/* 下载页面专用样式 */
.download-banner {
    background: linear-gradient(to bottom, #0081f2, #004de2);
    padding: 80px 0;
    text-align: center;
    color: white;
}

.download-banner h1 {
    font-size: 48px;
    font-weight: 600;
    margin-bottom: 20px;
    line-height: 1.2;
}

.download-banner p {
    font-size: 20px;
    opacity: 0.9;
    margin-bottom: 30px;
    line-height: 1.5;
}

.slogan-tags {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 50px;
    flex-wrap: wrap;
}

.slogan-tag {
    background: rgba(255, 255, 255, 0.15);
    color: white;
    padding: 10px 24px;
    border-radius: 25px;
    font-size: 14px;
    font-weight: 500;
    border: 1px solid rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.slogan-tag:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
}

.download-platforms {
    display: flex;
    justify-content: center;
    gap: 40px;
    max-width: 800px;
    margin: 0 auto;
}

.platform-card {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    padding: 40px;
    text-align: center;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: all 0.3s ease;
    flex: 1;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.platform-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.platform-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 36px;
}

.platform-icon img {
    width: 50px;
    height: 50px;
    object-fit: contain;
}

.platform-title {
    font-size: 24px;
    font-weight: bold;
    margin-bottom: 10px;
}

.platform-desc {
    font-size: 14px;
    opacity: 0.8;
    margin-bottom: 20px;
}

.version-info {
    font-size: 12px;
    opacity: 0.7;
    margin-bottom: 30px;
}

.qr-code-container {
    margin-bottom: 20px;
}

.qr-code {
    width: 160px;
    height: 160px;
    background: white;
    border-radius: 16px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.qr-code img {
    width: 140px;
    height: 140px;
}

.qr-hint {
    font-size: 12px;
    opacity: 0.8;
    margin-top: 10px;
}

.download-btn {
    background: linear-gradient(to bottom, #0081f2, #004de2);
    color: white;
    border: none;
    padding: 15px 30px;
    border-radius: 30px;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
    box-shadow: 0 5px 15px rgba(0, 129, 242, 0.3);
}

.download-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
}

.download-btn.disabled {
    background: #ccc;
    cursor: not-allowed;
    box-shadow: none;
}

.download-btn.disabled:hover {
    transform: none;
}

.features-section {
    padding: 80px 0;
    background: #f8f9fa;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    margin-top: 50px;
}

.feature-item {
    text-align: center;
    padding: 40px 30px;
    background: white;
    border-radius: 16px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    border: 1px solid rgba(0, 128, 241, 0.05);
}

.feature-item:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.12);
    border-color: rgba(0, 128, 241, 0.1);
}

.feature-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(to bottom, #0081f2, #004de2);
    border-radius: 18px;
    margin: 0 auto 25px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 28px;
    box-shadow: 0 8px 25px rgba(0, 129, 242, 0.3);
}

.feature-icon img {
    width: 40px;
    height: 40px;
    object-fit: contain;
    filter: brightness(0) invert(1);
}

.feature-title {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 15px;
    color: #333;
}

.feature-desc {
    font-size: 15px;
    color: #666;
    line-height: 1.7;
}

.install-guide-section {
    padding: 80px 0;
    background: white;
}

.install-steps {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 50px;
    margin-top: 50px;
}

.install-step {
    text-align: center;
    position: relative;
    padding: 30px 20px;
    background: #fafbfc;
    border-radius: 16px;
    border: 1px solid rgba(0, 128, 241, 0.08);
    transition: all 0.3s ease;
}

.install-step:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 128, 241, 0.1);
    border-color: rgba(0, 128, 241, 0.15);
}

.step-number {
    width: 70px;
    height: 70px;
    background: linear-gradient(to bottom, #0081f2, #004de2);
    border-radius: 50%;
    margin: 0 auto 25px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 28px;
    font-weight: 600;
    box-shadow: 0 8px 25px rgba(0, 129, 242, 0.3);
}

.step-title {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 15px;
    color: #333;
}

.step-desc {
    font-size: 15px;
    color: #666;
    line-height: 1.7;
}

.install-step:not(:last-child):after {
    content: '→';
    position: absolute;
    top: 50%;
    right: -25px;
    transform: translateY(-50%);
    color: #0081f2;
    font-size: 24px;
    font-weight: 600;
    z-index: 1;
}



/* 平台数据部分样式 */
.sec {
    padding: 80px 0;
}

.sec8 {
    background: #f8f9fa;
}

.sec-content-wrapper {
    margin-top: 50px;
}

.item-list {
    display: flex;
    justify-content: space-around;
    align-items: center;
    list-style: none;
    padding: 0;
    margin: 0;
}

.item-li {
    text-align: center;
    flex: 1;
}

.item-li .number {
    font-size: 56px;
    font-weight: 700;
    color: #0081f2;
    margin-bottom: 15px;
    background: linear-gradient(to bottom, #0081f2, #004de2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
}

.item-li .label {
    font-size: 17px;
    color: #555;
    font-weight: 500;
    line-height: 1.4;
}

/* 平台介绍样式 */
.platform-intro-section {
    background: white;
    padding: 60px 0;
    text-align: center;
    position: relative;
}

.intro-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
    margin: 0 auto;
    padding: 35px 30px;
    background: #f8f9fa;
    border-radius: 16px;
    border: 1px solid rgba(0, 128, 241, 0.1);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.intro-content:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.08);
    border-color: rgba(0, 128, 241, 0.15);
}

.intro-text p {
    font-size: 16px;
    color: #555;
    line-height: 1.8;
    margin: 0;
    font-weight: 400;
    text-align: center;
    letter-spacing: 0.3px;
}