/* =================================================
 ABOUT PAGE
 Payment Technology Company Style
 SEO Enterprise Website
================================================= */


/* ===============================
 Reset
================================ */


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



html {
    scroll-behavior: smooth;
}



body {
    font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
    background: #f5f9ff;
    color: #17243b;
    line-height: 1.8;
}



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



img {
    max-width: 100%;
    display: block;
}



h1, h2, h3 {
    font-weight: 700;
}



h2 {
    text-align: center;
    font-size: 38px;
    margin-bottom: 30px;
    color: #061a3a;
}



h3 {
    font-size: 22px;
}






/* ===============================
 Header
================================ */


.header {
    height: 80px;
    width: 100%;
    position: fixed;
    top: 0;
    left: 0;
    z-index: 999;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 8%;
    background: rgba(5,20,50,.82);
    backdrop-filter: blur(15px);
    border-bottom: 1px solid rgba(255,255,255,.15);
}



.logo {
    font-size: 28px;
    font-weight: bold;
    color: #00d9ff;
}



.header nav {
    display: flex;
    gap: 32px;
}



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



        .header nav a:hover,
        .header nav .active {
            color: #00d9ff;
        }




.nav-btn {
    display: inline-block;
    padding: 10px 28px;
    border-radius: 40px;
    background: linear-gradient( 90deg, #006eff, #00d9ff );
    color: white !important;
    box-shadow: 0 0 25px rgba(0,180,255,.45);
}






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


.banner {
    height: 720px;
}



.banner-bg {
    height: 100%;
    display: flex;
    align-items: center;
    background: linear-gradient( 90deg, rgba(0,18,55,.9), rgba(0,120,255,.35) ), url("../images/about-banner.jpg");
    background-size: cover;
    background-position: center;
}



.banner-content {
    margin-left: 10%;
    max-width: 720px;
    color: white;
}



    .banner-content h1 {
        font-size: 58px;
        line-height: 1.3;
        margin-bottom: 25px;
    }



    .banner-content p {
        font-size: 22px;
        margin-bottom: 40px;
    }



    .banner-content a {
        display: inline-block;
        padding: 15px 42px;
        border-radius: 40px;
        background: linear-gradient( 90deg, #00c6ff, #006cff );
        color: white;
    }







/* ===============================
 Section
================================ */


.section {
    padding: 90px 8%;
}



.intro {
    max-width: 900px;
    margin: 0 auto 50px;
    text-align: center;
    font-size: 18px;
    color: #667;
}







/* ===============================
 Dark Section
================================ */


.dark {
    padding: 90px 8%;
    background: linear-gradient( 135deg, #061633, #073b80 );
    color: white;
}



    .dark h2 {
        color: white;
    }



    .dark p {
        color: rgba(255,255,255,.85);
    }







/* ===============================
 Grid
================================ */


.grid3 {
    display: grid;
    grid-template-columns: repeat(3,1fr);
    gap: 30px;
}



.grid4 {
    display: grid;
    grid-template-columns: repeat(4,1fr);
    gap: 25px;
}







/* ===============================
 Box
================================ */


.box {
    padding: 35px;
    background: white;
    border-radius: 20px;
    box-shadow: 0 15px 40px rgba(0,80,180,.12);
    transition: .35s;
}



    .box:hover {
        transform: translateY(-10px);
        box-shadow: 0 20px 45px rgba(0,150,255,.3);
    }



    .box i {
        font-size: 42px;
        color: #008cff;
        margin-bottom: 20px;
    }



    .box h3 {
        color: #006cff;
        margin-bottom: 15px;
    }





/* ===============================
 Grid4 dark card
================================ */


.grid4 div {
    padding: 35px;
    border-radius: 20px;
    background: rgba(255,255,255,.1);
    border: 1px solid rgba(255,255,255,.2);
}



.grid4 h3 {
    color: #00d9ff;
    margin-bottom: 15px;
}








/* ===============================
 Research
================================ */


.research {
    display: grid;
    grid-template-columns: repeat(3,1fr);
    gap: 30px;
}



    .research div {
        background: white;
        padding: 35px;
        border-radius: 20px;
        box-shadow: 0 10px 35px rgba(0,80,160,.1);
    }



    .research i {
        font-size: 38px;
        color: #006cff;
        margin-bottom: 20px;
    }



    .research h3 {
        color: #006cff;
    }








/* ===============================
 Architecture
================================ */


.architecture-box {
    display: grid;
    grid-template-columns: repeat(4,1fr);
    gap: 25px;
    margin-top: 40px;
}



    .architecture-box div {
        padding: 30px;
        background: rgba(255,255,255,.1);
        border-radius: 20px;
        border: 1px solid rgba(255,255,255,.2);
    }



    .architecture-box h3 {
        color: #00d9ff;
    }







/* ===============================
 Numbers
================================ */


.numbers {
    display: grid;
    grid-template-columns: repeat(4,1fr);
    gap: 30px;
}



    .numbers div {
        padding: 35px;
        text-align: center;
        background: rgba(255,255,255,.1);
        border-radius: 20px;
    }



    .numbers strong {
        display: block;
        font-size: 48px;
        color: #00d9ff;
    }







/* ===============================
 Steps
================================ */


.steps {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
    color: #006cff;
    font-size: 20px;
}



    .steps span {
        padding: 18px 35px;
        background: white;
        border-radius: 40px;
        box-shadow: 0 10px 25px rgba(0,0,0,.1);
    }








/* ===============================
 Service
================================ */


.service {
    padding: 90px 8%;
    background: linear-gradient( 120deg, #eef8ff, #fff );
}



    .service .grid3 div {
        padding: 35px;
        background: white;
        border-radius: 20px;
        box-shadow: 0 10px 30px rgba(0,100,255,.12);
    }



    .service h3 {
        color: #006cff;
    }







/* ===============================
 Support
================================ */


.support-section {
    padding: 90px 8%;
    text-align: center;
    background: white;
}



.support {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 25px;
}



    .support span {
        padding: 18px 40px;
        background: white;
        border-radius: 40px;
        color: #006cff;
        box-shadow: 0 10px 25px rgba(0,0,0,.1);
    }








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


.faq {
    background: #fff;
}



    .faq h3 {
        margin-top: 35px;
        color: #006cff;
        font-size: 22px;
    }



    .faq p {
        color: #555;
        font-size: 16px;
    }








/* ===============================
 CTA
================================ */


.cta {
    padding: 100px 20px;
    text-align: center;
    color: white;
    background: linear-gradient( 120deg, #006cff, #00d9ff );
}



    .cta h2 {
        color: white;
        font-size: 42px;
    }



    .cta p {
        font-size: 20px;
        margin: 25px;
    }








/* ===============================
 Friend Link
================================ */


.friend-links {
    margin-top: 30px;
    display: flex;
    justify-content: center;
    gap: 25px;
    flex-wrap: wrap;
}



    .friend-links a {
        color: white;
        font-size: 14px;
        opacity: .9;
    }




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


footer {
    padding: 30px;
    text-align: center;
    background: #04122d;
    color: white;
}








/* ===============================
 Mobile
================================ */


@media(max-width:900px) {



    .header {
        padding: 0 20px;
    }



        .header nav {
            display: none;
        }



    .banner {
        height: 600px;
    }



    .banner-content {
        margin-left: 25px;
        margin-right: 25px;
    }



        .banner-content h1 {
            font-size: 38px;
        }



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



    .grid3,
    .grid4,
    .research,
    .numbers,
    .architecture-box {
        grid-template-columns: 1fr;
    }



    h2 {
        font-size: 30px;
    }



    .steps {
        flex-direction: column;
    }



        .steps span {
            width: 90%;
            text-align: center;
        }



    .numbers strong {
        font-size: 40px;
    }
}