.inner-banner-section .banner-box {
    text-align: center;
}

.main-section {
    padding: 90px 0 80px;
    background-color: RGBA(250, 250, 250, 1);
}

.welcome-block {
    text-align: center;
    /* margin-bottom: 60px; */
}

.welcome-block h2 {
    color: #333;
    font-weight: bold;
}

.welcome-block h3 {
    color: rgba(34, 34, 34, 1);
    font-weight: 300;
    font-family: "微软雅黑";
}

.welcome-block p {
    font-weight: 400;
    font-size: 16px;
    color: #666666;
    line-height: 30px;
    width: 1200px;
    margin: 65px auto 0;
    max-width: 100%;
}

.device-img {
    margin-top: 41px;
}

.device-img .pic {
    border-radius: 10px;
}

/* ================= 通用板块标题 (带水印) ================= */
.section-header {
    position: relative;
    margin-bottom: 40px;
    /* padding-top: 30px; */
    margin-top: 60px;
}

.section-watermark {
    position: absolute;
    top: 0;
    left: 0;
    font-size: 50px;
    font-weight: 900;
    color: transparent;
    -webkit-text-stroke: 1px #f0f2f5;
    text-transform: uppercase;
    letter-spacing: 4px;
    z-index: 1;
    white-space: nowrap;
    font-family: 'Arial Black', Impact, sans-serif;
    font-style: italic;
}

/* ================= 文本排版样式 ================= */
.content-block {
    margin-bottom: 40px;
}

.content-block h4 {
    font-size: 24px;
    font-weight: bold;
    color: #333;
    margin-bottom: 20px;
}

.content-block p,
.content-block li {
    font-size: 16px;
    line-height: 2;
    margin-bottom: 5px;
}

/* 蓝色提示字 */
.text-blue {
    color: var(--primary-blue);
}

.def-list {font-weight: 400;font-size: 16px;color: #666666;line-height: 30px;padding-bottom: 35px;border-bottom: 1px solid rgba(222, 222, 222, 1);}

.def-item {
    display: flex;
    margin-bottom: 15px;
}
.def-list img{
    display: block;
    max-width: 100%;
}
.def-term {
    font-weight: bold;
    color: #333;
    width: 80px;
    flex-shrink: 0;
}

.def-desc {
    flex: 1;
    color: var(--text-sub);
    line-height: 2;
}

/* 列表前的圆点 */
.bullet-list li {
    position: relative;
    padding-left: 15px;
}

.bullet-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 12px;
    width: 4px;
    height: 4px;
    background-color: #999;
    border-radius: 50%;
}

.spec-table {
    width: 100%;
    border-collapse: collapse;
    margin: 30px 0;
    font-size: 14px;
}

.spec-table th,
.spec-table td {
    border: 1px solid var(--border-color);
    padding: 15px;
    text-align: center;
    vertical-align: middle;
}

.spec-table th {
    background-color: #f9f9f9;
    color: #333;
    font-weight: bold;
}

.spec-table td {
    color: var(--text-sub);
}
.content-block:last-child{
    margin-bottom: 0;
}
.content-block:last-child .def-list{
    padding-bottom: 0;
    border-bottom: none;
}
@media (max-width:1199px) {
     .main-section{
        padding: 75px 0;
    }
    .section-header,
    .welcome-block p{
        margin-top: 45px;
    }
    .section-header{
        margin-bottom: 35px;
    }
}
@media (max-width:1024px) {
    .device-img{
        margin-top: 40px;
    }
    .content-block h4{
        font-size: 22px;
    }
     .main-section{
        padding: 65px 0;
    }
    .section-header,
    .welcome-block p{
        margin-top: 40px;
    }
    .section-header{
        margin-bottom: 30px;
    }
}
@media (max-width: 768px) {
    .device-img{
        margin-top: 30px;
    }
    .content-block h4{
        font-size: 20px;
    }
    .section-header{
        margin-bottom: 25px;
    }
     .main-section{
        padding: 55px 0;
    }
    .section-header,
    .welcome-block p{
        margin-top: 30px;
    }
}
@media (max-width: 500px) {
    .device-img{
        margin-top: 25px;
    }
    .welcome-block h3{
        font-size: 20px;
    }
    .welcome-block p{
        font-size: 14px;
        line-height: 24px;
    }
    .content-block h4{
        margin-bottom: 10px;
    }
    .content-block p, .content-block li{
        font-size: 14px;
        line-height: 24px;
    }
    .content-block h4{
        font-size: 18px;
    }
    .section-header{
        margin-bottom: 20px;
    }
     .main-section{
        padding: 45px 0;
    }
    .section-header,
    .welcome-block p{
        margin-top: 25px;
    }
}