* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Inter", Arial, sans-serif;
}


body {
    background: #050505;
    color: #fff;
}



.header {
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 8%;
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(0,0,0,.75);
    backdrop-filter: blur(15px);
    z-index: 99;
}



.logo {
    font-size: 28px;
    font-weight: bold;
}

    .logo span {
        color: #00ff88;
    }


nav a {
    color: #ccc;
    text-decoration: none;
    margin: 0 18px;
}


    nav a:hover {
        color: #00ff88;
    }
    nav a.active {
        color: #00ff88;
    }


button, .btn {
    background: #00ff88;
    border: none;
    padding: 14px 30px;
    border-radius: 30px;
    cursor: pointer;
    font-weight: bold;
    text-decoration: none; /* 去掉a标签下划线 */
    display: inline-block; /* 保持按钮效果 */
}



.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 120px 8% 50px;
    background-image: linear-gradient( 90deg, rgba(0,0,0,0.85) 0%, rgba(0,0,0,0.45) 50%, rgba(0,0,0,0.1) 100% ), url("../picture/payment-bg.png");
    background-size: cover;
    background-position: center;
}



.hero-text {
    width: 50%;
}


.tag {
    color: #00ff88;
}


h1 {
    font-size: 70px;
    line-height: 1.1;
    margin: 30px 0;
}



    h1 span {
        color: #00ff88;
    }



.hero-text p {
    color: #aaa;
    font-size: 18px;
    line-height: 1.8;
}



.ghost {
    background: none;
    border: 1px solid #00ff88;
    color: #00ff88;
    margin-left: 20px;
}




.hero-network {
    width: 420px;
    height: 420px;
    position: relative;
}



.circle {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    background: #00ff88;
    color: #000;
    display: flex;
    align-items: center;
    justify-content: center;
    position: absolute;
    top: 130px;
    left: 130px;
    font-weight: bold;
}



.node {
    position: absolute;
    padding: 20px;
    border: 1px solid #00ff88;
    border-radius: 50px;
}



.n1 {
    top: 20px;
    left: 180px
}

.n2 {
    right: 20px;
    top: 180px
}

.n3 {
    bottom: 40px;
    left: 170px
}

.n4 {
    left: 20px;
    top: 180px
}




section {
    padding: 100px 8%;
}



h2 {
    font-size: 42px;
    margin-bottom: 40px;
}




.network-box {
    height: 400px;
    position: relative;
}



.center {
    position: absolute;
    top: 150px;
    left: 45%;
    background: #00ff88;
    color: #000;
    padding: 30px;
    border-radius: 50%;
}



.eco {
    position: absolute;
    border: 1px solid #00ff88;
    padding: 20px;
    border-radius: 20px;
}



.e1 {
    top: 50px;
    left: 45%
}

.e2 {
    right: 20%;
    top: 170px
}

.e3 {
    left: 20%;
    top: 170px
}

.e4 {
    bottom: 40px;
    left: 45%
}





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



    .product-grid div {
        background: #111;
        padding: 35px;
        border-radius: 20px;
        border: 1px solid #222;
    }



    .product-grid h3 {
        color: #00ff88;
        margin-bottom: 20px;
    }





.channel-list,
.industry-grid {
    display: grid;
    grid-template-columns: repeat(6,1fr);
    gap: 20px;
}



    .channel-list div,
    .industry-grid div {
        background: #111;
        padding: 35px;
        text-align: center;
        border-radius: 15px;
    }




.arch {
    display: flex;
    justify-content: center;
    gap: 20px;
}



    .arch div {
        padding: 25px;
        background: #111;
        border: 1px solid #00ff88;
    }



.data {
    display: grid;
    grid-template-columns: repeat(4,1fr);
    background: #0b0b0b;
    text-align: center;
}



    .data strong {
        font-size: 60px;
        color: #00ff88;
    }




.news li {
    margin: 20px;
    color: #aaa;
}



.cta {
    text-align: center;
    background: #00ff88;
    color: #000;
}



    .cta button {
        background: #000;
        color: #fff;
    }



footer {
    padding: 50px;
    text-align: center;
    background: #000;
    color: #777;
}







@media(max-width:900px) {

    .hero {
        flex-direction: column;
    }


    .hero-text {
        width: 100%;
    }


    h1 {
        font-size: 42px;
    }


    .product-grid,
    .channel-list,
    .data {
        grid-template-columns: 1fr;
    }
}

.contact {
    background: #00ff88;
    padding: 70px 20px;
    text-align: center;
    color: #000;
}


    .contact h2 {
        font-size: 36px;
        margin-bottom: 20px;
    }


    .contact p {
        font-size: 18px;
        line-height: 1.8;
        margin-bottom: 35px;
    }



    .contact button {
        background: #000;
        color: #00ff88;
        border: none;
        padding: 15px 35px;
        border-radius: 30px;
        font-weight: bold;
        cursor: pointer;
        transition: .3s;
    }


        .contact button:hover {
            transform: translateY(-3px);
        }






/* 友情链接 */

.friend-links {
    margin-top: 45px;
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}



    .friend-links a {
        min-width: 180px;
        padding: 14px 25px;
        background: rgba(0,0,0,.08);
        border: 1px solid rgba(0,0,0,.2);
        border-radius: 30px;
        color: #000;
        text-decoration: none;
        font-weight: 600;
        transition: .3s;
    }




        .friend-links a:hover {
            background: #000;
            color: #00ff88;
            transform: translateY(-5px);
        }

/* FAQ */

.faq {
    padding: 80px 10%;
    background: #050505;
}


    .faq h2 {
        text-align: center;
        font-size: 36px;
        margin-bottom: 15px;
        color: #ffffff;
    }


.faq-desc {
    text-align: center;
    color: #b5b5b5;
    margin-bottom: 40px;
}



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



.faq-item {
    background: #111111;
    margin-bottom: 15px;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0,0,0,.5);
}



.faq-question {
    width: 100%;
    padding: 22px 25px;
    border: none;
    background: #111111;
    color: #ffffff;
    text-align: left;
    font-size: 18px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}



    .faq-question span {
        font-size: 26px;
        color: #00aaff;
    }



.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: .35s ease;
    background: #111111;
}



    .faq-answer p {
        padding: 0 25px 25px;
        line-height: 1.8;
        color: #cccccc;
    }



.faq-item.active .faq-answer {
    max-height: 300px;
}



.faq-item.active .faq-question span {
    transform: rotate(45deg);
}