/* Claude.Asia - 营销风格设计 */

/* 重置和基础样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    color: #2d3748;
    background-color: #ffffff;
    overflow-x: hidden;
}

/* 导航栏样式 */
.navbar {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 15px 0;
}

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

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.2rem;
    font-weight: 600;
    color: #667eea;
}

.language-selector-container {
    position: relative;
}

/* 调整hero部分，为固定导航栏留出空间 */
.hero {
    margin-top: 60px;
}

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

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 80px 0;
    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,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="dots" width="20" height="20" patternUnits="userSpaceOnUse"><circle cx="10" cy="10" r="1.5" fill="rgba(255,255,255,0.1)"/></pattern></defs><rect width="100" height="100" fill="url(%23dots)"/></svg>');
}

.hero .container {
    position: relative;
    z-index: 2;
}

.hero-badge {
    display: inline-block;
    background: rgba(255, 255, 255, 0.2);
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50px;
    padding: 8px 20px;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 20px;
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 20px;
    line-height: 1.2;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
    font-size: 1.3rem;
    margin-bottom: 30px;
    opacity: 0.9;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.hero-features {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 15px;
    margin-bottom: 40px;
}

.feature-tag {
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 25px;
    padding: 10px 20px;
    font-size: 0.95rem;
    font-weight: 500;
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
}

.hero-cta {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 20px;
}

.cta-button {
    display: inline-block;
    padding: 15px 30px;
    border-radius: 8px;
    font-size: 1.1rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    will-change: transform;
}

.cta-button.primary {
    background: linear-gradient(135deg, #ff6b35 0%, #f7931e 100%);
    color: white;
    box-shadow: 0 4px 15px rgba(255, 107, 53, 0.4);
}

.cta-button.primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(255, 107, 53, 0.5);
}

.cta-button.secondary {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.3);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
}

.cta-button.secondary:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
}

.cta-button.large {
    padding: 18px 40px;
    font-size: 1.2rem;
}

/* 语言选择器 */
.language-selector {
    position: absolute;
    top: 20px;
    right: 20px;
    z-index: 1000;
}

.language-select {
    padding: 10px 16px;
    border: 2px solid rgba(255,255,255,0.3);
    border-radius: 8px;
    background: rgba(255,255,255,0.2);
    color: white;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    outline: none;
}

.language-select:hover {
    background: rgba(255,255,255,0.3);
    border-color: rgba(255,255,255,0.5);
}

.language-select option {
    background: white;
    color: #2d3748;
}

/* Sections */
section {
    padding: 80px 0;
}

section:nth-child(even) {
    background: #f8f9fa;
}

h2 {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 50px;
    color: #2d3748;
}

/* Experience Section */
.experience-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    max-width: 900px;
    margin: 0 auto;
}

.experience-card {
    background: white;
    border-radius: 16px;
    padding: 40px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    border: 2px solid transparent;
    will-change: transform;
}

.experience-card.highlight {
    border-color: #ff6b35;
    transform: scale(1.05);
    background: linear-gradient(135deg, #fff5f0 0%, #ffffff 100%);
}

.experience-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

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

.card-header h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 15px;
    color: #2d3748;
}

.price {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 5px;
}

.price-amount {
    font-size: 3rem;
    font-weight: 800;
    color: #ff6b35;
}

.price-period {
    font-size: 1.2rem;
    color: #718096;
    font-weight: 500;
}

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

.feature-list li {
    padding: 12px 0;
    font-size: 1rem;
    color: #4a5568;
    border-bottom: 1px solid #e2e8f0;
}

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

.plan-button {
    width: 100%;
    padding: 15px;
    border: none;
    border-radius: 8px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    background: #e2e8f0;
    color: #4a5568;
}

.plan-button.featured {
    background: linear-gradient(135deg, #ff6b35 0%, #f7931e 100%);
    color: white;
    box-shadow: 0 4px 15px rgba(255, 107, 53, 0.3);
}

.plan-button:hover {
    transform: translateY(-2px);
}

/* Ensure link buttons behave like buttons */
a.plan-button, a.cta-button {
    text-decoration: none;
    display: inline-block;
}

a.plan-button {
    text-align: center;
}

/* Comparison Section */
.comparison {
    background: #f8f9fa;
}

.comparison-desc {
    text-align: center;
    font-size: 1.1rem;
    color: #4a5568;
    margin-bottom: 40px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.comparison-table {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    max-width: 900px;
    margin: 0 auto;
}

.comparison-header {
    display: grid;
    grid-template-columns: 1fr 1fr 2fr;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    font-weight: 600;
    padding: 20px;
}

.comparison-row {
    display: grid;
    grid-template-columns: 1fr 1fr 2fr;
    padding: 20px;
    border-bottom: 1px solid #e2e8f0;
    transition: all 0.3s ease;
}

.comparison-row:hover {
    background: #f8f9fa;
}

.comparison-row.winner {
    background: linear-gradient(135deg, #fff5f0 0%, #ffffff 100%);
    border-left: 4px solid #ff6b35;
}

.model-name {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
}

.crown {
    font-size: 1.2rem;
}

.result.success {
    color: #22c55e;
    font-weight: 600;
}

.result.failed {
    color: #ef4444;
    font-weight: 600;
}

/* Advantages Section */
.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    max-width: 1000px;
    margin: 0 auto;
}

.advantage-card {
    background: white;
    padding: 40px;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.advantage-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.15);
}

.advantage-icon {
    font-size: 3rem;
    margin-bottom: 20px;
    display: block;
}

.advantage-card h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 15px;
    color: #2d3748;
}

.advantage-card p {
    color: #4a5568;
    line-height: 1.7;
}

/* Pain Points Section */
.pain-points {
    background: #fef2f2;
}

.pain-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 25px;
    max-width: 900px;
    margin: 0 auto;
}

.pain-item {
    display: flex;
    align-items: center;
    gap: 15px;
    background: white;
    padding: 25px;
    border-radius: 12px;
    border-left: 4px solid #ef4444;
    box-shadow: 0 4px 15px rgba(239, 68, 68, 0.1);
}

.pain-icon {
    font-size: 2rem;
}

/* Solutions Section */
.solutions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 25px;
    max-width: 1100px;
    margin: 0 auto;
}

.solution-card {
    background: white;
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    border-left: 4px solid #22c55e;
}

.solution-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

.solution-card h3 {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 15px;
    color: #2d3748;
}

.solution-card p {
    color: #4a5568;
    line-height: 1.6;
}

/* Case Study Section */
.case-study {
    background: linear-gradient(135deg, #f8f9fa 0%, #e2e8f0 100%);
}

.case-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.case-content p {
    font-size: 1.2rem;
    color: #4a5568;
    margin-bottom: 30px;
}

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

.case-result {
    background: white;
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    display: flex;
    align-items: center;
    gap: 15px;
    font-size: 1.1rem;
    font-weight: 600;
    color: #2d3748;
}

.case-icon {
    font-size: 2rem;
}

.case-conclusion {
    font-size: 1.3rem;
    font-weight: 600;
    color: #ff6b35;
    font-style: italic;
}

/* FAQ Section */
.faq {
    background: #f8f9fa;
}

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

.faq-item {
    background: white;
    margin-bottom: 16px;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.faq-question {
    padding: 25px;
    font-size: 1.1rem;
    font-weight: 600;
    color: #2d3748;
    background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
}

.faq-answer {
    padding: 25px;
    color: #4a5568;
    line-height: 1.7;
}

/* Contact Section */
.contact {
    background: white;
}

.contact p {
    text-align: center;
    font-size: 1.1rem;
    color: #4a5568;
    margin-bottom: 40px;
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
    max-width: 800px;
    margin: 0 auto;
}

.contact-item {
    background: #f8f9fa;
    padding: 30px;
    border-radius: 12px;
    text-align: center;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
    font-size: 1.1rem;
    font-weight: 600;
    color: #2d3748;
}

.contact-icon {
    font-size: 1.5rem;
}

/* Final CTA Section */
.final-cta {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    text-align: center;
}

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

.final-cta p {
    font-size: 1.2rem;
    margin-bottom: 40px;
    opacity: 0.9;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.final-buttons {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 20px;
}

/* Footer */
.footer {
    background: #2d3748;
    color: white;
    padding: 40px 0;
    text-align: center;
}

.footer p {
    margin-bottom: 20px;
    opacity: 0.8;
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 30px;
}

.footer-links a {
    color: white;
    text-decoration: none;
    opacity: 0.8;
    transition: opacity 0.3s ease;
}

.footer-links a:hover {
    opacity: 1;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .hero-features {
        flex-direction: column;
        align-items: center;
    }
    
    .hero-cta {
        flex-direction: column;
        align-items: center;
    }
    
    .language-selector {
        position: relative;
        top: 0;
        right: 0;
        margin: 20px 0;
        text-align: center;
    }
    
    .container {
        padding: 0 15px;
    }
    
    section {
        padding: 60px 0;
    }
    
    h2 {
        font-size: 2rem;
    }
    
    .experience-grid,
    .advantages-grid,
    .solutions-grid {
        grid-template-columns: 1fr;
    }
    
    .comparison-header,
    .comparison-row {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .comparison-header > div:not(:last-child),
    .comparison-row > div:not(:last-child) {
        border-bottom: 1px solid #e2e8f0;
        padding-bottom: 10px;
        margin-bottom: 10px;
    }
    
    .case-results {
        grid-template-columns: 1fr;
    }
    
    .final-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .footer-links {
        flex-direction: column;
        gap: 15px;
    }
}

/* 平滑滚动 */
html {
    scroll-behavior: smooth;
}

/* 选择文本样式 */
::selection {
    background: #ff6b35;
    color: white;
}

/* 改善的焦点状态 - 可访问性 */
.cta-button:focus,
.plan-button:focus {
    outline: 3px solid rgba(255, 107, 53, 0.5);
    outline-offset: 2px;
}

.nav-menu a:focus {
    outline: 2px solid #ff6b35;
    outline-offset: 4px;
    border-radius: 4px;
}

/* 隐藏类 */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}