/* 下载页面样式 */

.page-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 80px 0 60px;
    text-align: center;
    color: white;
}

.page-title {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 16px;
}

.page-subtitle {
    font-size: 20px;
    opacity: 0.9;
}

/* 下载主区域 */
.download-section {
    padding: 80px 0;
    background: #f8f9fa;
}

.download-hero {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    background: white;
    padding: 60px;
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.1);
}

.download-content {
    text-align: center;
}

.app-icon {
    width: 120px;
    height: 120px;
    margin: 0 auto 24px;
    border-radius: 24px;
    overflow: hidden;
    box-shadow: 0 8px 24px rgba(0,0,0,0.15);
}

.app-icon img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.app-name {
    font-size: 32px;
    font-weight: 700;
    color: #1a1a1a;
    margin-bottom: 12px;
}

.app-slogan {
    font-size: 18px;
    color: #666;
    margin-bottom: 32px;
}

.app-info {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-bottom: 40px;
    padding: 24px;
    background: #f8f9fa;
    border-radius: 12px;
}

.info-item {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.info-label {
    font-size: 14px;
    color: #666;
}

.info-value {
    font-size: 16px;
    font-weight: 600;
    color: #1a1a1a;
}

.download-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    margin-bottom: 24px;
}

.btn-download {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 16px 40px;
    font-size: 18px;
    font-weight: 600;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
}

.btn-download:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(102, 126, 234, 0.4);
}

.download-icon {
    width: 24px;
    height: 24px;
}

.qr-icon {
    width: 20px;
    height: 20px;
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 16px 32px;
    font-size: 16px;
    background: white;
    color: #667eea;
    border: 2px solid #667eea;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-secondary:hover {
    background: #667eea;
    color: white;
}

.download-tip {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-size: 14px;
    color: #666;
}

.tip-icon {
    width: 18px;
    height: 18px;
    color: #667eea;
}

/* 手机预览 */
.download-preview {
    display: flex;
    justify-content: center;
    align-items: center;
}

.phone-mockup {
    width: 280px;
    height: 560px;
    background: #1a1a1a;
    border-radius: 40px;
    padding: 12px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.3);
    position: relative;
}

.phone-mockup::before {
    content: '';
    position: absolute;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 6px;
    background: #333;
    border-radius: 3px;
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 32px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.phone-screen img {
    width: 60%;
    height: auto;
}

/* 功能特性 */
.features-section {
    padding: 80px 0;
    background: white;
}

.section-title {
    text-align: center;
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 60px;
    color: #1a1a1a;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.feature-card {
    padding: 32px;
    background: #f8f9fa;
    border-radius: 16px;
    text-align: center;
    transition: all 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 32px rgba(0,0,0,0.1);
}

.feature-icon {
    font-size: 48px;
    margin-bottom: 16px;
}

.feature-card h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 12px;
    color: #1a1a1a;
}

.feature-card p {
    font-size: 14px;
    color: #666;
    line-height: 1.6;
}

/* 安装指南 */
.guide-section {
    padding: 80px 0;
    background: #f8f9fa;
}

.guide-steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
    max-width: 1200px;
    margin: 0 auto;
}

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

.step-number {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: 700;
    margin: 0 auto 20px;
}

.step-content h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 12px;
    color: #1a1a1a;
}

.step-content p {
    font-size: 14px;
    color: #666;
    line-height: 1.6;
}

/* 常见问题 */
.faq-section {
    padding: 80px 0;
    background: white;
}

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

.faq-item {
    padding: 24px;
    background: #f8f9fa;
    border-radius: 12px;
    margin-bottom: 16px;
}

.faq-question {
    font-size: 18px;
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 12px;
}

.faq-answer {
    font-size: 15px;
    color: #666;
    line-height: 1.8;
}

/* 二维码模态框 */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.5);
}

.modal-content {
    background-color: white;
    margin: 10% auto;
    padding: 40px;
    border-radius: 20px;
    width: 400px;
    max-width: 90%;
    text-align: center;
    position: relative;
}

.close {
    position: absolute;
    right: 20px;
    top: 20px;
    font-size: 32px;
    font-weight: 300;
    color: #999;
    cursor: pointer;
    transition: color 0.3s;
}

.close:hover {
    color: #333;
}

.modal-content h3 {
    font-size: 24px;
    margin-bottom: 24px;
    color: #1a1a1a;
}

.qr-code {
    margin: 24px 0;
}

.qr-placeholder {
    width: 200px;
    height: 200px;
    margin: 0 auto;
    background: #f8f9fa;
    border: 2px dashed #ddd;
    border-radius: 12px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.qr-placeholder p {
    font-size: 14px;
    color: #666;
    margin-bottom: 12px;
}

.qr-url {
    font-size: 12px;
    color: #999;
    word-break: break-all;
}

.qr-url span {
    color: #667eea;
    font-weight: 600;
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .download-hero {
        grid-template-columns: 1fr;
        padding: 40px;
    }
    
    .download-preview {
        display: none;
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .guide-steps {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .page-title {
        font-size: 32px;
    }
    
    .page-subtitle {
        font-size: 16px;
    }
    
    .download-hero {
        padding: 24px;
    }
    
    .app-name {
        font-size: 24px;
    }
    
    .app-info {
        grid-template-columns: 1fr;
    }
    
    .download-buttons {
        flex-direction: column;
    }
    
    .btn-download,
    .btn-secondary {
        width: 100%;
        justify-content: center;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .guide-steps {
        grid-template-columns: 1fr;
    }
    
    .section-title {
        font-size: 28px;
    }
}