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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f8f9fa;
}

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

/* Header */
header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 15px 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

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

.logo {
    font-size: 24px;
    font-weight: bold;
    text-decoration: none;
    color: white;
}

nav a {
    color: white;
    margin-left: 30px;
    text-decoration: none;
    transition: opacity 0.3s;
}

nav a:hover {
    opacity: 0.8;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 80px 20px;
    text-align: center;
}

.hero h1 {
    font-size: 48px;
    margin-bottom: 20px;
    font-weight: 700;
}

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

.page-hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 60px 20px;
    text-align: center;
}

.page-hero h1 {
    font-size: 42px;
    margin-bottom: 20px;
}

.page-hero p {
    font-size: 18px;
    max-width: 800px;
    margin: 0 auto;
}

/* Buttons */
.cta-button {
    display: inline-block;
    background-color: #ff6b6b;
    color: white;
    padding: 15px 40px;
    text-decoration: none;
    border-radius: 50px;
    font-size: 16px;
    font-weight: bold;
    transition: all 0.3s;
    margin: 0 10px;
    border: none;
    cursor: pointer;
}

.cta-button:hover {
    background-color: #ff5252;
    transform: translateY(-3px);
    box-shadow: 0 5px 20px rgba(0,0,0,0.2);
}

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

.cta-secondary:hover {
    background-color: rgba(255,255,255,0.3);
}

/* Badge */
.discount-badge {
    display: inline-block;
    background-color: #ff6b6b;
    color: white;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 14px;
    margin-bottom: 20px;
    font-weight: bold;
}

/* Content Sections */
.main-content {
    background: white;
    padding: 60px 20px;
}

.content-section {
    max-width: 900px;
    margin: 0 auto 60px;
}

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

.content-section h2 {
    font-size: 32px;
    margin-bottom: 20px;
    color: #333;
}

.content-section h3 {
    font-size: 22px;
    margin-top: 30px;
    margin-bottom: 15px;
    color: #667eea;
}

.content-section p {
    font-size: 16px;
    line-height: 1.8;
    margin-bottom: 15px;
    color: #666;
}

/* Grid Layouts */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-bottom: 50px;
}

.feature-card {
    background: white;
    border: 1px solid #e0e0e0;
    border-radius: 10px;
    padding: 30px;
    text-align: center;
    transition: all 0.3s;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
    border-color: #667eea;
}

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

.feature-card h3 {
    font-size: 20px;
    margin-bottom: 15px;
    color: #333;
}

.feature-card p {
    color: #666;
    line-height: 1.8;
}

/* Split Section */
.split-section {
    padding: 80px 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 50px;
}

.split-section:nth-child(even) .split-content {
    order: 2;
}

.split-image {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    height: 400px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 18px;
}

.split-content h2 {
    font-size: 32px;
    margin-bottom: 20px;
    color: #333;
}

.split-content p {
    color: #666;
    margin-bottom: 20px;
    line-height: 1.8;
}

.split-content ul {
    list-style: none;
    margin-bottom: 30px;
}

.split-content li {
    padding: 10px 0;
    color: #666;
    border-bottom: 1px solid #eee;
}

.split-content li:before {
    content: "✓ ";
    color: #667eea;
    font-weight: bold;
    margin-right: 10px;
}

/* Pricing Section */
.pricing-section {
    padding: 80px 20px;
    background: white;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    max-width: 1000px;
    margin: 0 auto;
}

.pricing-card {
    border: 2px solid #e0e0e0;
    border-radius: 10px;
    padding: 40px 30px;
    text-align: center;
    transition: all 0.3s;
}

.pricing-card.popular {
    border-color: #667eea;
    transform: scale(1.05);
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.2);
}

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

.price {
    font-size: 48px;
    color: #667eea;
    font-weight: bold;
    margin-bottom: 10px;
}

.price-period {
    color: #999;
    margin-bottom: 30px;
    font-size: 14px;
}

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

.pricing-features li {
    padding: 10px 0;
    border-bottom: 1px solid #eee;
    color: #666;
}

.pricing-features li:before {
    content: "✓ ";
    color: #667eea;
    font-weight: bold;
    margin-right: 10px;
}

/* FAQ Section */
.faq-section {
    background-color: #f8f9fa;
    padding: 80px 20px;
}

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

.faq-item {
    background: white;
    margin-bottom: 20px;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.faq-question {
    padding: 20px;
    background: #f5f5f5;
    cursor: pointer;
    font-weight: bold;
    color: #333;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background 0.3s;
}

.faq-question:hover {
    background: #e8e8e8;
}

.faq-question.active {
    background: #667eea;
    color: white;
}

.faq-toggle {
    font-size: 20px;
}

.faq-answer {
    padding: 20px;
    color: #666;
    display: none;
    border-top: 1px solid #eee;
    line-height: 1.8;
}

.faq-answer.active {
    display: block;
}

/* Blog Grid */
.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
}

.blog-card {
    background: white;
    border: 1px solid #e0e0e0;
    border-radius: 10px;
    overflow: hidden;
    transition: all 0.3s;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.blog-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
    border-color: #667eea;
}

.blog-image {
    height: 200px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 48px;
}

.blog-content {
    padding: 25px;
}

.blog-category {
    display: inline-block;
    background: #667eea;
    color: white;
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 12px;
    margin-bottom: 10px;
    font-weight: bold;
}

.blog-title {
    font-size: 20px;
    color: #333;
    margin-bottom: 10px;
    line-height: 1.4;
}

.blog-excerpt {
    color: #666;
    font-size: 14px;
    margin-bottom: 15px;
    line-height: 1.6;
}

.blog-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: #999;
    font-size: 12px;
}

.read-more {
    color: #667eea;
    text-decoration: none;
    font-weight: bold;
    cursor: pointer;
}

.read-more:hover {
    text-decoration: underline;
}

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

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

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 14px;
    font-family: inherit;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

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

.submit-btn {
    background-color: #ff6b6b;
    color: white;
    padding: 12px 30px;
    border: none;
    border-radius: 5px;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s;
    width: 100%;
}

.submit-btn:hover {
    background-color: #ff5252;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

/* Footer */
.footer {
    background: #333;
    color: white;
    text-align: center;
    padding: 40px 20px;
}

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

.footer a {
    color: #667eea;
    text-decoration: none;
}

.footer a:hover {
    text-decoration: underline;
}

/* Utility Classes */
.text-center {
    text-align: center;
}

.mt-30 {
    margin-top: 30px;
}

.mb-30 {
    margin-bottom: 30px;
}

.feature-box {
    background: #f8f9fa;
    border-left: 4px solid #667eea;
    padding: 20px;
    margin: 20px 0;
    border-radius: 5px;
}

.feature-box h4 {
    color: #667eea;
    margin-bottom: 10px;
    font-size: 18px;
}

.feature-box p {
    margin: 0;
    color: #666;
}

.comparison-table {
    width: 100%;
    border-collapse: collapse;
    margin: 30px 0;
}

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

.comparison-table th {
    background: #667eea;
    color: white;
}

.comparison-table tr:hover {
    background: #f5f5f5;
}

/* Legal Content */
.legal-content {
    max-width: 900px;
    margin: 0 auto;
}

.legal-content h2 {
    font-size: 24px;
    margin: 30px 0 20px;
    color: #333;
}

.legal-content h3 {
    font-size: 18px;
    margin: 20px 0 10px;
    color: #667eea;
}

.legal-content p {
    margin-bottom: 15px;
    color: #666;
    line-height: 1.8;
}

.legal-content ul {
    margin-left: 20px;
    margin-bottom: 15px;
}

.legal-content li {
    margin-bottom: 8px;
    color: #666;
}

.update-date {
    background: #f5f5f5;
    padding: 20px;
    border-radius: 5px;
    margin-bottom: 30px;
    border-left: 4px solid #667eea;
}

.response-time {
    background: #e8f5e9;
    border-left: 4px solid #4caf50;
    padding: 15px;
    margin-top: 30px;
    border-radius: 5px;
}

.response-time p {
    color: #2e7d32;
    margin: 5px 0;
}

/* Contact Wrapper */
.content-wrapper {
    max-width: 1000px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
}

.contact-info h2 {
    font-size: 28px;
    margin-bottom: 30px;
    color: #333;
}

.contact-method {
    margin-bottom: 30px;
    padding-bottom: 30px;
    border-bottom: 1px solid #eee;
}

.contact-method:last-child {
    border-bottom: none;
}

.contact-method h3 {
    color: #667eea;
    margin-bottom: 10px;
    font-size: 18px;
}

.contact-method p {
    color: #666;
    margin-bottom: 8px;
}

.contact-method a {
    color: #667eea;
    text-decoration: none;
    font-weight: bold;
}

.contact-method a:hover {
    text-decoration: underline;
}

.form-section h2 {
    font-size: 28px;
    margin-bottom: 30px;
    color: #333;
}

/* Team Grid */
.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin: 40px 0;
}

.team-member {
    background: white;
    border: 1px solid #e0e0e0;
    border-radius: 10px;
    padding: 30px;
    text-align: center;
}

.team-member h3 {
    font-size: 18px;
    margin-bottom: 5px;
    color: #333;
}

.team-member p {
    color: #667eea;
    margin-bottom: 10px;
    font-weight: bold;
}

.team-member .bio {
    color: #666;
    font-size: 14px;
}

/* Mission Grid */
.mission-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin: 40px 0;
}

.mission-card {
    background: #f8f9fa;
    padding: 30px;
    border-radius: 10px;
    text-align: center;
    border-left: 4px solid #667eea;
}

.mission-card h3 {
    font-size: 20px;
    margin-bottom: 15px;
    color: #667eea;
}

/* Timeline */
.timeline {
    max-width: 700px;
    margin: 40px auto;
}

.timeline-item {
    padding-left: 40px;
    margin-bottom: 30px;
    position: relative;
}

.timeline-item:before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    width: 20px;
    height: 20px;
    background: #667eea;
    border-radius: 50%;
    border: 3px solid white;
    box-shadow: 0 0 0 3px #667eea;
}

.timeline-item:after {
    content: '';
    position: absolute;
    left: 7px;
    top: 20px;
    width: 6px;
    height: 30px;
    background: #ddd;
}

.timeline-item:last-child:after {
    display: none;
}

.timeline-year {
    font-size: 18px;
    font-weight: bold;
    color: #667eea;
    margin-bottom: 5px;
}

.timeline-text {
    color: #666;
}

/* Responsive */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
    }
    
    nav {
        margin-top: 15px;
    }
    
    nav a {
        margin-left: 15px;
        font-size: 14px;
    }
    
    .hero h1 {
        font-size: 32px;
    }
    
    .hero p {
        font-size: 16px;
    }
    
    .page-hero h1 {
        font-size: 28px;
    }
    
    .split-section {
        grid-template-columns: 1fr;
    }
    
    .split-image {
        height: 300px;
    }
    
    .pricing-card.popular {
        transform: scale(1);
    }
    
    .split-section:nth-child(even) .split-content {
        order: 1;
    }
    
    .content-wrapper {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .blog-grid {
        grid-template-columns: 1fr;
    }
    
    .comparison-table {
        font-size: 14px;
    }
    
    .comparison-table th,
    .comparison-table td {
        padding: 10px;
    }
}