/* 全局样式 */
        body {
            font-family: "Microsoft YaHei", sans-serif;
            color: #333;
            background-color: #f8f9fa;
            margin: 0;
            padding: 0;
        }
        a {
            text-decoration: none;
            color: inherit;
        }
        .section-title {
            position: relative;
            margin-bottom: 30px;
            padding-bottom: 15px;
            font-weight: 700;
        }
        .section-title::after {
            content: "";
            position: absolute;
            left: 50%;
            bottom: 0;
            transform: translateX(-50%);
            width: 80px;
            height: 3px;
            background-color: #d93600; /* 辣椒红 */
        }
        .join-us-section .section-title::before {
            font-family: "bootstrap-icons";
            position: absolute;
            left: 50%;
            top: -25px;
            transform: translateX(-50%);
            font-size: 2rem;
            color: #d93600;
            text-shadow: 0 2px 4px rgba(217, 54, 0, 0.3);
        }
        .card-hover {
            transition: all 0.3s ease;
            border: none;
        }
        .card-hover:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0,0,0,0.1);
        }
        .tech-table {
            font-size: 0.9rem;
            width: 100%;
        }
        .tech-table th {
            background-color: #1e3932;
            color: #fff;
            text-align: center;
            padding: 12px 8px;
        }
        .tech-table td {
            vertical-align: middle;
            padding: 10px 8px;
        }

        /* 头部导航 */
        .header-top {
            background: linear-gradient(135deg, #1a402e 0%, #1e3932 100%);
            color: #fff;
            padding: 10px 0;
            font-size: 14px;
        }
        .navbar-main {
            background: linear-gradient(135deg, #1e3932 0%, #163026 100%);
            box-shadow: 0 2px 10px rgba(0,0,0,0.2);
            z-index: 999;
            padding: 0;
        }
        .navbar-main .nav-link {
            color: #fff !important;
            padding: 15px 20px !important;
            position: relative;
        }
        .navbar-main .nav-link::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 2px;
            background-color: #ff6b35;
            transition: width 0.3s ease;
        }
        .navbar-main .nav-link:hover::after,
        .navbar-main .nav-link.active::after {
            width: 80%;
        }
        .navbar-toggler {
            border-color: rgba(255,255,255,0.5);
        }
        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%28255, 255, 255, 0.8%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }

        /* 轮播图 */
        .carousel-item {
            height: 500px;
        }
        @media (max-width: 768px) {
            .carousel-item {
                height: 300px;
            }
        }
        .carousel-item img {
            object-fit: cover;
            height: 100%;
            filter: brightness(0.85);
        }
        .carousel-caption {
            bottom: 50%;
            transform: translateY(50%);
            text-shadow: 0 2px 10px rgba(0,0,0,0.5);
            width: 90%;
            margin: 0 auto;
        }
        .carousel-caption h1 {
            font-size: 2.5rem;
            font-weight: bold;
        }
        @media (max-width: 768px) {
            .carousel-caption h1 {
                font-size: 1.5rem;
            }
            .carousel-caption p {
                font-size: 0.9rem;
            }
        }

        /* 核心板块 */
        .intro-section, .enterprise-section, 
        .tech-section, .supply-demand-section, 
        .case-section, .news-section {
            padding: 60px 15px;
            margin: 0 auto;
            max-width: 1200px;
        }
        .intro-section {
            background-color: #fff;
        }
        .enterprise-section {
            background-color: #f5f5f5;
        }
        .tech-section {
            background-color: #fff;
        }
        .supply-demand-section {
            background-color: #f5f5f5;
        }
        .case-section {
            background-color: #fff;
        }
        /* 新增行业资讯板块样式 */
        .news-section {
            background-color: #f5f5f5;
        }
        .news-card {
            height: 100%;
            border-radius: 8px;
            overflow: hidden;
            border: 1px solid rgba(217, 54, 0, 0.1);
        }
        .news-img {
            height: 180px;
            object-fit: cover;
            width: 100%;
            transition: transform 0.3s ease;
        }
        .news-card:hover .news-img {
            transform: scale(1.05);
        }
        .news-card-body {
            padding: 20px;
        }
        .news-tag {
            display: inline-block;
            padding: 3px 10px;
            background-color: rgba(217, 54, 0, 0.1);
            color: #d93600;
            font-size: 0.8rem;
            border-radius: 20px;
            margin-bottom: 10px;
        }
        .news-title {
            font-size: 1.1rem;
            font-weight: 600;
            color: #1e3932;
            margin-bottom: 10px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-desc {
            color: #666;
            font-size: 0.9rem;
            line-height: 1.5;
            margin-bottom: 15px;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.8rem;
            color: #999;
        }
        .news-meta i {
            color: #d93600;
            margin-right: 5px;
        }
        .supply-card, .demand-card {
            border-radius: 8px;
            overflow: hidden;
            border: none;
        }
        .supply-demand-img {
            height: 200px;
            object-fit: cover;
            width: 100%;
        }

        /* 加入我们板块样式 */
        .join-us-section {
            padding: 100px 15px;
            background: linear-gradient(135deg, #f8f9fa 0%, #f0f4f2 100%);
            position: relative;
            overflow: hidden;
            max-width: 100%;
            margin: 0 auto;
        }
        .join-us-section::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-image: 
                radial-gradient(circle at 20% 30%, rgba(217, 54, 0, 0.05) 0%, transparent 40%),
                radial-gradient(circle at 80% 70%, rgba(30, 57, 50, 0.05) 0%, transparent 40%);
            z-index: 0;
        }
        .join-us-container {
            position: relative;
            z-index: 1;
            max-width: 1200px;
            margin: 0 auto;
        }
        .join-us-title-wrap {
            text-align: center;
            margin-bottom: 60px;
        }
        .join-us-title-wrap h2 {
            font-size: 2.5rem;
            font-weight: 700;
            color: #1e3932;
            margin-bottom: 15px;
        }
        .join-us-title-wrap p {
            font-size: 1.1rem;
            color: #666;
            max-width: 700px;
            margin: 0 auto;
        }
        .join-us-cards {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
            margin-bottom: 60px;
        }
        .join-us-card-item {
            background: #fff;
            border-radius: 12px;
            padding: 40px 30px;
            position: relative;
            overflow: hidden;
            transform: perspective(1000px) rotateX(0deg) rotateY(0deg);
            transition: all 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
            box-shadow: 
                0 8px 16px rgba(0,0,0,0.08),
                0 4px 8px rgba(217, 54, 0, 0.05),
                0 -2px 4px rgba(30, 57, 50, 0.03);
            border: 1px solid rgba(255, 255, 255, 0.8);
        }
        .join-us-card-item::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background: linear-gradient(90deg, #d93600 0%, #ff6b35 100%);
        }
        .join-us-card-item:hover {
            transform: perspective(1000px) rotateX(2deg) rotateY(-2deg) translateY(-10px);
            box-shadow: 
                0 20px 32px rgba(0,0,0,0.12),
                0 8px 16px rgba(217, 54, 0, 0.1),
                0 -4px 8px rgba(30, 57, 50, 0.05);
        }
        .join-us-card-icon {
            width: 80px;
            height: 80px;
            background: linear-gradient(135deg, rgba(217, 54, 0, 0.1) 0%, rgba(255, 107, 53, 0.1) 100%);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 25px;
            box-shadow: inset 0 2px 4px rgba(255, 255, 255, 0.8),
                        0 4px 8px rgba(217, 54, 0, 0.1);
        }
        .join-us-card-icon i {
            font-size: 2.5rem;
            color: #d93600;
            transition: all 0.3s ease;
        }
        .join-us-card-item:hover .join-us-card-icon i {
            transform: scale(1.1);
            color: #ff6b35;
        }
        .join-us-card-item h4 {
            font-size: 1.4rem;
            font-weight: 600;
            color: #1e3932;
            margin-bottom: 15px;
            position: relative;
            padding-bottom: 10px;
        }
        .join-us-card-item h4::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            width: 50px;
            height: 2px;
            background: #d93600;
        }
        .join-us-card-item p {
            color: #666;
            line-height: 1.6;
            font-size: 1rem;
        }
        .join-us-btn-wrap {
            text-align: center;
        }
        .join-us-btn {
            padding: 15px 45px;
            font-size: 1.2rem;
            font-weight: 600;
            color: #fff;
            background: linear-gradient(135deg, #d93600 0%, #ff6b35 100%);
            border: none;
            border-radius: 50px;
            cursor: pointer;
            box-shadow: 
                0 8px 16px rgba(217, 54, 0, 0.3),
                inset 0 2px 4px rgba(255, 255, 255, 0.2),
                inset 0 -2px 4px rgba(0, 0, 0, 0.1);
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }
        .join-us-btn:hover {
            transform: translateY(-3px);
            box-shadow: 
                0 12px 20px rgba(217, 54, 0, 0.4),
                inset 0 2px 4px rgba(255, 255, 255, 0.3),
                inset 0 -2px 4px rgba(0, 0, 0, 0.15);
            background: linear-gradient(135deg, #c82e00 0%, #ff5a20 100%);
        }
        .join-us-btn::after {
            content: "";
            position: absolute;
            top: 50%;
            left: 50%;
            width: 0;
            height: 0;
            background: rgba(255, 255, 255, 0.2);
            border-radius: 50%;
            transform: translate(-50%, -50%);
            transition: width 0.6s ease, height 0.6s ease;
        }
        .join-us-btn:active::after {
            width: 300px;
            height: 300px;
            opacity: 0;
        }

        /* 页脚样式 */
        .footer {
            background: linear-gradient(135deg, #163026 0%, #1a402e 100%);
            color: #fff;
            padding: 60px 15px 20px;
            margin-top: 0;
        }
        .footer .container {
            max-width: 1200px;
            margin: 0 auto;
        }
        .footer h5 {
            color: #ff6b35;
            margin-bottom: 20px;
            font-weight: bold;
        }
        .footer-links {
            list-style: none;
            padding: 0;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .footer-links a {
            color: #ccc;
            transition: color 0.3s ease;
        }
        .footer-links a:hover {
            color: #ff6b35;
            padding-left: 5px;
        }
        .footer-contact i {
            width: 30px;
            color: #ff6b35;
        }
        .copyright {
            text-align: center;
            padding-top: 30px;
            margin-top: 30px;
            border-top: 1px solid rgba(255,255,255,0.1);
            font-size: 14px;
            color: #ccc;
        }

        /* 响应式适配 */
        @media (max-width: 992px) {
            .navbar-main .nav-link {
                padding: 10px 15px !important;
            }
            .join-us-cards {
                gap: 25px;
            }
        }
        @media (max-width: 768px) {
            .join-us-title-wrap h2 {
                font-size: 2rem;
            }
            .join-us-cards {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .join-us-card-item {
                padding: 30px 20px;
            }
            .join-us-card-icon {
                width: 60px;
                height: 60px;
            }
            .join-us-card-icon i {
                font-size: 2rem;
            }
            .join-us-btn {
                padding: 12px 35px;
                font-size: 1.1rem;
            }
            .join-us-section {
                padding: 80px 15px;
            }
            .tech-table {
                font-size: 0.8rem;
            }
            /* 表格横向滚动适配 */
            .table-responsive {
                overflow-x: auto;
                -webkit-overflow-scrolling: touch;
            }
            /* 案例卡片适配 */
            .case-section .card {
                flex-direction: column !important;
            }
            .case-section .card-img-left {
                width: 100% !important;
                height: 200px;
            }
            /* 新闻卡片适配 */
            .news-img {
                height: 150px;
            }
        }
        @media (max-width: 576px) {
            .header-top {
                font-size: 12px;
                text-align: center;
            }
            .header-top .col-md-6 {
                margin-bottom: 5px;
            }
            .carousel-caption h1 {
                font-size: 1.2rem;
            }
            .section-title {
                font-size: 1.8rem;
            }
            .join-us-title-wrap h2 {
                font-size: 1.8rem;
            }
            .join-us-card-item h4 {
                font-size: 1.2rem;
            }
            .intro-section, .enterprise-section, 
            .tech-section, .supply-demand-section, 
            .case-section, .news-section {
                padding: 40px 15px;
            }
            .news-img {
                height: 120px;
            }
        }