:root {
            --primary-navy: #002d7a;
            --secondary-blue: #3b61a4;
            --accent-red: #cc0000;
            --text-dark: #1a1a1a;
            --text-muted: #555555;
            --bg-light: #f8f9fa;
        }

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

        body {
            font-family: 'Inter', 'Noto Sans SC', sans-serif;
            color: var(--text-dark);
            font-size: 1rem;
            line-height: 1.7;
            overflow-x: hidden;
        }

        h1, h2, h3, h4, h5, h6 {
            font-weight: 700;
            color: var(--primary-navy);
            line-height: 1.3;
        }

        /* ================= 顶部信息栏 ================= */
        .top-bar {
            background-color: #f8f9fa; 
            color: #555555;            
            border-bottom: 1px solid #eaeaea; 
            font-size: 0.85rem;
            padding: 10px 0;
        }
        .top-bar i { margin-right: 6px; color: var(--accent-red); }
        .top-bar a { color: #555555; text-decoration: none; transition: color 0.3s; }
        .top-bar a:hover { color: var(--primary-navy); }

        /* ================= 导航栏 ================= */
        .navbar {
            background-color: #fff;
            padding: 18px 0;
            box-shadow: 0 1px 4px rgba(0,0,0,0.06);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        .navbar-brand img { max-height: 60px; }
        
        .nav-link {
            color: #333 !important;
            font-weight: 500;
            font-size: 0.95rem;
            text-transform: uppercase;
            letter-spacing: 0.8px;
            padding: 10px 16px !important;
            position: relative;
            transition: color 0.3s;
        }
        .nav-link:hover { color: var(--primary-navy) !important; }
        .nav-link.active { color: var(--primary-navy) !important; font-weight: 700; }
        
        .nav-link::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 16px;
            width: 0%;
            height: 2px;
            background-color: var(--accent-red);
            opacity: 1;
            transition: all 0.3s ease-out;
        }
        .nav-link:hover::after, .nav-link.active::after { width: calc(100% - 32px); }

        .search-icon-btn { color: #333; text-decoration: none; font-size: 1.1rem; transition: color 0.3s; }
        .search-icon-btn:hover { color: var(--primary-navy); }

        .lang-switcher {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 0.9rem;
            color: #333;
            text-decoration: none;
            padding: 6px 12px;
            border: 1px solid #e0e0e0;
            border-radius: 4px;
            transition: all 0.3s;
        }
        .lang-switcher:hover, .lang-switcher:focus {
            border-color: var(--primary-navy);
            color: var(--primary-navy);
            background-color: #f8f9fa;
        }
        .lang-switcher img { width: 20px; height: 15px; object-fit: cover; }
        .dropdown-menu { min-width: 140px; border-radius: 4px; box-shadow: 0 4px 12px rgba(0,0,0,0.1); border: none; margin-top: 8px !important; }
        .dropdown-item { padding: 8px 16px; font-size: 0.9rem; display: flex; align-items: center; gap: 8px; transition: background-color 0.2s; }
        .dropdown-item:hover { background-color: #f0f4f8; color: var(--primary-navy); }
        .dropdown-item.active, .dropdown-item:active { background-color: #e8eef5; color: var(--primary-navy); }

        /* ================= Hero 首屏 ================= */
        .hero-section {
            position: relative;
            min-height: 600px;
            display: flex;
            align-items: center;
            background: linear-gradient(135deg, #e8eef5 0%, #dce6f0 50%, #c8d8e8 100%);
            overflow: hidden;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            top: 0; left: 0;
            width: 100%; height: 100%;
            background: url('../images/bg4.jpg') no-repeat center center;
            background-size: cover;
            opacity: 0.35;
            z-index: 0;
        }
        .hero-content { position: relative; z-index: 1; padding: 60px 0; }
        .hero-subtitle-top {
            color: var(--primary-navy);
            font-size: 0.95rem;
            font-weight: 600;
            letter-spacing: 2px;
            text-transform: uppercase;
            margin-bottom: 20px;
            display: block;
        }
        .hero-title { color: var(--primary-navy); font-size: 3.8rem; font-weight: 800; line-height: 1.15; margin-bottom: 25px; }
        .hero-red-line { width: 70px; height: 4px; background-color: var(--accent-red); margin-bottom: 30px; }
        .hero-subtitle { color: var(--text-dark); font-size: 1.15rem; line-height: 1.7; margin-bottom: 35px; max-width: 680px; font-weight: 400; }
        .btn-hero-primary { background-color: var(--primary-navy); color: #fff; padding: 14px 36px; font-size: 1rem; font-weight: 600; border: 2px solid var(--primary-navy); border-radius: 0; transition: all 0.3s; text-decoration: none; display: inline-block; }
        .btn-hero-primary:hover { background-color: transparent; color: var(--primary-navy); }
        .btn-hero-outline { background-color: transparent; color: var(--primary-navy); padding: 14px 36px; font-size: 1rem; font-weight: 600; border: 2px solid var(--primary-navy); border-radius: 0; transition: all 0.3s; text-decoration: none; display: inline-block; }
        .btn-hero-outline:hover { background-color: var(--primary-navy); color: #fff; }

        /* ================= About 区块 ================= */
        .about-section { padding: 100px 0; background-color: #fff; }
        .about-image-wrap img { width: 100%; height: auto; border-radius: 0; }
        .about-text { color: var(--text-muted); font-size: 1rem; line-height: 1.8; margin-bottom: 1.5rem; }

        /* ================= 数据统计 ================= */
        .stats-section { padding: 60px 0; background-color: var(--bg-light); }
        .stat-item { text-align: center; padding: 20px 10px; }
        .stat-number { font-size: 2.8rem; font-weight: 800; color: var(--primary-navy); line-height: 1.2; }
        .stat-label { font-size: 0.9rem; color: var(--text-muted); margin-top: 8px; font-weight: 500; text-transform: uppercase; letter-spacing: 1px; }


        



  /* ================= Services 区块 ================= */
        .services-section { padding: 100px 0; background-color: #F8F9FA; }
        .section-label { color: var(--primary-navy); font-size: 0.85rem; font-weight: 700; text-transform: uppercase; letter-spacing: 2.5px; margin-bottom: 15px; display: block; }
        .section-title { font-size: 2.4rem; font-weight: 700; margin-bottom: 20px; color: var(--primary-navy); }
        
        .service-card {
            background: #fff;
            border: 1px solid #E1E6EA; 
            border-top: 4px solid #E1E6EA;
            border-radius: 8px;
            padding: 30px 25px; 
            height: 100%;
            transition: all 0.3s ease;
            text-align: left;
            /*box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04); */
            display: flex;
            flex-direction: column;
        }
        
        .service-card:hover {
            box-shadow: 0 10px 30px rgba(0,0,0,0.08);
            transform: translateY(-5px);
        }
        
        .service-card i { font-size: 2.2rem; color: var(--primary-navy); margin-bottom: 16px; display: block; }
        .service-card h5 { 
            font-size: 1.05rem; 
            margin-bottom: 6px; 
            color: var(--primary-navy); 
            font-weight: 700;
            line-height: 1.4;
        }
        .service-card .service-title-cn {
            font-size: 0.95rem;
            color: var(--primary-navy);
            font-weight: 600;
            margin-bottom: 12px;
            display: block;
        }
        .service-card p { color: var(--text-muted); font-size: 0.92rem; margin-bottom: 0; line-height: 1.6; }
        
        .explore-more {
            display: inline-flex;
            align-items: center;
            justify-content: flex-start;
            margin-top: auto;
            padding-top: 18px; 
            color: var(--accent-red); 
            font-weight: 600;
            font-size: 0.95rem;
            text-decoration: none;
            transition: color 0.3s;
        }
        .explore-more i { margin-left: 8px; font-size: 1.05rem; line-height: 1; display: flex; align-items: center; transition: transform 0.3s; }
        .explore-more:hover { color: #a30000; }
        .explore-more:hover i { transform: translateX(5px); }













        /* ================= Global Network 区块 ================= */
        .network-section { padding: 100px 0; background-color: var(--bg-light); }
        .network-text { color: var(--text-muted); font-size: 1rem; line-height: 1.8; margin-bottom: 1.2rem; }












 /* ================= 新增：新闻与动态 区块 ================= */
        .news-section { padding: 80px 0; background-color: #fff; }
        .news-card {
            border: 1px solid #eaeaea;
            border-radius: 0;
            background: #fff;
            overflow: hidden;
            transition: all 0.3s ease;
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .news-card:hover {
            box-shadow: 0 10px 30px rgba(0,0,0,0.08);
            transform: translateY(-5px);
        }
        .news-card img {
            width: 100%;
            height: 220px;
            object-fit: cover;
        }
        .news-card .card-body {
            padding: 25px;
            display: flex;
            flex-direction: column;
            flex-grow: 1;
        }
        .news-card h5 {
            font-size: 1.1rem;
            font-weight: 700;
            color: #1a1a1a;
            margin-bottom: 15px;
            line-height: 1.4;
        }
        .news-card p {
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 20px;
            flex-grow: 1;
        }
        .btn-news-explore {
            display: inline-block;
            border: 1px solid #333;
            color: #333;
            padding: 6px 24px;
            font-size: 0.95rem;
            font-weight: 500;
            text-decoration: none;
            background: transparent;
            border-radius: 0;
            transition: all 0.3s;
            align-self: flex-start;
        }
        .btn-news-explore:hover {
            background-color: var(--primary-navy);
            border-color: var(--primary-navy);
            color: #fff;
        }
        .btn-news-more {
            background-color: var(--primary-navy);
            color: #fff;
            border: none;
            padding: 12px 40px;
            font-size: 1rem;
            font-weight: 600;
            border-radius: 0;
            transition: all 0.3s;
            text-decoration: none;
            display: inline-block;
        }
        .btn-news-more:hover {
            background-color: #002244;
            color: #fff;
        }









        /*新增选择我们区域*/

        .section-padding {
            padding: 80px 0;
        }

        /* Why Choose Us */
        .why-icon {
            font-size: 2rem;
            color: var(--primary-blue);
            margin-bottom: 15px;
        }
        .why-item h5 {
            font-size: 1.2rem;
            margin-bottom: 10px;
        }
        .why-item p {
            color: #666;
            font-size: 0.95rem;
        }





        /* ================= CTA 区块 ================= */
        .cta-section { padding: 60px 0 80px; background-color: #fff; } 
        .cta-box {
            background-color: var(--primary-navy); 
            color: #fff;
            padding: 60px 50px; 
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
        }
        .cta-box h2 { color: #fff; font-size: 2.2rem; margin-bottom: 15px; }
        .cta-box p { color: rgba(255,255,255,0.85); font-size: 1.05rem; margin-bottom: 0; }
        .btn-cta { background-color: #fff; color: var(--primary-navy); padding: 14px 40px; font-size: 1rem; font-weight: 700; border: 2px solid #fff; border-radius: 0; transition: all 0.3s; text-decoration: none; display: inline-block; }
        .btn-cta:hover { background-color: transparent; color: #fff; }

        /* ================= Footer ================= */
        .footer {
            background-color: #f8f9fa; 
            color: var(--text-muted);
            padding: 70px 0 0;
            font-size: 0.9rem;
        }
        .footer h5 { color: var(--primary-navy); font-size: 1rem; margin-bottom: 25px; font-weight: 700; }
        .footer ul { list-style: none; padding: 0; }
        .footer ul li { margin-bottom: 12px; }
        .footer ul li a { color: var(--text-muted); text-decoration: none; transition: color 0.3s; }
        .footer ul li a:hover { color: var(--primary-navy); }
        .footer-contact li { display: flex; align-items: flex-start; margin-bottom: 15px; color: var(--text-muted); }
        .footer-contact li i { margin-right: 12px; margin-top: 4px; color: var(--accent-red); }
        .footer-bottom {
            background-color: var(--primary-navy);
            color: #fff;
            padding: 25px 0;
            margin-top: 50px;
            font-size: 0.85rem;
        }
        .footer-bottom a { color: rgba(255,255,255,0.8); text-decoration: none; margin-left: 20px; transition: color 0.3s; }
        .footer-bottom a:hover { color: #fff; }

        /* ================= 响应式 ================= */
        @media (max-width: 991px) {
            .navbar-nav { margin-top: 15px; }
            .nav-link { padding: 10px 0 !important; }
            .nav-link::after { left: 0; width: 0%; }
            .nav-link:hover::after, .nav-link.active::after { width: 40px; }
            .hero-title { font-size: 2.6rem; }
            .hero-section { min-height: 480px; }
            .section-title { font-size: 1.9rem; }
            .stat-number { font-size: 2.2rem; }
            .cta-box { flex-direction: column; text-align: center; padding: 40px 20px; }
            .cta-box .col-lg-4 { text-align: center !important; margin-top: 20px; }
        }
        @media (max-width: 768px) {
            .hero-title { font-size: 2rem; }
            .hero-subtitle { font-size: 1rem; }
            .top-bar { font-size: 0.75rem; }
            .about-section, .services-section, .network-section { padding: 60px 0; }
        }




        /* ================= 搜索弹出层样式 ================= */
.search-modal-content {
    border: none;
    border-radius: 0; /* 保持全站直角风格 */
    box-shadow: 0 15px 50px rgba(0, 0, 0, 0.15);
    background-color: #fff;
    position: relative;
}

/* 模态框背景遮罩加深一点，增加层次感 */
.modal-backdrop.show {
    opacity: 0.7;
    background-color: #001a4d; /* 深蓝色遮罩 */
}

/* 关闭按钮 */
.search-modal-content .btn-close {
    position: absolute;
    top: 20px;
    right: 20px;
    font-size: 1.2rem;
    opacity: 0.5;
    transition: opacity 0.3s;
}
.search-modal-content .btn-close:hover {
    opacity: 1;
}

/* 搜索输入框 */
.search-input {
    border: 1px solid #ddd;
    border-right: none;
    border-radius: 0;
    padding: 15px 25px;
    font-size: 1.1rem;
    color: #333;
}
.search-input:focus {
    box-shadow: none;
    border-color: var(--primary-navy, #002d7a);
}

/* 搜索按钮 */
.search-btn {
    background-color: var(--primary-navy, #002d7a);
    border: 1px solid var(--primary-navy, #002d7a);
    border-radius: 0;
    padding: 0 30px;
    color: #fff;
    transition: all 0.3s;
}
.search-btn:hover {
    background-color: #001a4d;
    border-color: #001a4d;
    color: #fff;
}

/* 热门搜索链接 */
.popular-searches {
    font-size: 0.95rem;
}
.popular-searches a {
    color: #666;
    text-decoration: none;
    margin: 0 10px;
    transition: color 0.3s;
}
.popular-searches a:hover {
    color: var(--primary-navy, #002d7a);
    text-decoration: underline;
}



/*新增 关于我们部分样式？*/
/* ================= 承诺与愿景模块样式 ================= */
.promise-section {
    background-color: #fff;
    padding: 80px 0;
}

/* --- 左侧垂直选项卡样式 --- */
.promise-tabs {
    border: 1px solid #e0e0e0; /* 整体浅灰外框 */
}

.promise-tabs .nav-link {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 22px 25px;
    color: #555555;
    background-color: transparent;
    border: none;
    border-radius: 0;
    border-bottom: 1px solid #e0e0e0; /* 项底部分隔线 */
    font-weight: 600;
    font-size: 1.05rem;
    text-align: left;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: all 0.3s ease;
}

.promise-tabs .nav-link:last-child {
    border-bottom: none; /* 最后一个不要底部边框 */
}

.promise-tabs .nav-link i {
    font-size: 1.4rem;
    color: #999;
    transition: color 0.3s;
}

/* 鼠标悬停 */
.promise-tabs .nav-link:hover {
    color: var(--primary-navy, #002d7a);
    background-color: #f8f9fa;
}
.promise-tabs .nav-link:hover i {
    color: var(--primary-navy, #002d7a);
}

/* 激活（选中）状态 - 核心复刻截图效果 */
.promise-tabs .nav-link.active {
    background-color: #fff;
    color: var(--primary-navy, #002d7a);
    border-left: 4px solid var(--primary-navy, #002d7a); /* 左侧粗蓝线 */
    /* 移除顶部和底部的边框，让蓝线看起来像是从边框延伸出来的 */
    border-bottom: none; 
    border-top: 1px solid #e0e0e0; 
}
/* 修复第一个激活项的顶部边框 */
.promise-tabs .nav-link:first-child.active {
    border-top: none;
}

.promise-tabs .nav-link.active i {
    color: #3b82f6; /* 激活时图标变为亮蓝色 */
}

/* --- 右侧内容样式 --- */
.promise-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-navy, #002d7a);
    margin-bottom: 20px;
}

.promise-text {
    color: #555555;
    font-size: 1.05rem;
    line-height: 1.8;
    margin-bottom: 0;
    text-align: justify;
}

/* 右侧图片圆角与阴影 */
.promise-img {
    width: 100%;
    height: auto;
    border-radius: 8px; /* 保持整体的圆角风格 */
    box-shadow: 0 5px 20px rgba(0,0,0,0.08);
    object-fit: cover;
}

/* 响应式适配 (小屏幕下变为水平排列或堆叠) */
@media (max-width: 991px) {
    .promise-tabs {
        flex-direction: row !important; /* 手机端变成横向排列 */
        overflow-x: auto;
        margin-bottom: 30px;
    }
    .promise-tabs .nav-link {
        border-bottom: none;
        border-right: 1px solid #e0e0e0;
        white-space: nowrap;
        padding: 15px 20px;
        font-size: 0.95rem; 
        letter-spacing: 1.5px;
    }
    .promise-tabs .nav-link.active {
        border-left: none;
        border-bottom: 3px solid var(--primary-navy, #002d7a);
    }
    .promise-img {
        margin-top: 20px;
    }
}




/*新增加留言本*/
/* ================= 预约咨询模块样式 ================= */
.appointment-section {
    padding: 80px 0 100px;
    background-color: #fff;
}

/* 顶部徽章 */
.appointment-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 20px;
    border: 1px solid #f0c4c4; /* 浅红边框 */
    border-radius: 50px; /* 胶囊形 */
    color: var(--accent-red, #cc0000); /* 使用网站主红色 */
    font-weight: 600;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    background-color: #fff;
    margin-bottom: 20px;
}
.appointment-badge i {
    font-size: 1.1rem;
}

/* 标题 */
.appointment-title {
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary-navy, #002d7a); /* 使用主题深蓝色 */
    margin-bottom: 0;
    line-height: 1.2;
}

/* 表单控件样式 */
.appointment-form .form-control {
    border: 1px solid #e0e0e0; /* 默认浅灰边框 */
    border-radius: 8px; /* 保持和之前卡片一样的圆角 */
    padding: 16px 20px;
    font-size: 1rem;
    color: #333;
    background-color: #fff;
    box-shadow: none; /* 去除默认阴影 */
    transition: border-color 0.3s;
}

/* 输入框占位符颜色 */
.appointment-form .form-control::placeholder {
    color: #999;
}

/* 输入框聚焦状态：边框变深蓝 */
.appointment-form .form-control:focus {
    border-color: var(--primary-navy, #002d7a);
    box-shadow: none;
}

/* 提交按钮 */
.btn-submit {
    background-color: var(--accent-red, #cc0000); /* 使用主题红色 */
    color: #fff;
    border: none;
    border-radius: 50px; /* 胶囊形按钮 */
    padding: 16px 50px;
    font-size: 1rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: all 0.3s ease;
}

.btn-submit:hover {
    background-color: #a30000; /* 悬停时颜色加深 */
    transform: translateY(-2px); /* 轻微上浮 */
    color: #fff;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .appointment-title {
        font-size: 2.2rem;
    }
    .appointment-section {
        padding: 50px 0 60px;
    }
}