* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: Arial, sans-serif;
    background: #ffffff;
    color: #111111;
}

nav {
    height: 60px;
    padding: 0 7%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

nav h2 {
    font-size: 22px;
    margin: 0;
}

nav a {
    color: #555555;
    text-decoration: none;
    margin-left: 25px;
    font-size: 14px;
}

nav a:hover {
    color: #111111;
}

.hero {
    min-height: 100vh;
    text-align: center;
    padding: 100px 20px 60px;
}

.label {
    font-size: 12px;
    letter-spacing: 2px;
    color: #777777;
    font-weight: bold;
}

h1 {
    font-size: 80px;
    line-height: 0.95;
    margin: 25px 0;
    letter-spacing: -4px;
}

.subtitle {
    max-width: 500px;
    margin: 0 auto;
    color: #666666;
    font-size: 19px;
    line-height: 1.5;
}

.button {
    display: inline-block;
    margin-top: 25px;
    padding: 13px 24px;
    background: #111111;
    color: white;
    text-decoration: none;
    border-radius: 25px;
    font-size: 14px;
}

.button:hover {
    background: #444444;
}

.product {
    width: 650px;
    height: 300px;
    margin: 80px auto 0;
    background: #eeeeee;
    border-radius: 35px;
    position: relative;
    overflow: hidden;
}

.product-shape {
    position: absolute;
    width: 230px;
    height: 180px;
    background: #222222;
    border-radius: 30px;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%) rotate(-8deg);
}

.glow {
    position: absolute;
    width: 350px;
    height: 350px;
    border-radius: 50%;
    background: #dddddd;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
}

.features {
    min-height: 100vh;
    background: #111111;
    color: white;
    padding: 120px 8%;
    text-align: center;
}

.features .label {
    color: #999999;
}

.features h2 {
    font-size: 70px;
    line-height: 1;
    letter-spacing: -3px;
    margin: 25px 0 70px;
}

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

.card {
    background: #1d1d1d;
    border-radius: 20px;
    padding: 35px;
    text-align: left;
    max-width: 300px;
}

.card h3 {
    font-size: 22px;
    margin-top: 0;
}

.card p {
    color: #aaaaaa;
    line-height: 1.5;
}

@media (max-width: 700px) {

    nav {
        padding: 0 5%;
    }

    nav a {
        margin-left: 10px;
    }

    h1 {
        font-size: 55px;
    }

    .subtitle {
        font-size: 17px;
    }

    .product {
        width: 90%;
        height: 230px;
        margin-top: 60px;
    }

    .features h2 {
        font-size: 50px;
    }

    .cards {
        flex-direction: column;
        align-items: center;
    }

    .card {
        width: 100%;
        max-width: 400px;
    }
}