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

body {
    font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

.download-container {
    width: 100%;
    max-width: 500px;
    padding: 20px;
}

.download-card {
    background: white;
    border-radius: 20px;
    padding: 40px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.1);
    text-align: center;
    position: relative;
}

.file-icon {
    font-size: 56px;
    margin-bottom: 20px;
}

.file-name {
    font-size: 28px;
    color: #333;
    margin-bottom: 10px;
}

.file-desc {
    color: #666;
    margin-bottom: 30px;
    font-size: 16px;
}

.platform-buttons {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin-bottom: 30px;
}

.download-btn {
    text-decoration: none;
    background: white;
    color: #333;
    border: 2px solid #eee;
    padding: 15px 25px;
    border-radius: 15px;
    font-size: 16px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 15px;
    width: 100%;
    transition: all 0.3s ease;
}

.download-btn i {
    font-size: 24px;
    width: 30px;
}

.btn-text {
    text-align: left;
    flex: 1;
}

.btn-text small {
    display: block;
    font-size: 12px;
    color: #666;
}

.btn-text span {
    font-size: 16px;
    font-weight: 600;
}

/* 平台特定样式 */
.download-btn.ios:hover {
    background: #000000;
    color: white;
    border-color: #000000;
}

.download-btn.android:hover {
    background: #3DDC84;
    color: white;
    border-color: #3DDC84;
}

.download-btn.windows:hover {
    background: #00A4EF;
    color: white;
    border-color: #00A4EF;
}

.version-info {
    margin-top: 30px;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
    padding-top: 20px;
    border-top: 1px solid #eee;
}

.version {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.version .platform {
    font-weight: 600;
    color: #333;
}

.version .size,
.version .ver {
    font-size: 14px;
    color: #666;
}

/* 响应式设计 */
@media (max-width: 480px) {
    .download-card {
        padding: 25px;
    }
    
    .version-info {
        grid-template-columns: 1fr;
        text-align: left;
    }
    
    .version {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
    }
}

.back-btn {
    position: absolute;
    left: 20px;
    top: 20px;
    background: transparent;
    border: none;
    color: #666;
    display: flex;
    align-items: center;
    gap: 5px;
    cursor: pointer;
    padding: 8px 12px;
    border-radius: 20px;
    transition: all 0.3s ease;
    text-decoration: none;
}

.back-btn:hover {
    background: #f5f5f5;
    color: #333;
}

.back-btn i {
    font-size: 14px;
}

.back-btn span {
    font-size: 14px;
}

@media (max-width: 480px) {
    .back-btn {
        left: 15px;
        top: 15px;
    }
}