* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 20px;
    color: #333;
}

.container {
    max-width: 600px;
    margin: 0 auto;
}

.app-card {
    background: #ffffff;
    border-radius: 20px;
    padding: 30px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

/* APP图标 */
.app-icon {
    text-align: center;
    margin-bottom: 20px;
}

.app-icon img {
    width: 120px;
    height: 120px;
    border-radius: 26px;
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
}

/* APP信息 */
.app-info {
    text-align: center;
    margin-bottom: 25px;
}

.app-name {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 8px;
    color: #1d1d1f;
}

.app-developer {
    font-size: 14px;
    color: #0066cc;
    margin-bottom: 10px;
}

.app-rating {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.rating-stars {
    color: #ff9500;
    font-size: 14px;
}

.rating-count {
    color: #86868b;
    font-size: 14px;
    font-weight: 600;
}

/* 下载按钮 */
.download-section {
    text-align: center;
    margin-bottom: 30px;
}

.download-btn {
    background: #0071e3;
    color: white;
    border: none;
    border-radius: 25px;
    padding: 12px 40px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    box-shadow: 0 4px 12px rgba(0, 113, 227, 0.3);
}

.download-btn:hover {
    background: #0077ed;
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0, 113, 227, 0.4);
}

.download-btn:active {
    transform: translateY(0);
}

.btn-icon {
    font-size: 20px;
}

.platform-info {
    margin-top: 12px;
    font-size: 13px;
    color: #86868b;
    font-weight: 500;
}

.platform-info.ios {
    color: #0066cc;
}

.platform-info.android {
    color: #3ddc84;
}

/* APP详情 */
.app-details {
    display: flex;
    justify-content: space-around;
    padding: 20px 0;
    border-top: 1px solid #e5e5e7;
    border-bottom: 1px solid #e5e5e7;
    margin-bottom: 25px;
}

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

.detail-label {
    font-size: 12px;
    color: #86868b;
    margin-bottom: 4px;
    text-transform: uppercase;
}

.detail-value {
    font-size: 18px;
    font-weight: 600;
    color: #1d1d1f;
}

/* APP截图 */
.screenshots-section {
    margin-bottom: 30px;
}

.screenshots-section h2 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 15px;
    color: #1d1d1f;
}

.screenshots {
    display: flex;
    gap: 15px;
    overflow-x: auto;
    padding-bottom: 10px;
    scroll-behavior: smooth;
}

.screenshots::-webkit-scrollbar {
    height: 6px;
}

.screenshots::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 10px;
}

.screenshots::-webkit-scrollbar-thumb {
    background: #c7c7c7;
    border-radius: 10px;
}

.screenshot {
    flex-shrink: 0;
}

.screenshot img {
    height: 400px;
    width: auto;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

/* APP描述 */
.description-section {
    margin-bottom: 30px;
}

.description-section h2 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 12px;
    color: #1d1d1f;
}

.description {
    font-size: 15px;
    line-height: 1.6;
    color: #1d1d1f;
}

/* 更新日志 */
.changelog-section h2 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 12px;
    color: #1d1d1f;
}

.version-info {
    font-size: 13px;
    color: #86868b;
    margin-bottom: 12px;
}

.changelog {
    list-style-position: inside;
    font-size: 15px;
    line-height: 1.8;
    color: #1d1d1f;
}

/* 响应式设计 */
@media (max-width: 640px) {
    body {
        padding: 10px;
    }

    .app-card {
        padding: 20px;
        border-radius: 15px;
    }

    .app-name {
        font-size: 24px;
    }

    .screenshot img {
        height: 350px;
    }
}