/* 单列布局样式 - 1:1 复刻图片设计 */
:root {
    --primary-green: #4CAF50;
    --dark-green: #2E7D32;
    --light-green: #C8E6C9;
    --bg-gradient: linear-gradient(135deg, #d8f3da 0%, #cff0d2 50%, #caf5ce 100%);
    --text-dark: #2E7D32;
    --text-accent: #4CAF50;
    --text-secondary: #616161;
    --white: #ffffff;
}

/* 单列布局基础样式 */
.single-column-layout {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 2rem;
    background: var(--bg-gradient);
}

.content-wrapper {
    max-width: 70%;
    margin: 0 auto;
    width: 100%;
}

/* 主视觉区域样式 */
.hero-section.single-column-layout {
    background: var(--bg-gradient);
    
}

/* 圆形图标样式 */
.central-icon {
    width: 120px;
    height: 120px;
    background: linear-gradient(135deg, var(--primary-green) 0%, var(--dark-green) 100%);
    border-radius: 50%;
    margin: 0 auto 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 8px 25px rgba(76, 175, 80, 0.3);
}

.icon-ring {
    width: 80px;
    height: 80px;
    background: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.icon-core {
    width: 40px;
    height: 40px;
    background: var(--light-green);
    border-radius: 50%;
}

/* 标题文字样式 */
.main-heading {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 1rem;
    line-height: 1.3;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

.accent-text {
    color: var(--text-accent);
}

/* 说明文字样式 */
.description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 2.5rem;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}
.benefits-grid {
    display: flex;
    gap: 20px;
    margin-top: 30px;
}
/* 主按钮样式 */
.cta-button {
    padding: 16px 40px;
    background: linear-gradient(135deg, var(--primary-green) 0%, var(--dark-green) 100%);
    color: var(--white);
    border: none;
    border-radius: 30px;
    font-weight: 600;
    font-size: 1.2rem;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    box-shadow: 0 4px 15px rgba(76, 175, 80, 0.4);
    margin: 0 auto;
    display: block;
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(76, 175, 80, 0.5);
}

/* 功能演示区域样式 */
.demo-section.single-column-layout {
    background: var(--white);
    min-height: auto;
    padding: 4rem 2rem;
}

.section-heading {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 1rem;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

.section-description {
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 2rem;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

/* 聊天界面样式 */
.chat-interface {
    max-width: 800px;
    margin: 2rem auto 0;
    background: #f8f9fa;
    border-radius: 12px;
    padding: 1.5rem;
}

.message {
    display: flex;
    margin-bottom: 1rem;
}

.message:last-child {
    margin-bottom: 0;
}

.message.user {
    justify-content: flex-start;
}

.message.ai {
    justify-content: flex-start;
}

.message-text {
    background: var(--white);
    padding: 1rem;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    max-width: 70%;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .single-column-layout {
        padding: 1rem;
        min-height: 80vh;
    }
    
    .main-heading {
        font-size: 2rem;
    }
    
    .central-icon {
        width: 100px;
        height: 100px;
        margin-bottom: 1.5rem;
    }
    
    .icon-ring {
        width: 70px;
        height: 70px;
    }
    
    .icon-core {
        width: 35px;
        height: 35px;
    }
    
    .cta-button {
        padding: 14px 32px;
        font-size: 1.1rem;
    }
    
    .demo-section.single-column-layout {
        padding: 2rem 1rem;
    }
    
    .section-heading {
        font-size: 1.5rem;
    }
}

/* 动画效果 */
.fade-in {
    animation: fadeIn 0.8s ease-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 确保所有元素垂直居中 */
.single-column-layout > * {
    margin: 0 auto;
}

/* 清除浮动和确保正确布局 */
.single-column-layout::after {
    content: '';
    display: table;
    clear: both;
}

/* 双列布局样式 */
.two-column-section {
    width: 100%;
    max-width: 70%;
    margin: 50px auto;
    padding: 50px 20px;
    background: linear-gradient(135deg, #E8F5E9 0%, #F1F8E9 100%);
    border-radius: 20px;
}

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

.text-column {
    text-align: left;
}

.text-column h2 {
    font-size: 2.2rem;
    font-weight: 700;
    color: #2E7D32;
    margin-bottom: 1.5rem;
    line-height: 1.3;
}

.feature-item {
    margin-bottom: 2rem;
}

.feature-item h3 {
    font-size: 1.4rem;
    font-weight: 600;
    color: #2E7D32;
    margin-bottom: 0.5rem;
}

.feature-item p {
    font-size: 1.1rem;
    color: #616161;
    line-height: 1.6;
    margin-bottom: 1rem;
}

.feature-item:last-child {
    margin-bottom: 2.5rem;
}

.cta-button-secondary {
    padding: 14px 36px;
    background: linear-gradient(135deg, #4CAF50 0%, #388E3C 100%);
    color: white;
    border: none;
    border-radius: 25px;
    font-weight: 600;
    font-size: 1.1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(76, 175, 80, 0.3);
    display: inline-block;
}

.cta-button-secondary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(76, 175, 80, 0.4);
}

.image-column {
    text-align: center;
}

.image-column img {
    width: 100%;
    max-width: 500px;
    height: auto;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

/* 第二版双列布局样式 */
.video-column {
    position: relative;
}

.video-player {
    position: relative;
    margin-bottom: 2rem;
}

.video-thumbnail {
    width: 100%;
    border-radius: 12px;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.play-button {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 60px;
    height: 60px;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: #ff0000;
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.comments-section {
    background: #f8f9fa;
    border-radius: 12px;
    padding: 1.5rem;
}

.comment {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
    padding: 1rem;
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.comment:last-child {
    margin-bottom: 0;
}

.comment-avatar {
    width: 40px;
    height: 40px;
    background: #e3f2fd;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    flex-shrink: 0;
}

.comment-content {
    flex: 1;
}

.comment-text {
    color: #333;
    margin-bottom: 0.5rem;
    line-height: 1.4;
}

.comment-likes {
    color: #666;
    font-size: 0.9rem;
}

/* 右侧功能区域 */
.features-column {
    padding: 1rem;
}

.features-title {
    font-size: 2rem;
    font-weight: 700;
    color: #2E7D32;
    margin-bottom: 1rem;
}

.features-description {
    font-size: 1.1rem;
    color: #616161;
    line-height: 1.6;
    margin-bottom: 2rem;
}

.feature-list {
    margin-bottom: 2.5rem;
}

.feature-item {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
    align-items: flex-start;
}

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

.feature-icon {
    width: 24px;
    height: 24px;
    background: #4CAF50;
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    flex-shrink: 0;
    margin-top: 0.2rem;
}

.feature-content {
    flex: 1;
}

.feature-name {
    font-size: 1.2rem;
    font-weight: 600;
    color: #2E7D32;
    margin-bottom: 0.5rem;
}

.feature-desc {
    font-size: 1rem;
    color: #616161;
    line-height: 1.5;
}

/* 响应式设计 */
@media (max-width: 1980px) {
    two-column-section
    {
     max-width: 96%;
    }

}


@media (max-width: 768px) {
    .two-column-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .two-column-section {
        padding: 30px 15px;
        margin: 30px auto;
    }
    
    .text-column h2 {
        font-size: 1.8rem;
    }
    
    .feature-item h3 {
        font-size: 1.2rem;
    }
    
    .feature-item p {
        font-size: 1rem;
    }
    
    .image-column img {
        max-width: 100%;
    }
    
    .features-title {
        font-size: 1.6rem;
    }
    
    .feature-item {
        flex-direction: column;
        gap: 0.8rem;
    }
    
    .play-button {
        width: 50px;
        height: 50px;
        font-size: 1.2rem;
    }
}

/* FAQ展开/收缩动画 */
.faq-container {
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem;
}

.faq-item {
    margin-bottom: 1rem;
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid #e0e0e0;
    transition: all 0.3s ease;
}

.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.5rem;
    background: #f8f9fa;
    cursor: pointer;
    font-weight: 600;
    color: #2E7D32;
    transition: all 0.2s ease;
}

.faq-question:hover {
    background: #e9f5e9;
}

.faq-question span:last-child {
    transition: transform 0.3s ease;
    color: #4CAF50;
}

.faq-item.active .faq-question span:last-child {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    padding: 0 1.5rem;
    background: white;
    transition: all 0.3s ease;
    line-height: 1.6;
    color: #616161;
}

.faq-item.active .faq-answer {
    max-height: 500px;
    padding: 1rem 1.5rem;
}

/* FAQ响应式优化 */
@media (max-width: 768px) {
    .faq-container {
        padding: 1rem;
    }
    
    .faq-question {
        padding: 0.8rem 1rem;
    }
    
    .faq-answer {
        padding: 0 1rem;
    }
    
    .faq-item.active .faq-answer {
        padding: 0.8rem 1rem;
    }
}

/* 产品展示区域样式 */
.products-section {
    padding: 4rem 0;
    background: linear-gradient(135deg, #E8F5E9 0%, #F1F8E9 100%);
}

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

.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-title {
    font-size: 2.2rem;
    color: #2E7D32;
    margin-bottom: 1rem;
}

.highlight {
    color: #4CAF50;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 2rem;
}

.product-card {
    background: white;
    border-radius: 12px;
    padding: 1.5rem;
    display: flex;
    align-items: center;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}

.product-icon {
    font-size: 2rem;
    margin-right: 1.5rem;
    color: #4CAF50;
}

.product-content {
    flex: 1;
}

.product-title {
    font-size: 1.2rem;
    color: #2E7D32;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.product-description {
    font-size: 0.9rem;
    color: #616161;
    line-height: 1.5;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .products-grid {
        grid-template-columns: 1fr;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .product-card {
        padding: 1.2rem;
    }
    
    .product-icon {
        font-size: 1.8rem;
        margin-right: 1rem;
    }
}