/* 全局样式 */
:root {
    --primary-color: #6366f1;
    --primary-hover: #4f46e5;
    --secondary-color: #64748b;
    --accent-color: #ec4899;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --light-bg: #f8fafc;
    --card-bg: #ffffff;
    --border-color: #e2e8f0;
    --text-color: #0f172a;
    --spacing-xs: 8px;
    --spacing-sm: 12px;
    --spacing-md: 20px;
    --spacing-lg: 30px;
    --spacing-xl: 50px;
    --border-radius-sm: 5px;
    --border-radius-md: 10px;
    --border-radius-lg: 15px;
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 10px 20px rgba(0, 0, 0, 0.12);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--light-bg);
    color: var(--text-color);
    line-height: 1.6;
}

h1, h2, h3, h4, h5, h6 {
    letter-spacing: -0.02em;
}

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

/* 头部导航 */
header {
    background-color: var(--card-bg);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 100;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) 0;
    min-height: 70px;
}

.logo {
    font-size: 24px;
    font-weight: bold;
    color: var(--primary-color);
    text-decoration: none;
    line-height: 1.5;
    display: flex;
    align-items: center;
}

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

.nav-links li {
    margin-left: 30px;
    display: flex;
    align-items: center;
}

.nav-links a {
    color: #333;
    text-decoration: none;
    font-weight: 500;
    font-size: 16px;
    line-height: 1.5;
    display: inline-block;
    vertical-align: middle;
    transition: color 0.3s ease;
}

.nav-links a:hover {
    color: var(--primary-color);
    text-decoration: underline;
    text-underline-offset: 4px;
    transform: translateY(-1px);
}

.nav-links a.active {
    color: var(--primary-color);
    text-decoration: underline;
    text-underline-offset: 4px;
    font-weight: 600;
}

/* 页面标题 */
.page-title {
    text-align: center;
    padding: var(--spacing-xl) 0;
    background-color: var(--card-bg);
    margin-bottom: var(--spacing-xl);
    box-shadow: var(--shadow-md);
}

.page-title h1 {
    font-size: 32px;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.page-title p {
    color: var(--secondary-color);
}

/* 卡片样式 */
.card {
    background-color: var(--card-bg);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    box-shadow: var(--shadow-md);
    transition: transform 0.3s cubic-bezier(0.25, 0.8, 0.25, 1), box-shadow 0.3s ease;
}

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

.card h2 {
    color: var(--primary-color);
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--border-color);
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 12px 24px;
    background-color: var(--primary-color);
    color: white;
    border-radius: 5px;
    text-decoration: none;
    font-weight: bold;
    transition: background-color 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 16px;
}

.btn:hover {
    background-color: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    transition: all 0.3s ease;
}

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

.btn-secondary:hover {
    background-color: #475569;
}

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

.btn-accent:hover {
    background-color: #db2777;
}

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

.btn-warning:hover {
    background-color: #d97706;
}

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

.btn-danger:hover {
    background-color: #dc2626;
}

/* 列表样式 */
ul, ol {
    margin-left: 20px;
    margin-bottom: 20px;
}

li {
    margin-bottom: 10px;
}

/* 表格样式 */
table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 20px;
}

table th, table td {
    padding: 12px 15px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

table th {
    background-color: #f1f5f9;
    font-weight: bold;
}

table tr:hover {
    background-color: #f8fafc;
}

/* 提示框样式 */
.tips {
    background-color: #fce7f3;
    border-left: 4px solid var(--accent-color);
    padding: 15px;
    margin: 20px 0;
    border-radius: 0 8px 8px 0;
}

.warning {
    background-color: #fff3cd;
    border-left: 4px solid var(--warning-color);
    padding: 15px;
    margin: 20px 0;
    border-radius: 0 8px 8px 0;
}

.danger {
    background-color: #f8d7da;
    border-left: 4px solid var(--danger-color);
    padding: 15px;
    margin: 20px 0;
    border-radius: 0 8px 8px 0;
}

/* 页脚样式 */
footer {
    background-color: #0f172a;
    color: white;
    padding: 50px 0 20px;
    margin-top: 50px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-lg);
    margin-bottom: 30px;
    width: 100%;
}

.footer-section {
    margin-bottom: 0;
}

/* 平板端响应式 */
@media (max-width: 992px) and (min-width: 769px) {
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* 移动端响应式 */
@media (max-width: 768px) {
    .footer-content {
        grid-template-columns: 1fr;
    }
}

.footer-section h3 {
    color: white;
    margin-bottom: 20px;
    font-size: 18px;
}

.footer-section ul {
    list-style: none;
    margin-left: 0;
}

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

.footer-section ul li a {
    color: #94a3b8;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section ul li a:hover {
    color: white;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #334155;
    color: #94a3b8;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background-color: var(--card-bg);
        flex-direction: column;
        box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
        z-index: 100;
    }

    .nav-links.active {
        display: flex;
    }
    
    .nav-links li {
        margin: 0;
        text-align: center;
    }
    
    .nav-links a {
        display: block;
        padding: 15px;
        border-bottom: 1px solid var(--border-color);
    }
    
    .menu-toggle {
        display: block;
    }
}

/* 移动端菜单按钮样式 */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    color: var(--primary-color);
    cursor: pointer;
    padding: 15px; /* Increase touch target */
}

/* Mobile Menu Bar */
.bar {
    display: block;
    width: 25px;
    height: 3px;
    margin: 5px auto;
    transition: all 0.3s ease;
    background-color: var(--text-color);
}

@media (max-width: 768px) {
    .menu-toggle {
        display: block;
    }
}
    
    .footer-section {
        flex-basis: 100%;
    }
    
    /* 适配移动设备的更多样式 */
    .download-card,
    .pricing-card,
    .feature {
        flex-basis: 100%;
    }
    
    .contact-info,
    .contact-form {
        flex-basis: 100%;
        margin-bottom: 30px;
    }
    
    .hero h1 {
        font-size: 36px;
    }
    
    .hero p {
        font-size: 16px;
    }
}

/* 地图容器样式 */
.map-container {
    width: 100%;
    height: 400px;
    border-radius: 10px;
    overflow: hidden;
}

.map-container iframe {
    width: 100%;
    height: 100%;
    border: none;
}

/* 下载页面样式 */
.download-options {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    margin-bottom: 30px;
}

.download-card {
    flex-basis: calc(33.333% - 20px);
    background-color: var(--card-bg);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-sm);
    text-align: center;
}

.download-card i {
    font-size: 48px;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.download-card h3 {
    margin-bottom: 10px;
}

.download-card p {
    color: var(--secondary-color);
    margin-bottom: 20px;
}

/* 教程页面样式 */
.tutorial-steps {
    counter-reset: step;
    margin-bottom: 30px;
}

.tutorial-step {
    position: relative;
    padding-left: 50px;
    margin-bottom: 30px;
}

.tutorial-step::before {
    counter-increment: step;
    content: counter(step);
    position: absolute;
    left: 0;
    top: 0;
    width: 36px;
    height: 36px;
    background-color: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-weight: bold;
}

.tutorial-step h3 {
    margin-bottom: 10px;
}

/* 购买页面样式 */
.pricing-cards {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    margin-bottom: 30px;
}

.pricing-card {
    flex-basis: calc(33.333% - 20px);
    background-color: var(--card-bg);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
    text-align: center;
}

.pricing-card h3 {
    margin-bottom: 10px;
}

.pricing-card .price {
    font-size: 24px;
    font-weight: bold;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.pricing-card ul {
    list-style: none;
    margin-left: 0;
    margin-bottom: 30px;
}

.pricing-card ul li {
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.pricing-card ul li i {
    color: var(--accent-color);
    margin-right: 10px;
}

/* 联系页面样式 */
.contact-content {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
}

.contact-info {
    flex-basis: calc(40% - 20px);
}

.contact-form {
    flex-basis: calc(60% - 20px);
}

.contact-item {
    margin-bottom: 20px;
    display: flex;
    align-items: center;
}

.contact-item i {
    width: 40px;
    height: 40px;
    background-color: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    margin-right: 15px;
    font-size: 18px;
}

.contact-item .info {
    flex: 1;
}

.contact-item h3 {
    color: #4b5563;
    margin-bottom: 5px;
    font-size: 18px;
}

.contact-item p {
    color: #6b7280;
}

.social-links {
    display: flex;
    margin-top: 30px;
}

.social-link {
    width: 40px;
    height: 40px;
    background-color: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    margin-right: 15px;
    text-decoration: none;
    transition: background-color 0.3s ease;
}

.social-link:hover {
    background-color: #3b5bdb;
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    color: #4b5563;
    font-weight: 500;
}

.form-control {
    width: 100%;
    padding: var(--spacing-sm);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    font-size: 16px;
    transition: border-color 0.3s ease;
}

.form-control:focus {
    border-color: var(--primary-color);
    outline: none;
}

textarea.form-control {
    min-height: 150px;
    resize: vertical;
}

/* FAQ页面样式 */
.faq-item {
    margin-bottom: 20px;
}

.faq-question {
    background-color: var(--card-bg);
    padding: 15px;
    border-radius: 5px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background-color 0.3s ease;
}

.faq-question:hover {
    background-color: #f1f5f9;
}

.faq-question h3 {
    margin: 0;
    font-size: 18px;
}

.faq-question i {
    transition: transform 0.3s ease;
}

.faq-answer {
    background-color: var(--card-bg);
    padding: 0 15px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
}

.faq-item.active .faq-answer {
    max-height: 5000px;
    padding: 15px;
}

.faq-item.active .faq-question i {
    transform: rotate(180deg);
}

/* 首页样式 */
.hero {
    background: linear-gradient(135deg, var(--primary-color), #8b5cf6);
    color: white;
    padding: var(--spacing-xl) 0;
    text-align: center;
}

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

.hero p {
    font-size: 20px;
    margin-bottom: 30px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.features {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    margin-bottom: var(--spacing-xl);
    gap: var(--spacing-md);
}

.feature {
    flex-basis: calc(33.333% - 20px);
    background-color: var(--card-bg);
    border-radius: 10px;
    padding: 30px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    text-align: center;
}

.feature i {
    font-size: 48px;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.feature h3 {
    margin-bottom: 15px;
}

.feature p {
    color: var(--secondary-color);
}

.testimonials {
    background-color: #f1f5f9;
    padding: 50px 0;
    margin-bottom: 50px;
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 25px;
    margin-top: 30px;
}

@media (max-width: 768px) {
    .testimonials-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 20px;
    }
}

@media (max-width: 480px) {
    .testimonials-grid {
        grid-template-columns: 1fr;
    }
}

.testimonial {
    background-color: var(--card-bg);
    border-radius: 10px;
    padding: 30px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.testimonial:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.testimonial p {
    margin-bottom: 20px;
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
}

.testimonial-author img {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    margin-right: 15px;
}

.testimonial-author .info h4 {
    margin: 0;
}

.testimonial-author .info p {
    margin: 0;
    color: var(--secondary-color);
    font-style: normal;
}

.cta {
    background-color: var(--primary-color);
    color: white;
    padding: 50px 0;
    text-align: center;
}

.cta h2 {
    margin-bottom: 20px;
}

.cta p {
    margin-bottom: 30px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

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

.cta .btn:hover {
    background-color: #f3f4f6;
}