body {
    font-family: "Microsoft YaHei", "PingFang SC", sans-serif;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.container {
    max-width: 1400px;
}

.main-ct {
    flex: 1;
}

.top-bar {
    background: #1a1a1a;
    padding: 8px 0;
    font-size: 13px;
    color: rgba(255,255,255,0.8);
    letter-spacing: 0.5px;
}

.dh-nav {
    border-bottom: 2px solid #C8102E;
    padding: 0;
    min-height: 90px;
}

.dh-logo-img {
    height: 55px;
    width: auto;
    mix-blend-mode: multiply;
}

.dh-logo-txt {
    font-size: 20px;
    font-weight: bold;
    color: #C8102E;
    margin-left: 12px;
    letter-spacing: 2px;
}

.dh-nav .nav-link {
    font-size: 17px;
    color: #222;
    padding: 12px 22px;
    font-weight: 500;
    position: relative;
}

.dh-nav .nav-link::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: #C8102E;
    transition: width 0.3s ease;
}

.dh-nav .nav-link:hover::after,
.dh-nav .nav-link.active::after {
    width: 70%;
}

.dh-nav .nav-link:hover,
.dh-nav .nav-link.active {
    color: #C8102E;
}

.dh-tel {
    font-size: 14px;
    color: #555;
}

.dh-tel strong {
    color: #C8102E;
    font-size: 18px;
}

.banner-img {
    height: 650px;
    object-fit: cover;
}

.carousel-item::after {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom, rgba(0,0,0,0.1) 0%, rgba(0,0,0,0.45) 100%);
    pointer-events: none;
}

#zzCarousel .carousel-item,
#fcCarousel .carousel-item {
    transition: transform 1.2s ease-in-out;
}

.carousel-caption {
    z-index: 2;
    bottom: 35%;
}

.carousel-caption h2 {
    font-size: 42px;
    font-weight: bold;
    letter-spacing: 5px;
    text-shadow: 0 2px 10px rgba(0,0,0,0.4);
    margin-bottom: 12px;
    animation: fadeInUp 0.8s ease;
}

.carousel-caption p {
    font-size: 18px;
    letter-spacing: 3px;
    opacity: 0.9;
    text-shadow: 0 1px 4px rgba(0,0,0,0.3);
    animation: fadeInUp 1s ease 0.15s both;
}

.mk-title {
    font-size: 30px;
    letter-spacing: 2px;
    color: #111;
}

.mk-title::after {
    content: "";
    display: block;
    width: 40px;
    height: 2px;
    background: #ddd;
    margin: 8px auto 0;
}

.title-line {
    width: 60px;
    height: 3px;
    background: #C8102E;
    margin: 12px auto 0;
}

.ls-2 {
    letter-spacing: 3px;
}

.img-box {
    height: 300px;
    overflow: hidden;
    border: 1px solid #eee;
}

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

.img-box-lg {
    height: 380px;
}

.img-box-md {
    height: 200px;
    overflow: hidden;
    border: 1px solid #eee;
}

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

.img-box-sm {
    height: 300px;
    overflow: hidden;
    border: 1px solid #eee;
}

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

.sj-section {
    background: #C8102E;
}

.sj-item {
    text-align: center;
    padding: 50px 15px;
    background: #C8102E;
    color: #fff;
    position: relative;
}

.sj-item::after {
    content: "";
    position: absolute;
    right: 0;
    top: 25%;
    height: 50%;
    width: 1px;
    background: rgba(255,255,255,0.2);
}

.sj-item:last-child::after {
    display: none;
}

.sj-item.sj-dark {
    background: #a50d24;
}

.sj-item strong {
    font-size: 36px;
    display: block;
    font-weight: bold;
    margin-bottom: 5px;
    transition: transform 0.3s ease;
}

.sj-item span {
    font-size: 13px;
    opacity: 0.9;
}

.yw-card {
    border: 1px solid #e5e5e5;
    border-radius: 0;
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.yw-card:hover {
    border-color: #C8102E;
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.1);
}

.yw-card-img {
    height: 220px;
    overflow: hidden;
}

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

.js-card {
    border: 1px solid #e5e5e5;
    border-radius: 0;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.js-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 6px 20px rgba(0,0,0,0.08);
}

.js-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 15px;
    background: #fff;
    border: 2px solid #C8102E;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #C8102E;
    font-size: 22px;
    font-weight: bold;
    transition: background 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

.js-card:hover .js-icon {
    background: #C8102E;
    color: #fff;
    border-color: #C8102E;
}

.js-card:hover .js-icon-img {
    filter: brightness(0) invert(1);
}

.wh-card {
    border: 1px solid #e5e5e5;
    border-radius: 0;
    padding: 20px 10px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.wh-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 4px 15px rgba(0,0,0,0.06);
}

.wh-card .card-title {
    transition: color 0.3s ease;
}

.wh-card:hover .card-title {
    color: #C8102E !important;
}

.footer-bg {
    background: #1a1a1a;
    margin-top: auto;
}

.footer-bg hr {
    opacity: 0.15;
}

.ny-banner {
    width: 100%;
    height: 350px;
    position: relative;
    overflow: hidden;
}

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

.ny-banner::after {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom, rgba(0,0,0,0.15) 0%, rgba(0,0,0,0.5) 100%);
}

.ny-banner-txt {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    color: #fff;
    z-index: 2;
}

.ny-banner-txt h1 {
    font-size: 36px;
    letter-spacing: 4px;
    font-weight: bold;
    animation: fadeInUp 0.8s ease;
}

.ny-crumb {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    color: rgba(255,255,255,0.8);
    font-size: 13px;
}

.ny-crumb a {
    color: rgba(255,255,255,0.7);
    text-decoration: none;
}

.ny-crumb a:hover {
    color: #fff;
}

.yw-detail-title {
    font-size: 22px;
    padding-bottom: 12px;
    border-bottom: 2px solid #C8102E;
    display: inline-block;
}

.yw-link {
    display: inline-block;
    color: #fff;
    background: #C8102E;
    font-size: 13px;
    text-decoration: none;
    margin-top: 12px;
    padding: 6px 18px;
    font-weight: 500;
    letter-spacing: 1px;
    transition: background 0.3s;
}

.yw-link:hover {
    background: #a50d24;
    color: #fff;
}

.js-icon-img {
    width: 32px;
    height: 32px;
    object-fit: contain;
}



.js-ul li {
    font-size: 15px;
    color: #555;
    line-height: 2.4;
    padding-left: 18px;
    position: relative;
}

.js-ul li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 14px;
    width: 8px;
    height: 8px;
    background: #C8102E;
}

.js-section-num {
    width: 52px;
    height: 52px;
    background: #C8102E;
    color: #fff;
    font-size: 22px;
    font-weight: bold;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: "Georgia", serif;
}

.lx-card {
    border: 1px solid #e5e5e5;
    border-radius: 0;
    transition: transform 0.3s ease, border-color 0.3s ease;
}

.lx-card:hover {
    transform: translateY(-4px);
    border-color: #C8102E;
}

.lx-icon {
    font-size: 28px;
    color: #C8102E;
    margin-bottom: 10px;
}

.dh-nav.scrolled {
    box-shadow: 0 2px 12px rgba(0,0,0,0.08);
}

.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

.yw-card-img img {
    transition: transform 0.4s ease;
}

.yw-card:hover .yw-card-img img {
    transform: scale(1.05);
}

.img-box img {
    transition: transform 0.4s ease;
}

.img-box:hover img {
    transform: scale(1.03);
}

.img-box-sm img {
    transition: transform 0.4s ease;
}

.img-box-sm:hover img {
    transform: scale(1.03);
}

.img-box-md img {
    transition: transform 0.4s ease;
}

.img-box-md:hover img {
    transform: scale(1.03);
}

.back-top {
    position: fixed;
    bottom: 40px;
    right: 30px;
    width: 44px;
    height: 44px;
    background: #C8102E;
    color: #fff;
    border: none;
    cursor: pointer;
    font-size: 20px;
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 999;
    transition: opacity 0.3s;
}

.back-top.show {
    display: flex;
}

.back-top:hover {
    background: #a50d24;
}

.sj-item:hover strong {
    transform: scale(1.1);
}

.navbar-brand:hover .dh-logo-txt {
    opacity: 0.8;
}

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

/* ========== 手机端适配 ========== */
@media (max-width: 768px) {
    .top-bar {
        font-size: 12px;
        padding: 6px 0;
    }

    .top-bar .container {
        flex-direction: column;
        gap: 2px;
        text-align: center;
    }

    .dh-nav {
        min-height: 56px;
    }

    .dh-nav .container {
        flex-wrap: wrap;
    }

    .dh-nav .navbar-collapse {
        background: #fff;
        border-top: 1px solid #eee;
        margin-top: 8px;
        padding: 10px 0;
    }

    .dh-nav .nav-link {
        padding: 10px 15px;
        font-size: 15px;
        border-bottom: 1px solid #f5f5f5;
    }

    .dh-nav .nav-link::after {
        display: none;
    }

    .dh-logo-img {
        height: 36px;
    }

    .dh-logo-txt {
        font-size: 15px;
        margin-left: 8px;
        letter-spacing: 0.5px;
    }

    .navbar-toggler {
        border: 1px solid #ddd;
        padding: 4px 8px;
    }

    .navbar-toggler-icon {
        width: 20px;
        height: 20px;
    }

    .banner-img {
        height: 300px;
    }

    .carousel-caption {
        bottom: 25%;
    }

    .carousel-caption h2 {
        font-size: 22px;
        letter-spacing: 2px;
    }

    .carousel-caption p {
        font-size: 14px;
        letter-spacing: 1px;
    }

    .mk-title {
        font-size: 22px;
    }

    .sj-item {
        padding: 25px 10px;
    }

    .sj-item strong {
        font-size: 22px;
    }

    .sj-item span {
        font-size: 11px;
    }

    .sj-section .row {
        flex-wrap: wrap;
    }

    .sj-section .col {
        flex: 0 0 50%;
        max-width: 50%;
    }

    .sj-item::after {
        display: none;
    }

    .yw-card-img {
        height: 160px;
    }

    .img-box {
        height: 220px;
    }

    .img-box-lg {
        height: 250px;
    }

    .img-box-sm {
        height: 300px;
    }

    .img-box-sm .zz-cert {
        object-fit: contain;
        background: #fff;
    }

    .img-box-md {
        height: 140px;
    }

    .ny-banner {
        height: 200px;
    }

    .ny-banner-txt h1 {
        font-size: 24px;
        letter-spacing: 2px;
    }

    .ny-crumb {
        font-size: 12px;
        bottom: 12px;
    }

    .container-fluid.px-5 {
        padding-left: 15px !important;
        padding-right: 15px !important;
    }

    .yw-detail-title {
        font-size: 18px;
    }

    .js-ul li {
        font-size: 14px;
        line-height: 2;
    }

    .js-section-num {
        width: 40px;
        height: 40px;
        font-size: 18px;
    }

    .footer-bg {
        padding-top: 30px !important;
    }

    .footer-bg .col-lg-3,
    .footer-bg .col-lg-6 {
        text-align: center;
    }

    .footer-bg .d-flex.align-items-center {
        justify-content: center;
    }

    .back-top {
        width: 38px;
        height: 38px;
        bottom: 20px;
        right: 15px;
        font-size: 16px;
    }

    .lx-icon {
        font-size: 24px;
    }

    section.py-5 {
        padding-top: 2.5rem !important;
        padding-bottom: 2.5rem !important;
    }
}

@media (max-width: 576px) {
    .dh-logo-txt {
        font-size: 14px;
        letter-spacing: 0;
        max-width: 180px;
        line-height: 1.3;
    }

    .dh-logo-img {
        height: 32px;
    }

    .banner-img {
        height: 220px;
    }

    .carousel-caption h2 {
        font-size: 18px;
    }

    .carousel-caption p {
        font-size: 12px;
    }

    .mk-title {
        font-size: 20px;
    }

    .sj-section .col {
        flex: 0 0 50%;
        max-width: 50%;
    }

    .sj-item strong {
        font-size: 20px;
    }

    .ny-banner {
        height: 160px;
    }

    .ny-banner-txt h1 {
        font-size: 20px;
    }

    .yw-card-img {
        height: 120px;
    }

    .yw-card .card-body {
        padding: 10px;
    }

    .yw-card .card-title {
        font-size: 14px;
    }

    .yw-card .card-text {
        font-size: 12px;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }

    .yw-link {
        font-size: 12px;
        padding: 4px 12px;
    }

    .js-card .card-body {
        padding: 12px 8px;
    }

    .js-card .card-title {
        font-size: 13px;
    }

    .js-card .card-text {
        font-size: 11px;
    }

    .js-icon {
        width: 44px;
        height: 44px;
    }

    .js-icon-img {
        width: 24px;
        height: 24px;
    }

    .img-box {
        height: 180px;
    }

    .img-box-sm {
        height: 100px;
    }

    .img-box-md {
        height: 100px;
    }

    .wh-card .card-body {
        padding: 12px 8px;
    }

    .wh-card h4 {
        font-size: 16px;
    }

    .wh-card .card-text {
        font-size: 12px;
    }

    .lx-card .card-body {
        padding: 12px 8px;
    }

    .lx-card h6 {
        font-size: 13px;
    }

    .lx-card p {
        font-size: 11px;
    }
}