/* 重置样式 - 兼容IE */
* {
    margin: 0;
    padding: 0;
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    box-sizing: border-box;
}

body {
    font-family: "Microsoft YaHei", "微软雅黑", Arial, sans-serif;
    font-size: 14px;
    line-height: 1.6;
    color: #333;
    background-color: #f5f5f5;
}

.container {
    width: 1400px;
    margin: 0 auto;
    position: relative;
}

/* 清除浮动 - IE兼容 */
.clearfix:after {
    content: "";
    display: table;
    clear: both;
}

/* 顶部导航 */
.header {
    background: #fff;
    padding: 10px 0;
    /* border-bottom: 1px solid #e0e0e0; */
    position: relative;
    z-index: 100;
}

.header-content {
    overflow: hidden;
}

.logo-section {
    float: left;
    overflow: hidden;
}

.logo-icon {
    float: left;
    height: 40px;
    width: auto;
    margin-right: 10px;
    vertical-align: middle;
}

.logo-title {
    float: left;
    height: 40px;
    width: auto;
    vertical-align: middle;
}

.download-btn-top {
    float: right;
    display: block;
    color: #fff;
    text-decoration: none;
    font-size: 16px;
    transition: background 0.3s;
    width: 100px;
    height: 36px;
    background: linear-gradient( 90deg, #8066FF 0%, #4178FE 100%);
    border-radius: 8px 8px 8px 8px;
    text-align: center;
    line-height: 36px;
}

.download-btn-top:hover {
    opacity: 0.9;
    filter: alpha(opacity=90);
}

/* 主功能区 */
.hero-section {
    background-image: url('assets/background.png');
    background-position: top center;
    background-repeat: no-repeat;
    background-size: cover;
    /* IE fallback */
    background-color: #E8F4FD;
    padding: 60px 0;
    overflow: hidden;
}

.hero-content {
    overflow: hidden;
}

.hero-left {
    float: left;
    /* width: 50%; */
    width: 791px;
    position: relative;
}

.screenshot-wrapper {
    position: relative;
    width: 100%;
    /* max-width: 600px; */
}

.screenshot-img {
    width: 100%;
    height: auto;
    display: block;
    position: relative;
    z-index: 2;
}

.hero-right {
    float: left;
    /* width: 50%; */
    padding-left: 120px;
    margin-top: 20px;
}

.main-title {
    font-family: Source Han Sans CN, Source Han Sans CN;
    font-weight: bold;
    font-size: 48px;
    color: #333333;
    letter-spacing: 1px;
    text-align: left;
    font-style: normal;
    text-transform: none;
    margin-bottom: 10px;
}

.tagline {
    font-family: Source Han Sans CN, Source Han Sans CN;
    font-size: 28px;
    color: #666666;
    letter-spacing: 1px;
    text-align: left;
    font-style: normal;
    text-transform: none;
    margin-bottom: 28px;
}

.feature-list {
    margin-bottom: 60px;
    padding: 0;
    overflow: hidden;
}

.li-left {
    float: left;
    width: 50%;
    padding-right: 25px;
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    box-sizing: border-box;
}

.li-right {
    float: left;
    width: 50%;
    padding-left: 25px;
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    box-sizing: border-box;
}

.feature-item {
    margin-bottom: 20px;
    overflow: hidden;
    line-height: 24px;
    min-height: 24px;
}

.tick-icon {
    float: left;
    width: 24px;
    height: 24px;
    margin-right: 12px;
    display: block;
}

.feature-item span {
    display: block;
    font-family: Source Han Sans CN, "Microsoft YaHei", "微软雅黑", Arial, sans-serif;
    font-size: 18px;
    color: #333333;
    line-height: 24px;
    overflow: hidden;
    margin-left: 36px;
}

.download-btn-primary {
    display: inline-block;
    width: 220px;
    height: 60px;
    text-align: center;
    line-height: 60px;
    background: linear-gradient( 90deg, #8066FF 0%, #4178FE 100%);
    background: -webkit-linear-gradient(90deg, #8066FF 0%, #4178FE 100%);
    background: -moz-linear-gradient(90deg, #8066FF 0%, #4178FE 100%);
    background: -o-linear-gradient(90deg, #8066FF 0%, #4178FE 100%);
    color: #fff;
    text-decoration: none;
    border-radius: 12px;
    font-size: 24px;
    font-weight: bold;
    text-align: center;
    border: none;
    cursor: pointer;
    -webkit-box-shadow: 0 8px 20px rgba(129, 102, 255, 0.4), 0 4px 10px rgba(65, 120, 254, 0.3);
    -moz-box-shadow: 0 8px 20px rgba(129, 102, 255, 0.4), 0 4px 10px rgba(65, 120, 254, 0.3);
    box-shadow: 0 8px 20px rgba(129, 102, 255, 0.4), 0 4px 10px rgba(65, 120, 254, 0.3);
    -webkit-transition: all 0.3s ease;
    -moz-transition: all 0.3s ease;
    -o-transition: all 0.3s ease;
    transition: all 0.3s ease;
}

.download-btn-primary:hover {
    opacity: 0.95;
    filter: alpha(opacity=95);
    -webkit-box-shadow: 0 10px 25px rgba(129, 102, 255, 0.5), 0 6px 15px rgba(65, 120, 254, 0.4);
    -moz-box-shadow: 0 10px 25px rgba(129, 102, 255, 0.5), 0 6px 15px rgba(65, 120, 254, 0.4);
    box-shadow: 0 10px 25px rgba(129, 102, 255, 0.5), 0 6px 15px rgba(65, 120, 254, 0.4);
    -webkit-transform: translateY(-2px);
    -moz-transform: translateY(-2px);
    -o-transform: translateY(-2px);
    transform: translateY(-2px);
}

/* 智能修复方案区域 */
.repair-section {
    background-color: #fff;
    /* background: linear-gradient(to bottom, #FFFFFF 0%, #E8F4FD 100%);
    background: -webkit-linear-gradient(top, #FFFFFF 0%, #E8F4FD 100%);
    background: -moz-linear-gradient(top, #FFFFFF 0%, #E8F4FD 100%);
    background: -o-linear-gradient(top, #FFFFFF 0%, #E8F4FD 100%);
    filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#FFFFFF', endColorstr='#E8F4FD', GradientType=0); */
    padding: 60px 0;
    overflow: hidden;
}

.section-title {
    font-family: Source Han Sans CN, Source Han Sans CN;
    font-weight: bold;
    font-size: 40px;
    color: #333333;
    letter-spacing: 1px;
    text-align: center;
    font-style: normal;
    text-transform: none;
    margin-bottom: 50px;
}

.feature-icons {
    overflow: hidden;
    margin-bottom: 0;
    text-align: center;
    position: relative;
    /* padding-bottom: 20px; */
    border-bottom: 1px solid #E0E0E0;
}

.icon-item {
    float: left;
    width: 14.28%;
    padding: 0 10px;
    margin-bottom: 20px;
    cursor: pointer;
    position: relative;
    -webkit-transition: all 0.3s ease;
    -moz-transition: all 0.3s ease;
    -o-transition: all 0.3s ease;
    transition: all 0.3s ease;
}

.icon-item:hover {
    opacity: 0.8;
}

.icon-item.active .icon-text {
    color: #4F6BFE;
    font-weight: bold;
}

.icon-item.active:after {
    content: '';
    position: absolute;
    bottom: -20px;
    left: 50%;
    -webkit-transform: translateX(-50%);
    -moz-transform: translateX(-50%);
    -o-transform: translateX(-50%);
    transform: translateX(-50%);
    width: 120px;
    height: 3px;
    background: #4F6BFE;
    z-index: 10;
}

.icon-img {
    width: 40px;
    height: 40px;
    margin: 0 auto 16px;
    display: block;
    -webkit-transition: all 0.3s ease;
    -moz-transition: all 0.3s ease;
    -o-transition: all 0.3s ease;
    transition: all 0.3s ease;
}

.icon-item.active .icon-img {
    -webkit-transform: scale(1.1);
    -moz-transform: scale(1.1);
    -o-transform: scale(1.1);
    transform: scale(1.1);
}

.icon-text {
    font-family: Source Han Sans CN, Source Han Sans CN;
    font-weight: 400;
    font-size: 16px;
    color: #666666;
    line-height: 20px;
    text-align: center;
    font-style: normal;
    text-transform: none;
    -webkit-transition: all 0.3s ease;
    -moz-transition: all 0.3s ease;
    -o-transition: all 0.3s ease;
    transition: all 0.3s ease;
}

.deep-scan-section {
    overflow: hidden;
    margin-top: 60px;
    position: relative;
    min-height: 400px;
}

.deep-scan-content {
    display: none;
    overflow: hidden;
    opacity: 0;
    -webkit-transition: opacity 0.5s ease-in-out;
    -moz-transition: opacity 0.5s ease-in-out;
    -o-transition: opacity 0.5s ease-in-out;
    transition: opacity 0.5s ease-in-out;
}

.deep-scan-content.active {
    display: block;
    opacity: 1;
    -webkit-animation: fadeInUp 0.5s ease-in-out;
    -moz-animation: fadeInUp 0.5s ease-in-out;
    -o-animation: fadeInUp 0.5s ease-in-out;
    animation: fadeInUp 0.5s ease-in-out;
}

@-webkit-keyframes fadeInUp {
    from {
        opacity: 0;
        -webkit-transform: translateY(20px);
    }
    to {
        opacity: 1;
        -webkit-transform: translateY(0);
    }
}

@-moz-keyframes fadeInUp {
    from {
        opacity: 0;
        -moz-transform: translateY(20px);
    }
    to {
        opacity: 1;
        -moz-transform: translateY(0);
    }
}

@-o-keyframes fadeInUp {
    from {
        opacity: 0;
        -o-transform: translateY(20px);
    }
    to {
        opacity: 1;
        -o-transform: translateY(0);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.deep-scan-left {
    float: left;
    width: 50%;
    padding-left: 50px;
    padding-right: 40px;
    margin-top: 45px;
}

.deep-scan-title {
    font-family: Source Han Sans CN, Source Han Sans CN;
    font-weight: bold;
    font-size: 32px;
    color: #333333;
    letter-spacing: 1px;
    text-align: left;
    font-style: normal;
    text-transform: none;
}

.deep-scan-subtitle {
    font-family: Source Han Sans CN, Source Han Sans CN;
    font-weight: bold;
    font-size: 32px;
    color: #333333;
    letter-spacing: 1px;
    text-align: left;
    font-style: normal;
    text-transform: none;
    margin-bottom: 20px;
}

.deep-scan-desc {
    font-family: Source Han Sans CN, Source Han Sans CN;
    font-weight: 400;
    font-size: 18px;
    color: #666666;
    letter-spacing: 1px;
    text-align: left;
    font-style: normal;
    text-transform: none;
    margin-bottom: 50px;
}

.deep-scan-right {
    float: right;
    width: 600px;
    margin-right: 50px;
}

/* 专业驱动安装区域 */
.professional-section {
    background: linear-gradient(to bottom, #DEE9FF 0%, #FFFFFF 100%);
    background: -webkit-linear-gradient(top, #DEE9FF 0%, #FFFFFF 100%);
    background: -moz-linear-gradient(top, #DEE9FF 0%, #FFFFFF 100%);
    background: -o-linear-gradient(top, #DEE9FF 0%, #FFFFFF 100%);
    filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#DEE9FF', endColorstr='#FFFFFF', GradientType=0);
    padding: 70px 0 0 0;
    overflow: hidden;
}

.professional-content {
    width: 100%;
    height: 88px;
    background: #EAF2FF;
}

.professional-title {
    font-family: Source Han Sans CN, Source Han Sans CN;
    font-weight: bold;
    font-size: 40px;
    color: #333333;
    letter-spacing: 1px;
    text-align: left;
    font-style: normal;
    text-transform: none;
    margin-bottom: 30px;
}

.professional-title span {
    color: #4F6BFE;
    display: inline;
}

.stats-section {
    overflow: hidden;
}

.stats-left {
    float: left;
    width: 50%;
    padding-right: 40px;
}

.stat-item {
    overflow: hidden;
    margin-bottom: 40px;
}

.stat-icon {
    float: left;
    width: 36px;
    height: 36px;
    margin-right: 20px;
}

.stat-content {
    overflow: hidden;
}

.stat-label {
    font-family: Source Han Sans CN, Source Han Sans CN;
    font-weight: 400;
    font-size: 24px;
    color: #666666;
    line-height: 37px;
    letter-spacing: 1px;
    text-align: left;
    font-style: normal;
    text-transform: none;
    margin-bottom: 20px;
}

.stat-number {
    list-style: none;
    padding: 0;
    margin: 0;
    font-family: Source Han Sans CN, Source Han Sans CN;
    font-weight: bold;
    font-size: 52px;
    color: #4F6BFE;
    line-height: 52px;
    letter-spacing: 1px;
    text-align: left;
    font-style: normal;
    text-transform: none;
    overflow: hidden;
}

.stat-number .group {
    float: left;
    position: relative;
    width: auto;
    min-width: 0.6em;
    height: 52px;
    overflow: hidden;
}

.stat-number .group span {
    display: block;
    width: 100%;
    height: 52px;
    line-height: 52px;
    text-align: center;
}

.stat-number .group .old {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
}

.stat-number .group .new {
    position: absolute;
    top: 52px;
    left: 0;
    width: 100%;
}

.stat-number .group.active .old {
    -webkit-animation: numberRollUp 0.5s ease-in-out forwards;
    -moz-animation: numberRollUp 0.5s ease-in-out forwards;
    -o-animation: numberRollUp 0.5s ease-in-out forwards;
    animation: numberRollUp 0.5s ease-in-out forwards;
}

.stat-number .group.active .new {
    -webkit-animation: numberRollDown 0.5s ease-in-out forwards;
    -moz-animation: numberRollDown 0.5s ease-in-out forwards;
    -o-animation: numberRollDown 0.5s ease-in-out forwards;
    animation: numberRollDown 0.5s ease-in-out forwards;
}

@-webkit-keyframes numberRollUp {
    from {
        top: 0;
    }
    to {
        top: -52px;
    }
}

@-moz-keyframes numberRollUp {
    from {
        top: 0;
    }
    to {
        top: -52px;
    }
}

@-o-keyframes numberRollUp {
    from {
        top: 0;
    }
    to {
        top: -52px;
    }
}

@keyframes numberRollUp {
    from {
        top: 0;
    }
    to {
        top: -52px;
    }
}

@-webkit-keyframes numberRollDown {
    from {
        top: 52px;
    }
    to {
        top: 0;
    }
}

@-moz-keyframes numberRollDown {
    from {
        top: 52px;
    }
    to {
        top: 0;
    }
}

@-o-keyframes numberRollDown {
    from {
        top: 52px;
    }
    to {
        top: 0;
    }
}

@keyframes numberRollDown {
    from {
        top: 52px;
    }
    to {
        top: 0;
    }
}

.stats-right {
    /* float: right; */
    position: absolute;
    right: 0;
    bottom: -80px;
    width: 500px;
    text-align: center;
}

.illustration-img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* 页脚 */
.footer {
    background: #2C3E50;
    color: #fff;
    padding: 30px 0;
    text-align: center;
}

.footer-text {
    font-size: 14px;
    color: #ccc;
}

/* 响应式设计 - 兼容IE */
@media screen and (max-width: 1400px) {
    .container {
        width: 100%;
        padding: 0 20px;
    }
}

@media screen and (max-width: 768px) {
    .hero-left,
    .hero-right,
    .deep-scan-left,
    .deep-scan-right,
    .stats-left,
    .stats-right {
        float: none;
        width: 100%;
        padding: 0;
        margin-bottom: 30px;
    }
    
    .icon-item {
        width: 33.33%;
    }
    
    .main-title {
        font-size: 28px;
    }
    
    .section-title {
        font-size: 24px;
    }
}

/* IE特定样式 - 通过HTML条件注释引入 */