/* =========================
   全局基础
========================= */


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


html {
    scroll-behavior: smooth;
}



body {
    font-family: "Microsoft YaHei", Arial, sans-serif;
    background: #020817;
    color: #fff;
    overflow-x: hidden;
}



a {
    text-decoration: none;
    color: #fff;
}



p {
    line-height: 1.8;
    color: #cbd5e1;
}



.bg-animation {
    position: fixed;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    z-index: -2;
    background: radial-gradient( circle at top, #123b70, #020817 60% );
}




/* =========================
 HEADER
========================= */


.header {
    height: 80px;
    padding: 0 8%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: absolute;
    top: 0;
    width: 100%;
    z-index: 20;
}



.logo {
    font-size: 32px;
    font-weight: 900;
    letter-spacing: 2px;
    color: #00eaff;
}



    .logo span {
        color: #fff;
    }



.nav {
    display: flex;
    gap: 35px;
}



    .nav a {
        font-size: 16px;
        transition: .3s;
    }



        .nav a:hover {
            color: #00eaff;
        }


    /* ==========================
 当前导航选中状态
========================== */


    .nav a {
        position: relative;
        padding: 10px 18px;
        border-radius: 25px;
        transition: .35s;
    }



        /* 鼠标经过 */

        .nav a:hover {
            color: #00eaff;
            background: rgba(0,234,255,.08);
        }



        /* 当前页面 */

        .nav a.active {
            color: #00eaff;
            background: linear-gradient( 90deg, rgba(0,234,255,.18), rgba(37,99,235,.25) );
            border: 1px solid rgba(0,234,255,.45);
            box-shadow: 0 0 15px rgba(0,234,255,.35), inset 0 0 15px rgba(0,234,255,.15);
        }



            /* 底部发光线 */

            .nav a.active::after {
                content: "";
                position: absolute;
                left: 50%;
                bottom: 3px;
                width: 35px;
                height: 2px;
                transform: translateX(-50%);
                background: #00eaff;
                box-shadow: 0 0 10px #00eaff;
                border-radius: 10px;
            }


.menu-btn {
    display: none;
    font-size: 30px;
    cursor: pointer;
    color: #00eaff;
}







/* =========================
 Banner
========================= */


.banner {
    height: 850px;
    position: relative;
    overflow: hidden;
    background: linear-gradient( 120deg, rgba(0,234,255,.08), transparent );
}



.banner-slider {
    height: 100%;
}


/* =========================
 Banner基础
========================= */

.banner-item {
    width: 100%;
    min-height: 700px;
    display: flex;
    align-items: center;
    position: relative;
    background-size: cover;
    background-position: center;
    overflow: hidden;
}



/* 第一张背景 */

.banner-one {
    background-image: linear-gradient( 90deg, rgba(2,15,35,.85), rgba(2,15,35,.35) ), url("../picture/banner1.png");
}





/* 第二张背景 */

.banner-two {
    background-image: linear-gradient( 90deg, rgba(2,15,35,.85), rgba(2,15,35,.35) ), url("../picture/banner2.png");
}





/* 第三张背景 */

.banner-three {
    background-image: linear-gradient( 90deg, rgba(2,15,35,.85), rgba(2,15,35,.35) ), url("../picture/banner3.png");
}

.banner-item {
    height: 100%;
    padding: 180px 8%;
    display: none;
    align-items: center;
    justify-content: space-between;
}



    .banner-item.active {
        display: flex;
        animation: fade .8s;
    }



@keyframes fade {

    from {
        opacity: 0;
        transform: translateX(30px);
    }

    to {
        opacity: 1;
        transform: translateX(0);
    }
}





.banner-content {
    max-width: 700px;
}



    .banner-content h1 {
        font-size: 58px;
        line-height: 1.2;
        margin-bottom: 25px;
        background: linear-gradient( 90deg, #00eaff, #8b5cf6 );
        -webkit-background-clip: text;
        color: transparent;
    }



    .banner-content h2 {
        font-size: 30px;
        margin-bottom: 20px;
    }



    .banner-content p {
        font-size: 18px;
        max-width: 600px;
    }





.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-top: 35px;
    padding: 15px 45px;
    background: linear-gradient( 90deg, #00eaff, #2563eb );
    border-radius: 40px;
    font-size: 16px;
    cursor: pointer;
    box-shadow: 0 0 30px rgba(0,234,255,.5);
}



.banner-tech {
    position: relative;
    width: 380px;
    height: 380px;
}



.circle {
    width: 300px;
    height: 300px;
    border-radius: 50%;
    border: 2px solid #00eaff;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 30px;
    box-shadow: 0 0 80px rgba(0,234,255,.8);
    animation: rotate 8s linear infinite;
}




@keyframes rotate {

    100% {
        transform: rotate(360deg);
    }
}





.data-box {
    position: absolute;
    right: 0;
    bottom: 40px;
    padding: 20px;
    background: rgba(255,255,255,.12);
    border: 1px solid rgba(255,255,255,.2);
    border-radius: 15px;
    backdrop-filter: blur(10px);
}




.banner-dots {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
}



.dot {
    display: inline-block;
    width: 12px;
    height: 12px;
    background: #64748b;
    border-radius: 50%;
    margin: 8px;
    cursor: pointer;
}



    .dot.active {
        background: #00eaff;
    }





/* =========================
 公共区域
========================= */


.section {
    padding: 90px 8%;
}



.dark-section {
    background: linear-gradient( 180deg, #020817, #071b38 );
}





.section-title {
    text-align: center;
    font-size: 40px;
    margin-bottom: 35px;
    background: linear-gradient( 90deg, #fff, #00eaff );
    -webkit-background-clip: text;
    color: transparent;
}



.section-desc {
    max-width: 900px;
    margin: auto;
    text-align: center;
    font-size: 18px;
}





/* =========================
 卡片
========================= */


.card-grid {
    display: grid;
    grid-template-columns: repeat(4,1fr);
    gap: 25px;
}



    .card-grid.three {
        grid-template-columns: repeat(3,1fr);
    }



.info-card,
.service-card,
.feature-item,
.channel-box div,
.industry-grid div {
    padding: 35px;
    border-radius: 20px;
    background: rgba(255,255,255,.08);
    border: 1px solid rgba(255,255,255,.15);
    backdrop-filter: blur(12px);
    transition: .4s;
}



    .info-card:hover,
    .service-card:hover,
    .feature-item:hover,
    .channel-box div:hover {
        transform: translateY(-10px);
        border-color: #00eaff;
    }





.icon {
    font-size: 28px;
    color: #00eaff;
    margin-bottom: 20px;
}







/* =========================
 功能
========================= */


.feature-grid {
    display: grid;
    grid-template-columns: repeat(3,1fr);
    gap: 25px;
}



.feature-item {
    font-size: 25px;
}



    .feature-item h3 {
        font-size: 20px;
        margin: 15px 0;
    }







/* =========================
 渠道
========================= */


.channel-box {
    display: grid;
    grid-template-columns: repeat(4,1fr);
    gap: 25px;
    text-align: center;
    font-size: 25px;
}







/* =========================
 架构
========================= */


.architecture {
    max-width: 500px;
    margin: auto;
    text-align: center;
    font-size: 24px;
    line-height: 2;
    padding: 40px;
    background: rgba(255,255,255,.08);
    border-radius: 25px;
    border: 1px solid #00eaff;
}






/* =========================
 行业
========================= */


.industry-grid {
    display: grid;
    grid-template-columns: repeat(4,1fr);
    gap: 25px;
}



    .industry-grid div {
        text-align: center;
        font-size: 22px;
    }





/* =========================
 流程
========================= */


.process {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
    font-size: 22px;
}




    .process span {
        padding: 20px 30px;
        background: rgba(255,255,255,.1);
        border-radius: 15px;
    }





/* =========================
 SEO文章
========================= */


.seo-section article {
    max-width: 900px;
    margin: auto;
    font-size: 18px;
}





/* =========================
 Footer
========================= */


.footer {
    padding: 100px 20px;
    text-align: center;
    background: linear-gradient( 120deg, #071b38, #020817 );
}


    .footer h2 {
        font-size: 40px;
        margin-bottom: 20px;
    }









/* =================================================
   手机响应式
================================================= */


@media(max-width:900px) {



    .header {
        height: 70px;
        padding: 0 20px;
    }





    .menu-btn {
        display: block;
    }





    .nav {
        position: absolute;
        top: 70px;
        left: 0;
        width: 100%;
        background: #06152d;
        display: none;
        flex-direction: column;
        padding: 25px;
        gap: 20px;
    }



        .nav.show {
            display: flex;
        }




    .banner {
        height: auto;
        min-height: 720px;
    }



    .banner-item {
        padding: 120px 25px 60px;
        flex-direction: column;
        text-align: center;
    }




    .banner-content h1 {
        font-size: 36px;
    }



    .banner-content h2 {
        font-size: 22px;
    }



    .banner-content p {
        font-size: 15px;
    }





    .banner-tech {
        margin-top: 50px;
        width: 220px;
        height: 220px;
    }



    .circle {
        width: 180px;
        height: 180px;
        font-size: 18px;
    }



    .data-box {
        font-size: 12px;
        padding: 12px;
    }





    .section {
        padding: 60px 20px;
    }



    .section-title {
        font-size: 30px;
    }



    .card-grid,
    .card-grid.three,
    .feature-grid,
    .channel-box,
    .industry-grid {
        grid-template-columns: 1fr;
    }



        .info-card,
        .service-card,
        .feature-item,
        .channel-box div,
        .industry-grid div {
            padding: 25px;
        }




    .architecture {
        font-size: 18px;
        padding: 25px;
    }




    .process {
        font-size: 16px;
        flex-direction: column;
    }



        .process span {
            width: 100%;
            text-align: center;
        }



    .footer h2 {
        font-size: 28px;
    }



    .btn {
        width: 100%;
    }
}







/* 超小屏幕 */

@media(max-width:375px) {


    .banner-content h1 {
        font-size: 30px;
    }


    .section-title {
        font-size: 26px;
    }
}

/* ==============================
友情链接
============================== */


.friend-links {
    margin: 40px auto;
    max-width: 900px;
}



    .friend-links h3 {
        font-size: 18px;
        margin-bottom: 20px;
        color: #00eaff;
    }



.links {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 15px;
}



    .links a {
        padding: 10px 22px;
        border: 1px solid rgba(0,220,255,.3);
        border-radius: 30px;
        color: #fff;
        text-decoration: none;
        background: rgba(0,200,255,.08);
        transition: .3s;
    }



        .links a:hover {
            background: #00d9ff;
            color: #001018;
            transform: translateY(-3px);
        }

/* =================================
 老挝支付系统 SEO 页面增强
 Laos Payment System UI Upgrade
================================= */


/* 页面平滑出现 */

body {
    animation: pageShow .8s ease;
}


@keyframes pageShow {

    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}



/* ===============================
 标题增强
=============================== */


.section-title {
    position: relative;
    letter-spacing: 1px;
}


    .section-title::after {
        content: "";
        display: block;
        width: 80px;
        height: 3px;
        margin: 20px auto 0;
        background: linear-gradient( 90deg, #00eaff, #8b5cf6 );
        border-radius: 10px;
    }






/* ===============================
 服务卡片增强
=============================== */


.service-card h3,
.info-card h3,
.feature-item h3 {
    color: #fff;
    margin-bottom: 15px;
}


.service-card p,
.info-card p,
.feature-item p {
    font-size: 16px;
}




.service-card:hover,
.info-card:hover,
.feature-item:hover {
    box-shadow: 0 0 30px rgba(0,234,255,.25);
}





/* ===============================
 FAQ模块
=============================== */


.faq {
    max-width: 900px;
    margin: auto;
}


    .faq h3 {
        margin-top: 25px;
        padding: 20px;
        background: rgba(255,255,255,.08);
        border-radius: 15px;
        border-left: 3px solid #00eaff;
        font-size: 20px;
    }


    .faq p {
        padding: 20px 25px;
        background: rgba(255,255,255,.04);
        border-radius: 0 0 15px 15px;
    }







/* ===============================
 SEO文章优化
=============================== */


.seo-section article {
    background: rgba(255,255,255,.05);
    padding: 45px;
    border-radius: 25px;
    border: 1px solid rgba(255,255,255,.12);
}



    .seo-section article p {
        margin-bottom: 25px;
        font-size: 17px;
        text-indent: 2em;
    }







/* ===============================
 支付渠道增强
=============================== */


.channel-box div {
    position: relative;
    overflow: hidden;
}


    .channel-box div::before {
        content: "";
        position: absolute;
        width: 120px;
        height: 120px;
        background: rgba(0,234,255,.15);
        border-radius: 50%;
        top: -50px;
        right: -40px;
    }







/* ===============================
 架构流程增强
=============================== */


.architecture div {
    margin: 15px 0;
    padding: 18px;
    background: rgba(0,234,255,.08);
    border-radius: 15px;
    border: 1px solid rgba(0,234,255,.3);
}





    .architecture div:hover {
        transform: scale(1.05);
        transition: .3s;
    }







/* ===============================
 行业应用增强
=============================== */


.industry-grid div {
    min-height: 120px;
    display: flex;
    align-items: center;
    justify-content: center;
}





    .industry-grid div:hover {
        background: linear-gradient( 135deg, rgba(0,234,255,.2), rgba(139,92,246,.2) );
    }







/* ===============================
 开发流程增强
=============================== */


.process span {
    border: 1px solid rgba(0,234,255,.3);
}



    .process span:hover {
        background: #00eaff;
        color: #001018;
    }







/* ===============================
 CTA按钮增强
=============================== */


.btn:hover {
    transform: translateY(-5px);
    box-shadow: 0 0 50px rgba(0,234,255,.8);
    transition: .3s;
}







/* ===============================
 Banner金融科技装饰
=============================== */


.banner-content {
    position: relative;
    z-index: 5;
}



    .banner-content::after {
        content: "Laos Payment Gateway";
        position: absolute;
        top: -80px;
        left: 0;
        font-size: 60px;
        font-weight: 900;
        color: rgba(255,255,255,.03);
    }








/* ===============================
 图片SEO模块
=============================== */


img {
    max-width: 100%;
    height: auto;
}



.seo-image {
    border-radius: 20px;
    overflow: hidden;
    margin: 30px auto;
}


    .seo-image img {
        transition: .5s;
    }



        .seo-image img:hover {
            transform: scale(1.05);
        }







/* ===============================
 移动端SEO优化
=============================== */


@media(max-width:900px) {


    .seo-section article {
        padding: 25px;
    }


    .faq h3 {
        font-size: 17px;
    }


    .faq p {
        font-size: 15px;
    }


    .banner-content::after {
        font-size: 35px;
    }
}