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

html {
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
    color: var(--text);
    background: #fff;
    line-height: 1.6;
}

a {
    color: inherit;
    text-decoration: none;
}

.wrap img {
    max-width: 100%;
    height: 100%;
    display: block;
    object-fit: contain;
    object-position: center;
}

ul {
    list-style: none;
}

.zt_page {
    background-image: url(swwzt.jpg);
    background-repeat: no-repeat;
    background-size: 1920px 100%;
    margin: 0 auto;
    background-position: center 44px;
}

.layout_l {
    width: 1200px;
    /* margin: 0 auto; */
    height: auto;
    overflow: hidden;
}

.hqzc-banner {
    width: 100%;
    height: 356px;
    display: flex;
    justify-content: center;
    /* background: url(hqzc-banner.jpg) no-repeat center; */
}

.hqzc-banner .logo {
    margin-top: 20px;
    height: 65px;
    display: block;
    padding-top: 23px;
    width: 360px;
    background: url("https://www.tj.gov.cn/images/qyfkimgicon_03.png") no-repeat;
}

.top {
    height: 400px;
}

.wrap {
    max-width: 1145px;
    margin: 0px auto 0;
}

/* ============ 规划纲要介绍 ============ */
.intro-sec {
}

.intro-wrap {
    display: flex;
    gap: 80px;
    justify-content: center;
    background-image: url(border.png);
    background-repeat: no-repeat;
    background-size: 100% 100%;
    background-position: center center;
    padding: 40px 0 0;
}

/* 数读卡 */
.num-card {
    width: 258px;
    height: 480px;
    border: 5px solid #ffebcc;
    border-radius: 6px;
}

.num-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* 纲要文字 */
.plan-intro {
    width: 660px;
    border-bottom: 5px solid #ff7c5d;
}

.plan-intro .h3 {
    font-family: MicrosoftYaHei;
    font-size: 30px;
    font-weight: normal;
    font-stretch: normal;
    line-height: 65px;
    color: #fc120a;
    font-weight: 700;
    border-top: 2px solid #ff7c5d;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    height: 70px;
    border-bottom: 2px solid #eee;
    display: block;
    text-align: center;
}

.plan-intro p {
    text-indent: 2em;
    font-weight: normal;
    font-size: 23px;
    font-stretch: normal;
    line-height: 48px;
    letter-spacing: 1.5px;
    color: #3b3b3b;
    margin-top: 18px;
    height: 380px;
    font-family: "Source Han Serif CN";
    border-bottom: 2px solid #ff7c5d;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 8;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* ============ 开局起步发布会 ============ */
.press-sec {
    width: 100%;
    max-width: 1120px;
    background-color: #fff8ee;
    border-radius: 10px;
    margin: 0 auto;
}

.press-title {
    width: 100%;
    height: 48px;
    object-fit: contain;
    margin: 45px 0 30px;
}

.press-card {
    padding: 20px 20px 20px;
    display: flex;
    justify-content: space-between;
    gap: 20px;
}

.press-photo {
    width: 477px;
    height: 321px;
}

.press-info {
    width: 583px;
}

.press-info .h3 {
    display: block;
    font-size: 24px;
    line-height: 33px;
    color: #3b3b3b;
    overflow: hidden;
    /* text-overflow: ellipsis; */
    /* white-space: nowrap; */
    margin-bottom: 20px;
}

.press-info .h3:hover {
    color: #ff4a20;
}

.press-info p {
    font-size: 18px;
    line-height: 40px;
    color: #3b3b3b;
    text-indent: 2em;
    font-family: "Microsoft YaHei";
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 7;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* ============ 系列发布会两栏 ============ */
.news-grid {
    margin-top: 20px;
    padding: 0 20px 30px;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 40px;
    align-items: start;
}

.news-grid .news-col .news-list.pc {
    display: block;
}

.news-grid .news-col .news-list.mb {
    display: none;
}

.news-grid .news-col:nth-child(2) .h3 {
    -webkit-line-clamp: 2;
}

.news-grid .news-col:nth-child(2) .news-list li a {
    white-space: nowrap;
}

.news-grid .news-col:nth-child(2) .feat-info p {
    -webkit-line-clamp: 5;
}

.col-title {
    /* display: block; */
    width: 100%;
    margin-bottom: 20px;
    height: 26px;
    object-fit: contain;
}

.col-title img {
    width: 100%;
    height: 44px;
    object-fit: unset;
}

.news-feat {
    display: flex;
    gap: 15px;
}

.feat-photo {
    width: 234px;
    height: 158px;
}

/* 占位内容上移，避免与底部标签重叠 */
.feat-photo .img-ph {
    padding-bottom: 28px;
}

.feat-info {
    flex: 1;
}

.feat-info .h3 {
    font-size: 16px;
    font-weight: 700;
    line-height: 24px;
    color: #3b3b3b;
    margin-bottom: 8px;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 3;
    overflow: hidden;
    text-overflow: ellipsis;
}

.feat-info .h3:hover {
    color: #ff4a20;
}

.feat-info p {
    font-size: 18px;
    font-stretch: normal;
    line-height: 32px;
    color: #3b3b3b;
    display: -webkit-box;
    text-indent: 2em;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 5;
    overflow: hidden;
    text-overflow: ellipsis;
}

.news-list {
    margin-top: 35px;
    display: flex;
    flex-direction: column;
    /* gap: 20px; */
}

.news-list li {
    position: relative;
    font-size: 20px;
    font-weight: normal;
    font-stretch: normal;
    line-height: 30px;
    letter-spacing: .02rem;
    color: #3b3b3b;
    padding-left: 18px;
    /*! autoprefixer: off */
    /*! autoprefixer: on */
}

.news-list li::before {
    content: "";
    position: absolute;
    left: 4px;
    top: 15px;
    width: 5px;
    height: 5px;
    background-color: #ff4a20;
    border-radius: 50%;
}

.news-list li a {
    display: block;
    color: #3b3b3b;
    transition: color 0.2s;
    text-overflow: ellipsis;
    line-height: 40px;
    font-size: 18px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    /*! autoprefixer: off; */
    -webkit-box-orient: vertical;
    /*! autoprefixer: on */
    overflow: hidden;
    letter-spacing: 0;
}
.news-list.pc li a {
  display: block;
}
.news-list li a:hover {
    color: #ff4a20;
}

/* ============ 规划文件与解读 ============ */
.doc-sec {
    padding: 42px 20px 40px;
}

.doc-grid {
    display: flex;
    justify-content: space-between;
}

.doc-col {
    width: 349px;
}

.doc-col-t {
    width: 728px;
}

.inter-box .doc-list.mb {
    display: none;
}

.inter-box .doc-list.pc {
    display: flex;
}

.doc-list {
    width: 349px;
    height: 417px;
    background-color: #fff7eb;
    border-radius: 15px;
    padding: 30px 20px;
    display: flex;
    flex-direction: column;
    gap: 5px;
    margin-top: 3px;
    justify-content: space-between;
    /* justify-content: space-between; */
}

.spjd-list {
    padding-bottom: 15px;
}

.doc-list li {
    position: relative;
    color: #3b3b3b;
    line-height: 35px;
    font-size: 18px;
    padding-left: 15px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    /*! autoprefixer: off */
    -webkit-box-orient: vertical;
    /*! autoprefixer: on */
    overflow: hidden;
}

.spjd-list li:nth-child(2)::before {
    display: none;
}

.spjd-list li:nth-child(2) a {
    display: -webkit-box;
    -webkit-line-clamp: 2;
    /*! autoprefixer: off */
    -webkit-box-orient: vertical;
    /*! autoprefixer: on */
    overflow: hidden;
    line-height: 30px;
    font-size: 18px;
}

.spjd-list li:nth-child(3) a, .spjd-list li:nth-child(4) a, .spjd-list li:nth-child(5) a {
    white-space: nowrap;
    display: block;
    overflow: hidden;
    text-overflow: ellipsis;
    font-family: Microsoft YaHei;
    font-size: 18px;
    color: #3b3b3b;
    line-height: 30px;
}

.doc-list li::before {
    content: "";
    position: absolute;
    left: 0px;
    top: 12px;
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background-color: #ff4a20;
}

.doc-list li a {
    color: #3b3b3b;
    transition: color 0.2s;
    display: -webkit-box;
    line-height: 30px;
    font-size: 18px;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.doc-list li a:hover {
    color: #ff4a20;
}

.inter-box {
    display: flex;
    gap: 20px;
}

.interp-imgs a {
    display: block;
    width: 100%;
    height: 100%;
    aspect-ratio: 4 / 5;
}

.interp-imgs a img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
}

.interp-imgs {
    width: 349px;
    padding: 30px;
    background-color: #fff7eb;
    border-radius: 15px;
}

.doc-item {
    width: 100%;
    height: 178px;
}

.doc-item img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

/* ============ 响应式：平板 / 小屏桌面 ≤1024px ============ */
@media (max-width: 1024px) {
    .zt_page {
        width: 100%;
        background-size: 150% 100%;
        max-width: 100%;
        background-position: top;
    }

    .wrap {
        padding: 0 30px;
    }

    /* 规划纲要介绍 */
    .intro-wrap {
        gap: 20px;
        padding: 20px;
    }

    .plan-intro {
        width: auto;
        min-width: 0;
        flex: 1;
        padding-bottom: 10px;
        flex: 2;
    }

    /* 开局起步发布会 */
    .press-sec {
        width: 100%;
    }

    .press-photo {
        width: 46%;
        height: auto;
    }

    .press-info {
        width: auto;
        min-width: 0;
        flex: 1;
    }

    /* 系列发布会两栏 */
    .news-grid {
        gap: 24px;
    }

    .feat-photo {
        width: 200px;
        height: auto;
    }

    .feat-info {
        min-width: 0;
    }

    /* 规划文件与解读 */
    .doc-grid {
        gap: 24px;
    }

    .doc-col {
        width: 36%;
        min-width: 0;
    }

    .doc-col-t {
        width: auto;
        min-width: 0;
        flex: 1;
    }

    .doc-list {
        width: 100%;
        height: auto;
    }

    .inter-box {
        gap: 16px;
    }

    .interp-imgs {
        width: auto;
        min-width: 0;
        flex: 1;
    }

    .inter-box .doc-list {
        width: auto;
        min-width: 0;
        flex: 1;
    }

    .plan-intro p {
        height: auto;
        margin-top: 10px;
        line-height: normal;
        border-bottom: none;
    }

    .press-info p {
        display: -webkit-box;
        -webkit-box-orient: vertical;
        -webkit-line-clamp: 5;
        overflow: hidden;
        text-overflow: ellipsis;
    }

    .feat-info .h3, .feat-info p {
        -webkit-line-clamp: 3;
        /* font-family: Microsoft YaHei; */
        font-weight: 300;
        font-size: 0.18rem;
        color: #3b3b3b;
        line-height: 0.23rem;
        font-weight: 800;
    }

    .news-list {
        margin-top: 15px;
    }

    .col-title img {
        width: 100%;
        height: 50px;
        object-fit: cover;
    }

    .doc-item {
        height: auto;
    }

    .doc-list li::before, .news-list li::before {
    }
}

/* ============ 响应式：手机 / 平板竖屏 ≤768px ============ */
@media (max-width: 768px) {
    .doc-list li::before, .news-list li::before {
        top: 10px;
        width: .05rem;
        height: .05rem;
        /* transform: translateY(-50%); */
    }

    .zt_page {
        background-image: url(swwbg_mb.jpg);
        width: 100%;
        background-size: contain;
        max-width: 100%;
        background-position: 0 .45rem;
    }

    .wrap .press-title {
        height: 0.67rem;
        content: url(title1_mb.png);
    }

    .spjd-list li:nth-child(3) a, .spjd-list li:nth-child(4) a, .spjd-list li:nth-child(5) a {
        font-size: .20rem;
        line-height: .28rem;
    }

    .hqzc-banner {
        height: 3.1rem;
    }

    .layout_l {
        width: 100%;
    }

    .plan-intro {
        /* height: 5.53rem; */
    }

    .hqzc-banner .logo {
        background-size: 40%;
        margin-top: 10px;
        background-position: 20px 0;
    }

    .top {
        /* height: 3rem; */
        /* display: none; */
        display: none;
        background: url();
    }

    .wrap {
        padding: 0 16px;
    }

    .intro-wrap {
        padding: .23rem .15rem;
        gap: 0.1rem;
        background: url(border_mb.png);
        background-size: 100% 100%;
        height: 4rem;
    }

    .num-card {
        /* display: none; */
        width: 2.2rem;
        max-width: 90%;
        height: 100%;
        flex: 1;
        /* aspect-ratio: 258 / 480; */
    }

    .num-img {
        width: 100%;
        object-fit: cover;
        object-fit: cover !important;
    }

    .plan-intro {
        /* height: 100%; */
    }

    .plan-intro .h3 {
        font-size: 19px;
        line-height: 1rem;
        height: .5rem;
        /* padding: 12px 0 0; */
        white-space: nowrap;
        display: -webkit-box;
        font-family: Microsoft YaHei;
        font-weight: bold;
        font-size: 0.18rem;
        color: #fc120a;
        line-height: .5rem;
        -webkit-box-orient: vertical;
        -webkit-line-clamp: 2;
        overflow: hidden;
    }

    .plan-intro p {
        margin-top: 8px;
        height: 100%;
        font-family: Source Han Sans CN;
        font-weight: 400;
        font-size: 0.154rem;
        color: #3b3b3b;
        line-height: 0.34rem;
        height: auto;
        display: -webkit-box;
        -webkit-line-clamp: 8;
        -webkit-box-orient: vertical;
        overflow: hidden;
        text-overflow: ellipsis;
        /* 可选：限制最大高度兜底 */
        /* max-height: calc(1.5em * 12); */
        height: calc(100% - .52rem);
        /* line-height: 1.5; */
        border-bottom: 1px solid #ff7c5d;
    }

    /* 开局起步发布会 */
    .press-title {
        margin: 10px 0;
    }

    .press-card {
        flex-direction: column;
        padding: 14px;
        gap: 0.18rem;
        padding-bottom: 0;
    }

    .press-photo {
        width: 100%;
        height: auto;
        aspect-ratio: 477 / 321;
    }

    .press-info {
        width: 100%;
    }

    .press-info .h3 {
        margin: 0 0 0.14rem;
        white-space: normal;
        display: -webkit-box;
        -webkit-box-orient: vertical;
        -webkit-line-clamp: 2;
        overflow: hidden;
        font-family: Microsoft YaHei;
        font-weight: 300;
        font-size: 0.31rem;
        color: #3b3b3b;
        line-height: 0.55rem;
        font-weight: 500;
    }

    .press-info p {
        font-family: Microsoft YaHei;
        font-weight: 300;
        font-size: 0.2237rem;
        color: #3b3b3b;
        line-height: 0.45rem;
        -webkit-line-clamp: 7;
    }

    /* 系列发布会两栏 → 单栏 */
    .news-grid {
        grid-template-columns: 1fr;
        gap: 14px;
        padding: 0 14px 20px;
        margin-top: 0.22rem;
    }

    .news-grid .news-col:nth-child(1) .col-title {
        content: url(title2_mb.png);
        margin-bottom: 0.25rem;
    }

    .news-grid .news-col:nth-child(2) .col-title {
        content: url(title3_mb.png);
        margin-bottom: .25rem;
    }

    .news-feat {
        /* flex-direction: column; */
        gap: .4rem;
    }

    .feat-photo {
        width: 2.9rem;
        height: 1.37rem;
        /* aspect-ratio: 234 / 158; */
    }

    .feat-photo .img-ph {
        padding-bottom: 0.33rem;
    }

    .news-list {
        margin-top: 12px;
        /* gap: 0.2rem; */
    }

    .news-grid .news-col .news-list.pc {
        display: none;
    }

    .news-grid .news-col .news-list.mb {
        display: flex;
    }

    .news-list li {
        font-size: 16px;
        line-height: 31px;
    }

    .news-list li a {
        /* padding: 8px 0; */
        font-family: Microsoft YaHei;
        font-weight: 300;
        font-size: 0.24rem;
        color: #3b3b3b;
        line-height: 0.45rem;
    }

    .news-grid .news-col:nth-child(2) .news-list li a {
        white-space: normal;
    }

    .feat-info p {
        font-size: 14px;
        line-height: 1.7;
        -webkit-line-clamp: 5;
        font-weight: 400;
        letter-spacing: .05rem;
        font-size: 0.22rem;
        color: #3b3b3b;
        line-height: 0.4rem;
    }

    /* 规划文件与解读 */
    .doc-sec {
        padding: 0 0px 40px;
    }

    .doc-grid {
        flex-direction: column;
        gap: 0;
    }

    .doc-grid .doc-col .col-title img {
        content: url(title4_mb.png);
    }

    .doc-col, .doc-col-t {
        width: 100%;
    }

    .doc-list {
        width: 100%;
        height: auto;
        padding: 0.365rem 16px;
        gap: 0.2rem;
        margin-top: 0;
    }

    .doc-list li {
        font-size: 16px;
        line-height: 28px;
        padding-left: .15rem;
    }

    .doc-list li a {
        padding: 0;
        font-family: Microsoft YaHei;
        font-weight: 300;
        font-size: 0.24rem;
        color: #3b3b3b;
        -webkit-line-clamp: 1;
        line-height: 0.4rem;
        white-space: nowrap;
        letter-spacing: .02rem;
        text-overflow: ellipsis;
    }

    .spjd-list li a {
        letter-spacing: 0
    }
    .spjd-list.mb li:nth-child(2) a{
        -webkit-line-clamp: 3;
    }
    .spjd-list li:nth-child(2) {
        padding-left: 4px;
        line-height: .4rem;
        margin-top: 0rem;
        margin-bottom: .06rem;
    }

    .spjd-list li:nth-child(2) a {
        white-space: normal;
        padding: 0;
        line-height: 0.28rem;
        font-size: .2rem;
    }

    .spjd-list li:nth-child(3) {
        /* margin-bottom: .16rem; */
    }

    .inter-box {
        /* flex-direction: column; */
        gap: 16px;
    }

    .interp-imgs {
        width: 100%;
        padding: 20px;
        height: 4.2rem;
        margin: 0;
    }

    .inter-box .doc-list.pc {
        display: none;
    }

    .inter-box .doc-list.mb {
        display: flex;
    }

    .inter-box .doc-list {
        width: 100%;
        height: 4.2rem;
        gap: 0;
        /* padding-top: .46rem; */
        padding-bottom: .26rem;
        justify-content: space-between;
        /* margin-top: 20px; */
    }

    .spjd-list li::before {
        top: 50%;
        transform: translateY(-50%);
    }

    .doc-item {
        height: auto;
    }

    .doc-item img {
        height: auto;
    }

    .col-title img {
        width: 100%;
        height: 50px;
        object-fit: contain;
    }

    .doc-col-t .col-title img {
        content: url(title5_MB.png);
    }
}

/* ============ .useOldFixed：旧版响应式（始终生效，不依赖断点） ============ */
.useOldFixed .doc-list li::before, .useOldFixed .news-list li::before {
    top: 50%;
    transform: translateY(-50%);
}

.useOldFixed .zt_page {
    background-image: url(swwbg_mb.jpg);
    width: 100%;
    background-size: contain;
    max-width: 100%;
    background-position: 0 25px;
}

.useOldFixed .wrap .press-title {
    height: 0.67rem;
    content: url(title1_mb.png);
}

.useOldFixed .hqzc-banner {
    height: 200px;
}

.useOldFixed .layout_l {
    width: 100%;
}

.useOldFixed .plan-intro {
    height: 5.53rem;
}

.useOldFixed .hqzc-banner .logo {
    background-size: 40%;
    margin-top: 10px;
    background-position: 20px 0;
}

.useOldFixed .top {
    display: none;
    background: url();
}

.useOldFixed .wrap {
    padding: 0 16px;
}

.useOldFixed .intro-wrap {
    align-items: center;
    gap: 0.29rem;
    padding: 0.4rem;
}

.useOldFixed .num-img {
  object-fit: fill;
}

.useOldFixed .num-card {
    width: 3.11rem;
    max-width: 90%;
    height: 5.53rem;
}

.useOldFixed .plan-intro {
    width: 60%;
}

.useOldFixed .plan-intro .h3 {
    font-size: 0.27rem;
    line-height: 1rem;
    height: 1rem;
    white-space: nowrap;
    
    font-family: Microsoft YaHei;
    font-weight: bold;
    color: #fc120a;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
    overflow: hidden;
}

.useOldFixed .plan-intro p {
    margin-top: 14px;
    height: auto;
    font-family: "Source Han Sans CN";
    font-weight: 400;
    font-size: 0.23rem;
    color: #4b4b4b;
    line-height: 0.53rem;
    display: -webkit-box;
    -webkit-line-clamp: 12;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
    max-height: calc(1.5em * 12);
}
.useOldFixed .interp-imgs a img {
  object-fit: fill;
}

.useOldFixed .press-title {
    margin: 10px 0;
    width: 99%;
}
.useOldFixed .news-col > a{
    width: 100%;
    padding: 0.3rem 0;
}
.useOldFixed .press-card {
    flex-direction: column;
    padding: 14px;
    gap: 0.44rem;
    padding-bottom: 0;
}

.useOldFixed .press-photo {
    width: 100%;
    height: auto;
    aspect-ratio: 477 / 321;
}

.useOldFixed .press-info {
    width: 100%;
}

.useOldFixed .press-info .h3 {
    margin: 4px 0 0.47rem;
    white-space: normal;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 1;
    overflow: hidden;
    font-family: Microsoft YaHei;
    font-weight: 400;
    font-size: 0.5rem;
    color: #3b3b3b;
    line-height: 0.55rem;
}

.useOldFixed .press-info p {
    font-family: Microsoft YaHei;
    font-weight: 300;
    font-size: 0.3rem;
    color: #3b3b3b;
    line-height: 0.5rem;
}

.useOldFixed .news-grid {
    grid-template-columns: 1fr;
    gap: 28px;
    padding: 0 14px 24px;
    margin-top: 0.44rem;
    display: block;
}

.useOldFixed .news-grid .news-col:nth-child(1) .col-title {
    content: url(title2_mb.png);
    /* margin-bottom: 0.49rem; */
}

.useOldFixed .news-grid .news-col:nth-child(2) .col-title {
    content: url(title3_mb.png);
}

.useOldFixed .news-feat {
    /* flex-direction: column; */    
}

.useOldFixed .feat-photo {
    width: 4.06rem;
    height: 2.74rem;
}

.useOldFixed .feat-photo .img-ph {
    padding-bottom: 0.66rem;
}

.useOldFixed .news-list {
    margin-top: 24px;
    gap: 0.13rem;    
}

.useOldFixed .news-list li {
    font-size: 16px;
    line-height: 31px;
}

.useOldFixed .news-list li a {
    font-family: Microsoft YaHei;
    font-weight: 300;
    font-size: 0.3rem;
    color: #3b3b3b;
    line-height: 0.52rem;
    display: block;
    overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  width: 100%;
}

.useOldFixed .feat-info p {
    -webkit-line-clamp: 5;
    font-family: Microsoft YaHei;
    font-weight: 300;
    font-size: 0.3rem;
    color: #484848;
    line-height: 0.49rem;
}

.useOldFixed .doc-sec {
    padding: 0.56rem 0 40px;
}

.useOldFixed .doc-grid {
    flex-direction: column;
    gap: 30px;
}

.useOldFixed .doc-grid .doc-col .col-title img {
    content: url(title4_mb.png);
}

.useOldFixed .doc-col, .useOldFixed .doc-col-t {
    width: 100%;
}

.useOldFixed .doc-list {
    width: 100%;
    height: auto;
    padding: 0.23rem 16px;
    gap: 0.13rem;
}

.useOldFixed .doc-list li {
    font-size: 16px;
    line-height: 28px;
}

.useOldFixed .doc-list li a {
    padding: 0;
    font-family: Microsoft YaHei;
    font-weight: 300;
    font-size: 0.3rem;
    color: #3b3b3b;
    -webkit-line-clamp: 3;
    line-height: 0.53rem;
    white-space: nowrap;
    text-overflow: ellipsis;
}

.useOldFixed .spjd-list li:nth-child(2) {
    padding-left: 4px;
}

.useOldFixed .spjd-list li:nth-child(2) a {
    white-space: normal;
    padding: 0;
}

.useOldFixed .inter-box {
    gap: 0;
}

.useOldFixed .interp-imgs {
    width: 50%;
    padding: 20px;
}

.useOldFixed .inter-box .doc-list {
    width: 50%;
}

.useOldFixed .spjd-list li::before {
    top: 50%;
    transform: translateY(-50%);
}

.useOldFixed .doc-item {
    height: auto;
}

.useOldFixed .doc-item img {
    height: auto;
}

.useOldFixed .col-title img {
    width: 100%;
    height: 50px;
    object-fit: contain;
}

.useOldFixed .doc-col-t .col-title img {
    content: url(title5_MB.png);
}

@media (max-width: 520px) {
    .col-title img {
        object-fit: contain;
    }
}