/* 基础样式 - 全局统一 */
        :root {
            --primary-color: #4facfe;
            --secondary-color: #00f2fe;
            --bg-dark-1: #1a1a2e;
            --bg-dark-2: #16213e;
            --card-bg: rgba(255, 255, 255, 0.1);
            --border-color: rgba(255, 255, 255, 0.2);
            --text-light: #fff;
            --text-primary: #4facfe;
            --shadow-primary: 0 0 15px rgba(79, 172, 254, 0.5);
        }

        body {
            background: linear-gradient(135deg, var(--bg-dark-1) 0%, var(--bg-dark-2) 100%);
            min-height: 100vh;
            color: var(--text-light);
            font-family: 'Microsoft YaHei', 'Heiti SC', sans-serif;
            padding-top: 70px;
            /* 调整：为导航栏+联系方式栏预留空间 */
            padding-bottom: 80px;
            /* 为页脚预留空间 */
        }

        /* 导航栏切换图标样式 */
        .navbar-toggler-icon {
            display: inline-block;
            width: 24px;
            height: 2px;
            background-color: #fff !important;
            position: relative;
            transition: all 0.3s ease;
            margin-top: 10px; /* 调整垂直位置 */
        }
        
        .navbar-toggler-icon::before,
        .navbar-toggler-icon::after {
            content: '';
            position: absolute;
            width: 24px;
            height: 2px;
            background-color: #fff !important;
            left: 0;
            transition: all 0.3s ease;
        }
        
        .navbar-toggler-icon::before {
            top: -8px;
        }
        
        .navbar-toggler-icon::after {
            top: 8px;
        }
        
        .navbar-open .navbar-toggler-icon {
            background-color: transparent !important;
        }
        
        .navbar-open .navbar-toggler-icon::before {
            transform: rotate(45deg);
            top: 0;
        }
        
        .navbar-open .navbar-toggler-icon::after {
            transform: rotate(-45deg);
            top: 0;
        }
        
        /* 确保Bootstrap不会覆盖我们的样式 */
        .navbar-toggler {
            border: none;
            padding: 0.75rem 1rem; /* 增加padding，扩大点击区域 */
            z-index: 10000; /* 确保在最顶层 */
            position: relative;
            background: transparent;
        }
        
        .navbar-toggler:focus {
            outline: none;
            box-shadow: none;
        }
        
        /* 导航栏样式 */
        .navbar-custom {
            background: rgba(22, 33, 62, 0.95);
            backdrop-filter: blur(8px);
            border-bottom: 1px solid var(--border-color);
            box-shadow: 0 2px 15px rgba(0, 0, 0, 0.2);
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 9999;
        }

        .navbar-custom .navbar-brand {
            color: var(--secondary-color);
            font-size: 1.4rem;
            font-weight: bold;
            text-shadow: 0 0 8px rgba(0, 242, 254, 0.4);
        }

        .navbar-custom .nav-link {
            color: var(--text-primary);
            font-size: 1rem;
            margin: 0 8px;
            transition: all 0.3s ease;
        }

        .navbar-custom .nav-link:hover {
            color: var(--secondary-color);
            transform: translateY(-2px);
        }

        /* 新增：导航栏下方的联系方式栏 - 居中显示 */
        .contact-bar {
            /*background: rgba(22, 33, 62, 0.9);
            backdrop-filter: blur(8px);
            border-bottom: 1px solid var(--border-color);
            color: var(--text-primary);
            font-size: .95rem;*/
            padding: 10px 0;
            text-align: center;
            position: static;
            top: -28px;
            /* 与导航栏高度匹配，紧贴导航栏下方 */
            left: 0;
            right: 0;
            z-index: 9998;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
        }

        .contact-container {
            max-width: 100%;
            padding: 0 8px;
            /* 关键：添加左右内边距，防止内容贴边 */
            margin: 0 auto;
        }

        .contact-item {
            padding: 2px 0;
            white-space: nowrap;
            /* 防止号码被截断 */
            overflow: hidden;
            text-overflow: ellipsis;
            /* 极端情况显示省略号 */
        }

        /* 主容器样式 */
        .main-container {
            max-width: 1200px;
            width: 100%;
            margin: 0 auto;
            padding: 20px;
        }

        /* 卡片样式 */
        .custom-card {
            background: var(--card-bg);
            backdrop-filter: blur(10px);
            border: 1px solid var(--border-color);
            border-radius: 20px;
            box-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.37);
            padding: 2.5rem;
            margin-bottom: 3rem;
        }

        .card-title {
            color: var(--secondary-color);
            font-size: 2.2rem;
            font-weight: bold;
            text-shadow: 0 0 10px rgba(0, 242, 254, 0.5);
            margin-bottom: 1.5rem;
            text-align: center;
        }

        /* 表单样式 */
        .form-label {
            color: var(--text-primary);
            font-size: 1.1rem;
            margin-bottom: 0.8rem;
        }

        .form-control {
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid var(--border-color);
            border-radius: 10px;
            color: var(--text-light);
            padding: 1rem;
            transition: all 0.3s ease;
            font-size: 1rem;
            margin-bottom: 1.2rem;
        }

        .form-control:focus {
            background: rgba(255, 255, 255, 0.15);
            border-color: var(--primary-color);
            box-shadow: var(--shadow-primary);
            color: var(--text-light);
        }

        /* 按钮样式 */
        .btn-primary {
            background: linear-gradient(45deg, var(--primary-color) 0%, var(--secondary-color) 100%);
            border: none;
            border-radius: 10px;
            padding: 0.8rem 2.5rem;
            font-size: 1.1rem;
            font-weight: bold;
            transition: all 0.3s ease;
            color: var(--bg-dark-2);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(79, 172, 254, 0.4);
            color: var(--bg-dark-2);
        }

        .btn-key-request {
            background: linear-gradient(45deg, #ff6b6b, #ee5a52);
            border: none;
            border-radius: 10px;
            padding: 0.8rem 2.5rem;
            font-size: 1.1rem;
            font-weight: bold;
            transition: all 0.3s ease;
            color: var(--text-light);
            margin: 1.5rem auto;
            display: block;
        }

        .btn-key-request:hover {
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(255, 107, 107, 0.4);
            color: var(--text-light);
        }

        .btn-outline-light {
            border: 1px solid var(--border-color);
            color: var(--text-light);
            transition: all 0.3s ease;
            border-radius: 8px;
            padding: 0.5rem 1rem;
        }

        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.1);
            color: var(--text-light);
            transform: translateY(-2px);
        }

        /* 加载状态样式 */
        .loading {
            display: none;
            text-align: center;
            margin: 30px 0;
        }

        .spinner-border {
            color: var(--primary-color);
            width: 3rem;
            height: 3rem;
        }

        .loading p {
            font-size: 1rem;
            margin-top: 1rem;
        }

        /* 提示框样式 */
        .suggestions {
            margin-top: 15px;
            padding: 15px;
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: 10px;
            display: none;
            color: var(--text-primary);
            font-size: 1rem;
        }

        .tip-bubble {
            display: none;
            /*position: absolute;*/
            left: 0;
            top: 120%;
            z-index: 1000;
            background: rgba(34, 43, 69, 0.97);
            color: var(--text-light);
            border-radius: 12px;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.18);
            padding: 15px 20px;
            min-width: 300px;
            max-width: 500px;
            font-size: 0.95rem;
            line-height: 1.6;
            border: 1px solid var(--primary-color);
            white-space: pre-line;
        }

        /* 装饰元素样式 */
        .tech-lines {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            pointer-events: none;
            z-index: -1;
        }

        .tech-line {
            position: absolute;
            background: linear-gradient(90deg, transparent, rgba(79, 172, 254, 0.2), transparent);
            height: 1px;
            width: 100%;
            animation: moveLine 8s linear infinite;
        }

        @keyframes moveLine {
            0% {
                transform: translateY(-100%);
            }

            100% {
                transform: translateY(100vh);
            }
        }

        .glow {
            position: fixed;
            width: 150px;
            height: 150px;
            background: radial-gradient(circle, rgba(79, 172, 254, 0.2) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
            z-index: -1;
        }

        /* 案例展示区样式 */
        .cases-section {
            margin-top: 3rem;
        }

        .cases-title {
            color: var(--text-primary);
            font-size: 1.8rem;
            font-weight: bold;
            text-align: center;
            margin-bottom: 2rem;
        }

        .cases-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 1.5rem;
        }

        .case-item {
            border: 1px solid var(--border-color);
            border-radius: 12px;
            overflow: hidden;
            transition: all 0.3s ease;
            background: var(--card-bg);
        }

        .case-item:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-primary);
        }

        .case-img {
            width: 100%;
            object-fit: cover;
            border-bottom: 1px solid var(--border-color);
        }

        .case-desc {
            padding: 15px;
            font-size: 0.95rem;
            text-align: center;
            color: var(--text-light);
        }

        /* 弹窗样式 */
        .modal-content {
            background: var(--bg-dark-2);
            color: var(--text-primary);
            border: 1px solid var(--border-color);
            border-radius: 15px;
        }

        .modal-header {
            border-bottom: 1px solid var(--border-color);
        }

        .modal-title {
            color: var(--secondary-color);
            font-weight: bold;
        }

        .qrcode-container {
            display: flex;
            justify-content: center;
            gap: 2rem;
           /* margin: 2rem 0;*/
        }

        .qrcode-item {
            text-align: center;
        }

        .qrcode-img {
            width: 180px;
            height: 180px;
            border: 2px solid var(--primary-color);
            border-radius: 8px;
            padding: 2px;
            background: #fff;
        }

        .qrcode-desc {
            margin-top: 10px;
            font-size: 1rem;
            color: var(--text-light);
        }

        .contact-info-list {
            list-style: none;
            padding: 0;
            margin: 1.5rem 0;
        }

        .contact-info-list li {
            margin: 12px 0;
            /*font-size: 1.05rem;*/
            display: flex;
            align-items: center;
        }

        .contact-info-list li span {
            color: var(--secondary-color);
            /*min-width: 100px;*/
        }

        /* 页脚样式 */
        .footer {
            background: rgba(22, 33, 62, 0.95);
            backdrop-filter: blur(8px);
            border-top: 1px solid var(--border-color);
            /*padding: 1.5rem 0;*/
            text-align: center;
            color: var(--text-primary);
            /*position: fixed;*/
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 9998;
        }

        .footer p {
            margin: 0;
            font-size: 0.95rem;
        }

        /* Toast提示样式 */
        .global-toast {
            position: fixed;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            z-index: 11000;
            min-width: 300px;
            max-width: 90vw;
        }

        .toast-body {
            width: 100%;
            text-align: center;
            font-weight: bold;
        }

        /* PC端样式 (屏幕宽度 >= 992px) */
        @media (min-width: 992px) {
            .contact-container {
                display: flex;
                justify-content: center;
                align-items: center;
            }

            .cases-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .custom-card {
                padding: 3rem;
            }

            .card-title {
                font-size: 1.9rem;
            }

            .contact-item {
                margin: 0 12px;
                position: relative;
                padding: 0;
            }
        }

        /* 移动端样式 (屏幕宽度 < 992px) */
        @media (max-width: 991px) {
            body {
                padding-top: 70px;
                /* 调整：适配移动端导航栏+联系方式栏高度 */
            }

            .navbar-custom .navbar-collapse {
                margin-top: 10px;
            }

            .contact-bar {
                display: flex;
                justify-content: center;
                align-items: center;
            }

            .contact-item {
                display: inline-block;
                padding: 0;
                margin: 0 12px;
                position: relative;
            }

            .contact-item:not(:last-child)::after {
                content: "|";
                position: absolute;
                right: -14px;
                color: rgba(79, 172, 254, 0.5);
            }

            .custom-card {
                padding: 1.5rem;
            }

            .card-title {
                font-size: 1.2rem;
            }

            .qrcode-container {
                flex-direction: column;
                align-items: center;
                /*gap: 1.5rem;*/
            }

            .qrcode-img {
                /*width: 140px;*/
                height: 1 40px;
            }

            .btn-primary,
            .btn-key-request {
                width: 100%;
                padding: 0.8rem 1rem;
                font-size: 1rem;
            }

            .cases-grid {
                grid-template-columns: repeat(2, 1fr);
            }


            .footer p {
                font-size: 0.85rem;
            }
        }

        /* 小屏移动端样式 (屏幕宽度 < 576px) */
        @media (max-width: 575px) {
            .cases-grid {
                grid-template-columns: 1fr;
            }

            .contact-bar {
                font-size: 0.85rem;
                /* 进一步缩小字体 */
                top: 8px;
                padding: 4px 0;
                /* 减少上下 padding */
            }

            .tip-bubble {
                min-width: 250px;
                max-width: 90vw;
            }

            .contact-container {
                padding: 0 5px;
                /* 更小的内边距 */
            }

            .contact-item {
                padding: 1px 0;
            }

            .navbar-custom .navbar-brand {
                font-size: 1.2rem;
            }

            .contact-info-list li {
                flex-direction: column;
                align-items: flex-start;
            }

            .contact-info-list li span {
                min-width: auto;
                margin-bottom: 5px;
            }
        }