/* ===== TOP NAVIGATION ===== */
        .top-header {
            background: #1a1a2e;
            color: #fff;
            padding: 8px 0;
            font-size: 12px;
        }

        .top-header .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .top-header .logo-area {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .top-header .logo-area .logo-icon {
            width: 28px;
            height: 28px;
            background: #0055a5;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            font-weight: bold;
        }

        .top-header .logo-area .company-name {
            font-size: 16px;
            font-weight: bold;
        }

        .top-header .logo-area .company-name-en {
            font-size: 10px;
            color: #aaa;
            margin-top: -2px;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 28px;
        }

        .main-nav a {
            color: #ccc;
            font-size: 13px;
            transition: color 0.3s;
            position: relative;
        }

        .main-nav a:hover,
        .main-nav a.active {
            color: #fff;
        }

        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: -15px;
            left: 0;
            width: 100%;
            height: 3px;
            background: #0055a5;
        }

        .nav-right {
            display: flex;
            align-items: center;
            gap: 15px;
        }

        .nav-right .search-icon {
            cursor: pointer;
            font-size: 14px;
        }

        .nav-right .lang-switch {
            display: flex;
            align-items: center;
            gap: 5px;
            cursor: pointer;
            color: #ccc;
            font-size: 12px;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0;
        }

        /* ===== HERO BANNER ===== */
        .hero-banner {
            position: relative;
            height: 560px;
            overflow: hidden;
            display: flex;
            align-items: center;
        }

        /* 新增：英雄区全屏背景图片 */
        .hero-banner::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: url('https://picsum.photos/1920/560?random=1') no-repeat center center;
            background-size: cover;
            opacity: 0.4;
            z-index: 0;
        }

        .hero-banner::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1200 560"><defs><linearGradient id="g1" x1="0%25" y1="0%25" x2="100%25" y2="100%25"><stop offset="0%25" style="stop-color:%230a1628;stop-opacity:0.85"/><stop offset="100%25" style="stop-color:%230a1628;stop-opacity:0.3"/></linearGradient></defs><rect fill="url(%23g1)" width="1200" height="560"/></svg>');
            background-size: cover;
            z-index: 1;
        }

        .hero-bg-image {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            opacity: 0.4;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            color: #fff;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 40px;
            width: 100%;
        }

        .hero-content h1 {
			margin-top: 160px;
            font-size: 42px;
            font-weight: bold;
            line-height: 1.4;
            margin-bottom: 25px;
            text-shadow: 0 2px 10px rgba(0,0,0,0.3);
        }

        .hero-content p {
            font-size: 14px;
            color: #c0d8e8;
            margin-bottom: 80px;
            max-width: 500px;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 24px;
            background: #3083FD;
            color: #FFF;
            font-size: 14px;
            font-weight: bold;
            border: none;
            cursor: pointer;
            transition: all 0.3s;

        }

        .btn-primary:hover {
            background: #0055a5;
            color: #fff;
			border: 1px solid #FFF;
        }

        .btn-primary .arrow {
            font-size: 16px;
            transition: transform 0.3s;
        }

        .btn-primary:hover .arrow {
            transform: translateX(3px);}
        
       .btn-primary1 {
            display: inline-flex;
            align-items: center;
            gap: 8px;
		    margin: 0 8px 0 0;
            padding: 10px 24px;
            background: #3083FD;
            color: #FFF;
            font-size: 14px;
            font-weight: bold;
            border: none;
            cursor: pointer;
            transition: all 0.3s;
		    border: 1px solid #3083FD;
        }
        .btn-primary1 a {
            color: #FFF;
        }

        .btn-primary1:hover {
            background: #0055a5;
            color: #fff;
			border: 1px solid #FFF;
        }

        .btn-primary1 .arrow {
            font-size: 16px;
            transition: transform 0.3s;
        }

        .btn-primary1:hover .arrow {
            transform: translateX(3px);
        }
        
        .btn-primary2 {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 24px;
            background: rgba(108, 92, 231, 0);
            color: #FFF;
            font-size: 13px;
            font-weight: bold;
            border: none;
            cursor: pointer;
            transition: all 0.3s;
		    border: 1px solid #FFF;
        }
        .btn-primary2 a {
            color: #FFF;
        }

        .btn-primary2:hover {
            background: #0055a5;
            color: #fff;
			border: 1px solid #FFF;
        }

        .btn-primary2 .arrow {
            font-size: 16px;
            transition: transform 0.3s;
        }

        .btn-primary2:hover .arrow {
            transform: translateX(3px);
        }


        .hero-worker {
            position: absolute;
            right: 40px;
            bottom: 0;
            z-index: 2;
            width: 450px;
            height: 400px;
            background: linear-gradient(180deg, transparent 0%, rgba(10,22,40,0.6) 100%);
            border-radius: 8px;
            display: flex;
            align-items: flex-end;
            justify-content: center;
            overflow: hidden;
        }

        .hero-worker-img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            opacity: 0.9;
        }

        /* ===== ABOUT US ===== */
      .aboutbg {
	   max-width: auto;
	   margin: 0 auto;
	   height: 680px;
	   padding: 88px 0;
	   box-sizing: border-box;
	   background: url(../images/ab_bg.png) no-repeat center;
	   background-size: cover;
        }
        .about-section {
            padding: 80px 0;
            position: relative;
			
        }

        .about-section::before {
           content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-size: cover;
            opacity: 0.5;
        }

        .section-header {
            margin-bottom: 40px;
            position: relative;
            z-index: 1;
        }

        .section-header h2 {
            font-size: 28px;
            color: #0055a5;
            font-weight: bold;
            margin-bottom: 2px;
			text-align: left;
        }

        .section-header .subtitle {
            font-size: 16px;
            color: #0055a5;
            margin-bottom: 15px;
			text-align: left;
        }

        .section-header .line {
            width: 280px;
            height: 2px;
            background: #0055a5;
        }

        .about-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 100px;
            position: relative;
            z-index: 1;
        }

        .about-text h3 {
            font-size: 18px;
            color: #333;
            margin-bottom: 12px;
            font-weight: bold;
        }

        .about-text p {
            font-size: 14px;
            color: #333;
            line-height: 1.8;
            margin-bottom: 15px;
			text-align: justify;
			overflow: hidden;
           display: -webkit-box;
           -webkit-line-clamp: 4; /* 这里改行数：4行 / 5行 */
           -webkit-box-orient: vertical;			
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 24px;
            background: #0055a5;
            color: #fff;
            font-size: 14px;
            font-weight: bold;
            border: none;
            cursor: pointer;
            transition: all 0.3s;
        }
           .btn-secondary a {
            color: #fff;
  
        }

        .btn-secondary:hover {
            background: #003d7a;
        }

        .about-cards {
            display: grid;
            grid-template-columns: 1fr 1fr;
            grid-template-rows: 1fr 1fr;
            gap: 0;
            height: 240px;
        }

        .about-card {
			top: -80px;
            padding: 20px;
            color: #fff;
            display: flex;
            flex-direction: column;
            justify-content: center;
            cursor: pointer;
            transition: all 0.3s;
            position: relative;
        }
       
        .about-card:hover {
            opacity: 0.9;
        }

        .about-card.culture {
            background: #5cc5b8;
            grid-column: 2;
            grid-row: 1;
        }

        .about-card.honor {
            background: #3a8fff;
            grid-column: 1;
            grid-row: 2;
        }

        .about-card.contact {
            background: #1a4fa0;
            grid-column: 2;
            grid-row: 2;
        }

        .about-card h4 {
			color: #FFF;
            font-size: 15px;
            margin-bottom: 4px;
        }

        .about-card span {
			color: #FFF;
            font-size: 11px;
            opacity: 0.8;
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        .about-card .plus {
			color: #FFF;
            position: absolute;
            bottom: 15px;
            left: 20px;
            font-size: 18px;
            font-weight: 300;
        }

        .about-stats {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            margin-top: 50px;
            position: relative;
            z-index: 1;
        }

        .stat-item {
            text-align: center;
            position: relative;
        }

        .stat-item:not(:last-child)::after {
            content: '';
            position: absolute;
            right: -15px;
            top: 10px;
            width: 1px;
            height: 40px;
            background: #0055A5;
        }

        .stat-item .number {
            font-size: 36px;
            font-weight: bold;
            color: #0055a5;
            line-height: 1;
        }

        .stat-item .unit {
            font-size: 24px;
            color: #0055a5;
            margin-left: 2px;
        }

        .stat-item .label {
			font-weight: 500;
            font-size: 12px;
            color: #333;
            margin-top: 5px;
        }

        .stat-item .sub-label {
            font-size: 11px;
            color: #bbb;
        }

        /* ===== PRODUCTS ===== */
        .products-section {
            padding: 80px 0;
            background: #fff;
            position: relative;
        }

        .products-header {
            display: flex;
            justify-content: space-between;
            align-items: flex-start;
            margin-bottom: 40px;
        }

        .products-nav {
            display: flex;
            gap: 40px;
            margin-top: 15px;
        }

        .products-nav a {
            font-size: 14px;
            color: #666;
            transition: color 0.3s;
            cursor: pointer;
        }

        .products-nav a.active {
            color: #0055a5;
            font-weight: bold;
        }

        .products-nav a:hover {
            color: #0055a5;
        }
        .products-nav a:hover {
           	color: #fff;
	background: var(--colour1);
	border-color: var(--colour1);
        }
        .products-carousel {
            position: relative;
            display: flex;
            align-items: center;
        }

        .carousel-arrow {
            width: 40px;
            height: 40px;
            background: rgba(0,85,165,0.1);
            border: none;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: #0055a5;
            transition: all 0.3s;
            z-index: 2;
        }

        .carousel-arrow:hover {
            background: #0055a5;
            color: #fff;
        }

        .carousel-arrow.left {
            margin-right: 20px;
        }

        .carousel-arrow.right {
            margin-left: 20px;
        }

        .products-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            flex: 1;
        }

        .product-card {
            background: #fff;
            border: 1px solid #eee;
            overflow: hidden;
            transition: all 0.3s;
            position: relative;
        }

        .product-card:hover {
            box-shadow: 0 10px 30px rgba(0,0,0,0.1);
            transform: translateY(-5px);
        }

        .product-image {
            height: 220px;
            background: #f5f7fa;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 20px;
            position: relative;
        }

        .product-image svg {
            width: 100%;
            height: 100%;
        }

        .product-info {
            padding: 20px;
            position: relative;
        }

        .product-info h4 {
            font-size: 14px;
            color: #333;
            margin-bottom: 8px;
        }

        .product-info p {
            font-size: 12px;
            color: #999;
            line-height: 1.6;
        }

        .product-arrow {
            position: absolute;
            right: 20px;
            bottom: 20px;
            width: 28px;
            height: 28px;
            background: #fff;
            border: 1px solid #ddd;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #0055a5;
            font-size: 12px;
            cursor: pointer;
            transition: all 0.3s;
        }

        .product-arrow:hover {
            background: #0055a5;
            color: #fff;
            border-color: #0055a5;
        }

        .products-bg {
          background-color: #025BAB; 
		  height: 200px; 
		  position: absolute;
	      left: 0; 
	      bottom: 0; 
		  width:100%;
	      margin: 0 auto;
		  z-index: -9999;
        }

        /* ===== PRODUCTION CAPACITY ===== */
        .capacity-section {
            position: relative;
            height: 450px;
            overflow: hidden;
            display: flex;
            align-items: center;
        }
        .capacitybg {
	   max-width: auto;
	   margin: 0 auto;
	   height: 680px;
	   padding: 88px 0;
	   box-sizing: border-box;
	   background: url(../images/capacitybg.png) no-repeat center;
	   background-size: cover;
        }
        /* 新增：生产能力区全屏背景图片 */
        .capacity-section::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: url('https://picsum.photos/1920/450?random=2') no-repeat center center;
            background-size: cover;
            opacity: 0.25;
            z-index: 0;
        }

        .capacity-bg {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(135deg, #0a1628 0%, #1a3a6c 50%, #0a2a5a 100%);
            z-index: 1;
        }

        .capacity-overlay {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1200 450"><defs><radialGradient id="spark" cx="60%25" cy="60%25" r="30%25"><stop offset="0%25" style="stop-color:%23ffcc00;stop-opacity:0.6"/><stop offset="100%25" style="stop-color:%23ffcc00;stop-opacity:0"/></radialGradient></defs><rect fill="url(%23spark)" width="1200" height="450"/><g opacity="0.3"><line x1="400" y1="300" x2="700" y2="250" stroke="%23ffcc00" stroke-width="2"/><line x1="420" y1="310" x2="720" y2="260" stroke="%23ff9900" stroke-width="1.5"/><circle cx="600" cy="280" r="40" fill="%23ffcc00" opacity="0.4"/><circle cx="600" cy="280" r="20" fill="%23fff" opacity="0.6"/></g></svg>');
            background-size: cover;
            z-index: 2;
        }

        .capacity-content {
            position: relative;
            z-index: 3;
            color: #fff;
            max-width: 600px;
            padding: 0 40px;
        }

        .capacity-content h2 {
            font-size: 28px;
            font-weight: bold;
            margin-bottom: 2px;
        }

        .capacity-content .subtitle {
            font-size: 14px;
            opacity: 0.7;
            margin-bottom: 20px;
        }

        .capacity-content .line {
            width: 200px;
            height: 2px;
            background: #fff;
            opacity: 0.5;
            margin-bottom: 25px;
        }

        .capacity-content p {
            font-size: 13px;
            line-height: 2;
            color: #c0d8e8;
            margin-bottom: 30px;
        }

        /* ===== NEWS CENTER ===== */
        .news-section {
            padding: 80px 0;
            background: #fff;
        }

        .news-header {
            display: flex;
            justify-content: space-between;
            align-items: flex-start;
            margin-bottom: 40px;
        }

        .news-nav {
            display: flex;
            gap: 40px;
            margin-top: 15px;
        }

        .news-nav a {
            font-size: 14px;
            color: #666;
            transition: color 0.3s;
            cursor: pointer;
        }

        .news-nav a.active {
            color: #0055a5;
            font-weight: bold;
        }

        .news-nav a:hover {
            color: #0055a5;
        }

        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .news-card {
            border: 1px solid #e8e8e8;
            overflow: hidden;
            transition: all 0.3s;
        }

        .news-card:hover {
            box-shadow: 0 5px 20px rgba(0,0,0,0.08);
        }

        .news-card.featured {
            border: none;
        }

        .news-date {
            padding: 20px 20px 10px;
            display: flex;
            align-items: baseline;
            gap: 8px;
        }

        .news-date .day {
            font-size: 16px;
            font-weight: bold;
            color: #0055a5;
        }

        .news-date .year {
            font-size: 12px;
            color: #999;
        }

        .news-card h4 {
            padding: 0 20px;
            font-size: 14px;
            color: #333;
            margin-bottom: 10px;
            font-weight: bold;
        }

        .news-card p {
            padding: 0 20px;
            font-size: 12px;
            color: #999;
            line-height: 1.8;
        }

        .news-card.featured .news-image {
            height: 180px;
            background: linear-gradient(135deg, #1a3a5c, #ff9933);
            margin: 15px 20px;
            position: relative;
            overflow: hidden;
        }

        .news-card.featured .news-image svg {
            width: 100%;
            height: 100%;
        }

        .news-card .more-link {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            padding: 15px 20px;
            font-size: 12px;
            color: #0055a5;
            cursor: pointer;
            transition: color 0.3s;
        }

        .news-card .more-link:hover {
            color: #003d7a;
        }

        .news-card.featured .more-link {
            background: #0055a5;
            color: #fff;
            margin-top: 10px;
        }

        .news-card.featured .more-link:hover {
            background: #003d7a;
        }
       .center-bg {
          background-color: #025BAB; 
	      left: 0; 
	      bottom: 0; 
		  width:100%;
        }

      .partners-section {
            padding:80px 0;
            background:#F5F7FA;
        }

        .partners-header {
            display: flex;
            justify-content: space-between;
            align-items: flex-start;
            margin-bottom: 50px;
        }

        .partners-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 20px;
        }

        .partner-logo {
            background: #fff;
            padding: 25px 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            border: 1px solid #eee;
            transition: all 0.3s;
            height: 80px;
        }

        .partner-logo:hover {
            box-shadow: 0 5px 15px rgba(0,0,0,0.08);
            border-color: #0055a5;
        }

        .partner-logo span {
            font-size: 14px;
            color: #666;
            font-weight: bold;
        }

        .partner-logo .logo-text {
            font-size: 12px;
            color: #999;
        }

        /* ===== FOOTER ===== */
        .footer {
            background: #1a1a2e;
            color: #fff;
        }

        .footer-top {
            padding: 30px 0;
            border-bottom: 1px solid rgba(255,255,255,0.1);
        }

        .footer-top .container {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .footer-top .icon {
            width: 20px;
            height: 20px;
        }

        .footer-top span {
            font-size: 13px;
            color: #ccc;
        }

        .footer-main {
            padding: 40px 0;
        }

        .footer-main .container {
            display: grid;
            /* 调整网格：前7列平分，最后1列给二维码（固定到最右侧） */
            grid-template-columns: 1.5fr 1.5fr 1.5fr 1.5fr 2fr 1fr 1fr auto; 
            gap: 30px;
            align-items: start; /* 确保顶部对齐 */
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 30px;
            grid-column: 1 / -1;
            padding-bottom: 20px;
            border-bottom: 1px solid rgba(255,255,255,0.1);
        }

        .footer-brand .logo-circle {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .footer-brand .logo-circle svg {
            width: 24px;
            height: 24px;
        }

        .footer-brand .brand-text h3 {
            font-size: 16px;
            margin-bottom: 2px;
        }

        .footer-brand .brand-text p {
            font-size: 11px;
            color: #888;
        }

        .footer-col h4 {
            font-size: 13px;
            color: #fff;
            margin-bottom: 15px;
            font-weight: bold;
        }

        .footer-col a {
            display: block;
            font-size: 12px;
            color: #888;
            margin-bottom: 8px;
            transition: color 0.3s;
        }

        .footer-col a:hover {
            color: #fff;
        }

        .footer-qr {
			grid-column: 8; /* 固定到第8列（最右侧） */
            text-align: center;
        }
       /* 响应式适配调整 */
        @media (max-width: 1024px) {
            .footer-main .container {
                grid-template-columns: repeat(4, 1fr) auto; /* 平板下前4列+右侧二维码 */
            }
            .footer-qr {
                grid-column: 5; /* 平板下第5列 */
            }
        }

        @media (max-width: 768px) {
            .footer-main .container {
                grid-template-columns: repeat(2, 1fr); /* 手机下取消单独列，回归网格 */
            }
            .footer-qr {
                grid-column: 2; /* 手机下第2列 */
                margin-top: 15px;
            }
        }
        .footer-qr .qr-code {
            width: 80px;
            height: 80px;
            background: #fff;
            margin: 0 auto 0px;
            display: flex;
            align-items: center;
            justify-content: center;
        }
           .footer-qr .qr-code img {
            width: 80px;
            height: 80px;
            background: #fff;
            margin: 0 auto 0px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .footer-qr .qr-code svg {
            width: 60px;
            height: 60px;
        }

        .footer-qr p {
            font-size: 12px;
            color: #888;
        }

        .footer-bottom {
            padding: 20px 0;
            border-top: 1px solid rgba(255,255,255,0.05);
        }

        .footer-bottom .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .footer-bottom p {
            font-size: 11px;
            color: #666;
        }

        .footer-bottom a {
            color: #666;
            font-size: 11px;
        }

        /* ===== RESPONSIVE ===== */
        @media (max-width: 1024px) {
            .main-nav {
                gap: 15px;
            }
            .main-nav a {
                font-size: 12px;
            }
            .about-grid {
                grid-template-columns: 1fr;
            }
            .about-cards {
                height: 240px;
            }
            .products-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .news-grid {
                grid-template-columns: 1fr;
            }
            .partners-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .footer-main .container {
                grid-template-columns: repeat(4, 1fr);
            }
        }

        @media (max-width: 768px) {
            .main-nav {
                display: none;
            }
            .hero-banner {
                height: 400px;
            }
            .hero-content h1 {
                font-size: 24px;
            }
            .hero-worker {
                display: none;
            }
            .about-stats {
                grid-template-columns: repeat(2, 1fr);
            }
            .products-grid {
                grid-template-columns: 1fr;
            }
            .partners-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-main .container {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        /* Scroll animation */
        .fade-in {
            opacity: 0;
            transform: translateY(30px);
            transition: all 0.6s ease;
        }

        .fade-in.visible {
            opacity: 1;
            transform: translateY(0);
        }
 /* ===== news ===== */
        .news-section {
			margin-top: 70px;
            padding: 0px 0;
            background: #fff;
            position: relative;
        }

        .news-header {
            display: flex;
            justify-content: space-between;
            align-items: flex-start;
            margin-bottom: 40px;
        }

        .news-nav {
            display: flex;
            gap: 40px;
            margin-top: 15px;
        }

        .news-nav a {
            font-size: 14px;
            color: #666;
            transition: color 0.3s;
            cursor: pointer;
        }

        .news-nav a.active {
            color: #0055a5;
            font-weight: bold;
        }

        .news-nav a:hover {
            color: #0055a5;
        }
        .news-nav a:hover {
          color: #fff;
	   background: var(--colour1);
	   border-color: var(--colour1);
        }
        .news-carousel {
            position: relative;
            display: flex;
            align-items: center;
        }
/* ========== 返回顶部按钮核心样式 ========== */
  #backToTop {
    /* 固定定位 */
    position: fixed;
    bottom: 50px;    /* 距离底部 */
    right: 30px;     /* 距离右侧 */
    z-index: 9999;   /* 保证在最上层 */
    
    /* 样式 */
    width: 50px;
    height: 50px;
    border-radius: 50%; /* 圆形 */
    background: #0459AB;  /* 背景色 */
    color: white;  /* 图标颜色 */
    border: none;
    font-size: 20px;
    cursor: pointer;
    box-shadow: 0 2px 10px rgba(0,0,0,0.2);
    
    /* 平滑显示隐藏 */
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
  }

  /* 鼠标悬浮效果 */
  #backToTop:hover {
    background: #007bff;
    transform: translateY(-3px);
  }

  /* 滚动后显示按钮 */
  #backToTop.show {
    opacity: 1;
    visibility: visible;
  }