* {
    margin: 0;
}
body {
    font-family: "Microsoft Yahei", sans-serif;
    color:#333;
    background:#fff;
    overflow-x: hidden;
}


/* ========== 五大产业链 旋转木马轮播 ========== */
.industry-chain {
    /* padding:40px 0 60px; */
    background: url("/static/skin/21ths/images/bg/bg_product.png") no-repeat center top;
    width: 100%;
    height: 446px;
}
.section-title {
    text-align: center;
    font-size: 60px;
    font-weight: 600;
    color: #1a2639;
    margin-bottom: 50px;
    letter-spacing: 2px;
}

.carousel-wrap {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.carousel-btn {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    border: none;
    background: white;
    box-shadow: 0 8px 20px rgba(0, 20, 50, 0.12);
    font-size: 26px;
    font-weight: 300;
    color: #1e4f8a;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    z-index: 30;
}

.carousel-btn:hover {
    background: #f0f7ff;
    box-shadow: 0 10px 24px rgba(26, 67, 133, 0.2);
    transform: scale(1.02);
}

.carousel-btn:active {
    transform: scale(0.94);
}

.prev-btn {
    margin-right: 12px;
}

.next-btn {
    margin-left: 12px;
}

.carousel-viewport {
    width: 100%;
    height: 379px;
    perspective: 2000px;
    perspective-origin: 50% 50%;
    position: relative;
    overflow: visible;
    display: flex;
    align-items: center;
    justify-content: center;
}

.carousel-track {
    position: relative;
    width: 100%;
    height: 100%;
    transform-style: preserve-3d;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* ===== 中间卡片 ===== */
.carousel-item.center-card {
    box-shadow: 0 50px 100px rgba(0, 30, 70, 0.5);
    z-index: 999 !important;
    transform: scale(1.15) translateZ(180px) !important;
    filter: brightness(1.12) saturate(1.08);
}

.carousel-item.center-card .label {
    text-shadow: 0 6px 24px rgba(0, 0, 0, 0.9);
    font-size: 32px;
}

/* ===== 左右卡片 ===== */
.carousel-item.side-card {
    z-index: 50 !important;
}

/* ===== 远端卡片 ===== */
.carousel-item.far-card {
    z-index: 20 !important;
    opacity: 0.5 !important;
}

.carousel-item.hidden {
    visibility: hidden !important;
    opacity: 0 !important;
    pointer-events: none !important;
    z-index: 0 !important;
}

/* ===== 响应式 ===== */
@media (max-width: 1100px) {
    .carousel-item {
        width: 320px;
        height: 210px;
        margin-left: -160px;
        margin-top: -105px;
    }
    .carousel-item.center-card {
        transform: scale(1.08) translateZ(150px) !important;
    }
}

@media (max-width: 820px) {
    .carousel-item {
        width: 260px;
        height: 170px;
        margin-left: -130px;
        margin-top: -85px;
    }
    .carousel-viewport {
        height: 360px;
    }
    .carousel-item .label {
        font-size: 18px;
        padding: 20px 0 10px 0;
    }
    .carousel-item.center-card .label {
        font-size: 24px;
    }
    .carousel-item.center-card {
        transform: scale(1.05) translateZ(120px) !important;
    }
    .carousel-btn {
        width: 38px;
        height: 38px;
        font-size: 18px;
    }
    .section-title {
        font-size: 34px;
    }
}

@media (max-width: 580px) {
    .carousel-item {
        width: 180px;
        height: 118px;
        margin-left: -90px;
        margin-top: -59px;
    }
    .carousel-viewport {
        height: 250px;
    }
    .carousel-item .label {
        font-size: 14px;
        padding: 14px 0 6px 0;
        bottom: 10px;
    }
    .carousel-item.center-card .label {
        font-size: 18px;
    }
    .carousel-item.center-card {
        transform: scale(1.14) translateZ(80px) !important;
    }
    .carousel-btn {
        width: 30px;
        height: 30px;
        font-size: 14px;
        padding: 0;
    }
    .section-title {
        font-size: 26px;
        margin-bottom: 30px;
    }
}

/* ========== 产业集群展示 360旋转圆盘 ========== */
.cluster-section {
    padding: 0px 0;
    background:url("/static/skin/21ths/images/bg/bg_enterprise.jpg") no-repeat center;
    margin-top: 65px;
    height: 591px;
}
.cluster-wrap {
    display:flex;
    gap:60px;
    align-items:center;
}
.cluster-left {
    width:40%;
}
.section-subtitle {
    font-size: 36px;
    margin-bottom:16px;
}
.cluster-desc {
    line-height: 2.8;
    color:#555;
    margin-bottom:20px;
}
.more-btn {
    padding: 14px 72px;
    border: 1px solid #0166F4;
    background:#fff;
    color: #0166F4;
    border-radius:4px;
    cursor:pointer;
    font-size: 18px;
}
.cluster-right {
    width:60%;
    display:flex;
    justify-content:center;
}
.rotate-disk {
    width:420px;
    height:420px;
}
/* ===== 旋转木马容器 ===== */
.carousel-wrapper {
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 10px 0;
}

.bigCircle {
    width: 590px;
    height: 590px;
    border-radius: 50%;
    /* border: 2px dashed rgba(36, 136, 237, 0.15); */
    position: relative;
    flex-shrink: 0;
}

.littleCircle {
    width: 50%;
    height: 50%;
    border-radius: 50%;
    /* border: 1px dashed rgba(36, 136, 237, 0.08); */
    position: absolute;
    margin: auto;
    left: 0;
    top: 0;
    bottom: 0;
    right: 0;
    pointer-events: none;
}

/* ===== 旋转动画 ===== */
.item-box {
    width: 100%;
    height: 100%;
    animation: loopRotate 14s linear infinite;
    position: relative;
}

@keyframes loopRotate {
    100% {
        transform: rotate(360deg);
    }
}

/* ===== 每个Logo卡片 ===== */
.item {
    width: 120px;
    height: 86px;
    border-radius: 18px 18px 14px 14px;
    border: 1px solid rgba(0, 0, 0, 0.06);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    box-sizing: border-box;
    flex-shrink: 0;
    position: absolute;
    animation: littleLoopRotate 14s linear infinite;
    background: #ffffff;
    box-shadow: 0 4px 16px rgba(0, 20, 40, 0.08);
    cursor: pointer;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    text-decoration: none;
    padding: 10px 8px;
}

.item:hover {
    transform: scale(1.12) !important;
    box-shadow: 0 12px 40px rgba(0, 30, 70, 0.20);
    z-index: 100;
}

@keyframes littleLoopRotate {
    100% {
        transform: rotate(-360deg);
    }
}

/* ===== 卡片内容 ===== */
.item-icon {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    font-weight: 700;
    color: #fff;
    flex-shrink: 0;
    user-select: none;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.item-name {
    font-size: 11px;
    font-weight: 600;
    color: #1a2639;
    text-align: center;
    line-height: 1.2;
    margin-top: 4px;
    max-width: 100%;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* ===== 提示 ===== */
.carousel-hint {
    text-align: center;
    font-size: 13px;
    color: #8a9aaa;
    margin-top: 20px;
    letter-spacing: 0.3px;
}

.carousel-hint span {
    display: inline-block;
    background: #eef2f8;
    padding: 2px 16px;
    border-radius: 12px;
}

/* ===== 鼠标悬停暂停 ===== */
.bigCircle:hover .item-box {
    animation-play-state: paused;
}

.bigCircle:hover .item {
    animation-play-state: paused;
}

/* ===== 响应式 ===== */
@media (max-width: 1100px) {
    .container {
        padding: 36px 32px 44px;
    }
    .header-section {
        gap: 40px;
        flex-direction: column;
    }
    .header-left h1 {
        font-size: 34px;
    }
    .enterprise-section {
        width: 100%;
    }
    .bigCircle {
        width: 340px;
        height: 340px;
    }
    .item {
        width: 96px;
        height: 78px;
    }
    .item-icon {
        width: 42px;
        height: 42px;
        font-size: 16px;
    }
    .item-name {
        font-size: 10px;
    }
}

@media (max-width: 700px) {
    .container {
        padding: 24px 16px 32px;
        border-radius: 20px;
    }
    .header-left h1 {
        font-size: 28px;
    }
    .header-left .desc {
        font-size: 14px;
    }
    .enterprise-section .section-label h2 {
        font-size: 22px;
    }
    .header-section {
        gap: 24px;
    }
    .bigCircle {
        width: 280px;
        height: 280px;
    }
    .item {
        width: 80px;
        height: 66px;
        border-radius: 12px;
        padding: 6px;
    }
    .item-icon {
        width: 36px;
        height: 36px;
        font-size: 13px;
    }
    .item-name {
        font-size: 9px;
        margin-top: 3px;
    }
}

@media (max-width: 480px) {
    .bigCircle {
        width: 220px;
        height: 220px;
    }
    .item {
        width: 64px;
        height: 54px;
        border-radius: 10px;
        padding: 4px;
    }
    .item-icon {
        width: 28px;
        height: 28px;
        font-size: 11px;
    }
    .item-name {
        font-size: 8px;
        margin-top: 2px;
    }
    .carousel-hint {
        font-size: 11px;
        margin-top: 14px;
    }
}
.disk-center {
    position:absolute;
    width:100px;
    height:100px;
    left:50%;
    top:50%;
    transform:translate(-50%,-50%);
    background:#2488ed;
    color:#fff;
    border-radius:50%;
    display:flex;
    align-items:center;
    justify-content:center;
    font-weight:bold;
}
.disk-tag {
    position:absolute;
    width:80px;
    height:30px;
    background:#fff;
    border:1px solid #2488ed;
    border-radius:4px;
    text-align:center;
    line-height:30px;
    font-size:12px;
    color:#000;
    text-decoration:none;
}
/* 8个标签环形排布 */
.tag1 { top:10px; left:50%; transform:translateX(-50%); }
.tag2 { top:45px; right:20px; }
.tag3 { top:120px; right:5px; }
.tag4 { bottom:120px; right:5px; }
.tag5 { bottom:45px; right:20px; }
.tag6 { bottom:10px; left:50%; transform:translateX(-50%); }
.tag7 { bottom:45px; left:20px; }
.tag8 { top:120px; left:5px; }

/* ==========新闻+视频专区========== */
.news-video-section {
    padding:40px 0;
}
.news-video-wrap {
    display:flex;
    gap:30px;
}
.news-col{
    width:50%;
}
.video-col {
    width:50%;
}
.col-header {
    display:flex;
    justify-content:space-between;
    align-items:center;
    /* margin-bottom:16px; */
    padding-bottom:8px;
    /* border-bottom:2px solid #2488ed; */
}
.col-title {
    font-size: 28px;
    font-weight:bold;
    background: linear-gradient(to right,#00ddde,#022be9);
    color: #fff;
    display: inline-block;
    border-radius: 4%;
    width: 170px;
    height: 45px;
    text-align: center;
    line-height: 45px;
}
.more-link {
    font-size:13px;
    color:#2488ed;
    text-decoration:none;
}
.news-item h4 {
    font-size: 18px;
    margin-bottom: 15px;
}
.news-text {
    font-size: 16px;
    color:#666;
    line-height: 2.6;
    margin-bottom:8px;
}
.news-date {
    font-size: 14px;
    color:#888;
}

/* 视频专区轮播 */
.video-carousel-wrap {
    position:relative;
    display:flex;
    align-items:center;
}
.rslides {
    position: relative;
    list-style: none;
    overflow: hidden;
    width: 100%;
    padding: 0;
    margin: 0;
}

.rslides li {
    -webkit-backface-visibility: hidden;
    position: absolute;
    display: none;
    width: 100%;
    left: 0;
    top: 0;
}

.rslides li:first-child {
    position: relative;
    display: block;
    float: left;
}

.rslides img {
    display: block;
    height: auto;
    float: left;
    width: 100%;
    border: 0;
}

.rslides li { position: relative;}
.rslides p { position: absolute; left: 0; bottom: 0; z-index: 2; width: 100%; margin: 0; padding: 0 10px; height: 32px; line-height: 32px; font-size: 14px; color: #fff; background-color: rgba(0, 0, 0, 0.5); background-color: #666\9;}
.centered-btns_nav { position: absolute; top: 50%; z-index: 2; width: 38px; height: 61px; margin-top: -40px; line-height: 200px; background-image: url(/static/skin/21ths/images/arrow.gif); overflow: hidden; opacity: .7;}
.next { right: 0; background-position: right 0;}
.centered-btns_nav:active { opacity: 1;}