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

body {
    font-family: Arial, sans-serif;
    background: #050505;
    color: white;
    line-height: 1.6;
}

nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 25px 7%;
    border-bottom: 1px solid #222;
}

.logo {
    font-size: 22px;
    font-weight: bold;
}

.logo span {
    color: #50c878;
}

.nav-links {
    display: flex;
    gap: 30px;
}

.nav-links a {
    color: #ccc;
    text-decoration: none;
}

.connect-btn,
.primary-btn {
    background: #50c878;
    color: #000;
    border: none;
    padding: 13px 24px;
    border-radius: 30px;
    font-weight: bold;
    cursor: pointer;
}

.hero {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 50px;
    padding: 100px 7%;
    min-height: 600px;
}

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

.tagline {
    color: #50c878;
    font-size: 13px;
    letter-spacing: 3px;
    margin-bottom: 20px;
}

h1 {
    font-size: clamp(42px, 6vw, 78px);
    line-height: 1.1;
    margin-bottom: 25px;
}

h1 span {
    color: #50c878;
}

.description {
    color: #aaa;
    font-size: 18px;
    max-width: 450px;
    margin-bottom: 30px;
}

.hero-buttons {
    display: flex;
    gap: 15px;
    align-items: center;
    flex-wrap: wrap;
}

.secondary-btn {
    color: white;
    text-decoration: none;
    border: 1px solid #555;
    padding: 12px 24px;
    border-radius: 30px;
}

.card-preview {
    perspective: 1000px;
}

.bank-card {
    width: 380px;
    height: 240px;
    padding: 28px;
    border-radius: 20px;
    background: linear-gradient(135deg, #183c2b, #50c878);
    color: #fff;
    box-shadow: 0 25px 70px rgba(80, 200, 120, 0.2);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transform: rotate(5deg);
}

.card-top,
.card-bottom {
    display: flex;
    justify-content: space-between;
    font-weight: bold;
}

.chip {
    width: 48px;
    height: 35px;
    background: #d8d8a0;
    border-radius: 6px;
}

.card-number {
    font-size: 21px;
    letter-spacing: 3px;
}

.features {
    padding: 70px 7%;
    background: #0c0c0c;
}

h2 {
    font-size: 36px;
    margin-bottom: 35px;
}

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

.feature-box {
    border: 1px solid #292929;
    padding: 30px;
    border-radius: 15px;
}

.feature-box h3 {
    color: #50c878;
    margin-bottom: 12px;
}

.feature-box p,
.about p {
    color: #aaa;
}

.about {
    padding: 80px 7%;
    text-align: center;
}

footer {
    padding: 30px 7%;
    border-top: 1px solid #222;
    text-align: center;
    color: #777;
}

@media (max-width: 800px) {
    .nav-links {
        display: none;
    }

    .hero {
        flex-direction: column;
        text-align: center;
        padding: 60px 5%;
    }

    .hero-buttons {
        justify-content: center;
    }

    .card-preview {
        margin-top: 30px;
    }

    .bank-card {
        width: min(380px, 90vw);
        height: 230px;
    }

    .feature-grid {
        grid-template-columns: 1fr;
    }
}