/* 基础重置和变量 */
:root {
    --primary-color: #007AFF;
    --primary-light: #8B5CF6;
    --accent-color: #FF6B6B;
    --secondary-color: #8E8E93;
    --background-color: #F2F2F7;
    --surface-color: #FFFFFF;
    --text-primary: #1D1D1F;
    --text-secondary: #6D6D80;
    --border-color: #E5E5EA;
    --shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
    --gradient-primary: linear-gradient(135deg, #007AFF, #8B5CF6);
    --gradient-accent: linear-gradient(135deg, #FF6B6B, #FF8E53);
    --gradient-background: linear-gradient(135deg, #F2F2F7, #E8E8ED);
    
    /* 蓝紫色渐变透明度变量 */
    --primary-alpha-05: rgba(139, 92, 246, 0.05);
    --primary-alpha-10: rgba(139, 92, 246, 0.1);
    --primary-alpha-15: rgba(139, 92, 246, 0.15);
    --primary-alpha-30: rgba(139, 92, 246, 0.3);
    --primary-alpha-40: rgba(139, 92, 246, 0.4);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--gradient-background);
    scroll-behavior: smooth;
}

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

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 15px 20px;
    max-width: 1200px;
    margin: 0 auto;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-icon {
    font-size: 28px;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo-text {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
}

.logo-image {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    object-fit: cover;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 30px;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
}

.nav-links a:hover {
    color: var(--primary-color);
}

.nav-cta {
    background: var(--gradient-primary) !important;
    color: white !important;
    padding: 10px 20px;
    border-radius: 25px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.nav-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px var(--primary-alpha-30);
}

/* 英雄区域 */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 100px;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-background);
    opacity: 0.8;
}

.hero-background::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, var(--primary-alpha-10) 0%, transparent 70%);
    animation: float 6s ease-in-out infinite;
}

.hero-content {
    position: relative;
    z-index: 10;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 24px;
}

.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 40px;
    line-height: 1.6;
}

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

.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 16px 32px;
    border-radius: 25px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s ease;
    cursor: pointer;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: 0 8px 25px var(--primary-alpha-30);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 35px var(--primary-alpha-40);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.9);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    backdrop-filter: blur(20px);
}

.btn-secondary:hover {
    background: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

/* 手机样机 */
.phone-mockup {
    position: relative;
    width: 300px;
    height: 600px;
    margin: 0 auto;
    background: linear-gradient(145deg, #1c1c1e, #2c2c2e);
    border-radius: 45px;
    padding: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    transform: rotate(5deg);
    transition: all 0.3s ease;
}

.phone-mockup:hover {
    transform: rotate(0deg) scale(1.05);
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: var(--surface-color);
    border-radius: 35px;
    overflow: hidden;
    position: relative;
}

.app-preview {
    padding: 20px;
    height: 100%;
    background: linear-gradient(to bottom, #f8f9fa, #e9ecef);
}

.chat-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 15px 20px;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    margin-bottom: 20px;
}

.ai-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--gradient-primary);
}

.status-indicator {
    width: 8px;
    height: 8px;
    background: #34C759;
    border-radius: 50%;
    margin-left: auto;
}

.chat-messages {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.message {
    max-width: 80%;
}

.user-message {
    align-self: flex-end;
}

.ai-message {
    align-self: flex-start;
}

.message-content {
    padding: 12px 16px;
    border-radius: 18px;
    font-size: 14px;
    line-height: 1.4;
}

.user-message .message-content {
    background: var(--gradient-primary);
    color: white;
}

.ai-message .message-content {
    background: rgba(255, 255, 255, 0.9);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.tool-call {
    margin-top: 10px;
    padding: 8px 12px;
    background: var(--primary-alpha-10);
    border-radius: 12px;
    font-size: 12px;
    display: flex;
    align-items: center;
    gap: 6px;
}

/* 功能特色 */
.features {
    padding: 120px 0;
    background: var(--surface-color);
}

.section-header {
    text-align: center;
    margin-bottom: 80px;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.section-subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
}

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

.feature-card {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: 24px;
    padding: 40px 30px;
    text-align: center;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.feature-card:hover::before {
    transform: scaleX(1);
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
}

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

.feature-title {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.feature-description {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* 服务展示 */
.services {
    padding: 120px 0;
    background: var(--gradient-background);
}

.services-categories {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
    margin-bottom: 60px;
}

.service-category {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(20px);
    border-radius: 24px;
    padding: 30px;
    border: 1px solid var(--border-color);
}

.category-title {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--text-primary);
}

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

.service-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.service-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    background: var(--primary-alpha-05);
    border-radius: 12px;
    transition: all 0.3s ease;
}

.service-item:hover {
    background: var(--primary-alpha-10);
    transform: translateX(5px);
}

.service-name {
    font-weight: 500;
    color: var(--text-primary);
}

.service-tag {
    font-size: 0.8rem;
    background: var(--gradient-primary);
    color: white;
    padding: 4px 12px;
    border-radius: 20px;
}

.services-highlight {
    text-align: center;
}

.highlight-card {
    display: inline-block;
    background: var(--gradient-accent);
    border-radius: 24px;
    padding: 40px 60px;
    color: white;
    max-width: 600px;
}

.highlight-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 12px;
}

.highlight-description {
    opacity: 0.9;
    line-height: 1.6;
}

/* 动态MCP服务 */
.dynamic-services {
    padding: 120px 0;
    background: linear-gradient(135deg, #f8f9ff, #f0f4ff);
}

.service-section-title {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 30px;
    text-align: center;
    justify-content: center;
}

.section-icon {
    font-size: 1.8rem;
}

.free-services-section,
.recommended-services-section {
    margin-bottom: 60px;
}

.mcp-services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 24px;
    margin-bottom: 40px;
}

.mcp-service-card {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 24px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.mcp-service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.mcp-service-card:hover::before {
    transform: scaleX(1);
}

.mcp-service-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 60px rgba(139, 92, 246, 0.15);
    border-color: var(--primary-alpha-15);
}

.mcp-service-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
}

.mcp-service-name {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.mcp-service-category {
    background: var(--gradient-primary);
    color: white;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
}

.mcp-service-description {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 20px;
    font-size: 0.95rem;
}



.free-service-badge {
    background: linear-gradient(135deg, #FF6B6B, #FF8E53);
}

.recommended-service-badge {
    background: var(--gradient-primary);
}

.loading-placeholder {
    grid-column: 1 / -1;
    text-align: center;
    padding: 60px 20px;
    color: var(--text-secondary);
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--border-color);
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 20px;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.error-message {
    grid-column: 1 / -1;
    text-align: center;
    padding: 40px 20px;
    color: #FF6B6B;
    background: rgba(255, 107, 107, 0.05);
    border: 1px solid rgba(255, 107, 107, 0.2);
    border-radius: 12px;
}

/* 定价 */
.pricing {
    padding: 120px 0;
    background: var(--surface-color);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.pricing-card {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(20px);
    border: 2px solid var(--border-color);
    border-radius: 24px;
    padding: 40px 30px;
    text-align: center;
    position: relative;
    transition: all 0.3s ease;
}

.pricing-card.featured {
    border-color: var(--primary-color);
    transform: scale(1.05);
}

.pricing-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
}

.pricing-card.featured:hover {
    transform: translateY(-10px) scale(1.05);
}

.pricing-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--gradient-primary);
    color: white;
    padding: 6px 20px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

.pricing-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.pricing-price {
    margin-bottom: 30px;
}

.currency {
    font-size: 1.2rem;
    vertical-align: top;
    color: var(--text-secondary);
}

.amount {
    font-size: 3rem;
    font-weight: 700;
    color: var(--text-primary);
}

.period {
    font-size: 1rem;
    color: var(--text-secondary);
}

.pricing-features {
    margin-bottom: 30px;
}

.pricing-features .feature {
    padding: 8px 0;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border-color);
}

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

.pricing-button {
    display: block;
    width: 100%;
    padding: 16px;
    background: var(--gradient-primary);
    color: white;
    text-decoration: none;
    border-radius: 12px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.pricing-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px var(--primary-alpha-30);
}

.pricing-note {
    text-align: center;
    color: var(--text-secondary);
    font-style: italic;
}

/* 下载区域 */
.download {
    padding: 120px 0;
    background: var(--gradient-primary);
    color: white;
    text-align: center;
}

.download-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 16px;
}

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

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

.download-btn {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 24px;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 16px;
    color: white;
    text-decoration: none;
    transition: all 0.3s ease;
    min-width: 200px;
}

.download-btn:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: translateY(-3px);
}

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

.btn-text {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.btn-label {
    font-size: 0.8rem;
    opacity: 0.8;
}

.btn-store {
    font-size: 1.1rem;
    font-weight: 600;
}

.download-note {
    opacity: 0.8;
    font-size: 0.9rem;
}

/* 服务群信息 */
.service-group {
    margin-top: 60px;
    text-align: center;
    padding: 40px 30px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 20px;
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.service-group-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: white;
    margin-bottom: 10px;
}

.service-group-subtitle {
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 30px;
    font-size: 1rem;
}

.qr-code-container {
    display: inline-block;
}

.qr-code {
    width: 200px;
    height: 200px;
    border-radius: 15px;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
    transition: all 0.3s ease;
}

.qr-code:hover {
    transform: scale(1.05);
    box-shadow: 0 12px 35px rgba(0, 0, 0, 0.3);
}

.qr-code-caption {
    margin-top: 15px;
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.9rem;
    font-weight: 500;
}

/* 页脚 */
.footer {
    background: var(--text-primary);
    color: white;
    padding: 80px 0 40px;
}

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

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 16px;
}

.footer-logo .logo-icon {
    font-size: 24px;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-logo .logo-text {
    font-size: 1.2rem;
    font-weight: 600;
}

.footer-logo-image {
    width: 28px;
    height: 28px;
    border-radius: 6px;
    object-fit: cover;
}

.footer-description {
    opacity: 0.8;
    line-height: 1.6;
}

.footer-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 16px;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 8px;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: all 0.3s ease;
}

.footer-links a:hover {
    color: white;
    transform: translateX(5px);
}

.footer-bottom {
    text-align: center;
    padding-top: 40px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    opacity: 0.6;
}

/* 动画 */
@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(2deg); }
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 40px;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .phone-mockup {
        width: 250px;
        height: 500px;
        transform: none;
    }
    
    .features-grid,
    .services-categories,
    .pricing-grid {
        grid-template-columns: 1fr;
    }
    
    .download-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .service-group {
        margin-top: 40px;
        padding: 30px 20px;
    }
    
    .qr-code {
        width: 150px;
        height: 150px;
    }
    
    .mcp-services-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    .mcp-service-card {
        padding: 20px;
    }
    
    .service-section-title {
        font-size: 1.3rem;
    }
    
    .dynamic-services {
        padding: 80px 0;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .container {
        padding: 0 16px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .btn {
        padding: 12px 24px;
        font-size: 0.9rem;
    }
    
    .feature-card,
    .service-category,
    .pricing-card {
        padding: 24px 20px;
    }
    
    .mcp-service-card {
        padding: 16px;
    }
    
    .mcp-service-name {
        font-size: 1.1rem;
    }
    

    
    .service-section-title {
        font-size: 1.2rem;
    }
}