
    color: var(--gray-color);
    font-size: 1.1rem;
    width: 100%;
    padding: 0 20px;
}

.park-image {
    flex: 2;
    display: flex;
    justify-content: center;
    align-items: center;
    max-width: 66.67%;
}

.park-flow-chart {
    width: 100%;
    height: auto;
    border-radius: 12px;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
    object-fit: contain;
}

.park-flow-chart:hover {
    transform: translateY(-5px);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .park-container {
        flex-direction: column;
    }
    
    .park-content-card {
        margin-right: 0;
        margin-bottom: 30px;
        padding: 30px 25px;
        max-width: 100%;
        width: 100%;
    }
    
    .park-image {
        max-width: 100%;
        width: 100%;
    }
    
    .section-title {
        font-size: 24px;
    }
    
    .park-content,
    .park-image {
        width: 100%;
    }
}

/* 平台价值样式 */
.platform-value {
    background: linear-gradient(135deg, #f8f9ff 0%, #f0f2ff 100%);
}

.value-cards {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 30px;
    margin-top: 40px;
}

/* 关于我们样式 */
.about-card {
    max-width: 800px;
    margin: 0 auto;
    background-color: white;
    padding: 40px;
    border-radius: 15px;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.08);
    text-align: center;
}

.about-content {
    font-size: 18px;
    line-height: 1.8;
    color: var(--text-color);
}

.about-content p {
    margin-bottom: 20px;
}

.about-content p:last-child {
    margin-bottom: 0;
}

/* 发展历程时间轴样式 */
.timeline-container {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
    padding: 5px 0;
}

.timeline-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 3px;
    height: 100%;
    background: linear-gradient(to bottom, var(--primary-color), var(--accent-color));
    border-radius: 2px;
}

.timeline-item {
    position: relative;
    width: 50%;
    padding: 8px 25px;
    box-sizing: border-box;
}

.timeline-item.left {
    left: 0;
    padding-right: 35px;
}

.timeline-item.right {
    left: 50%;
    padding-left: 35px;
}

.timeline-card {
    background: white;
    padding: 12px 18px;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    position: relative;
    transition: all 0.3s ease;
}

.timeline-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.12);
}

.timeline-card::before {
    content: '';
    position: absolute;
    top: 18px;
    width: 12px;
    height: 12px;
    background: var(--primary-color);
    border: 2px solid white;
    border-radius: 50%;
    box-shadow: 0 0 0 2px var(--primary-color);
}

.timeline-item.left .timeline-card::before {
    right: -47px;
}

.timeline-item.right .timeline-card::before {
    left: -47px;
}

.timeline-card::after {
    content: '';
    position: absolute;
    top: 20px;
    width: 0;
    height: 0;
    border: 6px solid transparent;
}

.timeline-item.left .timeline-card::after {
    right: -12px;
    border-left-color: white;
}

.timeline-item.right .timeline-card::after {
    left: -12px;
    border-right-color: white;
}

.timeline-card h4 {
    color: var(--primary-color);
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 4px;
}

.timeline-card p {
    color: var(--text-color);
    font-size: 14px;
    line-height: 1.4;
    margin: 0;
}

.company-info, .platform-info {
    flex: 1 1 calc(50% - 20px);
    background-color: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 6px 15px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.company-info:hover, .platform-info:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

/* 产业规模样式 */
.industry-scale {
    padding: 80px 0;
}

.industry-scale h2 {
    text-align: center;
    font-size: 36px;
    margin-bottom: 50px;
    color: white;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.industry-scale h3 {
    text-align: center;
    font-size: 28px;
    margin: 60px 0 40px;
    color: white;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.scale-content {
    text-align: center;
    font-size: 18px;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.9);
}

.opportunities {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.opportunity h4 {
    color: white;
    font-size: 22px;
    margin-bottom: 15px;
}

.opportunity p {
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.8;
}

/* 开放对接样式 */
.connection-content {
    text-align: center;
    max-width: 900px;
    margin: 0 auto 40px;
    font-size: 18px;
    line-height: 1.8;
}

.industry-abilities {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    justify-content: center;
    margin-top: 40px;
}

.industry-abilities:has(> .ability:nth-child(3):last-child) {
    justify-content: space-between;
}

.industry-abilities:has(> .ability:nth-child(3):last-child) > .ability {
    flex: 1 1 calc(33.333% - 14px);
    max-width: calc(33.333% - 14px);
    min-width: 0;
}

.ability {
    display: flex;
    align-items: center;
    background-color: white;
    padding: 15px 30px;
    border-radius: 30px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
    flex: 1 1 calc(50% - 10px);
    max-width: 500px;
}

.ability:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 15px rgba(0, 0, 0, 0.1);
}

.ability i {
    font-size: 24px;
    color: var(--primary-color);
    margin-right: 15px;
}

/* 核心优势样式 */
.advantages {
    padding: 80px 0;
    background-color: #f8f9fa;
}

.advantage-cards {
    display: flex;
    flex-wrap: wrap;
    gap: 30px;
    justify-content: center;
    margin-top: 50px;
}

.advantage-card {
    flex: 1 1 calc(50% - 15px);
    max-width: calc(50% - 15px);
    min-width: 280px;
    background: white;
    padding: 30px 25px;
    border-radius: 12px;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.08);
    text-align: center;
    transition: all 0.3s ease;
    min-height: 200px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.advantage-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.12);
}

.advantage-card .card-icon {
    width: 70px;
    height: 70px;
    margin: 0 auto 20px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 28px;
    transition: all 0.3s ease;
}

.advantage-card:hover .card-icon {
    transform: scale(1.1);
    box-shadow: 0 6px 20px rgba(0, 123, 255, 0.3);
}

.advantage-card h4 {
    color: var(--primary-color);
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 12px;
}

.advantage-card p {
    color: var(--text-color);
    font-size: 15px;
    line-height: 1.5;
    margin: 0;
}

/* 联系我们样式 */
.contact-info {
    padding: 80px 0;
    background-color: #f8f9fa;
}

.contact-info h2 {
    text-align: center;
    font-size: 36px;
    margin-bottom: 50px;
    color: var(--dark-color);
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
    max-width: 800px;
    margin: 0 auto;
}

.contact-card {
    background: white;
    border-radius: 15px;
    padding: 25px 30px;
    text-align: left;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    border: 1px solid rgba(26, 115, 232, 0.1);
}

.contact-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 35px rgba(0, 0, 0, 0.12);
}

.contact-card .card-icon {
    width: 70px;
    height: 70px;
    margin: 0 auto 25px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 28px;
    transition: all 0.3s ease;
}

.contact-card:hover .card-icon {
    transform: scale(1.1);
    box-shadow: 0 6px 20px rgba(26, 115, 232, 0.3);
}

.contact-card h3 {
    color: var(--primary-color);
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.contact-card h3 i {
    font-size: 20px;
    color: var(--primary-color);
}

.contact-card p {
    color: var(--text-color);
    font-size: 16px;
    line-height: 1.8;
    margin-bottom: 5px;
}

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

.contact {
    background-color: var(--dark-color);
    color: white;
}

.contact h2 {
    color: white;
}

.contact h2::after {
    background-color: var(--accent-color);
}

.contact-content {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.contact-info p {
    margin-bottom: 15px;
    font-size: 18px;
}

/* 页脚样式 */
footer {
    background-color: var(--dark-color);
    color: white;
    padding: 60px 0 30px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 40px;
    align-items: flex-start;
}

.footer-logo h3 {
    color: white;
    margin-bottom: 15px;
}

.footer-logo p {
    color: var(--light-gray);
    line-height: 1.8;
}

.footer-links h4 {
    color: white;
    margin-bottom: 20px;
}

.footer-links a {
    color: var(--light-gray);
    text-decoration: none;
    margin-right: 20px;
    transition: color 0.3s ease;
}

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

.footer-contact {
    text-align: center;
    margin: 0 auto;
}

.footer-contact h4 {
    color: white;
    margin-bottom: 15px;
    font-size: 18px;
    font-weight: 600;
}

.footer-contact p {
    color: var(--light-gray);
    line-height: 1.8;
    margin-bottom: 5px;
}

.footer-social {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 30px; /* 向上移动二维码，增加底部间距 */
}

.footer-social a {
    color: var(--light-gray);
    font-size: 20px;
    transition: color 0.3s ease;
}

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

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid var(--light-gray);
    color: var(--light-gray);
}

.footer-bottom p {
    margin-bottom: 5px;
}

/* 动画效果 */
@keyframes fadeUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 滚动动画 */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease;
}

.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

/* 一行三个卡片布局 */
.three-columns {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 30px;
}

.three-columns .pain-point {
    flex: 1 1 calc(33.333% - 20px);
    min-width: 250px;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .pain-point, .ability {
        flex: 1 1 100%;
    }
    
    .advantage-card {
        flex: 1 1 100%;
        max-width: 100%;
        min-width: auto;
    }
    
    .three-columns .pain-point {
        flex: 1 1 calc(50% - 15px);
    }
    
    .two-columns .card {
        flex: 1 1 calc(50% - 15px);
    }
    
    .strategy-cards-horizontal {
        flex-direction: column;
        flex-wrap: wrap;
        padding: 0;
    }
    
    .strategy-card {
        flex: 1 1 100%;
        max-width: 100%;
    }
    
    .park-section {
        margin: 0;
        width: 100%;
        padding: 0 20px;
    }
    
    .park-section h3 {
        padding: 0;
    }
    
    .park-content {
        padding: 0;
    }
    
    .card, .opportunity, .company-info, .platform-info {
        flex: 1 1 calc(50% - 15px);
    }
    
    .about-card {
        padding: 30px;
    }
    
    .timeline-container::before {
        left: 25px;
    }
    
    .timeline-item {
        width: 100%;
        padding-left: 60px;
        padding-right: 15px;
    }
    
    .timeline-item.left,
    .timeline-item.right {
        left: 0;
        padding-left: 60px;
        padding-right: 15px;
    }
    
    .timeline-card {
        padding: 15px 20px;
    }
    
    .timeline-card::before {
        left: -42px !important;
        right: auto !important;
        width: 10px;
        height: 10px;
    }
    
    .timeline-card::after {
        left: -12px !important;
        right: auto !important;
        border-right-color: white !important;
        border-left-color: transparent !important;
    }
    
    .footer-content {
        flex-direction: column;
        align-items: center;
    }
    
    .footer-social {
        justify-content: center;
    }
}

@media (max-width: 768px) {
    .three-columns .pain-point {
        flex: 1 1 100%;
    }
    
    .two-columns .card {
        flex: 1 1 100%;
    }
    
    .contact-abilities {
        flex-direction: column;
        gap: 15px;
        padding: 0 20px;
    }
    
    .contact-ability {
        flex: 1 1 100%;
        max-width: 100%;
        padding: 15px 20px;
        min-height: 70px;
    }
    
    .contact-ability i {
        font-size: 20px;
        margin-right: 12px;
    }
    
    .contact-ability h4 {
        font-size: 16px;
        margin-bottom: 3px;
    }
    
    .contact-ability p {
        font-size: 13px;
    }
    
    /* 联系我们模块移动端适配 */
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 20px;
        padding: 0 20px;
    }
    
    .contact-card {
        padding: 20px 25px;
        margin: 0 10px;
    }
    
    .contact-card h3 {
        font-size: 18px;
        margin-bottom: 10px;
    }
    
    .contact-card p {
        font-size: 15px;
    }
    
    /* 移动端卡片一列一张布局 */
    .support-cards,
    .value-cards,
    .advantage-cards,
    .card,
    .strategy-cards-horizontal,
    .tax-cards {
        flex-direction: column !important;
        align-items: center !important;
    }
    
    .support-cards > *,
    .value-cards > *,
    .advantage-cards > *,
    .card,
    .strategy-card,
    .tax-cards > * {
        width: 100% !important;
        max-width: 100% !important;
        margin-bottom: 20px !important;
    }
    
    .advantage-cards .advantage-card,
    .support-cards .card,
    .value-cards .card {
        flex: 1 1 100% !important;
        margin-bottom: 20px !important;
        width: 100% !important;
    }
    
    .strategy-cards-horizontal {
        flex-direction: column !important;
        gap: 20px !important;
    }
    
    .strategy-card {
        flex: 1 1 100% !important;
        max-width: 100% !important;
        min-width: auto !important;
        margin-bottom: 20px !important;
    }
    
    .industry-abilities {
        flex-direction: column !important;
        gap: 20px !important;
    }
    
    .industry-abilities .ability {
        flex: 1 1 100% !important;
        width: 100% !important;
        margin-bottom: 20px !important;
    }
}

@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
        align-items: flex-start;
        padding: 15px 20px;
    }

    .logo {
        position: relative;
        left: 0;
        top: 0;
        transform: none;
    }

    .nav-center {
        width: 100%;
    }

    .nav-links {
        display: none;
        flex-direction: column;
        width: 100%;
        margin-top: 15px;
        text-align: center;
    }

    .nav-links.active {
        display: flex;
    }

    .nav-links li {
        margin: 10px 0;
    }

    .mobile-menu-btn {
        display: block;
        position: absolute;
        right: 20px;
        top: 20px;
    }

    .login-btn {
        font-size: 12px;
        padding: 6px 15px;
        margin-left: 0;
    }

    .hero {
        padding: 120px 20px 80px;
    }

    .hero h1 {
        font-size: 36px;
    }

    .hero p {
        font-size: 16px;
    }

    .slogan p {
        font-size: 16px;
    }

    .nav-cards {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .nav-card {
        padding: 30px 20px;
    }

    .page-header {
        padding: 120px 20px 80px;
    }

    .page-header h1 {
        font-size: 32px;
    }

    section {
        padding: 60px 20px;
    }

    section h2 {
        font-size: 28px;
    }
    
    .card, .opportunity, .company-info, .platform-info {
        flex: 1 1 100%;
    }
}

@media (max-width: 576px) {
    .hero h1 {
        font-size: 30px;
    }
    
    .hero p:nth-child(2) {
        font-size: 18px;
    }
    
    section h2 {
        font-size: 24px;
    }
    
    .btn-primary {
        padding: 10px 20px;
        font-size: 14px;
    }
    
    .about-card {
        padding: 20px;
        margin: 0 10px;
    }
    
    .about-content {
        font-size: 16px;
    }
    
    .advantage-card {
        padding: 25px 20px;
        min-height: 180px;
    }
    
    .advantage-card .card-icon {
        width: 60px;
        height: 60px;
        font-size: 24px;
    }
    
    .advantage-card h4 {
        font-size: 18px;
    }
    
    .advantage-card p {
        font-size: 14px;
    }
    
    /* 联系我们模块小屏适配 */
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 15px;
        padding: 0 10px;
    }
    
    .contact-card {
        padding: 15px 20px;
        margin: 0 5px;
    }
    
    .contact-card h3 {
        font-size: 16px;
        margin-bottom: 8px;
    }
    
    .contact-card p {
        font-size: 14px;
        line-height: 1.6;
    }
}