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

body {
    font-family: system-ui, 'Segoe UI', 'Roboto', 'Helvetica Neue', sans-serif;
    line-height: 1.4;
    background: linear-gradient(135deg, #ffffff 0%, #D7D7D7 100%);
    min-height: 100vh;
    position: relative;
    color: #1e293b;
    font-synthesis: none;
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}
        .video-background {
            position: fixed;      /* 固定定位，覆盖整个视口 */
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            z-index: -1;         /* 放在最底层 */
            overflow: hidden;
        }
        .video-background video {
            position: absolute;
            top: 50%;
            left: 50%;
            min-width: 100%;
            min-height: 100%;
            width: auto;
            height: auto;
            transform: translate(-50%, -50%);  /* 居中视频 */
            object-fit: cover;   /* 覆盖整个容器，保持比例 */
        }
        .overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.3);  /* 半透明黑色遮罩 */
            z-index: -1;
        }
h1, h2, h3, h4, h5, h6 {
    color: white;
    font-weight: 600;
    line-height: 1.2;
    letter-spacing: -0.02em;
}
p {
    color: white;
    margin-bottom: 1rem;
}

a {
    color: white;
    text-decoration: none;
    transition: color 0.2s ease;
}

a:hover {
    color: #C82E31;
}

ul, ol {
    color: white;
}

li {
    color: inherit;
}

small, .text-small, .caption {
    color: white;
    font-size: 0.875rem;
}

.text-muted {
    color: white;
}

.text-primary {
    color: white;
}

.text-secondary {
    color: white;
}

.text-light {
    color: white;
}

strong, b {
    color: white;
    font-weight: 600;
}

em, i {
    color: inherit;
}

table {
    color: white;
}

th {
    color: white;
    font-weight: 600;
}

td {
    color: white;
}

button, .btn {
    color: white;
}

.btn-primary {
    color: white;
}

input, textarea, select {
    color: #1e293b;
}

input::placeholder, textarea::placeholder, select::placeholder {
    color: #94a3b8;
}

.nav-links a {
    color: white;
}

.nav-links a:hover,
.nav-links .active {
    color: #C82E31;
}

.footer {
    color: white;
}

.footer a {
    color: white;
}

.footer a:hover {
    color: #C82E31;
}

.footer h1, .footer h2, .footer h3, .footer h4, .footer h5, .footer h6 {
    color: white;
}

.footer p, .footer li {
    color: white;
}

.card {
    color: white;
}

.card-title {
    color: white;
}

.card-text {
    color: white;
}

.news-title {
    color: white;
}

.news-date {
    color: white;
}

.news-excerpt {
    color: white;
}

.sidebar-card h5 {
    color: #0f172a;
}

.category-list a {
    color: #334155;
}

.category-list a:hover {
    color: #0a58ca;
}

.hot-list a {
    color: #1e293b;
}

.hot-title {
    color: #1e293b;
}

.hot-meta {
    color: #6c757d;
}

.tag {
    color: white;
}

.tag:hover {
    color: 1B4F93;
}

.page-item .page-link {
    color: #0a58ca;
}

.page-item.active .page-link {
    color: white;
}

.hero {
    color: white;
}

.hero h1, .hero p {
    color: white;
}

.hero-btn {
    color: #8E1E20;
}

.lead {
    color: white;
}

.lead .about-text p {
    color: white;
}

.cta h2 {
    color: white;
}

.cta p {
    color: white;
}

.card-item h4 {
    color: white;
}

.card-item p {
    color: white;
}

.product-card .card-title {
    color: white;
}

.product-card .card-text {
    color: white;
}

.contact-info .info-section h5 {
    color: white;
}

.contact-info .info-section p {
    color: white;
}

.social-link {
    color: white;
}

.social-link:hover {
    color: #C82E31;
}


label {
    color: white;
}

.checkbox-group label {
    color: white;
}

.footer-bottom {
    color: white;
}

.footer-bottom a {
    color: white;
}

.footer-bottom a:hover {
    color: #C82E31;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}
.contactcontainer {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
background: url('images/diqiu.gif') no-repeat center;
    background-size: auto;             /* 或 contain */
    height: 280px;
}

.navbar {
    background: rgba(155, 155, 155, 0.85);
    padding: 0.75rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.05);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: white;
    font-weight: 600;
    font-size: 1.2rem;
}

.brand img {
    height: 44px;
    width: auto;
    max-width: 220px;
    object-fit: contain;
}

.nav-links {
    display: flex;
    gap: 28px;
    list-style: none;
    align-items: center;
    flex-wrap: wrap;
}

.nav-links a {
    text-decoration: none;
    font-weight: 500;
    transition: opacity 0.2s;
    padding-bottom: 4px;
}

.nav-links a:hover,
.nav-links .active {
    opacity: 0.85;
    border-bottom: 2px solid white;
}


.search-form {
    display: flex;
    gap: 8px;
    background: rgba(255, 255, 255, 0.15);
    padding: 4px 8px;
    border-radius: 40px;
    align-items: center;
}

.search-input {
    background: transparent;
    border: none;
    padding: 6px 12px;
    color: white;
    outline: none;
    font-size: 0.9rem;
    width: 170px;
}

.search-input::placeholder {
    color: rgba(255, 255, 255, 0.7);
}

.search-btn {
    background: none;
    border: none;
    color: white;
    cursor: pointer;
    font-size: 1rem;
    display: flex;
    align-items: center;
    padding: 0 6px;
}


@media (max-width: 780px) {
    .nav-container {
        flex-direction: column;
        align-items: stretch;
    }
    .nav-links {
        justify-content: space-between;
        gap: 16px;
    }
    .search-form {
        align-self: flex-start;
        margin-top: 6px;
    }
}

.page-header {
    backdrop-filter: blur(2px);
    padding: 60px 0;
    text-align: center;
    border-bottom: 1px solid #e2e8f0;
}

.page-header h1 {
    font-size: 2.6rem;
    margin-bottom: 12px;
    font-weight: 700;
}

.page-header .lead {
    font-size: 1.2rem;
    max-width: 680px;
    margin: 0 auto;
}

.hero {
    padding: 80px 0;
    text-align: center;
    border-radius: 0 0 40px 40px;
    margin-bottom: 20px;
}

.hero h1 {
    font-size: 2.6rem;
    margin-bottom: 20px;
    font-weight: 700;
    letter-spacing: -0.01em;
}

.hero p {
    font-size: 1.2rem;
    max-width: 720px;
    margin: 0 auto 32px;
    opacity: 0.92;
}

.hero-btn {
background-color: rgba(241, 245, 249, 0.2);
    padding: 12px 32px;
    border-radius: 40px;
    text-decoration: none;
    font-weight: 600;
    display: inline-block;
    transition: transform 0.2s, box-shadow 0.2s;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}

.hero-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}

.section {
    padding: 70px 0;
}

.section-title {
    font-size: 2rem;
    margin-bottom: 32px;
    font-weight: 600;
    letter-spacing: -0.3px;
}

.lead {
    font-size: 1.2rem;
    font-weight: 500;
    margin-bottom: 16px;
}
.leadsmall {
    font-size: 12px;
    margin-bottom: 16px;
text-align: left;
}


.btn-primary {
background-color: rgba(241, 245, 249, 0.2);
    padding: 10px 24px;
    border-radius: 30px;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-weight: 500;
    transition: background 0.2s;
    margin-top: 8px;
    border: none;
    cursor: pointer;
}

.btn-primary:hover {
    background-color: #084298;
}

.about-grid {
    display: flex;
    gap: 48px;
    align-items: center;
    flex-wrap: wrap;
}

.about-text {
    flex: 1;
}

.about-text p {
    margin-bottom: 18px;
}

.about-image {
    flex: 1;
}

.about-image img {
    width: 100%;
    border-radius: 24px;
    box-shadow: 0 20px 35px -12px rgba(0, 0, 0, 0.15);
    object-fit: cover;
    max-height: 400px;
}

.cta {
    background: transparent;
    border-radius: 32px;
    text-align: center;
    padding: 56px 32px;
    margin: 40px 0 60px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
}

.cta h2 {
    font-size: 1.9rem;
    margin-bottom: 16px;
}

.cta .btn-large {
background-color: rgba(241, 245, 249, 0.2);
    padding: 14px 36px;
    font-size: 1.1rem;
    border-radius: 40px;
    text-decoration: none;
    display: inline-block;
    margin-top: 12px;
    font-weight: 600;
    transition: background 0.2s;
}

.cta .btn-large:hover {
    background-color: #084298;
}

.cards-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 30px;
    justify-content: center;
}

.card-item {
    flex: 1;
    min-width: 260px;
    background: transparent;
    backdrop-filter: blur(4px);
    border-radius: 28px;
    box-shadow: 0 12px 28px rgba(0, 0, 0, 0.05);
    padding: 32px 24px;
    text-align: center;
    transition: transform 0.2s, box-shadow 0.2s;
    border: 1px solid rgba(255, 255, 255, 0.5);
}

.card-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 30px -12px rgba(0, 0, 0, 0.12);
    background: rgba(255, 255, 255, 0.15);
}

.card-icon {
    font-size: 3rem;
    margin-bottom: 20px;
    display: inline-block;
}

.card-item h4 {
    font-size: 1.5rem;
    margin-bottom: 16px;
    font-weight: 600;
}

.tabs-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    border-bottom: 1px solid #e2e8f0;
    margin-bottom: 28px;
}

.tab-btn {
    background: rgba(255, 255, 255, 0.15);
    border: none;
    padding: 12px 24px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    border-radius: 8px 8px 0 0;
}

.tab-btn:hover {
    background-color: rgba(241, 245, 249, 0.5);
}

.tab-btn.active {
    border-bottom: 3px solid #0a58ca;
    background-color: rgba(241, 245, 249, 0.5);
}

.products-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 30px;
    margin-top: 20px;
}

.product-card {
    flex: 1 1 calc(33.333% - 30px);
    min-width: 260px;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(2px);
    border-radius: 20px;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.05);
    overflow: hidden;
    transition: transform 0.2s, box-shadow 0.2s;
    border: 1px solid rgba(238, 242, 255, 0.8);
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 30px -12px rgba(0, 0, 0, 0.12);
    background-color: rgba(241, 245, 249, 0.5);
}

.product-card img {
    height: 40px;
    display: flex;
    background: transparent;
    width: auto;
    display: block;
    margin: 0 0;
}

.card-body {
    padding: 20px;
margin-top: -20px;
}



.card-text {
    margin-bottom: 18px;
    font-size: 0.9rem;
}

.card-footer-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 8px;
}

.badge {
    padding: 4px 12px;
    border-radius: 40px;
    font-size: 0.75rem;
    font-weight: 600;
    display: inline-block;
}

.badge-primary {
    background-color: #0a58ca;
    color: white;
}

.badge-success {
    background-color: #198754;
    color: white;
}

.badge-warning {
    background-color: #ffc107;
}

.btn-outline {
    background: transparent;
    border: 1px solid #0a58ca;
    padding: 6px 16px;
    border-radius: 40px;
    text-decoration: none;
    font-size: 0.8rem;
    font-weight: 500;
    transition: all 0.2s;
}

.btn-outline:hover {
    background: #0a58ca;
}

.news-layout {
    display: flex;
    flex-wrap: wrap;
    gap: 40px;
    margin: 60px 0;
}

.news-main {
    flex: 2;
    min-width: 260px;
}

.news-sidebar {
    flex: 1;
    min-width: 240px;
}

.filter-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 32px;
    border-bottom: 1px solid #e2e8f0;
    padding-bottom: 12px;
}

.filter-btn {
    background: rgba(255, 255, 255, 0.15);
    border: none;
    padding: 8px 20px;
    border-radius: 40px;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

.filter-btn:hover {
    background-color: rgba(241, 245, 249, 0.5);
}

.filter-btn.active {
    background-color: rgba(241, 245, 249, 0.5);
}

.news-card {
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(2px);
    border-radius: 20px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
    margin-bottom: 30px;
    overflow: hidden;
    transition: transform 0.2s, box-shadow 0.2s;
    border: 1px solid rgba(238, 242, 255, 0.8);
}

.news-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.1);
    background-color: rgba(241, 245, 249, 0.5);
}

.news-card-inner {
    display: flex;
    flex-wrap: wrap;
}

.news-img {
    flex: 0 0 200px;
    min-height: 160px;
}

.news-img img {
    height: 100px;
    display: flex;
    background: transparent;
    width: auto;
    margin: 0 auto;
}

.news-content {
    flex: 1;
    padding: 20px 24px;
}

.news-badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 40px;
    font-size: 0.7rem;
    font-weight: 600;
    margin-bottom: 12px;
}

.badge-company {
    background: rgba(255, 255, 255, 0.15);
    color: white;
}

.badge-industry {
    background: rgba(255, 255, 255, 0.15);
    color: white;
}

.badge-media {
    background: rgba(255, 255, 255, 0.15);
}

.news-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.news-date {
    font-size: 0.8rem;
    margin-bottom: 12px;
}

.news-excerpt {
    margin-bottom: 16px;
    line-height: 1.5;
}

.btn-outline-sm {
    display: inline-block;
    border: 1px solid #0a58ca;
    padding: 6px 18px;
    border-radius: 40px;
    text-decoration: none;
    font-size: 0.8rem;
    font-weight: 500;
    transition: all 0.2s;
}

.btn-outline-sm:hover {
    background: #0a58ca;
}

.sidebar-card {
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(2px);
    border-radius: 20px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
    padding: 20px;
    margin-bottom: 30px;
    border: 1px solid rgba(238, 242, 255, 0.8);
}

.sidebar-card h5 {
    font-size: 1.2rem;
    margin-bottom: 18px;
    font-weight: 600;
    border-left: 4px solid #0a58ca;
    padding-left: 12px;
}

.sidebar-search {
    display: flex;
    gap: 8px;
}

.sidebar-search input {
    background: rgba(255, 255, 255, 0.5);
    flex: 1;
    padding: 10px 14px;
    border: 1px solid #cbd5e1;
    border-radius: 40px;
    outline: none;
    font-size: 0.85rem;
}

.sidebar-search button {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    padding: 0 20px;
    border-radius: 40px;
    cursor: pointer;
    font-weight: 500;
}

.sidebar-search button:hover {
    background-color: rgba(241, 245, 249, 0.5);
}

.category-list {
    list-style: none;
}

.category-list li {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 0;
    border-bottom: 1px solid #eef2ff;
}

.category-list a {
    text-decoration: none;
    transition: color 0.2s;
}

.category-list a:hover {
    color: #0a58ca;
}

.cat-count {
    background: rgba(255, 255, 255, 0.15);
    padding: 2px 10px;
    border-radius: 40px;
    font-size: 0.75rem;
    font-weight: 500;
}

.hot-list {
    list-style: none;
}

.hot-list li {
    padding: 12px 0;
    border-bottom: 1px solid #eef2ff;
}

.hot-list a {
    text-decoration: none;
}

.hot-title {
    font-weight: 500;
    margin-bottom: 4px;
}

.hot-meta {
    font-size: 0.7rem;
    display: flex;
    justify-content: space-between;
}

.tag-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.tag {
    background: rgba(255, 255, 255, 0.15);
    padding: 6px 14px;
    border-radius: 40px;
    font-size: 0.75rem;
    text-decoration: none;
    transition: all 0.2s;
}

.tag:hover {
    background: #0a58ca;
}

.pagination {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 40px;
    flex-wrap: wrap;
}

.page-item .page-link {
    display: inline-block;
    padding: 8px 16px;
    border-radius: 40px;
    text-decoration: none;
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid #dee2e6;
    transition: all 0.2s;
}

.page-item.active .page-link {
    background: rgba(255, 255, 255, 0.5);
    border-color: #0a58ca;
}

.page-item.disabled .page-link {
    pointer-events: none;
    background: rgba(255, 255, 255, 0.15);
}

.page-item .page-link:hover:not(.disabled) {
    background: rgba(255, 255, 255, 0.5);
}

.contact-layout {
    display: flex;
    flex-wrap: wrap;
    gap: 40px;
    margin: 60px 0;
}

.contact-info {
    flex: 1.2;
    min-width: 280px;
}

.contact-form {
    flex: 1.8;
    min-width: 300px;
}

.card {
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(4px);
    border-radius: 24px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.05);
    border: 1px solid rgba(238, 242, 255, 0.8);
    overflow: hidden;
    height: 100%;
}

.card-body {
    padding: 28px 32px;
}

.card-title {
    font-size: 1.1rem;
    font-weight: 500;
    margin-bottom: 26px;
    border-left: 2px solid #C82E31;
    padding-left: 16px;
}

.info-section {
    margin-bottom: 28px;
}

.info-section h5 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.info-section p {
    margin-bottom: 6px;
    padding-left: 28px;
}

.social-icons {
    display: flex;
    gap: 16px;
    margin-top: 8px;
    padding-left: 28px;
}

.social-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(255, 255, 255, 0.15);
    padding: 6px 16px;
    border-radius: 40px;
    text-decoration: none;
    font-size: 0.9rem;
    transition: all 0.2s;
}

.social-link:hover {
    background-color: rgba(241, 245, 249, 0.5);
}


.form-group {
    margin-bottom: 20px;
}

.form-row {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    margin-bottom: 4px;
}

.form-row .form-group {
    flex: 1;
    margin-bottom: 0;
}

label {
    display: block;
    margin-bottom: 6px;
    font-weight: 500;
}

input, select, textarea {
    background-color: rgba(241, 245, 249, 0.2);
    width: 100%;
    padding: 12px 16px;
    border: 1px solid #cbd5e1;
    border-radius: 16px;
    font-size: 0.9rem;
    font-family: inherit;
    transition: border 0.2s, box-shadow 0.2s;
}

input:focus, select:focus, textarea:focus {
    outline: none;
    border-color: #0a58ca;
    box-shadow: 0 0 0 3px rgba(10, 88, 202, 0.1);
    background-color: rgba(241, 245, 249, 0.5);
}

.checkbox-group {
    display: flex;
    align-items: center;
    gap: 10px;
    margin: 20px 0;
}

.checkbox-group input {
    width: 18px;
    height: 18px;
    margin: 0;
}

.checkbox-group label {
    margin-bottom: 0;
    font-weight: normal;
}

.text-muted {
    font-size: 0.9rem;
    margin-bottom: 24px;
}

hr {
    margin: 20px 0;
    border: 0;
    border-top: 1px solid #e2e8f0;
}

.footer {
   background: rgba(255, 255, 255, 0.2);
    padding: 36px 0 32px;
    margin-top: 40px;
}

.footer-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 40px;
    justify-content: space-between;
    margin-bottom: 40px;
}

.footer-col {
    flex: 1;
    min-width: 180px;
}

.footer-col h5 {
    margin-bottom: 20px;
    font-size: 1.1rem;
    font-weight: 600;
}

.footer-col p, .footer-col li {
    font-size: 0.8rem;
    line-height: 1.4;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    text-decoration: none;
    transition: color 0.2s;
}

.social-icons {
background-image: url('images/shangbiao.png');
    background-size: contain;  
    background-repeat: no-repeat;
    background-position: center;
    height: 12vh;
    display: flex;
    gap: 18px;
    margin-top: 16px;
}

.social-icons a {
    font-size: 1.3rem;
    text-decoration: none;
}

.subscribe-form {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 12px;
}

.subscribe-form input {
    flex: 1;
    padding: 10px 14px;
    border: none;
    border-radius: 40px;
   background: rgba(255, 255, 255, 0.15);
    outline: none;
    font-size: 0.85rem;
}

.subscribe-form button {
    background-color: rgba(241, 245, 249, 0.2);
    border: none;
    padding: 8px 20px;
    border-radius: 40px;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.2s;
}

.subscribe-form button:hover {
    background-color: rgba(241, 245, 249, 0.5);
}

.footer-bottom {
    border-top: 1px solid #2d3a5e;
    padding-top: 28px;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 12px;
    font-size: 0.6rem;
}

.footer-bottom a {
    text-decoration: none;
    margin-left: 24px;
}

@media (max-width: 780px) {
    .products-grid .product-card {
        flex: 1 1 100%;
    }
    .tab-btn {
        padding: 8px 16px;
    }
    .news-card-inner {
        flex-direction: column;
    }
    .news-img {
        flex: auto;
        height: 180px;
    }
    .contact-layout {
        flex-direction: column;
    }
    .card-body {
        padding: 20px;
    }
}

@media (max-width: 700px) {
    .hero h1 {
        font-size: 2rem;
    }
    .section-title {
        font-size: 1.8rem;
    }
    .about-grid {
        flex-direction: column;
    }
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
    .footer-bottom a {
        margin: 0 12px;
    }
    .page-header h1 {
        font-size: 2rem;
    }
}