/* ==============================
   1. 全局重置与基础样式（所有页面通用）
============================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html, body {
    width: 100%;
    font-family: "Microsoft YaHei", Arial, sans-serif;
    font-size: 14px;
    line-height: 1.6;
    color: #333;
    background-color: #fff;
}

a {
    text-decoration: none;
    color: #333;
    transition: color 0.3s ease;
}

    a:hover {
        color: #0066cc;
    }

ul, ol {
    list-style: none;
}

img {
    border: none;
    vertical-align: middle;
    max-width: 100%;
    display: block;
}

button, input, textarea, select {
    font-family: inherit;
    outline: none;
    border: 1px solid #ccc;
}

table {
    border-collapse: collapse;
    width: 100%;
}

/* ==============================
   2. 公共容器与通用布局
============================== */
.container {
    width: 1200px;
    margin: 0 auto;
}

/* 通用区块 */
.section {
    padding: 60px 0;
}

.section-title {
    font-size: 28px;
    text-align: center;
    margin-bottom: 40px;
    color: #222;
}

/* 左右图文行 */
.row {
    display: flex;
    align-items: center;
    gap: 60px;
    margin-bottom: 60px;
}

.row-reverse {
    flex-direction: row-reverse;
}

.row-text {
    flex: 1;
}

    .row-text h3 {
        font-size: 22px;
        margin-bottom: 15px;
        color: #0066cc;
    }

    .row-text p {
        font-size: 15px;
        color: #555;
        margin-bottom: 20px;
        line-height: 1.8;
    }

.row-img {
    flex: 1;
}

    .row-img img {
        width: 100%;
        border-radius: 8px;
    }

/* 卡片列表 */
.card-list {
    display: flex;
    justify-content: space-between;
    gap: 25px;
    flex-wrap: wrap;
}

.service-card {
    width: calc(25% - 20px);
    border: 1px solid #eee;
    border-radius: 8px;
    overflow: hidden;
    text-align: center;
    padding-bottom: 25px;
}

    .service-card img {
        width: 100%;
        height: 180px;
        object-fit: cover;
    }

    .service-card h4 {
        font-size: 16px;
        margin: 15px 0 10px;
    }

    .service-card p {
        padding: 0 15px;
        font-size: 14px;
        color: #666;
        margin-bottom: 15px;
    }

/* 通用按钮 */
.normal-btn {
    display: inline-block;
    padding: 10px 25px;
    background: #0066cc;
    color: #fff;
    border-radius: 4px;
    transition: background 0.3s;
}

    .normal-btn:hover {
        background: #0052a3;
    }

/* ==============================
   3. 头部导航（所有页面一致）
============================== */
.header {
    height: 80px;
    line-height: 80px;
    border-bottom: 1px solid #eee;
    background: #fff;
    position: sticky;
    top: 0;
    z-index: 999;
}

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

.logo {
    font-size: 22px;
    font-weight: bold;
    color: #0066cc;
}

.nav-list {
    display: flex;
    gap: 10px;
}

.nav-item {
    position: relative;
}

    .nav-item > a {
        font-size: 17px;
        background: #fff;
        padding: 8px 10px;
        border-radius: 5px;
        color: #333;
    }

.nav_current {
    background: #eee !important;
    font-weight: 700;
}

.nav-dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    background: #fff;
    border: 1px solid #eee;
    border-radius: 4px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    display: none;
}

.nav-item:hover .nav-dropdown {
    display: block;
}

.dropdown-item {
    display: block;
    padding: 10px 20px;
    white-space: nowrap;
    font-size: 14px;
    line-height: 1.5;
}

.header-btn {
    gap: 15px;
}

    .header-btn a {
        font-size: 15px;
        padding: 8px 15px;
        border: 1px solid #0066cc;
        border-radius: 5px;
    }

        .header-btn a:first-child {
            background: #0066cc;
            color: #fff;
        }

/* ==============================
   4. 页面Banner（所有页面通用）
============================== */
.page-banner {
    width: 100%;
    height: 300px;
    color: #fff;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}
    /* 半透明遮罩，让文字更清晰 */
    .page-banner::after {
        content: '';
        position: absolute;
        inset: 0;
        z-index: 1;
    }

    .page-banner .container {
        position: relative;
        z-index: 2;
        width: 90%;
        max-width: 1400px;
        margin: 0 auto;
    }

.banner-text {
    max-width: 600px;
}

    .banner-text h1 {
        font-size: 36px;
        margin-bottom: 15px;
    }

    .banner-text p {
        font-size: 16px;
        line-height: 1.8;
        opacity: 0.9;
    }

/* ==============================
   5. 页脚（所有页面一致）
============================== */
.footer {
    padding: 40px 0;
    background: #222;
    color: #999;
    margin-top: 50px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    margin-bottom: 30px;
}

.footer-col h4 {
    font-size: 16px;
    color: #fff;
    margin-bottom: 15px;
}

.footer-col p {
    margin-bottom: 8px;
}

.footer-col a {
    color: #999;
}

    .footer-col a:hover {
        color: #0099ff;
    }

.footer-bottom {
    text-align: center;
    border-top: 1px solid #333;
    padding-top: 20px;
    font-size: 12px;
}

/* 清除浮动 */
.clearfix::after {
    content: "";
    display: block;
    clear: both;
}

.highlight {
    color: #ff6a00;
}


/********************************验证码**********************************/
/* 遮罩层 */
.mask {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    display: none;
    z-index: 9999;
}
/* 验证弹窗 */
.verify-box {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%,-50%);
    width: 380px;
    background: #fff;
    padding: 30px;
    border-radius: 8px;
}

.title {
    font-size: 16px;
    margin-bottom: 20px;
    color: #333;
}
/* 文字容器 */
.word-wrap {
    display: flex;
    gap: 15px;
    margin: 25px 0;
    justify-content: center;
}

.word-item {
    width: 65px;
    height: 65px;
    line-height: 65px;
    text-align: center;
    font-size: 26px;
    border: 1px solid #ccc;
    border-radius: 6px;
    cursor: pointer;
    user-select: none;
}

    .word-item.active {
        background: #f44336;
        color: #fff;
        border-color: #f44336;
    }

.btns {
    margin-top: 20px;
    display: flex;
    gap: 10px;
    justify-content: flex-end;
}

button {
    padding: 7px 18px;
    border: none;
    border-radius: 4px;
    background: #409eff;
    color: #fff;
    cursor: pointer;
}

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

        body {
            font-family: "Microsoft YaHei",sans-serif;
            background: #F5F7FA;
            color: #333;
            line-height: 1.7;
        }

        a {
            text-decoration: none;
            color: inherit;
        }

        ul {
            list-style: none;
        }

        .container {
            width: 1400px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 80px;
            background: #fff;
            box-shadow: 0 2px 10px rgba(0,0,0,0.08);
            z-index: 999;
        }

        .header-inner {
            height: 100%;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .logo {
            font-size: 24px;
            font-weight: 700;
            color: #0F4C81;
        }

        .nav-list {
            display: flex;
            gap: 36px;
        }

        .nav-item {
            height: 80px;
            line-height: 80px;
        }

            .nav-item a {
                font-size: 16px;
                font-weight: 500;
                color: #2C3E50;
            }

                .nav-item a:hover {
                    color: #0F4C81;
                }

        .page-banner {
            margin-top: 80px;
            width: 100%;
            height: 320px;
            background: linear-gradient(rgba(15,76,129,0.78),rgba(15,76,129,0.78)), url(https://images.pexels.com/photos/115044/pexels-photo-115044.jpeg) center/cover no-repeat;
            display: flex;
            align-items: center;
            color: #fff;
        }

        .banner-text h1 {
            font-size: 40px;
            margin-bottom: 16px;
        }

        .banner-text p {
            font-size: 18px;
            max-width: 700px;
        }

        .section {
            padding: 70px 0;
        }

        .section-title {
            text-align: center;
            font-size: 34px;
            color: #0F4C81;
            margin-bottom: 50px;
        }

        .help-list {
            max-width: 900px;
            margin: 0 auto;
        }

        .help-item {
            background: #fff;
            padding: 24px 30px;
            border-radius: 8px;
            margin-bottom: 16px;
            box-shadow: 0 2px 8px rgba(0,0,0,0.04);
        }

            .help-item h3 {
                font-size: 18px;
                color: #0F4C81;
                margin-bottom: 10px;
            }

            .help-item p {
                font-size: 15px;
                color: #596A7C;
                line-height: 1.8;
            }

        .footer {
            background: #0F1C2D;
            color: #B0BEC5;
            padding: 60px 0 30px;
        }

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

        .footer-col h4 {
            font-size: 18px;
            color: #fff;
            margin-bottom: 20px;
        }

        .footer-col p, .footer-col a {
            font-size: 15px;
            line-height: 2.2;
        }

        .footer-bottom {
            text-align: center;
            padding-top: 30px;
            margin-top: 30px;
            border-top: 1px solid #233444;
        }

        @media (max-width:768px) {
            .nav-list

        {
            display: none;
        }

        .page-banner {
            height: 240px;
        }

        .banner-text h1 {
            font-size: 28px;
        }

        }