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

:root {
    --primary-color: #ff6b35;
    --primary-dark: #e55a2b;
    --primary-light: #ff8c5a;
    --secondary-color: #ffb347;
    --text-dark: #333333;
    --text-gray: #666666;
    --text-light: #999999;
    --bg-light: #fafafa;
    --bg-white: #ffffff;
    --border-color: #e0e0e0;
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-large: 0 4px 16px rgba(255, 107, 53, 0.15);
    --radius: 8px;
    --radius-large: 16px;
    --max-width: 1200px;
}

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

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 20px;
}

/* 导航栏 */
.navbar {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow);

}

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

.nav-brand img {
height:70px;
}

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

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

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

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
}

.nav-toggle span {
    width: 25px;
    height: 2px;
    background: var(--text-dark);
    transition: 0.3s;
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 12px 32px;
    font-size: 16px;
    font-weight: 600;
    text-decoration: none;
    border-radius: var(--radius);
    transition: all 0.3s;
    cursor: pointer;
    border: 2px solid transparent;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-large);
}

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

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

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

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

.btn-large {
    padding: 16px 48px;
    font-size: 18px;
}

/* 英雄区域 */
.hero {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    padding: 100px 0;
    color: white;
}

.hero-content {
    text-align: center;
}

.hero-title {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 20px;
}

.hero-subtitle {
    font-size: 20px;
    opacity: 0.95;
    margin-bottom: 40px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    margin-bottom: 60px;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 60px;
    margin-top: 60px;
}

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

.stat-number {
    display: block;
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 8px;
}

.stat-label {
    font-size: 16px;
    opacity: 0.9;
}

/* 核心优势 */
.features {
    padding: 80px 0;
    background: var(--bg-light);
}

.section-title {
    font-size: 36px;
    font-weight: 700;
    text-align: center;
    margin-bottom: 12px;
    color: var(--text-dark);
}

.section-subtitle {
    font-size: 18px;
    text-align: center;
    color: var(--text-gray);
    margin-bottom: 60px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.feature-card {
    background: white;
    padding: 40px 30px;
    border-radius: var(--radius-large);
    text-align: center;
    transition: all 0.3s;
    box-shadow: var(--shadow);
}

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

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

.feature-card h3 {
    font-size: 20px;
    margin-bottom: 12px;
    color: var(--text-dark);
}

.feature-card p {
    color: var(--text-gray);
    font-size: 15px;
}

/* 产品展示 */
.showcase {
    padding: 80px 0;
}

.showcase-image {
    display: flex;
    justify-content: center;
}

.dashboard-preview {
    width: 100%;
    max-width: 900px;
    background: white;
    border-radius: var(--radius-large);
    overflow: hidden;
    box-shadow: var(--shadow-large);
}

.preview-header {
    background: #f0f0f0;
    padding: 15px;
}

.preview-dots {
    display: flex;
    gap: 8px;
}

.preview-dots span {
    width: 12px;
    height: 12px;
    background: #ddd;
    border-radius: 50%;
}

.preview-dots span:first-child {
    background: #ff5f57;
}

.preview-dots span:nth-child(2) {
    background: #ffbd2e;
}

.preview-dots span:nth-child(3) {
    background: #28ca42;
}

.preview-content {
    display: flex;
    min-height: 400px;
}

.preview-sidebar {
    width: 200px;
    background: #fafafa;
    padding: 20px;
    border-right: 1px solid var(--border-color);
}

.sidebar-item {
    height: 16px;
    background: #e0e0e0;
    border-radius: 4px;
    margin-bottom: 20px;
}

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

.preview-main {
    flex: 1;
    padding: 20px;
}

.preview-chart {
    height: 200px;
    background: linear-gradient(180deg, rgba(255, 107, 53, 0.1) 0%, rgba(255, 107, 53, 0) 100%);
    border-radius: var(--radius);
    margin-bottom: 20px;
    border: 2px dashed var(--primary-color);
}

.preview-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.stat-box {
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    border-radius: var(--radius);
}

/* 客户评价 */
.testimonials {
    padding: 80px 0;
    background: var(--bg-light);
}

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

.testimonial-card {
    background: white;
    padding: 30px;
    border-radius: var(--radius-large);
    box-shadow: var(--shadow);
}

.testimonial-rating {
    color: var(--secondary-color);
    font-size: 20px;
    margin-bottom: 15px;
}

.testimonial-text {
    color: var(--text-gray);
    margin-bottom: 20px;
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 15px;
}

.author-avatar {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 600;
    font-size: 20px;
}

.author-info h4 {
    font-size: 16px;
    margin-bottom: 4px;
}

.author-info p {
    font-size: 14px;
    color: var(--text-gray);
}

/* CTA区域 */
.cta {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    padding: 80px 0;
    text-align: center;
    color: white;
}

.cta h2 {
    font-size: 36px;
    margin-bottom: 12px;
}

.cta p {
    font-size: 18px;
    opacity: 0.95;
    margin-bottom: 30px;
}

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

.cta .btn-primary:hover {
    background: var(--bg-light);
    color: var(--primary-dark);
}

/* 页脚 */
.footer {
    background: #1a1a1a;
    color: white;
    padding: 60px 0 20px;
}

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

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

.footer-section img {
    height:100px;
}

.footer-section p {
    color: #999;
    font-size: 14px;
}

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

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

.footer-section a {
    color: #999;
    text-decoration: none;
    transition: color 0.3s;
}

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

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

.social-link {
    display: inline-block;
    padding: 8px 16px;
    background: rgba(255, 107, 53, 0.2);
    border-radius: var(--radius);
    color: var(--primary-color);
    text-decoration: none;
    transition: all 0.3s;
}

.social-link:hover {
    background: var(--primary-color);
    color: white;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #333;
    color: #666;
    font-size: 14px;
}

/* 页面标题 */
.page-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    padding: 80px 0;
    text-align: center;
    color: white;
}

.page-header h1 {
    font-size: 36px;
    margin-bottom: 12px;
}

.page-header p {
    font-size: 18px;
    opacity: 0.95;
}

/* 功能介绍页面 */
.feature-section {
    padding: 80px 0;
}

.feature-section-alt {
    background: var(--bg-light);
}

.feature-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.feature-badge {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(255, 107, 53, 0.1);
    color: var(--primary-color);
    border-radius: 20px;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 15px;
}

.feature-text h2 {
    font-size: 32px;
    margin-bottom: 15px;
}

.feature-text > p {
    font-size: 16px;
    color: var(--text-gray);
    margin-bottom: 25px;
}

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

.feature-list li {
    padding: 8px 0;
    color: var(--text-gray);
    font-size: 15px;
}

.visual-card {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    padding: 60px;
    border-radius: var(--radius-large);
    text-align: center;
    color: white;
    box-shadow: var(--shadow-large);
}

.visual-icon {
    font-size: 64px;
    margin-bottom: 20px;
}

.visual-card h3 {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 8px;
}

.visual-card p {
    font-size: 18px;
    opacity: 0.95;
}

/* 价格页面 */
.pricing {
    padding: 60px 0;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    max-width: 1000px;
    margin: 0 auto;
}

.pricing-card {
    background: white;
    border-radius: var(--radius-large);
    padding: 40px 30px;
    box-shadow: var(--shadow);
    position: relative;
    transition: all 0.3s;
}

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

.pricing-card-popular {
    border: 2px solid var(--primary-color);
}

.popular-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary-color);
    color: white;
    padding: 6px 20px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 600;
}

.pricing-header {
    text-align: center;
    margin-bottom: 30px;
}

.pricing-header h3 {
    font-size: 24px;
    margin-bottom: 8px;
}

.pricing-subtitle {
    color: var(--text-gray);
    margin-bottom: 20px;
}

.pricing-price {
    margin-bottom: 10px;
}

.currency {
    font-size: 24px;
    color: var(--primary-color);
    font-weight: 600;
}

.amount {
    font-size: 48px;
    color: var(--primary-color);
    font-weight: 700;
}

.period {
    font-size: 16px;
    color: var(--text-gray);
}

.pricing-note {
    font-size: 14px;
    color: var(--text-light);
}

.pricing-features {
    list-style: none;
    margin-bottom: 30px;
}

.feature-item {
    padding: 10px 0;
    color: var(--text-gray);
    font-size: 15px;
    border-bottom: 1px solid var(--border-color);
}

.feature-item:last-child {
    border-bottom: none;
}

.feature-item.disabled {
    color: var(--text-light);
}

.pricing-card .btn {
    width: 100%;
    display: block;
    text-align: center;
}

/* 常见问题 */
.faq {
    padding: 80px 0;
    background: var(--bg-light);
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: white;
    border-radius: var(--radius);
    margin-bottom: 15px;
    box-shadow: var(--shadow);
    overflow: hidden;
}

.faq-question {
    width: 100%;
    padding: 20px 25px;
    background: none;
    border: none;
    text-align: left;
    font-size: 16px;
    font-weight: 600;
    color: var(--text-dark);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.faq-icon {
    font-size: 24px;
    color: var(--primary-color);
    transition: transform 0.3s;
}

.faq-question[aria-expanded="true"] .faq-icon {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-answer p {
    padding: 0 25px 20px;
    color: var(--text-gray);
    line-height: 1.8;
}

.faq-question[aria-expanded="true"] + .faq-answer {
    max-height: 500px;
}

/* 版本更新 */
.changelog {
    padding: 60px 0;
}

.changelog-timeline {
    max-width: 900px;
    margin: 0 auto;
}

.changelog-item {
    display: grid;
    grid-template-columns: 150px 1fr;
    gap: 40px;
    margin-bottom: 40px;
    position: relative;
}

.changelog-item::before {
    content: '';
    position: absolute;
    left: 75px;
    top: 0;
    bottom: -40px;
    width: 2px;
    background: var(--border-color);
}

.changelog-item:last-child::before {
    display: none;
}

.changelog-date {
    text-align: right;
    padding-top: 10px;
}

.date {
    display: block;
    font-size: 14px;
    color: var(--text-gray);
    margin-bottom: 8px;
}

.version {
    display: inline-block;
    padding: 6px 16px;
    background: var(--primary-color);
    color: white;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 600;
}

.changelog-content {
    background: white;
    padding: 30px;
    border-radius: var(--radius-large);
    box-shadow: var(--shadow);
}

.changelog-content h3 {
    margin-bottom: 20px;
    color: var(--text-dark);
}

.changelog-tag {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 600;
    margin-right: 10px;
    margin-bottom: 10px;
}

.changelog-tag.new {
    background: #d4edda;
    color: #155724;
}

.changelog-tag.improved {
    background: #cce5ff;
    color: #004085;
}

.changelog-tag.fixed {
    background: #f8d7da;
    color: #721c24;
}

.changelog-content ul {
    list-style: none;
    margin-bottom: 20px;
}

.changelog-content ul li {
    padding: 6px 0;
    color: var(--text-gray);
    font-size: 14px;
    padding-left: 20px;
    position: relative;
}

.changelog-content ul li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--primary-color);
}

.changelog-footer {
    text-align: center;
    margin-top: 40px;
}

.changelog-legend {
    padding: 40px 0;
    background: var(--bg-light);
}

.legend-items {
    display: flex;
    justify-content: center;
    gap: 40px;
    flex-wrap: wrap;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    color: var(--text-gray);
}

/* 响应式设计 */
@media (max-width: 992px) {
    .hero-title {
        font-size: 40px;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 30px;
    }
    
    .feature-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .feature-visual {
        order: -1;
    }
    
    .pricing-grid {
        max-width: 600px;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: 20px;
        box-shadow: var(--shadow);
        gap: 15px;
    }
    
    .nav-menu.active {
        display: flex;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .hero {
        padding: 60px 0;
    }
    
    .hero-title {
        font-size: 32px;
    }
    
    .hero-subtitle {
        font-size: 16px;
    }
    
    .hero-buttons {
        flex-direction: column;
        gap: 15px;
    }
    
    .hero-buttons .btn {
        width: 100%;
    }
    
    .section-title {
        font-size: 28px;
    }
    
    .features-grid,
    .testimonials-grid {
        grid-template-columns: 1fr;
    }
    
    .changelog-item {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .changelog-item::before {
        display: none;
    }
    
    .changelog-date {
        text-align: left;
    }
    
    .legend-items {
        flex-direction: column;
        gap: 15px;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 24px;
    }
    
    .hero-subtitle {
        font-size: 14px;
    }
    
    .stat-number {
        font-size: 28px;
    }
    
    .cta h2 {
        font-size: 28px;
    }
    
    .pricing-card {
        padding: 30px 20px;
    }
    
    .amount {
        font-size: 36px;
    }
}