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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #fff;
}

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

/* 导航栏样式 */
.navbar {
    background: #fff;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 15px;
}

.logo-image {
    width: 50px;
    height: 50px;
    object-fit: contain;
}

.logo-text h1 {
    color: #ff6b35;
    font-size: 28px;
    font-weight: bold;
    margin: 0;
}

.logo-text span {
    color: #666;
    font-size: 14px;
    display: block;
    margin-top: -5px;
}

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

.nav-menu a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    padding: 10px 15px;
    border-radius: 5px;
    transition: all 0.3s ease;
}

.nav-menu a:hover,
.nav-menu a.active {
    background: #ff6b35;
    color: white;
}

/* 主要内容区域 */
main {
    margin-top: 70px;
}

/* Hero区域 */
.hero {
    background: linear-gradient(135deg, #ff6b35, #f7931e);
    color: white;
    padding: 80px 0;
    display: flex;
    align-items: center;
    min-height: 500px;
}

.hero-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.hero h1 {
    font-size: 48px;
    font-weight: bold;
    margin-bottom: 20px;
}

.hero-subtitle {
    font-size: 24px;
    margin-bottom: 15px;
    opacity: 0.9;
}

.hero-description {
    font-size: 18px;
    margin-bottom: 30px;
    opacity: 0.8;
}

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

.btn-primary, .btn-secondary {
    padding: 15px 30px;
    border-radius: 25px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    display: inline-block;
}

.btn-primary {
    background: white;
    color: #ff6b35;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

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

.btn-secondary:hover {
    background: white;
    color: #ff6b35;
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-logo {
    width: 300px;
    height: 300px;
    object-fit: contain;
    filter: drop-shadow(0 10px 25px rgba(0,0,0,0.2));
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-10px);
    }
}

.placeholder-image {
    font-size: 120px;
    opacity: 0.8;
}

/* 功能特色区域 */
.features {
    padding: 80px 0;
    background: #f8f9fa;
}

.features h2 {
    text-align: center;
    font-size: 36px;
    margin-bottom: 50px;
    color: #333;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.feature-card {
    background: white;
    padding: 40px 30px;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

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

.feature-icon {
    font-size: 48px;
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 24px;
    margin-bottom: 15px;
    color: #333;
}

.feature-card p {
    color: #666;
    line-height: 1.6;
}

/* 服务内容区域 */
.services {
    padding: 80px 0;
}

.services h2 {
    text-align: center;
    font-size: 36px;
    margin-bottom: 50px;
    color: #333;
}

.services-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 40px;
}

.service-item {
    background: #f8f9fa;
    padding: 30px;
    border-radius: 10px;
    border-left: 4px solid #ff6b35;
}

.service-item h3 {
    font-size: 24px;
    margin-bottom: 20px;
    color: #333;
}

.service-item ul {
    list-style: none;
}

.service-item li {
    padding: 8px 0;
    color: #666;
    position: relative;
    padding-left: 20px;
}

.service-item li:before {
    content: "✓";
    color: #ff6b35;
    font-weight: bold;
    position: absolute;
    left: 0;
}

/* 用户评价区域 */
.testimonials {
    padding: 80px 0;
    background: #f8f9fa;
}

.testimonials h2 {
    text-align: center;
    font-size: 36px;
    margin-bottom: 50px;
    color: #333;
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.testimonial-card {
    background: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.testimonial-card p {
    font-style: italic;
    margin-bottom: 20px;
    color: #555;
    font-size: 16px;
}

.user-info {
    color: #ff6b35;
    font-weight: 600;
}

/* 页脚样式 */
.footer {
    background: #333;
    color: white;
    padding: 50px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 30px;
}

.footer-section h3,
.footer-section h4 {
    margin-bottom: 20px;
    color: #ff6b35;
}

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

.footer-section ul li {
    margin-bottom: 10px;
}

.footer-section a {
    color: #ccc;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section a:hover {
    color: #ff6b35;
}

.footer-bottom {
    border-top: 1px solid #555;
    padding-top: 20px;
    text-align: center;
    color: #ccc;
}

.enterprise-info {
    margin-top: 15px;
    padding-top: 15px;
    border-top: 1px solid #555;
}

.enterprise-info small {
    color: #999;
    line-height: 1.4;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-container {
        flex-direction: column;
        height: auto;
        padding: 10px 20px;
    }
    
    .nav-logo {
        gap: 10px;
    }
    
    .logo-image {
        width: 40px;
        height: 40px;
    }
    
    .logo-text h1 {
        font-size: 24px;
    }
    
    .logo-text span {
        font-size: 12px;
    }
    
    .nav-menu {
        margin-top: 10px;
        gap: 15px;
    }
    
    main {
        margin-top: 140px;
    }
    
    .hero-logo {
        width: 200px;
        height: 200px;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero h1 {
        font-size: 36px;
    }
    
    .hero-subtitle {
        font-size: 20px;
    }
    
    .hero-buttons {
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .services-content {
        grid-template-columns: 1fr;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .testimonials-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
}

/* 页面内容样式 */
.page-header {
    background: linear-gradient(135deg, #ff6b35, #f7931e);
    color: white;
    padding: 120px 0 60px;
    margin-top: 70px;
    text-align: center;
}

.page-header h1 {
    font-size: 42px;
    margin-bottom: 15px;
}

.page-header p {
    font-size: 18px;
    opacity: 0.9;
}

.page-content {
    padding: 60px 0;
}

.content-section {
    margin-bottom: 40px;
}

.content-section h2 {
    color: #ff6b35;
    margin-bottom: 20px;
    font-size: 28px;
}

.content-section h3 {
    color: #333;
    margin-bottom: 15px;
    font-size: 22px;
}

.content-section p,
.content-section li {
    margin-bottom: 10px;
    line-height: 1.8;
    color: #555;
}

.content-section ul {
    padding-left: 20px;
}

/* 产品展示网格 */
.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
}

.product-card {
    background: white;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    overflow: hidden;
    transition: transform 0.3s ease;
}

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

.product-image {
    height: 200px;
    background: linear-gradient(45deg, #ff6b35, #f7931e);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 60px;
    color: white;
}

.product-info {
    padding: 25px;
}

.product-info h3 {
    color: #333;
    margin-bottom: 10px;
}

.product-info p {
    color: #666;
    margin-bottom: 15px;
}

.product-features {
    list-style: none;
}

.product-features li {
    padding: 5px 0;
    color: #555;
    position: relative;
    padding-left: 20px;
}

.product-features li:before {
    content: "•";
    color: #ff6b35;
    font-weight: bold;
    position: absolute;
    left: 0;
}

/* 联系表单样式 */
.contact-form {
    background: #f8f9fa;
    padding: 40px;
    border-radius: 10px;
    max-width: 600px;
    margin: 0 auto;
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: #333;
    font-weight: 500;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 16px;
    transition: border-color 0.3s ease;
    background-color: white;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: #ff6b35;
}

.form-group textarea {
    height: 120px;
    resize: vertical;
}

.submit-btn {
    background: #ff6b35;
    color: white;
    padding: 12px 30px;
    border: none;
    border-radius: 5px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.3s ease;
}

.submit-btn:hover {
    background: #e55a2b;
}

/* 联系信息网格 */
.contact-info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
}

.contact-info-card {
    background: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    text-align: center;
}

.contact-icon {
    font-size: 48px;
    margin-bottom: 20px;
    color: #ff6b35;
}

.contact-info-card h3 {
    margin-bottom: 15px;
    color: #333;
}

.contact-info-card p {
    color: #666;
}

/* 下载页面样式 */
.platform-detection {
    margin-bottom: 40px;
}

.platform-notice {
    background: linear-gradient(135deg, #ff6b35, #f7931e);
    color: white;
    padding: 20px;
    border-radius: 10px;
    text-align: center;
    margin-bottom: 20px;
    animation: slideIn 0.5s ease-out;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.platform-notice h3 {
    margin-bottom: 10px;
    font-size: 20px;
}

.platform-notice p {
    margin: 0;
    opacity: 0.9;
}

/* 下载卡片网格 */
.download-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
}

.download-card {
    background: white;
    border-radius: 15px;
    padding: 30px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    position: relative;
    overflow: hidden;
}

.download-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0,0,0,0.15);
}

.download-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #ff6b35, #f7931e);
}

.download-icon {
    font-size: 60px;
    margin-bottom: 20px;
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-10px);
    }
    60% {
        transform: translateY(-5px);
    }
}

.download-card h3 {
    color: #333;
    margin-bottom: 10px;
    font-size: 24px;
}

.download-card > p {
    color: #666;
    margin-bottom: 20px;
}

.download-info {
    display: flex;
    flex-direction: column;
    gap: 5px;
    margin-bottom: 25px;
    padding: 15px;
    background: #f8f9fa;
    border-radius: 8px;
}

.download-info span {
    color: #555;
    font-size: 14px;
}

.download-btn {
    background: linear-gradient(135deg, #ff6b35, #f7931e);
    color: white;
    border: none;
    padding: 15px 30px;
    border-radius: 25px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    margin: 0 auto 15px;
    transition: all 0.3s ease;
    min-width: 150px;
}

.download-btn:hover {
    background: linear-gradient(135deg, #e55a2b, #e08314);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(255,107,53,0.3);
}

.download-btn.disabled {
    background: #ccc;
    cursor: not-allowed;
}

.download-btn.disabled:hover {
    background: #ccc;
    transform: none;
    box-shadow: none;
}

.btn-icon {
    font-size: 18px;
}

.download-note {
    color: #999;
    font-size: 12px;
    margin: 0;
}

/* 二维码容器 */
.qr-code-container {
    margin: 20px 0;
}

.qr-code-placeholder {
    width: 150px;
    height: 150px;
    margin: 0 auto;
    border: 2px dashed #ddd;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #f8f9fa;
}

.qr-placeholder {
    text-align: center;
    color: #666;
}

.qr-placeholder p {
    margin: 10px 0 5px;
    font-weight: 600;
}

.qr-placeholder small {
    color: #999;
    font-size: 11px;
}

/* 真实二维码显示样式 */
.qr-code-display {
    text-align: center;
    margin: 0 auto;
}

.qr-code-image {
    width: 150px;
    height: 150px;
    border-radius: 10px;
    border: 1px solid #ddd;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    margin-bottom: 10px;
    object-fit: cover;
}

.qr-description {
    color: #666;
    font-size: 14px;
    margin: 0;
    font-weight: 500;
}

/* 网页版卡片 */
.web-version-card {
    background: white;
    border-radius: 15px;
    padding: 30px;
    display: flex;
    align-items: center;
    gap: 30px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    margin-bottom: 40px;
}

.web-icon {
    font-size: 60px;
    flex-shrink: 0;
}

.web-content h3 {
    color: #333;
    margin-bottom: 10px;
    font-size: 24px;
}

.web-content p {
    color: #666;
    margin-bottom: 20px;
}

.web-btn {
    background: linear-gradient(135deg, #ff6b35, #f7931e);
    color: white;
    padding: 12px 25px;
    border-radius: 20px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    display: inline-block;
}

.web-btn:hover {
    background: linear-gradient(135deg, #e55a2b, #e08314);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(255,107,53,0.3);
}

/* 功能对比表格 */
.feature-comparison {
    overflow-x: auto;
    margin-bottom: 40px;
}

.comparison-table {
    width: 100%;
    border-collapse: collapse;
    background: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.comparison-table thead {
    background: linear-gradient(135deg, #ff6b35, #f7931e);
    color: white;
}

.comparison-table th,
.comparison-table td {
    padding: 15px;
    text-align: center;
    border-bottom: 1px solid #eee;
}

.comparison-table th {
    font-weight: 600;
    font-size: 16px;
}

.comparison-table td:first-child {
    text-align: left;
    font-weight: 500;
    color: #333;
}

.feature-yes {
    color: #28a745;
    font-size: 18px;
}

.feature-partial {
    color: #ffc107;
    font-size: 18px;
}

.feature-no {
    color: #dc3545;
    font-size: 18px;
}

.comparison-table tbody tr:hover {
    background: #f8f9fa;
}

/* FAQ样式 */
.help-faq {
    display: grid;
    gap: 20px;
}

.faq-item {
    background: white;
    padding: 25px;
    border-radius: 10px;
    box-shadow: 0 3px 10px rgba(0,0,0,0.1);
    border-left: 4px solid #ff6b35;
}

.faq-item h3 {
    color: #ff6b35;
    margin-bottom: 10px;
    font-size: 18px;
}

.faq-item p {
    color: #555;
    line-height: 1.6;
    margin: 0;
}

/* 首页CTA下载区域 */
.download-cta {
    background: linear-gradient(135deg, #ff6b35, #f7931e);
    color: white;
    padding: 80px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.download-cta::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="20" cy="20" r="2" fill="rgba(255,255,255,0.1)"/><circle cx="80" cy="80" r="2" fill="rgba(255,255,255,0.1)"/></svg>');
    animation: float 20s linear infinite;
}

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

.download-cta h2 {
    font-size: 36px;
    margin-bottom: 15px;
    font-weight: bold;
}

.download-cta p {
    font-size: 18px;
    opacity: 0.9;
    margin-bottom: 40px;
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 30px;
    flex-wrap: wrap;
}

.cta-btn {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 15px 30px;
    border-radius: 25px;
    font-size: 16px;
    font-weight: 600;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
    min-width: 150px;
    justify-content: center;
}

.cta-btn.primary {
    background: white;
    color: #ff6b35;
}

.cta-btn.primary:hover {
    background: #f8f9fa;
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.2);
}

.cta-btn.secondary {
    background: rgba(255,255,255,0.2);
    color: white;
    border: 2px solid white;
}

.cta-btn.secondary:hover {
    background: white;
    color: #ff6b35;
    transform: translateY(-3px);
}

.platform-icons {
    display: flex;
    justify-content: center;
    gap: 30px;
    flex-wrap: wrap;
}

.platform-icon {
    font-size: 14px;
    opacity: 0.8;
    padding: 8px 15px;
    background: rgba(255,255,255,0.1);
    border-radius: 15px;
}

/* 模态弹窗样式 */
.modal {
    position: fixed;
    z-index: 10000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.5);
    backdrop-filter: blur(5px);
    animation: fadeIn 0.3s ease;
}

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

.modal-content {
    background-color: white;
    margin: 10% auto;
    padding: 30px;
    border-radius: 15px;
    width: 90%;
    max-width: 400px;
    position: relative;
    text-align: center;
    animation: slideInDown 0.3s ease;
}

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

.close {
    color: #aaa;
    float: right;
    font-size: 28px;
    font-weight: bold;
    position: absolute;
    right: 15px;
    top: 10px;
    cursor: pointer;
    transition: color 0.3s ease;
}

.close:hover {
    color: #ff6b35;
}

.modal h3 {
    color: #333;
    margin-bottom: 20px;
    font-size: 24px;
}

.modal-description {
    color: #666;
    margin-top: 20px;
    line-height: 1.6;
}

.modal-btn {
    background: linear-gradient(135deg, #ff6b35, #f7931e);
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-top: 10px;
    transition: all 0.3s ease;
}

.modal-btn:hover {
    background: linear-gradient(135deg, #e55a2b, #e08314);
    transform: translateY(-2px);
}

/* 响应式设计 - 下载页面 */
@media (max-width: 768px) {
    .download-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .download-card {
        padding: 20px;
    }
    
    .download-icon {
        font-size: 50px;
    }
    
    .web-version-card {
        flex-direction: column;
        text-align: center;
        gap: 20px;
    }
    
    .web-icon {
        font-size: 50px;
    }
    
    .comparison-table {
        font-size: 14px;
    }
    
    .comparison-table th,
    .comparison-table td {
        padding: 10px 8px;
    }
    
    .qr-code-placeholder {
        width: 120px;
        height: 120px;
    }
    
    .qr-code-image {
        width: 120px;
        height: 120px;
    }
    
    .platform-notice h3 {
        font-size: 18px;
    }
    
    .faq-item {
        padding: 20px;
    }
    
    .faq-item h3 {
        font-size: 16px;
    }
    
    /* CTA区域响应式 */
    .download-cta {
        padding: 60px 0;
    }
    
    .download-cta h2 {
        font-size: 28px;
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .platform-icons {
        gap: 15px;
    }
    
    .platform-icon {
        font-size: 12px;
        padding: 6px 12px;
    }
    
    .modal-content {
        margin: 20% auto;
        padding: 20px;
        width: 95%;
    }
}