/* 页面头部 - APP下载专用背景 */
.page-header {
    background:
            linear-gradient(rgba(10, 25, 60, 0.9), rgba(5, 15, 35, 0.95)),
            url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="200" height="200" viewBox="0 0 200 200"><defs><pattern id="appPattern" width="50" height="50" patternUnits="userSpaceOnUse"><rect width="50" height="50" fill="none" stroke="%234285f4" stroke-width="2"/><circle cx="25" cy="25" r="15" fill="none" stroke="%2334a853" stroke-width="1"/><path d="M10,10 L40,40 M40,10 L10,40" stroke="%23fbbc05" stroke-width="1"/></pattern></defs><rect width="100%" height="100%" fill="%230f1b3d"/><rect width="100%" height="100%" fill="url(%23appPattern)"/><circle cx="150" cy="50" r="30" fill="none" stroke="%23ea4335" stroke-width="1" stroke-dasharray="5,5"/></svg>');
    background-size: cover;
    color: white;
    padding: 150px 0 80px;
    text-align: center;
    position: relative;
    overflow: hidden;
    margin-top: 70px;
}

.page-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
            radial-gradient(circle at 10% 20%, rgba(66, 133, 244, 0.4) 0%, transparent 40%),
            radial-gradient(circle at 90% 80%, rgba(52, 168, 83, 0.4) 0%, transparent 40%),
            radial-gradient(circle at 50% 50%, rgba(251, 188, 5, 0.3) 0%, transparent 50%);
    z-index: 0;
}

.page-header-content {
    position: relative;
    z-index: 1;
}

.page-header h1 {
    font-size: 3.5rem;
    margin-bottom: 20px;
    line-height: 1.2;
}

.page-header p {
    font-size: 1.2rem;
    max-width: 700px;
    margin: 0 auto;
    opacity: 0.9;
}

/* 面包屑导航 */
.breadcrumb {
    background-color: var(--light-color);
    padding: 15px 0;
    margin-bottom: 40px;
}

.breadcrumb-content {
    display: flex;
    align-items: center;
    font-size: 0.9rem;
}

.breadcrumb a {
    color: var(--gray-color);
    text-decoration: none;
    transition: color 0.3s;
}

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

.breadcrumb span {
    margin: 0 8px;
    color: var(--gray-color);
}

.breadcrumb .current {
    color: var(--primary-color);
    font-weight: 500;
}

/* APP下载主内容 */
.app-download-content {
    display: flex;
    align-items: center;
    gap: 60px;
    margin-bottom: 80px;
}

.app-preview {
    flex: 1;
    text-align: center;
}

.phone-mockup {
    position: relative;
    width: 300px;
    height: 600px;
    margin: 0 auto;
    background: linear-gradient(135deg, #1a237e 0%, #3949ab 100%);
    border-radius: 40px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
}

.phone-screen {
    width: 216px;
    height: 516px;
    background: var(--dark-color);
    border-radius: 30px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 30px;
    text-align: center;
}

.app-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.app-icon i {
    font-size: 2.5rem;
    color: white;
}

.app-name {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 10px;
    color: white;
}

.app-version {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 30px;
}

.app-info {
    flex: 1;
}

.app-info h2 {
    font-size: 2.5rem;
    margin-bottom: 20px;
    color: var(--dark-color);
}

.app-info p {
    color: var(--gray-color);
    margin-bottom: 25px;
    font-size: 1.1rem;
    line-height: 1.7;
}

.app-features {
    margin: 30px 0;
}

.feature-item {
    display: flex;
    align-items: center;
    margin-bottom: 15px;
}

.feature-icon {
    width: 40px;
    height: 40px;
    background-color: rgba(26, 115, 232, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 15px;
    flex-shrink: 0;
}

.feature-icon i {
    font-size: 1.2rem;
    color: var(--primary-color);
}

.feature-text {
    color: var(--gray-color);
}

/* 下载方式区域 */
.download-options {
    display: flex;
    gap: 40px;
    margin-top: 40px;
}

.download-option {
    flex: 1;
    background: white;
    border-radius: 12px;
    padding: 30px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    text-align: center;
    transition: transform 0.3s;
}

.download-option:hover {
    transform: translateY(-5px);
}

.option-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.option-icon i {
    font-size: 2rem;
    color: white;
}

.option-title {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--dark-color);
}

.option-description {
    color: var(--gray-color);
    margin-bottom: 25px;
    line-height: 1.6;
}

.qr-code {
    width: 180px;
    height: 180px;
    background: #f5f5f5;
    border-radius: 12px;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray-color);
    font-size: 0.9rem;
}

.qr-code i {
    font-size: 3rem;
    margin-bottom: 10px;
}

.direct-download {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.download-button {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    background-color: var(--primary-color);
    color: white;
    padding: 15px 25px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: background-color 0.3s;
}

.download-button:hover {
    background-color: var(--secondary-color);
}

.download-button.secondary {
    background-color: var(--light-color);
    color: var(--dark-color);
}

.download-button.secondary:hover {
    background-color: #e8eaed;
}

/* APP功能特性 */
.app-features-section {
    background-color: var(--light-color);
    padding: 80px 0;
}

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

.feature-card {
    background: white;
    border-radius: 12px;
    padding: 30px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s;
    text-align: center;
}

.feature-card:hover {
    transform: translateY(-5px);
}

.feature-card-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.feature-card-icon i {
    font-size: 1.8rem;
    color: white;
}

.feature-card h3 {
    font-size: 1.4rem;
    margin-bottom: 15px;
    color: var(--dark-color);
}

.feature-card p {
    color: var(--gray-color);
    line-height: 1.6;
}

/* 用户评价 */
.testimonials-section {
    margin-bottom: 80px;
}

.testimonials-slider {
    display: flex;
    gap: 30px;
    overflow-x: auto;
    padding: 20px 0;
    scrollbar-width: thin;
}

.testimonials-slider::-webkit-scrollbar {
    height: 6px;
}

.testimonials-slider::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 3px;
}

.testimonial-card {
    min-width: 350px;
    background: white;
    border-radius: 12px;
    padding: 30px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.testimonial-content {
    color: var(--gray-color);
    font-style: italic;
    margin-bottom: 20px;
    line-height: 1.6;
}

.testimonial-author {
    display: flex;
    align-items: center;
}

.author-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--light-color);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 15px;
    color: var(--primary-color);
    font-weight: 600;
}

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

.author-info p {
    color: var(--gray-color);
    font-size: 0.9rem;
}