.app-download-root {
    background: linear-gradient(135deg, #f5f7fc 0%, #eef2f8 100%);
}

/* 容器 */
.app-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 3rem 2rem;
}

@media (max-width: 768px) {
    .app-container {
        padding: 1.5rem 1.2rem;
    }
}

/* Hero 区域 */
.app-hero {
    display: grid;
    grid-template-columns: 1fr 0.9fr;
    gap: 3rem;
    align-items: center;
    margin-bottom: 5rem;
}

@media (max-width: 1024px) {
    .app-hero {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
    }
    .app-hero__media {
        display: flex;
        justify-content: center;
    }
}

.app-title {
    font-size: 3.5rem;
    font-weight: 800;
    background: linear-gradient(135deg, #1e293b, #2d3a5e);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    margin-bottom: 1rem;
}

.app-title__accent {
    background: linear-gradient(135deg, #4f46e5, #7c3aed);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.app-description {
    font-size: 1.2rem;
    color: #475569;
    margin-bottom: 1.5rem;
}

.app-download-buttons {
    display: flex;
    gap: 0.8rem;
    flex-wrap: wrap;
    margin-bottom: 2rem;
}

.app-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.4rem 0.9rem;
    border-radius: 40px;
    text-decoration: none;
    font-weight: 500;
    font-size: 0.8rem;
    transition: all 0.3s ease;
    cursor: pointer;
}

/* 按钮阴影恢复 */
.app-btn--primary {
    background: #0f172a;
    color: white;
    box-shadow: 0 2px 6px rgba(15, 23, 42, 0.1);
}

.app-btn--primary:hover {
    background: #1e293b;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(15, 23, 42, 0.15);
}

.app-btn--secondary {
    background: white;
    color: #1e293b;
    border: 1px solid #e2e8f0;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.02);
}

.app-btn--secondary:hover {
    background: #f8fafc;
    transform: translateY(-1px);
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.05);
}

.app-meta {
    display: flex;
    gap: 1rem;
    background: rgba(255,255,255,0.7);
    backdrop-filter: blur(2px);
    padding: 0.4rem 1rem;
    border-radius: 100px;
    width: fit-content;
    border: 1px solid rgba(0,0,0,0.05);
    box-shadow: 0 1px 3px rgba(0,0,0,0.02);
}

/* 轮播 */
.app-carousel {
    position: relative;
    width: 100%;
    background: #000;
    border-radius: 32px;
    overflow: hidden;
    box-shadow: 0 25px 40px -12px rgba(0,0,0,0.25);
}

.app-carousel-track {
    display: flex;
    overflow-x: hidden;
    scroll-behavior: smooth;
}

.app-carousel-slide {
    flex: 0 0 100%;
}

.app-carousel-slide img {
    width: 100%;
    height: auto;
    display: block;
}

.app-carousel-dots {
    position: absolute;
    bottom: 16px;
    left: 0;
    right: 0;
    display: flex;
    justify-content: center;
    gap: 10px;
    padding: 8px 0;
}

.app-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: #979797;
    cursor: pointer;
    transition: all 0.2s;
    border: none;
    padding: 0;
}

.app-dot.active {
    background: #000;
    width: 24px;
    border-radius: 5px;
}

@media (max-width: 768px) {
    .app-carousel-dots {
        bottom: 8px;
        gap: 6px;
    }
    .app-dot {
        width: 8px;
        height: 8px;
    }
    .app-dot.active {
        width: 18px;
    }
}

/* Section 头部 */
.app-section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.app-section-badge {
    background: #e0e7ff;
    padding: 0.2rem 1rem;
    border-radius: 60px;
    font-size: 0.8rem;
    font-weight: 600;
    color: #4f46e5;
    display: inline-block;
    margin-bottom: 1rem;
}

.app-section-title {
    font-size: 2.2rem;
    font-weight: 700;
    color: #0f172a;
    margin-bottom: 0.5rem;
}

.app-section-subtitle {
    color: #475569;
    font-size: 1.05rem;
}

/* 技术卡片网格 */
.app-features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.app-feature-card {
    background: rgba(255,255,255,0.7);
    backdrop-filter: blur(4px);
    border-radius: 24px;
    padding: 1.2rem;
    display: flex;
    gap: 1rem;
    align-items: center;
    transition: all 0.3s ease;
    border: 1px solid rgba(255,255,255,0.6);
    box-shadow: 0 2px 5px rgba(0,0,0,0.02);
}

.app-feature-card:hover {
    background: white;
    transform: translateY(-3px);
    box-shadow: 0 12px 20px -8px rgba(0,0,0,0.12);
}

.app-feature-icon {
    font-size: 2rem;
    color: #4f46e5;
    flex-shrink: 0;
}

.app-feature-content {
    flex: 1;
}

.app-feature-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.2rem;
    color: #0f172a;
}

.app-feature-desc {
    color: #475569;
    font-size: 0.8rem;
    line-height: 1.4;
}

/* 加载更多按钮 */
.app-more-btn {
    background: white;
    border: 1px solid #e2e8f0;
    padding: 0.5rem 1.5rem;
    border-radius: 40px;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: #4f46e5;
    font-weight: 500;
    transition: all 0.2s;
    box-shadow: 0 1px 2px rgba(0,0,0,0.02);
}

.app-more-btn:hover {
    background: #f8fafc;
    transform: translateY(-2px);
    box-shadow: 0 4px 10px rgba(0,0,0,0.05);
}

.app-more-wrapper {
    text-align: center;
    margin-top: 1rem;
}

/* FAQ 折叠 */
.app-faq {
    margin: 5rem 0;
}

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

.app-faq-item {
    background: white;
    border-radius: 20px;
    margin-bottom: 1rem;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0,0,0,0.03);
    transition: box-shadow 0.2s;
}

.app-faq-item:hover {
    box-shadow: 0 6px 14px rgba(0,0,0,0.06);
}

.app-faq-question {
    padding: 1.2rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    font-weight: 600;
    background: rgba(255,255,255,0.8);
    border-bottom: 1px solid #f1f5f9;
}

.app-faq-answer {
    padding: 0 1.5rem;
    max-height: 0;
    overflow: hidden;
    transition: all 0.3s ease;
    color: #475569;
    background: #fafcff;
}

.app-faq-item.open .app-faq-answer {
    padding: 1rem 1.5rem;
    max-height: 200px;
}

.app-faq-item.open .app-faq-toggle {
    transform: rotate(180deg);
}

.app-faq-toggle {
    transition: transform 0.2s;
}

@media (max-width: 768px) {
    .app-title {
        font-size: 2.4rem;
    }
    .app-section-title {
        font-size: 1.8rem;
    }
}