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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background: linear-gradient(180deg, #a840e0 0%, #2057b2 100%);
    color: white;
}

.language-switcher {
    position: absolute;
    top: 20px;
    right: 20px;
    z-index: 100;
}

#languageSelect {
    padding: 6px 12px;
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 16px;
    background: rgba(255, 255, 255, 0.2);
    font-size: 13px;
    color: white;
    cursor: pointer;
    outline: none;
    backdrop-filter: blur(10px);
}

.container {
    max-width: 1200px;
    margin: auto;
    padding: 30px 20px;
    text-align: center;
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.logo {
    width: 80px;
    height: 80px;
    margin-bottom: 20px;
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.1));
}

.content {
    max-width: 600px;
    margin: 0 auto;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 30px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}

.download-section {
    margin-bottom: 30px;
}

.divider {
    height: 1px;
    background: rgba(255, 255, 255, 0.1);
    margin: 30px 0;
    width: 100%;
}

.intro-section {
    margin-top: 20px;
}

.title {
    font-size: 1.5rem;
    color: white;
    margin-bottom: 15px;
    font-weight: 600;
    line-height: 1.2;
}

.subtitle {
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 25px;
}

.features {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 25px;
    flex-wrap: wrap;
}

.feature-item {
    background: rgba(255, 255, 255, 0.1);
    padding: 15px;
    border-radius: 12px;
    width: calc(33.33% - 14px);
    min-width: 140px;
}

.feature-icon {
    font-size: 24px;
    margin-bottom: 8px;
}

.feature-title {
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 5px;
}

.feature-desc {
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.8);
}

.download-buttons {
    display: flex;
    flex-direction: column;
    gap: 12px;
    align-items: center;
    margin-bottom: 10px;
}

.download-button {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    max-width: 280px;
    padding: 12px 24px;
    border-radius: 20px;
    background: #FF4B4B;
    text-decoration: none;
    color: white;
    font-weight: 500;
    font-size: 0.95rem;
    transition: all 0.3s ease;
    border: none;
    box-shadow: 0 4px 15px rgba(255, 75, 75, 0.3);
}

.download-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 75, 75, 0.4);
}

.download-button img {
    width: 20px;
    height: 20px;
    margin-right: 8px;
}

.company-info {
    margin-top: 25px;
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.6);
    text-align: center;
}

.version-info {
    margin-top: 8px;
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.5);
}

.qr-code {
    width: 120px;
    height: 120px;
    margin: 15px auto;
    background: white url('./qc.png') no-repeat center center;
    padding: 8px;
    border-radius: 8px;
    background-size: cover;  /* 或者使用 contain，取决于图片的比例 */
}


.scan-text {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 15px;
}

@media (max-width: 768px) {
    .container {
        padding: 15px;
    }

    .content {
        padding: 20px 15px;
    }

    .title {
        font-size: 1.4rem;
    }

    .feature-item {
        width: calc(50% - 10px);
    }

    .download-button {
        padding: 10px 20px;
    }
}

@media (max-width: 480px) {
    .feature-item {
        width: 100%;
    }
}