/* ================================
   快客加速器 QuickQ - SEO营销推广版本
   ================================ */

/* CSS变量定义 */
:root {
    --primary: #007bff;
    --primary-dark: #0056b3;
    --secondary: #28a745;
    --accent: #ff6b35;
    --text: #2c3e50;
    --text-light: #6c757d;
    --bg: #ffffff;
    --bg-alt: #f8f9fa;
    --border: #e9ecef;
    --shadow: 0 4px 6px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 25px rgba(0,0,0,0.15);
    --radius: 12px;
    --transition: all 0.3s ease;
}

/* 重置样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--text);
    background: var(--bg);
}

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

/* ================================
   头部导航栏
   ================================ */
.quickq-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 80px;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
    z-index: 1000;
}

.quickq-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 700;
    color: var(--primary);
}

.brand-icon { font-size: 24px; }
.brand-text { font-size: 20px; }
.brand-subtitle { font-size: 14px; color: var(--text-light); }

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

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

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

/* ================================
   英雄区域
   ================================ */
.hero-quickq {
    padding: 140px 0 80px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    text-align: center;
}

.quickq-badge {
    display: inline-block;
    background: rgba(255,255,255,0.2);
    padding: 8px 20px;
    border-radius: 25px;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 20px;
}

.quickq-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    margin-bottom: 16px;
}

.quickq-subtitle {
    font-size: clamp(1.2rem, 3vw, 1.8rem);
    margin-bottom: 20px;
    opacity: 0.9;
}

.quickq-description {
    font-size: 18px;
    max-width: 800px;
    margin: 0 auto 40px;
    opacity: 0.9;
}

.quickq-metrics {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 30px;
    margin: 50px auto;
    max-width: 600px;
}

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

.metric-number {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 8px;
}

.metric-label {
    font-size: 14px;
    opacity: 0.8;
}

.quickq-actions {
    display: flex;
    gap: 20px;
    justify-content: center;
    margin: 40px 0;
    flex-wrap: wrap;
}

.quickq-btn {
    padding: 16px 32px;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    min-width: 180px;
}

.quickq-btn.primary {
    background: linear-gradient(135deg, #ff6b35 0%, #f7931e 100%);
    color: white;
    box-shadow: var(--shadow);
}

.quickq-btn.primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.quickq-btn.secondary {
    background: rgba(255,255,255,0.2);
    color: white;
    border: 2px solid rgba(255,255,255,0.3);
}

.quickq-btn.secondary:hover {
    background: rgba(255,255,255,0.3);
}

.trust-indicators {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 40px;
}

.trust-item {
    font-size: 14px;
    opacity: 0.9;
    font-weight: 500;
}

/* ================================
   功能特色区域
   ================================ */
.features-section,
.download-section,
.pricing-section,
.reviews-section,
.faq-section {
    padding: 80px 0;
}

.download-section,
.reviews-section {
    background: var(--bg-alt);
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    text-align: center;
    margin-bottom: 16px;
}

.section-desc {
    font-size: 18px;
    text-align: center;
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto 60px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

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

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

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

.feature-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 16px;
}

.feature-card p {
    color: var(--text-light);
    margin-bottom: 20px;
}

.feature-tags {
    display: flex;
    gap: 8px;
    justify-content: center;
    flex-wrap: wrap;
}

.tag {
    background: var(--primary);
    color: white;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 500;
}

/* ================================
   下载区域
   ================================ */
.download-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.download-card {
    background: white;
    padding: 30px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    transition: var(--transition);
    position: relative;
}

.download-card.featured {
    border: 2px solid var(--primary);
    transform: scale(1.05);
}

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

.download-card.featured:hover {
    transform: scale(1.05) translateY(-5px);
}

.popular-badge {
    position: absolute;
    top: -10px;
    right: 20px;
    background: var(--primary);
    color: white;
    padding: 5px 15px;
    border-radius: 15px;
    font-size: 12px;
    font-weight: 600;
}

.platform-header {
    text-align: center;
    margin-bottom: 25px;
}

.platform-icon {
    font-size: 3rem;
    margin-bottom: 15px;
    display: block;
}

.platform-header h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 10px;
}

.platform-desc {
    color: var(--text-light);
    margin-bottom: 15px;
}

.platform-specs {
    display: flex;
    justify-content: space-between;
    margin-bottom: 20px;
}

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

.download-btn {
    width: 100%;
    padding: 15px;
    background: var(--primary);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    margin-bottom: 10px;
}

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

.download-note {
    text-align: center;
    font-size: 12px;
    color: var(--text-light);
}

.download-benefits {
    margin-top: 60px;
    text-align: center;
}

.download-benefits h3 {
    font-size: 1.5rem;
    margin-bottom: 30px;
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.benefit-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 15px;
    background: white;
    border-radius: 8px;
    box-shadow: var(--shadow);
}

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

.benefit-text {
    font-weight: 500;
}

/* ================================
   价格方案区域
   ================================ */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.pricing-card {
    background: white;
    padding: 40px 30px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    transition: var(--transition);
    position: relative;
    text-align: center;
}

.pricing-card.featured {
    border: 2px solid var(--primary);
    transform: scale(1.05);
}

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

.pricing-card.featured:hover {
    transform: scale(1.05) translateY(-5px);
}

.popular-label {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary);
    color: white;
    padding: 8px 20px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 600;
}

.plan-header h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 15px;
}

.price {
    display: flex;
    align-items: baseline;
    justify-content: center;
    margin-bottom: 10px;
}

.currency {
    font-size: 1.2rem;
    color: var(--text-light);
}

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

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

.plan-desc {
    color: var(--text-light);
    margin-bottom: 30px;
}

.plan-features {
    margin-bottom: 30px;
    text-align: left;
}

.feature {
    padding: 10px 0;
    border-bottom: 1px solid var(--border);
}

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

.plan-btn {
    width: 100%;
    padding: 15px;
    background: var(--primary);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

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

/* ================================
   用户评价区域
   ================================ */
.reviews-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

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

.review-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.review-header {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 20px;
}

.reviewer-avatar {
    font-size: 2.5rem;
}

.reviewer-info h4 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 5px;
}

.reviewer-title {
    font-size: 14px;
    color: var(--text-light);
    margin-bottom: 8px;
}

.review-rating {
    font-size: 16px;
}

.review-content {
    color: var(--text-light);
    font-style: italic;
}

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

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

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 8px;
}

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

/* ================================
   常见问题区域
   ================================ */
.faq-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 30px;
}

.faq-item {
    background: white;
    padding: 30px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    border-left: 4px solid var(--primary);
}

.faq-item h3 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 15px;
}

.faq-item p {
    color: var(--text-light);
}

/* ================================
   友情链接区域
   ================================ */
.partners-section {
    padding: 40px 0;
    background: var(--bg-alt);
    border-top: 1px solid var(--border);
}

.partners-section h3 {
    text-align: center;
    margin-bottom: 30px;
    font-size: 1.2rem;
}

.partners-grid {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}

.partner-link {
    padding: 8px 16px;
    background: white;
    border: 1px solid var(--border);
    border-radius: 8px;
    text-decoration: none;
    color: var(--text-light);
    font-size: 14px;
    transition: var(--transition);
}

.partner-link:hover {
    color: var(--primary);
    border-color: var(--primary);
    transform: translateY(-2px);
}

/* ================================
   页脚区域
   ================================ */
.quickq-footer {
    background: var(--text);
    color: white;
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 60px;
    margin-bottom: 40px;
}

.footer-brand .brand-info {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
}

.footer-brand .brand-icon {
    font-size: 28px;
}

.footer-brand .brand-text {
    font-size: 24px;
    font-weight: 700;
}

.footer-brand p {
    color: rgba(255,255,255,0.8);
    margin-bottom: 10px;
}

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

.link-group h4 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 20px;
}

.link-group a {
    display: block;
    color: rgba(255,255,255,0.7);
    text-decoration: none;
    margin-bottom: 12px;
    transition: var(--transition);
}

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

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 30px;
    text-align: center;
}

.footer-bottom p {
    color: rgba(255,255,255,0.6);
    font-size: 14px;
    margin-bottom: 10px;
}

/* ================================
   响应式设计
   ================================ */
@media (max-width: 768px) {
    .nav-menu { display: none; }
    
    .hero-quickq {
        padding: 120px 0 60px;
    }
    
    .quickq-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .quickq-btn {
        width: 100%;
        max-width: 300px;
    }
    
    .trust-indicators {
        flex-direction: column;
        align-items: center;
        gap: 15px;
    }
    
    .features-grid,
    .download-grid,
    .pricing-grid,
    .reviews-grid,
    .faq-grid {
        grid-template-columns: 1fr;
    }
    
    .download-card.featured,
    .pricing-card.featured {
        transform: none;
    }
    
    .review-stats {
        flex-direction: column;
        gap: 30px;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
        gap: 30px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .quickq-metrics {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    
    .feature-card,
    .download-card,
    .pricing-card,
    .review-card,
    .faq-item {
        padding: 25px 20px;
    }
    
    .benefits-grid {
        grid-template-columns: 1fr;
    }
}

/* ================================
   可访问性支持
   ================================ */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

@media (prefers-contrast: high) {
    :root {
        --text: #000000;
        --text-light: #333333;
        --border: #666666;
    }
}

/* ================================
   打印样式
   ================================ */
@media print {
    .quickq-header,
    .quickq-actions,
    .partners-section,
    .quickq-footer {
        display: none;
    }
    
    .hero-quickq {
        background: white;
        color: black;
    }
    
    * {
        box-shadow: none !important;
    }
}